PIERCING NUT AND METHOD FOR FIXING THE SAME TO INNER SURFACE OF MATING MEMBER HAVING CLOSED SECTIONAL SHAPE

• Main Authors: MASUI Keiichiro, KOJIMA Tsuyoshi, ARAKI Kenichiro, MATSUNAMI Shigeki, KATSUMATA Yuichi, KOGA Kazuhiro
• Format: Patent
• Language: English; French
• Published: 06.01.2022
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

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. Un écrou de perçage selon la présente invention comprend un filetage interne (11), une partie de poinçonnage annulaire (12), une rainure (16) annulaire, et une surface d'appui (17). Le filetage interne (11) est formé au centre d'un corps principal d'écrou (10). La partie de poinçonnage annulaire (12) fait saillie autour de la périphérie externe du filetage interne (11). La rainure (16) annulaire est formée autour de la périphérie externe de la partie de poinçonnage annulaire (12). La surface d'appui (17) fait saillie autour de la périphérie extérieure de la rainure (16) annulaire. La hauteur h de la partie de poinçonnage annulaire (12) est égale ou inférieure à la hauteur H de la surface d'appui (17) de manière opposée à la technique classique.