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公开(公告)号：US11084083B2
公开(公告)日：2021-08-10
申请号：US16472303
申请日：2017-12-28
申请人： KOBE STEEL, LTD.
发明人： Yasuhiro Maeda , Toru Hashimura , Ryohei Yukishige
摘要： In a joining method for members, a tube body having a center axis L, a wall surface body having a hole portion through which the tube body can be inserted, and an elastic body that can be inserted in the tube body are prepared. The tube body has an inner rib extending in a direction of the center axis so as to partition an inside thereof, and the inner rib has notches cut from a lower end of the inner rib in the direction of the center axis. Next, the tube body is inserted through the hole portion in the wall surface body, and the elastic body is inserted into internal spaces partitioned by the inner rib of the tube body. Furthermore, the elastic body is compressed in the direction of the center axis of the tube body and expanded outward in a radial direction with respect to the center axis, whereby an end of the tube body is expanded and deformed to be joined to the wall surface body by press-fitting.
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公开(公告)号：US10744552B2
公开(公告)日：2020-08-18
申请号：US16080515
申请日：2017-02-21
申请人： Kobe Steel, Ltd.
发明人： Toru Hashimura , Kenichi Watanabe , Junya Naitou , Yasuhiro Maeda
摘要： The joining method for members according to the present invention includes: providing an aluminum component including an insertion hole provided with a rib in at least part of an edge part, and a hollow steel pipe; inserting the steel pipe into the insertion hole of the aluminum component; and expanding and deforming the steel pipe to join the steel pipe to the aluminum component by press-fitting.
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公开(公告)号：US12104719B2
公开(公告)日：2024-10-01
申请号：US17286924
申请日：2019-12-04
申请人： KOBE STEEL, LTD.
发明人： Yasuhiro Maeda , Toru Hashimura , Taiki Yamakawa
IPC分类号： F16L13/02 , F16L13/007 , F16L13/14
CPC分类号： F16L13/147 , F16L13/007 , F16L13/02
摘要： The element joint is obtained by joining: a long pipe; a short pipe made of a quality of material having a strength equal to or higher than a strength of the long pipe; and a plate material made of a quality of material having a strength equal to or higher than a strength of the short pipe. In the element joint, at least one member of the long pipe and the short pipe includes a pipe-shaped portion, and the pipe-shaped portion of the one member is pipe-expanded and joined to the other member by press-fitting. The short pipe and the plate material are welded to each other.
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公开(公告)号：US12083570B2
公开(公告)日：2024-09-10
申请号：US18189093
申请日：2023-03-23
申请人： KOBE STEEL, LTD.
发明人： Yasuhiro Maeda , Toru Hashimura , Taiki Yamakawa
CPC分类号： B21C23/085 , B21C26/00
摘要： An extruded material includes a peripheral wall having a closed loop-shaped cross-section and defining a hollow, and a middle rib connected to an inner peripheral surface of the peripheral wall and dividing the hollow. The extruded material is provided with a corrected portion set at a predetermined portion in a longitudinal direction and subjected to correction processing, and an uncorrected portion not subjected to the correction processing. The peripheral wall is expanded outward with respect to an original shape of the uncorrected portion in the corrected portion. While the middle rib is curved with respect to an imaginary straight line connecting connecting portions connected with the peripheral wall at both end portions of the middle rib in the uncorrected portion, the middle rib has a smaller degree of curvature than the original shape of the uncorrected portion in the corrected portion.
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公开(公告)号：US11433450B2
公开(公告)日：2022-09-06
申请号：US16955711
申请日：2018-11-06
申请人： KOBE STEEL, LTD.
摘要： A joined body includes: a first member having a pipe shape; and a second member including a wall portion having a plate shape, and a flange portion having a cylinder shape provided with an insertion hole through which the first member is inserted. In a state where the first member is inserted into the insertion hole of the flange portion of the second member, the first member and the second member are joined with the first member pipe-expanded. A material of the second member is larger than a material of the first member in a spring-back amount.
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公开(公告)号：US10974673B2
公开(公告)日：2021-04-13
申请号：US16495299
申请日：2018-03-13
申请人： KOBE STEEL, LTD.
发明人： Toru Hashimura , Ryohei Yukishige , Yasuhiro Maeda
摘要： A vehicular structure includes: a first member formed in a tubular shape and having protrusions on an outer periphery thereof; and a second member formed in a tubular shape and having a locking wall with a hole in which the first member is inserted. The first member is joined to the second member such that a portion of the first member that is inserted in the hole of the second member is expanded, and the protrusions are in contact with the locking wall of the second member.
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公开(公告)号：US10906079B2
公开(公告)日：2021-02-02
申请号：US16090822
申请日：2017-04-05
申请人： Kobe Steel, Ltd.
发明人： Yasuhiro Maeda , Toru Hashimura , Ryohei Yukishige
摘要： In a method for manufacturing a composite cross-section member, a continuous steel sheet is fed to a manufacturing device and bent and roll-formed into a predetermined cross-sectional shape, a discontinuous aluminum core is locally inserted at an arbitrary stage of the roll forming, and the steel sheet is bent such that the core and the steel sheet are integrated, to obtain a composite cross-section member.
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公开(公告)号：US12109605B2
公开(公告)日：2024-10-08
申请号：US17289149
申请日：2019-10-10
申请人： Kobe Steel, Ltd.
发明人： Taiki Yamakawa , Toru Hashimura , Yasuhiro Maeda
CPC分类号： B21D39/044 , B21D39/20 , B21D41/02 , B21D53/88 , B60R19/24
摘要： A bead forming method includes the steps of preparing a bumper stay having a partition wall that partitions an internal space and extends in a longitudinal direction, an elastic body that can be inserted into the bumper stay, and a pusher that presses the elastic body; inserting the elastic body into the bumper stay and arranging the elastic body in the bumper stay so as not to come into contact with the partition wall; and forming a buckling bead by compressing the elastic body in the longitudinal direction of the bumper stay by the pusher to expand the elastic body outward in a radial direction without coming into contact with the partition wall, thereby bulging a part of an outer wall of the bumper stay outward in the radial direction without deforming the partition wall.
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公开(公告)号：US11969777B2
公开(公告)日：2024-04-30
申请号：US17754004
申请日：2020-10-14
申请人： KOBE STEEL, LTD.
发明人： Taiki Yamakawa , Toru Hashimura , Yasuhiro Maeda
CPC分类号： B21D39/04 , B21D39/206 , B21D53/88 , B29C65/70
摘要： A structure includes: a first member made of metal having a tubular shape, and having a through-insertion hole; a second member made of resin and joined to the first member; and a third member made of metal having a tubular shape, and inserted through inside the first member. The third member is tube-expanded toward the first member and joined to the first member by press-fitting.
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公开(公告)号：US11472359B2
公开(公告)日：2022-10-18
申请号：US16977456
申请日：2019-02-04
申请人： KOBE STEEL, LTD.
发明人： Taiki Yamakawa , Toru Hashimura , Yasuhiro Maeda
摘要： A structural member for a vehicle includes bumper stays having a tubular configuration and fixed to each of front ends of a pair of front side members included in a vehicle, and a tubular bumper beam provided with holes and into which the bumper stay is inserted. Each of the bumper stays includes a first shock absorbing portion and a second shock absorbing portion provided adjacent to the first shock absorbing portion on an outer side.
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