Piezoelectric motor, camera shooting assembly and electronic equipment

By using carrier and elastic members in the piezoelectric motor to fix and apply preload force respectively, the problem of low controllability of the shrapnel preload force in the prior art is solved, and the driving efficiency and reliability of the piezoelectric motor are improved.

CN119652999APending Publication Date: 2025-03-18GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202311209494.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-18
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

In existing piezoelectric motors, the shrapnel must not only provide preload force but also fix the piezoelectric block, resulting in a large elastic coefficient, low controllability of the preload force, and is prone to exceed the optimal working range due to tolerances, affecting driving efficiency and reliability.

Method used

The piezoelectric element is fixed and applied preloading force respectively by using a carrier and an elastic member. The carrier slides on the frame and abuts the elastic member to make the piezoelectric element tightly against the carrier. At the same time, the elastic member can be designed with a smaller elastic coefficient to improve the controllability of the preloading force.

Benefits of technology

By reducing the impact of factors such as tolerance on preload, the probability of preloading force being maintained within the optimal working range is improved, thereby improving the driving efficiency and reliability of the piezoelectric motor.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a piezoelectric motor, a camera shooting assembly and electronic equipment. The piezoelectric motor comprises a frame body, a carrier, a bearing part, a piezoelectric part and an elastic part, the carrier is located in the frame body, the bearing piece is arranged on the frame body in a sliding mode and is opposite to the carrier, and the sliding direction of the bearing piece is the direction close to or away from the carrier; the piezoelectric piece is arranged on one side, close to the carrier, of the bearing piece and is configured to vibrate after being electrified so as to drive the carrier to move; the elastic piece is arranged on the side, away from the carrier, of the bearing piece and abuts against the frame body and the bearing piece so that the bearing piece can abut against the piezoelectric piece to the carrier. By means of the arrangement, the elastic piece with the small elastic coefficient can be adopted to apply the pre-tightening force to abutting connection of the piezoelectric piece and the carrier, so that the magnitude of the pre-tightening force generated by the elastic piece can be calibrated, the influence of tolerance and other factors on the pre-tightening force is reduced, and the probability that the pre-tightening force can be kept within the optimal working range is increased.
Need to check novelty before this filing date? Find Prior Art