Method of using SMA wire to drive active part to move

A technology of moving parts and line drive, which is applied to the parts of color TV, parts of TV system, electrical components, etc. It can solve the problems such as difficulty in improving efficiency and achieve the effect of improving work efficiency

Active Publication Date: 2019-07-02
NINGBO SUNNY OPOTECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of heating the SMA wire takes a certain amount of time, and when the SMA wire reaches the expected stroke, due to the elastic characteristics of the SMA wire itself, it takes a long time for the SMA wire to stabilize at the expected stroke position. It is difficult to improve the efficiency of driving lens movement

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  • Method of using SMA wire to drive active part to move
  • Method of using SMA wire to drive active part to move
  • Method of using SMA wire to drive active part to move

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Embodiment Construction

[0022] In order to better understand the application, various aspects of the application will be described in more detail with reference to the drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0023] It should be noted that in this specification, expressions such as first, second, etc. are only used to distinguish one feature from another feature, and do not represent any restriction on the feature. Therefore, without departing from the teaching of the present application, the first subject discussed below may also be referred to as the second subject.

[0024] In the drawings, the thickness, size, and shape of objects ha...

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Abstract

The invention discloses a method of using an SMA wire to drive an active part to move, which comprises steps: the temperature of a first SMA wire rises to a first temperature, the temperature of a second SMA wire rises to a second temperature, the first temperature is higher than an SMA wire deformation critical temperature, the second temperature is lower than or equal to a deformation critical temperature, the first SMA wire at the first temperature and the second SMA wire at the second temperature are located at a first contraction position and a second stretching position after stabilization, and the active part moves to a desired position corresponding to the first contraction position and the second stretching position under drive of the first SMA wire and the second SMA wire.

Description

Technical field [0001] This application relates to a method of using SMA wires to drive moving parts. Background technique [0002] Shape Memory Alloys (SMA for short) is an alloy material that can eliminate its deformation at a lower temperature after heating up and restore its original shape before deformation, that is, an alloy with a "memory" effect. The SMA cable can be used to replace the motor in the camera module to drive the lens movement, so as to achieve optical functions such as focusing. Compared with the traditional motor, the SMA wire has a smaller volume, which can effectively reduce the overall size of the module, which is beneficial to the miniaturization of the module. [0003] Using the SMA wire to drive the lens movement is achieved by the contraction of the SMA wire at a higher temperature. During the movement, when one part of the SMA wire contracts, the other part of the SMA wire is in a stretched state to match the movement of the lens . When the lens mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/04H04N5/225
CPCG02B7/04H04N23/50H04N23/55
Inventor 陈振宇方银丽涂洪德张建龙丁海灵
Owner NINGBO SUNNY OPOTECH CO LTD
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