KR20060067216A - Clamp assembly of optical disk drive - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp assembly of an optical disk drive, and to a clamp assembly of an optical disk drive capable of simplifying an assembly process to improve assemblability and productivity, and to shorten an assembly time.

To this end, the present invention is a magnetic disk in the optical disk drive having a spindle motor, a turntable fixed to the rotating shaft of the spindle motor, and a clamp assembly in close contact with the turntable to prevent separation of the optical disk seated on the turntable, the magnetic body A clamp plate formed of a material and having one side formed therethrough a fastening hole along a thickness direction; A clamp body having a contact surface in close contact with the turntable on one side and an elastic fastening member which is elastically fastened through the fastening hole so that the clamp plate can be fastened to the other side; Provided is a clamp assembly of a disk drive.

Optical disc drive, clamp, fastener, elastic fastener, inclined contact surface

Description

CLAMP ASSEMBLY OF OPTICAL DISK DRIVE}

1 is a plan view showing the structure of a conventional optical disk drive

Figure 2 is a side view showing the structure of a conventional optical disk drive

3 is a plan view and a side view showing the structure of a clamp as a conventional optical disk drive.

4 to 5 is a conventional optical disk drive, a plan view showing the fastening structure of the clamp

6 is a side view showing the structure of an optical disk drive having a clamp assembly according to the present invention;

7 is a plan view and a side view showing the structure of the clamp assembly of the optical disk drive according to the present invention.

8 is a side view showing the fastening structure of the clamp assembly of the optical disk drive according to the present invention.

<Description of the symbols for the main parts of the drawings>

110: optical disk 130: spindle motor

131: turntable 170: clamp assembly

171: clamp body 172: elastic fastening piece

172a: inclined contact surface 173: clamp plate

173a: Fastener

The present invention relates to a clamp assembly of an optical disk drive, and more particularly, to a clamp assembly of an optical disk drive that can simplify the assembly process to improve assembly and productivity, and to shorten the assembly time.

1 is a plan view showing the structure of a conventional optical disk drive, and FIG. 2 is a side view showing the structure of a conventional optical disk drive.

3 is a plan view and a side view showing a structure of a clamp assembly as a conventional optical disk drive, and FIGS. 4 to 5 are plan views showing a fastening structure of the clamp assembly as a conventional optical disk drive.

As shown in Figs. 1 and 2, a conventional optical disc drive 1 includes a pickup device 20 for reproducing and recording data of an inserted optical disc 10, and a turntable 31 for the optical disc 10. And an external shape of the optical disk drive 1 and the front rubber 40 and the rear rubber 50 for supporting the spindle motor 30 seated on and rotating, the support 32 for supporting the spindle motor 30. A case (not shown), a tray 60 which is extracted outwardly and inserted from the outside to insert the optical disk 10 into the optical disk drive 1, and a turntable when the optical disk 10 is rotated. And a clamp assembly 70 for bringing the optical disc 10 into close contact with the turntable 31 so that the optical disc 10 is not separated from the 31.

Therefore, when the user places the optical disk 10 in the tray 60 and inserts it into the optical disk drive 1, the spindle motor 30 and the turntable 31 under the inserted tray 60 are elevated by the lifting means. Is coupled to the clamp assembly 70 by a magnet on the spindle motor 30 side or the clamp assembly 70 side, and the optical disk 10 seated on the turntable 31 is turned by the clamp assembly 70. 31, the optical disk 10 is not rotated from the turntable 31 even if the optical disk 10 rotates at a high speed.

Here, the clamp assembly 70 is divided into a form including a permanent magnet 74 and a form not including a permanent magnet 74, and whether or not the permanent magnet 74 is included is permanent on the spindle motor 30 side. Only one of the spindle motor 30 and the clamp assembly 70 need to include the permanent magnet 74, depending on whether the magnet 74 is included. Hereinafter, the configuration of the clamp assembly 70 including the permanent magnet 74 will be described in detail.

3 to 5, the clamp assembly 70 includes a clamp body 71 in contact with the optical disk 10 and the turntable 31 and a spindle motor to prevent detachment of the optical disk 10. As shown in FIGS. The clamp plate 73 formed of a magnetic material to generate a contact force between the side 30 and the clamp assembly 70, and the permanent magnet 74 mounted in the magnet seating groove (not shown) of the clamp body 71. It is configured to include.

The clamp body 71 is injection-molded with plastic, and includes a protrusion 71a inserted into a groove (not shown) in the center of the turntable 31 fixed to the rotating shaft of the spindle motor 30, and the turntable 31. By having the recessed part 71b recessed in contact with the protrusion part, and the contact surface 71c for contacting the optical disk 10 with a contact force, the optical disk can be rotated even when the spindle motor 30 rotates the optical disk 10. This prevents the 10 from being disengaged from the turntable 31.

The clamp plate 73 is a magnetic material formed in a disk shape by press working, and the mediating role of mutual attraction by magnetic force between the clamp assembly 70 and the spindle motor 30 by the permanent magnet 74. Do it.

On the other hand, the clamp plate 73 and the clamp body 71 is integrally fastened, for this purpose, a hook 72 having a substantially "a" shape is formed on the upper portion of the clamp body 71 and the clamp plate ( 73, the insertion hole 73a and the fixing hole 73b through which the hook 72 is inserted and fixed are formed through the thickness direction.

Here, the fixing hole 73b extends along the circumferential direction of the clamp plate 73 at one side of the insertion hole 73a and is formed to have a reduced area compared to the insertion hole 73a.

With such a structure, the clamp assembly 70 inserts the hook 72 of the clamp main body 71 into the insertion hole 73a of the clamp plate 73 as shown in FIG. As shown in (b), the clamping plate 73 is rotated in the clockwise direction so that the hook 72 is fitted into the fixing hole 73b to complete the fastening.

However, in the case of the conventional optical disk drive 1, the process of fastening the clamp assembly 70 as described above is inconvenient and cumbersome as well as takes a long time to assemble, resulting in increased production and assembly processes There was a problem of increased productivity and decreased productivity.

Particularly, when the hook 72 of the clamp body 71 is inserted into the insertion hole 73a of the clamp plate 73 and then inserted into the fixing hole 73b side, work is performed through a separate dedicated jig 80 as shown in FIG. 5. To this end, the clamp plate 73 had to be formed with a fixing hole 73c for accommodating and fixing the support shaft 81 of the dedicated jig 80, thereby increasing the manufacturing and assembly process costs There was a problem that increases and productivity is lowered.

Accordingly, an object of the present invention is to provide a clamp assembly of an optical disk drive that can be solved as described above, which can simplify the assembly process to improve assembly and productivity, and to shorten the assembly time. There is this.

The present invention for achieving the above object, an optical disk having a spindle motor, a turntable fixed to the rotating shaft of the spindle motor, and a clamp assembly in close contact with the turntable to prevent separation of the optical disk seated on the turntable A drive, comprising: a clamp plate formed of a magnetic material and having a fastening hole penetrated along one side thereof in a thickness direction; It characterized in that it comprises a clamp body is formed on one side is in contact with the turntable in close contact with the turntable and the other side is elastically fastened elastically fastened through the fastening hole so that the clamp plate is fastened.

In addition, the front end portion of the elastic fastening piece is characterized in that the inclined contact surface is formed to be in sliding contact with the fastening hole.

In addition, the elastic fastening piece and the fastening hole is characterized in that a plurality is formed spaced apart in the circumferential direction of the clamp plate.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

6 is a side view illustrating the structure of an optical disc drive having a clamp assembly according to the present invention, and FIG. 7 is a plan view and a side view illustrating the structure of the clamp assembly of the optical disc drive according to the present invention.

8 is a side view showing the fastening structure of the clamp assembly of the optical disk drive according to the present invention.

However, in describing the present invention, a detailed description of known functions or configurations will be omitted to clarify the gist of the present invention.

As shown in FIGS. 6 to 7, the optical disk drive 10 including the clamp assembly according to the present invention includes a pickup device (not shown) for reproducing and recording data of the inserted optical disk 110. Spindle motor 130 for seating and rotating the optical disk 110 on the turntable 131, and front rubber (not shown) and rear rubber (not shown) for supporting the support 132 for supporting the spindle motor 130. Not shown), a case (not shown) forming an external shape of the optical disk drive 10, and a tray formed to be ejected from the outside and inserted from the outside to insert the optical disk 110 into the optical disk drive 10 ( 160 and the clamp assembly 170 of the present invention which closely adheres the optical disk 110 to the turntable 131 so that the optical disk 110 does not detach from the turntable 131 when the optical disk 110 rotates. It is composed.

Therefore, when the user places the optical disk 110 in the tray 160 and inserts the optical disk 110 into the optical disk drive 10, the spindle motor 130 and the turntable 131 under the inserted tray 160 are elevated by the lifting means. As shown in FIG. 2, the optical disk 110 mounted on the turntable 131 is coupled to the clamp assembly 170 by a magnet on the spindle motor 130 or the clamp assembly 170. In close contact with the 131, the optical disk 110 may not be separated from the turntable 131 even when the optical disk 110 rotates at a high speed.

The clamp assembly 170 may include a clamp main body 171 contacting the optical disk 110 and the turntable 131, a spindle motor 130, and a clamp assembly 170 to prevent the optical disk 110 from being separated. And a permanent magnet 174 mounted in a magnet seating groove (not shown) of the clamp plate 173 formed of a magnetic body to generate a contact force between the &lt; RTI ID = 0.0 &gt;

The clamp body 171 is injection-molded with plastic, and includes a protrusion 171a inserted into a groove (not shown) in the center of the turntable 131 fixed to the rotating shaft of the spindle motor 130, and the turntable 131. The recessed portion 171b formed to be recessed in contact with the protrusion and the contact surface 171c for contacting the optical disk 110 with a contact force, thereby allowing the optical disk 110 to rotate even if the spindle motor 130 rotates the optical disk 110. 110 prevents the departure from the turntable 131.

The clamp plate 173 is a magnetic material formed into a disc shape by press working, and the media for causing mutual attraction by magnetic force between the clamp assembly 170 and the spindle motor 130 by the permanent magnet 174. Play a role.

On the other hand, the clamp plate 173 and the clamp body 171 is integrally fastened, for this purpose, one side of the clamp plate 173 is formed with a fastening hole 173a penetrating along the thickness direction thereof. An elastic fastening piece 172 protrudes from an upper portion of the clamp main body 171 corresponding to the 173a so as to elastically flow so as to penetrate the fastening hole 173a and be elastically fastened.

That is, the elastic fastening piece 172 is formed in a substantially "a" shape so that it can be hooked through the fastening hole (173a), the inclined contact surface (172a) to be in sliding contact when the front end is inserted into the fastening hole (173a) ) Is formed.

In addition, the elastic fastening piece 172 and the fastening hole 173a as described above may be formed in plural numbers spaced apart at regular intervals along the circumferential direction of the clamp plate 173, the clamp plate 173 and the clamp body ( At least two are preferably formed so that the fastening state of 171 can be stably maintained.

According to the present invention, the elastic fastening piece 172 of the clamp main body 171 is elastically slid to the fastening hole 173a of the clamp plate 173 as shown in FIGS. 8A to 8C. By contacting and fastening, the clamp main body 171 and the clamp plate 173 can be fastened in a one-touch manner.

As such, the present invention eliminates the use of a separate dedicated jig when assembling the clamp assembly 170 and can be assembled in a one-touch manner, thereby improving assembly performance and productivity compared to the conventional art, and shortening the assembly time. Of course, manufacturing costs can be reduced.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope described in the claims.

As described above, according to the clamp assembly of the optical disk drive according to the present invention, by allowing the clamp body and the clamp plate to be assembled in a one-touch manner, it is possible to simplify the assembly process to improve assembly and productivity, assembly time In addition to shortening the manufacturing cost can be reduced.

Claims (3)

An optical disk drive having a spindle motor, a turntable fixed to a rotating shaft of the spindle motor, and a clamp assembly in close contact with the turntable to prevent the optical disk from being seated on the turntable. A clamp plate formed of a magnetic material and formed with a fastening hole penetrating through one side thereof in a thickness direction; A clamp body having a contact surface in close contact with the turntable on one side and an elastic fastening member which is elastically fastened through the fastening hole so that the clamp plate can be fastened to the other side; Clamp assembly of the disk drive. The method of claim 1, Clamp assembly of the optical disk drive, characterized in that the inclined contact surface is formed in the front end of the elastic fastening piece to be in sliding contact with the fastening hole. The method according to claim 1 or 2, Clamp assembly of the optical disk drive, characterized in that the plurality of elastic fastening pieces and fastening holes are formed spaced apart along the circumferential direction of the clamp plate.

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