| 摘要 |
A snap-fastener of two parts, provided by pin and plug members, for retention within apertures of loose tolerance requirements. The pin member includes, at one end, a head with integral conical washer, and at the other end, a boss which has a slot for a closing of the boss together to pass through an aperture. The plug member is received within an axial bore through the pin and is slidable within the slot to spread the boss and an inward taper thereof against an aperture edge. As the boss spreads, the taper rides by the aperture edge to force the pin inwardly against resistance of the washer. Tension, provided by the washer resistance, urges the aperture edge against the taper to clamp the interior of the boss about the plug, which then prevents closing of the slot for a positively locked retention until manual removal of the plug from the slot.
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