US 11,885,366 B2
Piercing nut and method for fixing the same to inner surface of mating member having closed sectional shape
Shigeki Matsunami, Niwa-Gun (JP); Kazuhiro Koga, Niwa-Gun (JP); Keiichiro Masui, Niwa-Gun (JP); Kenichiro Araki, Niwa-Gun (JP); Tsuyoshi Kojima, Niwa-Gun (JP); and Yuichi Katsumata, Niwa-Gun (JP)
Assigned to Aoyama Seisakusho Co., Ltd., Niwa-Gun (JP)
Filed by AOYAMA SEISAKUSHO CO., LTD., Niwa-Gun (JP)
Filed on Jan. 21, 2022, as Appl. No. 17/580,829.
Application 17/580,829 is a continuation of application No. PCT/JP2021/019915, filed on May 26, 2021.
Claims priority of application No. 2020-113082 (JP), filed on Jun. 30, 2020.
Prior Publication US 2022/0145925 A1, May 12, 2022
Int. Cl. F16B 37/06 (2006.01)
CPC F16B 37/068 (2013.01) 11 Claims
OG exemplary drawing
 
1. A piercing nut comprising:
an internal thread formed at a center of a nut main body;
a ring-shaped punching part protruding around an outer periphery of the internal thread;
a ring-shaped groove formed around an outer periphery of the ring-shaped punching part; and
a bearing surface protruding around an outer periphery of the ring-shaped groove, wherein
an inner peripheral wall and an outer peripheral wall of the ring-shaped punching part form a tapered shape; and
the ring-shaped punching part has a height equal to or lower than that of the bearing surface, and
wherein the outer peripheral wall of the ring-shaped punching part is angled upwardly and outwardly from a bottom surface of the ring-shaped groove.