CN103296853A

CN103296853A - Voice coil motor

Info

Publication number: CN103296853A
Application number: CN2012100430458A
Authority: CN
Inventors: 周代栩
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2012-02-24
Filing date: 2012-02-24
Publication date: 2013-09-11

Abstract

The invention discloses a voice coil motor which is used for driving a lens module to move. The lens module is provided with an optical axis. The voice coil motor comprises a fixed unit, a movable unit, an upper elastic sheet, and a conductive post. The fixed unit comprises a fixed frame and magnets, wherein the fixed frame is approximately of a cube structure and provided with containing space, and the magnets are fixed on the side wall of the fixed frame. The movable unit is movably contained in the containing space and comprises a movable frame and a coil, wherein the movable frame is used for containing the lens module, the coil is wound outside the movable frame, the magnets and the coil drive the movable frame to move in the direction parallel to the optical axis in a matched mode, a containing hole is formed in one end of the movable frame, the coil is provided with a terminal, the terminal is provided with a bended portion, and the bended portion surrounds the containing hole. The upper elastic sheet is fixed at one end of the fixed frame and one end of the movable frame. The conductive post is fixed in the containing hole so as to enable the bended portion to be pressed on the upper elastic sheet, and therefore the upper elastic sheet is connected with the coil.

Description

Voice coil motor

Technical field

The present invention relates to a kind of voice coil motor.

Background technology

Voice coil motor generally comprises active unit, fixed cell and shell fragment, and active unit is suspended in the fixed cell by shell fragment, and active unit has coil, and fixed cell has magnet, the coil of energising can be subjected to magnet magnetic field effect and move.

Since shell fragment need with the coil conducting, existing way is to make the two conducting by manual welding, this way often causes voice coil motor bad order or pollution owing to need mat to live scaling powder, in addition, operator's gimmick instability also regular meeting causes bad.

Summary of the invention

In view of this, be necessary to provide a kind of voice coil motor of lifting yield.

A kind of voice coil motor, be used for driving the camera lens module motion, described camera lens module has optical axis, described voice coil motor comprises: fixed cell, comprise fixed mount and magnet, described fixed mount is roughly cube structure and geometric center has spatial accommodation, and described magnet is fixed on the sidewall of described fixed mount; Active unit, be contained in versatilely in the spatial accommodation of described fixed mount, described active unit comprises adjustable shelf and coil, described adjustable shelf has to accommodate the spatial accommodation of described camera lens module, the corresponding described magnet of described coil is wrapped in the described adjustable shelf outside, described magnet drives described adjustable shelf for matching with described coil and moves along the direction of parallel optical axis, one end of described adjustable shelf has accommodation hole, described coil has terminals, described terminals have kink, and described kink is around described accommodation hole; Last shell fragment is fixed on described adjustable shelf and fixed mount one end; And conductive pole, be fixed in the described accommodation hole described kink is pressed together on described going up on the shell fragment so that described upward shell fragment and coil are communicated with.

Compared to prior art, the voice coil motor mat of the embodiment of the invention is lived conductive pole and is communicated with coil and shell fragment, does not need welding job, thereby promotes the yield of voice coil motor.

Description of drawings

Fig. 1 is the schematic diagram of embodiment of the invention voice coil motor.

Fig. 2 is the decomposing schematic representation of Fig. 1.

Fig. 3 is the schematic diagram of active unit and shell fragment in the embodiment of the invention voice coil motor.

Fig. 4 is the decomposing schematic representation of Fig. 3.

The main element symbol description

Voice coil motor	10
		Housing	11
Central through hole	110
		Loam cake	12
Last location hole	121
		Last shell fragment	13a
Following shell fragment	13b
		Light hole
	130
		First location hole	131
Second location hole	132
		Elastic part	133
Active unit	14
		Adjustable shelf	141
First spatial accommodation	1410
		Projection	1411
Accommodation hole	1412
		Coil	142
Terminals	1420
		The vertical portion	1421
Kink	1422
		Fixed cell	15
Fixed mount	151
		Second spatial accommodation	1510
Reference column	1511
		Following location hole	1512
Opening	1513
		Magnet	152
Supporting body	16
		Following reference column	161
Conductive pole	17
		First cylinder	171
Second cylinder	172

Following embodiment will further specify the present invention in conjunction with above-mentioned accompanying drawing.

Embodiment

See also Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the voice coil motor 10 that the embodiment of the invention provides is used for driving the camera lens module (not shown) and moves to realize focusing or zoom function along the optical axis direction of paralleloscope head module.

Voice coil motor 10 comprises housing 11, loam cake 12, last shell fragment 13a, following shell fragment 13b, active unit 14, fixed cell 15, supporting body 16 and conductive pole 17.

Housing 11 has a central through hole 110 and is used for making light to enter, and housing 11 is used for holding loam cake 12, upward shell fragment 13a, following shell fragment 13b, active unit 14 and fixed cell 15 also can have the function of anti-electromagnetic interference to prevent the external world to the interference of said modules.

Loam cake 12 is roughly square structure, and four jiaos respectively arrange one and go up location hole 121.

Last shell fragment 13a is square structure, and the center has a light hole 130.Have four first location holes 131 and four second location holes 132 around light hole 130, four first location holes 131 be positioned at shell fragment 13a four corners and away from 130, four second location holes 132 of light hole near light holes 130 and two second location holes 132 between two online first location holes 131 of diagonal angle.

The structure of following shell fragment 13b is identical with the structure of last shell fragment 13a: have 130 4 first location holes 131 of light hole and four second location holes 132.

Part between first location hole 131 and second location hole 132 is elastic part 133, and after the elastic part 133 feasible external force that are applied on shell fragment 13a and the following shell fragment 13b disappeared, last shell fragment 13a and following shell fragment 13b can recover original shape.

Active unit 14 comprises adjustable shelf 141 and coil 142.Adjustable shelf 141 is the square shape of first spatial accommodation 1410 that has to accommodate camera lens module.Coil 142 is wrapped in the periphery of adjustable shelf 141.

Adjustable shelf 141 has projection 1411 and accommodation hole 1412 of three correspondence second location holes 132 near the end of last shell fragment 13a, the close end of shell fragment 13b down has four projections 1411 of corresponding second location hole 132, last shell fragment 13a is fixed on an end of adjustable shelf 141 by projection 1411 and second location hole 132 and binding site adhesive process, and following shell fragment 13b is fixed on the other end of adjustable shelf 141 equally by projection 1411 and second location hole 132 and binding site adhesive process.

Coil 142 stretches out terminals 1420 near last shell fragment 13a, and terminals 1420 comprise vertical portion 1421 and kink 1422, and the optical axis of vertical portion 1421 substantially parallel camera lens modules, kink 1422 are positioned at the terminal of vertical portion 1421 and present annular substantially.Terminals 1420 stretch out from adjustable shelf 141, and kink 1422 is around accommodation hole 1412.

Conductive pole 17 passes second location hole 132 and stretches in the accommodation hole 1412, and compresses the kink 1422 of terminals 1420, and kink 1422 skins do not have insulating barrier.

Conductive pole 17 comprises that the diameter of first cylinder 171 and second cylinder, 172, the first cylinders 171 is less than the diameter of second cylinder 172.First cylinder 171 stretches in the accommodation hole 1412, last shell fragment 13a is between adjustable shelf 141 and kink 1422, has a determining deviation between second cylinder 172 and the last shell fragment 13a, the size of this spacing approximates the diameter of the lead of coil 142 greatly, thereby second cylinder 172 tightly is pressed together on kink 1422 on the shell fragment 13a.

For conductive pole 17 is securely fixed on the adjustable shelf 141, can in accommodation hole 1412, inject hot-setting adhesive, treat that conductive pole 17 inserts after, baking is fixing.

Fixed cell 15 comprises fixed mount 151 and magnet 152.The shape of the shape of fixed mount 151 and adjustable shelf 141 is roughly the same, and the geometric center of fixed mount 151 has second spatial accommodation 1510 that holds active unit 14.

Fixed mount 151 has second reference column 1511 near the end of last shell fragment 13a, and the close end of shell fragment 13b down has following location hole 1512.Second reference column 1511 passes first location hole 131 of shell fragment 13a and stretches into the last location hole 121 of loam cake 12, by gluing process shell fragment 13a is fixed between fixed mount 151 and the loam cake 12 again.

In addition, have opening 1513 on the sidewall of fixed mount 151, magnet 152 is arranged in the opening 1513 and the coil 142 of corresponding active unit 14.

Produce magnetic field force between the coil 142 of magnet 152 and energising, magnetic field force drives adjustable shelf 141 motions, and the adjustable shelf 141 of motion drives camera lens module motion in second spatial accommodation 1510 together.

Supporting body 16 is square structure, four jiaos respectively have a following reference column 161, and following reference column 161 stretches into down in the following location hole 1512 of first location hole 131 of shell fragment 13b and fixed mount 151 and by gluing process and will descend shell fragment 13b to be fixed between fixed mount 151 and the supporting body 16.

Voice coil motor 10 with coil 142 and last shell fragment 13a conducting, does not need welding job by conductive pole 17, promotes the yield of voice coil motor 10.

Be understandable that those skilled in the art also can do other variation etc. and be used in design of the present invention in spirit of the present invention, as long as it does not depart from technique effect of the present invention and all can.The variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.

Claims

1. a voice coil motor is used for driving the camera lens module motion, and described camera lens module has optical axis, and described voice coil motor comprises:

Fixed cell comprises fixed mount and magnet, and described fixed mount is roughly cube structure and geometric center has spatial accommodation, and described magnet is fixed on the sidewall of described fixed mount;

Active unit, be contained in versatilely in the spatial accommodation of described fixed mount, described active unit comprises adjustable shelf and coil, described adjustable shelf has to accommodate the spatial accommodation of described camera lens module, the corresponding described magnet of described coil is wrapped in the described adjustable shelf outside, described magnet drives described adjustable shelf for matching with described coil and moves along the direction of parallel optical axis, one end of described adjustable shelf has accommodation hole, described coil has terminals, described terminals have kink, and described kink is around described accommodation hole;

Last shell fragment is fixed on described adjustable shelf and fixed mount one end; And

Conductive pole is fixed in the described accommodation hole described kink is pressed together on described going up on the shell fragment so that described upward shell fragment and coil are communicated with.

2. voice coil motor as claimed in claim 1 is characterized in that, described conductive pole comprises first cylinder and second cylinder that diameter is different.

3. voice coil motor as claimed in claim 1 is characterized in that, has opening on the sidewall of described fixed mount, and described magnet is fixed in the described opening.

4. voice coil motor as claimed in claim 1 is characterized in that, described voice coil motor further comprises shell fragment down, and described shell fragment down is fixed on the other end of described fixed mount and adjustable shelf, so that described adjustable shelf is suspended in the described fixed mount.

5. voice coil motor as claimed in claim 4, it is characterized in that, the described shell fragment of going up has first location hole and second location hole, corresponding described first location hole of described fixed mount and adjustable shelf and second location hole have reference column and projection respectively, described first location hole and reference column match the described shell fragment of going up are fixed on the described fixed mount, and described second location hole and projection match the described shell fragment of going up is fixed on the described adjustable shelf.

6. voice coil motor as claimed in claim 5, it is characterized in that, described voice coil motor further comprises a supporting body, described supporting body has following reference column, described fixed mount has following location hole, described down shell fragment has the corresponding described location hole of reference column down, and described reference column down stretches in the location hole of described location hole down and described shell fragment down so that described shell fragment down is fixed between described fixed mount and the supporting body.

7. voice coil motor as claimed in claim 6 is characterized in that, described voice coil motor further comprises a loam cake, and described loam cake has last location hole, and described reference column stretches into described going up in the location hole so that described loam cake is fixed on the described fixed mount.