Micro-displacement amplifying device

Abstract

The invention provides a micro-displacement amplifying device which comprises a support member and a piezoelectric member. The piezoelectric member comprises a steering block, two groups of triangularcomponents and a lever component. Each triangular component comprises a triangular input block and triangular output blocks. The triangular input block is provided with an intermediate part and two connecting parts, There are two triangular output blocks in the same triangular component. One end of each of the two triangular output blocks is flexibly hinged on the corresponding connecting part, wherein one end of the triangular output block which is not connected with the connecting part is flexibly hinged on the support member, and one end of the other triangular output block which is not connected with the connecting part is flexibly hinged on the steering block. The lever component comprises a first bar and a second bar. With arrangement of the triangular components, the direction of displacement can be changed while realizing displacement amplification, and the test platforms that can be applied are relatively wide in range. Meanwhile, the lever component with the asymmetric structure is arranged so that the amplification factor is relatively high.

Description

technical field [0001] The invention relates to an amplifying device, in particular to a micro-displacement amplifying device. Background technique [0002] In recent years, with the development of microelectronics technology, piezoelectric ceramics have been widely used in the field of micro-displacement drive and precision positioning due to their superior precision drive and positioning performance, but their micron-level displacement output often cannot meet the practical application Generally, it is necessary to design a displacement amplification device for displacement amplification. [0003] The Chinese invention patent with the publication number CN104900573B is a symmetrical differential lever micro-displacement amplification device designed by the applicant in the early stage, including a base, a substrate fixed on the base, and a piezoelectric device on the same plane as the substrate. The piezoelectric block has a pressing part and two transmission parts respec...

AI Technical Summary

Problems solved by technology

However, in this micro-displacement amplifying device, the displacement direction of the piezoelectric ceramic driver is the same as the amplified displacement direction, resulting in a relatively large volume of the whole device, and limited test platforms that can be applied; in addition, although the micro-displacement amplifying device can The differential lever is used to achieve a large displacement magnification, but it can only be amplified by the differential lever once, and the displacement magnification is still relatively limited

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