Abstract A plastic fastener for panels comprises in combination a main body of the shape of an angular pillar provided at the upper end thereof with a flange, elastic tongues formed one each on one of the two pairs of opposed side walls of the main body and extended from the lower side of the flange and slanted downwardly toward the interior of the main body, and fitting means formed one each on the other pair of side walls as bulged outwardly, with the aforementioned elastic tongues provided at the lower ends thereof with grips having threads incised therein. With this plastic fastener, union of a supporting panel and a supported panel is accomplished by inserting the main body into a hole bored in advance in the supporting panel until the flange thereof comes into tight contact with the supported panel and depressing a screw past the supported panel into the main body thereby causing the threads on the grips to come into fast engagement with the threads on the screw. If the screw happens to be exposed to a force tending to expel the screw out of the panel, since the elastic tongues are inwardly slanted downwardly from the lower side of the flange, the resultant force has an effect of enhancing the squeeze of the grips on the screw.
a plastic fastener for panels, comprising in integral combination of a main body of the shape of a pair of hinged angular U-shaped pillars each possessed of a pair of spaced opposed side walls interconnected by base means at the lower one end and provided with an interconnecting flange-like head extended outwardly from the opposite upper end boundaries, resilient fitting means provided one each on said side walls and adapted to grasp the edges of a hole bored in a supporting panel in cooperation with the lower side of said head, and mutually opposed elastic tongues forming intermediate side walls positioned between said spaced opposed side walls substantially at right angles and extended from the lower side of said head and slanted toward the interior of the angular pillar of the main body, and said base means, said tongues being provided adjacent the free ends thereof with a plurality of female threads incised in arcuately depressed surfaces, said main body base means forming an imperforate hinged wall, said pair of pillars being adapted to abut with each other along a vertical plane and the halves of the main body being connected to each other through a transverse thin-wall hinge formed in said bottom wall.
Claim 2
Dependent Claim
204 words
a plastic fastener for panels, comprising in integral combination of a main body of the shape of a pair of hinged angular U-shaped pillars each possessed of a pair of spaced opposed side walls interconnected by base means at the lower one end and provided with an interconnecting flange-like head extended outwardly from the opposite upper end boundaries, resilient fitting means provided one each on said side walls and adapted to grasp the edges of a hole bored in a supporting panel in cooperation with the lower side of said head, and mutually opposed elastic tongues forming intermediate side walls positioned between said spaced opposed side walls substantially at right angles and extended from the lower side of said head and slanted toward the interior of the angular pillar of the main body, and said base means, said tongues being provided adjacent the free ends thereof with a plurality of female threads incised in arcuately depressed surfaces, said main body base means forming an imperforate hinged wall, said pair of pillars being adapted to abut with each other along a vertical plane and the halves of the main body being connected to each other through a transverse thin-wall hinge formed in said bottom wall.