CN202230236U

CN202230236U - Magnet seat structure of automatic focusing module

Info

Publication number: CN202230236U
Application number: CN201120310544XU
Authority: CN
Inventors: 吴富源; 徐尚榆
Original assignee: TDK Taiwan Corp
Current assignee: TDK Taiwan Corp
Priority date: 2010-11-09
Filing date: 2011-08-19
Publication date: 2012-05-23
Anticipated expiration: 2021-08-19
Also published as: TW201219956A; TWI463238B

Abstract

A magnet base structure of automatic focusing module at least includes an outer frame, four magnets can be assembled at four internal peripheral positions, a bearing base can be assembled with a lens and assembled in the outer frame by at least one elastic component, a coil can be assembled outside the bearing base to drive the bearing base to move up and down for focusing, wherein an L-shaped plate bending inwards is arranged at four corner positions of the outer frame, extends between the coil and the bearing base and just separates the coil to correspond to the space between two magnets, so as to enhance the magnetic efficiency driven by the electromagnetic field of the coil at the corner, improve the driving force of the electromagnetic field of the coil and achieve the purpose of saving electricity.

Description

The magnetic receiver structure of automatic Focusing module

Technical field

The utility model relates to a kind of magnetic receiver structure of automatic Focusing module, particularly a kind of structure of in the automatic Focusing module of micro-lens, strengthening the magnetic strength efficient of coil.

Background technology

Because the progress of science and technology; It is considerably little to make that the volume of digital camera contracts, and present mobile phone is also mostly built the function that is equipped with digital camera, and these all give the credit to the modularization and the microminiaturization of pick-up lens; And the automatic focusing Drive Structure of numerous species is arranged in micro-lens; That the most generally be used at present is voice coil motor (VCM), and volume is little, power consumption is few, the activity displacement accurately reaches advantages such as cheap because of it has, and the short distance that is suitable as the automatic focusing of micro-lens drives.

As shown in Figure 1; Perspective exploded view for existing automatic Focusing module; This existing structure includes an outer mask 10, a bottom 11, a lens bearing seat 12, encloses all round in this outer mask 10 to embed four magnet 14 respectively, is provided with screw thread 15 in this lens bearing seat 12; Can screw in a camera lens 16; These lens bearing seat 12 peripheries can coat a coil 17, and lens bearing seat 12 can by shell fragment on one 18 and once shell fragment 19 be supported on the center of four magnet 14, make them can up and down four magnet, 14 centers in outer mask 10; Can switching on by coil 17, the generation polarity of the magnetic fields repel each other with magnet 14 or suction mutually, and then drive lens bearing seat 12 and the automatic action of focusing of camera lens 16 dos.

Fig. 2 is the schematic perspective view after the outer mask of Fig. 1, magnet and the coil combination; Wherein should magnet 14 not arranged outer mask 10 four interior corners 20; The electromagnetic field that makes this coil 17 produced can't repel each other with magnet 14 in this corner 20 or inhale mutually, forms the waste of electromagnetic field, and has reduced the efficient that drives; So for the automatic Focusing module of microminiaturization, comparatively power consumption just can reach the purpose of driving.

Therefore; Above-mentioned existing automatic Focusing module still has amendatory space; So the utility model proposes a kind of magnetic receiver structure of automatic Focusing module, each extends a L template by apical margin in four corners of metal outer frame cover, and corresponding between two magnet; With strengthen and coil between magnetic efficiency, can prevent that more automatic Focusing module is because of screwing in the damage of reversing that camera lens causes.

The utility model content

The purpose of the utility model is to provide a kind of magnetic receiver structure of automatic Focusing module, can increase the magnetic field efficient of coil corner, to improve the driving force of coil electromagnetism field, reaches purpose of power saving.

For achieving the above object, the utility model provides a kind of magnetic receiver structure of automatic Focusing module, and this automatic Focusing module comprises at least:

One housing is metal material spare, and four magnet are assembled at the place that encloses all round that it is inner;

One load bearing seat is hollow out axis hole structure, and assembling one camera lens utilizes at least one elastic component to be assembled in this housing in its axis hole; And

One coil is assembled in the outside of this load bearing seat, and corresponding those magnet that generate an electromagnetic field are done to repel each other or inhaled action mutually, and this load bearing seat is up and down focuses to drive;

Wherein, four angle position places of this housing apical margin establish the L template that bends inwards, extend between this coil and this load bearing seat, and just across coil corresponding the space between two magnet.

The magnetic receiver structure of above-mentioned automatic Focusing module wherein, respectively is formed with an accommodation space between corner that this load bearing seat is outer and coil, in order to ccontaining this L template.

The magnetic receiver structure of above-mentioned automatic Focusing module, wherein, those L templates and this housing is one-body molded processes.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail, but not as the qualification to the utility model.

Description of drawings

Fig. 1 is the perspective exploded view of existing automatic Focusing module;

Fig. 2 is the schematic perspective view after the outer mask of Fig. 1, magnet and the coil combination;

Fig. 3 is the first embodiment schematic perspective view of the utility model;

Fig. 4 is the partial schematic sectional view after the utility model Fig. 3 subelement combination.

Wherein, Reference numeral

10 outer masks

11 bottoms

12 lens bearing seat

14 magnet

15 screw threads

16 camera lenses

17 coils

Shell fragment on 18

19 times shell fragments

20 corners

30 housings

32 magnet

34 load bearing seats

36 elastic components

37 poppets

38 coils

The 40L template

41 accommodation spaces

50 camera lenses

Embodiment

In order further to understand the utility model is to reach technology, means and the effect that predetermined purpose is taked; See also following detailed description and accompanying drawing about the utility model; Believe purpose, characteristic and the characteristics of the utility model; Go deep into and concrete understanding when getting one thus, yet appended accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited.

See also shown in Figure 3; Be the first embodiment schematic perspective view of the utility model, Fig. 4 is the partial schematic sectional view after the utility model Fig. 3 subelement combination, and the automatic Focusing module of the utility model includes a housing 30, four magnet 32, a load bearing seat 34, at least one elastic component 36, a poppet 37, a coil 38 at least; Wherein this housing 30 is square; Be to be metal material, it is inner encloses the place all round and can assemble those magnet 32, and this load bearing seat 34 is hollow out axis hole structure; Can assemble a camera lens 50 in its axis hole, this elastic component 36 capable of using is assembled in this housing 30.

Wherein this elastic component 36 comprises outer rim fixed part and inner edge movable part; And this load bearing seat 34 is the inner edge movable parts that are connected in this elastic component 36; The outer rim fixed part of this elastic component 36 then utilizes this poppet 37 to be connected on the housing 30; 30 of this poppet 37 and housings are formed with a up and down space, make this load bearing seat 34 to suspend and are active in this housing 30 inside.

Wherein this coil 38 is cubic hollow out ring-type, can be assembled in the outside of this load bearing seat 34, can generate an electromagnetic field after the energising, can do to repel each other or suction action mutually by corresponding those magnet 32, to drive this load bearing seat 34 up and down actions of focusing automatically.

Wherein this load bearing seat 34 outer four corners and 38 of coils respectively are formed with an accommodation space 41, and preferably this load bearing seat 34 is positioned at four corners and is provided with the conduit that inwardly contracts to form this accommodation space 41.

Four of this housing 30 angle position places wherein; Respectively establish the L template 40 that bends inwards by apical margin; And extend in this load bearing seat 34 and 38 formed accommodation spaces 41 of coil; And this L template 40 just across coil 38 corresponding formed space between two magnet 32, preferably this L template 40 is to be formed in one with this housing 30 to process, and can strengthen the magnetic efficiency that electromagnetic field that this coil 38 is positioned at place, corner limit drives.

And because this L template 40 stretches in the accommodation space 41 of this load bearing seat 34; So in the time of can preventing that this camera lens 50 from screwing in this automatic Focusing module; Elastic component 36 movable parts that caused reverse damage, so this L template 40 has the effect of the automatic Focusing module movable part horizontal torsion of protection simultaneously.

According to the actual experiment result; The utility model is the L template of the above-mentioned housing corner that discloses of ability mat really; Strengthen nearly 1.95 times of coil magnetic field efficient on the corner; Therefore can increase the driving force of coil electromagnetism field, to reach less electricity consumption, so can provide a kind of far different in the design of prior art.

Certainly; The utility model also can have other various embodiments; Under the situation that does not deviate from the utility model spirit and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims

1. the magnetic receiver structure of an automatic Focusing module is characterized in that, this automatic Focusing module comprises at least:

2. the magnetic receiver structure of automatic Focusing module according to claim 1 is characterized in that, respectively is formed with an accommodation space between corner that this load bearing seat is outer and coil, in order to ccontaining this L template.

3. the magnetic receiver structure of automatic Focusing module according to claim 1 is characterized in that, those L templates and this housing is one-body molded processes.