JPH09106600A - Disk chucking device for compact disk player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk chucking device for compact disk player for speedily performing the stable turn of turn table while effectively absorbing impulse even when the impulse is applied in stably loading a disk onto the turn table by installing an elastic object on the contact surface where the disk is stably loaded. SOLUTION: A leaf spring 132 is integrally formed by cutting out one part of contact surface to stably load a compact disk. Besides, a leaf spring 326 to operate elastic force in the direction of disk 160 is formed at a chucking member 320 at the upper part of turn table 100 as well. Thus, when the disk 160 is chucked, the disk is stably turned between the upper and lower springs 132 and 326.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turntable for a compact disc player, and more particularly, a disc is seated by forming a leaf spring on the contact surface of the turntable for absorbing a shock to the disc. The present invention relates to a disc chucking device for a compact disc player, which effectively absorbs the shock of time and enables stable rotation of the disc.

[0002]

2. Description of the Related Art Generally, an optical device such as a compact disc player which uses an optical pickup actuator has a disc to which various audio signals or video signals are input mounted in the optical device and provided on the bottom of a turntable. The signal contained in the disk is reproduced through the optical pickup actuator by rotating the driven motor. This allows the user to view the video and audio.

The chucking method for mounting the disk on the turntable includes a method for mounting the disk on the turntable and pressing and fixing the magnetic chuck from above, and a method of pressing the turntable and the disk from above and below by a spring. Various chucking methods have been adopted, such as the method of seating the disc. FIG. 1 is an exploded perspective view of a spring type disk chucking device of the conventional disk chucking methods described above. As shown in the figure, the rotary shaft 52 of the drive motor 50 is rotatably fitted to the body 42, the spring 14 and the insertion member 10 are assembled on the upper portion of the body 42, and the rotation shaft 52 is turned around the insertion member 10. Table 3
0 is assembled.

A push-in hole 40 having a predetermined diameter is formed through the center of the body 42, and a spring groove 4 for fixing the spring 14 is formed around the body 42.
4 are formed. Further, a large number of hook holes 46 are formed around the spring groove 44. The turntable 30 has a disc shape and has a center hole 3 in the center.
4 is formed and assembled to the body 42. A bent portion 32 is formed on the turntable 30.

The spring 14 is installed in the spring groove 44 of the body 42, and the insertion member 10 is provided above the spring.
Is assembled. The insertion member 10 is formed with an inclined surface 11 so that the disc can be easily seated in the center, and three elastic hooks 12 project from the lower portion thereof. The elastic hook 12 is engaged with the hook hole 46 of the body 42 to complete the assembly.

FIG. 2 is a sectional view of the disk chucking device shown in FIG. As shown in FIG. 2, the rotary shaft 52 of the drive motor 50 is fitted in the push-in hole 40 of the body 42 so as to rotate together. Body 42
The insert member 10 is assembled on the upper peripheral edge of the spring, and the spring 14 is located between the insert member 10 and the body 42. The turntable 30 is fitted around the body 42, and the elastic hooks 12 are fitted in the hook holes 46 and assembled. Further, 60 is a compact disc to be inserted into the insertion member 10, and 62 is a disc hole of the disc 60. A chucking device (not shown) for firmly fixing the disk 60 is provided on the upper surface of the disk 60. The turntable 30 is manufactured by pressing a metal material, and the body 42 is manufactured by injecting a plastic material.

According to the disc chucking device of the compact disc player having the above structure, the disc 60
When seated, the slanted surface 11 of the insertion member 10 guides the vehicle. Even if the impact of the disc 60 is applied to the insertion member 10, the impact is absorbed while the spring 14 is compressed, and the disc 60 can be quickly stabilized.

However, according to the conventional disk chucking device for a compact disk player, the structure of the turntable is complicated and the number of parts is increased.
When an external shock is applied to the turntable, the elastic vibration of the spring deteriorates the stability of the disk rotation. Further, since the main parts are expensive, the production unit price of the product is high.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to provide an elastic body on the contact surface of a disk to be seated. The disc chucking of a compact disc player that is installed so that the turntable can rotate quickly and stably even if a shock is applied when the disc is settled on the turntable. To provide a device.

[0010]

DISCLOSURE OF THE INVENTION It is an object of the present invention as described above to provide at least a pair of first elastic members for holding the compact disc by cutting out a part of the contact surface on which the compact disc is seated. A turntable which is formed in the center of at least a pair of second elastic members that exert an elastic force from the upper portion of the turntable toward the disk, and the turntable that rotates. A chucking member having a fixing groove into which the shaft is fitted; and a disk chucking device of a compact disk player.

Here, the first elastic member may be a first leaf spring having a rising inclination by cutting out a part of the contact surface at the same distance from the rotating shaft in the circumferential direction, or alternatively, the first contact member of the contact surface may be formed. It is desirable that a part of the second leaf spring is incised in the radial direction of the rotary shaft and has a rising inclination. The first leaf spring may be symmetrically formed on the turntable, and the second leaf spring may be symmetrically formed on the turntable.

The second elastic member may be a third leaf spring protruding from the lower surface of the chucking member, and the third leaf spring may be formed symmetrically with respect to the center of rotation of the chucking member. . It is preferable that an installation groove is formed along the circumferential surface of the chucking member, and a chucking plate that is inserted into the installation groove and supports the rotational movement of the chucking member is further installed.

Further, the object of the present invention as described above is such that, of the contact surfaces of the compact disk to be seated, a part of the contact surface at the same distance from the rotation axis is incised in the circumferential direction, A turntable on which at least a pair of first plate springs symmetrically formed on the turntable are installed; and a turntable projecting symmetrically with respect to the center of rotation from the upper surface of the turntable. At least a pair of third leaf springs that exert an elastic force in the disc direction, an installation groove formed on the circumferential surface,
A chucking member having a fixing groove formed at the center of rotation so that the rotation shaft of the turntable is fitted;
And a chucking plate that is inserted into the installation groove and supports the rotational movement of the chucking member.

The object of the present invention is to elastically hold the disc by cutting a part of the contact surface of the compact disc, which is seated in the radial direction of the rotary shaft, to form an upward slope. A turntable on which at least a pair of mutually symmetrical second leaf springs are installed on the rotating shaft;
At least a pair of third leaf springs that exert an elastic force from the upper portion of the turntable in the disc direction, an installation groove formed on the circumferential surface, and a rotation center so that the rotation shaft of the turntable can be fitted. A chucking member having a fixed groove; and a chucking plate that is inserted into the installation groove and supports rotational movement of the chucking member; Is also achieved.

As described above, in the disc chucking device for the compact disc player according to the present invention, the elastic force of the leaf spring acts on the disc on the contact surface of the turntable. For this reason, there is a minute gap between the turntable and the disc, but if the chucking member and the chucking plate overcome the elastic force and press the disc, the disc is brought into close contact with the turntable. That is, the disc is fixed while being in close contact with the contact surface of the turntable and the chucking member.

Therefore, according to the disc chucking device of the compact disc player of the present invention configured as described above, since the components of the turntable are integrally formed with the turntable in the chucking device, the number of components is reduced. It is possible to reduce the unit price of production. Further, since the impact on the disc can be reduced quickly and effectively, there is an advantage that the chucking of the disc can be performed stably.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. FIG. 3 is a perspective view of a turntable in the disc chucking device of the compact disc player according to the first embodiment of the present invention. As shown in the figure, the rotary shaft 110 is fitted and assembled in a push-in hole 122 formed in the center of the turntable 100. A recessed groove 120 is formed in the center of the turntable 100 so that a chucking member may be fitted in addition to the push-in hole 122, and an inclined surface 124 having a predetermined slope is formed on the outer peripheral surface of the recessed groove 120. .

Three first plate springs 132 are arranged at regular intervals on the circumference with the rotating shaft 110 of the turntable 100 as an axis of symmetry. Each of the first leaf springs 132 has a contact surface 1 of the turntable 100.
A slit 130 penetrating 26 is formed along the circumferential direction, and one end of the first plate spring 132 is formed integrally with the turntable 100. First leaf spring 13
2, one end is supported in a cantilever manner, and the other end is positioned slightly higher than the contact surface 126 in a state where there is no load, and a small upward slope is formed between the one end and the other end.

FIG. 4 shows the turntable 100 shown in FIG.
FIG. 7 is a cross-sectional view showing a state in which the disk is chucked together with the disk 160. In FIG. 4, the broken line indicates the disk 160.
The state of the chucking member 320 and the chucking plate 300 before being seated, and the solid line indicates the disk 1
60 shows the seated state, respectively. As shown in the figure, the rotary shaft 110 of the drive motor 150 is assembled by being fitted into the push-in hole 122 of the turntable 100, and its end projects above the turntable 100 by a predetermined length.

At the center of the contact surface 126 of the turntable 100, the disc hole 16 of the compact disc 160 is provided.
2 is fitted and fixed. A chucking member 320 is in close contact with the upper surface of the disk 160. The chucking member 320 has a structure capable of exerting an elastic force on the disk 160 while rotating. That is, the third leaf springs 326 are formed symmetrically with each other in the lower portion, and the installation groove 324 is formed on the circumferential surface along the circumferential surface. At the center of the chucking member 320, a fixed groove 322 that can be fitted into and removed from the rotating shaft 110 is formed.

A chucking plate 300 for guiding the rotational movement of the chucking member 320 while supporting the chucking member 320 is assembled around and above the chucking member 320. The chucking plate 300 is provided with a rotation guide 302 that is fitted in the installation groove 324. FIG. 5 is a perspective view of a turntable in a disc chucking device of a compact disc player according to a second embodiment of the present invention. As shown in the figure, the end of the rotary shaft 210 is fitted into a push-in hole 222 formed at the center of the turntable 200 to be assembled. A concave groove 220 is formed in the center of the turntable 200 so that a chucking member may be fitted in addition to the push-in hole 222, and an inclined surface 224 having a predetermined slope is formed on the outer peripheral surface of the concave groove 220. There is.

Three second leaf springs 232 are arranged at regular intervals on the circumference with the rotation axis 210 of the turntable 200 as an axis of symmetry. Each second leaf spring 232 has a contact surface 2 of the turntable 200.
A slit 230 penetrating 26 is formed along the radial direction, and one end of the second leaf spring 232 is formed integrally with the turntable 200. Second leaf spring 23
2, one end is supported in a cantilever manner, the other end is located slightly higher than the contact surface 226 in a state without load, and a small upward slope is formed between the one end and the other end.

According to the first embodiment of the disc chucking device for the compact disc player of the present invention constructed as described above, when the disc 160 is seated on the contact surface 126, the elastic force of the first leaf spring 132 is increased. The disk 160 is supported by the disk 160, and a small gap is generated between the disk 160 and the contact surface 126. When the chucking member 320 descends and contacts the upper portion of the seated disc 160, the fixed groove 322 is fitted to the end of the rotating shaft 110. While the chucking member 320 is fitted to the rotating shaft 110, the third leaf spring 326 causes the disc 160 to move.
Adhere to the upper surface of the Therefore, the third leaf spring 326
The disk 160 exists between the first plate spring 132 and the first plate spring 132. Usually, the elastic force of the third leaf spring 326 is made larger than the elastic force of the first leaf spring 132 so that the disc 160 is brought into close contact with the contact surface 126.

When the drive motor 150 is rotated by a control unit (not shown) such as a microcomputer, the turntable 100 fitted to the rotary shaft 110, the disc 160 and the chucking member 320 are simultaneously rotated. When the chucking member 320 rotates, the installation groove 324 and the rotation guide 30 are rotated.
The chucking plate 300 supports the chucking member 320 while sliding between the two.

If the drive motor 150 stops rotating,
The chucking member 320 moves upward while being separated from the disc 160, and a predetermined gap is formed again between the disc 160 and the contact surface 126 by the elastic force of the first leaf spring 132. After that, finally the disc 160
Is pulled out. Also in the case of the turntable 200 according to the second embodiment of the present invention, the operation principle and the order of the first embodiment are the same. However, in the shape of the leaf spring, the first leaf spring 132 of the first embodiment is a leaf spring having a radius, whereas the second leaf spring 232 of the second embodiment is a leaf spring having a linear shape in the radial direction. Be different.

[0026]

Therefore, according to the disc chucking device of the compact disc player of the present invention constructed as described above, the components of the turntable are integrally formed with the turntable in the chucking device. The number can be reduced and the unit production cost can be reduced. Further, since the impact on the disc can be reduced quickly and effectively, there is an advantage that the chucking of the disc can be performed stably.

Although the present invention has been specifically described based on the preferred embodiments, the present invention is not limited thereto and can be modified and improved without departing from the gist of the present invention. Of course.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a conventional spring type disk chucking device.

FIG. 2 is a sectional view of the disk chucking device in FIG.

FIG. 3 is a perspective view of a turntable in the disc chucking device of the compact disc player according to the first exemplary embodiment of the present invention.

4 is a cross-sectional view showing a state in which the turntable of FIG. 3 is chucked together with a disc.

FIG. 5 is a perspective view of a turntable in a disc chucking device of a compact disc player according to a second exemplary embodiment of the present invention.

[Explanation of symbols]

 100, 200 Turntable 110, 210 Rotation shaft 120, 220 Recessed groove 122, 222 Push-in hole 126, 226 Contact surface 130, 230 Slit 132 First leaf spring 150 Drive motor 160 Disk 232 Second leaf spring 300 Chucking plate 302 Rotation Guide 320 Chucking member 322 Fixed groove 324 Installation groove 326 Third leaf spring

Claims (10)

[Claims] 1. A turntable in which a part of a contact surface of a compact disc to be seated is incised, and at least a pair of first elastic members for holding the disc is installed; and the disc from the upper part of the turntable. A chucking member that has at least a pair of second elastic members that exert an elastic force in a direction, and a fixing groove that is formed in the center of the at least a pair of second elastic members and in which the rotary shaft of the turntable is fitted. A disc chucking device for a compact disc player, including: 2. The first elastic member is a first leaf spring which has a contact surface at the same distance from the rotating shaft and is incised in a circumferential direction to have a rising inclination. A disc chucking device for the described compact disc player. 3. The compact disc according to claim 1, wherein the first elastic member is a second plate spring having a part of the contact surface cut out in a radial direction of the rotary shaft and having an upward inclination. Disc chucking device for players. 4. The disk chucking device for a compact disk player according to claim 2, wherein the first leaf springs are symmetrically formed on the turntable. 5. The disc chucking device for a compact disc player according to claim 3, wherein the second leaf springs are symmetrically formed on the turntable. 6. The disc chucking device for a compact disc player according to claim 1, wherein the second elastic member is a third leaf spring protruding from a lower surface of the chucking member. 7. The disc chucking device for a compact disc player according to claim 6, wherein the third leaf spring is formed symmetrically with respect to the center of rotation of the chucking member. 8. The chucking member has an installation groove formed along a circumferential surface thereof, and a chucking plate inserted into the installation groove and supporting a rotational movement of the chucking member is further installed. The disc chucking device for a compact disc player according to claim 1, wherein: 9. A portion of the contact surface of the compact disk, which is seated on the compact disk, at the same distance from the rotation axis, is partially cut out in the circumferential direction to elastically hold the disk, and symmetrical on the turntable. A turntable having at least a pair of first leaf springs formed in the form of a ridge; and a projecting symmetry with respect to the center of rotation on the lower surface, and exerting an elastic force from the upper portion of the turntable in the disc direction. A chucking member having at least a pair of third leaf springs, an installation groove formed on a circumferential surface, and a fixed groove formed at a rotation center so that the rotation shaft of the turntable can be fitted thereto; A chucking plate that is inserted into the chucking member and supports the rotational movement of the chucking member; Device. 10. A compact disc is held by a part of a contact surface to be seated in a radial direction of a rotation shaft to form a rising inclination, thereby holding the disc, and at least a pair of mutual symmetry on the rotation shaft. A second turntable having a second leaf spring installed therein, and at least a pair of third leaf springs projecting symmetrically from the center of rotation on the lower surface and exerting an elastic force from the upper portion of the turntable toward the disc. A chucking member having an installation groove formed on the circumferential surface and a fixed groove formed at the center of rotation so that the rotation shaft of the turntable can be fitted; A chucking plate for supporting the rotational movement of the member; and a disk chucking device for a compact disk player.