KR0167936B1 - A precision clearance controlling device of optical pick-up actuator assembling zig - Google Patents

Abstract

In the present invention, the fixing hole 143 of the yoke plate 132 is fitted to the fitting protrusion 81 and is placed on the upper surface, and between the two inner yoke 142 of the yoke plate 132, an objective lens holder ( 134 is installed in the assembly jig 80 to allow the suspension wire 136 to be fixed to solder on both sides of the objective lens holder 134, the mounting of the suspension wire 136 is fixed to the objective lens holder 134 Horizontal moving member 90 and horizontal moving member 90 coupled to a plurality of guide rails 83 formed horizontally on the assembly jig 80 so as to fit the width and sliding in the horizontal direction, respectively. It is installed on the moving plate 91 is characterized in that consisting of a precision interval adjusting member 110 for precisely and quickly adjusting the horizontal movement amount according to the mounting width of the suspension wire 136 is assembled to the objective lens holder 134 Optical pickup actuation Of Invar precision gap adjusting device, it allows to precisely and easily adjust the width and height of the soldering suspension wires are fixed to both sides of the objective lens holder.

Description

Precision Spacing Device of Assembly Jig for Optical Pickup Actuator

1 is an exploded perspective view of a conventional suspension wire assembly device.

Figure 2 is a perspective view of the state of use of the conventional suspension wire assembly device.

Figure 3 is an exploded perspective view of the precision interval control device of the assembly jig according to the present invention.

Figure 4 is a state of use of the precision interval control device of the assembly jig according to the present invention.

5 is a plan view of the precision gap adjusting device of the assembly jig according to the present invention.

6 is a side view of the precision gap adjusting device of the assembly jig according to the present invention.

* Explanation of symbols for main parts of the drawings

80: assembly jig 90: horizontal moving member

100: vertical gap control member 100: precision gap control member

The present invention relates to an assembly apparatus for an optical pickup actuator, and in particular, a horizontal movement member equipped with a coil fitting hole into which a suspension is fitted is provided with a precision interval adjusting member having a precise adjustment function in an assembly jig, so that the horizontal width of the suspension wire is provided. It is related to the assembly jig spacing device of the optical pickup actuator that makes it possible to adjust the width of the horizontal moving member very precisely and easily by precisely adjusting the assembly jig.

In general, the optical pickup actuator is installed below the disc, which is an optical recording medium of various optical disc players, such as a mini disc player (MDP), a compact disc player (CDP), or a laser disc player (LDP). While detecting the desired track position on the disc while moving in a straight line, laser light is incident on the pit recorded on the disc surface at the detected track position, and then the reflected light is detected through the optical system, and the detected reflected light is changed into a signal to detect the disc surface. A device for reproducing the recorded contents on the screen.

As described above, in order to assemble the optical pickup actuator, an assembly device for holding and pressing various members of the optical pickup actuator is used because the size of the component is small and delicate, and FIG. 1 is a fixed assembly apparatus of the conventional optical pickup actuator. Figure 2 is an exploded perspective view of Figure 2 is a state diagram of the coupling assembly of the conventional optical pick-up actuator, the conventional fixed assembly configuration is fitted from the bottom of the base plate 32 constituting the optical pickup actuator, the base plate 32 and the object The base plate clamping member 38 and the base plate clamping member 38 which determine the installation position of the suspension 36 and prevent the movement of the lens holder 34 in the front and rear and left and right at the same time, are elastically installed on the object While pressing the upper surface of the lens holder 34 elastically, the laser beam passage hole 40 can be interposed therebetween. The objective lens holder pressing member 46 is prevented from being lifted up and down when the objective lens holder 34 installed between the inner yokes 42 installed upright is soldered to the end of the suspension 36. It is shown in the state shown.

In this way, the base plate clamping member 38 has a constant height at a predetermined position on the upper surface, and positioning ribs 48 having the same length as the width of the coil mounting portion 34a on the objective lens holder 34 are formed at both ends in the longitudinal direction. The protruding objective lens holder mounting plate 50 is integrally formed, and is fitted from the bottom of the laser beam passing hole 40 formed on the base plate 32 from the center of the upper surface of the objective lens mounting plate 50. A main plate 54 protruding from the flow preventing boss 52 of a predetermined height to prevent the flow of the 32 and the objective lens holder 34, and a predetermined height upward from both end portions of the main plate 54; It is bent and the front surface shows a structure consisting of a pair of suspension support plates 58 and 58 'having a predetermined number of suspension fitting holes 56 and 56' in accordance with the installation position of the suspension 36. As shown in FIG.

On the other hand, the objective lens holder pressing member 46 is bent down a portion of one end of the hexahedral plate 60 having a predetermined size and fixedly coupled to the upper surface of the one side suspension support plate 58 as a screw 62. , Branched by a predetermined length of the other end to both sides and bent to form an end bent downward so as to be configured to elastically press both sides of the upper surface of the objective lens holder 34.

Looking at the assembly process of the conventional optical pickup actuator fixed assembly device configured as described above, the flow prevention boss on the objective lens holder mounting plate 50 formed on the upper surface of the main plate 54 constituting the base plate holding member 38 ( A pair of suspension support plates 58, 58 'are fitted into the laser beam through hole 40 on the base plate 32 and bent upwards from both ends of the main plate 54. The outer side yokes 42 'on both sides of the base plate 32 are sandwiched between the base plates 32 to prevent the front, rear, and left and right flow of the base plate 32 including the inner and outer yokes 42 and 42'. .

In this state, when the objective lens holder 34 having the objective lens 78 mounted on the image is sandwiched between the respective inner yokes 42 on the base plate 32, the objective lens holder pressing member 46 is placed on the one side. It is fixed to the upper surface of the suspension support plate 58 as a screw 80 so that the upper surface of the objective lens holder 34 is elastically pressed to prevent the objective lens holder 34 and the base plate 32 from flowing. .

As such, the four suspensions 36 are fixed to the coil fitting holes 34b formed on the side surfaces of the objective lens holder 34 in the state in which the objective lens holder 34 is fixed, and then the suspension 36 is attached to the base plate. The suspension 36 is inserted into the coil fitting hole of the objective lens holder 34 while being inserted into each of the suspension fitting holes 56 and 56 'formed on each of the suspension supporting plates 58 and 58' of the clamping member 38, respectively. Make sure 34b is fitted.

In this state, after cutting the suspension 36 over a suitable length in the left and right directions fitted to the coil fitting hole 34b of the objective lens holder 34 by using a cutting tool such as a nipper. The suspension 36 is soldered to a predetermined position to complete the assembly.

However, since the suspension support plates 58 and 58 'having the suspension fitting holes 56 and 56' for guiding the suspension 36 are formed at both ends of the main plate 54, respectively. There are four suspension fitting holes 56 formed in the suspension support plate 58 on the right side and four suspension fitting holes 56 'formed in the suspension support plate 58' on the left side. The number of suspension fitting holes 56, 56 'formed in (58), 58' becomes eight.

However, since the suspension fitting holes 56 and 56 'have to guide the suspension 36 to the objective lens holder 34, the suspension fitting holes 56 and 56' have a very precise processing precision, and thus the cost of drilling the suspension fitting holes 56 and 56 'is high. This is very expensive, and each time the width and height of the suspension 36 mounted on the optical pickup actuator is different, a new base plate holding member 38 is manufactured separately, and the production cost of the base plate holding member 38 is increased every time. There was a downside to being very much heard.

The present invention has been made in view of this point, the horizontal jig for mounting the suspension is installed in the horizontal direction of the mounting jig to install the precision interval adjustment member having a precise adjustment function in the mounting jig to assemble the horizontal width of the suspension wire jig The objective is to adjust the width of the horizontal moving member very precisely and easily by precisely adjusting with respect to.

The purpose of the yoke plate is to be fitted into the fitting jig is placed on the upper surface, and between the two inner yoke of the yoke plate is provided with an objective lens holder is installed on the assembly jig so that the suspension wire is fixed on both sides of the objective lens holder. And horizontally movable members coupled to a plurality of guide rails horizontally formed on the assembly jig and slid in a horizontal direction so as to match the width of the suspension wire soldered and fixed to the objective lens holder. It is installed on the horizontal moving plate, which is a member, and the precision gap adjusting device of the assembly jig for the optical pickup actuator composed of the precision gap adjusting member that adjusts the horizontal movement amount precisely and quickly to the mounting width of the suspension wire assembled to the objective lens holder. This is accomplished by providing.

Hereinafter, the configuration according to the present invention based on the accompanying drawings to be described in detail.

3 to 6, the configuration of the present invention, the fixing hole 143 of the yoke plate 132 is fitted to the fitting protrusion 81 is placed on the upper surface, the yoke plate 132 The objective lens holder 134 is installed between the two inner yoke 142 of the assembly jig (80) for fixing the suspension wire 136 to both sides of the objective lens holder 134, the objective lens holder Horizontal moving member which is coupled to a plurality of guide rails (83) formed horizontally on the assembly jig (80) so as to fit the width of the suspension wire (136) soldered and fixed to the 134, respectively, and slides in the horizontal direction. (90) and the horizontal movement plate (90), which is installed on the horizontal movement plate (90), to adjust the horizontal movement amount precisely and quickly to the mounting width of the suspension wire (136) assembled to the objective lens holder (134) Precise interval adjusting member 110 to let It will be generated.

In addition, the precision interval adjusting member 110 has a plurality of screw holes 99 formed in the horizontal moving plate 91 which is a horizontal moving member 90, and a fixing screw 115 fastened to the screw holes 99. Fixed plate 113 is installed on the side of the horizontal movable plate 91 by the main body 116 is coupled to the fixed plate 113, the display scale 114 is displayed, and is mounted on the main body 116 and fixed The length is protruding and inserted into the through hole 93 of the horizontal movable plate 91 so that the end portion is in contact with the side surface of the blocking plate 82, and is protruded in the main body 116 according to the rotation of the lever 111, 91 is composed of a moving shaft 112 for moving horizontally with respect to the guide rail (83).

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

First, looking at the assembly process of the suspension wire gap adjusting device according to the present invention in detail, the left and right sides of the assembly jig 80 is formed with two blocking plates 82 protruding outward, respectively, the blocking plate 82 Four guide rails 83 are formed on the assembling jig 80 in the direction perpendicular to each other, so that the horizontal moving member 90 and the vertical gap adjusting member 100 are assembled to the respective guide rails 83. Since the assembly direction is different from each other but the configuration is the same so as to describe the horizontal moving member 90, the vertical interval adjusting member 100 and the precision interval adjusting member 110 are assembled to a typical guide rail 83 representative do.

As such, looking at the state in which the precision interval adjusting member 110 is assembled to the horizontal movable plate 91 which is the horizontal movable member 90, the movable shaft 112 is moved to the horizontal movable plate by holding the precision interval adjusting member 110. The hole of the fixing plate 113 is aligned with the screw hole 99 of the horizontal movable plate 91 by inserting it into the through hole 93 of the 91, and then fastening the two fixing screws 115 to the screw hole 99 to precisely space it. The adjusting member 110 is mounted on the horizontal moving plate 91.

Then, the tension spring 96 is horizontally moved by inserting the guide groove 97 of the horizontal movable plate 91, which is the horizontal movable member 90, into the guide rail 83 installed on the assembly jig 80. The fixing jaw 98 of the 91 and the locking jaw 84 of the blocking plate 82 are respectively hooked so that the horizontal movable plate 91 is pulled toward the blocking plate 82.

Then, the horizontal spacing adjusting screw 95 is coupled to the through hole 98, and then the first moving piece 101, which is the horizontal moving member 100, is moved to the vertical guide groove of the horizontal moving plate 91. 92) to join from top to bottom.

In addition, after the coil spring 103 is fitted on the first moving piece 101 through the vertical guide groove 92, the second moving piece 104 enters the vertical guide groove 92 again so that the coil spring 103 is inserted into the coil spring 103. The vertical gap adjusting member 100 is horizontally moved by placing the vertical gap adjusting screw 106 on the threaded portion 94 formed in the vertical guide groove 92 using a wrench. Install it in

In this way, the optical pickup to be assembled after the four horizontal guide member (83) on the assembly jig (80), the horizontal moving member 90, the vertical interval adjusting member 100 and the precision interval adjusting member 110 are installed, respectively. According to the type of actuator, each member is adjusted to correspond to the width and height in consideration of the width and height of the suspension wire 136 soldered to the objective lens holder 134.

First, in consideration of the width of the suspension wire 136, while rotating the lever 111, which is the precision interval adjusting member 110, an appropriate number of times, while looking at the display scale 114 displayed on the main body 116, When the moving shaft 112 is moved to correspond to the width, the horizontal moving plate 91 is adjusted so that the lever 111 is tightened or released. The horizontal moving plate 91 is horizontal along the guide rail 83. By appropriately moving to adjust the width of the horizontal plate 91 to fit the assembly width of the suspension wire 136.

At this time, since the tension spring 96 is pulling the horizontal movable plate 91 with a suitable tension force, the horizontal movable plate 91 moves outward when the lever 111 is tightened to protrude the moving shaft 112 by a certain distance. While the width of the horizontal movable plate 91 is increased and the lever 111 is released, the movable shaft 112 is recessed into the main body 116 while the horizontal movable plate 91 is moved inward by the tension spring 96. As the width of the horizontal plate 91 is reduced while moving, the width of the suspension wire 136 is adjusted appropriately.

On the other hand, if you want to adjust the height of the suspension wire 136 by compressing or loosening the coil spring 103 by tightening or loosening the vertical spacing adjusting screw 106, the vertical spacing adjusting member 100, using a hexagon wrench. The height between the first coil fitting hole 102 and the second coil fitting hole 105 into which the suspension wire 136 is fitted is adjusted by appropriately adjusting the distance between the first moving piece 101 and the second moving piece 104. Make sure to adjust the distance between them.

In this way, the assembly jig (after the precise adjustment of the width and height of the first and second coil fitting holes 102 and 105 of the first and second moving pieces 101 and 104 to which the suspension wire 136 is fitted) is performed. After placing the yoke plate 132 on the plate 80 so that the fixing hole 143 is fitted to the fitting protrusion 81, the objective lens holder 134 is disposed between the two inner yokes 142 of the yoke plate 132. Of the coil mounting portion 134a is fitted, and the objective lens 178 is attached to the upper surface of the objective lens holder 134.

In this state, the suspension wire 136 is inserted into the coil mounting grooves 134a formed on both sides of the objective lens holder 134 by inserting the suspension wires 136 into the first and second coil fitting holes 102 and 105 to assemble and solder the coils to the coils. Let's do it.

Therefore, the conventional suspension wire assembly apparatus according to the present invention, unlike the manufacturing jig manufacturing cost is very high by making a separate assembly jig according to the width and height of the suspension wire soldered to the objective lens holder of the optical pickup actuator When the precision gap adjusting device of the assembly jig is used, a blocking plate and a guide rail are formed on both sides of the assembly jig, and a horizontal movable member that moves horizontally along the guide rail is mounted, and the horizontal movable member is mounted by a hexagon wrench. In order to precisely and accurately adjust the distance between the first coil fitting hole and the second coil fitting hole formed in the first moving piece and the second moving piece, which are fastened to the screw portion formed in the vertical guide groove of the horizontal moving plate, The precision gap adjusting member is installed on the horizontal moving plate of the direction moving member to rotate the lever to the main body. Read the displayed scale, and move the moving shaft in proper quantity to adjust the width of the horizontal transfer plate to the width of the suspension wire, and solder the suspension wire to both sides of the objective lens holder, and use one assembly jig to adjust the various widths and heights. It is a very useful invention to significantly reduce the production cost of the assembly jig by simply and accurately assembling the suspension wire to the optical pickup actuator having.

Claims (2)

The fixing hole 143 of the yoke plate 132 is fitted to the fitting protrusion 81 and is placed on the upper surface, and the objective lens holder 134 is disposed between the two inner yoke 142 of the yoke plate 132. In the assembling jig 80 installed to allow the suspension wire 136 to be fixed to the both sides of the objective lens holder 134, matching the width of the suspension wire 136 to be soldered fixed to the objective lens holder 134. In order to be coupled to a plurality of guide rails (83) formed horizontally on the assembly jig (80), the horizontal movable member (90) and the horizontal movable plate (90) for sliding in the horizontal direction, the horizontal movable member ( Optical pickup, characterized in that consisting of a precision interval adjusting member 110 is installed on the 91 to adjust the horizontal movement amount precisely and quickly according to the mounting width of the suspension wire 136 is assembled to the objective lens holder 134 Assembly paper for actuator His precision spacing device. According to claim 2, The precision interval adjustment member 110 is fixed to the plurality of screw holes (99) formed in the horizontal movable plate 91 is a horizontal moving member 90, the screw hole (99) A fixed plate 113 installed on the side of the horizontal movable plate 91 by screws 115, a main body 116 coupled to the fixed plate 113, and displaying a display scale 114, and the main body 116; It is attached to the predetermined length and is inserted into the through-hole 93 of the horizontal transfer plate 91, the end portion is in contact with the side of the blocking plate 82, and it is raised in the main body 116 in accordance with the rotation of the lever 111 Precision moving device of the assembly jig for an optical pickup actuator, characterized in that consisting of a moving shaft 112 for moving the horizontal plate 91 horizontally with respect to the guide rail (83).