CN206364683U

CN206364683U - A kind of voice coil motor

Info

Publication number: CN206364683U
Application number: CN201621412747.9U
Authority: CN
Inventors: 肖青
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2016-12-21
Filing date: 2016-12-21
Publication date: 2017-07-28
Anticipated expiration: 2026-12-21

Abstract

The utility model is related to a kind of voice coil motor, carrier including the housing with inner chamber, with housing cavity form fit, and the drive device that driving carrier is moved in housing cavity, the rear and front end of the carrier is arranged in the inner chamber of housing by the first shell fragment, the second shell fragment respectively；Also include the ring-type dustproof membrane being located between carrier and inner walls, the outer ledge of the dustproof membrane is connected on the inwall of housing, and the inside edge of the dustproof membrane is connected on carrier.Voice coil motor of the present utility model; the gap between carrier and housing is blocked by the dustproof membrane; then all kept off if any dust outside dustproof membrane, can thus avoid the dust in environment to enter mobile phone camera module internal completely, protect the region of module internal more sensitivity.

Description

A kind of voice coil motor

Technical field

The utility model is related to lens actuation apparatus technical field, more specifically, the utility model is related to a kind of voice coil loudspeaker voice coil horse Reach.

Background technology

Voice coil motor is a kind of device for converting electrical energy into mechanical energy, and it is mainly used in small stroke, high speed, high acceleration Degree motion, it is adaptable to which narrow space, most common application is exactly for realizing the automatic focusing function in mobile phone camera.

The existing voice coil motor being applied in mobile phone includes the carrier for fixed lens, is fastened on carrier wired Circle, the periphery of coil, which is provided with fixed support, fixed support, is fixed with magnet, and gap is left between magnet and coil；In carrier Two ends be respectively fixed with a shell fragment, setting camera lens is used to gather one end of scenery as upper end, therefore fixed holds herein on carrier Shell fragment is named as shell fragment, and the shell fragment for being fixed on the carrier other end is named as lower shell fragment, and the opposite side of upper shell fragment is fixed with pressing plate, Shell fragment and pressing plate are used for limiting the position of carrier movement.The operation principle of this voice coil motor is utilized from permanent magnet with being powered Interaction in the magnetic field that coil is produced between magnetic pole produces regular motion, and using upper shell fragment and lower shell fragment elastic force come Push-and-pull, in check electric current carry index glass head by carrier, allow camera lens now can just realize microspur towards direction motion is limited From mobile whole camera lens, change focal length, realize the purpose of sharp image.

Because carrier needs to move relative to fixed support, therefore between must being left between carrier and fixed support Gap.Industry is assembled in mobile phone at present, the dustfree environment of most of mobile phone assembly plants is not up to standard, the environment in mobile phone assembling process In dust will be from the gap into inside camera, and then be likely to enter camera imaging area, cause camera imaging It is bad.What is more is attached to the dust of surface of camera head to remove, and ionic wind snake can be used to be dried against camera, so Dust is just increased into the probability inside camera.

Utility model content

A purpose of the present utility model there is provided a kind of voice coil motor.

According to one side of the present utility model there is provided a kind of voice coil motor, including housing with inner chamber, with housing The carrier of chamber form fit, and the drive device that driving carrier is moved in housing cavity, the rear and front end point of the carrier It is not arranged on by the first shell fragment, the second shell fragment in the inner chamber of housing；

Also include the ring-type dustproof membrane being located between carrier and inner walls, the outer ledge of the dustproof membrane is connected to shell On the inwall of body, the inside edge of the dustproof membrane is connected on carrier.

Alternatively, the dustproof membrane is in wavy or accordion.

Alternatively, the dustproof membrane is in round table-like, the position that the dustproof membrane be connected with inner walls be higher than dustproof membrane and The position of carrier connection.

Alternatively, the outer ledge of the dustproof membrane is connected on the inwall of housing upper surface；The inner side of the dustproof membrane Edge is connected in the front end surface of carrier.

Alternatively, the drive device includes being wrapped in coil on carrier, and installed in housing cavity and with it is described The magnet of fitting coils.

Voice coil motor of the present utility model, is blocked the gap between carrier and housing by the dustproof membrane, if any dirt Angstrom then all kept off outside dustproof membrane, can thus avoid the dust in environment to enter mobile phone camera module internal completely, Protect the region of module internal more sensitivity.

It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model Feature and its advantage will be made apparent from.

Brief description of the drawings

The accompanying drawing for constituting a part for specification describes embodiment of the present utility model, and uses together with the description In explanation principle of the present utility model.

Fig. 1 is the explosive view of the utility model voice coil motor.

Fig. 2 is the structural representation of the utility model voice coil motor.

Fig. 3 is the structural representation of dustproof membrane in Fig. 1.

Fig. 4 is the profile for the voice coil motor that the utility model has camera lens module.

Embodiment

Various exemplary embodiments of the present utility model are described in detail now with reference to accompanying drawing.It should be noted that：Unless another Illustrate outside, the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is not limited Make scope of the present utility model.

The description only actually at least one exemplary embodiment is illustrative below, never as to this practicality New and its application or any limitation used.

It may be not discussed in detail for technology and equipment known to person of ordinary skill in the relevant, but in appropriate situation Under, the technology and equipment should be considered as a part for specification.

In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without It is as limitation.Therefore, other examples of exemplary embodiment can have different values.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.

With reference to Fig. 1, the utility model provides a kind of voice coil motor, including the housing 1 with inner chamber, carrier 5, and drives Drive device that dynamic load body 5 is moved in the inner chamber of housing 1 etc..Housing 1 of the present utility model has through the hollow interior of its two ends Chamber, can be set a pedestal 7 in the lower end of housing 1, is closed the lower ending opening of housing 1 by the pedestal 7.The phase of voice coil motor Closing part can be arranged on the pedestal 7, the device such as optical sensor.

Carrier 5 of the present utility model is used to install camera lens module 8, with reference to Fig. 4.The shape of the carrier 5 and the inner chamber of housing 1 Shape match so that carrier 5 can be installed in the inner chamber of housing 1.Wherein, the carrier 5 itself has inner chamber, described Camera lens module 8 is arranged on by mode well-known to those skilled in the art in the inner chamber of carrier 5.

In order that carrier 5 can be moved relative to housing 1, the carrier 5 is arranged on housing 1 by the structure of shell fragment Inner chamber in.Specifically, with reference to Fig. 1, Fig. 4, the front end of the carrier 5 is connected on housing 1 by the first shell fragment 4, described to carry The rear end of body 5 is connected on pedestal 7 by the second shell fragment 6.Using the mounting means of this two shell fragments up and down so that carrier 5 It " can hang " in the inner chamber of housing 1, under the driving of drive device, carrier 5 can be made to be moved relative to housing 1.

The drive device may include the coil (view is not provided) being wrapped on carrier 5, and installed in the inner chamber of housing 1 And with the magnet 2 of the fitting coils.By the cooperation of coil and magnet 2, driving is provided so as to the motion for carrier 5 Power, this belongs to the prior art of those skilled in the art, no longer illustrated herein.

Voice coil motor of the present utility model, in addition to the ring-type dustproof membrane 3 between carrier 5 and the inwall of housing 1, reference Fig. 1, Fig. 2, Fig. 3.The dustproof membrane 3 is annular in shape, and it is enclosed on the position between carrier 5 and the inwall of housing 1.Wherein, it is described dust-proof The outer ledge of film 3 is connected on the inwall of housing 1, and the inside edge of the dustproof membrane 3 is connected on carrier 5.So as to pass through The dustproof membrane 3 blocks the gap between carrier 5 and housing 1, is then all kept off if any dust outside dustproof membrane 3, thus The dust in environment can be avoided to enter mobile phone camera module internal completely, the region of module internal more sensitivity is protected.

Voice coil motor of the present utility model, in order to avoid dustproof membrane 3 brings influence, the dustproof membrane 3 on the motion of carrier 5 It is in wavy or accordion from its outer ledge to the direction of its inside edge.This, which allows for the dustproof membrane 3, has more Stretching well, deformability, it is ensured that the motion of carrier 5 is not influenceed by dustproof membrane 3 completely.

Dustproof membrane 3 of the present utility model can be a smooth film layer, and the utility model is preferably, the dustproof membrane 3 In round table-like, with reference to Fig. 3.The size of the outer ledge of dustproof membrane 3 is more than the size of its inside edge, make its in one end it is big, Small round table-like in one end, in favor of the stretching and reset of dustproof membrane 3.

When installing, what the position that the dustproof membrane 3 is connected with the inwall of housing 1 was connected higher than dustproof membrane 3 with carrier 5 Position.The outer ledge of the dustproof membrane 3 can be connected on the inwall of the upper surface of housing 1；The inside edge of the dustproof membrane 3 In the front end surface for being connected to carrier 5.Using such mounting structure so that can be from the tip position of voice coil motor by carrier Gap between housing is closed.

Although some specific embodiments of the present utility model are described in detail by example, this area It is to be understood by the skilled artisans that above example is merely to illustrate, rather than in order to limit scope of the present utility model.This Field it is to be understood by the skilled artisans that can be in the case where not departing from scope and spirit of the present utility model, to above example Modify.Scope of the present utility model is defined by the following claims.

Claims

1. a kind of voice coil motor, it is characterised in that：Carrier including the housing with inner chamber, with housing cavity form fit, with And the drive device that driving carrier is moved in housing cavity, the rear and front end of the carrier passes through the first shell fragment, second respectively Shell fragment is arranged in the inner chamber of housing；

Also include the ring-type dustproof membrane being located between carrier and inner walls, the outer ledge of the dustproof membrane is connected to housing On inwall, the inside edge of the dustproof membrane is connected on carrier.

2. voice coil motor according to claim 1, it is characterised in that：The dustproof membrane is in wavy or accordion.

3. voice coil motor according to claim 2, it is characterised in that：The dustproof membrane in round table-like, the dustproof membrane with The position of inner walls connection is higher than the position that dustproof membrane is connected with carrier.

4. voice coil motor according to claim 3, it is characterised in that：The outer ledge of the dustproof membrane is connected on housing On the inwall of end face；The inside edge of the dustproof membrane is connected in the front end surface of carrier.

5. voice coil motor according to claim 1, it is characterised in that：The drive device includes the line being wrapped on carrier Circle, and installed in housing cavity and with the magnet of the fitting coils.