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Flexible and bendable shape-memory alloy actuator

A memory alloy and memory alloy wire technology, which is applied to machines/engines, mechanisms that generate mechanical power, mechanical equipment, etc., can solve the problems of inability to further reduce the volume size, inconvenient adjustment of parameters, and small output displacement, and achieve easy debugging. It is integrated with the installation, realizes parameter adjustment, and does not produce the effect of electromagnetic interference.

Inactive Publication Date: 2015-12-02
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to solve the problem that the traditional electromagnetic linear drive converts the rotational motion of the motor into linear motion through devices such as worm gears or racks and pinions. Small size, low integration, complex structure, and inconvenient adjustment parameters
[0005] The second object of the present invention is to solve the problem that the existing shape memory alloy linear actuator usually adopts segmented superimposition to increase the output displacement of the driver in order to reduce the size and volume, but the segmented shape memory alloy wire must be connected through an additional mechanism , which makes the structure complex, difficult to manufacture, and the volume size cannot be further reduced

Method used

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  • Flexible and bendable shape-memory alloy actuator

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Embodiment Construction

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0046] Such as figure 1 As shown, the present invention provides a flexible and bendable shape memory alloy driver, which includes: a shape memory alloy wire 200, and a driving end 100 for fixed connection with one end of the shape memory alloy wire 200 and the other end of the shape memory alloy wire 200 The fixed end 300, which is fixedly connected at one end, also includes a solenoid 410 wound around the shape memory alloy wire 200, the solenoid 410 and the shape memory alloy wire 200 can be folded and bent together and maintain the bent shape; wherein, the shape memory alloy The wire 200 can be nickel-titanium, copper-based or iron-based memory alloy material.

[0047] In another embodiment, such as figure 1 As shown, the driving end 100 includes a bias spring 120, a dr...

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Abstract

The invention relates to a flexible and bendable shape-memory alloy actuator. A shape-memory alloy wire is taken as an actuation element, is retracted when electrified and heated and is elongated when cooled, so that displacement of the actuator and output of force are realized. The actuator comprises a drive end, a flexible solenoid and a fixed end, wherein the shape-memory alloy wire is arranged in the bendable solenoid, one end of the shape-memory alloy wire is in rigid connection with an output shaft, and the other end of the shape-memory alloy wire is connected with a fixed end cap; a bias spring is arranged in the drive end and can assist the shape-memory alloy wire in elongation in the cooling process. The actuator is small in size, light in weight and simple and reliable in structure, can bend according to certain curvature and can be easily mounted and integrated with an external mechanism, and the output force and the displacement are adjustable.

Description

technical field [0001] The invention relates to a driving device, in particular to a flexible and bendable shape memory alloy driver. Background technique [0002] The traditional electromagnetic driver has a large volume, complex structure, high manufacturing and processing costs, and is prone to electromagnetic interference, so its application field is greatly limited. The main principle of the commonly used shape memory alloy linear actuator is to use the temperature to control the transformation between the low temperature phase martensite and the high temperature phase austenite of the shape memory alloy wire to realize the output of the actuator force and displacement. When the alloy is in the low-temperature martensitic phase, the alloy is soft, showing good ductility and stretchability. When heated to a certain temperature, the stretched alloy begins to shrink and transform into austenite. Form the output force and displacement. The output displacement of the shape...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G7/06
Inventor 沈传亮王国军郑国龙孙国超马晓宇邱晟桐
Owner JILIN UNIV
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