JP4976713B2 - Disc player - Google Patents

Description

  The present invention relates to a disc player that is mounted on a vehicle and reproduces information on a recording medium disc such as a CD (compact disc) or a DVD (digital versatile disc).

The conventional disc player supports the drive unit in a floating manner inside the chassis, and loads and reproduces the disc on the drive unit, and at least when the disc is ejected or waiting for loading, the drive unit is released from the floating state and locked to the chassis ( For example, see Patent Document 1).
WO / 2001/091119

  Various proposals have been made for this type of locking mechanism. However, in the conventional proposal, the structure is complicated, the number of parts is increased, and the cost is increased. There was a problem of becoming.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a disc player that solves the problems of the conventional techniques described above, has a simpler configuration than the conventional one, reduces the number of parts, reduces costs, and can be thinned. There is.

The present invention is provided with a lock mechanism for floatingly supporting a drive unit inside a chassis, loading and reproducing a disk on the drive unit, and releasing the drive unit from floating and locking the disk to the chassis at least during disk ejection or loading standby. In the disc player, the drive unit includes a base plate and a swing plate that holds the disc in cooperation with the base plate, and the lock mechanism includes a first lock mechanism disposed on one side of the drive unit, and the other side. The second lock mechanism is composed of a cam member and a lock member, and the cam member is rotatably supported on the base plate, and the base end and the free end thereof are supported. , Each gear together The base end gear is meshed with the gear formed on the swing plate, the free end gear is meshed with the lock member gear, and the lock member is rotatably supported by the base plate. The drive unit is configured so that the end protrudes from an opening formed in the swing plate, the free end is brought into contact with the rear surface of the chassis and locked, and the free end is lowered in conjunction with the closing operation of the swing plate. A drive mechanism for driving the first lock mechanism and the swing plate is provided on the one side of the first lock mechanism, and the second lock mechanism is disposed between the base plate and the swing plate, and is driven by the drive mechanism. The second lock mechanism is driven through a swing plate .

  In this configuration, since the operation of the lock mechanism is linked to the operation of the swing plate, there is no need for an extra actuator to operate it, and the number of parts is reduced and the cost is reduced with a simple configuration. it can. Further, since the structure is simplified, the thickness of the disc player can be reduced accordingly.

  In this configuration, since the lock member of the lock mechanism is raised and lowered in conjunction with the opening and closing operation of the swing plate, an extra actuator for raising and lowering this is not necessary, and the lock mechanism can be operated with a simple configuration.

  In the present invention, since the operation of the lock mechanism is linked to the operation of the swing plate, an extra actuator or the like for operating the lock mechanism is not necessary, and the number of parts can be reduced and the cost can be reduced with a simple configuration. Further, since the structure is simplified, the thickness of the disc player can be reduced accordingly.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing the external appearance of the disc player according to the present embodiment. In this disc player, a recording medium disc having a different size such as a diameter of 8 cm or a diameter of 12 cm, such as a CD or a DVD, is drawn, and information recorded on the disc is reproduced. Reference numeral 1 denotes a main body, and the main body 1 includes a chassis 3 made of sheet metal. The chassis 3 includes a lower chassis 5 and an upper chassis 7 that covers the upper portion of the lower chassis 5, and a loading mechanism for loading a disk, which is not shown in FIG. There are provided a clamper mechanism for driving, a drive mechanism for driving the clamper mechanism, and the like.

  2 is a perspective view with the upper chassis 7 removed, FIG. 3 is a perspective view of the lower chassis 5, and FIG. 4 is a left side perspective view in which the drive unit 9 is attached to the lower chassis 5. FIG. 5 is a right-side perspective view in which the drive unit 9 is attached to the lower chassis 5.

The lower chassis 5 is formed in a frame shape as shown in FIG. 3, and three vibration isolation structures 11 having dampers and springs are attached to the lower chassis 5. As shown in FIG. 2, a drive unit 9 in which a clamper mechanism and a drive mechanism are integrated is placed and supported in a floating manner.
As shown in FIGS. 4 and 5, the drive unit 9 is connected to the base plate 13 on both sides of the rear end portion of the base plate 13 by hinges 15 and is spring-biased in a direction to close the tip 17A. And a swing plate 17 that clamps the disk in cooperation with each other. A rotating plate 19 is supported on the tip 17 A of the swing plate 17, and a turntable 21 containing a magnet facing the rotating plate 19 is supported on the base plate 13. As will be described later, when the disc is inserted and the swing plate 17 is closed, the disc can be rotated by being sandwiched between the rotating plate 19 at the tip 17A and the turntable 21 with magnet.

As shown in FIG. 1, a horizontally long disk insertion slot 23 is formed in the front surface of the main body 1, and at the back of the insertion slot 23 is a motor 24 at the front of the lower chassis 5 as shown in FIG. 2. A loading roller 25 to be driven is provided.
When the disc is detected, the loading roller 25 is driven by the motor 24 to draw the disc into the main body 1. The loading roller 25 is supported by a roller support plate 27, and the base of the roller support plate 27 is connected to the lower chassis 5 by a hinge pin 28. Therefore, the loading roller 25 displaces its height position by the swinging of the roller support plate 27.

  A trigger plate 31 is swingably supported via a support pin 30 on the left rear portion of the upper surface of the drive unit 9. The trigger plate 31 is biased counterclockwise by a spring 31S, and two claw portions 32 and 33 bent inward of the drive unit 9 are integrally formed at one end 31A thereof. Yes. The pulled-in 8 cm disc can come into contact with one claw portion 32, and the drawn-in 12 cm disc can come into contact with the other claw portion 33. The other end 31 </ b> B of the trigger plate 31 extends to the outside of the drive unit 9 and is bent downward along the outer wall of the drive unit 9. The other end 31 </ b> B contacts the rear surface 35 </ b> K of the trigger 35 disposed in the lower chassis 5. Then, when the disc is drawn into the main body 1 and abuts against one of the claws 32 and 33 and the trigger plate 31 rotates counterclockwise, the trigger plate 31 advances the trigger 35 (in the direction of arrow X). Let As shown in FIG. 4, the trigger 35 is normally biased toward the other end 31 </ b> B (in the direction of arrow Y) by a spring 34.

  As shown in FIG. 4, a part of the trigger 35 extends the bottom of the lower chassis 5 forward, and a trigger rack gear 35A is integrally formed on the upper surface of the extension. A final gear 37 (see FIG. 3) supported by the side plate 5A of the lower chassis 5 is disposed in front of the trigger rack gear 35A. The final gear 37 is supported at a position where it does not mesh with the trigger rack gear 35A at normal times, and meshes with the trigger rack gear 35A only when the trigger plate 31 rotates and the trigger 35 moves forward. As shown in FIG. 2, the final gear 37 is connected to the motor 24 at the front of the lower chassis 5 via a gear train 38 composed of a plurality of gears. When the motor 24 is driven, the trigger rack gear 35A is connected. Once the final gear 37 and the final gear 37 are engaged with each other, the trigger 35 is advanced by the driving force of the final gear 37 and the motor 24 thereafter.

As shown in FIG. 4, a trigger cam 41 is integrally connected to the trigger 35. The trigger cam 41 extends inside the gear wheel train 38 in parallel with the gear wheel train 38, and a cam surface 41A is formed on the middle upper surface. The part is formed with a step-like inclined groove 41B that rises forward to guide the drive shaft 25A (see FIG. 2) of the loading roller 25. A part 17B of the swing plate 17 of the drive unit 9 is in contact with the cam surface 41A.
After the trigger 35 meshes with the final gear 37 and moves to the stroke end, the trigger cam 41 is pushed out, the rack of the trigger cam 41 meshes with the final gear 37, and the trigger cam 41 moves forward (in the direction of arrow X).

  When the trigger cam 41 moves forward (in the direction of the arrow X), the cam surface 41A with which the part 17B comes into contact gradually decreases, and the swing plate 17 swings in the closing direction by the spring force, and further advances. When the trigger cam 41 moves to the forward limit position, the part 17B is completely separated from the cam surface 41A, and the disc clamping by the rotary plate 19 at the tip of the swing plate 17 and the turntable 21 is completed. At the same time, the drive unit 9 is completely supported by floating via the three vibration-proof structures 11 by releasing the engagement between the part 17B of the swing plate 17 and the cam surface 41A. At the same time, the drive shaft 25A of the loading roller 25 moves to a low position along the inclined groove 41B, and the loading roller 25 is displaced low by the swinging of the roller support plate 27. Move away from the bottom of the disc. In this state, the turntable 21 is rotated to reproduce the disc.

  When the motor 24 is rotated in the reverse direction, the trigger 35 and the trigger cam 41 move backward (in the direction of arrow Y) via the gear wheel train 38, the final gear 37, and the trigger rack gear 35A. Along with this, the cam surface 41A with which the part 17B abuts gradually increases, and the swing plate 17 is pushed up against the spring force and swings in the opening direction. When the trigger cam 41 further moves backward and moves to the retreat limit position, a part 17B rides on the highest position of the cam surface 41A, and the disk is located between the rotary plate 19 at the tip of the swing plate 17 and the turntable 21. A gap for insertion is formed.

At the same time, the drive shaft 25A of the loading roller 25 gradually moves to a higher position along the inclined groove 41B. At the retreat limit position, the loading roller 25 is brought into contact with the lower surface of the disk by the swinging of the roller support plate 27. High displacement until contact. Then, the disc is ejected by the loading roller 25.
After ejecting the disc, it is in a waiting state for loading. In the eject or loading standby state, the drive unit 9 is locked to the chassis 3 by the lock mechanism described below.

Next, the lock mechanism of the drive unit 9 will be described.
This locking mechanism includes two mechanisms, a first locking mechanism and a second locking mechanism. FIGS. 6 and 7 show the locked state of the first locking mechanism, and FIGS. 8 and 9 show the first locking mechanism. Indicates the unlocked state. 10 shows the locked state of the second lock mechanism, and FIG. 11 shows the unlocked state of the second lock mechanism.

As shown in FIG. 6, the first lock mechanism 100 is configured to support a gear plate 92 via a pin 91 on the bottom plate of the lower chassis 5. One end of a spring 93 is connected to the fixed end 92 </ b> A of the gear plate 92, and the other end of the spring 93 is connected to the fixed portion 5 </ b> K of the lower chassis 5. Two different cam holes 94 and 194 are formed in the lower chassis 5 and the gear plate 92, and the cam holes 94 of the gear plate 92 are fitted with the pins 95 of the sub-block plate 98. The cam hole 194 is fitted with the pin 197 of the lock plate 96. The gear plate 92 is rotatably supported around the pin 91 and is always urged counterclockwise by a spring 93.
A gear 92G is integrally formed on the outer periphery of the gear plate 92, and the gear 92G meshes with a rack gear 41R formed on the inner surface of the bottom portion of the trigger cam 41 and extending in the front-rear direction of the drive unit 9. .

The lock plate 96 reciprocates in the left-right direction (the direction of the arrow Q) in conjunction with the rotation of the gear plate 92. The lock plate 96 is a flat plate having a left end 96A, a lower end 96B, and an upper end 96C in the drawing. As shown in FIG. 7, lock plates 96D and 96F that are bent upward and rise up and an arc hole 96E are provided. I have.
The lock piece 96D can be fitted into the groove 99A of the fixed piece 99, and the fixed piece 99 is fixed to the base plate 13 (see FIG. 10) of the drive unit 9. The lock piece 96F can be fitted to the fixed piece 13X (see FIG. 11), and the fixed piece 13X is formed integrally with the base plate 13.

  A pin 97 is loosely fitted in the arc hole 96E. The pin 97 is fixed to the gear plate 92 and extends upward, and its upper end is loosely fitted in the long hole 98A of the sub-block play 98. The sub-block play 98 extends above the lock plate 96 in the same direction as the lock plate 96. The pin 197 of the lock plate 96 is fitted into the cam hole 194 of the gear plate 92, and the pin 95 of the sub-block plate 98 is fitted into the cam hole 94. The plate 96 and the sub-block plate 98 reciprocate in the direction of arrow Q shown in FIG. In FIG. 11, when the lock plate 96 and the sub-block plate 98 are moved in the direction of the arrow R, the lock piece 96D is fitted into the groove 99A of the fixed piece 99, and the lock piece 96F is fitted into the fixed piece 13X. Thus, when the drive unit 9 is locked and operates in the direction opposite to the arrow R, the lock piece 96D is released from the groove 99A of the fixed piece 99, and the lock piece 96F is released from the fixed piece 13X. As a result, the drive unit 9 is unlocked.

  Further, referring to FIG. 3, a through hole 35M is formed in the lower portion of the trigger 35, and a fork claw 211 is fitted into the through hole 35M. The fork claw 211 is not shown in the figure, but is integrated with the base plate 13. Is formed. Therefore, when the trigger 35 moves forward, the fork claw 211 is detached from the through hole 35M, and when the trigger 35 is moved back to the retreat limit position, the fork claw 211 is fitted into the through hole 35M. It becomes locked. In this embodiment, when the locked state is reached, the fork claw 211 is fitted into the through hole 35M, the lock piece 96D is fitted into the groove 99A of the fixed piece 99, and the lock piece 96F is fitted into the fixed piece 13X. Locked at 3 points.

As shown in FIG. 10, the second lock mechanism 110 is located on the opposite side of the first lock mechanism 100 and is disposed in the drive unit 9.
That is, the second lock mechanism 110 includes a cam member 111 and a lock member 121. The cam member 111 is rotatably supported on the base plate 13 of the drive unit 9 by pins 112, and gears 111A and 111B are integrally formed at the base end and the free end, respectively. The base end gear 111 </ b> A meshes with the gear 113 formed on the swing plate 17 of the drive unit 9, and the free end gear 111 </ b> B meshes with the gear 121 </ b> A of the lock member 121.

The lock member 121 is rotatably supported on the base plate 13 by pins 122, and a free end 121 </ b> B projects from an opening 123 formed in the swing plate 17 of the drive unit 9.
In this state, the free end 121B protruding upward from the opening 123 is not shown, but the base end 121C that abuts the back surface of the upper chassis 7 and extends to the rear of the free end 121B is not shown. When the drive unit 9 comes into contact with the lower chassis 5 and is locked to the upper chassis 7 and the lower chassis 5, and the free end 121B and the base end 121C are in a face-down state (FIG. 11), the lock is released.

The locking operation or unlocking operation of the locking mechanism is performed in conjunction with the operations of the trigger 35 and the trigger cam 41 described above.
The first lock mechanism 100 and the second lock mechanism 110 are locked with a time lag and unlocked with a time lag. When unlocked, in the first lock mechanism 100, as shown in FIGS. 8 and 9, the lock piece 96D is not inserted into the groove 99A of the fixed piece 99, and in the second lock mechanism 110, FIG. As shown, the free end 121 </ b> B of the lock member 121 is bent and does not protrude from the opening 123 of the swing plate 17. In this case, the trigger 35 and the trigger cam 41 are at the forward limit position, and as described above, the swing plate 17 of the drive unit 9 clamps the disk, so that it is closed by the magnet and the spring force. Floating support is provided via the vibration isolating structure 11, and the disc can be reproduced by rotating the turntable 21.

  When the disc 24 is ejected, the motor 24 is rotated in the reverse direction, and the trigger 35 and the trigger cam 41 are moved backward (in the direction of arrow Y), the gear plate 92 having the gear 92G meshing with the rack gear 41R is moved to the pin 91. The lock plate 96 is rotated clockwise in the clockwise direction, and the lock plate 96 gradually moves to the right in FIG. When the retreat limit position is reached, as shown in FIG. 6, the lock piece 96D of the lock plate 96 is fitted into the groove 99A of the fixed piece 99, and the lock piece 96F is fitted to the fixed piece 13X. The fork claws 211 are fitted into the through-holes 35 </ b> M, and the first locking mechanism 100 functions, and the drive unit 9 is locked to the upper chassis 7 and the lower chassis 5.

  Further, when the trigger cam 41 is moved backward, the tip 17A of the swing plate 17 gradually opens from the state of FIG. 11 toward the state of FIG. In the process of opening, as shown in FIG. 10, the cam member 111 meshes with the gear 113 of the swing plate 17 and rotates in the direction of the arrow A. In conjunction with this, the lock member 121 is connected to the gear 111B and the gear. It rotates in the direction of arrow B through 121A, and its free end 121B protrudes from the opening 123 of the swing plate 17. Although not shown, the protruding free end 121B abuts the back surface of the upper chassis 7, and the base end 121C abuts the lower chassis 5, but the second lock mechanism 110 functions. Then, the drive unit 9 is locked to the upper chassis 7 and the lower chassis 5.

In this configuration, the trigger cam 41 can reciprocate in the front-rear direction of the drive unit 9, and the lock plate 96 interlocked with the reciprocation of the trigger cam 41 can reciprocate in the left-right direction of the drive unit 9. Even if a force acts in a direction in which 96D is caused to escape from the groove 99A of the fixed piece 99, the acting direction of the force is orthogonal to the operation direction of the trigger cam 41 and does not become a force for reciprocating the trigger cam 41.
Therefore, even if an unexpected force is applied from the groove 99A of the fixed piece 99 in the direction in which the lock piece 96D is withdrawn, the lock is not released, and the lock state of the drive unit 9 is sufficiently self-held.

  In addition, the drive mechanism including the trigger 35, the trigger cam 41, the gear wheel train 38, and the like are all arranged on one side of the drive unit 9, and the first lock mechanism 100 is arranged on the same side, so these are arranged on both sides. Space can be saved and the size of the disc player can be reduced as compared with conventional ones.

  As described above, even if the first lock mechanism 100 is arranged on one side, another second lock mechanism 110 is arranged on the opposite side of the drive unit 9, so that the lock state on both sides can be achieved with a simple configuration. And a perfect lock is obtained. Further, since the lock member 121 of the second lock mechanism 110 is raised and lowered in conjunction with the opening / closing operation of the swing plate 17, an extra actuator for raising and lowering this is unnecessary, and the second lock mechanism 121 can be configured with a simple configuration. The mechanism 110 can be operated.

  In this configuration, as shown in FIG. 1, a pair of gate members 59 that come in contact with the outer peripheral portion of the disk to be inserted and retract to the side of the insertion slot 23 are provided in the disk insertion slot 23. Yes. The gate member 59 is provided with a pair of turn plates 62 and 63 arranged substantially at the center with respect to the insertion port 23, and these turn plates 62 and 63 are arranged on the front outer surface of the upper chassis 7 as shown in FIG. Are connected via pins (support members) 64 and 65, respectively. The turn plates 62 and 63 are biased in the closing direction (in the direction of arrow A) by the springs 60 and 61, and a pair of gate pins 67 and 68 facing the insertion port 23 are attached to the turn plates 62 and 63. Yes.

  Further, slide holes 62A and 63A are formed in the base portions of the turn plates 62 and 63, and pins 71 and 72 that fit into the slide holes 62A and 63A are attached to the connecting plate 73, respectively. The bases of these turn plates 62 and 63 are connected by a connecting plate 73. The connecting plate 73 is formed with a pair of guide holes 74 and 75 extending in the disc insertion direction (in the direction of the arrow Z). The guide portions 76 and 77 fitted into the guide holes 74 and 75 are formed on the upper chassis 7. A part is cut and raised, raised upward, and then bent horizontally. The raised thin portions fit into the guide holes 74 and 75. Reference numeral 78 denotes a plate attached to the upper chassis 7, and this plate 78 functions as a stopper in the closing direction of the turn plates 62 and 63.

  When the disc is inserted into the insertion slot 23, the disc pushes the gate pins 67 and 68 sideways. For example, when the disc 100 having a large 12 cm diameter is inserted, as shown in FIG. 13, the outer peripheral portion 100A of the disc 100 pushes the pair of gate pins 67 and 68 to the side of the insertion slot 23, thereby turning the turn plates 62 and 63. Rotates in the direction of opening (direction of arrow B). Along with this rotation, the pins 71 and 72 move in the slide holes 62A and 63A, thereby interlocking with the swinging of the turn plates 62 and 63, and the connecting plate 73 along the guide portions 76 and 77. Reciprocate in the disc insertion direction (in the direction of arrow Z).

  FIG. 14 is a perspective view when a disc 200 having a small diameter of 8 cm is inserted. In this case, since the disc diameter is smaller than the width of the insertion port 23, there is a possibility that the disc is inserted biased to one end of the insertion port 23. For example, when the disk 200 is inserted in a biased manner toward one gate pin 67, the other gate pin 68 is hardly pushed away, and only one pin 67 is pushed away. In this case, only the turn plate 62 on the side of one gate pin 67 rotates in the opening direction (the direction of arrow B).

  In this configuration, when the other turn plate 63 is not opened and only the one turn plate 62 is opened, the connecting plate 73 is rotated only on the pin 71 side without rotating on the pin 72 side. In this case, the connecting plate 73 is inclined.

When the connection plate 73 is inclined, the guide portions 76 and 77 do not face the slide holes 62A and 63A. The guide portions 76 and 77 are caught by the hole walls of the guide holes 74 and 75, and the connection plate 73 However, it no longer moves in the insertion direction of the disk 200 (in the direction of the arrow Z), and therefore further rotation of the turn plates 62 and 63 is prevented, and the insertion of the disk is prevented.
This state is the same when the disc 200 is inserted with a bias toward the other gate pin 68. The guide holes 74 and 75 and the guide portions 76 and 77 fitted in the holes 74 and 75 constitute a locking means.

  That is, in this configuration, when the disc 200 is inserted at an end of the insertion port 23, the guide portions 76 and 77 are caught by the hole walls of the guide holes 74 and 75 to become resistance, and the connecting plate 73 is locked. . According to this, the insertion of the disc biased toward the end of the so-called insertion slot 23 is prohibited. Therefore, a conventional mechanism for guiding the disk sucked in a state of being close to one side to the center inside the main body becomes unnecessary, and the apparatus can be miniaturized correspondingly, particularly in the thickness direction of the apparatus. The dimensions can be reduced.

  FIG. 15 is a perspective view of the upper chassis 7 as viewed from the back side. The inner surface of the upper chassis 7 protrudes downward (on the side facing the loading roller 25) when the upper chassis 7 is assembled, and extends in two rows to guide the disk inserted into the insertion port 23 downward (or upward). Guide bars (guide mechanisms) 81 and 82 are provided.

  These guide bars 81 and 82 extend in parallel to each other in the lateral direction of the insertion port 23, and each gradually increases in height toward the end of the insertion port 23. The front guide bar 81 gradually increases the height of the protrusion 81A from the position m near the center, and the back guide bar 82 gradually increases the height of the protrusion 82A from the position n closer to the end. Make it bigger. A loading roller 25 is opposed to the pair of guide bars 81 and 82, and is sandwiched between the roller 25 and the guide bars 81 and 82 to load the disc.

  16 is a cross-sectional view when an 8 cm-diameter disc 200 is inserted, FIG. 17 is a perspective view, FIG. 18 is a cross-sectional view when a 12-cm diameter disc 100 is inserted, and FIG. 19 is a perspective view. is there.

  As shown in FIG. 16, when an 8 cm diameter disc 200 is inserted, the disc 200 inserted from the insertion slot 23 is placed between the loading roller 25 and the low protrusions 81A and 82A of the guide bars 81 and 82. It is sandwiched and loaded into the back of the main body 1 along the first loading path RK1 positioned at a high position inside the main body 1. A first disk contact portion 83 is located at the end of the first loading path RK1, and the disk 200 stops by contacting the first disk contact portion 83. At this stage, the disk 200 is As shown in FIG. 17, the claw portion 32 of the trigger plate 31 is pushed, and this is used as a trigger to execute the clamping operation of the disc 200 as described above.

  As shown in FIG. 18, when a disc 100 having a diameter of 12 cm is inserted, the disc 100 inserted from the insertion slot 23 is formed between the loading roller 25 and the protrusions 81A and 82A where the guide bars 81 and 82 are raised. It is sandwiched between and loaded into the back of the main body 1 along the second loading path RK2 located in the lower part inside the main body 1. As shown in FIG. 19, a guide bar 331 is formed on the outer periphery (right back in the drawing) of a 12 cm diameter disc 100 so as to be able to come into contact therewith. The guide bar 331 is rotatably supported by a pin 310 and is urged clockwise around the pin 310 via a spring 312. As shown in FIG. 17, a taper surface 313 is formed on the lower surface of the free end of the guide bar 331. When a 12 cm diameter disk 100 is inserted, the disk 100 is first moved along the taper surface 313. The tip 100A of the trigger plate 31 is directed downward, and the claw portions 32 of the trigger plate 31 are crossed. When the disk 100 further enters the back, the guide bar 331 rotates counterclockwise around the pin 310, and the guide bar 331 guides the outer periphery of the disk 100, and stable loading is executed. A second disk abutting portion 84 is located at the end of the second loading path RK2, and the disk 100 comes into contact with and stops at the second disk abutting portion 84. As shown in FIG. 19, 100 pushes the claw portion 33 of the trigger plate 31, and this is used as a trigger to execute the clamping operation of the disc 100 as described above. When this clamping is completed, the protrusion 314 on the lower surface of the guide bar 331 is fitted into a recess (not shown) on the swing plate 17 side, and the guide bar 331 is fixed away from the outer periphery of the disk 100. Therefore, the guide bar 331 does not come into contact with the disc 100 during performance.

  In this configuration, since different loading paths RK1 and RK2 are formed separately inside the main body 1, a complicated mechanism for holding discs having different diameters at the end of the loading path as in the prior art. There is no need to provide the device, and the device can be thinned. The present configuration can also be applied to, for example, a disc player that loads discs of different materials. In this case, if the loading path is devised according to the material, etc., a disc that is not damaged or the like is provided. .

1 is a perspective view showing an embodiment of a disc player according to the present invention. It is the perspective view which removed the upper chassis. It is a perspective view of a lower chassis. It is the perspective view of the left view which attached the drive unit to the lower chassis. It is the perspective view of the right view which attached the drive unit to the lower chassis. It is a top view which shows the locked state of a 1st locking mechanism. It is a perspective view which shows the locked state of a 1st locking mechanism. It is a top view which shows the lock release state of a 1st lock mechanism. It is a perspective view which shows the lock release state of a 1st lock mechanism. It is a perspective view which shows the locked state of a 2nd locking mechanism. It is a perspective view which shows the lock release state of a 2nd lock mechanism. It is a perspective view which shows a pair of gate member. It is a perspective view which shows the state which opened the gate member with the 12 cm disk. It is a perspective view which shows the state which opened the gate member with the 8 cm disc. It is the perspective view which looked at the upper chassis from the back side. It is sectional drawing at the time of inserting an 8 cm disc. It is a perspective view similarly. It is sectional drawing at the time of inserting a 12 cm disc. It is a perspective view similarly.

Explanation of symbols

1 Body 3 Chassis 5 Lower Chassis 7 Upper Chassis 9 Drive Unit 13 Base Plate 17 Swing Plate 23 Insertion Port 41 Trigger Cam 41R Rack Gear 92 Gear Plate 92G Gear 96 Lock Plate 96D Lock Piece 99 Fixed Piece 99A Groove 100 First Lock Mechanism 110 Second Lock Mechanism 111 Cam member 121 Lock member 121 Free end

Claims (2)

In a disk player provided with a lock mechanism for floatingly supporting the drive unit inside the chassis, loading and playing a disk to the drive unit, and at least when the disk is ejected or waiting for loading, the drive unit is released from the floating state and locked to the chassis.
The drive unit is composed of a base plate and a swing plate that holds the disk in cooperation with the base plate,
The locking mechanism comprises a first locking mechanism disposed on one side of the drive unit and a second locking mechanism disposed on the other side,
The second lock mechanism is composed of a cam member and a lock member, the cam member is rotatably supported on the base plate, and gears are integrally formed on the base end and the free end, respectively. The gear meshes with the gear formed on the swing plate, the free end gear meshes with the gear of the lock member, this lock member is rotatably supported by the base plate, and the free end is formed on the swing plate The free end protrudes from the opening, locks the free end against the back of the chassis and locks the free end in conjunction with the closing movement of the swing plate,
A drive mechanism for driving the first lock mechanism and the swing plate is provided on the one side of the drive unit,
A disc player, wherein the second lock mechanism is disposed between the base plate and the swing plate, and the second lock mechanism is driven via the swing plate driven by the drive mechanism .   2. The disc player according to claim 1, wherein the second lock mechanism is unlocked in conjunction with a closing operation of the swing plate.

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