Torque-Limited and Removable Fastener for One-Time Use
    3.
    发明申请
    Torque-Limited and Removable Fastener for One-Time Use 有权
    扭矩限制和可拆卸紧固件一次性使用

    公开(公告)号:US20130149065A1

    公开(公告)日:2013-06-13

    申请号:US13314655

    申请日:2011-12-08

    IPC分类号: F16B33/04

    摘要: A torque-limited fastener turnable in fastening and loosening directions for one-time use includes a fastener head with a base, a set of lugs extending from the base, and an optional set of ramps extending from the base. The lugs include abutment surfaces facing a fastening tool slot recess that receives a fastening tool. When the fastening tool is turned in the fastening direction it bears against the lug surfaces. The lugs shear off or plastically deform into recesses when the fastening tool applies a limiting fastening torque. The ramps have abutment surfaces facing a loosening tool slot recess that receives a loosening tool. The ramps cam the fastening tool over the ramp abutment surfaces if the fastening tool is in the fastening tool recess and is turned in the fastening direction after the lugs have sheared off or have plastically deformed in response to application of the limiting torque.

    摘要翻译: 扭矩限制的紧固件可在一次性使用的紧固和松动方向上转动,包括具有基座的紧固件头部,从基座延伸的一组凸耳以及从基座延伸的可选的一组斜面。 凸耳包括面向紧固工具槽凹槽的邻接表面,其接纳紧固工具。 当紧固工具沿紧固方向转动时,它抵靠在凸耳表面上。 当紧固工具施加限制紧固扭矩时,凸耳剪切或塑性变形成凹槽。 斜面具有面向松动工具槽凹槽的邻接表面,其接收松动工具。 如果紧固工具处于紧固工具凹槽中,则斜面将紧固工具凸起在斜面邻接表面上,并且在凸耳已经剪切之后沿着紧固方向转动,或者响应于施加限制扭矩而塑性变形。