CN210201690U

CN210201690U - Low-thickness voice coil motor for camera

Info

Publication number: CN210201690U
Application number: CN201921269019.0U
Authority: CN
Inventors: Ruilin Cai; 蔡锐林; Bin Li; 李斌; Deguang Xu; 许德光
Original assignee: Baotou Jiangxin Micro Motor Technology Co Ltd
Current assignee: Baotou Jiangxin Micro Motor Technology Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-03-27
Anticipated expiration: 2029-08-06

Abstract

The utility model discloses a camera is with voice coil motor of low thickness, including last casing, lower casing, go up shell fragment, carrier, coil, locating lever, locating piece, magnetite, magnetic resistance piece and conductive terminal down, be provided with two electrically conductive ends down on the casing, be provided with down the shell fragment down on the casing, the shell fragment top is provided with the coil down, the coil is around adorning in the carrier outside, the carrier top is provided with the shell fragment, it is provided with the packing ring to go up the shell fragment top, the packing ring top is provided with the casing, go up casing and lower casing constitution yoke, it is provided with the magnetite to go up four sides of casing, all be provided with the magnetic resistance piece on going up casing and the lower casing, the locating lever sets up under on the casing, the locating piece sets up four sides at the coil. The utility model discloses the structure is ultra-thin and can effectively prevent the magnetic leakage, maintains the magnetic field intensity of yoke, can prevent the coil short circuit simultaneously, and the practicality is strong.

Description

Low-thickness voice coil motor for camera

Technical Field

The utility model relates to a voice coil motor of low thickness for camera belongs to voice coil motor equipment technical field.

Background

The voice coil motor (VCM motor) is one of the components of camera modules of electronic products such as mobile phones, tablet computers and the like, and can be used for driving the lens to move along the optical axis so as to realize automatic focusing. The existing voice coil motor is generally large in size and difficult to assemble some electronic products, and due to the imaging requirement, the top and the bottom of a magnetic yoke of the voice coil motor are both provided with light through holes for light to pass through the motor. The light passing hole usually leads to serious magnetic leakage, so that the magnetic field intensity formed in the magnetic yoke is too weak, sufficient power cannot be provided for the movement of the lens, the focusing precision of the camera is influenced, the camera cannot clearly image, the coil of the existing voice coil motor is easy to be short-circuited, and the problem is solved by the existing voice coil motor with low thickness.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a voice coil motor of low thickness for camera to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a camera is with voice coil motor of low thickness, includes last casing, lower casing, goes up the shell fragment, carrier, coil, locating piece, magnetite, magnetic resistance piece and conductive terminal down, be provided with two electrically conductive ends down on the casing, be provided with down the shell fragment on the casing down, the shell fragment top is provided with the coil down, the coil is around adorning in the carrier outside, the carrier top is provided with the shell fragment, it is provided with the packing ring to go up the shell fragment top, the packing ring top is provided with the casing, go up casing and lower casing constitution yoke, it is provided with the magnetite to go up four sides of casing, upward all be provided with the magnetic resistance piece on casing and the lower casing, the locating lever sets up under on the casing, the locating piece sets up four sides at the.

Preferably, the upper shell, the gasket, the upper spring plate, the carrier, the lower spring plate, the lower shell and the magnetism blocking plate are all provided with light through holes.

Preferably, the upper spring plate, the positioning block and the lower spring plate are all provided with positioning holes, and the upper spring plate, the positioning block and the lower spring plate are limited on the positioning rod through the positioning holes.

Preferably, the upper shell is provided with a positioning groove, and the positioning rod is fixed in the positioning groove.

Preferably, the upper shell and the lower shell are both provided with a limiting block, the upper end and the lower end of the magnet are symmetrically provided with a limiting groove, and the magnet is fixed in the upper shell and the lower shell through the limiting block and the limiting groove.

Preferably, one end of the coil is connected to one of the conductive terminals of the lower housing, and the other end of the coil is connected to the other conductive terminal of the lower housing.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model relates to a camera is with voice coil motor of low thickness is ultra-thin structure, and occupation space is less, can assemble the electronic equipment of more model, and all is provided with the magnetic resistance piece on last casing and lower casing, can effectively prevent the magnetic leakage, and then reduces the magnetic leakage volume of light flux hole, maintains the magnetic field intensity in the yoke to guarantee that voice coil motor has sufficient sensitivity and power drive lens and remove along the optical axis, improve the accuracy and the imaging definition that the camera was focused, the utility model discloses simple structure, convenient operation, the practicality is strong.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1. a lower housing; 2. an upper housing; 3. an upper spring plate; 4. a lower spring plate; 5. a carrier; 6. a coil; 7. positioning a rod; 8. positioning blocks; 9. a magnet; 10. a magnetic resistance sheet; 11. a conductive terminal; 12. a gasket; 13. a light through hole; 14. positioning holes; 15. positioning a groove; 16. a limiting block; 17. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", 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.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, the present invention provides a technical solution: a low-thickness voice coil motor for a camera comprises an upper shell 2, a lower shell 1, an upper elastic sheet 3, a lower elastic sheet 4, a carrier 5, a coil 6, a positioning rod 7, a positioning block 8, a magnet 9, a magnetic resistance sheet 10 and conductive terminals 11, wherein the lower shell 1 is provided with the two conductive terminals 11, the lower shell 1 is provided with a gasket 12, the lower elastic sheet 4 is arranged above the gasket 12, the coil 6 is arranged above the lower elastic sheet 4, the coil 6 is wound on the outer side of the carrier 5, the upper elastic sheet 3 is arranged above the carrier 5, the gasket 12 is arranged above the upper elastic sheet 3, the upper shell 2 is arranged above the gasket 12, the upper shell 2 and the lower shell 1 form a magnetic yoke, the magnets 9 are arranged on four sides of the upper shell 2, the magnetic resistance sheet 10 is arranged on the upper shell 2 and the lower shell 1, the positioning rod 7 is arranged on the lower shell 1, the positioning blocks 8 are arranged on four sides of the coil 6.

Further, the upper shell 2, the gasket 12, the upper elastic sheet 3, the carrier 5, the lower elastic sheet 4, the lower shell 1 and the magnetic resistance sheet 10 are all provided with light through holes 13.

Furthermore, the upper spring plate 3, the positioning block 8 and the lower spring plate 4 are all provided with positioning holes 14, and the upper spring plate 3, the positioning block 8 and the lower spring plate 4 are limited on the positioning rod 7 through the positioning holes 14.

Furthermore, a positioning groove 15 is formed in the upper shell 2, and the positioning rod 7 is fixed in the positioning groove 15.

Furthermore, the upper shell 2 and the lower shell 1 are both provided with a limiting block 16, the upper end and the lower end of the magnet 9 are symmetrically provided with a limiting groove 17, and the magnet 9 is fixed in the upper shell 2 and the lower shell 1 through the limiting block 16 and the limiting groove 17.

Furthermore, one end of the coil 6 is connected to one of the conductive terminals 11 of the lower housing 1, and the other end of the coil 6 is connected to the other conductive terminal 11 of the lower housing 1.

The working principle is as follows: the utility model relates to a camera is with voice coil motor of low thickness, in operation, energize coil 6 through the conductive terminal 11 that sets up casing 1 bottom down, because conductive terminal 11 sets up in the casing outside, so can prevent coil 6 short circuit effectively, coil 6 produces the magnetic field after the circular telegram, the magnetic field that the magnetite 9 that sets up outside coil 6 produced interacts with the magnetic field that coil 6 produced, produce an effort that is on a parallel with the optical axis to coil 6 and carrier 5, make coil 6 and carrier 5 realize the auto focus function in the optical axis direction back-and-forth movement, the magnetic resistance piece 10 that sets up in upper casing 2 and lower casing 1 can effectively place logical unthreaded hole 13 department magnetic quantity and leak, and then reduce the magnetic leakage quantity of logical unthreaded hole 13, maintain the magnetic field intensity in the yoke, in order to guarantee that voice coil motor has sufficient sensitivity and power drive carrier 5 and move along the optical axis, the focusing accuracy and imaging definition of the camera are improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a voice coil motor of low thickness for camera which characterized in that: comprises an upper shell (2), a lower shell (1), an upper elastic sheet (3), a lower elastic sheet (4), a carrier (5), a coil (6), a positioning rod (7), a positioning block (8), a magnet (9), a magnetic resistance sheet (10) and conductive terminals (11), wherein the lower shell (1) is provided with two conductive terminals (11), the lower shell (1) is provided with a gasket (12), the lower elastic sheet (4) is arranged above the gasket (12), the coil (6) is arranged above the lower elastic sheet (4), the coil (6) is wound on the outer side of the carrier (5), the upper elastic sheet (3) is arranged above the carrier (5), the gasket (12) is arranged above the upper elastic sheet (3), the upper shell (2) is arranged above the gasket (12), the upper shell (2) and the lower shell (1) form a magnet yoke, the magnets (9) are arranged on four sides of the upper shell (2), the magnetic resistance sheets (10) are arranged on the upper shell (2) and the lower shell (1), the positioning rods (7) are arranged on the lower shell (1), and the positioning blocks (8) are arranged on four sides of the coil (6).

2. A low-thickness voice coil motor for a camera according to claim 1, wherein: the upper shell (2), the gasket (12), the upper elastic sheet (3), the carrier (5), the lower elastic sheet (4), the lower shell (1) and the magnetic resistance sheet (10) are all provided with light through holes (13).

3. A low-thickness voice coil motor for a camera according to claim 1, wherein: the upper elastic sheet (3), the positioning block (8) and the lower elastic sheet (4) are respectively provided with a positioning hole (14), and the upper elastic sheet (3), the positioning block (8) and the lower elastic sheet (4) are limited on the positioning rod (7) through the positioning holes (14).

4. A low-thickness voice coil motor for a camera according to claim 1, wherein: a positioning groove (15) is formed in the upper shell (2), and the positioning rod (7) is fixed in the positioning groove (15).

5. A low-thickness voice coil motor for a camera according to claim 1, wherein: the magnet assembly is characterized in that limiting blocks (16) are arranged on the upper shell (2) and the lower shell (1), limiting grooves (17) are symmetrically formed in the upper end and the lower end of the magnet (9), and the magnet (9) is fixed in the upper shell (2) and the lower shell (1) through the limiting blocks (16) and the limiting grooves (17).

6. A low-thickness voice coil motor for a camera according to claim 1, wherein: one end of the coil (6) is connected to one conductive terminal (11) of the lower shell (1), and the other end of the coil (6) is connected to the other conductive terminal (11) of the lower shell (1).