KR200319199Y1 - Jig for assembling suspension wires for optical pickup actuators - Google Patents

Abstract

The present invention relates to a jig for assembling a suspension wire of an optical pickup drive device that can increase assembly precision when assembling and soldering a suspension wire and to automate the assembly and soldering process. 1 body portion 110; A second body part 120 having first and second fixing parts 130 and 140 for fixing the lens holder and the wire holder and fixed to the first body part 110; First and second fixed arms hinged to the second body part 120 to elastically support the lens holder and the wire holder fixed to the first and second fixing parts 130 and 140, respectively. 150 and 160; A wire fixing hole 172 is formed, and is composed of a pair of wire fixing blocks 170 which are guided to the guide shaft 111 and elastically close to the second body portion 120, and the suspension wire Is firmly fixed and soldering is performed to increase assembly precision, and the jig is configured to automate the fixing, releasing, and drawing out of assembly parts.

Description

Jig for assembling suspension wires for optical pickup actuators

The present invention relates to a device for assembling the suspension wire of the optical pickup drive device, and in particular, the assembly precision can be increased during assembly soldering of the suspension wire, and the assembly of the suspension wire of the optical pickup drive device can be automated. It is about a dragon jig.

In general, optical pickup is a key component that enters a driver that reads and writes CD-R, CD-RW, DVD, etc., and uses light to discriminate optical differences on the surface of optical discs to read information or generate optical differences. Information recording operation is performed. The optical pickup includes an objective lens for irradiating an optical beam to a signal track of the optical disc, and an objective lens for the optical spot to follow the center of the signal track to the surface vibration and eccentricity of the optical disc. It includes a drive device.

Such an objective lens driving apparatus is called a pickup actuator and is driven to operate the objective lens in the focusing and tracking directions. The focusing operation is to drive the objective lens up and down so that the light beam focused on the objective lens falls within the depth of focus at the signal track of the optical disc, and the tracking operation is to drive the light beam focused at the objective lens along the center of the signal track of the optical disc. will be.

In general, an optical pickup driving device uses a coil and a magnet to move an objective lens up and down (focusing servo) and left and right (tracking servo) by the current flowing through the coil and the electromagnetic force between the magnet.

Hereinafter, a general optical pickup driving apparatus will be described.

Referring to FIG. 1, a general optical pickup driving apparatus includes a lens holder 10 including an objective lens 11, a tracking coil 12, and a focusing coil 13; A wire holder 20 supporting the lens holder 10 by a suspension wire 40; The wire holder 20 is fixed and comprises a yoke plate 30 provided with a magnet for forming a magnetic path.

The tracking coil 12 and the focusing coil 13 are wound around the lens holder 10, and the tracking coil 12 and the focusing coil 13 are wound on a coil PC 14 fixed to both sides of the lens holder 10. Connected.

The lens holder 10 is connected to the wire holder 20 by the suspension wire 40 and is installed to be movable on the yoke plate 30.

In detail, one end of the suspension wire 40 is soldered and fixed to the coil PC 14 of the lens holder 10, and the other end is soldered and fixed to the wire holder PC 21.

In this case, the suspension wire 40 passes through the wire holder 20, and a highly viscous damping gel 22 is injected into the wire holder 20 so that the resonance of the suspension wire 40 is applied to the damping gel 22. To be quickly attenuated.

The current applied to the wire holder PC 21 from the signal processor is transmitted to the tracking coil 12 and the focusing coil 13 through the suspension wire 40 and the coil PC 14.

The wire holder 20 is fixed to the yoke plate 30, and a pair of first and second yokes 31 and 32 are formed at both sides of the lens holder 10, where the objective lens 11 is located. And a pair of third and fourth yokes 33 and 34.

The pair of first and second yokes 31 and 32 and the pair of third and fourth yokes 33 and 34 are each provided with magnets 35 and 36 to form a magnetic path, and are formed on the yoke plate. Electromagnetic force acts on the lens holder 10 according to the magnetic field and the current applied to the tracking coil 12 or the focusing coil 13 wound on the lens holder 10.

In the optical pickup driving device configured as described above, the lens holder 10 having the objective lens 11 fixed thereto is supported by the suspension wire 40 so as to be spaced apart from the yoke plate 30. When the lens holder 10 is soldered in an inclined state in the process of soldering to the 14 and the wire holder PC 21 by soldering, a problem occurs in that accurate focusing is not performed.

In addition, even when the suspension wire is bent or bent during assembling and soldering of the suspension wire, driving of the focusing direction of the lens holder also does not coincide with the optical axis, thereby preventing accurate focusing.

The present invention is to solve the above drawbacks, an object of the present invention is to provide a jig for assembling the suspension wire of the optical pickup driving device that can increase the assembly precision of the suspension wire during the assembly and soldering process of the suspension wire.

Still another object of the present invention is to provide a jig for assembling a suspension wire of an optical pickup driving apparatus capable of automating the assembly and soldering process of the suspension wire.

1 is a perspective view showing a general optical pickup driving device,

2 is an exploded perspective view of a jig for assembling the suspension wire of the present invention,

3 is a cross-sectional view taken along line AA ′ of FIG. 2;

4 is a cross-sectional view taken along the line B-B 'of FIG.

5 is a block for fixing the wire of the jig for assembling the suspension wire of the present invention

Side View,

6 is an assembled perspective view of a jig for assembling the suspension wire of the present invention,

7 is applicable to the jig for assembling the suspension wire of the present invention

Drawing showing a block for withdrawal.

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

110: first body portion 120: second body portion

130: First Government 140: Second Government

150: first fixed cancer 160: second fixed cancer

170: wire fixing block 172: wire fixing hole

Suspension wire assembly jig of the optical pickup drive device of the present invention for achieving this purpose includes a first body portion provided with a guide shaft; A second body part provided with first and second fixing parts for fixing the lens holder and the wire holder, the second body part being fixed to the first body part; First and second fixed arms hinged to the second body portion to elastically support the lens holder and the wire holder fixed to the first and second fixing parts, respectively; A hole for fixing the wire is formed, and is achieved by a pair of wire fixing blocks that are guided to the guide shaft and elastically close to the second body portion.

2 to 6 is a view showing a jig for assembling the suspension wire of the optical pickup drive device of the present invention, Figure 2 is an exploded perspective view of the jig for assembling the suspension wire of the present invention, Figure 3 is a cross-sectional view of the AA 'line of FIG. 4 is a cross-sectional view of the line BB ′ of FIG. 2, and FIG. 5 is a side view of the wire fixing block of the suspension wire assembly jig according to the present invention, and FIG. 6 is an assembly perspective view of the jig for suspension wire assembly according to the present invention. 7 is a view showing a drawer block applicable to the jig for assembling the suspension wire of the present invention.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Suspension wire assembly jig of the optical pickup drive device of the present invention includes a first body portion 110 provided with a guide shaft 111; A second body part 120 for fixing the lens holder and the wire holder; First and second fixed arms 150 and 160 for elastically supporting the lens holder and the wire holder, respectively; It may be composed of a wire fixing block 170 is formed with a fixing hole 172 for fixing the suspension wire.

The first body part 110 and the second body part 120 are integrally formed, and the guide shaft fixing holes 112 and 121 are formed so that the first and second body parts 110 and 120 have guide shafts. 111 is penetrated in the transverse direction and fixed.

A support block 122 for supporting the wire fixing block 170 is provided on the upper portion of the second body part 120, and a lens holder and a wire holder are inserted into both sides of the support block 122, respectively. The first fixing part 130 and the second fixing part 140 which are fixed are provided.

The first fixing part 130 has a plurality of first supporting protrusions 131 protruding to fix the lens holder.

Preferably, the height and distance of the support protrusion may be set such that the support protrusion 131 is inserted into and supported in the yoke insertion groove formed in the lens holder, which may be determined according to the specification of the lens holder to be assembled.

The second fixing part 140 has a second supporting protrusion 141 protruding to fix the wire holder.

The second support protrusion 141 may be composed of one or more pieces according to the standard of the wire holder to be assembled.

Meanwhile, the first fixing part 130 and the second fixing part 140 are provided with drawing means for drawing out the lens holder and the wire holder, and the soldering of the suspension wire between the lens holder and the wire holder is terminated. The lens holder and the wire holder are withdrawn from the 2 fixing parts 130 and 140.

Specifically, referring to FIG. 3, first and second guide holes 132 and 142 are formed in the second body part 120 along the first and second fixing parts 130 and 140 in the vertical direction. The first and second guide holes 132 and 142 are provided with pull-out rods 133 and 143, each of which has a lower end elastically supported by springs 134 and 144.

The withdrawal rods 133 and 143 and the first and second guide holes 132 and 142 are provided with engaging protrusions, so that when the withdrawal rods 133 and 143 are operated over a predetermined stroke, the first and second guide holes ( It would be desirable to be configured so as not to be removed through the upper or lower openings of 132 and 142.

As described above, when the configured pull-out rods 133 and 143 push the pull-out rods 133 and 143 through the lower openings, the pull-out rods 133 and 143 are the first and second fixing parts 130 ( Protruding to the top of the 140, and when the force applied to the withdrawal rods 133, 143 is removed, the withdrawal rods 133, 143 by the restoring force of the spring 134, 144 is returned to its original position.

The second body part 120 includes first and second brackets 123 and 124 having shaft holes 123a and 124a formed outside the first and second fixing parts 130 and 140. In the shaft holes 123a and 124a of the two brackets 123 and 124, the first and second fixed arms 150 and 160 for fixing and supporting the lens holder and the wire holder from above are return springs 151 and 161. It is elastically supported and arranged by).

The first and second fixed arms 150 and 160 are provided with holes 152 and 162 to be axially coupled by the shaft to the shaft holes 123a and 124a of the first and second brackets 123 and 124. .

The first and second fixed arms 150 and 160 are provided with rollers 153 and 163 at the lower end thereof to facilitate the rotation operation.

Referring to FIG. 4, the guide shaft 111 of the first body part 110 is provided with a pair of wire fixing blocks 170, the upper end of the wire fixing block 170 and the first body part 110. Between the springs 171 is provided, the wire fixing block 170 is elastically in close contact with the second body portion 120 by the elastic force of the spring 171. The spring body 171 is inserted into and fixed to the first body part 110 to form a spring inlet groove for preventing separation.

A wire fixing hole 172 is formed in the upper inner surface of the wire fixing block 170, and the wire fixing hole 172 has a coil PC terminal side of the lens holder to which both ends of the suspension wire are soldered, and a wire holder. It is located on the linear axis consisting of the side of the PC terminal.

Reference numeral 110a is formed on the first body portion 110 is a reference fixture for fixed setting the assembly jig of the present invention to the external device.

As shown in FIG. 5, the wire fixing hole 172 is formed with an opening 172a extending in the second fixing direction in which the wire holder is located, whereby the suspension wire passing through the wire holder is fixed to the hole ( It will be desirable to configure the suspension wire to facilitate insertion upon insertion into 172.

The diameter of the wire fixing hole 172 is determined according to the diameter of the suspension wire, and it may be desirable to prevent the wire from flowing in the wire fixing hole when the suspension wire is inserted.

On the other hand, the lower end of the wire fixing block 170 is provided with a roller 173, the lower portion of the first body portion 110 in which the roller 173 is located, the groove 1 so that the roller (173) is exposed to the outside 125) is formed.

When the roller 173 is pressed through the groove 125 formed in the lower portion of the first body part 110, the wire fixing block 170 is spaced apart from the second body part 120 to fix the wire fixing hole 172. Is open.

Looking at the operation relationship of the jig for assembling the suspension wire of the optical pickup drive device of the present invention configured as described above are as follows.

After pressing the lower ends of the first fixing arm 150 and the second fixing arm 160 to open the upper ends of the first fixing part and the second fixing part, the lens holder 10 and the wire holder 20 are firstly opened. Insert and fix the fixing part and the second fixing part respectively.

When the first fixed arm 150 and the second fixed arm 160 are placed after the lens holder 10 and the wire holder 20 are correctly positioned, the first fixed arm 150 and the second fixed arm which are elastically supported. The 160 is fixed to the upper end by pressing the lens holder 10 and the wire holder 20 while being returned to the original position.

Next, the suspension wire is inserted into the wire holder 20 and passes through the wire fixing hole 172 formed by the supporting block 122 and the wire fixing block 170 to the coil PC terminal side of the lens holder 10. Position the end of the suspension wire.

When the insertion of the suspension wire is completed, the suspension wire is soldered and fixed at the coil PC of the lens holder 10 and the PC of the wire holder 20.

When the soldering is completed, the wire fixing block 170 through the groove 125 formed on the lower end of the first body portion 110 while pressing the lower ends of the first fixed arm 150 and the second fixed arm 160. Pressing the roller 173 provided at the bottom of the), releases the first and second fixed arms 150 and 160 fixedly supporting the lens holder 10 and the wire holder 20, the support block 122 The wire fixing block 170 is spaced apart so that the wire fixing hole 172 into which the suspension wire has been inserted is opened.

The lens holder 10 and the wire holder 20 having completed the solder assembly are lifted upward and taken out.

Meanwhile, as shown in FIG. 7, the first pressing protrusion 210 for pressing the rollers of the first and second fixed arms and the second pressing protrusion for pressing the rollers provided under the wire fixing block. By using the assembly drawing block provided with the 220, the drawing of the lens holder 10 and the wire holder 20 to which the suspension wire is soldered and fixed can be made easier.

An inner surface of the first pressing protrusion 210 is formed with an inclined surface, and the rollers of the first and second fixed arms rotate along the inclined surface to press the lower ends of the first and second fixed arms to release the fixing of the lens holder and the wire holder. do.

An inclined surface is formed on the outer surface of the second pressing protrusion 220, and the wire fixing block is moved outward while the roller provided at the lower portion of the wire fixing block rotates along the inclined surface, thereby opening the wire fixing hole. .

Such a process can be automated, and the withdrawal of the solder holder fixed lens holder 10 and the wire holder 20 can be made as follows.

In the jig according to the present invention, a separate actuator is provided at the lower portion of the first body portion 110, and the extraction rods 133 and 143 provided at the lower portion of the first body portion 110 by the operation of the actuator are vertical. The lens holder 10 and the wire holder 20 fixed to the first and second fixing parts 130 and 140 may be removed by being operated upward.

Suspension wire assembly jig of the optical pickup drive device of the present invention as described above can increase the assembly precision because the suspension wire is firmly fixed between the lens holder and the wire holder, the assembly precision can be increased, and the withdrawal of the assembly parts after soldering fixed It is easy to increase work efficiency.

In addition, it is easy to fix and release the assembly parts, and in particular, the withdrawal means are provided to facilitate the withdrawal of the assembly parts during the automation process, it is easy to automate the soldering process of the suspension wire to increase the product productivity It is

Claims (4)

A first body portion provided with a guide shaft; A second body part provided with first and second fixing parts for fixing the lens holder and the wire holder, the second body part being fixed to the first body part; First and second fixed arms hinged to the second body portion to elastically support the lens holder and the wire holder fixed to the first and second fixing parts, respectively; Suspension wire assembly jig for the optical pickup driving device is formed, the wire fixing hole is formed, and a pair of wire fixing block is guided to the guide shaft elastically in close contact with the second body portion. The suspension of the optical pickup driving apparatus according to claim 1, wherein a roller for rotating the first and second fixed arms about a hinge axis is further configured to the first and second fixed arms. Jig for wire assembly. The jig for suspension wire assembly of the optical pickup drive device according to claim 1, wherein a roller capable of linearly driving the fixing block along the guide shaft is further configured to the fixing block. The jig for suspension wire assembly of the optical pickup driving device according to claim 1, wherein the first fixing part and the second fixing part further include extracting means for extracting the lens holder and the wire holder.