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公开(公告)号：US20190210089A1
公开(公告)日：2019-07-11
申请号：US16352740
申请日：2019-03-13
Inventor： Yasuhiro MAEDA , Jiro IWAYA , Junya NAITOU , Hideto KATSUMA
CPC classification number: B21D39/06 , B21D39/032 , B21D39/20 , B21D39/206
Abstract: In the present invention, a method for joining members involves preparing a steel component having a bottom wall in which a hole is provided, and a hollow aluminum pipe. The aluminum pipe is slipped through the hole in the steel component and passed through the bottom wall, rubber is inserted into the interior of the aluminum pipe, and the rubber is compressed in the direction of the axis (L) of the aluminum pipe and induced to distend towards the outside from the inside. As a result of the foregoing, at least a section of the aluminum pipe slipped through the hole is induced to undergo expansion and is joined by clinching to the bottom wall. This method for joining members reduces the load on the members, improves the joint strength, and enables two members to be joined at reduced cost.
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公开(公告)号：US20180015527A1
公开(公告)日：2018-01-18
申请号：US15546021
申请日：2016-01-04
Inventor： Yasuhiro MAEDA , Jiro IWAYA , Junya NAITOU , Hideto KATSUMA
CPC classification number: B21D39/06 , B21D39/032 , B21D39/20 , B21D39/206
Abstract: In the present invention, a method for joining members involves preparing a steel component having a bottom wall in which a hole is provided, and a hollow aluminum pipe. The aluminum pipe is slipped through the hole in the steel component and passed through the bottom wall, rubber is inserted into the interior of the aluminum pipe, and the rubber is compressed in the direction of the axis (L) of the aluminum pipe and induced to distend towards the outside from the inside. As a result of the foregoing, at least a section of the aluminum pipe slipped through the hole is induced to undergo expansion and is joined by clinching to the bottom wall. This method for joining members reduces the load on the members, improves the joint strength, and enables two members to be joined at reduced cost.
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公开(公告)号：US20180272478A1
公开(公告)日：2018-09-27
申请号：US15763418
申请日：2016-08-22
Inventor： Yasuhiro MAEDA , Jiro IWAYA , Toru HASHIMURA , Junya NAITOU , Hideto KATSUMA
CPC classification number: B23P11/005 , B21D37/08 , B21D39/04 , B21D39/06 , B21D39/206
Abstract: A method for joining members of the present invention is as follows: a second member is inserted through a hole part of a first member; a guide shaft is inserted through a through hole of rubber; the rubber with the guide shaft inserted is inserted into the second member; and a drive mechanism relatively moves pushers and toward each other to compress the rubber in the extending direction of the guide shaft so that the rubber is expanded outward from inside to expand and deform at least a portion of the second member inserted into the hole part, thereby joining the second member to the first member.
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公开(公告)号：US20180272414A1
公开(公告)日：2018-09-27
申请号：US15763403
申请日：2016-08-22
Inventor： Yasuhiro MAEDA , Toru HASHIMURA , Junya NAITOU , Hideto KATSUMA
Abstract: In a method for joining bumper members, a bumper reinforcement including a rear inclined wall provided with a hole, and a bumper stay in a hollow shape are prepared. The method for joining bumper members includes the steps of: inserting the bumper stay through the hole of the bumper reinforcement to pass through the rear inclined wall; inserting rubber into the bumper stay; and compressing the rubber in a direction of an axis L of the bumper stay to expand the rubber outward from inside to expand and deform at least a portion of the bumper stay inserted into the hole, thereby joining the bumper stay to the rear inclined wall by press-fitting.
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Patent Agency Ranking
公开(公告)号：US20190226048A1
公开(公告)日：2019-07-25
申请号：US16335067
申请日：2017-09-13
Inventor： Takayuki KIMURA , Reiichi SUZUKI , Hideto KATSUMA , Kenichi WATANABE , Liang CHEN
IPC: C21D9/50 , C22C38/58 , C22C38/54 , C22C38/50 , C22C38/44 , C22C38/30 , C22C38/06 , C22C38/02 , C22C38/00 , C21D6/00 , B23K9/04 , B23K31/00 , B23K35/30
Abstract: Disclosed is a method for producing a steel part, which includes the steps of: preparing a built-up steel sheet including a steel sheet 20 including: C: 0.15 to 0.5% by mass, Si: 0.10 to 3% by mass, Mn: 0.5 to 5% by mass, P: 0.05% by mass or less (excluding 0%), S: 0.05% by mass or less (excluding 0%), Al: 0.01 to 1% by mass, B: 0.0002 to 0.01% by mass, Ti: 0.005 to (3.4[N]+0.1) % by mass (in which [N] represents a content of N (% by mass)), and N: 0.001 to 0.01% by mass, with the balance being iron and inevitable impurities, and one or more built-up portions 30 provided on the steel sheet 20; hot-forming the built-up steel sheet at a temperature of an Ac3 point or higher of the steel sheet 20; and cooling the hot-formed built-up steel sheet to a temperature of an Ms point or lower of the steel sheet such that an area ratio of martensite in the metal structure of the steel sheet 20 is 70% or more.
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公开(公告)号：US20180272411A1
公开(公告)日：2018-09-27
申请号：US15763415
申请日：2016-09-26
Inventor： Hideto KATSUMA , Jiro IWAYA , Junya NAITOU , Yasuhiro MAEDA , Toru HASHIMURA , Ryohei YUKISHIGE
CPC classification number: B21D47/04 , B21D22/04 , B21D22/22 , B21D24/04 , B23K11/11 , B23K11/115 , B23K11/20 , B23K11/34 , B23K2101/006 , B23K2101/045 , B23K2101/28 , B23K2103/04 , B23K2103/10 , B23K2103/20 , B62D21/11 , B62D21/155
Abstract: A method of bonding a first frame member and a second frame member includes: a protrusion formation step of forming a protrusion in a predetermined region of a plate by press fabrication; a stacking step of producing such a stack body of flanges and the plate that a leading end of the protrusion of the plate contacts with the flange and the flange is disposed between the flange and the plate; and a welding step of welding the protrusion to the flange by applying welding current between a pair of electrodes while the stack body is sandwiched between the pair of electrodes so that the protrusion is pressed against the flange.
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公开(公告)号：US20200269924A1
公开(公告)日：2020-08-27
申请号：US16328659
申请日：2017-09-05
Inventor： Kenichi WATANABE , Hideto KATSUMA , Liang CHEN
Abstract: A structure for a vehicle, includes: one side structure made of steel and located on one of outer and inner sides of a vehicle body; and another side structure located on the other of the outer and inner sides of the vehicle body and joined to the one side structure. The another side structure includes: a top portion made of an aluminum alloy and protruding toward the other side; wall portions respectively extending from both end parts of the top portion to the one side, each wall portion being made of an aluminum alloy; and a tab portion attached to an end part of the wall portion, extending toward an outside of the another side structure, and joined to the one side structure, the tab portion being made of steel.
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公开(公告)号：US20190210088A1
公开(公告)日：2019-07-11
申请号：US16352732
申请日：2019-03-13
Inventor： Yasuhiro MAEDA , Jiro IWAYA , Junya NAITOU , Hideto KATSUMA
CPC classification number: B21D39/06 , B21D39/032 , B21D39/20 , B21D39/206
Abstract: In the present invention, a method for joining members involves preparing a steel component having a bottom wall in which a hole is provided, and a hollow aluminum pipe. The aluminum pipe is slipped through the hole in the steel component and passed through the bottom wall, rubber is inserted into the interior of the aluminum pipe, and the rubber is compressed in the direction of the axis (L) of the aluminum pipe and induced to distend towards the outside from the inside. As a result of the foregoing, at least a section of the aluminum pipe slipped through the hole is induced to undergo expansion and is joined by clinching to the bottom wall. This method for joining members reduces the load on the members, improves the joint strength, and enables two members to be joined at reduced cost.
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公开(公告)号：US20180306221A1
公开(公告)日：2018-10-25
申请号：US15766276
申请日：2016-10-13
Inventor： Toru HASHIMURA , Hideto KATSUMA , Yasuhiro MAEDA , Ryohei YUKISHIGE
CPC classification number: F16B5/0096 , B21D39/03 , B21D39/06 , B21D39/20 , B21D47/02 , B21D53/88 , B62D21/02 , B62D27/023
Abstract: A side member (example of second member) having a hollow shape is inserted into holes formed in a cross member (example of first member) (member insertion step). The cross member and the side member are joined by caulking by expanding an insertion portion of the side member from the inside of the insertion portion (caulked junction step). The insertion portion of the side member is a portion inserted into the cross member.
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