KR100300605B1 - Apparatus for clamping disk - Google Patents

Abstract

The present invention relates to a disk clamping device, in particular a clamping device for fixing the disk to a turntable for rotating the disk, and at the same time a separate power device such as a motor to provide rotational force to the turntable is independently installed The present invention relates to a thin disk clamping device having a structure that does not have a structure so that the entire system can be made as thin as possible so that a CD-ROM drive mechanism for notebooks having a thickness of 12.7 mm can be realized.

In order to achieve the above object, the present invention provides a base in which a coil is mounted at the same time that a coil is mounted to supply power, and a permanent magnet is mounted so that the shaft can be rotated when power is applied to the coil. A turntable on which a disk is loaded on the upper side, a rotor installed on the upper side of the turntable so as to rotate together with the turntable, and a screw coupled to the shaft to rotate together with the turntable when the turntable is rotated, and the rotor It is composed of a clamping means installed in the rotor to clamp the disk loaded on the turntable when raised to the top of the shaft.

Description

Thin Disk Clamping Device {Apparatus for clamping disk}

The present invention relates to a disk clamping device, and more particularly, to a thin disk clamping device that is thin enough to be applicable to a slim slot CD-ROM drive mechanism for a notebook.

In general, an apparatus for clamping a disk includes when the disk is loaded on a turntable for rotating the disk, a separate clamping device installed on the upper side of the turntable descends to clamp the disk, and a clamping device on the turntable for rotating the disk. In addition, the turntable is lifted by the rotation of the motor shaft, and the disk can be largely divided into clamping.

Hereinafter, each embodiment will be described in detail with an example.

1 is a block diagram illustrating a disk clamping device according to a first embodiment of the prior art.

Referring to FIG. 1, in the first embodiment of the prior art (US Patent 4,797,873 (January 10, 1989)), a motor for rotating the turntable 1 when the disk D is loaded on the turntable 1 2) is driven.

Thereafter, the first link 6 is moved to the left by a combination of the pinion 4 and the rack 5 formed on the motor shaft 3 and the first link 6, respectively. When the first link 6 is moved, the second link 7 having one end connected to the end of the first link 6 is rotated.

Thereafter, when the third link 8 connected to the other end of the second link 7 is moved to the right, and the third link 8 is moved, the cam curved surface 8 ′ formed on the third link 8 is moved. Accordingly, the clamper 9 formed of the magnet is lowered and inserted into the fixing hole of the disk D. Thus, the clamping of the disk D is completed.

Thereafter, the turntable 1 is rotated by the driving force of the motor 2 to rotate the disk D.

However, in the above-described first embodiment of the prior art, since the clamper 9 for clamping the disk D is separately installed on the upper side of the turntable 1, the clamper 9 is installed, as well as the clamper 9. As a separate space for the descending of (9) is required, the entire system has a structure formed long in the vertical direction, and thus, there is a problem that the thinning of the system for applying to a notebook is structurally impossible.

2 is a side sectional view showing a disk clamping device according to a second embodiment of the prior art, and FIG. 3 is a side sectional view showing a state in which a disk is clamped according to a second embodiment of the prior art.

2 and 3, in the second embodiment of the prior art (US Patent 5,631,894 (May 20, 1997)), when the disk D is loaded, the lower motor 11 is driven to drive the motor shaft 12. The fixed part 13 coupled to) is rotated. When the fixing part 13 is rotated, the moving part 14 which is screwed with the fixing part 13 is rotated and raised along the motor shaft 12.

Thereafter, when the friction surface 16 ′ of the clutch portion 16 formed on the upper end of the motor shaft 12 and the friction surface 14 ′ of the moving portion 14 come into contact with each other, the moving portion 14 is raised. This stops and this time point becomes the rotation initial point of the disk D.

At the same time, the disk D is placed on the pedestal 15 formed at the upper end of the moving part 14 while the upper end of the moving part 14 is inserted into the fixing hole of the disk D. The moving part 14 The clamping arm 18 installed on the upper side of the c) is operated by the washer 17 of the clutch unit 16 to be in close contact with the fixing hole of the disk D, thereby completing the clamping of the disk D.

Thereafter, when the moving unit 14 is rotated by the driving force of the motor 11, the moving unit 14 having the pedestal 15 is formed to perform a function of a turntable to rotate the disk D.

However, according to the second embodiment of the related art, a motor 11 for clamping and rotating the disk D is installed at the lower side and moved up and down according to the rotation of the motor shaft 12 to perform a function of a turntable. Since the moving part 14 is installed and the clutch part 16 for operating the clamping arm 18 is formed at the upper end of the motor shaft 12, the installation space of the motor 11 and the clutch part 16 is Of course, the free space for the vertical movement of the moving unit 14 is required, so that the entire system is formed in the vertical direction elongated, and accordingly, there is a problem that the thinning of the system for applying to the notebook is structurally impossible.

4 is a plan view illustrating a disk clamping device according to a third embodiment of the prior art, and FIG. 5 is a side view illustrating an operation relationship between a turntable, a cam potion, and a tray in a third embodiment of the prior art. Is a configuration diagram showing an operation sequence in which the disk is clamped by the clamper arm in the third embodiment of the prior art.

4 to 6, in the third embodiment of the related art (US Patent 5,774,445 (June 30, 1998)), when the tray 21 loaded with the disk D is inserted, the tray 21 is moved by the tray 21. The cam potion 22 is activated.

When the cam potion 22 is operated, the clamping plate 24, which is installed so that the upper surface of the clamper arm 23 is positioned on the same plane as the lower surface of the disk D in FIG. 6A, is moved upward. .

When the clamping plate 24 is raised, the clamper arm 23 is inclined inward, as shown in FIG. 6B, and through this process, the upper end of the clamper arm 23 is fixed to the disk D. When completely exiting the upper side as shown in (c) of FIG. 6 as the protrusion of the turntable 25 is inserted into the fixing hole of the disk (D), the lower surface of the disk (D) is in close contact with the upper surface of the turntable (25).

Thereafter, when the clamping plate 23 is separated from the turntable 25 by the elastic force of the compression spring 26 and lowered, the upper end of the clamper arm 23 is moved outward as shown in FIG. By close contact with the fixing hole of the disk D, the clamping of the disk D is completed.

Thereafter, when the turntable 25 is rotated by the driving force of the motor 27, the disk D is rotated.

According to the third embodiment of the present invention, the turntable 25 for rotating the disk D includes a clamper arm 23 and a clamping plate 24 for clamping the disk D. Therefore, it is slightly advantageous in terms of space utilization as compared to the first and second embodiments described above.

However, the third embodiment described above has a cam potion 22 for raising the turntable 25 when the motor 27 for providing a driving force to the turntable 25 is installed below the tray 21 and the tray 21 is inserted. Because of this, the installation space of the motor 27 and the cam potion, as well as the free space for the vertical movement of the turntable 25 is required, so that the whole system is similar to the first and second embodiments described above. There is a problem in that the structure is formed long in the vertical direction.

Therefore, the above-described third embodiment of the present invention also becomes structurally impossible for the system for applying to a notebook.

In conclusion, the first, second, and third embodiments of the related art are new forms that can make this possible because the entire system is formed long in the vertical direction and is not suitable for realizing a thinner notebook. Need a disk clamping device.

The present invention has been made to solve the above problems, and includes a clamping device for fixing the disk to the turntable for rotating the disk, and at the same time a separate power device such as a motor to provide a rotational force to the turntable It is an object of the present invention to provide a thin disk clamping device that allows the entire system to be as thin as possible, so that the CD-ROM drive mechanism for notebooks having a thickness of 12.7 mm can be implemented.

1 is a block diagram showing a disk clamping device according to a first embodiment of the prior art,

Figure 2 is a side cross-sectional view showing a disk clamping device according to a second embodiment of the prior art,

3 is a side sectional view showing a state in which a disk is clamped according to a second embodiment of the prior art;

4 is a plan view showing a disk clamping device according to a third embodiment of the prior art,

FIG. 5 is a side view illustrating an operation relationship between a turntable, a cam portion, and a tray in a third embodiment of the prior art; FIG.

6 is a configuration diagram showing an operation sequence in which the disk is clamped by the clamper arm in the third embodiment of the prior art;

7 is a block diagram showing a thin disk clamping apparatus according to the present invention,

8 is a plan view of main parts of FIG.

9 is a configuration diagram showing a state in which the disk is clamped by the thin disk clamping apparatus according to the present invention,

FIG. 10 is a plan view of main parts of FIG. 9. FIG.

<Explanation of symbols for main parts of the drawings>

D: Disc 51: Coil

53: axis 55: base

57: permanent magnet 59: turntable

61: rotor 61a, 61b, 61c: friction

63: Cam 67: Joo

Features of the thin disk clamping device according to the present invention for achieving the above object, the base is fixed to the shaft and the screw is formed at the same time the coil is mounted so that the power is applied, and rotates when the power is applied to the coil The permanent magnet is mounted so that the permanent magnet is mounted, and the disk is loaded on the upper side thereof, and the upper side of the turntable is installed to rotate together with the turntable. The rotor is picked up and the clamping means installed in the rotor to clamp the disk loaded on the turntable when the rotor is raised to the top of the shaft.

In addition, an additional feature of the present invention is that the clamping means includes a plurality of cams moving forward toward the center direction of the rotor when the rotor is lifted to the upper end of the shaft to remove the constraints by the shaft, and one end of the cam A cam spring that provides an elastic force to maintain a close contact with the plurality of jaws, a plurality of jaws that move toward the outside of the rotor along the curved surface of the cam when the cam is advanced toward the center of the rotor, and clamps the disk; One end is composed of a jaw spring that provides an elastic force to maintain a state in close contact with the curved surface of the cam.

In addition, an additional feature of the present invention, the outer surface of the rotor is formed with at least one friction member protruding outwardly, the friction that the friction member is inserted in the portion corresponding to the friction of the rotor of the turntable The groove is formed to be coupled to each other so that the turntable and the rotor can be rotated together, the friction groove is formed long in the vertical direction so that the friction is raised when the rotor is raised while rotating with the turntable.

The present invention configured as described above has the advantage that the entire system can be made as thin as possible to implement a CD-ROM drive mechanism for notebooks of 12.7 mm thickness.

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

7 is a block diagram showing a thin disk clamping apparatus according to the present invention, Figure 8 is a plan view of the main portion of Figure 7, Figure 9 is a disk clamping state by the thin disk clamping apparatus according to the present invention is shown Fig. 10 is a plan view of the main parts of Fig. 9.

In the thin disk clamping device according to the present invention, as shown in FIGS. 7 to 10, the base 55 on which the coil 51 is mounted so that the power is applied and the shaft 53 formed with a screw thread in the center thereof is fixed. ) And a turntable 59 on which a permanent magnet 57 is mounted so as to be rotated when power is applied to the coil 51, and a disk D is loaded thereon, and above the turntable 59. Rotor which is installed to be rotated together with the turntable 59 and is screwed (53 ', 61') and the shaft 53 and the turntable 59 is rotated together when the turntable (59) is rotated to follow the shaft (53) 61 and clamping means provided in the rotor 61 to clamp the disk D loaded on the turntable 59 when the rotor 61 is raised to the upper end of the shaft 53. .

Here, the clamping means has three cams 63; 63a which move forward toward the center direction of the rotor 61 when the rotor 61 is raised to the upper end of the shaft 53 and the restriction by the shaft 53 is removed. , 63b, 63c, three cam springs 65 (65a, 65b, 65c) providing elastic force so that one end of the cam 63 is in close contact with the shaft 53, and the cam 63 ) Advances toward the center of the rotor 61, the three jaws (67; 67a, 67b, 67c) are moved along the curved surface of the cam (63) outward of the rotor (61) to clamp the disk (D). And three jaw springs 69a, 69b, and 69c which provide an elastic force so that one end of the jaw 67 is in close contact with the curved surface of the cam 63.

In addition, three friction elements 61a, 61b, and 61c are formed on the outer surface of the rotor 61 so as to protrude in an outward direction. Among the turntables 59, the friction elements 61a, 61b and 61c are joined to each other so that the turntable 59 and the rotor 61 can be rotated together by forming friction grooves into which the friction elements 61a, 61b and 61c are inserted.

In addition, the friction groove is formed long in the vertical direction so that the friction (61a, 61b, 61c) can be raised when the rotor 61 is raised while rotating with the turntable (59).

The thin disk clamping device according to the present invention configured as described above operates as follows.

First, when the disk D is loaded on the turntable 59, power is applied to the coil 51 mounted on the base 55, and the coil 51 and the permanent magnet 57 interact with each other. The turntable 59 is rotated.

When the turntable 59 is rotated as described above, the rotor 61 is rotated together with the turntable 59 by the combination of the friction elements 61a, 61b, and 61c and the friction groove. At this time, since the rotor 61 is screwed to the shaft 53 fixed to the base 55, the rotor 61 is rotated together with the turntable 59 and moved upwards with the disk D.

Thereafter, when the rotor 61 is fully raised to the upper end of the shaft 53 and the restriction of the cam 63 by the shaft 53 is removed, the cam 63 is advanced toward the center direction of the rotor 61. do.

When the cam 63 is advanced, the jaw 67, one end of which is in close contact with the curved surface formed on the cam 63, is moved outward along the curved surface to closely adhere to the fixing hole of the disk D with a predetermined pressure. do.

As a result, the clamping of the disk D is completed, and if the above process is performed in reverse, the clamping of the disk D is released.

The thin disk clamping device according to the present invention constructed and operated as described above comprises a cam 63 and a jaw 67 which are clamping means for fixing the disk D to a turntable 59 for rotating the disk D. And a structure using permanent magnets 57 and coils 51 mounted on the turntable 59 and the base 55 to provide rotational force to the turntable 59. It is unnecessary to install a separate installation space for installing the space and the free space for moving the turntable 59 up and down, there is no need to install a separate power device such as a motor independently.

Thus, the present invention has the advantage that the entire system can be made as thin as possible to implement a CD-ROM drive mechanism for notebooks of 12.7 mm thickness.

Claims (3)

A base on which a coil is mounted so that power is applied and a shaft is formed at the center thereof, and a turntable on which a disk is loaded at the same time as a permanent magnet is mounted so that the coil can be rotated when power is applied to the coil; A rotor which is installed on the upper side of the turntable so as to be rotated together with the turntable and is screwed with the shaft and rotates together when the turntable is rotated, and is lifted along the axis, and is loaded on the turntable when the rotor is raised to an upper end of the shaft. A thin disk clamping device, comprising: clamping means mounted to the rotor to clamp the disk. The method of claim 1, The clamping means provides a plurality of cams moving forward toward the center direction of the rotor when the rotor is lifted up to the upper end of the shaft, and the one end of the cam is in close contact with the shaft. A cam spring, a plurality of jaws which move toward the center of the rotor toward the center of the rotor and move outwards along the curved surface of the rotor to clamp the disc, and one end of the jaws is in close contact with the curved surface of the cam. Thin disk clamping device, characterized in that consisting of a jaw spring to provide an elastic force to maintain. The method of claim 1, At least one friction member is formed on an outer surface of the rotor to protrude in an outward direction, and a friction groove into which the friction member is inserted is formed in a portion of the turntable corresponding to the friction member of the rotor so that the turntable and the rotor are together. Combined with each other to be rotated, And the friction groove is formed long in the vertical direction so that the friction member can be raised when the rotor is raised while rotating with the turntable.