Yoshihaya
Yoshihaya Imamura, Fujisawa-Shi JP
Patent application number | Description | Published |
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20100102582 | AXIAL MEMBER WITH FLANGE, CONNECTION MEMBER AND PRODUCTION METHODS THEREOF - A target tubular member with flange, such as a bumper stay, has a flange having an outer diameter larger than the diameter of an axial section and is formed by electromagnetic forming without excessive expansion. The tubular member with flange includes an axial member made of a tubular aluminum alloy extrudate and a flange member joined to an end of the axial member. The axial member has an end flange being integrated at its end and having an area smaller than that of the flange member. The flange member has a hole, and a cylindrical hole flange at the edge of the hole. The axial member fits in the hole of the flange member, the end flange is in intimate contact with the flange member, and the outer periphery of a small-diameter portion of the axial member is in intimate contact with the inner periphery of the hole flange. The hole flange is held between the end flange and a protrusion. The tubular member with flange may be produced by inserting an untreated pipe into the hole of the flange member and expanding the untreated pipe by electromagnetic forming. | 04-29-2010 |
20100134227 | Electromagnetic pipe expanding inductor and method for manufacturing the same - Provided is an electromagnetic pipe expanding inductor in which the formation of voids during resin impregnation is suppressed, and electromagnetic reaction forces acting on the conductor periphery and on the interface between the shaft portion and the center-side fiber layer is diminished, and thereby durability is improved and the life of the inductor is prolonged. A glass cloth tape ( | 06-03-2010 |
20130320685 | AUTOMOBILE BUMPER STRUCTURE - A front stay member is inserted into a through-hole in a bumper reinforcement. A first end of a middle stay member is fitted onto a portion of the front stay member that protrudes from the through-hole until the first end of the middle stay member comes into contact with the bumper reinforcement. A rear stay member is inserted into a second end of the middle stay member until the second end of the middle stay member comes into contact with the step on the rear stay member. A magnetic field shaper is disposed so as to face portions of an outer peripheral surface of the middle stay member that respectively overlap the front stay member and the rear stay member, and the middle stay member is clinched onto the front and rear stay members by applying an electromagnetic force to the magnetic field shaper. | 12-05-2013 |
20140234018 | CONNECTING MEMBER OF STRUCTURE - A bracket includes a cylindrical portion and a plate-shaped portion that are integrally formed. The cylindrical portion is provided at one end side of a blank along one direction and is provided with a slit extending over an entire length of the cylindrical portion in the one direction as a result of forming a portion at the one end side of the blank along the one direction into a cylindrical shape extending in the one direction. The plate-shaped portion is provided at the other end side of the blank along the one direction. The cylindrical portion of the bracket is inserted in the cylindrical body member formed of an aluminum alloy material, and the body member and the cylindrical portion are clinched by electromagnetic tube compression. | 08-21-2014 |
Yoshihaya Imamura, Shimonoseki-Shi JP
Patent application number | Description | Published |
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20090294410 | METHOD FOR JOINING DISSIMILAR METALS OF STEEL PRODUCT AND LIGHT METAL PRODUCT WITH EACH OTHER - There is provided method for joining dissimilar metals of a steel product and a light metal product with each other, wherein the light metal product and a rivet made of an iron-base metal are connected with each other beforehand in a previous process preceding spot welding, and subsequently, the rivet and the steel product are spot welded with each other. Then, a cavity for use in clinching the light metal product is formed, and upon the stem of the rivet is embedded into the light metal product to penetrate therethrough, light metal is caused to undergo plastic flow into the cavity of the rivet, for clinching the light metal product to be thereby clinched with the rivet whereupon spot welding for forming a weld nugget only within the scope of an interface between the stem of the rivet, and the steel product is carried out. Thus, the present invention can implement the spot welding between iron—iron similar metals, without a constraint on, and a problem with conditions applicable to the spot welding and a high joint strength can be obtained owing to the synergistic effect of the spot welding and connection by clinching of the aluminum alloy product with the iron-base rivet, added thereto. | 12-03-2009 |
Yoshihaya Imamura, Yamaguchi JP
Patent application number | Description | Published |
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20090243337 | FRAME WITH CLOSED CROSS-SECTION - There is provided a frame having closed cross-sections capable of preventing a welded joint of the frame from being turned in a wide open state, or being broken when an external force is applied to the frame at the time of vehicle collision, and so forth, and the frame is collapsed. The frame having closed cross-sections is provided with a body cylindrical in shape, wherein first side parts of a first frame member, in pairs, are welded to second side parts of a second frame member, in pairs, respectively, thereby forming a welded joint on both sides of the body, and respective end faces of each of the reinforcing plates, in the widthwise direction of the body, are butted against respective inner side faces of the side parts of the body, corresponding thereto. | 10-01-2009 |