CN201096947Y - Sound ring motor for preventing lens group from rotating upon entry - Google Patents

Sound ring motor for preventing lens group from rotating upon entry Download PDF

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Publication number
CN201096947Y
CN201096947Y CNU2007201941192U2007201941192U CN200720194119U CN201096947Y CN 201096947 Y CN201096947 Y CN 201096947Y CN U2007201941192U2007201941192 U CNU2007201941192U2007201941192 U CN U2007201941192U2007201941192U CN 200720194119 U CN200720194119 U CN 200720194119U CN 201096947 Y CN201096947 Y CN 201096947Y
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CN
China
Prior art keywords
described
voice coil
coil motor
plurality
shell fragment
Prior art date
Application number
CNU2007201941192U2007201941192U
Other languages
Chinese (zh)
Inventor
唐兆槐
Original Assignee
亚洲光学股份有限公司
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Publication date
Application filed by 亚洲光学股份有限公司 filed Critical 亚洲光学股份有限公司
Priority to CNU2007201941192U2007201941192U priority Critical patent/CN201096947Y/en
Application granted granted Critical
Publication of CN201096947Y publication Critical patent/CN201096947Y/en

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Abstract

The utility model relates to a voice coil motor which can prevent lenses from rotating when the lenses being grouped. The utility model comprises a base seat held and fixed, a lower shrapnel sheet, a sliding carrier group used for fixing the lens, a magnetic yoke group nested on the carrier group, an upper shrapnel sheet and an upper cover in sequence. The voice coil motor is characterized in that the carrier group comprises an inner cylinder with a central hole, a ring seat is arranged on the outer periphery thereof, and a plurality of grooves are arranged between the inner cylinder and the ring seat; a plurality of magnetic yoke claws extending downward are arranged in the magnetic yoke group; the magnetic yoke claws are matched with the grooves. The structure can prevent the carrier group from rotating when the lenses are screwed into the central hole of the carrier group. Certain gaps can be left between the magnetic yoke claws and the grooves, the distortion amount is small, the larger angle rotating can not occur, and therefore to cause the lower shrapnel sheet connected with the coil to be distorted. Simultaneously, the occupying space of the structure which can prevent rotating adopted by the voice coil motor is small, the assembly is very convenient, and the man-hour can be saved.

Description

Can prevent the voice coil motor of the fashionable rotation of lens group

Technical field

The utility model relates to a kind of voice coil motor, more particularly, relates to a kind of voice coil motor that prevents the fashionable rotation of lens group.

Background technology

In the especially small-sized camera installation of various camera installations, often adopt voice coil motor (Voice CoilMotor is called for short VCM) to drive the camera lens straight line and move, reach the purpose of focusing.Fig. 1 is the decomposing schematic representation of the part assembly of existing voice coil motor.As shown in Figure 1, voice coil motor generally includes the pedestal 1 that is maintained fixed, and is mounted slidably carrier 2 in pedestal 1.Carrier 2 has center screw 3, is used for camera lens is fixed therein.On the outer peripheral face of carrier 2, fixedly install coil (not shown), and this coil is connected with power supply; In pedestal 1, also be provided with corresponding magnet (not shown).Behind coil electricity, under the driving of electromagnetic force, carrier 2 away from or near pedestal 1, drive the camera lens rectilinear motion, thereby realize focusing.

Because when camera lens was screwed in carrier 2, carrier 2 can rotate, and causes higher fraction defective, therefore the outer peripheral face of carrier 2 is provided with a plurality of radial projection 4, and the inner peripheral surface of pedestal 1 is provided with corresponding groove 5.A plurality of radial projection 4 cooperate with corresponding groove 5, to guarantee that carrier 2 can not rotate when screwing in camera lens.Though this structure can prevent carrier 2 and rotate with respect to pedestal 1, increase the volume of voice coil motor.Day by day under the trend of slimming, obviously can not satisfy the requirement of use at camera, shooting mobile phone etc.

The utility model content

The technical problems to be solved in the utility model is that though can prevent to rotate at the voice coil motor of prior art, the defective that volume is bigger provides a kind of fashionable rotation of lens group and less voice coil motor of volume of preventing when camera lens screws in.

The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of voice coil motor that prevents the fashionable rotation of lens group, comprise successively the pedestal that is maintained fixed, down shell fragment, be used for fixing camera lens slidably vehicle group, be set in yoke group on the described vehicle group, go up shell fragment and loam cake, wherein, described vehicle group comprises the inner cylinder that has center pit, its outer peripheral face is provided with ring seat, is provided with a plurality of grooves between the two; Be provided with the yoke pawl of a plurality of downward extensions in the described yoke group; Described yoke pawl and described groove fit.

In the voice coil motor that prevents the fashionable rotation of lens group described in the utility model, the tie point by each interval between the outer peripheral face of described inner cylinder and the inner peripheral surface of described ring seat links to each other, and forms described groove between each tie point.

In the voice coil motor that prevents the fashionable rotation of lens group described in the utility model, leave the gap between described yoke pawl and the described groove.

In the voice coil motor that prevents the fashionable rotation of lens group described in the utility model, described gap is 0.1mm.

In the voice coil motor that prevents the fashionable rotation of lens group described in the utility model, also comprise the pressing plate that is arranged on described shell fragment down top, described pressing plate bottom is provided with a plurality of first reference columns, on described pedestal and following shell fragment, be respectively arranged with corresponding a plurality of first pilot holes and second pilot hole.

In the voice coil motor that prevents the fashionable rotation of lens group described in the utility model, the end face of described pressing plate is provided with a plurality of columns, and the main body of described a plurality of columns and described pressing plate is formed for holding the spatial accommodation of described vehicle group jointly; On the top of each column, be provided with second reference column, on described shell fragment and on cover, be respectively arranged with corresponding the 3rd pilot hole and the 4th pilot hole.

In the voice coil motor that prevents the fashionable rotation of lens group described in the utility model, described pedestal is provided with a plurality of columns, and the top of each column is provided with the 3rd reference column; Described go up shell fragment and on cover, be respectively arranged with corresponding the 3rd pilot hole and the 4th pilot hole.

Implement the voice coil motor that prevents the fashionable rotation of lens group of the present utility model, have following beneficial effect: the yoke pawl of yoke group and the groove fit on the vehicle group, in the time of can preventing to screw in camera lens in the center pit of vehicle group, vehicle group rotates.Can leave certain clearance between yoke pawl and the groove, deflection is very little, and the rotation than wide-angle, the following shell fragment distortion that causes being connected with coil can not take place.Simultaneously, the anti-rotation structure that this voice coil motor adopted takes up room very little, assembles very conveniently, can save man-hour.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the decomposing schematic representation of the part assembly of existing voice coil motor;

Fig. 2 is the vertical view of voice coil motor among Fig. 1;

Fig. 3 is the decomposing schematic representation of voice coil motor of the present utility model;

Fig. 4 is the sectional view of voice coil motor of the present utility model;

Fig. 5 is the vertical view of voice coil motor of the present utility model, shows and does not organize the state of going into to go up shell fragment and loam cake.

Embodiment

As shown in Figure 3, in the utility model, voice coil motor 100 comprise successively from bottom to up the pedestal 101 that is maintained fixed, down shell fragment 102, pressing plate 103, be used for fixing camera lens vehicle group 104, be set in the outer yoke group 105 of vehicle group 104, go up shell fragment 106 and loam cake 107.Vehicle group 104 is provided with coil (not shown), and comprises inner cylinder 108, and the outer peripheral face of inner cylinder 108 is provided with ring seat 110.Inner cylinder 108 is provided with center pit 109.The internal diameter of center pit 109 is suitable with the external diameter of corresponding camera lens, can engage with camera lens, thereby camera lens is fixed therein by the mode of internal thread for example is set.With reference to Fig. 3 and Fig. 4, link to each other by evenly spaced tie point 111 each other between the inner peripheral surface of the outer peripheral face of inner cylinder 108 and ring seat 110, form groove 112 between each tie point 111.

Vehicle group 104 is slidably disposed in the voice coil motor 100, can drive camera lens away from or near pedestal 101, thereby away from or near photo-sensitive cell, reach the purpose of focusing.As depicted in figs. 1 and 2, for fear of camera lens is caused interference, on all component of voice coil motor 100, be provided with diameter at least greater than the center pit of diameter of lens.Last shell fragment 106, down the center-hole diameter of shell fragment 102 is all at least less than the external diameter of vehicle group 104.Following shell fragment 102 comprises two connection terminals 121, links to each other with the positive and negative level of power supply respectively.And the winding wire of vehicle group 104 is connected with following shell fragment 102.When vehicle group 104 rectilinear motions to last shell fragment 106 or down during shell fragment 102 position contacting, these two shell fragments are respectively applied at upper and lower upwards for vehicle group 104 provides elastic force, balance each other with the electromagnetic force that produces behind the coil electricity.In order to fix following shell fragment 102 better and to hold other assembly, in voice coil motor 100, be provided with pressing plate 103.The bottom of pressing plate 103 is provided with a plurality of first reference columns 113, on pedestal 101 and following shell fragment 102, is respectively arranged with corresponding a plurality of first pilot holes 114, second pilot hole 115.First reference column 113 successively passes second pilot hole 115, first pilot hole 114, is connected with pedestal 101, and will descends shell fragment 102 to be fixed between pedestal 101 and the pressing plate 103.

On four jiaos of the end faces of pressing plate 103 a plurality of columns 116 are set, these a plurality of columns 116 and the main body of pressing plate 103 be common to form a spatial accommodation, is used to hold vehicle group 104 and allows it to slide therein.On vehicle group 104, be arranged with yoke group 105.In yoke group 105, be provided with a plurality of yoke pawls 117.With reference to Fig. 4 and Fig. 5, yoke pawl 117 extends downwards, and cooperates with a plurality of grooves 112 on the vehicle group 104.Leave certain clearance between yoke pawl 117 and groove 112, this gap is about 0.1mm, to eliminate assembly error, prevents from camera lens is caused interference.Be provided with magnet in the yoke group 105, behind the coil electricity of vehicle group 104, produce magnetic field, vehicle group 104 under the effect of electromagnetic force away from or near pedestal 101, focus, and in the place's stop motion that balances each other of electromagnetic force and shell fragment elastic force.By the power of Control current, i.e. the distance of may command vehicle group 104 motions.

The outer peripheral face of yoke group 105 is fixed between a plurality of columns 116, and the cross section of column 116 is roughly triangular in shape, can prevent 105 rotations of yoke group.On the top of each column 116, be provided with second reference column 118.On last shell fragment 106 and loam cake 107, be respectively arranged with corresponding the 3rd pilot hole 119, the 4th pilot hole 120.Second reference column 118 successively cooperates with the 3rd pilot hole 119, the 4th pilot hole 120, thereby loam cake 107 is connected on the pedestal 101, and will go up shell fragment 106 and be fixed between yoke group 105 and the loam cake 107.

Though more than described each assembly and be assembled into situation on the pedestal 101 by pressing plate 103, but also can omit pressing plate 103, a plurality of columns are set on pedestal 101 in a similar fashion, and the 3rd reference column is set on the column top, directly will descend shell fragment 102 to be fixed on the pedestal in modes such as gummeds this moment, and vehicle group 104 and yoke group 105 are arranged in the pedestal; Be connected with the 3rd reference column of pedestal 101 and go up shell fragment 106 and loam cake 107 the 3rd, the 4th pilot hole 119,120 by separately, also can reach same purpose.

Optionally, also can keep pressing plate 103, save the column 116 and second reference column 118 of pressing plate 103 tops, a plurality of columns are set on pedestal 101, and the 3rd reference column is set on the column top, be connected with the 3rd reference column of pedestal 101 and go up shell fragment 106 and loam cake 107 the 3rd, the 4th pilot hole 119,120 by separately, this moment pressing plate 103 only first reference column 113 by the bottom and pedestal 101 are connected with first, second pilot hole 114,115 on the following shell fragment 102, thereby will descend shell fragment 102 to be fixed on the pedestal 101, also can reach same purpose.

During assembling, group is gone into each assembly and each assembly is fixed between pedestal 101 and the loam cake 107 successively from bottom to up.This moment, yoke group 105 yoke pawl 117 cooperated with groove 112 on the vehicle group 104, left certain clearance between the two.When in the center pit 109 of vehicle group 104, screwing in camera lens, vehicle group 104 can only be in the scope in this gap rotational deformation, deflection is very little, the rotation than wide-angle can not take place, the following shell fragment that causes being connected with coil is out of shape.Simultaneously, the anti-rotation structure that this voice coil motor adopted takes up room very little, assembles very conveniently, can save man-hour.

Claims (7)

1, a kind of voice coil motor that prevents the fashionable rotation of lens group, comprise successively the pedestal that is maintained fixed, down shell fragment, be used for fixing camera lens slidably vehicle group, be set in yoke group on the described vehicle group, go up shell fragment and loam cake, it is characterized in that, described vehicle group comprises the inner cylinder that has center pit, its outer peripheral face is provided with ring seat, is provided with a plurality of grooves between the two; Be provided with the yoke pawl of a plurality of downward extensions in the described yoke group; Described yoke pawl and described groove fit.
2, the voice coil motor that prevents the fashionable rotation of lens group according to claim 1 is characterized in that, the tie point by each interval between the outer peripheral face of described inner cylinder and the inner peripheral surface of described ring seat links to each other, and forms described groove between each tie point.
3, the voice coil motor that prevents the fashionable rotation of lens group according to claim 1 is characterized in that, leaves the gap between described yoke pawl and the described groove.
4, the voice coil motor that prevents the fashionable rotation of lens group according to claim 3 is characterized in that, described gap is 0.1mm.
5, the voice coil motor that prevents the fashionable rotation of lens group according to claim 1, it is characterized in that, also comprise the pressing plate that is arranged on described shell fragment down top, described pressing plate bottom is provided with a plurality of first reference columns, on described pedestal and following shell fragment, be respectively arranged with corresponding a plurality of first pilot holes and second pilot hole.
6, the voice coil motor that prevents the fashionable rotation of lens group according to claim 5, it is characterized in that, the end face of described pressing plate is provided with a plurality of columns, and the main body of described a plurality of columns and described pressing plate is formed for holding the spatial accommodation of described vehicle group jointly; On the top of each column, be provided with second reference column, on described shell fragment and on cover, be respectively arranged with corresponding the 3rd pilot hole and the 4th pilot hole.
7, can prevent the voice coil motor of the fashionable rotation of lens group according to claim 1 or 5, it is characterized in that described pedestal is provided with a plurality of columns, and the top of each column is provided with the 3rd reference column; Described go up shell fragment and on cover, be respectively arranged with corresponding the 3rd pilot hole and the 4th pilot hole.
CNU2007201941192U2007201941192U 2007-11-01 2007-11-01 Sound ring motor for preventing lens group from rotating upon entry CN201096947Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201941192U2007201941192U CN201096947Y (en) 2007-11-01 2007-11-01 Sound ring motor for preventing lens group from rotating upon entry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201941192U2007201941192U CN201096947Y (en) 2007-11-01 2007-11-01 Sound ring motor for preventing lens group from rotating upon entry

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CN201096947Y true CN201096947Y (en) 2008-08-06

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101741207A (en) * 2008-11-17 2010-06-16 鸿富锦精密工业(深圳)有限公司 Voice coil motor and method for assembling zoom lens module
CN101840048A (en) * 2009-03-17 2010-09-22 阿尔卑斯电气株式会社 Lens driver
CN102025255A (en) * 2009-09-09 2011-04-20 鸿富锦精密工业(深圳)有限公司 Voice coil motor and camera module
CN102263472A (en) * 2010-05-31 2011-11-30 Lg伊诺特有限公司 Voice coil motor
CN102347679A (en) * 2010-07-30 2012-02-08 Lg伊诺特有限公司 Voice coil motor
CN102522873A (en) * 2011-12-10 2012-06-27 东莞市旭业光电科技有限公司 Voice coil motor and assembling die as well as assembling process of voice coil motor
CN101931305B (en) * 2009-06-25 2013-02-13 鸿富锦精密工业(深圳)有限公司 Voice coil motor combination
US8630048B2 (en) 2009-02-17 2014-01-14 Lg Innotek Co., Ltd. Motor for driving lens
CN104849832A (en) * 2015-05-19 2015-08-19 苏州久易光电科技有限公司 High-stability voice coil motor used for lens driving
CN107482821A (en) * 2017-09-19 2017-12-15 苏州聚力电机有限公司 A kind of VCM structures of anti-rotation

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101741207A (en) * 2008-11-17 2010-06-16 鸿富锦精密工业(深圳)有限公司 Voice coil motor and method for assembling zoom lens module
US8630048B2 (en) 2009-02-17 2014-01-14 Lg Innotek Co., Ltd. Motor for driving lens
US9356501B2 (en) 2009-02-17 2016-05-31 Lg Innotek Co., Ltd. Motor for driving lens
US9046640B2 (en) 2009-02-17 2015-06-02 Lg Innotek Co., Ltd. Motor for driving lens
US10088646B2 (en) 2009-02-17 2018-10-02 Lg Innotek Co., Ltd. Motor for driving lens
CN101840048A (en) * 2009-03-17 2010-09-22 阿尔卑斯电气株式会社 Lens driver
CN101840048B (en) * 2009-03-17 2012-11-21 阿尔卑斯电气株式会社 Lens driving device
CN101931305B (en) * 2009-06-25 2013-02-13 鸿富锦精密工业(深圳)有限公司 Voice coil motor combination
CN102025255A (en) * 2009-09-09 2011-04-20 鸿富锦精密工业(深圳)有限公司 Voice coil motor and camera module
CN102025255B (en) * 2009-09-09 2013-06-05 鸿富锦精密工业(深圳)有限公司 Voice coil motor and camera module
CN102263472B (en) * 2010-05-31 2014-10-08 Lg伊诺特有限公司 Voice coil motor
CN102263472A (en) * 2010-05-31 2011-11-30 Lg伊诺特有限公司 Voice coil motor
US9140884B2 (en) 2010-05-31 2015-09-22 Lg Innotek Co., Ltd. Voice coil motor
CN102347679A (en) * 2010-07-30 2012-02-08 Lg伊诺特有限公司 Voice coil motor
US9575283B2 (en) 2010-07-30 2017-02-21 Lg Innotek Co., Ltd. Voice coil motor
CN102347679B (en) * 2010-07-30 2015-09-16 Lg伊诺特有限公司 Voice coil motor
US9190891B2 (en) 2010-07-30 2015-11-17 Lg Innotek Co., Ltd. Voice coil motor
US10185117B2 (en) 2010-07-30 2019-01-22 Lg Innotek Co., Ltd. Voice coil motor
CN102522873A (en) * 2011-12-10 2012-06-27 东莞市旭业光电科技有限公司 Voice coil motor and assembling die as well as assembling process of voice coil motor
CN102522873B (en) * 2011-12-10 2014-10-29 东莞市旭业光电科技有限公司 Voice coil motor and assembling die as well as assembling process of voice coil motor
CN104849832A (en) * 2015-05-19 2015-08-19 苏州久易光电科技有限公司 High-stability voice coil motor used for lens driving
CN104849832B (en) * 2015-05-19 2017-06-09 苏州久易光电科技有限公司 A kind of high stability voice coil motor driven for lens
CN107482821A (en) * 2017-09-19 2017-12-15 苏州聚力电机有限公司 A kind of VCM structures of anti-rotation

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
ASS Succession or assignment of patent right

Owner name: DONGGUAN TAILIAN OPTICAL CO., LTD.

Free format text: FORMER OWNER: ASIA OPTICAL CO., LTD.

Effective date: 20090828

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20090828

Address after: Guangdong city of Dongguan province Changan Zhen Xiao Bian Cun, zip code: 511700

Patentee after: Dongguan union optics Co., Ltd.

Address before: Taichung County, Taichung County, Taiwan, China, 22-3 South Road, Taichung two, postcode:

Patentee before: Asia Optics Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080806

Termination date: 20151101

EXPY Termination of patent right or utility model