公开(公告)号：US20230014756A1

公开(公告)日：2023-01-19

申请号：US17933165

申请日：2022-09-19

申请人： AOYAMA SEISAKUSHO CO., LTD.

发明人： Dan KITAJIMA ,  Kazuhiro KOGA ,  Yuichi KATSUMATA

IPC分类号： F16B35/06

摘要： Provided is a crimp securing structure of a bolt in which a crimp bolt 10 having a crimping recess 13 on the upper surface of the head is crimped onto a metal sheet 30. The thickness of a metal material press-fitted into the crimping recess 13 of the crimp bolt is made smaller at the peripheral edge of the crimping recess 13 and is made larger in the center portion thereof. In order to obtain this crimp securing structure, a crimping die 20 in which a stress-relief recess 23 is formed in a center portion of a convex portion is used to prevent the occurrence of excessive local stress in the crimping recess 13.

公开(公告)号：US20220145925A1

公开(公告)日：2022-05-12

申请号：US17580829

申请日：2022-01-21

申请人： AOYAMA SEISAKUSHO CO., LTD.

发明人： Shigeki MATSUNAMI ,  Kazuhiro KOGA ,  Keiichiro MASUI ,  Kenichiro ARAKI ,  Tsuyoshi KOJIMA ,  Yuichi KATSUMATA

IPC分类号： F16B37/06

摘要： A piercing nut according to the present invention includes an internal thread 11, a ring-shaped punching part 12, a ring-shaped groove 16, and a bearing surface 17. The internal thread 11 is formed at the center of a nut main body 10. The ring-shaped punching part 12 protrudes around the outer periphery of the internal thread 11. The ring-shaped groove 16 is formed around the outer periphery of the ring-shaped punching part 12. The bearing surface 17 protrudes around the outer periphery of the ring-shaped groove 16. The height h of the ring-shaped punching part 12 is equal to or lower than the height H of the bearing surface 17 in the opposite manner to the conventional technique.