CN2847327Y

CN2847327Y - Focusing driver

Info

Publication number: CN2847327Y
Application number: CN200520129297.8U
Authority: CN
Inventors: 张宗凯; 陈建国; 钟郁芬
Original assignee: TAIRUI SCIENCE-TECHNOLOGY Co Ltd
Current assignee: TAIRUI SCIENCE-TECHNOLOGY Co Ltd
Priority date: 2005-10-13
Filing date: 2005-10-13
Publication date: 2006-12-13
Anticipated expiration: 2015-10-13

Abstract

The utility model relates to a focusing driver, which comprises a base seat, a lens carrier and a plurality of linear springs, wherein the periphery of the interior of the base seat is provided with a magnet; the lens carrier is arranged in a central position in the base seat; the periphery of the lens carrier is wound with a coil. The lens carrier is suspended in the base seat by the linear springs in an interleaving mode from top to bottom. Thus, after the coil is electrified, the lens carrier can be controlled to generate axial movement from top to bottom by matching the magnetic force distribution of the magnet and to achieve the purpose of automatic focusing.

Description

Focusing drive device

Technical field

The utility model relates to a kind of technical field of mobile phone camera lens, relates in particular to a kind of lens focus drive unit that can focus automatically.

Background technology

Cellular phone is linked up for people are remote and is brought great convenience, prosperity along with science and technology, additional function constantly promotes, it not merely can pass on the communication instrument as sound, more can have functions such as take pictures, recording, walkman even image are play immediately, really be that a machine is infinite in the hand magical effect.The function of taking pictures of mobile phone has become basic outfit in recent years, continue pursuing improved is the high picture element of taking pictures that constantly promotes, but and the function of autozoom, and the mode of zoom to be controls lens make it produce axial displacement, in stressing compact handset structure now, more apparent difficulty.The serial verb construction of this camera lens part of mobile phone adopts step motor control more now, and cost is higher.

Summary of the invention

Fundamental purpose of the present utility model provides a kind of focusing drive device that applies to the camera lens in the mobile phone, is a kind of design innovation, and cost is low, and the serial verb construction of function-stable, and the designed structural volume of finishing is little, in light weight, meets the demand of mobile phone.

In order to achieve the above object, the utility model is made of a pedestal, a camera lens carrier and several Hookean spring, be provided with magnet in this pedestal with magnetic force, fix wherein for one group in twos, and camera lens carrier main body is a hollow form, promptly as the part that is provided with of lens group, enameled wire loop is being twined in the periphery to hollow position.Two groups were arranged in the pedestal about several Hookean springs divided at least, being the camera lens carrier seemingly with staggered this, hanging shape is set up in the pedestal, by the magnetic force that magnet had, behind coil electricity, can make the camera lens carrier produce axially movable strength, cooperate the rubber-like Hookean spring, so can control setting camera lens on it do up and down parallel mobile focusing action.

For being well understood to detailed process of the present utility model and technology contents, accompanying drawing below this will cooperate and detailed explanation, understand spiritual place of the present utility model in the hope of knowing:

Description of drawings

Fig. 1 is a stereographic map of the present utility model, and its internal partial member schematically shows with dotted line;

Fig. 2 is an exploded view of the present utility model;

Fig. 3 is the exploded view of camera lens carrier of the present utility model.

Wherein, description of reference numerals is as follows:

1 pedestal, 11 magnet

2 camera lens carriers, 21 coils

22 holders, 221 abutting ends

23 secondary holder 231 abutting ends

3 Hookean springs

Embodiment

As shown in Figure 1 and Figure 2, be stereographic map of the present utility model and exploded view, comprise that mainly a pedestal 1, a camera lens carrier 2 and several Hookean spring 3 constitute.

This pedestal 1 is the accommodation seat of hollow, and inner four corners are being fixed one group magnet 11 in twos.3 of several Hookean springs are divided into two groups at least, each group is provided with two Hookean springs 3 in the present embodiment, be arranged at the following position of going up of pedestal 1 inside respectively, one end is fixed in pedestal 1 place, the other end then is fixed in camera lens carrier 2 places, several Hookean springs 3 of upper-lower position are staggered distribution (as shown in Figure 1), on the one hand camera lens carrier 2 being unsettled sets up, but the support elastic that utilizes Hookean spring 3 to have slight bending makes camera lens carrier 2 become the movable piece that short distance is up and down moved on the one hand.

As Fig. 2, shown in Figure 3, this camera lens carrier 2 is made of coil 21, main holder 22, secondary holder 23, these main holder 22 main bodys are cylindric, and this coil 21 is fastened in its periphery, and its bottom size is big and be provided with two outstanding abutting ends 221 (only can see among the figure), two abutting ends 221 are the opposite direction settings of 180 degree of being separated by, with so that these Hookean spring 3 one ends can be fixed in this place.The tabular that should pair holder 23 then be hollow, periphery is provided with two outstanding abutting ends 231 in addition, both are the 180 degree modes of being separated by and are provided with, also be usefulness for these Hookean spring 3 combinations, this pair holder 23 is to bind to be fixed in main holder 22 tops when using, prevent that coil 21 from coming off on the one hand, conveniently this structure is installed on pedestal 1 place in regular turn on the one hand.Both abutting ends 231,221 are staggered mode and are provided with in addition, make several Hookean springs 3 up and down also be staggered, can make its camera lens carrier 2 thus when moving axially, and are comparatively stable and differently produce skew.And the height of camera lens carrier 2 integral body is the height greater than the magnet 11 in the pedestal 1, to guarantee movably space of camera lens carrier 2.

It during assembling the main holder 22 that will wind coil 21 earlier, below by pedestal 1 is inserted, its this structure is arranged between several magnet 11, again secondary holder 23 is binded and be fixed in main holder 22 tops, promptly finish the assembling of camera lens carrier 2, then upper-lower position and abutting end 231,221 places that several Hookean springs 3 are planted in regular turn and are fixed in pedestal 1 can make camera lens carrier 2 is hanging shape is set up in pedestal 1.

This structure is focusing drive device of the present utility model.During practice, the lens group of mobile phone is the hollow position that is arranged at camera lens carrier 2, and pedestal 1 one sides are provided with associated components such as optics sensing component in addition, when coil electricity, can controls lens move up and down focusing.

Shown in more than comprehensive, focusing drive device of the present utility model, be to utilize several Hookean springs 3 one camera lens carrier 2 to be suspended in the pedestal 1 in staggered up and down mode, make it become a movable piece, cooperate coil 21 and the fixed magnet 11 that is twined again, utilize the size of electric current and the axial displacement of direction controls lens carrier 2, so can reach controls lens and make its parallel up and down moving, provide a kind of cost low, function-stable, can apply to the focusing drive device of the camera lens of mobile phone.

The above is preferred embodiment of the present utility model only, is not the scope that is used for limiting the utility model embodiment.Be that all equalizations of being done according to the utility model claim change and modification, be all scope of the present utility model and contain.

Claims

1. focusing drive device, it comprises:

One pedestal, the inner group of magnets that is provided with all around;

One camera lens carrier is arranged at the pedestal center, and its outer periphery has coil;

Several Hookean springs are at least two groups and are arranged at the base interior upper-lower position respectively, and each Hookean spring one end is fixed in camera lens carrier place, and the other end is fixed in base interior.

2. focusing drive device as claimed in claim 1 is characterized in that the several Hookean springs that are arranged at the upper-lower position in the pedestal are staggered setting.

3. focusing drive device as claimed in claim 1 is characterized in that upper-lower position respectively is provided with two Hookean springs, is with staggered that the camera lens carrier is unsettled is set up in the pedestal with this.

4. focusing drive device as claimed in claim 1, it is characterized in that this camera lens carrier is to be made of a coil, main holder and secondary fixing institute, this major and minor holder binds the back and forms the middle narrower structure of broad about in the of, peripheral place in the middle of this coil then is wound in.

5. focusing drive device as claimed in claim 4 is characterized in that this main holder is provided with one and is main body cylindraceous, and aforesaid coil then is wound in its periphery.

6. focusing drive device as claimed in claim 4 is characterized in that this main holder bottom is provided with two outstanding abutting ends, two abutting ends, 180 degree of being separated by, and make aforesaid Hookean spring one end be fixed in this place.

7. focusing drive device as claimed in claim 4 is characterized in that this pair holder is provided with two outstanding abutting ends, and two abutting ends, 180 degree of being separated by and make aforesaid Hookean spring one end be fixed in this place.