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SMA actuating device, camera module and electronic device

A camera module and electronic equipment technology, applied in the electronic field, can solve the problems of large driving stroke, small shrinkage of SMA wire, unfavorable miniaturization of SMA actuator, etc., and achieve the effect of improving tilt and image quality

Pending Publication Date: 2020-03-17
SEADEC TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the SMA actuator usually directly pulls the driven part through the SMA wire. The technical defect is that the driving stroke of the driven part is usually not greater than the shrinkage of the SMA wire, and usually only by increasing the SMA actuator. The overall scale makes the driving stroke of the driven part larger, which is not conducive to the miniaturization of the SMA actuator

Method used

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  • SMA actuating device, camera module and electronic device
  • SMA actuating device, camera module and electronic device
  • SMA actuating device, camera module and electronic device

Examples

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Embodiment 1

[0034] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

[0035] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0036] I...

Embodiment 2

[0065] Such as Figures 7 to 8 As shown, the difference between this embodiment and Embodiment 1 is: in this embodiment, the shape of the first elastic arm 103 is U-shaped, one end of the first elastic arm 103 is connected to the supporting part 104 and the first elastic arm 103 is The other end is connected with the connecting rod 102 . The first elastic arm 103 is U-shaped, which is beneficial to strengthen the deformation ability of the first elastic arm 103, so that the stroke of the driven part can be further increased.

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Abstract

The invention discloses an SMA actuating device, a camera module and an electronic device. One end of each connecting rod is elastically connected with a supporting part; and each first elastic arm isarranged between one connecting rod and one supporting part and can be elastically bent. Besides, a driven member is also arranged; one end of each connecting rod is hinged to the driven part. SMA wires can drive the connecting rods to swing relative to the supporting parts through contraction. The connecting rods can drive the driven part to move; and the ends of the two connecting rods are coaxially hinged to the driven part. The SMA actuating device has advantages that the displacement of the driven part can be larger than the shrinkage of the SMA wire, so that the large stroke of the driven part is realized while the size of the SMA actuating device is small; and since the two connecting rods in the SMA actuating device are coaxially hinged, the tilt of the lens frame body is improved, so that the imaging quality is improved. The invention relates to the field of electronics.

Description

technical field [0001] The present invention relates to the field of electronics, in particular to SMA actuators, camera modules and electronic devices. Background technique [0002] An actuator (actuating device) is a commonly used driving mechanism in the electronic field, and can be used to drive a camera. SMA stands for shape memory alloy, which is a type of drive element in an actuator. SMA is a material composed of two or more metal elements that has a shape memory effect (SME) through thermoelasticity and martensitic phase transformation and its inversion. SMA can be deformed at a lower temperature, and can recover the shape before deformation after being heated by electricity, so as to realize electronically controllable shrinkage. [0003] The Insert Molding Bottom includes an insert set and an injection molded body. The injection molded body is generally made of plastic, and the insert set is generally made of different materials other than plastic. Injection mo...

Claims

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Application Information

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IPC IPC(8): G02B7/04G02B27/64G03B13/34G03B5/00
CPCG02B7/04G02B27/646G03B13/34G03B5/00
Inventor 刘述伦计树标蔡日新
Owner SEADEC TECH LTD
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