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公开(公告)号：US10807137B2
公开(公告)日：2020-10-20
申请号：US15544054
申请日：2016-01-25
摘要： A method for producing a press-formed product that includes a pair of flat sections and a bend section that connects the flat sections, in which a bending radius of the bend section is R2 and an interior angle formed by the pair of flat sections is θ2, includes the steps bellow. In the first forming step, an intermediate formed product including a bend section in which a bending radius is R1 and an interior angle is θ1 is formed. In the second forming step, a portion of a bend section of the intermediate formed product is formed into the bend section of the press-formed product. R1, θ1, R2 and θ2 satisfy the conditions of Formulae (1) to (3) below: 1.05
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公开(公告)号：US10577028B2
公开(公告)日：2020-03-03
申请号：US16075078
申请日：2017-02-17
发明人： Kenichiro Otsuka
摘要： Provided is an automobile member including a hat-shaped first member that has a first flange, a second flange, a first wall portion erected from the first flange, a second wall portion erected from the second flange, and a web connecting the first and second wall portions to each other; a second member that is spot-joined to the first and second flanges; a first joining plate that is joined to inner wall surfaces of the first wall portion and the second member; and a second joining plate that is joined to inner wall surfaces of the second wall portion and the second member.
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公开(公告)号：US10435081B2
公开(公告)日：2019-10-08
申请号：US15502435
申请日：2015-08-28
摘要： A joining structure of the invention includes a first metal sheet and a pair of second metal sheets. Each of the pair of second metal sheets is overlapped on the first metal sheet in a state where an end surface of one of the second metal sheets and an end surface of the other second metal sheet face each other, and the end surfaces that face each other are integrally joined to the first metal sheet by means of a single mass of melted metal.
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公开(公告)号：US10023238B2
公开(公告)日：2018-07-17
申请号：US15111488
申请日：2015-02-03
摘要： A front pillar lower outer includes a bent portion, and a first region and a second region, and is a skeletal component for automobile that is assumed to receive a collision load along the extending direction of the first region. The outer is constituted by attaching a first member that is arranged on a first region side, and a second member that is arranged on a second region side. An attachment line of the both members is arranged in a predetermined zone between a first boundary and a second boundary. The plate thickness of the first member is larger than the plate thickness of the second member.
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公开(公告)号：US10022764B2
公开(公告)日：2018-07-17
申请号：US14765762
申请日：2014-03-20
摘要： In a press forming step of obtaining, from a blank of high-tensile strength steel sheet of 390 MPa or more, a press-formed product with a shape of cross section having a groove bottom part, ridge line parts, and vertical wall parts. An outward flange including parts along the ridge line parts is formed at an end part in a longitudinal direction. Forming parts to the ridge line parts is started by creating a region positioned at an end portion, in a longitudinal direction, of a part to be formed to the groove bottom part of the blank, which is separated from a punch top part. At that time or thereafter, the region is made to approach the punch top part. When forming the ridge line parts, forming of the parts of the outward flange are conducted, the parts are formed from the start to the middle of the press forming, to reduce or prevent an occurrence of stretch flange fracture and a generation of wrinkling
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公开(公告)号：US09902435B2
公开(公告)日：2018-02-27
申请号：US14913819
申请日：2014-09-30
CPC分类号： B62D25/20 , B62D27/02 , B62D27/026 , B62D29/007
摘要： Provided is a structural member for an automotive body, which is excellent in load transfer capability and rigidity by effectively enhancing energy absorption efficiency provided by disposing a groove in the structural member having a substantially gutter-shaped cross section and a groove in the top plate.The structural member for an automotive body, the structural member consisting of a press-formed product made of a steel sheet, the press-formed product extending in a predetermined direction, including a top plate, a ridge continuing to the top plate, and a vertical wall continuing to the ridge, and having a substantially gutter-shaped cross section intersecting the predetermined direction, includes at least one groove formed in the top plate, and extending in the predetermined direction, and an outward flange formed at least in a region of the ridge in an end in the predetermined direction. The groove having a depth set according to a width of the groove and a sheet thickness of the steel sheet.
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公开(公告)号：US11027781B2
公开(公告)日：2021-06-08
申请号：US16315959
申请日：2017-07-13
发明人： Kenichiro Otsuka
IPC分类号： B60R19/34 , B62D25/04 , B21D22/02 , B21D47/01 , B21D53/88 , B60R19/02 , B62D21/15 , B62D25/06 , B62D25/20 , B21D37/08 , B21D22/20 , B21D24/00 , B21D22/26
摘要： The present invention provides a hot-stamping formed article which is long and formed of a single steel sheet, the hot-stamping formed article including: two standing wall portions; a top sheet portion adjacent to the two standing wall portions; and a protrusion portion including an overlapping portion in which a portion of the steel sheet extending from at least one standing wall portion of the two standing wall portions and a portion of the steel sheet extending from the top sheet portion overlap, in which an angle between the top sheet portion and the protrusion portion in a case where a plane perpendicular to a longitudinal direction of the hot-stamping formed article is viewed in a cross section is larger than 90°.
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公开(公告)号：US10913102B2
公开(公告)日：2021-02-09
申请号：US16308970
申请日：2017-06-16
发明人： Kenichiro Otsuka , Takashi Miyagi
IPC分类号： B21D47/01 , B62D25/04 , B21D22/26 , B62D25/00 , B21D24/00 , B62D25/20 , B62D21/00 , B62D29/00 , B60R19/04 , B21D22/02 , B21D53/88 , B60R19/18 , B62D25/02
摘要： A drawn body for a vehicle structural member has a tensile strength of 980 MPa or more, radii of curvature of two first convex ridge portions, a second convex ridge portion, and a concave ridge portion are each 30 mm or less, a corner radius of a corner wall is 30 mm or less, and a forming depth which is a separation distance between a top sheet portion and an outwardly-extending flange is 40 mm or more.
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公开(公告)号：US10758959B2
公开(公告)日：2020-09-01
申请号：US15756668
申请日：2016-09-14
IPC分类号： B21D22/26 , B60J5/04 , B60J5/00 , B21D22/22 , B21D22/20 , B21D35/00 , B21D19/08 , B21D24/04 , B21D53/88
摘要： A manufacturing method includes a preparing step, an intermediate pressing step, a heating step, and a hot stamping step. In the preparing step, a blank is prepared. In the intermediate pressing step, press working is applied to the blank to produce an intermediate formed product. In the heating step, the intermediate formed product is heated. In the hot stamping step, press working is applied to the intermediate formed product to produce a panel-like formed product. In the hot stamping step, a machine including a first die, a second die, a punch, and a blank holder is used. While the intermediate formed product is pinched between the first die and the punch, the second die and the blank holder are moved relative to the first die and the punch, and thereby, the panel-like formed product is produced.
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公开(公告)号：US10695815B2
公开(公告)日：2020-06-30
申请号：US15575824
申请日：2016-05-10
发明人： Masahiro Saito , Yoshiaki Nakazawa , Kenichiro Otsuka , Yasuhiro Ito , Masanori Yasuyama , Masatoshi Tokunaga
摘要： A press-formed product is shaped by press-working from a tailored blank made up of a plurality of metal sheets butt-welded together. The press-formed product includes a flange section, and an arc-shaped area which is an area of the flange section which is formed by stretch flange deformation, and in which an inner peripheral edge is open. A weld line of the tailored blank intersects with the inner peripheral edge and an outer peripheral edge of the arc-shaped area. An angle θ formed by the weld line and a maximum principal strain direction of the stretch flange deformation is 17 to 84°.
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