CN1703751A - Disc cartridge - Google Patents
Disc cartridge Download PDFInfo
- Publication number
- CN1703751A CN1703751A CN 200380101246 CN200380101246A CN1703751A CN 1703751 A CN1703751 A CN 1703751A CN 200380101246 CN200380101246 CN 200380101246 CN 200380101246 A CN200380101246 A CN 200380101246A CN 1703751 A CN1703751 A CN 1703751A
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- CN
- China
- Prior art keywords
- disk
- cartridge
- shutters
- shutter
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Images
Landscapes
- Moving Of Heads (AREA)
- Packaging For Recording Disks (AREA)
Abstract
A disc cartridge comprises a rotary member (25) that is held on first and second shutters in a disc storage unit in which a disc is stored with a first surface externally exposed from a disc opening and that is engaged with the first and second shutters so that the first and second shutters are opened and closed as the disc rotates within the disk storage unit, wherein the rotary member has a disc receiving portion comprising a contact area (25n) that comes into contact with the periphery of a second surface of the disc and receives the disc when the first and second shutters are closed state and a groove (25p) provided outside the contact area.
Description
Technical Field
The present invention relates to a disc cartridge that houses a disc-shaped signal recording medium such as an optical disc or a magnetic disc in a rotatable state.
Background
Conventionally, a disc cartridge for holding a disc-shaped signal recording medium has been proposed.
For example, japanese patent laying-open No. 9-153264 discloses a disk cartridge in which a disk-shaped recording medium (hereinafter referred to as a disk) having a signal recording surface on one side or both sides thereof is housed in a completely covered manner in a disk housing portion provided inside a disk cartridge main body composed of an upper half portion and a lower half portion. The cartridge body is formed with a chucking opening for chucking the magnetic disk by a turntable (rotatable table) and a clamper (clamper) of a spindle motor (spindle motor), and a head opening for reproducing and recording signals from and to the magnetic disk by a head. The chucking opening and the magnetic head opening are connected, so that dust is likely to enter from these openings when the transport case is carried, or fingerprints are likely to adhere to the disk. Therefore, a shutter (shutter) covering these opening portions is formed in the disk cartridge.
However, in order to insert the disk cartridge into the disk device to perform recording and reproduction of the disk in the case of the disk cartridge of such a structure, it is necessary to secure a space for accommodating surface wobbling when the disk is rotated, bending of the disk, and positioning error of the disk device with respect to the disk cartridge in a space for accommodating the disk formed between the upper half portion and the lower half portion. Therefore, there is a problem that the thickness of the cartridge main body becomes large.
Further, since the opening for the turntable of the spindle motor and the head opening are provided in the lower half and the opening for the clamper is provided in the upper half, the shutter for simultaneously closing these openings needs to have コ -shaped configuration which is continuous from the upper half to the lower half. However, since the shutter having such a shape is expensive, the manufacturing cost of the disk cartridge is increased as a result.
In the case of a disk with a metal hub (hub), the disk can be attracted by magnetic force so as not to be shaken, but in the case of an optical disk without a hub such as a CD or a DVD, the disk is usually in an unfixed, free state in the case. Therefore, there is also a problem that dust entering the case through the opening portion is attached to the disk by opening the shutter in the disk device. Further, there is a problem that the signal recording surface of the disk is scratched by the wobbling of the disk, or dust is generated by the collision between the disk and the inner wall of the case, and the dust adheres to the disk.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to reduce the cost of a disk cartridge that stores a disk having a recording surface on one side, in particular, by reducing the thickness and simplifying the configuration of a shutter. Further, it is an object of the present invention to provide a disk cartridge which holds a disk in the disk cartridge, does not shake, reduces adhesion of dust to the disk, and has an excellent design by utilizing an exposed disk label surface.
In the disk cartridge of the present invention,
comprising:
a cartridge body comprising: a disk storage section having a disk opening and a bottom, and storing a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening; a chucking opening portion provided at a bottom of the disk storage portion to chuck the disk from outside; and a head opening portion provided at a bottom portion of the disk storage portion for allowing a head for recording and/or reproducing signals to access a 2 nd surface of the disk,
1 st and 2 nd shutters provided on a bottom of the disk storage portion for opening or closing the head opening portion to the outside, and
A rotation member which is held by the 1 st and 2 nd shutters in the disk storage portion and is engaged with the 1 st and 2 nd shutters so that the 1 st and 2 nd shutters can be opened and closed by rotating in the disk storage portion,
wherein,
the rotating member includes a disk receiving portion having: a contact area which is in contact with an outer peripheral edge of a 2 nd surface of the disk and receives the disk when the 1 st and 2 nd shutters are in a closed state; a groove disposed outside the contact region.
In a preferred embodiment of the present invention,
the rotating member has a notch provided in the disk receiving portion so as to be positioned in the head opening portion in a state where the 1 st and 2 nd shutters are opened,
the disk receiving portion having a side wall provided along an outer periphery of the bottom portion,
the 1 st and 2 nd shutters each have a disk holding portion, and the disk holding portion holds the center of the disk by shifting the center of the disk with respect to the center of the disk holding portion so that the outer side surface of the disk comes into contact with the side wall of the disk housing portion in a region where the notch of the rotary member is located when the 1 st and 2 nd shutters are in the closed state.
In another preferred embodiment, the groove of the disk receiving portion is exposed to the disk receiving portion in a state where the 1 st and 2 nd shutters are closed.
In another preferred embodiment, the rotating member has a plurality of embedded portions provided to fill a part of the groove.
In another preferred embodiment, the length of the insertion portion in the circumferential direction is 1mm or more.
In another preferred embodiment, the insertion portion has an upper surface inclined toward a center of the disk opening.
In addition, the disk cartridge of the present invention,
further comprising:
1 st and 2 nd disk holding portions which are provided in a part of the 1 st and 2 nd shutters, respectively, and which fix the disk to the 1 st and 2 nd shutters or the cartridge main body when the 1 st and 2 nd shutters close the chucking opening portion and the head opening portion in association with opening and closing operations of the shutters; and
a drop prevention member protruding inside the disk opening,
wherein,
when the 1 st and 2 nd shutters are closed, the 1 st disk holding portion contacts the disk in the vicinity of the drop preventing member before the 2 nd disk holding portion contacts the disk.
In another preferred embodiment, at least a part of the 1 st disk holding portion is positioned below the drop preventing member and contacts the drop preventing member when the 1 st and 2 nd shutters are closed.
In another preferred embodiment, the 1 st and 2 nd disk holding portions each include an inclined surface having a reverse tapered shape, and the disk is held and fixed by abutting the inclined surface against a ridge on the outer periphery of the disk, and the disk is pressed and held toward the bottom of the disk storage portion.
In another preferred embodiment, the 1 st disc holding portion includes: and a structure for changing the inclination and position of the disk in the disk storage portion so that the 2 nd disk holding portion is brought into contact with and held by the disk after the vicinity of the drop preventing member comes into contact with the disk.
In another preferred embodiment, the configuration for changing the inclination and position of the 1 st disc holding portion includes: a 1 st regulating surface which is configured in a mode of being not parallel to the moving direction of the 1 st disk holding part and forming a reverse taper shape when the 1 st and the 2 nd shutters are closed; and a 2 nd restriction surface disposed in parallel with the 1 st or 2 nd shutter.
In addition, the disk cartridge of the present invention,
comprising:
a cartridge body comprising: a disk storage section having a disk opening and a bottom, and storing a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening; a chucking opening portion provided at a bottom of the disk storage portion to chuck the disk from outside; and a head opening portion provided at a bottom portion of the disk storage portion for allowing a head for recording and/or reproducing signals to access a 2 nd surface of the disk,
1 st and 2 nd shutters provided on a bottom of the disk storage portion for opening or closing the head opening portion to the outside, and
a rotation member which is held by the 1 st and 2 nd shutters in the disk storage portion and is engaged with the 1 st and 2 nd shutters so that the 1 st and 2 nd shutters can be opened and closed by rotating in the disk storage portion,
wherein,
the rotating member includes a disk receiving portion having: a contact area which is in contact with an outer peripheral edge of a 2 nd surface of the disk and receives the disk when the 1 st and 2 nd shutters are in a closed state; a groove provided outside the contact region,
The cartridge main body has: and a rotating member receiving portion which is in contact with a part of the bottom of the rotating member when the 1 st and 2 nd shutters are in the release state, and holds the rotating member.
In another preferred embodiment, the rotating member receiving portion has a slope provided in the vicinity of the head opening portion and facing the disk opening portion, so that a part of an outer periphery of a bottom portion of the rotating member comes into contact with the slope when the 1 st and 2 nd shutters are in the released state.
In another preferred embodiment, the rotary member has 1 st and 2 nd protrusions protruding toward the bottom of the disk storage portion, the 1 st and 2 nd shutters have 1 st and 2 nd guide grooves into which the 1 st and 2 nd protrusions of the rotary member are fitted, respectively, and at least one of the 1 st and 2 nd protrusions has a claw portion provided at a tip thereof to prevent the claw portion from coming off from the corresponding guide groove.
In a further preferred embodiment of the process according to the invention,
the 1 st and 2 nd shutters have:
notches respectively provided so as to form holes at positions overlapping with the center hole of the disk when the 1 st and 2 nd shutters are in a closed state;
1 st and 2 nd convex parts provided on the periphery of the notch; and
and 1 st, 2 nd and 3 rd protrusions formed on the 1 st and 2 nd convex parts and protruding toward the central hole of the disk when the 1 st and 2 nd shutters are in a closed state.
In another preferred embodiment, the rotating member has a disk receiving portion provided to receive an outer peripheral edge portion of the 2 nd surface of the disk, and a notch provided in the disk receiving portion, and the notch is positioned in the head opening portion when the 1 st and 2 nd shutters are in the open state,
the cartridge body has a recess provided in a region described below, wherein the region is: and a region of the bottom of the disk receiving portion, through which the notch of the rotating member passes when the 1 st and 2 nd shutters are opened, and in which the disk receiving portion overlaps the 1 st and 2 nd shutters.
In a further preferred embodiment of the process according to the invention,
the cartridge main body has 1 st and 2 nd convex portions provided in the vicinity of the head opening portion,
one of the 1 st and 2 nd shutters and the rotating member have 1 st and 2 nd protrusions that respectively abut against the 1 st and 2 nd protrusions of the cartridge body when the 1 st and 2 nd shutters are in a closed state.
In addition, the disk cartridge of the present invention,
comprising:
a cartridge body comprising: a disk storage section having a disk opening and a bottom, and storing a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening; a chucking opening portion provided at a bottom of the disk storage portion to chuck the disk from outside; and a head opening portion provided at a bottom of the disk storage portion, for allowing a head that performs recording and/or reproducing of a signal to access a 2 nd surface of the disk, and a shutter provided at the bottom of the disk storage portion for opening or closing the head opening portion to the outside;
and a drop preventing member fixed to an upper surface of the cartridge main body so as to partially protrude from the cartridge opening,
the anti-falling part is provided with at least one positioning pin and at least one matching pin provided with a 1 st matching part,
the cartridge main body has: at least one positioning hole extending in a 1 st direction from the cartridge upper body toward the lower body, the positioning pin being held so as not to move in a direction perpendicular to the 1 st direction; and at least one engaging hole extending in the 1 st direction and having a 2 nd engaging portion that engages with the 1 st engaging portion so as not to move in the 1 st direction.
In another preferred embodiment, the drop preventing member has two positioning pins and two fitting pins, respectively, and the cartridge main body has two positioning holes and two fitting holes, respectively.
In addition, the disk cartridge of the present invention
Comprising:
a cartridge body comprising: a disk storage section having a disk opening and a bottom, and storing a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening; a chucking opening portion provided at a bottom of the disk storage portion to chuck the disk from outside; and a head opening portion provided at a bottom portion of the disk storage portion for allowing a head for recording and/or reproducing signals to access a 2 nd surface of the disk,
1 st and 2 nd shutters provided on a bottom of the disk storage portion for opening or closing the head opening portion to the outside, and
a rotation member which is held by the 1 st and 2 nd shutters in the disk storage portion and is engaged with the 1 st and 2 nd shutters so that the 1 st and 2 nd shutters can be opened and closed by rotating in the disk storage portion,
Wherein,
the rotating member includes a disk receiving portion having: a contact area which is in contact with an outer peripheral edge of a 2 nd surface of the disk and receives the disk when the 1 st and 2 nd shutters are in a closed state; a groove provided outside the contact region,
the rotating member includes: a disk receiving portion that receives the disk by contacting an outer peripheral edge portion of a 2 nd surface of the disk when the 1 st and 2 nd shutters are in a closed state; and a notch provided in the disk receiving portion so as to be positioned in the head opening portion when the 1 st and 2 nd shutters are in an opened state,
the disk storage unit having a side wall provided along an outer periphery of the bottom portion, and the 1 st and 2 nd shutters having a disk holding unit for holding a center of the disk by shifting the center of the disk from a center of the disk storage unit so that an outer side of the disk comes into contact with the side wall of the disk storage unit in a region where the notch of the rotary member is located when the 1 st and 2 nd shutters are in a closed state,
the 1 st and 2 nd disk holding portions each have: 1 st and 2 nd slopes which are arranged in a direction perpendicular to the bottom of the disk storage portion and are inclined so as to face the bottom; and a horizontal plane disposed between the 1 st and 2 nd slopes and substantially parallel to the bottom.
In addition, the disk cartridge of the present invention
Comprising:
a cartridge body comprising: a disk storage section having a disk opening and a bottom, and storing a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening; a chucking opening portion provided at a bottom of the disk storage portion to chuck the disk from outside; and a head opening portion provided at a bottom portion of the disk storage portion for allowing a head for recording and/or reproducing signals to access a 2 nd surface of the disk,
1 st and 2 nd shutters provided on a bottom of the disk storage portion for opening or closing the head opening portion to the outside, and
a rotation member which is held by the 1 st and 2 nd shutters in the disk storage portion and is engaged with the 1 st and 2 nd shutters so that the 1 st and 2 nd shutters can be opened and closed by rotating in the disk storage portion,
the rotating member includes: a disk receiving portion that receives the disk by contacting an outer peripheral edge portion of a 2 nd surface of the disk when the 1 st and 2 nd shutters are in a closed state; a side wall surrounding an outer periphery of the tray receiving portion; and a notch provided in a part of the disk receiving portion and the side surface such as the head opening when the 1 st and 2 nd shutters are in an opened state, a side wall portion of the notch being provided so as to protrude on an outer peripheral side of the other portion,
The cartridge body has a support portion for supporting a side wall portion in which the cutout is provided, in the vicinity of the head opening portion when the shutter is opened.
In addition, the disk cartridge of the present invention,
comprising:
a cartridge body comprising: a disk storage section having a disk opening and a bottom, and storing a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening; a chucking opening portion provided at a bottom of the disk storage portion to chuck the disk from outside; and a head opening portion provided at a bottom portion of the disk storage portion for allowing a head for recording and/or reproducing signals to access a 2 nd surface of the disk,
1 st and 2 nd shutters provided on a bottom of the disk storage portion for opening or closing the head opening portion to the outside, and
a rotation member which is held by the 1 st and 2 nd shutters in the disk storage portion and is engaged with the 1 st and 2 nd shutters so that the 1 st and 2 nd shutters can be opened and closed by rotating in the disk storage portion,
the rotating member includes a disk receiving portion, wherein the disk receiving portion has: a contact area which is in contact with an outer peripheral edge of a 2 nd surface of the disk and is parallel to a bottom of a disk storage portion which receives the disk when the 1 st and 2 nd shutters are in a closed state; and a non-contact region disposed inside the contact region, not contacting the disc,
The non-contact area of the rotating member and the surfaces of the 1 st and 2 nd shutters facing the disk are corrugated.
In addition, the disk cartridge of the present invention,
comprising:
a cartridge body comprising: a disk storage section having a disk opening and a bottom, and storing a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening; a chucking opening portion provided at a bottom of the disk storage portion to chuck the disk from outside; and a head opening portion provided at a bottom portion of the disk storage portion for allowing a head for recording and/or reproducing signals to access a 2 nd surface of the disk,
1 st and 2 nd shutters provided on a bottom of the disk storage portion for opening or closing the head opening portion to the outside, and
a rotation member which is held by the 1 st and 2 nd shutters in the disk storage portion and is engaged with the 1 st and 2 nd shutters so that the 1 st and 2 nd shutters can be opened and closed by rotating in the disk storage portion,
the cartridge main body has a convex portion around the chucking opening portion and the head opening portion on the bottom portion,
The 1 st and 2 nd shutters have, on a surface opposite to the bottom portion: when the shutter is closed, the 1 st and 2 nd projections of the cartridge main body are sandwiched.
In a further preferred embodiment of the process according to the invention,
and the 1 st and 2 nd shutters respectively rotate with points other than a rotation center of the rotation member as rotation axes, and the 1 st and 2 nd shutters respectively have a 3 rd projection having a height equal to that of the 1 st and 2 nd projections and extending along an arc having the rotation axis as a center on a surface opposite to the bottom.
Further, the disk drive apparatus according to the present invention is a disk drive apparatus that carries the disk cartridge described above and that records and/or reproduces information on and/or from the disk.
Further, a disk drive device of the present invention includes:
a drive mechanism for rotating the disc;
a magnetic head for performing an operation of recording information on the disk and/or reproducing information from the disk;
a support structure for supporting the disk cartridge as claimed in claim 2, in which the disk is accommodated, at a predetermined position with respect to the drive mechanism; and
and a shutter opening/closing mechanism that opens the shutter of the disk cartridge and releases the disk holding operation in the disk holding section of the disk cartridge so that the disk can be rotated in the disk storage section of the disk cartridge.
In a further preferred embodiment, there is also a clamper for fixing the disc on the drive mechanism.
In another preferred embodiment, the support mechanism has a positioning pin for determining the position of the disk cartridge.
The present invention provides a method of manufacturing a disk cartridge, which relates to a method of manufacturing a disk cartridge including a cartridge main body having a disk storage section which includes a disk opening and a bottom portion and stores a disk having a 1 st surface and a 2 nd surface in a rotatable state so that the 1 st surface is exposed to the outside from the disk opening, the method comprising:
a step of arranging 1 st and 2 nd shutters for opening and closing the head opening portion on a lower body of a cartridge having a chucking opening portion for chucking a disk from the outside and a head opening portion for allowing a head for recording and/or reproducing a signal to access the disk, and arranging a rotating member for driving the 1 st and 2 nd shutters on the 1 st and 2 nd shutters;
a step of bonding a cartridge upper body having the disk opening portion and the cartridge lower body to form a cartridge main body;
Inserting the disk into the cartridge body from the disk opening; and
and a step of fixing the drop prevention member to the upper surface of the cartridge main body so that a part of the drop prevention member protrudes toward the disk opening.
In another preferred embodiment, the bonding between the upper and lower cases is performed by ultrasonic welding.
In another preferred embodiment, the cartridge upper body and the cartridge lower body are made of ABS resin, and the rotating member and the 1 st and 2 nd shutters are made of polyacetal.
Drawings
Fig. 1 is a perspective view showing the entire structure of a disk cartridge according to embodiment 1 of the present invention.
Fig. 2 is a perspective view of the disk cartridge of fig. 1 from below.
Fig. 3 is an exploded perspective view showing a state after the disk cartridge of fig. 1 is exploded.
Fig. 4 is a sectional view showing the vicinity of the disk holding member of the disk cartridge of fig. 1.
Fig. 5 is a sectional view showing the vicinity of the disk holding member of the disk cartridge of fig. 1.
Fig. 6 is a perspective view showing a state where the shutter is opened and the positioning pin is inserted in the disk cartridge of fig. 1.
Fig. 7 is a sectional view of the vicinity of the disk holding member in fig. 6.
Fig. 8 is a sectional view of the vicinity of the disk holding member in fig. 6.
Fig. 9 is a plan view showing the entire configuration of the disk cartridge according to embodiment 2 of the present invention.
Fig. 10 is a plan view showing a state in which the disk cartridge of fig. 9 is opened.
Fig. 11 is a plan view showing the entire configuration of the disk cartridge according to embodiment 3 of the present invention.
Fig. 12 is a plan view showing a state in which the disk cartridge of fig. 11 is opened.
Fig. 13 is a plan view showing the entire structure of the disk cartridge according to embodiment 4 of the present invention.
Fig. 14 is a plan view showing a state in which the disk cartridge of fig. 13 is opened.
Fig. 15 is a plan view showing an overall configuration in a state where the shutter of the disk cartridge is closed in embodiment 5 of the present invention.
Fig. 16 is a sectional view of the disk holding member in the disk cartridge of fig. 15.
Fig. 17 is a plan view showing an overall structure in a state where a shutter of the disk cartridge of fig. 15 is opened.
Fig. 18 is a sectional view of the disk holding member in the disk cartridge of fig. 17.
Fig. 19 is a plan view showing the entire configuration in a state where the shutter of the disk cartridge is closed in embodiment 6 of the present invention.
Fig. 20 is a plan view showing an overall structure in a state where a shutter of the disk cartridge of fig. 19 is opened.
Fig. 21 is a plan view showing the entire configuration in a state where the shutter of the disk cartridge is closed in embodiment 7 of the present invention.
Fig. 22 is a plan view showing an overall structure in a state where a shutter of the disk cartridge of fig. 21 is opened.
Fig. 23 is a perspective view showing the entire structure of the disk cartridge according to embodiment 8.
Fig. 24 is an exploded perspective view showing a state after the disk cartridge of fig. 23 is exploded.
Fig. 25 is a perspective view showing a state where the shutter is closed in the case where the cartridge upper body and the disc are not present in the magnetic disk cartridge of fig. 23.
Fig. 26 is a perspective view showing a state where the shutter is opened in the case where the cartridge upper body and the disc are not present in the magnetic disk cartridge of fig. 23.
Fig. 27 is a perspective view showing a state where the shutter is closed in the case where the disk cartridge of fig. 23 is not provided.
Fig. 28 is a perspective view showing a state where the shutter is opened in the case where there is no disc in the disc cartridge of fig. 23.
Fig. 29 is a partial sectional view showing a section through the disc center of the disc cartridge of fig. 23.
Fig. 30 is a sectional view showing a part of a shutter of the disk cartridge of fig. 23.
Fig. 31 is a partial plan view showing the vicinity of the operation portion of the disk cartridge of fig. 23.
Fig. 32 is a perspective view showing a drop preventing member of the disk cartridge of fig. 23.
Fig. 33 is a front view showing a direction in which the disk cartridge of fig. 23 is inserted into the drive apparatus.
Fig. 34 is a perspective view showing the entire structure of the disk cartridge according to embodiment 9 of the present invention.
Fig. 35 is an exploded perspective view showing the disk cartridge of fig. 34 in an exploded state.
Fig. 36 is a perspective view showing a state where the shutter is closed in the case where the disk cartridge of fig. 34 is not provided.
Fig. 37 is a perspective view showing a state where the shutter is opened in the case where there is no disc in the disc cartridge of fig. 34.
Fig. 38 is a partial cross-sectional view showing a state where a shutter is closed, taken through the disk center of the disk cartridge of fig. 34.
Fig. 39 is a partial sectional view showing a state where the shutter is opened, taken through the disc center of the disc cartridge of fig. 34.
Fig. 40 is a sectional view of the disk cartridge of fig. 34, taken through the center of the disk and near the outer periphery of the disk, showing the shutter closed.
Fig. 41 is a sectional view of the disk cartridge of fig. 34, taken through the center of the disk and near the outer periphery of the disk, showing the shutter in an open state.
Fig. 42 is a plan view showing the entire structure of the disk cartridge according to embodiment 10 of the present invention.
Fig. 43 is an exploded perspective view showing a state after the disk cartridge of fig. 42 is exploded.
Fig. 44 is a perspective view of the disk cartridge of fig. 42 in a state where the shutter is closed without the disk.
Fig. 45 is a perspective view showing a state where the shutter is opened in the case where there is no disc in the disc cartridge of fig. 42.
Fig. 46 is a partial cross-sectional view showing a state where a shutter is closed, taken through the disc center of the disc cartridge of fig. 42.
Fig. 47 is a partial sectional view showing a state where a shutter is opened, taken through the disc center of the disc cartridge of fig. 42.
Fig. 48 is a sectional view showing a state in which a shutter is closed, taken through a section near the disk outer periphery of the disk cartridge of fig. 42 at the disk center.
Fig. 49 is a sectional view showing a state where a shutter is opened, taken through the vicinity of the disk outer periphery of the disk cartridge of fig. 42 at the disk center.
Fig. 50 is a perspective view showing the entire structure of the disk cartridge according to embodiment 11 of the present invention.
Fig. 51 is an exploded perspective view showing a state after the disk cartridge in fig. 50 is exploded.
Fig. 52 is a perspective view of the disk cartridge of fig. 50 in a state where the shutter is closed without the disk.
Fig. 53 is a perspective view showing a state where the shutter is opened in the case where there is no disc in the disc cartridge of fig. 50.
Fig. 54 is a partial cross-sectional view showing a state where a shutter is closed, taken through the disc center of the disc cartridge of fig. 50.
Fig. 55 is a partial sectional view showing a state where the shutter is opened, taken through the disc center of the disc cartridge of fig. 50.
Fig. 56 is a sectional view showing a portion of a shutter of the disk cartridge of fig. 50.
Fig. 57 is a plan view showing the vicinity of the operation portion of the disk cartridge of fig. 50.
Fig. 58 is a perspective view showing a state where the shutter is closed in the case where there is no disc in the disc cartridge according to embodiment 12 of the present invention.
Fig. 59 is a sectional view showing a state where the shutter is closed, taken through the disk center of the disk cartridge of fig. 58.
Fig. 60 is a perspective view showing a state where a shutter is opened in the case where there is no disc in the disc cartridge of fig. 58.
Fig. 61 is a sectional view showing a state where a shutter is opened, taken through the disk center of the disk cartridge of fig. 58.
Fig. 62 is a perspective view showing a state where the shutter is closed when no disk is present, in a modification of the disk cartridge of fig. 58.
Fig. 63 is a perspective view of the disk cartridge of fig. 61, showing a state where the shutter is opened without the disk.
Fig. 64 is a perspective view showing the entire structure of the disk cartridge according to embodiment 13 of the present invention.
Fig. 65 is an exploded perspective view showing a state after the disk cartridge of fig. 64 is exploded.
Fig. 66 is a schematic plan view showing a state where the shutter of the disk cartridge of fig. 64 is closed.
Fig. 67 is a schematic plan view showing a state where a shutter of the disk cartridge of fig. 64 is opened.
Fig. 68 is a detailed perspective view of the shutter locking portion.
Fig. 69 is a detailed sectional view of the disk holding portion of the shutter.
FIG. 70 is a sectional view showing the shape of the joint surface of two shutters.
Fig. 71 is a sectional view showing the shape of the joint surface of the two shutters.
Fig. 72 is a perspective view showing the entire structure of the disk cartridge according to embodiment 14 of the present invention.
Fig. 73 is a perspective view of a shutter of the disk cartridge of fig. 72.
Fig. 74 is an enlarged perspective view of the disk cartridge of fig. 72 in the vicinity of the disk holding portion.
Fig. 75 is an enlarged perspective view of the disk cartridge of fig. 72 in the vicinity of the disk holding portion.
Fig. 76 is an enlarged perspective view of the disk cartridge of fig. 72 in the vicinity of the disk holding portion.
Fig. 77 is a schematic plan view showing a shutter closed state in the disk cartridge of fig. 72.
Fig. 78 is a schematic plan view showing a shutter open state in the disk cartridge of fig. 72.
Fig. 79 is a sectional view taken along line B-B in fig. 78.
Fig. 80 is a cross-sectional view taken along line C-C of fig. 78.
Fig. 81 is a sectional view taken along line a-a in fig. 78.
Fig. 82 is a sectional view showing a modification of the disk receiving portion.
Fig. 83 is an exploded perspective view showing an exploded state of the disk cartridge according to embodiment 15 of the present invention.
Fig. 84 is a schematic plan view showing a shutter closed state in the disk cartridge of fig. 83.
Fig. 85 is a schematic plan view showing a shutter open state in the disk cartridge of fig. 83.
Fig. 86 is a cross-sectional view taken along line D-D of fig. 84.
Fig. 87 is a sectional view taken along line E-E in fig. 85.
Fig. 88 is a perspective view showing the entire structure of the disk cartridge according to embodiment 16 of the present invention.
Fig. 89 is an exploded perspective view showing a state after the disk cartridge 88 is exploded.
Fig. 90 is a schematic plan view showing a shutter closed state in the disk cartridge of fig. 88.
Fig. 91 is a schematic plan view showing a shutter open state in the disk cartridge of fig. 88.
Fig. 92 is a schematic plan view showing a modification of the disk cartridge of fig. 88, showing a state where a shutter of the disk cartridge is closed.
Fig. 93 is a schematic plan view showing a shutter opened state in the disk cartridge of fig. 92.
Fig. 94 is a perspective view showing the entire structure of the disk cartridge according to embodiment 17 of the present invention.
Fig. 95 is an exploded perspective view showing a state after the disk cartridge of fig. 94 is exploded.
Fig. 96 is a schematic plan view showing a shutter closed state in the disk cartridge of fig. 94.
Fig. 97 is a schematic plan view showing a shutter open state in the disk cartridge of fig. 94.
Fig. 98 is a perspective view showing the entire structure of the disk cartridge according to embodiment 18 of the present invention.
Fig. 99 is an exploded perspective view showing a state after the disk cartridge of fig. 98 is exploded.
Fig. 100 is a schematic plan view showing a shutter closed state in the disk cartridge of fig. 98.
Fig. 101 is a schematic plan view showing a shutter open state in the disk cartridge of fig. 98.
Fig. 102 is an exploded perspective view showing a state after the disk cartridge according to embodiment 19 of the present invention is exploded.
Fig. 103 is an enlarged sectional view of the disk cartridge of fig. 102 in the vicinity of the disk holding portion.
Fig. 104 is an exploded perspective view showing an exploded state of the disk cartridge according to embodiment 20 of the present invention.
Fig. 105 is a plan view showing a state where the cartridge upper body of the disk cartridge shown in fig. 104 is removed.
FIG. 106 is a sectional view taken along line F-F in FIG. 105.
Fig. 107 is a plan view showing the shutter and the rotating member in the shutter closed state of the disk cartridge shown in fig. 104.
Fig. 108 is a sectional view taken along line G-G of fig. 107.
Fig. 109 is a plan view showing the shutter and the rotation member in the shutter open state of the disk cartridge shown in fig. 104.
Fig. 110 is a sectional view taken along line H-H of fig. 109.
Fig. 111 is a perspective view showing a shield member of the disk cartridge shown in fig. 104.
Fig. 112 is a sectional view showing a state in which the shield member shown in fig. 111 is supported by the cartridge upper body.
Fig. 113 is a sectional view showing a configuration of an end portion of the shield member in the shutter closed state.
Fig. 114 is a sectional view showing a configuration of the center of the shield member in the shutter closed state.
Fig. 115 is a sectional view showing a configuration of an end portion of the shield member in a shutter open state.
Fig. 116 is a sectional view showing a configuration of the center of the shield member in the shutter open state.
Fig. 117 is a schematic plan view for explaining a modification of the disk cartridge shown in fig. 104.
Fig. 118 is a schematic plan view for explaining a modification of the disk cartridge shown in fig. 104.
Fig. 119 is an exploded perspective view showing an exploded state of the disk cartridge according to embodiment 21 of the present invention.
Fig. 120 is an enlarged view showing the vicinity of the pickup history hole of the disk cartridge shown in fig. 119.
Fig. 121 is a top view of the disk cartridge shown in fig. 119.
Fig. 122 is a view showing the vicinity of the rotation axis of the J-J section of fig. 119.
FIG. 123 is a view showing the vicinity of the engaging portion in a cross-sectional view taken along line J-J of FIG. 119.
Fig. 124 is a cross-sectional view taken along line K-K of fig. 119.
Fig. 125 is a plan view showing a state where the drop prevention member is released in the disk cartridge shown in fig. 119.
Fig. 126 is a view showing the vicinity of the rotation axis of the J-J section of fig. 125.
FIG. 127 is a view showing the vicinity of the engaging portion in a cross-sectional view taken along line J-J of FIG. 125.
Fig. 128 is a partial plan view for explaining a mode of modification of the disk cartridge shown in fig. 119.
Fig. 129 is a partial plan view for explaining a mode of modification of the disk cartridge shown in fig. 119.
Fig. 130 is a partial plan view for explaining another mode of modification of the disk cartridge shown in fig. 119.
Fig. 131 is a partial plan view for explaining another mode of modification of the disk cartridge shown in fig. 119.
Fig. 132 is a plan view showing a disk cartridge according to embodiment 22 of the present invention.
Fig. 133 is a sectional view taken along line L-L of fig. 132.
Fig. 134 is an enlarged view showing a part of a sectional view taken along line L-L of fig. 132.
Fig. 135 is a schematic view showing a part of the enlarged view 132.
Fig. 136 is an enlarged view showing another part of the sectional view taken along line L-L of fig. 132.
Fig. 137 is an enlarged view showing another part of the L-L sectional view of fig. 132.
Fig. 138 is a diagram for explaining a space provided below the disk in the disk cartridge according to embodiment 23 of the present invention.
Fig. 139 is a diagram illustrating the curvature of the disc.
Fig. 140 shows an example of a space provided below the disk.
Fig. 141 shows another example of a space provided below the disk.
Fig. 142 is a plan view showing a disk cartridge according to embodiment 23 of the present invention.
Fig. 143 is a sectional view taken along line a-a of fig. 142.
Fig. 144 is an exploded perspective view showing an exploded state of the disk cartridge shown in fig. 142.
Fig. 145 is a plan view showing the disk cartridge of fig. 142.
FIG. 146 is a cross-sectional view taken along line N-N and line O-O of FIG. 145.
Fig. 147 is a perspective view showing a portion of the 1 st shutter and the 2 nd shutter of the disk cartridge shown in fig. 142 enlarged.
Fig. 148 is a view showing a cross section taken along line M-M of fig. 145.
Fig. 149 is a perspective view showing a portion of the 1 st and 2 nd shutter of the disk cartridge shown in fig. 142 enlarged.
Fig. 150 is a sectional view for explaining another modification of the disk cartridge shown in fig. 145.
Fig. 151 is a plan view showing the upper case body removed from the disk cartridge according to embodiment 24 of the present invention.
Fig. 152 is a view showing a cross section taken along line a-a of fig. 151.
Fig. 153 is a plan view showing a state in which a shutter of the cartridge upper body shown in fig. 151 is opened.
Fig. 154 is a plan view showing a state where the shutter of the disk cartridge shown in fig. 151 is opened.
Fig. 155 is a view showing a state of contact between the disk holding portion and the disk.
Fig. 156 is a view showing another state of contact between the disk holding portion and the disk.
Fig. 157 is a view showing another contact state between the disk holding portion and the disk.
Fig. 158 is a perspective view showing a state in which a disk holding section holds a disk in a vertically supported disk cartridge.
Fig. 159 is a cross-sectional view taken along line Q-Q of fig. 158.
Fig. 160 is a perspective view showing a state in which a disk holding section holds a disk in a vertically supported disk cartridge.
Fig. 161 is a cross-sectional view taken along line Q-Q of fig. 160.
Fig. 162 is an exploded perspective view showing a state after the disk cartridge according to embodiment 25 of the present invention is exploded.
Fig. 163 is a plan view of the disk cartridge of fig. 162 shown in a state where the cartridge upper body is removed.
FIG. 164 is a view showing a section taken along line R-R of FIG. 163.
Fig. 165 is another plan view showing the disk cartridge of fig. 162 in a state where the cartridge upper body is removed.
Fig. 166 is another plan view showing the disk cartridge of fig. 162 in a state where the cartridge upper body is removed.
Fig. 167 is a view showing a cross section taken along line S-S of fig. 166.
Fig. 168 is another plan view showing the disk cartridge of fig. 162 shown in a state where the cartridge upper body is removed.
FIG. 169 is a sectional view taken along line S-S of FIG. 168.
FIG. 170 is a cross-sectional view taken along line T-T of FIG. 168.
FIG. 171 is a cross-sectional view taken along line T-T of FIG. 168, but without the rotating member receiving portion.
Fig. 172 is another plan view showing the disk cartridge of fig. 162 with the cartridge upper body removed.
FIG. 173 is a cross-sectional view taken along line U-U of FIG. 172.
Fig. 174 is another plan view of the disk cartridge of fig. 162, showing a state in which the cartridge upper body is removed.
Fig. 175 is another plan view of the disk cartridge of fig. 162 with the cartridge upper body removed.
Fig. 176 is an enlarged view showing a part of the figure.
Fig. 177 is an exploded perspective view showing a state after the disk cartridge according to embodiment 26 of the present invention is exploded.
Fig. 178 is a perspective view showing the vicinity of the region where the drop prevention member and the drop prevention member of the cartridge upper body are attached in the state where the drop prevention member is removed in the disk cartridge shown in fig. 177.
Fig. 179 is a cross-sectional view of the positioning hole and the fitting hole of the cartridge upper body of the disk cartridge shown in fig. 177.
Fig. 180 shows a structure of the disk cartridge shown in fig. 177 in the vicinity of the disk holding portion with the shutter closed.
FIG. 181 shows a cross-section of one of the insert portions shown in FIG. 180.
FIG. 182 shows a cross-section through one of the insert portions shown in FIG. 180.
Fig. 183 is a perspective view of the vicinity of the disk holding portion in the case where the disk holding portion holds the disk when the shutter is closed in the disk cartridge shown in fig. 177.
Fig. 184 shows a cross section of a disk holding section including the disk cartridge shown in fig. 177.
Fig. 185 shows a cross section of a disk holding portion including the disk cartridge shown in fig. 177.
Fig. 186 is a perspective view showing the disk cartridge shown in fig. 177 with the cartridge upper body removed, showing a state where the shutter is opened.
Fig. 187 is a perspective view showing the vicinity of the front end of the head opening 11h of the disk cartridge shown in fig. 177 in an enlarged view.
Fig. 188 is a perspective view showing the disk cartridge shown in fig. 177 with the cartridge upper body removed, showing a state in which the shutter is opened.
Fig. 189 is a plan view showing the shutter and the lower body of the cartridge.
Fig. 190 is a perspective view of the disk cartridge shown in fig. 177 with the cartridge upper body and the rotating member removed, showing a shutter closed state.
FIG. 191 is a sectional view showing a head aperture portion of the structure shown in the cross-sectional view 190.
Fig. 192 (a) to (c) are perspective views for explaining a method of manufacturing the disk cartridge shown in fig. 177.
Fig. 193 (a) and (b) are perspective views for explaining a method of manufacturing the disk cartridge shown in fig. 177.
Fig. 194 is a perspective view showing a main part of the disk drive device of the present invention.
Detailed Description
(embodiment 1)
Hereinafter, the disk cartridge 301 according to embodiment 1 of the present invention will be described with reference to fig. 1, which is a perspective view of the entire configuration of the disk 100 and the disk cartridge 301 viewed from obliquely above, fig. 2, which is a perspective view of the disk cartridge 301 viewed from obliquely below, and fig. 3, which is a perspective view of each part showing an exploded state of the disk cartridge.
The disc 100 has the 1 st and 2 nd surfaces. Fig. 1 shows the 1 st side, i.e., the side on which a label or the like of a normal disc is drawn. A signal recording surface 100A as a 2 nd surface of the disc 100 is shown as a back surface in fig. 3.
As shown in fig. 1, the disk cartridge 301 includes a cartridge lower body 11, a cartridge upper body 12, disk holding members 13, 14, and a shutter 21.
As shown in fig. 3, the cartridge lower body 11 has: a chucking opening 11c opened so that a chucking member such as a spindle motor for rotating the disk 100 from the outside can enter, and a head opening 11h opened so that at least one of the heads for reproducing and recording signals is accessible to the signal recording surface 100A of the disk 100. Further, the disk drive device has a pair of positioning holes 11w for fitting pins for determining the positions of a pair of cartridges of the disk drive device to determine the position of the disk cartridge 301 with respect to the disk drive unit. The cartridge lower body 11 is opposed to the signal recording surface 100A of the disc 100.
The cartridge upper body 12 is configured to take in and out the disk 100, and has a circular disk opening 12w that opens the entire projection area of the disk 100 so as to expose the upper surface of the magnetic disk. The upper case body 12 and the lower case body 11 are bonded or welded at their outer peripheral portions to constitute the case main body 10.
The disk storage section 10d (fig. 1) for storing the disk 100 is constituted by a 1 st inner surface 11u of the lower case 11 facing the signal recording surface 100A of the disk 100 and a 2 nd inner surface 12i of the upper case 12, which is substantially cylindrical and constitutes a disk opening 12 w. Thus, the 1 st inner surface 11u serves as a bottom surface of the disk storage portion 10 d. On the 1 st inner side surface 11u of the cartridge lower body 11, a protective layer 11p is provided which prevents scratches to the disk 100 or the intrusion of dust to the signal recording surface 100A.
The protective layer 11p may be appropriately selected from a scratch-resistant nonwoven fabric, a dust-resistant nonwoven fabric, a scratch-resistant coating, and a dust-resistant coating. In the present embodiment, a sheet made of dust-proof nonwoven fabric is attached as a protective layer or ultrasonically welded.
In the disk housing portion 10d, a space is provided between the 2 nd inner side surface 12i and the disk 100 to such an extent that the disk 100 can be rotated. The upper portion of the disk storage portion 10d is a disk opening 12w, and one surface of the disk 100 held in the disk storage portion 10d is exposed to the outside through the disk opening 12 w.
As shown in fig. 3, the disk holding member 13 has a pair of elastic portions 13d and a hole portion 13w that obliquely penetrates therethrough. The disk cartridge 301 has two disk holding members 13 having the same shape. The elastic portion 13d of the disk holding member 13 is held between the cartridge upper body 12 and the cartridge lower body 11, and the front end of the disk holding member 13 faces the direction of the arrow 13B, so that the disk 100 is pressed against the 1 st inner side surface 11 u. The pair of disk holding members 13 are arranged such that the hole portions 13w are provided substantially directly above the pair of positioning holes 11 w.
The disk holding member 14 has a rotation shaft 14s and an elastic portion 14 d. The disk holding member 14 is fixed to the cartridge body 10 in such a manner that the rotation shaft 14s can be rotated. The elastic portion 14d is held by the cartridge upper body 12 and the cartridge lower body 11, and the leading end of the disk holding member 14 faces in the direction of arrow 14B. Therefore, the disk 100 is pressed against the 1 st inner surface 11 u.
The shutter 21 is provided on the outer side of the cartridge lower body 11 opposite to the signal recording surface 100A of the disc 100. As shown in fig. 1 and 2, the shutter is moved in the direction of the arrow 21A or 21B so as to open or close the chucking opening 11c and the head opening 11h to the outside. The shutter spring 31 is pulled apart between the shutter 21 and the cartridge body 10, applying a force in a direction to close the shutter 21.
As shown in fig. 2, on the surface of the cartridge main body 10 (cartridge lower body 11), a logo surface or a recess 10f that can express the contents written into the housed disc 100 and the like is provided. The pair of concave portions 10c provided on the left and right of the cartridge main body 10 can be used as concave portions for engaging and positioning for drawing when the drive apparatus draws and loads the disk cartridge 301 or when the disk cartridge 301 is stored in a changer (changer). In addition, the concave portion 10g provided only on one side has a wrong insertion prevention shape, and normally engages with the convex portion provided on the drive apparatus only in the case where the disk cartridge 301 is inserted in the correct direction. On the other hand, in the case where the disk cartridge 301 is erroneously inserted into the disk drive unit in the up-down direction or the back-and-forth direction, the normal insertion is not possible due to the mutual interference. Thus preventing erroneous insertion.
Here, with reference to fig. 4 and 5, the operation of holding the disk 100 by the disk holding members 13 and 14 will be described in further detail. Fig. 4 and 5 are cross-sectional views of the disk holding members 13 and 14 in the disk radial direction, respectively, in a state where the disk 100 shown in fig. 1 to 3 is held.
As shown in fig. 4 and 5, the front ends of the disk holding members 13 and 14 are provided with inclined surfaces 13 'and 14' that are inclined so as to extend above the outer periphery of the disk in the disk projection area. The disk holding members 13 and 14, which are urged in the directions of arrows 13B and 14B by the elastic portions 13d and 14d, respectively, abut the inclined surfaces 13 ', 14' against the outer peripheral edge 100c of the disk 100, hold the disk 100, and press the disk 100 in the thickness direction 100t, thereby bringing the signal recording surface 100A into surface contact with the sheet 11 p. Thus, the disc 100 remains fixed to the cartridge body 10. In this state, the outer peripheral portion of the signal recording surface 100A of the disc 100 is in close contact with the sheet 11p, and therefore dust can be prevented from adhering to the signal recording surface 100A.
Next, referring to fig. 6, 7, and 8, the disk 100 removal operation will be described in further detail by the disk holding members 13 and 14.
Fig. 6 is a sectional view of the disc cartridge with the cartridge upper body 12 and the disc 100 removed. In fig. 6, the shutter 21 is configured such that the chucking opening 11c and the head opening 11h are opened to the outside by pressing the L-shaped portion 21s in the direction of the arrow 21A by a shield opening mechanism of a disk drive device not shown. Further, the pair of cartridge positioning pins 210 of the disk drive apparatus are fitted into the positioning holes 11w of the cartridge main body 10.
Further, fig. 7 is a cross-sectional view of the disk holding member 13 in the disk radial direction in the state of fig. 6, and fig. 8 is an enlarged view of a main portion showing the relationship of the disk holding member 14 and the shutter 21 in the state of fig. 6.
As shown in fig. 7, in the disk holding member 13, when the cartridge positioning pin 210 of the disk drive device is inserted from the positioning hole 11w, the cartridge positioning pin 210 is fitted into the hole portion 13w penetrating the inclined surface of the disk holding member 13. Therefore, the disk holding member 13 is lifted in the direction 13A, and the disk 100 is changed from the pressed state to the opened free state by the slope 13'. At this time, the eaves 13e at the front end of the disk holding member 13 still protrude along the disk outer periphery in the disk projection area. Therefore, in the disk drive device configured such that the disk 100 is vertical, even in the disk open state, the disk 100 can be prevented from falling off the disk cartridge 301.
In the disk holding member 14, as shown in fig. 8, when the shutter is in the open state, a guide rib (guide lip)21x provided to the shutter pushes up the top of the recess 14w protruding into the recess 14w of the disk holding member 14. Therefore, the disk holding member 14 is lifted in the direction 14A, and the disk 100 is changed from the pressure contact to the open free state by the slope 14'. At this time, the eaves 14e at the front end of the disk holding member 14 still protrude along the disk outer periphery of the disk projection area. Therefore, in the disk drive device configured such that the disk 100 is vertical, even if the disk is already in the released state, the disk 100 can be prevented from falling off the disk cartridge 301.
Further, if the disk is forcibly taken out, three places must be simultaneously released to take out the disk due to the cooperation of the disk holding members 14 and the pair of disk holding members 13. Therefore, the disc can be prevented from being easily taken out by the operator.
In the present embodiment, as shown in fig. 2, a brush or a dust removing material may be provided at the end portion 21r of the shutter 21 on the side opposite to the disk 100, so that dust on the signal recording surface 100A of the disk 100 may be removed in accordance with the opening operation of the shutter 21. Further, a locking (lock) device may be provided to fixedly support the disk holding member on the cartridge main body 10 in a state where the disk is held.
(embodiment 2)
Fig. 9 is a plan view showing the entire configuration of the disk cartridge 302 according to embodiment 2 in a state where the disk 100 is held, and fig. 10 is a plan view showing the entire configuration in a state where the disk 100 is opened. A disk cartridge 302 according to embodiment 2 of the present invention will be described with reference to fig. 9 and 10. In fig. 9 and 10, the same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.
The disk cartridge 302 differs from the disk cartridge 301 of embodiment 1 in the disk holding members, and as shown in fig. 9, the disk cartridge 302 has a pair of disk holding members 15, 16 that slide in the direction of arrows 15A or 15B, respectively.
Each disk holding member 15 has an elastic portion 15d, and the disk 100 is held and fixed to the cartridge main body 10 by a slope 15' provided at the front end, similarly to the disk holding members 13 and 14 in embodiment 1, with the elastic portion 15d facing in the direction of arrow 15B.
The disk holding member 16 has a rotation shaft 16c, and the disk holding member 16 is provided on the cartridge body 10 so as to be rotatable about the rotation shaft 16. The disk holding member 16 is also the same as the disk holding members 13, 14 in embodiment 1, and the disk 100 is held and fixed to the cartridge main body 10 by a slope 16' provided at the front end. The disk holding member 16 has a connecting pin 15p, and a groove portion 16g provided in the disk holding member 16 cooperates with the connecting pin 15 p.
When the pair of cartridge positioning pins 210 of the disk drive apparatus are fitted into the positioning holes 11w of the cartridge main body 10, as shown in fig. 10, the projections 15s are pressed against the positioning pins 210, and therefore the disk holding member 15 moves in the direction of arrow 15A, and the inclined surface 15' releases the disk 100. Further, while the disk holding member 15 is moved, the disk holding member 16 is rotated in the arrow 16A direction, and the disk 100 is also released by the slope 16'.
(embodiment 3)
Fig. 11 is a plan view showing the entire configuration of the state of holding the tray 100. Fig. 12 is a plan view showing the entire structure of the opened disk 100. A disk cartridge 303 according to embodiment 3 of the present invention will be described with reference to fig. 11 and 12. In fig. 11 and 12, the same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.
The disk cartridge 303 is different from the disk cartridge 301 of embodiment 1 in the disk holding members, and as shown in fig. 11, the disk cartridge 303 has a pair of disk holding members 17 and 18 facing the directions of arrows 17B and 18B, respectively. The respective disk holding members 17, 18 are formed integrally with the cartridge main body 10.
The disk holding member 17 has an elastic portion 17d, and the elastic portion 17d faces the direction of arrow 17B. The disk holding member 17 is also the same as the disk holding members 13, 14 in embodiment 1, and the disk 100 is held and fixed to the cartridge main body 10 by a slope 17' provided at the front end.
The disk holding member 18 also has an elastic portion 18d, and the disk holding member 18 is oriented in the direction of arrow 18B by the elastic portion 18 d. Further, the disc 100 is kept fixed to the cartridge body 10 by the slope 18' provided at the front end.
When the disk cartridge 303 is inserted into the disk drive apparatus 200, the pair of disk release pins 217 provided in the disk drive apparatus 200 presses the protrusions 17s of the disk holding member 17. Thus, as shown in fig. 12, the tray holding member 17 releases the tray 100. Further, at the same time, the pair of disk release pins 218 provided in the disk drive device 200 also abut on the side surface 18s of the disk holding member 18, and the disk holding member 18 releases the disk 100.
(embodiment 4)
Fig. 13 is a plan view showing the entire configuration of the state of holding the tray 100. Fig. 14 is a plan view showing the entire structure of the opened state of the disc 100. A disk cartridge 304 according to embodiment 4 of the present invention will be described with reference to fig. 13 and 14. In fig. 13 and 14, the same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.
The disk cartridge 304 includes a ring-shaped disk holding member 19, which is different from the disk cartridge 301 according to embodiment 1.
As shown in fig. 13, the disk holding member 19 is formed of an annular elastic member such as a rubber band, which can be freely changed in shape. The disk holding member 19 has an elliptical shape when no force is applied from the outside, but may be deformed into a substantially circular shape when a force is applied from the outside. When the disk holding member 19 is deformed into a substantially circular shape, the inner diameter thereof becomes larger than the diameter of the disk 100.
As shown in fig. 13, the disk holding member 19 is connected to the disk 100 in a plurality of positions having an elliptical shape, holding the disk 100 fixed to the cartridge body 10. As shown in fig. 14, when the disk cartridge 304 is inserted into the disk drive apparatus 200, the pair of projections 219 provided in the disk drive apparatus 200 press the long axis side of the annular disk holding member 19, and the disk holding member 19 is deformed. Therefore, the disk holding member 19 has a substantially circular shape, and the disk 100 and the disk holding member 19 do not contact each other. I.e. the disc holding member 19 releases the disc 100.
In order to release the disk 100, a force for deforming the disk holding member 19 may be applied to the disk holding member 19 by a convex portion of the disk drive device that fits into the recess 10g (fig. 2) for preventing erroneous insertion. Alternatively, the convex portion of the disk drive apparatus may be fitted into the concave portions 10c (fig. 2) for drawing in the disk drive apparatus provided on the left and right of the disk cartridge 304, and may be applied to the disk holding member 19.
(embodiment 5)
Hereinafter, embodiment 5 of the present invention will be described with reference to fig. 15 to 18. Fig. 15 and 17 are plan views showing the structure of the remaining portion of the disk cartridge 305 according to the present embodiment after the upper body is removed. Fig. 15 shows a state where the opening portions 11h and 11c are closed by the shutter 21, and fig. 17 shows a state where the opening portions 11h and 11c are opened by the shutter 21. Fig. 16 and 18 show the state of the disk holding portion 43 in the closed state and the open state of the shutter 21.
In the present embodiment, the same components as those of the disk cartridge of embodiment 1 are denoted by the same reference numerals.
The disk cartridge of the present embodiment is characterized in that: the disk holding and releasing operation of the disk holding member 43 is interlocked with the opening and closing operation of the shutter 21 by the disk holding interlocking member 44.
As shown by an arrow 44A in fig. 15 and 17, the disk holding interlocking member 44 is provided on the 1 st inner side surface 11u of the lower disk cartridge body 11 in such a manner as to be able to move rotationally around the clamp opening portion 11c of the lower disk cartridge body 11. The disk holding interlocking member 44 has a fan shape in which a ring having the chucking opening 11c as an inner diameter is partially cut.
The disk holding interlocking member 44 is provided with an engaging pin 47 projecting from the cartridge lower body 11 side (toward the back of the paper surface in fig. 15 and 17). The fitting pin 47 and the guide grooves 11m and 21m for fitting are provided on the lower case body 11 and the shutter 21, respectively. Further, a plurality of projections 45 projecting outward and toward the upper side of the cartridge (in the direction of the front surface in the paper plane in fig. 15 and 17) are provided on the outer periphery of the disk holding interlocking member 44. A non-woven fabric or a coating material for preventing the disk 100 from being scratched or dust from adhering to the signal recording surface is provided on the upper surface of the disk holding interlocking member 44.
A plurality of disk holding members 43 are provided at intervals in the region of the cartridge lower body 11 in such a manner that the outer peripheral portion of the disk can be held when the disk is housed in the disk cartridge. Although only 3 disk holding members 43 are shown in fig. 15 and 17, two, 4, or more disk holding members 43 may be provided. The disk holding members 43 are held by the cartridge lower body 11 so as to slide on the rotation shafts 43A as axes, respectively.
As shown in fig. 16, the disk holding member 43 is provided so that a part thereof overlaps the vicinity of the outer periphery of the disk holding interlocking member 44. Further, the disk holding member 43 is pressed in a direction 43B toward the cartridge lower body 11 by a mechanism (not shown in fig. 16) such as the elastic portion 14d shown in fig. 5. As a result, the inclined surface 43' of the disk holding member 43 presses the disk 100 in the direction 43B while abutting against the edge of the disk 100, and the disk 100 is held while being connected to the disk holding interlocking member 44.
As shown in fig. 15, when a disk cartridge holding a disk (not shown) is inserted in the direction of arrow 1A with respect to the disk drive apparatus 200, the shutter opening/closing lever (not shown) of the disk drive apparatus 200 moves the shutter 21 in the direction 21A to open it. When the shutter 21 starts moving in the direction 21A, the engagement pin 47 of the disk holding interlocking member 44 inserted into the guide groove 21m of the shutter 21 is also urged in the direction of the arrow 21A. As a result, the engagement pin 47 moves along the guide groove 11m of the lower cartridge body 11, and at the same time, the disk holding interlocking member 44 starts rotating around the chucking opening portion 11c as indicated by an arrow 44A. It is preferable that the guide groove 11m extends substantially in the moving direction of the shutter 21 in such a manner that the disk holding interlocking member 44 moves in interlocking with the shutter 21.
As shown in fig. 17, when the shutter 21 is in the fully opened state, the plurality of projections 45 provided on the outer periphery of the disk holding interlocking member 44 are positioned below the disk holding member 43. As shown in fig. 18, the disk holding member 43 is pushed upward by the projection 45, and the inclined surface 43' of the disk holding member 43 is separated from the outer periphery of the disk 100. Therefore, the force 43B of pressing the disk 100 against the disk surface in the vertical direction is released, and the disk 100 is opened as it can be rotated. At this time, the eaves 43e located at the front end of the disk holding member 43 extend along the upper side of the outer periphery of the disk 100 on the projection area as the disk 100. Therefore, even in a disk drive apparatus that vertically holds the disk 100, the disk can be prevented from falling off the cartridge when the disk becomes the released state.
According to the disk cartridge 305 of the present embodiment, the disk can be set to the released state without inserting the disk cartridge into the disk drive apparatus 200. For example, if the shutter 21 is opened by hand, the disk holding member 43 opens the disk 100 in conjunction with the operation of the shutter 21. Thus, for example, a disc can be taken out of the cartridge and another disc can be inserted into the cartridge according to the user's intention.
(embodiment 6)
Embodiment 6 of the present invention will be described below. Fig. 19 and 20 are plan views showing the structure of the magnetic disk cartridge 306 according to the present embodiment in which the cartridge upper body is removed and the remaining portion is left, fig. 19 shows a state in which the shutter closes the head opening portion, and fig. 20 shows a state in which the shutter opens the head opening portion. In fig. 19 and 20, the same reference numerals are given to the same components as those of the disk cartridge according to embodiment 1 and embodiment 5.
The disk cartridge of the present embodiment is characterized in that the disk holding interlocking member described in embodiment 5 also serves as a shutter. In fig. 19 and 20, as indicated by an arrow 46B, a shutter 46 is provided on the 1 st inner side surface 11u of the cartridge lower body 11 in such a manner as to be able to rotate around the chucking opening portion 11c of the cartridge lower body 11. The shutter 46 is formed in a fan shape in which a part of a ring having the chucking opening portion 11c as an inner diameter is cut.
The shutter 46 is provided with: and a fitting pin 46p projecting toward the cartridge lower body 11 side (toward the paper surface in fig. 19 and 20). The fitting pin 46p and the guide groove 11m for fitting are provided on the cartridge lower body 11. When the engagement pin 46p is positioned at one end of the guide groove 11m, the head opening 11h is closed by the shutter 46, and when the engagement pin 46p is positioned at the other end of the guide groove 11m, the head opening 11h is opened. The guide groove 11m is provided along a part of an arc concentric with the chucking opening 11 c. The guide groove 11m preferably extends substantially in the disk cartridge insertion direction 1A, as the shutter 46 is opened in accordance with the insertion operation into the disk drive apparatus.
Provided on the outer periphery of the shutter 46 are: and a plurality of projections 46c projecting in the outer peripheral direction and toward the cartridge upper body 12 (in the direction toward the paper in fig. 19 and 20). A non-woven fabric or a coating material for preventing the disc 100 from being scratched or dust from adhering to the signal recording surface is provided on the upper surface of the shutter 46.
In the region of the cartridge lower body 11, a plurality of disk holding members 43 having the same structure as the disk holding members of embodiment 5 are provided at intervals. The disk holding member 43 and the projection 46c provided on the shutter 46 hold or open the disk in conjunction with the operation of the shutter 46 as described in embodiment 5.
If the disk cartridge of the present embodiment is inserted into the disk drive apparatus 200 in the direction indicated by the arrow 1A in fig. 19, the engagement pin 46p of the shutter 46 abuts on the abutting member 201 provided to the disk drive apparatus 200. Also, if the disk cartridge is inserted into the disk drive apparatus 200, the movement is started by engaging the pin 46p with the abutting member 201 and following the guide groove 11 m. Thus, the shutter 46 starts to rotate around the chucking opening portion 11c of the lower case 11 as indicated by an arrow 46B, and the head opening portion is opened as it rotates.
As shown in fig. 20, if the disk cartridge is completely inserted into the disk drive apparatus 200, the fitting pin 46p reaches the other end of the guide groove 11m, and the head opening 11h is completely opened. At this time, as described in embodiment 5, the disk holding portion is pressed toward the cartridge upper body side (paper surface side in fig. 20) by the projection 46c so that the projection 46c is positioned below the disk holding member 43. Therefore, the disk 100 held by the disk holding member 43 is released and becomes freely rotatable.
According to the disk cartridge of the present embodiment, since the disk holding interlocking member is not required, the thickness can be made thinner than the disk cartridge of embodiment 5. Further, by moving the engagement pin 46p along the guide groove 11m by hand, the shutter 46 can be opened, and the disk holding member can be released to take out the disk.
In the present embodiment, the shutter 46 rotates clockwise when viewed from the cartridge upper body side, but the shutter 46 may also rotate counterclockwise by changing the position of the guide groove 11 m.
(7 th embodiment)
Hereinafter, embodiment 7 of the present invention will be described. Fig. 21 and 22 are plan views showing the structure of the remaining portion of the disk cartridge 307 according to the present embodiment after the upper body is removed. Fig. 21 shows a state where the shutter blocks the head opening portion, and fig. 22 shows a state where the shutter opens the head opening portion. In fig. 21 and 22, the same reference numerals are given to the same components as those of the disk cartridge according to embodiment 3 and embodiment 6.
The disk cartridge of this embodiment is different from the disk cartridge of embodiment 6 in the structure of the disk holding member. Specifically, as shown in fig. 21 and 22, the disk cartridge of the present embodiment includes a plurality of disk holding members 17. The disk holding member 17 has an elastic portion 17d, similarly to the disk holding member described in embodiment 3, and holds the disk 100 so as to be pushed down in the disk center direction 17R by the elastic force of the elastic portion 17d when the shutter 46 is closed. In the present embodiment, although the disk holding member 17 is formed integrally with the cartridge lower body 11, it may be formed separately from the cartridge lower body 11.
The disk holding member 17 has a cross-sectional shape in the disk radial direction, which is the same as the disk holding member 43 shown in fig. 18, and has a slope inclined so as to extend above the disk outer periphery as a disk projection area. Thus, the disk is pressed toward the shutter 46 by holding the disk by the disk holding member 17 so that the edges of the disk abut on the inclined surfaces.
The shutter 46 has a plurality of projections 46c on its outer peripheral portion. In the present embodiment, the projection 46c projects in the outer direction thereof, and when the shutter 46 is in the open state, the projection 46c is provided on the outer peripheral portion of the shutter 46 at a position where the projection 46c abuts against the elastic portion 17d of the disk holding member 17.
As shown in fig. 22, if the shutter 46 is in the open state, the protrusion 46c is pressed by its elastic force against the elastic portion 17d in the direction 17s toward the outside of the disc 100. Thus, the disc 100 is liberated. However, the eaves 17e are provided at the front end of the disk holding member 17, and even when the disk 100 is in a state of being released, the eaves 17e protrude toward the disk projection area. Therefore, even if the disk cartridge is inserted into the disk drive apparatus 200 in such a manner that the disk 200 is kept vertical, the disk 100 does not fall off the cartridge.
According to the disk cartridge of the present embodiment, in addition to the features already described in embodiment 6, the disk holding member 17 can be formed integrally with the disk lower body 11. In this case, the disk cartridge structure can be simplified, and in addition, the manufacturing cost can be reduced.
(embodiment 8)
Hereinafter, a disk cartridge 308 according to embodiment 8 of the present invention will be described with reference to the drawings.
First, referring to fig. 23 and 24, a general structure of the disk cartridge 308 will be described. Like embodiment 1, the disc 100 shown in fig. 23 and 24 has the 1 st and 2 nd surfaces. Fig. 23 shows the 1 st side, i.e., the side describing the usual disc label or the like. A signal recording surface 100A as the 2 nd surface of the disc 100 is shown as the back surface in fig. 24.
As shown in fig. 23 and 24, the disk cartridge 308 includes a cartridge upper body 11, a cartridge lower body 12, a pair of shutters 21, 22, and a detachment prevention member 23.
As shown in fig. 24, the cartridge lower body 11 has: a chucking opening 11c opened so that a chucking member such as a spindle motor for rotating the disk 100 from the outside can enter; and a head aperture 11h that is opened so that a head that performs at least one of signal reproduction and signal recording on the signal recording surface 100A of the disk 100 can enter and access the disk. The cartridge lower body 11 is opposed to the signal recording surface 100A of the disc 100. The head opening 11h reaches the side of the lower case 11.
The cartridge upper body 12 is capable of taking in and out the disk 100, and has a circular disk opening 12w that opens the entire projection area of the disk 100 so as to expose the upper surface of the disk. The upper case 12 and the lower case 11 are connected or welded at their outer edges to constitute the main case 10.
The disk storage section 10d for storing the disk 100 is constituted by a 1 st inner surface 11u facing the signal recording surface 100A of the disk 100 of the lower cartridge body 11 and a 2 nd inner surface 12i of a substantially cylindrical shape constituting a disk opening section 12w of the upper cartridge body 12. As described above, the 1 st inner surface 11u serves as the bottom surface of the disk storage portion 10 d.
In the disk housing portion 10d, a space is provided between the 2 nd inner side surface 12i and the disk 100 to such an extent that the disk 100 can be rotated. The upper portion of the disk storage portion 10d is the disk opening 12w, and one surface of the disk 100 held in the disk storage portion 10d is exposed to the outside through the disk opening 12 w.
The drop preventing member 23 is detachably provided on the cartridge upper body 12 so that a part thereof protrudes from the disk opening 12 w. As shown in fig. 23 and 24, the present embodiment is provided with two drop prevention members. On the other hand, the cartridge upper body 12 is provided with a drop preventing portion 12s formed integrally with the cartridge upper body 12 and protruding from the disk opening portion 12 w. The two retaining members 23 and the retaining portions 12s are arranged at substantially equal intervals on the circumference of the disk opening portion 12w, and prevent the disk 100 from falling off the disk opening portion 12 w. In particular, when the disk cartridge is inserted vertically into the drive device and used, the effect of preventing the disk cartridge from coming off is exhibited.
The shutters 21 and 22 are provided between the signal recording surface 100A of the disk 100 and the inner side surface 11u of the disk housing portion 10 d. The shutters 21 and 22 have rotation holes 21u and 22u, respectively, and the rotation holes 21u and 22u are rotatably fitted to a pair of rotation shafts 11s provided in a region other than the disk storage portion 10d of the cartridge main body 10 and on the opposite side of the head opening portion 11h, respectively. Therefore, the shutters 21 and 22 move around the rotation shaft 11s to open or close the chucking opening 11c and the head opening 11h to the outside.
A cam (cam)21c and a follower (follower)22c are provided near the pivot holes 21u and 22u of the shutters 21 and 22, respectively. The cam 21c and the follower 22c have shapes that engage with each other, and constitute an interlocking mechanism 20c that opens and closes the shutters 21 and 22 while interlocking with each other.
The protective layers 21p and 22p can be selected as appropriate from a scratch-resistant nonwoven fabric, a dust-resistant nonwoven fabric, a scratch-resistant coating, and a dust-resistant coating. In the present embodiment, sheets made of dust-proof nonwoven fabric are adhered or ultrasonically welded as the protective layers 21p and 22 p.
The shutters 21 and 22 are biased in the direction in which the shutters 21 and 22 are closed by shutter springs 31 and 32 provided in regions other than the disk storage portion 10 d. Other elastic members than springs may be used to apply force in the direction of closing the shutters 21 and 22.
As shown in fig. 24, the disk cartridge 308 has disk holding portions 21a, 21b, 22a, and 22b at the end portions of the shutters 21 and 22. The disk holding portions 21a, 21b, 22a, 22b have reverse-tapered slopes at the ends of the shutters 21 and 22 to hold the outer periphery of the disk 200 in a state where the shutters 21 and 22 are closed. The structure and operation of the disk holding portions 21a, 21b, 22a, and 22b will be described in detail below.
As shown in fig. 23, a surface 10f for describing a label or the like for writing contents or the like in the stored disc 100 and an arrow-shaped stamp or a concave portion 10a indicating a direction (arrow 1A) of insertion into the drive device of the disc cartridge 308 are provided on the upper surface of the cartridge main body 10 (the cartridge upper body 12). The concave portions 10c provided on the pair of side surfaces parallel to the insertion direction 1A of the cartridge main body 10 can be used as concave portions for engaging and positioning for drawing when the disk cartridge 308 is loaded in the drive apparatus or when the disk cartridge 308 is stored in the changer.
Fig. 25 is a perspective view showing a state where the chucking opening 11c and the head opening 11h are closed to the outside by the shutters 21 and 22 when the cartridge upper body 12 and the disk 100 are not present. In fig. 25, the tray holding portions 21a, 21b, 22a, 22b provided on the shutter 21, 22 are provided in such a manner as to fasten the outer periphery of the tray 100, which is not shown in the drawing.
Fig. 26 is a perspective view showing a state where the shutter 21, 22 opens the chucking opening 11c and the head opening 11h to the outside when the cartridge upper body 12 and the disk 100 are not present. The shutters 21 and 22 rotate about the rotation holes 21u and 22u, thereby opening the chucking opening 11c and the head opening 11h to the outside. Further, the disk holding portions 21a, 21b, 22a, and 22b are rotated about the rotation holes 21u and 22u while the shutters 21 and 22 are moved, and are separated from the outer periphery of the disk 100 not shown in the figure.
Fig. 27 is a perspective view showing a state where the shutters 21 and 22 close the chucking opening 11c and the head opening 11h to the outside when the disk 100 is not present. As shown in fig. 27, the disk holding members 21a, 21b, 22a, and 22b protrude from the disk storage section 10d, and hold the disk 100 not shown. On the other hand, fig. 28 is a perspective view showing a state where the shutter 21, 22 opens the chucking opening 11c and the head opening 11h to the outside when the disk 100 is not present. As shown in fig. 28, when the shutters 21 and 22 are in the open state, the disk holding portions 21a, 21b, 22a, and 22b are housed in the area other than the disk holding portion 10d of the cartridge main body.
Next, the configuration and operation of the shutters 21 and 22 will be described in more detail with reference to fig. 29, 30, and 31. Fig. 29 is a sectional view of the center of the communication tray 100. As shown in fig. 29, a notch 10w that does not interfere with the shutter 22(21) that performs the opening and closing operation is provided in the 2 nd inner surface 12i of the disk storage portion 10d in the cartridge main body 10, and a shutter storage portion 10s that stores a part of the shutter 22(21) in the open state is provided in the cartridge main body 10. As shown in fig. 29, at the time of shutter closing, at least the edge portions 21f and 22f which are in close contact with the head opening 11h and the chucking opening 11c among the edge portions of the shutters 21 and 22 in close contact with each other overlap the disk 100 in the thickness direction.
On the other hand, as shown in fig. 30, the disk holding portions 21a, 21b, 22a, and 22b have a shape having inclined surfaces 21a '(21 b', 22a ', and 22 b') inclined so as to extend to the outer periphery of the disk 100 in the disk projection area. That is, the inclined surface 21 a' has an inverted cone shape and is inclined toward the disc 100. When the shutters 21 and 22 close the chucking opening 11c and the head opening 11h, the inclined surface 21 a' abuts on the rib 100c of the disk 100, and the disk 100 is held and pressed in the thickness direction, so that the signal recording surface is brought into surface contact with the sheets 21p and 22p of the shutters 21 and 22, and the disk 100 is held and fixed to the cartridge body 10. In this state, since the signal recording surface 100A of the disk 100 is in close contact with the sheets 21p and 22p, dust can be prevented from adhering to the signal recording surface 100A.
Further, by forcibly rotating one side of the disk 100 exposed from the outside or forcibly opening and closing the shutters 21 and 22, dirt such as dust and fingerprints attached to the signal recording surface 100A of the disk 100 can be wiped off.
As shown in fig. 31, the shutter 21 is integrally formed with a shutter opening/closing operation portion 21t for opening and closing the shutter from the outside, an elastic portion 21v, and a lock protrusion 21k interposed between these two portions. As shown in fig. 31, in a state where the shutter 21 blocks the chucking opening 11c and the head opening 11h, the locking protrusion 21k which is pushed up by the elastic portion 21v is fitted into the locking hole 10k formed in the cartridge main body 10, and the cartridge main body 10 is fixed and supported so as not to rotate the shutter 21. If the shutter 21 is fixed, the shutter 22 connected by the interlocking mechanism 20c is also fixed.
Therefore, the shutter 21 and 22 can be rotated to open the chucking opening 11c and the head opening 11h to the outside and the disk 100 can be released from being held by the disk holding portions 21a, 21B, 22a, and 22B only by pressing the opening/closing operation portion 21t in the arrow 20B direction while the lock protrusion 21k is pressed in the arrow 20A direction by a protrusion or the like from the outside to release the engagement with the lock hole 10 k. As described above, the disc can be prevented from being easily taken out by the operator.
The structure and operation of the detachment prevention member 23 will be described in detail with reference to fig. 24 and 32. Fig. 32 is a perspective view of the detachable drop prevention member 23 viewed obliquely in the vertical direction. The drop preventing member 23 is detachably attached by fitting the convex portions 23a, 23b, and 23c thereof into the concave portions 12a, 12b, and 12c provided in the vicinity of the case opening 12w of the case upper body 12 as shown in fig. 24.
Further, a mechanism for preventing the disk cartridge 308 from being erroneously inserted into the drive apparatus will be described in more detail with reference to fig. 33. Fig. 33 is a front view as viewed from the insertion direction (arrow 1B) of the disk cartridge 308 toward the drive apparatus in fig. 23. As shown in fig. 33, the cartridge body 10 is formed with a recess 10g at a position deviated from the thickness center on one side surface thereof, and is asymmetrical with respect to the insertion direction 1A (fig. 23) of the driving device.
With this configuration, only when the convex portion provided in the drive unit is fitted into the concave portion 10g, the disk cartridge can be correctly inserted into the drive unit, and the drive unit operates normally.
On the other hand, when the disk cartridge 308 is inserted into the drive apparatus in the wrong vertical direction, the convex portion provided in the drive apparatus interferes with the side surface on the side where the concave portion 10g is not provided, and the cartridge 308 cannot be inserted into the drive apparatus. Further, even in the case of erroneous insertion in the directions of simultaneously reversing the front-back direction and the up-down direction, the convex portion provided to the driving device interferes with the portion of the side surface where the concave portion 10g is provided, where there is no concave portion, and insertion is still impossible. This can prevent erroneous insertion.
The disk cartridge described in this embodiment can be variously modified.
For example, when the shutters 21 and 22 are closed, the drop preventing member 23 is not protruded from the upper surface 12f (fig. 24) of the cartridge upper body 12, and the thickness of the cartridge main body 10 is further reduced. When the shutters 21 and 22 are in the opened state, in conjunction with the opening operation of the shutters 21 and 22, for example, when the disk holding portions 21a and 22a pass below the drop-off preventing member 23, the protruding portion 23a of the drop-off preventing member 23 is pressed from below, and the drop-off preventing member 23 protrudes from the upper surface 12f of the cartridge upper body 12. With this configuration, when the disk 100 rotates in the disk storage section 10d, the thickness of the disk cartridge can be further reduced while sufficiently securing a necessary space.
Further, the drop preventing member 23 is formed integrally with the cartridge main body 10 and has a foldable structure, and the drop preventing member 23 may be provided as a removable type.
In addition, the shutter springs 31, 32 may also apply force in a direction in which the shutters 21, 22 are opened. Either the shutter 21 or 22 may be provided if the movement of the shutters by the interlocking mechanism is definite.
Although the lock projection 21k is formed on the shutter 21, a lock projection and a projection may be provided at the tip of an elastic portion of a lock lever formed on the cartridge main body 10, and the shutter may be opened by releasing the engagement between the projection and a recess provided on the shutter by pressing the lock projection from a lock hole provided on the cartridge main body. In this case, the lock lever may be formed of a resin spring integrally molded with the cartridge main body 10 together with the shutter spring (elastic member).
(embodiment 9)
Hereinafter, a disk cartridge 309 according to embodiment 9 of the present invention will be described with reference to the drawings.
As shown in fig. 34 and 35, the disk cartridge 309 includes a cartridge lower body 41, a cartridge upper body 42, anti-drop members 42a, 42b, 42c, 42d, and a pair of shutter 51 and 52.
As shown in fig. 35, the cartridge lower body 41 has: a chucking opening 41c opened so that a chucking member such as a spindle motor for rotating the disk 100 from the outside can enter, and a head opening 41h opened so that at least one of the heads for reproducing and recording signals is accessible to the signal recording surface 100A of the disk 100. The cartridge lower body 41 opposes the signal recording 100A of the disc 100. Further, the head opening 41h reaches the side of the cartridge lower body 41.
The cartridge upper body 42 is configured to take in and out the disc 100, and has a circular disc opening 42w having a full projection area for opening the disc 100 so as to expose the upper surface of the magnetic disc. The upper case 42 and the lower case 41 are connected or welded at their outer peripheral portions to constitute the case main body 40.
The disk storage portion 40d for storing the disk 100 is constituted by a 1 st inner surface 41u facing the signal recording surface 100A of the disk 100 of the cartridge lower body 41 and a 2 nd inner surface 42i of a substantially cylindrical shape constituting the disk opening portion 42w of the cartridge upper body 42. Thus, the 1 st inner surface 41u serves as a bottom of the disk storage portion 40 d.
In the disk housing portion 40d, a space to the extent that the disk 100 can be rotated is provided between the 2 nd inner side surface 42i and the disk 100. The upper portion of the disk storage portion 40d is the disk opening 42w, and one surface of the disk 100 held in the disk storage portion 40d is exposed to the outside through the disk opening 42 w.
The drop preventing members 42a, 42b, 42c, and 42d are divided by slits (slit) from the cartridge upper body 42 so that a part thereof protrudes from the disk opening 42w, and are provided integrally with the cartridge upper body 42. The fall- off prevention members 42a, 42b, 42c, 42d prevent the disk 100 from falling off the disk opening 42 w. In particular, when the disk cartridge is inserted vertically into the drive device and used, the effect of preventing the disk cartridge from coming off is exhibited. The drop prevention members 42a, 42b, 42c, and 42d may be formed integrally with the case upper body 42 via elastic members.
The shutters 51 and 52 are provided between the signal recording surface 100A of the disk 100 and the inner surface 41u of the disk storage portion 40 d. The shutters 51 and 52 have rotation holes 51u and 52u, respectively, and the rotation holes 51u and 52u are rotatably fitted to a pair of rotation shafts 41s provided in a region other than the disk storage portion 40d of the cartridge main body 40 and on the opposite side to the head opening portion 41h, respectively. Therefore, the shutters 51 and 52 move around the rotation shaft 41s to open or close the chucking opening 41c and the head opening 41h to the outside.
A cam 51c and a follower 52c are provided near the rotation holes 51u and 52u of the shutters 51 and 52, respectively. The cam 51c and the follower 52c have shapes that engage with each other, and constitute an interlocking mechanism 50c that opens and closes the shutters 51 and 52 while interlocking with each other.
The protective layers 51p and 52p can be selected as appropriate from a scratch-resistant nonwoven fabric, a dust-resistant nonwoven fabric, a scratch-resistant coating, and a dust-resistant coating. In the present embodiment, sheets made of dust-proof nonwoven fabric are adhered or ultrasonically welded as the protective layers 51p and 52 p.
The shutters 51 and 52 are biased in the direction in which the shutters 51 and 52 close by shutter springs 61 and 62 provided in regions other than the disk storage portion 40d, respectively. The shutter springs 61, 62 may also apply force in a direction in which the shutters 51, 52 are opened. Further, if the movement between the shutters is determined by the interlocking mechanism, only either one of the shutter springs 61, 62 may be provided.
As shown in fig. 35, disk holding portions 51a, 51b, 52a, 52b are provided on the end portions of the shutters 51 and 52, as in embodiment 8. As described in detail below, the projections 51e and 52e are provided in regions corresponding to the center holes of the disk 100 of the shutters 51 and 52.
As shown in fig. 34, an arrow-shaped stamp or recess 40a indicating the direction (arrow 1A) in which the disk cartridge 309 is inserted into the drive device is provided on the upper surface of the cartridge main body 40 (cartridge upper body 42). Further, recesses 40c are provided on a pair of side surfaces of the cartridge main body 40 parallel to the insertion direction 1A, respectively. The concave portion 40c can be used as a concave portion for drawing engagement or positioning when the disk cartridge 309 is loaded in the drive apparatus or when the disk cartridge 309 is stored in the changer. Further, if the recess 40c is provided only on one side surface of the cartridge 309, it also becomes a front-back erroneous insertion prevention mechanism when the disk cartridge 309 is inserted or loaded into the drive apparatus. A handle 40e for an operator to hold the cassette 309 is provided on the upper surface of the cassette main body 40. The grip 40e is provided with a concave-convex shape for preventing slipping.
Fig. 36 is a perspective view showing a state where the chucking opening 41c and the head opening 41h are closed to the outside by the shutters 51 and 52 when the disk 100 is not present. Fig. 37 is a perspective view showing a state where the shutters 51 and 52 open the chucking opening 41c and the head opening 41h to the outside when the disk 100 is not present.
The structure and operation of the shutters 51 and 52 will be described in more detail below. As shown in fig. 34 and 35, the disk holding portions 51a, 51b, 52a, and 52b provided in the shutters 51 and 52 have a shape of a slope inclined so as to extend to the outer periphery of the disk 100 in the disk projection area, as in the case of embodiment 8. I.e., the inclined surface has an inverted cone shape, inclined toward the disc 100. This produces the same effects as those of embodiment 8.
Further, an opening/closing operation portion 52t for opening and closing the shutter 52 from the outside is integrally formed with the shutter 51 by an elastic portion 51v and a lock projection portion 51k formed via the elastic portion 51 v. Accordingly, in a state where the shutter 51, 52 blocks the chucking opening 41c and the head opening 41h, the lock projection 51k which is pushed up by the elastic portion 51v is fitted into the lock hole 40k formed in the cartridge main body 40, and the cartridge main body 40 is fixedly supported so as not to rotate the shutter 51. If the shutter 51 is fixed, the shutter 52 connected by the interlocking mechanism 50c is also fixed.
Accordingly, as shown in fig. 36, the disk 100 can be released from the disk holding portions 51a, 51B, 52a, and 52B by simply pressing the lock protrusion 51k in the direction of arrow 50A from the outside with a protrusion or the like to release the engagement with the lock hole 40k and simultaneously pressing the opening/closing operation portion 51t in the direction of arrow 50B to rotate the shutters 51 and 52 and open the chucking opening portion 41c and the head opening portion 41h to the outside. As described above, the disc can be prevented from being easily taken out by the operator.
Further, unlike the embodiment 8, the locking protrusion 51k and the opening/closing operation portion 52t provided to the shutters 51 and 52 are provided to the different shutters 51 and 52, respectively. This structure is effective particularly for a disk cartridge having a small diameter. However, in the case of the magnetic disk cartridge for the small-diameter disk, since the cartridge as a whole and the shutter become small, it is difficult in design to form the locking protrusion and the opening/closing operation portion in one shutter. Further, even if the locking protrusion and the opening/closing operation portion can be formed in one shutter, the interval between the shutter opening/closing mechanism and the lock release mechanism provided on the driving device side becomes very narrow, or both mechanisms need to be provided in a small space, and thus it is difficult to design the driving device.
Although the lock projection 51k is formed on the shutter 51, the shutter can be opened by providing the lock projection and the projection at the tip of the elastic portion of the lock lever formed on the cartridge main body 40, and pressing the lock projection from the lock hole provided in the cartridge main body to remove the fit between the projection and the recess provided in the shutter. In this case, the lock lever may be formed of a resin spring integrally molded with the cartridge main body 40 together with the shutter spring (elastic member).
Next, the operation of the convex portions 51e and 52e provided on the shutters 51 and 52 will be described. Fig. 38 is a sectional view through the center of the disc 100 near the center of the disc. As shown in fig. 38, when the shutters 51 and 52 are closed, the projections 51e and 52e protrude into the center hole 100h, and the disk 100 is in surface contact with the shutters 51 and 52.
As shown in fig. 39, when the shutters 51 and 52 are switched to the open state, the projections 51e and 52e are inserted from the center hole 100h into the lower surface of the disk 100, and the disk 100 is lifted up to release the surface contact between the shutters 51 and 52 and the disk 100. This prevents the shutters 51 and 52 from scratching the signal recording surface 100A during opening and closing operations of the shutters 51 and 52. Since the moving areas of the projections 51e and 52e for opening and closing the shutters 51 and 52 are on the inner peripheral side of the signal recording area of the signal recording surface 100A, the projections 51e and 52e are not connected to the signal recording area, and no flaw is generated in the signal recording area.
Next, the structure and operation of the drop prevention member will be described in more detail with reference to fig. 40 and 41. Fig. 40 is a cross-sectional view of the vicinity of the disk outer periphery passing through the center of the disk 100, and a projection 42c '(42 a', 42b ', 42 d') is formed on the rear surface of the drop prevention member 42c (42a, 42b, 42 d). As shown in fig. 40, in a state where the shutters 51 and 52 are closed, the drop preventing member 42c is substantially parallel to the disk 100 and is accommodated in the thickness of the disk cartridge 309. The appearance of the disk cartridge 309 in this state is shown in fig. 36.
As shown in fig. 41, in a state where the shutters 51 and 52 are opened, the inclined portions 52f, 51d, and 52d formed in the shutters 51 and 52 abut against the convex portions 42a ', 42 b', 42c ', and 42 d', respectively, and the drop-off preventing members 42a, 42b, 42c, and 42d are pressed above the tray 100. The appearance of the disk cartridge 309 in this state is shown in fig. 37. With this configuration, the disk 100 can be prevented from falling off the disk cartridge 309 particularly during a period from when the disk cartridge 309 is vertically inserted into the disk drive apparatus until the disk 100 is locked. On the other hand, when the disc 100 is locked, the space in which the disc 100 can move can be enlarged. Further, according to this structure, the cartridge main body can be further thinned.
In order to temporarily maintain the opened state of the shutter in the state where the shutter 51, 52 is opened, the inclined portion 51c (52f, 51f, 52d) may be provided with a convex portion or a concave portion for engaging the convex portion 42a '(42 b', 42c ', 42 d').
(embodiment 10)
Hereinafter, a disk cartridge 301 according to embodiment 10 of the present invention will be described with reference to the drawings. The main feature of the disk cartridge 310 of this embodiment is that the drop-off preventing member is provided on the shutter.
As shown in fig. 42 and 43, the disk cartridge 310 includes: a lower cartridge body 71, an upper cartridge body 72, anti-drop members 81d, 81f, 82d, and a pair of shutters 81 and 82.
As shown in fig. 43, the cartridge lower body 71 has: a chucking opening 71c opened so that a chucking member such as a spindle motor for rotating the disk 100 from the outside can enter, and a head opening 71h opened so that at least one of the heads for reproducing and recording signals is accessible to the signal recording surface 100A of the disk 100. The cartridge lower body 71 is opposed to the signal recording surface 100A of the disk 100. Further, the head opening portion 71h reaches the side of the cartridge lower body 71.
The cartridge upper body 72 is configured to take in and out the disk 100, and has a circular disk opening 72w that opens the entire projection area of the disk 100 so as to expose the upper surface of the magnetic disk. The upper case 72 and the lower case 71 are connected or welded at their outer peripheral portions to constitute a case main body 70.
The disk storage portion 70d for storing the disk 100 is constituted by a 1 st inner surface 71u of the cartridge lower body 71 facing the signal recording surface 100A of the disk 100 and a 2 nd inner surface 72i of a substantially cylindrical shape constituting a disk opening portion 72w of the cartridge upper body 72. Thus, the 1 st inner surface 71u serves as a bottom surface of the disk storage portion 70 d.
In the disk housing portion 70d, a space to the extent that the disk 100 can be rotated is provided between the 2 nd inner side surface 72i and the disk 100. The upper portion of the disk storage portion 70d is a disk opening 72w, and one surface of the disk 100 held in the disk storage portion 70d is exposed to the outside through the disk opening 72 w.
The shutters 81 and 82 are provided between the signal recording surface 100A of the disc 100 and the inner side surface 71u of the disc housing portion 70 d. The shutters 81 and 82 have rotation holes 81u and 82u, respectively, and the rotation holes 81u and 82u are rotatably fitted to a pair of rotation shafts 71s provided in a region other than the disk storage portion 70d of the cartridge main body 10 and on the opposite side of the head opening portion 71h, respectively. Therefore, the shutters 81 and 82 move around the rotation shaft 71s to open or close the chucking opening 71c and the head opening 71h to the outside.
A cam 81c and a follower 82c are provided near the rotation holes 81u and 82u of the shutters 81 and 82, respectively. The cam 81c and the follower 82c have shapes that engage with each other, and constitute an interlocking mechanism 80c that opens and closes the shutters 81 and 82 while interlocking with each other.
The protective layers 81p and 82p can be selected as appropriate from a scratch-resistant nonwoven fabric, a dust-resistant nonwoven fabric, a scratch-resistant coating, and a dust-resistant coating. In the present embodiment, sheets made of dust-proof nonwoven fabric are adhered or ultrasonically welded as the protective layers 81p and 82 p.
The shutters 81 and 82 are biased in the direction in which the shutters 81 and 82 close by shutter springs 91 and 92 provided in regions other than the disk storage portion 70 d. The shutter springs 91 and 92 may also apply force in the direction in which the shutters 81 and 82 open. Further, if the movement between the shutters is determined by the interlocking mechanism, only either one of the shutters 91 and 92 may be set.
As shown in fig. 43, disk holding portions 81a, 81b, 82a, 82b are provided at the ends of the shutters 81 and 82, as in embodiment 8. The projections 81e and 82e are also provided on the shutters 81 and 82.
As described in detail below, the drop preventing members 81f, 81d, and 82d are formed integrally with the shutters 81 and 82 in the vicinity of the disk holding portions 81a, 81b, and 82b of the shutters 81 and 82, respectively. The drop preventing members 81f, 81d, and 82d may be formed integrally with the shutters 81 and 82 via elastic members.
As shown in fig. 42, an arrow-shaped stamp or recess 70a indicating the direction (arrow 1A) in which the disk cartridge 310 is inserted into the drive device is provided on the upper surface of the cartridge main body 70 (cartridge upper body 72). Further, recesses 70c are provided on a pair of side surfaces of the cartridge main body 70 parallel to the insertion direction 1A, respectively. The concave portion 70c can be used as a concave portion for engaging or positioning for drawing when the disk cartridge 310 is loaded in the drive apparatus or when the disk cartridge 310 is stored in the changer. Further, if the recess 70c is provided only on one side surface of the cartridge 310, it also becomes a mechanism for preventing erroneous insertion of the front and back sides when the disk cartridge 310 is inserted or loaded into the drive apparatus. A handle portion 70e for an operator to hold the cassette 310 is provided on the upper surface of the cassette main body 70. The grip 70e is provided with a concave-convex shape for anti-slip.
Fig. 44 is a perspective view showing a state where the shutters 81 and 82 block the chucking opening 71c and the head opening 71h to the outside in the case where the disk 100 is not present. Fig. 45 is a perspective view showing a state where the shutters 81 and 82 open the chucking opening 71c and the head opening 71h to the outside in the absence of the disk 100.
The structure and operation of the shutters 81 and 82 will be described in detail below. As shown in fig. 42 and 43, the disk holding portions 81a, 81b, 82a, and 82b provided on the shutters 81 and 82 have a shape of a slope inclined so as to extend to the outer periphery of the disk 100 on the disk projection area, as in embodiment 8. I.e., the inclined surface has an inverted cone shape, inclined toward the disc 100. This produces the same effects as those of embodiment 8.
Further, the shutter 82 is integrally formed with an opening/closing operation portion 82t and an elastic portion 82v for opening and closing the shutter from the outside, and a lock projection portion 82k formed by these. Thus, in a state where the shutters 81 and 82 block the chucking opening portion 71c and the head opening portion 71h, the locking protrusion 82k to which a force is applied by the elastic portion 82v is fitted into a locking hole 70k (fig. 44) formed in the cartridge main body 70, and the cartridge main body 70 is fixedly supported so as not to rotate the shutter 82. If the shutter 82 is fixed, the shutter 81 connected by the interlocking mechanism 80c is also fixed.
Therefore, as shown in fig. 44, by simply pressing the opening/closing operation portion 82t in the arrow 70B direction while pushing the lock projection 821k in the arrow 70A direction by a projection or the like from the outside and removing the fitting with the lock hole 70k, the shutters 81 and 82 are rotated to open the chucking opening portion 71c and the head opening portion 71h to the outside, and the disk 100 can be released from being held by the disk holding portions 81a, 81B, 82a, and 82B. As described above, the disc can be prevented from being easily taken out by the operator.
Although the locking projection 82k is formed on the shutter 82, a locking projection and a projection may be provided at the tip of an elastic portion passing through a locking lever formed on the cartridge main body 70, and the fitting between the projection and a recess provided on the shutter may be released by pressing the locking projection through a locking hole provided on the cartridge main body, so that the shutter can be opened freely rotatably. In this case, the lock lever may be formed of a resin spring integrally molded with the cartridge main body 70 together with the shutter spring (elastic member).
Next, the structure and operation of the drop prevention members 81f, 81d, and 82d will be described in more detail. As shown in fig. 46 and 48, when the shutters 81 and 82 are closed, the drop-off preventing members 81f, 81d, and 82d are substantially parallel to the disk 100, and the drop-off preventing members 81f, 81d, and 82d do not protrude from the upper surface of the disk cartridge 310. The appearance of the disk cartridge 310 in this state is shown in fig. 44.
As shown in fig. 47 and 49, when the shutters 81 and 82 are switched to the open state, the drop- off prevention members 81f, 81d, and 82d are guided by the inclined portion slit 70s provided in the inner upper wall of the cartridge 70 and the inclined portion 72s provided in the inner upper wall, respectively, and pushed up toward the upper side of the tray 100. Further, when the drop prevention members 81f, 81d, and 82d are pushed up on the cartridge upper body 72, the cutout portions 72a, 72b, and 72c are provided in the cartridge upper body 72 so as not to interfere with the cartridge upper body 72. The appearance of the disk cartridge 310 in this state is shown in fig. 45.
In the state where the shutters 81 and 82 are closed, since the drop preventing members 81f, 81d, and 82d are positioned above the disk 100 in the projection area of the disk 100, the disk 100 may be pressed against the shutters 81 and 82 in the thickness direction, and the disk holding portions 81a, 81b, 82a, and 82b of the shutters 81 and 82 may be removed as a configuration for holding the magnetic disk 100.
According to this configuration, the disk 100 can be prevented from falling off the disk cartridge 310 particularly during the period from the time when the disk cartridge 310 is inserted vertically into the disk drive apparatus to the time when the disk 100 is chucked. On the other hand, when the disc 100 is locked, the space in which the disc 100 can operate can be enlarged. Further, according to this structure, the cartridge main body can be further thinned.
(embodiment 11)
Hereinafter, a disk cartridge 311 according to embodiment 11 of the present invention will be described with reference to the drawings.
As shown in fig. 50 and 51, the disk cartridge 311 includes a cartridge lower body 11, a cartridge upper body 12, a pair of shutters 21, 22, and a drop-off preventing member 23. These constituent elements and functions are the same as those described in embodiment 8, as shown in fig. 52 to 56, and therefore detailed description is omitted.
As shown in fig. 50 and 51, the disk cartridge 311 of the present embodiment is different from the disk cartridge 308 of embodiment 8 in that holes 20h are provided in the shutters 21 and 22.
Specifically, in a state where the shutter 21, 22 of the disk cartridge 333 has been blocked, the hole 20h is provided on the area of the shutter 21, 22 corresponding to the center hole 100h of the disk 100. The hole 20h is formed by notches 21h and 22h provided in the shutters 21 and 22, respectively.
According to this configuration, as shown in fig. 50, when the disk 100 is placed on the disk cartridge 311 with the top surface thereof facing upward, dust entering from the center hole 100h passes through the holes 20h provided in the shutters 21 and 22, and leaks to the outside without remaining in the disk cartridge 311. I.e. dust is not deposited on the shutters 21, 22. Therefore, in the state where the shutters 21 and 22 are opened, that is, in the drive-mounted state, dust can be prevented from adhering to the signal recording surface side 100A of the disk.
Considering that the disk cartridge 311 may face upward toward the surface (the state shown in fig. 5) and may also face downward toward the back (the state in which the lower body of the cartridge is located upward), it is preferable to make the hole 20h have substantially the same diameter as the center hole 100 h. By satisfying such a relationship, dust can be prevented from adhering to the shutters 21, 22 in the case where the disk cartridge 311 is placed in the front-side orientation, and dust can be prevented from directly adhering to the signal recording surface side 100A of the disk 100 in the case where the disk cartridge 311 is placed in the rear-side orientation.
Further, the disk cartridge 311 is different from the disk cartridge 308 of embodiment 8 in that an opening/closing operation portion for opening and closing the shutter 21, 22 is provided on the shutter 22. Specifically, as shown in fig. 51 and 57, the opening/closing operation portion 22t, the elastic portion 22v, and the lock projection 22k formed by these portions are formed integrally with the shutter 22. Therefore, unlike embodiment 8, the opening/closing operation portion 22t is positioned on the right side of the head opening 21h when viewed from the disk 100 side. The function and operation of the opening/closing operation section 22t are the same as those of the disk cartridge 308 of embodiment 8.
(embodiment 12)
Hereinafter, a disk cartridge 312 according to embodiment 12 of the present invention will be described with reference to the drawings.
The disk cartridge 312 is different from the disk cartridge 311 of embodiment 11 in that a protruding member 12t is provided on the inner side surface 12i of the disk storage section 10d and a protruding portion 20w is provided around the hole 20h of the shutter 21, 22. These features will be explained below.
As shown in fig. 58, the male member 12t is formed in almost all of the outer peripheral portion of the disk storage portion 10d by extending from the inner side surface 12i of the cartridge upper body 12 in the inner peripheral direction of the disk 100. Fig. 59 shows a cross section of the disk cartridge 312 when the disk 100 is accommodated in the disk accommodating section 10 d. As shown in fig. 59, when the shutters 21 and 22 are in the closed state, the outer peripheral portion of the signal recording surface 100A of the disc 100 abuts on the convex member 12 t. This can fill the gap between the outer peripheral portion of the disk 100 and the cartridge main body, thereby preventing dust from entering the signal recording surface 100A.
A gap 10w is provided between the male part 12t of the cartridge main body 10 and the cartridge lower body 11. When the shutter 21, 22 is opened, as shown in fig. 60, 61, a part of the shutter 21, 22 enters the space 10w, preventing the cartridge main body 10 and the shutter 21, 22 from interfering with each other.
As shown in fig. 59, in this structure, when the shutter 21, 22 is closed, a gap 10z communicating with the outside is generated between the disc 100 and the shutter 21, 22. To fill the gap, projections 21w and 22w are provided on the shutters 21 and 22 in the vicinity of the disk center hole 100 h. As shown in fig. 58, when the shutters 21 and 22 are closed, the projections 21w and 22w are in close contact with each other, and the projection 20w is formed around the entire periphery of the closing disk center hole 100 h. Therefore, dust can be prevented from entering the signal recording surface 100A from the vicinity of the disk center hole 100 h.
The leading ends of the protruding portions 21w, 22w may contact the signal recording surface 100A of the disc 100. Accordingly, it is preferable to round the ridges of the projections 21w and 22w to prevent scratches on the disk. Further, the projections 21w, 22w may be formed integrally with the shutters 21, 22, respectively. In this case, it is preferable to form a non-woven fabric for preventing a disc from being scratched or to form a coating layer for preventing a disc from being scratched by adhesion or ultrasonic welding on the portion of the convex portion 20w abutting on the disc 100. The projections 21w and 22w themselves may be formed of a non-woven fabric for preventing a disc from being scratched or a coating layer for preventing a disc from being scratched, or may be directly ultrasonically welded or fixed to the shutters 21 and 22.
Further, as shown in fig. 59, in the state where the shutters 21 and 22 are closed, the disk 100 is held by the shutters 21 and 22 by the convex portion 20w and the convex member 12t in a state where only the gap 10z is floated from the shutters 21 and 22. That is, most of the signal recording surface 100A of the disc 100 has no surface contact with the shutter 21 and 22. Therefore, even when the valves 21 and 22 are not subjected to a process of attaching a non-woven fabric for preventing scratches, etc., the signal recording surface 100A can be effectively prevented from scratches.
Fig. 62 and 63 show a disk cartridge having convex portions 21w 'and 22 w' enlarged in the outer circumferential direction of the disk 100, fig. 62 shows a state where the shutters 21 and 22 are closed, and fig. 63 shows a state where the shutters 21 and 22 are opened.
As shown in fig. 62 and 63, the convex portions 21w 'and 22 w' are preferably provided closer to the center of the disk storage portion than the convex member 12t provided in the disk storage portion 10d in a state where the shutters 21 and 22 are opened. Therefore, the convex portions 21w 'and 22 w' can be prevented from contacting or interfering with the convex member 12 t.
The projections 21w 'and 22 w' may be formed integrally with the shutters 21 and 22, respectively. In this case, it is preferable that a non-woven fabric for preventing scratches of the disc is adhered or ultrasonically welded or a coating for preventing scratches is formed on the portion abutting against the disc 100 of the convex portions 21w 'and 22 w'. The projections 21w 'and 22 w' themselves may be formed of a non-woven fabric for preventing a disc from being scratched or a coating for preventing a disc from being scratched, and may be directly ultrasonically welded or fixed to the shutters 21 and 22.
(embodiment 13)
Hereinafter, a disk cartridge 313 according to embodiment 13 of the present invention will be described with reference to the drawings.
First, the general structure of the disk cartridge 313 will be described with reference to fig. 64 and 65. Like the embodiment 8, the disc 100 shown in fig. 64 and 65 has the 1 st and 2 nd surfaces. Fig. 64 shows the 1 st side, a side describing a general disc label or the like. A signal recording surface 100A as the 2 nd surface of the disc 100 is shown as the back surface in fig. 65.
As shown in fig. 64 and 65, the disk cartridge 313 includes: a lower case body 11, an upper case body 12, a pair of shutters 21, 22, and a drop-off preventive member 23.
As shown in fig. 65, the cartridge lower body 11 has: a chucking opening 11c opened so that a chucking member such as a spindle motor for rotating the disk 100 from the outside can enter, and a head opening 11h opened so that at least one of the heads for reproducing and recording signals is accessible to the signal recording surface 100A of the disk 100. The cartridge lower body 11 is opposed to the signal recording surface 100A of the disc 100. The case lower body 11 is formed by molding synthetic resin.
The head opening 11 reaches the side of the lower body 11, and the lower body 11 has a bridge 11b connected to the head opening 11h in order to prevent the rigidity of the lower body 11 from being weakened by the head opening 11 h. Further, at the back of the cartridge lower body 11, two positioning holes 11w for inserting cartridge positioning pins on the driving device side are provided.
The cartridge upper body 12 is configured to take in and out the disk 100, and has a circular disk opening 12w for opening the entire projection area of the disk 100 so as to expose the upper surface of the disk. The upper case 12 and the lower case 11 are connected or welded at their outer edges to constitute the main case 10. The cartridge upper body 12 is also formed of synthetic resin.
The disk storage section 10d for storing the disk 100 is constituted by a 1 st inner surface 11u of the lower case 11 facing the signal recording surface 100A of the disk 100 and a 2 nd inner surface 12i of a substantially cylindrical shape constituting a disk opening section 12w of the upper case 12. Therefore, the 1 st inner surface 11u serves as a bottom of the disk storage portion 10 d.
In the disk housing portion 10d, a space is provided between the 2 nd inner side surface 12i and the disk 100 to such an extent that the disk 100 can be rotated. The upper portion of the disk storage portion 10d is a disk opening 12w, and the disk 100 in the disk storage portion 10d is held with one surface exposed to the outside from the disk opening 12 w.
The drop preventing member 23 is detachably provided on the cartridge upper body 12 so that a part thereof protrudes from the disk opening 12 w. As shown in fig. 64 and 65, in the present embodiment, two drop prevention members 23 are provided. On the other hand, the cartridge upper body 12 is provided with a drop preventing portion 12s formed integrally with the cartridge upper body 12 and protruding from the disk opening portion 12 w. The two retaining members 23 and the retaining portions 12s are arranged at substantially equal intervals on the circumference of the disk opening 12w, and can prevent the disk 100 from falling off the disk opening 12 w. Further, two convex disk butting portions 12 s' are provided at a part of the drop preventing portion 12 s. The height of the tray butting portion 12 s' is the same as the height of the tray butting portion 23a of the drop prevention member 23 in view of the tray 100.
According to this configuration, even when the disk cartridge 313 is used in a state of being vertical or reversed, the posture of the disk 100 can be secured stably. Therefore, the disk cartridge 313 can be prevented from coming off particularly when used by being inserted into the drive apparatus in a vertical or reverse direction. The drop preventing member 23 may not be attached to the detachable cartridge body 10. The drop preventing member 23 may be fixed to the cartridge upper body 12 to such an extent that the disk 100 can be taken out of the cartridge main body 10 and to such an extent that the disk housing portion 10d can be rotated or lifted.
The shutters 21 and 22 are provided on the same plane between the signal recording surface 100A of the disk 100 and the inner side surface 11u of the disk housing portion 10 d. The shutters 21 and 22 have pivot holes 21u and 22u, respectively, and are provided on a pair of pivot shafts 11s on the opposite side of the magnetic head opening in the region other than the disk storage portion 10d of the cartridge main body 10, and the pivot holes 21u and 22u are rotatably fitted, respectively. Therefore, the shutters 21 and 22 can move around the rotation axis 11s to open or close the chucking opening 11c and the head opening 11h to the outside. The shutters 21 and 22 may also be formed of synthetic resin.
An annular portion 21c and a pin-shaped portion 22c are provided near the rotation holes 21u and 22u of the shutters 21 and 22, respectively. The annular portion 21c and the pin portion 22c have shapes that engage with each other, and constitute an interlocking mechanism 20c that opens and closes the shutters 21 and 22 while interacting with each other. The interlocking mechanism 20c may be constituted by a cam mechanism or another mechanism capable of interlocking operation such as a gear mechanism.
The protective layers 21p and 22p can be selected as appropriate from a scratch-resistant nonwoven fabric, a dust-resistant nonwoven fabric, a scratch-resistant coating, and a dust-resistant coating. In the present embodiment, sheets made of dust-proof nonwoven fabric are adhered or ultrasonically welded as the protective layers 21p and 22 p.
A locking protrusion 21k provided on the shutter 21 and a locking engagement portion 22k provided on the shutter 22 so as to engage with the protrusion constitute a locking mechanism 20k for locking the shutters 21 and 22 to open and close each other. According to this configuration, since the locking shutters 21 and 22 and the like can be opened and closed, it is possible to prevent an operator from easily opening the shutters. Further, dust, fingerprints, scratches, and the like are prevented from adhering to the signal recording surface 100A of the disc 100. The locking protrusion 21k is formed integrally with the shutter 21, and the locking engagement 22k is formed integrally with the shutter 22.
Further, the shutters 21 and 22 are provided with cutouts 21h and 22 h. When the shutters 21 and 22 are closed, the slits 21h and 22h abut to form the hole 20 h. In a state where the shutters 21 and 22 are closed, the hole 20h is located at a position corresponding to the center hole 100h of the disk 100, and the diameter of the hole 20h is substantially equal to the diameter of the center hole 100h of the disk 100. Therefore, when the disk cartridge 313 is placed in the front direction, dust can be prevented from adhering to the shutters 21 and 22, and when the disk cartridge 313 is placed in the rear direction, dust can be prevented from directly adhering to the signal recording surface side 100A of the disk 100.
As described in embodiment 8, in the shutters 21 and 22, when the shutters are in the closed state, the disk holding portions 21a, 21b, 22a, and 22b for holding the disk 100 are integrally formed with the shutters 21 and 22 so as to be scattered around the disk circumference. The disk holding portions 21a, 21b, 22a, and 22b have reverse-tapered inclined surfaces at portions abutting against the disk 100. These slopes allow the disk 100 to be held reliably while being pressed against the shutters 21 and 22 when the shutters 21 and 22 are closed.
In the present embodiment, only the disk holding portion 21b is provided so as to be coupled to the shutter 21 by the elastic portion 21d without being fixed to the shutter 21, and is allowed to move in the radial direction of the disk 100 (toward the center of the disk). Therefore, even when the diameter or thickness of the mounted disk varies, the disk 100 can be held by the disk holding portions 21a, 21b, 22a, and 22b without rattling.
On the opposite side of the rotation hole 22u, i.e., in the vicinity of the disk holding portion 22a, a shutter opening/closing operation portion 22t for opening/closing the operation shutter 22 is formed integrally with the shutter 22. When the shutters 21 and 22 are attached to the cartridge main body 10, the shutter opening/closing operation portion 22t is positioned in the head opening 11h below the bridge portion 11 b. When the shutters 21 and 22 are opened and closed, the opening and closing operation portion 22t moves along the bridge portion 11b in the head opening portion 11 h. According to this configuration, it is not necessary to additionally provide a gap for the movement of the shutter opening and closing operation portion 22t on the cartridge main body 10. In other words, no extra space needs to be provided in the cartridge main body 10, and dust can be prevented from entering the cartridge main body 10. Further, since the shutter opening/closing operation portion 22t can be disposed in the head opening portion of the cartridge main body 10, a cartridge having an excellent design can be provided.
As shown in fig. 66, the shutter 21 and the shutter 22 are not butted on a straight line, and have a plurality of joining surfaces which are not on a straight line. Specifically, the shutter 21 and the shutter 22 have 21f and 22f as the 1 st bonding surfaces in the area of the chucking opening 11c, and the shutter 21 and the shutter 22 have 21g and 22g as the 2 nd bonding surfaces in the area of the head opening 11 h. In the present embodiment, the joining surfaces 21f and 22f are butted against each other on the center line of symmetry of the disk cartridge 313. On the other hand, the joint surfaces 21g and 22g are butted on a straight line which is deviated from the center line of symmetry by a predetermined angle and is about 15 to 16 degrees. By forming the shape in this manner, the shutter 22 can be formed in an integrated shape from the vicinity of the shutter opening/closing operation portion 22t, and the rigidity of the shutter 22 can be sufficiently ensured.
The shutters 21 and 22 are biased in the direction in which the shutters 21 and 22 are closed by shutter springs 31 and 32 provided in regions other than the disk storage portion 10 d. The shutter springs 31 and 32 are inserted into two spring posts 11t provided on the case lower body 11, respectively. In the present embodiment, torsion coil springs are used as the shutter springs 31 and 32. By using springs of the same shape as the shutter springs 31 and 32, the cost is reduced. In addition to the torsion coil spring, various elastic members such as a compression spring, a plate spring, and a resin elastic spring can be used as the shutter spring.
As shown in fig. 65, the disk cartridge 313 has a right protect (right protect) component 40. The correct guard member 40 is assembled in a slidable manner on the groove portion 11v of the cartridge lower body 11. By sliding the correct protection member 40, the position of the projection 40t is moved, and the detection switch provided in the drive device is closed or opened in accordance with the position of the projection 40 t. Therefore, recording to the disc 100 can be prohibited or permitted.
The cartridge main body 10, which is composed of the above-described cartridge lower body 11 and cartridge upper body 12, the drop-off preventing member 23, the shutter 21, 22, the shutter springs 31, 32, and the correct protection member 40 constitute a disk cartridge 313.
When the cartridge lower body 11 and the cartridge upper body 12 are joined, the two rotation shafts 11s of the cartridge lower body 11 are respectively fitted into the two recesses 12h of the cartridge upper body 12. Therefore, the rigidity of the rotary shaft 11s is increased, and even when the shutters 21 and 22 are in the open state, the torsion of the shutter rotation peripheral portion can be reduced by the biasing force of the shutters 31 and 32, and an accurate shutter opening amount can be ensured.
On the upper surface of the cartridge main body 10 (cartridge upper body 12), a mark surface 10f capable of describing the contents written in the stored disc 100 and an arrow-shaped stamp or a concave portion 10a indicating the insertion direction (arrow 1A) of the drive device into the disc cartridge 313 are provided.
The pair of concave portions 10c and 10e provided on both side surfaces of the cartridge main body 10 parallel to the insertion direction can be used as concave portions for engaging or positioning for drawing when the disk cartridge 313 is loaded in the drive apparatus or when the cartridge 313 is accommodated in the cassette changer. The slit portion 10b provided on one side surface of the cartridge main body can be used as a recessed portion for front-back detection when the disk cartridge 313 is inserted into the drive device.
Next, the operation of the disk cartridge 313 will be described with reference to fig. 66 showing a shutter closed state, fig. 67 showing a shutter open state, fig. 68 showing a detailed view of a shutter locking portion, and fig. 69 showing a detailed view of a disk holding portion as a shutter.
First, a description will be given of a state in which the disk cartridge 313 is mounted in the drive apparatus, that is, a storage state. At this time, as shown in fig. 69, the shutters 21 and 22 are closed, and as shown in fig. 69, the disk 100 is held and pressed in the thickness direction 100t by the inclined surface portion 22 a' of the disk holding portion 22a of the shutter 22 abutting against the edge of the disk 100, so that the signal recording surface 100A is brought into surface contact with the sheet 22p of the shutter 22, and the disk 100 is held and fixed to the cartridge main body 10. The other disk holding portions 21a, 21b, and 22b are also formed with slope portions 21a ', 21 b', and 22b ', respectively, and the disk 100 is held and fixed to the cartridge body 10 in the same manner as the slope portion 22 a'.
In this state, since the signal recording surface 100A of the disk 100 is in close contact with the sheets 21p and 22p, dust can be prevented from adhering to the signal recording surface 100A. Further, by forcibly rotating one surface of the disk 100 exposed from the outside or forcibly opening and closing the shutters 21 and 22, dirt such as dust and fingerprints adhering to the signal recording surface 100A of the disk 100 can be wiped off.
Further, since the locking shutters 21 and 22 are opened and closed by the locking mechanism 20k, the operator cannot simply open the shutters 21 and 22. Accordingly, the signal recording surface side 100A of the disc 100 can be protected, and adhesion of dust, fingerprints, scratches, and the like can be prevented.
Further, on the areas of the shutters 21 and 22 corresponding to the center hole 100h of the disc 100, holes 20h formed by the cutouts 21h and 22h of each of the shutters 21 and 22 are provided. Therefore, in a state where the cartridge 313 is set, dust entering from the center hole 100h can be prevented from adhering to the shutters 21 and 22.
As shown in fig. 70 and 71, when the shutters 21 and 22 are closed, of the joint surfaces between the shutters 21 and 22, at least joint surfaces 21f and 22f and joint surfaces 21g and 22g, which are closely attached to the upper sides of the head opening 11h and the chucking opening 11c, overlap in the thickness direction of the disk 100. Therefore, even when the shutters 21 and 22 are not closed at all for reasons such as a diameter variation of the disc 100 or when the shutters 21 and 22 are not closed at all due to incomplete locking between the shutters 21 and 22, no gap is generated at the joint surfaces of the shutters 21 and 22. In this case, dust, fingerprints, scratches, and the like can be reliably prevented from adhering to the disc 100.
Further, as shown in fig. 70, in the vicinity of the head opening 11h, the shutters 21 and 22 are bonded so that the bonding surface 22g of the shutter 22 is higher than the bonding surface 21g of the shutter 21. On the other hand, as shown in fig. 71, the shutters 21 and 22 are joined to each other around the chucking opening portion 11c such that the joining surface 21f of the shutter 21 is higher than the joining surface 22f of the shutter 22. Accordingly, the joining may be performed so that the angles of the joining surfaces are different between the plurality of joining surfaces where the shutters 21 and 22 are butted. According to this configuration, since the two shutters 21 and 22 are appropriately fitted in the thickness direction of the disk, the shutters 21 and 22 can be prevented from being suspended, and the rigidity of the bonding surfaces of the shutters 21 and 22 can be improved in a state where the shutters 21 and 22 are closed.
In the present embodiment, the shutters 21 and 22 have the bonding surfaces 21g, 22g, 21f, and 22f shown in fig. 70 and 71, but the positions or bonding methods of the bonding surfaces of the shutters 21 and 22 may be positions or bonding methods other than those shown in fig. 70 and 71. For example, the bonding surfaces 21g and 22g shown in fig. 70 may be arranged around the head opening 11h and bonded. Conversely, the joining surfaces 21f and 22f shown in fig. 71 may be arranged around the chucking opening 11c and joined together. This can further increase the rigidity of the shutters 21 and 22 when they are closed, reduce the gap between the joining surfaces, and prevent dust from entering the inside of the case.
In addition, in a state where the shutters 21 and 22 are closed, the projections 21j, 22j provided on the shutters 21 and 22 shown in fig. 68 are respectively butted against two shutter plugs (stoppers) 12f provided in the cartridge upper body 12 shown in fig. 65. Accordingly, the shutters 21 and 22 are restricted from rotating and cannot move from the closed state. Thus, the shutter can be prevented from loosening. Further, it is possible to prevent the breakage of the shutter by the intentional manipulation by the operator. Further, since the rotation of the shutter 21 and 22 is restricted, the position of the shutter opening/closing operation portion 22t does not change. Therefore, in the case where the disk cartridge 313 is inserted into the drive apparatus, the shutter opening/closing mechanism of the drive apparatus can be appropriately fitted to the shutter opening/closing operation portion 22 t.
Next, a state in which the disk cartridge 313 is mounted in the drive apparatus will be described. As shown in fig. 66, if the disk cartridge 313 is inserted into the drive apparatus in the direction 1A, the cartridge positioning pins provided in the drive apparatus are engaged with the positioning holes 11w of the disk cartridge 313 to determine the positions of the disk cartridge 313 in the drive apparatus in the horizontal direction and the height direction.
Next, the shutter opening/closing member of the shutter opening/closing mechanism provided in the drive device is engaged with the shutter opening/closing operation portion 22t shown in fig. 68, and the lock releasing member of the shutter opening/closing mechanism presses the lock pressing portion 21y connected to the lock elastic portion 21e of the shutter 21 in the direction 20A. Thereby, the lock projection 21k and the lock engagement portion 22k of the lock mechanism 20k are separated, and the lock is released. In this state, the shutter opening and closing member 22t is simultaneously moved in the 20B direction by the shutter opening and closing member. As shown in fig. 67, the shutter 21 rotates around the rotation shaft 11s in opposition to the urging force of the shutter spring 31. Accordingly, the shutter 22 interlocked with the interlocking mechanism 20c also rotates in the opposite direction to the urging force of the shutter spring 32. Thereby, the shutter 21 is completely opened, and the shutter 22 is also closed.
At this time, the lock protrusion 21k and the lock pressing portion 21y are restored to the original shape positions by the lock elastic portion 21 e. Thus, plastic deformation of the locking elastic portion 21e formed of resin does not occur. On the other hand, the signal recording surface 100A of the disk 100 is exposed to the outside through the chucking opening 11c and the head opening 11 h. The disk 100 held by the disk holding portions 21a, 21b, 22a, and 22b is opened from the holding state by rotating the shutters 21 and 22, and is rotatable in the disk storage portion 10 d.
Subsequently, the spindle motor, the turntable, and the magnetic head of the drive unit enter the chucking opening 11c and the magnetic head opening 11h, respectively, and the disk 100 is set in a recordable or reproducible state.
As described above, the disk 100 can be released from being held by the disk holding portions 21a, 21B, 22a, and 22B by rotating the shutters 21 and 22 and opening the chucking opening 11c and the head opening 11h to the outside while releasing the engagement with the lock engagement portion 22k by pressing the lock protrusion 21k in the direction 20A from the outside by a protrusion or the like and pressing only the shutter opening/closing operation portion 22t in the direction of the arrow 20B. Accordingly, since it is possible to prevent the shutter from being easily opened by an operator or the disk from being taken out, it is possible to prevent dust, fingerprints, scratches, and the like from adhering to the disk 100.
Next, the state of loading (in) the disk cartridge 313 from the drive apparatus will be described. When the mechanism for incorporating the driving device is operated, the shutter opening/closing member engaged with the shutter opening/closing operation portion 22t is separated by the shutter opening/closing operation portion 22 t. This makes it impossible to maintain the opening of the shutters 21 and 22, and the shutters 21 and 22 urged in the closing direction by the shutter springs 31 and 32 rotate in the closing direction. As a result, the shutters 21 and 22 close the head opening 11h and the chucking opening 11 c. At this time, the shutters 21 and 22 are locked to open and close by the lock mechanism 20 k. The disk 100 is held by the disk holding portions 21a, 21b, 22a, and 22b and returned to the original state. In this state, the cartridge 313 is loaded from the driving device.
As shown in fig. 69, in the disk cartridge 313, the height of the disk abutting portion 23a of the drop prevention member 23 provided in the cartridge main body 10 is the same as the height of the disk abutting portion 12 s' of the cartridge upper body 12. The slant portions 21a ' (21b ', 22a ', 22b ') of the disk holding portions 21a (21b, 22a, 22b) of the shutters 21 and 22 are formed higher than the disk butting portions 23a and 12s ' toward the upper direction of the disk 100, i.e., the 100u direction. Thus, even when the disk cartridge 313 is used in a vertical state or in a reverse state in order depending on the type of the drive apparatus, the shutters 21 and 22 can hold the disk 100 correctly. For example, particularly when the disc 100 is used in a reversed state, when the disc 100 is released from the chucking state, the abutting portions 23a and 12 s' abut against each other, and a stable horizontal state is maintained. In this state, the shutters 21 and 22 are switched to the closed state, and the disk 100 abuts against the inclined surfaces 21a '(21 b', 22a ', 22 b') and is held securely by the disk holding portions 21a (21b, 22a, 22b) which slide smoothly along the inclined surfaces.
As described above, according to the disk cartridge of the present embodiment, the cartridge main body has a structure having the disk opening, and covers only one surface of the disk. Further, by providing the opening/closing operation portion of the shutter to the head opening portion of the cartridge main body, unnecessary gaps do not need to be formed in the cartridge main body. This prevents dust from entering the case main body.
The two-piece shutter is abutted on the center line of the disk in the chucking opening area and on a straight line which is deviated from the center line of the disk by a predetermined angle in the head opening/closing area. This makes it possible to form the shutter in an integrated shape from the vicinity of the shutter opening/closing operation portion, and to sufficiently ensure the rigidity of the shutter.
Further, since the two flaps are configured to be opened and closed and locked to each other, an operator cannot easily open the flaps. Thus, dust, fingerprints, scratches, and the like can be prevented from adhering to the disk.
At least one of the plurality of disk holding portions is not fixed to the shutter, but is elastically deformable in the disk radial direction to which the force of the shutter spring is applied by the elastic portion being coupled. Thus, even when the diameter of the disk to be mounted varies, the disk can be held accurately without rattling.
(embodiment 14)
Hereinafter, a disk cartridge 314 according to embodiment 14 of the present invention will be described with reference to fig. 72 to 81. In the disk cartridge 314 of the present embodiment, the same components as those of the disk cartridge 313 of embodiment 13 are denoted by the same reference numerals as those of the disk cartridge 313.
The disk cartridge 314 differs from the disk cartridge 313 of embodiment 13 in the shape of the inner surface upper surface 12u of the cartridge upper body 12 (fig. 79), the shapes of the disk holding portions 21a, 21b, 22a, and 22b (fig. 72 to 79), and the shapes of the drop preventing members 53 (fig. 72, 77, and 78). The disk cartridge 314 further includes a disk holder 60 (fig. 72 and 81). Hereinafter, these different points of the disk cartridge 314 will be mainly described.
In the disk cartridge 313 of embodiment 13, the heights of the disk holding portions 21a, 21b, 22a, and 22b are substantially equal along the outer periphery of the disk 100. In contrast, in the disk cartridge 314 of the present embodiment, as shown in fig. 73 and 79, projections are provided in parts of the disk holding portions 21b, 22a, and 22 b. Specifically, the disk holding portions 21b, 22a, and 22b include protrusions, and include the 1 st regions 121b, 122a, and 122b having the 1 st height h1, and the 2 nd regions 221b, 222a, and 222b having the 2 nd height h2, respectively. On the other hand, the disk holding portion 21a includes only the 2 nd region 221a having the 2 nd height h 2.
The 1 st height h1 is greater than the 2 nd height h2 and is substantially the same as the heights of the disk holding portions 21a, 21b, 22a, and 22b of the disk cartridge 313 of embodiment 13. That is, the disk holding portions 21a, 21b, 22a, and 22b of the present embodiment are formed to be lower than the disk holding portions 21a, 21b, 22a, and 22b of the disk cartridge 313 of embodiment 13 except for the first areas 121b, 122a, and 122 b.
As shown in fig. 74 and 75, a step 223 with a disk-side height is provided along the outer periphery of the disk on the upper surface of the 1 st region 122a of the disk holding portion 22 a. The upper surface of the 1 st region 121b of the disk holding portion 21b and the 1 st region 122b of the disk holding portion 22b also have a step.
The 1 st areas 121b, 122a, and 122b are areas that are the earliest connected to the disk among the disk holding portions 21b, 22a, and 22b when the shutters 21 and 22 are closed, and are connected to the disk 100 earlier than the 2 nd areas 221b, 222a, and 222 b. The disk holding portions 21a, 21b, 22a, and 22b move in accordance with opening and closing of the shutters 21 and 22. Fig. 77 and 78 further show the positions of the disk holding portions 21a, 21b, 22a, 22b when the shutter 21 and 22 are closed and when they are opened. Fig. 79 and 80 show a B-B cross section and a C-C cross section shown in fig. 78.
As shown in fig. 77 to 79, when the shutters 21 and 22 are opened and closed on the inner upper surface 12u of the cartridge upper body 12, the areas 12y, 12x, and 12z through which the 1 st areas 121b, 122a, and 122b of the disk holding portions 21b, 22a, and 22b pass are recessed. On the other hand, the 2 nd regions 221b, 222a, 222b pass through the regions 12y ', 12x ', 12z ' without recesses. Thus, the thickness of the upper case body 12 in the regions 12x, 12y, 12z is thinned as compared with the regions 12x ', 12y ', 12z ' or others.
As shown in fig. 76 and 79, the front end of the 1 st region 122a is located above the lower surface of the drop prevention member 53. The tip of the 1 st region 122a of the disk holding portion 22a extends into the recessed portion of the region 12x provided in the inner upper surface 12u of the cartridge upper body 12, and the recessed portion of the region 12x faces the tip of the 1 st region 122 a. At the front end portion of the 1 st region 122a, only a part of the upper surface of the 1 st region 122a is in contact with the inner upper surface 12u due to the step 223. The 2 nd region 222a does not contact the inside upper face 12u of the cartridge upper body 12.
In order to smoothly perform the opening and closing operations of the shutters 21 and 22, it is preferable that the friction of the contact between the front end portion of the 1 st region 122a of the disk holding portion 22a and the inner upper surface 12u of the cartridge upper body 12 be small. Thus, the tip of the 1 st region 122a of the disk holding portion 22a has a convex shape having a circular arc in cross section in the radial direction of the disk 100. The step 223 is provided to compensate for insufficient strength due to the sharp shape of the tip portion, to improve the forming accuracy of the tip portion, and to facilitate deformation.
As shown in fig. 80, in the disk holding portion 22b, the front end of the 1 st region 122b is also located above the lower surface of the drop prevention member 53. The front end of the 1 st region 122b extends into a recess of the region 12z provided in the inner upper surface 12u of the cartridge upper body 12, and the recess of the region 12z faces the front end of the 1 st region 122 b. In the disk holding portion 21b, not shown, the front end of the 1 st region 121b is also located above the lower surface of the drop prevention member 53 and extends into the recess of the region 12y provided in the inner upper surface 12u of the cartridge upper body 12.
As described above, by recessing the regions 12x, 12y, and 12z of the inner upper surface 12u of the cartridge upper body 12 and extending a part of the disk holding portion into the recessed portion, the depth of the recessed portion of the regions 12x, 12y, and 12z can be reduced as a whole of the disk cartridge 314.
According to this structure, it is assumed that even in the case of using the cartridge in a vertical or back state, when the disk 100 is released from chucking and the shutters 21 and 22 are opened, the inclined portion 122 a' of the 1 st region 122a of the disk holding portion 22a is surely abutted with the disk 100. And, it also slides smoothly along the inclined portion 122a 'to abut against the inclined portion 222 a' of the 2 nd region 222a of the disk holding portion 22a (fig. 74). At this time, the inclined portion 221 a' of the 2 nd area 221a of the disk holding portion 21a, on which no protrusion is provided, also abuts against the disk 100. As a result, the disk holding portions 21a and 22a cooperate to hold the disk 100. The disk holding portions 21b and 22b also hold the disk 100 by the same operation. Therefore, even if the disk cartridge is thinned, the shutter can be opened reliably in all postures, and the disk can be held reliably.
Further, if the shape of the disk holding portion remains the same as that of embodiment 1 and the disk cartridge as a whole is thinned, it is necessary to recess the regions 12x, 12x ', 12y ', 12z, and 12z ' through which the disk holding portions 22a, 21b, and 22b on the inner upper surface 12u of the cartridge upper body 12 pass as a whole, as shown in fig. 78. In this case, the thickness of the cartridge upper body 12 is reduced across a large area, and the strength of the entire disk cartridge is impaired. In contrast, according to the disk cartridge 314, since the regions 12x, 12y, and 12z having a reduced thickness are narrow, the strength of the entire disk cartridge is not impaired, and the thickness of the disk cartridge can be reduced.
In the present embodiment, 3 protrusions are provided as the 1 st area in 4 disk holding portions, but various numbers corresponding to the number of disk holding portions or the shape of the shutter can be selected.
The disk cartridge 314 of the present embodiment differs from the disk cartridge 313 of embodiment 13 in the structure of the drop preventing member 53.
As shown in fig. 72, the drop preventing member 53 has a shape in which a part of a circular plate is cut. A cutout 54 substantially corresponding to the fall-off preventive piece 53 is provided so as to be connected to the disk opening 12w of the cartridge upper body 12, and the fall-off preventive piece 53 is fitted with the cutout 54 in a rotatable manner. As shown in fig. 77, the drop preventing member 53 is held by rotation so that a part of the drop preventing member 53 protrudes from the disk opening 12w of the cartridge upper body 12. As shown in fig. 78, the drop preventing member 53 is housed in the cartridge upper body by rotating the drop preventing member 53, and the drop preventing member can be held even in a state where the protruding portion is not in the disk opening 12 w. In the case where there is a problem that the drop preventing member 53 drops from the notch 54, an uneven portion or the like may be provided to be engaged with the side surface of the cartridge upper body 12 where the drop preventing member 53 and the notch 54 are formed.
With this structure, the thickness of the drop prevention member 53 can be made almost the same as the upper surface of the cartridge upper body 12, and therefore the thickness of the entire disk cartridge 314 can be made thin.
As shown in fig. 72, 77, 78 and 81, the disk cartridge 314 of the present embodiment is characterized in that a disk receiving portion 60 is provided on the bottom inner periphery of a disk storage portion formed by an inner lower surface 11u and an inner side surface 11i of the cartridge lower body. The tray receiver 60 has an upper surface 60a parallel to the inside lower surface 11u of the lower body of the cartridge.
When the shutters 21 and 22 are in the closed state and the disk 100 is held by the disk holding portion, the vicinity of the outer periphery of the signal recording surface 100A of the disk 100 comes into contact with the upper surface 60A of the disk receiving portion 60. This prevents dust from adhering to the signal recording surface 100A of the disk 100 or from collecting on the inside lower surface 11 of the lower body of the cartridge.
The shape of the disk receiving portion 60 may be other than that shown in fig. 81. For example, as shown in fig. 82, a disk receiving portion 76 may be provided, in which the disk receiving portion 76 has a tapered shape provided so that the inside lower face 11u and the inside side face 11i of the cartridge lower body are in contact. In this case, when the shutters 21 and 22 are in the closed state and the disc 100 is held by the disc holding portion, the outer periphery of the signal recording surface 100A of the disc 100 comes into contact with the disc receiving portion 76.
(embodiment 15)
Hereinafter, a disk cartridge 315 according to embodiment 15 of the present invention will be described with reference to fig. 83 to 87. In the disk cartridge 315 of the present embodiment, the same components as those of the disk cartridge 314 of embodiment 14 are denoted by the same reference numerals.
As shown in fig. 83, the disk cartridge 315 differs from the disk cartridge 314 in the following points: 4 kinds of recesses 85, 86, 87, 88a to 88c are provided on the region contacting the shutters 21 and 22 of the inside lower face 11u of the cartridge lower body 11 and the lower faces 21v and 22v of the shutters 21 and 22. The 4 kinds of concave portions will be described in order. Also, in the case of a disk cartridge holding a 12cm disk, the depth of the concave portion is, for example, from 0.1mm to 0.3 mm.
As shown in fig. 84 showing the closed state of the shutters 21 and 22 and fig. 85 showing the open state, first, when the shutters 21 and 22 are opened and closed, the 1 st recess 86 is provided in the region of the inner lower surface 11u of the cartridge lower body 11 connected to the disk holding portions 21a, 21b, 22a, and 22b of the shutters 21 and 22.
The disk holding portions 21a, 21b, 22a, and 22b are sandwiched between the cartridge upper bodies 12 and 11 with almost no gap. In the case of assembling the disk cartridge 315, or depending on the dimensional variations of the components constituting the disk cartridge 315, the disk holding portions 21a, 21b, 22a, and 22b may come into high-strength contact with the cartridge upper body 12 and the cartridge lower body 11. Thus, friction between the disk holding portions 21a, 21b, 22a, and 22b and the cartridge upper body 12 or the cartridge lower body 11 becomes large, opening and closing operations of the shutters 21 and 22 become unstable, and dust is generated by the friction.
Since the 1 st recess 86 is provided, gaps are formed below the disk holding portions 21a, 21b, 22a, and 22b, and therefore, such friction can be reduced, the opening and closing operations of the shutters 21 and 22 can be stabilized, and dust generated by the friction can be reduced.
The 2 nd recess 87 is provided in a region where the outer peripheral edge portions of the shutters 21 and 22 are located when the shutters 21 and 22 are closed. As shown in fig. 84 and 86, it is preferable that the 2 nd recess 87 includes a line of the inner lower surface 11u of the cartridge lower body 11 corresponding to the contour edge portions of the shutters 21 and 22, provided along the outer and inner sides thereof.
Since the disk cartridge 315 exposes and stores one surface of the disk, the disk 100 can be pressed as indicated by arrow a as shown in fig. 86. The nonwoven fabrics 21s and 22s are provided to protect the signal recording surface 100A of the disc 100, but are not completely bonded to the outer edges of the shutters 21s and 22 s. For this reason, if the disc 100 is pressed as indicated by the arrow a, the outer edge portions of the shutters 21 and 22 come into contact with the signal recording surface 100A of the disc 100, possibly causing scratches to the signal recording surface 100A.
However, by providing the 2 nd recess 87, the outer peripheral edge portions of the shutters 21 and 22 can be deformed so that a part thereof protrudes into the 2 nd recess 87. This disperses the pressing force, and prevents the outer edges of the shutters 21 and 22 from coming into high-strength contact with the signal recording surface 100A.
The 3 rd recess includes: a 3 rd recess 88a provided on the inner lower surface 11u so as to surround the chucking opening 11c and the head opening 11 h; a 3 rd recess 88b provided in a region of the inner lower surface 11u where the shutters 21 and 22 do not overlap in a state where the shutters 21 and 22 are closed; and a 3 rd recessed portion 88c provided in a region of the inner lower surface 11u where the shutters 21 and 22 overlap in a state where the shutters 21 and 22 are closed. The 3 rd recessed portions 88b and 88c are formed in an arc shape along the inner side surface of the disk storage portion. In the present embodiment, 3 rd recesses 88a are provided.
Although the disk cartridge 315 is provided with various structures for preventing dust from entering the disk cartridge, such as a disk receiving portion, and for preventing dust from adhering to the signal recording surface of the disk, it is difficult to completely prevent dust from entering or adhering thereto.
The 3 rd recess has a function of storing dust entering the disk case 315. Specifically, the dust moves to the 3 rd recessed portion in accordance with the opening and closing operations of the shutters 21 and 22. Once the dust entering the 3 rd recess does not contact the shutters 21 and 22, the dust does not move from the 3 rd recess again and stays in the 3 rd recess. By storing dust in the 3 rd recess in this way, malfunction of the shutter due to dust or dust generated by abrasion can be reduced. This effect can be obtained also by the 1 st concave portion 86 and the 2 nd concave portion 87 described above. Therefore, the 1 st recess 86, the 2 nd recess 87, and the 3 rd recesses 88a to 88c are not necessarily all provided, and even if only one of them is provided, it is possible to reduce at least malfunction of the shutter due to dust or dust generation due to friction.
Further, in order to more effectively remove dust entering between the shutters 21 and 22 and the inside lower face 11u of the lower case body 11 and store it in the 2 nd recess 87 or the like, recesses 85 may be further provided along the outer peripheral edge portions on the lower faces 21v and 22v of the shutters 21 and 22. In this case, as shown in fig. 84, in a state where the shutter 21 and 22 are closed, it is preferable to provide the recess 85 on a side closer to the cartridge center than the 2 nd recess 87. Further, as shown in fig. 86, in the state where the shutters 21 and 22 are closed, it is preferable that the recess 85 of the shutters 21 and 22 and the 2 nd recess 87 of the inside lower face 11u of the cartridge lower body 11 do not communicate.
By providing the recess 85, the outer peripheral edge portions of the shutters 21 and 22 are more easily deformed. Accordingly, even if a force indicated by arrow a is applied to the disc 100, the outer edge portions of the shutters 21 and 22 can be brought into high-strength contact with the signal recording surface 100A, and the possibility of scratches being given to the signal recording surface 100A can be reduced. Further, by providing the recesses 86, 87, 88a, 88b, and 88c with nonwoven fabrics welded or bonded thereto, gaps in the box main body can be filled, and dust can be more firmly prevented from entering from the outside.
Although the present embodiment shows an example in which various concave portions are provided in the disk cartridge 314 of embodiment 14, these concave portions may be provided in the disk cartridges of embodiments 8 to 13.
(embodiment 16)
Hereinafter, a disk cartridge 316 according to embodiment 16 of the present invention will be described with reference to fig. 88 to 93. The disk cartridge 316 of the present embodiment has the same components as those of the disk cartridge 313 of embodiment 13, and the same reference numerals are given thereto.
As shown in fig. 88, the disk cartridge 316 of the present embodiment includes a 1 st opening/closing operation portion 22t on a 1 st side surface 10p of the cartridge body substantially perpendicular to the disk insertion direction 1A, and a 2 nd opening/closing operation portion 93 on a 2 nd side surface 10 q. Here, the 1 st opening/closing operation section 22t has the same configuration as the opening/closing operation 22t of the disk cartridge of embodiment 13.
As shown in fig. 89, the 2 nd opening/closing operation part 93 has a gear shape that can be inserted into a hole of the rotation shaft 11q provided in the cartridge lower body 11. When the 2 nd opening/closing operation part 93 is inserted into the rotation shaft 11q, an opening 11r is provided in a side surface of the cartridge lower body 11 so that a part thereof is exposed from the 2 nd side surface 10q of the cartridge main body 10. The rotation shaft 11q may also be provided on the cartridge upper body 12.
Of the two shutters 21 and 22 that open or close the head opening portion 11h and the chucking opening portion 11c provided in the lower case body 11, the shutter 22 as the 1 st shutter member is formed integrally with the 1 st opening/closing operation portion 22 t. On the other hand, a sector gear 21m engaged with the 2 nd opening/closing operation portion 93 in a gear shape is provided in the vicinity of the disk holding portion 21b which is the outer side surface of the shutter 21 of the 2 nd shutter member. The center of the sector gear 21m coincides with the rotation hole 21u of the shutter 21. Further, a concave portion 21n is provided adjacent to the sector gear 21 m. The recess 21n is a space in which the 2 nd opening/closing operation part 93 in a gear shape can be engaged with the sector gear 21 m.
In order to open and close the shutters 21 and 22 using the 1 st opening/closing operation portion 22t, first, as shown in fig. 90, the engagement state of the lock mechanism 20k including the lock protrusion 21k and the lock engagement portion 22k is released. Then, as indicated by an arrow 22w, the 1 st opening/closing operation portion 22t is slid along the 1 st side surface 10p of the cartridge. Thus, as shown in fig. 91, the movement of the shutter 22 is transmitted to the shutter 21 via the interlocking mechanism 20c, and the shutters 21 and 22 cooperate to open the head opening 11h and the chucking opening 11 c.
On the other hand, in order to open and close the shutters 21 and 22 using the 2 nd opening/closing operation unit 93, first, as shown in fig. 90, the engaged state of the lock mechanism 20k is released. Next, the 2 nd opening/closing operation unit 93 is rotated as indicated by an arrow 93A. Then, the sector gear 21m starts to rotate about the rotation hole 21u in cooperation with the 2 nd opening/closing operation portion 93. This movement becomes an opening action of the shutter 21. Since the movement of the shutter 21 is transmitted to the shutter 22 through the interlocking mechanism 20c, the shutters 21 and 22 cooperate to open the head opening 11h and the chucking opening 11 c. As shown in fig. 91, when the magnetic head opening 11h and the chucking opening 11c are completely opened by the shutters 21 and 22, a part of the 2 nd opening/closing operation portion 93 protrudes into the recess 21n provided in the shutter 21.
When the shutters 21 and 22 are closed, the 1 st opening/closing operation portion 22t may be slid in the direction opposite to 22w, or the 2 nd opening/closing operation portion 93 may be slid in the direction opposite to 93A. In the present embodiment, since the shutter springs 31 and 32 are provided so as to apply a force in a direction in which the shutters 21 and 22 are closed, if a force that opens the shutters 21 and 22 in opposition to the force of the shutter springs 31 and 32 or a force that maintains the opened state is not applied to the 1 st opening/closing operation portion 22t and the 2 nd opening/closing operation portion 93, the shutters 21 and 22 can be closed even if the above-described operation is not performed.
The disk cartridge 316 of the present embodiment is provided on both a surface perpendicular to the disk insertion direction of the opening/closing operation portions of the shutters 21 and 22 and a surface parallel thereto. Therefore, even in a disc drive apparatus that only accommodates a disc cartridge in which the opening/closing operation portion of the shutter is provided on the side perpendicular to the insertion direction of the disc cartridge, a disc drive apparatus that only accommodates a disc cartridge in which the opening/closing operation portion of the shutter is provided on the side parallel to the insertion direction of the disc cartridge can record/reproduce signals on/from the disc housed in the disc cartridge of the present embodiment.
Further, according to the disk cartridge 316 of the present embodiment, the 2 nd opening/closing operation portion 93 provided on the side surface parallel to the insertion direction of the disk cartridge 316 has a gear shape. Thus, the shutter opening/closing mechanism provided in the disk drive apparatus can be formed by various gears engaged with the 2 nd opening/closing operation portion 93, and the shutters 21 and 22 of the disk cartridge 316 can be opened and closed with certainty by a relatively simple mechanism.
In the above embodiment, the sector gear 21m is provided in the vicinity of the disk holding portion 21 b. If provided at this position, the distance from the sector gear 21m to the rotation hole 21u of the shutter 21 can be made small, and the length of the sector gear 21m necessary to completely open the shutter 21 can be made short. However, the location of forming the sector gear 21m is not limited to this position. For example, as shown in fig. 92 and 93, the sector gear 21m may be provided at a position on the extended arc line of the sector gear 21m where the center of the body disk is substantially wound, and the 2 nd opening/closing operation unit 93 may be provided so as to be engaged with the sector gear 21 m. If the 2 nd opening/closing operation part 93 is provided at this position, the length of the sector gear 21m necessary to completely open the shutter 21 becomes long, and the distance from the rotation hole 21u also becomes long. Accordingly, the 2 nd opening/closing operation part 93 is rotated by a smaller force in accordance with an increase in the distance between the fulcrum and the point of action, and the shutters 21 and 22 can be opened and closed.
(embodiment 17)
Hereinafter, a disk cartridge 317 according to embodiment 17 of the present invention will be described with reference to fig. 94 to 97. In the disk cartridge 317 of the present embodiment, the same components as those of the disk cartridge 316 of embodiment 16 are given the same reference numerals.
As shown in fig. 94, the disk cartridge 317 of the present embodiment includes a 2 nd opening/closing operation section 94 on the 2 nd side surface 10q instead of the 2 nd opening/closing operation section 93 of the disk cartridge 316 of embodiment 16.
As shown in fig. 95, the 2 nd opening/closing operation portion 94 is a connecting member slidable along an opening 11r provided in the side surface of the cartridge lower body 11, and the middle portion thereof is substantially curved. Further, a projection 94a is provided at an end portion of the 2 nd opening/closing operation portion 94, and the projection 94a is engaged with a groove 21i provided in the vicinity of the disk holding portion 21b of the shutter 21.
Fig. 96 and 97 show a state in which the shutter 21 and 22 of the disk cartridge 317 are closed and an opened state, respectively. The 1 st opening/closing operation portion 22t is slid in the direction of the arrow 22w or in the opposite direction, whereby the shutters 21 and 22 can be opened and closed, which is the same as that described in the embodiments 13 and 16.
To open and close the shutters 21 and 22 using the 2 nd opening/closing operation unit 94, first, as shown in fig. 96, the engaged state of the lock mechanism 20k is released. Next, the 2 nd opening/closing operation portion 94 is slid as indicated by an arrow 94B. By this operation, a force is applied so as to move the projection 94a of the 2 nd opening/closing operation portion 94 in the direction of the arrow 94B. As a result, the shutter 21 opens with the rotation hole 21u as a center. Since the movement of the shutter 21 is transmitted to the shutter 22 through the interlocking mechanism 20c, the shutters 21 and 22 cooperate to open the head opening 11h and the chucking opening 11 c. The point at which the 2 nd opening/closing operation portion 94 is slid in the direction opposite to the arrow 94B to close the shutters 21 and 22 and apply the force of the shutter springs 31 and 32 is the same as that of the 16 th embodiment.
The disk cartridge according to this embodiment is also similar to the disk cartridge according to embodiment 16, and is capable of recording/reproducing signals to/from a disk stored in the disk cartridge according to this embodiment even when it is compatible with only a disk drive device in which the opening/closing operation portion of the shutter is provided on a side surface parallel to the direction of insertion of the disk cartridge, and even when it is compatible with only a disk drive device in which the opening/closing operation portion of the shutter is provided on a side surface parallel to the direction of insertion of the disk cartridge.
Further, as shown in fig. 96 and 97, in order to open the shutters 21 and 22, the direction (94B) in which the 2 nd opening/closing operation portion 94 is operated and the direction (1A) in which the disk cartridge is inserted are opposite to each other and parallel to each other. Therefore, if a projection or the like that engages with the 2 nd opening/closing operation portion 94 is provided in the disk drive apparatus, when the disk cartridge of the present embodiment is inserted into the disk drive apparatus, the projection engages with the 2 nd opening/closing operation portion 94 and opens the shutter 21 and 22 of the disk cartridge in conjunction with the insertion operation of the disk cartridge. Therefore, the shutter opening/closing mechanism provided in the disk drive device can be simplified.
(embodiment 18)
Hereinafter, a disk cartridge 318 according to embodiment 18 of the present invention will be described with reference to fig. 98 to 101. In the disk cartridge 318 of the present embodiment, the same reference numerals are given to the same components as those of the disk cartridge 316 of embodiment 16.
As shown in fig. 98, the disk cartridge 318 of the present embodiment includes a 2 nd opening/closing operation unit 96 on the 2 nd side surface 10q instead of the 2 nd opening/closing operation unit 93 of the disk cartridge 316 of embodiment 16.
As shown in fig. 99, the 2 nd opening/closing operation portion 96 is a head opening member connected to the disk holding portion 21a of the shutter 21. A projection 96a is provided at an end of the magnetic head part, and the projection 96a is slidable along an opening 11r provided at a side surface of the cartridge lower body 11. The 2 nd opening/closing operation portion 96 may be formed integrally with the shutter 21.
Fig. 100 and 101 show a state in which the shutters 21 and 22 of the disk cartridge 318 are closed and an opened state, respectively. The 1 st opening/closing operation portion 22t is slid in the direction of the arrow 22w or in the opposite direction, whereby the shutters 21 and 22 can be opened and closed, as described in the embodiments 16 and 17.
In order to perform the opening and closing operation of the shutters 21 and 22 by using the 2 nd opening/closing operation portion 96, first, as shown in fig. 100, the engagement state of the lock mechanism 20k is released. Next, the projection 96a of the 2 nd opening/closing operation portion 96 is slid as indicated by an arrow 96B. By this action, a force is applied to the shutter 21 as extending in the direction of the arrow 96C centering on the rotation hole 21u at the front end portion of the shutter 21. Since the movement of the shutter 21 is transmitted to the shutter 22 through the interlocking mechanism 20c, the shutters 21 and 22 cooperate to open the head opening 11h and the chucking opening 11 c. When the shutters 21 and 22 are closed, the reverse operation is performed.
The disk cartridge according to this embodiment is also similar to the disk cartridge according to embodiment 16, and is capable of recording/reproducing signals to/from a disk stored in the disk cartridge according to this embodiment even when it is compatible with only a disk drive device in which the opening/closing operation portion of the shutter is provided on a side surface perpendicular to the direction of insertion of the disk cartridge, and even when it is compatible with only a disk drive device in which the opening/closing operation portion of the shutter is provided on a side surface parallel to the direction of insertion of the disk cartridge.
Further, if the shutter 21 is formed integrally with the 2 nd opening/closing operation portion 96, the number of members constituting the disk cartridge can be reduced. This can reduce the manufacturing cost of the disk cartridge or simplify the manufacturing process.
In the above-described 16 to 18 embodiments, the 2 nd opening/closing operation section is provided on the side surface on the left side in the insertion direction of the disk cartridge. However, the place of forming the 2 nd opening/closing operation portion is not limited to the side surface shown in the above embodiment. For example, the side surface (10 r shown in fig. 88) on the right side in the insertion direction of the disk may be provided. Alternatively, the 2 nd opening/closing operation section may be provided on the rear surface of the disk cartridge (10 t shown in fig. 88). In this case, for example, if the 2 nd opening/closing operation section 96 described in embodiment 18 is a band shape, the 2 nd opening/closing operation section can be provided on the rear surface of the disk cartridge without requiring a large change.
(embodiment 19)
Hereinafter, a disk cartridge 319 according to embodiment 19 of the present invention will be described with reference to fig. 102 and 103. In the disk cartridge 319 of the present embodiment, the same components as those of the disk cartridge 313 of embodiment 13 are given the same reference numerals.
The disk cartridge 319 of the present embodiment is characterized in that the rotation preventing members 97 are provided in the disk holding portions 21b, 22a, and 22b, respectively. Further, a recess 89 for ultrasonically welding the nonwoven fabric to the valves 21 and 22 is provided.
Specifically, holes 21q, 22r, and 22q are provided in the disk holding portions 21b, 22a, and 22b, and the rotation preventing member 97 is embedded in each of the holes 21q, 22q, and 22 r. As shown in fig. 103, the rotation preventing member 97 partially protrudes from the inclined surfaces 21b ' (22a ', 22b ') in the disk holding portions 21b (22a, 22b), and the rotation preventing member 97 abuts against the outer periphery of the disk 100 when the disk 100 is held by the disk holding portions 21a, 21b, 22a, 22 b. The rotation preventing member 97 has elasticity, and is preferably formed of a material having a large friction coefficient, and for example, the rotation preventing member 97 formed of rubber is preferably used.
The rotation preventing member 97 can exhibit an effect of preventing rotation if it is provided to at least one of the disk holding portions 21a, 21b, 22a, and 22 b. However, in order to more accurately prevent the rotation of the disc 100, it is preferable to provide 3 rotation preventing members 97 as shown in the drawing.
According to this configuration, even if the operator intentionally rotates the disk 100 when holding the disk 100 in the disk holding portions 21a, 21b, 22a, 22b, the disk 100 cannot be rotated by a small force of the movement of the rotation preventing member 97 abutting against the disk 100. Thus, even if the operator, for example, intentionally presses the disk 100 against the shutters 21, 22 while rotating the disk 100, the disk 100 can be prevented from rotating. Thus, when hard dust is sandwiched between the nonwoven fabrics provided at 21 and 22, it is possible to prevent the disk from being scratched by the operation of the operator.
Further, by providing the rotation preventing member 97, the disc 100 can be prevented from being shaken in the disc holding portion.
As shown in fig. 102, the shutters 21 and 22 have a recess 89 for ultrasonic welding of the nonwoven fabric on the surface in contact with the signal recording surface of the disk 1. The concave portion 89 is provided so as to surround the outer periphery of the portion in contact with the signal recording surfaces of the shutters 21 and 22 in fig. 102. Further, it may be provided in a region inside the concave portion 89 surrounding the outer periphery thereof. The formation area of the concave portion 89 is not limited to the shape shown in fig. 102, and may be a device in which a nonwoven fabric is appropriately bonded to the shutters 21 and 22. The nonwoven fabric and the valves 21 and 22 are ultrasonically welded in the recess 89. By providing the recessed portion 89, even when the hardened portion of the nonwoven fabric or the protruding portion of the nonwoven fabric from the resin material constituting the valves 21 and 22 is generated by ultrasonic welding, the hardened portion or the protruding portion is accommodated in the recessed portion 89, and contact with the disk can be avoided. This prevents scratches from adhering to the disk. In the case where the nonwoven fabric is provided in the above embodiments 1 to 18, the concave portion 89 is preferably formed in the shutter.
(embodiment 20)
Hereinafter, a disk cartridge 20 according to the present invention will be described.
First, the structure of the disk cartridge 320 will be described with reference to fig. 104. The disk cartridge 320 has a cartridge lower body 11, a cartridge upper body 12, a 1 st shutter 21, a 2 nd shutter 22, a drop-off preventive member 23, a shield member 24, and a rotation member 25. These members are suitably formed of synthetic resin or the like. Further, these members do not need to be formed of the same material, and an optimum material suitable for each member is determined in consideration of the strength, appearance, and the like required for each member.
The box lower body 11, as shown in fig. 104, has an inside lower face 11 u. On the inner lower surface 11u, a chucking opening 11c opened so that a chucking member such as a spindle motor for rotating the disk 100 from the outside can intrude, and a head opening 11h opened so that a head for recording and/or reproducing a signal (information) can intrude and the disk 100 can be accessed. The head opening 11h communicates with the chucking opening 11 c. The magnetic head opening 11h is provided so as to reach the side of the cartridge lower body 11, and an opening 11r is provided on the side adjacent to the side where the magnetic head opening 11h is provided.
As will be described in detail below, the inner lower surface 11u is provided with grooves 11e and 11f that receive the tips of the projections 25e and 25f provided on the rotating member 25. Preferably, the grooves 11e and 11f do not penetrate the inner bottom surface 11 u. In addition, a rotation hole 39 that receives the rotation shafts 37 and 38 provided to the 1 st and 2 nd shutters 21 and 22, respectively, is provided on the inner lower surface 11 u. The rotation hole 39 preferably does not penetrate the inner lower surface 11 u. In addition, although the rotation shafts 37 and 38 are provided on the 1 st and 2 nd valves 21 and 22 and the rotation hole 39 is provided on the lower case, in the present embodiment, the rotation holes may be provided on the 1 st and 2 nd valves 21 and 22 and the rotation shaft may be provided on the lower case 11.
The cartridge upper body 12 has a circular disk opening 12w that opens the entire projection area of the disk 100, and the disk opening 12w is defined by a cylindrical side surface 12 i. The disk 100 can be set on the cartridge through the disk opening 12 w. A cutout 12g is provided in a part of the side face 12 i.
The upper face 12d of the cartridge upper body 12 is provided with a notch 12 j. The cutout 12j is engaged with the drop-off prevention member 23. Although not shown, the drop preventing member 23 and the case upper surface 12d are provided with fitting portions such as a convex portion and a concave portion that are fitted to each other so that the drop preventing member 23 is not easily dropped from the case upper body 12. In the case where the drop-off preventive piece 23 is mounted in the cartridge upper body 12, a part of the drop-off preventive piece 23 protrudes toward the disk opening portion 12 w. In the present embodiment, a notch 12j is provided to completely remove a part of the cartridge upper surface 12d in order to make the cartridge main body as thin as possible. However, even if the disk cartridge is slightly thicker than the disk cartridge of the present embodiment, the drop preventing member corresponding to the notch may be disposed by providing the notch for forming the concave portion in the disk cartridge upper surface 12 d. For example, the cutout and the drop preventing member 23 of the disk cartridge 308 of embodiment 8 may be employed in the disk cartridge of this embodiment.
Further, a drop preventing member 12s is formed integrally with the upper surface 12d of the case upper body 12 so as to protrude toward the opening 12 w. The drop preventing members 12s and 23 prevent the disk 100 from dropping from the disk opening 12 w. In particular, when the disk cartridge is inserted vertically into the drive device and used, the effect of preventing the disk cartridge from coming off is exhibited. When the disk is taken out from the disk cartridge, the engagement between the drop preventing member 23 and the cartridge upper body 12 is released, the drop preventing member 23 is taken out from the cartridge upper body 12, and the disk 100 is lifted up from the vicinity of the notch 12j, for example. The number of the anti-dropping parts can be more than 3. The drop prevention member may have another shape, and the drop prevention member may be provided at a position other than the position shown in fig. 104.
The upper case body 12 and the lower case body 11 are bonded or welded at their outer edges or joined by a connecting member such as a screw to constitute a case main body. Further, the inner lower surface 11u of the cartridge lower body 11 and the inner side 12i of the cartridge upper body 12 constitute a disk housing portion of the housing disk 100.
In the disk storage portion, the space defined by the side surface 12i is larger than the disk 100 even if the disk 100 is rotated without contact, and the disk 100 is rotatable in the storage portion. The upper portion of the disk storage portion is opened as a disk opening portion 12w, and the entire surface of the 1 st surface 100A of the disk 100 provided in the disk storage portion is exposed to the outside from the disk opening portion 12 w. On the other hand, the 2 nd surface 100A as the information recording surface of the disc 100 faces the inner lower surface 11 u.
By adopting such a configuration, the cartridge 320 can be made thinner as compared with the case of the existing cartridge in which both sides covering the tray are formed. Further, since the label surface of the disc can be exposed from the disc opening 12w, it becomes easy to check the contents of the disc written on the label surface (1 st surface) 100B. Further, by exposing the pattern of the label surface, the overall design of the disk cartridge housing the disk is also improved.
The 1 st shutter 21 and the 2 nd shutter 22 are provided on the inner lower surface 11u of the lower case 11 and are located between the signal recording surface (2 nd surface) 100A and the inner lower surface 11u of the disc 100 when the disc 100 is accommodated in the disc cartridge 320. The 1 st and 2 nd shutters 21 and 22 have rotation shafts 37 and 38, respectively, and the rotation shafts 37 and 38 are inserted into rotation holes 39 of the cartridge lower body 11. Thereby, the 1 st shutter 21 and the 2 nd shutter 22 rotate with the rotation shafts 37 and 38 as rotation shafts, and the head opening 11h and the chucking opening 11c are opened or closed to the outside. When the 1 st and 2 nd shutters 21 and 22 are in the open state, a part of the 2 nd surface 100A of the disk 100 is exposed to the outside from the head opening portion 100 h.
When the 1 st shutter 21 and the 2 nd shutter 22 are in the closed state, a notch is provided in the 1 st shutter 21 and the 2 nd shutter 22 so as to form a hole 20h in a region overlapping with a center hole of the disk 100 accommodated in the disk accommodating portion. On the periphery of the notch of the 1 st shutter 21 and the 2 nd shutter 22, convex portions 21w and 22w are formed. When the 1 st shutter 21 and the 2 nd shutter 22 are closed, the projections 21w and 22w are in close contact with each other, and constitute a projection 20w which is in contact with the entire periphery of the disk 100 in the vicinity of the center hole 100 h. In embodiment 12, the protrusion 20w prevents dust from entering the signal recording surface 100A of the disc 100 through the center hole 100h, as described in detail above. Projections 35 and 36 are formed on the convex portions 21w and 22 w. The upper surfaces of the projections 35 and 36 are higher than the upper surfaces of the projections 21w and 22 w.
When the 1 st shutter 21 and the 2 nd shutter 22 are in the closed state, the 1 st shutter 21 has a disk holding portion 21b and the 2 nd shutter 22 has disk holding portions 22a and 22b in order to hold the disk 100 in the disk storage portion. These disk holding portions perform the same operations as those described in the disk holding portions of embodiments 8 to 19. In the 8 th to 19 th embodiments, although the disk holding portion 21a is also provided in the 1 st shutter 21, in the present embodiment, the 1 st shutter 21 is provided with the convex portion 27a instead of the disk holding portion 21 a. The projection 27a prevents the side surface of the disk 100 from being exposed from the chucking opening portion 11h reaching the side surface of the cartridge lower body 11 when the 1 st shutter 21 and the 2 nd shutter 22 are in the closed state.
The 1 st shutter 21 and the 2 nd shutter 22 do not abut on a straight line, and have a plurality of bonding surfaces which are not on a straight line. Specifically, although the engagement surfaces 21f and 22f are located substantially on the center line of symmetry of the disk cartridge 320, the engagement surfaces 21g and 22g are offset from the center line of symmetry by only a predetermined angle, here, by about 15 to 18 degrees and abut on a straight line. The effects of this configuration have already been described in detail in embodiment 13. As described in embodiment 13, the joint surfaces 21g and 22g overlap in the thickness direction of the disc 100.
As will be described in detail below, the 1 st shutter 21 and the 2 nd shutter 22 have guide grooves 27e and 28f that engage with the projections 25e and 25f of the rotating member 25. The guide grooves 27e and 28f penetrate the 1 st shutter 21 and the 2 nd shutter 22 as the protrusions 25e and 25f of the rotation member 25 penetrate.
The rotating member 25 includes a tray receiving portion 25a provided at the bottom of the side wall 25i and the side wall 25 i. The side wall 25i has a cylindrical shape having a size and a shape surrounding the side surface of the housed tray 100, and is divided by the notches 25d, 25g, and 25 h. The disk receiving portion 25a has a flat ring shape, and a notch 25c is provided in a part thereof. When the 1 st shutter 21 and the 2 nd shutter 22 are in the opened state, the rotating member 25 rotates, and the notch 25c overlaps the head opening 11 h. A projection 25m for moving the shield member 24 is provided in the vicinity of the slit 25 d.
The shield member 24 is disposed on the cutout 12g portion of the side wall 12i of the cartridge upper body 12. The structure and operation of the shield member will be described in detail below.
The respective components are assembled while maintaining the vertical relationship as shown in fig. 104. As a result, the 1 st shutter 21 and the 2 nd shutter 22 are disposed on the lower case 11, and the lower case 11 and the upper case 12 are joined by providing the rotating member 25 thereon.
Fig. 105 shows a plan view of the disk cartridge 320 with the cartridge upper body 12 removed, and fig. 106 shows a cross section taken along line F-F of fig. 105. The 1 st shutter 21 and the 2 nd shutter 22 are closed.
As shown in fig. 105, the disk 100 is held by the disk holding portion 22a of the 2 nd shutter 22 at the position of the notch 25d of the rotating member 25. Further, at the positions of the notches 25g and 25h of the rotating member 25, the disk holding portion 21b of the 1 st shutter 21 and the disk holding portion 22b of the 2 nd shutter 22 hold the disk 100, respectively.
The operating portion 25j of the rotating member 25 is located in the opening 11r provided in the lower tray body 11. The protrusions 35 and 36 provided in the 1 st shutter 21 and the 2 nd shutter 22 protrude into the center hole 100h of the disc 100. The rotation member 25 has a rotation center substantially coincident with the center of the disk 100 and is rotatably disposed in the disk housing as a rotation shaft.
The rotation shafts 37 and 38 of the 1 st and 2 nd shutters 21 and 22 are positioned below the disk receiving portion 25a of the rotation member 25. As shown in fig. 106, since there is almost no gap between the upper surface of the side wall 25i of the rotating member 25 and the upper surface 12d of the cartridge upper body 12, the movement in the vertical direction of the rotating member 25 is restricted. Thus, the rotation member 25 can effectively prevent the rotation shafts 37 and 38 from being lifted and dropped from the rotation hole 39 provided in the lower case body 11 when the 1 st and 2 nd shutters 21 and 22 are rotated.
As shown in fig. 106, since the upper surface 25k of the disk receiving portion 25a of the rotating member 25 is inclined, the disk 100 is brought into close contact only with the side wall 25i of the upper surface 25k of the disk receiving portion 25. According to this configuration, even if the width of the ring of the disk receiving portion 25a is increased in order to secure the strength of the rotary member 25, the upper surface 25k is brought into close contact with only the outer periphery of the signal recording surface of the disk 100, and the signal recording area can be prevented from coming into contact with the disk receiving portion 25 a. The upper surface of the portion of the disk receiving portion 25 that contacts the disk 100 coincides with the upper surfaces of the protruding portions 21w and 22w of the 1 st and 2 nd shutters 21 and 22.
Next, the disc holding operation and the opening/closing operation of the 1 st shutter 21 and the 2 nd shutter 22 will be described. Fig. 107 is a plan view showing the arrangement of the 1 st shutter 21, the 2 nd shutter 22, and the rotation member 25 when the 1 st shutter 21 and the 2 nd shutter 22 are in the closed state. Fig. 108 shows a cross section along line G-G of fig. 107. Fig. 109 is a plan view showing the arrangement of the 1 st shutter 21, the 2 nd shutter 22, and the rotation member 25 when the 1 st shutter 21 and the 2 nd shutter 22 are in the development state. FIG. 110 shows a cross-section taken along line H-H of FIG. 107. In fig. 107 and 109, the disc 100 is indicated by a two-dot chain line.
When the 1 st shutter 21 and the 2 nd shutter 22 are in the closed state, as shown in fig. 107, the disk holding portions 21b, 22a, and 22b protrude from the notches 25g, 25h, and 25d provided in the side wall 25i of the rotating member 25 toward the center of the disk 100, respectively, and hold the disk 100. As shown in fig. 108, since the disk holding portions 22a and 22B are provided with the reverse tapered inclined surfaces 22a 'and 22B' which are in contact with the edge of the 1 st surface 100B of the disk 100, the disk holding portions 22a and 22B press the disk 100 toward the center of the disk 100 and also press the disk 100 toward the 1 st shutter 21 and the 2 nd shutter 22. The disk holding portion 21b not shown in the figure is also in the same state. Thereby, the vicinity of the outer periphery of the signal recording surface of the disc 100 comes into contact with the disc receiving portion 25 a. As described in embodiment 12, the convex portions 21w and 22w of the 1 st and 2 nd shutters 21 and 22 are brought into close contact with the center hole of the signal recording surface 100B of the disc 100 (not shown). The signal recording area of the signal recording surface 100A of the disc 100 is cut off from the outside by the disc receiving portion 25a of the rotary member and the projections 21w and 22w of the 1 st and 2 nd shutters 21 and 22, so that dust or dirt can be prevented from adhering to the signal recording area, and scratches can be prevented from adhering to the signal recording area.
Further, the size of the hole 20h provided in the 1 st shutter 21 and the 2 nd shutter 22 is substantially equal to the center hole 100h of the disc 100. Therefore, even if the disk cartridge 320 is placed in a state of being closed with the 1 st and 2 nd shutter 21 and 22 closed to face away, portions in the signal recording surface 100A of the disk 100 are not exposed from the 1 st and 2 nd shutter 21 and 22. Therefore, dust or dirt can be prevented from accumulating in the signal recording area.
When the 1 st shutter 21 and the 2 nd shutter 22 are opened, the shutter opening/closing mechanism of the disk drive apparatus is engaged with the operation portion 25j, and the operation portion 25j is moved in the direction indicated by the arrow 25A. By this operation, the rotation member 25 starts rotating in the disk storage portion, and the protrusions 25e and 25f also start rotating with the center of the disk 100 as the rotation axis. Since the projections 25E and 25F are engaged with the guide grooves 27E and 28F, the projections 25E and 25F enter the guide grooves 27E and 28F in the directions of arrows 27E and 28F, respectively, while pressing the side walls of the guide grooves 27E and 28F in accordance with the rotation of the projections 25E and 25F. By the protrusions 25e and 25f pressing the side walls of the guide grooves 27e and 28f, the 1 st shutter 21 and the 2 nd shutter 22 start moving in the directions of the arrows 21A and 22A, respectively, centering on the rotation shafts 37 and 38.
The disk holding portion 21b also starts moving in the direction of arrow 21A around the rotation shaft 37. The disk holding portions 22A and 22b move in the direction of arrow 22A. Thus, the disk holding portions 21b, 22a, and 22b are separated from the disk 100, freeing the disk 100.
The protrusions 35 and 36 provided to the 1 st shutter 21 and the 2 nd shutter 22 are also moved in the arrow 21A and 22B directions in accordance with the opening operation of the 1 st shutter 21 and the 2 nd shutter 22. At this time, since the disc 100 is not moved, the projections 35 and 36 are in contact with the non-signal recording area indicated by 100e of the signal recording surface 100A. Since the projections 35 and 36 protrude further than the projections 21w and 22w, the projections 21w and 22w are in a non-contact state with the signal recording surface 100A when the signal recording surface 100A is in contact with the projections 35 and 36. This prevents the protruding portions 21w and 22w from contacting the signal recording surface 100A, particularly the signal recording region.
As shown in fig. 109, if the rotation of the rotating member 25 is continued, the convex portions 25e and 25f reach the end portions of the guide grooves 27e and 28 f. At this time, the 1 st and 2 nd shutters 21 and 22 completely open the head opening portion 11h and the chucking opening portion 11c, and the 1 st and 2 nd shutters 21 and 22 are opened.
At this time, the notch 25c provided in the disk receiving portion 25a of the rotating member 25 overlaps the head opening 11h, and the disk receiving portion 25a does not protrude in the head opening 11 h. Therefore, in a state where the 1 st and 2 nd shutters 21 and 22 are completely opened, the magnetic head of the disk drive apparatus can be very close to the disk 100 without hindering access to the disk 100 of the magnetic head.
Further, as shown in fig. 109 and 110, even if the 1 st and 2 nd shutters 21 and 22 are in the opened state, the protrusions 35 and 36 of the 1 st and 2 nd shutters 21 and 22 are in contact with the disc 100 in the non-signal recording area 100e of the signal recording surface 100A. Therefore, the projections 35 and 36 are in contact with the signal recording surface, and can prevent the adhesion of scratches.
When the 1 st shutter 21 and the 2 nd shutter 22 are closed, the operation is reversed to the above operation. The closing operation of the 1 st shutter 21 and the 2 nd shutter 22 is performed, the disk holding portions 21b, 22a, and 22b approach the disk 100, and the operation of holding the disk 100 is described in detail in the 8 th to 13 th embodiments, and thus, the description thereof is omitted.
Next, the structure and operation of the shield member 24 will be described. As shown in fig. 111, the shield member 24 includes a side wall portion 24d and a pair of rotation shafts 24b provided on the side wall portion 24 d. At the front end of the side wall portion 24d, the 1 st butting portion 24a is provided. Since the 1 st butting portion 24a needs to butt against the outer side surface of the disc 100, the 1 st butting portion 24a is formed of a curved surface having the same curvature radius as the outer side surface of the disc 100. The rear surface of the side wall 24d is a 2 nd butting portion 24 f. A wrist portion 24c is provided near each of the turning shafts 24b, and a 3 rd butting portion 24e is provided at the tip end thereof.
As shown in fig. 112, the shield member 24 is held so that the rotation shaft 24b is positioned between the upper surface 12d of the cartridge upper body 12 and the side wall 25i of the rotation member 25, and can be swung about the rotation shaft 24b as an axis as indicated by an arrow 24A. A line connecting the centers of the pair of rotation shafts 24B is parallel to a line connecting the disks 100 and is located above the 1 st surface 100B of the disk.
Fig. 113 and 114 show cross sections of the end portion and the central portion of the protective member 24 in the state where the 1 st shutter 21 and the 2 nd shutter 22 are closed. As shown in these figures, the convex portion 25m provided on the rotary member 25 abuts against the 2 nd abutting portion 24f of the shield member 24, and the side wall portion 24d is pressed toward the center of the disk 100 so that the 1 st abutting portion 24a abuts against the outer side surface of the disk 100. Therefore, dust and dirt are prevented from returning from the notch 25c (fig. 104) of the disk receiving portion 25a to the signal recording surface 100A of the disk 100. Thus, the disk receiving portion 25a and the cartridge guard member 24 are in continuous contact with the outer periphery of the disk 100, and dust and dirt are completely prevented from returning to the signal recording surface 100A of the disk 100.
When the rotation member 25 is rotated to open the 1 st shutter 21 and the 2 nd shutter 22, the projection 25m of the rotation member 25 is separated from the shield member 24, and thus the shield member 24 does not apply a force to the disc 100 side.
When the 1 st shutter 21 and the 2 nd shutter 22 are opened, and the rotating member 25 is further rotated, the outer side surface of the side wall 25i of the rotating member 25 comes into contact with the 3 rd butting portion 24e of the shielding member 24, and the side wall portion 24d is biased in the outer direction of the disc 100. Fig. 115 and 116 show cross sections of the end portion and the central portion of the shield member 24 illustrating this state. As shown in fig. 115, the outer side surface of the disk 100 is separated from the 1 st butting portion 24a of the shield member 24. Thereby, the disk 100 is rotatable in the disk housing portion.
As described above, the shield member 24 can be swung in conjunction with the rotating member 25 to bring the plate 100 into abutment with the shield member and to bring the plate 100 into a state of being spaced apart from the outer surface of the plate 100 so as to be rotatable.
As described above, according to the present embodiment, the disk cartridge can be thinned while exposing the label surface 100B of the disk from the disk cartridge to optimize the design of the entire disk cartridge.
Further, the first shutter 21 and the second shutter 22 can be opened and closed by rotating the rotating member 25, and the disk 100 can be reliably held by the disk holding portions 21b, 22a, and 22b when the shutters are closed.
Further, by the disk holding portion 25a provided on the rotary member 25, the projections 21 and 22w provided on the 1 st shutter 21 and the 2 nd shutter 22, and the shield member 24 interlocking with the rotary member 25, even if the label surface 100B of the disk 100 is exposed in the state where the disk 100 is held, it is possible to surely prevent dust or dirt from adhering to the signal recording surface 100A of the disk 100, or to prevent scratches from adhering to the signal recording surface 100A.
In the present embodiment, the opening 11r for operating the operation portion 25j for rotating the rotating member 25 is provided in the side surface adjacent to the side surface where the head opening is provided, but may be provided in other side surfaces of the disk cartridge so as to operate the operation portion. Alternatively, a plurality of operation units may be provided. For example, the operation portion 25j of the present embodiment may be set as the 1 st operation portion, and a projection or the like as the 2 nd operation portion may be provided on the side wall 25i of the rotating member 25 so that the 2 nd operation portion is positioned in the head opening 11 h. Alternatively, as shown in fig. 105, a projection or the like as a 2 nd operation portion may be provided near the disk holding portion 22a of the 2 nd shutter 22, and the 2 nd shutter 22 may be directly operated. In this case, as the 2 nd shutter moves, the rotation member 25 rotates, so that the 1 st shutter 21 moves in conjunction with the rotation member 25.
In the present embodiment, the shield member 24 prevents dust and the like from entering the signal recording surface 100A of the disc 100 from the notch portion 25c formed in the disc receiving portion 25 a. However, the intrusion of dust from the cutout portion 25c can be prevented by adopting other configurations without the shield member 24.
For example, as schematically shown in fig. 117, the side wall 12i is continued in a portion of the notch 12g provided in the side wall 12i of the cartridge upper body 12 to close the notch 12 g. Also, a disk holding portion 22b and a 2 nd shutter 22 (not shown in the figure) are provided at positions symmetrical to the notch 12g with respect to the center of the disk 100. The disk holding portion 22b is movable toward the disk center and is biased toward the disk center, as in the disk holding portion of embodiment 13. As in the disk holding portion of embodiment 19, an elastic material may be provided in a portion of the disk holding portion where the disk contacts, and the disk 100 may be elastically biased toward the center of the disk 100.
As shown in fig. 118, if such a disk holding portion 22b is used, the disk 100 is held by the disk holding portion 22b being in contact with the disk 100, and the outer side surface of the disk 100 can be pressed in the region where the notch 25c of the side wall 12i of the cartridge upper body is provided. Since the size of the disk storage portion and the disk 100 is hardly replaceable, the radius of curvature of the side wall 12i and the radius of curvature of the outer side surface of the disk 100 also almost coincide. As a result, the outer surface of the disk 100 is in close contact with the side wall 12i of the cartridge upper body 12, and in cooperation with the disk receiving portion 25a, dust can be prevented from entering the signal recording surface of the disk 100.
According to this configuration, since it becomes unnecessary to provide the shield member 24, the configuration of the disk cartridge can be simplified.
(embodiment 21)
Hereinafter, a disk cartridge 21 according to the present invention will be described.
Fig. 119 is a perspective view of the disk cartridge 321 in an exploded state. The disk cartridge 321 is different from the disk cartridge 320 (embodiment 20) shown in fig. 104 in that the drop preventing member 55 has a different shape and the cartridge lower body 11 is provided with the removal history hole 11 n. Therefore, the drop prevention member 55 and the removal history hole 11n will be described in detail below.
As shown in fig. 119, the drop preventing member 55 is provided near a side surface opposite to a side surface where the head opening 11h of the cartridge main body constituted by the cartridge upper body 12 and the cartridge lower body 11 is provided. The retaining member 55 has a pivot shaft 55a near one end in the longitudinal direction and an engaging portion 55d having a projection 55e at the other end in the longitudinal direction.
The cartridge upper body 12 is provided with a rotation hole 12m for receiving the rotation shaft 55a of the drop prevention member 55, an opening 12p for inserting the engagement portion 55d, and a hole 12n for receiving the projection 55e of the engagement portion 55 d. When the drop preventing member 55 is attached to the cartridge upper body 12, the recess 12k is provided in a region including the rotation hole 12m and the opening 12p so that the upper surface of the drop preventing member 55 has the same height as the upper surface 12d of the cartridge upper body 12 n. When the drop preventing member 55 projects toward the opening 12w and projects upward of the tray 100, the projection 55e of the engaging portion 55d is inserted into the hole 12n, and the drop preventing member 55 is fixed.
A withdrawal history hole 11n is provided in the lower case 11. Fig. 120 is a diagram showing a structure in which the vicinity of the extraction history hole 11n is enlarged. The cover member 56 is provided in the removal history hole 11n, and the connecting portion 56a connects the cover member 56 and the side surface of the removal history hole 11n so that the cover member 56 covers a part of the opening of the removal history hole 11 n. The lid member 56 is formed in a columnar shape (pin shape), and a projection 56b is provided at the tip thereof.
The center of the removal history hole 11n coincides with the center of the rotation hole 12m of the cartridge upper body 12 and the center of the rotation shaft 55a of the drop prevention member 55. As described below, the lid member 56 is engaged with the drop prevention member 55, and if the drop prevention member 55 is rotated along the circumference of the rotation shaft 55a, a force for rotating the lid member 56 along the circumference of the shaft 56c is applied. As a result, the connection portion 56 is broken, the lid portion 56 is separated from the lower case body 11, and the opening of the removal history hole 11n is completely exposed.
When the disk cartridge 321 is manufactured, the disk 100 is accommodated in a disk accommodating portion defined by the side wall 12i of the cartridge upper body 12. After that, if the disk 100 is taken out from the disk cartridge 321 and the drop prevention member 55 is rotated, the cover member 56 is separated and the opening of the take-out history hole 11n is exposed. When the cover 56 is detached, the drop prevention member 55 is operated to expose the opening of the removal history hole 11n even if the tray 100 is replaced with a different type of tray. That is, if the removal history hole 11n is closed by the cover member 56, it indicates that the disc 100 in the disc cartridge 321 is a disc that is stored when the disc cartridge 321 is manufactured. When the removal history hole 11n is opened, the possibility that the disc 100 in the disc cartridge 321 is different from the disc stored when the disc cartridge 321 is created is shown.
The disk drive apparatus to which the disk cartridge 321 is attached detects the open/closed state of the pickup history hole 11n, and uses the detection result in controlling the recording and reproducing operations. For example, a disk cartridge 321 for storing a disk recordable and reproducible in a predetermined format may be manufactured. The disk drive apparatus detects the state of the removal history hole of the disk cartridge 321 inserted therein. If the extraction history hole 11n is closed, it is judged that the disk drive apparatus has received a disk recordable and reproducible by a predetermined format. And, the recording or reproducing operation is immediately performed by the format. On the other hand, if the removal history hole 11n is opened, the disk drive apparatus determines that the type of the disk accommodated in the disk cartridge is unknown. Then, the disk drive apparatus first performs an operation of confirming the type of the disk by irradiating various test signals to the disk in order to determine the type of the disk in the disk cartridge. Then, according to the confirmation result, a signal is recorded on the disk or reproduced on the disk under the optimum condition.
The structure of the drop prevention member 55 and the operation of exchanging the take-out tray 100 with another tray will be described in detail below.
Fig. 121 shows a state where the drop preventing member 55 protrudes above the disk 100 to prevent the disk 100 from dropping from the opening 12w of the cartridge upper body 12. In this state, the disk cartridge 321 is inserted into the disk drive apparatus while being stored. Fig. 122 shows a structure in the vicinity of the rotation axis 55a in the cross section taken along the line J-J shown in fig. 121, and fig. 123 shows a structure in the vicinity of the engagement portion 55d in the cross section taken along the line J-J shown in fig. 121. Fig. 124 shows a structure of a cross section taken along line K-K shown in fig. 121.
As shown in fig. 121, the drop preventing member 55 is provided at a position facing the drop preventing member 12s protruding from the cartridge upper body 12 toward the disk opening 12. The drop prevention member 55 extends in the longitudinal direction of the drop prevention member 55, and has a side surface 55f recessed in an arcuate shape.
As shown in fig. 122, a cylindrical boss (boss)12q is formed on the cartridge upper body 12, and the inner space of the boss 12q defines a rotation hole 12 m. The rotation shaft 55a of the drop prevention member 55 is inserted into the rotation hole 12 m. A protrusion 55c is provided on the front end of the turning shaft 55a so that the turning shaft 55a does not fall out of the turning hole 12 m. Further, an inner space having an opening with a cross section similar to that of the removal history hole 11n is provided on the inner side of the rotation shaft 55a, and the lid member 56 is housed therein. The protrusion 56b of the cover 56 is fitted in the recess 56b provided in the drop prevention member 55. The center of the rotation shaft 55a of the drop prevention member 55 coincides with the rotation shaft 56c of the lid member 56. As described above, the side surfaces of the cover member 56 and the removal history hole 11n are connected by the connection portion 56 a. The connecting portion 56a is thinner than the cartridge lower body 11.
As shown in fig. 123, an engagement portion 55d provided at an end portion of the drop prevention member 55 is inserted into the opening 12p of the cartridge upper body 12 and connected to the rear surface of the cartridge upper body 12. The engaging portion 55d has a projection 55e at its tip end, and engages with the hole 12n of the cartridge upper body 12. When the projection 55e is pressed in the direction of the arrow 55A, a part of the engaging portion 55d is elastically deformed, and the thickness of the region 55f is reduced. The engaging portion 55d of the drop prevention member 55 and the side surface of the opening 12p of the cartridge upper body 12 are provided with step portions 55g and 12o that engage with each other, so that the vicinity of the engaging portion 55 is prevented from being disengaged from the cartridge upper body 12 when the drop prevention member 55 is rotated.
When the disc 100 is taken out from the disc cartridge 321, as shown in fig. 123 and 124, the drop preventing member 55 is rotated in the direction of arrow 55B shown in fig. 121 while the projection 55e engaged with the hole 12n of the cartridge upper body 12 is pressed in the direction of arrow 55A. Then, as shown in fig. 124, the region 55f of the engaging portion 55d is elastically deformed, and the tip of the projection 55e moves the engaging portion 55d while contacting the inclined surface 12v provided on the back surface of the cartridge upper body 12. Since the inclined surface 12v is provided on the rear surface of the cartridge upper body 12, the engaging portion 55d can be moved to the position indicated by the broken line in fig. 124 by the inclined surface 12v even if a large urging force is not supplied. At this position, the tip of the protrusion 55e has the same height as the tip of the protrusion 55e when the hole 12n is engaged, so that the elastic deformation generated in the region 55f of the engaging portion 55d is restored.
At this time, as shown in fig. 122, the drop prevention member 55 rotates the periphery of the center 55C of the rotation shaft 55a in the direction of arrow 55B. With this operation, a force is applied to the lid member 56 about the rotation shaft 56C in the direction of the arrow 55B, so that the connection portion 56a is broken and the lid member 56 is detached.
Fig. 125 shows a state where the movement of the drop prevention member 55 is completed and the drop prevention member 55 moves to a position where the tray 100 can be taken out. At this time, as shown in fig. 124, since the engaging portion 55d has moved to a position where it contacts the side surface of the cartridge upper body 12, the above-mentioned drop prevention member 55 cannot be moved in the direction of the arrow 55B.
As shown in fig. 125, although a part of the drop preventing member 55 protrudes inside the disk opening portion 12w, the drop preventing member 55 can be prevented from protruding above the disk 100 by moving the disk 100 toward the drop preventing member 12 s. Therefore, for example, a finger enters the center hole 100h of the disk 100, and the disk 100 is separated from the cartridge upper body near the separation preventing member 55, so that the disk 100 can be taken out from the disk cartridge 321.
Fig. 126 and 127 show the structure in the vicinity of the rotation axis 55a and the vicinity of the engagement portion 55d on the line cross section shown in fig. 125, respectively. As described above, the lid member 56 is detached in the process of rotating the drop prevention member 55. Thus, as shown in fig. 126, if the movement of the drop prevention member 55 is finished, the extraction history hole 11n is in the fully opened state. As shown in fig. 127, since the projection 55e of the engaging portion 55d engages with the recess 12r provided in the cartridge upper body 12, the elastic deformation of the region 55f of the engaging portion 55d is restored.
After the disk 100 is taken out and another disk 100 is accommodated in the disk cartridge 321, the drop preventing member 55 is moved in the direction opposite to the arrow 55B. If the drop-off preventive member 55 is returned to the position shown in fig. 121, the projection 55e of the engaging portion 55d is engaged with the hole 12n of the cartridge upper body 12, and the drop-off preventive member 55 is fixed relative to the cartridge upper body 12.
In the case of exchanging the tray 100 again, the falling off preventive member 55 can also be operated in the same manner as the above-described operation. However, since the lid member 56 is already detached, the lid member 56 is not detached as the drop prevention member 55 is rotated.
According to the present embodiment, the side surface 55f of the drop prevention member 55 is recessed in an arcuate shape. Thus, even if the drop prevention member 55 is not rotated greatly, the drop prevention member 55 can be prevented from protruding above the tray 100, and since the rotation angle of the drop prevention member 55 is small, the engagement portion 55d of the drop prevention member 55 is in contact with the cartridge upper body 12, and the engaged state can be maintained. This can maintain the state in which both ends of the drop prevention member 55 are in contact with the case upper body 12 even when the tray 100 is taken out, and can maintain the mechanical strength of the drop prevention member 55. Therefore, even if the disk cartridge 321 is dropped by mistake or the operator strongly operates the drop prevention member 55 when taking out the disk 100, the drop prevention member 55 can be prevented from being damaged.
Further, the removal history hole is opened by rotating the drop prevention member 55. This eliminates the need for the operator to bend the claws of the history hole as in the conventional case.
Although the lid member 56 is formed in a columnar shape in the present embodiment, the lid member 56 may have another shape if it is a portion that is continuous with the cartridge lower body 11 so as to cover at least a part of the removal history hole 11n and is detached in conjunction with the rotation of the drop preventing member 55. For example, the lid member may be constituted by a claw provided in the opening of the removal history hole 11n, and an auxiliary member provided between the drop prevention member 55 and the claw, such as a claw pressed with the rotation of the drop prevention member 55.
In the present embodiment, the disk 100 is prevented from dropping and the disk 100 is taken out by rotating the drop preventing member 55 in parallel with the disk 100, but the drop preventing member 55 may be moved in another direction.
Fig. 128 and 129 show the drop prevention member 57 which moves in parallel. The drop prevention member 57 also has a side surface 57f in the longitudinal direction thereof recessed in an arcuate shape. Fig. 128 shows a state where the tray 100 is held, and a part of the drop prevention member 57 is projected above the tray 100. When the tray 100 is taken out, the drop prevention member 57 is moved in the direction of an arrow 57A perpendicular to the longitudinal direction shown in fig. 129. The side surface 57a of the drop preventing member 57 is provided with a convex portion, a concave portion, or the like which is engaged with the cartridge upper body 12, and it is preferable that the drop preventing member 57 is hardly dropped from the cartridge upper body 12.
Since the side surface 57f of the drop prevention member 57 is also recessed in a bow shape, the drop prevention member 57 can be moved only to prevent the drop prevention member 57 from protruding above the tray 100. Accordingly, the disc 100 can be taken out while the large part of the drop preventing member 57 is still in contact with the cartridge upper body 12, and the mechanical strength of the drop preventing member 57 can be prevented from being weakened at the time of disc exchange.
The drop prevention members 58 shown in fig. 130 and 131 rotate about the rotation shafts 58a provided at both ends in the longitudinal direction. In this case, the drop preventing member 58 is in contact with the cartridge upper body 12 in the arrangement shown in fig. 130, and the drop preventing member 58 is preferably urged by a spring or the like. The drop-off preventive piece 58 is rotatable at the position shown in fig. 131. However, since the side surface 58f of the drop prevention member 58 in the long axis direction thereof is also recessed in an arcuate shape, the drop prevention member 58 can be rotated only a little from the state shown in fig. 130 in order to take out the tray 100.
When the drop preventing member 57 and the drop preventing member 58 are provided in the disk cartridge, a mechanism for dropping the lid member in conjunction with the sliding operation of the drop preventing member 57 and the rotating operation of the drop preventing member 58 may be adopted. Alternatively, a mechanism may be provided in which the lid member covering the takeout area is not interlocked with the drop prevention member 57 and the drop prevention member 58, and the operator separates the lid member to allow the sliding operation of the drop prevention member 57 and the rotating operation of the drop prevention member 58.
(embodiment 22)
Hereinafter, a 22 nd embodiment of the disk cartridge according to the present invention will be described.
Fig. 132 is a plan view of the disk cartridge 322, and fig. 133 is a sectional view taken along line L-L of fig. 132. The disk cartridge 322 is similar to the disk cartridge described with reference to fig. 117 and 118, and prevents dust from entering through the notch 25c provided in the disk receiving portion 25a without using a shield member. Although shown in detail in fig. 132, the disk cartridge 322 includes the 1 st shutter 21, the 2 nd shutter 22, the rotation member 25, and the drop preventing member 55, which have been described in the embodiments 20 and 21. These members have the structures described in embodiments 20 and 21.
In the disk cartridge of the 20 th and 21 st embodiments shown in fig. 104 and 119, a cutout 12g is provided in a side wall 12i of the cartridge upper body 12. The position of the notch 12g corresponds to a region where the notch 25c provided in the disk receiving portion 25a is located when the 1 st shutter 21 and the 2 nd shutter 22 are in the closed state.
In the disk cartridge 322 of the present embodiment, a side wall 12i continuous with a portion of the notch 12g is also provided. Further, as shown in fig. 134, on the region corresponding to the cutout 12g, a side wall 12 i' is provided in a portion in contact with the tray 100.
The side wall 12i defines the disk opening 12w, and therefore has a larger radius of curvature than the disk 100. In contrast, as shown in fig. 135, the side wall 12 i' has the same radius of curvature as the disc 100. As shown in fig. 132, the center of the cylinder formed by the side wall 12i coincides with a point C1 that is the center of the disk storage portion. Correspondingly, the center of the curved surface of the side wall 12 i' coincides with the point C2. Point C2 is offset from point C1. The side wall 25i of the rotating member 25 has a cylindrical shape having a point C1 as the center of the disk storage portion, and rotates about a point C1.
Further, the disc holding portion 22b holds the disc 100 at a position where the center of the disc 100 coincides with the point C2. In fig. 132, although only the disk holding portion 22b is shown, the disk holding portions 21b and 22a not shown cooperate with each other to hold the disk 100 such that the center of the disk 100 coincides with the point C2. In this position, the position of the disc receiving portion 25a is also shifted from the point C1 so that the disc receiving portion 25a receives the disc 100 without contacting the information recording surface (back surface) of the disc 100. The distance between point C1 and point C2 depends on the radius of the cylinder formed by side wall 12i and the radius of disk 100. With a 5 inch diameter disc 100, it is preferred that the distance between point C1 and point C2 be in the range of about 0.5mm to 1.5 mm. When the distance is smaller than this range, when the disk cartridge 322 is inserted into the disk drive apparatus and the disk 100 is rotated, the disk 100 may contact the side wall 12i due to surface deflection of the disk 100. When the distance between the point C1 and the point C2 is larger than about 1.5mm, the gap between the disk 100 and the side wall 12i of the disk storage unit is too large, and there is a possibility that more dust or dirt may accumulate in the gap, which is not preferable.
FIG. 136 shows the vicinity of the disk holder 22b in the L-L cross section of FIG. 132. As described in embodiment 20, since the inclined surface is provided on the upper surface 15K of the tray receiving portion 25a, the tray 100 is brought into close contact only with the side wall 25i (not shown) of the upper surface 15K of the tray receiving portion 25. In the case of the present embodiment, the upper surface 25K of the disk receiving portion 25a is parallel to the case lower body 11 in the vicinity of the side wall 25i, the 1 st shutter 21 and the 2 nd shutter 22 are in a closed state, and in the case where the disk 100 is held by the disk holding portions 21b, 22a, and 22b (not shown in the figure), the disk 100 is in contact with the disk receiving portion 25a at this portion. The inner circumference of the region 25b where the disk receiving portion 25a contacts the disk 100 is defined by a line 25 n.
As shown in fig. 132, a region 25b of the disk receiving portion 25a is located near the outer periphery of the disk 100 except for a portion where the notch 25c is provided. The inner circumference 25n of the region 25b is located on a circle having the point C2 as the center. On the other hand, the outer periphery of the region 25b is defined by the outer periphery of the disc 100. Accordingly, the region 25b is a region excluding a portion overlapping with the notch 25C from an annular region sandwiched by two concentric circles having the point C2 as the center.
The 1 st shutter 21 and the 2 nd shutter 22 (not shown) are closed, and when the disk 100 is held by the disk holding portions 21b, 22a, and 22b (not shown) of the 1 st shutter 21 and the 2 nd shutter 22, the center of the disk 100 is located at C2. Further, since the radii of curvature between the tray 100 and the side wall 12i 'are equal, the side surface of the tray 100 is completely in close contact with the side surface 12 i' at the position where the notch 12g is provided. That is, the center positions of the trays held by the tray holding portions 21b, 22a, and 22b are shifted from the center of the tray storage portion so that the outer side surfaces of the trays 100 abut against the side walls 12 i' to hold the trays.
On the other hand, when the 1 st shutter 21 and the 2 nd shutter 22 (not shown) are closed, the inner circumference of the area 25b where the disk receiving portion 25a and the disk contact each other is also offset from the center of the disk receiving portion. Thus, the information recording surface (back surface) of the disk 100 is in contact with the disk receiving portion in the vicinity of the outer periphery thereof, and the side surface of the disk 100 is in close contact with the side wall 12 i' in the notch 25c without the disk receiving portion 25 a.
On the other hand, in the vicinity of the center hole 100h, as described in embodiment 20, the disk 100 is in contact with the projections 21w and 22w provided on the 1 st shutter 21 and the 2 nd shutter 22. Accordingly, the information recording area of the disc 100 is completely cut off from the outside, and dust can be prevented from adhering to the information recording area of the disc 100.
Further, as shown in fig. 136 and 137, in the disk cartridge 322, a tapered portion 26c is provided in the bottom portion where the disk holding portion 22b of the 2 nd shutter 22 is provided, and a concave portion 11x is provided in a region where the disk holding portion 22b of the cartridge lower body 11 is located. Thereby, the thickness or diameter of the disk 100 fluctuates, and in the case where it is only larger than the specification value, as shown in fig. 137, the 2 nd shutter 22 is elastically deformed in the region 26b located at the x-end of the recess 11 of the cartridge lower body 11. Thus, the inclined portion 22 b' of the disk holding portion 22b is surely in contact with the edge of the outer periphery of the disk 100, and the 1 st shutter 21 and the 2 nd shutter 22 can surely hold the disk 100 without rattling. Further, the disk holding portion 22b applies a force to the disk 100 toward the center thereof by elastic deformation. As a result, as shown in fig. 132 and 134, the tray 100 is applied with a force to the side wall 12i ', and the adhesion to the side wall 12 i' on the side surface of the tray 100 is improved. Further, dust can be more reliably prevented from adhering to the information recording area of the disc 100.
In order to hold the disc 100 without any problem of fluctuation in thickness and diameter of the disc 100, when holding the disc 100 having a thickness and diameter that become the central value of the specification range, as shown in fig. 137, only the 2 nd shutter 22 may be designed to be elastically deformed; when the disc 100 having the thickness and the diameter of the lower limit value of the specification value is held, as shown in fig. 136, the 2 nd shutter 22 is designed so as to be hardly elastically deformed.
As described above, according to the present embodiment, dust can be prevented from adhering to the information recording area of the disc 100 without using the shield member 24. Therefore, the shield member 24 or a structure for interlocking the shield member with the rotation member 25 is not required, and the structure of the disk cartridge can be simplified.
(embodiment 23)
Hereinafter, embodiment 23 of the disk cartridge according to the present invention will be described.
Unlike a conventional disk cartridge, the disk cartridge of the present invention is configured to accommodate a disk by exposing one surface of the disk. Therefore, the thickness of the disk cartridge can be reduced, and the design of the entire disk cartridge can be made excellent by exposing the pattern recorded on the label surface of the disk.
However, in order to expose one side of the disk, the operator may touch the label surface of the disk, and the label surface may be inadvertently pressed depending on the manner of use of the operator. Even in this case, the disk cartridge is required to hold the disk so that no flaw is attached to the signal recording surface of the disk or the disk is not deformed. Thus, regardless of the type of the disk to be held, it is checked whether or not a flaw is not attached to the signal recording surface of the disk, and whether or not the signal recording surface is properly protected.
Fig. 138 shows a space to be provided below the signal recording area 100d so that, when the disc 100 is held by the holding structure 59 of the disc receiving portion or the like, the signal recording area 100d is in contact with the holding structure 59 without being scratched even when the disc 100 is pressed by the operator. In fig. 138, the holding structure 59 is shown in a partially enlarged size so that the features of the space can be clearly defined. Therefore, the ratio of the vertical and horizontal dimensions in the figure is different from the actual ratio.
In the case where a sufficient space is available below the disc 100, a space corresponding to the maximum bending amount of the disc 100 can be secured regardless of the way the disc 100 is bent. However, if such a disk cartridge is manufactured, its thickness becomes thick. In order to make the space to be provided under the disc as small as possible, it is first necessary to hold the disc 100 in such a manner that the curvature of the disc 100 is as small as possible. Therefore, it is preferable to hold the disc 100 at a portion as close as possible to the signal recording area 100 d. As shown in fig. 138, the holding structure 59 holds the signal recording surface 100A of the disc 100 at a portion from the center of the disc 100 to Rin and at an outer side from the center of the disc 100 to Rout. Here, Rin is defined as the distance from the point where the signal recording area 100d is close to the signal recording area 100d on the center side of the disc 100 to the center side of the disc 100. In addition, Rout is taken as the distance from the point at which the signal recording area 100d approaches the signal recording area 100d on the outer side of the disc 100 to the center of the disc 100. As described above, it is preferable that the point defining Rin and the point defining Rout are as close as possible to the signal recording area 100 d. Preferably, in the case of a disc 100 having a diameter of 5 inches (radius 60mm), Rin is 20mm and Rout is 59 mm.
The space 69b to be provided so as not to cause a flaw in the signal recording area 100d is determined as follows. First, the height (depth) of the space 69b is S. A circle 69d with a radius Rout on the signal recording surface 100A and a circle 69f with a radius Rout-16.2S on a plane separated from the signal recording surface 100A by a distance of 0.3S are defined. The circle defined by the circumference 69d and the circumference 69e is the upper and lower truncated cone side surfaces 59a, and the circle defined by the circumference 69e and the circumference 69f is the upper and lower truncated cone side surfaces 59 b.
Further, a circle having a radius Rin from the center of the disc 100 is defined as a bottom surface, and a side surface of a cylinder having a height (depth) S from the signal recording surface 100A is defined as 59 d. The region excluding the region inside the cylinder defined by the side surface 59d from the region of the truncated cone defined by the side surfaces 59a and 59b is the space 69b to be provided below the signal recording region 100 d.
Since the value of S defines the height of the space 69b, even if the disc 100 is bent to a large extent, a flaw is less likely to be formed in the signal recording region 100 d. However, if the value of S is large, the disk cartridge becomes thick. Therefore, in order to make a thin disk cartridge, the value of S is preferably small. From the experimental results, it is understood that the signal recording region 100d can be protected even if the value of S is 1mm as a countermeasure against a certain degree of warpage of the disc 100 caused by the operator pressing the disc 100 with his hand.
On the other hand, it is preferable that the fastening region 100e of the disc 100 is not in contact with the holding structure 250 in a region from Rin to the center side of the disc 100. In the magnetic disk drive apparatus for recording/reproducing the disk 100, the fastening area 100e is in contact with a turntable or a clamper. This is because if scratches or dust adhere to this area, the disk 100 cannot be securely clamped. The fastening area 100e is defined by an area sandwiched by two concentric circles of 22mm and 33mm in diameter corresponding to the center of the disk. Since the fastening area is an area only opposing the disk 100, the disk 100 is hardly bent above the fastening area 100e even if the operator presses the disk 100. Thus, if the space 69a in contact with the fastening region 100e is formed, the height (depth) of the space 69a may be any value.
Fig. 139 is a schematic view showing how the disc 100 deforms when a force pressing the disc 100 against the space 69b is applied to the disc 100 disposed in the space 69b, the space 69b having a value of S of 1mm being formed. From the results of the experiment, it is known that the force with which the operator presses the disc 100 by hand does not exceed 3 kg. Even if the disk 100 is bent to such an extent that it is sufficiently accommodated in the space 69b at this time, the bent disk 100 does not contact the side surfaces 59a and 59 b.
The space 69b defines a minimum necessary area for preventing scratches from being formed in the signal recording area 100d of the disc 100. Therefore, a larger area than the inclusion space 69b can also be formed below the signal recording area 100d of the disc 100. As shown in fig. 140 and 141, a space 69b may be formed beyond the side surfaces 59a and 59 b. However, in order to reinforce the strength of the portion of the outer periphery of the disc 100 holding the holding structure 59 for holding the disc 100, it is preferable to provide the adjacent reinforcement portion 59' or 59 ″ in the portion holding the outer periphery. The side surfaces 59a and 59b are useful in determining whether to allow such a reinforcing portion 59' or 59 ″ to have any shape.
A disk cartridge designed based on the above-described study will be specifically described. Fig. 142 is a plan view of a disk cartridge 322, and fig. 143 is a sectional view taken along line a-a of fig. 142. Fig. 144 is a perspective view showing a state in which the disk cartridge 323 is disassembled. In the disk cartridge 322, the same reference numerals are given to the same components as those of the disk cartridges of the 20 th to 22 th embodiments.
The disk cartridge 323 holds the disk 100 by bringing the disk 100 into contact with the side wall 12i of the cartridge upper body 12 without a shield member, as in embodiment 22.
Specifically, as shown in fig. 142 and 144, in a state where the 1 st and 2 nd shutter 21 and 22 are closed, the disk cartridge 323 holds the disk 100 by the disk holding portion 21b of the 1 st shutter 21 and the disk holding portions 22a and 22b of the 2 nd shutter 22. At this time, the side surface of the tray 100 is in contact with the side wall 12i of the cartridge upper body 12 in the region where the notch 25c of the rotating member 25 is located. Further, the center of the disc 100 coincides with the point C2. The inner circumference of the area where the disk receiving portion 25a of the rotating member 25 and the disk 100 are in contact with each other coincides with a circumference having the point C2 as the center so as to be in uniform contact with the 1 st surface 100A of the disk 100. On the other hand, the center of the side wall 25i of the rotating member 25 coincides with the point C1.
As shown in fig. 142 and 144, in the 1 st shutter 21 and the 2 nd shutter 22 of the magnetic disk 323, a convex portion 20w composed of convex portions 21w and 22w is formed around a hole 20h corresponding to the center hole of the disk 100. The convex portions 35d and 36d are provided at positions spaced apart from the convex portion 20w by a predetermined distance. The projections 35d and 36d are continuous projections 20d when the shutter is closed, and hold an area close to the signal recording area of the disc 100. The concave portion formed between the convex portion 20w and the convex portion 20d defines a space 69a, and when the tray 100 is held, the fastening region of the tray 100 is located in the space 69 a.
As shown in fig. 143, when the disk 100 is held, the protrusion 36d, the 2 nd shutter 22, and the disk receiving portion 25a of the rotation member 25 are designed below the disk 100 so as to secure the space 69b shown in fig. 138. Although not shown in fig. 143, the projection 35d and the 1 st shutter 21 are also designed in the same manner. The 1 st and 2 nd shutters 21 and 22 are designed to have a distance of 1mm or more from the disk 100. Further, the disk receiving portion 25a is located outside the space 69b shown in fig. 138. That is, the disk receiving portion 25a is located below the side surfaces 59a and 59b of the space 69b so as not to shield the space 69 b.
As described above, by securing the space 69b shown in fig. 138 below the disc 100, even if the operator presses the disc 100 stored in the disc cartridge 323, the signal recording area of the disc can be reliably protected.
In addition to this, in the disk cartridge 323 of the present embodiment, in order to improve the practicality, a structure in which the mechanical strength of the constituent members is improved, a structure in which two types of the drop preventing members can be attached, and a structure in which the dust preventing function is improved are adopted. These configurations are explained below.
First, a structure for improving the mechanical strength of the constituent members will be described. As shown in fig. 142 and 144, when the 1 st and 2 nd shutters 21 and 22 are closed, the disk holding portions 21a, 22a, and 22b apply a force to the disk 100 toward the center thereof by the elastic force due to the bending of the connecting portion between the 1 st shutter 21 and the disk holding portion 21b and the elastic force due to the bending of the connecting portion between the 2 nd shutter 22 and the disk holding portions 22a and 22b, respectively.
However, when the disk cartridge 323 is dropped or the operator applies a force to the surface 100B of the disk 100 to move the disk 100 inside the cartridge, a force that moves outward from the center of the disk 100 acts on the disk holding portions 21a, 22a, and 22B. When such a force is large, the connection portions between the 1 st and 2 nd shutters and the disk holding portions 21a, 22a, and 22b may be broken. In particular, a connection portion between the disk holding portion 21B and the 1 st shutter 21 and a connection portion between the disk holding portion 22B and the 2 nd shutter 22 are narrow, and in fig. 142, forces indicated by arrows 21B and 22B, respectively, are relatively weak.
Therefore, in the disk cartridge 323, the cross sections 65a and 65B defining the side walls 12i of the notches 25g and 25h of the pivot member 25 intersect the radial direction ( arrows 21B and 22B) of the disk 100, and are formed so as to face the disk storage portion 10 d. When the shutter is closed, the disk holding portions 21B and 22B are restricted from moving by the cross sections 65a and 65B so that the disk holding portions 21B and 22B do not move by a predetermined amount or more in the directions of arrows 21B and 22B, respectively.
By providing the cross sections 65a and 65b, even if the disk cartridge 323 falls down or the operator intentionally moves the disk holding portions 21b and 22b, the disk holding portions 21b and 22b can be prevented from being damaged. When the shutter is closed, even if a force acts to open the 1 st shutter 21 and the 2 nd shutter 22 for some reason, the disk holding portions 21b and 22b that move in accordance with the movement of the 1 st shutter 21 and the 2 nd shutter 22 come into contact with the cross sections 65a and 65 b. This hinders the opening operation of the 1 st shutter 21 and the 2 nd shutter 22. Therefore, when the shutter is closed, the wobbling of the 1 st shutter 21 and the 2 nd shutter 22 can be reduced.
Further, as shown in fig. 142, if the operator operates to open the 1 st and 2 nd shutters 21 and 22, the 1 st and 2 nd shutters 21 and 22 rotate about the rotation holes 37 and 38, respectively, and therefore, the side walls of the guide groove 27E of the 1 st shutter 21 and the side walls of the guide groove 28F of the 2 nd shutter 22 rotate the projection 25E and the projection 25F of the rotating member 25 in the directions of arrows 25E and 25F about the rotation holes 37 and 38, respectively.
At this time, the guide grooves 27E and 28F extend toward the arrows 25E and 25F, and if spaces in which the convex portions 25E and 25F can move in the directions of the arrows 25E and 25F, respectively, are located in the guide grooves 27E and 28F, the 1 st and 2 nd shutters 21 and 22 may shake.
Therefore, when the shutter is closed, the convex portions 25E and 25F are positioned at the ends of the guide grooves 27E and 28F, and extend in the directions of the arrows 27E and 28F substantially perpendicular to the arrows 25E and 25F (i.e., the directions connecting the convex portions 25E and 25F and the rotation shafts 37 and 38, respectively).
Further, as shown in fig. 144, a convex portion 33b is provided on the cartridge lower body 11, and a convex portion 25w is provided on the rotary member 25. Any one of the convex portions 33b and 25w has a height almost equal to that of the 1 st and 2 nd shutters 21 and 22. The convex portion 33b contacts the back surface of the disk receiving portion 25a of the rotary member 25, and the convex portion 25w contacts the concave portion 33c provided on the inner lower surface 11u of the cartridge lower body 11. The convex portions 33b and 25w prevent the rolling member 25 from bending and hold the rolling member 25 in the area not contacting with the 1 st shutter 21 and the 2 nd shutter 22 of the rolling member. Thus, the rotating member 25 is prevented from being bent and not adhering to the disk 100 in the region of the rotating member 25 not contacting the 1 st shutter 21 and the 2 nd shutter 22.
The disk holding portion 22a includes the 1 st region 122a and the 2 nd region 222a as described in embodiment 14, and the 1 st region 122a is higher than the 2 nd region 222 a. Further, the front end of the 1 st region 122a is inserted into a recessed region 12x provided on the inner upper surface of the cartridge upper body 12. The area 12x is provided along an area through which the leading end of the 1 st area 122a passes when the shutter opens and closes.
As shown in fig. 142 and 144, when the shutter is opened and closed, a magnetic head opening 11h is provided in a region where the disk holding portion 22a passes, and the magnetic head opening 11h reaches the side surface of the cartridge lower body 11. Therefore, when the cartridge main body is configured by bonding the cartridge lower body 11 and the cartridge upper body 12, it is necessary to secure strength as the cartridge main body only in the cartridge upper body 12 in the vicinity of the magnetic head opening 11 h.
According to the disk cartridge 323, as described in embodiment 14, when the shutter is closed, the 1 st area 122a of the disk holding portion 22a can securely hold the disk 100. Since the 2 nd region 222a of the disk holding portion 22a is low, the inner upper surface of the cartridge upper body 12 does not need to be thinned. Accordingly, even in the region where the disk holding portion 22a of the cartridge upper body 12 passes, the region where the thickness needs to be reduced is reduced, and the strength of the entire cartridge main body can be prevented from being reduced in the vicinity of the head opening 11 h.
Further, as described in embodiment 13, the disk cartridge 323 of the present embodiment has a structure providing rigidity in a state where the shutter is closed.
As shown in fig. 145 and 146, the 1 st shutter 21 and the 2 nd shutter 22 have joint portions butted against each other in a manner of overlapping in a thickness direction in discontinuous two regions separated by the hole 20 h. The 1 st shutter 21 having an engaging portion 21g 'and an engaging portion 21 f', and the 2 nd shutter 22 having an engaging portion 21g 'and an engaging portion 21 f'. The sectional view taken along the line N-N of FIG. 145 is shown on the upper side of FIG. 146, and the sectional view taken along the line O-O of FIG. 145 is shown on the lower side of FIG. 146. In the butting area between the engaging portion 21g 'of the 1 st shutter 21 and the engaging portion 22 g' of the 2 nd shutter 22, the engaging portion 21g 'of the 1 st shutter 21 is located downward with respect to the thickness direction of the shutters and the engaging portion 22 g' of the 2 nd shutter 22 is located upward at the time of shutter blocking. Further, in the abutting area between the engaging portion 21f 'of the 1 st shutter 21 and the engaging portion 22 f' of the 2 nd shutter 22, the engaging portion 21f of the 1 st shutter 21 is located above and the engaging portion 22f of the 2 nd shutter 22 is located below with respect to the thickness direction of the shutters at the time of shutter occlusion.
Further, the front end of the engaging portion 21 g' of the 2 nd shutter 22 is provided with a convex portion 38c along the abutting area, and a concave portion 37c which is engaged with the convex portion 38c is provided on the 1 st shutter 21 when the shutters are closed.
As shown in fig. 147, in a portion where the disk holding portion 22a of the 2 nd shutter 22 abuts against the convex portion 27a of the 1 st shutter 21, a protrusion 37a is provided on the convex portion 27a, and a concave portion 38a that fits the protrusion 37a is provided on the disk holding portion 22 a. A recess 37b is provided in an upper portion of the projection 37 a. In addition, a convex portion 38b that fits into the concave portion 37b is provided at an upper portion of the concave portion 38 a. The protrusion 37a and the recess 37b constitute a 3 rd engaging portion 37e of the 1 st shutter 21, and the recess 38a and the protrusion 38b constitute a 3 rd engaging portion 38e of the 2 nd shutter 22.
As described above, in the disk cartridge 323, the portion where the 1 st shutter 21 and the 2 nd shutter 22 are butted is two areas, and in each area, the joint portion of the 1 st shutter 21 and the 2 nd shutter 22 is butted in such a manner as to overlap in the thickness direction of the shutters. Also, in the two regions, the overlapping upper and lower relationship is reversed. With this structure, when the 1 st shutter 21 and the 2 nd shutter 22 are closed, the shutters can be prevented from being detached. Further, in a state where the 1 st shutter 21 and the 2 nd shutter 22 are closed, the rigidity of the joint portion can be improved.
Further, by providing the concave portion 37c and the convex portion 38c on the engaging portion 21g 'of the 1 st shutter 21 and the engaging portion 22 g' of the 2 nd shutter 22, respectively, in the case where the 1 st shutter 21 and the 2 nd shutter 22 are closed, the engaging portion 21g 'and the engaging portion 22 g' can be made not to be easily separated by shaking of the shutters or the like. Further, this can improve the degree of sealing between the 1 st shutter 21 and the 2 nd shutter 22, and also can improve the dust-proof effect around the joint portion.
Also, the rigidity of the joint between the 1 st shutter 21 and the 2 nd shutter 22 is increased by the 3 rd joint portion 37e of the 1 st shutter 21 and the 3 rd joint portion 38e of the 2 nd shutter 22 at the time of shutter closure. Further, since the convex portion 38b and the engaging portion 22g 'of the 2 nd shutter sandwich the continuing portion 21 g' and the protrusion 37b of the 1 st shutter, the rigidity of the engagement between the 1 st shutter 21 and the 2 nd shutter 22 can be further improved when the shutters are closed.
Next, a structure in which two types of drop prevention members can be attached will be described. As shown in fig. 144, the disk cartridge 323 has the rotation holes 12m and 12m 'in the cartridge upper body 12, and either the retaining member 55 or the retaining member 55' may be attached as a mechanism for preventing the disk 100 from coming off the disk opening 12 w. The drop preventing member 55 has the same structure as the drop preventing member 55 of the disk cartridge 321 described in embodiment 21. The rotation shaft 55a is inserted into the rotation hole 12m of the cartridge upper body 12, and the engagement allows the drop prevention member 55 to rotate about the rotation shaft 55 a. As described in embodiment 21, the disk 100 can be prevented from falling off by drawing a part of the drop preventing member 55 toward the disk opening 12w, or the disk 100 can be taken out by rotating the drop preventing member 55 to the position shown in fig. 125.
On the other hand, the drop preventing member 55 ' has a rotation shaft 55 ' a and a projection 55 ' b. When attached to the cartridge upper body 12, the rotation shaft 55 'a and the projection 55' b of the drop prevention member 55 'are fitted into the rotation hole 12m and the hole 12 m', respectively, and inserted. Since the drop-off preventing member 55 ' is fixed to the cartridge upper body 12 at two positions, the drop-off preventing member 55 ' is immovable, and a part of the drop-off preventing member 55 ' normally protrudes toward the disk opening 12 w. That is, when the drop preventing member 55' is attached to the cartridge upper body 12, the disc 100 accommodated in the disc cartridge 323 cannot be taken out.
As described above, by providing the rotation hole 12m and the hole 12m ' which can be engaged with both the drop preventing member 55 and the drop preventing member 55 ' as the engaging means on the cartridge upper body 12, it is possible to attach either the drop preventing member 55 or the drop preventing member 55 ' to the cartridge main body as necessary. Therefore, by selectively using either one of the drop prevention member 55 and the drop prevention member 55', it is possible to manufacture the disk cartridge 323 from which the disk 100 can be taken out and the disk cartridge 323 from which the temporarily stored disk 100 cannot be taken out.
Although the removal history hole 11n and the cover member 56 described in embodiment 21 are not shown in fig. 144, these may be provided in the disk case 323. When the removal history hole 11n and the lid member 56 are provided in the disk cartridge 323 and the drop prevention member 55 is attached, the lid member 56 drops when the drop prevention member 55 is rotated to remove the disk 100 as described in embodiment 21. This completely exposes the opening of the removal history hole 11 n. In the case where the drop prevention member 55' is installed in place of the drop prevention member 55, the disk 100 cannot be taken out by rotating the drop prevention member 55. Therefore, the cover member 56 still covers the opening of the removal history hole 11 n.
Next, a structure for improving the dust-proof effect will be described with reference to fig. 144, 145, 148, and 149. As shown in fig. 144, a convex portion 33a is provided around the chucking opening portion 11c and the head opening portion 11h of the cartridge lower body 11. In fig. 145, the convex portion 33a is indicated by a broken line. As shown in fig. 148, which is a cross-sectional view taken along line M-M of fig. 145, recesses 37d and 38d are provided on the back surfaces of the 1 st shutter 21 and the 2 nd shutter 22 so as to fit the projection 33 a.
The 1 st shutter 21 and the 2 nd shutter 22 move the cartridge lower body 11. Therefore, dust and the like attached to the back surfaces of the 1 st shutter 21 and the 2 nd shutter 22 are easily introduced into the case along with the movement of the 1 st shutter 21 and the 2 nd shutter 22. According to this configuration, dust entering between the cartridge lower body 11 and the 1 st and 2 nd shutters 21 and 22 from the chucking opening portion 11c and the magnetic head opening portion 11h can be prevented.
Further, as shown in fig. 149, in the vicinity of the hole 20h formed by the 1 st and 2 nd shutters 21 and 22, in a portion where the 1 st and 2 nd shutters 21 and 22 abut against each other, convex portions 36a and 36b are provided in the 2 nd shutter 22, and concave portions 35a and 35b that fit the convex portions 36a and 36b are provided in the 1 st shutter 21. The convex portions 36a and 36b of the 1 st shutter 21 protrude from the joint surfaces formed by abutting each other when the 1 st shutter 21 and the 2 nd shutter 22 are closed. This prevents dust from entering the hole 20h along the abutting surfaces of the 1 st shutter 21 and the 2 nd shutter 22.
In the present embodiment, since the space 69b shown in fig. 138 is provided below the disk 100, an example is shown in which a disk receiving portion for holding the disk 100 is provided in the rotating member. However, other configurations may be employed in order to provide the space shown in fig. 138 below the tray 100. For example, as shown in fig. 150, a disk receiving portion 25a 'for holding the outer peripheral end portion of the disk 100 may be provided in the cartridge upper body 12'. Even with this configuration, by selecting the shapes of the disk acceptance portion 25 a', the 1 st shutter 21, and the 2 nd shutter 22 in such a manner that the space 69b shown in fig. 138 is formed below the disk 100, a disk cartridge in which the signal recording surface does not contact the shutter or the disk acceptance portion can be realized even if the disk 100 is pressed by the operator.
(embodiment 24)
Hereinafter, a 24 th embodiment of the disk cartridge according to the present invention will be described. The disk cartridge of the present embodiment is different from the disk cartridge 323 of embodiment 23 in that a groove for collecting dust and the like to prevent dust and the like from adhering to the information recording surface 100A of the disk 100 is provided in the disk receiving portion 25a of the rotation member 25, and in that the disk holding portion has a structure capable of holding the disk 100 properly even when the disk cartridge is held vertically, in particular. Hereinafter, the difference from the disk cartridge 323 of embodiment 23 will be mainly described. The same reference numerals are given to the same components as those of the disk cartridge according to embodiment 23 or the previous embodiment.
Fig. 151 is a plan view showing a disk cartridge 324 of the present embodiment with the cartridge upper body 12 removed. Fig. 152 is a sectional view of the disk cartridge 324 including the cartridge upper body 12 taken along line a-a of fig. 151.
As shown in fig. 151 and 152, when the 1 st shutter 21 and the 2 nd shutter 22 are closed and the disk 100 is held by the disk holding portions 21b, 22a, and 22b, a groove 25p is provided on the outer side of the region 25b of the upper surface 25k of the disk receiving portion 25a of the rotating member 25, which is in contact with the disk 100. Although the cross section of the groove 25p is represented by a semicircle in fig. 152, the groove 25p may have other cross-sectional shapes such as a triangle or a rectangle as long as a recess that is more recessed than at least the region 25b in contact with the disc 100 is formed.
The region of the upper surface 25k of the disk receiving portion 25a where the groove 25p is provided is closed by the 1 st shutter 21 and the 2 nd shutter 22, and is not positioned below the disk 100 when the disk 100 is held by the disk holding portions 21b, 22a, and 22b, but is exposed to the outside at the bottom of the disk receiving portion. Therefore, in the use of the disk cartridge 324, dust may accumulate in this area. When the groove 25p is not provided in this region and the upper surface 25k is flattened, the accumulated dust and the like may adhere to the 2 nd surface 100A of the disk 100 and enter the lower space 69b of the disk 100.
In response to this, by providing the groove 25p in the upper surface 25k of the disk receiving portion 25a, dust and the like are accumulated in the bottom of the groove 25 p. Therefore, dust can be prevented from adhering to the tray 100A described above, or from entering the lower space 69b of the tray 100.
As described in detail with reference to fig. 132 and 142, when the 1 st and 2 nd shutters 21 and 22 are closed, the center of the disk 100 is aligned with a point C2 located at a position offset from the center C1 of the disk storage portion so that the disk 100 abuts against the side wall of the disk storage portion in the region where the notch 25C of the rotary member 25 is provided, and the disk 100 is held. Therefore, in the state where the disk 100 is held, the exposed portion of the upper surface 25k of the disk receiving portion 25a is defined by the circular side wall 12i of the disk storage portion centering on the point C1, not by a concentric circle centering on the point C1. The groove 25p includes at least a part of the region. The radius of the circle defining the disk storage section side wall 12i may be different in shape or size depending on the radius of the disk 100 and the distance between the points C1 and C2. However, this region has a crescent shape which is missing at least in the notch 25c portion of the rotating member 25.
The structure of the disk holding portion will be described next. Fig. 153 and 154 are plan views of the disk cartridge 324 after the disk 100 is stored, and fig. 153 and 154 show a state where the shutter is opened and a state where the shutter has started to be closed, respectively. In these figures, the rotating member 25 is indicated by a dotted line for easy observation. Since the positions of the convex portion 27a and the disk holding portions 21b, 22a, and 22b provided in the 1 st and 2 nd shutters 21 and 22 are clearly shown, all the portions of the 1 st and 2 nd shutters 21 and 22 are shown by solid lines.
When the 1 st shutter 21 and the 2 nd shutter 22 start to be closed from the state shown in fig. 153, as shown in fig. 154, the disk holding portion 22a provided in the 2 nd shutter 22 comes into contact with the disk 100 before the disk holding portions 21b and 22b, and the gripping operation starts. At this time, a part of the disk holding portion 22a is located below the drop preventing member 12s provided so as to protrude from the disk opening portion 12w, that is, located closer to the disk than the drop preventing member 12 s. In any posture of the disk cartridge 324, the disk 100 stored therein can be restricted by the drop prevention member 12s, and the disk holding portion 22a can be held in contact with the disk 100 without being moved to the outside of the disk storage portion beyond the drop prevention member 12 s. This structure is effective particularly when the disk cartridge 324 is supported vertically in the disk drive apparatus.
As described above, in the present embodiment, when a part of the disk holding portion 22a has moved downward of the drop prevention member 12s, gripping of the disk 100 is started. However, regardless of the posture of the disk cartridge 324, the disk holding portion 22a may not be positioned below the drop prevention member 12s when the disk holding portion 22a comes into contact with the disk 100, because the drop prevention member 12s restricts the position and posture range of the disk 100 in the disk storage portion so that the disk holding portion 22a can be held by the disk 100 by coming into contact with the disk 100. However, when the position of the drop prevention member 12s is separated from the position of the disk holding portion 22 when the disk 100 comes into contact, regardless of the posture of the disk cartridge, it is necessary to reduce the space in which the disk 100 can be located in the portion where the drop prevention member 12s is provided so that the disk holding portion 22a comes into contact with the disk 100. In this case, there is a case where it is difficult to take out the disc 100 from the disc cartridge 324. Therefore, the position of the disk holding portion 22 when the disk 100 comes into contact with is preferably close to the position of the drop prevention member 12s, and more preferably, when a part of the disk holding portion 22a has moved downward of the drop prevention member 12s as described above, gripping of the disk 100 is started.
When the 1 st shutter 21 and the 2 nd shutter 22 are further rotated from the state shown in fig. 154 to continue the shutter closing operation, the disk holding portions 21b and 22b approach the disk 100 to start disk gripping. At this time, depending on the posture of the disk cartridge 324, the disk 100 may protrude to such an extent that the disk holding portions 21b and 22b cannot come into contact with the disk 100 at a position where the disk holding portions 21b and 22b are close to the disk 100. In order to avoid such a problem, it is also conceivable to provide another drop prevention member at a position where the disk holding portions 21b and 22b should be in contact with the disk 100. However, if such a drop prevention member is provided, there is a possibility that it is difficult to take out the disc 100 from the disc cartridge 324. Therefore, in the present embodiment, in the disk holding portion 22a which is initially in contact with the disk 100, a configuration is provided in which the position and inclination of the disk 100 are changed so that the disk holding portions 21b, 22b can contact and hold the disk 100 after contact with the disk 100.
Fig. 155 to 157 are perspective views showing the disk holding portion 22a enlarged. As shown in the drawing, the disk holding portion 22a has a 1 st regulating surface 142a and a 2 nd regulating surface 142b as a structure for changing the position and the inclination of the disk 100. As described in detail in the embodiments above, the disk 100 is provided with a slope 22 a' for holding and fixing the disk 100. When the 2 nd shutter 22 is closed, the disk holding portion 22a moves in the direction of the arrow 140. The 1 st regulating surface 142a is disposed so as to be nonparallel to the arrow 140 which is the moving direction of the disk holding portion 22a, and is inclined in a reverse taper shape (on the 2 nd shutter 22 side) as viewed from the 2 nd shutter 22. As shown in fig. 155, the 1 st regulating surface 142a may contact the 1 st surface 100B of the disk 100 or an edge of the outer peripheral portion of the 1 st surface 100B. As shown in fig. 156, the 2 nd restricting surface 142B is almost parallel to the 2 nd shutter 22B and can be brought into close contact with the outer periphery of the 1 st surface 100B of the disk 100. The inclined surface 22 a' comes into contact with the 2 nd restriction surface 142b, and is inclined in a reverse taper shape (on the 2 nd shutter 22 side) as viewed from the 2 nd shutter 22. As shown in fig. 157, the inclined surface 22' a may contact an edge of the outer circumferential portion of the 1 st surface 100B of the disc 100.
Fig. 158 and 160 are perspective views illustrating a state in which the turntable and the clamper are separated from the disc 100, the shutter is closed, and the disc 100 is held by the disc holding portion, when the disc cartridge 324 is vertically supported in the disc drive apparatus. Fig. 159 and 161 are cross-sectional views taken along line Q-Q in fig. 158 and 160. With reference to these drawings and fig. 155 to 157, how the disk holding portion 22a restricts the posture of the disk 100 will be described. In fig. 158 and 160, the shutter is not shown.
As shown in fig. 158, in the case where the disk cartridge 324 is vertically supported in the disk drive apparatus, if the turntable and the clamper are detached from the disk 100 at the end of recording and/or reproducing the disk 100, the disk 100 is separated from the bottom of the disk housing and tiltably placed in the disk housing. In fig. 158, the drop preventing members 12s and 55 are omitted and the inclination of the disk 100 is exaggerated so that the posture of the disk 100 is more clearly defined for the sake of explanation, but in reality, the disk 100 is housed in the disk housing portion at least in the portions of the drop preventing members 12s and 55 because the drop preventing members 12s and 55 exist.
In this case, if the shutter closing operation is started and the disk holding portion 22a moves in the direction of the arrow 140, a part of the disk holding portion 22a moves downward of the drop preventing member 12s (fig. 159) as described above. As shown in fig. 155, the 1 st regulating surface 142a of the disk holding portion 22a contacts the 1 st surface 100B of the disk 100 or the edge of the outer peripheral portion of the 1 st surface 100B. The 1 st restriction surface 142a guides the disk 100, and the inclination of the disk is changed so that the disk 100 is positioned between the 2 nd restriction surface 142b and the 2 nd shutter 22 (or the bottom of the disk storage portion). At this time, as shown in fig. 158, the disk holding portions 21B and 22B are not moved yet at the positions where they contact the disk 100, but as shown in fig. 159, the disk 100 is tilted to such an extent that the inclined surface 22B' of the disk 22B does not contact the edge of the 1 st surface 100B of the disk 100.
If the movement in the direction of the arrow 140 of the disk holding portion 22a is advanced, the disk 100 is restricted by the 2 nd restricting surface 142b as shown in fig. 156, and its inclination is corrected so that the disk 100 becomes vertical as shown by the arrow 141 in fig. 158. Therefore, as shown in fig. 160 and 161, the disk 100 is almost parallel to the bottom of the disk storage portion, and the disk 100 is brought close to the bottom side of the disk storage portion so that the inclined surface 22B 'of the disk holding portion 22B (and the inclined surface 21' B of the disk holding portion 21B) can contact the edge of the outer periphery of the 1 st surface 100B of the disk 100.
If the rotation of the shutter is further advanced, as shown in fig. 157, the inclined surface 22 a' of the disk holding portion 22a contacts the edge of the 1 st surface 100B of the disk 100. The inclined surfaces 21B 'and 22B' of the disk holding portions 21B and 22B also contact the edge of the 1 st surface 100B of the disk 100. This causes the disk 100 to be held by the disk holding portions 21b, 22a, and 22 b. The holding operation by the inclined surfaces 22a ', 21b ', 22b ' is described in detail in the embodiments so far, and therefore, the description thereof is omitted.
As described above, according to the present embodiment, even in the case of vertically supporting the disk cartridge 324, the accommodated disk 100 can be surely held by the disk holding portions 21b, 22a, 22b without falling off from the disk opening portion 12 w.
Although the disk holding operation when the disk cartridge 324 is vertically supported so that the side surface close to the disk holding portion 21b is positioned downward has been described above, the disk 100 can be reliably held by the same operation when the disk cartridge 324 is vertically supported so that the side surface close to the disk holding portion 22b is positioned downward.
In the case where the disk cartridge 324 is held horizontally in the disk drive apparatus, as described in the embodiments so far, the disk 100 is held by the inclined surfaces 22 ' a, 21b ' of the disk holding portion 21b, and 22b ' of the disk holding portion 22b, without contacting the 1 st and 2 nd regulating surfaces 142a and 142b of the disk holding portion 22 a.
The configuration of changing the position and inclination of the disk provided in the disk holding portion 22a is not limited to the shape shown in fig. 155 and the like. If there are a 1 st regulating surface for guiding the disk in contact with the 2 nd regulating surface in contact with the disk having a large inclination or having a large distance from the disk storage portion, and a 2 nd regulating surface for changing or regulating the position and inclination of the disk in such a manner that the disk can be gripped by the disk holding portions 21b, 22a, 22b in contact with the inclined surfaces 22a ', 21b ', 22b ' of the disk holding portions 21b, 22a, 22b, the configuration for changing the position and inclination of the disk may include surfaces other than the 1 st and 2 nd regulating surfaces.
(embodiment 25)
Hereinafter, a 25 th embodiment of the disk cartridge according to the present invention will be described. The disk cartridge of the present embodiment has a structure that improves the practicability by improving the strength in use, the operability, and the like.
Fig. 162 is a perspective view showing a state in which the disk cartridge 325 of the present embodiment is disassembled. The same components as those of the disk cartridge of embodiment 23 are denoted by the same reference numerals in the disk cartridge 325. As shown in fig. 162, in the disk cartridge 325, the claw portion 25q is provided on the convex portion 25e so that the convex portion 25e of the rotating member 25 engaged with the guide groove 27e of the 1 st shutter 21 does not fall off from the guide groove 27 e. Similarly, a claw portion 25r is provided at the tip of the convex portion 25 f.
The 2 nd shutter 22 is provided with a projection 36 and a projection 48 which project into the center hole 100h of the disk when the 1 st and 2 nd shutters 21 and 22 are in the closed state.
On a cartridge lower body 11 constituting a cartridge main body, a rotational member receiving portion 11z is provided. The rotating member receiving portion 11z is in contact with a part of the bottom of the rotating member 25 when the 1 st and 2 nd shutters 21 and 22 are in the open state, and holds the rotating member 25.
In addition, a recess 11y is provided in the cartridge lower body 11 in a region where the disk receiving portion 25a of the rotary member 25 overlaps with the 1 st shutter 21 when the 1 st and 2 nd shutters 21, 22 perform the releasing operation.
Further, the case lower body 11 has a 1 st projection 49a and a 2 nd projection 49b near the magnetic head opening 11h, and when the 1 st and 2 nd shutters 21 and 22 are in a closed state, the 1 st shutter 21 and the rotary member 25 have a 1 st projection 63a and a 2 nd projection 63b which abut against the 1 st projection 49a and the 2 nd projection 49b of the case lower body 11, respectively.
These features are explained in the following. Fig. 163 is a plan view showing the top surface of the disk cartridge 325 with the cartridge upper body 12 and the drop prevention member 55 removed therefrom, and fig. 164 is a cross-section taken along line R-R of fig. 163. The cross section of R '-R' of the convex portion 25f having the claw portion 25R also has the same structure.
As shown in these figures, a claw portion 25q is provided on the front end of the convex portion 25e of the rotary member 25, and the claw portion 25q is located between the cartridge lower body 11 and the 1 st shutter 21. The claw portion 25q extends in the radial direction of the disk (the direction toward the center of the cartridge) as the direction of the R-R section shown in fig. 163. The claw portion 25q may extend in other directions. When the claw portion 25q is formed to extend only in the radial direction toward the center of the disk, there is an advantage that the rotating member 25 can be easily manufactured by molding with a die.
As shown in fig. 164, a slope 25 q' facing the disc opening portion may be provided at a connection portion between the claw portion 25q and the projection 25 e. The strength of the joint portion of the convex portion 25e and the claw portion 25q can be enhanced by providing the inclined portion 25 q'. In the case where the inclined portion 25q ' is provided, the inclined portion 21 ' is also provided at a portion of the 1 st shutter 21 opposite to the inclined portion 25q ' in the vicinity of the guide groove 27 e.
In the inside lower face 11u of the cartridge lower body 11, a groove 11 e' is provided which receives the leading end of the projection 25e of the setting claw portion 25 q. Since the area of the inner lower surface 11u facing the front end of the projection 25 is increased by providing the claw 25q, the width of the groove 11 e' is larger than the width of the groove 11e of the disk cartridge according to embodiment 23.
When the disk cartridge 325 is manufactured, an insertion opening 27 e' having a groove with a larger width is provided at one end of the guide groove 27e so that the convex portion 25e having the claw portion 25q is easily inserted into the guide groove 27 e. The loading port 27 e' is provided in a region other than the portion where the projection 25e of the rotating member 25 is located in the state where the 1 st and 2 nd shutters 21 and 22 are closed. Preferably, the insertion portion 27 e' is provided at one end of the guide groove 27e positioned at the convex portion 25e when the 1 st and 2 nd shutters 21 and 22 are in the opened state.
As described above, the protruding portions 25e and 25f of the rotating member 25 can be prevented from coming off the guide groove 27e of the 1 st shutter 21 and the guide groove 27f of the 2 nd shutter 22 by providing the claw portions 25q and 25 r. In particular, when the disk 100 is held by the disk holding portions 21b, 22a, and 22b when the 1 st and 2 nd shutters 21 and 22 are in the closed state, a strong load and impact are applied to the 1 st and 2 nd shutters 21 and 22 through the disk holding portions 21b, 22a, and 22b by increasing the impact such as a drop impact to the disk cartridge 325. In this case, the protruding portions 25e and 25f of the rotating member 25 can be effectively prevented from coming off the guide grooves 27e and 27 f. Therefore, the disk cartridge 325 having a high drop impact resistance and high practicability can be obtained.
In the present embodiment, the claw portions 25q and 25r are provided on both the convex portions 25e and 25f, but the claw portions 25q and 25r may not be provided when the possibility that the convex portions 25e or 25f may fall off from the guide grooves 27e or 27f is low even if the claw portions 25q or 25r are not provided, such as depending on the positions of the convex portions 25e and 25f in the rotating member 25 or the distances between the disk holding portions 21b, 22a, and 22 b. That is, the claw portion may be provided only on one of the convex portion 25e and the convex portion 25 f.
Next, a projection projecting into the center hole 100h of the opposing disk 100 will be described with reference to fig. 165. Fig. 165 is a plan view showing the top surface of the disk cartridge 325 with the cartridge upper body 12 and the drop prevention member 55 removed, and shows a state where the 1 st and 2 nd shutters 21 and 22 are opened, as in fig. 163.
As shown in fig. 165, the 1 st shutter is provided with a projection 35, as in the 21 st embodiment or the 23 rd embodiment. On the other hand, on the 2 nd shutter 22, in addition to the projection 36, a projection 48 is formed. The projection 35 projects from the upper surface of the convex portion 21w of the 1 st shutter 21, and the projections 36 and 48 project from the upper surface of the convex portion 22 w. Further, when the 1 st and 2 nd shutters 21 and 22 are in the closed state, the protrusions 35, 36 and 48 are positioned on the inner side of the hole 20h formed by the 1 st and 2 nd shutters 21 and 22. Since the hole 20h is provided so as to overlap the center hole 100h of the disk 100 when the 1 st and 2 nd shutters 21 and 22 are in the closed state, the projections 35, 36 and 48 project into the center hole 100h of the disk 100 and the projections 21w and 22w hold the vicinity of the center hole 100h of the disk 100 when the 1 st and 2 nd shutters 21 and 22 are in the closed state.
When the 1 st and 2 nd shutters 21 and 22 start the opening operation, the projections 35, 36 and 48 move from the inside of the center hole 100h of the disk 100 to the outer peripheral side of the disk 100. Therefore, the upper surfaces of the projections 35, 36, and 48 are held in contact with the disk 100 so as to lift the disk 100. At this time, the projections 35, 36, 48 contact the non-signal recording area indicated by 100e on the signal recording surface 100A of the disc 100. Since the projections 35, 36, 48 project further than the projection portions 21w, 22w, the projection portions 21w and 22w are brought into a state of non-contact with the signal recording surface 100A by the signal recording surface 100A coming into contact with the projections 35, 36, 48. This prevents the protruding portions 21w and 22w or the protruding portions 35d and 36d from coming into contact with the signal recording surface 100A, particularly the signal recording region.
Further, the 3 projections 35, 36, 48 are in contact with the disc 100, so that the disc 100 can be stably held without being tilted, and the signal recording area of the signal recording surface 100A can be surely prevented from being in contact with the 1 st and 2 nd shutters 21, 22.
As shown in fig. 165, in the state where the 1 st and 2 nd shutters 21 and 22 are completely opened, any of the projections 35, 36 and 48 stops in the non-signal recording area indicated by 100e of the signal recording surface 100A. Therefore, there is no possibility that the projections 35, 36, 48 contact the signal recording area of the signal recording surface 100A.
When the 1 st and 2 nd shutters 21 and 22 are closed, the 1 st and 2 nd shutters 21 and 22 also move in a state where the projections 35, 36 and 48 lift the disk 100. Therefore, the convex portions 21w, 22w or the convex portions 35d, 36d are prevented from contacting the signal recording region of the signal recording surface 100A.
Therefore, when the 1 st and 2 nd shutters 21 and 22 are opened and closed, the 3 projections 35, 36 and 48 are used, so that the disk 100 can be held in a substantially parallel manner with respect to the bottom of the disk storage portion or the 1 st and 2 nd shutters 21 and 22, and the disk 100 can be lifted. Therefore, the signal recording area of the signal recording surface 100A can be surely prevented from contacting the 1 st and 2 nd shutters 21 and 22.
Next, the rotating member receiving portion 11z will be described with reference to fig. 166 to 171. Fig. 166 and 168 are plan views showing the top surface of the disk cartridge 325 with the cartridge upper body 12 and the drop preventing member 55 removed, similarly to fig. 163. Fig. 166 shows a state where the 1 st and 2 nd shutters 21 and 22 are closed, and fig. 168 shows a state where the 1 st and 2 nd shutters 21 and 22 are opened. Fig. 167 and 169 show S-S sections of fig. 166 and 168, respectively.
The rotary member receiving portion 11z is adjacent to the head opening 11h of the lower case 11, and has a slope 11 z' facing the disk opening and provided on the inner lower surface 11u of the lower case 11. The side surface 11a of the case lower body 11 provided with the head opening 11h is formed so as to extend a little to the chucking opening 11c side along the head opening 11h, and is connected to the rotating member receiving portion 11 z.
As shown in fig. 166, in the state where the 1 st and 2 nd shutters 21 and 22 are closed, the projection 27a of the 1 st shutter 21 is positioned in the vicinity of the rotating member receiving portion 11 z. Therefore, as shown in fig. 167, the rotating member receiving portion 11z contacts the convex portion 27a of the 1 st shutter 21. The projection 27a of the 1 st shutter 21 is provided with a slope 27a 'corresponding to the slope 11 z' of the rotating member receiving portion 11 z. At this time, the rotary member 25 is positioned on the 1 st shutter 21 so as not to contact the rotary member receiving portion 11 z.
On the other hand, as shown in fig. 168, in a state where the 1 st and 2 nd shutters 21 and 22 are opened, the 1 st shutter 21 is located apart from the head opening portion. The 1 st shutter 21 is not located near the rotating member receiving portion 11 z. Therefore, as shown in fig. 169, a space S1 indicated by hatching is created between the inside lower face 11u of the cartridge lower body 11 and the bottom face of the rotary member 25.
However, the corner 25i 'of the bottom of the side wall 25i of the rotating member 25 abuts against the inclined surface 11 z' of the rotating member receiving portion 11z, so that the space S1 is formed, but the rotating member receiving portion 11z holds the rotating member 25 at a predetermined height. Thereby, the distance L1 between the lower face of the bridge portion 25v across the side wall 25i of the cutout 25c provided in the rotary member 25 and the back face of the box lower body 11 can be ensured particularly surely.
This effect is further described with reference to fig. 170 and 171. Fig. 170 and 171 show a T-T section in fig. 168, fig. 170 shows a section of the present embodiment having the rotating member receiving portion 11z, and fig. 171 shows a section of the cartridge without the rotating member receiving portion 11 z.
As described above, in the state where the 1 st and 2 nd shutters 21, 22 are opened, since the 1 st shutter 21 is at a position separated from the head opening portion 11h, the space S1 is created on the lower case body 11 in the vicinity of the head opening portion 11h on the 1 st shutter 21 side. As shown in fig. 171, in the case where the rotating member receiving portion 11z is not provided, a part of the disk receiving portion 25a of the rotating member 25 may be deformed to enter the space S1 in accordance with the bending of the rotating member 25 or the like. At this time, the bridge portion 25v of the side wall 25i hangs down in the head opening 11 h. As shown in fig. 171, if the bridge portion 25v hangs down on the head opening 11h, the optical head accessing the disk 100 interferes with the bridge portion 25v, and the optical head may not operate correctly.
In contrast, when the rotating member receiving portion 11z is provided as shown in fig. 170, the rotating member 25 is held by the rotating member receiving portion 11z as described above, and thus a part of the disk receiving portion 25a can be prevented from entering the space S1. Accordingly, the bridge 25v is prevented from hanging down in the head opening 11h, and a space for the photoelectric sensor to access the disk 100 can be secured.
Next, the recess 11y provided in the cartridge lower body 11 will be described. Fig. 172 and 174 are plan views showing the top surface of the disk cartridge 325 with the cartridge upper body 12 and the drop prevention member 55 removed therefrom, in which fig. 172 shows a state in which the 1 st and 2 nd shutter 21 and 22 are in the process of the opening operation, and fig. 174 shows a state in which the 1 st and 2 nd shutter 21 and 22 are opened. FIG. 173 shows the U-U cross-section of FIG. 172.
As shown in fig. 172 and 174, the recess 11y is provided on the inside lower face 11u of the cartridge lower body 11. The recess 11y is provided in a region where the notch 25c of the rotary member 25 passes and the disk receiving portion 25a overlaps the 1 st shutter 21 when the 1 st and 2 nd shutters 21 and 22 are closed and opened. The recess 11y includes a portion located below at least a region where the 1 st shutter 21 overlaps the disk receiving portion 25a, and preferably has a sufficient area and depth so that the 1 st shutter 21 is bendable on the inner lower face 11u side. In fig. 172, although the recess 11y has a trapezoidal shape with rounded corners, the recess 11y may have a rectangular shape or another shape.
When the 1 st and 2 nd shutters 21 and 22 perform the opening or closing operation, the vicinity of the leading end of the 1 st shutter 21 overlaps the disk receiving portion 25a in the open state and the closed state, but passes below the notch 25c provided in the disk receiving portion 25a in the middle of the opening operation and the closing operation. At this time, if the 1 st shutter or the rotation member 25 is bent or its thickness fluctuates, the disk acceptance portion 25a is temporarily lifted from the inner lower face 11u of the cartridge lower body 11. When the disk is overlapped with the disk receiving portion 25a again, the 1 st shutter 21 may contact the disk receiving portion 25a, and large friction may occur. In contrast, when the recess 11y is provided, as indicated by the two-dot chain line in fig. 173, the 1 st shutter 21 is deformed so that a part thereof enters the space S2 formed by the recess 11y, whereby contact with the disk receiving portion 25a of the rotating member 25 or friction caused by the contact can be reduced.
According to this structure, during the opening and closing operation of the shutter, the load such as friction between the rotary member 25 and the 1 st shutter 21 is reduced, and the rotary operation of the rotary member 25 and the opening and closing operation of the shutter by the movement of the rotary member 25 can be smoothly performed. Therefore, the operability of the disk cartridge 325 can be improved.
In the present embodiment, the recess 11y is provided in the region of the inner lower surface 11u through which the 1 st shutter 21 passes, but a configuration may be considered in which a part of the 2 nd shutter 22 passes through the notch 25c of the rotating member 25 as the shutter is closed and opened, depending on the rotating direction of the rotating member 25. In this case, the recess 11y may be provided in the area of the inner lower face 11u through which the 2 nd shutter 22 passes.
Next, a structure for preventing the wobbling of the 1 st and 2 nd shutters 21 and 22 and the rotating member when the shutters are in the closed state will be described. Fig. 175 is a plan view showing the top surface of the disk cartridge 325 with the cartridge upper body 12 and the drop prevention member 55 removed therefrom, and fig. 176 is an enlarged plan view showing a part thereof, similar to fig. 163.
As shown in fig. 175 and 176, the case lower body 11 is provided with a 1 st projection 49a and a 2 nd projection 49b adjacent to the head opening 11h and projecting toward the case center side. The 1 st projection 49a and the 2 nd projection 49b are connected to the side wall 11a of the box lower body 11. On the other hand, when the 1 st and 2 nd shutters 21 and 22 are in the closed state, the 1 st and 2 nd projections 63a and 63b that engage with the 1 st and 2 nd projections 49a and 49b, respectively, are provided on the projection 27a of the 1 st shutter and the side wall 25i of the rotation member 25.
The 1 st projection 63a of the 1 st shutter 21 and the 1 st projection 49a of the lower case 11 abut against each other when the 1 st shutter 21 moves in the direction of the arrow 22A, restricting the movement of the 1 st shutter 21. In addition, the 2 nd projection 63b of the rotary member 25 and the 1 st projection 49b of the cartridge lower body 11 abut against each other when the rotary member 25 moves in the direction of the arrow 21A, restricting the rotation of the rotary member 25. The movement of the 2 nd shutter 22 in the direction 21A can also be restricted by restricting the movement of the rotating member 25 in the direction of the arrow 21A.
Referring to fig. 142, in embodiment 23, the end portions of the guide groove 27E provided in the 1 st shutter 21 and the guide groove 28F provided in the 2 nd shutter 22 extend in the directions of arrows 27E and 28F perpendicular to the moving directions (25E and 25F) along with the convex portion 25E of the 1 st shutter 21 and the convex portion 25F of the 2 nd shutter 22, which are respectively engaged with the guide groove 27E and the guide groove 28F, in accordance with the opening operation of the shutters when the shutters are closed. Therefore, the 1 st shutter 21 is restricted from moving in the direction of the arrow 21A, and the 2 nd shutter 22 is restricted from moving in the direction of the arrow 22A.
Therefore, the 1 st shutter 21 and the 2 nd shutter 22 are restricted from moving in the direction of the arrow 21A or in the direction of the arrow 22A according to these structures, and the shaking of the 1 st shutter 21 and the 2 nd shutter 22 in the state where the shutters are closed is prevented. Further, since the 1 st and 2 nd shutters 21 and 22 can maintain the normal positions without rattling, the disk can be held properly by the disk holding portion 21b of the 1 st shutter 21 and the disk holding portions 22a and 22b of the 2 nd shutter 22.
At this time, the turning member 25 is restricted so as not to turn in the direction of the arrow 21A, but can turn in the direction of the arrow 22A. Therefore, by rotating the rotating member 25 in the direction of the arrow 22A, the shutter 2 can be opened.
As shown in fig. 175, in addition to the above-described structure, a lock 44 for fixing the rotating member 25 may be provided so as not to perform the shutter opening operation for rotating the rotating member 25 in the shutter closed state. For example, the lock 44 includes an elastic portion 44b, an arm portion 44c, a claw portion 44d provided at the tip of the arm portion 44c, and an operation portion 44 f. The lock 44 is supported by the rotating shaft 44a on the box lower body 11, and swings about the rotating shaft 44a as a shaft by pressing the operating portion 44 f. The operation portion 44f protrudes from an opening 11 r' provided in the cartridge lower body 11. Further, the elastic portion 44b abuts the side wall 11 a.
The rotary member 25 is provided with an opening 25s to be engaged with the claw portion 44d of the arm portion 44c in a state where the shutter is closed. Instead of the opening 25s engaged with the claw portion 44d, a groove engaged with the claw portion 44d may be provided.
As shown in fig. 175, in the state where the shutter is closed, since the claw portion 44d of the lock 44 is fitted to the opening 25s of the rotating member 25, the rotating member 25 is restricted so as not to rotate in either the direction of the arrow 21A or the direction of the arrow 22A. When the lock is released, the rotating member 25 is rotated in the direction of the arrow 22A while the operating portion 44f is pressed. Thereby, the engagement between the opening 25s of the rotating member 25 and the claw portion 44d of the lock 44 is disengaged, and the rotating member 25 rotates.
By designing the lock 44 having such a configuration, the rotation of the rotation member 25 in the direction of the arrow 21A and the direction of the arrow 22A is restricted in the state where the shutter is closed. Thus, in addition to the effects of the above-described structure, when the shutter is closed, the wobbling of the 1 st and 2 nd shutters 21 and 22 and the wobbling of the rotary member 25 can be prevented, and the disk can be more surely held.
(embodiment 26)
Hereinafter, a 26 th embodiment of the disk cartridge according to the present invention will be described. The disk cartridge according to the present embodiment also has a structure that improves the practicability by improving the strength, dust resistance, and the like in use.
Fig. 177 is a perspective view showing a state in which the disk cartridge 326 of the present embodiment is disassembled. In the disk cartridge 326, the same components as those of the disk cartridge according to embodiment 25 or the previous embodiments are denoted by the same reference numerals. As described below, in the disk cartridge 325, the drop-off preventive member 34 has a structure that can be easily attached to the upper surface of the cartridge main body 10, is difficult to be taken out from the cartridge main body 10 after attachment, and is held on the cartridge main body 10 without rattling.
The rotating member 25 has a structure in which even if the disk 100 moves in the disk holding portion when the shutter is opened, it is difficult for scratches to adhere to the information recording area of the disk 100. In this case, the portion exposed from the head opening of the rotating member 25 is less likely to be deformed.
The disk holding portions 21b and 22b provided in the shutters 21 and 22 have a structure in which the disk cartridge 326 is not easily ejected from the disk cartridge 326 by impact even when the disk cartridge 326 is dropped in a state in which the disk is stored. The shutters 21 and 22 and the rotation member 25 also have a structure in which a flaw is generated on the information recording surface of the disk 100 by the impact of the fall.
Further, the disk cartridge 326 has a structure in which dust or dirt is hard to enter the cartridge body 10 from the head opening 11h and the chucking opening 11c, and the dust or dirt is hard to adhere to the information recording surface 100A of the disk 100.
In the disk cartridge 326 of the present embodiment, the rotary member 25 includes an operating portion 25j including a pair of concave portions provided on the cylindrical side surfaces thereof and a gear portion sandwiched between the concave portions. When opening and closing the shutters 21 and 22 of the disk cartridge 326, the shutter opening and closing mechanism having a pair of convex portions and a gear portion engaged with the pair of concave portions and the gear portion of the rotary member 25 is used to rotate the rotary member 25. The disk cartridge 326 has a locking member 98 having a convex portion that fits with one concave portion of the rotating member 25. When the shutter is in the closed state, the convex portion of the lock member 98 engages with the concave portion of the rotation member 25, and the rotation member 25 rotates to prevent the shutter from operating. Further, as shown in fig. 177, the disk cartridge 326 may also have a slide member 99 for judging the kind of disk. By moving the slide member 99, the hole (recess) provided at a predetermined position on the back surface of the cartridge main body 12 can be closed. This position can be used for judging the type of disc or for write protection.
The structure for improving the above-described utility will be described in detail. First, the structure of the drop preventing member 34 and the cartridge upper body 12 to which the drop preventing member 34 is attached will be described. Fig. 178 is a perspective view showing the drop prevention member 34 and the vicinity of the region where the drop prevention member 34 is attached in a state where the drop prevention member 34 is removed. As shown in fig. 178, the drop-preventing member 34 has a pair of fitting pins 34a, 34a ', and a pair of positioning pins 34b, 34 b'. In the region of the drop prevention member 34 of the mounting box upper body 12, a recess 12k is formed, and at the bottom of the recess 12k, a pair of fitting holes 64c, 64c 'into which the fitting pins 34a, 34 a' are inserted and positioning holes 64d, 64d 'into which the positioning pins 34b, 34 b' are inserted are formed. In a state where the drop preventing member 34 is attached to the cartridge upper body 12, a part 34d of the drop preventing member 34 protrudes toward the disk opening 12w, and the disk 100 is prevented from dropping from the disk opening 12 w.
Fig. 179 shows a cross section of positioning hole 64d and fitting hole 64c of upper case 12 across upper case 12. In fig. 179, only the positioning hole 64d and the fitting hole 64c are shown, but the positioning hole 64d 'and the fitting hole 64 c' also have the shapes shown in fig. 179. As shown in fig. 179, the positioning hole 64d and the fitting hole 64c are restricted by the inner side surfaces of the boss 64a and the boss 64b extending from the cartridge upper body 12 toward the 1 st direction of the cartridge lower body 11, respectively, and the positioning hole 64d and the fitting hole 64c also extend toward the 1 st direction. As shown in fig. 179, the inner diameter of positioning hole 64d is almost equal to the outer diameter of positioning hole 34 b. Therefore, in a state where the positioning hole 34b is inserted into the positioning hole 64d, almost no gap is generated between the positioning hole 34b and the positioning hole 64d, and the positioning hole 64d holds the positioning pin 34b so that the positioning hole 34b does not move in the direction perpendicular to the 1 st direction.
The 1 st engaging portion 34c is provided at the tip of the engaging pin 34a of the drop preventing member 34. In the present embodiment, the 1 st engaging portion 34c has a large claw shape toward the outside of the engaging pin 34 a. Although the engagement pin 34a is formed of a material having elasticity, the engagement hole 64c is formed slightly larger than the outer shape of the engagement hole 34a so as to be able to press the inside of the large engagement portion 34c to the outside and to be narrowed, and to be smoothly inserted into the engagement hole 64 c.
If the engagement pin 34a is inserted into the engagement hole 64c defined by the boss 64a, the engagement portion 34c projects toward the front end of the boss 64 a. Thereby, the engaging portion 34c and the boss 64a are engaged so that the engaging pin 34a does not move in the 1 st direction. That is, the tip of the boss 64a becomes the 2 nd engagement portion that engages with the 1 st engagement portion. In the present embodiment, the 1 st engaging portion 34c in the shape of a claw is engaged with the 2 nd engaging portion which is the tip of the boss 64a, but the 1 st engaging portion 34c and the 2 nd engaging portion may be formed by other structures. For example, the 1 st engagement portion 34c may be a recess provided on the side surface of the engagement pin 34a, and the 2 nd engagement portion may be a boss formed on the inner side surface of the predetermined engagement hole 64 c.
As described above, according to the present embodiment, the position of the drop prevention member 34 can be determined in the direction perpendicular to the 1 st direction by the positioning pins 34b and 34b 'and the positioning holes 64d and 64 d'. The engagement pins 34a and 34a 'and the engagement holes 64c and 64 c' can determine the position of the drop prevention member 34 in the 1 st direction. Therefore, the drop preventing member 34 is difficult to move in either direction, and the drop preventing member 34 can be attached to the cartridge upper body 12 without rattling. Since the attached drop prevention member 34 is fixed without shaking, the drop prevention member 34 is not detached or bent even if an external force is applied to pull the drop prevention member outward.
Further, since the engagement pin 34a, the engagement hole 64c, and the engagement pin 34a have engagement structures for restricting movement in the 1 st direction, the engagement hole 64c may be slightly larger than the engagement pin 34 a. On the other hand, since no engaging portion is provided in the positioning pin 34b and the positioning hole 64d that restrict movement in the direction perpendicular to the 1 st direction, the positioning pin 34b is easily inserted into the positioning hole 64 d. Therefore, according to the above configuration, the drop prevention member 34 can be easily mounted on the cartridge upper body 12.
As described above, the above effects are exhibited if at least one of the positioning pin, the positioning hole, and the combination of the fitting pin and the fitting hole is provided. Accordingly, the number of the positioning pins and the engagement pins provided to the drop prevention member 34 can be arbitrarily selected according to the shape and size of the drop prevention member 34, the material constituting the drop prevention member 34, and the like. As described in the present embodiment, when the drop prevention member 34 is 1/2 long relative to one side of the cartridge main body 10 (the cartridge upper body 12 and the cartridge lower body 11), the drop prevention member 34 is preferably provided with two or more positioning pins and positioning holes, respectively.
Next, a structure provided in the rotating member 25 for making it difficult to apply scratches to the data recording area of the disc 100 will be described. Fig. 180 shows a structure in the vicinity of the disk holding portion 22b in a state where the shutters 21 and 22 are closed. In the disk receiving portion 25a of the rotating member 25, referring to fig. 152, the groove 25p described in embodiment 23 is provided outside the region 25b in contact with the disk 100. As shown in fig. 180, the rotating member 25 has a plurality of fitting portions 66 configured to fill a part of the groove 25 p.
Fig. 181 shows a cross section of one insertion portion 66 in a state where the shutters 21 and 22 are closed. As shown in fig. 181, the fitting portion 66 completely fills the groove 25p in the cross-sectional direction, and the upper surface 66a thereof is inclined toward the center of the disk opening. In a state where the shutters 21 and 22 are closed, the disk holding portions 21b, 22a, and 22b provided in the shutters 21 and 22 hold and fix the disk, and therefore the disk 100 is in contact with the region 25b of the rotating member 25.
As shown in fig. 182, if the shutter 21, 22 is opened, the disk 100 can move within the disk housing portion 10d since the disk holding portions 21b, 22a, 22b release the disk 100. If the disc 100 moves close to the side surface 12i of the cartridge upper body 12, the disc 100 rides on the fitting portion 66, and the edge on the outer periphery of the signal recording surface 100A comes into contact with the inclined surface of the fitting portion 66. Therefore, the signal recording surface 100A can be prevented from contacting other portions of the rotary member 25, and particularly, the signal recording area 100d can be prevented from contacting the disk receiving portion 25a to cause scratches.
Since the embedded portion 66 fills the groove 25p, if the embedded portion 66 is continuously formed across the entire groove 25p, the dust-proof function of the bottom groove 25p described in embodiment 23 is impaired. Therefore, it is preferable that the plurality of fitting portions 66 are provided intermittently so that the groove 15p remains. On the other hand, if the circumferential length of the fitting portion 66 is 0.5mm or less, when the disk 100 comes into contact with the fitting portion 66, the area where the inclined surface 66a of the fitting portion 66 comes into contact with the disk 100 becomes small, and the force received from the fitting portion 66 of the disk 100 is concentrated to a part. As a result, there is a possibility that a flaw or a trace of contact may be generated in the disc 100. Therefore, the circumferential length of the fitting portion 66 is preferably 1mm or more. The upper limit of the length of the circumference depends on the size of the disc 100 that the disc cartridge 326 houses. For example, when the diameter of the disc 100 is 5 inches, it is preferably 10mm or less. The length of the circumference is suitably 2mm to 5 mm.
Even if the insertion portion 66 has a length in the above range, it is not preferable to provide the insertion portion 66 at a position overlapping with the disk holding portions 21b, 22a, and 22b or at a position very close to the disk holding portions 21b, 22a, and 22b when the shutter is closed. This is because, when the shutter is closed, if a large external force is applied to the disk cartridge when the disk holding portions 21B, 22a, and 22B and the fit-in portion 66 are close to each other, the force dispersed by the contact of the disk holding portions 21B, 22a, and 22B with the ribs on the label surface 100B side of the disk 100 is concentrated on the fit-in portion 66 on the information recording surface 100A side, and there is a possibility that a flaw or a trace of contact may be generated in the disk 100 by the contact with the fit-in portion 66.
Next, a structure in which a large impact is applied to the disk cartridge 326 even in a state where the disk is stored, and it is difficult for the disk 100 to protrude from the disk cartridge 326 by the impact will be described.
Fig. 183 is a perspective view showing a structure in the vicinity of the disk holding portion 22b when the disk holding portions 21b, 22a, and 22b are in a state of holding the disk 100 when the shutter is closed. Fig. 184 is a cross section showing the disk holding portion 22b including the configuration shown in fig. 183. In the disk cartridge described in embodiment 22 and the like, each disk holding portion has one slope for holding a disk. In the present embodiment, the disk holding portion has a plurality of surfaces. Hereinafter, the disk holding portion 22b is described, but it has the same structure as the disk holding portion 21 b.
As shown in fig. 183 and 184, the disk holding portion 22b is disposed in a direction perpendicular to the bottom of the disk storage portion, and includes a 1 st inclined surface 67a, a 2 nd inclined surface 67c, and a horizontal surface 67b inclined so as to face the bottom. The horizontal surface 67b is provided between the 1 st inclined surface 67a and the 2 nd inclined surface 67c, and is substantially parallel to the bottom. As described in detail in embodiment 22, the tapered portion 26c is provided on the bottom of the disk holding portion 22b where the shutter 22 is provided, and the recess 11x is provided on the region where the disk holding portion 22b of the cartridge lower body 11 is located. Since the area 26b where the tapered portion 26c of the shutter 22 is provided becomes small in thickness, elastic deformation can be generated.
As shown in fig. 184, when the shutter is in the closed state, the rib 100c of the disk 100 abuts against the 2 nd slope 67b of the disk holding portion 22 b. Thus, the disk 100 is held while the disk 100 is pushed toward the bottom of the disk storage unit, and the disk 100 is fixed. Normally, in this state, the disk cartridge 326 can be moved.
In the state shown in fig. 184, if some strong external force such as dropping the disk cartridge 326 is applied to the disk cartridge 326, an inertial force works on the disk 100, and as shown by the arrow in fig. 184, a force pressing outward from the center of the disk 100 is applied to the disk holding portion 22 b. Therefore, as shown in fig. 185, the region 26b of the shutter 22 is deformed, and the region 26b of the shutter 22 protrudes into the recess 11x of the cartridge lower body 11. At this time, since the disk holding portion 22b is inclined outward, the 2 nd inclined surface 67c of the disk holding portion 22b is separated from the edge of the disk 100, thereby freeing the disk 100.
The inclination of the disk holding portion 22b is restricted by abutting the disk holding portion 22b against a stopper (stopper)25t provided on the turning member 25, and the disk holding portion 22b can be prevented from being inclined outward beyond this.
The disk 100 released from the disk holding portion 22b may be further forced to fall off the disk opening 12w by an impact by a screw or the like. However, even in the state where the disk holding portion 22b is inclined, the horizontal surface 67b of the disk holding portion is positioned above the outer periphery of the disk 100. Therefore, the disk 100 is prevented from falling off from the disk opening 12w by abutting the horizontal surface 67 b.
The 1 st slope of the disk holding portion 22b guides the disk 100 from a predetermined position to an appropriate position for holding the disk 100 by abutting the ridge 100c of the disk 100 from a position as far above the disk storage portion as possible when the shutter is closed. This function is the same as the detailed description of the operation of the inclined surface 22 b' of the disk holding portion 22b in the prior art of embodiment 25.
As described above, according to the present embodiment, even if a large external force is applied to the disk cartridge 326 in the state of holding the disk, the disk 100 can be prevented from falling off from the disk opening 12w by the horizontal surface 67b of the disk holding portion 22 b.
Next, a structure for preventing deformation of the rotating member 25 will be described. Fig. 186 is a perspective view showing the case upper body 12 removed from the disk case 326, showing a state where the shutter is opened. Fig. 187 is a perspective view showing the vicinity of the front end of the head opening 11h enlarged. As shown in fig. 186, in the state where the shutter 21, 22 has opened the head opening 11h, a notch 25c is provided in the disk receiving portion 25a of the rotating member 25 in order to allow the not-shown photo head to access the disk 100 (not shown) from the head opening 11h without hindrance. The notch 25c extends from the disk receiving portion 25a to a part of the side surface 25i of the rotating member 25.
However, by providing the notch 25c, the bridge 25v, which is the portion of the head opening 11h located on the side surface 25i, becomes thin and is easily bent when the shutter is opened. Therefore, a space below the bridge portion 25v is secured, and when the optical head accesses the disk, a pair of support portions 11k that hold the head opening 11h of the cartridge lower body 11 are provided so as not to contact the bridge portion 25 v. The support portion 11k is formed integrally with the side wall of the box lower body 11, and abuts against the bottom of the bridge portion 25v when the shutter is opened, thereby restricting the height of the bridge portion 25v and preventing deformation of the bridge portion 25v by supporting the bridge arm 25v in the vicinity of the opening 11h as much as possible. As shown in fig. 187, the bridge portion 25v protrudes on the outer peripheral side of the other portion of the side wall 25i of the rotating member 25 so that the support portion 25v abuts only the bridge portion 25v and does not abut the other portion of the side wall 25 i.
According to the above configuration, when the shutter is opened, the position of the bridge portion 25v of the rotary member 25 is restricted, and a space for the optical head to access can be surely secured.
Next, a structure in which scratches are less likely to be generated on the signal recording surface of the disc 100 will be described. Fig. 188 is a perspective view showing the case upper body 12 removed from the disk case 326, showing a state where the shutter is closed. As shown by the hatching in fig. 188, when the shutter is closed, the surfaces of the shutters 21 and 22 facing the disk 100 (not shown) and the upper surface 25k of the disk receiving portion 25a of the rotor 25 are subjected to a wrinkle process (pearskin process) in a non-contact area not contacting the disk 100 when the shutter is closed. The difference in the unevenness of the corrugation is preferably 5 to 20 μm. In the present embodiment, for example, a corrugation process having a difference of unevenness of 10 μm is performed. It is preferable that a contact area with the disk 100 is located outside the non-contact area when the shutter is closed, and the wrinkle process is not applied to the contact area. This is because the disk 100 needs to be in close contact with the contact area to prevent the entry of dust or dirt.
The area where the above-described crumpling process is performed is not in contact with the disk 100 in a state where the shutter is closed and the disk 100 is held. However, when a large shock is applied by dropping the disk cartridge 326 or the like while holding the disk 100, the information recording surface of the disk 100 may contact the above-described area. In this case, even if the information recording surface of the disc 100 is assumed to be in contact with the above-described area, the contact point is point contact due to the corrugated shape. Therefore, the scratches generated on the information recording surface can be reduced, and the signal quality of the data recorded on the information recording surface can be prevented from deteriorating.
In the disk cartridge 326, the label surface of the disk is exposed from the disk opening 12 w. Therefore, the user may press the label surface with a finger or the like, whereby the disk may be bent and the above-described region may be brought into contact with the information recording surface of the disk. In this case, the contact point between the information recording surface and the region is point-contacted by the cockle processing, and the scratch generated on the information recording surface can be reduced as compared with the surface or line contact generated when the cockle processing is not applied.
In fig. 188, the wrinkle process is not applied to the region between the convex portion 20w and the convex portion 20d, but the wrinkle process may be applied to the region.
Next, the dust-proof mechanism of the disk cartridge 326 will be described. The upper part of fig. 189 is a plan view of the shutters 21, 22 viewed from the side facing the cartridge lower body 11, and the lower part of fig. 189 is a plan view of the shutters 21, 22 viewed from the inner side facing the cartridge lower body 11. Fig. 190 is a perspective view showing the disk cartridge 326 with the cartridge upper body 12 and the pivot member 25 removed, showing a state in which the shutter is closed. Fig. 191 is a sectional view of the structure shown in fig. 190, viewed from the direction of the arrow, crossing the head aperture 11 h.
As shown in these figures, the convex portion 74a is provided on the magnetic head opening 11h and the chucking opening 11c on the inner side surface 11u of the cartridge lower body 11. The convex portions 74a extend from the opposite edges of the head opening 11h and the chucking opening 11c so as to sandwich the head opening 11h, and the convex portions 74a extending from both sides are integrated in the vicinity of the center of the case lower body 11 and extend toward the rotation shafts 39' of the shutters 21 and 22.
On the surfaces of the shutters 21 and 22 opposite to the inner side surfaces 11u, the 1 st projection 73a, the 2 nd projection 73b, the 1 st projection 73a ', and the 2 nd projection 73 b' are provided so as to sandwich the projection 74a of the cartridge lower body 11 when the shutters are closed.
As shown in fig. 191, when the shutter is closed, the projection 74a of the case lower body 11 is fitted into the recess formed by the 1 st projection 73a and the 2 nd projection 73b provided to the shutters 21, 22. Thus, the inside of the disk cartridge 326 is sealed from the head opening 11h and the chucking opening 11c, and dust or dirt is prevented from entering from the head opening 11h and the chucking opening 11 c.
As shown in fig. 189 and 190, the surfaces of the 1 st projection 73a and the 2 nd projection 73b on which the shutters 21 and 22 are provided may be provided with 3 rd projections 73c and 73c ' having substantially the same height as the 1 st projection 73a and the 2 nd projection 73b and provided along an arc having the rotation holes 37 ' and 38 ' of the shutters 21 and 22 as the center. The 3 rd projections 73c, 73 c' contact the inner side surface 11u of the cartridge lower body 11 to restrict the positions of the shutters 21, 22 in order to prevent the shutters 21, 22 from being deformed. As shown in fig. 189, two or more 3 rd projections 73c and 73 c' may be provided on the shutters 21 and 22, respectively.
Next, a method of manufacturing the disk cartridge 326 accommodating the disk 100 will be described.
First, the cartridge upper body 12, the cartridge lower body 11, the rotation member 25, the shutters 21, 22, the drop-off preventing member 34 are molded by injection molding, respectively, using resin. Since the pivot member 25 and the shutters 21 and 22 are movable in the disk cartridge 326, it is preferably made of a material having a small friction coefficient and excellent mechanical properties such as traction force and bending and also excellent wear resistance. For example, the rotating member 25 and the shutters 21 and 22 are made of Polyacetal (POM). The upper and lower case bodies 11 and 12 are preferably made of a material having high impact strength and excellent coloring property. For example, the cartridge upper body 11 and the cartridge lower body 12 are made of ABS resin. The cartridge upper and lower bodies 11 and 12, the rotor 25 and the shutters 21 and 22 are preferably formed of different materials.
First, as shown in fig. 192(a), the rotation shaft 39 provided in the inner surface 11u of the cartridge lower body 11 is inserted into the rotation holes 37 ', 38' of the shutters 21, 22, and the shutters 21, 22 are arranged on the inner surface 11u of the cartridge lower body 11 so that the shutters 21, 22 are in an open state. Next, as shown in fig. 192(b), the projections 25e and 25f of the rotary member 25 are inserted into the guide grooves 27e and 28f, respectively, and the rotary member 25 is disposed on the shutters 21 and 22. As necessary, a lock member 98 for locking the rotation member 25 and a slide member 99 for discriminating the kind of the disc are arranged.
As shown in fig. 192(c), the cartridge upper body 12 is disposed opposite to the cartridge lower body 11. The upper and lower cartridge bodies 12 and 11 are bonded by ultrasonic fusion using a jig using a horn and applying ultrasonic waves while bonding the upper and lower cartridge bodies 12 and 11. By applying ultrasonic waves, frictional heat is generated at the contact portions of the cartridge upper body 12 and the cartridge lower body 11, so that the contact portions melt, and bonding is achieved. At this time, since the rotation member 25 is formed of a material different from the shutter 21, 22, it is not melted from the upper case body 12 or the lower case body 11. Thereby, the cartridge main body 10 is formed by the cartridge upper body 12 and the cartridge lower body 11. Thereafter, a dust removing process or a cleaning process may be further performed to remove dust generated by the bonding.
Next, as shown in fig. 193(a), the disk 100 is inserted from the disk opening 12w of the cartridge body 10, and the disk storing operation is started. Next, the drop prevention member 34 is attached to the cartridge main body 10. As shown in fig. 193(a), the engagement pins 34a and 34a ' are fixed to the engagement holes 64c and 64c ' by inserting the engagement pins 34a and 34a ' and the positioning pins 34b and 34b ' into the engagement holes 64c and 64c ', respectively. As described above, the disc cartridge 326 shown in fig. 193(b) after housing the disc 100 is completed.
According to this method, since the tray 100 is stored after the upper case 12 and the lower case 11 are joined by ultrasonic welding, even if dust is generated by ultrasonic welding, the dust does not adhere to the tray 100, and the reliability of the tray 100 can be improved. Further, since the disc 100 can be accommodated after the cartridge upper body 10 is completed, the manufacturing of the cartridge main body 10 and the manufacturing of the disc 100 can be performed separately, and after the completion of the manufacturing of the cartridge main body 10 or the manufacturing of the disc 100, the disc cartridge 326' accommodating the disc 100 can be manufactured by accommodating the disc 100 in the cartridge main body 10 and attaching the drop preventing member 34 thereto. Since no special manufacturing machine is required for attaching the drop prevention member 34, the process of storing the tray 100 in the cartridge body 10 can be performed at any place.
(embodiment 27)
The disk drive apparatus of the present invention will be described below.
Fig. 194 is a perspective view schematically showing a main part of the disk drive apparatus 900. The disk drive apparatus 900 is capable of loading any of the disk cartridges 301 to 326 of embodiments 1 to 26. Fig. 194 shows a state in which the disk cartridge 326 according to embodiment 26 is loaded. Further, the disc 100 is indicated by a dotted line.
A disk drive device 900 includes: a drive mechanism 902 for rotating the disk 100 accommodated in the disk cartridge 326; and a magnetic head 908 for performing recording and/or reproducing of information to/from the disc 100.
The drive mechanism 902 includes a spindle motor 904 and a turntable 906 attached to a rotation shaft of the spindle motor 904, and the spindle motor 904 is supported by a base 910. The magnetic head 908 is moved along the guide 912 by a drive (actuator) not shown in the figure.
Further, the disk drive apparatus 900 has a clamper (clamper)916 supported by a lever (arm) 914. The turntable 906 and the clamper 916 include, for example, a magnet and a magnetic material. As described below, the disc 100 is held and held between the clamper 916 and the rotating table 906 by their attractive force, and the disc 100 is fixed on the rotating table 906. This allows the driving force of the spindle motor 904 to be transmitted to the disk 100 without causing surface wobbling, thereby rotating the disk 100.
The disk cartridge 326 has an operation portion 25j for opening and closing the 1 st and 2 nd shutter 21 and 22 on a side surface 10r parallel to the insertion direction 1A of the disk cartridge 326. Therefore, the disk drive apparatus 900 includes a shutter opening/closing mechanism 918 for opening and closing the shutter in cooperation with the operation portion 25j in an area close to the side surface 10r of the disk cartridge 326 loaded on the disk drive apparatus 900. In fig. 194, the shutter opening/closing mechanism 918 is shown separated from the operation portion 25j in order to clarify the operation portion 25 j. Further, an actuator for moving the shutter opening/closing mechanism 918 is also omitted.
The shutter opening/closing mechanism 918 is provided corresponding to the position of a shutter opening/closing operation portion of the disk cartridge inserted into the disk drive apparatus 900. For example, like the disk cartridge according to embodiment 1 or 10, when the disk cartridge having the shutter opening/closing operation portion is mounted on the side surface 10p where the head opening 11h is provided, the shutter opening/closing mechanism 918 is provided in an area close to the side surface 10 p. When the disk cartridge according to any of embodiments 16 to 18 is loaded in the disk drive apparatus 900, the shutter opening/closing mechanism 918 may be provided close to the side surface 10 q.
Further, two or more shutter opening/closing mechanisms 918 may be provided in the disk drive apparatus 900. For example, in fig. 194, a shutter opening/closing mechanism 918 may be provided on a side surface 10p of a disk cartridge 326, and a disk drive apparatus 900 capable of loading either the disk cartridge of embodiment 1 or the disk cartridge 326 of embodiment 23 is manufactured.
The shutter opening/closing mechanism 918 has a structure that matches the shape or operation of the operation portion 25j provided in the disk cartridge. In the case of the disk cartridge 326, the 1 st shutter 21 and the 2 nd shutter 22 are opened and closed by sliding the operation portion 25j, and therefore, a shutter opening and closing mechanism 918 which slides in a direction parallel to the arrow 1A in cooperation with the operation portion 25j is provided. The operation portion 25j may be formed only by a gear, or, as described in embodiment 16, in the case where a disk cartridge having a gear-shaped operation portion is loaded, a shutter opening/closing mechanism 918 having a gear shape and performing a rotational operation may be used.
A pole 920 defining the height at which the disk cartridge 326 is held is provided on the base 910, and the disk cartridge 326 is held on the upper surface of the pole 920. Further, a positioning pin 922 that fits a positioning hole 11w provided in the disk cartridge 326 is provided in the base 910.
The post 920 and the positioning pin 922 function as a support structure for positioning and supporting the disk cartridge 326 at a predetermined position with respect to the drive mechanism 902. Instead of the posts 920 and the positioning pins 922, a rack (tray) as a support structure may be provided in the disk drive apparatus 900, that is, the rack may be arranged so that the disk cartridge 326 is placed on the upper surface of the rack, the disk 100 is inserted into the disk drive apparatus 900 through the storage rack, and the disk cartridge 326 is positioned at a predetermined position with respect to the drive mechanism 902 and the magnetic head 908. Further, a support structure using a bracket in combination with the positioning pin 922 may be adopted.
The operation of the disk drive apparatus 900 will be described below.
First, the disk cartridge 326 accommodating the disk 100 is loaded in the disk drive apparatus 900. The disk cartridge 326 may be loaded manually by the operator, or the disk cartridge 326 may be carried from a disk cartridge insertion hole of the disk drive apparatus 900 to the position shown in fig. 194 by a loading mechanism not shown. In this case, for example, at a position shown by an arrow 926 in fig. 194, a loading mechanism provided with the concave portion 10c described in embodiment 1 or the like or the concave portion 10e of embodiment 16 may be engaged with the concave portion 10c or the concave portion 10 e. In addition, a stent as described above may also be used. By either method, the disk drive apparatus 326 is positioned at a predetermined position relative to the drive mechanism 902 and the magnetic head 908.
In addition, the recessed portion 10g described in embodiment 1 or the slit portion 10b in embodiment 16 may be provided in the portion indicated by the arrow 928 or the arrow 930 of the disk cartridge 326, and a protruding portion (not shown) that fits in the recessed portion 10g or the slit portion 10b may be provided in the disk drive apparatus 900. According to the above, if the disk cartridge 326 is inserted into the disk drive apparatus 900 upside down or back and forth, the normal insertion cannot be performed with mutual interference. This can prevent erroneous insertion.
When the disk cartridge 326 is loaded at the position shown in fig. 194, the shutter opening/closing mechanism 918 engages with the operation portion 25j, and the operation portion 25j slides in the direction opposite to the arrow 1A. With this operation, the 1 st shutter 21 and the 2 nd shutter 22 start the opening operation, and the head opening 11h and the chucking opening 11c are opened. Further, as described in embodiment 20, the shutter opening/closing mechanism 918 releases the holding operation of the disk 100 in the disk holding portions 21b, 22a, and 22b via the 1 st shutter 21 and the 2 nd shutter 22. Therefore, the disk 100 is released from the disk holding portions 21b, 22a, and 22 b. Next, the support bar 914 holding the clamper 916 is lowered, holding the disk 100 between the clamper 916 and the rotating table 906. As a result, the disk 100 is rotatably held on the turntable 906 in the housing portion of the disk cartridge 326.
The disk 100 is rotated by a spindle motor 904. The magnetic head 908 accesses the information recording area of the disc 100, records information on the disc 100, and reproduces information recorded on the disc 100.
When the disk cartridge 326 is removed (unloaded) from the disk drive apparatus 900, the support rod 914 is first raised to disengage the clamper 916 from the disk 100. Next, the shutter opening/closing mechanism 918 is moved in the direction of arrow 1A to slide the operation portion 25 j. With this operation, the 1 st shutter 21 and the 2 nd shutter 22 are closed. The disk holding portion holds the disk 100 when the 1 st shutter 21 and the 2 nd shutter 22 are closed, and holds the disk 100 if the 1 st shutter 21 and the 2 nd shutter 22 are completely closed. Although not shown in the drawing hereinafter, the disk cartridge 326 is excluded from the disk drive apparatus 900 by the unloading mechanism.
Also, in fig. 194, the disk drive apparatus 900 holds the disk cartridge 326 horizontally. However, as described in embodiment 1 or 8, the disk drive apparatus 900 may be configured to mount a disk cartridge that is vertically held. Even when the disk cartridge is loaded vertically into the disk drive apparatus 900, the disk 100 can be prevented from falling off the disk storage section by the fall-off preventing member.
Although the above-described embodiments 1 to 19 describe the method of adhering the nonwoven fabric to the shutter by ultrasonic waves or the like, in the case where the disk has a structure in which a hard coat (hardcoat) is formed on the signal recording surface of the disk and scratches are hard to adhere to the disk, the nonwoven fabric is not necessarily required, and the shutter may be directly surface-contacted to the disk. Further, the entire surface of the disc does not need to be in surface contact with the signal recording surface of the disc, and the shutter may have a configuration such that at least a portion of the shutter is in contact with the signal recording surface of the disc. That is, the shutter may be configured to be in surface contact with a part of the entire surface of the shutter. In addition, a structure such as a nonwoven fabric for preventing the adhesion of a flaw may be provided in the portion in surface contact.
In the above-described embodiments 1 to 27, the disc 100 accommodated in the disc cartridge has an information recording surface on only one surface. The disk cartridge of the present invention is not limited to a disk cartridge having a structure in which one surface of the disk is exposed to the outside, and a disk having a signal recording surface on only one surface is exemplified as an example of a disk most suitable for such a structure. For example, even a disc having signal recording surfaces on both sides thereof is appropriately stored in the disc cartridge of the present invention, and loaded in the disc device, and signals can be recorded or reproduced. However, when a disk having signal recording surfaces on both sides is stored in the disk cartridge of the present invention, dust may adhere to the exposed information recording surface, and therefore, it is preferable to provide any mechanism to prevent dust from adhering thereto.
Although the size of the disc 100 is not particularly described in the above embodiments 1 to 27, the present invention can be implemented as a disc cartridge that stores discs of various sizes such as a 12cm disc and other discs.
Although the above-described embodiments 1 to 27 illustrate the disk cartridge having a slightly larger outer shape than the disk, the size of the disk and the disk cartridge is not limited to the relationship shown in the drawings. For example, although the outer shape of the disk cartridge is large enough to accommodate a disk size of 12cm, the disk storage section or the disk holding section provided in the disk cartridge may be of a size and structure suitable for accommodating a disk of 8 cm. Such a disk cartridge can function as an adapter (adapter) for recording/reproducing an 8cm disk, for example, in a 12cm disk recording/reproducing apparatus.
The features described in each of the above-described embodiments 1 to 27 can be implemented in appropriate combinations. For example, the rotating member described in embodiment 19 may be provided in the disk cartridge of embodiment 16. Further, various recesses for collecting dust described in embodiment 15 may be provided in the disk cartridge of embodiment 16. As described above, since the combinations of the above-described 1 st to 27 th embodiments can be variously combined, it is not possible to exemplify all possible combinations of examples. However, a person skilled in the art can implement the combination of the above-described various possible embodiments based on the description of the present invention, and such a combination of the various possible embodiments is also included in the scope of the present invention.
(availability in industry)
The disk cartridge of the present invention is particularly suitable for a disk having a recording surface on only one side. The thickness of the cartridge can be reduced by providing the cartridge main body with a structure in which only the signal recording surface of the disk is covered and one surface is exposed. Further, since the shutter has a shape covering only one side of the disk cartridge, the structure can be simplified, and the cost of the shutter can be reduced. Further, since the disk holding portion or the disk holding member holds the disk by pressing the disk against the shutter or the cartridge main body, the disk can be prevented from wobbling in the cartridge main body, and dust and the like can be prevented from adhering to the signal recording surface of the disk. In addition, the design is improved by using the disk label surface exposed to the disk opening.
Therefore, the present invention provides a disk cartridge which is thin, has high dust resistance, is excellent in design, and can be used in various drive devices.
Claims (31)
1. A disk cartridge, characterized in that,
comprising:
a cartridge body comprising: a disk storage section having a disk opening and a bottom, and storing a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening; a chucking opening portion provided at a bottom of the disk storage portion to chuck the disk from outside; and a head opening portion provided at a bottom portion of the disk storage portion for allowing a head for recording and/or reproducing signals to access a 2 nd surface of the disk,
1 st and 2 nd shutters provided on a bottom of the disk storage portion for opening or closing the head opening portion to the outside, and
a rotation member which is held by the 1 st and 2 nd shutters in the disk storage portion and is engaged with the 1 st and 2 nd shutters so that the 1 st and 2 nd shutters can be opened and closed by rotating in the disk storage portion,
wherein,
the rotating member includes a disk receiving portion having: a contact area which is in contact with an outer peripheral edge of a 2 nd surface of the disk and receives the disk when the 1 st and 2 nd shutters are in a closed state; a groove disposed outside the contact region.
2. The disk cartridge of claim 1,
the rotating member has a notch provided in the disk receiving portion so as to be positioned in the head opening portion in a state where the 1 st and 2 nd shutters are opened,
the disk receiving portion having a side wall provided along an outer periphery of the bottom portion,
the 1 st and 2 nd shutters each have a disk holding portion, and the disk holding portion holds the center of the disk by shifting the center of the disk with respect to the center of the disk holding portion so that the outer side surface of the disk comes into contact with the side wall of the disk housing portion in a region where the notch of the rotary member is located when the 1 st and 2 nd shutters are in the closed state.
3. The disk cartridge of claim 2,
the groove of the disk receiving portion is exposed to the disk receiving portion in a state where the 1 st and 2 nd shutters are closed.
4. The disk cartridge of claim 1,
the rotating member has a plurality of fitting portions provided to fill a part of the groove.
5. The disk cartridge of claim 4,
the length of the insertion portion in the circumferential direction is 1mm or more.
6. The disk cartridge of claim 5,
the insertion portion has an upper surface inclined toward the center of the disk opening.
7. The disk cartridge of claim 1,
further comprising:
1 st and 2 nd disk holding portions which are provided in a part of the 1 st and 2 nd shutters, respectively, and which fix the disk to the 1 st and 2 nd shutters or the cartridge main body when the 1 st and 2 nd shutters close the chucking opening portion and the head opening portion in association with opening and closing operations of the shutters; and
a drop prevention member protruding inside the disk opening,
wherein,
when the 1 st and 2 nd shutters are closed, the 1 st disk holding portion contacts the disk in the vicinity of the drop preventing member before the 2 nd disk holding portion contacts the disk.
8. The disk cartridge of claim 7,
at least a part of the 1 st disk holding portion is located below the drop preventing member and contacts the drop preventing member when the 1 st and 2 nd shutters are closed.
9. The disk cartridge of claim 8,
The 1 st and 2 nd disk holding portions each include an inverted conical inclined surface, and hold and fix the disk by abutting the inclined surface against a ridge on the outer periphery of the disk, and press and hold the disk toward the bottom side of the disk storage portion.
10. The disk cartridge of claim 9,
the 1 st disk holding portion includes: and a structure for changing the inclination and position of the disk in the disk storage portion so that the 2 nd disk holding portion is brought into contact with and held by the disk after the vicinity of the drop preventing member comes into contact with the disk.
11. The disk cartridge of claim 10,
a configuration for changing the inclination and position of the 1 st disk holding portion, comprising: a 1 st regulating surface which is configured in a mode of being not parallel to the moving direction of the 1 st disk holding part and forming a reverse taper shape when the 1 st and the 2 nd shutters are closed; and a 2 nd restriction surface disposed in parallel with the 1 st or 2 nd shutter.
12. The disk cartridge of claim 1,
the cartridge main body has: and a rotating member receiving portion which is in contact with a part of the bottom of the rotating member when the 1 st and 2 nd shutters are in the release state, and holds the rotating member.
13. The disk cartridge of claim 12,
and a rotating member receiving portion having a slope provided near the head opening portion and facing the disk opening portion, such that a part of an outer periphery of a bottom portion of the rotating member contacts the slope when the 1 st and 2 nd shutters are in the released state.
14. The disk cartridge of claim 12,
the rotary member has a 1 st and a 2 nd protrusions protruding toward the bottom of the disk storage portion, the 1 st and the 2 nd shutters have a 1 st and a 2 nd guide grooves respectively fitted to the 1 st and the 2 nd protrusions of the rotary member, and at least one of the 1 st and the 2 nd protrusions has a claw portion provided at a tip end thereof to prevent the claw portion from coming off from the corresponding guide groove.
15. The disk cartridge of claim 12,
the 1 st and 2 nd shutters have:
notches respectively provided so as to form holes at positions overlapping with the center hole of the disk when the 1 st and 2 nd shutters are in a closed state;
1 st and 2 nd convex parts provided on the periphery of the notch; and
and 1 st, 2 nd and 3 rd protrusions formed on the 1 st and 2 nd convex parts and protruding toward the central hole of the disk when the 1 st and 2 nd shutters are in a closed state.
16. The disk cartridge of claim 12,
the rotating member has a disk receiving portion provided to receive an outer peripheral edge portion of a 2 nd surface of the disk and a notch provided in the disk receiving portion, and the notch is positioned in the head opening portion when the 1 st and 2 nd shutters are in an open state,
the cartridge body has a recess provided in a region described below, wherein the region is: and a region of the bottom of the disk receiving portion, through which the notch of the rotating member passes when the 1 st and 2 nd shutters are opened, and in which the disk receiving portion overlaps the 1 st and 2 nd shutters.
17. The disk cartridge of claim 12,
the cartridge main body has 1 st and 2 nd convex portions provided in the vicinity of the head opening portion,
one of the 1 st and 2 nd shutters and the rotating member have 1 st and 2 nd protrusions that respectively abut against the 1 st and 2 nd protrusions of the cartridge body when the 1 st and 2 nd shutters are in a closed state.
18. The disk cartridge of claim 1,
further comprising a drop preventing member fixed to an upper surface of the cartridge main body so that a part of the drop preventing member protrudes from the cartridge opening,
The anti-falling part is provided with at least one positioning pin and at least one matching pin provided with a 1 st matching part,
the cartridge main body has: at least one positioning hole extending in a 1 st direction from the cartridge upper body toward the lower body, the positioning pin being held so as not to move in a direction perpendicular to the 1 st direction; and at least one engaging hole extending in the 1 st direction and having a 2 nd engaging portion that engages with the 1 st engaging portion so as not to move in the 1 st direction.
19. The disk cartridge of claim 18,
the anti-drop part is provided with two positioning pins and two matching pins respectively, and the box main body is provided with two positioning holes and two matching holes respectively.
20. The disk cartridge of claim 1,
the rotating member includes: a disk receiving portion that receives the disk by contacting an outer peripheral edge portion of a 2 nd surface of the disk when the 1 st and 2 nd shutters are in a closed state; and a notch provided in the disk receiving portion so as to be positioned in the head opening portion when the 1 st and 2 nd shutters are in an opened state,
The disk storage unit having a side wall provided along an outer periphery of the bottom portion, and the 1 st and 2 nd shutters having a disk holding unit for holding a center of the disk by shifting the center of the disk from a center of the disk storage unit so that an outer side of the disk comes into contact with the side wall of the disk storage unit in a region where the notch of the rotary member is located when the 1 st and 2 nd shutters are in a closed state,
the 1 st and 2 nd disk holding portions each have: 1 st and 2 nd slopes which are arranged in a direction perpendicular to the bottom of the disk storage portion and are inclined so as to face the bottom; and a horizontal plane disposed between the 1 st and 2 nd slopes and substantially parallel to the bottom.
21. The disk cartridge of claim 1,
the rotating member includes: a disk receiving portion that receives the disk by contacting an outer peripheral edge portion of a 2 nd surface of the disk when the 1 st and 2 nd shutters are in a closed state; a side wall surrounding an outer periphery of the tray receiving portion; and a notch provided in a part of the disk receiving portion and the side surface such as the head opening when the 1 st and 2 nd shutters are in an opened state, a side wall portion of the notch being provided so as to protrude on an outer peripheral side of the other portion,
The cartridge body has a support portion for supporting a side wall portion in which the cutout is provided, in the vicinity of the head opening portion when the shutter is opened.
22. The disk cartridge of claim 1,
the rotating member includes a disk receiving portion, wherein the disk receiving portion has: a contact area which is in contact with an outer peripheral edge of a 2 nd surface of the disk and is parallel to a bottom of a disk storage portion which receives the disk when the 1 st and 2 nd shutters are in a closed state; and a non-contact region disposed inside the contact region, not contacting the disc,
the non-contact area of the rotating member and the surfaces of the 1 st and 2 nd shutters facing the disk are corrugated.
23. The disk cartridge of claim 1,
the cartridge main body has a convex portion around the chucking opening portion and the head opening portion on the bottom portion,
the 1 st and 2 nd shutters have, on a surface opposite to the bottom portion: when the shutter is closed, the 1 st and 2 nd projections of the cartridge main body are sandwiched.
24. The disk cartridge of claim 23,
And the 1 st and 2 nd shutters respectively rotate with points other than a rotation center of the rotation member as rotation axes, and the 1 st and 2 nd shutters respectively have a 3 rd projection having a height equal to that of the 1 st and 2 nd projections and extending along an arc having the rotation axis as a center on a surface opposite to the bottom.
25. A disk drive apparatus, characterized in that,
the disk cartridge according to any of claims 1 to 24, which is loaded with a storage disk, wherein information is recorded on the disk and/or information is reproduced from the disk.
26. A disk drive device, comprising:
a drive mechanism for rotating the disc;
a magnetic head for performing an operation of recording information on the disk and/or reproducing information from the disk;
a support structure for supporting the disk cartridge as claimed in claim 2, in which the disk is accommodated, at a predetermined position with respect to the drive mechanism; and
and a shutter opening/closing mechanism that opens the shutter of the disk cartridge and releases the disk holding operation in the disk holding section of the disk cartridge so that the disk can be rotated in the disk storage section of the disk cartridge.
27. A disk drive apparatus according to claim 26,
There is also a clamper for fixing the disc on a drive mechanism.
28. A disk drive apparatus according to claim 27,
the support mechanism has a positioning pin for determining the position of the disk cartridge.
29. A method of manufacturing a disk cartridge, which relates to a method of manufacturing a disk cartridge including a cartridge main body having a disk storage section that includes a disk opening and a bottom and stores a disk having a 1 st surface and a 2 nd surface in a rotatable state such that the 1 st surface is exposed to the outside from the disk opening, the method comprising:
a step of arranging 1 st and 2 nd shutters for opening and closing the head opening portion on a lower body of a cartridge having a chucking opening portion for chucking a disk from the outside and a head opening portion for allowing a head for recording and/or reproducing a signal to access the disk, and arranging a rotating member for driving the 1 st and 2 nd shutters on the 1 st and 2 nd shutters;
a step of bonding a cartridge upper body having the disk opening portion and the cartridge lower body to form a cartridge main body;
Inserting the disk into the cartridge body from the disk opening; and
and a step of fixing the drop prevention member to the upper surface of the cartridge main body so that a part of the drop prevention member protrudes toward the disk opening.
30. The manufacturing method of a disk cartridge as claimed in claim 29,
the bonding between the upper case body and the lower case body is performed by ultrasonic welding.
31. The manufacturing method of a disk cartridge as claimed in claim 30,
the upper and lower cartridge bodies are made of ABS resin, and the rotary member and the 1 st and 2 nd shutters are made of polyacetal.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP297843/2002 | 2002-10-10 | ||
| JP2002297843 | 2002-10-10 | ||
| JP043051/2003 | 2003-02-20 | ||
| JP323679/2003 | 2003-09-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1703751A true CN1703751A (en) | 2005-11-30 |
| CN100349227C CN100349227C (en) | 2007-11-14 |
Family
ID=35632708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801012468A Expired - Fee Related CN100349227C (en) | 2002-10-10 | 2003-10-08 | Disc cartridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100349227C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101512655B (en) * | 2006-10-12 | 2012-05-16 | 松下电器产业株式会社 | Disk cartridge |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000030399A (en) * | 1998-07-13 | 2000-01-28 | Sony Corp | Disk cartridge |
| JP2001256752A (en) * | 2000-03-09 | 2001-09-21 | Sony Corp | Disk cartridge |
-
2003
- 2003-10-08 CN CNB2003801012468A patent/CN100349227C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101512655B (en) * | 2006-10-12 | 2012-05-16 | 松下电器产业株式会社 | Disk cartridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100349227C (en) | 2007-11-14 |
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Granted publication date: 20071114 Termination date: 20091109 |