CN103414308B

CN103414308B - Voice coil motor

Info

Publication number: CN103414308B
Application number: CN201310377883.3A
Authority: CN
Inventors: 邵柏芝; 张文嘉
Original assignee: GUI XIN MAGNETOELECTRIC HI-TECH Co Ltd
Current assignee: GUI XIN MAGNETOELECTRIC HI-TECH Co Ltd
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2015-02-04
Anticipated expiration: 2033-08-27
Also published as: CN103414308A

Abstract

The invention discloses a voice coil motor which comprises an outer cover, an upper spring and a lower spring, wherein a base is arranged in the outer cover, an upper spring datum plane and a lower spring datum plane are arranged on the base, the upper spring datum plane is used for bearing the upper spring in an abutting mode, the lower spring datum plane is used for bearing the lower spring in an abutting mode, and the adjustment of the planeness and parallelism of the upper spring and the lower spring is conducted according to the structural design of the upper spring datum plane and the lower spring datum plane. According to the voice coil motor, the base is arranged in a voice coil motor structure, therefore, the problems of an existing voice coil motor are solved, cost is lowered substantially, the product development speed is increased, and excellent dip angle performance is achieved.

Description

Voice coil motor

Technical field

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

Background technology

Because the pixel request in camera cell phone is more and more higher, therefore, dynamic inclination for the voice coil motor carrying camera lens in camera module requires also more and more stricter, from less than 30 points of 3,000,000 pixels, less than 18 points of 5000000 pixels, less than 15 points of 8000000 pixels, less than 10 points of 1,300 ten thousand pixels, less than 8 points of 1,600 ten thousand pixels.

Apply to comprise coil in the voice coil motor structure of device for image, magnet, three kinds of fundamentals such as spring, and known spring be a plurality of planar spring form organize up and down arranged in parallel and connect carry camera lens carry seat, organize up and down planar spring arranged in parallel define carry seat be subject to curtage drive time guide function.

It is all the raising requiring each component precision in existing voice coil motor, reduce the summation inclination angle cumulative errors after assembling, strict inclination angle requirement is reached with attempt, as the depth of parallelism/flatness etc., but it is many that this way can make the difficulty of die sinking increase, required time, cost also improve relatively, even cannot reach this requirement.

Summary of the invention

For prior art Problems existing, the object of the present invention is to provide a kind of structure through improving, significantly reducing costs, accelerate product development speed, and reach the voice coil motor of excellent inclination angle performance.

For achieving the above object, voice coil motor of the present invention, comprise enclosing cover, upper spring and lower spring, wherein, be provided with pedestal in enclosing cover, pedestal be provided with upper spring datum level and lower spring datum level, upper spring datum level is used for breasting upper spring, lower spring datum level is used for breasting lower spring, and upper spring and lower spring carry out the adjustment of flatness, the depth of parallelism by the structural design of upper spring datum level, lower spring datum level.

Further, described voice coil motor also comprises magnet, coil, lens mount, base and stops payment seat, described enclosing cover, pedestal, upper spring, magnet, coil, lens mount, lower spring, base and stop payment seat from top to bottom successively assembling formed described voice coil motor.

Further, described pedestal comprises pedestal and is arranged on the pin body of its corner, and the end face of pedestal, as described upper spring datum level, pin body is provided with described lower spring datum level, and the lower spring datum level entirety on four pin bodies forms the installed surface of lower spring.

Further, described lower spring datum level is be arranged on the step surface in the middle part of described pin body, and the outer end of described pin body is provided with installation portion.

Further, the upper surface of described pedestal and lower surface all can as described upper spring datum levels.

Further, when the lower surface of described pedestal is as described upper spring datum level, after described upper spring and the breasting of described upper spring datum level, described magnet is directly positioned over above described upper spring, makes described upper spring between described pedestal and magnet.

Further, utilize the magnetic force between described magnet and the described enclosing cover of magnetic conductivity, make magnet provide a stable press force to give described upper spring, make that described upper spring is stable is close to described upper spring datum level.

Further, described base is by the fit structure of its corner, and be installed on described installation portion, described base contacts with lower spring, makes described lower spring between described base and described pedestal.

Further, described base is that nonmetallic materials are made.

Further, described in stop payment seat be magnetic conductive material, described in stop payment seat and be filled on described base, make described magnet and stop payment to produce magnetic flux between seat and then attract each other, suction will make described base produce thrust to make described lower spring be close to described lower spring datum level.

The present invention by being provided with a pedestal in voice coil motor framework, thus overcomes existing voice coil motor institute problems faced, and then significantly reduces costs, and accelerates product development speed, and reaches excellent inclination angle performance.

Accompanying drawing explanation

Fig. 1 is the Split type structure schematic diagram of voice coil motor of the present invention;

Fig. 2 is the overall body structure schematic diagram of voice coil motor of the present invention;

Fig. 3 is base construction schematic diagram;

Fig. 4 is A portion enlarged drawing in Fig. 3;

Fig. 5 is the structural representation after enclosing cover, upper spring, lower spring, pedestal installation;

Fig. 6 is the mounting structure schematic diagram of magnet;

Fig. 7 is the structural representation of another using state of pedestal;

Fig. 8 is B portion enlarged drawing in Fig. 7;

Fig. 9 is the structure schematic diagram of Fig. 7;

Figure 10 is C portion enlarged drawing in Fig. 9;

Figure 11 is that in Fig. 7, pedestal installs the structural representation after spring, lower spring;

Figure 12 is base and stops payment the structural representation that seat installs mutually.

Embodiment

Below, with reference to accompanying drawing, the present invention is more fully illustrated, shown in the drawings of exemplary embodiment of the present invention.But the present invention can be presented as multiple multi-form, and should not be construed as the exemplary embodiment being confined to describe here.But, these embodiments are provided, thus make the present invention comprehensively with complete, and scope of the present invention is fully conveyed to those of ordinary skill in the art.

For ease of illustrating, here can use such as " on ", the space relative terms such as D score " left side " " right side ", for illustration of the element of shown in figure or the feature relation relative to another element or feature.It should be understood that except the orientation shown in figure, spatial terminology is intended to comprise device different azimuth in use or operation.Such as, if the device in figure is squeezed, be stated as the element being positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, exemplary term D score can comprise upper and lower both orientation.Device can otherwise be located (90-degree rotation or be positioned at other orientation), and space used here illustrates relatively can correspondingly explain.

As shown in Figures 1 to 12, voice coil motor of the present invention, comprise enclosing cover 1, pedestal 2, upper spring 3, magnet 4, coil 5, lens mount 6, lower spring 7, base 8 and stop payment seat 9, enclosing cover 1, pedestal 2, upper spring 3, magnet 4, coil 5, lens mount 6, lower spring 7, base 8 and stop payment seat 9 from top to bottom successively assembling formed described voice coil motor.

Pedestal 2 comprises pedestal 12 and is arranged on the pin body 13 of its corner, the end face of pedestal 12 is as upper spring datum level 10, pin body 13 is provided with lower spring datum level 11, upper spring datum level 10 is for breasting upper spring 3, lower spring datum level 11 forms the installed surface of lower spring 7 for lower spring datum level 11 entirety on breasting lower spring 7, four pin bodies 13.Lower spring datum level 11 is for being arranged on the step surface in the middle part of pin body 13, and the outer end of pin body 13 is provided with installation portion 14.

Different according to the version of installing, the upper surface of pedestal 12 and lower surface all can as upper spring datum levels 10.

When the lower surface of pedestal 12 is as upper spring datum level 10, as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, upper spring 3 is with outside upper spring datum level 10 breasting of pedestal 2, can directly magnet 4 be positioned over above upper spring 3, make upper spring 3 between pedestal 2 and magnet 4, and utilize the magnetic force between a plurality of magnet 4 and magnetic conductivity shell, magnet 4 can be made to provide a stable press force to give upper spring 3, and then the stable upper spring datum level 10 being close to pedestal 2 and providing of upper spring 3 is provided.

When the upper surface of pedestal 12 is as upper spring datum level 10, as shown in Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, lower spring datum level 11 is still for being arranged on the step surface in the middle part of pin body 13, during installation, upper spring 3 bears against on the upper surface of pedestal 12, namely upper spring 3 will between pedestal 12 and enclosing cover 1, and magnet 4 is between pedestal 2 and lower spring 7.

During integral installation, base 8 is by the fit structure of its corner, and be installed on installation portion 14, base 8 contacts with lower spring 7, makes lower spring 7 between base 8 and described pedestal 2.Base 8 is made for nonmetallic materials.

Stop payment seat 9 for magnetic conductive material, stopping payment seat 9 is filled on base 8, magnet 4 can be made and stop payment to produce magnetic flux between seat 9 and then attract each other, because magnet 4 strong adsorption is on the enclosing cover 1 of magnetic conductive material, therefore, magnet 4 and the attraction of stopping payment between seat 9 stop payment seat 9 by the thrust of base 8 toward magnet 4 direction movement by being formed, and lower spring 7 is between pedestal 2 and base 8, therefore, stopping payment the suction that seat 9 and magnet 4 produces allows lower spring 7 be close to the lower spring datum level 11 of pedestal 2 by making base 8 produce a thrust.

In the present invention, a pedestal 2 is devised in voice coil motor framework, pedestal 2 can be used as the breasting datum level organizing planar spring arranged in parallel up and down simultaneously, therefore, in mould and die accuracy controls, keyholed back plate pedestal 2 is only needed to carry flatness and the depth of parallelism of the datum level organizing planar spring arranged in parallel up and down, namely spring 3 and lower spring 7 are by upper spring datum level 10, the structural design of lower spring datum level 11 carries out flatness, the adjustment of the depth of parallelism, existing voice coil motor institute problems faced can be overcome by enforcement of the present invention, and then significantly reduce costs, accelerate product development speed, and reach excellent inclination angle performance.

Claims

1. voice coil motor, it is characterized in that, comprise enclosing cover, upper spring and lower spring, wherein, be provided with pedestal in enclosing cover, pedestal be provided with upper spring datum level and lower spring datum level, upper spring datum level is used for breasting upper spring, lower spring datum level is used for breasting lower spring, and upper spring and lower spring carry out the adjustment of flatness, the depth of parallelism by the structural design of upper spring datum level, lower spring datum level; Described pedestal comprises pedestal and is arranged on the pin body of its corner, and the upper surface of described pedestal and lower surface all can as described upper spring datum levels.

2. voice coil motor as claimed in claim 1, it is characterized in that, described voice coil motor also comprises magnet, coil, lens mount, base and stops payment seat, described enclosing cover, pedestal, upper spring, magnet, coil, lens mount, lower spring, base and stop payment seat from top to bottom successively assembling formed described voice coil motor.

3. voice coil motor as claimed in claim 2, it is characterized in that, the end face of described pedestal, as described upper spring datum level, pin body is provided with described lower spring datum level, and the lower spring datum level entirety on four pin bodies forms the installed surface of lower spring.

4. voice coil motor as claimed in claim 3, it is characterized in that, described lower spring datum level is be arranged on the step surface in the middle part of described pin body, and the outer end of described pin body is provided with installation portion.

5. voice coil motor as claimed in claim 2, it is characterized in that, when the lower surface of described pedestal is as described upper spring datum level, after described upper spring and the breasting of described upper spring datum level, described magnet is directly positioned over above described upper spring, makes described upper spring between described pedestal and magnet.

6. voice coil motor as claimed in claim 2, is characterized in that, utilize the magnetic force between described magnet and the described enclosing cover of magnetic conductivity, makes magnet provide a stable press force to give described upper spring, makes that described upper spring is stable is close to described upper spring datum level.

7. voice coil motor as claimed in claim 4, is characterized in that, described base is by the fit structure of its corner, and be installed on described installation portion, described base contacts with lower spring, makes described lower spring between described base and described pedestal.

8. voice coil motor as claimed in claim 2, it is characterized in that, described base is that nonmetallic materials are made.

9. voice coil motor as claimed in claim 2, it is characterized in that, described seat of stopping payment is magnetic conductive material, described seat of stopping payment is filled on described base, make described magnet and stop payment to produce magnetic flux between seat and then attract each other, suction will make described base produce thrust to make described lower spring be close to described lower spring datum level.