TWI427899B - Apparatus for assembling voice coil motor - Google Patents

Description

Voice coil motor assembly fixture

The present invention relates to a voice coil motor assembly jig, and more particularly to a jig for assembling a magnetic component of a voice coil motor and a method of using the jig.

The voice coil motor is often used as a driving structure for the focus adjustment of the camera module, and mainly includes a voice coil motor frame, a magnet, a coil, and the like. Magnets are often attached to the four sides of the frame to provide a magnetic field that is outwardly directed from the center of the frame, which interacts with the electromagnetic field generated by the energized solenoid to drive the lens or barrel.

However, during the assembly of the magnetic component, the magnetic component is difficult to be mounted on the four sides of the frame of the voice coil motor due to excessive repulsive force between the magnetic components. If the magnetic component cannot be placed correctly, the subsequent dispensing process and assembly of other components are performed. It is also difficult to complete, thus affecting the output and quality of the voice coil motor.

In view of the above, it is necessary to provide an assembly jig capable of quickly and accurately mounting a magnetic component and a method of using the assembly jig.

A voice coil motor assembly jig for mounting a magnetic component to a voice coil motor, the voice coil motor to be assembled having a fixing frame defining a plurality of magnetic portions for accommodating the magnetic component, wherein The assembly jig includes: a carrying platform having a surface, the surface is provided with a plurality of positioning structures, the complex The number positioning structure is symmetrically distributed with respect to the center of the loading platform for fixing the fixing frame; a magnetic conductive member is located on the surface of the loading platform and located in a region defined by the plurality of positioning structures for assembling the magnetic component During the process, the repulsive force between the magnetic components is reduced.

A method for installing a magnetic component for a voice coil motor, comprising the steps of: providing a voice coil motor to be assembled, the voice coil motor to be assembled having a fixing frame defining a plurality of magnetic components for accommodating the magnetic component a magnetic portion; the plurality of positioning structures of the assembly fixture are used to fix the fixing frame, and a plane of each of the magnetic portions is perpendicular to the surface of the loading platform; and the magnetic conductive member is fixed in a region defined by the plurality of positioning structures; The plurality of magnetic components are respectively attached to the plurality of magnetic portions; the bonding surface of each of the magnetic components and the magnetic portion is dispensed; after the glue is cured, the magnetic components are assembled.

Compared with the prior art, the voice coil motor assembly fixture provided by the present invention is provided with a magnetic conductive member for reducing the repulsive force between the opposite or adjacent plurality of magnetic components, so that the magnetic body is attached to the four sides of the fixing frame. The assembly resistance received by the component is reduced, so that the magnetic component can be mounted quickly and accurately, and the assembly efficiency of the voice coil motor is improved.

10, 11, 30, 40, 50‧‧‧ Assembly fixtures

106‧‧‧Magnetic parts

104‧‧‧Loading station

1041‧‧‧mount surface

105‧‧‧ Positioning structure

20‧‧‧ fixed frame

201‧‧‧容容

202, 204, 206, 208‧‧‧ magnetic parts

21, 22‧‧‧ magnetic components

107‧‧‧Magnetic parts

102‧‧‧Base

1021‧‧‧ surface

301‧‧‧rails

31, 32, 33, 34, 41, 51‧‧‧ slides

302, 402‧‧‧ slide

303‧‧‧ thimble seat

3021‧‧‧Slide surface

304, 404, 406, 504, 505‧‧ ‧ thimbles

3041‧‧‧Spring device

61‧‧‧stop

611, 612‧‧‧ card slot

613‧‧‧stops

6131‧‧‧ first end

6132‧‧‧ second end

1 is a schematic view of a voice coil motor assembly jig provided by a first embodiment of the present invention.

2 is a schematic view of a magnetic conductive member provided by a second embodiment of the present invention.

3 is a schematic view of a voice coil motor assembly jig provided by a third embodiment of the present invention.

4 is a schematic view of a voice coil motor assembly jig provided by a fourth embodiment of the present invention.

FIG. 5 is a schematic diagram of a voice coil motor assembly jig provided by a fifth embodiment of the present invention.

The invention will now be described in further detail with reference to the accompanying drawings.

Referring to FIG. 1 , the assembly jig 10 provided by the first embodiment of the present invention includes a magnetic conductive member 106 and a carrying platform 104 carrying the magnetic conductive member 106 .

The carrier 104 has a surface 1041 on which four positioning structures 105 are provided. The positioning structure 105 is symmetrically distributed about the center of the carrier 104 for securing the voice coil motor to be assembled.

The positioning structure 105 is a boss higher than the surface 1041. The intersection of the two surfaces facing the center of the loading table 104 is provided with a right angle structure, which is matched with the four right angle vertices of the voice coil motor to be assembled. The voice coil motor is better secured to the carrier 104.

It can be understood that the positioning structure 105 can also be two. Preferably, the two positioning structures are symmetrically distributed with respect to the center of the loading platform 104. Although this structure only fixes two of the four right-angle vertices of the voice coil motor, it is only fixed. Firmly, it will not affect the assembly effect.

The voice coil motor to be assembled is now a fixing frame 20, and the fixing frame 20 is a frame body having a rectangular parallelepiped shape. The mounting frame 20 has four side walls that are perpendicular to the surface of the carrier table 1041. The four side walls define a receiving cavity 201. During the assembly process, the magnetic conductive member 106 is located in the receiving cavity 201. A magnetic portion is disposed on each side wall, so that there are four magnetic portions 202, 204, 206, 208, each of which is used for placing a magnetic component such as a magnet.

The magnetic conductive member 106 can be processed by a magnetic conductive stainless steel material and has a low magnetic resistance and a cylindrical shape. The function of the magnetic conductive member 106 is to offset the repulsive force between the magnetic components during the assembly process. It is located in the area limited by the four positioning structures 105, and can be fixed to the surface of the carrier table 1041 by welding, gluing or the like.

Preferably, a size can be set on the surface of the carrier table 1041 and the size of the magnetic conductive member 106 can be matched. A fixing portion, such as a groove or the like, is disposed in the fixing portion to facilitate replacement of the magnetic conductive member 106. Preferably, the fixing portion is located at the center of the area limited by the four positioning structures 105 to enable the magnetic conductive member 106 to be located at the center of the accommodating cavity 201.

If there is no magnetic conductive member 106, after the magnetic component is assembled, for example, after the magnetic component 21 is placed in the magnetic portion 202, the magnetic component 22 is attached to the magnetic portion 204 or the magnetic portion 206 or the magnetic portion 208. Due to the repulsive force between the magnetic element 21 and the magnetic element 22, it is difficult to assemble the magnetic element 22 to the correct position, which in turn causes difficulty in assembling the third magnetic element and the fourth magnetic element. The magnetically permeable member 106 can reduce the repulsive force between the opposing or adjacent magnetic members, making the magnetic components easy to assemble.

During assembly, the magnetic conductive member 106 can be fixed to the loading platform 104, and then the fixing frame 20 is placed by the positioning structure 105 around the magnetic conductive member 106, and then the magnetic component 21 is attached to the magnetic portion 202 of the fixing frame 20. Then, the remaining magnetic components are placed in the magnetic portions 204, 206, 208; or, the fixing frame 20 may be first placed on the carrying platform 104, and then the magnetic conductive member 106 is placed at the center of the accommodating cavity 201, and then the magnetic device is mounted. element.

Referring to FIG. 2, the assembly jig 11 provided by the second embodiment of the present invention is substantially the same as the assembly jig 10 provided by the first embodiment, except that the magnetic conductive member 107 is a rectangular parallelepiped or a square. It is preferably sized to be placed in the area defined by the four positioning structures 105.

Referring to FIG. 3, the assembly jig 30 provided by the third embodiment of the present invention is substantially the same as the assembly jig 10 provided by the first embodiment, except that the assembly jig 30 has a base 102 having a base 102. A surface 1021. The carrier 104 is located on the base surface 1021.

The surface 1021 of the base 102 is further provided with four identical slide rails 301 and movable along the slide rails The four sliding members 31, 32, 33, 34, wherein the four-section sliding rails 301 are all directed to the carrying platform 104.

Since the four sliders are substantially the same, the slider 31 will be described as an example.

The sliding member 31 includes a sliding table 302 and a thimble base 303. The sliding table 302 is slidable along the sliding rail 301. The sliding table 302 has a surface 3021, and the ejector pin 303 is disposed on the sliding table surface 3021.

The ejector pin 304 is disposed through the ejector pin 303. The ejector pin 304 is parallel to the base surface 1021 and points to the magnetic portion 202 of one of the rectangular parallelepiped accommodation spaces.

The slide table 302 is moved closer to or away from the holder 20 along the slide rails 301. The ejector pin 303 is fixed to the slide surface 3021 and will move simultaneously with the slide table 302.

During assembly, the magnetic component 21 is first placed in the magnetic portion 202, and the slide 302 is moved along the slide rail 301 toward the magnetic portion 202 until the top end of the thimble 304 just abuts against the magnetic member 21. At this time, the slide 302 does not move. .

Then, the bonding surface of the magnetic member 21 and the magnetic portion 202 is dispensed, for example, using an ultraviolet glue. After the glue is cured, the slide table 302 is removed.

The magnetic components in the four directions can be assembled one by one or assembled at the same time.

Preferably, the engaging portion of the thimble 304 and the thimble base 303 is provided with a spring device 3041. The spring device 3041 is tubular, sleeved on the outer side of the partial thimble, and connected to the thimble seat 303.

The spring device 3041 can buffer the pressure when the thimble 304 and the magnetic member 21 are in contact, so that the thimble 304 can be contracted along its axial direction to slow down the pressure of the collision, so as not to cause damage to the fixing frame 20. Of course, this degree of contraction does not cause the thimble 304 to separate from the magnetic element it is to resist.

Referring to FIG. 4, the assembly jig 40 provided by the fourth embodiment of the present invention is substantially the same as the assembly jig 30 provided by the third embodiment, except that the sliding member 41 of the assembly jig 40 further includes a first ejector pin. The second ejector pin 406 is disposed in parallel with the 404. The two ejector pins are disposed on the sliding table 402, and all of the ejector pins 404 and 406 are not provided with spring means.

The other three sliders and the slider 41 have the same structure.

Referring to FIG. 5, the assembly jig 50 provided by the fifth embodiment of the present invention is substantially the same as the assembly jig 30 provided by the third embodiment, except that each sliding member 51 of the assembly jig 50 has parallel to each other. The first ejector pin 504 and the second ejector pin 505; further comprising four identically configured stops 61, and one stop 61 corresponding to a slider 51.

The stopper portion 61 includes a pair of card slots 611, 612 and a stopper 613.

The card slot 611 and the card slot 612 are respectively disposed on two sides of the slide rail 301. The stopper member 613 has a rod-like structure and has a first end 6131 and a second end 6132.

The first end 6131 is rotatably fixed to the card slot 611, and the second end 6132 is a free end and can be placed in the card slot 612.

When assembling, after the first ejector pin 504 and the second ejector pin 505 are pressed against the magnetic element 21, the second end 6132 of the stopper 613 is placed in the card slot 612 to prevent the slide table 302 from moving away from the magnetic pole portion. mobile.

When the dispensing is completed, it is determined that the magnetic member 21 has been fixed to the magnetic portion, and the free end 6132 is lifted to move the slider 51 away from the carrier along the slide rail 301.

The magnetic components in the four directions can be assembled one by one or assembled at the same time.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧Assembled fixtures

106‧‧‧Magnetic parts

104‧‧‧Loading station

1041‧‧‧mount surface

105‧‧‧ Positioning structure

20‧‧‧ fixed frame

201‧‧‧容容

202, 204, 206, 208‧‧‧ magnetic parts

21, 22‧‧‧ magnetic components

Claims (10)

A voice coil motor assembly jig for mounting a magnetic component for a voice coil motor, the voice coil motor to be assembled having a fixing frame defining a plurality of magnetic portions for accommodating the magnetic component, the improvement being The assembly jig includes: a carrying platform having a surface, the surface is provided with a plurality of positioning structures, the plurality of positioning structures are symmetrically distributed with respect to a center of the loading platform, and are used for fixing the fixing frame; It is located on the surface of the carrier and located in the area defined by the plurality of positioning structures for reducing the repulsive force between the magnetic elements during assembly of the magnetic component. The assembly jig of claim 1, wherein: the center of the region defined by the plurality of positioning structures is provided with a fixing portion that fixes the magnetic conductive member. The voice coil motor assembly jig according to claim 1, wherein the magnetic conductive member has a cylindrical structure. The voice coil motor assembly jig according to claim 1, wherein the magnetic conductive member has a rectangular parallelepiped structure. The voice coil motor assembly jig according to claim 1, wherein the assembly jig further comprises: a base having a surface, the carrier is fixed to the surface of the base; The sliding rail is disposed on the surface of the base; the sliding member is located away from or close to the magnetic portion along the sliding rail; the ejector pin is disposed on the sliding member, and the thimble is directed to the magnetic portion of the fixing frame. The voice coil motor assembly jig according to claim 5, wherein: the sliding member comprises a sliding table and a thimble seat, the sliding table is slidable along the sliding rail, the sliding table has a surface, and the thimble is provided The ejector pin is disposed on the pedestal seat on the surface of the slide table. The voice coil motor assembly jig of claim 5, wherein the assembly jig further comprises a spring device that allows the ejector pin to expand and contract along its axial direction. The voice coil motor assembly jig according to claim 5, wherein the voice coil motor assembly jig further comprises a plurality of stopping portions, and a stopping portion is correspondingly provided with a sliding mechanism, and each of the stopping portions is used for each of the stopping portions Blocking the corresponding sliding member to slide, each of the stopping portions includes a pair of card slots and a stopping member, the pair of card slots are disposed on two sides of the sliding rail, the stopping member has a first end and a first end The two ends are rotatably fixed to one of the card slots, and the second end is a free end and can be placed in the other card slot. A method of installing a magnetic component for a voice coil motor using the assembly jig according to claim 1 of the patent application, comprising the steps of: providing a voice coil motor to be assembled, the voice coil motor to be assembled having a fixing frame The fixing frame defines a plurality of magnetic portions for accommodating the magnetic components; the plurality of positioning structures of the assembly fixture are used to fix the fixing frame, and each of the magnetic portions is perpendicular to the surface of the carrier; The magnetic conductive member is fixed in a region defined by the plurality of positioning structures; the plurality of magnetic components are respectively attached to the plurality of magnetic portions; and the bonding surface of each of the magnetic components and the magnetic portion is dispensed; The magnetic components are assembled. The method of installing a magnetic component according to claim 9, wherein: the center of the region defined by the plurality of positioning structures is provided with a fixing portion, and the fixing portion fixes the magnetic conductive member.