Wrist device, mechanical arm and robot

• Main Authors: WANG ZHENG, LIU JIANHUI, LIU SICONG, FANG ZHONGGUI, TAN QINLIN
• Format: Patent
• Language: Chinese; English
• Published: 18.02.2022
• Subjects: CHAMBERS PROVIDED WITH MANIPULATION DEVICES; HAND TOOLS; MANIPULATORS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; TRANSPORTING

The utility model discloses a wrist device, a mechanical arm and a robot. The wrist device comprises a rotating unit. The rotating unit comprises two connecting pieces and a flexible cavity side wall, the cavity side wall is arranged between the two connecting pieces, and the two sides of the cavity side wall extend to the corresponding connecting pieces respectively and are enclosed in the circumferential direction of the connecting pieces to form a closed cavity. The connecting pieces or the side wall of the cavity are provided with inlets and outlets, the inlets and outlets are used for allowing pressure fluid to enter and exit the closed cavity, the side wall of the cavity is provided with a folding structure, and when the pressure intensity of the fluid in the closed cavity changes, the folding structure can deform to drive the connecting pieces on the two sides of the side wall of the cavity to rotate relatively. Due to the fact that the rotating unit is added, the wrist device can rotate without a comp