JP2008226321A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk device which eliminates the need for a dedicated mechanism for preventing the double insertion of disks, and thereby is reduced in thickness. <P>SOLUTION: A loading roller 25 supported by a freely rockable support plate 27 is arranged at an insertion slot 23 of a main body 1. When a disk is pulled in from the insertion slot 23 toward a drive unit 9, the disk device is configured so as to rock the roller support plate 27 in interlock with the pull-in operation and separate the loading roller 25 from the drive unit 9. The disk device is provided with a shutter plate 80 for closing the insertion slot 23 in interlock with a rocking operation of the roller support plate 27. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a disc device 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).

In general, in a conventional disk device such as a CD or DVD player mounted on a vehicle, the disk is sucked from an insertion slot, and the disk drawn into the main body is clamped on a turntable and reproduced (for example, patents). Reference 1).
In this type, in order to prevent a plurality of discs from being drawn into the main body through the insertion slot, a mechanism for providing a double insertion prevention mechanism at the insertion slot has been proposed (see, for example, Patent Document 2). .
WO / 2001/091119 Japanese Utility Model Publication No. 02-42240

  However, in the conventional configuration, the double insertion prevention mechanism is provided in the insertion port separately from the mechanism for pulling the disk into the main body and the mechanism for reproducing, and this increases the size of the device, particularly in the thickness direction of the device. There was a problem that the size became large.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a disk device that eliminates the above-described problems of the prior art and eliminates the need for a dedicated mechanism for preventing the double insertion of a disk, thereby realizing a thinner device. There is.

  In the present invention, when a loading roller supported by a swingable roller support plate is disposed in an insertion port of a main body, and a disk is pulled in from the insertion port toward a drive unit, the roller is interlocked with the pulling operation. A structure is provided that swings a support plate to separate the loading roller from the drive unit, and further includes a shutter plate that closes the insertion port in conjunction with the swing operation of the roller support plate. .

  According to this configuration, since the shutter plate for closing the insertion port is provided in conjunction with the swinging operation of the roller support plate, the operation of separating the loading roller from the drive unit by swinging the roller support plate, and the shutter The operation of closing the insertion port of the plate to prevent double insertion of the disc can be performed simultaneously. This eliminates the need for a dedicated mechanism for preventing the double insertion of the disk, and as compared with the conventional one, the apparatus can be made smaller and the apparatus can be made thinner.

In this case, the shutter plate is rotatably provided on the front surface of the main body via a support member, and engages with a part of the roller support plate when the roller support plate swings. It is good also as a structure provided with the engagement piece which rotates the said shutter plate in the direction which closes the said insertion port.
The shutter plate may include a long hole that is slidable in the vertical direction via the support member. The shutter plate may be configured to close a substantially central portion of the insertion port.

  The shutter plate may be connected to a front end portion of the roller support plate, and when the roller support plate swings, the shutter plate may be slid in a direction to close the insertion port.

  In the present invention, since the shutter plate for closing the insertion port is provided in conjunction with the swinging operation of the roller support plate, the operation of separating the loading roller from the drive unit by swinging the roller support plate, and the shutter plate The operation of closing the insertion slot to prevent double insertion of the disc can be performed simultaneously. This eliminates the need for a dedicated mechanism for preventing the double insertion of the disk, and as compared with the conventional one, the apparatus can be made smaller and the apparatus can be made thinner.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an appearance of a disc player (disc device) 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 disc, which is not shown in FIG. A clamp mechanism for clamping the disc, a drive mechanism for driving the clamped disc, and the like are provided.

  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 as a clamp mechanism in which a clamp 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 clamp plate 17 that cooperates to clamp the disc. A rotating plate 19 is supported on the tip 17A of the clamp plate 17, and a turntable 21 including a magnet facing the rotating plate 19 is supported on the base plate 13. Then, as will be described later, when the disc is inserted and the clamp plate 17 is closed, the disc is rotatable by being clamped (clamped) by the rotary 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.
The roller support plate 27 includes a bent portion 27A formed by bending both ends upward, and a bearing portion 29 is formed on the rear end side of the bent portion 27A to rotatably support the drive shaft 25A of the loading roller 25. ing. A hinge pin 28 is provided on the front end side of the bent portion 27A, and the roller support plate 27 is swingably connected to the side plate of the lower chassis 5 through the hinge pin 28. Therefore, the loading roller 25 is configured to be able to be separated from and connected to the disk of the drive unit 9 by displacing its height position by swinging the roller support plate 27. The roller support plate 27 is urged by a spring (not shown) to lower the front end of the roller support plate 27 and lift the loading roller 25.
Further, at the front end portion of the roller support plate 27, two claw portions 91, 92 formed by bending a part of the roller support plate 27 upward and then bent horizontally are integrally formed. Yes. These claw portions 91 and 92 extend into the insertion opening 23 by the swinging of the roller support plate 27 when the disk is drawn into the drive unit 9 and clamped. In this configuration, the one claw portion 91 has a function of operating a shutter plate 80 described later.

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 in contact with a disk drawn into the main body 1 and clamps the disk to the drive unit 9. The trigger plate 31 is urged clockwise by a spring 31S, and two claw portions 32 and 33 bent inward of the drive unit 9 are integrally formed on one end 31A side thereof. . One claw portion (small diameter trigger portion) 32 can come into contact with a drawn 8 cm disc, and the other claw portion (large diameter trigger portion) 33 can come into contact with a drawn 12 cm disc.
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 counterclockwise and the trigger 35 moves forward. As shown in FIG. 2, the final gear 37 is connected to the motor 24 at the front portion 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 clamp 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 clamp plate 17 swings in the closing direction by a 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 clamp plate 17 and the turntable 21 is completed. At the same time, the drive unit 9 is completely floating supported via the three vibration-proof structures 11 by releasing the engagement between the part 17B of the clamp 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 clamp 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 clamp 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, and at the retreat limit position, the loading roller 25 is brought into contact with the lower surface of the disk by the swing 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 a mechanism not shown.

In this configuration, as shown in FIG. 1, a shutter plate 80 that opens and closes the insertion port 23 is provided on the right front surface of the main body 1. The shutter plate 80 is interlocked with the swinging motion of the roller support plate 27 and closes the insertion slot 23 to prevent double insertion of the disk when the disk is clamped to the drive unit 9.
One end 80A of the shutter plate 80 is rotatably attached to the lower chassis 5 via a support pin (support member) 81, and is urged by a spring 82 in the opening direction (arrow K1 direction). Yes. The shutter plate 80 is formed with a slide hole 80B extending in the vertical direction, and a guide portion 5B formed on the front surface of the lower chassis 5 is fitted into the slide hole 80B. When the shutter plate 80 rotates, the guide portion 5B moves in the slide hole 80B and guides the shutter plate 80. The other end 80 </ b> C of the shutter plate 80 extends to the center portion of the insertion slot 23 and is formed by being bent on an arc according to the shape of the lower chassis 5.
The shutter plate 80 includes an engagement piece 80D that is bent from the upper edge of the shutter plate 80 to the inside of the insertion port 23. The engagement piece 80D extends above the claw portion 91 of the roller support plate 27. When the roller support plate 27 swings, the engagement piece 80D engages with the claw portion 91 to rotate the shutter plate 80. Let

In this configuration, the shutter plate 80 is configured to be rotatable via the support pins 81 and is configured to be slidable in the vertical direction. Specifically, a long hole 80 </ b> E extending in the vertical direction is formed in the shutter plate 80, and the long hole 80 </ b> E is loosely fitted with the support pin 81. Therefore, when the roller support plate 27 swings and the claw portion 91 of the roller support plate 27 engages with the engagement piece 80D of the shutter plate 80, the support pin 81 of the shutter plate 80 has the long hole 80E. Slide upward until it contacts the lower end.
According to this, the shutter plate 80 rotates through the support pins 81 and slides in the vertical direction, so that the closing area of the insertion opening can be made larger than that in which the shutter plate is simply rotated. Thus, the double insertion of the disc into the insertion slot is prevented, and the insertion of foreign matter into the insertion slot is minimized.
Further, by sliding the shutter plate 80 in the vertical direction, the swing stroke of the roller support plate 27 can be suppressed, and the apparatus can be reduced in size accordingly, and the apparatus can be reduced in thickness.

FIG. 6 is a perspective view showing a state of the shutter plate 80 before the disk is drawn, and FIG. 7 is a perspective view showing a state of the shutter plate 80 after the disk is drawn. In FIG. 7, the disk is not shown for convenience of explanation.
When the disc is not drawn into the main body 1, the claw portions 91 and 92 are positioned below the lower surface of the insertion slot 23 as shown in FIG. 6. For this reason, the shutter plate 80 is in a position where the insertion port 23 is opened by the urging force of the spring 82, and when the disc is inserted into the insertion port 23, the claw portions 91 and 92 and the shutter plate 80 are connected to the disc. Insertion is not hindered and the recording surface of the disc is not damaged.

  On the other hand, when the disc is pulled into the main body 1, as shown in FIG. 7, when the trigger cam 41 moves forward (in the direction of the arrow X) and moves to the forward limit position, the drive shaft 25A of the loading roller 25 is driven. Moves to a lower position along the inclined groove 41B, and the roller support plate 27 swings. Accordingly, the claw portions 91 and 92 formed on the roller support plate 27 protrude above the lower surface of the insertion port 23. In this case, the claw portion 91 engages with the engagement piece 80D of the shutter plate 80 and pushes up the engagement piece 80D. As a result, the shutter plate 80 slides upward until the support pin 81 comes into contact with the lower end of the long hole 80E of the shutter plate 80 against the biasing force of the spring 82, and the support pin 81 is centered. It rotates in the direction (arrow K2 direction) which closes the insertion port 23.

In this configuration, the shutter support plate 27 is rotated in conjunction with the swinging operation of the roller support plate 27 and closes the insertion port 23. Therefore, the loading roller 25 is moved to the drive unit 9 by swinging the roller support plate 27. The operation of moving the shutter plate 80 away from the disk and the operation of preventing the double insertion of the disk by rotating the shutter plate 80 in the direction of closing the insertion slot 23 can be performed simultaneously. This eliminates the need for a dedicated mechanism for preventing the double insertion of the disk, and as compared with the conventional one, the apparatus can be made smaller and the apparatus can be made thinner.
In particular, when the shutter plate 80 is closed, the other end 80 </ b> C of the shutter plate 80 extends substantially in the center of the insertion slot 23, so that even the tip portion of the disk can be inserted into the insertion slot 23. Thus, double insertion of the disc can be surely prevented. For this reason, the leading end portion of the disc to be inserted and the outer peripheral portion of the already inserted disc come into contact with each other, and the recording surface of these discs is reliably prevented from being damaged.

Next, a mechanism for guiding the disk drawn into the main body 1 to the clamp position of the drive unit 9 will be described. FIG. 8 is a perspective view of the clamp plate as viewed from the lower surface, and FIG. 9 is a perspective view of the clamp plate as viewed from the upper surface.
As shown in FIG. 8, the clamp plate 17 is provided with a pair of guide arms 43 and 44 that contact the outer peripheral portion of the disk drawn into the main body 1 and guide the disk to the clamp position. The guide arms 43 and 44 are arranged so as to be substantially centered with respect to the rotary plate 19 at the tip of the clamp plate 17, and contact portions 43 </ b> A and 44 </ b> A that contact the disk are formed at the front ends of the guide arms 43 and 44. The Bearing portions 43B and 44B are formed at the rear ends of the guide arms 43 and 44, and these bearing portions 43B and 44B are loosely fitted to pins 45 and 46 extending downward from the clamp plate 17. The guide arms 43 and 44 are biased in the closing direction (direction of arrow A) by the springs 47 and 48. Further, as shown in FIG. 9, guide pins 43 </ b> C extending to the upper surface side of the clamp plate 17 are formed on the upper surfaces of the guide arms 43 and 44 through guide holes 49 and 50 (FIG. 8) formed in the clamp plate 17. , 44C are provided.

  In this configuration, as shown in FIG. 1, a turn plate 51 that abuts on the outer periphery of the disk to be inserted and retracts to the side of the insertion slot 23, and a slide plate 52 and a selector that are interlocked with the operation of the turn plate 51. Plate 53. The turn plate 51 and the slide plate 52 are disposed on the upper chassis 7, and the selector plate 53 is disposed on the clamp plate 17. The selector plate 53 is interlocked with the operation of the turn plate 51 when the disk is inserted, and engages or disengages with the guide pins 43C and 44C of the guide arms 43 and 44, thereby restricting the operation of the guide arms 43 and 44. Functions as a regulating member.

  The turn plate 51 is swingably connected to the upper surface of the left front portion of the upper chassis 7, which is the side opposite to the side on which the shutter plate 80 is disposed, via a pin 54, and is closed by a spring 55. Is being energized. A gate pin 56 facing the insertion port 23 is attached to the turn plate 51. Further, a substantially J-shaped guide hole 51A is formed at the base of the turn plate 51, and a pin 57 that fits into the guide hole 51A is attached to the slide plate 52. The slide plate 52 is formed with a pair of slide holes 52A and 52B extending in the disc insertion direction (the direction of the arrow Y), and a part of the upper chassis 7 is cut and raised in the slide holes 52A and 52B. The guide pieces 58 and 59 which are raised are fitted. The rear end 52 </ b> C of the slide plate 52 is folded forward and engaged with a connecting portion 53 </ b> A formed at one end of the selector plate 53.

As shown in FIG. 9, the selector plate 53 is pivotally connected to the substantially central upper surface of the clamp plate 17 via a pin 60 and is urged clockwise by a spring 61. The selector plate 53 has a pair of guide holes 53B and 53C formed on the left and right sides of the pin 61, and a slide hole formed at one end on the side of the connecting portion 53A for restricting the operating range of the selector plate 53. 53D is formed. Guide pieces 62 and 63 extending above the clamp plate 17 are fitted into the guide holes 53B and 53C, and a regulation piece 64 extending above the clamp plate 17 is fitted into the slide hole 53D. .
The selector plate 53 is formed with engaging grooves 53E and 53F that engage with the guide pins 43C and 44C of the guide arms 43 and 44 in an initial state in which no disc is inserted into the main body. By engaging the engagement grooves 53E and 53F with the guide pins 43C and 44C, the operation of the guide arms 43 and 44 is restricted. The engaging grooves 53E and 53F are open on the urging direction (clockwise) side of the clamp plate 17, and when the clamp plate 17 rotates counterclockwise, the guide pins 43C and 44C are engaged with the engaging grooves 53E. , 53F and the guide arms 43 and 44 can be operated.

When the disc is inserted into the insertion slot 23, the disc pushes the gate pin 56 of the turn plate 51 sideways. For example, when the disc 100 having a large 12 cm diameter is inserted, as shown in FIG. 10, the outer peripheral portion 100A of the disc 100 pushes the gate pin 56 to the side of the insertion port 23, and the turn plate 51 opens (indicated by the arrow D). Direction). Along with this rotation, the pin 57 moves in the guide hole 51 </ b> A, thereby interlocking with the swing of the turn plate 51, and the slide plate 52 moves along the guide pieces 58 and 59 in front of the main body 1 ( Move in the direction of arrow X).
As the slide plate 52 moves, the connecting portion 53A of the selector plate 53 engaged with the slide plate 52 is pulled forward, so that the selector plate 53 is counterclockwise (in the direction of arrow E) against the spring 61. ). By this rotation, the guide pins 43C and 44C of the guide arms 43 and 44 are disengaged from the engaging grooves 53E and 53F, so that the operation of the guide pins 43C and 44C becomes possible.
According to this, as shown in FIG. 11, when the outer peripheral portion 100A of the disk 100 abuts against the abutting portions 43A and 44A of the guide arms 43 and 44, the guide arms 43 and 44 gradually become lateral (arrows). The disc 100 is guided to the clamp position by the guide arms 43 and 44.

FIG. 12 is a perspective view when the 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 disc 200 is inserted while being biased toward the gate pin 56, the outer peripheral portion 200 </ b> A of the disc 200 pushes the gate pin 56 to the side of the insertion port 23, and the turn plate 51 opens (in the direction of arrow D). Move. Therefore, similarly to the 12 cm diameter disk 100, the selector plate 53 rotates in conjunction with the operation of the turn plate 51, whereby the guide pins 43C, 44C of the guide arms 43, 44 are engaged with the engaging grooves 53E, 53F. Therefore, the guide pins 43C and 44C can be operated. However, since the 8 cm diameter disk 200 has a smaller diameter than the 12 cm diameter disk, the turn plate 51 returns to the initial position by the urging force of the spring 55 until the 8 cm diameter disk 200 reaches the clamp position. In conjunction with the operation of the turn plate 51, the selector plate 53 also returns to the initial position, so that the guide pins 43C and 44C of the guide arms 43 and 44 engage with the engaging grooves 53E and 53F of the selector plate 53, respectively. The operations of the arms 43 and 44 are restricted.
According to this, as shown in FIG. 13, since the guide arms 43 and 44 do not operate from the initial position, the outer peripheral portion 200A of the disk 200 contacts the contact portions 43A and 44A of the guide arms 43 and 44. Thus, the disc 200 is guided to the clamp position.

Next, the retracting mechanism 240 that retracts the claw portion 32 of the trigger plate 31 from the loading path when a 12 cm diameter disk is inserted will be described. In this configuration, the retracting mechanism 240 includes the selector plate 53 and the clamp plate 17. The selector plate 53 functions as a restricting member for the guide arms 43 and 44 and also functions as a retracting mechanism for retracting the claw portion 32 of the trigger plate 31 from the loading path.
As described above, the selector plate 53 rotates around the pin 60 in conjunction with the operation of the turn plate 51. In this configuration, the selector plate 53 is integrally formed with a piece 53H extending from the rear end 53G along the extending direction of the selector plate 53, as shown in FIG. The trigger plate 31 is formed with an operating piece 31C extending forward from the front end of the trigger plate 31 so as to be positioned on the piece 53H of the selector plate 53.
Further, on the upper surface of the clamp plate 17, a convex portion 70 is formed by cutting and raising a part of the clamp plate 17 below the operation piece 31C. The convex portion 70 is inclined so as to rise from the rear to the front of the main body 1, and then the tip is formed substantially horizontally.

When a 12 cm diameter disk is inserted, as described above, the outer peripheral portion of the 12 cm diameter disk rotates in the direction in which the turn plate opens by pushing the gate pin to the side of the insertion port. And with this rotation, a slide plate moves to the front of a main body along a guide piece. As a result, as shown in FIG. 15, since the connecting portion 53A of the selector plate 53 engaged with the slide plate is pulled forward, the selector plate 53 is counterclockwise (arrow E direction) against the spring. To turn.
As the selector plate 53 rotates, the piece 53H of the selector plate 53 moves on the convex portion 70 of the clamp plate 17, so that the position of the piece 53H moves upward. According to this, as shown in FIG. 16, since the operating piece 31C of the trigger plate 31 extending on the piece 53H is lifted upward by the piece 53H, the claw portion 32 of the trigger plate 31 is removed from the loading path RK. Can be evacuated. Accordingly, the disk 100 having a diameter of 12 cm is conveyed along the loading path RK and is brought into contact with the claw portion 33 of the trigger plate 31 to be clamped.
In this case, by adjusting the thickness of the piece 53H of the selector plate 53, the stroke for retracting the claw portion 32 from the loading path RK can be adjusted. According to this, the claw portion 32 can be reliably retracted from the loading path RK.

  On the other hand, when an 8 cm diameter disk is inserted, as shown in FIG. 14, the selector plate 53 is in the initial position, so the piece 53H of the selector plate 53 moves on the convex portion 70 of the clamp plate 17. The claw portion 32 of the trigger plate 31 is not retracted from the loading path RK. Accordingly, as shown in FIG. 17, since the claw portion 32 extends in the loading path RK, the 8 cm diameter disc 200 is clamped by coming into contact with the claw portion 32.

  According to the present embodiment, when the loading roller 25 supported by the swingable roller support plate 27 is disposed in the insertion port 23 of the main body 1 and the disk is drawn from the insertion port 23 toward the drive unit 9, The roller support plate 27 is swung in conjunction with the pulling operation, and the loading roller 25 is separated from the drive unit 9, and the insertion port 23 is closed in conjunction with the rocking operation of the roller support plate 27. Since the shutter plate 80 is provided, the roller support plate 27 is swung to move the loading roller 25 away from the drive unit 9, and the shutter plate 80 is rotated in the direction to close the insertion slot 23. The operation of preventing double insertion can be performed simultaneously. This eliminates the need for a dedicated mechanism for preventing the double insertion of the disk, and as compared with the conventional one, the apparatus can be made smaller and the apparatus can be made thinner.

  Further, according to the present embodiment, the shutter plate 80 is rotatably provided on the front surface of the main body 1 via the support pins 81, and when the roller support plate 27 swings, Since the engagement piece 80D that engages with the claw portion 91 formed at the front end portion and rotates the shutter plate 80 in the direction of closing the insertion port 23 is provided, the shutter plate 80 is configured to be a roller support plate with a simple configuration. 27 can be interlocked with the swinging motion of 27.

Further, according to the present embodiment, since the shutter plate 80 includes the long hole 80E that can slide in the vertical direction via the support pin 81, the roller support plate 27 swings, and the claw portion of the roller support plate 27 When 91 is engaged with the engagement piece 80D of the shutter plate 80, the shutter plate 80 slides upward until the support pin 81 contacts the lower end of the long hole 80E. According to this, the shutter plate 80 rotates through the support pins 81 and slides in the vertical direction, so that the closing area of the insertion opening can be made larger than that in which the shutter plate is simply rotated. Thus, the double insertion of the disc into the insertion slot is prevented, and the insertion of foreign matter into the insertion slot is minimized.
Further, by sliding the shutter plate 80 in the vertical direction, the swing stroke of the roller support plate 27 can be suppressed, and the apparatus can be reduced in size accordingly, and the apparatus can be reduced in thickness.

  In addition, according to the present embodiment, the shutter plate 80 is configured such that the other end 80C of the shutter plate 80 closes the substantially central portion of the insertion port 23. It cannot be inserted into the opening 23, and double insertion of the disc can be reliably prevented. For this reason, it is reliably prevented that the leading end portion of the disc to be inserted contacts the outer peripheral portion of the already inserted disc and the recording surface of these discs is damaged.

In the present embodiment, the configuration in which the shutter plate 80 is rotatably provided on the front surface of the main body 1 via the support pins 81 has been described. However, the present invention is not limited to this. For example, as shown in FIG. 18, claw portions 91 and 92 formed at the front end portion of the roller support plate 27 are connected, and when the roller support plate 27 swings, the insertion port 23 can be slid in the closing direction. It is good also as a simple structure. In this configuration, the shutter plate 95 includes a base portion 95A that is bent in a substantially arc shape, and connecting portions 95B and 95C that are connected to both ends of the base portion 95A. These connecting portions 95B and 95C extend substantially parallel to the width direction of the insertion port 23, and connecting holes 96 and 97 connected to the claw portions 91 and 92 are formed at the respective ends.
The base portion 95A is disposed so as to close the substantially central portion of the insertion port 23, and a pair of slide holes 98 and 99 extending in the vertical direction are formed on the sides of the base portion 95A. In these slide holes 98 and 99, guide portions 5C and 5D formed on the front surface of the lower chassis 5 are fitted. When the shutter plate 95 slides in the vertical direction, the guide portions 5C and 5D move in the slide holes 98 and 99 to guide the shutter plate 95.

  FIG. 19 is a perspective view showing a closed state of a shutter plate 95 according to another embodiment. When the disc is not drawn into the main body 1, the claw portions 91 and 92 are positioned below the lower surface of the insertion slot 23 as shown in FIG. 19. For this reason, the shutter plate 95 is in a position to open the insertion slot 23. When inserting a disk into the insertion slot 23, the claw portions 91 and 92 and the shutter plate 95 obstruct the insertion of the disk, The recording surface of the disc is not damaged.

  On the other hand, when the disc is pulled into the main body 1, as shown in FIG. 18, when the trigger cam 41 moves forward (in the direction of the arrow X) and moves to the forward limit position, the drive shaft 25A of the loading roller 25 is driven. Moves to a lower position along the inclined groove 41B, and the roller support plate 27 swings. Accordingly, the claw portions 91 and 92 formed on the roller support plate 27 protrude above the lower surface of the insertion port 23. Thereby, the shutter plate 95 connected to the claw portions 91 and 92 slides in a direction (upward in the present configuration) to close the insertion port 23 while being guided by the guide portions 5C and 5D.

  Also in this configuration, since the shutter plate 95 that slides in conjunction with the swinging operation of the roller support plate 27 and closes the insertion port 23 is provided, the loading roller 25 is moved to the drive unit by swinging the roller support plate 27. 9 and the operation of sliding the shutter plate 95 in the direction of closing the insertion slot 23 to prevent double insertion of the disk can be performed simultaneously. This eliminates the need for a dedicated mechanism for preventing the double insertion of the disk, and as compared with the conventional one, the apparatus can be made smaller and the apparatus can be made thinner.

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 perspective view which shows the open state of a shutter plate. It is a perspective view which shows the closed state of a shutter plate. It is the perspective view which looked at the clamp plate from the lower surface. It is the perspective view which looked at the clamp plate from the upper surface. It is a perspective view showing operation of a turn plate and a selector plate when a 12 cm diameter disk is inserted. It is a figure which shows operation | movement of the guide arm at the time of inserting the 12-cm diameter disc. It is a perspective view which shows operation | movement of a turn plate and a selector plate at the time of inserting an 8 cm diameter disc. It is a figure which shows operation | movement of the guide arm at the time of inserting the 8 cm diameter disc. It is a perspective view which shows the arrangement | positioning relationship between a selector plate and a trigger plate. It is a perspective view which shows operation | movement of the trigger plate interlock | cooperated with operation | movement of a selector plate. FIG. 16 is a partially broken perspective view corresponding to FIG. 15. It is a partially broken perspective view corresponding to FIG. It is a perspective view which shows the open state of the shutter plate concerning another embodiment. It is a perspective view which shows the closed state of the shutter plate concerning another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 3 Chassis 5 Lower chassis 7 Upper chassis 9 Drive unit 13 Base plate 17 Clamp plate 21 Base plate 23 Insertion port 25 Loading roller 27 Roller support plate 31 Trigger plate 41 Trigger cam 80, 95 Shutter plate 80D Engagement piece 80E Long hole 81 Support pin (Support member)
91, 92 Claw portion 95B, 95C Connection portion 100 disc 200 disc

Claims (5)

  When a loading roller supported by a swingable roller support plate is disposed at the insertion port of the main body, and the disk is pulled in from the insertion port toward the drive unit, the roller support plate is swung in conjunction with the pulling operation. And a shutter plate that closes the insertion port in conjunction with a swinging motion of the roller support plate.   The shutter plate is rotatably provided on the front surface of the main body via a support member. When the roller support plate swings, the shutter plate engages with a part of the roller support plate to disengage the shutter plate. The disk device according to claim 1, further comprising an engaging piece that rotates in a direction to close the insertion port.   The disk apparatus according to claim 2, wherein the shutter plate includes a long hole that is slidable in the vertical direction via the support member.   4. The disk device according to claim 1, wherein the shutter plate closes a substantially central portion of the insertion port.   The shutter plate is connected to a front end portion of the roller support plate, and when the roller support plate swings, the shutter plate is slid in a direction to close the insertion port. Disk unit.

Images