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公开(公告)号：US20220097774A1
公开(公告)日：2022-03-31
申请号：US17422091
申请日：2019-12-27
Applicant: NIPPON STEEL CORPORATION
Inventor： Tohru YOSHIDA , Koichi HAMADA , Takeshi KAWACHI , Atsuo KOGA , Takuya OISHI
Abstract: In an automobile hood, sufficient panel rigidity and dent resistance of a panel are secured while achieving weight reduction. An automobile hood having panel, reinforcing member and joint that joins the panel and the reinforcing member such that the reinforcing member includes a structure formed from a plurality of units having hexagonal annular shape disposed in a close-packed arrangement. Floor of the unit has an annular end part. All of annular end part is located between first circle and second circle wherein first circle is inscribed within a first ridge line overlapping with an outer end part of the floor. Second circle is concentric with first circle and has a radius that is 60% of a radius of the first circle. Width of upper face of floor is 2 mm or more over the entire area of the annular end part in the circumferential direction of the annular end part.
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公开(公告)号：US20200030868A1
公开(公告)日：2020-01-30
申请号：US16498364
申请日：2018-03-20
Applicant: NIPPON STEEL CORPORATION
Inventor： Takashi YASUTOMI , Shigeru YONEMURA , Tohru YOSHIDA
IPC: B21D28/34
Abstract: A shearing method of a plate-shaped workpiece for applying a shear force in a thickness direction of the plate-shaped workpiece includes: a step for starting applying the shear force on the workpiece with a clearance between action points in a surface direction orthogonal to the thickness direction of the workpiece; a step for applying the shear force after the start of applying the shear force until a fractured surface is created in the workpiece; and a step for increasing the clearance depending on a deformation of the workpiece in the thickness direction after starting applying the shear force until the fractured surface is created in the workpiece.
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公开(公告)号：US20230112540A1
公开(公告)日：2023-04-13
申请号：US17911308
申请日：2021-03-29
Applicant: NIPPON STEEL CORPORATION
Inventor： Ryuichi NISHIMURA , Koichi HAMADA , Yasunori SAWA , Tohru YOSHIDA
Abstract: An automobile hood 1 has an inner panel 2, an outer panel 3, and a plurality of linear sealer regions A in which joints 21 are arranged. A region which includes the linear sealer region A and in which both ends in a longitudinal direction L of the linear sealer region A reach the outer circumferential edge of the inner panel 2 is defined as an end-to-end region B. Each of three longest linear sealer regions A2, A4 and A3 among the plurality of linear sealer regions A is a length that is 40% or more of the length of an end-to-end region B2, B4 or B3 to which the linear sealer regions A2, A4 or A3 belongs, respectively. These three end-to-end regions B2, B4 and B3 do not intersect with each other within a region surrounded by the outer circumferential edge of the inner panel 2.
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公开(公告)号：US20220097773A1
公开(公告)日：2022-03-31
申请号：US17422056
申请日：2019-12-27
Applicant: NIPPON STEEL CORPORATION
Inventor： Tohru YOSHIDA , Koichi HAMADA , Takeshi KAWACHI , Atsuo KOGA , Takuya OISHI
Abstract: In an automobile hood, sufficient panel rigidity and dent resistance are secured while achieving weight reduction. Automobile hood 1 has a panel 2, a reinforcing member 3, and a joint 4 that joins the panel 2 and the reinforcing member 3. The reinforcing member 3 includes a structure formed from a plurality of units 7 having a hexagonal annular shape disposed in a close-packed arrangement. Unit 7 has a floor 11, inclined wall 12 and top plate 13. The floor 11 is adjacent to the panel 2. Top plate 13 and panel 2 are separated from each other. The inclined wall 12 is arranged between the floor 11 and the top plate 13. A hexagonal annular first ridge line 31 of the unit 7 is located between the inclined wall 12 and the floor 11. A length L1 of one side of the first ridge line 31 is 40-75 mm.
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公开(公告)号：US20220097497A1
公开(公告)日：2022-03-31
申请号：US17422318
申请日：2020-01-15
Applicant: NIPPON STEEL CORPORATION
Inventor： Toshiya SUZUKI , Satoshi HIROSE , Tohru YOSHIDA , Yoshiaki NAKAZAWA
IPC: B60J5/04
Abstract: Provided is an automobile door (600) including: a first impact absorbing member (122) that traverses the automobile door (600) so as to extend between both end portion regions in a vehicle height direction; a second impact absorbing member (124) that traverses the automobile door (600) so as to extend between both end portion regions in a vehicle length direction; an exterior material (110); and a belt line reinforcement (300), in which bending rigidity in a vehicle width direction of a cross section perpendicular to an extending direction of the belt line reinforcement (300) at a support portion is larger than bending rigidity in the vehicle width direction of a cross section perpendicular to an extending direction of the first impact absorbing member (122) at an intersection portion.
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Patent Agency Ranking
公开(公告)号：US20210122216A1
公开(公告)日：2021-04-29
申请号：US16962794
申请日：2019-01-28
Applicant: NIPPON STEEL CORPORATION
Inventor： Toshiya SUZUKI , Yoshiaki NAKAZAWA , Tasuku ZENIYA , Tohru YOSHIDA
IPC: B60J5/04
Abstract: The present invention provides a shock-absorbing member including: an exterior material 110 for an automobile; a first reinforcing member 122 that is disposed adjacent to the exterior material 110 and whose cross section orthogonal to the extending direction has a height, in the direction orthogonal to the exterior material 110, that is greater than the width in the S direction along the exterior material 110; a second reinforcing member 124 that is disposed adjacent to the exterior material 110 and whose cross section orthogonal to the extending direction has a height, in the direction orthogonal to the exterior material 110, that is greater than the width in the direction along the exterior material 110; an intersecting part where the first reinforcing member 122 and the second reinforcing member intersect and overlap; and a joint that joins the first reinforcing member 122 and the second reinforcing member 124 at the intersection.
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公开(公告)号：US20230063824A1
公开(公告)日：2023-03-02
申请号：US17795492
申请日：2021-03-19
Applicant: NIPPON STEEL CORPORATION
Inventor： Naruhiko NOMURA , Toshiya SUZUKI , Kenta UENISHI , Tohru YOSHIDA
Abstract: A die includes a die body and a removable shell. The die body includes a supply flow channel formed inside the die body. One end of the supply flow channel opens at the surface of the die body. The supply flow channel is to be supplied with a fluid for temperature adjustment. The removable shell is mounted removably to the surface of the die body. The removable shell includes an outer surface that constitutes at least a part of the forming surface of the die. A temperature adjustment space is provided in the surface of the die body or in the removable shell. The temperature adjustment space is in communication with the supply flow channel. The removable shell is divided into a plurality of shell pieces. The plurality of shell pieces are arranged in a direction intersecting the longitudinal direction of the die on the surface of the die body.
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公开(公告)号：US20220126926A1
公开(公告)日：2022-04-28
申请号：US17422129
申请日：2019-12-27
Applicant: NIPPON STEEL CORPORATION
Inventor： Ryuichi NISHIMURA , Koichi HAMADA , Atsuo KOGA , Takeshi KAWACHI , Yasunori SAWA , Tohru YOSHIDA
IPC: B62D25/12
Abstract: In an automobile inner panel and an automobile panel that includes the automobile inner panel, panel rigidity of the panel is secured while achieving a weight reduction. An automobile inner panel 2 has a plurality of sub-units 10 that each include a flange 11, an inclined wall 12 continuous with the flange 11, and a bottom portion 13 continuous with inclined wall 12 and separated from the flange 11. The bottom portions 13 and 13 of the sub-units 10 and 10 which are adjacent to each other are butted against each other and are directly continuous with each other. A maximum value of a distance D1 between two of the flanges 11 and 11 of two of the sub-units 10 and 10 in which the bottom portions 13 are arranged separated from each other and which are adjacent to each other is 250 mm or less.
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公开(公告)号：US20240033804A1
公开(公告)日：2024-02-01
申请号：US18484254
申请日：2023-10-10
Applicant: NIPPON STEEL CORPORATION
Inventor： Takashi YASUTOMI , Shigeru YONEMURA , Tohru YOSHIDA
CPC classification number: B21D28/34 , B23D15/04 , B23D35/005 , B26D1/01 , B26D7/06 , B26D7/2628 , B26D2001/0066
Abstract: A shearing method of a plate-shaped workpiece for applying a shear force in a thickness direction of the plate-shaped workpiece includes: a step for starting applying the shear force on the workpiece with a clearance between action points in a surface direction orthogonal to the thickness direction of the workpiece; a step for applying the shear force after the start of applying the shear force until a fractured surface is created in the workpiece; and a step for increasing the clearance depending on a deformation of the workpiece in the thickness direction after starting applying the shear force until the fractured surface is created in the workpiece.
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公开(公告)号：US20230150006A1
公开(公告)日：2023-05-18
申请号：US17795390
申请日：2021-03-19
Applicant: NIPPON STEEL CORPORATION
Inventor： Naruhiko NOMURA , Toshiya SUZUKI , Kenta UENISHI , Tohru YOSHIDA
Abstract: The die includes a die base, a die body, and an opening/closing member. In the die base, a storage portion for storing refrigerant is formed. The die body includes a mounting surface, a forming surface, and a plurality of flow channels. The mounting surface is located on the storage portion side of the die base. The forming surface is located on the opposite side of the mounting surface. The flow channels pass through the die body from the mounting surface to the forming surface. The opening/closing member is disposed between the die base and the die body. The opening/closing member includes a plurality of through holes corresponding to the plurality of flow channels. The opening/closing member is configured to be movable with respect to the die base and the die body such that each of the through holes brings the corresponding flow channel and the storage portion into communication.
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