JP2004118961A - Ejection mechanism, and disk recording and/or playback device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the load to be applied onto a disk cartridge inserted into a holder. <P>SOLUTION: A disk recording and/or playback device is provided with: a holder 6 movable between a loading position and a pulling-out position and having a lock part 21; a supported part 24 supported to be freely slid in inserting and ejecting directions with respect to the holder of a disk cartridge 100; an operation part 26 pressed to the disk cartridge during the insertion of the disk cartridge into the holder and pressing the same during the ejection of the disk cartridge from the holder; and an elastic deformation part 25 elastically deformed with respect to the supported part. A locked part 25b to be locked to a lock part is provided with an eject lever 23 disposed in the elastic deformation part, a pressing spring 28 for pressing the eject lever in the ejection direction, and a lock releasing means 29 for releasing the locking of the locked part. The eject lever is provided with a cam slide contact part 24b. The lock releasing means is provided with a cam part 29a with which the cam slide contact part is brought into slide contact when the holder is moved toward a loading position to move the eject lever in the insertion direction. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an eject mechanism and a disc recording and / or reproducing apparatus. More specifically, the present invention relates to a technical field for reducing a load on a disk cartridge inserted into a holder.
[0002]
[Prior art]
There is a disk recording and / or reproducing device capable of recording an information signal or reproducing a recorded signal or both recording and reproducing on a disk-shaped recording medium. Some use a disk cartridge in which, for example, a disk-shaped recording medium having a diameter of about 64 mm is rotatably housed inside a case body.
[0003]
In the disk recording and / or reproducing apparatus using the disk cartridge as described above, an ejection mechanism for ejecting the disk cartridge held in the holder when recording or reproduction of the information signal is completed is provided. ing.
[0004]
16 to 19 schematically show an example of an ejection mechanism in a disk cartridge and a conventional disk recording and / or reproducing apparatus.
[0005]
In the following description, when the direction is indicated, the direction in which the disk cartridge is inserted into the holder will be referred to as the rear, and the direction in which the disk cartridge is removed from the holder will be referred to as the front. Therefore, the direction in which the disk cartridge is inserted into and removed from the holder is described as the front-back direction. Further, the left and right sides are described in directions in a state where a user faces an insertion opening of a holder into which a disc cartridge is inserted.
[0006]
The disk cartridge x is formed by rotatably storing a disk-shaped recording medium (not shown) in a case body y. Positioning holes z1 and z2 are formed on the lower surface of the case body y so as to be separated from each other back and forth (see FIG. 16).
[0007]
The disk recording and / or reproducing apparatus has required members and mechanisms arranged in an outer casing, and a mechanical chassis provided with a disc table (not shown) and an optical pickup functioning as a recording / reproducing unit in the outer casing. a is arranged (see FIG. 16).
[0008]
The mechanical chassis a is provided with positioning pins b and c protruding upward at its front end and rear end, respectively. The positioning pins b and c are for positioning the disk cartridge x mounted on the disk table with respect to the mechanical chassis a, and are respectively inserted into positioning holes z1 and z2 formed in the case body y of the disk cartridge x. .
[0009]
A holder d is rotatably supported on the mechanical chassis a with its rear end as a fulcrum, and an eject lever f is slidably supported in a right-and-left side e of the holder d in a substantially front-rear direction (FIG. 16 and FIG. 17).
[0010]
The right side surface e of the holder d is provided with a spring hook projection g and a lock portion h that are separated from each other in the front and rear directions.
[0011]
The eject lever f has a supported portion i that is long in the front-rear direction, an elastic deformation portion j that is long in the front-rear direction and is continuous with the supported portion i, and an action portion that protrudes leftward from the rear end of the supported portion i k and a protruding portion l protruding downward from the front end of the elastically deforming portion j are integrally formed.
[0012]
The elastically deformable portion j can be elastically deformed substantially vertically with respect to the supported portion i. A spring hook m is provided at the front end of the elastically deforming portion j, and a locked portion n is formed immediately behind the spring hook m.
[0013]
An engagement protrusion o protruding outward is provided at the lower end of the protrusion l.
[0014]
An urging spring (tensile coil spring) p is stretched between the spring hook g of the holder d and the spring hook m of the eject lever f, and the eject lever f is urged forward by the urging spring p. ing.
[0015]
An unlocking member q is disposed on the outer side of the right side surface e of the holder d. The unlocking member q has a base r extending vertically and an engaging part s protruding forward from an upper end of the base r.
[0016]
In a state before the disc cartridge x is inserted into the holder d, the holder d is opened at a predetermined angle so that the front end is located above the mechanical chassis a, and the eject lever f is moved by the biasing spring p. It is located at the front end in the movement range by the urging force (see FIG. 16).
[0017]
When the disc cartridge x is inserted into the holder d from the front, the operating portion k of the eject lever f is pressed by the disc cartridge x, and the eject lever f is moved backward against the urging force of the urging spring p. Then, the locked portion n of the eject lever f is engaged with the lock portion h of the holder d, and the eject lever f is locked to the holder d at the rear end in the movement range (see FIG. 18).
[0018]
When the holder d into which the disk cartridge x is inserted is rotated in the direction approaching the mechanical chassis a, the positioning pins b and c of the mechanical chassis a are inserted into the positioning holes z1 and z2 formed in the case y of the disk cartridge x. As each is inserted, the disk cartridge x is positioned with respect to the mechanical chassis a (see FIG. 19). At this time, the projection l of the eject lever f is moved downward through the inside of the lock release member q.
[0019]
By rotating the holder d in the direction approaching the mechanical chassis a, the disk-shaped recording medium of the disk cartridge x is mounted on the disk table arranged on the mechanical chassis a. When the disk-shaped recording medium is mounted on the disk table, the disk-shaped recording medium is rotated with the rotation of the disk table, and information signals are recorded or reproduced on the disk-shaped recording medium by driving an optical pickup or the like. .
[0020]
When the recording or reproduction of the information signal on the disc-shaped recording medium is completed and the holder d is rotated in a direction away from the mechanical chassis a, the engaging protrusion o provided on the protrusion l of the eject lever f is locked. The engagement member s of the release member q is engaged from below. When the engaging protrusion o is engaged with the engaging portion s, the movement of the elastically deformable portion j is restricted, so that the elastically deformable portion j moves downward with respect to the supported portion i with the rotation of the holder d. The engagement between the locked portion n of the eject lever f and the lock portion h of the holder d is released, and the eject lever f is moved forward by the urging force of the urging spring p.
[0021]
By the forward movement of the eject lever f, the disc cartridge x is pressed forward by the action portion k, a part of the disc cartridge x is ejected from the holder d, and the eject operation is completed.
[0022]
[Problems to be solved by the invention]
By the way, the holder d into which the disk cartridge x is inserted is formed to have a width in the left-right direction and a width in the up-down direction slightly larger than those of the disk cartridge x in order to ensure good insertability of the disk cartridge x. Therefore, when the disc cartridge x is inserted into the holder d, the disc cartridge x may be inserted in a state inclined with respect to the holder d.
[0023]
For example, as shown in FIG. 20, when the disc cartridge x is inserted in a state where the rear end on the right side of the disc cartridge x is inclined to the right side from the front end on the right side, the left end L on the rear surface of the disc cartridge x is The disc can be inserted up to the position where it abuts against the rear wall t located inside the disc recording and / or reproducing apparatus. Even when the left end L abuts against the wall t, the eject lever f can be held by the holder d. Must be locked.
[0024]
Therefore, in the disc recording and / or reproducing apparatus, when the left end L is in contact with the wall surface t, the locked portion n of the eject lever f is engaged with the lock portion h of the holder d. The position of the lock portion h and the position of the locked portion n are set.
[0025]
However, as described above, since the position at which the eject lever f is locked to the holder d is set based on the state where the left end L abuts on the wall surface t, the conventional disk recording and / or reproducing apparatus has In the state in which the disk cartridge x is inserted into the holder d, the disk cartridge x is positioned slightly forward from the position where the disk-shaped recording medium is mounted on the disk table.
[0026]
Therefore, when the holder d into which the disk cartridge x is inserted is rotated in a direction approaching the mechanical chassis a, and the positioning pins b and c of the mechanical chassis a are inserted into the positioning holes z1 and z2 of the disk cartridge x, The positioning pins b and c may rub against the inner surfaces of the positioning holes z1 and z2, and the case y and the positioning pins b and c of the disk cartridge x may be damaged or scraped.
[0027]
Even when the disc-shaped recording medium is mounted on the disc table, the urging force of the urging spring p is applied to the disc cartridge x via the action portion k of the eject lever f. An unnecessary load is applied to the mechanical chassis a through the interface.
[0028]
Thus, an object of the present invention is to reduce the load on a disk cartridge inserted into a holder.
[0029]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the eject mechanism and the disc recording and / or reproducing apparatus of the present invention provide a mounting position where a disk-shaped recording medium is mounted on a disk table and an insertion / removal position where a disk cartridge is inserted or ejected. , A holder having a lock portion, a supported portion slidably supported in the insertion direction and the ejection direction of the disc cartridge with respect to the holder, and a disc cartridge when the disc cartridge is inserted into the holder. The disc cartridge is inserted into the holder at the insertion / removal position, and has an action portion that presses the disc cartridge when ejected from the holder of the disc cartridge and an elastic deformation portion that can be elastically deformed with respect to the supported portion. Locked part that is locked to the lock part of the holder when it is An ejecting lever provided on the shaping portion, an urging spring for urging the ejecting lever in the discharging direction, and an elastically deforming portion of the ejecting lever when the holder is moved from the mounting position to the insertion / removal position. Unlocking means for deforming and unlocking the locked portion with respect to the locking portion, a cam sliding contact portion provided on the eject lever, and the lock releasing means allowing the holder to move from the insertion / removal position to the mounting position. A cam portion is provided for moving the eject lever in the insertion direction by sliding the cam sliding portion when the cam lever is moved.
[0030]
Therefore, in the eject mechanism and the disk recording and / or reproducing apparatus of the present invention, as the holder is moved from the insertion / removal position to the mounting position, the load on the disk cartridge by the urging spring is reduced.
[0031]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the embodiment described below, a disk cartridge in which a disk-shaped recording medium having a diameter of about 64 mm is rotatably stored in a case body is used, and recording and reproduction of information signals to and from the disk-shaped recording medium are performed. It is applied to a disc recording and / or reproducing apparatus that can perform the recording.
[0032]
The disk recording and / or reproducing apparatus 1 includes required members and respective mechanisms arranged in an outer casing 2. The outer casing 2 includes a thin box-shaped main body case 3 opened upward, and a main body 3. A cover 4 is rotatably supported by the case 3 with the rear end as a fulcrum, and opens and closes an opening surface of the main body case 3 (see FIGS. 1 and 2).
[0033]
A mechanical chassis 5 is disposed in the main body case 3 of the outer housing 2 (see FIGS. 2 and 3). A holder 6 is rotatably supported on the mechanical chassis 5 with the rear end as a fulcrum. When the cover body 4 is rotated with respect to the main body case 3, the holder 6 holds a disk cartridge described below having a disk-shaped recording medium and mounts the disk-shaped recording medium on a disk table described later. And an insertion / removal position where a disk cartridge is inserted or ejected.
[0034]
An open knob 3a for rotating the cover body 4 from the closed position to the open position to open the opening surface of the main body case 3, a connector 3b for connecting various devices, 3b,... Are provided.
[0035]
The open knob 3a is linked to a lock piece 7 located along the front surface of the main body case 3. When the open knob 3a is slid rightward, that is, in the direction of the arrow shown in FIG. Moved toward.
[0036]
The cover 4 is provided with operation buttons 4a, 4a,... For changing the volume, starting a reproduction operation, and the like.
[0037]
A lock member 8 is attached to the inner surface of the front end of the cover body 4 (see FIG. 2), and the cover body 4 closes the main body case 3 when the lock piece 7 is engaged with the lock member 8. It is locked in the closed position (see FIG. 1).
[0038]
When the open knob 3a is slid rightward, the lock piece 7 is disengaged from the lock member 8, and the cover body 4 is rotated by a predetermined angle by the action of a spring member (not shown). Then, the opening position of the main body case 3 is opened to the opening position (see FIG. 2). At this time, the holder 6 reaches the insertion / removal position.
[0039]
When the cover body 4 is rotated from the open position shown in FIG. 2 in a direction to close the opening surface of the case body 3, the lock pieces 7 are engaged with the lock members 8 and the cover body 4 is locked at the closed position. (See FIG. 1). At this time, the holder 6 reaches the mounting position.
[0040]
A spindle motor (not shown) is arranged at the center on the lower surface side of the mechanical chassis 5, and a disk table 9 is fixed to the upper end of the motor shaft of the spindle motor (see FIG. 3).
[0041]
An opening 5a is formed in the mechanical chassis 5 from a portion where the disc table 9 is disposed to a right edge, and a disc-shaped recording medium in which an optical pickup (recording / reproducing unit) 10 is mounted on the disc table 9 is provided in the opening 5a. (See FIG. 3). The optical pickup 10 includes a moving base 10a and an objective lens driving device 10b supported thereon.
[0042]
The mechanical chassis 5 is provided with a positioning pin 5b protruding upward at the right end of the front end and a positioning pin 5c protruding upward at the right end of the rear end (FIGS. 2 and 3). reference). The positioning pins 5b and 5c are formed in a tapered shape, and the height of the positioning pin 5c is lower than that of the positioning pin 5b.
[0043]
The holder 6 is formed by bending a plate-like material into a predetermined shape, and has a top plate portion 11, side portions 12, 13 vertically suspended from left and right side edges of the top plate portion 11, and a side portion 12. , 13 projecting toward the mutually approaching direction from the lower edges, respectively, and the opening at the front end is formed as an insertion port 6a (see FIGS. 4 and 5).
[0044]
First spring portions 15, 15 are provided on the top plate portion 11 of the holder 6 so as to be separated from each other left and right (only one of them is shown in FIGS. 4 and 5). The first spring portions 15, 15 are formed in a cut-and-raised shape such that the distal end portion is located above the base end portion.
[0045]
The first spring portions 15, 15 are elastically contacted with the lower surface of the cover body 4, and when the cover body 4 reaches the open position, have the function of holding the holder 6 slightly away from the cover body 4 and at the insertion / removal position. . When the holder 6 is held at the insertion / removal position, the holder 6 is positioned at a slight distance from the cover body 4 by the spring portions 15, so that the disk cartridge is covered when the disk cartridge is inserted into and removed from the holder 6. It does not interfere with the front end of the body 4. Further, when the cover body 4 is held at the closed position, the first spring portions 15 and 15 are elastically contacted with the lower surface of the cover body 4, so that the holder 6 is pressed against the mechanical chassis 5 to move to the mounting position. Will be retained.
[0046]
Second spring portions 16, 16 are provided on the top plate portion 11 of the holder 6 so as to be separated to the left and right (only one of them is shown in FIGS. 4 and 5). The second spring portions 16, 16 are formed in a cut-and-raised shape such that the distal end portion is located below the base end portion.
[0047]
The second spring portions 16 are elastically contacted with the upper surface of the disk cartridge inserted into the holder 6 and have a function of pressing the disk cartridge against the receiving plate portions 14 in the holder 6. When the disc cartridge is inserted into the holder 6, the disc cartridge is pressed by the second spring portions 16, 16, so that the disc cartridge held by the holder 6 can be prevented from rattling.
[0048]
At the upper edges of the side portions 12, 13 of the holder 6 near the front end, hook pieces 17, 17 project outward, respectively (only one of them is shown in FIGS. 4 and 5). The hook pieces 17 are respectively hooked on a pair of hook portions (not shown) provided on the cover body 4. That is, from the state where the holder 6 is in the mounting position and the cover body 4 is in the closed position, when the cover body 4 is turned toward the open position by a predetermined amount by the action of the above-described spring member, the cover body 4 is closed. The hooking portions hook the hook pieces 17 of the holder 6, respectively, and as the cover body 4 is further turned toward the open position, the holder 6 is turned toward the insertion / removal position.
[0049]
On the side surface portion 13 of the holder 6, a spring hooking projection 18 is provided in a cut-and-raised shape immediately behind the hooking piece 17 (see FIGS. 4 and 5). A shutter opening / closing spring 19 is provided on the side surface portion 13 by cutting and raising a part of the side surface portion 13 immediately below the hooking piece 17 and the spring hooking projection 18. An unlocking piece 20 protruding inward is provided at a substantially central portion in the front-rear direction of the side surface portion 13.
[0050]
A lock portion 21 is provided on the side surface portion 13 immediately behind the unlocking piece 20 (see FIGS. 4 and 5). The lock portion 21 includes an engaging portion 21a protruding rightward and a pressing portion 21b protruding downward from the distal end edge of the engaging portion 21a.
[0051]
A support pin 22 protruding rightward is provided on the rear side of the unlocking piece 20 (see FIGS. 4 and 5).
[0052]
An insertion hole 13a is formed in the rear end portion of the side surface portion 13 (see FIGS. 4 and 5).
[0053]
An eject lever 23 is slidably supported in the front-rear direction on the side surface portion 13 (see FIGS. 4 and 5). The eject lever 23 includes a supported portion 24 that is long in the front-rear direction, an elastic deformation portion 25 that is continuous with the supported portion 24 and that is long in the front-rear direction, and an action portion that protrudes leftward from the rear end of the supported portion 24. 26 and a protruding portion 27 protruding downward from the front end of the elastic deformation portion 25 are integrally formed.
[0054]
The supported portion 24 has a supported hole 24a that is long in the front-rear direction. At the front edge of the supported portion 24, a cam sliding contact portion 24b protruding rightward is provided.
[0055]
The elastically deformable portion 25 is capable of being elastically deformed substantially vertically with respect to the supported portion 24, is provided with a spring hook 25 a protruding rightward at a front end thereof, and is opened forward and upward at the rear side. A notched locked portion 25b is formed.
[0056]
At the lower end of the protruding portion 27, an engaging protruding portion 27a protruding rightward is provided.
[0057]
The eject lever 23 is slidably supported in the front-rear direction by the side surface portion 13 by inserting the support pin 22 of the holder 6 into the supported hole 24a. In a state in which the eject lever 23 is supported by the side surface portion 13, the action portion 26 is inserted through the insertion hole 13 a and is located in the holder 6, and a part of the elastic deformation portion 25 is located inside the holding portion 21 b of the lock portion 21. Is located.
[0058]
An urging spring 28 is stretched between the spring hook 25a of the eject lever 23 and the spring hook projection 18 of the side surface 13, and the eject lever 23 is urged forward by the urging spring 28.
[0059]
Since the spring hook projection 18 is located slightly above the spring hook 25a, the biasing spring 28 is stretched so that the front end is located slightly above the rear end. Therefore, the eject lever 23 is urged forward by the urging spring 28 and also urged in the direction in which the front end moves upward.
[0060]
An unlocking means 29 is disposed immediately to the right of the side surface portion 13 of the holder 6 (see FIGS. 4 and 5). The lock releasing means 29 has a base 30 extending vertically and an engaging portion 31 protruding forward from the upper end of the base 30, and faces upward obliquely rearward to a continuous portion of the base 30 and the engaging portion 31. A cam portion 29a that is inclined forward is formed. The rear edge of the base 30 is formed as a holding portion 30a, and its upper end is connected to the cam portion 29a. The engaging portion 31 is provided with a guide piece 31a projecting obliquely upward and rightward from the upper edge thereof.
[0061]
The disk cartridge 100 includes a disk-shaped recording medium 102 rotatably housed in a rectangular flat box-shaped case body 101 (see FIG. 2). A central hole (not shown) is formed at the center of the lower surface of the case body 101, and a transmission hole (not shown) is formed on the side of the central hole.
[0062]
A shutter 103 for opening and closing the transmission hole is slidably supported on the case body 101. A groove 101a extending in the front-rear direction is formed on the side surface of the case body 101 on the side where the shutter 103 is supported. On the lower surface of the case body 101, positioning holes 101b and 101c are formed at its front end and rear end, respectively.
[0063]
An engagement hole 103a is formed in a side surface of the shutter 103. The shutter 103 is locked by a lock mechanism (not shown) provided in the case body 101 with the transmission hole closed.
[0064]
Hereinafter, the operation of the disc recording and / or reproducing apparatus 1 will be described.
[0065]
The state shown in FIG. 1 is a state in which the cover body 4 is locked and is in the closed position and the opening surface of the main body case 3 is closed. In this state, recording and reproduction of information signals on the disk-shaped recording medium 102 are performed. In addition, this state is also at the time of stopping immediately after the end of recording or reproduction.
[0066]
When the open knob 3a is operated rightward from the state shown in FIG. 1 at the time of stoppage, the lock of the cover body 4 is released as described above. 6 can be held in the insertion / removal position shown in FIG. At this time, the eject lever 23 is located at the front end in the movement range (see FIG. 6).
[0067]
At the insertion / removal position, the disc cartridge 100 is inserted into the holder 6. As the disk cartridge 100 is inserted into the holder 6, the unlocking piece 20 provided on the side surface portion 13 of the holder 6 is relatively moved forward in the groove 101a of the disk cartridge 100, and the shutter 103 is locked. It is released. Subsequently, when the unlocking piece 20 presses one end edge of the shutter 103 forward, the shutter 103 is opened. At this time, the side surface of the disc cartridge 100 is slidably contacted with the shutter opening / closing spring 19, and thereafter, the shutter opening / closing spring 19 is engaged with the engagement hole 103a.
[0068]
As described above, when the disk cartridge 100 is inserted into the holder 6, the shutter 103 is unlocked and the shutter opening / closing spring 19 is engaged with the engagement hole 103a. , The shutter 103 is slid and the transmission hole is opened. At this time, the disc cartridge 100 is brought into contact with the action portion 26 of the eject lever 23 (see FIG. 6), and the disc cartridge 100 is further inserted into the holder 6, whereby the action portion 26 is pressed backward by the disc cartridge 100. The eject lever 23 is moved rearward against the urging force of the urging spring 28.
[0069]
When the eject lever 23 is moved to a position near the rear end in the movement range by inserting the disc cartridge 100 into the holder 6, the rear edge of the engaging portion 21 a of the lock portion 21 is moved to the locked portion 25 b of the eject lever 23. It is located correspondingly (see FIG. 7). At this time, as described above, the eject lever 23 is also urged by the urging spring 28 in the direction in which the front end is moved upward, so that the eject lever 23 is slightly displaced upward and The locked portion 25b is engaged, and the eject lever 23 is locked by the holder 6.
[0070]
Next, when the cover body 4 is rotated in a direction approaching the main body case 3 and the opening surface of the main body case 3 is closed, the holder 6 is also rotated with the rotation of the cover body 4 and the eject lever 23 is rotated. Is moved substantially downward. When the eject lever 23 is moved substantially downward, the cam sliding portion 24b comes into contact with the cam portion 29a of the unlocking means 29 (see FIGS. 8 and 9). At this time, the projecting portion 27 of the eject lever 23 is moved downward through the inside of the unlocking means 29 with the engaging projection 27a guided by the guide piece 31a of the unlocking means 29.
[0071]
When the holder 6 is further rotated and the eject lever 23 is moved substantially downward, the cam sliding portion 24b is brought into sliding contact with the cam portion 29a, and the eject lever 23 is moved rearward with respect to the holder 6. (See FIGS. 10 and 11). At this time, the locked portion 25b of the eject lever 23 is separated rearward from the lock portion 21 of the holder 6, so that the lock of the eject lever 23 to the holder 6 is released.
[0072]
When the eject lever 23 is moved rearward with respect to the holder 6, the action portion 26 of the eject lever 23 is separated rearward from the disk cartridge 100. Therefore, no load is applied to the disc cartridge 100 by the urging spring 28 via the action portion 26.
[0073]
At this time, the positioning pins 5b and 5c of the mechanical chassis 5 are inserted into the positioning holes 101b and 101c formed in the case body 101 of the disk cartridge 100, respectively. When the positioning pins 5b, 5c are inserted into the positioning holes 101b, 101c, respectively, as described above, no load is applied to the disk cartridge 100 by the urging spring 28, so that the disk cartridge 100 is The positioning pins 5b and 5c are smoothly inserted into the positioning holes 101b and 101c.
[0074]
When the holder 6 is further rotated and the eject lever 23 is moved substantially downward, the cam sliding contact portion 24b is engaged from the cam portion 29a to the holding portion 30a of the base 30, and the eject lever 23 is moved rearward relative to the holder 6. Is stopped (see FIGS. 12 and 13). By engaging the cam sliding contact portion 24b with the holding portion 30a, the eject lever 23 is held by the unlocking means 29 at the moving end on the rear side in the moving range.
[0075]
As described above, since the lock release means 29 is provided with the holding portion 30a which is held when the eject lever 23 is moved rearward, the operation can be optimized without increasing the number of parts and the manufacturing cost. Can be planned.
[0076]
In a state where the eject lever 23 is held by the unlocking means 29, the positioning pins 5b and 5c are inserted into the positioning holes 101b and 101c of the disk cartridge 100, respectively, and the positioning is completed, and the cover body 4 is in the closed position. The end holder 6 has reached the mounting position. When the holder 6 reaches the mounting position, the disk cartridge 100 is mounted on the disk table 9 in which the disk-shaped recording medium 102 is inserted through the center hole on the lower surface of the case body 101.
[0077]
When the disk-shaped recording medium 102 is mounted on the disk table 9, the disk-shaped recording medium 102 is rotated with the rotation of the disk table 9, and is driven by the optical pickup 10 through the transmission hole on the lower surface of the case body 101. The recording surface of the disc-shaped recording medium 102 is irradiated with a laser beam to reproduce, for example, an information signal.
[0078]
When the reproduction of the information signal from the disk-shaped recording medium 102 is completed, the cover body 4 is rotated in a direction to open the opening surface of the main body case 3 and the holder 6 is rotated in a direction away from the mechanical chassis 5, and the ejection is performed. The lever 23 is moved substantially upward. At this time, the positioning pins 5b and 5c are pulled out from the positioning holes 101b and 101c of the disk cartridge 100, respectively.
[0079]
When the holder 6 is rotated in a direction away from the mechanical chassis 5, the cam sliding contact portion 24 b of the eject lever 23 slides on the cam portion 29 a via the holding portion 30 a of the base 30 of the unlocking means 29. The eject lever 23 is moved forward and the locked portion 25b is again engaged with the lock portion 21 of the holder 6 and locked (see FIG. 14).
[0080]
At this time, the engagement protrusion 27a provided on the protrusion 27 of the eject lever 23 is engaged with the lower edge of the engagement portion 31 of the lock release means 29, and the movement of the elastic deformation portion 25 is restricted. Accordingly, when the holder 6 is further rotated in a direction away from the mechanical chassis 5, the elastically deformable portion 25 is deformed downward with respect to the supported portion 24 with the rotation of the holder 6 (see FIG. 15). The engagement between the locked portion 25b of the eject lever 23 and the lock portion 21 of the holder 6 is released, and the eject lever 23 is moved forward by the urging force of the urging spring 28.
[0081]
By the forward movement of the eject lever 23, the disc cartridge 100 is pressed forward by the action section 26, a part of the disc cartridge 100 is ejected from the holder 6, and the eject operation is completed.
[0082]
The user can take out the disc cartridge 100 from the holder 6 by gripping a part of the disc cartridge 100 that has been ejected and pulling it toward the user.
[0083]
As described above, in the disk recording and / or reproducing apparatus 1, when the holder 6 is rotated from the insertion / removal position to the mounting position, the eject lever 23 is moved backward. I have.
[0084]
Therefore, when the holder 6 is rotated from the insertion / removal position to the mounting position, no load is applied to the disc cartridge 100 by the urging spring 28 via the action portion 26, and the positioning holes of the positioning pins 5b and 5c are not provided. The case body 101 and the positioning pins 5b, 5c can be prevented from being scratched or scraped by rubbing against the inner surfaces of the 101b, 101c.
[0085]
Further, when the disk-shaped recording medium 101 is mounted on the disk table 9, the load applied to the disk cartridge 100 by the urging force of the urging spring 28 is not applied, so that the mechanical chassis via the positioning pins 5 b and 5 c is not used. Unnecessary load on 5 can be eliminated.
[0086]
Incidentally, for example, as a disk cartridge having a disk-shaped recording medium having a diameter of about 64 mm, there is generally a disk cartridge called a mini-disc. Is allowed to have a dimensional difference of about 0.6 mm at the maximum.
[0087]
Therefore, in the disc recording and / or reproducing apparatus 1 described above, even when the mini disc having the maximum length in the insertion direction is inserted into the holder 6 in consideration of the maximum allowable dimensional difference, the positioning is performed. When the pins 5b and 5c are in contact with the inner surfaces of the positioning holes 101b and 101c, a setting is made so that a load is not applied to the disc cartridge 100 by the urging spring 28 via the action portion 26.
[0088]
Therefore, even when any disk cartridge having an arbitrary length in the insertion direction within the standard is inserted into the holder 6, the case body 101 and the positioning pins 5b, 5c can be prevented from being damaged or scraped. .
[0089]
In addition, the present invention is applied to the disc recording and / or reproducing apparatus 1 of the type in which the cover 4 is rotated with respect to the case 3 and the holder 6 is rotated with the rotation of the cover 4. Although the application example has been described, the present invention provides a disk recording and / or reproducing type in which the cover body is moved in the vertical direction with respect to the case body and the holder 6 is moved in the vertical direction with the movement of the cover body 4. It can also be applied to devices.
[0090]
The shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment of the present invention, and the technical scope of the present invention is limitedly interpreted. It must not be done.
[0091]
【The invention's effect】
As is apparent from the above description, the eject mechanism of the present invention is a disk comprising a rotatable disk-shaped recording medium mounted on a disk table disposed on a mechanical chassis and rotatably housed inside a case body. A holder for ejecting a cartridge, wherein the holder is movable between a mounting position where a disk-shaped recording medium is mounted on a disk table and an insertion / removal position where a disk cartridge is inserted or ejected, and has a lock portion. And a supported portion slidably supported in the insertion direction and the ejection direction of the disc cartridge into and out of the holder, and pressed by the disc cartridge when the disc cartridge is inserted into the holder and pressed when the disc cartridge is ejected from the holder. To the acting part and the supported part An ejector lever having a deformable elastically deformable portion, wherein a locked portion locked to the lock portion of the holder when the disk cartridge is inserted into the holder at the insertion / removal position is provided in the elastically deformable portion; An urging spring for urging the eject lever in the discharging direction, and a lock for locking the locked portion to the lock portion by deforming the elastically deformable portion of the eject lever when the holder is moved from the mounting position to the insertion / removal position. Unlocking means for unlocking, the cam sliding contact part is provided on the eject lever, and the cam sliding contact part slides on the unlocking means when the holder is moved from the insertion / removal position to the mounting position. A cam portion which is in contact with and moves the eject lever in the insertion direction is provided.
[0092]
Therefore, when the holder is rotated from the insertion / removal position to the mounting position, the load by the urging spring via the action portion for the disk cartridge is reduced, and the case is caused by rubbing the inner surface of the positioning hole of the positioning pin. The body and the positioning pin can be prevented from being scratched or scraped.
[0093]
In addition, when the disk-shaped recording medium is mounted on the disk table, the load applied to the disk cartridge by the urging force of the urging spring is reduced, so that the disk is not imposed on the mechanical chassis via the disk cartridge and the positioning pins. The required load can be reduced.
[0094]
According to the second aspect of the present invention, when the holder moves from the insertion / removal position to the mounting position, the action portion of the eject lever is separated from the disc cartridge. No load is applied by the urging spring via the portion, and the case body and the positioning pin can be reliably prevented from being scratched or scraped.
[0095]
According to the third aspect of the present invention, the lock release means is provided with a holding portion for holding the eject lever when the holder is moved to the mounting position, so that the number of parts and the manufacturing cost are reduced. The operation can be optimized without an increase.
[0096]
The disk recording and / or reproducing apparatus according to the present invention includes a mechanical chassis disposed in an outer casing and a disk cartridge in which a disk-shaped recording medium is rotatably housed in a case body. A disc recording and / or reproducing apparatus, comprising: a disc table for recording and / or reproducing information signals on and / or from a disc-shaped recording medium mounted on the disc table. A holder having a lock portion and being movable between a mounting position at which a medium is mounted on a disk table and an insertion / removal position at which a disk cartridge is inserted or discharged, and an insertion direction and discharge of the disk cartridge with respect to the holder The supported part slidably supported in the direction The disc cartridge has an action portion that is pressed by the disc cartridge and presses the disc cartridge when ejecting the disc cartridge from the holder, and an elastic deformation portion that can be elastically deformed with respect to the supported portion. An eject lever provided on the elastically deformable portion with a locked portion which is locked to the lock portion of the holder when inserted, an urging spring for urging the eject lever in the discharging direction, and the holder being moved from the mounting position. Unlocking means for deforming the elastically deformable portion of the eject lever when released toward the insertion / removal position to release the lock of the locked portion with respect to the lock portion, and providing the eject lever with a cam sliding portion, When the holder is moved from the insertion / removal position to the mounting position, the cam slide contact portion comes into sliding contact with the lock release means. The eject lever, characterized in that a cam portion for moving the said insertion direction Te.
[0097]
Therefore, when the holder is rotated from the insertion / removal position to the mounting position, the load by the urging spring via the action portion for the disk cartridge is reduced, and the case is caused by rubbing the inner surface of the positioning hole of the positioning pin. The body and the positioning pin can be prevented from being scratched or scraped.
[0098]
In addition, when the disk-shaped recording medium is mounted on the disk table, the load applied to the disk cartridge by the urging force of the urging spring is reduced, so that the disk is not imposed on the mechanical chassis via the disk cartridge and the positioning pins. The required load can be reduced.
[0099]
According to the fifth aspect of the present invention, when the holder moves from the insertion / removal position to the mounting position, the action portion of the eject lever is separated from the disc cartridge. No load is applied by the urging spring via the portion, and the case body and the positioning pin can be reliably prevented from being scratched or scraped.
[0100]
In the invention described in claim 6, since the lock release means is provided with a holding portion for holding the eject lever when the holder is moved to the mounting position, an increase in the number of parts and a reduction in manufacturing cost are provided. The operation can be optimized without an increase.
[Brief description of the drawings]
1 shows an embodiment of the present invention together with FIG. 2 to FIG. 14, and is a perspective view showing a disk recording and / or reproducing apparatus in a state where a cover body is in a closed position.
FIG. 2 is a perspective view showing a disk recording and / or reproducing apparatus in a state where a cover body is at an open position together with a disk cartridge.
FIG. 3 is a schematic perspective view showing an internal configuration of a disc recording and / or reproducing apparatus.
FIG. 4 is an enlarged exploded perspective view showing an ejection mechanism.
FIG. 5 is an enlarged perspective view showing an ejection mechanism.
6 shows the operation of the eject mechanism together with FIGS. 7 to 14, and FIG. 6 is a schematic side view showing a state where the disc cartridge is inserted into the holder.
FIG. 7 is a schematic side view showing a state where the eject lever is locked to the holder, following FIG. 6;
FIG. 8 is a schematic side view showing a state in which the holder is rotated toward the mounting position following FIG.
FIG. 9 is an enlarged side view showing a main part of FIG. 8;
FIG. 10 is a schematic side view showing a state in which the holder is rotated toward the mounting position and the eject lever is being moved rearward, following FIG. 8;
FIG. 11 is an enlarged side view showing a main part of FIG. 10;
FIG. 12 is a schematic side view showing a state in which the holder is rotated toward the mounting position and the eject lever is held by the lock release unit, following FIG.
FIG. 13 is an enlarged side view showing a main part of FIG.
FIG. 14 is an enlarged side view showing a state where the eject lever is locked to the holder again when the holder is rotated toward the insertion / removal position.
FIG. 15 is an enlarged side view showing a state immediately before the lock of the eject lever with respect to the holder is released, following FIG. 14;
16 shows an ejection mechanism in a conventional disk recording and / or reproducing apparatus together with FIGS. 17 to 19, and is a schematic side view showing a state where a disk cartridge is inserted into a holder.
FIG. 17 is an enlarged perspective view.
FIG. 18 is a schematic side view showing a state in which an eject lever is locked by a holder.
FIG. 19 is a schematic side view showing a state in which the holder is being rotated from the insertion / removal position toward the mounting position, following FIG. 18;
FIG. 20 is a conceptual diagram for explaining a conventional problem.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Disc recording and / or reproducing apparatus, 2 ... Outer casing, 5 ... Mechanical chassis, 6 ... Holder, 9 ... Disc table, 10 ... Optical pickup (recording / reproducing part), 21 ... Lock part, 23 ... Eject lever, 24 ... Supported part, 24b ... Cam sliding contact part, 25 ... Elastically deformed part, 25b ... Locked part, 26 ... Working part, 28 ... Biasing spring, 29 ... Lock release means, 29a ... Cam part, 30a ... Holding part , 100: disk cartridge, 101: case body, 102: disk-shaped recording medium

Claims (6)

An eject mechanism for a disc cartridge in which a disc-shaped recording medium mounted on a disc table arranged in a mechanical chassis and rotated is rotatably housed inside a case body,
A holder having a lock portion, which is movable between a mounting position where the disk-shaped recording medium is mounted on the disk table and an insertion / removal position where the disk cartridge is inserted or ejected,
A supported portion slidably supported in the insertion direction and the ejection direction of the disc cartridge with respect to the holder, and an operation of pressing the disc cartridge when the disc cartridge is ejected from the holder by being pushed by the disc cartridge when the disc cartridge is inserted into the holder. And an elastically deformable portion elastically deformable with respect to the supported portion, and the locked portion which is locked by the lock portion of the holder when the disk cartridge is inserted into the holder at the insertion / removal position is elastically deformed. Eject lever provided in the unit,
A biasing spring for biasing the eject lever in the discharging direction;
Lock release means for deforming the elastically deformable portion of the eject lever when the holder is moved from the mounting position to the insertion / removal position to release the locked portion from the locked portion,
A cam sliding portion is provided on the eject lever,
The lock release means is provided with a cam portion which slides a cam sliding portion when the holder is moved from the insertion / removal position to the mounting position and moves the eject lever in the insertion direction. Eject mechanism. 2. The eject mechanism according to claim 1, wherein when the holder moves from the insertion / removal position to the mounting position, the action portion of the eject lever is separated from the disk cartridge. 2. The eject mechanism according to claim 1, wherein the lock release means includes a holding portion for holding the eject lever when the holder is moved to a mounting position. A mechanical chassis disposed in an outer housing, a disk table in which the disk-shaped recording medium is mounted in a disk cartridge in which a disk-shaped recording medium is rotatably housed in a case body; and a disk table mounted in the disk table. A recording and / or reproducing device for recording and / or reproducing an information signal on a disc-shaped recording medium,
A holder having a lock portion, which is movable between a mounting position where the disk-shaped recording medium is mounted on the disk table and an insertion / removal position where the disk cartridge is inserted or ejected,
A supported portion slidably supported in the insertion direction and the ejection direction of the disc cartridge with respect to the holder, and an operation of pressing the disc cartridge when the disc cartridge is ejected from the holder by being pushed by the disc cartridge when the disc cartridge is inserted into the holder. And an elastically deformable portion elastically deformable with respect to the supported portion, and the locked portion which is locked by the lock portion of the holder when the disk cartridge is inserted into the holder at the insertion / removal position is elastically deformed. Eject lever provided in the unit,
A biasing spring for biasing the eject lever in the discharging direction;
Lock release means for deforming the elastically deformable portion of the eject lever when the holder is moved from the mounting position to the insertion / removal position to release the locked portion from the locked portion,
A cam sliding portion is provided on the eject lever,
The lock release means is provided with a cam portion that slides on a cam sliding portion when the holder is moved from the insertion / removal position to the mounting position and moves the eject lever in the insertion direction. Disc recording and / or reproducing apparatus. 5. The disk recording and / or reproducing apparatus according to claim 4, wherein when the holder moves from the insertion / removal position to the mounting position, the action portion of the eject lever is separated from the disk cartridge. apparatus. 5. The disk recording and / or reproducing apparatus according to claim 4, wherein the lock release means includes a holding portion for holding the eject lever when the holder is moved to a mounting position.

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