JPH0124784Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a guide mechanism for guiding a tray of a compact disc player.

[Background technology]

In a compact disc player, a compact disc is placed on a tray and housed within the player body. As shown in FIG. 1, on the front side of the player body 1, a tray 3
A slot 4 is formed to serve as an entrance and exit. The tray 3 slides forward from this slot 4, and after the compact disk 5 is set, the tray 3
is housed within the player body 1. The sliding out of the tray 3 from the player body 1 and its subsequent storage are achieved by a guide mechanism interposed between the player body 1 and the tray 3. This guide mechanism consists of a rack fixed to the tray 3 and a pinion meshed with the rack, and the pinion is rotated by a motor provided inside the player body 1. That is, when the pinion is rotated by the motor, the rack is moved by the rotation of the pinion, and the tray 3 to which the rack is fixed is moved.

As described above, the conventional tray guide mechanism consists of a rack and a pinion, both of which are in mesh with each other.
Further, as shown in FIG. 1, the tray 3 pulled out from the player body 1 is in a state where it can be pushed by hand, etc., and it may be easily pushed.
If the pushing force was too strong, the rack would move faster than the pinion could rotate, often damaging the pinion or rack teeth.

[Disclosure of invention]

An object of the present invention is to provide a mechanism that eliminates the above-mentioned conventional drawbacks and can prevent damage to the constituent members of the guide mechanism when a large force is applied to the tray guide mechanism.

In order to achieve the above object, the present invention includes a rack fixed to the tray of a compact disc player, and a pinien that is meshed with the rack and whose rotation is controlled by a motor provided in the player body. An elastic material is interposed between the racks to press the rack toward the pinion, and the rack is configured to move toward the elastic material at least a distance equal to the total tooth length of the rack and pinion teeth.

Since the present invention is configured so that the entire tooth length of the rack and pinion teeth can be moved, the meshing between the rack and pinion can be released when a large force is applied to the fixed tray of the rack.
Therefore, damage to the rack and pinion teeth can be prevented, so even if the transfer tray is pushed by hand, the guide mechanism will not be damaged.
Very practical.

[Best form for implementing the idea]

Next, embodiments of the present invention will be described with reference to the drawings.

The guide mechanism 6 of the present invention is shown in FIG. 2 and below. FIG. 2 is a view of a portion of the tray 3 in FIG. 1 cut along the - line, and a guide mechanism 6 is constructed on one inner wall of the tray 3, which has a U-shaped cross section. Also,
A groove 31 having an L-shaped cross section is formed on the outer wall of the tray 3, and a similar groove 11 is formed on the player body 1 facing the same. A sliding member 12 is interposed therebetween, so that the tray 3 is configured to be slidable with respect to the player body 1. As shown in FIG. 3, which is a plan view, the guide mechanism 6 includes a support member 60 formed on the inner upper surface of the tray 3 in the direction of movement of the tray 3.
, a rack 61 fixed to the support member 60 at a predetermined interval T, and a pinion 62 meshed with the rack 61 and rotatably fixed to the player body 1. Rack 61 is
Bolts 63, 6 fixed to the ends of the support member 60
It is supported by 4. Further, vertically extending pins 65 are fixed to the back surface of the rack 61 at intervals, and an elastic member 66 such as a coil spring is attached to the pins 65. The elastic material 66 is located between the inner wall of the tray 3 and the back surface of the rack 61.
1 is pressed all the time. Therefore,
The rack 61 supported by the bolts 63 and 64 is pressed against the head side of the bolts 63 and 64 by the pressing force of the elastic member 66, and the support member 60 and the rack 6
1, a spacing T is formed between the two. Also easy 61
The pinion 62 is meshed with a gear 68 that is directly connected to a motor 67 provided inside the player main body 1, and is rotated by the operation of the motor 67. Then, the rack 61 is moved by the rotated pinion 62, and the tray 3 is slid out and stored.

In this way, the pinion 62 is engaged with the rack 61, and for example, when a large force is applied to the tray 3, the engagement between the rack 61 and the pinion 62 is released, and the teeth of the rack 61 or the pinion 62 are prevented from being damaged. It is now possible to prevent it. To be more specific, when a large force is applied to the tray 3, this force causes the tray 3 to be moved with an unnecessarily large kinetic force, that is, the tray 3 is moved by an amount faster than the rotational speed of the pinion 62 meshed with the rack 61. The rack 61 will be moved, and the rack 61 and pinion 6 will be moved.
It puts a big burden on the teeth with 2. Here, if the pinion 62 is fixed to the player body 1 side and the corresponding rack 61 is also fixed in the same way, one or both of them will be damaged. However, the rack 61 is
If a force greater than the pressing force of the elastic member 66 pressing the rack 61 is generated, the rack 61 can be moved by the distance T.

As shown in Fig. 4, the interval T is at least the same length as the total tooth height t (from the root to the tip) of the teeth of the rack 61 or pinion 62, and The tooth depth t is t=2.25m (m is the rack and pinion module). Therefore, the distance T is T≧2.25m.

Therefore, when a large force is applied to the tray 3, the rack 61 can move at least by the full tooth length of the engaged rack 61 and pinion 62, and the engagement between the rack 61 and pinion 62 can be released. .

In this way, when a large force is applied to the tray 3 and a large load is applied between the rack 61 and the pinion 62, one of the teeth of the rack 61 and pinion 62 rides on the other, causing the rack 61 to move within the range of the interval T. Then, the meshing between the rack 61 and the pinion 62 is released. When the force applied to the tray 3 is removed, the rack 61 is pushed by the pressing force of the elastic member 66, and the rack 61 and pinion 62 are meshed again.

In the above embodiment, the rack is pressed by a coil spring, but the material pressing the rack may be rubber or the like, and it is sufficient if an elastic material is interposed between the tray and the rack. It is. Further, other configurations are not limited to the above embodiments, and may be modified without departing from the gist of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the compact disc player, Fig. 2 is a sectional view taken along the line shown in Fig. 1, Fig. 3 is a plan view of the guide mechanism, and Fig. 4 is the rack, teeth of the pinion, and the spacing between the rack and the support member. FIG. DESCRIPTION OF SYMBOLS 1... Player body, 3... Tray, 6... Guide mechanism, 61... Rack, 62... Pinion, 66... Elastic material, 67... Motor.

Claims (1)

[Claims for Utility Model Registration] A guide mechanism provided between a player body of a compact disc player and a tray slidably attached to the player body, comprising: a rack fixed to the tray; a pinion that is meshed with the player and whose rotation is controlled by a motor provided in the player body, an elastic material is interposed between the tray and the rack to press the rack toward the pinion, and the rack is on the elastic material side. A guide mechanism for a tray of a compact disc player, characterized in that it is configured to be able to move at least the full tooth depth (length from the tooth base to the tooth tip) of the rack and pinion teeth.