CN210166551U

CN210166551U - Dustproof antitorque auto focus voice coil motor

Info

Publication number: CN210166551U
Application number: CN201921108725.7U
Authority: CN
Inventors: 邵柏芝; 卢煌杰; 刘雨
Original assignee: GUI XIN MAGNETOELECTRIC HI-TECH Co Ltd
Current assignee: GUI XIN MAGNETOELECTRIC HI-TECH Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-03-20
Anticipated expiration: 2029-07-15

Abstract

The utility model discloses a dustproof antitorque auto focus voice coil motor, including last gasket, the integrative piece of coil carrier of terminal base and plastic material is provided with lug or sand grip on the integrative piece of coil carrier, go up the strip that all is provided with the plastic material on gasket and the terminal base, column or protruding thing are used for constituting the antitorque structure of the integrative piece of coil carrier. By changing the existing anti-torsion structure, the metal blade on the shell is eliminated, and then the anti-torsion structure of the voice coil motor is formed by matching the plastic strips arranged on the upper gasket and the terminal base with the anti-torsion convex block and the anti-torsion convex strip on the integrated piece of the coil carrier. Through changing the striking between original metal blade and the carrier, avoided the plastic dust granule that produces because of the striking to the influence that the image quality produced, reduced the wearing and tearing of carrier itself, prolonged life.

Description

Dustproof antitorque auto focus voice coil motor

Technical Field

The utility model relates to a linear drive arrangement field of camera module camera lens especially relates to a dustproof antitorque auto focus voice coil motor.

Background

The mobile phone has evolved from a function phone to a smart phone, and thus the camera module carried by the mobile phone has also evolved from fixed focus to an auto focus function. From the increasing popularity of high-Pixel camera modules such as 5 Mega Pixel, 8 Mega Pixel and 13 Mega Pixel, the camera function and the photographing function of mobile phones are more and more powerful, and the requirement on a linear driving device of a lens for realizing the automatic focusing function of the camera module is also more and more high.

The structure of a similar linear driving device adopted in the existing miniature camera at home and abroad is more generally an anti-collision anti-torsion structure, and a metal blade on a shell is bent and inserted into an anti-torsion groove on a carrier to resist torsion with the carrier. The purpose of the torsion resistance is to protect the spring and other internal structures from damage during attachment of the lens and carrier.

The anti-torsion mode causes that the blade and the carrier can mutually impact in the using process, and the blade side edge can impact the side face of the carrier to cause the plastic carrier to fall scraps to generate dust, so that the image quality is influenced.

Disclosure of Invention

Problem to prior art existence, the utility model aims to provide a dustproof antitorque auto focus voice coil motor can effectively avoid the production of dust when using, improves the image quality.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the utility model provides a dustproof antitorque auto focus voice coil motor, includes the integrative piece of coil carrier of gasket, terminal base and plastic material, is provided with lug or sand grip on the integrative piece of coil carrier, all be provided with the strip of plastic material on going up the integrative piece of gasket and terminal base, column or protruding thing are used for constituting the antitorque structure of the integrative piece of coil carrier.

Further, the top surface of the integrated coil carrier piece is provided with an anti-torsion bump, and the anti-torsion bump is matched with an anti-torsion structure on the upper gasket to prevent the integrated coil carrier piece from twisting.

Further, the torsion resistant structure is circumferentially disposed on an inner sidewall of the upper gasket.

Further, the side of the integrated coil carrier piece is provided with an anti-torsion protruding strip, and the anti-torsion protruding strip is matched with an anti-torsion structure on the terminal base to prevent the integrated coil carrier piece from twisting.

Further, the torsion resistant structure is circumferentially disposed on a top surface on the terminal base.

Further, the torsion-resistant structure is a plastic strip parallel to the outer edge of the upper gasket and the outer edge of the terminal base.

Further, the anti-torsion bump and the anti-torsion convex strip are integrally formed with the coil carrier.

The utility model discloses a change current antitorque structure, cancelled the metal blade on the shell, and then through the plastic strip that sets up on last gasket and terminal base to cooperate with antitorque lug and the antitorque sand grip of plastic material on the integrative piece of coil carrier, constitute voice coil motor's antitorque structure.

Through changing the striking between original metal blade and the carrier, avoided the plastic dust granule that produces because of the striking to the influence that the image quality produced, reduced the wearing and tearing of carrier itself, prolonged life.

Drawings

FIG. 1 is a schematic diagram of a housing structure of a voice coil motor in the prior art;

FIG. 2 is a schematic diagram of a prior art coil carrier integrated piece for a voice coil motor;

FIG. 3 is a schematic illustration of the installation of a prior art anti-torque structure;

fig. 4 is a schematic structural diagram of a voice coil motor according to the present invention;

fig. 5 is an installation schematic diagram of the torsion-resistant structure of the present invention.

Detailed Description

In the description of the present embodiment, the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as specifically indicating or implying relative importance.

To clearly illustrate the design concept of the present invention, the following description is made with reference to the examples.

The utility model provides a dustproof antitorque auto focus voice coil motor, includes the integrative piece of coil carrier of gasket, terminal base and plastic material, installs lug or sand grip on the integrative piece of coil carrier, all be provided with the strip of plastic material on going up gasket and the terminal base, column or protruding thing are used for constituting the antitorque structure of the integrative piece of coil carrier.

Through the antitorque structure who adopts the plastic material, convert the form of original blade and the integrative piece line contact of coil carrier into the face contact form, and the antitorque structure of the same plastic material can avoid the metal blade to the striking of the integrative piece of plastic coil carrier, has effectively reduced the production of plastic dust granule, has greatly improved image quality.

In order to clarify the technical solution of the present invention, the following description is made in the form of specific embodiments.

Examples

Referring to fig. 4-5, the dustproof and anti-torsion auto-focusing voice coil motor of the present embodiment includes a housing 1, an upper spacer 2, an upper spring 3, a permanent magnet 4, a coil carrier integrated member 5, a lower spring 6 and a terminal base 7. The integrated coil carrier piece 5 is mounted between the upper gasket 2 and the terminal base 7, specifically, the upper spring 3 is mounted between the upper gasket 2 and the integrated coil carrier piece 5, the permanent magnet 4 is accommodated in the inner side of the housing 1, and the lower spring 6 is mounted between the integrated coil carrier piece 5 and the terminal base 7.

In the prior art, the anti-torsion structure of the voice coil motor is completed by bending the metal blade 1-1 on the housing 1 and then inserting the bent metal blade into the anti-torsion slot 5-1 on the integrated coil carrier 5, when the mobile phone is applied, if the mobile phone shakes or falls, the integrated coil carrier 5 will generate corresponding actions, at this time, the metal blade 1-1 will collide with the integrated coil carrier 5, under a hard mechanical impact, the metal blade 1-1 will inevitably collide with the side surface of the integrated coil carrier 5, so that the integrated coil carrier 5 made of plastic material will fall off, and dust will be generated to affect the image quality, and the anti-torsion structure of the part is shown in fig. 1-3.

Referring to fig. 5, in the present invention, the metal blade structure on the housing is eliminated, and 4 anti-torsion bumps 5-2 are circumferentially arranged on the top surface of the coil carrier integrated piece 5 at intervals; the lower part of the side surface of the integrated coil carrier piece 5 is provided with 4 anti-torsion convex strips 5-3, and the anti-torsion convex blocks 5-2, the anti-torsion convex strips 5-3 and the integrated coil carrier piece 5 are integrally formed. 4 upper gasket plastic strips 2-1 matched with the anti-torsion bumps 5-2 are circumferentially arranged on the inner side wall of the upper gasket 2; 4 base plastic strips 7-1 matched with the anti-torsion convex strips 5-3 are circumferentially arranged on the top surface of the terminal base 7. Specifically, the outer side surface of the anti-torsion bump 5-2 is flush with the outer side surface of the coil carrier integrated piece 5, the outer side surface of the anti-torsion bump 5-2 is parallel to the inner side surface of the upper gasket plastic strip 2-1, the outer side surface of the anti-torsion convex strip 5-3 is parallel to the inner side surface of the base plastic strip 7-1 on the terminal base 7, and the plastic strips form an integral anti-torsion structure for the coil carrier integrated piece 5 through the limit of the anti-torsion bump 5-2 and the anti-torsion convex strip 5-3. In practical application, even if the integrated coil carrier piece 5 is twisted, the inner side surface of the plastic strip limits the side surfaces of the anti-torsion convex blocks 5-2 and the anti-torsion convex strips 5-3, so that the side surface plane of the plastic strip collides with the side surface planes of the anti-torsion convex blocks 5-2 and the anti-torsion convex strips 5-3, a good anti-torsion effect is achieved on the integrated coil carrier piece 5, meanwhile, the soft plastic material can play an obvious buffering role, and the voice coil motor can be ensured to maintain stable quality under the attached requirements of high precision and high stability; more importantly, in the anti-torsion structure, the plane contact of the same plastic material has changed the rigid collision of original metal blade to the integrative piece of coil carrier of plastic material, can not produce the dust granule, will influence the risk of formation of image quality and fall to minimumly.

In the normal installation process, a gap of 0.1mm is kept between the anti-torsion lug 5-2 and the anti-torsion convex strip 5-3 of the integrated coil carrier piece 5 and the upper gasket plastic strip 2-1 and the base plastic strip 7-1 respectively. When the coil carrier integrated piece 5 is subjected to torsional displacement, the anti-torsion bump 5-2 and the anti-torsion raised line 5-3 collide with the plastic strip, and the coil carrier integrated piece 5 can be effectively buffered in the collision process due to the fact that the plastic strip is made of the same soft material, plastic particles cannot be generated, and the dustproof and anti-torsion effect is achieved.

It is emphasised that, the utility model discloses a plane between the plastic part of the same material, fundamentally has prevented the plastic granule that the integrative piece of coil carrier produced when mechanical striking, has effectively improved voice coil motor's precision and stability. According to the utility model discloses a design concept, all adopt the plastic part of the same material, perhaps through the dustproof antitorque structure who constitutes the voice coil motor between two planes, all should the utility model discloses a within the protection scope.

It should be noted that the anti-torque ribs and the anti-torque protrusions in the above embodiments can also be exchanged, the anti-torque ribs are disposed on the top surface of the integrated coil carrier, and two symmetrical anti-torque protrusions are disposed on each side surface of the integrated coil carrier; except that plastic strips are arranged on the upper gasket and the terminal base, plastic columns or protrusions parallel to the outer edges of the upper gasket and the terminal base can be arranged, and the anti-torsion requirement on the integrated coil carrier piece is met.

Finally, it is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as the protection scope of the invention.

Claims

1. The utility model provides a dustproof antitorque auto focus voice coil motor, its characterized in that includes the integrative piece of coil carrier of gasket, terminal base and plastic material, is provided with lug or sand grip on the integrative piece of coil carrier, all be provided with the strip of plastic material, column or protruding thing on going up gasket and the terminal base, be used for constituting the antitorque structure of the integrative piece of coil carrier.

2. The auto-focus voice coil motor of claim 1, wherein a top surface of the unitary coil carrier body is provided with anti-twist bumps that cooperate with anti-twist structures on the upper spacer to prevent twisting of the unitary coil carrier body.

3. The autofocus voice coil motor of claim 2, wherein the anti-torsion feature is circumferentially disposed on an inner sidewall of the upper spacer.

4. The auto-focus voice coil motor of claim 1, wherein the coil carrier body is provided with anti-torsion ribs on its sides, the anti-torsion ribs cooperating with anti-torsion structures on the terminal base to prevent twisting of the coil carrier body.

5. The autofocus voice coil motor of claim 4, wherein the anti-torsion structure is circumferentially disposed on a top surface on the terminal base.

6. The auto-focus voice coil motor of claim 3 or 5, wherein the anti-torsion structure is a plastic strip parallel to the outer edge of the upper spacer and the outer edge of the terminal base.

7. The auto-focus voice coil motor of claim 2, wherein the anti-torque tabs and anti-torque ribs are integrally formed with the coil carrier as a single piece.