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公开(公告)号：US20180117983A1
公开(公告)日：2018-05-03
申请号：US15560892
申请日：2016-03-16
Applicant: NHK Spring Co., Ltd.
Inventor： Yutaka Wakabayashi , Ken Takahashi , Masato Sugawara , Hideki Okada
IPC: B60G21/055 , C21D9/08
CPC classification number: B60G21/055 , B21D7/165 , B21D53/88 , B60G2206/012 , B60G2206/427 , B60G2206/724 , B60G2206/8402 , C21D9/08 , C21D9/085
Abstract: A hollow stabilizer has a tubular shape and is provided with a torsion section that is provided to a vehicle and that extends in the vehicle width direction; an arm section that extends in the front-back direction of the vehicle; and bent sections that connect the torsion section and the arm section. The hardness of the outer surface of the bent inner sides of the bent sections of the hollow stabilizer is 70% or more with respect to the hardness of the outer surface of the arm section.
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公开(公告)号：US10442269B2
公开(公告)日：2019-10-15
申请号：US15560892
申请日：2016-03-16
Applicant: NHK Spring Co., Ltd.
Inventor： Yutaka Wakabayashi , Ken Takahashi , Masato Sugawara , Hideki Okada
IPC: B60G21/055 , B21D53/88 , C21D9/08 , B21D7/16
Abstract: A hollow stabilizer has a tubular shape and is provided with a torsion section that is provided to a vehicle and that extends in the vehicle width direction; an arm section that extends in the front-back direction of the vehicle; and bent sections that connect the torsion section and the arm section. The hardness of the outer surface of the bent inner sides of the bent sections of the hollow stabilizer is 70% or more with respect to the hardness of the outer surface of the arm section.
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Patent Agency Ranking
公开(公告)号：US11827068B2
公开(公告)日：2023-11-28
申请号：US17117763
申请日：2020-12-10
Applicant: NHK SPRING Co., Ltd.
Inventor： Masato Sugawara , Shogo Mori
IPC: B60G21/055 , B21K7/12 , B21K21/12
CPC classification number: B60G21/0551 , B21K7/12 , B21K21/12 , B60G2202/135 , B60G2206/427 , B60G2206/81022
Abstract: A stabilizer comprises a main bar that is elastically deformable, a pair of connecting plates respectively configured to be connected to a pair of left and right suspension apparatuses, and transition sections connecting both end portions of the main bar and the pair of connecting plates, a size of one transition section of the transition sections in a plate thickness direction of one connecting plate of the connecting plates gradually decreasing from the main bar toward the connecting plate, wherein the minimum value of the Vickers hardness of the transition section is 200 HV or more.
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公开(公告)号：US11786960B2
公开(公告)日：2023-10-17
申请号：US17439583
申请日：2020-03-12
Applicant: NHK SPRING Co., Ltd.
Inventor： Hiroshi Mizukami , Masato Inaba , Masato Sugawara , Michiya Masuda
CPC classification number: B21K1/06 , B60G21/026
Abstract: A method for manufacturing a stabilizer, the stabilizer including a main body bar that is elastically deformable, and a pair of connecting plates that are separately connected to a pair of left and right suspension devices, the method including a forging step of forming the connecting plate by forging both end portions of a material tube, in which in the forging step, both end portions of the material tube are crushed in a radial direction to be formed into the connecting plate in a state where a sealing metal plate heated to a temperature equal to or higher than a melting point is disposed inside both end portions of the material tube heated to a temperature lower than the melting point.
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公开(公告)号：US11285776B2
公开(公告)日：2022-03-29
申请号：US16146269
申请日：2018-09-28
Applicant: NHK SPRING CO., LTD.
Inventor： Akira Tange , Masato Sugawara , Yutaka Wakabayashi
IPC: B60G21/055 , F16F1/02 , F16F1/14 , B23P23/04
Abstract: A terminal sealed portion is formed on an end portion of a hollow rod made of steel. An enclosed space is formed on an inner side of the hollow rod. At an end of the enclosed space, a terminal gap is formed. A volatile powdered rust inhibitor is supplied in the enclosed space. As the volatile powdered rust inhibitor is vaporized, the enclosed space is turned into a rust-inhibiting atmosphere. As the vaporized component of the volatile powdered rust inhibitor is adsorbed to an inner surface of the enclosed space, an inner surface rust-inhibiting film is formed. The vaporized component also enters inside the terminal gap, and forms a terminal rust-inhibiting film.
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公开(公告)号：US10415110B2
公开(公告)日：2019-09-17
申请号：US15560273
申请日：2016-03-16
Applicant: NHK Spring Co., Ltd.
Inventor： Yutaka Wakabayashi , Ken Takahashi , Masato Sugawara , Hideki Okada
Abstract: A method of manufacturing a hollow stabilizer includes a forming step of subjecting an element pipe to a bending process, to form a product shape including bent portions, and a quenching step of quenching the element pipe subjected to the bending process. In the quenching step, a cooling process is performed by immersing the element pipe made of steel in coolant and by spraying the coolant to an outer surface of the bent portion.
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公开(公告)号：US20180073096A1
公开(公告)日：2018-03-15
申请号：US15560273
申请日：2016-03-16
Applicant: NHK Spring Co., Ltd.
Inventor： Yutaka Wakabayashi , Ken Takahashi , Masato Sugawara , Hideki Okada
CPC classification number: C21D9/08 , B21D7/00 , B21D7/165 , B21D53/88 , B60G21/055 , B60G2206/427 , B60G2206/724 , B60G2206/8103 , B60G2206/8402 , B60G2206/8403 , C21D1/60 , C23C8/46
Abstract: A method of manufacturing a hollow stabilizer includes a forming step of subjecting an element pipe to a bending process, to form a product shape including bent portions, and a quenching step of quenching the element pipe subjected to the bending process. In the quenching step, a cooling process is performed by immersing the element pipe made of steel in coolant and by spraying the coolant to an outer surface of the bent portion.
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