SMA actuator, camera module and electronic device

Abstract

The invention discloses an SMA actuator, a camera module and an electronic device. The SMA actuator comprises an SMA wire, a connecting rod, a supporting part, a first elastic arm and a driven part, wherein the SMA wire can be electrified to be contracted; one end of the connecting rod is connected with the SMA wire; one end of the connecting rod is elastically connected with the supporting part;the first elastic arm is arranged between the connecting rod and the supporting part, and the first elastic arm can be elastically bent; and one end of the connecting rod is hinged to the driven part,the SMA wire can drive the connecting rod to swing relative to the supporting part through contraction, and the connecting rod can drive the driven part to move. The SMA actuator has the beneficial effects that the displacement of the driven part can be larger than the contraction amount of the SMA wire, so that a large driven part stroke can be realized under the condition that the size of the SMA actuator is small, and miniaturization of the SMA actuator is facilitated. The invention relates to the field of electronics.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More

AI Technical Summary

Benefits of technology

This invention relates to an improved design for smaller linear motion devices used with microelectronics technology (MET). It allows for more precise movement by allowing the device's moving parts to move faster or slower compared to traditional designs due to its spring-like behavior when compressed during operation. By making it lighter but still able to perform accurately at high speeds, this new structure helps make MEMS systems thinner while maintaining their performance over longer periods of time without losing accuracy.

Problems solved by technology

This patented describes how an electrical control system uses a special kind of spring called smaam to move parts within it. These springs have specific properties like their ability to return when they get warm up again during use. They work well even if there're no power supply needed because they don’t require too much energy compared to traditional solenoid mechanisms. However, this design causes issues such as longer strokes due to increased size caused by the large number of moving components.

Images