Flexible actuator

Abstract

The invention discloses a flexible actuator which comprises a cover plate, a bottom plate, a dielectric elastic body, flexible electrodes and aluminum foils. The cover plate is of a circular ring structure; the bottom plate is located on the lower side of the cover plate and is of a round structure, a blind hole is formed in the bottom plate, and an inflation hole is formed in the bottom of the blind hole; the dielectric elastic body is tightly pressed between the lower end face of the cover plate and the upper end face of the bottom plate after being pre-stressed, the portion, between the cover plate and the bottom plate, of the dielectric elastic body is an activity area, the dielectric elastic body is formed by stacking multiple single-layer dielectric elastic main bodies, and the active area of each layer of the dielectric elastic main body is divided into multiple symmetric sub areas in the same way; the upper surface and the lower surface of each sub area are coated with the flexible electrodes, and a distance is reserved between every two adjacent flexible electrodes; the aluminum foils are arranged on the upper surface and the lower surface of each sub area in a one-to-one correspondence mode and are led out from boundaries formed by the bottom plate and the cover plate. The flexible actuator has the advantages of being good in flexibility, large in drive force, simple in structure and good in universality, is simple in structure, can be repeatedly used and is low in cost, free of noise and magnetism and convenient to install.

Description

technical field [0001] The invention relates to the technical field of actuators, in particular to a flexible actuator. Background technique [0002] The actuation methods of traditional actuators mostly adopt mechanical actuation, motor actuation, and hydraulic actuation. These traditional actuators have problems such as long response time, complex mechanical structure, high noise, poor flexibility, and poor bionic performance. In addition to the traditional actuators, in recent years, researchers have developed many actuators based on new functional materials such as shape memory alloys and magnetostrictive materials. However, the above-mentioned actuators also have long response time, The defects of poor flexibility and poor bionic performance. [0003] Dielectric elastomer is a kind of electric field activated polymer material, commonly known as artificial muscle because of its performance similar to natural muscle. Compared with other new functional materials and trad...

AI Technical Summary

Problems solved by technology

[0005] (1) It uses a film as a supporting frame, the structure is relatively complex, and it affects the flexibility performance

[0006] (2) It can only generate actuation forces in the left and right directions through the deformation of the first dielectric elastomer film and the second dielectric elastomer film, and the application field is limited

[0007] (3) Its dielectric elastomer film is a single layer, and only one surface is coated with electrodes, and the output driving force is limited

[0008] (4) The electrodes used are ordinary graphite powder materials, which have poor conductivity and fluidity, which affects the deformation ability of dielectric elastomers

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