CN212647123U

CN212647123U - Automatic voice coil motor that zooms of cloud platform

Info

Publication number: CN212647123U
Application number: CN202021229421.9U
Authority: CN
Inventors: 吴兴旺; 吴发权
Original assignee: Liaoning Zhonglan Photoelectric Technology Co Ltd
Current assignee: Liaoning Zhonglan Photoelectric Technology Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-03-02
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses an automatic voice coil motor that zooms of cloud platform, include: the device comprises a lens, a light-blocking paste, an iron shell, a spring plate, a carrier, a module, a cover plate, a driving magnet and a base; the driving magnet is bonded in the inner wall of the iron shell; the cover plate is fixed on the base; the module is fixed with the lower end face of the carrier; the elastic sheet and the carrier are riveted and fixed together; riveting the outer frame of the elastic sheet on the base; bonding the iron shell and the base together; one side of the light-isolating paste is adhered to the lens, and the other side of the light-isolating paste is adhered to the iron shell; after the carrier is electrified, electromagnetic force along the direction of the optical axis is generated under the action of a magnetic field of the driving magnet, and the photosensitive chip on the module is pushed to a required position through balance between the electromagnetic force and reverse elastic force provided by the flexible circuit board and the elastic sheet on the module, so that focusing in a shooting function is realized. The utility model discloses a design structure of active optical chip for whole equipment technology is more convenient, and whole camera module is very thin, realizes the auto focus function of leading camera of cell-phone.

Description

Automatic voice coil motor that zooms of cloud platform

Technical Field

The invention relates to the technical field of voice coil motors, in particular to a voice coil motor for automatic focusing of a mobile phone camera holder.

Background

Because a Voice Coil Motor (VCM) has the advantages of simple structure, small size, low energy consumption, no noise, high acceleration, fast response speed, accurate displacement, low price and the like, the automatic focusing function of the Voice Coil Motor is still the scheme with the highest cost performance for the automatic focusing device of the camera at present. According to the traditional voice coil motor, an optical lens is fixed on a voice coil motor carrier, the carrier serves as a power unit for lens movement, the voice coil motor carrier is connected with a stator through a reed, and after the motor is electrified, the carrier linearly moves along the optical axis direction of the lens, so that the automatic focusing function is realized.

Traditional voice coil motor is because the scheme that adopts movable carrier and camera lens, realize clear formation of image through the position of adjustment camera lens, this scheme though can realize the function of auto focus, because adopt the mode of moving the camera lens to realize focusing, motor direction of height just receives the restriction, can't accomplish very thin, and along with the restriction in the aspect of the cell-phone thickness and market to the needs of leading camera auto heterodyne zoom function, how to solve under the unchangeable prerequisite of cell-phone thickness, how to break traditional mode of moving the camera lens has just become the problem that an urgent need be solved.

Disclosure of Invention

In order to solve the limitation of the thickness of the traditional voice coil motor, the invention breaks through the traditional mode of moving a lens, adopts the scheme of moving an imaging module, bonds the imaging module on a carrier winding wire, generates electromagnetic force along the optical axis direction under the action of a magnetic field of a driving magnet after the carrier winding wire is electrified, pushes a photosensitive chip on the module to a required position through the balance of the electromagnetic force and reverse elastic force provided by a flexible circuit board and an elastic sheet on the module, and realizes focusing in the shooting function in a small space.

The technical scheme adopted for realizing the purpose of the invention is as follows:

a pan/tilt/zoom voice coil motor comprising: the device comprises a lens, a light-blocking paste, an iron shell, a spring plate, a carrier, a module, a cover plate, a driving magnet and a base; the driving magnet is bonded in the inner wall of the iron shell; the cover plate is fixed on the base; the module is fixed with the lower end face of the carrier; the elastic sheet and the carrier are riveted and fixed together; riveting the outer frame of the elastic sheet on the base; bonding the iron shell and the base together; one side of the light-isolating paste is adhered to the lens, and the other side of the light-isolating paste is adhered to the iron shell; after the carrier is electrified, electromagnetic force along the optical axis direction is generated under the action of a magnetic field of the driving magnet, and the photosensitive chip on the module is pushed to a required position through balance between the electromagnetic force and reverse elastic force provided by the flexible circuit board and the elastic sheet on the module.

The utility model has the advantages that:

the utility model adopts the scheme of the dynamic imaging module, and the motion space required by the distance from the dynamic imaging surface to the lens is smaller than that of the dynamic lens, so that the whole camera module can be made very thin, and the automatic focusing of the front camera of the mobile phone can be realized; meanwhile, due to the scheme of the movable module, more light can be received on the photosensitive chip of the module, the purpose of high pixel of the front camera is achieved, and the situation that the traditional front camera cannot achieve focusing is broken through.

Drawings

Fig. 1 is an exploded view of an automatic zooming voice coil motor of a pan/tilt head according to the present invention.

Fig. 2 is a schematic diagram of the upper half of an automatic zooming voice coil motor of a pan/tilt head according to the present invention.

Fig. 3 is a schematic diagram of the lower half part of an automatic zooming voice coil motor of a pan-tilt head according to the present invention.

Fig. 4 is a schematic diagram of a finished product of a pan-tilt automatic zooming voice coil motor according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the figures 1-4.

As shown in fig. 1: a pan/tilt/zoom voice coil motor comprising: the lens comprises a lens 1, a light-blocking sticker 2, an iron shell 3, an elastic sheet 4, a carrier winding 5, a module 6, a cover plate 7, a driving magnet 8 and a base 9.

As shown in fig. 2: the utility model provides a cloud platform auto zoom voice coil motor upper half, includes: an iron case 3, a drive magnet 8; the iron shell 3 is made of a magnetic conductive material; on the optical axis of the lens 1, the inner side of the upper surface of the lens 1 contains a light path through hole 10, and a driving magnet 8 is bonded on the inner side of an iron shell 3 through glue to provide a stable magnetic field for a driving coil 16; and a step-shaped structure is reserved on the outer side wall of the iron shell 3 and used for protecting the flexible circuit board 18 on the module 6.

As shown in fig. 3: the utility model provides a cloud platform auto zoom voice coil motor the latter half, includes: the spring plate 4, the carrier winding 5, the module 6, the cover plate 7, the driving magnet 8 and the base 9. The driving coil 16 is wound on one winding post 17 of the carrier 5 to serve as a starting wire, is wound on the coil side limiting boss 20 through a wire slot, and returns to the other winding post 17 to serve as a finishing wire after the other side limiting boss 20 is wound; bonding the module 6 in the groove at the bottom of the carrier 5; the cover plate 7 is bonded in the limiting groove of the base 9 and used for sealing and light isolation;

the elastic sheet 4 is assembled on a carrier positioning column 14 of the carrier winding 5 and is riveted and fixed; assembling the outer frame of the elastic sheet 4 on a base positioning column 14 of the base 9, and welding a bonding pad 13 of the elastic sheet 4 and a coil on the winding column 14 together after riveting and fixing; welding the elastic sheet 4 and the built-in metal terminal 19 of the base 9 together, wherein at the moment, current passes through the metal terminal 19 in the base 9, the elastic sheet 4, the winding post 17 on the carrier 5, the driving coil 16, the elastic sheet 4 at the other side and the metal terminal 19 at the other side to form a complete loop; after power is supplied to the metal terminal 19, the driving coil 16 moves up and down due to electromagnetic force under the magnetic field generated by the driving magnet 8, and meanwhile, the elastic sheet 4 and the flexible circuit board 18 on the module 6 provide reverse elastic force, and finally the carrier 5 stops at the required focusing position due to the balance of the electromagnetic force, the self gravity and the elastic force, so that the focusing function is realized.

As shown in fig. 4: and finally, assembling the upper part and the lower part together, and finally adhering the lens 1 and the light-isolating paste 2 on the upper surface of the iron shell 3 to form the automatic zooming voice coil motor of the holder.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a cloud platform auto zoom voice coil motor which characterized in that:

the method comprises the following steps: the device comprises a lens (1), a light-blocking sticker (2), an iron shell (3), an elastic sheet (4), a carrier (5), a module (6), a cover plate (7), a driving magnet (8) and a base (9);

the driving magnet (8) is bonded in the inner wall of the iron shell (3);

the cover plate (7) is fixed on the base (9);

the module (6) is fixed with the lower end face of the carrier (5); the elastic sheet (4) is riveted and fixed with the carrier (5); riveting the outer frame of the elastic sheet (4) on the base (9); bonding the iron shell (3) and the base (9) together; one side of the light-isolating paste (2) is adhered to the lens (1), and the other side of the light-isolating paste is adhered to the iron shell (3); after the carrier (5) is electrified, electromagnetic force along the optical axis direction is generated under the action of a magnetic field of the driving magnet (8), and the photosensitive chip on the module (6) is pushed to a required position through balance between the electromagnetic force and reverse elastic force provided by the flexible circuit board and the elastic sheet (4) on the module (6).

2. A pan/tilt/zoom voice coil motor according to claim 1, wherein:

the iron shell (3) is made of magnetic materials, the iron shell (3) used for protecting the module (6) soft board is arranged on the side surface, and the iron shell used for protecting the module (6) and the iron shell (3) used for protecting the internal driving structure are integrally punched and are in a step shape; the upper surface is provided with a light through hole.

3. A pan/tilt/zoom voice coil motor according to claim 1, wherein:

a through hole for passing through the light path is reserved in the middle of the carrier (5); winding wires are uniformly wound on winding bosses on the two sides of the carrier (5) in a side winding mode; the upper surface of the carrier (5) is provided with a riveting column for fixing the elastic sheet (4); the lower half part is provided with a limit groove for limiting, fixing and bonding the module (6); the upper, lower and side surfaces of the carrier (5) are provided with limit bosses for limiting.

4. A pan/tilt/zoom voice coil motor according to claim 1, wherein:

the base (9) adopts an injection molding structure, a metal terminal is embedded in the base, the metal terminal extends out from one side of the base (9) and is used for supplying power to the carrier (5), and current passes through the metal terminal in the base (9), the elastic sheet (4) at one side, the winding post on the carrier (5), the driving coil, the elastic sheet (4) at the other side and the metal terminal at the other side to form a complete loop; the bottom of the base (9) is provided with a limiting groove for limiting the bonding cover plate (7); the bosses are pulled up at the four corners, and positioning columns for riveting and fixing the elastic sheets (4) are arranged at the tops of the bosses; a section of platform is pulled out of the side surface of the base (9) and used for protecting the module (6);

the carrier (5) can generate upward force after being electrified, and the upward force is balanced with the elastic force provided by the elastic sheet (4), the flexible circuit board in the module (6) and the gravity of the flexible circuit board, so that the purpose of accurate positioning is achieved.