公开(公告)号：US4978265A

公开(公告)日：1990-12-18

申请号：US372652

申请日：1989-06-28

申请人： Thomas E. De Wan

发明人： Thomas E. De Wan

IPC分类号： F16B13/00 ,  F16B13/02 ,  F16B21/08 ,  F16B37/04

CPC分类号： F16B21/086 ,  F16B13/005 ,  F16B13/025 ,  F16B37/043

摘要： An anchor adapted for insertion in a hole through the wall. The wall includes inner and outer surfaces with the hole extending inwardly through the wall from the outer surface of the wall to the inner surface of the wall. The anchor comprises a head, a body, and a passage through the head and body into which a fastener, such as a screw, is adapted to be inserted. The passage has a central longitudinal axis. A surface on the head is engageable with the outer surface of the wall when the body of the anchor is inserted in the hole. At least one resiliently flexible leg extends axially of the body and terminates in a free end moveable generally radially inward and outward relative to the central axis of the body. The anchor also has a holder adjacent to the free end of the leg. The holder projects laterally outwardly from the leg. The leg is adapted to resiliently flex generally radially inwardly as the body is inserted in the hole to a point where the holder exits the hole on the inside surface of the wall. The leg, thereafter, is adapted to resiliently snap generally radially outwardly to a locking position where the holder extends beyond the hole and overlaps the inside surface of the wall to prevent the body from being pulled back through the hole. The distance between the wall-engaging surface of the head and the holder is essentially identical to the thickness of the wall so that when the holder is in the locking position the anchor cannot be moved axially with respect to the hole in the wall.

摘要翻译： 适于插入通过墙壁的孔中的锚杆。 该壁包括内表面和外表面，其中孔从壁的外表面向内延伸穿过壁向壁的内表面延伸。 锚固件包括头部，主体和通过头部和主体的通道，诸如螺钉的紧固件适于插入该头部和主体中。 通道具有中心纵轴。 当锚固体的主体插入孔中时，头部上的表面可与壁的外表面接合。 至少一个弹性柔性支腿沿主体轴向延伸并且终止于可相对于主体的中心轴线大致径向向内和向外移动的自由端。 锚还具有邻近腿的自由端的支架。 支架从腿部横向向外突出。 当主体被插入到孔中时，腿部适于弹性地弹性地弹性地弹性弯曲到保持器离开壁的内表面上的孔的点。 此后，腿部适于弹性地大致径向向外地卡扣到锁定位置，在该位置处，保持器延伸超过孔并与壁的内表面重叠以防止身体被拉回该孔。 头部和保持器的壁接合表面之间的距离基本上与壁的厚度相同，使得当保持器处于锁定位置时，锚固件不能相对于壁中的孔轴向移动。