CN100349227C - Disc cartridge - Google Patents

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

Disk cartridge

Technical field

The present invention relates under rotating state, to take in the disk cartridge of signal record medium of the plate-like of CD, disk etc.

Background technology

In the past, proposed to be used to keep the disk cartridge of the signal record medium of plate-like.

For example, Japanese patent laid-open 9-153264 communique disclose will single face or two-door on have a plate-like of signal recording surface recording medium (below be called dish) be accommodated in disk cartridge in the accommodation section in disc of the inside that is arranged at the disk cartridge main body that constitutes by the first half and the latter half with the form that covers fully.On this box main body, be formed for by the chucking peristome of the turntable (turntable) of Spindle Motor (spindle motor) and clamper (clamper) chucking disk and be used for magnetic head disk is carried out the reproduction of signal and the magnetic head peristome of record.The chucking peristome is connected with the magnetic head peristome, and when carrying carrier box, dust is invaded from these peristomes easily, or fingerprint easily is attached on the dish.Therefore, in disk cartridge, formed the valve (shutter) that covers these peristomes.

But, for under the situation of the disk cartridge of this structure, disk cartridge insertion dish device is write down reproduction to dish, need in taking in the space that is formed at the dish between the first half and the Lower Half, guarantee to be used to allow the crooked of surface wobble when dish rotates, dish and be used to allow space the positioning error of the dish device of disk cartridge.Therefore, the big problem of thickness change that has box main body.

In addition, because peristome and magnetic head peristome that the turntable of Spindle Motor is used are set in Lower Half, the peristome that clamper is used is set in the first half, and the valve that therefore is used for stopping up simultaneously these peristomes need have the コ word shape that links to each other from the first half to the Lower Half.But, because the valve price height of this shape, so its result increases the manufacturing cost of disk cartridge.

Also have, though under the situation of the dish that has metal dish core (hub), can attract so that do not rock by magnetic force, but under the situation of this CD that does not coil core of CD or DVD, usually dish in box, cannot not be in fixingly, state freely.Therefore, also have at dish and open valve in the device, invade the problem that dust in the box is attached to dish from peristome.In addition, also have by rocking and the signal recording surface of scuffing dish of coiling, or produce dust by the collision between dish and the box inwall, this dust is attached to the problem of dish.

Summary of the invention

The present invention is used to solve above-mentioned problem just, its objective is taking in the disk cartridge that single face especially only has the dish of record surface, by the formation of reduced thickness, simple valve, thereby reduces the cost of disk cartridge.In addition, its purpose also be to provide a kind of in disk cartridge holding tray, do not rock, reduce to also have the dish that exposes by utilization to indicate the disk cartridge that face has well-designed to the adhering to of the dust of dish.

Disk cartridge of the present invention,

Have:

Box main body comprises: accommodation section in disc, and it has dish peristome and bottom, according to having under the 1st and the 2nd the state of dish rotatable, and makes described the 1st face be exposed to outside mode from described dish peristome to take in; The chucking peristome, it is set at the bottom of described accommodation section in disc in order to tighten described dish from the outside; With the magnetic head peristome, it visits the 2nd of described dish for the magnetic head that makes the record that carries out signal and/or reproduction, is set at the bottom of described accommodation section in disc,

The the 1st and the 2nd valve, it is set on the bottom of described accommodation section in disc, is used for the open or inaccessible described magnetic head peristome to the outside, and

Rotatable parts, it is maintained on the described the 1st and the 2nd interior valve of described accommodation section in disc, and can carry out the mode that the described the 1st and the 2nd valve carries out on-off action by rotating in described accommodation section in disc, cooperates with the described the 1st and the 2nd valve,

Wherein,

Described rotatable parts comprise the dish receiving portion, and this dish receiving portion has: contact area, when it is in blocked state at the described the 1st and the 2nd valve, contact with the 2nd outer peripheral edges portion of described dish, and accept described dish; Groove, it is arranged at the outside of described contact area.

One preferred embodiment in,

Described rotatable parts have otch, and it is arranged on the dish receiving portion to be in the mode that is positioned at described magnetic head peristome under the opened state at the described the 1st and the 2nd valve,

Described accommodation section in disc has the sidewall that is provided with along the periphery of described bottom,

In the described the 1st and the 2nd valve, has the dish maintaining part respectively, wherein, described dish maintaining part, when being in inaccessible state at the described the 1st and the 2nd valve, the zone that otch was arranged at described rotatable parts, the lateral surface of described dish is docked at the mode on the sidewall of described accommodation section in disc, with the off-centring of the described relatively dish maintaining part in center of described dish and keep.

Another preferred embodiment in, the groove of described dish receiving portion, the described the 1st and the state of the 2nd valve obturation under, expose at described accommodation section in disc.

Another preferred embodiment in, described rotatable parts have a plurality of Embedded Divisions that the mode with the part of the described groove of landfill is provided with.

Another preferred embodiment in, the Zhou Fangxiang length of described Embedded Division is more than the 1mm.

Another preferred embodiment in, described Embedded Division, have to the central side of described dish peristome tilt above.

In addition, disk cartridge of the present invention,

Also have:

The the 1st and the 2nd dish maintaining part, its be set at respectively the described the 1st and the part of the 2nd valve on, and by with the on-off action interlock of described valve, when inaccessible described chucking peristome of the described the 1st and the 2nd valve and described magnetic head peristome, will coil the described relatively the 1st and the 2nd valve or described box main body and fix; And

The slip-off preventing parts, it is outstanding in described dish peristome,

Wherein,

When the described the 1st and the 2nd valve was inaccessible, described the 1st dish maintaining part contacted with described dish near described slip-off preventing parts before the described the 2nd coils maintaining part and described dish contacts.

Another preferred embodiment in, at least a portion of described the 1st dish maintaining part when the described the 1st and the 2nd valve is inaccessible, is positioned at the below of described slip-off preventing parts, contacts with described slip-off preventing parts.

Another preferred embodiment in, the the described the 1st and the 2nd coils maintaining part, comprises the inclined-plane of inverted cone shape respectively, is docked at the rib of the periphery of described dish by making described inclined-plane, control and fixing described dish, and described dish is pushed and kept to the bottom side of described accommodation section in disc.

Another preferred embodiment in, described the 1st dish maintaining part, have: with near the described slip-off preventing parts with after described dish contacts, make described the 2nd dish maintaining part and the mode that described dish contacts, controls, change the degree of tilt of the interior dish of described accommodation section in disc and the structure of position.

Another preferred embodiment in, change the degree of tilt of described the 1st dish maintaining part and the structure of position, comprising: the 1st restriction face, it is with when the described the 1st and the 2nd valve is inaccessible, not parallel relative to the direction that described the 1st dish maintaining part moves, and the mode of the contrary taper of formation is configured; With the 2nd restriction face, itself and the described the 1st or the 2nd valve configured in parallel.

In addition, disk cartridge of the present invention,

Have:

Box main body comprises: accommodation section in disc, and it has dish peristome and bottom, according to having under the 1st and the 2nd the state of dish rotatable, and makes described the 1st face be exposed to outside mode from described dish peristome to take in; The chucking peristome, it is set at the bottom of described accommodation section in disc in order to tighten described dish from the outside; With the magnetic head peristome, it visits the 2nd of described dish for the magnetic head that makes the record that carries out signal and/or reproduction, is set at the bottom of described accommodation section in disc,

The the 1st and the 2nd valve, it is set on the bottom of described accommodation section in disc, is used for the open or inaccessible described magnetic head peristome to the outside, and

Rotatable parts, it is maintained on the described the 1st and the 2nd interior valve of described accommodation section in disc, and can carry out the mode that the described the 1st and the 2nd valve carries out on-off action by rotating in described accommodation section in disc, cooperates with the described the 1st and the 2nd valve,

Wherein,

Described rotatable parts comprise the dish receiving portion, and this dish receiving portion has: contact area, when it is in blocked state at the described the 1st and the 2nd valve, contact with the 2nd outer peripheral edges portion of described dish, and accept described dish; Groove, it is arranged at the outside of described contact area,

Described box main body has: the rotatable parts receiving portion, when it is in the liberation state at the described the 1st and the 2nd valve, contact with the part of the bottom of described rotatable parts, and keep described rotatable parts.

Another preferred embodiment in, described rotatable parts receiving portion, have be arranged near the magnetic head peristome, towards the inclined-plane of described dish peristome, make that the part of the periphery of the bottom of described rotatable parts contacts with described inclined-plane when the described the 1st and the 2nd valve is in the liberation state.

Another preferred embodiment in, described rotatable parts, have towards the 1st and the 2nd outstanding projection of the bottom of described accommodation section in disc, the the described the 1st and the 2nd valve has the 1st and the 2nd guiding groove of the 1st and the 2nd projection that is matched with described rotatable parts respectively, at least one side in the described the 1st and the 2nd projection has the claw that comes off and be provided with from the guiding groove of correspondence for preventing at its front end.

Another preferred embodiment in,

The the described the 1st and the 2nd valve has:

Otch, it is with when the described the 1st and the 2nd valve is in blocked state, with the center pit position overlapped of described dish on form the hole mode be provided with respectively;

The the 1st and the 2nd protuberance, it is set at the periphery of described otch; With

1st, the 2nd and the 3rd projection, it when the described the 1st and the 2nd valve is in blocked state, is given prominence in the center pit of described dish on the described the 1st and the 2nd protuberance.

Another preferred embodiment in, described rotatable parts, have dish receiving portion that the mode according to the 2nd the outer peripheral edges portion that accepts described dish is provided with and the otch that is arranged at the dish receiving portion, and described otch, when the described the 1st and the 2nd valve is in open state, be positioned at described magnetic head peristome

Described box main body have be arranged at following describe the zone recess, wherein, this zone is meant: the bottom of described accommodation section in disc, when the described the 1st and the 2nd valve is open described rotatable parts otch passed through, dish receiving portion and the described the 1st and the 2nd valve overlapping areas.

Another preferred embodiment in,

Described box main body has near the 1st and the 2nd protuberance that is arranged at the described magnetic head peristome,

One side of the described the 1st and the 2nd valve and described rotatable parts have the 1st and the 2nd protuberance, when it is in blocked state at the described the 1st and the 2nd valve, butt up against the 1st and the 2nd protuberance of described box main body respectively.

In addition, disk cartridge of the present invention,

Have:

Box main body comprises: accommodation section in disc, and it has dish peristome and bottom, according to having under the 1st and the 2nd the state of dish rotatable, and makes described the 1st face be exposed to outside mode from described dish peristome to take in; The chucking peristome, it is set at the bottom of described accommodation section in disc in order to tighten described dish from the outside; With the magnetic head peristome, it visits the 2nd of described dish for the magnetic head that makes the record that carries out signal and/or reproduction, be set at the bottom of described accommodation section in disc, be arranged on the bottom of described accommodation section in disc, be used for the valve of or inaccessible described magnetic head peristome open the outside;

And, the slip-off preventing parts, it is fixed in above the described box main body to make the outstanding mode of a part at described box peristome,

Described slip-off preventing parts have the register pin of at least one and are provided with at least one fitting pin of the 1st auxiliary section,

Described box main body has: at least one pilot hole, and it is extending towards the 1st direction of lower body from described box upper body, does not keep described register pin to the mode that the direction vertical with described the 1st direction moves according to described register pin; With at least one mating holes, it extends along described the 1st direction, has the 2nd auxiliary section that the mode that do not move to the 1st direction according to described the 1st auxiliary section cooperates.

Another preferred embodiment in, described slip-off preventing parts have two described register pins and described fitting pin respectively, described box main body has two pilot holes and mating holes respectively.

In addition, disk cartridge of the present invention

Have:

Box main body comprises: accommodation section in disc, and it has dish peristome and bottom, according to having under the 1st and the 2nd the state of dish rotatable, and makes described the 1st face be exposed to outside mode from described dish peristome to take in; The chucking peristome, it is set at the bottom of described accommodation section in disc in order to tighten described dish from the outside; With the magnetic head peristome, it visits the 2nd of described dish for the magnetic head that makes the record that carries out signal and/or reproduction, is set at the bottom of described accommodation section in disc,

The the 1st and the 2nd valve, it is set on the bottom of described accommodation section in disc, is used for the open or inaccessible described magnetic head peristome to the outside, and

Rotatable parts, it is maintained on the described the 1st and the 2nd interior valve of described accommodation section in disc, and can carry out the mode that the described the 1st and the 2nd valve carries out on-off action by rotating in described accommodation section in disc, cooperates with the described the 1st and the 2nd valve,

Wherein,

Described rotatable parts comprise the dish receiving portion, and this dish receiving portion has: contact area, when it is in blocked state at the described the 1st and the 2nd valve, contact with the 2nd outer peripheral edges portion of described dish, and accept described dish; Groove, it is arranged at the outside of described contact area,

Described rotatable parts have: the dish receiving portion, when it is in inaccessible state at the described the 1st and the 2nd valve, contact with the 2nd outer peripheral edges portion of described dish, and accept described dish; And otch, it is arranged on the dish receiving portion in the mode that is positioned at described magnetic head peristome when the described the 1st and the 2nd valve is in opened state,

Described accommodation section in disc, has the sidewall that is provided with along the periphery of described bottom, on the described the 1st and the 2nd valve, has the dish maintaining part that possesses following feature, wherein, this coils maintaining part, when being in inaccessible state at the described the 1st and the 2nd valve, the zone that otch was arranged at described rotatable parts, the lateral surface of described dish is docked at the mode on the sidewall of described accommodation section in disc, with the off-centring of the described relatively accommodation section in disc in center of described dish and keep

The the described the 1st and the 2nd dish maintaining part has respectively: the 1st and the 2nd inclined-plane, and it is configured on the direction with the described bottom vertical of accommodation section in disc, tilts in the mode towards described bottom; And surface level, it is set between the 1st and the 2nd inclined-plane, with described bottom almost parallel.

In addition, disk cartridge of the present invention

Have:

Box main body comprises: accommodation section in disc, and it has dish peristome and bottom, according to having under the 1st and the 2nd the state of dish rotatable, and makes described the 1st face be exposed to outside mode from described dish peristome to take in; The chucking peristome, it is set at the bottom of described accommodation section in disc in order to tighten described dish from the outside; With the magnetic head peristome, it visits the 2nd of described dish for the magnetic head that makes the record that carries out signal and/or reproduction, is set at the bottom of described accommodation section in disc,

The the 1st and the 2nd valve, it is set on the bottom of described accommodation section in disc, is used for the open or inaccessible described magnetic head peristome to the outside, and

Rotatable parts, it is maintained on the described the 1st and the 2nd interior valve of described accommodation section in disc, and can carry out the mode that the described the 1st and the 2nd valve carries out on-off action by rotating in described accommodation section in disc, cooperates with the described the 1st and the 2nd valve,

Described rotatable parts have: the dish receiving portion, when it is in inaccessible state at the described the 1st and the 2nd valve, contact with the 2nd outer peripheral edges portion of described dish, and accept described dish; Sidewall, it surrounds the periphery of described dish receiving portion; And otch, when it is in opened state at the described the 1st and the 2nd valve, be set on the part that is positioned at such described dish receiving portion of described magnetic head peristome and side, the sidewall sections of described otch is set, with other parts compare in periphery side-prominent,

Described box main body when valve is open, has the support portion of supporting the sidewall sections that described otch is set near described magnetic head peristome.

In addition, disk cartridge of the present invention,

Have:

Box main body comprises: accommodation section in disc, and it has dish peristome and bottom, according to having under the 1st and the 2nd the state of dish rotatable, and makes described the 1st face be exposed to outside mode from described dish peristome to take in; The chucking peristome, it is set at the bottom of described accommodation section in disc in order to tighten described dish from the outside; With the magnetic head peristome, it visits the 2nd of described dish for the magnetic head that makes the record that carries out signal and/or reproduction, is set at the bottom of described accommodation section in disc,

The the 1st and the 2nd valve, it is set on the bottom of described accommodation section in disc, is used for the open or inaccessible described magnetic head peristome to the outside, and

Rotatable parts, it is maintained on the described the 1st and the 2nd interior valve of described accommodation section in disc, and can carry out the mode that the described the 1st and the 2nd valve carries out on-off action by rotating in described accommodation section in disc, cooperates with the described the 1st and the 2nd valve,

Described rotatable parts comprise the dish receiving portion, wherein, described dish receiving portion has: contact area, when it is in inaccessible state at the described the 1st and the 2nd valve, contact with the 2nd outer peripheral edges portion of described dish, parallel with the bottom of the accommodation section in disc of accepting described dish; And, the non-contact area, it is set at the inboard of described contact area, does not contact with described dish,

The face relative with dish of the non-contact area of described rotatable parts and the described the 1st and the 2nd valve is carried out fold processing.

In addition, disk cartridge of the present invention,

Have:

Box main body comprises: accommodation section in disc, and it has dish peristome and bottom, according to having under the 1st and the 2nd the state of dish rotatable, and makes described the 1st face be exposed to outside mode from described dish peristome to take in; The chucking peristome, it is set at the bottom of described accommodation section in disc in order to tighten described dish from the outside; With the magnetic head peristome, it visits the 2nd of described dish for the magnetic head that makes the record that carries out signal and/or reproduction, is set at the bottom of described accommodation section in disc,

The the 1st and the 2nd valve, it is set on the bottom of described accommodation section in disc, is used for the open or inaccessible described magnetic head peristome to the outside, and

Rotatable parts, it is maintained on the described the 1st and the 2nd interior valve of described accommodation section in disc, and can carry out the mode that the described the 1st and the 2nd valve carries out on-off action by rotating in described accommodation section in disc, cooperates with the described the 1st and the 2nd valve,

Described box main body has protuberance around described chucking peristome on described bottom and the described magnetic head peristome,

The the described the 1st and the 2nd valve has on the face relative with described bottom: when valve is inaccessible, and the 1st and the 2nd protuberance of the protuberance of the described box main body of clamping.

Another preferred embodiment in,

The the described the 1st and the 2nd valve, respectively the point beyond the center of rotation of described rotatable parts is rotated as rotation axis, the described the 1st and the 2nd valve possesses respectively on the face relative with described bottom and has the height that equates with the described the 1st and the 2nd protuberance and along with 3rd protuberance of described rotation axis as the circular arc extension at center.

In addition, disk drive device of the present invention loads above-mentioned each described disk cartridge of taking in dish, carries out to described dish recorded information and/or from coiling the action of redisplaying information.

In addition, disk drive device of the present invention has:

Driving mechanism is used to make dish to rotate;

Magnetic head, it carries out to described dish recorded information and/or from coiling the action of redisplaying information;

Support structure, it will take in the disk cartridge described in claim 2 of described dish, in the position support of the regulation of driving mechanism relatively; With

Discharge gate operating mechanism, the valve of its open described disk cartridge, and,, remove the maintenance action of described dish in the dish maintaining part of described disk cartridge according to the mode that can in the accommodation section in disc of described disk cartridge, rotate described dish.

Another preferred embodiment in, also have clamper, it is used for described dish is fixed on driving mechanism.

Another preferred embodiment in, described supporting mechanism has the register pin of the position that is used to determine described disk cartridge.

The invention provides a kind of manufacture method of disk cartridge, relate to possess the manufacture method of disk cartridge of the box main body of accommodation section in disc as described below, wherein, this accommodation section in disc, possess dish peristome and bottom, and will have the 1st and the 2nd dish, under rotating state and from the mode that described dish peristome makes described the 1st face be exposed to the outside, take in, the manufacture method of this disk cartridge is characterised in that, comprising:

Have in the bottom and to be used for dish from the chucking peristome of outside chucking with make the box lower body of the magnetic head peristome that the magnetic head of the record that is used to carry out signal and/or reproduction can conduct interviews to dish, configuration is used to open and close the 1st and the 2nd valve of described magnetic head peristome, and will be used to drive the described the 1st and the rotatable parts of the 2nd valve be configured in the operation of the 1st and the 2nd valve;

The box upper body that will have described dish peristome engages with described box lower body, forms the operation of box main body;

Insert the operation of described dish to described box main body from described dish peristome; With

So that its part to the outstanding mode of described dish peristome, is fixed on the slip-off preventing parts the top operation of described box main body.

Another preferred embodiment in, carry out engaging between described box upper body and the described box lower body by ultrasonic is deposited.

Another preferred embodiment in, described box upper body and described box lower body are made of ABS resin, described rotatable parts and the described the 1st and the 2nd valve are made of polyacetal.

Description of drawings

Fig. 1 is the stereographic map that is illustrated in the disk cartridge unitary construction in the 1st embodiment of the present invention.

Fig. 2 is a stereographic map of seeing the disk cartridge of Fig. 1 from below.

Fig. 3 is the exploded perspective view of state behind the disk cartridge of expression exploded view 1.

Fig. 4 is near the sectional view of dish holding member of the disk cartridge of presentation graphs 1.

Fig. 5 is near the sectional view of dish holding member of the disk cartridge of presentation graphs 1.

Fig. 6 is illustrated in the disk cartridge of Fig. 1, and valve is open, inserts the stereographic map of the state of register pin.

Fig. 7 is near the sectional view of dish holding member among Fig. 6.

Fig. 8 is near the sectional view of dish holding member among Fig. 6.

Fig. 9 is the vertical view of the unitary construction of the disk cartridge in expression the 2nd embodiment of the present invention.

Figure 10 is illustrated in the disk cartridge of Fig. 9, the vertical view of the state of open dish.

Figure 11 is the vertical view of the unitary construction of the disk cartridge in expression the 3rd embodiment of the present invention.

Figure 12 is illustrated in the disk cartridge of Figure 11, the vertical view of the state of open dish.

Figure 13 is the vertical view of the unitary construction of the disk cartridge in expression the 4th embodiment of the present invention.

Figure 14 is illustrated in the disk cartridge of Figure 13, the vertical view of the state of open dish.

Figure 15 is the vertical view that is illustrated in the unitary construction in the state of valve obturation of the disk cartridge in the 5th embodiment of the present invention.

Figure 16 is the sectional view of the dish holding member in the disk cartridge of Figure 15.

Figure 17 is the vertical view of the unitary construction under the state of valve of disk cartridge of the open Figure 15 of expression.

Figure 18 is the sectional view of the dish holding member in the disk cartridge of Figure 17.

Figure 19 is the vertical view that is illustrated in the unitary construction in the state of valve obturation of the disk cartridge in the 6th embodiment of the present invention.

Figure 20 is the vertical view of the unitary construction under the state of valve of disk cartridge of the open Figure 19 of expression.

Figure 21 is the vertical view that is illustrated in the unitary construction in the state of valve obturation of the disk cartridge in the 7th embodiment of the present invention.

Figure 22 is the vertical view of the unitary construction under the state of valve of disk cartridge of the open Figure 21 of expression.

Figure 23 is the stereographic map of the unitary construction of the disk cartridge in expression the 8th embodiment.

Figure 24 is the exploded perspective view that the state behind the disk cartridge of Figure 23 is decomposed in expression.

Figure 25 is illustrated in the disk cartridge of Figure 23, under the situation that does not have box upper body and dish, and the stereographic map of the state of valve obturation.

Figure 26 is illustrated in the disk cartridge of Figure 23, under the situation that does not have box upper body and dish, and the stereographic map of valve opened state.

Figure 27 is illustrated in the disk cartridge of Figure 23, under the situation that does not have dish, and the stereographic map of the state of valve obturation.

Figure 28 is illustrated in the disk cartridge of Figure 23, under the situation that does not have dish, and the stereographic map of valve opened state.

Figure 29 is the fragmentary cross-sectional view of expression by the section of the disk center of the disk cartridge of Figure 23.

Figure 30 is the sectional view of a part of valve of the disk cartridge of expression Figure 23.

Figure 31 is near the part vertical view of operating portion of the disk cartridge of expression Figure 23.

Figure 32 be expression Figure 23 disk cartridge the stereographic map of slip-off preventing parts.

Figure 33 is drive unit is inserted in expression from the disk cartridge of Figure 23 the being seen front view of direction.

Figure 34 is the stereographic map of the unitary construction of the disk cartridge in expression the 9th embodiment of the present invention.

Figure 35 represents to decompose the exploded perspective view of the state behind the disk cartridge of Figure 34.

Figure 36 is illustrated in the disk cartridge of Figure 34, under the situation that does not have dish, and the stereographic map of the state of valve obturation.

Figure 37 is illustrated in the disk cartridge of Figure 34, under the situation that does not have dish, and the stereographic map of valve opened state.

Figure 38 is the section by the disk center of the disk cartridge of Figure 34, the fragmentary cross-sectional view of the state of expression valve obturation.

Figure 39 is the section by the disk center of the disk cartridge of Figure 34, the fragmentary cross-sectional view of expression valve opened state.

Figure 40 is by near the section the dish periphery at the center of the dish of the disk cartridge of Figure 34, the sectional view of the state of expression valve obturation.

Figure 41 is by near the section the dish periphery at the center of the dish of the disk cartridge of Figure 34, the sectional view of expression valve opened state.

Figure 42 is the vertical view of the unitary construction of the disk cartridge in expression the 10th embodiment of the present invention.

Figure 43 is the exploded perspective view that the state behind the disk cartridge of Figure 42 is decomposed in expression.

Figure 44 is in the disk cartridge of Figure 42, under the situation that does not have dish, and the stereographic map of the state of valve obturation.

Figure 45 is illustrated in the disk cartridge of Figure 42, under the situation that does not have dish, and the stereographic map of valve opened state.

Figure 46 is the section by the disk center of the disk cartridge of Figure 42, the fragmentary cross-sectional view of the state of expression valve obturation.

Figure 47 is the section by the disk center of the disk cartridge of Figure 42, the fragmentary cross-sectional view of expression valve opened state.

Figure 48 is by near the section the dish periphery of the disk center of the disk cartridge of Figure 42, the sectional view of the state of expression valve obturation.

Figure 49 is by near the section the dish periphery of the disk center of the disk cartridge of Figure 42, the sectional view of expression valve opened state.

Figure 50 is the stereographic map of the unitary construction of the disk cartridge in expression the 11st embodiment of the present invention.

Figure 51 is the exploded perspective view of the state behind the disk cartridge of representing to decompose among Figure 50.

Figure 52 is in the disk cartridge of Figure 50, under the situation that does not have dish, and the stereographic map of the state of valve obturation.

Figure 53 is illustrated in the disk cartridge of Figure 50, under the situation that does not have dish, and the stereographic map of valve opened state.

Figure 54 is the section by the disk center of the disk cartridge of Figure 50, the fragmentary cross-sectional view of the state of expression valve obturation.

Figure 55 is the section by the disk center of the disk cartridge of Figure 50, the fragmentary cross-sectional view of expression valve opened state.

Figure 56 is the sectional view of a part of valve of the disk cartridge of expression Figure 50.

Figure 57 is near the vertical view of operating portion of the disk cartridge of expression Figure 50.

Figure 58 is illustrated in the disk cartridge of the 12nd embodiment of the present invention, under the situation that does not have dish, and the stereographic map of the state of valve obturation.

Figure 59 is the section by the disk center of the disk cartridge of Figure 58, the sectional view of the state of expression valve obturation.

Figure 60 is in the disk cartridge of expression Figure 58, under the situation that does not have dish, and the stereographic map of valve opened state.

Figure 61 is the section by the disk center of the disk cartridge of Figure 58, the sectional view of expression valve opened state.

Figure 62 is the variation of the disk cartridge of Figure 58, is illustrated under the situation that does not have dish the stereographic map of the state of valve obturation.

Figure 63 is the disk cartridge of Figure 61, is illustrated under the situation that does not have dish the stereographic map of valve opened state.

Figure 64 is the stereographic map of the unitary construction of the disk cartridge in expression the 13rd embodiment of the present invention.

Figure 65 is the exploded perspective view that the state behind the disk cartridge of Figure 64 is decomposed in expression.

Figure 66 is the approximate vertical view of valve closing state of the disk cartridge of expression Figure 64.

Figure 67 is the approximate vertical view of the state opened of the valve of disk cartridge of expression Figure 64.

Figure 68 is the detailed stereographic map of valve sticking department.

Figure 69 is the detailed sectional view of the dish maintaining part of valve.

Figure 70 is the sectional view of the junction shape of two valve of expression.

Figure 71 is the sectional view of the junction shape of two valve of expression.

Figure 72 is the stereographic map of the unitary construction of the disk cartridge in expression the 14th embodiment of the present invention.

Figure 73 is the stereographic map of valve of the disk cartridge of Figure 72.

Figure 74 is near the expansion stereographic map of dish maintaining part of the disk cartridge of Figure 72.

Figure 75 is near the expansion stereographic map of dish maintaining part of the disk cartridge of Figure 72.

Figure 76 is near the expansion stereographic map of dish maintaining part of the disk cartridge of Figure 72.

Figure 77 is illustrated in the disk cartridge of Figure 72 the approximate vertical view of valve closed condition.

Figure 78 is illustrated in the disk cartridge of Figure 72 the approximate vertical view of valve open mode.

Figure 79 is the B-B sectional view among Figure 78.

Figure 80 is the C-C sectional view among Figure 78.

Figure 81 is the A-A sectional view among Figure 78.

Figure 82 is the sectional view of the variation of indicating panel receiving portion.

Figure 83 is the exploded perspective view of the state of the disk cartridge decomposition in expression the 15th embodiment of the present invention.

Figure 84 is illustrated in the disk cartridge of Figure 83 the approximate vertical view of valve closed condition.

Figure 85 is illustrated in the disk cartridge of Figure 83 the approximate vertical view of valve open mode.

Figure 86 is the D-D sectional view among Figure 84.

Figure 87 is the E-E sectional view among Figure 85.

Figure 88 is the stereographic map of the unitary construction of the disk cartridge in expression the 16th embodiment of the present invention.

Figure 89 is the exploded perspective view that the state behind the disk cartridge of Figure 88 is decomposed in expression.

Figure 90 is illustrated in the disk cartridge of Figure 88 the approximate vertical view of valve closed condition.

Figure 91 is illustrated in the disk cartridge of Figure 88 the approximate vertical view of valve open mode.

Figure 92 represents the variation of the disk cartridge of Figure 88, is the approximate vertical view of the valve closed condition of expression disk cartridge.

Figure 93 is illustrated in the disk cartridge of Figure 92 the approximate vertical view of valve open mode.

Figure 94 is the stereographic map of the unitary construction of the disk cartridge in expression the 17th embodiment of the present invention.

Figure 95 is the exploded perspective view that the state behind the disk cartridge of Figure 94 is decomposed in expression.

Figure 96 is illustrated in the disk cartridge of Figure 94 the approximate vertical view of valve closed condition.

Figure 97 is illustrated in the disk cartridge of Figure 94 the approximate vertical view of valve open mode.

Figure 98 is the stereographic map of the unitary construction of the disk cartridge in expression the 18th embodiment of the present invention.

Figure 99 is the exploded perspective view that the state behind the disk cartridge of Figure 98 is decomposed in expression.

Figure 100 is illustrated in the disk cartridge of Figure 98 the approximate vertical view of valve closed condition.

Figure 101 is illustrated in the disk cartridge of Figure 98 the approximate vertical view of valve open mode.

Figure 102 is the exploded perspective view of the state behind the disk cartridge of representing to decompose in the 19th embodiment of the present invention.

Figure 103 is near the expansion sectional view of dish maintaining part of the disk cartridge of Figure 102.

Figure 104 is the exploded perspective view of the decomposing state of the disk cartridge in expression the 20th embodiment of the present invention.

Figure 105 is the vertical view under the state after the box upper body of the disk cartridge shown in Figure 104 is removed in expression.

Figure 106 is the F-F line sectional view among Figure 105.

Figure 107 is the valve in the valve closed condition of the disk cartridge of expression shown in Figure 104 and the vertical view of rotatable parts.

Figure 108 is the G-G line sectional view among Figure 107.

Figure 109 is the valve in the valve open mode of the disk cartridge of expression shown in Figure 104 and the vertical view of rotatable parts.

Figure 110 is the H-H line sectional view among Figure 109.

Figure 111 is the stereographic map of the protecting component of the disk cartridge shown in expression Figure 104.

Figure 112 is that the protecting component shown in expression Figure 111 is by the sectional view of the state of box upper body support.

Figure 113 is the sectional view that is illustrated in the structure of the protecting component end in the valve closed condition.

Figure 114 is the sectional view that is illustrated in the structure of the protecting component central authorities in the valve closed condition.

Figure 115 is the sectional view that is illustrated in the structure of the protecting component end in the valve open mode.

Figure 116 is the sectional view that is illustrated in the structure of the protecting component central authorities in the valve open mode.

Figure 117 is the schematic plan that is used to illustrate the variation of the disk cartridge shown in Figure 104.

Figure 118 is the schematic plan that is used to illustrate the variation of the disk cartridge shown in Figure 104.

Figure 119 is the exploded perspective view of the decomposing state of the disk cartridge in expression the 21st embodiment of the present invention.

Figure 120 is near the enlarged drawing in taking-up resume hole of the disk cartridge shown in expression Figure 119.

Figure 121 is the vertical view of the disk cartridge shown in Figure 119.

Figure 122 is near the figure of rotation axis of the J-J line sectional view of expression Figure 119.

Figure 123 is near the figure in holding section of the J-J line sectional view of expression Figure 119.

Figure 124 is the K-K line sectional view among Figure 119.

Figure 125 is illustrated in the disk cartridge shown in Figure 119, the vertical view of the state behind the releasing slip-off preventing parts.

Figure 126 is near the figure of rotation axis of the J-J line sectional view of expression Figure 125.

Figure 127 is near the figure in holding section of the J-J line sectional view of expression Figure 125.

Figure 128 is the part vertical view of pattern that is used to illustrate the variation of the disk cartridge shown in Figure 119.

Figure 129 is the part vertical view of pattern that is used to illustrate the variation of the disk cartridge shown in Figure 119.

Figure 130 is the part vertical view of pattern that is used to illustrate another variation of the disk cartridge shown in Figure 119.

Figure 131 is the part vertical view of pattern that is used to illustrate another variation of the disk cartridge shown in Figure 119.

Figure 132 is the vertical view of the disk cartridge in expression the 22nd embodiment of the present invention.

Figure 133 is the L-L line sectional view of Figure 132.

Figure 134 is the enlarged drawing of a part of the L-L line sectional view of expression Figure 132.

Figure 135 amplifies the part of Figure 132 and the synoptic diagram of expression.

Figure 136 is the enlarged drawing of another part of the L-L line sectional view of expression Figure 132.

Figure 137 is the enlarged drawing of another part of the L-L line sectional view of expression Figure 132.

Figure 138 is the figure that is arranged at the space below the dish that is used for illustrating in the disk cartridge of the 23rd embodiment of the present invention.

Figure 139 is the figure of the bending of explanation dish.

Figure 140 is the example in space that expression is arranged at the below of dish.

Figure 141 is another example of space that expression is arranged at the below of dish.

Figure 142 is the vertical view of the disk cartridge in expression the 23rd embodiment of the present invention.

Figure 143 is the A-A line sectional view of Figure 142.

Figure 144 is the exploded perspective view of the decomposing state of the disk cartridge shown in expression Figure 142.

Figure 145 is the vertical view of the disk cartridge of expression Figure 142.

Figure 146 is the N-N line section O-O line section of expression Figure 145.

Figure 147 is the stereographic map that the part of the 1st valve of the disk cartridge shown in Figure 142 and the 2nd valve is amplified in expression.

Figure 148 is the figure of the M-M line section of expression Figure 145.

Figure 149 is the stereographic map that the part of the 1st valve of the disk cartridge shown in Figure 142 and the 2nd valve is amplified in expression.

Figure 150 is the sectional view that is used to illustrate another variation of the disk cartridge shown in Figure 145.

Figure 151 is that the disk cartridge of expression from the 24th embodiment of invention takes off the vertical view of box upper body.

Figure 152 is the figure of the A-A line section of expression Figure 151.

Figure 153 is the vertical view that is illustrated in the valve opened state of the box upper body shown in Figure 151.

Figure 154 is the vertical view of the valve opened state of the disk cartridge shown in expression Figure 151.

Figure 155 is the view of the contact condition between indicating panel maintaining part and the dish.

Figure 156 is the view of another contact condition between indicating panel maintaining part and the dish.

Figure 157 is the view of another contact condition between indicating panel maintaining part and the dish.

Figure 158 is illustrated in the disk cartridge of vertical support, the stereographic map of the state of dish maintaining part holding tray.

Figure 159 is the figure of the Q-Q line section of expression Figure 158.

Figure 160 is illustrated in the disk cartridge of vertical support, the stereographic map of the state of dish maintaining part holding tray.

Figure 161 is the figure of the Q-Q line section of expression Figure 160.

Figure 162 is the exploded perspective view of the state behind the disk cartridge of representing to decompose in the 25th embodiment of the present invention.

Figure 163 is the vertical view of the disk cartridge of Figure 162 of representing under the state after taking off the box upper body.

Figure 164 is the figure of the R-R line section of expression Figure 163.

Figure 165 is another vertical view that is illustrated in the disk cartridge of the Figure 162 under the state that takes off behind the box upper body.

Figure 166 is another vertical view that is illustrated in the disk cartridge of the Figure 162 under the state that takes off behind the box upper body.

Figure 167 is the figure of the S-S line section of expression Figure 166.

Figure 168 is illustrated in the state that takes off behind the box upper body another vertical view of the disk cartridge of Figure 162 of expression down.

Figure 169 is the figure of the S-S line section of expression Figure 168.

Figure 170 is the figure of the T-T line section of expression Figure 168.

Figure 171 is illustrated under the situation that does not have the rotatable parts receiving portion, the T-T line sectional view of Figure 168.

Figure 172 is another vertical view that is illustrated in the disk cartridge of the Figure 162 under the state that takes off behind the box upper body.

Figure 173 is the figure of the U-U line section of expression Figure 172.

Figure 174 is another vertical view that is illustrated in the disk cartridge of the Figure 162 under the state that takes off behind the box upper body.

Figure 175 is another vertical view that is illustrated in the disk cartridge of the Figure 162 under the state that takes off behind the box upper body.

Figure 176 is the enlarged drawing of the part of the described figure of expression.

Figure 177 is the exploded perspective view of the state behind the disk cartridge of representing to decompose in the 26th embodiment of the present invention.

Figure 178 is illustrated in the disk cartridge shown in Figure 177, under the state that takes off the slip-off preventing parts, near the stereographic map in zone of the slip-off preventing parts of slip-off preventing parts and box upper body is installed.

Figure 179 represents the pilot hole of box upper body of the disk cartridge shown in crosscut Figure 177 and the section of mating holes.

Figure 180 is illustrated in the disk cartridge shown in Figure 177, near the structure the state lower wall maintaining part of valve obturation.

Figure 181 represents the section of an Embedded Division shown in crosscut Figure 180.

Figure 182 represents the section of an Embedded Division shown in crosscut Figure 180.

Figure 183 is in the disk cartridge shown in Figure 177, and when valve was inaccessible, the dish maintaining part was near the stereographic map the dish maintaining part under the situation of state of holding tray.

Figure 184 represents to comprise the section of the dish maintaining part of the disk cartridge shown in Figure 177.

Figure 185 represents to comprise the section of the dish maintaining part of the disk cartridge shown in Figure 177.

To be expression remove stereographic map behind the box upper body, expression valve opened state from the disk cartridge shown in Figure 177 to Figure 186.

Figure 187 is near the stereographic map of front end of the magnetic head peristome 11h of the disk cartridge shown in expression amplification Figure 177.

To be expression remove stereographic map behind the box upper body, expression valve opened state from the disk cartridge shown in Figure 177 to Figure 188.

Figure 189 is the vertical view of expression valve and box lower body.

To be expression remove stereographic map behind box upper body and the rotatable parts, the state of expression valve obturation from the disk cartridge shown in Figure 177 to Figure 190.

Figure 191 is the sectional view of the magnetic head peristome of the structure shown in expression crosscut Figure 190.

(a)～(c) of Figure 192 is the stereographic map that the method for the disk cartridge shown in Figure 177 is made in explanation.

(a) of Figure 193 and (b) be the stereographic map that the method for the disk cartridge shown in Figure 177 is made in explanation.

Figure 194 is the stereographic map of the major part of expression disk drive device of the present invention.

Embodiment

(the 1st embodiment)

Below, with reference to the stereographic map that constitutes from the integral body of oblique upper observation dish 100 and disk cartridge 301 is that the stereographic map of the each several part of Fig. 1 and the state that this disk cartridge decomposed from Fig. 2 of oblique beneath and expression is Fig. 3, and the disk cartridge 301 about the 1st embodiment of the present invention is described.

Wherein, dish 100 has the 1st and the 2nd.Fig. 1 represents the 1st, promptly describes usually the face of the label etc. of dish.The 2nd signal recording surface 100A as dish 100 represents as the back side in Fig. 3.

As shown in Figure 1, disk cartridge 301 comprises box lower body 11, box upper body 12, dish holding member 13,14 and valve 21.

As shown in Figure 3, box lower body 11 has: the chucking peristome 11c of the mode opening that can invade according to the clamping units such as Spindle Motor that dish 100 is rotated and according to the magnetic head that 100 signal recording surface 100A carries out the reproduction of signal at least and write down a side can be invaded, the magnetic head peristome 11h of access modes opening to coiling.In addition, have a pair of pilot hole 11w, its pin with a pair of box position of decision disk drive device is chimeric, and decision is to the position of the disk cartridge 301 of disk drive unit.Box lower body 11 is relative with the signal recording surface 100A of dish 100.

Box upper body 12 can be taken out and be put into dish 100, has the circular discs peristome 12w that will coil 100 full view field opening according to the top mode of exposing disk.Box upper body 12 and box lower body 11 be bonding or welding by peripheral part, constitutes box main body 10.

By the 1st medial surface 11u of the signal recording surface 100A of the relative dish 100 of box lower body 11 and the 2nd medial surface 12i roughly cylindraceous that constitutes dish peristome 12w of box upper body 12, constitute the accommodation section in disc 10d (Fig. 1) that takes in dish 100.Thus, the 1st medial surface 11u becomes the bottom surface of accommodation section in disc 10d.On the 1st medial surface 11u of box lower body 11, setting prevents coiling 100 scuffing or signal recording surface 100A being invaded the protective seam 11p of dust.

Protective seam 11p can suitably select with coating and dustproof using the coating from anti-scratch nonwoven fabrics, dustproof nonwoven fabrics, the anti-scratch used.In the present embodiment, will as the protection laminating or deposited by the dustproof thin slice that constitutes with nonwoven fabrics by ultrasonic.

In accommodation section in disc 10d, at the 2nd medial surface 12i with coil the space that dish 100 rotatable degree are set between 100.In addition, the top of accommodation section in disc 10d becomes dish peristome 12w, remains in the dish 100 among the accommodation section in disc 10d, and its single face is exposed to the outside from dish peristome 12w.

As shown in Figure 3, dish holding member 13 has a pair of elastic 13d and the 13w of cave portion of the perforation of tilting.Disk cartridge 301 has two and has identical shaped dish holding member 13.The elastic 13d of dish holding member 13 is by box upper body 12 and 11 clampings of box lower body, and therefore the front end of dish holding member 13 will coil 100 signatures and pay in the 1st medial surface 11u towards the direction of arrow 13B.In addition, a pair of dish holding member 13 roughly be arranged on according to the 13w of cave portion a pair of pilot hole 11w each directly over mode be configured.

Dish holding member 14 has revolving shaft 14s and elastic 14d.To coil holding member 14 according to the rotatable moving mode of revolving shaft 14s is fixed on the box main body 10.Elastic 14d is by box upper body 12 and 11 clampings of box lower body, and the front end of dish holding member 14 is towards arrow 14B direction.Therefore, will coil 100 gives as security on last the 1st medial surface 11u.

Valve 21 is set on the outside of the box lower body 11 relative with the signal recording surface 100A that coils 100.Shown in Fig. 1 and 2, move valve along arrow 21A or 21B direction, so that to open or inaccessible chucking peristome 11c in outside and magnetic head peristome 11h.Shutter spring 31 draws back between valve 21 and box main body 10, applies power towards the direction of closing valve 21.

As shown in Figure 2, on the surface of box main body 10 (box lower body 11), setting can be explained the identified surface or the recess 10f of content of being written in the dish 100 that is contained etc.In addition, be arranged on box main body 10 about a pair of recess 10c, when drive unit introduce to load disk cartridge 301, perhaps be incorporated under the situation of recorder changer (changer) at disk cartridge 301, can be used as and introduce with engaging or locate the recess of usefulness and use.In addition, only be arranged on one-sided recess 10g and have and misplug into preventing shape, only under the situation that disk cartridge 301 inserts along correct direction, with the protuberance normal engagement that is arranged on the drive unit.On the other hand, with disk cartridge 301 mistakenly along up and down or front and back oppositely under the situation that disk drive unit inserts, interfere with each other and can not normally insert.Therefore can prevent to misplug into.

At this, adopt Fig. 4, Fig. 5, further be elaborated by dish holding member 13 and 14 to coiling 100 maintenance action.Fig. 4 and Fig. 5 are respectively the cut-open views that the dish 100 shown in from Fig. 1 to Fig. 3 is in the dish radial direction of dish holding member 13 in the maintained state and dish holding member 14.

As Fig. 4 and shown in Figure 5, on the front end of dish holding member 13 and 14, the inclined-plane 13 ', 14 ' that tilts according to the mode of upholding is set above the periphery of dish view field upper edge dish.By elastic 13d and 14d respectively towards arrow 13B and the stressed dish holding member 13 and 14 of 14B direction, inclined-plane 13 ', 14 ' is docked on the rib 100c of dish 100 periphery, control dish 100, and press platen 100 to thickness direction 100t, signal recording surface 100A is contacted with thin slice 11p face.Thereby, will coil 100 and remain fixed on the box main body 10.Under this state, because therefore the outer peripheral portion driving fit of the signal recording surface 100A of dish 100, can prevent to adhere to dust to signal recording surface 100A on thin slice 11p.

Then, adopt Fig. 6,7 and 8, further be elaborated coiling 100 removal action by dish holding member 13 and 14.

Fig. 6 is the cut-open view that removes the disk cartridge of box upper body 12 and dish 100.In Fig. 6, valve 21 is pushed the L word shape 21s of portion by the open mechanism of covering of not shown disk drive device along arrow 21A direction, thereby chucking peristome 11c and magnetic head peristome 11h are open to the outside.In addition, a pair of box register pin 210 of disk drive device is chimeric with the pilot hole 11w of box main body 10.

In addition, Fig. 7 is the cut-open view of the dish radial direction of the dish holding member 13 in Fig. 6 state, Fig. 8 be dish holding member 14 in the state of presentation graphs 6 and valve 21 relation want portion's enlarged drawing.

As shown in Figure 7, in dish holding member 13, as if the box register pin 210 that inserts disk drive device from pilot hole 11w, then box register pin 210 is chimeric with the 13w of cave portion on the inclined-plane that runs through dish holding member 13.Therefore, dish holding member 13 is lifted along the 13A direction, and dish 100 becomes open free state by inclined-plane 13 ' from crimping.At this moment, the eaves 13e of the front end of dish holding member 13 still stretches out along the dish periphery that is positioned at the dish projected area.Therefore, in according to dish 100 disk drive devices that constitute for vertical mode,, also can prevent to coil 100 and come off from disk cartridge 301 even be in the dish open state.

In dish holding member 14, as shown in Figure 8, when valve is open state, guiding shelves limit (guide lip) 21x that is arranged at valve will stretch into the top of the recess 14w among the recess 14w of dish holding member 14 and push to.Therefore, dish holding member 14 is lifted along the 14A direction, and dish 100 becomes open free state by inclined-plane 14 ' from crimping.At this moment, the eaves 14e of the front end of dish holding member 14 still stretches out along the dish periphery of dish projected area.Therefore, in according to dish 100 disk drive devices that constitute for vertical mode, become the liberation state, also can prevent to coil 100 and come off from disk cartridge 301 even coil.

In addition, if taking-up dish forcibly, so since the cooperation of dish holding member 14 and a pair of dish holding member 13 must remove three places simultaneously and could take out.Therefore, also can prevent taking-up dish easily by the operator.

Also have, in the present embodiment, as shown in Figure 2, with the end 21r of the valve 21 of dish 100 opposite sides on brush is set or removes the dust material, also can be along with the opening operation of valve 21 is removed dust on the signal recording surface 100A of dish 100.In addition, also can have will coiling holding member under the state of holding tray and be fixedly supported on locking (lock) device on the box main body 10.

(the 2nd embodiment)

Fig. 9 is a vertical view of representing that the integral body of the disk cartridge 302 of the 2nd embodiment of the state of holding tray 100 constitutes, and Figure 10 represents to have opened the vertical view that the integral body of 100 the state of coiling constitutes.With reference to Fig. 9 and Figure 10, the disk cartridge 302 of relevant the 2nd embodiment of the present invention is described.In Fig. 9 and Figure 10, in the inscape identical, pay identical symbol, and omit explanation with the 1st embodiment.

The disk cartridge 301 of disk cartridge 302 and the 1st embodiment is different at the dish holding member, and as shown in Figure 9, disk cartridge 302 has respectively a pair of dish holding member 15,16 that slides along arrow 15A or 15B direction.

Each coils holding member 15 and has elastic 15d, and is towards arrow 15B direction, identical with dish holding member 13,14 in the 1st embodiment by elastic 15d, will coil 100 by the inclined-plane 15 ' that is arranged on front end and remain fixed to box main body 10.

Dish holding member 16 has rotation axis 16c, according to can being that the mode that rotates at the center will be coiled holding member 16 and is arranged on the box main body 10 with rotation axis 16.Dish holding member 16 is also identical with dish holding member 13,14 in the 1st embodiment, will coil 100 by the inclined-plane 16 ' that is arranged on front end and remain fixed to box main body 10.Dish holding member 16 has connecting pin 15p, is arranged at slot part 16g and connecting pin 15p interoperation on the dish holding member 16.

If a pair of box device register pin of disk drive device 210 is chimeric with the pilot hole 11w of box main body 10, then as shown in figure 10,, therefore coil holding member 15 and move along arrow 15A direction because projection 15s is pressed against on the register pin 210, inclined-plane 15 ' will coil 100 liberation.In addition, when dish holding member 15 moved, dish holding member 16 rotated along arrow 16A direction, and inclined-plane 16 ' also will coil 100 liberation.

(the 3rd embodiment)

Figure 11 is the vertical view that the integral body of the state of expression holding tray 100 constitutes.Figure 12 is that expression will coil 100 vertical views of the integral body formation of opened state.With reference to Figure 11 and Figure 12, the disk cartridge 303 of relevant the 3rd embodiment of the present invention is described.In Figure 11 and Figure 12, pay identical symbol in the inscape identical, and omit explanation with the 1st embodiment.

The disk cartridge 301 of disk cartridge 303 and the 1st embodiment is different on the dish holding member, and as shown in figure 11, disk cartridge 303 has respectively a pair of dish holding member 17,18 towards arrow 17B and 18B direction.Each coil holding member 17,18 and box main body 10 integrally formed.

The dish holding member 17 have elastic 17d, by elastic 17d towards arrow 17B direction.Dish holding member 17 is also identical with dish holding member 13,14 in the 1st embodiment, will coil 100 by the inclined-plane 17 ' that is arranged on front end and remain fixed to box main body 10.

Dish holding member 18 also has elastic 18d, and by elastic 18d, dish holding member 18 is towards arrow 18B direction.In addition, will coil 100 by the inclined-plane 18 ' that is arranged on front end and remain fixed to box main body 10.

If this disk cartridge 303 is inserted in the disk set 200, a pair of dish that then is arranged in the disk drive device 200 is removed the pin 217 projection 17s by platen holding member 17.Therefore, as shown in figure 12, dish holding member 17 is separated sale at reduced prices 100.In addition, a pair of dish releasing pin 218 that is arranged on simultaneously in the disk drive device 200 also is docked on the side 18s of dish holding member 18, and dish holding member 18 is separated sale at reduced prices 100.

(the 4th embodiment)

Figure 13 is the vertical view that the integral body of the state of expression holding tray 100 constitutes.Figure 14 represents will to coil the vertical view that the integral body of 100 opened state constitutes.With reference to Figure 13 and Figure 14, the disk cartridge 304 of relevant the 4th embodiment of the present invention is described.In Figure 13 and Figure 14, in the inscape identical, pay identical symbol, and omit explanation with the 1st embodiment.

Disk cartridge 304 is different on the dish holding member with the disk cartridge 301 of the 1st embodiment, the dish holding member 19 with ring-type.

As shown in figure 13, dish holding member 19 is formed by the elastomeric element that can freely change the ring-type of shape as the rubber band.Dish holding member 19 though not applying under the situation of power from the outside, have elliptical shape, is applying from the outside under the situation of power, also can make to be deformed into that to have roughly a round shape such.Make under the situation of coiling holding member 19 distortion according to becoming the mode of roughly justifying shape, also the diameter than dish 100 is big with becoming for its internal diameter.

As shown in figure 13, dish holding member 19 is connected with dish 100 in having a plurality of positions of elliptical shape, will coil 100 and remain fixed to box main body 10.As shown in figure 14,, then be arranged on the major axis side that a pair of protuberance 219 in the disk drive device 200 is pushed the dish holding member 19 of ring-type, make 19 distortion of dish holding member if this disk cartridge 304 is inserted in the disk drive device 200.Therefore, dish holding member 19 becomes that to have roughly a round shape such, does not become not contact between dish 100 and the dish holding member 19.Promptly coil holding member 19 and separate sale at reduced prices 100.

In order to coil 100 liberation, the power that makes 19 distortion of dish holding member also can be added on the dish holding member 19 by the protuberance of the disk drive device identical with mispluging the recess 10g (Fig. 2) that prevents usefulness.Perhaps, also can by be added on the dish holding member 19 to the introducing of the disk drive device that is arranged on disk cartridge about 304 protuberance with the identical disk drive device of recess 10c (Fig. 2).

(the 5th embodiment)

Below, with reference to Figure 15 to 18 explanation the 5th embodiment of the present invention.Figure 15 and 17 is illustrated in the disk cartridge 305 of present embodiment, the vertical view of the structure of residual fraction behind the removal box upper body.The state of Fig. 15 expression valve 21 11h of occlusion of openings portion, 11c, Figure 17 represents the state of valve 21 open peristome 11h, 11c.In addition, Figure 16 and 18 is illustrated in the state of the blocked state of valve 21 and the dish maintaining part 43 in the open state.

In the present embodiment, the inscape identical with the disk cartridge of the 1st embodiment paid identical reference marks.

The disk cartridge of present embodiment is characterised in that: the dish of dish holding member 43 keeps, the liberation action, keeps linkage part 44 by dish, makes the on-off action interlock with valve 21.

Shown in arrow 44A in Figure 15 and 17, dish keeps linkage part 44 to be arranged on the 1st medial surface 11u of disk cartridge lower body 11 according to mode that can rotational motion around the clamping peristome 11c of disk cartridge lower body 11.Dish keeps linkage part 44 to form as having cut will tighten peristome 11c fan-shaped as the part of the ring of internal diameter.

Keep on the linkage part 44 at dish, the fitting pin 47 that protrudes in box lower body 11 sides (among Figure 15 and 17 towards paper the inside) is set.This fitting pin 47 is separately positioned on box lower body 11 and the valve 21 with the guiding groove 11m and the 21m that cooperate.In addition, keep at dish on the periphery of linkage part 44, the outstanding projection 45 in side on laterally a plurality of and the box (among Figure 15 and 17 in the paper direction of front) is set.On dish keeps linkage part 44, pay and be used to prevent coiling 100 scuffing or adhering to the nonwoven fabrics or the coating material of dust to signal recording surface.

But according to the mode of the peripheral part of taking in when dish holding tray in disk cartridge, compartment is every a plurality of dish holding members 43 are set on the zone of box lower body 11.In Figure 15 and 17,, the dish holding member 43 of two, 4 or these above numbers can be set also though only represented to be provided with 3 dish holding members 43.Dish holding member 43 is according to respectively rotation axis 43A being remained in box lower body 11 as the mode that axle slides.

As shown in figure 16, near the mode on dish holding member 43 partially overlaps in the periphery that dish keeps linkage part 44 according to one is provided with.In addition, dish holding member 43 is pushed to the direction 43B towards box lower body 11 by the such mechanism of for example elastic 14d shown in Fig. 5 (not shown in Figure 16).Its result, the inclined-plane 43 ' of dish holding member 43 according to the limit dock with dish 100 rib, the limit is connected in the mode of coiling on the maintenance linkage part 44 according to dish 100 and will coils 100 and push along the direction of 43B, and holding tray 100.

Shown in Fig. 15, if the relative disk drive device 200 of disk cartridge of holding tray (not shown) is inserted into along the direction of arrow 1A, the valve opening (not shown) of disk drive device 200 makes valve 21 move along the 21A direction so, opens.If valve 21 beginning is moved along the 21A direction, the dish in the guiding groove 21m that inserts valve 21 keeps on the fitting pin 47 of linkage part 44 also the direction reinforcing to arrow 21A so.Its result, fitting pin 47 moves along the guiding groove 11m of box lower body 11, and meanwhile dish keeps linkage part 44 to beginning to rotate like that around chucking peristome 11c shown in the arrow 44A.Preferably keep linkage part 44 and the mode that valve 21 interlocks move, guiding groove 11m is roughly extended along the moving direction of valve 21 according to dish.

As shown in figure 17, if valve 21 is in complete open state, is arranged at dish so and keeps a plurality of projections 45 of the periphery of linkage part 44 to become the below that is positioned at dish holding member 43.As shown in figure 18, will coil holding member 43 jack-up upward by projection 45, the inclined-plane 43 ' of dish holding member 43 will separate from coiling 100 periphery.Therefore, power 43B liberation from platen 100 to card that will be vertically press, dish 100 pictures turn by opening.At this moment, the eaves 43e that is positioned at the front end of dish holding member 43 stretches out along the periphery top as the dish 100 in the view field of dish 100.Therefore, even in will coiling the 100 vertical disk drive devices that keep, can prevent that also becoming liberation state hour indicator at dish comes off from box.

According to the disk cartridge 305 of present embodiment,, also can make dish become the liberation state even in disk drive device 200, do not insert disk cartridge.For example, if by the open valve 21 of hand, so with the action interlock of valve 21, dish holding member 43 open dishes 100.Thereby, according to user's intention, for example dish can be taken out from box, in the dish insertion box with other.

(the 6th embodiment)

Below, the 6th embodiment of the present invention is described.Figure 19 and 20 is illustrated in the vertical view of removing the structure of residual fraction behind the box upper body in the disk cartridge 306 of present embodiment, and Figure 19 represents the state of the inaccessible magnetic head peristome of valve, and Figure 20 represents the state of the open magnetic head peristome of valve.In Figure 19 and 20, in the inscape identical, pay identical reference marks with the disk cartridge of the 1st embodiment and the 5th embodiment.

The disk cartridge of present embodiment is characterised in that the dish that has illustrated keeps linkage part to have valve concurrently in the 5th embodiment.In Figure 19 and 20, shown in arrow 46B, valve 46 is set on the 1st medial surface 11u of box lower body 11 according to mode that can rotational motion around the chucking peristome 11c of box lower body 11.Valve 46 forms picture and cuts and will tighten peristome 11c fan-shaped as the part of the ring of internal diameter.

Be provided with on the valve 46: towards the outstanding fitting pin 46p of box lower body 11 sides (in Figure 19 and 20 towards the paper direction).The guiding groove 11m that this fitting pin 46p is set on box lower body 11 and cooperates.When fitting pin 46p is positioned at the end of guiding groove 11m, by valve 46 magnetic head peristome 11h is stopped up, when fitting pin 46p is positioned on the other end of guiding groove 11m, open magnetic head peristome 11h.Guiding groove 11m is provided with the part of the concentrically ringed circular arc of chucking peristome 11c along conduct.As along with valve 46 open, preferably guiding groove 11m roughly extends along the direction of insertion 1A of disk cartridge.

Be provided with on the periphery of valve 46: to the outstanding a plurality of projection 46c of peripheral direction and box upper body 12 the sides direction of paper (in Figure 19 and 20 towards).On valve 46, pay and be used to prevent coiling 100 scuffing or adhering to the nonwoven fabrics or the coating material of dust to signal recording surface.

On the zone of box lower body 11, the isolating partition setting has a plurality of dish holding members 43 with the dish holding member same structure of embodiment 5.Dish holding member 43 and the projection 46c that is arranged at valve 46 as described in enforcement mode 5, with the action interlock of valve 46, keep or open dish.

If the disk cartridge of present embodiment is inserted in the disk drive device 200 with the direction shown in the arrow 1A of Figure 19, the fitting pin 46p of valve 46 is docked on the joint unit 201 that is arranged at disk drive device 200 so.Also have, if disk cartridge is inserted in disk drive device 200, so by beginning to move with joint unit 201 fitting pin 46p and along guiding groove 11m.Thus, valve 46 is shown in arrow 46B, and around the chucking peristome 11c of beginning rotation box lower body 11, along with rotation, the magnetic head peristome is open.

As shown in figure 20, if disk cartridge is inserted into disk drive device 200 fully, fitting pin 46p arrives the other end of guiding groove 11m so, and magnetic head peristome 11h is fully by opening.At this moment, as described in enforcement mode 5, become projection 46c be positioned at the dish holding member 43 the below such, will coil maintaining part by projection 46c and press to side on the box (paper side among Figure 20).Therefore, liberated, become free to rotate by the dish 100 that dish holding member 43 keeps.

According to the disk cartridge of present embodiment, owing to do not need dish to keep linkage part, therefore compare with the disk cartridge of embodiment 5, can be with the thickness attenuation.In addition, move along guiding groove 11m, can make valve 46 become open state, and also the dish holding member can be become the liberation state, the taking-up dish by make fitting pin 46p with hand.

Also have, in the present embodiment,,, also can rotate counterclockwise valve 46 by changing the position of guiding groove 11m though valve 46 clockwise rotates when the side is observed from box.

(the 7th embodiment)

Below, the 7th embodiment of the present invention is described.Figure 21 and 22 is illustrated in the disk cartridge 307 of present embodiment, the vertical view of the structure of residual fraction behind the removal box upper body.Figure 21 represents that valve stops up the state of magnetic head peristome, and Figure 22 represents the state of the open magnetic head peristome of valve.In Figure 21 and 22, in the inscape identical, pay identical reference marks with the disk cartridge of the 3rd embodiment and the 6th embodiment.

The disk cartridge of present embodiment, with the disk cartridge of the 6th embodiment, the structure difference of dish holding member.Specifically, shown in Figure 21 and 22, the disk cartridge of present embodiment has a plurality of dish holding members 17.The dish holding member that has illustrated in dish holding member 17 and the embodiment 3 is identical, has elastic 17d, and when valve 46 has stopped up, according to will be coiled the 100 mode holding trays of depressing to the direction 17R of disk center by the elastic force of elastic 17d.In the present embodiment, though dish holding member 17 is integrally formed with box lower body 11, also can form respectively with box lower body 11.

The section shape of the dish radial direction of dish holding member 17 is identical with dish holding member 43 shown in Figure 180, has the inclined-plane that tilts according to the mode of upholding above the dish periphery as the dish projected area.Therefore, so that the rib of dish is docked on the inclined-plane, dish is pressed towards valve 46 by dish holding member 17 holding trays.

Valve 46 has a plurality of projection 46c at its peripheral part.In the present embodiment, projection 46c is outstanding in its lateral direction, when valve 46 is in open state, is docked on the such position of the elastic 17d of dish holding member 17 at projection 46c, projection 46c is arranged on the peripheral part of valve 46.

As shown in figure 22, if valve 46 is in open state, projection 46c is by its elastic force opposing elastic 17d so, presses to the direction 17s towards the outside of dish 100.Therefore, dish 100 is liberated.But, on the front end of dish holding member 17, eaves 17e is set respectively, even become dish 100 emancipated states, eaves 17e is also outstanding to the projected area of dish.Therefore, even keep vertical mode that disk cartridge is inserted disk drive device 200 according to coiling 200, dish 100 can not come off from box yet.

According to the disk cartridge of present embodiment, the feature that in embodiment 6, has illustrated, also can dish holding member 17 is integrally formed with dish lower body 11.In this case, the disk cartridge structure is become simple, also can reduce manufacturing cost in addition.

(the 8th embodiment)

Below, with reference to figure the disk cartridge 308 of relevant the 8th embodiment of the present invention is described.

At first, with reference to Figure 23 and 24, the general configuration of disk cartridge 308 is described.Also have, identical with the 1st embodiment, have the 1st and the 2nd at the dish 100 shown in Figure 23 and 24.Figure 23 represents the 1st, i.e. the face of the sign that description is coiled usually etc.The 2nd signal recording surface 100A as dish 100 represents as the back side in Figure 24.

Shown in Figure 23 and 24, disk cartridge 308 comprises box upper body 11, box lower body 12, a pair of valve 21,22 and anti-detachment parts 23.

As shown in figure 24, box lower body 11 has: the chucking peristome 11c of the mode opening that can invade according to the clamping units such as Spindle Motor that dish 100 is rotated; With according to the magnetic head that 100 signal recording surface 100A carries out at least one side of signal reproduction and record can be invaded, the magnetic head peristome 11h of access modes opening to coiling.Box lower body 11 is relative with the signal recording surface 100A of dish 100.In addition, magnetic head peristome 11h, the side of arrival box lower body 11.

Box upper body 12 can be coiled 100 taking-up and put into, and has the dish peristome 12w of circle that makes the full view field opening of dish 100 according to the top mode of exposing dish.Box upper body 12 is connected by the outer edge with box lower body 11 or is deposited, has constituted box main body 10.

By the 1st medial surface 11u relative with constitute the 2nd medial surface 12i roughly cylindraceous of the dish peristome 12w of box upper body 12, constitute the accommodation section in disc 10d that takes in dish 100 with the signal recording surface 100A of the dish 100 of box lower body 11.As mentioned above, the 1st medial surface 11u becomes the bottom surface of accommodation section in disc 10d.

In accommodation section in disc 10d, at the 2nd medial surface 12i with coil the space that dish 100 rotatable degree are set between 100.In addition, the top of accommodation section in disc 10d becomes dish peristome 12w, and the single face that remains in the dish 100 of accommodation section in disc 10d is exposed to the outside from dish peristome 12w.

Slip-off preventing parts 23 releasably are arranged on the box upper body 12 according to its part outstanding mode on dish peristome 12w.Shown in Figure 23 and 24, be provided with two slip-off preventing parts in the present embodiment.On the other hand, on box upper body 12, setting is integrally formed with box upper body 12, from the outstanding anti-shedding part 12s of dish peristome 12w.Two slip-off preventing parts 23 and anti-shedding part 12s be roughly uniformly-spaced configuration on the circumference of dish peristome 12w, prevents to coil 100 and comes off from dish peristome 12w.Especially, under the situation about using in that disk cartridge is vertically inserted drive unit, the effect that performance comes off and prevents.

Valve 21 and 22 is set between the medial surface 11u of dish 100 signal recording surface 100A and accommodation section in disc 10d.Valve 21 and 22 has rotation hole 21u and 22u respectively, and rotation hole 21u, 22u freely rotate respectively and be entrenched in the zone beyond the accommodation section in disc 10d that is arranged at box main body 10 and be on the pair of rotary axes 11s with magnetic head peristome 11h opposition side.Therefore, valve 21 and 22 is that move at the center with rotation axis 11s, so that to open or inaccessible chucking peristome 11c in outside and magnetic head peristome 11h.

Near the rotation hole 21u and 22u of valve 21 and 22, cam (cam) 21c and driven member (follower) 22c are set respectively.Cam 21c and driven member 22c have engaged shape, constitute the interlinked mechanism 20c that the limit opens and closes valve 21 and 22 mutual interlock limits.

On the face relative of valve 21 and 22, be provided with and prevent coiling 100 scuffing or to protective seam 21p, the 22p of the intrusion of the dust of signal recording surface 100A with dish signal recording surface 100A.

Protective seam 21p and 22p can suitably select with coating and dustproof using the coating from anti-scratch nonwoven fabrics, dustproof nonwoven fabrics, the anti-scratch used.In the present embodiment, will paste as protective seam 21p, 22p or deposited by the dustproof thin slice that constitutes with nonwoven fabrics by ultrasonic.

Valve 21 and 22 by being arranged at the shutter spring 31 and 32 in accommodation section in disc 10d zone in addition respectively, makes its direction of closing towards valve 21 and 22 apply power.Also can adopt other the elastomeric element beyond the spring to apply power towards the direction of closing valve 21 and 22.

As shown in figure 24, disk cartridge 308 has dish maintaining part 21a, 21b, 22a, 22b on the end of valve 21 and 22. Dish maintaining part 21a, 21b, 22a, 22b in the state of valve 21 and 22 obturations, have the periphery of the inclined-plane of inverted cone shape with holding tray 200 on the end of valve 21 and 22.Below structure and the action thereof of dish maintaining part 21a, 21b, 22a, 22b is elaborated.

As shown in figure 23, on box main body 10 (box upper body 12), the arrowhead-shaped mint-mark or the recess 10a of the direction (arrow 1A) that the face 10f of the sign of recording and narrating the content write in the dish 100 that is contained etc. etc. and expression insert to the drive unit of disk cartridge 308 are set.In addition, be arranged at the recess 10c on a pair of side parallel respectively with the direction of insertion 1A of box main body 10, can be when drive unit loads disk cartridge 308 or disk cartridge 308 be incorporated under the situation in the recorder changer, use as the recess of the engaging of introducing usefulness or location usefulness.

Figure 25 is illustrated in not have box upper body 12 and 21,22 pairs of outside stereographic maps that stop up the state of chucking peristome 11c and magnetic head peristome 11h of 100 o'clock valve of dish.In Figure 25, be arranged at dish maintaining part 21a on the valve 21,22,21b, 22a, 22b according to the mode of the periphery of fastening not shown dish 100 and be provided with.

Figure 26 is the stereographic map that is illustrated in the state that does not have box upper body 12 and 21,22 couples of outside open chucking peristome 11c of 100 o'clock valve of dish and magnetic head peristome 11h.Is that rotate at the center by valve 21,22 with rotation hole 21u, 22u, to outside open chucking peristome 11c and magnetic head peristome 11h.In addition, when valve 21,22 moved, dish maintaining part 21a, 21b, 22a, 22b were that rotate at the center with rotation hole 21u, 22u also, become the state that separates from the periphery of not shown dish 100.

Figure 27 is illustrated in the stereographic map that 21,22 pairs of outside obturations of valve of not coiling at 100 o'clock tighten the state of peristome 11c and magnetic head peristome 11h.As shown in figure 27, dish holding member 21a, 21b, 22a, 22b are in accommodation section in disc 10d and go up outstanding state, keep not shown dish 100.On the other hand, Figure 28 is illustrated in 21, the 22 pairs of outside stereographic maps of opening the state of chucking peristome 11c and magnetic head peristome 11h of valve that do not coil at 100 o'clock.As shown in figure 28, when valve 21,22 was in open state, dish maintaining part 21a, 21b, 22a, 22b were incorporated in the dish maintaining part 10d zone in addition of box main body.

Then, adopt the formation and the action of Figure 29,30 and 31 pairs of valve 21,22 to illustrate in further detail.Figure 29 is the cut-open view at the center of connection dish 100.As shown in figure 29, on the 2nd medial surface 12i of accommodation section in disc 10d in box main body 10, the otch 10w that disturbs mutually with the valve 22 (21) that carries out on-off action is set not, and the valve incorporating section 10s of the part of the valve 22 (21) in the time of further will taking in open state is arranged in the box main body 10.In addition, as shown in figure 29, the edge part 21f and the 22f that are close on magnetic head peristome 11h and chucking peristome 11c at least when valve is inaccessible in valve 21 and 22 the edge part of being close to are overlapped in the thickness direction of dish 100.

On the other hand, as shown in figure 30, dish maintaining part 21a, 21b, 22a, 22b have, and in dish view field, have the shape that picture extends to the inclined-plane 21a ' that tilts coiling on 100 the periphery (21b ', 22a ', 22b ').Be that inclined-plane 21a ' has inverted cone shape, tilt to dish 100.When valve 21 and 22 stops up chucking peristome 11c and magnetic head peristome 11h, by inclined-plane 21a ' is docked on the rib 100c of dish 100, when controlling dish 100, press platen 100 to thickness direction, make the contact of signal recording surface face on the thin slice 21p and 22p of valve 21 and 22, will coil 100 and remain fixed on the box main body 10.In this state, because the signal recording surface 100A driving fit of dish 100 on thin slice 21p and 22p, therefore can prevent the dust that adheres to signal recording surface 100A.

In addition, by forcing that the single face of the dish 100 that exposes from the outside is rotated,, also can wiping be attached to the spot of dust on the signal recording surface 100A of dish 100 or fingerprint etc. perhaps by forcing to make valve 21 and 22 carry out on-off action.

In addition, as shown in figure 31, will on valve 21, be used for the valve opening and closing operations 21t of portion, elastic 21v that valve is opened and closed, and between these two portions and the 21k of locking projection portion that forms as integrally formed.As shown in figure 31, stop up under the state of chucking peristome 11c and magnetic head peristome 11h at valve 21, lean on the last 21k of locking projection portion chimeric by elastic 21v, according to not rotating valve 21 such fixed support box main bodies 10 with the lock hole 10k that is formed on the box main body 10.If valve 21 is fixed, the valve 22 that is connected by interlinked mechanism 20c also is fixed so.

Therefore, only by the limit from the outside by thrust etc. with the 21k of locking projection portion give as security to arrow 20A direction remove and lock hole 10k between chimeric, push the 21t of opening and closing operations portion simultaneously on the limit to arrow 20B direction, valve 21 and 22 is rotated and to outside open chucking peristome 11c and magnetic head peristome 11h, simultaneously can releasing dish maintaining part 21a, 21b, 22a, 22b be to coiling 100 maintenance.As mentioned above, can prevent taking-up dish easily by the operator.

Adopt Figure 24 and 32, the structure and the action of anti-detachment parts 23 is described in detail.Figure 32 is the slip-off preventing parts 23 that are provided with releasably, in opposite up and down direction, and the stereographic map of oblique view.Slip-off preventing parts 23, its protuberance 23a, 23b, 23c respectively with the box peristome 12w that is arranged on box upper body 12 as shown in figure 24 near recess 12a, 12b, 12c chimeric, can be freely install with loading and unloading.

In addition, adopt Figure 33, to prevent disk cartridge 308 to drive unit misplug into mechanism be described in detail.Figure 33 is the observed front elevation of the direction of insertion towards drive unit (arrow 1B) from the disk cartridge to Figure 23 308.As shown in figure 33, on box main body 10, form recess 10g from the position that mid-depth departs from its single side face, the direction of insertion 1A (Figure 23) of drive unit becomes asymmetric relatively.

Because this structure, only under the situation that embeds this recess 10g, disk cartridge can correctly insert drive unit, drive unit operate as normal to the protuberance that is arranged at drive unit.

On the other hand, oppositely disk cartridge 308 is being inserted under the situation of drive unit up and down mistakenly, the protuberance that is arranged at drive unit disturbs with the side that does not have recess 10g side, box 308 can not be inserted drive unit.In addition, though mistakenly with before and after simultaneously oppositely and under the situation that oppositely direction of above-below direction is inserted, do not have the part of recess to disturb in the protuberance that is arranged at drive unit and the side that recess 10g is set, still can not insert.Thus, can prevent to misplug into.

Also have, can carry out various distortion the disk cartridge that has illustrated in the present embodiment.

For example, when valve 21,22 was blocked state, slip-off preventing parts 23 did not have outstanding degree with 12f (Figure 24) above box upper body 12, further make the thickness attenuation of box main body 10.And, when valve 21,22 is in open state, with the opening operation interlock of valve 21,22, for example dish maintaining part 21a, 22a by slip-off preventing parts 23 below the time, push the protuberance 23a of slip-off preventing parts 23 from the below, it is outstanding that 12f makes slip-off preventing parts 23 above box upper body 12.According to this structure, when dish 100 rotates, except fully guaranteeing necessary space, can also further make the thickness attenuation of disk cartridge in accommodation section in disc 10d.

In addition, slip-off preventing parts 23 are integrally formed with box main body 10, and have folding structure, but also slip-off preventing parts 23 can be set to the pull-off type.

In addition, shutter spring 31,32 can also apply power towards the direction that valve 21,22 is opened.If the valve action each other based on interlinked mechanism is definite, in the valve 21,22 either party can be set then.

In addition, though the 21k of locking projection portion is formed on the valve 21, but also can be on the front end of the elastic by being formed at the securing rod on the box main body 10, locking projection portion and protuberance are set, by pressure-locking jut from the lock hole that is arranged at box main body, remove this protuberance and be arranged at chimeric between the recess on the valve, valve is open free to rotately.In addition in this case, securing rod also can be with shutter spring (elastomeric element), by forming with the integrally formed resin spring of box main body 10.

(the 9th embodiment)

Below, with reference to figure, the disk cartridge 309 of relevant the 9th embodiment of the present invention is described.

Shown in Figure 34 and 35, disk cartridge 309 comprises box lower body 41, box upper body 42, slip-off preventing parts 42a, 42b, 42c, 42d and a pair of valve 51 and 52.

As shown in figure 35, box lower body 41 has: the chucking peristome 41c of the mode opening that can invade according to the clamping units such as Spindle Motor that dish 100 is rotated and according to the magnetic head that 100 signal recording surface 100A carries out the reproduction of signal at least and write down a side can be invaded, the magnetic head peristome 41h of access modes opening to coiling.Box lower body 41 is relative with the signal record 100A of dish 100.In addition, magnetic head peristome 41h arrives the side of box lower body 41.

Box upper body 42 can be taken out and be put into dish 100, has the circular discs peristome 42w that makes the full view field of dish 100 openings according to the top mode of exposing disk.Box upper body 42 is connected by peripheral part with box lower body 41 or is deposited, constitutes box main body 40.

By the 1st medial surface 41u of the signal recording surface 100A of the dish 100 of relative box lower body 41 with constitute the 2nd medial surface 42i slightly cylindraceous of the dish peristome 42w of box upper body 42, constitute the accommodation section in disc 40d that takes in dish 100.Thus, the 1st medial surface 41u becomes the bottom of accommodation section in disc 40d.

In accommodation section in disc 40d, at the 2nd medial surface 42i with coil the space that dish 100 rotatable degree are set between 100.In addition, the top of accommodation section in disc 40d becomes dish peristome 42w, remains in the dish 100 of accommodation section in disc 40d, and its single face is exposed to the outside from dish peristome 42w.

Slip- off preventing parts 42a, 42b, 42c, 42d protrude in the mode of coiling peristome 42w respectively according to its part, are cut apart from box upper body 42 by crack (slit), are wholely set with box upper body 42.Slip- off preventing parts 42a, 42b, 42c, 42d prevent to coil 100 and come off from dish peristome 42w.Under the special situation about using in that disk cartridge is vertically inserted drive unit, the effect that performance comes off and prevents.Slip- off preventing parts 42a, 42b, 42c, 42d also can be situated between integrally formed by elastomeric element and box upper body 42.

Valve 51 and 52 is set between the medial surface 41u of dish 100 signal recording surface 100A and accommodation section in disc 40d.Valve 51 and 52 has rotation hole 51u and 52u respectively, rotation hole 51u, 52u freely rotate respectively be entrenched in be arranged at box main body 40 accommodation section in disc 40d beyond the zone and be in magnetic head peristome 41h opposition side on pair of rotary axes 41s on.Therefore, valve 51 and 52 is that move at the center with rotation axis 41s, so that to open or inaccessible chucking peristome 41c in outside and magnetic head peristome 41h.

Near the rotation hole 51u and 52u of valve 51 and 52, cam 51c and driven member 52c are set respectively.Cam 51c and driven member 52c have engaged shape, constitute the interlinked mechanism 50c that the limit opens and closes valve 51 and 52 mutual interlock limits.

On the face of the relative dish signal recording surface 100A of valve 51 and 52, be provided with and prevent coiling 100 scuffing or to protective seam 51p, the 52p of the intrusion of the dust of signal recording surface 100A.

Protective seam 51p and 52p can suitably select with coating and dustproof using the coating from anti-scratch nonwoven fabrics, dustproof nonwoven fabrics, the anti-scratch used.In the present embodiment, will paste as protective seam 51p, 52p or deposited by the dustproof thin slice that constitutes with nonwoven fabrics by ultrasonic.

Valve 51 and 52, by the shutter spring 61 and 62 that is arranged at accommodation section in disc 40d zone in addition respectively, the direction of closing towards valve 51 and 52 applies power.Shutter spring 61,62 also can apply power towards the direction that valve 51,52 is opened.In addition, if determine action between the valve either party in the shutter spring 61,62 only to be set so also by interlinked mechanism.

As shown in figure 35, identical with the 8th embodiment, dish maintaining part 51a, 51b, 52a, 52b are arranged on the end of valve 51 and 52.Also have,, on the zone corresponding, protuberance 51e, 52e are set with the center pit of the dish 100 of valve 51,52 according to following being described in detail.

As shown in figure 34, on box main body 40 (box upper body 42), the mint-mark or the recess 40a of arrowhead form of the direction of inserting to drive unit (arrow 1A) of expression disk cartridge 309 is set.In addition, on the parallel a pair of side of the relative direction of insertion 1A of box main body 40, recess 40c is set respectively.Recess 40c when drive unit loads disk cartridge 309, perhaps is incorporated under the situation of recorder changer at disk cartridge 309, can be used as to introduce with the recess of engaging or location usefulness to use.In addition, if only this recess 40c is arranged on the side of box 309, so also becomes and disk cartridge 309 inserted or the table back of the body wrong insertion preventing mechanism when being loaded into drive unit.On box main body 40, be provided for the handle 40e that the operator takes box 309.On this handle 40e, apply concaveconvex shape as anti-skidding usefulness.

Figure 36 represents not coil 51,52 pairs of outside stereographic maps that stop up the state of chucking peristome 41c and magnetic head peristome 41h of valve of 100 o'clock.Figure 37 represents not coil 51,52 pairs of outside stereographic maps of opening the state of chucking peristome 41c and magnetic head peristome 41h of valve of 100 o'clock.

Below, the structure and the action of valve 51,52 is described in detail.As Figure 34 and shown in Figure 35, be arranged at dish maintaining part 51a, 51b, 52a, the 52b of valve 51 and 52, identical with the 8th embodiment, in dish view field, have the shape that picture extends to the inclined-plane that tilts coiling on 100 the periphery.Be that the inclined-plane has inverted cone shape, tilt to dish 100.Thus, the performance effect identical with the 8th embodiment.

In addition, on valve 52, be used for making the 52t of opening and closing operations portion of valve switching from the outside, on valve 51, integrally formed elastic 51v and the 51k of locking projection portion that is situated between and forms by this elastic 51v.Thereby, stop up under the state of chucking peristome 41c and magnetic head peristome 41h at valve 51,52, lean on the last 51k of locking projection portion chimeric by elastic 51v, according to the mode fixed support box main body 40 that does not rotate valve 51 with the lock hole 40k that is formed on the box main body 40.If valve 51 is fixed, the valve 52 that is connected by interlinked mechanism 50c also is fixed so.

Thereby, as shown in figure 36, only from the outside by thrust etc. the 51k of locking projection portion is given as security to arrow 50A direction by the limit, remove and lock hole 40k between chimeric, push the 51t of opening and closing operations portion simultaneously on the limit to arrow 50B direction, valve 51 and 52 is rotated and to outside open chucking peristome 41c and magnetic head peristome 41h, simultaneously can releasing dish maintaining part 51a, 51b, 52a, 52b be to coiling 100 maintenance.As mentioned above, can prevent taking-up dish easily by the operator.

In addition, different with the 8th embodiment, the 51k of locking projection portion that is arranged at valve 51,52 is separately positioned on the different valve 51,52 with the 52t of opening and closing operations portion.This structure is brought into play effect to the dish with path with disk cartridge especially.Yet, in the disk cartridge that the path dish is used,, therefore be difficult to be implemented in formation locking projection portion and opening and closing operations portion on the valve in design because box integral body and valve diminish.In addition, promptly allow to locking projection portion and opening and closing operations portion are formed on the valve, being arranged at the discharge gate operating mechanism of drive unit side and the interval between the latch-release mechanism, also to become ground very narrow, or two sides' mechanism need be set in little space, therefore be difficult to carry out the design of drive unit.

Also have, though the 51k of locking projection portion is formed on the valve 51, but by the elastic that is formed at the securing rod on the box main body 40, locking projection portion and protuberance are set on the front end, by pressure-locking jut from the lock hole that is arranged at box main body, with this protuberance be arranged at chimeric removing between the recess of valve, also rotatable freely open valve.In addition, in this case, securing rod also can be with shutter spring (elastomeric element), by forming with the integrally formed resin spring of box main body 40.

Then, the protuberance 51e that is arranged on the valve 51,52, the action of 52e are described.Figure 38 is by near the cut-open view the disk center of coiling 100 centers.As shown in figure 38, when valve 51,52 was in blocked state, protuberance 51e, 52e were outstanding in center pit 100h, and dish 100 is in and 51,52 state of contact of valve.

As shown in figure 39, at valve 51,52 when open state is changed, protuberance 51e, 52e in center pit 100h, pack into dish 100 below, lift dish 100, remove and to cover thing 51,52 and to coil face contact between 100.Thus, when the on-off action of valve 51,52, can prevent that valve 51,52 from paying scar to signal recording surface 100A.The moving area of protuberance 51e, the 52e of the on-off action of valve 51,52 is all side interior than the signal record zone of signal recording surface 100A, so protuberance 51e, 52e be not connected with signal record zone, does not pay scar in the signal record zone.

Then, adopt Figure 40 and 41, the structure and the action of slip-off preventing parts illustrated in greater detail.Figure 40 is by near the cut-open view the dish periphery of coiling 100 centers, forms protuberance 42c ' (42a ', 42b ', 42d ') at the back side of slip-off preventing parts 42c (42a, 42b, 42d).As shown in figure 40, under the state of valve 51,52 for obstruction, slip-off preventing parts 42c and dish 100 almost parallels are accommodated in the thickness of disk cartridge 309.The outward appearance of the disk cartridge 309 of this state as shown in figure 36.

As shown in figure 41, under valve 51,52 opened state, rake 52f, the 51f, 51d, the 52d that are formed at valve 51,52 dock with protuberance 42a ', 42b ', 42c ', 42d ' respectively, and slip-off preventing parts 42a, 42b, 42c, 42d are given as security the top to dish 100.The outward appearance of the disk cartridge 309 of this state as shown in figure 37.According to this structure, especially from disk cartridge 309 by vertically inserted disk drive device begin to dish 100 till by chucking during, can prevent to coil 100 and come off from disk cartridge 309.On the other hand, when dish 100 is tightened, can expansion coil 100 movable spaces.In addition, according to this structure, can be further with the box main body attenuation.

Also have, under valve 51,52 opened state,, also can on rake 51c (52f, 51f, 52d), be provided for the protuberance or the recess of protuberance 42a ' (42b ', 42c ', 42d ') engaging for the temporary transient valve open state that keeps.

(the 10th embodiment)

Below, with reference to accompanying drawing, the disk cartridge 301 of relevant the 10th embodiment of the present invention is described.The principal feature of the disk cartridge 310 of present embodiment is that the slip-off preventing parts are arranged on the valve.

Shown in Figure 42 and 43, disk cartridge 310 comprises: box lower body 71, box upper body 72, slip-off preventing parts 81d, 81f, 82d and a pair of valve 81 and 82.

As shown in figure 43, box lower body 71 has: the chucking peristome 71c of the mode opening that can invade according to the clamping units such as Spindle Motor that dish 100 is rotated and according to the magnetic head that 100 signal recording surface 100A carries out the reproduction of signal at least and write down a side can be invaded, the magnetic head peristome 71h of access modes opening to coiling.Box lower body 71 is relative with the signal recording surface 100A of dish 100.In addition, magnetic head peristome 71h arrives the side of box lower body 71.

Box upper body 72 can be taken out and be put into dish 100, has the circular discs peristome 72w that will coil 100 full view field opening according to the top mode of exposing disk.Box upper body 72 is connected by peripheral part with box lower body 71 or is deposited, constitutes box main body 70.

By the 1st medial surface 71u of the signal recording surface 100A of the relative dish 100 of box lower body 71 with constitute the 2nd medial surface 72i roughly cylindraceous of the dish peristome 72w of box upper body 72, constitute the accommodation section in disc 70d that takes in dish 100.Thus, the 1st medial surface 71u becomes the bottom surface of accommodation section in disc 70d.

In accommodation section in disc 70d, at the 2nd medial surface 72i with coil the space that dish 100 rotatable degree are set between 100.In addition, the top of accommodation section in disc 70d becomes dish peristome 72w, remains in the dish 100 among the accommodation section in disc 70d, and its single face is exposed to the outside from dish peristome 72w.

Valve 81 and 82 is set between the medial surface 71u of dish 100 signal recording surface 100A and accommodation section in disc 70d.Valve 81 and 82 has rotation hole 81u and 82u respectively, and rotation hole 81u, 82u are entrenched in the zone beyond the accommodation section in disc 70d that is arranged at box main body 10 respectively freely to rotate and are on the pair of rotary axes 71s with magnetic head peristome 71h opposition side.Therefore, valve 81 and 82 is that move at the center with rotation axis 71s, so that to open or inaccessible chucking peristome 71c in outside and magnetic head peristome 71h.

Near the rotation hole 81u and 82u of valve 81 and 82, cam 81c and driven member 82c are set respectively.Cam 81c and driven member 82c have engaged shape, constitute the interlinked mechanism 80c that the limit opens and closes valve 81 and 82 mutual interlock limits.

On the face of the dish signal recording surface 100A of relative valve 81 and 82, be provided with and prevent coiling 100 scuffing or to protective seam 81p, the 82p of the intrusion of the dust of signal recording surface 100A.

Protective seam 81p and 82p can suitably select with coating and dustproof using the coating from anti-scratch nonwoven fabrics, dustproof nonwoven fabrics, the anti-scratch used.In the present embodiment, will paste as protective seam 81p, 82p or deposited by the dustproof thin slice that constitutes with nonwoven fabrics by ultrasonic.

Valve 81 and 82, by being arranged at the shutter spring 91 and 92 in accommodation section in disc 70d zone in addition respectively, the direction of closing towards valve 81 and 82 applies power. Shutter spring 91 and 92 also can apply power towards the direction that valve 81,82 is opened.In addition, if determine action between the valve, so also can only set the either party in the valve 91,92 by interlinked mechanism.

As shown in figure 43, identical with the 8th embodiment, dish maintaining part 81a, 81b, 82a, 82b are set on the end of valve 81 and 82.Equally protuberance 81e, 82e also are arranged on the valve 81,82.

Also have, such as described in detail below, slip-off preventing parts 81f, 81d, 82d respectively with valve 81,82 be integrally formed at valve 81,82 dish maintaining part 81a, 81b, 82b near.Slip- off preventing parts 81f, 81d, 82d also can be situated between integrally formed by elastomeric element and valve 81,82.

As shown in figure 42, on box main body 70 (box upper body 72), the mint-mark or the recess 70a of arrowhead form of the direction of inserting to drive unit (arrow 1A) of expression disk cartridge 310 is set.In addition, on the parallel a pair of side of the relative direction of insertion 1A of box main body 70, recess 70c is set respectively.Recess 70c, when drive unit loaded disk cartridge 310, perhaps disk cartridge 310 was incorporated under the situation of recorder changer, can use as introducing with the recess of engaging or location usefulness.In addition, if only this recess 70c is arranged on the side of box 310, so also becomes and disk cartridge 310 inserted or the wrong insertion preventing mechanism of the table back of the body when being loaded into drive unit.On box main body 70, be provided for the handle portion 70e that the operator takes box 310.On this handle 70e, apply concaveconvex shape as anti-skidding usefulness.

Figure 44 is illustrated under 100 the situation of not coiling, 81,82 pairs of outside stereographic maps that stop up the state of chucking peristome 71c and magnetic head peristome 71h of valve.Figure 45 is illustrated under 100 the situation of not coiling, the stereographic maps of the state of 81,82 couples of outside open chucking peristome 71c of valve and magnetic head peristome 71h.

Below, the structure and the action of valve 81,82 is elaborated.As Figure 42 and shown in Figure 43, be arranged at dish maintaining part 81a, 81b, 82a, 82b on valve 81 and 82, the same with the 8th embodiment, have the shape that extends to the inclined-plane that tilts coiling on 100 the periphery at picture in the dish view field.Be that the inclined-plane has inverted cone shape, tilt to dish 100.Thus, the performance effect identical with the 8th embodiment.

In addition, on valve 82, integrally formedly be used for making the 82t of opening and closing operations portion, elastic 82v that valve opens and closes and the 82k of locking projection portion that forms by them from the outside.Thus, stop up under the state of chucking peristome 71c and magnetic head peristome 71h at valve 81,82, the 82k of locking projection portion that is applied power by elastic 82v is chimeric with the lock hole 70k (Figure 44) that is formed on the box main body 70, according to not rotating valve 82 such fixed support box main bodies 70.If valve 82 is fixed, the valve 81 that is connected by interlinked mechanism 80c also is fixed so.

Thereby, as shown in figure 44, only from the outside by thrust etc. the 821k of locking projection portion is given as security to arrow 70A direction by the limit, take off and lock hole 70k between chimeric, push the 82t of opening and closing operations portion simultaneously on the limit to arrow 70B direction, valve 81 and 82 is rotated and to outside open chucking peristome 71c and magnetic head peristome 71h, simultaneously can releasing dish maintaining part 81a, 81b, 82a, 82b be to coiling 100 maintenance.As mentioned above, can prevent taking-up dish easily by the operator.

Also have, though the 82k of locking projection portion is formed at valve 82, but also locking projection portion and protuberance can be set on the front end via the elastic that is formed at the securing rod on the box main body 70, by pressure-locking jut by the lock hole that is arranged at box main body, remove this protuberance and be arranged at chimeric between the recess on the valve, make and to open valve freely to rotate.In addition in this case, securing rod also can be with shutter spring (elastomeric element), by forming with the integrally formed resin spring of box main body 70.

Then, structure and the action to slip-off preventing parts 81f, 81d, 82d illustrates in greater detail.Shown in Figure 46 and 48, under the state of valve 81,82 for obstruction, slip-off preventing parts 81f, 81d, 82d and dish 100 almost parallels, slip-off preventing parts 81f, 81d, 82d can not given prominence to above disk cartridge 310.The outward appearance of the disk cartridge 310 of this state as shown in figure 44.

Shown in Figure 47 and 49, when valve 81,82 is converted to open state, slip-off preventing parts 81f, 81d, 82d are arranged at the rake crack 70s of inboard upper wall of box 70 respectively and the rake 72s that is arranged at inboard upper wall guides, and push to the top of dish 100.In addition, on box upper body 72,,, notch 72a, 72b, 72c are arranged on the box upper body 72 according to not disturbing like that with box upper body 72 at slip-off preventing parts 81f, 81d, when 82d is pushed up.The outward appearance of the disk cartridge 310 of this state as shown in figure 45.

In addition, under the state that valve 81,82 has stopped up, because slip-off preventing parts 81f, 81d, 82d are positioned at the view field of dish 100 and on the top of dish 100, therefore also can be with dish 100 along thickness direction by being pressed on the valve 81,82, thereby, as the formation that keeps disk 100, remove dish maintaining part 81a, 81b, 82a, the 82b of valve 81,82.

According to this structure, especially from disk cartridge 310 vertical insert disk drive devices beginning to dish 100 by the chucking positions during, can prevent to coil 100 and come off from disk cartridge 310.On the other hand, at dish 100 by when chucking, the space that can expansion dish 100 can move.In addition, according to this structure, can further make the box main body attenuation.

(the 11st embodiment)

Below, with reference to accompanying drawing, the disk cartridge 311 of relevant the present invention's the 11st embodiment is described.

Shown in Figure 50 and 51, disk cartridge 311 comprises box lower body 11, box upper body 12, a pair of valve 21,22 and slip-off preventing parts 23.These inscapes and function, shown in Figure 52 to 56, because identical with the explanation in the 8th embodiment, so detailed.

Shown in Figure 50 and 51, the disk cartridge 311 of present embodiment is provided with this point of hole 20h on valve 21,22, different with the disk cartridge 308 of the 8th embodiment.

Specifically, under the state that the valve 21,22 of disk cartridge 333 has stopped up, on the corresponding zone of the center pit 100h with dish 100 of valve 21,22, hole 20h is set.Hole 20h is made of the otch 21h and the 22h that are arranged at respectively on valve 21 and 22.

According to this formation, as shown in figure 50, will coil 100 on face up and be positioned under the situation of disk cartridge 311, the dust that enters from center pit 100h by being arranged at the hole 20h of valve 21,22, not retaining in disk cartridge 311 and spills to the outside.Be that dust is not deposited on the valve 21,22.Therefore, in valve 21,22 opened state, promptly under the drive installation state, can prevent that dust is attached to the signal recording surface side 100A of dish.

Consider that disk cartridge 311 may be towards the surface on (state shown in Fig. 5), also may therefore preferably make hole 20h have roughly the same diameter towards the back side towards (box lower body be positioned at above state) with center pit 100h.By satisfying this relation, disk cartridge 311 be placed on the surface towards situation under, can prevent that dust is attached on the valve 21,22, and disk cartridge 311 be placed on the back side towards situation under, can prevent that dust directly is attached on dish 100 the signal recording surface side 100A.

Also have, in disk cartridge 311, the opening and closing operations portion that is used to open and close valve 21,22 is set at valve 22, and this point is different with the disk cartridge 308 of the 8th embodiment.Specifically, shown in Figure 51 and 57, the 22t of opening and closing operations portion, elastic 22v and the 22k of locking projection portion that forms by them and valve 22 are integrally formed.Therefore, different with the 8th embodiment, from coiling 100 sides when observing, the 22t of opening and closing operations portion is positioned at the right side of magnetic head peristome 21h.The function of the 22t of opening and closing operations portion or action are identical with the disk cartridge 308 of the 8th embodiment.

(the 12nd embodiment)

Below, with reference to accompanying drawing, the disk cartridge 312 of relevant the 12nd embodiment of the present invention is described.

Disk cartridge 312 has male part 12t and protuberance 20w is arranged around the hole 20h of valve 21,22 on the inner side surface 12i of accommodation section in disc 10d, and this some different with the disk cartridge 311 of the 11st embodiment.Below, these features are described.

Shown in Figure 58, the interior Zhou Fangxiang of male part 12t from the inner side surface 12i of box upper body 12 along dish 100 upholds, and is formed on nearly all zone of peripheral part of accommodation section in disc 10d.The section of the disk cartridge 312 when dish 100 is incorporated in accommodation section in disc 10d is shown in Figure 59.Shown in Figure 59, when valve 21 and 22 was closing state, the peripheral part of the signal recording surface 100A of dish 100 docked with male part 12t.Thus, the peripheral part of filling dish 100 and the gap between the box main body can prevent that dust from entering into signal recording surface 100A side.

Between the male part 12t of box main body 10 and box lower body 11, be provided with space 10w.When valve 21,22 was opened, shown in Figure 60,61, the part of valve 21,22 entered into space 10w, prevented that box main body 10 and valve 21,22 from interfering with each other.

Shown in Figure 59, in this structure, when valve 21,22 is closed, between dish 100 and valve 21,22, generate gap 10z with exterior.In order to clog this gap, near the center hole 100h protuberance 21w and 22w are being arranged on valve 21 and 22.Shown in Figure 58, under valve 21,22 closing state, protuberance 21w, 22w driving fit form near the complete all protuberance 20w of filling center hole 100h.Therefore, can prevent that dust is from entering into signal recording surface 100A side near the center hole 100h.

There is the possibility that contacts with the signal recording surface 100A of dish 100 in the front end of protuberance 21w, 22w.Thus, preferably the crest line with protuberance 21w, 22w becomes circle, prevents from dish is scratched.In addition, protuberance 21w, 22w also can be integrally formed respectively with valve 21,22.In this case, preferably protuberance 20w with dish 100 parts of dock on by the nonwoven fabrics of adhering or ultrasonic wave coating dish anti-scratch is used, perhaps form the coating that anti-scratch is used.In addition, also the coating used of the nonwoven fabrics used of available disk anti-scratch or anti-scratch forms protuberance 21w, 22w self, and it is deposited or fix perhaps directly to carry out ultrasonic on valve 21 and 22.

In addition, shown in Figure 59, under valve 21 and 22 blocked states, dish 100 by protuberance 20w and male part 12t under the state of valve 21 and 22 suspension space 10z, to be kept by valve 21 and 22.The major part of promptly coiling 100 signal recording surface 100A does not have face to contact with valve 21 and 22.Thereby,, on signal recording surface 100A, also have and can prevent the effect that scratches even under the situation of not implementing the processing of paste paying nonwoven fabrics that anti-scratch uses etc. on valve 21 and 22.

Figure 62 and 63 expressions have along the protuberance 21w ' of the peripheral direction expansion of dish 100 and the disk cartridge of 22w ', and Figure 62 represents valve 21,22 closing state, and Figure 63 represents the state that valve 21,22 is opened.

Shown in Figure 62 and 63, protuberance 21w ' and 22w ' are under valve 21,22 opened state, preferably than the central side of the more close accommodation section in disc of male part 12t that is arranged at accommodation section in disc 10d and be provided with.Therefore, can prevent that protuberance 21w ' and 22w ' from contacting with male part 12t or disturb.

Protuberance 21w ' and 22w ' also can be integrally formed with valve 21 and 22 difference.In this case, preferably in the part of docking with the dish 100 of protuberance 21w ' and 22w ', the nonwoven fabrics that adhesion or the deposited dish anti-scratch of ultrasonic are used perhaps forms the anti-scratch coating.In addition, also the nonwoven fabrics used of available disk anti-scratch or anti-scratch form protuberance 21w ' and 22w ' self with coating, and it is deposited, perhaps fixing directly to carry out ultrasonic on valve 21 and 22.

(the 13rd embodiment)

Below, with reference to accompanying drawing, the disk cartridge 313 of relevant the 13rd embodiment of the present invention is described.

At first, with reference to Figure 64 and 65, the general structure of disk cartridge 313 is described.Also have, identical with the 8th embodiment, have the 1st and the 2nd at the dish 100 shown in Figure 64 and 65.Figure 64 represents the 1st, the face of the sign that description is coiled usually etc.The 2nd signal recording surface 100A as dish 100 represents as the back side in Figure 65.

Shown in Figure 64 and 65, disk cartridge 313 comprises: box lower body 11, box upper body 12, a pair of valve 21,22 and slip-off preventing parts 23.

Shown in Figure 65, box lower body 11 has: the chucking peristome 11c of the mode opening that can invade according to the clamping units such as Spindle Motor that dish 100 is rotated and according to the magnetic head that 100 signal recording surface 100A carries out the reproduction of signal at least and write down a side can be invaded, the magnetic head peristome 11h of access modes opening to coiling.Box lower body 11 is relative with the signal recording surface 100A of dish 100.Box lower body 11 shaping synthetic resins and forming in addition.

Magnetic head peristome 11 reaches the side of box lower body 11, and in order to prevent by magnetic head peristome 11h the rigidity of box lower body 11 to be died down, box lower body 11 has the 11b of bridge portion that connects magnetic head peristome 11h.In addition, at the back side of box lower body 11, the pilot hole 11w that two places are used to insert the box register pin of drive unit side is set.

Box upper body 12 can be taken out and be put into dish 100, has the circular discs peristome 12w that will coil 100 full view field opening according to the top mode of exposing dish.Box upper body 12 is connected by the outer edge with box lower body 11 or is deposited, constitutes box main body 10.Box upper body 12 is also formed by synthetic resin.

By the signal recording surface 100A with dish 100 of box lower body 11 relative the 1st medial surface 11u and the 2nd medial surface 12i roughly cylindraceous that constitutes the dish peristome 12w of box upper body 12, constitute the accommodation section in disc 10d that takes in dish 100.Therefore, the 1st medial surface 11u becomes the bottom of accommodation section in disc 10d.

In accommodation section in disc 10d, at the 2nd medial surface 12i with coil the space that dish 100 rotatable degree are set between 100.In addition, the top of accommodation section in disc 10d becomes dish peristome 12w, and the dish 100 among the 10d of holding tray incorporating section is exposed to the outside with its single face from dish peristome 12w.

Slip-off preventing parts 23 releasably are arranged on the box upper body 12 according to its part outstanding mode on dish peristome 12w.Shown in Figure 64 and 65, in the present embodiment, be provided with two slip-off preventing parts 23.On the other hand, setting and box upper body 12 are integrally formed on box upper body 12, from the outstanding anti-shedding part 12s of dish peristome 12w.Two slip-off preventing parts 23 and anti-shedding part 12s are roughly uniformly-spaced disposed on the circumference of dish peristome 12w, can prevent to coil 100 and come off from dish peristome 12w.The dish docking section 12s ' of two place's convex forms is set on the part of anti-shedding part 12s in addition.The height of this dish docking section 12s ' is from coiling 100 angle, highly identical with the dish docking section 23a of slip-off preventing parts 23.

According to this structure,, also can guarantee to coil 100 stable posture even under the vertical or reverse state of disk cartridge 313, use.Thereby, especially under the situation about using under the vertical or reverse state disk cartridge 313 being inserted drive units, the effect that can bring into play comes off prevents.Also have, slip-off preventing parts 23 also can not be installed in removably on the box main body 10.Also can with dish 100 degree that can take out from box main body 10, among accommodation section in disc 10d, can rotate or the scope of lifting in, slip-off preventing parts 23 are fixed in box upper body 12.

Valve 21 and 22 is set on the same plane between the medial surface 11u of dish 100 signal recording surface 100A and accommodation section in disc 10d.Valve 21 and 22 has rotation hole 21u and 22u respectively, and the zone beyond the accommodation section in disc 10d that is arranged at box main body 10, with the pair of rotary axes 11s of the opposition side of magnetic head peristome on, rotation hole 21u, 22u are chimeric free to rotately respectively.Therefore, valve 21 and 22 can be that move so that to open or inaccessible chucking peristome 11c in outside and magnetic head peristome 11h at the center with rotation axis 11s.Valve 21 and 22 also can be formed by synthetic resin.

Annulus 21c and the pin shape 22c of portion are set respectively near the rotation hole 21u of valve 21 and 22 and 22u.Annulus 21c and the pin shape 22c of portion have engaged shape, constitute to make valve 21 and 22 interactions, the interlinked mechanism 20c that opens and closes simultaneously.Interlinked mechanism 20c also can be made of cam mechanism or other the mechanism that can carry out the interlock action of gear mechanism etc.

On the face relative of valve 21 and 22, be provided with and prevent coiling 100 scuffing or to protective seam 21p, the 22p of the intrusion of the dust of signal recording surface 100A with dish signal recording surface 100A.

Protective seam 21p and 22p can suitably select with coating and dustproof using the coating from anti-scratch nonwoven fabrics, dustproof nonwoven fabrics, the anti-scratch used.In the present embodiment, will paste as protective seam 21p, 22p or deposited by the dustproof thin slice that constitutes with nonwoven fabrics by ultrasonic.

Be arranged at the 21k of locking projection portion on the valve 21 and be arranged at the 22k of lock fit portion on the valve 22, constitute the locking mechanism 20k that makes valve 21 and 22 lockings that open and close mutually according to mode with this interlock.According to this structure,, can prevent that therefore the operator from easily making valve open owing to can open and close locking valve 21 and 22 etc.And, prevent to adhere to dust, fingerprint, scar etc. to coiling 100 signal recording surface 100A.21k of locking projection portion and valve 21 are integrally formed, and 22k of lock fit portion and valve 22 are integrally formed.

In addition, otch 21b and 22h are set on valve 21 and 22.When valve 21 and 22 was blocked state, otch 21h docked with 22h, formed hole 20h.Under the state of valve 21 and 22 obturations, hole 20h is positioned on the position corresponding with the center pit 100h of dish 100, and the diameter of the center pit 100h of the diameter of hole 20h and dish 100 about equally.Therefore, under the situation that disk cartridge 313 is placed towards surface direction, can prevent dust, under the situation that disk cartridge 313 is placed towards back side direction, can prevent that dust is attached directly on the signal recording surface side 100A of dish 100 attached on the valve 21,22.

As described in the 8th embodiment, on valve 21 and 22, when valve was blocked state, the dish maintaining part 21a, 21b, 22a, the 22b that are used for holding tray 100 were integrally formed with the form and the valve 21 and 22 that are dispersed on the dish circumference. Dish maintaining part 21a, 21b, 22a, 22b become the inclined-plane of inverted cone shape with dish 100 parts of docking.By these inclined-planes, when valve 21,22 is blocked state, can will coil 100 by being pressed in valve 21,22 sides in the limit, the limit keeps definitely.

In addition, in the present embodiment, only will coil maintaining part 21b and be provided with by the mode of elastic 21d combination, it can be moved freely to the radial direction (towards the center of dish) of dish 100 according to not being fixed on the valve 21.Therefore, even under the diameter or thickness situation devious of the dish of installing, also can not rock and definitely with dish maintaining part 21a, 21b, 22a, 22b holding tray 100.

In the opposition side of rotation hole 22u, promptly coil maintaining part 22a near, be used for the valve opening and closing operations 22t of portion of opening and closing operations valve 22 and valve 22 as integrally formed.And, installing under the situation of valve 21 and 22 on the box main body 10, the valve opening and closing operations 22t of portion is positioned at the magnetic head peristome 11h of the downside of the 11b of bridge portion.Opening and closing operations valve 21 and 22 o'clock, the 22t of opening and closing operations portion moved in magnetic head peristome 11h along the 11b of bridge portion.According to this configuration, on box main body 10, do not need to be provided in addition the space that the valve opening and closing operations 22t of portion moves.In other words, in box main body 10, do not need to design unnecessary space, can prevent that dust from entering in the box main body 10.In addition, owing to the valve opening and closing operations 22t of portion can be configured on the magnetic head peristome of box main body 10, therefore can provide the box of excellent in design.

Shown in Figure 66, valve 21 and valve 22, not butt joint in a straight line, and have the not a plurality of composition surfaces on straight line.Specifically, in chucking peristome 11c zone, valve 21 and valve thing 22 have 21f and the 22f as the 1st composition surface respectively, and in magnetic head peristome 11h zone, valve 21 and valve 22 have 21g and the 22g as the 2nd composition surface respectively.Composition surface 21f and 22f dock on the symmetrical center line of disk cartridge 313 in the present embodiment.On the other hand, composition surface 21g and 22g dock on the straight line of these about 15～16 degree in the angle that only departs from regulation from symmetrical center line.By becoming such shape, can fully guarantee the rigidity of valve 22 from forming valve 22 with incorporate shape near the valve opening and closing operations 22t of portion.

Valve 21 and 22, by the shutter spring 31 and 32 that is separately positioned on accommodation section in disc 10d zone in addition, the direction of closing towards valve 21 and 22 applies power. Shutter spring 31 and 32 is inserted into respectively on the two spring stack 11t of place that are arranged on the box lower body 11.In the present embodiment, will be turned round volute spring uses as shutter spring 31 and 32.By identical shaped spring is used as shutter spring 31 and 32, reduce cost.Except that being turned round volute spring, various elastomeric elements such as compression spring, laminated spring, resin elastomeric spring can be used as shutter spring.

Shown in Figure 65, disk cartridge 313 has correct protection (right protect) parts 40.Correct guard block 40 according on the slot part 11v of box lower body 11 slidably mode be assembled.By the correct guard block 40 that slides, move the position of protuberance 40t, is arranged at the position of the corresponding protuberance 40t of detector switch of drive unit and the state that becomes closure or open.Therefore, can forbid perhaps can be to the record of dish 100.

The box main body 10, slip-off preventing parts 23, valve 21,22, shutter spring 31,32, the correct guard block 40 that are made of above-mentioned box lower body 11 and box upper body 12 have constituted disk cartridge 313.

When box lower body 11 and box upper body 12 joints, two rotation axis 11s of box lower body 11 are chimeric with two recess 12h of box upper body 12 respectively.Therefore, improved the rigidity of rotation axis 11s,, can reduce the distortion of valve rotation periphery by the power that applies of valve 31 and 32, and then can guarantee correct valve opening amount even when valve 21 and 22 is in open state.

On box main body 10 (box upper body 12), setting can be recorded and narrated sagittate mint-mark or the recess 10a to the direction of insertion (arrow 1A) of the drive unit of disk cartridge 313 such as the index face 10f, expression of the content that writes in the dish 100 that is contained etc.

In addition, be arranged at a pair of recess 10c and the 10e of two sides of the box main body parallel 10 with direction of insertion, when drive unit loaded disk cartridge 313, perhaps box 313 was incorporated under the situation of recorder changer, can be used as to introduce with the recess of engaging or location usefulness to use.In addition, be arranged at the 10b of crack portion of a side of box main body, can the table back of the body when disk cartridge 313 is inserted drive units detect the recess of usefulness and use.

Then, with reference to Figure 67 of Figure 66 of expression valve closed condition, expression valve open mode, as Figure 68 of valve sticking department details drawing and as Figure 69 of the details drawing of the dish maintaining part of valve, the action of disk cartridge 313 is described.

At first, to disk cartridge 313 being installed under the state in the drive unit, the state of promptly taking care of describes.At this moment, shown in Figure 69, valve 21 and 22 is in inaccessible state, and shown in Figure 69, the inclined plane part 22a ' of dish maintaining part 22a by valve 22 is docked on the rib of dish 100, holding tray 100, and push to thickness direction 100t direction, make the contact of signal recording surface 100A face on the thin slice 22p of valve 22, will coil 100 and remain fixed on the box main body 10. Dish maintaining part 21a, 21b, 22b to other also form inclined plane part 21a ', 21b ', 22b ' respectively, identically with inclined plane part 22a ' will coil 100 and remain fixed on the box main body 10.

Under this state, owing to will coil 100 signal recording surface 100A driving fit on thin slice 21p and 22p, so can prevent from signal recording surface 100A is adhered to dust.In addition, force to rotate by the single face that makes the dish 100 that exposes from the outside, perhaps by making valve 21 and 22 force to carry out on-off action, also can wiping attached to the spot of dust on the signal recording surface 100A of dish 100 or fingerprint etc.

In addition, owing to open and close locking valve 21 and 22 by locking mechanism 20k, so the operator can not open valve 21 and 22 simply.Thereby signal recording surface side 100A that can protective disc 100 can prevent adhering to of dust, fingerprint, scar etc.

In addition, on the zone of the valve 21 corresponding and 22, otch 21h and the hole 20h that forms of 22h by each of valve 21 and 22 are set with dish 100 center pit 100h.Therefore, under the state that box 313 is placed, the dust that can prevent to enter from center pit 100h is attached on valve 21 and 22.

In addition, shown in Figure 70 and 71, when valve 21 and 22 obturations, in the composition surface between the valve 21 and 22, at least the composition surface 21f and 22f and composition surface 21g and the 22g that are close to of the top of magnetic head peristome 11h and chucking peristome 11c is overlapping along the thickness direction of dish 100.Therefore, even for reason according to dish 100 diameter deviation etc., valve 21 and 22 does not have under the inaccessible situation fully, perhaps because the locking between the valve 21 and 22 is incomplete, valve 21 and 22 does not have not produce the gap under the inaccessible situation on the composition surface of valve 21 and 22 fully yet.Thus, even in this case, can prevent definitely that also dust, fingerprint, scar etc. are attached on the dish 100.

In addition, shown in Figure 70, near magnetic head peristome 11h, valve 21 and 22 becomes the mode that the composition surface 21g than valve 21 more goes up according to the composition surface 22g of valve 22 and engages.On the other hand, shown in Figure 71, at the periphery of chucking peristome 11c, valve 21 and 22 becomes the mode that the composition surface 22f than valve 22 more goes up according to the composition surface 21f of valve 21 and engages.Thus, also can engage according to the different mode of angle on composition surface between a plurality of composition surfaces of valve 21 and 22 butt joints.According to this structure, owing to cooperate two pieces of valve 21 and 22 definitely, can prevent that therefore valve 21 and 22 difference are unsettled at the thickness direction of dish, also have under the state of valve 21 and 22 obturations, can improve the rigidity on the composition surface of valve 21 and 22.

Also have, in the present embodiment, though valve 21 and 22 has composition surface 21g, 22g, 21f, 22f shown in Figure 70 and 71, the position on valve 21 and 22 composition surface or the mode of joint beyond also shown in Figure 70 and 71 the position or the mode of joint.For example, also can be according to will composition surface 21g, 22g shown in Figure 70 being configured on the magnetic head peristome 11h periphery and the mode that engages is carried out.Also can carry out conversely according to being configured in chucking peristome 11c mode peripheral and that engage at composition surface 21f, the 22f shown in Figure 71.Thus, the rigidity in the time of can improving valve 21 and 22 obturations more reduces the gap on composition surface, can prevent to the inner dust of invading of box.

In addition, under the state of valve 21 and 22 obturations, be arranged on the valve 21 and 22 shown in Figure 68 protuberance 21j, 22j respectively be arranged at the box upper body 12 as shown in Figure 65 in two valve stoppers (stopper) 12f dock.Thereby, valve 21 and 22 rotations are limited, can not move from blocked state.Thus, can prevent the loosening of valve.In addition, can prevent to make the breakage of valve by operator's deliberate manipulation.Also have, because the rotation of restriction valve 21 and 22, so the position of the valve opening and closing operations 22t of portion does not change.Therefore, under the situation that disk cartridge 313 is inserted in the drive unit, the discharge gate operating mechanism of drive unit can cooperate the valve opening and closing operations 22t of portion definitely.

Then, illustrate disk cartridge 313 is installed in state in the drive unit.Shown in Figure 66, if disk cartridge 313 is inserted in the drive unit along the 1A direction, the box register pin that is arranged at drive unit so cooperates with the pilot hole 11w of disk cartridge 313, the horizontal direction of the disk cartridge 313 in the decision drive unit and the position of short transverse.

Then, the valve of the discharge gate operating mechanism that has in drive unit opens and closes parts and cooperates with the valve opening and closing operations 22t of portion shown in Figure 68, and the locking press section 21y that the latch-release parts of discharge gate operating mechanism will connect with the 21e of locking elastic portion of valve 21 pushes to the 20A direction.Thus, the 21k of locking projection portion of locking mechanism 20k separates with the 22k of lock fit portion, and locking is disengaged.Under this state, by valve switching parts valve is opened and closed parts 22t simultaneously and move along the 20B direction.Shown in Figure 67, valve 21 is a center of rotation with rotation axis 11s, with opposite rotation of the power that applies of shutter spring 31.Accompany therewith, the valve 22 that in interlinked mechanism 20c, carries out interlock too with opposite rotation of the power that applies of shutter spring 32.Thus, valve 21 is opened fully, and valve 22 also finishes open.

In addition, this moment, locking projection 21k of portion and locking press section 21y returned to original shaped position by the 21e of locking elastic portion.Thereby, the plastic yield that does not produce the 21e of locking elastic portion that forms by resin.To this, the signal recording surface 100A of dish 100 is exposed to the outside by chucking peristome 11c and magnetic head peristome 11h.In addition, the dish 100 by dish maintaining part 21a, 21b, 22a, 22b keep by rotating valve 21 and 22, from keeping becoming opening, becomes rotating state in the 10d of disk incorporating section.

Then, the Spindle Motor of drive unit and turntable, magnetic head enter into chucking peristome 11c and magnetic head peristome 11h respectively, and becoming can be to coiling 100 states that write down or reappear.

As mentioned above, push the 21k of locking projection portion from the outside by thrust etc. on the limit to the 20A direction, remove and the 22k of lock fit portion between chimeric, only push the valve opening and closing operations 22t of portion simultaneously on the limit to arrow 20B direction, valve 21 and 22 is rotated and to outside open chucking peristome 11c and magnetic head peristome 11h, simultaneously can releasing dish maintaining part 21a, 21b, 22a, 22b be to coiling 100 maintenance.Thereby owing to can prevent from easily to open valve by the operator, therefore perhaps taking-up dish can prevent adhering to the dust that coils 100, fingerprint, scar etc.

Then, illustrate that disk cartridge 313 is from pack into the state of (inject) of drive unit.When the loading mechanism of drive unit moves, separate by the valve opening and closing operations 22t of portion with the valve switching parts that the valve opening and closing operations 22t of portion cooperates.Thus, can not keep the opening of valve 21 and 22, rotate along blocking direction by shutter spring 31 and 32 valve 21 and 22 that apply power towards blocking direction.Its result, valve 21 and 22 inaccessible magnetic head peristome 11h and chucking peristome 11c.At this moment, valve 21 and 22 opens and closes locking by locking mechanism 20k.In addition, dish 100 is kept by dish maintaining part 21a, 21b, 22a, 22b, turns back to original state.Under this state, box 313 is packed into from drive unit.

Also have, shown in Figure 69, in disk cartridge 313, the height of dish docking section 12s ' that is arranged at the height of dish docking section 23a of slip-off preventing parts 23 of box main body 10 and box upper body 12 is identical.In addition, the inclined plane part 21a ' of valve 21 and 22 dish maintaining part 21a (21b, 22a, 22b) (21b ', 22a ', 22b ') is the 100u direction towards the last direction of dish 100, than dish docking section 23a and more highland formation of 12s '.Thus, though according to the mode of drive unit successively disk cartridge 313 for plumbness or situation about using under the state conversely under, the holding tray 100 that valve 21 and 22 also can be correct.For example, especially under the situation that dish 100 uses under for state conversely, when dish 100 from gripping orientation when open, dock with coiling docking section 23a and 12s ', keep stable horizontality.Under this state, valve 21 and 22 is converted to blocked state, and dish 100 is docked at inclined-plane 21a ' (21b ', 22a ', 22b '), keeps definitely by the dish maintaining part 21a (21b, 22a, 22b) that smoothly slips into along the inclined-plane.

As mentioned above, according to the disk cartridge of present embodiment, in box main body, has the structure that the dish peristome is arranged, a covering disk one side's face.In addition, the magnetic head peristome by the opening and closing operations portion with valve is arranged at box main body need not to form unnecessary gap on box main body.Thus, can prevent from box main body, to enter dust.

In addition, two valve are docked on the center line of dish in chucking peristome zone, are docked in magnetic head switching portion zone from the center line of dish and only depart from the straight line of predetermined angular.Thus, can fully guarantee the rigidity of valve from forming incorporate shape near the valve opening and closing operations portion.

In addition, because two valve open and close the formation that locks as mutual, so the operator can not easily open valve.Thereby, can prevent from dish is adhered to dust, fingerprint, scar etc.

In addition, in a plurality of dish maintaining parts, at least one is not fixed on the valve, and by the elastic combination, can carry out elastic deformation along the dish radial direction of paying the power that adds shutter spring.Thus, even have under the situation of deviation, can not rock at the diameter of the dish that is mounted yet, holding tray correctly.

(the 14th embodiment)

Below, with reference to Figure 72 to 81, the disk cartridge 314 of the 14th embodiment of the present invention is described.The disk cartridge 314 of present embodiment is paid the identical reference marks of disk cartridge 313 in the inscape identical with the disk cartridge 313 of the 13rd embodiment.

The disk cartridge 313 different points of disk cartridge 314 and the 13rd embodiment are, the shape of 12u (Figure 79), dish maintaining part 21a, 21b, 22a and the shape (from Figure 72 to 79) of 22b and the shape (Figure 72,77,78) of slip-off preventing parts 53 above the medial surface of box upper body 12.In addition, disk cartridge 314 also has dish support 60 (Figure 72 and 81).Below, serve as main describing with these differences of disk cartridge 314.

In the disk cartridge 313 of the 13rd embodiment, the height of dish maintaining part 21a, 21b, 22a, 22b along the periphery of dish 100 about equally.Relative therewith, in the disk cartridge 314 of present embodiment, shown in Figure 73 and 79, in the part of dish maintaining part 21b, 22a and 22b, projection is set.Specifically, dish maintaining part 21b, 22a and 22b contain projection, contain the 1st regional 121b, 122a and the 122b with the 1st height h1 respectively and have the 2nd regional 221b, 222a and the 222b of the 2nd height h2.On the other hand, dish maintaining part 21a only contains the 2nd regional 221a with the 2nd height h2.

Highly h2 is big than the 2nd for the 1st height h1, with the roughly the same degree of height of the dish maintaining part 21a of the disk cartridge 313 of the 13rd embodiment, 21b, 22a, 22b.That is, the dish maintaining part 21a of present embodiment, 21b, 22a, 22b except first area 121b, 122a and 122b, form dish maintaining part 21a, 21b, 22a, the 22b of the disk cartridge 313 that is lower than the 13rd embodiment.

In addition, shown in Figure 74 and 75, above the 1st regional 122a of dish maintaining part 22a, along the periphery of dish the section that the dish side uprises is set and differs from 223.The section of having is poor too for the 1st regional 122b of the top and dish maintaining part 22b of the 1st regional 121b of dish maintaining part 21b.

The 1st regional 121b, 122a and 122b when valve 21 and 22 is closed, in dish maintaining part 21b, 22a and 22b separately, are the zones that is connected with dish the earliest, thereby earlier are connected with dish 100 than the 2nd regional 221b, 222a, 222b. Dish maintaining part 21a, 21b, 22a, 22b move according to the switching of valve 21 and 22.When Figure 77 and 78 further is illustrated in valve 21 and 22 and closes and the position of the dish maintaining part 21a in when opening, 21b, 22a, 22b.In addition, in Figure 79 and 80, be illustrated in B-B section shown in Figure 78 and C-C section.

Shown in Figure 77 to 79, the inner crest face 12u in box upper body 12 opens and closes valve 21 and at 22 o'clock, and dish maintaining part 21b, the 1st regional 121b of 22a, 22b, regional 12y, 12x, the 12z that 122a, 122b pass through have depression.On the other hand, the regional 12y ', the 12x ' that pass through of the 2nd regional 221b, 222a, 222b, 12z ' depression not.Thereby the thickness of the box upper body 12 among regional 12x, 12y, the 12z is compared attenuation with regional 12x ', 12y ', 12z ' or other zone.

Shown in Figure 76 and 79, the front end of the 1st regional 122a is positioned at the following position of more going up than slip-off preventing parts 53.In addition, coil the fore-end of the 1st regional 122a of maintaining part 22a, stretch into the recess of the regional 12x of the inner crest face 12u that is arranged at box upper body 12, the recess of regional 12x is towards the fore-end of the 1st regional 122a.At the fore-end of the 1st regional 122a, because section differs from 223, only the top part of the 1st regional 122a contacts with inner crest face 12u.The 2nd regional 222a does not contact with the inner crest face 12u of box upper body 12.

In order successfully to carry out the on-off action of valve 21 and 22, the friction of the contact between the fore-end of the 1st regional 122a of preferred tray maintaining part 22a and the inner crest face 12u of box upper body 12 is little.Thus, the fore-end of the 1st regional 122a of dish maintaining part 22a becomes the protuberance shape that section becomes a circular arc part along the radial direction that coils 100.It is in order to compensate because fore-end is become the undercapacity that sharp keen shape is brought that section differs from 223, improves the forming accuracy of fore-end, is provided with easily with making into deformation simultaneously.

Shown in Figure 80, in dish maintaining part 22b, the front end of the 1st regional 122b also is positioned at the following more position of top than slip-off preventing parts 53.In addition, the fore-end of the 1st regional 122b stretches into the recess of the regional 12z of the inner crest face 12u that is arranged at box upper body 12, and the recess of regional 12z is towards the fore-end of the 1st regional 122b.Not shown, in dish maintaining part 21b, the front end of the 1st regional 121b also is positioned at the following more position of top than slip-off preventing parts 53, stretches into the recess of the regional 12y of the inner crest face 12u that is arranged at box upper body 12.

As mentioned above, make regional 12x, 12y and the 12z depression of the inner crest face 12u of box upper body 12, extend into this recess, can make the concave depth amount of disk cartridge 314 integral thinned zone 12x, 12y and 12z by a part that makes the dish maintaining part.

According to this structure, even suppose under the situation that box uses under for vertical or back side state, when dish 100 from chucking by open, when valve 21 and 22 was opened, the rake 122a ' of the 1st regional 122a of dish maintaining part 22a docked with dish 100 definitely.And, also smoothly slip into along rake 122a ', dock (Figure 74) with the rake 222a ' of the 2nd regional 222a that coils maintaining part 22a.At this moment, the rake 221a ' of the 2nd regional 221a that the dish maintaining part 21a of projection is not set also 100 docks with dish.Its result, the collaborative holding tray 100 of dish maintaining part 21a and 22a. Coil maintaining part 21b and 22b also by same action, holding tray 100.Thereby, even the disk cartridge attenuation also can be opened valve, positively holding tray definitely in all postures.

Also have, shape as the fruit tray maintaining part is still identical with the 1st embodiment, with the disk cartridge integral thinned, so shown in Figure 78, need make dish maintaining part 22a, the 21b of inner crest face 12u of box upper body 12 and regional 12x, 12x ', 12y, 12y ', 12z and the 12z ' depression that 22b integral body is passed through.In this case, in box upper body 12, will damage the disk cartridge integral intensity across very large-area thickness attenuation.Relative therewith, according to disk cartridge 314,, therefore do not damage the disk cartridge integral intensity because regional 12x, 12y, the 12z of thickness attenuation are narrow, can be with the thickness attenuation of disk cartridge.

In the present embodiment, though in 4 dish maintaining parts, 3 projections are set,, can select and coil the number of maintaining part or the corresponding various numbers of shape of valve as the 1st zone.

In the disk cartridge 314 of present embodiment, another points different with the disk cartridge 313 of the 13rd embodiment are the formation of slip-off preventing parts 53.

Shown in Figure 72, slip-off preventing parts 53 have the shape after the part that cuts plectane.Be provided with the roughly corresponding otch 54 of slip-off preventing parts 53 so that be connected with the dish opening 12w of box upper body 12, cooperate with otch 54 according to slip-off preventing parts 53 rotating modes.Shown in Figure 77, slip-off preventing parts 53 are held by a part outstanding mode on the dish peristome 12w of box upper body 12 of rotating according to slip-off preventing parts 53.In addition, shown in Figure 78, rotate, make slip-off preventing parts 53 be accommodated in the box upper body, even outstanding part also can keep the slip-off preventing parts not under the state of dish opening 12w by making slip-off preventing parts 53.Exist under the situation of the problem that slip-off preventing parts 53 come off from otch 54, cooperate with the side of the box upper body 12 of side that forms slip-off preventing parts 53 and otch 54 concavo-convex etc. also can be set.

According to this structure,, so can make the thickness attenuation of disk cartridge 314 integral body because the thickness that can make slip-off preventing parts 53 and box upper body 12 is much at one top.

In the disk cartridge 314 of present embodiment, the place with feature is, shown in Figure 72,77,78 and 81, dish receiving portion 60 is set in the bottom of the accommodation section in disc that the lower inside 11u and the inner side surface 11i of box lower body are constituted week.Dish receiving portion 60 has the top 60a parallel with the lower inside 11u of box lower body.

Valve 21 and 22 is in blocked state, when dish 100 is held by the dish maintaining part, and near the top 60a contact of the portion 60 that accepts the whole truth the periphery of the signal recording surface 100A of dish 100.Thus, can prevent that dust is attached on the signal recording surface 100A of dish 100, perhaps dust accumulates on the lower inside 11 of box lower body.

The shape of dish receiving portion 60 is the shape beyond Figure 81 also.For example, shown in Figure 82, dish receiving portion 76 can be set also, wherein, dish receiving portion 76 has the cone-shaped that mode that the lower inside 11u according to the box lower body contacts with inner side surface 11i is provided with.In this case, valve 21 and 22 is in blocked state, and when dish 100 was held by the dish maintaining part, the periphery of the signal recording surface 100A of dish 100 contacted with dish receiving portion 76.

(the 15th embodiment)

Below, with reference to Figure 83 to 87, the disk cartridge 315 of the 15th embodiment of the present invention is described.In the disk cartridge 315 of present embodiment, the inscape identical with the disk cartridge 314 of the 14th embodiment paid identical reference marks.

Shown in Figure 83, disk cartridge 315 is different with disk cartridge 314 at following point: the zone that contacts with the valve 21 and 22 of the lower inside 11u of box lower body 11, and 4 kinds of recesses 85,86,87,88a～88c are set on the following 21v of valve 21 and 22 and the 22v.These 4 kinds of recesses are described in order.Also have, under the situation of the disk cartridge of the dish that keeps 12cm, concave depth is for example from 0.1mm to 0.3mm.

According to such shown in Figure 85 of Figure 84 that represents valve 21 and 22 closed conditions and expression open mode, at first when valve 21 and 22 opens and closes, in the zone of the lower inside 11u of the box lower body 11 that is connected with dish maintaining part 21a, 21b, 22a and the 22b of valve 21 and 22, the 1st recess 86 is set.

Dish maintaining part 21a, 21b, 22a and 22b are sandwiched by box upper body 12 and 11 almost very close to each otherly.During the combination of disk cartridge 315, perhaps according to the dimensional discrepancy of the parts that constitute disk cartridge 315, there are the possibility that contacts with box upper body 12 and lower body 11 high strength in dish maintaining part 21a, 21b, 22a and 22b.Thus, the friction between dish maintaining part 21a, 21b, 22a and 22b and box upper body 12 or the box lower body 11 becomes big, and it is unstable that valve 21 and 22 on-off action become ground, simultaneously by friction generation dust.

By the 1st recess 86 is set, owing to form the gap, therefore can reduce this friction in the bottom of dish maintaining part 21a, 21b, 22a and 22b, make the on-off action of valve 21 and 22 stable, can reduce by fricative dust.

When valve 21 and 22 was closed, the 2nd recess 87 was set at the zone that the outline edge portion of valve 21 and 22 is positioned at.Shown in Figure 84 and 86, preferred the 2nd recess 87 comprises the line of the lower inside 11u of the box lower body 11 corresponding with the outline edge portion of valve 21 and 22, is provided with along its outside and inboard.

Because disk cartridge 315 exposes the single face of dish and takes in, shown in Figure 86, dish 100 can be pushed like that according to shown in the arrow A like that.Though the signal recording surface 100A for protective disc 100 is provided with nonwoven fabrics 21s and 22s, till the outline edge portion of valve 21s and 22s, do not pasted fully.For this reason, if press platen 100 shown in arrow A, valve 21 and 22 outline edge portion contacts with the signal recording surface 100A of dish 100 so, might bring scar to signal recording surface 100A.

But by the 2nd recess 87 is set, valve 21 and 22 outline edge portion can be out of shape according to the mode that its part stretches in the 2nd recess 87.Thus, the power that dispersion is pushed, the outline edge portion of valve 21 and 22 that prevents contacts with signal recording surface 100A high strength.

The 3rd recess comprises: the 3rd recess 88a that is provided with on lower inside 11u according to the mode that surrounds chucking peristome 11c and magnetic head peristome 11h; Under valve 21 and 22 closing state, the 3rd recess 88b that on the zone of valve 21 and 22 nonoverlapping lower inside 11u, is provided with; Under valve 21 and 22 closing state, the 3rd recess 88c that on the zone of valve 21 and 22 overlapping lower inside 11u, is provided with.The 3rd recess 88b and 88c are set to circular-arc along the medial surface of accommodation section in disc.In addition, in the present embodiment, 3 the 3rd recess 88a are set.

Disk cartridge 315 though dish receiving portion etc. has been installed, is used to prevent that dust from entering in the disk cartridge, and is provided with the various structures that are used to prevent adhere to dust on the signal recording surface of dish, very difficultly prevents entering or adhering to of dust fully.

The 3rd recess has and stores the dust function that enters in the above-mentioned disk cartridge 315.Specifically, according to the on-off action of valve 21 and 22, dust moves to these the 3rd recesses.Do not contact in case enter the dust of the 3rd recess, do not move from the 3rd recess once more so, and stay in the 3rd recess with valve 21 and 22.Dust is stored in the 3rd recess by the way, can reduces the action of the valve that brings by dust dust bad or that produce by friction.Also have, this effect also can be obtained by above-mentioned the 1st recess 86 and the 2nd recess 87.Therefore, above-mentioned the 1st recess the 86, the 2nd recess 87 and not necessarily all have to 88c from the 3rd recess 88a, even only have any, it is bad or play dirt by what friction brought also can to reduce the action of the valve that brought by dust at least.

In addition, for more effectively remove enter into valve 21 and 22 and the lower inside 11u of box lower body 11 between dust and be stored in the 2nd recess 87 etc., 21v and 22v below valve 21 and 22 also can further be provided with recess 85 along outline edge portion.In this case, shown in Figure 84, under valve 21 and 22 closing state, preferably recess 85 is arranged on the side than the 2nd recess 87 more close box centers.In addition, shown in Figure 86, under valve 21 and 22 closing state, the 2nd recess 87 of the lower inside 11u of preferred valve 21 and 22 recess 85 and box lower body 11 is not communicated with.

By recess 85 is set, valve 21 and 22 outline edge portion be easy deformation more.Thereby, even apply the power shown in the arrow A, also can obtain making the outline edge portion of valve 21 and 22 to contact with signal recording surface 100A high strength to coiling 100, the possibility of paying scar on signal recording surface 100A becomes the littler effect in ground.Also have, by deposited in recess 86,87,88a, 88b, 88c or paste nonwoven fabrics and be provided with, gap that can the landfill box main body, and can further prevent from securely to enter dust from the outside.

In the present embodiment, though show the example that various recesses are set in the disk cartridge 314 of the 14th embodiment, also these recesses can be arranged in the disk cartridge of the 8th～13 embodiment.

(the 16th embodiment)

Below, with reference to Figure 88～93, the disk cartridge 316 of the 16th embodiment of the present invention is described.The disk cartridge 316 of present embodiment is paid identical reference marks in the inscape identical with the disk cartridge 313 of the 13rd embodiment.

Shown in Figure 88, the disk cartridge 316 of present embodiment, with the 1st side 10p of box main body of the direction of insertion 1A approximate vertical of dish on have the 1st 22t of opening and closing operations portion, on the 2nd side 10q, have the 2nd opening and closing operations portion 93.Wherein, the 1st 22t of opening and closing operations portion has the opening and closing operations 22t identical construction with the disk cartridge of the 13rd embodiment.

Shown in Figure 89, the 2nd opening and closing operations portion 93 is the gear shapes with the cave that can insert the rotation axis 11q that is arranged at box lower body 11.When the 2nd opening and closing operations portion 93 is inserted rotation axis 11q, from the mode that the 2nd side 10q of box main body 10 exposes, opening 11r is set in the side of box lower body 11 according to its part.Rotation axis 11q also can be arranged on the box upper body 12.

In two valve 21 of open or inaccessible magnetic head peristome 11h that is arranged at box lower body 11 and chucking peristome 11c and 22, integrally formed as the valve 22 and the 1st 22t of opening and closing operations portion of the 1st shutter member.On the other hand, near as the dish maintaining part 21b of the lateral surface of the valve 21 of the 2nd shutter member, the sector gear 21m that cooperates with the 2nd opening and closing operations portion 93 of gear-like is set.The center of sector gear 21m is consistent with the rotation hole 21u of valve 21.In addition, with sector gear 21m adjacency recess 21n is set.The space that recess 21n, the 2nd opening and closing operations portion 93 that makes gear-like and sector gear 21m can cooperate.

In order to use the 1st 22t of opening and closing operations portion, valve 21 and 22 is opened and closed, at first shown in Figure 90, remove the mated condition of the locking mechanism 20k that constitutes by 21k of locking projection portion and the 22k of lock fit portion.And, shown in arrow 22w, the 1st 22t of opening and closing operations portion is slided along the 1st side 10p of box.Thus, shown in Figure 91, the motion of valve 22 is situated between and is delivered to valve 21 by interlinked mechanism 20c, and valve 21 and 22 is worked in coordination with, open magnetic head peristome 11h and chucking peristome 11c.

On the other hand,, valve 21 and 22 is opened and closed in order to use the 2nd opening and closing operations portion 93, at first shown in Figure 90, the mated condition of the 20k of mechanism that unlocks.Then, the 2nd opening and closing operations portion 93 is rotated like that shown in arrow 93A.So, cooperating with the 2nd opening and closing operations portion 93, sector gear 21m is that the center begins to rotate with rotation hole 21u.This motion becomes the opening operation of valve 21.Be delivered to valve 22 because the motion of valve 21 is situated between by interlinked mechanism 20c, so valve 21 and 22 is worked in coordination with open magnetic head peristome 11h and chucking peristome 11c.Shown in Figure 91, when open fully magnetic head peristome 11h of valve 21 and 22 and chucking peristome 11c, the part of the 2nd opening and closing operations portion 93 stretches into the recess 21n that is arranged at valve 21.

Closing valve 21 and at 22 o'clock, the 1st 22t of opening and closing operations portion is slided with the direction opposite with 22w, the 2nd opening and closing operations portion 93 is slided with the direction opposite with 93A.In the present embodiment, owing to shutter spring 31 and 32 are set according to the mode that applies power on the direction of closing at valve 21 and 22, if therefore in the 1st 22t of opening and closing operations portion and the 2nd opening and closing operations portion 93, do not apply opposite valve 21 and the 22 open power of making of power with shutter spring 31 and 32, the power that perhaps keeps open state can not closed valve 21 and 22 even do not carry out above-mentioned action so yet.

The disk cartridge 316 of present embodiment is set at the direction of insertion vertical face and parallel face two sides of the opening and closing operations portion of valve 21 and 22 to dish.Thereby, even only corresponding opening and closing operations portion with valve is arranged at the disk drive device to the disk cartridge of the vertical side of the direction of insertion of disk cartridge, even only corresponding opening and closing operations portion with valve is arranged at the disk drive device to the disk cartridge of the parallel side of the direction of insertion of disk cartridge, also can be to the dish recording signal in the disk cartridge that is accommodated in present embodiment.

In addition, according to the disk cartridge 316 of present embodiment, the 2nd opening and closing operations portion 93 that is arranged at the parallel side of the direction of insertion of disk cartridge 316 has gear shape.Thus, the discharge gate operating mechanism that is arranged at disk drive device also can be formed by the various gears that cooperate with the 2nd opening and closing operations portion 93, like this, can be opened and closed the valve 21 and 22 of disk cartridge 316 definitely by fairly simple mechanism.

Also have, in the above-described embodiment, sector gear 21m is arranged near the dish maintaining part 21b.If be arranged at this position, the distance of 21 rotation hole 21u is diminished, the length of open fully valve 21 necessary sector gear 21m shortens.But the formation place of sector gear 21m is not limited to this position.For example shown in Figure 92 and 93, also can on the position of the center of big body disc on the circular arc extended line of sector gear 21m winding, sector gear 21m be set, the 2nd opening and closing operations portion 93 be set according to the mode that cooperates with sector gear 21m.If the 2nd opening and closing operations portion 93 is set on this position, the length of open so fully valve 21 necessary sector gear 21m is elongated, and is also elongated apart from the distance of rotation hole 21u.Thus, big corresponding with the distance change between fulcrum and the application point, by littler power the 2nd opening and closing operations portion 93 is rotated, valve 21 and 22 is opened and closed.

(the 17th embodiment)

Below, with reference to Figure 94～97, the disk cartridge 317 of the 17th embodiment of the present invention is described.In the disk cartridge 317 of present embodiment, in the inscape identical, pay identical reference marks with the disk cartridge 316 of the 16th embodiment.

Shown in Figure 94, the disk cartridge 317 of present embodiment has the 2nd opening and closing operations portion 94 on the 2nd side 10q, replaced the 2nd opening and closing operations portion 93 of the disk cartridge 316 of the 16th embodiment.

Shown in Figure 95, the 2nd opening and closing operations portion 94 is the opening 11r links slidably along the side that is arranged at box lower body 11, its middle part general curved.In addition, in the end of the 2nd opening and closing operations portion 94 projection 94a is set, near the groove 21i this projection 94a and the dish maintaining part 21b that is arranged at valve 21 cooperates.

Figure 96 and 97 represents the valve 21 of disk cartridge 317 and the state and the opened state of 22 obturations respectively.By the 1st 22t of opening and closing operations portion is slided in the other direction along the direction of arrow 22w or its, valve 21 and 22 is opened and closed, this point is identical with the content that illustrates in the 13rd and 16 embodiment.

Valve 21 and 22 is opened and closed, at first shown in Figure 96, the mated condition of the 20k of mechanism that unlocks.Then, the 2nd opening and closing operations portion 94 is slided shown in arrow 94B.By this action, apply power along the mode that the direction of arrow 94B moves according to the projection 94a that makes the 2nd opening and closing operations portion 94.Its result, valve 21 is opened rotation hole 21u as the center.Be delivered to valve 22 because the motion of valve 21 is situated between by interlinked mechanism 20c, so valve 21 and 22 is worked in coordination with open magnetic head peristome 11h and chucking peristome 11c.By the 2nd opening and closing operations portion 94 is slided with the direction opposite with arrow 94B, it is identical with the 16th embodiment to make valve 21 and 22 be in the point of blocked state and the power that applies shutter spring 31 and 32.

The disk cartridge of the present embodiment also disk cartridge with the 16th embodiment is identical, even only corresponding opening and closing operations portion with valve is arranged at the disk drive device to the disk cartridge of the parallel side of the direction of insertion of disk cartridge, even only corresponding opening and closing operations portion with valve is arranged at the disk drive device to the disk cartridge of the parallel side of the direction of insertion of disk cartridge, also can be to the dish recording signal in the disk cartridge that is accommodated in present embodiment.

In addition, shown in Figure 96 and 97, for open valve 21 and 22, the direction of insertion (1A) of operating the direction (94B) of the 2nd opening and closing operations portion 94 and disk cartridge is not mutually on the contrary, and is and parallel.Therefore, if the projection that will cooperate with the 2nd opening and closing operations portion 94 etc. is arranged at disk drive device, in the time of the disk cartridge of present embodiment can being inserted disk drive device so, projection cooperates with the 2nd opening and closing operations portion 94, and with the valve 21 and 22 of the insert action interlock opening disk cartridge of disk cartridge.Therefore, the discharge gate operating mechanism that is arranged at disk drive device is become simple.

(the 18th embodiment)

Below, with reference to Figure 98～101, the disk cartridge 318 of the 18th embodiment of the present invention is described.In the disk cartridge 318 of present embodiment, in the inscape identical, pay identical reference marks with the disk cartridge 316 of the 16th embodiment.

Shown in Figure 98, the disk cartridge 318 of present embodiment has the 2nd opening and closing operations portion 96 on the 2nd side 10q, replaced the 2nd opening and closing operations portion 93 of the disk cartridge 316 of the 16th embodiment.

Shown in Figure 99, the 2nd opening and closing operations portion 96 is the magnetic head opening features that are connected with the dish maintaining part 21a of valve 21.In the end of magnetic head unit projection 96a is set, projection 96a along be arranged at box lower body 11 the side opening 11r slidably.The 2nd opening and closing operations portion 96 also can be integrally formed with valve 21.

Figure 100 and 101 represents the valve 21 of disk cartridge 318 and the state and the opened state of 22 obturations respectively.By the 1st 22t of opening and closing operations portion is slided with the direction of arrow 22w or the direction opposite with it, valve 21 and 22 is opened and closed, this point is identical with the explanation in the 16th and 17 embodiments.

Make the on-off action of valve 21 and 22 in order to use the 2nd opening and closing operations portion 96, at first shown in Figure 100, the mated condition of the 20k of mechanism that unlocks.Then, the projection 96a that makes the 2nd opening and closing operations portion 96 slides shown in arrow 96B.By this action, be the center at the fore-end of valve 21 with rotation hole 21u, like that apply power as extending to valve 21 along the direction of arrow 96C.Be delivered to valve 22 because the motion of valve 21 is situated between by interlinked mechanism 20c, so valve 21 and 22 is worked in coordination with open magnetic head peristome 11h and chucking peristome 11c.Under the situation of closing valve 21 and 22, carry out opposite action.

The disk cartridge of the present embodiment also disk cartridge with the 16th embodiment is identical, even only corresponding opening and closing operations portion with valve is arranged at the disk drive device to the disk cartridge of the vertical side of the direction of insertion of disk cartridge, even only corresponding opening and closing operations portion with valve is arranged at the disk drive device to the disk cartridge of the parallel side of the direction of insertion of disk cartridge, also can be to the dish recording signal in the disk cartridge that is accommodated in present embodiment.

In addition, if valve 21 and the 2nd opening and closing operations portion 96 are integrally formed, can reduce the number of the parts that constitute disk cartridge so.Thus, the manufacturing cost of can or cut down disk cartridge, or simplify manufacturing process.

In 16 to 18 above-mentioned embodiments, the 2nd opening and closing operations portion is arranged on the side on the left of the direction of insertion of disk cartridge.But the formation place of the 2nd opening and closing operations portion is not limited to the side shown in the above-mentioned embodiment.For example, also can be arranged at the side (10r shown in Figure 88) on direction of insertion right side to dish.Perhaps, also the 2nd opening and closing operations portion can be arranged at the back side (10t shown in Figure 88) of disk cartridge.In this case, for example, the 2nd opening and closing operations portion can be set in the 18th embodiment at the back side of disk cartridge if the 2nd opening and closing operations portion 96 of the band shape that has illustrated does not need additional big change so.

(the 19th embodiment)

Below, with reference to Figure 102 and 103, the disk cartridge 319 of the 19th embodiment of the present invention is described.In the disk cartridge 319 of present embodiment, in the inscape identical, pay identical reference marks with the disk cartridge 313 of the 13rd embodiment.

The point that the disk cartridge 319 of present embodiment has feature is, on dish maintaining part 21b, 22a and 22b rotation-preventing member 97 is set respectively.Be provided in addition nonwoven fabrics is deposited over recess 89 on valve 21 and 22 by ultrasonic.

Specifically, on dish maintaining part 21b, 22a and 22b, hole 21q, 22r and 22q are set, in each hole 21q, 22q and 22r, imbed rotation-preventing member 97.Shown in Figure 103, rotation-preventing member 97, its part is outstanding from inclined-plane 21b ' (22a ', 22b ') respectively in dish maintaining part 21b (22a, 22b), and by dish maintaining part 21a, 21b, 22a, when 22b keeps, rotation-preventing member 97 docks with the periphery of coiling 100 at dish 100.Rotation-preventing member 97 has elasticity, is preferably formed by the big material of coefficient of friction, for example preferred rotation-preventing member 97 that is made of rubber that adopts.

In addition, rotation-preventing member 97 if be set at least one of coiling among maintaining part 21a, 21b, 22a, the 22b, then can be brought into play and rotate the effect that prevents.But, in order to prevent to coil 100 rotation more accurately, preferred 3 such as shown in the figure rotation-preventing members 97 are set.

According to this structure, coiling 100 when remaining in dish maintaining part 21a, 21b, 22a, 22b, even the operator deliberately makes dish 100 rotate, by not making dish 100 rotations with the little power of the motion of dish 100 rotation-preventing members that docks 97.Thereby, even the operator for example deliberately will coil 100 by being pressed on the valve 21,22, dish 100 is rotated, also can prevent to coil 100 and rotate.Thus, in being arranged at 21,22 nonwoven fabrics, under the situation of the hard dust of clamping, can prevent action, on dish, pay scar by above-mentioned operator.

In addition, by rotation-preventing member 97 is set, also can prevent to rock at dish maintaining part inner disc 100.

Shown in Figure 102, valve 21 and 22 has the recess 89 that is used for the deposited nonwoven fabrics of ultrasonic on the face that the signal recording surface with dish 1 contacts.Recess 89 is in Figure 102, according to the mode of the periphery that surrounds the part that contacts with the signal recording surface of valve 21 and 22 but be provided with.In addition, also can be arranged in the area inside of the recess 89 that surrounds its periphery.The formation zone of recess 89 is not limited to the shape shown in Figure 102, also can paste the device of nonwoven fabrics on valve 21 and 22 definitely.Nonwoven fabrics and valve 21 and 22 are deposited by ultrasonic in this recess 89.By recess 89 is set,, can avoid contacting with coiling even, sclerosis portion or jut are accommodated in the recess 89 by under the sclerosis portion of the deposited generation nonwoven fabrics of ultrasonic or the situation from the jut of the nonwoven fabrics of the resin material that constitutes valve 21 and 22.Thus, can prevent from dish is adhered to scar.This recess 89 from above-mentioned the 1st to 18 embodiment, also is provided with under the situation of nonwoven fabrics, is preferably formed in valve.

(the 20th embodiment)

Below, the 20th embodiment of disk cartridge of the present invention is described.

At first, with reference to Figure 104, the summary of the structure of disk cartridge 320 is described.Disk cartridge 320 has box lower body 11, box upper body the 12, the 1st valve the 21, the 2nd valve 22, slip-off preventing parts 23, protecting component 24 and rotatable parts 25.These parts are suitable for being formed by synthetic resin etc.In addition, these parts do not need to adopt identical materials to form, and consider desired intensity of each parts or outward appearance etc., and decision is suitable for the optimal material of each parts.

Box lower body 11 shown in Figure 104, has lower inside 11u.On lower inside 11u, the chucking peristome 11c of the mode opening that can invade according to the clamping units such as Spindle Motor that dish 100 is rotated, with can invade the magnetic head peristome 11h of the mode opening of addressable dish 100 according to the magnetic head of record that carries out signal (information) and/or reproduction.Magnetic head peristome 11h is communicated with chucking peristome 11c.Magnetic head peristome 11h is provided with according to the mode of the side that reaches box lower body 11, with the side of the set side adjacency of magnetic head peristome 11h on opening 11r is set.

As following being elaborated, on lower inside 11u, the groove 11e and the 11f of the front end of the protuberance 25e that accepts to be arranged on the rotatable parts 25 and 25f is set. Preferred groove 11e and 11f do not connect lower inside 11u.In addition, be arranged at the rotation axis 37 of the 1st valve 21 and the 2nd valve 22 respectively with accepting and 38 rotation hole 39 is arranged on the lower inside 11u.Preferred rotation hole 39 does not connect lower inside 11u yet.In addition, in the present embodiment,, rotation hole 39 is set, also can on the 1st valve 21 and the 2nd valve 22, rotation hole be set, on box lower body 11, rotation axis is set at the box lower body though on the 1st valve 21 and the 2nd valve 22, rotation axis 37 and 38 are set.

Box upper body 12 has the dish peristome 12w of circle of the full view field of vent disk 100, and dish peristome 12w is stipulated by side 12i cylindraceous.Dish 100 can be arranged on the box by this dish peristome 12w.Otch 12g is set in the part of side 12i.

On the top 12d of box upper body 12 otch 12j is set.This otch 12j cooperates with slip-off preventing parts 23.Though not shown, at slip-off preventing parts 23 and above the box on the 12d, chimeric protuberance and the such fitting portion of recess mutually is set, so that slip-off preventing parts 23 are not easy to come off from box upper body 12.Under situation about slip-off preventing parts 23 being installed in the box upper body 12, the part of slip-off preventing parts 23 is stretched out to dish peristome 12w.Also have, in the present embodiment,, the otch 12j of a part of removing 12d above the box fully is set in order to make the box main body attenuation as far as possible.But, even a little under the also passable situation of thickening, on disk cartridge, be provided with on the 12d and forming the such otch of recess, the also configurable slip-off preventing parts corresponding with its otch than the disk cartridge of present embodiment.For example, the otch and the slip-off preventing parts 23 that also can in the disk cartridge of present embodiment, adopt the disk cartridge 308 of the 8th embodiment to be had.

In addition, on box upper body 12 on the 12d, form slip-off preventing parts 12s that is integrally formed, that stretch out to peristome 12w with top 12d.Slip- off preventing parts 12s and 23 prevents to coil 100 and comes off from dish peristome 12w.Under the special situation about using in that disk cartridge is vertically inserted drive unit, the effect that performance comes off and prevents.To coil under the situation of taking out, remove chimeric between slip-off preventing parts 23 and the box upper body 12, slip-off preventing parts 23 12 taken out from the box upper body, for example, coil 100 from lifting near the otch 12j from disk cartridge.The number of slip-off preventing parts is also more than 3.In addition, the slip-off preventing parts with other shape can be set also, the position of the position that the slip-off preventing parts are set beyond also shown in Figure 104.

Box upper body 12 and box lower body 11 are bonding or deposited by the outer edge, perhaps engage by the link that adopts screw etc., constitute box main body.In addition, the inboard 12i of the lower inside 11u of box lower body 11 and box upper body 12 constitutes the accommodation section in disc of taking in dish 100.

In accommodation section in disc, the space of side 12i regulation, to rotate discontiguous scope also big than dish 100 even coil 100, and dish 100 can rotate in the incorporating section.The top of accommodation section in disc as dish peristome 12w by opening, be set at the dish 100 in the accommodation section in disc the 1st 100A be exposed to the outside from dish peristome 12w comprehensively.On the other hand, as the 2nd 100A of dish 100 information recording surface towards lower inside 11u.

By adopting this structure, compare with the situation of the two-sided existing box that forms covering disk, can make box 320 attenuation.In addition, because the sign face that can make dish exposes from dish peristome 12w, the content etc. of therefore confirming to write the dish of sign face (the 1st face) 100B becomes ground easily.In addition, expose by the pattern that makes the sign face, it is outstanding that the design of integral body of taking in the disk cartridge of dish also becomes ground.

The 1st valve 21 and the 2nd valve 22 are set on the lower inside 11u of box lower body 11, when dish 100 is incorporated in the disk cartridge 320, are positioned between signal recording surface (the 2nd face) 100A and lower inside 11u of dish 100.The 1st valve 21 and the 2nd valve 22 have rotation axis 37 and 38 respectively, and rotation axis 37 and 38 is inserted in the rotation hole 39 of box lower body 11.Thus, the 1st valve 21 and the 2nd valve 22 rotate rotation axis 37 and 38 as rotation axis, and magnetic head peristome 11h and chucking peristome 11c is open or inaccessible to the outside.When the 1st valve 21 and the 2nd valve 22 were in open state, the part of the 2nd 100A of dish 100 was exposed to the outside from magnetic head peristome 100h.

When the 1st valve 21 and the 2nd valve 22 are in blocked state, with the center pit overlapping areas of the dish 100 that is accommodated in accommodation section in disc in, on the 1st valve 21 and the 2nd valve 22, otch is set according to the mode that forms hole 20h.On the periphery of the otch of the 1st valve 21 and the 2nd valve 22, form protuberance 21w and 22w.When the 1st valve 21 and the 2nd valve 22 were in blocked state, protuberance 21w and 22w connected airtight, and constituted near the protuberance 20w that full week contact with the center pit 100h of dish 100.Be described in detail at the 12nd embodiment, protuberance 20w prevents that dust is from the signal recording surface 100A side intrusion of center pit 100h to dish 100.On protuberance 21w and 22w, form projection 35 and 36. Projection 35 and 36 above, top also high than protuberance 21w and 22w.

In addition, when the 1st valve 21 and the 2nd valve 22 were in blocked state, for 100, the 1 valve 21 of holding tray in accommodation section in disc have dish maintaining part 21b, the 2nd valve 22 had dish maintaining part 22a and 22b.These dish maintaining parts are carried out the identical action of dish maintaining part that illustrated the from the 8th to 19 embodiment.In the 8th to the 19th embodiment, though also be provided with dish maintaining part 21a in the 1st valve 21, in the present embodiment, the 1st valve 21 is provided with protuberance 27a, replacement dish maintaining part 21a.When the 1st valve 21 and the 2nd valve 22 were in blocked state, protuberance 27a prevented to coil 100 side and exposes from the chucking peristome 11h of the side that arrives box lower body 11.

The 1st valve 21 and the 2nd valve 22, not butt joint point-blank, and have not a plurality of composition surfaces on straight line.Specifically, though composition surface 21f and 22f are positioned on the symmetrical center line of disk cartridge 320 substantially, composition surface 21g and 22g only depart from the angle of regulation from symmetrical center line, are departing from docking of about 15 to 18 degree here on straight line.The effect of this structure has been described in detail in the 13rd embodiment.In addition, illustrate in the 13rd embodiment that composition surface 21g and 22g are overlapping on the thickness direction of dish 100.

Below, being described in detail, the 1st valve 21 and the 2nd valve 22 have the guiding groove 27e and the 28f that cooperate with the protuberance 25e and the 25f of rotatable parts 25. Protuberance 25e and 25f as rotatable parts 25 penetrate, and guiding groove 27e and 28f connect the 1st valve 21 and the 2nd valve 22.

Rotatable parts 25 comprise the dish receiving portion 25a that is arranged at sidewall 25i and sidewall 25i bottom.Sidewall 25i has cylindric around the such size and dimension in the side of the dish 100 that is contained, by otch 25d, 25g and 25h by disjunction.Dish receiving portion 25a has flat ring-type, and otch 25c is set on its part.When the 1st valve 21 and the 2nd valve 22 were in open state, rotatable parts 25 rotated, and otch 25c and magnetic head peristome 11h are overlapping.Near otch 25d, be provided for making the movable projection 25m of protecting component 24.

Below dish receiving portion 25a, be provided with to dish lower body 11 side-prominent protuberance 25e and 25f.In addition, at the arranged outside of sidewall 25i and the operating portion 25j that switching mechanism cooperates that covers of disk drive device.In order to cooperate with the switching mechanism that covers with gear, also can replace operating portion 25j, gear is arranged on the outside of sidewall 25i.

Protecting component 24 is configured on the otch 12g part of sidewall 12i of box upper body 12.Below describe the structure and the action of protecting component in detail.

Each component parts is kept the upper and lower relation shown in Figure 104 and is assembled.Its result, the 1st valve 21 and the 2nd valve 22 are configured on the box lower body 11, according to the mode that rotatable parts 25 are set on this, engage box lower body 11 and box upper body 12.

Figure 105 represents to remove the vertical view of the disk cartridge 320 of box upper body 12, and Figure 106 represents the section in the F-F line of Figure 105.Be in blocked state at the 1st valve 21 and the 2nd valve 22.

Shown in Figure 105, the dish maintaining part 22a holding tray 100 of the 2nd valve 22 on the position of the otch 25d of rotatable parts 25.In addition, on the position of the otch 25g of rotatable parts 25 and 25h, the dish maintaining part 22b of the dish maintaining part 21b of the 1st valve 21 and the 2nd valve 22 is holding tray 100 respectively.

The operating portion 25j of rotatable parts 25 is positioned at the opening 11r that is arranged at dish lower body 11.In addition, be located at the projection 35 and 36 of the 1st valve 21 and the 2nd valve 22, outstanding in the center pit 100h of dish 100.The center of rotation of rotatable parts 25 is consistent with the center essence of dish 100, according to being configured in the accommodation section in disc as the rotating mode of rotation axis.

In addition, the rotation axis 37 and 38 of the 1st valve 21 and the 2nd valve 22 be positioned at rotatable parts 25 dish receiving portion 25a below.Shown in Figure 106, owing to almost do not have the space between the top 12d of the top and box upper body 12 of the sidewall 25i of rotatable parts 25, therefore restriction is moved to the above-below direction of rotatable parts 25.Thus, when the 1st valve 21 and the 2nd valve 22 rotated, rotatable parts 25 can prevent effectively that rotation axis 37 and 38 from floating from the rotation hole 39 that is arranged at box lower body 11 and come off.

Shown in Figure 106,, coil therefore that 100 sidewall 25i with the top 25k of dish receiving portion 25 are attached closely to be touched because 25k tilts on the dish receiving portion 25a of rotatable parts 25.According to this structure, in order to ensure the intensity of rotatable parts 25, become big even will coil the width of the ring of receiving portion 25a, above 25k only closely touch with the signal recording surface periphery of dish 100 is attached, can prevent the 25a of the portion contact of accepting the whole truth of signal record zone.In addition, the position on the part that the dish 100 with dish receiving portion 25 contacts is with the protuberance 21w of the 1st valve 21 and the 2nd valve 22 and the top position consistency of 22w.

Then, the dish to the 1st valve 21 and the 2nd valve 22 keeps action and on-off action to describe.Figure 107 is when being illustrated in the 1st valve 21 and the 2nd valve 22 and being in blocked state, the vertical view of the configuration of the 1st valve the 21, the 2nd valve 22 and rotatable parts 25.Figure 108 represents the section in the G-G line of Figure 107.In addition, Figure 109 is when being illustrated in the 1st valve 21 and the 2nd valve 22 and being in development status, the vertical view of the configuration of the 1st valve the 21, the 2nd valve 22 and rotatable parts 25.Figure 110 represents the section of the H-H line of Figure 107.In Figure 107 and Figure 109, dish 100 is represented by double dot dash line.

When the 1st valve 21 and the 2nd valve 22 were in blocked state, shown in Figure 107, dish maintaining part 21b, 22a and 22b were outstanding to the center of dish 100 from otch 25g, 25h and the 25d of the sidewall 25i that is arranged at rotatable parts 25 respectively, holding tray 100.Shown in Figure 108, on dish maintaining part 22a and 22b, inverted cone shape inclined-plane 22a ' and 22b ' are set, because the inclined-plane contacts with the rib of the 1st 100B of dish 100, therefore coil maintaining part 22a and 22b, to coil 100 when push at dish 100 center, also will coil 100 and push to the direction of the 1st valve 21 and the 2nd valve 22.Not shown dish maintaining part 21b also is in equal state.Thus, contact with dish receiving portion 25a near the periphery of the signal recording surface of dish 100.In addition, as having illustrated in the 12nd embodiment, the attached (not shown) of closely touching of center pit of the protuberance 21w of the 1st valve 21 and the 2nd valve 22 and the signal recording surface 100B of 22w and dish 100.By the dish receiving portion 25a of rotatable parts and the protuberance 21w and the 22w of the 1st valve 21 and the 2nd valve 22; the signal record zone of the signal recording surface 100A of dish 100 is blocked from the outside; can prevent dust or dust attached to the signal record zone, can prevent also that in addition scar is attached to the signal record zone.

In addition, the size that is arranged at the hole 20h of the 1st valve 21 and the 2nd valve 22 substantially equates with the center pit 100h of dish 100.Therefore, even in the 1st valve 21 and the 2nd valve 22 obturations, place disk cartridge 320 with state dorsad, the part among the signal recording surface 100A of dish 100 is not exposed from the 1st valve 21 and the 2nd valve 22 yet.Therefore, can prevent that dust or dust accretions are in the signal record zone.

When the 1st valve 21 and the 2nd valve 22 are opened, the switching mechanism that covers of disk drive device is cooperated with operating portion 25j, operating portion 25j is moved with the direction shown in the arrow 25A.By this operation, rotatable parts 25 begin to rotate in accommodation section in disc, and projection 25e and 25f 100 the center of also will coil begins rotation as rotation axis simultaneously.Because projection 25e and 25f cooperate with guiding groove 27e and 28f, therefore along with the rotation of projection 25e and 25f, projection 25e and 25f push the sidewall of guiding groove 27e and 28f on one side, Yi Bian enter in guiding groove 27e and the 28f with the direction of arrow 27E and 28F respectively.Push the sidewall of guiding groove 27e and 28f by projection 25e and 25f, the 1st valve 21 and the 2nd valve 22 are the center with rotation axis 37 and 38, respectively towards the direction setting in motion of arrow 21A and 22A.

In addition, dish maintaining part 21b is the center with rotation axis 37 also, begins to move to the direction of arrow 21A. Dish maintaining part 22a and 22b move to the direction of arrow 22A.Thereby dish maintaining part 21b, 22a and 22b separate from coiling 100, separate sale at reduced prices 100.

Along with the opening operation of the 1st valve 21 and the 2nd valve 22, the projection 35 and 36 that is arranged at the 1st valve 21 and the 2nd valve 22 also moves to arrow 21A and 22B direction.This moment since dish 100 do not move, so projection 35 and 36 with contact by the non-signal record shown in the 100e of signal recording surface 100A is regional.Because therefore projection 35 and 36 more outstanding than protuberance 21w and 22w contacts with projection 35 and 36 by signal recording surface 100A, protuberance 21w and 22w become the non-contacting state with signal recording surface 100A.Thus, can prevent protuberance 21w and 22w and signal recording surface 100A, contact with the signal record zone especially.

Shown in Figure 109, rotate if be rotated further parts 25, then protuberance 25e and 25f arrive the end of guiding groove 27e and 28f.At this moment, open fully magnetic head peristome 11h of the 1st valve 21 and the 2nd valve 22 and chucking peristome 11c, the 1st valve 21 and the 2nd valve 22 become open state.

At this moment, be arranged at the otch 25c of the dish receiving portion 25a of rotatable parts 25,11h is overlapping with the magnetic head peristome, and dish receiving portion 25a is not outstanding on magnetic head peristome 11h.Therefore, under the 1st valve 21 and the 2nd valve 22 wide-open states, the magnetic head of disk drive device can not hinder the visit to the dish 100 of magnetic head very near dish 100.

In addition, shown in Figure 109 and Figure 110, even the 1st valve 21 and the 2nd valve 22 are in open state, the projection 35 of the 1st valve 21 and the 2nd valve 22 and 36 contacts with dish 100 in the non-signal record zone 100e of signal recording surface 100A.Therefore, projection 35 and 36 contacts with signal recording surface, can prevent to adhere to scar.

When inaccessible the 1st valve 21 and the 2nd valve 22, carry out the action opposite with above-mentioned action.Enter the obturation action of the 1st valve 21 and the 2nd valve 22, dish maintaining part 21b, 22a and 22b and dish 100 are approaching, and the action of holding tray 100 has been described in detail in the 13rd embodiment the 8th, therefore omits explanation.

The structure and the action of protecting component 24 then, are described.Shown in Figure 111, protecting component 24 has side wall portion 24d and is arranged at the pair of rotary axes 24b of side wall portion 24d.On the front end of side wall portion 24d, the 1st docking section 24a is set.Because the 1st docking section 24a need be docked at dish 100 lateral surface, therefore the 1st docking section 24a is made of the curved surface that has with the lateral surface same curvature radius of dish 100.In addition, the back side of side wall portion 24d is the 2nd docking section 24f.Wrist 24c is set near each rotation axis 24b, has the 3rd docking section 24e at its front end.

Shown in Figure 112, protecting component 24 is held according to mode between the sidewall 25i of rotation axis 24b 12d and rotatable parts 25 on box upper body 12, shown in arrow 24A, rotation axis 24b can be shaken as axle.The straight line at center that connects pair of rotary axes 24b is parallel to coiling 100 wiring, and is in the top more than the 1st 100B of dish.

Figure 113 and Figure 114 represent that the 1st valve 21 and the 2nd valve 22 are in the end of the protecting component 24 in the blocked state and the section of central portion.As shown in these figures, the protuberance 25m that is arranged at rotatable parts 25 docks with the 2nd docking section 24f of protecting component 24, and side wall portion 24d is pushed so that the 1st docking section 24a docks with the lateral surface of dish 100 to the center position of dish 100.Therefore, prevent that dust and dust from turning back to the signal recording surface 100A of dish 100 from the otch 25c (Figure 104) of dish receiving portion 25a.Thus, dish receiving portion 25a box protecting component 24 and the periphery Continuous Contact of coiling 100 prevent that fully dust and dust from turning back to the signal recording surface 100A of dish 100.

For open the 1st valve 21 and the 2nd valve 22, when rotatable parts 25 were rotated, because the protuberance 25m of rotatable parts 25 separates from protecting component 24, so protecting component 24 did not apply power to dish 100 sides.

Continue the 1st valve 21 and 22 openings of the 2nd valve, when further rotatable parts 25 rotated, the lateral surface of the sidewall 25i of rotatable parts 25 contacted with the 3rd docking section 24e of protecting component 24, and side wall portion 24d is applied power to the lateral direction of dish 100.Figure 115 and Figure 116 represent to illustrate the end of protecting component 24 of this state and the section of central portion.Shown in Figure 115, the lateral surface of dish 100 is from the 1st docking section 24a separation of protecting component 24.Thus, dish 100 becomes rotatable state in accommodation section in disc.

As mentioned above, protecting component 24 by shaking with rotatable parts 25 interlocks, can access and coil 100 states that dock and sow discord every state from coiling 100 lateral surface according to dish 100 rotating modes.

As mentioned above,, the sign face 100B of dish is exposed from disk cartridge, become the part of the design of optimizing disk cartridge integral body according to present embodiment, simultaneously can be with the disk cartridge attenuation.

In addition, rotate, can open and close the 1st valve 21 and the 2nd valve 22 by making rotatable parts 25, when valve is inaccessible, can be by coiling maintaining part 21b, 22a and 22b holding tray 100 definitely.

Further; also has protecting component 24 with rotatable parts 25 interlocks by the dish maintaining part 25a that is arranged at rotatable parts 25, the protuberance 21 that is arranged at the 1st valve 21 and the 2nd valve 22 and 22w; in dish 100 maintained states; even coiling 100 sign face 100B exposes; also can prevent definitely on dust or dust the signal recording surface 100A, or on signal recording surface 100A, adhere to scar attached to dish 100.

Also have, in the present embodiment, though with the side of the side adjacency that the magnetic head peristome is set in setting operation be used to the such opening 11r of operating portion 25j that rotatable parts 25 are rotated, in other sides of disk cartridge, also can be provided with according to the mode of operating operation portion.Perhaps, also a plurality of operating portions can be set.For example, also can be with the operating portion 25j of present embodiment as the 1st operating portion, on the sidewall 25i of rotatable parts 25, be provided as the 2nd operating portion projection etc. in case the 2nd operating position in magnetic head peristome 11h.Perhaps, shown in Figure 105, near the dish maintaining part 22a of the 2nd valve 22, be provided as the projection of the 2nd operating portion etc., but also direct control the 2nd valve 22.In this case, along with moving of the 2nd valve, rotatable parts 25 rotate, thus with rotatable parts 25 linkedly the 1st valve 21 move.

In addition, in the present embodiment, use protecting component 24, prevent that dust etc. from invading the signal recording surface 100A of dish 100 from being formed at notch portion 25c on the dish receiving portion 25a.But,,, can prevent that also dust from invading from notch portion 25c by adopting other structures without protecting component 24.

For example, as schematically showing among Figure 117, continuous side walls 12i in the part of the otch 12g of the sidewall 12i that is arranged at disk cartridge upper body 12 stops up otch 12g.And, about coiling dish maintaining part 22b and the 2nd valve 22 (not shown)s are being set on 100 the centrosymmetric position with otch 12g.Dish maintaining part 22b adopts movably towards disk center as the dish maintaining part of the 13rd embodiment, and is applied in the device of power towards disk center.Also, in the part of the dish contact of coiling maintaining part, resilient material is set, will coils the device that 100 center positions to 100 dishes 100 apply power by elasticity as the dish maintaining part of the 19th embodiment.

Shown in Figure 118, if adopt this dish maintaining part 22b, keep 22b and coil 100 and contact, keep by dish so, can be on the zone of the otch 25c of the sidewall 12i that the box upper body is set by the lateral surface of platen 100.Because the size of accommodation section in disc and dish 100 is replaceable hardly, so the radius-of-curvature of sidewall 12i is also almost consistent with the radius-of-curvature of the lateral surface of dish 100.Its result, the lateral surface of dish 100 and the sidewall 12i driving fit of box upper body 12,25a is collaborative with the dish receiving portion, can prevent the signal recording surface intrusion of dust to dish 100.

According to this structure, do not need to be provided with protecting component 24 owing to become, therefore the structure of disk cartridge is become simple.

(the 21st embodiment)

Below, the 21st embodiment of disk cartridge of the present invention is described.

Figure 119 is the stereographic map that has decomposed the state of disk cartridge 321.Disk cartridge 321 be provided with on the shape difference of slip-off preventing parts 55 and the box lower body 11 take out on the resume hole 11n this some different with the disk cartridge 320 shown in Figure 104 (the 20th embodiment).Therefore, below describe slip-off preventing parts 55 and taking-up resume hole 11n in detail.

Shown in Figure 119, slip-off preventing parts 55 are provided with near the side relative with the side of the magnetic head peristome 11h that the box main body that is made of box upper body 12 and box lower body 11 is set.Near one end of the long axis direction of slip-off preventing parts 55 rotation axis 55a is set, the other end setting of long axis direction has the holding section 55d of projection 55e.

On box upper body 12, the rotation hole 12m of the rotation axis 55a that accepts slip-off preventing parts 55, the opening 12p that inserts holding section 55d and the hole 12n that accepts the projection 55e of holding section 55d are set.In addition, when slip-off preventing parts 55 were installed on the box upper body 12, the mode according to becoming above the slip-off preventing parts 55 with 12d equal height above the 12n of box upper body was provided with recess 12k on the zone that comprises rotation hole 12m and opening 12p.Slip-off preventing parts 55 stretch out to opening 12w, and when being in state outstanding above dish 100, the projection 55e of holding section 55d is inserted into hole 12n, and slip-off preventing parts 55 are fixed.

On box lower body 11, be provided with and take out resume hole 11n.Figure 120 is that expression enlarges the figure that takes out near the structure of resume hole 11n.On taking-up resume hole 11n, be provided with and cover material 56, according to covering the mode that material 56 covers the part of the opening that takes out resume hole 11n, the side of connecting portion 56a connection cover material 56 and taking-up resume hole 11n.Lid material 56 forms column (pin shape), at its front end projection 56b is set.

Take out the center of resume hole 11n, consistent with the center of the rotation axis 55a of the center of the rotation hole 12m of box upper body 12 and slip-off preventing parts 55.Such as described below, lid material 56 cooperates with slip-off preventing parts 55, if slip-off preventing parts 55 are rotated along the circumference of rotation axis 55a, applies the power of material 56 along the circumference rotation of axle 56c of covering that makes so.Its result, connecting portion 56 is by disrumpent feelings, and cap 56 breaks away from from box lower body 11, and the opening that takes out resume hole 11n exposes fully.

When making disk cartridge 321, dish 100 is incorporated in the accommodation section in disc by the sidewall 12i regulation of box upper body 12.After this, if will coil 100 from disk cartridge 321 taking-ups, slip-off preventing parts 55 are rotated, then cover material 56 and break away from, the opening that takes out resume hole 11n exposes.After in case lid material 56 breaks away from, operation slip-off preventing parts 55, even will coil 100 with different types of dish exchange, the opening of taking-up resume hole 11n still exposes.That is to say, stop up by lid material 56, just represent that the dish 100 in the disk cartridge 321 is the dishes that are contained when disk cartridge 321 is made as long as take out resume hole 11n.In addition, under the situation that taking-up resume hole 11n opens, expression has the different possibility of dish that is contained when disk cartridge 321 interior dishes 100 are made with disk cartridge 321.

The disk drive device that disk cartridge 321 is installed detects the open and-shut mode of these taking-up resume hole 11n, adopts testing result in the control of record, reproduction action.For example, consider to make the situation of the disk cartridge 321 of taking in the dish that can write down, reappear by prescribed form.Disk drive device, the state in the taking-up resume hole of the disk cartridge 321 that detection is inserted into.Close if take out resume hole 11n, judge that so disk drive device takes in the dish that can be write down, be reappeared by prescribed form.And, the action of writing down or reappearing at once by this form.On the other hand, open if take out resume hole 11n, disk drive device is judged kind the unknown of the dish that is contained in disk cartridge so.And disk drive device in order to determine that the dish in the disk cartridge is the sort of dish, shines various test signals on the dish, at first confirms the action of the kind of coiling.Then, according to confirming the result, with top condition to the dish tracer signal, perhaps to the dish reproducing signal.

Below, be described in detail the operation of the structure of slip-off preventing parts 55 and taking-up dish 100 and other dish exchange.

Figure 121 represents slip-off preventing parts 55, and is outstanding above dish 100, prevents to coil 100 states that come off from the opening 12w of box upper body 12.In this state, disk cartridge 321 limits are by keeping, and the limit is inserted into disk drive device.Figure 122 represents near the structure of rotation axis 55a in the J-J line section shown in Figure 121, and Figure 123 represents near the structure of holding section 55d in the J-J line section shown in Figure 121.In addition, Figure 124 represents the structure of the K-K line section shown in Figure 121.

Shown in Figure 121, slip-off preventing parts 55, be set at from box upper body 12 on the relative position of the slip-off preventing parts 12s that stretches out of dish peristome 12.Slip-off preventing parts 55 extend along the long axis direction of slip-off preventing parts 55, have depression and are arciform side 55f.

Shown in Figure 122, on box upper body 12, form boss cylindraceous (boss) 12q, the inner space regulation rotation hole 12m of boss 12q.The rotation axis 55a of slip-off preventing parts 55 is inserted into rotation hole 12m.Projection 55c is set so that rotation axis 55a does not come off from rotation hole 12m on the front end of rotation axis 55a.In addition, on the inboard of rotation axis 55a, be provided with the opening of the opening same degree of taking out resume hole 11n inner space as the cross section, take in therein and cover material 56.The projection 56b of lid material 56 is chimeric with the recess 56b that is arranged at slip-off preventing parts 55.The center of the rotation axis 55a of slip-off preventing parts 55 is consistent with the rotation axis 56c of lid material 56.In addition, cover material 56 and to take out the side of resume hole 11n continuous by connecting portion 56a as mentioned above.Connecting portion 56a compares attenuation with box lower body 11.

Shown in Figure 123, the holding section 55d that is arranged at the end of slip-off preventing parts 55 is inserted into the opening 12p of box upper body 12, is connected with the back side of box upper body 12.Projection 55e is set on the front end of holding section 55d, cooperates with the hole 12n of box upper body 12.When projection 55e was pushed with the direction of arrow 55A, the part of holding section 55d was carried out elastic deformation, the less thick of regional 55f.In addition, setting is worked in coordination on the side of the holding section 55d of slip-off preventing parts 55 and the opening 12p of box upper body 12 section difference 55g and 12o prevent when slip-off preventing parts 55 are rotated, near 12 disengagings from the box upper body holding section 55.

To coil under 100 situations of taking out from disk cartridge 321, shown in Figure 123 and 124, to push to the direction of arrow 55A with the projection 55e that the hole 12n of box upper body 12 cooperates on one side, Yi Bian slip-off preventing parts 55 are rotated to the direction of the arrow 55B shown in Figure 121.So shown in Figure 124, elastic deformation takes place the regional 55f of holding section 55d, the front end of projection 55e contacts with the inclined-plane 12v at the back side that is arranged at box upper body 12 on one side, on one side mobile holding section 55d.Owing to inclined-plane 12v is set at the back side of box upper body 12, even so holding section 55d do not supply with the big power that applies by inclined-plane 12v, also be movable to the position shown in the dotted line of Figure 124.According to the mode of the elastic deformation of the regional 55f that results from holding section 55d post-equalization, in this position, the front end of projection 55e becomes the identical height of front end with the projection 55e when cooperating with hole 12n.

At this moment, shown in Figure 122, slip-off preventing parts 55 make rotation axis 55a center 55C around rotate to the direction of arrow 55B.Along with this action, be the center with rotation axis 56C, apply as making and cover the power that material 56 rotates to the direction of arrow 55B, connecting portion 56a is disrumpent feelings, and lid material 56 breaks away from.

Figure 125 represents the mobile end of slip-off preventing parts 55, the state that slip-off preventing parts 55 move to position that can taking-up dish 100.At this moment, shown in Figure 124,, therefore the slip-off preventing parts 55 more than this are moved to the direction of arrow 55B because holding section 55d has moved to the position with the contacts side surfaces of box upper body 12.

Shown in Figure 125, though the part of slip-off preventing parts 55 is outstanding in dish peristome 12w, move to slip-off preventing parts 12s side by making dish 100, slip-off preventing parts 55 are not given prominence to above dish 100.Therefore, for example finger enters dish 100 center pit 100h, and dish 100 is come off from the box upper body, can be from disk cartridge 321 taking-up dishes 100.

Figure 126 and 127 is illustrated respectively near near the structure that rotation axis 55a is and holding section 55d is of the line section shown in Figure 125.As mentioned above, in making slip-off preventing parts 55 rotating process, lid material 56 breaks away from.Thus, shown in Figure 126, if the mobile end of slip-off preventing parts 55 takes out resume hole 11n so and is in full open position.In addition, shown in Figure 127, because the projection 55e of holding section 55d cooperates with the recess 12r that is arranged at box upper body 12, so the recovery of the elastic deformation of the regional 55f of holding section 55d.

Taking-up dish 100, be accommodated in other dish 100 in the disk cartridge 321 after, slip-off preventing parts 55 are moved to the direction opposite with arrow 55B.If slip-off preventing parts 55 turn back to the position shown in Figure 121, the projection 55e of holding section 55d cooperates with the hole 12n of box upper body 12 so, and slip-off preventing parts 55 relative box upper bodies 12 are fixed.

Under the situation of swapdisk 100 once more, also can operate slip-off preventing parts 55 according to the mode identical with aforesaid operations.But,,, do not cover the action that material 56 breaks away from therefore along with the rotation of slip-off preventing parts 55 because lid material 56 has broken away from.

According to present embodiment, the side 55f of slip-off preventing parts 55 depression is for arciform.Thus, even it is very big that slip-off preventing parts 55 are rotated, also can obtain the state that slip-off preventing parts 55 are not given prominence to above dish 100, because the rotational angle of slip-off preventing parts 55 is little, therefore the holding section 55d of slip-off preventing parts 55 contacts with box upper body 12, can keep mated condition.Coiled 100 o'clock in taking-up thus, also can keep the two ends and box upper body 12 state of contact that make slip-off preventing parts 55, can keep the physical strength of slip-off preventing parts 55.Thereby, coil at 100 o'clock in taking-up, even disk cartridge 321 mistakes are fallen, perhaps the operator also can prevent 55 breakages of slip-off preventing parts with powerful operation slip-off preventing parts 55.

In addition, rotate, take out the resume hole simultaneously and become open state by making slip-off preventing parts 55.Thus, do not need as in the past operator to bend the claw in resume hole.

Though lid material 56 is configured as column in the present embodiment, but it is if continuous according to the mode and the box lower body 11 that cover at least a portion of taking out resume hole 11n, with the rotation interlock of slip-off preventing parts 55 and the part that breaks away from, cover material 56 so and also can have other shape.For example, also by the claw that is arranged at the peristome that takes out resume hole 11n, and be arranged at lid material between slip-off preventing parts 55 and the claw, that constitute along with the such accessory of the crowded claw of the rotation of slip-off preventing parts 55.

In addition, in the present embodiment, though, slip-off preventing parts 55 are moved to other direction according to being undertaken by the mode that slip-off preventing parts 55 and dish 100 is rotated abreast, obtain the state that prevents to coil 100 state that comes off and taking-up dish 100.

Figure 128 and the parallel mobile slip-off preventing parts 57 of 129 expressions.It is arciform that slip-off preventing parts 57 also make along the side 57f depression of its long axis direction.Figure 128 represents the state of holding tray 100, makes the part of slip-off preventing parts 57 outstanding above dish 100.Under the situation of taking-up dish 100, slip-off preventing parts 57 are moved towards the direction of the arrow 57A vertical with the long axis direction shown in Figure 129.On the side 57a of slip-off preventing parts 57, protuberance that setting cooperates with box upper body 12 or recess etc., preferred slip-off preventing parts 57 are difficult to come off from box upper body 12.

Because the side 57f of slip-off preventing parts 57 also caves in to arciform, moves by only making slip-off preventing parts 57, can access the state that anti-shedding part spare 57 is not given prominence to above dish 100.Thus, under major part that still makes slip-off preventing parts 57 and box upper body 12 state of contact, promptly can taking-up dish 100, can prevent from when the dish exchange, the physical strength of slip-off preventing parts 57 to be died down.

Slip-off preventing parts 58 shown in Figure 130 and 131 rotate the rotation axis 58a that is arranged at the two ends of its length direction as the center.In this case, slip-off preventing parts 58 are obtained the configuration shown in the Figure 130 that contacts with box upper body 12, preferably by spring etc. slip-off preventing parts 58 are applied power.Slip-off preventing parts 58 can rotate in the position shown in Figure 131.But the side 58f along its long axis direction also caves in to arciform owing to slip-off preventing parts 58, therefore in order to take out dish 100, also can slip-off preventing parts 58 only can be rotated a bit from the state shown in Figure 130.

Under situation about slip-off preventing parts 57 and slip-off preventing parts 58 being arranged on the disk cartridge, also can adopt and the sliding action of slip-off preventing parts 57 and the rotational action interlock of slip-off preventing parts 58, make and cover the mechanism that material comes off.Perhaps, also can be provided with cover to take out the district the lid material not with slip-off preventing parts 57 and slip-off preventing parts 58 interlocks, make by the operator and cover the material disengaging, can carry out the such mechanism of rotational action of the sliding action and the slip-off preventing parts 58 of slip-off preventing parts 57.

(the 22nd embodiment)

Below, the 22nd embodiment of disk cartridge of the present invention is described.

Figure 132 represents the vertical view of disk cartridge 322, and Figure 133 represents the L-L line sectional view shown in Figure 132.Disk cartridge 322, identical with the disk cartridge of reference Figure 117 and Figure 118 explanation, do not use protecting component and the dust that prevents to invade from the otch 25c that is arranged at dish receiving portion 25a.Though at length represent in Figure 132, disk cartridge 322 has the 1st valve the 21, the 2nd valve 22, rotatable parts 25 and the slip-off preventing parts 55 that illustrated in the 20th and the 21st embodiment.These parts have the structure that has illustrated in the 20th and the 21st embodiment.

In the disk cartridge of the 20th and the 21st embodiment shown in Figure 104 and Figure 119, on the sidewall 12i of box upper body 12, be provided with otch 12g.The position of this otch 12g, when the 1st valve 21 and the 2nd valve 22 are in blocked state, with the otch 25c that is arranged at dish receiving portion 25a be positioned at regional corresponding.

In the disk cartridge 322 of present embodiment, the sidewall 12i with the partial continuous of otch 12g is set also.In addition, shown in Figure 134, on the zone corresponding, sidewall 12i ' is being set in 100 parts that contact with dish with otch 12g.

Sidewall 12i is because therefore regulation dish peristome 12w has than coiling 100 big radius-of-curvature.Corresponding therewith, shown in Figure 135, sidewall 12i ' has and coils 1 00 identical radius-of-curvature.Shown in Figure 132, the center of the formed cylinder of sidewall 12i is consistent with the some C1 as the center of accommodation section in disc.Corresponding therewith, the center of the curved surface of sidewall 12i ' is consistent with some C2.Point C2 is from a C1 skew.Also have, the sidewall 25i of rotatable parts 25 has as the some C1 at the center of the accommodation section in disc cylindrical shape as the center, will put C1 and rotate as the center.

In addition, on the center and some C2 consistent location of dish 100, dish maintaining part 22b holding tray 100.In Figure 132, though only represented dish maintaining part 22b, not shown dish maintaining part 21b, 22a is also collaborative, according to the center and the consistent mode holding tray 100 of some C2 of dish 100.For in this position, do not coil receiving portion 25a receiving plate 100 in order not contact and to make with the information recording surface (back side) of dish 100, the position of dish receiving portion 25a is also from a C1 skew.Distance between some C1 and the some C2 depends on the radius of the formed cylinder of sidewall 12i and the radius of dish 100.When the diameter of dish 100 was 5 inches, the distance between preferred point C1 and the some C2 was in the scope of about 0.5mm～1.5mm.Distance than the little situation of this scope under, disk cartridge 322 is inserted in the disk drive devices, when dish 100 is rotated, by the deflecting facet of dish 100 etc., the possibility that existence dish 100 contacts with sidewall 12i.In addition, the distance between a some C1 and the C2 is than under the big situation of about 1.5mm, and the excesssive gap between the sidewall 12i of dish 100 and accommodation section in disc becomes many possibilities because existence is piled up in the dust or the dust in gap, and is therefore not preferred.

Figure 136 represents that the dish of the L-L line section of Figure 132 keeps not near the 22b.As the 20th embodiment has illustrated, owing on dish receiving portion 25a, on the 15K dip plane is set, coil therefore that 100 sidewall 25i (not shown)s with the top 15K of dish receiving portion 25 are attached closely to be touched.Under the situation of present embodiment, near sidewall 25i, the top 25K of dish receiving portion 25a is parallel with box lower body 11, the 1st valve 21 and the 2nd valve 22 are in inaccessible state, under the situation of dish maintaining part 21b, 22a, 22b (not shown) holding tray 100, in this part, dish 100 contacts with dish receiving portion 25a.Dish receiving portion 25a is stipulated by line 25n with the dish 100 regional 25b's that contact in interior week.

Shown in Figure 132, the regional 25b of dish receiving portion 25a except the part that otch 25c is set, is positioned near the periphery of dish 100.And interior all 25n of regional 25b are positioned on the circumference of a C2 as the center.On the other hand, the periphery of regional 25b is by the periphery regulation of dish 100.Thereby, regional 25b become from by will put C2 as the zone of the ring-type of two concentric circles clampings at center remove with the overlapping part of notch 25c after the zone.

The 1st valve 21 and the 2nd valve 22 (not shown) obturations, in dish maintaining part 21b, the 22a of the 1st valve 21 and the 2nd valve 22,22b (not shown) during holding tray 100, dish 100 be centered close to C2.In addition because dish 100 equates with radius-of-curvature between the sidewall 12i ', so coils 100 side, on the position that otch 12g is set with the complete driving fit of side 12i '.Promptly coil the off-centring of the center of the dish that maintaining part 21b, 22a, 22b kept, dock holding tray with sidewall 12i ' so that coil 100 lateral surface to accommodation section in disc.

On the other hand, when the 1st valve 21 and the 2nd valve 22 (not shown)s were in blocked state, dish receiving portion 25a and the interior week of coiling the regional 25b that is contacted were also to the off-centring of accommodation section in disc.Thus, the information recording surface (back side) of dish 100 contacts with the dish receiving portion near its periphery, in not coiling the otch 25c of receiving portion 25a, and the side and the sidewall 12i ' driving fit of dish 100.

On the other hand, near center pit 100h, as having illustrated in the 20th embodiment, dish 100 contacts with the protuberance 21w and the 22w that are arranged at the 1st valve 21 and the 2nd valve 22.Thereby the information recording area of dish 100 is disconnected fully from the outside, can prevent that dust is attached to the information recording area of dish 100.

In addition, shown in Figure 136 and Figure 137, in the disk cartridge 322, in the bottom of the dish maintaining part 22b that the 2nd valve 22 is set, tapered portion 26c is set, on the zone that the dish maintaining part 22b of box lower body 11 is positioned at, recess 11x is set.Thus, the thickness or the diameter fluctuation of dish 100, under a situation bigger than specification value, shown in Figure 137, elastic deformation takes place at the regional 26b of the recess 11x end that is arranged in box lower body 11 in the 2nd valve 22.Thus, the rake 22b ' of dish maintaining part 22b contacts with the rib of the periphery of dish 100 definitely, and the 1st valve 21 and the 2nd valve 22 can not rock and holding tray 100 definitely.In addition, according to elastic deformation, dish maintaining part 22b will coil 100 and apply power to its center position.Thus, shown in Figure 132 and 134, like that, will coil 100 and apply power, improve driving fit to the sidewall 12i ' that coils 100 side to sidewall 12i '.And, can prevent more properly that dust is attached to the information recording area of dish 100.

For irrelevant with dish 100 thickness and diameter fluctuation, holding tray 100 definitely, also can be when keeping thickness and diameter to become the dish 100 of median of specification limit, and shown in Figure 137, a mode that produces elastic deformations according to the 2nd valve 22 only designs; When keeping thickness and diameter to become the dish 100 of lower limit of specification value, shown in Figure 136, the mode that produces elastic deformation according to the 2nd valve 22 hardly designs.

As mentioned above,, can not adopt protecting component 24, prevent that dust is attached to the information recording area of dish 100 according to present embodiment.Therefore, do not need protecting component 24 or make protecting component and the structure of rotatable parts 25 interlocks, the structure of disk cartridge is become simple.

(the 23rd embodiment)

Below, the 23rd embodiment of disk cartridge of the present invention is described.

Disk cartridge of the present invention, different with disk cartridge in the past, the single face of dish is exposed, take in dish.Therefore, can make the less thick of disk cartridge, in addition, expose, can make the design of disk cartridge integral body outstanding by the pattern that makes the sign face that is recorded in dish.

But for the one side that makes dish is exposed, by operator's use-pattern, also there is the possibility of pushing down the sign face inadvertently in the sign face of the tangible dish of operator.Even in this case, disk cartridge also needs holding tray so that on the signal recording surface of dish non-cohesive scar, or coil indeformable.Thus, no matter holding tray in which way, all carrying out could non-cohesive scar, the inspection of guard signal record surface definitely on the signal recording surface of dish.

Figure 138 represents the space that should be provided with below the 100d of signal record zone, so that constructing under the situation of 59 holding trays 100 by the maintenance of dish receiving portion etc., even by operator presses dish 100, signal record zone 100d contacts but non-cohesive scar with keeping structure 59.Also have, in Figure 138,, amplify the size of a part and represent according to the mode of the feature of the maintenance structure 59 that can clearly stipulate the space better.Therefore, the ratio of vertical with the horizontal size among the figure is different with actual ratio.

Under the following situation that can obtain sufficient room of dish 100,, also can guarantee and the corresponding space of maximum deflection amount of coiling 100 no matter curve dish 100 in which way.But, if make this disk cartridge, its thickness thickening so.Making the space that should be arranged at below the dish as far as possible hour, at first, need holding tray 100 according to the as far as possible little mode of curvature that makes dish 100.Therefore, preferably from the near as far as possible part holding tray 100 of signal record zone 100d.Shown in Figure 138, keep structure 59, from coil 100 center till the Rin part and from coiling the outside, 100 center, the signal recording surface 100A of holding tray 100 to Rout.At this, with Rin as distance from the approaching point of the signal record zone 100d and the signal record zone 100d of the central side of dish 100 to the central side of dish 100.In addition, with Rout as distance from the approaching point of the signal record zone 100d and the signal record zone 100d in the outside of dish 100 to the center of dish 100.As mentioned above, stipulate that preferably the point of the point of Rin and regulation Rout and signal record zone 100d are approaching as far as possible.Preferably the diameter at dish 100 is under the situation of 5 inches (radius 60mm), and Rin is 20mm, and Rout is 59mm.

The space 69b that should be provided with according to the mode of not paying scar in the 100d of signal record zone is determined by following mode.At first, with the height (degree of depth) of space 69b as S.And, the circumference 69f of the circumference 69d of the radius R out on the specified signal record surface 100A, the radius (Rout-16.2S) from the plane of the only parallel isolation distance 0.3S of signal recording surface 100A.Will be by the circle of circumference 69d and circumference 69e regulation side 59a as the top and following frustum of a cone, will be by the circle of circumference 69e and circumference 69f regulation side 59b as the top and following frustum of a cone.

In addition, will be from the circle that coils 100 center radius Rin as the bottom surface, will be from the side of the cylinder of signal recording surface 100A height (degree of depth) S as 59d.From removed by the zone after the area inside of the cylinder of side 59d regulation by the zone of the frustum of a cone of side 59a and 59b regulation is the space 69b that should be arranged on the below of signal record zone 100d.

Because the value of S has been stipulated the height of space 69b,, on the 100d of signal record zone, also be difficult to adhere to scar even therefore make dish 100 bendings with the big degree of the value of S.But, if the value of S is big, disk cartridge thickening so.Thereby in order to make thin disk cartridge, the value of S is preferably little.According to experimental result, the bending of pressing the dish to a certain degree 100 that platen 100 produces with hand as can be known by the operator, as its countermeasure, even the value of S is 1mm, but also guard signal posting field 100d.

On the other hand, preferably the zone of the central side from Rin to dish 100, the fastening area 100e of dish 100 does not contact with keeping structure 250.In the disk drive of recording dish 100, fastening area 100e contacts with turntable or clamper.This is because if in this zone, has adhered to scar, dust, and so positively the chucking dish 100.Fastening area 100e is by the diameter 22mm consistent with the center of dish and the zoning of two concentric circles clampings of 33mm.Because fastening area is a zone of relative dish 100, therefore above fastening area 100e, even operator presses dish 100, dish 100 is bending hardly also.Thereby if form the space 69a that contacts with fastening area 100e, the height (degree of depth) of this space 69a can be any value so.

Figure 139 is expression, forms the above-mentioned space 69b of the value of S as 1mm, on the dish 100 that is disposed on the 69b of space, at the synoptic diagram of the appearance of the distortion that applies the dish 100 when 100 power is firmly coiled in space 69b side pressure.Experimental result, the operator is no more than 3kg with hand 100 the power of firmly coiling as can be known.In addition, even this moment, the bending of dish 100 is in the degree of fully taking in the 69b of space, and crooked dish 100 does not contact with side 59a and 59b yet.

Space 69b is given for the necessary minimal zone of not paying scar in the 100d of the signal record zone of dish 100.Therefore, also can below the 100d of the signal record zone of dish 100, form than the zone that comprises that space 69b is bigger.Shown in Figure 140 and Figure 141, also can exceed side 59a and 59b, form space 69b.But,, the reinforcement part 59 ' or 59 of adjacency is set on the part that keeps periphery preferably for the intensity of the part of the periphery of the dish 100 that strengthens the maintenance structure 59 that is kept for holding tray 100 ". Side 59a and 59b are judging whether to allow this reinforcement part 59 ' or 59 " for useful on the Any shape.

Specify the disk cartridge that designs based on above-mentioned research.Figure 142 represents the vertical view of disk cartridge 322, and Figure 143 is the A-A line sectional view among Figure 142.In addition, Figure 144 is the stereographic map of the state behind the expression decomposition disk cartridge 323.In disk cartridge 322, the inscape identical, pay identical reference marks with the disk cartridge of the from the 20th to the 22nd embodiment.

Disk cartridge 323, identical with the 22nd embodiment, do not have protecting component, make dish 100 contact holding tray with the sidewall 12i of box upper body 12.

Specifically, shown in Figure 142 and Figure 144, under the state of the 1st valve 21 and the 2nd valve 22 obturations, disk cartridge 323 is by dish maintaining part 22a, the 22b holding tray 100 of the dish maintaining part 21b and the 2nd valve 22 of the 1st valve 21.At this moment, the side of dish 100 in the present zone of otch 25c of rotatable parts 25, contacts with the sidewall 12i of box upper body 12.In addition, the center of dish 100 is consistent with some C2.According to the balanced mode that contact of the 1st 100A of dish 100, the dish receiving portion 25a of rotatable parts 25 and coil interior week in 100 zones that contact is with will to put C2 consistent as the circumference at center.On the other hand, the center of the sidewall 25i of rotatable parts 25 is consistent with some C1.

Shown in Figure 142 and Figure 144, in the 1st valve 21 and the 2nd valve 22 of disk and 323, form the protuberance 20w that constitutes by protuberance 21w and 22w around the hole 20h corresponding with the center pit of dish 100.Also have, protuberance 35d and 36d are being set the position of predetermined distance at interval from protuberance 20w.Protuberance 35d and 36d become valve continuous protuberance 20d when inaccessible, keep the approaching zone, signal record zone with dish 100.Be formed at the recess regulation space 69a between protuberance 20w and the protuberance 20d, when holding tray 100, the fastening area of dish 100 is positioned at space 69a.

In addition, shown in Figure 143, when holding tray 100, below dish 100, according to guaranteeing the space 69b mode shown in Figure 138, the dish receiving portion 25a of design protuberance 36d, the 2nd valve 22 and rotatable parts 25.Though not expression has designed protuberance 35d and the 1st valve 21 too in Figure 143.Become more than the 1mm according to the interval between the 1st valve 21 and the 2nd valve 22 and the dish 100 and to design like that.In addition, coil receiving portion 25a, be positioned at the outside of the space 69b shown in Figure 138.That is to say that be positioned at the below more than the side 59a of space 69b and 59b, dish receiving portion 25a is shed space 69b not.

As mentioned above, by below dish 100, guaranteeing the space 69b shown in Figure 138, even the operator pins the dish 100 that is accommodated in the disk cartridge 323, the also signal record zone of protective disc really.

In the disk cartridge 323 of present embodiment, in addition,, adopt the structure of the structure of the physical strength that improves component parts, the structure that two kinds of slip-off preventing parts can be installed and raising dust reduction capability in order to improve practicality.These structures below are described.

The structure of the physical strength that improves component parts at first, is described.Shown in Figure 142 and Figure 144, when the 1st valve 21 and the 2nd valve 22 obturations, dish maintaining part 21a, 22a, 22b, by by the elastic force that bending brought of the coupling part between the 1st valve 21 and the dish maintaining part 21b and by the elastic force that bending brought partly that continues between the 2nd valve 22 and dish maintaining part 22a, the 22b, dish maintaining part 21a, 22a, 22b work dish 100 power that apply to its center position.

But, disk cartridge 323 is fallen, or the operator apply power on dish 100 face 100B, make under dish 100 situations of in box, moving, in dish maintaining part 21a, 22a, 22b, also exist such power of moving laterally from 100 the center of coiling to work.And under the big situation of this power, there is damaged possibility in the coupling part between the 1st and the 2nd valve and dish maintaining part 21a, 22a, the 22b.Especially, the coupling part of dish maintaining part 21b and the 1st valve 21 and the coupling part of coiling between maintaining part 22b and the 2nd valve 22 are narrow, in Figure 142, relative with the power of representing respectively by arrow 21B and 22B a little less than.

Therefore, in disk cartridge 323, the section 65a of the sidewall 12i of regulation otch 25g of rotatable parts 25 and 25h and 65b intersect with the radial direction ( arrow 21B and 22B) of dish 100, and form according to the mode of facing with accommodation section in disc 10d.And when valve was inaccessible, according to dish maintaining part 21b, the 22b mode more than the not mobile ormal weight of direction difference of arrow 21B and 22B, by section 65a and 65b, confinement plate maintaining part 21b, 22b moved.

By section 65a and 65b are set, even disk cartridge 323 falls, or the intentional movable disk maintaining part of operator 21b, 22b, also can prevent to coil maintaining part 21b, 22b breakage.In addition, when valve is inaccessible,, moves such dish maintaining part 21b, 22b along with the motion of the 1st valve 21 and the 2nd valve 22 and contact with section 65a and 65b even the 1st valve 21 and the 2nd valve 22 open such power are worked with some reason.Thus, hinder the opening operation of the 1st valve 21 and the 2nd valve 22.Thereby, when valve is inaccessible, the 1st valve 21 and the 2nd rocking of valve 22 are diminished.

In addition, shown in Figure 142, if the operator moves like that according to the 1st valve 21 and the 2nd valve 22 are opened, so because the 1st valve 21 and the 2nd valve 22 are that rotate at the center with rotation hole 37 and 38 respectively, so the sidewall of the guiding groove 28f of the sidewall of the guiding groove 27e of the 1st valve 21 and the 2nd valve 22, making the protuberance 25e of rotatable parts 25 and protuberance 25f is respectively the direction rotation of middle mind-set arrow 25E and 25F with rotation hole 37 and 38.

At this moment, guiding groove 27e and guiding groove 28f extend to arrow 25E and 25F, if protuberance 25e and protuberance 25f can be respectively be in guiding groove 27e and the guiding groove 28f to the space that the direction of arrow 25E and 25F moves, so just become the reason that the 1st valve 21 and the 2nd valve 22 rock.

Therefore, when valve is inaccessible, protuberance 25e and protuberance 25f are positioned at the end of guiding groove 27e and guiding groove 28f, along with arrow 25E and 25F (direction that promptly links protuberance 25e and protuberance 25f and rotation axis 37 and 38 respectively) vertical substantially arrow 27E and the direction extension of 28F.

In addition, shown in Figure 144, protuberance 33b is set on box lower body 11, protuberance 25w is set on rotatable parts 25.Any of protuberance 33b and protuberance 25w has and the 1st valve 21 and the almost equal height of the 2nd valve 22.Protuberance 33b contacts with the back side of the dish receiving portion 25a of rotatable parts 25, and protuberance 25w contacts with recess 33c on the lower inside 11u that is arranged at box lower body 11.Protuberance 33b and 25w, with the 1st valve 21 and the 2nd valve 22 discontiguous zones of rotatable parts on, prevent rotatable parts 25 bendings, keep rotatable parts 25.Thus, rotatable parts 25 not with zone that the 1st valve 21 and the 2nd valve 22 contact on, prevent rotatable parts 25 crooked and not with dish 100 driving fits.

Dish maintaining part 22a as described in the 14th embodiment, comprises the 1st regional 122a and the 2nd regional 222a, and the 1st regional 122a is higher than the 2nd regional 222a.In addition, the front end of the 1st regional 122a is inserted among the sunk area 12x of the inner crest face that is arranged at box upper body 12.Zone 12x, when valve opened and closed, the zone of passing through along the front end of the 1st regional 122a was provided with.

Shown in Figure 142 and Figure 144, when valve opens and closes, in the zone that dish maintaining part 22a passes through, magnetic head peristome 11h is set, magnetic head peristome 11h arrives the side of box lower body 11.Therefore, engage box lower body 11 and box upper body 12 and constitute under the situation of box main body, near magnetic head peristome 11h, need only in box upper body 12, to guarantee intensity as box main body.

According to disk cartridge 323, as described in the 14th embodiment, when inaccessible valve, the 1st regional 122a of dish maintaining part 22a can positively control dish 100.In addition because the 2nd regional 222a of dish maintaining part 22a is low, therefore can be not yet with the inner crest face attenuation of box upper body 12.Thus, in the zone that the dish maintaining part 22a of box upper body 12 passes through, also can with thickness must attenuation the zone diminish, near magnetic head peristome 11h, can prevent that the box main body integral intensity from reducing.

In addition, the disk cartridge 323 of present embodiment as described in the 13rd embodiment, under the state of valve obturation, adopts the structure that its rigidity is provided.

Shown in Figure 145 and 146, the 1st valve 21 and the 2nd valve 22 in discontinuous two zones that separated by hole 20h, have according in the overlapping mode of the thickness direction bonding part of butt joint mutually.The 1st valve 21 has bonding part 21g ' and bonding part 21f ', and the 2nd valve 22 has bonding part 21g ' and bonding part 21f '.The N-N line sectional view of expression Figure 145 above Figure 146, the O-O line sectional view of expression Figure 145 below Figure 146.Between the bonding part 22g ' of the bonding part 21g ' of the 1st valve 21 and the 2nd valve 22, dock in the zone, when valve is inaccessible, the bonding part 21g ' of the 1st valve 21 thickness direction of valve relatively is positioned at the below, and the bonding part 22g ' of the 2nd valve 22 is positioned at the top.In addition, docking in the zone between the bonding part 22f ' of the bonding part 21f ' of the 1st valve 21 and the 2nd valve 22, when valve was inaccessible, the thickness direction of the relative valve of bonding part 21f of the 1st valve 21 was positioned at the top, and the bonding part 22f of the 2nd valve 22 is positioned at the below.

In addition, the front end edge of the bonding part 21g ' of the 2nd valve 22 butt joint zone is provided with protuberance 38c, and when valve was inaccessible, the recess 37c that will cooperate with protuberance 38c was arranged on the 1st valve 21.

Also have, shown in Figure 147, in the dish maintaining part 22a of the 2nd valve 22 and part that the protuberance 27a of the 1st valve 21 dock, projection 37a is set on protuberance 27a, coiling the recess 38a that setting cooperates with projection 37a on the maintaining part 22a.Upper section at projection 37a is provided with recess 37b.In addition, at the upper section of recess 38a, the protuberance 38b that cooperates with recess 37b is set.Projection 37a and recess 37b constitute the 3rd bonding part 37e of the 1st valve 21, and recess 38a and protuberance 38b constitute the 3rd bonding part 38e of the 2nd valve 22.

As mentioned above, in disk cartridge 323, be two zones with the part of the 1st valve 21 and the butt joint of the 2nd valve 22, in each zone, dock according to the bonding part that makes the 1st valve 21 and the 2nd valve 22 overlapping mode on the thickness direction of valve.Also have, in two zones, overlapping upper and lower relation is reversed.By this structure, when the 1st valve 21 and the 2nd valve 22 obturations, can prevent that valve breaks away from.In addition, under the inaccessible state of the 1st valve 21 and the 2nd valve 22, can improve the rigidity of bonding part.

In addition, by on the bonding part 22g ' of the bonding part 21g ' of the 1st valve 21 and the 2nd valve 22, recess 37c and protuberance 38c being set respectively, under the 1st valve 21 and the 2nd valve 22 buttoned-up situations, by rocking of valve etc., can make bonding part 21g ' be not easy to separate with bonding part 22g '.In addition, thus, can improve the adaptation between the 1st valve 21 and the 2nd valve 22, also can improve the dustproof effect of junction surface periphery.

Also have,, when valve is inaccessible, improve the rigidity that engages between the 1st valve 21 and the 2nd valve 22 by the 3rd bonding part 37e of the 1st valve 21 and the 3rd bonding part 38e of the 2nd valve 22.In addition, because the protuberance 38b of the 2nd valve and continue the part 21g ' and the projection 37b of bonding part 22g ' clamping the 1st valve, therefore when valve is inaccessible, can further improve the rigidity that engages between the 1st valve 21 and the 2nd valve 22.

Then, explanation can be installed the structure of the slip-off preventing parts of two kinds.Shown in Figure 144, disk cartridge 323 has rotation hole 12m and 12m ' on box upper body 12, coils 100 from the mechanism that dish peristome 12w comes off as preventing, any of slip-off preventing parts 55 and slip-off preventing parts 55 ' also can be installed.Slip-off preventing parts 55 have slip-off preventing parts 55 identical construction with the disk cartridge 321 that has illustrated as the 21st embodiment.Rotation axis 55a is inserted the rotation hole 12m of box upper body 12, and by making cooperation, slip-off preventing parts 55 can rotate rotation axis 55a as the center.And as described in the 21st embodiment, a part that makes slip-off preventing parts 55 is drawn to dish peristome 12w, can prevent to coil 100 come off, or rotate taking-up dish 100 till making the position shown in the slip-off preventing parts 55 to Figure 125.

On the other hand, slip-off preventing parts 55 ' have rotation axis 55 ' a and projection 55 ' b.Under the situation that is installed in box upper body 12, the rotation axis 55 ' a of slip-off preventing parts 55 ' and projection 55 ' b are cooperated to rotation hole 12m and hole 12m ' respectively, insert.Because slip-off preventing parts 55 ' are fixed two positions with box upper body 12, therefore, slip-off preventing parts 55 ' are not movable, and the part of slip-off preventing parts 55 ' is stretched out to dish peristome 12w usually.Be about to slip-off preventing parts 55 ' and be installed under the situation on the box upper body 12, can not take out the dish 100 that is accommodated in disk cartridge 323.

As mentioned above, by can being arranged on the box upper body 12 as matching mechanism, can be as required any of slip-off preventing parts 55 and slip-off preventing parts 55 ' be installed on the box main body with any the rotation hole 12m that all cooperates and the hole 12m ' of slip-off preventing parts 55 and slip-off preventing parts 55 '.Therefore, by optionally adopting any of slip-off preventing parts 55 and slip-off preventing parts 55 ', can make desirable placing 100 earth magnetism tray salvers 323 and can not take out the disk cartridge 323 of the dish of temporarily being taken in 100.

Also have, in Figure 144,, also these devices can be arranged in the disk cartridge 323 though be not shown in taking-up resume hole 11n and the lid material 56 that has illustrated in the 21st embodiment.To take out resume hole 11n and lid material 56 is arranged in the disk cartridge 323, and install under the situation of slip-off preventing parts 55, and as described in the 21st embodiment, slip-off preventing parts 55 rotated, taking-up was coiled 100 o'clock, covered material 56 and came off.Thus, the opening that takes out resume hole 11n exposes fully.Install under the situation of slip-off preventing parts 55 ' replacing slip-off preventing parts 55, slip-off preventing parts 55 are rotated and taking-up dish 100.Therefore, lid material 56 becomes the opening that still covers taking-up resume hole 11n.

Then, with reference to Figure 144, Figure 145, Figure 148 and Figure 149, the structure that improves dustproof effect is described.Shown in Figure 144, protuberance 33a is set around the chucking peristome 11c of box lower body 11 and magnetic head peristome 11h.In Figure 145, protuberance 33a is illustrated by the broken lines.As shown in Figure 148 of the M-M line sectional view of Figure 145, on the back side of the 1st valve 21 and the 2nd valve 22, recess 37d and 38d are set according to the mode that cooperates with protuberance 33a.

The 1st valve 21 and the 2nd valve 22 move box lower body 11.Thus, attached to the dust on the back side of the 1st valve 21 and the 2nd valve 22 etc.,, in box, introduce easily along with moving of the 1st valve 21 and the 2nd valve 22.According to this structure, can prevent to enter into dust between box lower body 11 and the 1st valve 21 and the 2nd valve 22 from chucking peristome 11c and magnetic head peristome 11h.

In addition, shown in Figure 149, near the hole 20h of the 1st valve 21 and 22 formation of the 2nd valve, in the part of the 1st valve 21 and the 22 mutual butt joints of the 2nd valve, in the 2nd valve 22, protuberance 36a and 36b are set, recess 35a and the 35b that cooperates with protuberance 36a and 36b is set in the 1st valve 21.The protuberance 36a and the 36b of the 1st valve 21, from by when the 1st valve 21 and the 2nd valve 22 are closed mutually the composition surface that forms of butt joint give prominence to.Thus, can prevent dust, invade along the interface of the 1st valve 21 and the 2nd valve 22 from hole 20h.

Also have, in the present embodiment, because the space 69b shown in Figure 138 is arranged on the below of dish 100, so be illustrated in the example of the dish receiving portion that holding tray 100 is set in the rotatable parts.But, for will the space shown in Figure 138 be arranged on dish 100 below, also can adopt other structure.For example, shown in Figure 150, also the dish receiving portion 25a ' of the peripheral end of holding tray 100 can be arranged on the box upper body 12 '.Even this structure, the shape of mode selective pan receiving portion 25a ', the 1st valve 21 and the 2nd valve 22 by being formed at dish 100 below according to the space 69b shown in Figure 138, even by operator presses dish 100, also can realize signal recording surface and valve or the discontiguous disk cartridge of dish receiving portion.

(the 24th embodiment)

Below, the 24th embodiment of disk cartridge of the present invention is described.The disk cartridge of present embodiment, dish receiving portion 25a at rotatable parts 25, be provided with and be used to collect dust etc. and prevent that dust etc. is attached to the groove on the information recording surface 100A of dish 100, and, especially, even the disk maintaining part has when disk cartridge is vertically kept also the structure of holding tray 100 definitely, and these aspects are different with the disk cartridge 323 of the 23rd embodiment.Below, the point different with the disk cartridge 323 of the 23rd embodiment described as major part.Pay identical cross reference number in the inscape identical with the inscape of the disk cartridge of the 23rd embodiment or embodiment before this.

Figure 151 is the vertical view of disk cartridge 324 that the present embodiment of box upper body 12 is removed in expression.In addition, Figure 152 is the sectional view after A-A line along Figure 151 cuts the disk cartridge 324 that comprises box upper body 12.

Shown in Figure 151 and Figure 152, the 1st valve 21 and the 2nd valve 22 obturations, when dish maintaining part 21b, 22a, 22b holding tray 100, on the dish receiving portion 25a of rotatable parts 25 among the 25k, with the outside of coiling the 100 regional 25b that contact on, groove 25p is set.Though the section of groove 25p represented by semicircle in Figure 152, as long as at least than being formed with recess that the dish 100 regional 25b that contact more cave in, groove 25p also can have as other section shapes such as triangle or rectangles so.

The zone that is provided with groove 25p of the top 25k of dish receiving portion 25a by the 1st valve 21 and the 2nd valve 22 obturations, and when dish maintaining part 21b, 22a, 22b holding tray 100, is not positioned at the below of dish 100, and exposes to the outside in the accommodation section in disc bottom.Therefore, in the use of disk cartridge 324, exist in the possibility that dust is piled up in this zone.Under 25k flattens smooth situation on this zone is not provided with groove 25p and makes, on the 2nd 100A attached to dish 100 such as the dust of having piled up, there is the possibility of the following side space 69b of intrusion dish 100.

Corresponding therewith, by on the 25k groove 25p is set on dish receiving portion 25a, dust etc. are stored in the bottom of groove 25p.Therefore, can prevent on the 100A of dust attached to above-mentioned dish 100, or the following side space 69b of intrusion dish 100 such as dust.

Also have, as the detailed description that reference Figure 132 and 142 has carried out, when the 1st valve 21 and the 2nd valve 22 obturations, according in the zone of the otch 25c that rotatable parts 25 are set, dish 100 is in the mode of the sidewall butt joint of accommodation section in disc, make the some C2 unanimity of center with the position of center C 1 skew that is positioned at relative accommodation section in disc of dish 100, holding tray 100.Therefore, in the state of holding tray 100, the exposed portions serve of the top 25k of dish receiving portion 25a is not by will putting the concentric circles of C1 as the center, but by will put C2 as the circumference at center with will put the circular sidewall 12i regulation of C1 as the accommodation section in disc at center.Groove 25p comprises the part that this is regional at least.The radius of a circle of regulation accommodation section in disc sidewall 12i is according to the radius of dish 100 and distance, the shape that this is regional or the big I difference between some C1 and the some C2.But this zone becomes the meniscate shape with shortcoming at least in the otch 25c of rotatable parts 25 part.

Follow the structure of explanation dish maintaining part.Figure 153 and Figure 154 are to take in the vertical view that coils the disk cartridge 324 after 100, and Figure 153 and Figure 154 represent that respectively valve opened state and valve have begun closing state.In these figure, for easy observation, rotatable parts 25 are illustrated by the broken lines.In addition, owing to expressed protuberance 27a that is arranged at the 1st valve 21 and the 2nd valve 22 and the position of coiling maintaining part 21b, 22a, 22b, therefore represent all parts of the 1st valve 21 and the 2nd valve 22 with solid line.

If from the state that Figure 153 represents, the 1st valve 21 and the 2nd valve 22 begin to close, and shown in Figure 154, the dish maintaining part 22a ratio that is arranged at the 2nd valve 22 coils maintaining part 21b, 22b is more first contacts with dish 100, begins to control action so.At this moment, coil the part of maintaining part 22a, be positioned at the below of the slip-off preventing parts 12s that is provided with according to the mode that protrudes in dish peristome 12w, promptly be positioned at more close dish side than slip-off preventing parts 12s.At disk cartridge 324 is under the situation of any posture, all can limit the dish 100 that is contained by slip-off preventing parts 12s, thereby can not take the state outside accommodation section in disc more, therefore coil maintaining part 22a, can contact and control with dish 100 definitely than slip-off preventing parts 12s.This structure, especially disk cartridge 324 in disk drive device by the situation of vertical support under, the performance effect.

As mentioned above, in the present embodiment, below slip-off preventing parts 12s, when mobile, begin to control dish 100 in the part of dish maintaining part 22a.But, no matter which kind of posture disk cartridge 324 is, contact with dish 100 and can control 100 the mode of coiling according to dish maintaining part 22a, be limited in slip-off preventing parts 12s in the scope of the position of the dish 100 in the accommodation section in disc and posture, when dish maintaining part 22a began to contact with dish 100, dish maintaining part 22a also can not be positioned at the below of slip-off preventing parts 12s.But, under the situation of the position separating of the dish maintaining part 22 the when position of slip-off preventing parts 12s begins to contact with dish 100, no matter which kind of posture disk cartridge is, need in the part that slip-off preventing parts 12s is set, will coil 100 spaces that can be positioned at and diminish according to dish maintaining part 22a and dish 100 modes that contact.In this case, existence is difficult to coil 100 situations from disk cartridge 324 taking-ups.Therefore, preferably approaching with the position of slip-off preventing parts 12s with the position of the dish maintaining part 22 of dish 100 when beginning to contact, a part of more preferably coiling maintaining part 22a as mentioned above like that when the below of slip-off preventing parts 12s is mobile, begins to control and coils 100.

If from the state shown in Figure 154, the 1st valve 21 and the 2nd valve 22 are rotated, maintaining part 21b, 22b are coiled in the obturation action of continuation valve so and dish 100 is approaching, and what begin to coil controls.At this moment,, exist in the approaching position of dish maintaining part 21b, 22b and dish 100 by the posture of disk cartridge 324, with dish maintaining part 21b, 22b can not with dish 100 degree that contacts, coil 100 possibilities of giving prominence to.For fear of this unfavorable condition, dish maintaining part 21b, 22b should with dish 100 position contacting on, also can consider to be provided with other slip-off preventing parts.But,, exist so to be difficult to from the possibility of disk cartridge 324 taking-up dishes 100 if this slip-off preventing parts are set.Therefore, in the present embodiment, in initial and the dish 100 dish maintaining part 22a that contacts, the position of change dish 100 and the structure of degree of tilt are set,, coil maintaining part 21b, 22b energy contact disc 100 and also control with after dish 100 contacts.

From Figure 155 to Figure 157, be expansion dish maintaining part 22a and the stereographic map represented.As shown in the figure, dish maintaining part 22a as the position of change dish 100 and the structure of degree of tilt, has the 1st restriction face 142a, the 2nd restriction face 142b.In addition, as embodiment so far describes in detail, has the inclined-plane 22a ' that is used to control dish 100, fixes.When the 2nd valve 22 obturations, dish maintaining part 22a moves on the direction of arrow 140.The 1st restriction face 142a, according to being equipped with configuration with arrow 140 nonparallel modes as the moving direction of dish maintaining part 22a, from the 2nd valve 22, contrary taper (on the 2nd valve 22 sides) tilts.Shown in Figure 155, the 1st restriction face 142a can contact with the rib of the peripheral part of the 1st 100B of dish 100 or the 1st 100B.Shown in Figure 156, the 2nd restriction face 142b is almost parallel with the 2nd valve 22b, can closely touch with the periphery of coiling 100 the 1st 100B is attached.Inclined-plane 22a ' contacts with the 2nd restriction face 142b, and from the 2nd valve 22, contrary taper (on the 2nd valve 22 sides) tilts.Shown in Figure 157, inclined-plane 22 ' a can contact with the rib of the peripheral part of dish 100 the 1st 100B.

Figure 158 and Figure 160 be explanation disk cartridge 324 in disk drive device by the situation of vertical support under, turntable and clamper be from coiling 100 from taking off, in the time of the valve obturation, the stereographic map of the state of dish maintaining part holding tray 100.In addition, Figure 159 and Figure 161 are the Q-Q line sectional views among Figure 158 and Figure 160.With reference to these figure and Figure 155 to Figure 157, explanation dish maintaining part 22a is the posture of confinement plate 100 how.Also have, in Figure 158 and Figure 160, do not represent valve.

Shown in Figure 158, disk cartridge 324 in disk drive device by the situation of vertical support under, if to coiling 100 record and/or reappearing and finish, turntable and clamper are from coiling 100 from taking off, coil 100 bottom separation so, tiltably be placed in the accommodation section in disc from accommodation section in disc.In Figure 158, though in order to illustrate, according to the mode of more clearly coiling 100 posture, omit slip-off preventing parts 12s, 55, the inclination of exaggerative dish 100 and representing, but in fact owing to there is a slip-off preventing parts 12s, 55, therefore at least in slip-off preventing parts 12s, 55 part, dish 100 is accommodated in the accommodation section in disc.

In this case, if the obturation of valve action beginning, dish maintaining part 22a moves to the direction of arrow 140, and a part of coiling maintaining part 22a so as mentioned above like that moves to the below of slip-off preventing parts 12s (Figure 159).And shown in Figure 155, the 1st restriction face 142a of dish maintaining part 22a contacts with the rib of the peripheral part of the 1st 100B of dish 100 or the 1st 100B.The 1st restriction face 142a, boot disk 100, the degree of tilt of change dish is positioned between the 2nd restriction face 142b and the 2nd valve 22 (the perhaps bottom of accommodation section in disc) so that coil 100.Shown in Figure 158, at this moment, dish maintaining part 21b, 22b with dish 100 position contacting on also move, but shown in Figure 159, the inclined-plane 22b ' of dish 22b not with degree that the rib of the 1st 100B of dish 100 contact in, make dish 100 inclinations.

If advance to the moving of the direction of the arrow 140 of dish maintaining part 22a, so shown in Figure 156, dish 100 is by the 2nd restriction face 142b restriction, in Figure 158 by shown in the arrow 141 like that, proofread and correct its degree of tilt so that coil 100 become vertical.Therefore, shown in Figure 160 and Figure 161, the bottom of 100 pairs of accommodation section in disc of dish is almost parallel, in addition, the inclined-plane 22b ' of dish maintaining part 22b (and inclined-plane 21 ' b of dish maintaining part 21b) make dish 100 near the bottom sides of accommodation section in disc, so that can contact with the rib of the periphery of the 1st 100B of dish 100.

If further advance the rotation of valve, shown in Figure 157, the inclined-plane 22a ' of dish maintaining part 22a contacts with the rib of the 1st 100B of dish 100 so.In addition, inclined-plane 21b ', the 22b ' of dish maintaining part 21b, 22b also contact with the rib of the 1st 100B of dish 100.Thus, will coil 100 being held on dish maintaining part 21b, 22a, the 22b.Move by the maintenance that inclined-plane 22a ', 21b ', 22b ' are carried out, owing in embodiment so far, have been described in detail, in this description will be omitted.

As mentioned above, according to present embodiment,, the dish 100 that is contained is not come off from dish peristome 12w, and keep definitely by dish maintaining part 21b, 22a, 22b even under the situation of vertical support disk cartridge 324.

More than, be positioned at the mode of below although understand side according to approaching with coiling maintaining part 21b, dish during vertical support disk cartridge 324 keeps action, but be positioned at the mode of below according to the side approaching with coiling maintaining part 22b, under the situation of vertical support disk cartridge 324, can be by same action holding tray 100 positively.

In addition, level keeps under the situation of disk cartridge 324 in disk drive device, according to such described in the embodiment so far, dish 100, do not contact with the 1st restriction face 142a, the 2nd restriction face 142b of dish maintaining part 22a, 22 ' a contacts with the inclined-plane, next contacts with the inclined-plane 21b ' of dish maintaining part 21b and the inclined-plane 22b ' of dish maintaining part 22b, and is kept by these inclined-planes.

Also have, be arranged at the position of the change dish that coils maintaining part 22a and the structure of degree of tilt, be not limited to the shape shown in Figure 155 etc.If have according to big degree of tilt or sow discord big dish from accommodation section in disc and contact, to coil the mode that contacts with the 2nd restriction face and the 1st restriction face that guides, and according to dish with coil maintaining part 21b, inclined-plane 22a ', the 21b ' of 22a, 22b, 22b ' and contact, the mode that dish maintaining part 21b, 22a, 22b can control dish changes or the position of confinement plate and the 2nd restriction face of degree of tilt, the structure of the position of change dish and degree of tilt also can comprise the face except that the 1st restriction face and the 2nd restriction face so.

(the 25th embodiment)

Below, the 25th embodiment of disk cartridge of the present invention is described.The disk cartridge of present embodiment has by intensity in the raising use and operability etc., improves the structure of practicality.

Figure 162 is the stereographic map that the state behind the disk cartridge 325 of present embodiment is decomposed in expression.In disk cartridge 325, the inscape identical with the disk cartridge of the 23rd embodiment paid identical reference marks.Shown in Figure 162, in disk cartridge 325, claw 25q is arranged on the protuberance 25e, so that the protuberance 25e of the rotatable parts 25 that cooperate with the guiding groove 27e of the 1st valve 21 does not come off from guiding groove 27e.Equally, claw 25r is set on the front end of protuberance 25f.

On the 2nd valve 22, when being arranged on the 1st and the 2nd valve 21,22 and being in blocked state in the center pit 100h of dish outstanding projection 36 and projection 48.

On the box lower body 11 that constitutes box main body, rotatable parts receiving portion 11z is set.Rotatable parts receiving portion 11z when the 1st and the 2nd valve 21,22 is in open state, contacts with the part of the bottom of rotatable parts 25, keeps rotatable parts 25.

In addition, in box lower body 11, when liberate when action at the 1st and the 2nd valve 21,22, on the dish receiving portion 25a of rotatable parts 25 and the 1st valve 21 overlapping areas, recess 11y is set.

Further, on box lower body 11, near magnetic head peristome 11h, have the 1st protuberance 49a and the 2nd protuberance 49b, when the 1st and the 2nd valve 21,22 was in blocked state, the 1st valve 21 and rotatable parts 25 had the 1st protuberance 63a and the 2nd protuberance 63b that docks with the 1st protuberance 49a and the 2nd protuberance 49b of box lower body 11 respectively.

Below, these features are described in turn.Figure 163 is expression vertical view above it after disk cartridge 325 removes box upper body 12 and slip-off preventing parts 55, and Figure 164 represents the R-R section of Figure 163.R '-R ' section with protuberance 25f of claw 25r also has identical construction.

As shown in these figures, on the front end of the protuberance 25e of rotatable parts 25 claw 25q is set, claw 25q is between box lower body 11 and the 1st valve 21.In addition, claw 25q is along extending as the radial direction of the dish of the direction of the R-R section shown in Figure 163 (direction towards the center of box).Claw 25q also can extend to other direction.There is the advantage that is shaped and is easy to make rotatable parts 25 by metal pattern in the edge under the situation of the claw 25q that the radius centered direction of dish is extended only forming.

Shown in Figure 164, also can in the coupling part of claw 25q and protuberance 25e, be provided with towards the rake 25q ' of dish peristome side.By the intensity that rake 25q ' can strengthen the bonding part of protuberance 25e and claw 25q is set.Under the situation that rake 25q ' is set, near the relative part of the rake 25q ' with the guiding groove 27e of the 1st valve 21, rake 21 ' is set also.

In the lower inside 11u of box lower body 11, groove 11e ' is set, its acceptance is provided with the front end of the protuberance 25e of claw 25q.Because by claw 25q is set, the area relative with the lower inside 11u of the fore-end of protuberance 25 becomes big, so the width of groove 11e ' is bigger than the width of the groove 11e of the disk cartridge of the 23rd embodiment.

When making disk cartridge 325, the width that groove is set on the end of guiding groove 27e becomes big loading port 27e ', so that have the protuberance 25e of the claw 25q guiding groove 27e that easily packs into.Loading port 27e ', under the state of the 1st and the 2nd valve 21,22 obturation, the protuberance 25e that is arranged at rotatable parts 25 is in the part zone in addition.The 27e ' of portion that preferably packs into when the 1st and the 2nd valve 21,22 is in open state, is arranged at the end of the guiding groove 27e that is positioned at protuberance 25e.

As mentioned above, by claw 25q and claw 25r are set, can prevent that protuberance 25e, the 25f of rotatable parts 25 from coming off from the guiding groove 27e of the 1st valve 21 and the guiding groove 27f of the 2nd valve 22.Especially, when the 1st and the 2nd valve 21,22 is in blocked state, under the situation of employing dish maintaining part 21b, 22a, 22b holding tray 100, by in disk cartridge 325, increasing the impact of drop impact etc., on the 1st and the 2nd valve 21,22, apply strong load and impact between dish maintaining part 21b, 22a, 22b.In this case, protuberance 25e, the 25f that can effectively prevent rotatable parts 25 comes off from guiding groove 27e, 27f.Therefore, can obtain falling the disk cartridge 325 that shock-resistant ability is big, practicality is high.

Also have, in the present embodiment, though claw 25q and claw 25r are set in two sides of protuberance 25e and protuberance 25f, but according to the distance between the position in the rotatable parts 25 of protuberance 25e and protuberance 25f or dish maintaining part 21b, 22a, the 22b etc., even claw 25q or claw 25r are not set, under the also low situation of the possibility that protuberance 25e or protuberance 25f come off from guiding groove 27e or guiding groove 27f, also claw 25q or claw 25r can be set.Promptly also can claw be set a either party at protuberance 25e and protuberance 25f.

Then, with reference to Figure 165, projection outstanding in the center pit 100h of subtend dish 100 describes.Figure 165 is identical with Figure 163, is expression vertical view above it after disk cartridge 325 removes box upper body 12 and slip-off preventing parts 55, represents the 1st and the 2nd valve 21,22 opened state.

Like that, identical shown in Figure 165 with the 21st embodiment or the 23rd embodiment, projection 35 is set on the 1st valve.On the other hand, on the 2nd valve 22,, also form projection 48 except projection 36.Projection 35, top more outstanding than the protuberance 21w of the 1st valve 21, projection 36 and 48 top more outstanding than protuberance 22w.In addition, when the 1st and the 2nd valve 21,22 was in blocked state, projection 35,36,48 was positioned on the inboard of the 1st and the 2nd valve 21,22 formed hole 20h.When the 1st and the 2nd valve 21,22 is in blocked state, because hole 20h is according to being provided with the overlapping mode of dish 100 center pit 100h, therefore when the 1st and the 2nd valve 21,22 is in blocked state, projection 35,36,48 is outstanding in the center pit 100h of dish 100, near the center pit 100h of protuberance 21w, 22w holding tray 100.

If the 1st and the 2nd valve 21,22 begins to carry out opening operation, projection 35,36,48 moves to the outer circumferential side of dish 100 from coiling 100 center pit 100h inside so.Therefore, contact with dish 100 according to the top of projection 35,36,48, the mode of lifting dish 100 keeps.This moment, projection 35,36,48 contacted with the non-signal record zone that 100e by dish 100 signal recording surface 100A represents.Because projection 35,36,48 is more outstanding than protuberance 21w, 22w, therefore contact with projection 35,36,48 by signal recording surface 100A, protuberance 21w and 22w become the non-contacting state with signal recording surface 100A.Thus, can prevent protuberance 21w, 22w or protuberance 35d, 36d and signal recording surface 100A, the zone contact of special signal record.

In addition, contact with dish 100 by 3 projections 35,36,48, rolling stabilizing ground holding tray 100 can not prevent definitely that the signal record zone of signal recording surface 100A from contacting with the 1st and the 2nd valve 21,22.

Shown in Figure 165, under the 1st and the 2nd valve 21,22 wide-open states, any all stops at projection 35,36,48 in the non-signal record zone that the 100e by signal recording surface 100A represents.Therefore, the possibility that does not have projection 35,36,48 to contact with the signal record zone of signal recording surface 100A.

Under the situation of the 1st and the 2nd valve 21,22 obturations, projection 35,36,48 is lifted under the state of dish 100, and the 1st and the 2nd valve 21,22 also moves.Therefore, prevent that protuberance 21w, 22w or protuberance 35d, 36d from contacting with the signal record zone of signal recording surface 100A.

Therefore, when the 1st and the 2nd valve 21,22 is open and inaccessible, by adopting 3 projections 35,36,48, but the bottom of the relative accommodation section in disc in limit or the 1st and the 2nd valve 21,22 holding tray 100 abreast almost, dish 100 is lifted on the limit.Therefore, the signal record zone that can prevent signal recording surface 100A definitely contacts with the 1st and the 2nd valve 21,22.

Then, with reference to Figure 166 to Figure 171, rotatable parts receiving portion 11z is described.Figure 166 and Figure 168, identical with Figure 163, be expression vertical view above it after disk cartridge 325 removes box upper body 12 and slip-off preventing parts 55.Figure 166 represents the state of the 1st and the 2nd valve 21,22 obturations, and Figure 168 represents the 1st and the 2nd valve 21,22 opened state.Figure 167 and 169 represents the S-S section of Figure 166 and 168 respectively.

Rotatable parts receiving portion 11z, with the magnetic head peristome 11h adjacency that is arranged at box lower body 11, have on the lower inside 11u that is arranged on box lower body 11, towards the dish peristome inclined-plane 11z '.The side 11a of the box lower body 11 of magnetic head peristome 11h is set, forms to the mode that tightens peristome 11c side according to stretching into along magnetic head peristome 11h a bit, 11z links to each other with the rotatable parts receiving portion.

Shown in Figure 166, under the state of the 1st and the 2nd valve 21,22 obturations, the protuberance 27a of the 1st valve 21 is positioned near the rotatable parts receiving portion 11z.Therefore, shown in Figure 167, rotatable parts receiving portion 11z contacts with the protuberance 27a of the 1st valve 21.On the protuberance 27a of the 1st valve 21, the inclined-plane 27a ' corresponding with the inclined-plane 11z ' of rotatable parts receiving portion 11z is set.At this moment, rotatable parts 25 are positioned on the 1st valve 21, and 11z does not contact with the rotatable parts receiving portion.

On the other hand, shown in Figure 168, under the 1st and the 2nd valve 21,22 opened state, the 1st valve 21 be in the magnetic head peristome away from the position.The 1st valve 21 is not positioned near the rotatable parts receiving portion 11z.Therefore, shown in Figure 169, between the bottom surface of the lower inside 11u of box lower body 11 and rotatable parts 25, generate the space S of representing by profile line 1.

But the angle 25i ' of the bottom of the sidewall 25i by rotatable parts 25 docks with the inclined-plane 11z ' of rotatable parts receiving portion 11z, though formed space S 1, rotatable parts receiving portion 11z also keeps rotatable parts 25 with the height of regulation.Thus, can positively guarantee to cross over distance L 1 between the back side of following and box lower body 11 of bridge portion 25v of sidewall 25i of the otch 25c that is arranged at rotatable parts 25 especially.

With reference to Figure 170 and Figure 171, further specify this effect.Figure 170 and Figure 171 represent the T-T section among Figure 168, and Figure 170 represents to have the section of the present embodiment of rotatable parts receiving portion 11z, and Figure 171 represents not have the section of the box of rotatable parts receiving portion 11z.

As mentioned above, under the 1st and the 2nd valve 21,22 opened state, because the 1st valve 21 is in the position of separating from magnetic head peristome 11h, so near the magnetic head peristome 11h of the 1st valve 21 sides, span S1 on box lower body 11.Shown in Figure 171, under the situation that does not have rotatable parts receiving portion 11z, according to the bending of rotatable parts 25 etc., the part of the dish receiving portion 25a of rotatable parts 25 exists deformable to enter possibility in this space S 1.At this moment, the 25v of bridge portion of sidewall 25i is sagging in magnetic head peristome 11h.Shown in Figure 171, if the 25v of bridge portion is sagging on magnetic head peristome 11h, disturb coiling 100 photoheads that conduct interviews and the 25v of bridge portion so, produce the problem that photohead can not correctly move.

To this, shown in Figure 170, be provided with under the situation of rotatable parts receiving portion 11z, as mentioned above, keep rotatable parts 25 by rotatable parts receiving portion 11z, can prevent that the part of coiling receiving portion 25a from entering in the space S 1.Corresponding therewith, prevent that the 25v of bridge portion from hanging down in magnetic head peristome 11h, can guarantee that photohead is to coiling the space of 100 visits.

Then, the recess 11y that is arranged at box lower body 11 is described.Figure 172 and Figure 174, it is expression vertical view above it after disk cartridge 325 removes box upper body 12 and slip-off preventing parts 55, Figure 172 is the state that the 1st and the 2nd valve 21,22 is in the opening operation process, and Figure 174 represents the 1st and the 2nd valve 21,22 opened state.Figure 173 represents the U-U section of Figure 172.

Shown in Figure 172 and Figure 174, recess 11y is set on the lower inside 11u of box lower body 11.Recess 11y, when the 1st and the 2nd valve 21,22 is inaccessible and open, the otch 25c that is arranged on rotatable parts 25 by and dish receiving portion 25a and the 1st valve 21 overlapping areas on.Recess 11y comprises the part that is positioned at least the 1 valve 21 and the below of dish receiving portion 25a overlapping areas, preferably has fully the area and the degree of depth so that the 1st valve 21 is flexible in lower inside 11u side.In Figure 172, though recess 11y has the trapezoidal shape that the bight rounds, recess 11y also can have rectangle or other shape.

Open or during inaccessible action at the 1st and the 2nd valve 21,22, near the front end of the 1st valve 21, though overlapping with dish receiving portion 25a in open state and blocked state, opening operation and inaccessible the action midway, by being arranged at the below of the otch 25c that coils receiving portion 25a.At this moment, if the 1st valve or rotatable parts 25 bendings, perhaps its thickness produces fluctuation, coils the lower inside 11u temporary transient perk of receiving portion 25a from box lower body 11 so.And with dish receiving portion 25a when overlapping once more, the 1st valve 21 contact the possibility of the friction that the existence generation is big with dish receiving portion 25a.To this, under the situation that recess 11y is set, as double dot dash line is represented among Figure 173, the 1st valve 21, enter into such distortion in the formed space S of recess 11y 2 by carrying out its part, can reduce and the contacting or friction that contact brings etc. of the dish receiving portion 25a of rotatable parts 25.

According to this structure, when the on-off action of valve, reduce the load of the friction etc. between rotatable parts 25 and the 1st valve 21, can successfully carry out the on-off action of the valve that moves of the rotational action of rotatable parts 25 and rotatable parts 25.Therefore, can improve the operability of disk cartridge 325.

In addition, in the present embodiment, though on the zone of the lower inside 11u that the 1st valve 21 is passed through, recess 11y is set, but also can consider rotation direction according to rotatable parts 25, thereby along with the inaccessible and opening of valve, the part of the 2nd valve 22 is by the such formation of otch 25c of rotatable parts 25.In this case, also can in the zone of the lower inside 11u that the 2nd valve 22 passes through, recess 11y be set.

Then, illustrate when valve is in blocked state, prevent the structure that rocks of the 1st and the 2nd valve 21,22 and rotatable parts.Figure 175 is identical with Figure 163, is expression vertical view above it after disk cartridge 325 removes box upper body 12 and slip-off preventing parts 55, and Figure 176 is that expression enlarges its a part of vertical view.

Shown in Figure 175 and Figure 176, in box lower body 11, be provided with and magnetic head peristome 11h adjacency, at box central side outstanding the 1st protuberance 49a and the 2nd protuberance 49b.The 1st protuberance 49a and the 2nd protuberance 49b link to each other with the sidewall 11a of box lower body 11.On the other hand, when the 1st valve and the 2nd valve 21,22 are in blocked state, on the protuberance 27a that the 1st protuberance 63a that will cooperate respectively with the 1st protuberance 49a and the 2nd protuberance 49b and the 2nd protuberance 63b are arranged on the 1st valve and the sidewall 25i of rotatable parts 25.

The 1st protuberance 63a of the 1st valve 21 and the 1st protuberance 49a of box lower body 11 dock mutually when arrow 22A direction moves at the 1st valve 21, limit moving of the 1st valve 21.In addition, the 2nd protuberance 63b of rotatable parts 25 and the 1st protuberance 49b of box lower body 11 dock mutually when the direction of arrow 21A moves at rotatable parts 25, the rotation of restriction rotatable parts 25.Move to the direction of arrow 21A by restriction rotatable parts 25, also can limit the 2nd valve 22 and move to the 21A direction.

According to reference Figure 142, in content described in the 23rd embodiment, the end that is arranged at the guiding groove 27e of the 1st valve 21 and is arranged at the guiding groove 28f of the 2nd valve 22, when valve is inaccessible, the protuberance 25e of the 1st valve 21 that cooperates with guiding groove 27e and guiding groove 28f respectively and the protuberance 25f of the 2nd valve 22 extend along vertical such arrow 27E with the direction (25E and 25F) that moves and the direction of 28F along with the opening operation of valve.Therefore, limit the 1st valve 21 and move, limit the 2nd valve 22 and move to the direction of arrow 22A to the direction of arrow 21A.

Therefore, limit the 1st valve 21 and the 2nd valve 22, move to directions of arrow 21A according to these structures, or move, prevent rocking of the 1st valve 21 in the state of valve obturation and the 2nd valve 22 to the direction of arrow 22A.In addition, because the 1st valve 21 and the 2nd valve 22, can keep normal position, dish maintaining part 22a, the 22b that therefore can be kept 21b and the 2nd valve 22 by the dish of the 1st valve 21 be holding tray definitely with not rocking.

In addition, at this moment, though restriction rotatable parts 25 are so that to the direction rotation of arrow 21A, can rotate to the direction of arrow 22A.Therefore, rotate to the direction of arrow 22A, can carry out 2 opening operations of valve by making rotatable parts 25.

Shown in Figure 175,, when the valve blocked state,, the fixedly lock 44 of rotatable parts 25 can be set also in order not make the opening operation of the valve that rotatable parts 25 rotate except above-mentioned structure.For example, lock 44 has elastic 44b, wrist 44c, is arranged at the claw 44d and the operating portion 44f of the front end of wrist 44c.Lock 44 is supported on the box lower body 11 by rotation axis 44a, and by press operating part 44f, 44a shakes as axle with rotation axis.Operating portion 44f is outstanding from the opening 11r ' that is arranged at box lower body 11.In addition, elastic 44b docks with sidewall 11a.

On rotatable parts 25, under the state of valve obturation, the opening 25s that cooperates with the claw 44d of wrist 44c is set.Also can replace the opening 25s that cooperates with claw 44d by the groove that cooperates with claw 44d.

Shown in Figure 175, under the state of valve obturation,, therefore limit rotatable parts 25 so that do not rotate along the direction of arrow 21A or the direction of arrow 22A because the claw 44d of lock 44 is engaged on the opening 25s of rotatable parts 25.In addition, under the situation of removing lock, limit press operating part 44f, the limit makes rotatable parts 25 rotate along the direction of arrow 22A.Thus, cooperate disengagements, rotatable parts 25 rotations between the opening 25s of rotatable parts 25 and lock 44 the claw 44d.

Have the lock 44 of this structure by design, under the state of valve obturation, restriction rotatable parts 25 rotate along the direction of arrow 21A and the direction of arrow 22A.Thus, except the effect of above-mentioned structure, when valve is inaccessible, can prevent rocking of the 1st and the 2nd valve 21,22 and rocking of rotatable parts 25, more properly holding tray.

(the 26th embodiment)

Below, the 26th embodiment of disk cartridge of the present invention is described.The disk cartridge of present embodiment also has by intensity in the raising use and dust tightness etc., and improves the structure of practicality.

Figure 177 is a stereographic map of representing to decompose the state behind the disk cartridge 326 of present embodiment.In disk cartridge 326, and pay identical reference marks in the identical inscape of disk cartridge of the 25th embodiment or embodiment before this.As described below, in disk cartridge 325, slip-off preventing parts 34 have can easily be installed in box main body 10 above, be difficult to after the installation take out from box main body 10, in addition, do not remain on the structure on the box main body 10 with rocking.

Rotatable parts 25, even have when valve is open, dish 100 moves in the dish maintaining part, the information recording area that also is difficult in dish 100 adheres to the structure of scar.In addition, at this moment, the part of exposing from the magnetic head peristome of rotatable parts 25 is difficult to distortion.

Be arranged at dish maintaining part 21b, the 22b of valve 21,22, taking under the state of dish, disk cartridge 326 is fallen, also be difficult to the structure that dish 100 is flown out by impact from disk cartridge 326 even have. Valve 21,22 and rotatable parts 25 also have the structure that is produced scar by the impact that falls on the information recording surface of dish 100.

In addition, disk cartridge 326 has, and dust or dust are difficult to invade in the box main body 10 from magnetic head peristome 11h and chucking peristome 11c, and dust or dust are difficult to attached to the structure on the information recording surface 100A of dish 100.

Also have, in the disk cartridge 326 of present embodiment, rotatable parts 25 have, by a pair of recess that is arranged at its columnar side and be clamped in the operating portion 25j that the gear part in the recess constitutes.At the valve that opens and closes disk cartridge 326 21,22 o'clock, adopt to have a pair of protuberance that cooperates with a pair of recess and the gear part of rotatable parts 25 and the discharge gate operating mechanism of gear part, make rotatable parts 25 rotations.Disk cartridge 326 has Lock Part 98, and it has a protuberance that recess cooperates with rotatable parts 25.When valve was in blocked state, the protuberance of Lock Part 98 cooperated with the recess of rotatable parts 25, and rotatable parts 25 rotate, and prevent valve action.In addition, shown in Figure 177, disk cartridge 326 also can have the slide unit 99 of the kind that is used for the judgement dish.By slide unit 99 is moved, can close the hole (recess) of the assigned position at the back side that is arranged at box main body 12.This position can be used in the judgement or the write protection of dish kind.

Describe the structure that improves above-mentioned practicality in detail.At first, slip-off preventing parts 34 and the structure that the box upper body 12 of slip-off preventing parts 34 is installed are described.Figure 178 is illustrated under the state that takes off slip-off preventing parts 34, slip-off preventing parts 34 and near the stereographic map in zone that slip-off preventing parts 34 are installed.Shown in Figure 178, slip-off preventing parts 34 have a pair of fitting pin 34a, 34a ' and a pair of register pin 34b, 34b '.In the zone of the slip-off preventing parts 34 of mounting box upper body 12, form recess 12k, in the bottom of recess 12k, form a pair of mating holes 64c, 64c ' that inserts fitting pin 34a, 34a ' and pilot hole 64d, the 64d ' that inserts register pin 34b, 34b '.Be installed at slip-off preventing parts 34 under the state of box upper body 12, a part of 34d of slip-off preventing parts 34 is outstanding to dish peristome 12w, prevents to coil 100 and comes off from dish peristome 12w.

Figure 179 represents the pilot hole 64d of 12 box upper bodies 12, crosscut box upper body and the section of mating holes 64c.In Figure 179, though only represented pilot hole 64d and mating holes 64c, pilot hole 64d ' and mating holes 64c ' also have the shape shown in Figure 179.Shown in Figure 179, pilot hole 64d and mating holes 64c are limited by boss 64a that extends towards the 1st direction of box lower body 11 from box upper body 12 respectively and the medial surface of boss 64b, and pilot hole 64d and mating holes 64c also extend to the 1st direction.Shown in Figure 179, the external diameter of the internal diameter of pilot hole 64d and pilot hole 34b is almost equal.Therefore, insert at pilot hole 34b under the state of pilot hole 64d, produce the gap hardly between pilot hole 34b and pilot hole 64d, pilot hole 64d keeps register pin 34b so that pilot hole 34b does not move to the direction vertical with the 1st direction.

Front end at the fitting pin 34a of slip-off preventing parts 34 is provided with the 1st auxiliary section 34c.In the present embodiment, the 1st auxiliary section 34c has big claw shape to the outside of fitting pin 34a.Though fitting pin 34a is formed by the rubber-like material, the bigger slightly ground of the profile of mating holes 64c relative engagement hole 34a form, and to push big auxiliary section 34c inboard and dwindle to allow to outside side, is inserted into mating holes 64c sleekly.

If fitting pin 34a is inserted into the mating holes 64c by boss 64a regulation, auxiliary section 34c is outstanding to the front end of boss 64a so.Thus, auxiliary section 34c and boss 64a cooperate so that fitting pin 34a does not move to the 1st direction.That is, the front end of boss 64a becomes the 2nd auxiliary section that cooperates with the 1st auxiliary section.In the present embodiment, though the 1st auxiliary section 34c of claw-like is cooperated with the 2nd auxiliary section as boss 64a front end, the 1st auxiliary section 34c and the 2nd auxiliary section also can be formed by other structure.For example, the 1st auxiliary section 34c also is arranged at the recess of fitting pin 34a side, and the 2nd auxiliary section also is formed at the boss of the medial surface of regulation mating holes 64c.

As mentioned above, according to present embodiment, can on the direction vertical, determine the position of slip-off preventing parts 34 by register pin 34b, 34b ' and pilot hole 64d, 64d ' with the 1st direction.In addition, can be by fitting pin 34a, 34a ' and mating holes 64c, 64c ', the position of decision slip-off preventing parts 34 on the 1st direction.Therefore, slip-off preventing parts 34 all are difficult to move to any direction, can slip-off preventing parts 34 be installed on the box upper body 12 with not rocking.Because the slip-off preventing parts of installing 34 are not fixed with rocking, even therefore compelling force is pulled outwardly slip-off preventing parts 34 and also can break away from, or crooked.

In addition, move such fit structure to the 1st direction, so the also comparable fitting pin 34a of mating holes 64c is big slightly because fitting pin 34a and mating holes 64c, fitting pin 34a have restriction respectively.On the other hand, owing on register pin 34b that the direction vertical with the 1st direction moves and pilot hole 64d, the auxiliary section is not set, therefore easily register pin 34b is inserted pilot hole 64d in restriction.Therefore, according to above-mentioned structure, can easily slip-off preventing parts 34 be installed on the box upper body 12.

As mentioned above, register pin, pilot hole, and have one respectively at least in the combination of fitting pin, mating holes, bring into play above-mentioned effect so.Thereby the number that is arranged at the register pin of slip-off preventing parts 34 and fitting pin can at random be selected according to material of the shape of slip-off preventing parts 34 or size, formation slip-off preventing parts 34 etc.As described in present embodiment, under the situation of the length of side 1/2 of slip-off preventing parts 34 relative box main bodies 10 (box upper body 12 and box lower body 11), preferred slip-off preventing parts 34 are provided with plural register pin and pilot hole respectively.

Then, illustrate and be arranged at the structure that is used for being difficult to paying the rotatable parts 25 of scar at the data recording area of dish 100.Figure 180 is illustrated near the structure of state lower wall maintaining part 22b of valve 21,22 obturations.On the dish receiving portion 25a of rotatable parts 25,, the groove 25p that has illustrated in the 23rd embodiment is arranged on and the outside of coiling the 100 regional 25b that contact with reference to Figure 152.Shown in Figure 180, rotatable parts 25 have a plurality of Embedded Divisions 66 that the mode according to the part of landfill groove 25p designs.

Figure 181 is illustrated under the state of valve 21,22 obturations, the section of an Embedded Division 66 of crosscut.Shown in Figure 181, Embedded Division 66 fills up groove 25p fully on profile direction, and 66a tilts to the central side of dish peristome above it.Because under the state of valve 21,22 obturations, the dish maintaining part 21b, 22a, the 22b that are arranged at valve 21,22 control dish and fixing, therefore coil 100 and contact with the regional 25b of rotatable parts 25.

Shown in Figure 182, if valve 21,22 is open, owing to dish maintaining part 21b, 22a, 22b separate sale at reduced prices 100, therefore coiling 100 can move in accommodation section in disc 10d so.Move as fruit tray 100, approaching with the side 12i of box upper body 12, coil 100 so and just climb up Embedded Division 66, the rib that is positioned at the periphery of signal recording surface 100A contacts with the inclined-plane of Embedded Division 66.Therefore, can prevent that signal recording surface 100A from contacting with the other parts of rotatable parts 25, can prevent that especially signal record zone 100d from contacting with dish receiving portion 25a, produces scar.

Because Embedded Division 66 landfill groove 25p if therefore form Embedded Division 66 continuously across groove 25p integral body, have damaged the dust reduction capability that kerve 25p has been described in the 23rd embodiment so.Therefore, preferably according to the residual mode of groove 15p, a plurality of Embedded Divisions 66 are set intermittently.On the other hand, if the length of the circumference of Embedded Division 66 is below the 0.5mm, so at dish 100 and Embedded Division 66 when touching, the inclined-plane 66a of Embedded Division 66 diminishes with dish 100 zones that contact, and will focus on a part from the power of coiling 100 Embedded Division 66 acceptance.Its result exists in the possibility that produces the vestige of scar or contact in the dish 100.Therefore, the length of the circumference of preferred Embedded Division 66 is more than 1mm.The upper limit of the length of circumference depends on the size of the dish 100 that disk cartridge 326 taken in.For example, be under 5 inches the situation, to be preferably below the 10mm at dish 100 diameter.The length of suitable circumference is 2mm～5mm.

In addition, even have the Embedded Division 66 of the length of above-mentioned scope, when valve is inaccessible, also not preferably with dish maintaining part 21b, 22a, 22b position overlapped, the very near position of perhaps coiling maintaining part 21b, 22a, 22b is provided with Embedded Division 66.This be because, when valve is inaccessible, under the approaching situation of dish maintaining part 21b, 22a, 22b and Embedded Division 66, if the external force that strengthens outside on disk cartridge, sign face 100B side at dish 100 contacts the power of disperseing by dish maintaining part 21b, 22a, 22b with rib so, concentrate on Embedded Division 66 in information recording surface 100A side, exist in the dish 100 by producing the possibility of the vestige of scar or contact with contacting of Embedded Division 66.

Then, even, on disk cartridge 326, apply big impact, be difficult to dish 100 be described from disk cartridge 326 outstanding structures by impact to taking under the state of dish.

Figure 183 is expression, and when valve was inaccessible, dish maintaining part 21b, 22a, 22b were near the stereographic map of the structure the dish maintaining part 22b of situation of state of holding tray 100.Figure 184 is the section that expression is included in the dish maintaining part 22b of the structure shown in Figure 183.In the illustrated disk cartridge, each coils maintaining part and has an inclined-plane that is used for holding tray in the 22nd embodiment etc.In the present embodiment, the dish maintaining part has a plurality of.Below, though dish maintaining part 22b is illustrated, also have identical construction with dish maintaining part 21b.

Shown in Figure 183 and Figure 184, dish maintaining part 22b is disposed on the direction of bottom vertical of accommodation section in disc, has the 1st inclined-plane 67a and the 2nd inclined-plane 67c and the surface level 67b that tilt according to the mode towards the bottom.Surface level 67b is arranged between the 1st inclined-plane 67a and the 2nd inclined-plane 67c, and is almost parallel with the bottom.As having described ground in the 22nd embodiment in detail, on the bottom of the dish maintaining part 22b that valve 22 is set, tapered portion 26c is set, on the zone that the dish maintaining part 22b of box lower body 11 is positioned at, recess 11x is set.Owing to the regional 26b less thick of the tapered portion 26c of valve 22 is set, therefore can produces elastic deformation.

Shown in Figure 184, when valve was in blocked state, the rib 100c of dish 100 docked with the 2nd inclined-plane 67b of dish maintaining part 22b.Thus, the limit will coil 100 by the bottom side to accommodation section in disc, and dish 100, shaft collar 100 are controlled in the limit.Usually, at this state, can move disk cartridge 326.

Under the state shown in Figure 184, if on disk cartridge 326, apply some strong external force that disk cartridge 326 is fallen etc., inertial force is worked on 100 at dish so, and shown in the arrow among Figure 184, the power of pushing laterally from 100 the center of coiling is applied on the dish maintaining part 22b.Therefore, shown in Figure 185, the regional 26b distortion of valve 22, the regional 26b of valve 22 stretches among the recess 11x of box lower body 11.At this moment, because dish maintaining part 22b tilts laterally, the 2nd inclined-plane 67c that therefore coils maintaining part 22b separates from coiling 100 rib, separates sale at reduced prices 100.

The degree of tilt of dish maintaining part 22b is docked with the stopper that is arranged at rotatable parts 25 (stopper) 25t by dish maintaining part 22b and to be limited, and can prevent to coil maintaining part 22b inclination laterally more than this.

From the dish 100 of dish maintaining part 22b liberation,, further there is the possibility that comes off power work such from dish peristome 12w by the impact that is brought by spiral etc.But even under the state that dish maintaining part 22b tilts, the surface level 67b of dish maintaining part also is positioned at the top of the periphery of dish 100.Therefore, 100-docks with surface level 67b by dish, prevents to come off from dish peristome 12w.

The 1st inclined-plane of dish maintaining part 22b by when valve is inaccessible, dock with the rib 100c of dish 100 from the position of the top as far as possible of accommodation section in disc, with the suitable position of dish 100 from the position importing holding tray 100 stipulated.This function is identical with the detailed description of carrying out as the action of the inclined-plane 22b ' that coils maintaining part 22b before the 25th embodiment.

As mentioned above, according to present embodiment,,, also can prevent to coil 100 and come off from dish peristome 12w by the surface level 67b of dish maintaining part 22b even in the disk cartridge 326 of the state of holding tray, apply big external force.

The structure of the distortion that prevents rotatable parts 25 then, is described.To be expression remove stereographic map behind the box upper body 12, expression valve opened state from disk cartridge 326 to Figure 186.Figure 187 enlarges near the front end of magnetic head peristome 11h and the stereographic map of expression.Shown in Figure 186, valve 21,22 is under the state of open magnetic head peristome 11h, in order to make not shown photohead, on the dish receiving portion 25a of rotatable parts 25, otch 25c is set from magnetic head peristome 11h accesses disk 100 (not shown)s without barrier.This otch 25c arrives the part of the side 25i of rotatable parts 25 from dish receiving portion 25a.

But, by otch 25c is set, when valve open, attenuate as the 25v of bridge portion of the part of the magnetic head peristome 11h that is positioned at side 25i, crooked easily.Therefore, guarantee the space of the below of the 25v of bridge portion, when the photohead accesses disk, according to the discontiguous mode of the 25v of bridge portion, a pair of support portion 11k of the magnetic head peristome 11h of holding case lower body 11 is set.Support portion 11k, integrally formed with the sidewall of box lower body 11, when valve is open, by docking with the bottom of the 25v of bridge portion, in the height of the restriction bridge 25v of portion, by peristome 11h as far as possible near support brachium pontis 25v prevent the distortion of the 25v of bridge portion.Shown in Figure 187, only dock according to support portion 25v with the 25v of bridge portion, with the mode that other the part of the sidewall 25i of rotatable parts 25 is not docked, the 25v of bridge portion compares in periphery side-prominent with the other parts of sidewall 25i.

According to above-mentioned structure, when valve was open, the position of the 25v of bridge portion of restriction rotatable parts 25 can be guaranteed the space that photohead is used to visit definitely.

Then, the structure that is difficult to produce scar on the signal recording surface of dish 100 is described.To be expression remove stereographic map behind the box upper body 12, the state of expression valve obturation from disk cartridge 326 to Figure 188.Shown in Figure 188 profile line, when valve is inaccessible, among the face relative of valve 21,22 and the top 25k of the dish receiving portion 25a that rotatable parts 25 are had with dish 100 (not shown)s, when valve is inaccessible, with dish 100 discontiguous non-contact areas in apply fold processing (processing of pears skin spot formula).The concavo-convex difference of preferred fold processing is 5 μ m～20 μ m.In the present embodiment, for example implement to have the fold processing of the concavo-convex difference of 10 μ m.Also have, preferably when valve is inaccessible, be positioned at the outside of non-contact area, and on contact area, do not apply fold processing with dish 100 contact areas that contact.This is because need make dish 100 and contact area driving fit, prevents the intrusion of dust or dust.

Implement the zone of above-mentioned fold processing,, under the state of holding tray 100, do not contact with dish 100 in the valve obturation.But, under the state of holding tray 100, disk cartridge 326 fallen etc. and apply under the situation of large impact the possibility that the information recording surface of existence dish 100 contacts with above-mentioned zone.In this case, even the information recording surface of hypothesis dish 100 contacts with above-mentioned zone, by crimp shape, its contact point becomes a contact.Therefore, can reduce the scar that on information recording surface, produces, prevent to be recorded in the signal quality deterioration of the data of information recording surface.

In addition, in disk cartridge 326, the sign face of dish exposes from dish peristome 12w.Therefore, exist by the user and wait the sign face of pushing, the possibility that dish bending, above-mentioned zone contact with the information recording surface of dish with finger.In this case, by fold processing, information recording surface and the contact point of above-mentioned zone become and contact, and compare the scar that can reduce to produce when contacting with face that produces under not applying the situation that fold processes or line in information recording surface.

Also have, in Figure 188,, also can apply fold processing in this part though on the zone between protuberance 20w and the protuberance 20d, do not apply fold processing.

The dust-proof mechanism of disk cartridge 326 then, is described.The top of Figure 189 is from the vertical view towards the observed valve 21,22 of box lower body 11 sides, and the bottom of Figure 189 is from the vertical view towards the observed valve 21,22 of the medial surface of box lower body 11.In addition, to be expression remove stereographic map behind box upper body 12 and the rotatable parts 25, the state of expression valve obturation from disk cartridge 326 to Figure 190.Figure 191 is from the structure shown in the being seen Figure 190 of the direction of arrow, the sectional view of crosscut magnetic head peristome 11h.

As shown in these figures, on around magnetic head peristome 11h on the medial surface 11u of box lower body 11 and the chucking peristome 11c, protuberance 74a is set.Protuberance 74a, extend from relative two edge magnetic head peristome 11h and chucking peristome 11c according to the mode of clamping magnetic head peristome 11h, the protuberance 74a that extends from both sides becomes one near box lower body 11 central authorities, to the rotation axis 39 ' extension of valve 21,22.

In addition, on the face relative of valve 21,22, be arranged on the 1st protuberance 73a, the 2nd protuberance 73b, the 1st protuberance 73a ' and the 2nd protuberance 73b ' that valve is provided with according to the mode of the protuberance 74a of holding case lower body 11 when inaccessible with medial surface 11u.

Shown in Figure 191, when valve was inaccessible, the protuberance 74a of box lower body 11 cooperated with the recess that is formed by the 1st protuberance 73a that is arranged at valve 21,22 and the 2nd protuberance 73b.Thus, the inside of disk cartridge 326 is airtight from magnetic head peristome 11h and chucking peristome 11c, prevents that dust or dust are from magnetic head peristome 11h and chucking peristome 11c intrusion.

In addition, shown in Figure 189 and Figure 190, on the face of the 1st protuberance 73a that valve 21,22 is set and the 2nd protuberance 73b, further also can be provided with and have and the 1st protuberance 73a and the 2nd protuberance 73b height much at one, along the 3rd protuberance 73c, 73c ' that the rotation hole 37 ', 38 ' of valve 21,22 is provided with as the circular arc at center.The 3rd protuberance 73c, 73c ', contact the position of restriction valve 21,22 in order to prevent valve 21,22 distortion with the medial surface 11u of box lower body 11.Shown in Figure 189, the 3rd protuberance 73c, 73c ' also can be provided with more than two on valve 21,22 respectively.

The manufacture method of the disk cartridge 326 of taking in dish 100 then, is described.

At first, by difference injection molded formed box upper body 12, box lower body 11, rotatable parts 25, valve 21,22, slip-off preventing parts 34, adopt resin forming.Because rotatable parts 25 and valve 21,22 are movable in disk cartridge 326, the good and abrasion performance material that also the excellent friction coefficient the is little formation of engineering properties of therefore preferred tractive force, bending etc.For example, rotatable parts 25 and valve 21,22 are made of polyacetal (POM).Box upper body 11 and box lower body 12, preferably strong by impacting, coloring excellent material constitutes.For example, box upper body 11, box lower body 12 are made of ABS resin.Box upper body 11 and box lower body 12 are preferably formed by different materials with rotatable parts 25 and valve 21,22.

At first, shown in Figure 192 (a), in the rotation hole 37 ', 38 ' of valve 21,22, insert rotation axis 39 among the medial surface 11u that is arranged on box lower body 11,, on the medial surface 11u of box lower body 11, dispose valve 21,22 in the mode of valve 21,22 one-tenths opened state.Then, shown in Figure 192 (b), the projection 25e and the projection 25f of rotatable parts 25 inserted guiding groove 27e, 28f respectively, thus on valve 21,22 configuration rotatable parts 25.As required, configuration is used to the slide unit 99 that locks the Lock Part 98 of rotatable parts 25 and be used for the kind of differentiation dish.

Shown in Figure 192 (c), with 12 relative box lower body 11 configurations of box upper body.In conjunction with box upper body 12 and box lower body 11 time, use anchor clamps, with loudspeaker and apply ultrasound wave, thereby, engage box upper body 12 and box lower body 11 by ultrasonic wave.By applying ultrasound wave, in the contact portion generation heat of friction of box upper body 12 and box lower body 11, thereby the contact portion fusing realizes engaging.At this moment, because rotatable parts 25 form by being different from valve 21,22 materials, therefore can not melt from melting with box upper body 12 or box lower body 11.Thus, formation is with the box main body 10 of box upper body 12 and box lower body 11.After this, can also carry out dedusting operation or matting, to remove by dust in conjunction with generation.

Then, shown in Figure 193 (a), from the dish peristome 12w insertion dish 100 of box main body 10, dish is taken in and is started working.Then, slip-off preventing parts 34 are installed on the box main body 10.Shown in Figure 193 (a),, fitting pin 34a, 34a ' are separately fixed among mating holes 64c, the 64c ' by fitting pin 34a, 34a ' and register pin 34b, 34b ' are inserted mating holes 64c, 64c ' respectively.As mentioned above, finish at the disk cartridge 326 that coils after 100 of taking in shown in Figure 193 (b).

According to this method, owing to after being engaged by the deposited box of ultrasonic upper body 12 and box lower body 11, take in dish 100, even therefore play dirt by the deposited generation of ultrasonic, dust is also non-cohesive on dish 100, reliability that can raising dish 100.In addition, owing to take in dish 100 after box upper body 10 is finished again, therefore can carry out the manufacturing of box main body 10 and the manufacturing of dish 100 respectively, after finishing respectively, the manufacturing site location of box main body 10 or coil 100 manufacturing site location in different places, in box main body 10, take in dish 100,, can make and take in the disk cartridge 326 ' that coils after 100 by installation slip-off preventing parts 34.Owing in the installation of slip-off preventing parts 34, do not need to make especially machine, therefore will coil 100 operations that are accommodated in the box main body 10, can carry out in place arbitrarily.

(the 27th embodiment)

Below, disk drive device of the present invention is described.

Figure 194 is the stereographic map that schematically shows the major part of disk drive device 900.Disk drive device 900 can load any from the disk cartridge 326 of disk cartridge 301 to the 26th embodiments of the 1st embodiment.In Figure 194, the state of the disk cartridge 326 of the 26th embodiment has been loaded in expression.In addition, dish 100 is illustrated by the broken lines.

Disk drive device 900 has: the driving mechanism 902 that makes dish 100 rotations that are accommodated in the disk cartridge 326; Be used to carry out to coiling 100 recorded informations and/or magnetic head 908 from coiling 100 redisplaying informations.

Driving mechanism 902, the turntable 906 that comprises Spindle Motor 904 and be installed on the rotation axis of Spindle Motor 904, Spindle Motor 904 is supported by pedestal 910.Magnetic head 908, (actuator) moves along guiding piece 912 by not shown driver.

In addition, disk drive device 900 has the clamper (clamper) 916 that is supported by pole (arm) 914.Turntable 906 and clamper 916 comprise for example magnet and magnetic respectively.As described below, by their gravitation, clamping and holding tray 100 between clamper 916 and turntable 906 will be coiled 100 and be fixed on the turntable 906.Thus, the driving force with Spindle Motor 904 passes to dish 100 definitely, and not generation face swing is in addition rotated dish 100.

Disk cartridge 326 has the operating portion 25j that is used to open and close the 1st valve 21 and the 2nd valve 22 on the side 10r parallel with the direction of insertion 1A of disk cartridge 326.Therefore, disk drive device 900, with the approaching zone of the side 10r of the disk cartridge 326 that is loaded into disk drive device 900 in have with operating portion 25j the discharge gate operating mechanism 918 that cooperates, is used to open and close valve.In addition, in Figure 194,, make discharge gate operating mechanism 918 sow discord and represent from operating portion 25j for clear and definite operating portion 25j.In addition, also omitted the driver that discharge gate operating mechanism 918 is moved.

Discharge gate operating mechanism 918 is corresponding with the position of the valve opening and closing operations portion of the disk cartridge that inserts disk drive device 900 and be provided with.For example, as the disk cartridge of the 1st embodiment or the 10th embodiment, under the situation of loading disk cartridge on the side 10p that magnetic head peristome 11h is set with valve opening and closing operations portion, with the approaching zone of side 10p on discharge gate operating mechanism 918 is set.Be loaded under the situation of disk drive device 900 at disk cartridge that will the from the 16th to the 18th embodiment, also can discharge gate operating mechanism 918 be set near side 10q.

In addition, also two above discharge gate operating mechanisms 918 can be arranged in the disk drive device 900.For example, in Figure 194, on the 10p of the side of disk cartridge 326, also discharge gate operating mechanism 918 can be set, thereby make any disk drive device 900 of the disk cartridge 326 of the disk cartridge can load the 1st embodiment and the 23rd embodiment.

Discharge gate operating mechanism 918, have as be arranged at disk cartridge in shape or the structure of action cooperating of operating portion 25j.Owing under the situation of disk cartridge 326, the 1st valve 21 and the 2nd valve 22 are opened and closed, therefore the discharge gate operating mechanism 918 that cooperates, slides on the direction parallel with arrow 1A with operating portion 25j are set by operating portion 25j is slided.Only form operating portion 25j,, have at loading under the situation of disk cartridge of operating portion of gear-like, also can adopt the discharge gate operating mechanism 918 that has gear shape, carries out rotational action perhaps as described in the 16th embodiment by gear.

The pillar 920 of regulation disk cartridge 326 maintained height is set, maintenance disk cartridge 326 on pillar 920 on pedestal 910.In addition, will be arranged at pedestal 910 with the register pin 922 that the pilot hole 11w that is arranged at disk cartridge 326 cooperates.

Pillar 920 and register pin 922, performance are positioned disk cartridge 326 as relative driving mechanism 902 function of the support structure of assigned position and support.Also can on disk drive device 900, be provided as the support (tray) of support structure, replace pillar 920 and register pin 922, promptly, can line timber, placement disk cartridge 326 on support, to coil 100 when inserting disk drive device 900 by taking in support, relatively driving mechanism 902 and magnetic head 908 position that disk cartridge 326 is positioned to stipulate.In addition, also can adopt and with the support structure of support and register pin 922.

Below, the action of disk drive device 900 is described.

At first, the disk cartridge 326 of taking in dish 100 is loaded in the disk drive device 900.The loading of disk cartridge 326 also can manually be carried out by the operator, also can be by not shown loader mechanism, with disk cartridge 326 from the disk cartridge patchhole conveyance of disk drive device 900 to the position shown in Figure 194.In this case, also can be for example in Figure 194 with the position shown in the arrow 926, the loader mechanism of the recess 10e that the recess 10c that illustrated in the 1st embodiment etc. or the 16th embodiment are set is cooperated with recess 10c or recess 10e.In addition, also can adopt aforesaid support.By any method, disk drive device 326 is positioned the assigned position of relative driving mechanism 902 and magnetic head 908.

In addition, also can be in the arrow 928 or the part shown in the arrow 930 of disk cartridge 326, the recess 10g that illustrated in the 1st embodiment or the 10b of crack portion of the 16th embodiment are set, the protuberance (not shown) that cooperates with recess 10g or the 10b of crack portion is set in disk drive device 900.According to above-mentioned, if with disk cartridge 326 up and down or front and back oppositely insert disk drive device 900, then can not normally insert with interfering with each other.Can prevent from thus to misplug into.

If disk cartridge 326 is loaded on the position shown in Figure 194, discharge gate operating mechanism 918 cooperates with operating portion 25j so, makes operating portion 25j and arrow 1A reverse slide.Along with this action, the 1st valve 21 and the 2nd valve 22 beginning opening operations, open magnetic head peristome 11h and chucking peristome 11c.In addition, described in the 20th embodiment, be situated between by the 1st valve 21 and the 2nd valve 22, discharge gate operating mechanism 918 removes the maintenance action of dish 100 at dish maintaining part 21b, 22a, 22b.Therefore, will coil 100 from dish maintaining part 21b, 22a, 22b liberation.Then, keep the pole 914 of clamper 916 to descend, will coil 100 and remain between clamper 916 and the turntable 906.Thus, dish 100 is in the incorporating section of disk cartridge 326, and rotating mode is maintained on the turntable 906.

By Spindle Motor 904, dish 100 rotates.And, the information recording area of magnetic head 908 accesses disk 100, recorded information on dish 100 is reappeared the information that is recorded in dish 100 in addition.

Disk cartridge 326 is being got rid of under the situation of (unloading) from disk drive device 900, pole 914 is risen, clamper 916 is broken away from from coiling 100.Then, discharge gate operating mechanism 918 is moved along the direction of arrow 1A, operating portion 25j is slided.Along with this action, the 1st valve 21 and the 2nd valve 22 obturations.When the 1st valve 21 and the 2nd valve 22 obturations, the dish maintaining part is controlled dish 100, if the 1st valve 21 and the 2nd valve 22 entirely shut, coils maintaining part holding tray 100 so.Though after this not shown, by feel trim actuator disk cartridge 326 is got rid of from disk drive device 900.

Also have, in Figure 194, disk drive device 900 flatly keeps disk cartridge 326.But, as having illustrated in the 1st embodiment or the 8th embodiment, the mode that vertically keeps disk cartridge also can be installed constitute disk drive device 900.Even disk cartridge vertically is loaded under the situation in the disk drive device 900, also can prevents to coil 100 and come off from accommodation section in disc by the slip-off preventing parts.

In above-mentioned the 1st to the 19th embodiment, although understand by ultrasonic etc. nonwoven fabrics be bonded at mode on the valve, but have at dish under the situation of the structure that is difficult to adhere to scar at the hard dura mater (hardcoat) that forms on the signal recording surface of dish, may not need nonwoven fabrics, also can be on dish with the direct face contact of valve.In addition, comprehensive needs of dish contacts with the signal recording surface face of dish, and valve also can have the structure of at least a portion with the signal recording surface of dish contacts as valve.That is, but also not with valve comprehensively, and the structure that contacts with a part of face.The structure of the nonwoven fabrics that prevents to adhere to scar etc. also can be set in the part of this face contact in addition.

In above-mentioned the 1st to the 27th embodiment, the dish 100 that is accommodated in disk cartridge only single face has information recording surface.It is not limited to disk cartridge of the present invention has the single face that makes dish and is exposed to outside structure, as an illustration of the dish that is suitable for this structure most only single face have the dish of signal recording surface.For example,, suitably be accommodated in disk cartridge of the present invention, be loaded into the dish device, can write down or reproducing signal even the two sides has the dish of signal recording surface.But the dish that the two sides is had signal recording surface is accommodated in disk cartridge of the present invention, carries out under the situation of keeping, because therefore the possibility of the information recording surface that exists dust to be attached to have exposed preferably is provided with inadhering any mechanism of dust.

In addition, in above-mentioned the 1st to the 27th embodiment, though do not describe coiling 100 size especially, the present invention can be used as the disk cartridge of dish of the various sizes such as dish of the dish of taking in 12cm or other sizes, implements.

Also have, in above-mentioned the 1st to the 27th embodiment, though it is only bigger than dish to illustrate the profile of disk cartridge, the size between dish and the disk cartridge is not limited to the relation shown in the figure.For example, the profile of disk cartridge is greatly to the travelling expenses degree that can take in 12cm, but is arranged at size and structure that the accommodation section in disc of disk cartridge or dish maintaining part also are suitable for taking in the dish of 8cm.This disk cartridge is for example used in the record/reproduction device at the dish of 12cm, also can bring into play as the function that is used for the dish of 8cm is carried out the adapter (adapter) of recording.

Illustrated feature in each of above-mentioned the 1st to the 27th embodiment can suitably make up enforcement.For example, also the rotatable parts that illustrated in the 19th embodiment can be arranged in the disk cartridge of the 16th embodiment.Also have, the various recesses that also being used for of having illustrated in the 15th embodiment can be collected dust are arranged on the disk cartridge of the 16th embodiment.As mentioned above, because the mode of the combination of above-mentioned the 1st to the 27th embodiment can variously make up, therefore can not exemplify the combination of all possible embodiment.But the technician of the industry can implement the combination of above-mentioned various possible embodiment based on instructions of the present invention, and the combination of this various possible embodiment is also included within the scope of the present invention.

(industrial utilizability)

Disk cartridge of the present invention is particularly suitable for the dish that single face only has recording surface. By making the box main body tool The signal recording surface of covering disk and the structure that single face is exposed are only arranged, can make the less thick of box. In addition, Have the one-sided shape that only covers disk cartridge by valve, the simplification that can seek to construct can make work The cost of door. In addition, because dish maintaining part or dish holding member are pressed in valve or box master with dish On the body and keep, can prevent that therefore dish from rocking in box main body, can prevent that also dust etc. is to dish Signal recording surface adheres to. In addition, by utilizing the dish that exposes at the dish peristome to indicate face, design Become good.

Therefore, according to the present invention, provide a kind of slim, dust tightness is high, excellent in design, can be various The disk cartridge that uses in the drive unit.

Claims (9)

1, a kind of disk cartridge is characterized in that,

Have:

Box main body comprises: accommodation section in disc, and it has dish peristome and bottom, according to having under the 1st and the 2nd the state of dish rotatable, and makes described the 1st face be exposed to outside mode from described dish peristome to take in; The chucking peristome, it is set at the bottom of described accommodation section in disc in order to tighten described dish from the outside; With the magnetic head peristome, it visits the 2nd of described dish for the magnetic head that makes the record that carries out signal and/or reproduction, is set at the bottom of described accommodation section in disc,

The the 1st and the 2nd valve, it is set on the bottom of described accommodation section in disc, is used for the open or inaccessible described magnetic head peristome to the outside,

The the 1st and the 2nd dish maintaining part that in the described the 1st and the 2nd valve, is provided with respectively, and

Rotatable parts, it is maintained on the described the 1st and the 2nd interior valve of described accommodation section in disc, and can carry out the mode that the described the 1st and the 2nd valve carries out on-off action by rotating in described accommodation section in disc, cooperates with the described the 1st and the 2nd valve,

Wherein,

Described rotatable parts comprise:

The dish receiving portion, and this dish receiving portion has: contact area, when it is in blocked state at the described the 1st and the 2nd valve, contact with the 2nd outer peripheral edges portion of described dish, accept described dish; Groove, it is arranged at the outside of described contact area;

A plurality of Embedded Divisions, its mode with the part of the described groove of landfill is provided with, and has above the inclination at the central side of described dish peristome;

Otch, it is arranged on the dish receiving portion to be in the mode that is positioned at described magnetic head peristome under the opened state at the described the 1st and the 2nd valve,

The the described the 1st and the 2nd dish maintaining part, when being in inaccessible state at the described the 1st and the 2nd valve, the zone that otch was arranged at described rotatable parts, the lateral surface of described dish is docked at the mode on the sidewall of described accommodation section in disc, with the off-centring of the described relatively dish maintaining part in center of described dish and keep described dish.

2, disk cartridge according to claim 1 is characterized in that,

The groove of described dish receiving portion, the described the 1st and the state of the 2nd valve obturation under, expose at described accommodation section in disc.

3, disk cartridge according to claim 1 is characterized in that,

The Zhou Fangxiang length of described Embedded Division is more than the 1mm.

4, disk cartridge according to claim 2 is characterized in that,

The Zhou Fangxiang length of described Embedded Division is more than the 2mm and below the 5mm.

5, disk cartridge according to claim 1 is characterized in that,

Also have:

The slip-off preventing parts, it is outstanding in described dish peristome,

Wherein,

When the described the 1st and the 2nd valve was inaccessible, described the 1st dish maintaining part contacted with described dish near described slip-off preventing parts before the described the 2nd coils maintaining part and described dish contacts,

Described the 1st dish maintaining part has: with near the described slip-off preventing parts with after described dish contact, make the described the 2nd to coil maintaining part and the mode that described dish contacts, controls, change the degree of tilt of the interior dish of described accommodation section in disc and the structure of position.

6, disk cartridge according to claim 5 is characterized in that,

At least a portion of described the 1st dish maintaining part when the described the 1st and the 2nd valve is inaccessible, is positioned at the below of described slip-off preventing parts, contacts with described slip-off preventing parts.

7, the disk cartridge of stating according to claim 6 is characterized in that,

The the described the 1st and the 2nd dish maintaining part comprises the inclined-plane of inverted cone shape respectively, is docked at the rib of the periphery of described dish by making described inclined-plane, controls and fixing described dish, and described dish is pushed and kept to the bottom side of described accommodation section in disc.

8, disk cartridge according to claim 5 is characterized in that,

Change the degree of tilt of described the 1st dish maintaining part and the structure of position, comprising: the 1st restriction face, it is not parallel relative to the direction that described the 1st dish maintaining part moves with when the described the 1st and the 2nd valve is inaccessible, and the mode of the contrary taper of formation is configured; With the 2nd restriction face, itself and the described the 1st or the 2nd valve configured in parallel.

9, disk cartridge according to claim 1 is characterized in that,

The the described the 1st and the 2nd dish maintaining part has respectively: the 1st and the 2nd inclined-plane, and it is configured on the direction with the described bottom vertical of accommodation section in disc, tilts in the mode towards described bottom; And surface level, it is set between the 1st and the 2nd inclined-plane, and is parallel with described bottom, according to the mode that when keeping described dish, can tilt towards radial direction with described 1 and 2 valve be connected,

According to when the described the 1st and the 2nd valve is in blocked state, prevent the oblique mode of the described the 1st and the 2nd dish maintaining part inclination outwardly with described 1 and 2 stoppers that coil the maintaining part butts be arranged on the described rotatable parts.

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