JP2592082Y2 - Loading device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loading device used for loading and unloading a recording medium, such as a compact disk (CD) or a laser disk (LD), from a reproducing apparatus.

[0002]

2. Description of the Related Art In a loading device for a recording medium (hereinafter, referred to as a disc) such as a CD or LD, when a tray on which a disc is loaded is returned to the loading device, a clamping mechanism supports the disc. The clamping mechanism has a disk clamper rotatably supported by the lid of the apparatus, and a disk support for rotatably supporting the disk. When the tray stops at the disc playback position, the disc support is raised and the disc is lifted,
The two approach the disk clamper, and both clamp the disk. Then, after the disk supporting portion is lowered and the clamping is released, the tray can be moved forward. In this way, the disk support straddles the top and bottom of the tray,
The tray is provided with an opening through which the disc support passes so that the tray can be moved up and down.

[0003] Such vertical movement of the disk support portion is performed by lifting the base of the disk support portion with a cam or the like. In addition, since the vertical movement of the disk support is linked to the forward and backward movement of the tray as described above, the same loading motor is commonly used as the power source for the cam and the drive source for the tray.

[0004]

By the way, in the above arrangement, when the tray is stopped at the disk reproducing position, the disk support is penetrated from below to above the tray. . In this state, if the loading motor fails and stops working, you must manually operate the cam to lower the disk support to pull the tray forward to repair the parts under the tray. Must. However, in order to manually operate the cam, it is necessary to remove the entire loading device set in the reproducing device or to remove parts around the loading device, which is troublesome.

Further, even when the loading motor is operable, the power is usually turned off at the time of assembling or repairing the reproducing apparatus. In such a case, it is necessary to pull out the tray for some reason. As described above, it is necessary to manually operate the cam and turn on the power. Among them, the problem associated with manually operating the cam is as described above. Further, there is a problem that it is troublesome to turn on the power just to pull out the tray.

Therefore, the present invention solves the above-described problem, and moves the disk support up and down without taking the trouble of removing the loading device or turning on the power. It is an object of the present invention to provide a loading device capable of performing the following.

[0007]

In order to solve the above-mentioned problems, in the present invention, a tray for conveying a recording medium, a chassis for supporting the tray so as to be movable back and forth, and a chassis provided inside the chassis are provided. A disk support that rotatably supports the recording medium, a plate cam movably provided inside the chassis and having a cam groove formed thereon, and a cam groove of the plate cam fixed to the disk support. A cam follower inserted into the recording medium, and by moving the plate cam, raises the disc supporting portion when the tray comes to the reproducing position of the recording medium, and raises the disc supporting portion when the tray moves forward. In the loading device for lowering, it is characterized in that operating means for enabling the plate cam to be moved from outside the chassis is extended to the plate cam. It is an.

[0008]

As shown in FIG. 1, a disk reading section 28 is supported by a chassis 21 of a loading device 20 so as to be rotatable about a shaft 35. A motor 29 is mounted on the reading unit 28, and a disk support 30 is fixed to a rotation shaft 29 a of the motor 29. As shown in FIG.
A cam follower 36 is fixed to the front end of the reading unit 28. Since the cam follower 36 is fitted in the cam groove 81 of the plate cam 78 shown in FIG. 7, the disk support 30 moves up and down by the left and right movement of the plate cam 78. The plate cam 78 is provided with a rack 84, and the rack 84
, And is driven by a loading motor 58.

In preparation for the case where the loading motor 58 cannot be used due to a failure or the like, the plate cam 78 is provided with a long arm 82 as an operating means, and through holes 87 are formed at both ends of the arm 82. ing. Chassis 21 and tray 22
There is a gap S between them (see FIG. 6), and the end of the arm 82 is exposed to the outside from this gap S. Therefore arm 8
By hooking a hook or the like on the second through hole 87 and pulling in, or pushing in the end of the arm portion 82, the plate cam 78 is pulled.
Is forcibly moved left and right, so that the disk support 30 can be moved up and down.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the loading device according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a loading device 2 according to the present invention.
0 is shown. The loading device 20 is applied to a CD reproducing device. As shown in FIG. 2, a rectangular plate-like tray 22 is placed on a rectangular chassis 21. It is covered with a lid 23. The tray 22 is used to carry the CD 27 thereon.
It can be moved back and forth. Also,
At the front end of the loading device 20, a chassis 21 and a lid 2
An opening 24 through which the tray 22 passes is provided by 3.

At the rear end of the chassis 21, a reading section 28 for rotating the CD 27 and reading recorded information is arranged. A motor 29 is mounted in front of the reading unit 28, and a disk support 30 is fixed to a tip of a rotation shaft 29 a of the motor 29. A disk clamper 31 is rotatably attached to the lid 23. CD
The disk 27 is clamped by a disk support 30 and a disk clamper 31 and rotated by a motor 29.

As shown in FIGS. 2 and 3, a hole 33 is formed in the reading section 28, and a pickup 32 is disposed therein. The pickup 32 can move back and forth along a guide rod 34 attached to one side of the hole 33.

A shaft 35 protrudes from the rear end side of both sides of the reading unit 28. As shown in FIG.
Is attached to the chassis 21 so as to be able to rotate around the center. The rotation of the reading unit 28 causes the disk support unit 30 to move in the vertical direction, so that clamping and release of the CD 27 can be performed as described above. In order to rotate the reading unit 28, a columnar cam follower 36 is protruded from the front end surface of the reading unit 28. As will be described later, the cam follower 36 moves up and down while being guided by the cam surface of the plate cam 78 which moves left and right, whereby the reading unit 28 rotates.

As shown in FIG. 5, in the center of the tray 22, the clamping of the CD 27 and the pickup 3
2, a key-shaped cutout 37 is formed. On the upper surface of the tray 22, two mounting portions 38 and 40 for CDs having different sizes are formed concentrically.

Further, a concave portion 44 is provided at the bottom of the tray 22, and the left and right side portions 42 of the tray 22 are formed in a step shape. In the inside of the concave portion 44, linear projections 45, 46, 47, 48 are formed in parallel with each other over the entire length of the tray 22. As shown in FIG. 2, the front end of the chassis 21 has ridges 45, 46, 47,
Guides 50, 52, 54, 56 are provided at positions corresponding to 48. When the tray 22 slides back and forth,
The ridges 45, 46, 47, 48 are guides 50, 52, 5
Guided at 4,56.

The guides 50, 52, 54, 56 are formed to be slightly higher than the upper surface of the chassis 21. That is, as shown in FIG. 6, there is a slight gap S between the bottom surface of the tray 22 and the top surface of the chassis 21, and the tray 22 moves with the gap S between the chassis 21. Further, L-shaped guides 57 for regulating the vertical movement of the tray 22 are provided on the left and right sides of the chassis 21, so that both sides 42 of the tray 22 are pressed.

As shown in FIG. 2, a loading motor 58 for driving the tray 22 is provided on the chassis 21.
Is installed. The chassis 21 is provided with a gear train 60 for transmitting the rotation of the loading motor 58 to the tray 22 and the like. As shown in FIG. 7, in the gear train 60, the pulley 62 and the small gear 64 are coaxially arranged. Also, the large gear 6 is engaged with the small gear 64.
6 is provided, and a small gear 68 is provided coaxially with the large gear 66. Further, a large gear 70 is provided so as to mesh with the small gear 68, and a small gear 72 is provided coaxially with the large gear 70. And the loading motor 58
A small pulley 74 is fixed to the rotating shaft of the small pulley 7.
Since the belt 76 is wound around the pulley 4 and the pulley 62, the rotational force of the loading motor 58 is transmitted to the gear train 60.

The chassis 21 is provided with the plate cam 78 for rotating the reading section 28 as described above. As shown in FIG. 7, the plate cam 78 is formed by integrally forming a long arm 82 on a rectangular flat cam body 80. Cam groove 81 for fitting cam follower 36 (see FIG. 3)
There is. The cam groove 81 is formed by upper and lower horizontal portions and an inclined portion connecting the horizontal portions. As is clear from FIG. 7, when the plate cam 78 moves to the right, the reading unit 28 rotates upward,
When the plate cam 78 moves to the left, the reading unit 28 rotates downward. That is, the plate cam 78 and the cam follower 36 function as a vertical moving unit of the reading unit 28.

The arms 82 extend on both sides of the cam body 80. A rack 84 is provided on the arm 82, and the rack 84 meshes with the small gear 72. Therefore, the plate cam 78 moves right and left with the rotation of the loading motor 58.

As shown in FIG. 6, the arm 82 is arranged at the height of the gap S between the tray 22 and the chassis 21, and the end of the arm 82 is exposed from the gap S. At both ends of the arm 82, through holes 87 are formed.

Therefore, the loading motor 58
Even if the disk does not start due to a failure or the like, the end of the arm 82 is pushed in, pinched and pulled, or a hook or the like is hooked in the through hole 87 to forcibly move the plate cam 78 to the left or right to The support 30 can be moved up and down. That is, the arm 82 functions as an operation unit of the plate cam 78. If the plate cam 78 is moved to the left and the reading unit 28 is rotated downward, the disk support unit 30 is lowered, and the tray 22 can be pulled out without hitting it.

As shown in FIG. 7, a rack 86 is provided on the ridge 46 formed on the lower surface of the tray 22. The rack 86 meshes with the large gear 70 and the tray 22
Is moved back and forth. That is, the plate cam 78
And the tray 22 are driven by the same loading motor 58.

A projection 88 projects from the side of the arm 82. As shown in FIG. 5, a plate-like projection 90 is obliquely attached to the lower surface of the tray 22. When the plate cam 78 is moved leftward by the loading motor 58 from the state shown in FIG. 2, the projection 88 collides with the projection 90 as shown in FIG. Since the pressing surface of the projection 90 is inclined, when the projection 88 collides with the projection 90, the tray 22 moves slightly forward. Thus, the rack 86 is connected to the large gear 7.
0, and the tray 22 can be moved forward by the loading motor 58.

As shown in FIG. 9, a connecting portion 91 is attached to a lower portion of the chassis 21, and a switch 92 for stopping the loading motor 58 is fixed to the connecting portion 91. The switch 92 is a button 93
Is a push switch of the type having
Is pressed, the loading motor 58 stops.

An operation lever 94 for operating a switch 92 is pivotally supported by a shaft 95 on the upper part of the chassis 21. The operation lever 94 includes an operation portion 96 to which a pressing force is applied from the tray 22 and an operation portion 97 for pressing the button 93 of the switch 92, which are formed in an L-shape.

The operation section 96 is provided for the tray 22 as described later.
, And is formed substantially in the shape of a "H", and extends slightly upward from the shaft 95 forward. On the other hand, the action portion 97 extends downward from the shaft 95 toward the switch 92 side. The shaft 95 is disposed on a U-shaped groove-shaped support portion 98 formed on the chassis 21.
An inverted V-shaped retainer 99 attached to 1 prevents it from coming out upward. Therefore, lever 94
Is rotatable about an axis 95, and the operation unit 96
The shaft 95 is a fulcrum, and the action part 97 is an action point.

The operation lever 94 is provided on the ridge 4 of the tray 22.
8 is located immediately below. In order to push down the operation portion 96, a projection 100 projecting downward is provided at the rear end of the projection 48.
Are formed. The projection 100 has a horizontal portion having an appropriate length, and an inclined portion is provided before and after the horizontal portion. As will be described later, the lowermost end of the projection 100 is positioned on both sides 42
At a position higher than the lowermost end of. The upper end of the operation portion 96 of the operation lever 94 is located above the lowermost end of the projection 100.

Next, in the loading device 20, the tray 22 is used by using the loading motor 58.
Is moved to the forward movement limit, that is, to the position where the CD 27 can be taken out. First, the loading motor 58 shown in FIG. 7 is rotated clockwise from the state in which the tray 22 is stored in the chassis 21 as shown in FIG. Then, the plate cam 78 moves to the left. As a result, the reading unit 28 rotates downward, and the disk support unit 3
0 is lowered, the clamping of the CD 27 is released, and the entire disk support 30 is lower than the tray 22 as shown in FIG.

When the plate cam 78 moves to the left end as shown in FIG. 8, the projection 88 of the arm 82 pushes the projection 90 of the tray 22, so that the tray 22 moves slightly forward.
The rack 86 formed on the ridge 46 of the tray 22
Meshes with the large gear 70, and the tray 22 moves forward. Then, as shown in FIG. 9, when the tray 22 advances to the forward movement limit, the protrusion 100 pushes the operation portion 96 of the operation lever 94 downward, and the operation portion 97 of the operation lever 94 is thereby moved.
Presses the button 93 of the switch 92, so that the loading motor 58 stops. In this state, the CD 27 can be placed on the tray 22 or removed from the tray 22.

In order to remove the tray 22 from the chassis 21 for some reason, for example, when the loading motor 58 stops operating, the plate cam 78 is used as described above.
The left end of the arm 82 is pinched, or a hook or the like is hooked into the through hole 87 here to forcibly move the arm 82 to the left, or the right side of the arm 82 is left Push it towards the other side. Thus, the clamping of the CD 27 is released.
At this time, since the projection 90 of the tray 92 is pressed by the projection 88 of the arm 82, the tray 22 advances slightly from the stored state.

Thereafter, when the tray 22 is grasped by hand and forcibly pulled out, the operation lever 94 is pushed down by the projection 100 as shown in FIG. When the tray 22 is further pulled out, the operation unit 96 remains in contact with the lower end of the projection 100. Thereafter, when the operation unit 96 comes off the projection 100 of the tray 22, as shown in FIG. Of the operation unit 9
6 returns upward. At this time, the projection 100 only slides on the operation portion 96 of the operation lever 94. Therefore, the tray 22 is pulled out of the opening 24 without any obstruction.

When returning the tray 22 to the chassis 21,
The tray 22 may be inserted into the opening 24 and pushed. Also in this case, the operation lever 94 does not become an obstacle, and the tray 22 can be inserted smoothly. Since the disk support 30 has already been lowered, if the tray 22 is further pushed in thereafter, the CD 27 shown in FIG.
To the playback position.

After the tray 22 is once taken out,
Even if the disk support 30 has been raised for some reason such as a malfunction of the loading motor 58, the disk support 30 can be lowered by the same operation as described above. It is possible to store in.

[0035]

As described above, according to the present invention, when the tray for transporting the recording medium comes to the reproduction position of the recording medium by moving the plate cam, the disc supporting portion is raised and the tray is moved forward. In a loading device for lowering a disk support portion when moving, an operating means for enabling the plate cam to be moved from outside the chassis is extended to the plate cam.

Therefore, according to the present invention, when the driving means of the plate cam cannot be used, the loading device is detached from the recording medium reproducing device, or the power is turned on during the work of normally turning off the power. There is an effect that the operation of the plate cam is operated from the outside to lower the disk support portion so that the tray can be easily pulled out without any trouble.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a loading device 20 according to the present invention.

FIG. 2 is a plan view showing a state where a tray 22 of the loading device 20 is removed.

FIG. 3 is a perspective view illustrating a configuration of a reading unit 28 of the loading device 20.

FIG. 4 is a side sectional view of the loading device 20 showing a state in which the disk support 30 is disposed below the tray 22.

FIG. 5 is a perspective view of a tray 22.

FIG. 6 is a side view of the chassis 21 and the tray 22.

FIG. 7 is a perspective view showing a mechanism for rotating a reading unit up and down.

FIG. 8 is a plan view showing a state where the tray 22 of the loading device 20 has been removed and the plate cam 78 has been moved to the left.

FIG. 9 is a side sectional view showing a state in which the tray 22 of the loading device 20 is advanced and a switch 92 is operated.

FIG. 10 is a side sectional view showing a state where a tray 22 is removed.

[Explanation of symbols]

 REFERENCE SIGNS LIST 20 loading device 21 chassis 22 tray 27 CD 28 reading unit 30 disk support unit 36 cam follower 58 loading motor 78 plate cam 80 cam body 81 cam groove 82 arm unit 84 rack 87 through hole

Claims (1)

(57) [Scope of request for utility model registration] A tray for transporting a recording medium; a chassis for supporting the tray movably back and forth; a disk support provided inside the chassis for rotatably supporting the recording medium; A plate cam movably provided inside the chassis and having a cam groove formed thereon, and a cam follower fixed to the disk support portion and inserted into a cam groove of the plate cam. A loading device that raises the disk support when the tray comes to the recording medium playback position and lowers the disk support when the tray moves forward; moving the plate cam from outside the chassis; A loading device, wherein operating means for enabling the extension is provided on the plate cam.