KR20080029496A - Assembling jig for camera module and assembling method for using it - Google Patents

Abstract

A camera module assembling jig and a camera module assembling method using the same are provided to improve productivity by shortening a camera module package fabrication process and prevent a driving unit from being damaged when a VCA(Voice Coil Actuator) type camera module is assembled. A lower jig(110) is supported with a certain height from the ground and allows a PCB(Printed Circuit Board) to be mounted thereon. Camera module bodies(200) are arranged in an array at equal intervals on an upper surface of the PCB mounted on the lower jig. A platy upper jig(120) covers an upper surface of the lower jig and includes a plurality of through holes into which lens barrels(210) are inserted. A lower end of an adjustment knob(140) is inserted through the through hole of the upper jig, and an upper portion of the lens barrel is combined with the adjustment knob to provide a rotational force to the adjustment knob.

Description

Assembling jig for camera module and assembling method for using it}

1 is a cross-sectional view of a camera module equipped with a conventional autofocus function.

2 is an assembled perspective view of a camera module equipped with a conventional autofocus function.

Figure 3 is an exploded perspective view of the camera module assembly jig according to the present invention.

4 to 6 is an assembly process of the camera module assembly jig according to the present invention.

7 is a cross-sectional view of an adjustment knob coupled to the assembly jig according to the present invention.

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

110. Lower jig 120. Upper jig

121. Through hole 130. Printed circuit board

140. Adjustment knob 143. Stopper

200. Camera Module Body 210. Lens Barrel

The present invention relates to a jig for assembling a camera module, and more particularly, a lens mounted through a top jig seated on a lower jig and mounted on a lower jig of a voice coil actuator (VCA) type camera having an autofocus function. By allowing the barrel to be coupled through the adjustment knob, the present invention relates to a camera module assembly jig that facilitates focus adjustment and reduces foreign material generation.

In recent years, portable terminal products in which a camera is integrated into a portable terminal such as a mobile phone or a PDA have been mainly released, and consumers are mainly looking for terminals equipped with an integrated camera having a higher pixel and various functions. The cameras with built-in terminals are configured to attach a lens to an imaging device such as a CCD or a CMOS to photograph a subject, and to photograph the photographed subject data through a predetermined recording medium.

In recent years, portable terminals such as mobile phones and PDAs are being used as multi devices equipped with music, movies, TV, and game functions as well as simple telephone functions, leading to the development of such multi devices. As one of the camera modules (Camera Module) is the most representative. The camera module is changed from the existing 300,000 pixels (VGA level) to the high pixel center of 8 million pixels, and at the same time, it is changed to a structure that can implement various additional functions such as an auto focus function (AF) and an optical zoom. have.

In particular, in the case of a portable terminal equipped with a camera module having an autofocus function (Autofocus: AF), the demand is rapidly increasing in that it is possible to provide a high quality image with focusing regardless of the focal length of the subject. Doing.

Here, the configuration of a conventional camera module of a general type having an autofocus function will be briefly described as follows.

1 is a cross-sectional view of a camera module with a conventional autofocus function. As shown in the drawings, a conventional camera module 1 is fixed to a casing 2 and a casing 2, and is an image for capturing an image of a subject. A lens group 4 composed of an image capturing unit 3, a plurality of lenses 5 for projecting an image of a subject to be transmitted to the image capturing unit 3, and each of the lens groups 4. A lens barrel 6 for aligning the lenses in the optical axis direction, and a lens barrel 6 for driving the lens barrel 6 in the optical axis direction to change the magnification of the lens groups 4 and to sharpen the image captured by the image capturing unit. A driving unit 7 for performing a function, an initial position fixing unit for fixing the barrel 6 to a predetermined braking force at an initial position, and a control unit for controlling the driving unit 7.

The image capturing unit 3 includes an image sensor 3a for converting an optical signal of a subject through the lens group 4 into an electrical signal, a protective glass 3b for protecting the image sensor 3a, and the It consists of the board | substrate 8 with which the image sensor 3a is mounted.

The red barrel 6 is equipped with an infrared cut filter for blocking the infrared rays passing through the lens group (4).

In addition, the driving unit 7 is wound around the lens barrel 6 and is fixed to the coil 9 receiving current from the control unit, and the casing 2 fixed to the horizontal portion of the coil 9 The magnetic flux is made of a permanent magnet 10 is divided in polarity, the groove portion is formed in the casing (2) so that the coil is inserted and bonded to the groove portion so that the coil (9) does not protrude.

A yoke 11 is mounted between the permanent magnet 10 and the lens barrel 6 to circulate magnetic flux of the permanent magnet 10.

Referring to the appearance of the conventional camera module having such a structure based on the assembled perspective view of the conventional camera module of Figure 2 shown below are as follows.

As shown, the conventional camera module 1 includes a casing 2 having the lens group 4 mounted therein, a bracket 2a supporting the casing 2, and a lower portion of the bracket 2a. The printed circuit board 8 includes an image sensor 3a, a driving circuit, and a plurality of passive elements.

On the upper surface of the printed circuit board 8, the bracket 2a and the casing 2 are sequentially stacked and coupled, and at this time, permanently transports the lens barrel 6 mounted on the casing 2 up and down. A drive unit 7 composed of a magnet 10 and a coil 9 is mounted on a printed circuit board 8 in the casing 2, and the drive unit 7 is controlled by a drive circuit that generates a high current.

On the other hand, the lens barrel (6) inserted into the casing (2) is provided with a screw portion (6a) on the outer peripheral surface is inserted into the casing (2) and coupled by the rotation of the lens barrel (6) and at the same time the lens barrel (6) The focus adjustment for the lens group 4 in the barrel 6 is made by adjusting the height of the?

However, in the conventional camera module 1, as the lens barrel 6 is coupled into the casing by manual labor by the operator, the operator lifts the camera module body and the lens barrel 6 of the VCA method by hand. It will be fastened directly.

At this time, the lens barrel (6) in the process of fastening may be damaged to the drive unit (7) consisting of the coil 9 and the permanent magnet 10 employed in the camera module of the VCA method, and a constant rotational force is transmitted It is difficult to mount the lens barrel 6 inclined, there was a problem that the tilt (tilt) occurs.

In addition, the conventional camera module has a disadvantage that the foreign material flowing from the outside of the camera module can be introduced into the camera module at the same time as the lens barrel 6 is coupled by the manual operation of the lens barrel 6, the assembly takes a long time The problem that productivity falls is pointed out.

Accordingly, the present invention has been made to solve the above-mentioned disadvantages and problems caused during the conventional camera module assembly process, the lower jig and the upper jig to be covered on the lower jig is provided, the camera module is mounted, the camera module It is an object of the present invention to provide a camera module assembly jig for easily mounting the barrel while preventing the inflow of foreign materials when the lens barrel is mounted by combining the lens barrel inserted therein with the stop knob.

The object of the present invention, the lower jig to which the printed circuit board is mounted on the upper surface, the camera module body arranged in an array (arrey) at equal intervals on the upper surface of the printed circuit board on the lower jig, and the upper surface of the lower jig It is achieved by a camera module assembly jig including a plate-shaped upper jig which is covered with a plurality of through holes into which a lens barrel is inserted, and an adjustment knob inserted at a lower end to engage the lens barrel through the through holes of the upper jig.

The lower jig is supported at a predetermined height on the ground to fix a plate-shaped printed circuit board on an upper surface thereof, and a plurality of camera module bodies are arranged on the upper surface of the printed circuit board at equal intervals.

The front surface of the printed circuit board is covered with an upper portion of the lower jig, and a plurality of through holes are formed at positions corresponding to the lens barrel insertion holes of the camera module body arranged on the printed circuit board.

At this time, the printed circuit board and the upper jig is coupled to a fixture protruding from each corner of the lower jig is fixed in position.

Meanwhile, an adjustment knob is provided to rotate and fasten the lens barrel inserted through the through hole of the upper jig covered on the lower jig.

The adjustment knob is composed of a rotary knob, a lens fitting extended to the bottom and a stopper coupled to the lens fitting, and the upper end of the lens barrel is coupled to the lower end of the barrel mounting to the lens by the rotation of the rotary knob Make sure the barrel is fastened inside the camera module body.

At this time, the stopper is coupled to the lens barrel coupled to the camera module body by the bottom surface is in contact with the top surface of the upper jig always has the same focal length.

According to the present invention, a plate-shaped printed circuit board is fixed to an upper surface of an upper jig, and a plurality of camera module bodies are mounted on the upper surface of the printed circuit board at equal intervals. At this time, the upper jig is provided with a plurality of through holes in the upper state in the camera module body is seated, the lens barrel is inserted through the through holes of the upper jig.

Then, the lower end of the barrel mounting opening extending through the through hole to the lower end of the adjustment knob is inserted and the lens barrel is fastened to the inside of the camera module body by the rotation of the rotation knob.

At this time, the lens barrel is inserted through the through hole of the upper jig in the state that the upper portion is coupled to the lower end of the barrel mounting opening of the adjustment knob can be fastened.

Matters concerning the operational effects including the technical configuration of the camera module assembly jig according to the present invention will be clearly understood by the following detailed description with reference to the drawings in which preferred embodiments of the present invention are shown.

First, Figure 3 is an exploded perspective view of the camera module assembly jig according to the present invention, Figures 4 to 6 are assembly process diagrams of the camera module assembly jig according to the present invention.

As shown, the camera module assembly jig 100 of the present invention is the lower jig 110 and the upper jig 120 in the form of a flat plate, interposed therebetween, the plurality of camera module body 200 is seated on the upper surface It consists of a printed circuit board 130, the adjustment jig 140 for coupling the lens barrel 210 inserted through the upper jig 120.

The lower jig 110 is supported by the support leg 111 to a predetermined height with respect to the ground, and for fixing the upper jig 120 and the printed circuit board 130 at each corner of the upper surface and any point therein. Fixtures 112 and 113 protrude in the form of protrusions.

The upper surface of the lower jig 110 is in close contact with the plate-shaped printed circuit board 130, the plurality of camera module body 200 on the upper surface of the printed circuit board 130 is formed in an array (arrey) at equal intervals. Are arranged. Here, the camera module main body 200 arranged on the printed circuit board 130 includes a camera module main body 200 of various types such as a COB type and a COF type as well as a VCA type camera module 200 having an auto focus function. Can be seated.

At this time, the printed circuit board 130 is inserted into the fixing fixture 113 protruding on the lower jig 110 at four corners when the camera module main body 200 is seated, or the lens barrel to the camera module main body 200. When mounting the 210 to be fixed.

In addition, the upper jig 120 is formed in a plate shape similar to the lower jig 110, the lower surface is in close contact with the upper surface of the lower jig 110, a plurality of through-holes 121 are formed over the entire surface.

The through hole 121 is formed through the position corresponding to the camera module main body 200 seated on the upper surface of the printed circuit board 130, more precisely the lens barrel formed in the center of the camera module main body 200 It is drilled at a position perpendicular to the insertion space.

At this time, the through hole 121 has a diameter equal to or slightly larger than the outer circumferential surface diameter of the lens barrel 210 inserted therein, and has a lower side formed to a size into which the camera module main body 200 can be inserted. It is formed according to the appearance of the camera module assembled in the various manners described above.

Thus, the upper jig 120 is covered with the camera module main body 200 seated on the printed circuit board 130 into the through hole 121 and is covered on the lower jig 110 at the same time. The fasteners 112 protruding at the four corners of the jig 110 are fixed without flow by being inserted into the holes 122 provided at the four corners of the upper jig 120.

Meanwhile, a cylindrical lens barrel 210 is inserted into the plurality of through holes 121 formed in the upper jig 120, and the lens barrel 210 inserted into the through holes 121 rotates the handle 141. ) Is coupled to the camera module body 200 by an adjustment knob 140 attached thereto.

Here, the upper portion of the lens barrel 210 is formed with a plate 211 of the hexagonal bolt shape, the plate 211 is preferably formed of a polygon including a hexagon and a square. This is for the purpose of generating a torque that can be easily rotated when transmitting the rotational force of the adjustment knob 140 through the plate 211.

7 is a cross-sectional view of the adjustment knob is coupled to the camera module assembly jig according to the present invention, as shown in the adjustment knob 140, the rotary knob 141 and the barrel mounting portion 142 extended to the lower portion thereof. Consists of a stopper 143 mounted at any position of the barrel mounting opening 142.

The lower end of the barrel mounting hole 142 is inserted or mounted to the entire or part of the lens barrel 210, the wrench-shaped fixing groove for coupling to the polygonal plate 211 provided on the lens barrel 210 upper portion (Not shown) is provided.

The adjustment knob 140 is a state in which the lens barrel 210 is inserted through the through hole 121 of the upper jig 120 or the lens barrel 210 is coupled to the barrel mounting hole 142. The lower end is inserted into the through hole 121.

The barrel mounting holes 142 are vertically coupled to the lens barrel 210 is attached to the lower end, and rotates the rotation knob 141 of the upper end to rotate the lens barrel 210 inside the camera module body 200 screws The lens barrel 210 is coupled by coupling.

At this time, the barrel mounting hole 142 is provided with a stopper 143 on the outer peripheral surface thereof when the barrel mounting hole 142 is rotated when the lower surface is in contact with the upper surface of the upper jig 110 as the lower entry is The stopper 143 prevents the barrel mounting opening 142 from proceeding further downward by the contact of the stopper 143.

Therefore, the lens barrel 210 is fixed at a constant height corresponding to the focal length determined when the camera module is designed, and adjusts the coupling height of the lens barrel 210 according to the focal length that is changed according to the type of the camera module. The stopper 143 coupled to the barrel mounting opening 142 is adjustablely mounted at any position.

Here, reference numeral S is a compression elastic spring.

Looking at the assembly process of the camera module using the assembly jig of the present invention made of such a technical configuration as follows.

First, the plate-shaped printed circuit board 130 is tightly fixed to the upper surface of the plate-shaped upper jig 110, and the plurality of camera module bodies 200 are mounted on the upper surface of the printed circuit board 130 at equal intervals. Let's do it.

Next, in the state in which the camera module main body 200 is seated on the printed circuit board 130, a plate-shaped upper jig 120 having a plurality of through-holes 121 formed thereon is covered, and the upper jig 120 The lens barrel 210 is coupled to the camera module main body 200 through each through hole 121.

Then, the lower end of the barrel mounting opening 142 extending through the through hole 121 to the lower end of the adjustment knob 140 is inserted, and the rotation of the rotary knob 141 provided on the upper end of the adjustment knob 140. The lens barrel 210 is fastened to the inside of the camera module body 200 by the.

Finally, the printed circuit board 130 is cut around the camera module main body 200 having an array of lenses arranged therein in an array on the printed circuit board 130. The assembly of the individual camera modules is completed.

Preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and various substitutions, modifications, and changes within the scope without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It will be possible, but such substitutions, changes and the like should be regarded as belonging to the following claims.

As described above, the camera module assembly jig of the present invention is such that the lens barrel is coupled through the adjustment knob while the camera module main body is interposed between the upper jig and the lower jig, thereby preventing foreign matter from entering into the camera module. In addition, there is an advantage that the lens barrel can be easily mounted.

In addition, the present invention is to make the coupling position adjustment by the stopper when the adjustment knob is rotated without a separate focusing process, the manufacturing process of the camera module package is shortened, the productivity is improved, the constant rotational force by using the adjustment knob VCA is transmitted When assembling the camera module of the type is expected to have an effect that can prevent the damage to the drive unit.

Claims (8)

A lower jig supported on the ground at a predetermined height and having a printed circuit board mounted thereon; A plurality of camera module bodies arranged in an array form at equal intervals on an upper surface of the printed circuit board mounted on the lower jig; A plate-shaped upper jig covered with an upper surface of the lower jig and having a plurality of through holes into which a lens barrel is inserted; And An adjustment knob through which a lower end is inserted through a through hole of the upper jig, and an upper portion of the lens barrel is coupled to transmit a rotational force; Camera module assembly jig including a. The method of claim 1, The lower jig, the camera module assembly jig, characterized in that the fixture is protruded in each corner portion of the upper surface and the inside. The method of claim 1, A plurality of through holes formed in the upper jig, the camera module assembly jig, characterized in that formed in a position corresponding to the camera module main body arranged on the lower jig. The method of claim 1, The upper jig, the camera module assembly jig, characterized in that the position is fixed by inserting the fasteners protruding in each corner of the lower jig through a hole provided in the corner. The method of claim 1, The adjustment knob is a camera module assembly jig, characterized in that consisting of a rotary knob, a barrel mounting port extending to the bottom and a stopper movably coupled to any position on the lens mounting. The method according to claim 1 or 5, The stopper is a camera module assembly jig characterized in that the lower surface is in contact with the upper surface of the upper jig to stop the lower progress of the lens barrel coupled to the camera module main body to have a certain focal length and the lens barrel can be mounted. . The method of claim 1, The camera module assembly jig to be mounted on the printed circuit board, the camera module body including the VCA type or COB type and COF type having an auto focus function is seated. A step in which the plate-shaped printed circuit board is closely attached to the upper jig of the plate; Mounting a plurality of camera module bodies on the upper surface of the printed circuit board so as to be arranged at equal intervals; A step in which a plate-shaped upper jig having a plurality of through-holes is covered in a state where the camera module main body is seated on the printed circuit board; Coupling a lens barrel to the camera module body through each through hole of the upper jig; The bottom of the barrel mounting opening extending through the through hole to the lower end of the adjustment is inserted into the lens barrel inside the camera module body by the rotation of the rotary knob provided on the upper end; And Cutting the printed circuit board around the camera module main body in which an lens barrel is coupled to the printed circuit board in an array form; Camera module assembly method comprising a.

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