JPH0775093B2 - Information recording disk playing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an information recording disk playing device, and more particularly to a disk clamp mechanism.

BACKGROUND ART FIG. 13 shows a disk clamp mechanism and a turntable, which are essential parts of a conventional information recording disk playing device. As shown in the drawing, a chassis 101 having upwardly extending upright portions 101a and 101b at both left and right ends is provided.
02 is attached to the chassis. Turntable
An information recording disk 103 is placed on the disk carrying surface 102a of 102. The arrow Y direction indicates the front of the information recording disk playing device, and the arrow X direction indicates the left side. The arrow Z indicates upward.

A support member 104 is provided above the chassis 101 so as to extend in the left-right direction. Also, the left and right elevations 1 of the chassis 101
On the outer surfaces of 01a and 101b, a pair of cam members 105 and 106 extending in the front-rear direction (the arrow Y direction and the opposite direction) are provided so as to be reciprocally movable in the front-rear direction. Support member
The numeral 104 rotatably supports a disk-shaped pressing member 107 for pressing the information recording disk 103 toward the disk carrying surface 102a of the turntable 102. Two pins 104a are projectingly provided on both left and right ends of the support member 104. Each of these pins 104a corresponds to each of the elevation portions 101a, 10a of the chassis 101.
The guide member 101c is slidably fitted in a guide hole 101c formed in the vertical direction 1b so as to extend in the vertical direction (the arrow Z direction and the opposite direction), whereby the support member 104 is guided in the vertical direction.

The pins 104a provided on both left and right ends of the support member 104 are further provided with cam holes 105a, 1 formed in the cam members 105 and 106, respectively.
It is slidably engaged with 06a. Each cam hole 105a, 106a is formed as a whole so as to incline upward toward the front. That is, when each of the cam members 105 and 106 moves back and forth, the support member 104 moves up and down, and the pressing member 107 can be attached to and detached from the information recording disk 103 on the turntable 102. In addition, each cam member
The rack parts 105b and 106 are arranged on the 105 and 106 along the moving direction.
b is formed, and a drive source (not shown) including a gear that meshes with each rack portion and reciprocating the cam members 105 and 106 is provided.

In the above-mentioned information recording disk playing device, a cam member for vertically moving the supporting member 104 together with the pressing member 107.
Since 105 and 106 are relatively large flat members and a large space is required for the cam members to reciprocate, it is difficult to reduce the size of the entire information recording disk playing device. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide an information recording disk playing device that can be easily downsized.

An information recording disk playing device according to the present invention includes a pressing member that presses an information recording disk toward a disk carrying surface of a turntable, and a pressing member that is movably provided in a plane substantially perpendicular to the disk carrying surface. A supporting support member, a tray for carrying the information recording disk between a predetermined storage position near the disk carrying surface and the outside of the housing of the apparatus, and a tray provided on the housing so as to be movable in the carrying direction of the tray. And the guide rail that slidably supports the information recording disc, the tray is moved together with the guide rail toward the inside of the housing until the information recording disc reaches a predetermined storage position, and then only the guide rail is further inside the housing. Continue to move towards,
A drive means for moving only the guide rail toward the outside of the housing when ejecting the information recording disk, and further moving the tray together with the guide rail toward the outside of the housing.
And a clamping force transmission mechanism for moving the support member in conjunction with the movement of the guide rail by a predetermined distance.

Example An information recording disk playing device as an example of the present invention will be described below with reference to the accompanying drawings. The information recording disc playing device is an auto-loading disc player that automatically conveys the disc to the playing position and plays it. In FIG. 1, reference numeral 1 indicates the entire auto-loading disc player.

As shown in FIG. 1, the front portion of the player housing 2,
That is, the front panel 3 is provided with a rectangular opening 3a extending in the left-right direction so that the tray 5 can be projected to the outside of the player housing. However, the left-right direction referred to here is toward the front indicated by the arrow Y, and the arrow X direction is the left side. The arrow Z indicates upward. A switch group 7 for operating the disc player is provided on the front panel 3.

The tray 5 is for carrying, for example, three different types of optical information recording disks 8, 9 and 10 (hereinafter abbreviated as disks) and carrying them. Arc-shaped outer peripheral recess 5 that can accommodate a disk
a, 5b, 5c are formed concentrically and with a predetermined step.

As shown in FIG. 2, in the player housing 2, a rectangular parallelepiped chassis 12 having an open front surface and an upper surface is fixedly mounted. A pair of left and right guide rails 13 and 14 for guiding are provided in parallel in the front-rear direction (the arrow Y direction and the opposite direction). As a result, the tray 5 can be housed so as to project into the player housing 2 (a).
4A and 4B show the details of the tray 5, and FIGS. 4A to 4C show the details of the guide rail 14 on the right side. The guide rail 13 on the left side is formed in substantially the same shape as the guide rail 14 on the right side, and details thereof are not shown. As is apparent from FIG. 3 (b), the tray 5 is formed with a pair of left and right sliding contact grooves 5d, and a guide protrusion 14a formed on the guide rail over substantially the entire length (FIG. 4 (a)). , (B), the sliding contact groove 5d is in smooth sliding contact.

As shown in FIGS. 3 (a) and 3 (b), a pair of left and right rack portions 1 are provided on the lower surface of the tray 5 along the moving direction of the tray.
6,17 are fixed. As shown in FIG. 2, the chassis 12
A small chassis 18 is provided on the right front end of the, and a gear 19a that meshes with the right rack portion 17 of the pair of rack portions is provided on the small chassis 18. The gear 19a is a gear 19b which is provided concentrically with the gear 19a and other gears 20,2.
1, a worm wheel 22, a worm 23, and gears 24, 25 are sequentially connected to an output shaft of a motor 26. These gears 19a, 19b, 20, 21, worm wheel 22, worm 2
3, the gears 24 and 25, and the motor 26 constitute a driving force applying unit that applies a driving force to the rack portion 17. The driving force applying means and the rack portion 17 constitute a driving means for reciprocating the tray 5 back and forth.

As shown in FIG. 2 and FIG. 3 (a), the pair of rack portions 16 and 17 are the deepest portions 16a and 17 that are further projected from the end of the tray 5 in the storage direction to the back of the player housing 2.
have a. The deepest portions 16a and 17a are also provided with sliding contact portions that slide into contact with the guide rails 13 and 14. One of the deepest portions 17a is shown in FIGS. 5 (a) to (d) and FIG.
Shows the details of. The other deepest portion 16a is formed symmetrically with the deepest portion 17a, and details thereof are not shown. As shown in FIG. 2, FIG. 3 and FIG. 6, a pin 5f as a rotation support portion is extended and protrudes upward at the end of the tray 5 in the storage direction, and the deepest portions 16a and 17a are formed in this pin. It is flexibly attached to 5f. Bending position of the deepest portion 17a shown in FIG. 3 and bending position of the deepest portion 17a shown by a solid line in FIG. 6, that is, the deepest portion 17a with respect to the remaining portion of the rack portion 17 excluding the deepest portion. The position where is linear is called the first bending position. Also, the deepest part 17a shown in FIG.
And the deepest part 17a indicated by the alternate long and two short dashes line in FIG.
The bending position of, that is, the bending position of the deepest portion 17a when the tray 5 is housed in the player housing 2 is referred to as a second bending position.

The deepest portion 17a can be bent at a bending position indicated by a dashed line in FIG. 6, that is, at a third bending position sandwiching the first bending position together with the second bending position. .
However, normally, the stopper 5g provided at the end of the tray 5 in the storage direction is engaged with the deepest portion 17a, whereby the deepest portion 17a is located between the first bending position and the second bending position. It can rotate only and is positioned at the first bending position by this stopper 5g. In addition, the deepest portion 17a is the third
A coil spring 17b is provided as a biasing unit that biases the bent spring toward the bending position.

The third bending position described above is a position taken when the deepest portion 17a is attached to and detached from the tray 5. That is, when the deepest portion 17a is removed from the tray 5, the non-rack portion 17d (the sixth portion, which is an engaging portion of the deepest portion 17a with the stopper 5g).
Due to the flexibility of the non-rack portion, the non-rack portion 17d is bent upward (in the direction of arrow Z) by a finger so that the stopper 5
The deepest part 17a is bent from the first bending position to the third bending position while not engaging with g, and the pin 5f is pressed at the third bending position.
The deepest part 17a is pulled out from. Also, the deepest part 1
To attach 7a to tray 5, reverse this procedure. The rear end of the remaining portion of the rack portion 17 excluding the deepest portion 17a prevents the deepest portion 17a at the first and second bending positions from coming off from the pin 5f. That is, when the deepest portion 17a is in the first bending position and the second bending position, the rack portion of the deepest portion 17a is engaged with the rear end portion of the remaining portion so that the deepest portion 17a does not come off from the pin 5f. Is done. However, this retaining means allows the deepest portion 17a to be removed from the pin 5f when the deepest portion 17a is at the third bending position.

As shown in FIGS. 2 and 6, the player housing 2
Bending means for smoothly engaging the deepest portions 16a and 17a in the inner part of the tray and folding both deepest portions from the first folding position to the second folding position as the tray 5 is stored. The guide member 30 is fixedly installed. The guide member 30 has a triangular sectional shape, and the provision of the guide member 30 allows the deepest portions 16a, 17a to be smoothly bent.

As is apparent from FIG. 2, the pair of guide rails 13 and 14 for guiding the tray 5 are movable in the extension direction thereof, that is, the tray guide direction (the arrow Y direction and the opposite direction), and together with the tray 5, the player housing 2 is provided. Can project out. The guide rails 13 and 14 have rack portions 13b, 13c, 14b, on both left and right sides thereof along the moving direction and along the entire length.
14c are formed respectively. As shown in FIG. 2, of the pair of rack portions 16 and 17 provided on the tray 5, the gear 19a meshing with the rack portion 17 on the right side and the gear 19b provided concentrically are provided on the outer rack of one guide rail 14. It meshes with the portion 14c. Similarly, as shown in FIG. 2, a gear 32a that meshes with the left rack portion 16 provided on the tray 5 is provided, and a gear 32b that is concentric with and integrally with the gear 32a is the other. Is engaged with the rack portion 13c on the outer side of the guide rail 13. When the motor 26 rotates, the gear 19b rotates and one of the guide rails 14 moves, while
The gear 32 is rotated by the rack portion 16 provided on the tray 5 which is moved by the rotation of the gear 19a which rotates together with the gear 19b.
The a and 32b are rotated so that the other guide rail 13 is moved. That is, each guide rail 13 and 14
Is moved by being given a driving force by a driving means including a motor 26 for moving the tray 5. The tooth number ratio of each gear is set so that the guide rails 13 and 14 move 120 mm, for example, while the tray 5 moves 300 mm, for example. This drive means moves only the guide rail 14 backward after the tray 5 is housed in the player housing 2. The configuration for this will be described below.

The gear 19a shown in FIG. 2, that is, the gear meshing with the rack portion 17 fixed to the tray 5 is a pin on the small chassis 18.
Up and down direction via 34a (arrow Z direction and opposite direction)
Is provided on a swing plate 34 that is swingable. However, the other gears 19b, 20, 21 and the worm wheel 22 arranged near this gear 19a are the small chassis 1
It is provided on 8. As shown in FIG. 7, the gear 19a,
An outer rack portion of the guide rail 14 provided concentrically with the gear.
Clutch portions 19c and 19d are formed on the gear 19b meshing with 14c, and the gears 19a and 19b are connected and separated from each other by the rocking of the rocking plate 34. Further, as shown in FIG. 7, the swing plate 34 and the gear 19a
Is provided with a coil spring 35 that applies a biasing force downward (direction opposite to the arrow Z direction). As shown in FIGS. 4A and 4C, an engaging plate 36 is attached by a screw 36a to the front end portion of the guide rail 14 having a rack portion 14c that meshes with the gear 19b. However,
The screw 36a is inserted into a long hole 14e formed in the guide rail 14 along the extending direction of the guide rail, and the position of the engagement plate 36 can be adjusted by loosening the screw 36a. When the guide rail 14 is housed in the player housing 2, the engagement plate 36 engages with the free end portion of the swing plate 34 to move the swing plate 34 to the coil spring 35 (shown in FIG. 7). Swing upward against the urging force of. As a result, the engagement of the clutch portions 19c, 19d of the gears 19a, 19b is released, and only the gear 19b rotates with the rotation of the motor 26, and the gear 19a does not rotate. The position of the engagement plate 36 is set so that the tray 5 is housed in the player housing 2 and the clutch portions 19c and 19d are disengaged at the same time. That is, the driving means including the motor 26 and the like moves only the guide rail 14 rearward after the tray 5 is housed in the player housing 2. As will be described later, the disc clamp mechanism is operated by the rearward movement of only the guide rail 14 after the tray 5 is housed in the player housing 2.

As shown in FIGS. 1 and 8, a turntable 40 for rotating the discs 8 to 10 which is directly driven to rotate by a motor 39 is arranged in the player housing 2 so that its disc-carrying surface faces downward. And
It is attached to a sub chassis 41 as a first carrying member fixed to the player housing 2. In addition,
Subchassis 41 is also shown in FIG. The above-mentioned tray 5 moves forward and backward (in the direction of arrow Y and in the opposite direction) in parallel with the disk carrying surface of the turntable 40.

For example, the disk 10 carried on the tray 5 and housed in the player housing 2 in parallel with the disk carrying surface of the turntable 40 is located immediately below the disk carrying surface of the turntable 40 with a predetermined gap. Turntable
The disc 10 located immediately below 40 is separated from the tray 5 by being lifted upward (in the direction of arrow Z) by the disc clamp mechanism, and the turntable is
It is clamped against 40 disc bearing surfaces.

As shown in FIGS. 1 and 2, and FIGS. 8 to 10,
The disc clamp mechanism includes a disc-shaped pressing member 44 that comes into contact with the disc 10 and adsorbs and presses the disc 10 toward the disc-carrying surface of the turntable 40 by the magnetic force of a magnet. Opposite direction), that is, it is rotatably provided in a plane perpendicular to the disk carrying surface of the turntable 40, and the pressing member 44 is rotated at its free end and on the surface opposite to the disk carrying surface of the turntable. A supporting member 45 as a second supporting member that is movably supported, and a spring member 46 (see FIG. 8) as a biasing means that biases the supporting member 45 in a direction in which the pressing member 44 approaches the disk carrying surface of the turntable 40. Shown). As shown in FIGS. 2 and 9, a lever member 47 is disposed in front of the pressing member 44, and is rotatably mounted on the small chassis 48 via a support pin 47a in the vertical direction. . An intermediate member 47c is rotatably attached to the action point portion of the lever member 47, that is, the rear end portion by a pin 47b, and the intermediate member 47c is engaged with the free end portion of the support member 45 via the pressing member 44. ing.

A small chassis 48 that supports the lever member 47 via support pins 47a.
The support shaft 50 parallel to the rotation center axis of the turntable 40 is on the top.
The support shaft 50 is provided with a disc-shaped cam member 51.
Is rotatably attached. As is particularly clear from FIG. 11, the cam member 51 is formed with a spiral cam groove 51a around its rotation center axis, and a circular pin 47e protruding from the lever point of the lever member 47 is formed in this spiral. The cam groove 51a can smoothly slide. A gear 51b is integrally formed with the cam member 51, and the gear meshes with the inner rack portion 14b of the right guide rail 14 via the other two gears 52 and 53. That is, as the guide rail 14 moves backward, for example, as the motor 26 rotates, the cam member 51 rotates clockwise in FIG. 9, which causes the lever member 47 to rotate clockwise in FIG. The support member 45 is rotated counterclockwise in FIG. 8 so that the disc is clamped. When releasing the disc clamp, the reverse process is followed. Note that the lever member 47 rotates while pressing the pressing member 44 against the support member 45 in a manner that opposes the biasing force of the spring member 46 (shown in FIG. 8) during clamping and unclamping. Therefore, the pressing member 44 does not rattle during the rotation of the support member 45.

Here, the rotation support mechanism that rotatably supports the support member 45, which is a component of the disc clamp mechanism described above, will be described in detail.

As shown in FIG. 2, FIG. 8 to FIG. 10, the rear chassis of the sub-chassis 41 is provided with a projection 45a projecting upward from the rear end of the support member 45 which is a rotating member. A rectangular first opening 41a (shown in FIG. 10) is formed for insertion.
A circular second opening 45b is formed in the protrusion 45a. The second opening 45b is arranged above the first opening 41a and has a diameter larger than the width dimension b (shown in FIG. 10) of the first opening 41a. A spherical member 56 having a diameter larger than the width dimension b of the first opening 41a is arranged in the second opening 45b. A receiving plate 57 is fixed to the lower end of the protrusion 45a, and between the receiving plate 57 and the sub-chassis 41, the support member 45 is supported by the spherical member 56.
A coil spring 58 as a biasing means for biasing in a direction approaching is compressed. A circular opening 41b having an inner diameter larger than the width dimension b of the first opening 41a and smaller than the diameter of the spherical member 56 is formed at the center of the first opening 41a. The spherical member 56 engages with this circular opening 41b, which causes the spherical member 56 to have the first opening 41a and the second opening 45b.
It is positioned so that it does not shift with respect to.

That is, the spherical member 56 interposed between the support member 45 and the sub-chassis 41 and smoothly slidingly contacting the support member and the sub-chassis is provided in and on the rotation surface of the support member 45 by the circular opening 41b as the positioning means. The support member 45, the sub-chassis 41, and the spherical member 56 are pressed against each other by the coil spring 58 so that the support members 45, the sub-chassis 41, and the spherical member 56 are rotated so that the gap between the three members is rotated. It is zero within the plane. With this configuration, the support member 45 rotates with high precision without rattling.

As shown in FIGS. 2, 8, and 9, a tilt chassis 61 is rotatably attached to the lower surface of the support member 45 described above via a pin 61b. The pin 61b extends in the left-right direction (the arrow Y direction and the opposite direction). A carriage 62 carrying an optical pickup is arranged on the tilt chassis 61, and is guided by a guide shaft 63 or the like to move along the recording surface of the disk 10 mounted and clamped on the turntable 40. There is. Further, although not shown, drive means for moving the carriage 62 is provided.

As is particularly clear from FIG. 9, a motor 65 for rotating the tilt chassis 61 is provided at the right rear end of the support member 45 supporting the tilt chassis 61. Motor 65
A worm 65a is fitted to the output shaft of the worm wheel, and a worm wheel 66 meshing with the worm 65a is provided, and a pin 66a protruding from the worm wheel in a radial direction from the center of rotation of the worm wheel is mounted on the tilt chassis. It is in smooth sliding contact with one free end of 61. Further, a spring member 67 for applying a bias force to the tilt chassis 61 is provided. Therefore, the tilt chassis 61 is rotated by the rotation of the motor 65 and by the bias force applied by the spring member 67, and tilt servo is performed.

The drive signal system of the drive means for rotating the support member 45 is provided with means for superimposing a signal representing the distance between the disc and the optical pickup, for example, a drive low frequency component.

Next, the structure of the turntable 40 will be described in detail. As shown in FIG. 12, for example, an annular disc receiving member 76 made of rubber or the like is attached to the disc carrying surface of the turntable 40. Further, for example, three low friction members 78, each of which is a spherical member, and the like, and three coil springs 79 that apply a biasing force to the low friction member are arranged in the circumferential direction of the disc holding surface. Are arranged at an equal pitch. The low friction member 78 comes into contact with the disk surface as the disk 10 mounted on the disk carrying surface of the turntable 40 by the disk clamp mechanism including the pressing member 44 approaches the disk carrying surface. . As shown in FIG. 12, the disc is placed on the pressing member 44.
When the 10 is mounted in an inclined state, the pressing member 44
Also, as the disk 10 approaches the turntable 40, the disk 10 contacts the low friction member 78. As a result, the disk 10 is finely moved in the radial direction while the tilted state on the pressing member 44 is corrected, and is returned to the normal horizontal state. In this state, the disc is clamped and the disc is centered on the turntable 40 with high accuracy.

Next, the operation of the auto-loading disc player having the above-mentioned configuration will be briefly described according to the playing procedure.

First, a tray 5 as shown in FIG. 1 is projected to the outside of the player housing 2, and a disc 10, for example, is placed on the tray. The operation of projecting the tray 5 to the outside of the player housing is performed by following the reverse process of the storage operation described below, and thus will not be described in detail. When the tray 5 projects outside the player housing 2, the guide rails 13 and 14 also project outside the player housing 2, and the tray 5 is firmly supported by the projected guide rail.

After the disk 10 is placed on the tray 5, when a command to start playing the disk is generated by operating the switch group 7, the motor 26 starts to rotate. As a result, the storage operation of the tray 5 and the guide rails 13 and 14 is started. When the tray 5 is housed in the player housing 2 together with the guide rails 13 and 14, an engaging plate 36 (shown in FIGS. 4A and 4C) provided on the right guide rail 14 is provided with a swing plate 34. This swing plate 34 is swung upward by engaging the free end (shown in FIG. 2). As a result, as shown in FIG. 7, the meshing of the clutch portions 19c and 19d of the gears 19a and 19b is released and the tray 5 is stopped. Thereafter, only the gear 19b is rotated by the rotation of the motor 26, and the guide rail 14 Only backward movement is performed. However, when the tray 5 is stopped, the left guide rail 13 is not driven and stops. This guide rail 14
Cam member shown in FIG. 2 by the rearward movement of the chisel
The spiral cam groove 51a of 51 makes sliding contact with the round pin 47e of the lever member 47, and the lever member 47 is rotated clockwise in FIG. Therefore, the lever member 47 rotates the support member 45 in the counterclockwise direction in FIG. 8 to raise the pressing member 44 and press the disk holding surface of the turntable 40 so as to lift the disk 10 on the tray 5. And clamp.
The clamp is made by a magnet (not shown) provided in the pressing member 44 attracting the turntable 40. At this time, as shown in FIG. 12, when the disc 10 is mounted on the pressing member 44 with an inclination, the disc 10
As the disk approaches the disk carrying surface of the turntable 40, the disk 10 comes into contact with the low friction member 78 of the turntable 40. As a result, the disc 10 is smoothly guided in the radial direction and its inclination is corrected, and the disc 10 is accurately centered with respect to the turntable 40. In this state, the motor 26 is stopped and the disc can be played.

After that, the turntable 40 is rotated, the carriage 62 carrying the optical pickup is moved, and the disc performance is started. After the pressing member 44 clamps the disc 10 on the turntable 40 by the attraction force of the magnet, the supporting member 45 that supports the pressing member supports the pressing member and the supporting member in order to make the pressing member rotatable. It is movable within the range of the gap provided between the member. When the disc is played, the support member 45 is driven within this movable range according to the surface deflection of the disc 10 to adjust the height of the optical pickup. Further, at the same time, the tilt chassis 61 is appropriately driven by the driving means to maintain the orthogonal relationship between the recording surface of the disk 10 and the optical axis of the irradiation light emitted from the optical pickup toward the recording surface.

When it is detected by the detection means (not shown) that the carriage 62 has reached the movement limit position after the disk performance is finished, the carriage 62 and the turntable 40 are stopped,
Then, the motor 26 starts the reversing operation. Therefore, as described above, the tray 5 follows the process reverse to the above and protrudes to the outside of the player housing 2 together with the guide rails 13 and 14, and becomes the state shown in FIG. After that, the disk 10 is recovered, and thereafter, the same operation is performed on the disk 8 or 9.

As described in detail above, in the information recording disk playing device according to the present invention, the pressing member (44) for pressing the information recording disk toward the disk carrying surface of the turntable, and the pressing member (44) for the disk carrying surface are provided. A support member (45) that is movably provided in a plane perpendicular to and supports the pressing member, and the tray (5) together with the guide rails (13, 14) and the housing (2) when the information recording disk is stored. The information recording disk is moved inward to a position where it reaches a predetermined storage position, then only the guide rail is further moved to the back, and the support member is moved in conjunction with it, so that the pressing member moves the information recording disk. On the turntable (40) against the disc bearing surface, and when ejecting the information recording disc, move only the guide rail toward the outside of the housing. Since the disc is pressed against the turntable and then the tray is moved to the outside of the housing together with the guide rails, it is easy to downsize the entire device as compared with the conventional information recording disc playing device. Instead, since the disc clamping force is applied by moving the guide rails separately from the tray, there is an advantage that the number of partial points can be reduced and the constitution of the disc clamping mechanism is simplified.

[Brief description of drawings]

FIG. 1 is a perspective view including a partial cross section showing the entire auto loading disc player according to the present invention, and FIG.
A plan view including a partial cross-section of the internal structure of the auto-loading disc player shown in the drawings, FIGS. 3 (a) and 3 (b) are plan views and side sectional views of the tray, respectively, and FIGS. 2 is a detailed view of a part of the internal structure shown in FIG. 2, FIG. 8 is a front view including a partial cross section of the internal structure shown in FIG. 2, and FIGS. 9 to 11 are internal views of the internal structure shown in FIG. Partial detailed view, No.
FIG. 12 is a side view including a partial cross section of the turntable, and FIG. 13 is a perspective view including a partial cross section of the internal mechanism of the conventional information recording disk playing device. Explanation of main part code 2 …… Player housing 5 …… Tray, 5d …… Sliding contact groove 5f …… Pin, 5g …… Stopper 8,9,10 …… Disk 12 …… Chassis 13,14 …… Guide rail 13b, 13c, 14b, 14c, 16,17 …… Rack part 14a …… Guide protrusion 16a, 17a …… Deepest part 17b, 35,58 …… Coil spring 17d …… Non-rack part 19a, 19b, 20,21 , 24,25,32a, 32b, 51b, 52,53 …… Gear 26,39,65 …… Motor 30 …… Guide member 34 …… Swing plate 36 …… Engage plate 40 …… Turntable 41 …… Subchassis 41a …… First opening 41b …… Circular opening 44 …… Pressing member 45 …… Supporting member, 45a …… Projection 45b …… Second opening 46,67 …… Spring member 47 …… Lever member , 50 …… Support shaft 51 …… Cam member 51a …… Spiral cam groove 56 …… Spherical member 61 …… Tilt chassis 62 …… Carriage

Continuation of the front page (56) References JP-A-59-135650 (JP, A) JP-A-61-206958 (JP, A) JP-A-58-205949 (JP, A) Actual development Sho-62-187449 (JP , U) Actually open 60-35353 (JP, U) Actually open 61-68355 (JP, U) Actually open 60-3953 (JP, U) Actually open 60-64451 (JP, U)

Claims (1)

[Claims] 1. A pressing member for pressing an information recording disk toward a disk carrying surface of a turntable, and a support movably provided in a plane substantially perpendicular to the disk carrying surface to support the pressing member. A member; a tray for carrying the information recording disk between a predetermined storage position near the disk carrying surface and the outside of the housing of the apparatus; and a tray provided in the housing so as to be movable in the carrying direction of the tray. A guide rail that slidably supports the tray, and moves the tray together with the guide rail toward the inside of the housing when the information recording disk is stored, until the information recording disk reaches the predetermined storage position, and then, Only the guide rails are continuously moved toward the inside of the housing, and when the information recording disc is ejected, A drive means for moving only the guide rail toward the outside of the housing, and further moving the tray together with the guide rail toward the outside of the housing, and the support in association with the movement when only the guide rail moves. An information recording disk playing device including a clamp force transmission mechanism for moving a member.