Locking and unlocking mechanism

Abstract

The invention discloses a locking and unlocking mechanism which comprises an unlocking handle, a driving connecting rod and at least two driven assemblies; the two ends of the driving connecting rod are rotationally connected with the unlocking handle and a first transmission connecting rod correspondingly; each driven assembly comprises a transmission shaft which is rotationally mounted, a second connecting rod which is fixedly mounted on the transmission shaft and an unlocking blade which is mounted at the tail end of the transmission shaft; a first connecting rod is fixedly installed on the transmission shaft of the first driven assembly, and the other end of the first connecting rod is rotationally connected with the lower end of the first transmission connecting rod; and the second connecting rods of the adjacent driven assemblies are rotationally connected with the two ends of a second transmission connecting rods correspondingly. According to the locking and unlocking mechanism, a double-parallelogram series connection link mechanism is adopted to realize synchronous rotation movement of double unlocking blades; and meanwhile, a damping adjusting cylinder is matched with a jackscrew to adjust friction force to achieve a gravity compensation mechanism, a ball plunger is matched with a limiting semi-cylinder to achieve in-place force sensing prompt, and the use performance of the unlocking mechanism is improved.

Description

technical field [0001] The invention relates to the field of mechanical structures, in particular to a locking and unlocking mechanism. Background technique [0002] With the promotion of surgical robots in hospitals, surgical robot trolleys are replaced more frequently in different environments. In order to facilitate nurses to carry and replace workbench trolleys, different workbench trolleys need to have the function of fast locking and separation. In the prior art The patent number is: CN201620856605.5, and the invention name is a patent for a chainable workbench. In the patent, it is proposed to set up a quick locking mechanism between the main workbench and the auxiliary workbench, but one of the locking pieces of the quick lock mechanism and the handle Coaxial, it is not easy to adjust the position of the handle. In addition, the patent does not have a gravity compensation mechanism and a force-feeding prompt function when rotating in place, which reduces the use effe...

AI Technical Summary

Problems solved by technology

[0002] With the promotion of surgical robots in hospitals, surgical robot trolleys are replaced more frequently in different environments. In order to facilitate nurses to carry and replace workbench trolleys, different workbench trolleys need to have the function of fast locking and separation. In the prior art The patent number is: CN201620856605.5, and the invention name is a patent for a chainable workbench. In the patent, it is proposed to set up a quick locking mechanism between the main workbench and the auxiliary workbench, but one of the locking pieces of the quick lock mechanism and the handle Coaxial, it is not easy to adjust the position of the handle. In addition, the patent does not have a gravity compensation mechanism and a force sense prompt function when rotating in place, which reduces the use effect of the quick lock mechanism. Therefore, the present invention proposes a new technical solution for the above defects.

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