JPH0454596Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention is a disk/package suitable for shipping packaging.
Regarding the player.

[Conventional technology]

The conventionally known disk player is
When loading a disk on which information is recorded, the container loaded with the disk is moved up and down. Further, a chassis equipped with a pickup and a spindle motor, a so-called mechanical chassis, is attached to the casing forming the player body. This mechanical chassis is provided with a mechanism for loading and clamping the disk, and the disk loaded in the container is moved and placed in a clamped state. More specifically, when a disc loaded in a container is sent into a player together with a carry and locked, a rack driven by a motor moves and a container cam built into the inside of the carry is pulled. , the disk is lowered with the container by the container cam and attached to the spindle motor, and then the clamper is lowered to clamp the disk. The operation of taking out a disk is the reverse of the above-mentioned loading process, and loading or unloading of a disk is detected by whether or not the rack presses a micro switch. In the above-mentioned disk player, the motor and rack necessary for loading are attached to the sub-chassis, and the container cam, container, etc. are attached to the carry that reciprocates on the sub-chassis, so the overall mechanism is Difficult to maintain accuracy. In addition, large exterior parts for the carrier and container are required, which increases costs. In order to solve these problems, the present applicant has proposed disk players shown in FIGS. 3 to 9. That is, at one end of a base 11 constituting the main body of the disc player, a holder 12, which serves as a pivot point for a mechanical chassis 20, is erected at an appropriate interval. One end of a mechanical chassis 20 is rotatably attached to the top end of the holder 12 via a pivot 21 . Disposed above the mechanical chassis 20 are a disk information reading mechanism such as an optical pickup (not shown) and a moving mechanism for moving the optical pickup in the radial direction of the disk. On the free end (rotating end) side of the mechanical chassis 20,
A spindle motor 22 for rotating the disk D is mounted. A table 23 on which the disk D is placed is attached to the spindle 22a. An elevating arm 24 having a long hole 24a protrudes from the rotation end side of the mechanical chassis 20. When the elongated hole 24a engages with a guide pin 39 of the elevating mechanism 30, the elevating arm 24 rotates the elevating mechanism 30. It rotates in the vertical direction by the driving force as described later. Lifting mechanism 30 installed on the base 11
The output of the loading motor 31 is
a and the belt 32 to the input pulley 33a of the worm 33. A worm wheel 34 having a rotation axis perpendicular to the horizontal plane is engaged with the worm 33. A cylindrical cam 35 having a cam groove 35a on the circumferential surface near the upper end is provided at the center of the worm wheel 34. A hollow post 36 whose base end is fixed to the base 11 is fitted into the center space of the cylindrical cam 35 . A vertical groove 36a is formed in the hollow post 36. A hollow sleeve 37a to which a pin 38 is fixed is fitted into the hollow post 36.
By inserting the pin 38 into the vertical groove 36a of the hollow post 36, the hollow sleeve 37a can move up and down with respect to the hollow post 36. A lifting shaft 37 having a circular hole 37c is fitted into the hollow sleeve 37a. The pin 38 described above is inserted into the circular hole 37c, thereby allowing the elevating shaft 37 to move up and down appropriately within the hollow sleeve 37a. The lifting shaft 37 also has a compression spring 3 fitted in a hollow sleeve 37a.
7b. As a result, the overstroke, which will be described later, is reduced by the lifting shaft 37 against the biasing force of the compression spring 37b.
is absorbed by being slightly pressed down inside the hollow sleeve 37a. The above-mentioned guide pin 39 is provided protruding from the side surface of the upper end of the lift shaft 37 . A clamper arm 41 is rotatably attached to a pivot point of the mechanical chassis 20. When clamping disk D, clamper arm 41
and the disk D by the rotation of the mechanical chassis 20.
is held between the clamper 42 and the table 23. In this case, the rotational movement of the mechanical chassis 20 is performed by the lifting mechanism 30. That is, the output of the loading motor 31 causes the worm 3 to
When the worm wheel 3 rotates, the worm wheel 34 meshing with the worm wheel 34 is driven, and the cylindrical cam 35 rotates. The rotation of the cylindrical cam 35 causes the pin 38 to move into the cam groove 3.
5a, the pin 38 rises along the vertical groove 36a of the hollow post 36. As the pin 38 rises, the hollow sleeve 37a rises, and the elevating shaft 37 rises.
Lifting arm 24 engaged with guide pin 39
is pushed upward. As the lifting arm 24 rises, the mechanical chassis 2
0 moves to a state parallel to the base 11, this state is detected by a micro switch or the like, and the operation of the elevating mechanism 30 is stopped. At this time, the table 23 relative to the clamper 42
The overstroke of the pressing force of compression spring 3
This is absorbed by pushing down the elevating shaft 37 against the urging force of 7b. Note that unloading of the disk D is performed by driving the loading motor 31 in the opposite direction to that described above. Further, during shipping and packaging, the mechanical chassis 20 is held in the state shown in FIG. 3 by fitting the pin 38 into a U-shaped locking groove 35a formed at the base end of the cylindrical cam 35.

[Problem that the invention attempts to solve]

As described above, in the conventional disk player described above, when in the normal play standby state, the mechanical chassis 20 maintains a horizontal state as shown in FIG. You need to tilt it like this. For this reason, not only special operations and mechanisms are required, but also the clamper becomes free and shakes during transportation, which may cause a breakdown.

[Means to solve the problem]

Therefore, the present invention provides a drive section for rotationally driving the mechanical chassis that is pivotally connected to the main chassis, gives the mechanical chassis the habit of always rotating toward the main chassis, and also The cam is characterized in that the end of the cam groove of the cam has a locking function for maintaining the mechanical chassis in a horizontal state (clamped state).

【Example】

Hereinafter, details of embodiments of the present invention will be explained based on the drawings. In the figures described below, parts common to those in FIGS. 3 to 7 are denoted by the same reference numerals, and redundant explanation will be omitted. 1 and 2 show an embodiment of the disc player of the present invention, in which one end of a mechanical chassis 20 is pivotally connected to a main chassis 50 forming the player body via a pivot joint 51. There is.
An elevating arm 24 extends substantially horizontally below the rotating end of the mechanical chassis 20. Cassiar 2
A circuit board 25 is fixedly installed on the lower surface of 0. A tension spring 52 is installed between the lifting arm 24 and the main chassis 50, which always biases the rotating end of the mechanical chassis 20 in a direction in which it is pulled up. The elevating mechanism 30 is arranged on the lower surface side of the main chassis 50. In the disk player having such a configuration, when the mechanical chassis 20 is in the unloading state, the pin 38 fixed to the hollow sleeve 37a comes into contact with the cam groove 35a of the cylindrical cam 35, so that the tension spring 52 is activated. The upward movement is restricted against the biasing force. On the other hand, when the mechanical chassis 20 moves from the unloading state to the loading state, the pin 38 fixed to the hollow sleeve 37a comes into contact with the cam groove 35a due to the rotation of the cylindrical cam 35 and is applied to the biasing force of the tension spring 52. Hollow post 3
6 along the vertical groove 36a. This results in
The mechanical chassis 20 is tilted horizontally as shown in FIG. At this time, due to the above-mentioned rotation of the clamper arm 41, the clamper 42 comes into pressure contact with the table 23 of the spindle 22a and clamps the disk D onto the table 23. In such a clamped state, the pin 38
Since the pin 38 is fitted into the lock groove 35b formed at the final end of the cam groove 35a of the cylindrical cam 35, the pin 38 will not rattle even if external vibrations or the like are applied. Therefore, by adopting such a clamping configuration, the clamper 42 is placed in a fixed state with respect to the table 23, so that the clamper 42 is prevented from vibrating due to external vibrations during shipping. In addition, when the disk D is in the unloading state, the mechanical chassis 20 is pushed down against the biasing force of the tension spring 52 due to the reverse rotation of the motor 31 constituting the elevating mechanism 30.

[Effect of the idea]

As described above, according to the disk player of the present invention, a locking groove is formed at the final end of the cam groove of the cylindrical cam, and the mechanical chassis is held in a horizontal clamped state at the position of the locking groove. Therefore, in the clamped state in which the mechanical chassis is in a horizontal state, the locking groove prevents the mechanical chassis from moving, so that the state of contact between the clamper and the table is maintained in a stable state. In addition, the shipping state position can be made the same as the clamping state position, and the free state of the clamper is prevented in this state, so there is no need for special operations or mechanisms like in the past, and the clamper can be easily moved during transportation with a simple configuration. can prevent rattling.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway sectional view showing an embodiment of the disc player of the present invention, Fig. 2 is a perspective view showing the main part of the cylindrical cam, and Fig. 3 is an example of a conventional disc player. A partially cutaway cross-sectional view showing
Figure 4 is a side view showing the main parts of the disk layer in Figure 3, Figure 5 is an enlarged sectional view showing the main parts of the disk layer in Figure 3, and Figure 6 is the disk layer in Figure 3.・Plant view showing an enlarged view of the main parts of the layer, No. 7
8 is a sectional view showing the hollow post shown in FIG. 3, and FIG. 9 is a sectional view showing the elevating shaft shown in FIG. 3. DESCRIPTION OF SYMBOLS 11...Base, 12...Holder, 20...Mechanical chassis, 21...Pivot, 22...Spindle motor, 22a...Spindle, 23...Table, 24...Elevating arm, 30...Elevating mechanism, 3
1...Loading motor, 31a...Pulley,
32... Belt, 33... Worm, 34... Mechanical chassis, 35... Cylindrical cam, 36... Post, 37... Lifting shaft, 37a... Sleeve, 37
b... Compression spring, 38... Pin, 39... Guide pin, 41... Clamper arm, 42... Clamper, 50... Main chassis, 51... Pivotal joint,
52...Tension spring.

Claims (1)

[Claims for Utility Model Registration] In a disk player configured by attaching a mechanical chassis comprising a disk information reading mechanism, a feeding mechanism for the information reading mechanism, and a spindle motor to a main chassis forming a player body, the main chassis comprises: a mechanical chassis to which one end is pivotally connected; an elastic body that provides a habit of rotating the mechanical chassis toward the upper clamp position; and an elastic body provided at the free end of the mechanical chassis to move the mechanical chassis up and down. What is claimed is: 1. A disc player comprising: a drive section for rotating the mechanical chassis in a direction, the drive section having a locking function for holding the mechanical chassis in a clamped position and posture.