Patent ID: 6209179
Filing Date: 2001-04-03
Classification: F16B,Y10T

Abstract:
A clasping device comprising:a hook plate provided at one end thereof with a retaining portion, and at another end thereof with a retaining seat, said retaining portion having two pivoting holes and two insertion holes, said retaining seat having a retaining slot which is provided with a through hole, said retaining seat provided with a cross tube having a cross through hole, and a cavity having a pillar and a retaining hole in communication with said cross through hole, said cavity further having a cross slot, said hook plate further provided in a back thereof with two guide slots;a control bolt having a head greater in diameter than said cross tube of said retaining seat, and a shank having an inverted hook and a slanted guide surface, said shank provided with a spring fitted thereover, said shank being received in said cross through hole of said retaining seat of said hook plate;a retaining plate provided with a hooked body, a through hole, and a cross shaft, said retaining plate being received in said cavity of said retaining seat of said hook plate such that said pillar of said cavity is received in said through hole of said retaining plate, and that said hooked body of said retaining plate is located in said retaining slot of said retaining seat of said hook plate, and further that said cross shaft of said retaining plate is received in said cross slot of said cavity of said retaining seat of said hook plate, said receiving plate further provided with a spring which is fitted over said pillar of said cavity via said through hole of said retaining plate;a reinforcing hook of a metal material and provided with a circular body having two bracing rods extending therefrom such that said bracing rods are located in said guide slots of said hook plate via said insertion holes of said retaining portion of said hook plate;a cover provided in an inner side thereof with a receiving slot for receiving said retaining plate, said cover further provided with a press plate, said cover intended to seal off said cross slot of said hook plate such that said press plate of said cover presses against said two bracing rods of said reinforcing hook and said spring of said retaining plate, said cover being fastened by a screw which is engaged with said pillar of said cavity of said retaining seat of said hook plate such that said inner side of said cover is kept apart from said retaining plate, and that said press plate presses against said cross shaft of said retaining plate; anda recovery spring of a U-shaped construction and provided with two arms and a crown portion, said two arms being received at the free ends thereof in said two pivoting holes of said retaining portion of said hook plate, said two arms capable of being turned such that said crown portion is received in said retaining slot of said hook plate, and that said crown portion is located by said hooked body of said retaining plate, and further that said slanted guide surface of said shank of said control bolt pushes said retaining plate to move toward said receiving slot of said cover to release said crown portion of said recovery spring by said hooked body of said retaining plate at such time when said control bolt is pressed to displace.