| 摘要 |
The invention disclosed herein is a catch-and-release device that has a unique mechanism with a self-locking function independent of external resistance. The catch-and-release device hereof has opposing C-shaped jaws that are reciprocally driven between an open position and a closed position by a crank and slider assembly. The crank of the crank and slider assembly rotates approximately 90° in one direction during closing and locking and rotates approximately 90° in the opposite direction during unlocking and opening. The crank arm of the crank and slider assembly is at one end eccentrically mounted to the crank and at the other end flexibly mounted to a reciprocating slider which, in turn, is attached at the other end thereof to the operating arms of the jaws. The crank arm during the rotation of the crank (in either direction) reaches a position or null point wherein the longitudinal axes of the crank arm and the reciprocating slider are aligned. A spring is secured to the crank and slider assembly that biases the crank arm toward the crank. The spring force with the crank rotating in the direction of closing and locking is initially exerted counter to the closing effort.
|
