The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Jul. 07, 2022
Beihang University, Beijing, CN;
Tiantong Xu, Beijing, CN;
Haiwang Li, Beijing, CN;
Kaiyun Zhu, Beijing, CN;
Zhi Tao, Beijing, CN;
Kaibo Lei, Beijing, CN;
Yanxin Zhai, Beijing, CN;
Xiao Zhang, Beijing, CN;
Yuying Wu, Beijing, CN;
Wenbin Wang, Beijing, CN;
Xiaoda Cao, Beijing, CN;
Weidong Fang, Beijing, CN;
Beihang University, Beijing, CN;
Abstract
Disclosed is an ultra-micro voice coil motor based on Micro-Electro-Mechanical System (MEMS) three-dimensional coil. The ultra-micro voice coil motor based on MEMS three-dimensional coil comprises a yoke, where an accommodating cavity is formed in the yoke, and a tongue is arranged in the accommodating cavity of the yoke; and two permanent magnets symmetrically arranged at a top and a bottom of the accommodating cavity; the three-dimensional coil is provided with an iron core slot, and the tongue of the yoke passes through the iron core slot to be in clearance fit with the three-dimensional coil; one end of the yoke is provided with a baffle, same poles of two magnets face each other, and a stator of the voice coil motor is the three-dimensional coil or the yoke and the permanent magnets.