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Motor, camera module and mobile terminal

A technology of motors and actuators, applied in electric components, machines/engines, and mechanisms that generate mechanical power, etc., can solve problems such as affecting the appearance of camera modules and mobile terminals, affecting product yield, etc.

Active Publication Date: 2021-04-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the shape memory alloy motor is powered off, the shape memory alloy wire is loose when the power is off, and the position and attitude of the motor mover are relatively free, which will change with the change of the direction of gravity, resulting in a large deviation between the center of the mover and the center of the motor stator. like figure 1 As shown, there is a large deviation between the central axis A1 of the mover 10a and the central axis A2 of the stator 20a, that is, eccentricity, which affects the appearance of the camera module and mobile terminal, and affects the product yield.

Method used

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  • Motor, camera module and mobile terminal
  • Motor, camera module and mobile terminal
  • Motor, camera module and mobile terminal

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Experimental program
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no. 1 approach

[0051] see figure 2 , is a structural block diagram of the mobile terminal provided in the first embodiment of the present application. The mobile terminal 200 includes a camera module 100 , a processor 201 , a communication bus 203 , at least one communication interface 205 and a memory 206 . The processor 201 is communicatively connected with the camera module 100 , the at least one communication interface 205 , and the memory 206 through a communication bus 203 . The mobile terminal 100 may be any of a variety of different types of consumer electronic devices that can be easily held in the user's hand during normal use. Specifically, the mobile terminal 100 may be equipped with a camera module 100 Electronic devices such as smart phones, smart watches, tablet computers, personal digital assistants (personal digital assistant, PDA), notebook computers, etc.

[0052] The processor 201 may be a central processing unit (Central Processing Unit, CPU), and may also be other ge...

no. 2 approach

[0086] see Figure 11-Figure 13 , Figure 11 It is a three-dimensional assembly diagram of the motor provided in the second embodiment of the present application, Figure 12 for Figure 11 The three-dimensional exploded schematic diagram of the motor shown, Figure 13 for Figure 11 A cutaway perspective view of the motor shown. The structure of the motor 40 provided by the second embodiment is substantially the same as that of the motor 20 provided by the first embodiment, except that the motor 40 omits the anti-eccentricity elastic structure.

[0087] More specifically, the support seat 43 is roughly rectangular, and each anti-eccentricity magnetic component 47 includes a first anti-eccentricity component 471 and a second anti-eccentricity component 473 . In each anti-eccentricity magnetic component 47, the first anti-eccentricity part 471 is accommodated in the first receiving hole 4113, and the second anti-eccentricity part 473 is accommodated in the corresponding sec...

no. 3 approach

[0090] see Figure 14-Figure 15 , Figure 14 It is a three-dimensional assembly diagram of the motor provided in the third embodiment of the present application, Figure 15 for Figure 14 An exploded perspective view of the motor shown. The structure of the motor 50 provided by the third embodiment is substantially the same as that of the motor 20 provided by the first embodiment, except that the motor 50 omits the anti-eccentricity elastic structure.

[0091] Specifically, the motor 50 includes a base 51 , a support seat 53 , a shape memory alloy actuator (not shown in the figure) and an anti-eccentricity magnetic component 57 . The base 51 includes a bottom plate 511 and a first limiting portion 513 protruding from the bottom plate 511. The bottom plate 511 is provided with a first through hole 5111, and the first limiting portion 513 is concavely set toward the first through hole 5111. The slot 5131 , the limiting slot 5131 passes through the bottom plate 511 and commun...

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Abstract

The invention provides a motor, a camera module and a mobile terminal. The motor comprises a base, a supporting base and a shape memory alloy actuating piece, the shape memory alloy actuating piece is fixedly connected between the base and the supporting base, and the shape memory alloy actuating piece is used for driving the supporting base to move relative to the base. The motor further comprises an anti-eccentricity magnetic assembly. The anti-eccentricity magnetic assembly comprises a first anti-eccentricity piece and a second anti-eccentricity piece, the first anti-eccentricity piece is arranged on the base, the second anti-eccentricity piece is arranged on the supporting base, and when the motor is in a power-off state, static magnetic force between the first anti-eccentricity piece and the second anti-eccentricity piece makes the first central axis of the base coincide with the second central axis of the supporting base so as to solve the problem of eccentricity of the motor.

Description

technical field [0001] The present application relates to the field of camera technology, in particular to a motor, a camera module and a mobile terminal. Background technique [0002] Mobile terminals with camera functions, such as smart phones and tablet computers, have higher and higher requirements for the driving devices used, especially auto focus (Auto Focus, referred to as AF) and optical image stabilization (Optic l Image Stabilization , referred to as OIS) function is very important. [0003] Therefore, an optical image stabilizer (OIS) is often used in camera lenses for high-quality images to prevent image damage caused by hand shake during photography. The drivers used in traditional OIS devices include Voice Coil Motor (Voice Coil Motor, VCM for short) type OIS device, shape memory alloy (Shape Memory Alloy, shape memory alloy for short) type OIS device, VCM-shape memory alloy type OIS device, Piezoelectric OIS device or stepping motor OIS device. [0004] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/035G03B13/36G03B5/00G03B30/00
CPCH02K41/0356G03B13/36G03B5/00G03B30/00F03G7/06143F03G7/0665G03B2205/0076G03B2205/0007G03B3/00G02B27/646G02B7/09H04N23/687
Inventor 段然何瑛勇万海波李邓峰
Owner HUAWEI TECH CO LTD