Foot-operated single-point safety unlocking structure and jack

Abstract

The present invention relates to a foot-operated single-point safety unlocking structure and a jack. The foot-operated single-point safety unlocking structure is arranged in cooperation with a jack base, and the jack base at least comprises two symmetrically arranged wallboards. The foot-operated single-point safety unlocking structure comprises: a safety pin shaft movably assembled between the opposite sides of the two wallboards; a lifting arm rotatably assembled between the two wallboards by means of a lifting arm shaft, wherein a safety member is fixed to the bottom side of the end of the lifting arm close to the safety pin shaft, and a plurality of safety engagement slots arranged at equal intervals to radially engage with the annular side wall of the safety pin shaft are provided at the bottom end of the safety member; a foot pedal movably assembled, by means of a pedal pivot shaft, on the side of the jack base facing away from the moving direction of the lifting arm; and at least one single-point unlocking assembly arranged between the safety pin shaft and the foot pedal, so as to drive the safety pin shaft to move and maintain an unlocked / self-locked state between the safety member and the safety pin shaft when the foot pedal is operated once. The present invention only requires single-point triggering of the foot pedal to enable the jack to descend smoothly and normally, thereby improving the usage convenience and the operation safety.

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