| 摘要 |
A blind snap mounted clip fastener for anchoring into a round hole pattern stamped from a single sheet metal piece with a base portion (50) that is substantially flat, from which a cylindrical sleeve (24) is drawn and internally threaded. A pair of locking arms (26a) and (26b) projecting outwardly from the base portion, with an anti-rotate tab (20) projecting outwardly from a locking arm (26a) and bent downwardly and perpendicularly to the locking arm. A pair of spaced apart cylindrical shaped segments (28) projecting outwardly from base portion (50) and bent downwardly generally perpendicular and concentric to the sleeve. Along the vertical surface of each cylinder segment, a locking pawl (22) is sheared, shaped and bent outwardly away from the segment with its top edge placed at a predetermined distance from the top surface of the base portion and concentric to the segment perimeter. The blind snap mounted fastener is simple to manufacture and provided With a multiplicity of features such as: anti-rotate, anti-vibration, self-locking, multiple engaging threads, able to accommodate tolerance accumulation, able to tolerate dimensional variations in mounting panel material thickness and with a prevailing locking torque feature. The fastener can be used and installed by anyone possessing simple home tools, such as a drill.
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