CN201118908Y

CN201118908Y - Voice coil motor and its spring slice

Info

Publication number: CN201118908Y
Application number: CNU2007201941188U
Authority: CN
Inventors: 唐兆槐
Original assignee: Asia Optical Co Inc
Current assignee: Asia Optical Co Inc
Priority date: 2007-11-01
Filing date: 2007-11-01
Publication date: 2008-09-17
Anticipated expiration: 2017-11-01

Abstract

The utility model relates to a voice coil motor and shrapnel of the voice coil motor. The voice coil comprises upper shrapnel, lower shrapnel and a carrier positioned between the two pieces of shrapnel, the lower shrapnel comprises a first shrapnel part and a second shrapnel part, wherein, the lower shrapnel is all in one, and a reserved cutting part is arranged at the connecting position of the first shrapnel part and the second shrapnel part. Because the lower shrapnel of the voice coil motor is all in one, after the lower shrapnel is fixed on the carrier and then divided into two parts along the reserved cutting part, the two parts are not required to be manufactured and assembled respectively, and therefore the production efficiency is improved; simultaneously, the two parts of the lower shrapnel are ensured to be positioned accurately and not easy to be out of shape, and therefore the quality of the voice coil motor is improved.

Description

Voice coil motor and shell fragment thereof

Technical field

The utility model relates to motor, more particularly, relates to a kind of voice coil motor and shell fragment thereof.

Background technology

Along with the raising of camera cell phone pixel, more and more higher requirement has been proposed also for the automatic focus function of this mobile phone.The circuit area of taking is little, the reliability advantages of higher because voice coil motor (Voice Coil Motor is called for short VCM) has, and is adopted by many manufacturers.As shown in Figure 1, existing voice coil motor comprises pedestal (not shown), last shell fragment (not shown), following shell fragment 1 and the carrier between two shell fragments 2.Carrier 2 centers are provided with screw 3, are used for fixing camera lens, and are set with coil 4 on the outer peripheral face of carrier 2.

Following shell fragment 1 comprises separate two parts, i.e. the first shell fragment part 5 and the second shell fragment part 6, and both are connected with the both positive and negative polarity of power supply respectively, and link to each other with coil 4.After energized, interact between coil 4 and the corresponding magnetite, make carrier 2 with respect to base motion, thereby drive camera motion, reach the purpose of focusing.The defective of this structure is that during assembling, the first shell fragment part 5 of following shell fragment 1 needs to be connected with pedestal respectively and to be located with the second shell fragment part 6, links to each other with the both positive and negative polarity of power supply respectively again.Because these two parts need be made respectively and assemble, and cause production efficiency lower, when assembling, can cause higher fraction defective.

The utility model content

The technical problems to be solved in the utility model is, need make respectively and assembling, the higher defective of fraction defective at the following shell fragment of voice coil motor in the prior art, and a kind of voice coil motor and shell fragment thereof are provided, and can guarantee assembly precision and enhances productivity.

The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of voice coil motor, comprise shell fragment, following shell fragment and the carrier between two shell fragments, described shell fragment down comprises first shell fragment part and the second shell fragment part, wherein, described shell fragment down is an integral type, and is provided with the cut-out portion that reserves in the junction of described first shell fragment part and second shell fragment part.

In voice coil motor described in the utility model, described carrier base, with described reservation cut-out portion corresponding position, be provided with recess.

In voice coil motor described in the utility model, described carrier top is cylindric, and the bottom is provided with the carrier seat; On the outer peripheral face of described carrier, be arranged with coil, described coil is seated on the described carrier seat.

In voice coil motor described in the utility model, described first shell fragment part and second shell fragment partly include binding post separately, are used for linking to each other with the positive and negative level of power supply; And described first shell fragment part is connected with described coil respectively with second shell fragment part.

The utility model also provides a kind of shell fragment of voice coil motor, comprises first shell fragment part and the second shell fragment part, it is characterized in that described shell fragment is an integral type, and is provided with the cut-out portion that reserves in the junction of described first shell fragment part and second shell fragment part.

Implement voice coil motor of the present utility model and shell fragment thereof, has following beneficial effect:, after fixing, will descend shell fragment to be divided into two parts along reserving cut-out portion again with carrier because the following shell fragment of voice coil motor is an integral type, need not to make respectively and assemble, improved production efficiency.Simultaneously, make down two parts accurate positioning of shell fragment, not yielding, improved the quality of voice coil motor.

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 existing voice coil motor;

Fig. 2 is the decomposing schematic representation of voice coil motor of the present utility model;

Fig. 3 is inverted voice coil motor, the schematic diagram that utilizes the anchor clamps cutter head that following shell fragment is cut off;

Fig. 4 is placed on voice coil motor on the anchor clamps microscope carrier, to the schematic diagram that descends shell fragment to cut off;

Fig. 5 is the schematic diagram before the following shell fragment of voice coil motor is cut off by the anchor clamps cutter head;

Fig. 6 is the schematic diagram after the following shell fragment of voice coil motor is cut off by the anchor clamps cutter head.

Embodiment

In the utility model,, only show the part assembly of voice coil motor for for purpose of brevity.As shown in Figures 2 and 3, voice coil motor 100 comprises pedestal (not shown), last shell fragment (not shown), following shell fragment 101 and the carrier between two shell fragments 102.The top of carrier 102 is cylindric, is provided with centre bore 103, and the bottom is provided with carrier seat 104.The shape of centre bore 103 is suitable with corresponding lens shape, and has internal thread, and camera lens can be fixed in the centre bore 103 by modes such as threaded engagement.Carrier 102 is slidably disposed in the pedestal, for example, the mode that matches with chute by projection, the perhaps mode that matches with guide hole by guide rod, can slide with respect to pedestal when being activated, thereby drive the camera lens rectilinear motion, change the distance between camera lens and the photo-sensitive cell, reach the purpose of focusing.

On the outer peripheral face of carrier 102, be arranged with coil 105.Coil 105 is processed into the outer peripheral face shape adapting with carrier 102 tops behind spiral, be seated in after the assembling on the carrier seat 104, on coil 105, is provided with spacer ring 111.Following shell fragment 101 is arranged between carrier seat 104 and the pedestal.On upper and lower shell fragment, be provided with the hole corresponding with the centre bore 103 of carrier 102, avoid camera lens is caused interference.These two shell fragments are used to provide elastic force, impel carrier 102 playback.

For ease of making and assembling, following shell fragment 101 is an integral type, comprises the first shell fragment part 107 and the second shell fragment part 108, and is provided with two places reservation cut-out portion 106 in this two-part junction.The first shell fragment part 107 and the second shell fragment part 108 include binding post separately, be used for linking to each other with the positive and negative level of power supply, and these two parts are connected with the lead of coil 105 respectively.After energized, coil 105 interacts with the interior corresponding magnetite of pedestal, thereby generation power promotes carrier 102 and slides in pedestal, and this moment drives coil 105 and camera lens moves together, realizes focusing.Control gets final product the distance that controls lens moves by the electric current power of coil 105.

As shown in Figure 3 and Figure 4, following shell fragment 101 is provided with a plurality of location holes 109, in carrier 102 bottoms, is provided with corresponding reference column 110.Location hole 109 cooperates with reference column 110, can be in when assembling assist location.As Fig. 3 and shown in Figure 5, in carrier 102 bottoms, with reserve cut-out portion 106 corresponding positions, be provided with recess 112, when being used under cutting shell fragment 101, make down shell fragment 101 that the space of distortion be arranged, avoid carrier 102 is damaged.At following shell fragment 101 each contact point point glue with carrier seat 104, behind both gummeds, can utilize anchor clamps cutter head 200 to carry out cutting and separating from reserving cut-out portion 106, following shell fragment 101 is divided into two independent parts.

Shown in Fig. 4-6, during cut-out, portion's product inversion that these assemble in the voice coil motor 100 is fixed on the anchor clamps microscope carrier 300, make down shell fragment 101 up.Anchor clamps cutter head 200 moves downward under actuating forces such as cylinder, until descending the reservation cut-out portion 106 on the shell fragment 101 to cut off, with two parts separation of shell fragment 101 down.Afterwards, anchor clamps cutter head 200 leaves.Be cut off the recess 112 of place and produce plastic deformation, can not restore to the original state to carrier 102 bottoms.Therefore, the situation of short circuit can not appear in the adjacent each interval of the first shell fragment part 107 and the second shell fragment part 108.

In the utility model, because the following shell fragment 101 of voice coil motor 100 is an integral type, after fixing, will descend shell fragment 101 to be divided into two parts along reserving cut-out portion 106 again with carrier 102, need not to make respectively and assemble, improved production efficiency.Simultaneously, make down two parts accurate positioning of shell fragment 101, not yielding, improved the quality of voice coil motor 100.

Claims

1, a kind of voice coil motor, comprise shell fragment, following shell fragment and the carrier between two shell fragments, described shell fragment down comprises first shell fragment part and the second shell fragment part, it is characterized in that, described shell fragment down is an integral type, and is provided with the cut-out portion that reserves in the junction of described first shell fragment part and second shell fragment part.

2, voice coil motor according to claim 1 is characterized in that, described carrier base, with described reservation cut-out portion corresponding position, be provided with recess.

3, voice coil motor according to claim 1 is characterized in that, described carrier top is cylindric, and the bottom is provided with the carrier seat; On the outer peripheral face of described carrier, be arranged with coil, described coil is seated on the described carrier seat.

4, voice coil motor according to claim 3 is characterized in that, described first shell fragment part and second shell fragment partly include binding post separately, is used for linking to each other with the positive and negative level of power supply; And described first shell fragment part is connected with described coil respectively with second shell fragment part.

5, a kind of shell fragment of voice coil motor comprises first shell fragment part and the second shell fragment part, it is characterized in that described shell fragment is an integral type, and is provided with the cut-out portion that reserves in the junction of described first shell fragment part and second shell fragment part.