JPH0229564Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a disc clamp device provided in a compact disc playback device or the like.

<Prior Art> FIG. 1 is a perspective view of a conventional disk clamp device, and FIG. 2 is a side view of the clamper 1 in FIG.

The clamper 1 has a disk clamp portion 1a that presses and clamps a disk (not shown), and is arranged to be rotatable up and down about a rotating shaft 10. Further, the control lever 2 is connected to the contact portion 1 of the clamper 1.
It has an extending portion 2a that comes into contact with b and presses the clamper 1 to rotate.

The support frame 3 is fixed to the main body of the disc playback device, supports the rotating shaft 10, and supports the clamper 1 rotatably via the rotating shaft 10. A tension spring 4 is disposed between the support frame 3 and the control lever 2, and rotates the disk clamp portion 1a upward. The biasing spring 5 is disposed between the clamper 1 and the control lever 2, and
The disk clamp portion 1a is rotated downward to clamp the disk.

Further, the pivot 7 is fixed to the main body,
The control lever 2 is rotatably supported, and the control lever 2 is rotatably supported.
When the pin 6 fixed to the pin receives an external force,
The control lever 2 is moved so as to move the extending portion 2a back and forth.
Rotate.

Next, the operation of this conventional disk clamp device will be explained with reference to FIGS. 1 and 2.

When the fixed pin 6 of the control lever 2 is not subjected to any external force, for example when the disc playback device is not operating, the pin 6 is moved in the direction of arrow A by the spring force of the tension spring 4, and therefore the control lever The second extending portion 2a rotates in the forward direction, that is, in the direction of arrow C. As a result, the disk clamp portion 1a is moved upwardly and
That is, it rotates in the direction of arrow D, and the disk clamp is released.

Arrow B is inserted into the fixing pin 6 of the control lever 2 from the outside.
When the tension spring 4 rotates under force in the direction of , for example when operating a disc playback device,
The extending portion 2a of the control lever 2 rotates rearward against the spring force. As a result, the disk clamp portion 1a is rotated downward by the biasing spring 5, that is, in the direction of arrow E, and clamps the disk.

<Problems to be solved by the invention> As described above, such a conventional disk clamp device uses two axes for rotation, that is, the rotating shaft 10 and the pivot shaft 7. The structure becomes complicated, the number of processing steps and the number of parts increases,
There was a cost problem.

Furthermore, since this device has a complicated structure, there is a problem in that the device may be misaligned during assembly, resulting in inconvenience in its operation.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art and to provide a disk clamping device having a simple structure and a disk clamping mechanism.

<Means for Solving the Problems> In order to achieve this object, the present invention includes a clamper that is rotatably provided and clamps the disk, and a clamper that is rotatably engaged with the clamper and that is rotatably provided. In a disk clamping device equipped with a control lever for rotationally controlling a clamper, a disk clamping portion for rotationally clamping the disk is provided at one end of the clamper, and a disk clamping portion for rotationally clamping the disk is provided at the other end, and a control lever for controlling rotation of the disk clamping portion is provided at the other end. a control portion for driving the control lever, a contact portion that comes into contact with the control portion is provided on the control lever, the clamper and the control lever are both rotatably disposed on the same axis, and a sliding member for driving the control lever is provided. The present invention is characterized in that it includes a member, a spring that biases the disk clamp portion to rise, and a spring that biases the disk clamp portion to descend.

Next, an embodiment of the present invention will be described with reference to FIGS. 3 and 4.

FIG. 3 is a perspective view of the disk clamping device according to the present invention, and FIG. 4 is a sectional view of the disk clamping device of FIG. 3.

The clamper 11 includes a disk clamp portion 11a that clamps a disk (not shown), and is arranged to be rotatable up and down about a rotation shaft 20.
The control lever also has a pressure contact pin 17 which is similarly arranged to be rotatable about the rotation shaft 20 and comes into contact with the contact portion 11b of the clamper 11 so as to rotate the clamper 11.

The support frame 13 is fixed to the main body 18 and supports the rotating shaft 20 at the bent portion 13a, and rotatably supports the clamper 11 via the rotating shaft 20. A clamper biasing spring 15 is disposed between the main body portion 18 to which the support frame 13 is fixed and the leg portion 22 of the clamper 11, and rotates the disk clamp portion 11a downwardly to release the disk. to clamp.

The tension spring 14 has a spring force greater than that of the clamp biasing spring 15, is disposed between the main body 18 and the control lever 12, and is arranged to move the disc clamp part 11a upwardly by the biasing spring. 15 spring force and rotate it.

The sliding member 30 is arranged to slide on the main body portion 18 and has a vertically extending portion 30b. A part of this extending portion 30b has an inclined surface portion 30a, and the control lever 12 is moved so as to come into contact with this inclined surface portion 30a.
A fixing pin 16 fixed to is provided. Therefore, the fixing pin 16 rotates upward along this inclined surface portion 30a.

Further, as shown in FIG. 4, the rotating shaft 20 is tapered at the portion that rotatably supports the control lever 12, and is formed as a stepped shaft having an outer diameter that differs in the middle as shown. For this purpose, a retaining ring 21 such as an E-ring is fitted into a groove provided at the right end of the rotating shaft 20.
Just by fixing it in one place, you can prevent the shaft from coming off. Note that the diameter of the shaft hole of the clamper 11 is different on the left and right sides, and the diameter of the shaft hole of the control lever is the same as the diameter of the right hole of the clamper 11.

Next, the operation of the disk clamp device according to the present invention will be explained.

As the sliding member 30 slides, the fixing pin 1
6 is directed upward against the spring force of the tension spring 14;
That is, when rotated in the direction of arrow F, the control lever 12
rotates, and the disk clamp portion 11a by the clamp biasing spring 15 rotates downward, ie, in the direction of arrow G, to clamp the disk.

Further, when no external force is applied to the fixing pin 16, the spring force of the tension spring 14 is greater than the spring force of the clamp biasing spring 15, so the control lever 12
rotates downward, that is, in the direction of arrow H. Therefore, the press pin 17 presses the contact portion 11b downward, rotates the disk clamp portion 11a upward, that is, in the direction of arrow J, and releases the disk clamp.

<Effects of the invention> The present invention has the above-mentioned configuration, in which the clamper 11 and the control lever 12 are mounted on a single rotating shaft 20.
Since the disk clamp mechanism can be rotatably supported, the disk clamp mechanism can be formed into a simple structure.
0 is formed as a stepped shaft by narrowing the outer diameter in the middle, so that the installation work is simple, and great practical effects can be expected.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional disk clamp device, FIG. 2 is a side view of the clamper 1 in FIG. 1, FIG. 3 is a perspective view of a disk clamp device according to the present invention, and FIG. 3 is a sectional view of the disk clamp device in FIG. 3. FIG. 11... Clamper, 12... Control lever, 13
... Support frame body, 14 ... Tension spring, 15 ... Biasing spring, 16 ... Fixing pin, 17 ... Pressure contact pin,
20...Rotation axis.

Claims (1)

[Scope of utility model registration request] A disk clamping device comprising: a clamper that is rotatably provided to clamp the disk; and a control lever that engages with the clamper and is rotatably provided to control the rotation of the clamper, wherein one end of the clamper is provided. A disk clamp portion for rotationally clamping the disk is provided at the other end, and a control portion for controlling the rotation of the disk clamp portion is provided at the other end, and a contact portion that comes into contact with the control portion is provided on the control lever. a sliding member for driving the control lever;
A disk clamp device comprising: a spring that urges the disk clamp portion to rise; and a spring that urges the disk clamp portion to descend.