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:
Feb. 24, 2026
Filed:
Jun. 14, 2024
Aac Acoustic Technologies (Shanghai) Co., Ltd., Shanghai, CN;
Beijing Xiaomi Robot Technology Co., Ltd., Beijing, CN;
Chunjiang Li, Shanghai, CN;
Yuntong Li, Shanghai, CN;
Bing Xie, Shanghai, CN;
Chuiyou Zhou, Shanghai, CN;
Liang Jiang, Shanghai, CN;
AAC Acoustic Technologies (Shanghai) Co., Ltd., Shanghai, CN;
Beijing Xiaomi Robot Technology Co., Ltd., Beijing, CN;
Abstract
The present application provides a linear drive mechanism, including a casing, a front cover and a rear cover fixed at opposite ends of the casing, a stator arranged in the casing, a hollow rotor rotatably connected to the stator, and a ball screw including a screw nut and a center screw arranged in the screw nut. The screw nut is provided with first ball grooves recessed inwardly and threadedly spiraled at intervals, and the center screw is provided with a second ball grooves that are spiraled. The ball screw further includes a plurality of balls sandwiched between the first ball grooves and the second ball grooves to form a rolling connection between the screw nut and the screw body. The linear drive mechanism can realize real-time control and has good reliability, high efficiency, more balanced driving force, low overall height, small length, friendly mounting size and simple structure.