Aoyama Seisakusho Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Honda Motor Co., Ltd.

Shigeki Matsunami

Yukinori Fujimoto

Kazuhiro Koga

Naoki Hoshino

Keiichiro Masui

Tsuyoshi Kojima

Toshinao Wada

Kazunori Hida

Takashi Matsuda

Akihiro Furukawa

Yuichi Hiroi

Mitsuki Yoshida

Tomoyuki Fukuchi

Kenichiro Araki

Yuichi Katsumata

Masato Kanbe

Katsuhisa Katoh

Hideharu Kouketsu

Jun Omura

Takuya Yoshida

Hideharu Koketsu

Toshiya Ohta

Yuichiro Suzuki

A piercing nut according to the present invention includes an internal thread, a ring-shaped punching part, a ring-shaped groove, and a bearing surface. The internal threadis formed at the center of a nut main body. The ring-shaped punching partprotrudes around the outer periphery of the internal thread. The ring-shaped grooveis formed around the outer periphery of the ring-shaped punching part. The bearing surfaceprotrudes around the outer periphery of the ring-shaped groove. The height h of the ring-shaped punching partis equal to or lower than the height H of the bearing surfacein the opposite manner to the conventional technique.

Piercing nut and method for fixing the same to inner surface of mating member having closed sectional shape

To reduce the load required to press-fit a nut into a plate material, the nut includes a base partprovided with a female screw, a cylindrical protrusion partprotruding from one surface of the base part and a plurality of foot partsprotruding from an outer peripheral surface side of the protrusion part. An end of the respective foot parts closer to the protrusion part is formed so that a width gradually expands from a tip end side toward a protrusion part side, and that both outer sides of the end are arc-shaped in plan view.

Nut and fixing structure of nut

An article fixing device includes an adjustment mechanism, a protrusion, and a fastening bolt. The adjustment mechanism is joined to a side of a lower surface of the roof panel. The protrusion is provided integrally with the adjustment mechanism and fixes a roof rail. The fastening bolt fastens a support member to the adjustment mechanism. Further, the adjustment mechanism includes a fitting convex member provided integrally with the protrusion, a fitting concave member that that is able to be screwed into the fitting convex member, and a resin ring that is provided in the fitting concave member and that cooperates with rotation of the fastening bolt.

Article fixing device

A caulking bolt includes a shank and a head, wherein a bearing face of the head has, along an outer circumference of the shank, a groove having a ring shape into which a crimped member is fitted. The caulking bolt includes projections and depressions for whirl-stop in the groove.

Caulking bolt

There is provided a caulking bolt which can be fastened by a general nut even when used to fix thin plates to each other, and which can also provide fitting strength similar to that of conventional products. The caulking bolt includes a head part and a shaft part, and has a non-circular, flat, rotation preventive protrusion formed on a seat surface of the head part. Also, the upper end of a normal complete thread part formed in the shaft part is brought close to the seat surface of the head part with a distance of 3 pitches or less, and an incomplete thread part formed at the portion of 3 pitches or less is used as a stopper part into which a metal flows when the caulking bolt is driven into a metal plate.

There is provided a structure capable of ensuring a bearing surface pressure on an inner diameter side and an outer diameter side of a washer even if a thickness of the washer is suppressed. In a washer used at a fastening portion of a vehicle, a configuration in which a bearing surface is sectionalized into two faces, an inner abutting face and an outer abutting face, by an annular groove is adopted.

Washer and vehicle structure

Provided is a case nut in which a nut that is held inside a case body so as to swing freely is not fixed as a result of electrodeposition coating treatment. The case nut is provided with a case body that is welded to a body, and a nut that is held inside the case body so as to float freely. The nut is provided with a metal nut body and a resin insulating member that is formed on the outside of the nut body and prevents contact of the upper surface, lower surface and outer surfaces of the nut body with the inner wall surfaces of the case body and with the body.

Case nut

A self-locking fastener wherein crests of respective threads of a part of a group of threads on the self-locking fastener are deformed to provide a group of lock portions so that the respective threads have a cross section of a trapezoidal-shape over an arcuate region of 10 to 40 degrees about an axis of the self-locking fastener in a cross section perpendicular to the axis. In addition a region, in which a group of the lock portions are formed in an axial direction of the self-locking fastener, is such that when the self-locking fastener is screwed into a nut, a major part of the group of lock portions are screwed into threads of the nut.

Self-locking fastener

Growing community of inventors

Niwa-gun, Japan

Shigeki Matsunami