| 摘要 |
A quick-acting fastener assembly for securing a hinged cover to a storage box wherein the components of the fastener assembly are retained on the box and cover respectively when the fastener is not secured. The fastener assembly is self-actuatable without the need for any external tool, and the component parts are not loose and free to rattle in an unsecured position. The assembly includes a hollow stud member which has screw threads at both ends thereof, a securing nut assembly on one end, an adjusting nut assembly on the other end and a spring. The stud member is slidingly mounted through an opening in the box and includes a tab member carried thereon which restricts rotation of the stud relative to the box and also restricts axial movement of the stud in one direction. One end of the stud includes multiple lead threads which cooperate with the securing nut assembly to fasten the cover. The other end of the stud is threaded to cooperate with the adjusting nut assembly which compresses the spring located between the head of the adjusting nut and a member projecting from the box in order to bias the stud member in one direction until the tab member bears against the box. A prevailing torque feature is included between the threads of the stud and the adjusting nut assembly. A handle, pivotable about the axis of the securing nut, rotates the securing nut assembly to engage the multiple lead threads on the stud. When the fastener is fully engaged and the cover is secured to the box, the handle is pivoted to a stowed position within an envelope formed by the extremities of the door and the protruding portion of the stud member and is secured in this position. A detent arrangement in the securing nut assembly retains the handle in the stowed position, aided by a rubber coating on the gripping portion of the handle which provides a friction engagement with the securing nut assembly.
|
