KR100380162B1 - Clamp device of disk driver - Google Patents

Abstract

The present invention relates to a clamp device of a disk drive, and more particularly, after assembling a spring between the upper case and the lower case, the upper case is moved to fix the disk. Therefore, according to the present invention configured as described above, by detaching and fixing the disk by moving the clamp device while the disk is placed on the clamp case when the disk is attached and detached, the disk can be easily attached and detached, and the occurrence of the disk bending can be prevented.

Description

CLAMP DEVICE OF DISK DRIVER

The present invention relates to a disc drive, and more particularly, to a disc drive clamp device that can be easily attached to and detached from the disc when the disc is attached and detached, so that disc bending does not occur, and assembly of the clamp is easy.

The disk drive is provided with a clamp device that holds the disk so that the disk is not removed from the turntable when the disk is rotated. Types of such clamp devices include a type of holding the disk at the top of the disk and a type of integrally formed on the turntable to hold the disk.

Clamp devices, which are integrally formed on the double turntables and hold the discs, are widely employed in light and thin disc drives. A clamp device of this type is shown in FIGS. 1 and 2.

1 is a perspective view showing the configuration of a clamp device of a conventional disk drive, Figure 2 is a perspective view showing the configuration of a clamp device of a conventional disk drive.

According to FIGS. 1 and 2, a turntable 1 is formed integrally with a rotating part of a spindle motor (not shown), and is coupled to its shaft 2 at the top of the turntable 1 so that the clamp device 10 is provided. It is provided. That is, a cylindrical clamp case 11 into which the center hole 4 of the disk 3 is fitted is provided at the upper end of the turntable 1, and the clamp arms 12 are provided at regular intervals in the clamp case 11. have.

The clamp arm 12 is supported in the centrifugal direction of the clamp case 11 by the spring 13 inside the clamp case 11 so as to protrude to a certain extent with respect to the outer circumferential surface of the clamp case 11. Of course, the clamp arm 12 is formed with a stopper (not shown) to prevent protruding from the outer circumferential surface of the clamp case 11 more than a predetermined time.

The upper and lower ends of the clamp arm 12 are formed to be inclined to guide the disk 3 when the disk 3 is dismounted and to be pushed by the disk 3 so that the clamp arm 12 is relatively clamped. To be moved inward.

Hereinafter, the operation of the clamp device of the conventional disk drive will be described in detail with reference to FIGS. 1 and 2.

First, hold the disc 3 with your thumb and middle finger or ring finger and press the center hole 4 against the clamp case 11. In this case, the edge of the center hole 4 presses the inclined portion of the upper surface of the clamp arm 12, and the horizontal component force of the pressing force moves the clamp arm 12 inward. As the clamp arm 12 is moved as described above, the edge of the center hole 4 of the disk 3 is guided along the inclined surface of the clamp arm 12 by the vertical force of the force acting on the clamp arm 12. The disk 3 is mounted to the clamp case 11.

Once the lower surface of the disk 3 reaches the upper surface of the turntable 1, the clamp arm 12 protrudes from the clamp case 11 again by the restoring force of the spring 13. Accordingly, the lower surface of the front end of the clamp arm 12 is positioned on the upper surface of the edge of the center hole 4 to hold the disk 3.

The ejection of the disk 3 mounted on the turntable 1 will now be described. First, the disk 3 mounted on the turntable 1 is grasped by a finger and pulled upward. In this case, the edge of the center hole 4 of the disk 3 is guided along the lower surface of the inclined tip of the clamp arm 12, and the horizontal component of the force acting on the clamp arm 12 by the disk 3 The clamp arm 12 is moved inside the clamp case 11, thereby allowing the disk 3 to be pulled out of the clamp case 11.

However, the clamp device of the conventional disk drive has a friction between the edge of the center hole of the disk and the clamp arm when the disk is attached and detached, so that a larger force is required for the disk detachable. Therefore, the disk bending occurs when the disk is detached. have.

In addition, the clamp device of the conventional disk drive has another problem that the assembly process is increased because the clamp arm (3) and the spring (3) must be assembled to the clamp case, respectively.

Accordingly, an object of the present invention is to solve the above problems, and when the disk is attached and detached, the disk is moved to the clamp device while the disk is placed on the clamp case to fix and release the disk to facilitate the detachment and detachment of the disk. To prevent the occurrence of

Another object of the present invention is to facilitate the assembly of the upper case and the lower case to reduce the work process of the clamp device.

1 is a perspective view showing the configuration of a clamp device of a conventional disk drive

2 is a cross-sectional view showing the configuration of a clamp device of a conventional disk drive.

Figure 3 is a perspective view showing the configuration of the clamp device of the disk drive according to the present invention

4 is a cross-sectional view showing the configuration of a clamp device for a disk drive according to the present invention.

<Explanation of symbols for main parts of the drawings>

1: turntable 2: shaft

3: disc 4: center hole

100: clamp device 110: lower case

111: first jam jaw 112: first jam projection

113: sliding slope 114: inclined surface

115: first fixing jaw 116: first fixing protrusion

117: shaft guide 120: upper case

121: second jam jaw 122: second jam projection

123: incision surface 124: clamp inclined portion

125: second fixing jaw 126: second fixing protrusion

127: push pin 128: push pin hole

129: through hole 130: spring

Features of the present invention for achieving the above object,

A clamp device comprising a lower case and an upper case to fix the disk on a turntable on which the disk is seated,

The lower case,

A first catching jaw formed at an outer circumference and extending upwardly and having a first catching protrusion on an outer side of the end thereof;

A sliding inclination portion which is an unformed portion of the first catching jaw and has an inclined surface at an outer end of the upper surface of the lower case;

A first fixing jaw formed on a straight line and spaced apart from the sliding inclined portion by a predetermined distance, and having a first fixing protrusion;

And a shaft guide extending upward from the center of the lower case so that the shaft for connecting with the turntable passes.

The upper case,

Spaced apart from the outer periphery so as to correspond to the first catching jaw and extending downward, and having a second catching protrusion inside the end of the extended portion, the second catching protrusion and the first catching protrusion of the first catching jaw. Combined with the second catch jaw,

A plurality of cut surfaces formed by cutting both sides from the outside of the upper case to the inside of the unformed portion of the second catching jaw;

A clamp inclined portion formed on a lower surface of each cut surface and corresponding to the sliding inclined portion of the lower case to move along the inclined surface of the sliding inclined portion to fix the disk;

A second fixing jaw formed on a straight line and spaced apart from the clamp inclined portion so as to correspond to the first fixing jaw, and having a second fixing protrusion coupled to the first fixing protrusion of the first fixing jaw;

A push pin extending upward from a bottom of the second fixing jaw to release the fixing of the second fixing jaw and the first fixing jaw;

A push pin hole formed to protrude to the upper end of the push pin;

It has a through hole formed in the center portion so that the shaft guide of the lower case,

A spring is provided between the lower case and the upper case.

Here, the first locking jaw, the sliding slope, the first fixing jaw, and the shaft guide of the lower case are integrally injection molded.

Here, the second catching jaw, the plurality of cut surfaces, the clamp inclined portion, the second fixing jaw, the push pin, the push pin hole, and the through hole of the upper case are integrally injection molded.

Here, the upper case and the lower case are further provided with a spring projection for fixing the spring.

Hereinafter, the configuration and operation of the clamp device of the disk drive according to the present invention will be described in detail with reference to FIGS. 3 and 4.

3 is a perspective view showing the configuration of the clamp device of the disk drive according to the present invention, Figure 4 is an explanatory view showing the operating state of the clamp device of the disk drive according to the present invention.

3 and 4, the clamp device 100 according to the present invention includes a lower case 110, an upper case 120, and a spring 130.

The lower case 110 includes a first catching jaw 111, a sliding slope 113, a first fixing jaw 115, and a shaft guide 117. The first catching jaw 111 is spaced apart at a predetermined interval on the outer circumference of the lower case 110 and is formed to extend upward, and the first catching protrusion 112 is provided on the outside of the end thereof, that is, on the left side of the drawing.

The sliding slope 113 is an unformed portion of the first catching jaw 111 and is formed with an inclined surface 114 on the left side of the upper surface outer end of the lower case 110 in the drawing. The first fixing jaw 115 is formed to protrude on a straight line spaced apart from the sliding slope 113 by a predetermined distance, and is provided with a first fixing protrusion 116 to the outside of the upper end of the end, that is, to the left in the drawing.

The shaft guide 117 extends upward from the center of the lower case 110 so that the shaft 2 for connecting with the turntable 1 passes therethrough. Here, the first catching jaw 111, the sliding slope 113, the first fixing jaw 115, and the shaft guide 117 of the lower case 110 are integrally injection molded.

The upper case 120 includes a second catching jaw 121, a plurality of cutting surfaces 123, a clamp inclined portion 124, a second fixing jaw 125, a pressing pin 127, It consists of a push pin hole 128 and a through hole 129.

The second catching jaw 121 is formed to extend downwards to be spaced apart from the outer periphery so as to correspond to the first catching jaw 111, and to extend to the lower side, the second catching protrusion on the inside of the end of the formed portion, that is, the right side of the drawing ( 122). The plurality of cutting surfaces 123 are formed by cutting both sides from the outside of the upper case 120 to the inside of the unformed portion of the second catching jaw 121.

Clamp inclined portion 124 is formed on the lower surface of each incision surface 123, the sliding inclined portion of the lower case 110 to move along the inclined surface 114 of the sliding inclined portion 113 to fix the disk (3) Corresponds to 113. The second fixing jaw 125 is formed on a straight line to be spaced apart from the clamp inclined portion 124 by a predetermined distance so as to correspond to the first fixing jaw 115, the first fixing projection 116 of the first fixing jaw 115 It is provided with a second fixing protrusion 126 coupled with.

The push pin 127 is configured to release the coupling between the second fixing protrusion 126 of the second fixing jaw 125 and the first fixing protrusion 116 of the first fixing jaw 115 by external pressure. It extends upward from the bottom of the fixing jaw (125). The push pin hole 128 is formed to protrude to the upper end of the upper case 120 so that the push pin 127 can be manipulated from the outside. Herein, the push pin hole 128 is formed wider than the size of the push pin 127 so that the push pin 127 can be moved.

The through hole 129 is formed in the center portion thereof so that the shaft guide 117 of the lower case 110 passes therethrough. Here, the second catching jaw 121 of the upper case 120, the plurality of cutting surfaces 123, the clamp inclined portion 124, the second fixing jaw 125, the push pin 127, The push pin hole 128 and the through hole 129 are injection molded integrally.

In addition, the spring 130 is formed in a circular shape, between the sliding inclined portion 113 and the first fixing jaw 115 of the lower case 110 and the clamp inclined portion 124 and the second of the upper case 120 It is installed between the fixing jaw (125).

Hereinafter, a method of assembling a clamp device of a disk drive according to the present invention will be described in detail with reference to FIGS. 3 and 4.

First, the through hole 129 of the upper case 120 is inserted into the shaft guide 117 of the lower case 110 while the spring 130 is installed between the upper case 120 and the lower case 110. . When the pressure is applied to the upper case 120 and the lower case 110 in this state, the first locking projection 112 of the first locking jaw 111 of the lower case 110 and the second of the upper case 120. The second locking protrusion 122 of the locking jaw 121 is coupled to complete the clamp device 100.

Hereinafter, the operation of the clamp device of the disk drive according to the present invention will be described in detail with reference to FIGS. 3 and 4.

First, the disk 3 is held by the thumb and the middle finger or the ring finger, and the center hole 4 is freely dropped on the clamp device 100. When the pressure is applied to the upper case 120 in this state, the clamp inclined portion 124 of the upper case 120 formed on the incision surface 123 by the pressure applied to the upper case 120 is inclined sliding of the lower case 110. It moves along the inclined surface 114 of the part 113. Meanwhile, the through hole 129 of the upper case 120 is also moved downward along the shaft guide 117 of the lower case 110. In addition, the second fixing jaw 125 is also moved so that the second fixing protrusion 126 is fixed to the first fixing protrusion 116 of the first fixing jaw 115. At this time, the spring 130 is contracted by the pressure applied from the outside. As a result, the upper case 120 is moved downward, and the incision surface 123 is obliquely moved downward so that the shape of the incision surface 123 is deformed.

Accordingly, the end of the inclined surface 114 of the clamp inclined portion 124 of the upper case 120 comes into contact with the center hole 4 of the disk 3 due to the shape deformation of the incision surface 123, thereby fixing the disk 3. do.

The ejection of the disk 3 mounted on the turntable 1 will now be described. When the disk 3 is fixed to the turntable 1 and the pressure is applied to the push pin 127 protruding from the upper end of the upper case 120, the first fixing jaw 115 by the pressure applied to the push pin 127 The coupling of the first fixing protrusion 116 and the second fixing protrusion 126 of the second fixing jaw 125 is released, the clamp inclined portion 124 of the upper case 120 by the restoring force of the spring 130 Is moved along the inclined surface 114 of the sliding inclination portion 113 of the lower case 110 to the upper right direction, and the first locking projection 112 and the second locking projection 121 of the first locking jaw 111 The movement is stopped due to the second locking protrusion 122 and eventually returns to its original position. Then, since the clamp inclination part 124 which supported the disk 3 is also restored to the original position, the force which supported the disk 3 is released.

In this state, when the disk 3 is lifted off the turntable 1, the disk 3 is easily detached without any obstacle.

Therefore, since there is no force supporting the disk when the disk is detached and detached, the detachment is easily performed without bending the disk.

As described above, according to the clamp device of the disk drive according to the present invention, the disk is easily attached and detached by fixing and releasing the disk by using the clamp device while the disk is placed on the clamp case when the disk is attached or detached, and the disk is bent. Can block the occurrence of

In addition, according to the present invention, since the assembly of the upper case and the lower case is easy, the work process of the clamp device can be reduced.

Claims (4)

A clamp device comprising a lower case and an upper case to fix the disk on a turntable on which the disk is seated, The lower case, A first catching jaw formed at an outer circumference and extending upwardly and having a first catching protrusion on an outer side of the end thereof; A sliding inclination portion which is an unformed portion of the first catching jaw and has an inclined surface at an outer end of the upper surface of the lower case; A first fixing jaw formed on a straight line and spaced apart from the sliding inclined portion by a predetermined distance, and having a first fixing protrusion; And a shaft guide extending upward from the center of the lower case so that the shaft for connecting with the turntable passes. The upper case, Spaced apart from the outer periphery so as to correspond to the first catching jaw and extending downward, and having a second catching protrusion inside the end of the extended portion, the second catching protrusion and the first catching protrusion of the first catching jaw. Combined with the second catch jaw, A plurality of cut surfaces formed by cutting both sides from the outside of the upper case to the inside of the unformed portion of the second catching jaw; A clamp inclined portion formed on a lower surface of each cut surface and corresponding to the sliding inclined portion of the lower case to move along the inclined surface of the sliding inclined portion to fix the disk; A second fixing jaw formed on a straight line and spaced apart from the clamp inclined portion so as to correspond to the first fixing jaw, and having a second fixing protrusion coupled to the first fixing protrusion of the first fixing jaw; A push pin extending upward from a bottom of the second fixing jaw to release the fixing of the second fixing jaw and the first fixing jaw; A push pin hole formed to protrude to the upper end of the push pin; It has a through hole formed in the center portion so that the shaft guide of the lower case, Clamping device of the disk drive, characterized in that the spring is provided between the lower case and the upper case. The method of claim 1, And a first catching jaw, a sliding inclined portion, a first fixing jaw, and a shaft guide of the lower case are integrally injection molded. The method of claim 1, The second locking jaw of the upper case, the plurality of incision surface, the clamp inclined portion, the second fixing jaw, the push pin, the push pin hole, the through-hole is integrally injection molded disk drive Clamp device. The method of claim 1, The upper case and the lower case clamp device of the disk drive, characterized in that further provided with a spring projection for fixing the spring.