JP2007242102A - Slot loading mechanism of disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slot loading mechanism of a disk device which has a lever 5 for detecting a disk and is prevented from undergoing deterioration in disk reading performance due to vibration. <P>SOLUTION: The slot loading mechanism is provided in which a shaft 5a extended to a disk 14 insertion path is erected, a pair of levers turned during ejection are supported in a freely turnable manner by a reproducing part chassis 2, and a feeding roller 10 is provided which is arranged between the pair of levers 5 and the disk insertion path and changes in positions between a position where the roller contacts with the disk and a position where it is separated from the disk, and is rotationally driven during insertion and ejection of the disk. In the slot loading mechanism, the feeding roller 10 is separated from the disk and is brought into press contact with the pair of levers 5 at disk clamp at which insertion of the disk is finished. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a slot loading mechanism of a disk device.

  A slot loading mechanism of an in-vehicle disc player disclosed in Japanese Patent Application Laid-Open No. 10-116459 will be described with reference to FIGS. FIG. 3 is a plan view showing the slot loading mechanism, and FIG. 4 is a front view showing the slot loading mechanism. 1 shown in the figure is a main body chassis which supports the entire apparatus. The reproducing unit chassis 2 is supported in a floating state by the main body chassis 1 via dampers 11, 11,... And supports a disk motor, a turntable for reproducing a disk, and an optical pickup. The reproducing unit chassis 2 supports levers 4 and 5, connecting members 6 and 6, and a microswitch operating member 12 which are disk position detecting means of this mechanism.

  The feed roller 10 is brought into pressure contact with the disk and is rotationally driven by a drive mechanism (not shown) to load and eject the disk. The feed roller 10 is retracted to a position away from the disk during disk reproduction.

  The lever 4 is rotatably supported by the reproducing unit chassis 2 and has a shaft 4a extending up to the disk moving path. One end of a connecting member 6 is rotatably connected to the lever 4. The lever 5 is rotatably supported by the reproducing unit chassis 2 and has a shaft 5a extending up to the disk moving path. One end of a connecting member 6 is rotatably connected to the lever 5.

  As shown in detail in FIGS. 6 and 7, the other ends of the connecting members 6, 6 are connected to each other by a shaft 12 a of the microswitch operating member 12 so as to be rotatable. The shaft 12 a and the shaft 12 b of the microswitch operating member 12 are inserted through the guide groove 2 a of the reproducing unit chassis 2. Recesses 2b and 2b are formed on both edges of the guide groove 2a. Since the shaft 12a of the microswitch operating member 12 is guided by the guide groove 2a, the levers 4 and 5 rotate in synchronization.

  Microswitches 7 and 8 are fixed to a printed circuit board 3 that controls the operation of the apparatus. The microswitch 7 constitutes the first detection means of this mechanism, and the microswitch 8 constitutes the second detection means of this mechanism. A tension coil spring 9 hung between the reproducing unit chassis 2 and the microswitch operating member 12 urges the microswitch operating member 12 in the arrow direction (disc loading direction) shown in FIG. When there is no disk, the microswitch operating member 12 is in a position to operate the microswitch 7.

  As shown in FIG. 5, when the 8 cm CD 13 or 12 cm CD 14 is inserted to the loading start position, the levers 4 and 5 are rotated clockwise and counterclockwise, respectively. As shown in detail in FIG. Moves in the disc eject direction, and the microswitch 7 is turned off to detect the disc loading start position. Then, the feed roller is driven to feed the disc in the loading direction.

  When the 8 cm CD is sent, the micro switch 8 is not operated even at the maximum rotation position of the lever 4 as shown in FIG. When the 8 cm CD is inserted by being shifted to one side, as shown in FIG. 9, the shaft 12a enters the recess 2b provided in the guide groove 2a, so that the levers 4 and 5 are not rotated. Be guided to. When the 8 cm CD moves to the center position, it is fed to the reproduction position by the feed roller.

  When sending 12 cm CD, the microswitch 8 is operated at the maximum rotation position of the lever 4 as shown in FIG. By actuating the microswitch 8, 8 cm CD and 12 CD are identified, and the feeding roller is driven as much as necessary to feed the respective discs to the reproduction position. As described above, when the lever 4 or 5 is pressed by the 8 cm CD, the 8 cm CD is guided to the center by the levers 4 and 5 due to the action of the recess 2b. It is never mistaken for 12 cm CD.

When ejecting an 8 cm CD, the levers 4 and 5 are once rotated and then returned to their original positions, and the micro switch 7 is turned on to detect the eject stop position. When ejecting a 12 cm CD, the levers 4 and 5 are rotated, the micro switch 8 is actuated, and then returned to the original position, and the micro switch 8 is turned off as shown in FIG. . In this way, it is possible to provide a disk position detecting means that is free from malfunction and inexpensive to manufacture.
JP-A-10-116459, paragraphs 0012 to 0021, FIGS. 1 to 10

  According to the slot loading mechanism of an in-vehicle disc player disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 10-116459, it is possible to provide a disc position detecting means that can manufacture 8 cmCD and 12 cmCD at low cost.

  However, between the shaft that rotatably supports the feed roller 10 and the levers 4 and 5 and the bearing, a clearance that allows expansion and contraction due to a temperature change and a clearance that allows a dimensional tolerance in manufacturing is necessary. Requires a clearance between a shaft for rotatably connecting the connecting members 6 and 6 and the guide groove. In addition, when a shaft or a guide groove for guiding the rotation of the levers 4 and 5 to Smooth is provided, a clearance is required between them.

  When the device vibrates like an in-vehicle device or when the disk rotates at a high speed and the device vibrates slightly, when the shaft and the bearing or the shaft and the guide groove collide for the above-mentioned clearance, Impact sound and impact are generated. This shock is transmitted to the optical pickup via the reproducing unit chassis 2 and a sound skip occurs, which has a problem of adversely affecting the disk reading performance.

  The present invention has been made in view of the above-described points, and an object of the present invention is to provide a disk device having a lever for detecting a disk and preventing deterioration of disk reading performance due to vibration. It is to provide a slot loading mechanism.

  In the slot loading mechanism of the disk apparatus according to the present invention, a pair of levers that are erected on a shaft extending in the disk insertion path and that rotate when the disk is inserted and ejected are rotatably supported by the reproducing unit chassis. In a slot loading mechanism provided with a feed roller that is disposed between the disk insertion path and a position that contacts the disk and a position that moves away from the disk and that is rotated when the disk is inserted and ejected. When the disc is finished, the feed roller is separated from the disc and is pressed against the pair of levers.

  Further, in the slot loading mechanism of the disk apparatus according to the present invention, a pair of levers that are erected on a shaft extending in the disk insertion path and are rotated when the disk is inserted and ejected are rotatably supported by the reproducing unit chassis. Connecting members are rotatably connected to the levers, the connecting members are rotatably connected by shafts, and the shafts are guided and moved by guide grooves provided in the reproducing unit chassis, A feed roller that is disposed between a pair of levers and the disc insertion path and changes a position between a position in contact with the disc and a position away from the disc, and is rotationally driven when the disc is inserted and ejected; In the slot loading mechanism of the disk device, which recognizes the size of the disk to be inserted by the difference in the maximum rotation angle when the lever is inserted, the disk insertion The feed roller at the end disk clamp is that configured to be pressed against the at least one of said pair of levers and said coupling member away from the disk.

  Further, in the slot loading mechanism of each disk device, the pair of levers are provided with ribs pressed against the feed roller.

  Further, in the slot loading mechanism of the disk device, the pair of levers are bent upwardly convex, and the vicinity of the top convex portion of the pair of levers is pressed against the feed roller by the feed roller. The slot loading mechanism according to claim 1 or 2.

  A slot loading mechanism for each of the disk devices is provided in the in-vehicle disk device in which the pair of levers or the connecting member and the feed roller are supported by the reproducing unit chassis supported in a floating state by the main body chassis via the elastic body. It has been applied.

  According to the slot loading mechanism of the disk device of the present invention, when the disk is played, rattling of the disk feed roller and the lever for detecting the disk is suppressed, vibration noise is reduced, vibration sound skipping performance is improved, and parts caused by vibration are Reduction of wear is achieved.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1A is a side view showing a part of a slot loading mechanism of an in-vehicle disk device according to a first embodiment of the present invention as seen through a part thereof, and FIG. 1B shows another state of the part. It is a side view which sees through a part member transparently.

  The feed roller support lever 20 shown in FIGS. 1 (a) and 1 (b) is supported by the reproducing unit chassis 2 so as to be rotatable around a shaft 2d. The drive mechanism not shown in FIG. It is rotated between the position shown and the position shown in FIG. The lever 5 is rotatably supported on a shaft 2c erected on the reproducing unit chassis 2.

  FIG. 1A shows a disk loading state or a disk unloading state. At this time, the feed roller 10 supported by the roller support lever 20 and the disk guide 21 supported by the reproducing unit chassis 2 hold the disk 14. The disk 14 is fed in the insertion direction or the ejection direction by the rotation of the feed roller 10.

  FIG. 1B shows a disc clamped state where the disc loading is completed, that is, a state where the disc is held by a turntable supported by the reproducing unit chassis 2 and a clamper. In this state, the disc is rotated and the reproducing unit chassis is rotated. 2 is reproduced by an optical pickup supported by 2.

  In this state, the disk 14 is slightly moved down and separated from the disk guide 21, and the feed roller 10 is moved down and the feed roller 10 is provided with a rib 5 b provided on the lever 5 and a similar rib provided on the lever 4. Press contact. In this disc clamp state, the disc insertion port opening / closing door 20a provided on the roller support lever 20 closes the disc insertion port.

  This embodiment differs from the in-vehicle disc player shown in FIGS. 3 to 12 only in that the levers 4 and 5 are provided with ribs that come into pressure contact with the feed roller 10, and other configurations are shown in FIGS. 3 to 12. This is the same as the conventional in-vehicle disc player. In the conventional in-vehicle disc player, the feed roller 10 and the levers 4 and 5 are separated in the disc clamp state.

  As described above, in the slot loading mechanism of the embodiment, in the disc clamp state where the disc is reproduced, the feed roller 10 and the levers 4 and 5 are forced at positions other than the rotating shaft by the elasticity of the feed roller having elasticity such as rubber. As a result, play does not occur in the feed roller 10 and the levers 4 and 5, and an impact due to vibration is prevented.

  In the in-vehicle disk device in which the reproducing unit chassis is supported by the main body chassis in a floating state via an elastic member, vibration is easily applied to the feed roller 10 and the levers 4 and 5, and the impact is optically picked up by the reproducing unit chassis. In particular, the effect of suppressing the rattling of the levers 4 and 5 by the elasticity of the feed roller is particularly great. The feed roller may be pressed against the levers 4 and 5 and the connecting members 6 and 6 or may be pressed only against the connecting members 6 and 6.

  In the first embodiment, since the feed roller 10 is pressed against the ribs provided on the levers 4 and 5, the contact pressure between the feed roller 10 and the levers 4 and 5 can be easily set by arbitrarily setting the shape and dimensions of the ribs. Can be set optimally.

  The first embodiment is configured as described above, but the invention is not limited to this. For example, the feed roller may be pressed against the upper surface of the lever without providing a rib on the lever. Further, the present invention can also be applied to a lever for detecting a disk that is not provided with a connecting member.

  FIG. 2 (a) is a side view showing a part of a slot loading mechanism of a vehicle-mounted disk device according to a second embodiment of the present invention, with a perspective view of a part thereof, and FIG. It is a side view seeing through a member.

  In this example, the pair of levers 5 are bent upward and the feed roller 10 presses the vicinity of the top convex portion of the lever 5 in the disk clamp state against the feed roller 10. Other configurations are the same as those of the first embodiment.

  FIG. 2A shows a disk loading state or a disk unloading state. At this time, the feed roller 10 supported by the roller support lever 20 and the disk guide 21 supported by the reproducing unit chassis 2 hold the disk 14. The disk 14 is fed in the insertion direction or the ejection direction by the rotation of the feed roller 10.

  FIG. 2B shows a disc clamped state where the disc loading is completed, that is, a state where the disc is held by a turntable supported by the reproducing unit chassis 2 and a clamper. In this state, the disc is rotated and the reproducing unit chassis is rotated. 2 is reproduced by an optical pickup supported by 2. In this state, the vicinity of the top convex portion of the lever 5 is pressed against the feed roller 10.

  In this example, since the lever 5 is pressed against the feed roller 10 and bent, the tip of the lever 5 is strongly pressed against the reproducing unit chassis, and the lever 5 is firmly fixed to the reproducing unit chassis.

FIG. 1 (a) is a side view showing a part of a slot loading mechanism of a vehicle-mounted disk device according to Embodiment 1 of the present invention as seen through a part thereof, and FIG. 1 (b) shows another state of the part. It is a side view seeing through a member. FIG. 2 (a) is a side view showing a part of a slot loading mechanism of a vehicle-mounted disk device according to a second embodiment of the present invention, with a perspective view of a part thereof, and FIG. 2 (b) shows another state of the part. It is a side view seeing through a member. It is a top view which shows the example of the slot loading mechanism of the conventional vehicle-mounted disc player. It is a front view which shows the slot loading mechanism. It is a top view for demonstrating the effect | action of the slot loading mechanism. FIG. 6 is a partially enlarged view of FIG. 5. It is a front view of the part shown in FIG. It is a top view for demonstrating the effect | action of the slot loading mechanism. FIG. 9 is a partially enlarged view of FIG. 8. It is a top view for demonstrating the effect | action of the slot loading mechanism. It is a top view for demonstrating the effect | action of the slot loading mechanism. FIG. 12 is a partially enlarged view of FIG. 11.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body chassis 2 Reproduction | regeneration part chassis, 2a Guide groove, 2b Depression, 2c, 2d axis | shaft 3 Printed circuit board 4 Lever 5 Lever, 5b Rib 6 Connecting member 7 Micro switch 8 Micro switch 9 Pulling coil spring 10 Feeding roller 11 Damper 12 Micro switch Actuating member, 12a axis, 12b axis 13 8cmCD
14 12cm CD
20 Feed roller support lever, 20a Disc insertion slot opening / closing door 21 Disc guide

Claims (5)

A pair of levers that are erected on a shaft extending in the disc insertion path and are pivotally supported by the reproducing unit chassis when the disc is inserted and ejected are rotatably supported by the reproducing unit chassis, and are disposed between the pair of levers and the disc insertion path. In a slot loading mechanism having a feed roller that changes its position between a position in contact with the disk and a position away from the disk and that is rotationally driven when the disk is inserted and ejected, the feed roller is removed from the disk when the disk is clamped after the disk is inserted. A slot loading mechanism of a disk device configured to be pressed against the pair of levers. A pair of levers that are erected on the disk insertion path and rotate when the disk is inserted and ejected are rotatably supported by the reproducing unit chassis, and a connecting member is rotatably connected to each of the pair of levers. The connecting members are rotatably connected to each other by a shaft, the shaft is guided by a guide groove provided in the reproducing unit chassis, and is disposed between the pair of levers and the disc insertion path. And a feed roller that is rotated between the position in contact with the disk and the position away from the disk and that is rotationally driven when the disk is inserted and ejected. In the slot loading mechanism of the disk device for recognizing the size of the disk to be inserted, the feed roller is moved from the disk at the time of disk clamping after the disk insertion is completed. Slot loading mechanism configured disk device as will be pressed against the at least one of said pair of levers and said coupling member. The slot loading mechanism according to claim 1 or 2, wherein a rib pressed against the feed roller is provided on the pair of levers. 3. The slot loading mechanism according to claim 1, wherein the pair of levers are bent in an upward convex shape, and the vicinity of the top convex portion of the pair of levers in the upward convex direction is pressed against the feed roller by the feed roller. 5. The in-vehicle disk device according to claim 1, wherein the pair of levers or the connecting member and the feed roller are supported by a reproducing unit chassis supported in a floating state via an elastic body on a main body chassis. The slot loading mechanism described in 1.

Images