公开(公告)号：EP2644912B1

公开(公告)日：2019-06-19

申请号：EP11843272.3

申请日：2011-11-18

申请人： Topura Co., Ltd.

发明人： MORI Shigeto ,  OKAMURA Yousuke ,  TOZAWA Shunji

IPC分类号： F16B39/30

公开(公告)号：EP2644912A1

公开(公告)日：2013-10-02

申请号：EP11843272.3

申请日：2011-11-18

申请人： Topura Co., Ltd.

发明人： MORI Shigeto ,  OKAMURA Yousuke ,  TOZAWA Shunji

IPC分类号： F16B39/30

CPC分类号： F16B39/282 ,  F16B39/30

摘要： The present invention is intended to provide a novel loosening prevention threaded fastener in which loosening of a fastening portion can be prevented in a reliable manner, without using an adhesive agent, and besides, the strength of fastening can be made large, and which can still be used in a repeated manner.
The present invention has a construction in which a clearance side protrusion portion protruding radially outwardly toward a clearance flank surface of a female screw thread is formed on a clearance flank surface of a male screw thread, and the clearance side protrusion portion is constructed such that a tip end portion thereof interferes with the clearance flank surface of the female screw thread, in a state where a pressure flank surface of the male screw thread is in contact with a clearance flank surface of the female screw thread, wherein at the time of screw fastening, the crest end portion of the clearance side protrusion portion is pushed to the pressure flank surface of the female screw thread so that it is deformed in a deflective manner to apply a predetermined contact pressure to a contact surface due to its elastic restoring force, thus providing resistance against a loosening direction.

摘要翻译： 本发明旨在提供一种新型的松动防止螺纹紧固件，其中可以以可靠的方式可靠地防止紧固部分的松动，而不使用粘合剂，此外，可以使紧固的强度变大，并且仍然可以 重复使用。 本发明的结构是，在外螺纹的间隙侧面上形成有沿内螺纹的间隙侧面的径向向外突出的间隙侧突出部，并且间隙侧突起部构成为 在外螺纹的压力侧面与内螺纹的间隙侧面接触的状态下，其前端部与内螺纹的间隙侧面相干涉，其中在螺纹紧固时 间隙侧突起部的顶端部被推压到内螺纹的压力侧面，使其以偏转方式变形，由于其弹性恢复力而向接触面施加规定的接触压力，因此 提供抵抗松动方向的阻力。