CN103312109A

CN103312109A - Voice coil motor

Info

Publication number: CN103312109A
Application number: CN2012100661556A
Authority: CN
Inventors: 柯朝元
Original assignee: SANYINGCHAO PRECISION PHOTOELECTRIC (JINCHENG) Co Ltd
Current assignee: SANYINGCHAO PRECISION PHOTOELECTRIC (JINCHENG) Co Ltd
Priority date: 2012-03-14
Filing date: 2012-03-14
Publication date: 2013-09-18

Abstract

The invention relates to a voice coil motor, which comprises a shell, a bearing plate, an upper elastic sheet, a lower elastic sheet, a movable assembly and a fixed assembly, wherein an accommodating space is enclosed by the shell and the bearing plate together; the upper elastic sheet, the lower elastic sheet, the movable assembly and the fixed assembly are accommodated in the accommodating space; the movable assembly comprises a movable frame and a coil which is sleeved on the movable frame; the two opposite ends of the movable frame are fixed to the upper elastic sheet and the lower elastic sheet respectively; the fixed assembly comprises a fixed frame and a magnetic component; the movable assembly is accommodated in the fixed frame; the fixed frame comprises two oppositely arranged first side walls and two oppositely arranged second side walls; the two second side walls are provided with accommodating grooves which penetrate through the second side walls; the magnetic component only comprises a first magnet and a second magnet; the first magnet and the second magnet are fixedly arranged in the two accommodating grooves respectively and are both arranged opposite to the coil. The voice coil motor has the advantages of low cost, light weight and high assembly efficiency.

Description

Voice coil motor

Technical field

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

Background technology

All need to arrange four magnet in traditional voice coil motor, these four magnet adsorptions in the shell of voice coil motor and around the coil setting, the coil of energising can be subject to these four magnet magnetic field effect and move.And the magnet cost accounts for sizable part of the total cost of voice coil motor in the voice coil motor.And how the quantity of magnet still increases the weight of voice coil motor, the packaging efficiency of voice coil motor is descended, therefore how to reduce magnet and the use amount of coil in voice coil motor, but can guarantee the voice coil motor normal operation, be the improvement direction of voice coil motor always.

Summary of the invention

In view of this, be necessary to provide the voice coil motor that a kind of cost is low, lightweight and packaging efficiency is high.

A kind of voice coil motor, it comprises that a housing, a loading plate, upper shell fragment, lower shell fragment, movable dress group reach fixedly dress group.This shell and this loading plate surround a receiving space jointly.This upper shell fragment, this time shell fragment, this activity dress group reach fixedly, and the dress group is contained in this receiving space.This activity dress group comprises an adjustable shelf and is set in coil on this adjustable shelf.The opposite end of this adjustable shelf respectively with this on shell fragment and this time shell fragment fix.Fixedly the dress group comprises a fixed mount and a magnet assembly.This activity dress group is contained in this fixed mount.This fixed mount comprises two the first side walls that are oppositely arranged and two the second sidewalls that are oppositely arranged.These two second sidewalls are all offered the accepting groove that runs through himself.This magnet assembly only comprises first magnet and second magnet.This first magnet and this second magnet are separately fixed in these two accepting grooves, and all are oppositely arranged with this coil.

Compared with prior art, magnet assembly in the voice coil motor of the present invention only comprises the first magnet and the second magnet that is oppositely arranged, therefore other two magnet have been saved, so that cost is effectively reduced, and weight is effectively alleviated, also saved simultaneously the time that will assemble two other magnet, so that packaging efficiency is by Effective Raise.

Description of drawings

Fig. 1 is the decomposing schematic representation of the voice coil motor of better embodiment of the present invention.

Fig. 2 is the structural representation of upper shell fragment of the voice coil motor of Fig. 1.

Fig. 3 is the vertical view of upper shell fragment of the voice coil motor of Fig. 1.

Fig. 4 is the structural representation of lower shell fragment of the voice coil motor of Fig. 1.

Fig. 5 is the vertical view of lower shell fragment of the voice coil motor of Fig. 1.

Fig. 6 is the decomposing schematic representation of another angle of the voice coil motor of Fig. 1.

Fig. 7 is the assembly drawing of the voice coil motor of Fig. 1.

Fig. 8 is that the voice coil motor of Fig. 7 is along the cutaway view of VIII-VIII direction.

Fig. 9 is that the voice coil motor of Fig. 7 is along the cutaway view of IX-IX direction.

The main element symbol description

Voice coil motor	100
		Housing	10
Top board	11
		Side plate	12
The first central through hole	111
		The first recess	112
Loading plate	20
		Loading end	21
Fixed leg	211
		The second central through hole	22
Receiving space	201
		The first perforation	261
The second perforation	262
		Spacer ring	30
The 3rd central through hole	31
		Upper location hole	32
Upper shell fragment	40
		The first light hole	401
The first housing	402
		The first inside casing	403
The first elastic part	41
		The second elastic part	42
The 3rd elastic part	43
		The 4th elastic part	44
The first location hole	404
		The second recess	405
The first side	402a
		The second side	402b
The 3rd side	402c
		Four side	402d
The first groove	46
		The second groove	47
The 3rd groove	48
		The 4th groove	49
The first the initial segment	46a
		The first linkage section	46b
The first ending segment	46c
		The second the initial segment	47a
The second linkage section	47b
		The second ending segment	47c
The 3rd the initial segment	48a
		The 3rd linkage section	48b
The 3rd ending segment	48c
		Fourth section that begins	49a
The 4th linkage section	49b
		The 4th ending segment	49c
First paragraph	411
		Second segment	412
The 3rd section	421
		The 4th section	422
The 5th section	431
		The 6th section	432
The 7th section	441
		The 8th section	442
Lower shell fragment	50
		The 5th groove	501
The 6th groove	502
		The second light hole	503
First	51
		The second housing	510
The first fixed arm	511
		The second fixed arm	512
The 3rd fixed arm	513
		The second inside casing	520
The 3rd joint	521
		The 4th joint	522
The 5th joint	523
		The first elasticity arm	530
First segment	530a
		Second section	530b
Second portion	56
		The 3rd housing	560
The 3rd inside casing	570
		The second elasticity arm	580
The 4th fixed arm	561
		The 5th fixed arm	562
The 6th fixed arm	563
		Tabs	525
The second location hole	526
		The 3rd location hole	527
The 3rd recess	529
		Lower location hole	581
The first conducting terminal	58
		The second conducting terminal	59
Movable dress group	60
		Adjustable shelf	61
The first spatial accommodation	610
		The upper surface	611
The lower surface	612
		Coil	62
Upper protruding block	613
		Lower protruding block	614
The first reference column	615
		Fixing dress group	70
Fixed mount	701
		Magnet assembly	702
The first magnet	71
		The second magnet	72
The second reference column	703
		Blind hole	704
The first side wall	701a
		The second sidewall	701b
Accepting groove	701c
		The second spatial accommodation	706

Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.

Embodiment

See also Fig. 1, be a kind of voice coil motor 100 that embodiment of the present invention provides, be used for driving camera lens module (not shown) and move to realize focusing or zoom function along the optical axis direction of paralleloscope head mould group.

This voice coil motor 100 comprises that housing 10, loading plate 20, spacer ring 30, upper shell fragment 40, lower shell fragment 50, movable dress group 60 reach fixedly dress group 70.

This housing 10 is made by magnetic shielding materials such as dilval, conductive plastics, surface conductance material, electro-conductive glass, and comprises a top board 11 and four side plates 12 that vertically are installed in these top board 11 edges.These four side plates 12 are end to end.This top board 11 is rectangular-shaped, offers the first central through hole 111 and a plurality of the first recess 112 that is connected with this first central through hole 111 at it near center position.Be appreciated that the Main Function of offering this first recess 112 is for convenient the camera lens module to be installed in this voice coil motor 100.

This loading plate 20 is rectangular-shaped, and it comprises a loading end 21 towards this housing 10.Four corners of this loading end 21 vertically extend a plurality of fixed legs 211.This loading plate 20 offers one second central through hole 22 near center position.This second central through hole 22 and these the first central through hole 111 coaxial settings are so that light can pass this loading plate 20.This housing 10 be located on this loading plate 20, to form a receiving space 201.This loading plate 20, this spacer ring 30, shell fragment 40 on this, this time shell fragment 50, this activity dress group 60 and fixedly dress group 70 all be housed in this receiving space 201, disturb the normal operation of this voice coil motor 100 with the electromagnetic signal that prevents the external world.

This spacer ring 30 is roughly the square frame shape, and the center of this spacer ring 30 has the 3rd central through hole 31, and four corners of this spacer ring 30 respectively arrange a upper location hole 32 that runs through himself.

Shown in Fig. 2-3, shell fragment 40 is the square plate shape on this, adopts sheet metal to be stamped to form.Upward first light hole 401 is offered at the center of shell fragment 40.This first light hole 401 and these the first central through hole 111 coaxial settings.Should comprise one around this first light hole 401 and away from the first housing 402 of this first light hole 401, the first inside casing 403 and a plurality of the first elastic part 41, the second elastic part 42, the 3rd elastic part 43 and the 4th elastic part 44 that is connected between this first housing 402 and this first inside casing 403 around this first light hole 401 and close this first light hole 401 by upper shell fragment 40.Four jiaos of this first housing 402 respectively arrange first location hole 404.Offer four the second recesses 405 that are connected with this first light hole 401 on this first inside casing 403.

This first housing 402 comprises first side 402a, second side 402b, the 3rd side 402c and four side 402d.This first side 402a is parallel with the 3rd side 402c, and this second side 402b is parallel with this four side 402d.Also offer the first groove 46, the second groove 47, the 3rd groove 48 and the 4th groove 49 around this first light hole 401.

This first groove 46 has rectilinear first a initial segment 46a parallel with this four side 402d, rectilinear first a linkage section 46b parallel with this first side 402a and rectilinear first an ending segment 46c parallel with this second side 402b.This second groove 47 has rectilinear second a initial segment 47a parallel with this first side 402a, rectilinear second a linkage section 47b parallel with this second side 402b and rectilinear second an ending segment 47c parallel with the 3rd side 402c.The 3rd groove 48 has rectilinear three a initial segment 48a parallel with this second side 402b, rectilinear three a linkage section 48b parallel with the 3rd side 402c, rectilinear three an ending segment 48c parallel with this four side 402d.The 4th groove 49 has rectilinear fourth beginning section 49a, with this four side 402d parallel rectilinear four a linkage section 49b and with this first side 402a parallel rectilinear four an ending segment 49c parallel with the 3rd side 402c.

This first groove 46, this second groove 47, the 3rd groove 48 and the 4th groove 49 are crisscross arranged in twos.This first linkage section 46b is between this second the initial segment 47a and the 4th ending segment 49c, this second linkage section 47b is between the 3rd the initial segment 48a and this first ending segment 46c, the 3rd linkage section 48b begins between section 49a and this second ending segment 47c this fourth, and the 4th linkage section 49b is between this first the initial segment 46a and the 3rd ending segment 48c.

The length of this first the initial segment 46a is 3 times of length of this first ending segment 46c, the length of this second the initial segment 47a is 3 times of length of this second ending segment 47c, the length of the 3rd the initial segment 48a is 3 times of length of the 3rd ending segment 48c, and this fourth the begin length of section 49a is 3 times of length of the 4th ending segment 49c.

This first elastic part 41 is roughly L-shaped, and comprises the first paragraph 411 and second segment 412 of approximate vertical, and this first paragraph 411 is arc with the coupling part of this second segment 412.This first paragraph 411 is between this first linkage section 46b and the 4th ending segment 49c, and this second segment 412 is between this first the initial segment 46a and the 4th linkage section 49b.

This second elastic part 42 is roughly L-shaped, and comprises that the 3rd section 421 and the 4th sections 422, the three sections 421 coupling parts with the 4th section 422 of approximate vertical are arc.The 3rd section 421 between this second linkage section 47b and this first ending segment 46c, the 4th section 422 between this second the initial segment 47a and this first linkage section 46b.

The 3rd elastic part 43 is roughly L-shaped, and comprises that the 5th section 431 and the 6th sections 432, the five sections 431 coupling parts with the 6th section 432 of approximate vertical are arc.The 5th section 431 between the 3rd linkage section 48b and this second ending segment 47c, the 6th section 432 between this second the initial segment 47a and the 3rd linkage section 48b.

The 4th elastic part 44 is roughly L-shaped, and comprises that the 7th section 441 and the 8th sections 442, the seven sections 441 coupling parts with the 8th section 442 of approximate vertical are arc.The 7th section 441 between the 4th linkage section 49b and the 3rd ending segment 48c, the 8th section 442 between the 3rd the initial segment 48a and the 4th linkage section 49b.

The first paragraph 411 of this first elastic part 41 overlaps with the 4th section 422 projection section on the 402a of this first side of this second elastic part 42, the 3rd section 421 of this second elastic part 42 overlaps with the 6th section 432 projection section on the 402b of this second side of the 3rd elastic part 43, the 5th section 431 of the 3rd elastic part 43 overlaps with the 8th section 442 projection section on the 3rd side 402c of the 4th elastic part 44, and the 7th section 441 of the 4th elastic part 44 overlaps with the projection section of second segment 412 on this four side 402d of this first elastic part 41.

Because the shape of this first elastic part 41, this second elastic part 42, the 3rd elastic part 43 and the 4th elastic part 44 is roughly L-shaped, it is not single movable section, and the turning of this first elastic part 41, this second elastic part 42, the 3rd elastic part 43 and the 4th elastic part 44 is curved, reduced the degree that stress is concentrated, so that upward the toughness of shell fragment 40 is better.

Shown in Fig. 4-5, this time shell fragment 50 adopts sheet metal to be stamped to form, and comprises first 51 and the second portion 56 of mutual disconnection.This first 51 comprises the second housing 510 of a U-shaped, the second inside casing 520 of U-shaped and the first L shaped elasticity arm 530.This first elasticity arm 530 is connected between this second housing 510 and this second inside casing 520.Separate by the 5th groove 501 between this first elasticity arm 530 and this second housing 510, separate by the 6th groove 502 between this first elasticity arm 530 and this second inside casing 520.This second portion 56 comprises the 3rd housing 560 of a U-shaped, the 3rd inside casing 570 of U-shaped and the second L shaped elasticity arm 580.This second elasticity arm 580 is connected between the 3rd housing 560 and the 3rd inside casing 570.This second housing 510 and the 3rd housing 560 disconnect mutually, and jointly surround a square frame 590 with second light hole 503.The shape of the shape of this second portion 56 and this first 51 is about the central point Central Symmetry of this square frame 590.

This second housing 510 comprises the first fixed arm 511, the second fixed arm 512 and the 3rd fixed arm 513.The 3rd fixed arm 513 connects this first fixed arm 511 and this second fixed arm 512.The 3rd housing 560 comprises the 4th fixed arm 561, the 5th fixed arm 562 and the 6th fixed arm 563.The 4th fixed arm 561 is located along the same line with this first fixed arm 511, and the 5th fixed arm 562 is located along the same line with this second fixed arm 512.The 3rd fixed arm 513 is oppositely arranged with the 6th fixed arm 563, and is parallel to each other.

This first elasticity arm 530 comprises orthogonal first segment 530a and second section 530b.This first segment 530a is connected to the inboard of this first fixed arm 511, and along the direction that is parallel to this first fixed arm 511 towards 563 extensions of the 6th fixed arm, until arrive the 4th fixed arm 561 and the 6th fixed arm 563 intersections, then be connected with this second section 530b, this second section 530b is parallel to the 6th fixed arm 563.The coupling part of this first segment 530a and this second section 530b is arc.The length of this first segment 530a is greater than the length of this second section 530b.In the present embodiment, the length of this first segment 530a is three times of length of this second section 530b.

This second inside casing 520 comprise 522 and one at the 4th parallel joint of 521, one at the 3rd joint parallel with the 3rd fixed arm 513 and this first fixed arm 511 parallel with the 6th fixed arm 563 the 5th save 523.One end of the 3rd joint 521 is connected to the inboard of the 3rd fixed arm 513, and the other end is connected with the 4th joint 522.The 4th joint 522 is connected between the 3rd joint the 521 and the 5th joint 523.The 5th joint 523 is connected with the end of this second section 530b near the end of the 6th fixed arm 563, the inboard of the 4th joint 522 arranges a petal-like tabs 525 near the part of the 3rd joint 521, this tabs 525 is extended towards the direction of the 3rd joint 521, and offers second location hole 526.The 3rd joint 521 is arc with the coupling part of the 4th joint 522.The 4th joint 522 is fan-shaped with the coupling part of the 5th joint 523, and offers the 3rd location hole 527.Two the 3rd recesses 529 are offered in the inboard of this second inside casing 520.In the present embodiment, one of them the 3rd recess 529 is opened in the 4th joint 522 and saves 523 coupling part with the 5th, and is connected with this second light hole 503; Another the 3rd recess 529 is opened on this tabs 525, and is connected with this second light hole 503.

The 3rd inside casing 570 is similar with the structure of this second inside casing 520, namely also offer second location hole 526, the 3rd location hole 527 and two the 3rd recesses 529 on the 3rd inside casing 570, and the second location hole 526 on the 3rd inside casing 570, the 3rd location hole 527 and two the 3rd recesses 529 respectively with the second inside casing 520 on the second location hole 526, the 3rd location hole 527 and two the 3rd recess 529 Central Symmetries.

Four lower location holes 581 are offered in position corresponding with this four fixed legs 211 on the second housing 510 and the 3rd housing 560.

Because the shape of this first elasticity arm 530 and this second elasticity arm 580 is roughly L-shaped, be not single movable section, and the turning is curved, reduced the degree that stress is concentrated, so that the toughness of this time shell fragment 50 is better.

This time shell fragment 50 also comprises the first conducting terminal 58 and the second conducting terminal 59.This first conducting terminal 58 vertically extends towards this loading plate 20 near the position in corner from this second fixed arm 512, and this second conducting terminal 59 vertically extends towards this loading plate 20 near the position in corner from the 5th fixed arm 562.In the present embodiment, this first conducting terminal 58 and this second conducting terminal 59 also are one-body molded with this time shell fragment 50 all.In other embodiments, this first conducting terminal 58 and the also separately moulding of this second conducting terminal 59, again by welding, be spirally connected or other consolidation method and this time shell fragment 50 fix as one.

Such as Fig. 1 and shown in Figure 6, this activity dress group 60 comprises an adjustable shelf 61 and a coil 62.This adjustable shelf 61 has first spatial accommodation 610 that is used for accommodating this camera lens module.This coil 62 is wrapped in the periphery of this adjustable shelf 61, and the two ends of this coil 62 are electrically connected with this first conducting terminal 58 and this second conducting terminal 59 respectively.

This adjustable shelf 61 comprise one towards this on upper surface 611 and the lower surface 612 towards this time shell fragment 50 of shell fragment 40.This upper surface 611 arranges four upper protruding blocks 613 corresponding with this second recess 405 near the position of these the first spatial accommodations 610.This upper protruding block 613 passes respectively the second corresponding recess 405, and the binding site adhesive process, thereby the first inside casing 403 that will go up shell fragment 40 is fixed on this adjustable shelf 61.This lower surface 612 has four lower protruding blocks 614 and four the first reference columns 615 near the position of the first spatial accommodation 610.This lower protruding block 614 is corresponding with the 3rd recess 529 respectively, and these four the first reference columns 615 are corresponding with this second location hole 526 or the 3rd location hole 527 respectively.These four lower protruding blocks 614 pass respectively the 3rd corresponding recess 529, and these four the first reference columns 615 pass respectively corresponding the second location hole 526 or the 3rd location hole 527.And the binding site adhesive process, thereby this second inside casing 520 and the 3rd inside casing 570 of this time shell fragment 50 is fixed on this adjustable shelf 61.

Fixedly dress group 70 comprises a fixed mount 701 and a magnet assembly 702.This magnet assembly 702 only comprises the first magnet 71 and second magnet 72.The shape of the shape of this fixed mount 701 and this adjustable shelf 61 is roughly the same, and the geometric center of this fixed mount 701 has second spatial accommodation 706 that holds this activity dress group 60.This fixed mount 701 arranges four second reference columns 703 corresponding with these four first location holes near surfaces that should upper shell fragments 40, near four blind holes 704 corresponding to the surface setting of this time shell fragment 50 and this four fixed legs 211.This second reference column 703 passes successively this first location hole 404 and is somebody's turn to do upper location hole 32, support on this top board 11, thereby the first housing 402 that will go up shell fragment 40 is fixed between this loading plate 20 and this fixed mount 701.These four fixed legs 211 pass respectively these four lower location holes 581, then are contained in the corresponding blind hole 704, and by gluing process, and the second housing 510 and the 3rd housing 560 of this time shell fragment 50 is fixed between this fixed mount 701 and this loading plate 20.

This fixed mount 701 also comprises two the first side wall 701a that are oppositely arranged and two the second sidewall 701b that are oppositely arranged, these two the first side wall 701a all offer an accepting groove 701c who runs through himself, the shape of the shape of this accepting groove 701c and the first magnet 71 and the second magnet 72 is complementary, so that this first magnet 71 and this second magnet 72 can be fixed in the corresponding accepting groove 701c just.For with fixing more firm of this first magnet 71 and this second magnet 72, also can carry out a glue with corresponding accepting groove 701c intersection at this first magnet 71 and this second magnet 72.This first magnet 71 and this second magnet 72 are separately positioned on the relative both sides of this coil 62.

As shown in Figure 7,261 and one second perforation 262 of one first perforation are offered respectively in the position corresponding with this first conducting terminal 58 and this second conducting terminal 59 on this loading plate 20.So that this first conducting terminal 58 and this second conducting terminal 59 can stretch out this receiving space 201 by this first perforation 261 and this second perforation 262, to be electrically connected with external circuit.

In conjunction with Fig. 8 and shown in Figure 9, the course of work of this voice coil motor 100 is as follows: this coil 62 is communicated with external circuit, make in this coil 62 current flowing is arranged, and alive coil 62 is subject to the effect of power in the magnetic field of this

first magnet

71 and 72 generations of the second magnet, to drive this adjustable shelf 61 moving axially along this receiving space 201.Because this camera lens module (not shown) is fixed in this adjustable shelf 61, thereby so that this camera lens module also can moving axially along this receiving space 201.Upward the second inside casing 520 of the first inside casing 403 of shell fragment 40 and this time shell fragment 50 and the 3rd inside casing 570 are along with the motion generation deformation of this adjustable shelf 61, when not passing into electric current in this coil 62, the first elastic part 41, this second elastic part 42, the 3rd elastic part 43, the 4th elastic part 44, this first elasticity arm 530 and the second elasticity arm 580 recover elastic deformation, then this first inside casing 403, this second inside casing 520 and the 3rd inside casing 570 homings, thereby drive this adjustable shelf 61, then this camera lens module is also along with these adjustable shelf 61 homings.

Compared with prior art, magnet assembly in the voice coil motor of the present invention only comprises the first magnet and the second magnet that is oppositely arranged, therefore other two magnet have been saved, so that cost is effectively reduced, and weight is effectively alleviated, also saved simultaneously the time that will assemble two other magnet, so that packaging efficiency is by Effective Raise.Further, this fixed mount is offered respectively two storage tanks that are oppositely arranged, first magnet is fixed on this fixed mount, and then fixed mount and magnet are put into shell together, easy to assembly.

Be appreciated that, in the present embodiment, because this top board 11 orthographic projection on the shell fragment 40 part on this overlaps with the first elastic part 41, the second elastic part 42, the 3rd elastic part 43 and the 4th elastic part 44 of shell fragment 40 on this, the effect that therefore spacer ring 30 is set mainly is in order to make this top board 11 and should to be spaced a distance between the upper shell fragment 40, so that should have a up and down space by upper shell fragment 40.In other embodiments, this spacer ring 30 structure that also can be formed in one with this top board 11.Certainly, if the first central through hole 111 on this top board 11 is enough large, so that this top board 11 can not hinder the proper motion of shell fragment 40 on this, then this spacer ring 30 also can save.

Be appreciated that, because this magnet assembly 702 only comprises the first magnet 71 and the second magnet 72 that is oppositely arranged, so that the magnetic force of this magnet assembly 702 diminishes, can be constant by the interaction force size that the number of turn that increases this coil 62 is kept between this magnet assembly 702 and this coil 62, perhaps can also pass through some modes (such as reducing thickness etc.) with the first elastic part 41, this second elastic part 42, the 3rd elastic part 43, the 4th elastic part 44, the elastic force of this first elasticity arm 530 and the second elasticity arm 580 reduces, so that this voice coil motor 100 can work.

Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection range that all should belong to claim of the present invention with distortion.

Claims

1. voice coil motor, it comprises a housing, one loading plate, upper shell fragment, lower shell fragment, movable dress group reaches fixedly dress group, this shell and this loading plate surround a receiving space jointly, be somebody's turn to do upper shell fragment, this time shell fragment, this activity dress group reaches fixedly, and the dress group is contained in this receiving space, this activity dress group comprises an adjustable shelf and is set in coil on this adjustable shelf, the opposite end of this adjustable shelf respectively with this on shell fragment and this time shell fragment fix, fixedly the dress group comprises a fixed mount and a magnet assembly, this activity dress group is contained in this fixed mount, and this fixed mount comprises two the first side walls that are oppositely arranged and two the second sidewalls that are oppositely arranged, these two second sidewalls are all offered the accepting groove that runs through himself, this magnet assembly only comprises first magnet and second magnet, this first magnet and this second magnet are separately fixed in these two accepting grooves, and all are oppositely arranged with this coil.

2. voice coil motor as claimed in claim 1, it is characterized in that, this voice coil motor also comprises a spacer ring, this spacer ring and this fixed mount are arranged on the relative both sides of shell fragment on this, this spacer ring is offered a plurality of upper location holes, be somebody's turn to do upper shell fragment setting a plurality of first location holes corresponding with these a plurality of upper location holes, this fixed mount arranges a plurality of respectively first reference columns corresponding with location hole on this near end that should upper shell fragment, these a plurality of first reference columns pass respectively the first corresponding location hole and corresponding upper location hole successively, are fixed between this spacer ring and this fixed mount thereby should go up shell fragment.

3. voice coil motor as claimed in claim 1, it is characterized in that, should upper shell fragment be the square plate shape, upward first light hole is offered at the center of shell fragment, and shell fragment comprises one around this first light hole and away from the first housing of this first light hole, the first inside casing and a plurality of the first elastic part, the second elastic part, the 3rd elastic part and the 4th elastic part that is connected between this first housing and this first inside casing around this first light hole and close this first light hole on this.

4. voice coil motor as claimed in claim 3, it is characterized in that, this first housing comprises first side, second side, the 3rd side and four side, this first side is parallel with the 3rd side, this second side is parallel with this four side, this first elastic part is L-shaped, and comprises orthogonal first paragraph and second segment; This second elastic part is L-shaped, and comprises orthogonal the 3rd section and the 4th section; The 3rd elastic part is L-shaped, and comprises orthogonal the 5th section and the 6th section; The 4th elastic part is L-shaped, and comprises orthogonal the 7th section and the 8th section, and the 7th section coupling part with the 8th section is arc; This first paragraph overlaps with the 4th section projection section on this first side, the 3rd section overlaps with the 6th section projection section on this second side, the 5th section overlaps with the 8th section projection section on the 3rd side, and the 7th section overlaps with the projection section of this second segment on this four side.

5. voice coil motor as claimed in claim 4 is characterized in that, the coupling part of this first paragraph and this second segment is arc, and the 3rd section coupling part with the 4th section is arc, and the 5th section coupling part with the 6th section is arc.

6. voice coil motor as claimed in claim 4 is characterized in that, also offers the first groove, the second groove, the 3rd groove and the 4th groove around this first light hole; This first groove has rectilinear first the initial segment parallel with this four side, rectilinear first linkage section parallel with this first side and rectilinear first ending segment parallel with this second side, this second groove has rectilinear second the initial segment parallel with this first side, rectilinear second linkage section parallel with this second side and rectilinear second ending segment parallel with the 3rd side, the 3rd groove has rectilinear three the initial segment parallel with this second side, rectilinear three linkage section parallel with the 3rd side, rectilinear three ending segment parallel with this four side, the 4th groove has rectilinear fourth a beginning section parallel with the 3rd side, rectilinear four linkage section parallel with this four side and rectilinear four ending segment parallel with this first side, this first groove, the second groove, the 3rd groove and the 4th groove are crisscross arranged in twos; This first linkage section is between this second the initial segment and the 4th ending segment, this second linkage section is between the 3rd the initial segment and this first ending segment, the 3rd linkage section begins between section and this second ending segment this fourth, and the 4th linkage section is between this first the initial segment and the 3rd ending segment.

7. voice coil motor as claimed in claim 6 is characterized in that, this first paragraph is between this first linkage section and the 4th ending segment, and this second segment is between this first the initial segment and the 4th linkage section; The 3rd section is positioned between this second linkage section and this first ending segment, and the 4th section is positioned between this second the initial segment and this first linkage section; The 5th section is positioned between the 3rd linkage section and this second ending segment, and the 6th section is positioned between the 3rd the initial segment and this second linkage section; The 7th section is positioned between the 3rd linkage section and this second ending segment, and the 8th section is positioned between the 3rd the initial segment and the 3rd linkage section.

8. voice coil motor as claimed in claim 1, it is characterized in that, this time shell fragment comprises first and the second portion of mutual disconnection, first comprises the second housing of U-shaped, the second inside casing of U-shaped and the first L shaped elasticity arm, this first elasticity arm is connected between this first housing and the second inside casing, the shape of this second portion is the shape Central Symmetry of this first relatively, second portion comprises the 3rd housing of U-shaped, the 3rd inside casing of U-shaped and the second L shaped elasticity arm, and this second elasticity arm is connected between the 3rd housing and the 3rd inside casing.

9. voice coil motor as claimed in claim 8, it is characterized in that, this second housing comprises the first fixed arm, the second fixed arm and the 3rd fixed arm, the 3rd fixed arm connects the first fixed arm and the second fixed arm, the 3rd housing comprises the 4th fixed arm, the 5th fixed arm and the 6th fixed arm, the 4th fixed arm and this first fixed arm are located along the same line, the 5th fixed arm and this second fixed arm are located along the same line, this first elasticity arm comprises orthogonal first segment and second section, this first segment is connected to the inboard of this first fixed arm, and extend towards the 6th fixed arm along the direction that is parallel to this first fixed arm, until arrive the 4th fixed arm and the 6th fixed arm intersection, then be connected with this second section, this second section is parallel to the 6th fixed arm, and this second inside casing comprises three joint parallel with the 3rd fixed arm, four joint parallel with the first fixed arm and five joint parallel with the 6th fixed arm; One end of the 3rd joint is connected to the inboard of the 3rd fixed arm, and the other end is connected with the 4th joint; The 4th joint is connected between the 3rd joint and the 5th joint; The 5th joint is connected with the end of this second section near the end of the 6th fixed arm, and the inboard of the 4th joint arranges a tabs near the part of the 3rd joint, and this tabs is extended towards the direction of the 3rd joint.

10. voice coil motor as claimed in claim 9, it is characterized in that, this first has first conducting terminal, this second portion has second conducting terminal, offer first perforation corresponding with this first conducting terminal and second perforation corresponding with this second conducting terminal on this loading plate, this first conducting terminal and this second conducting terminal stretch out from this first perforation and this second perforation respectively, to be electrically connected with the external circuit board.