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1. 发明授权

EP3418409B1 ALUMINUM ALLOY AND FASTENER MEMBER 有权
公开(公告)号：EP3418409B1
公开(公告)日：2020-04-01
申请号：EP17753285.0
申请日：2017-02-16
申请人： NHK Spring Co., Ltd. , Topura Co., Ltd.
发明人： KANEDA, Noriyoshi , SUZUKI, Takeshi , MIYAMOTO, Kouhei , HORIUCHI, Naoki
IPC分类号： C22C21/02 , C22C21/06 , F16B35/00 , F16B37/00 , F16B19/06 , C22F1/05 , C22C21/12 , C22F1/043 , C22F1/047 , C22F1/053

2. 发明授权

EP3121464B1 FASTENING MEMBER, AND ROD-SHAPED MEMBER FOR A FASTENING MEMBER 有权
公开(公告)号：EP3121464B1
公开(公告)日：2019-11-27
申请号：EP15764209.1
申请日：2015-03-20
申请人： NHK Spring Co., Ltd. , Topura Co., Ltd.
发明人： KAZAMA, Toshio , SUZUKI, Takeshi , MORI, Shigeto
IPC分类号： C22C21/06 , C22C21/10 , F16B33/00 , F16B33/06 , B32B15/01

3. 发明授权

EP2966186B1 STRENGTH MEMBER AND MANUFACTURING METHOD THEREFOR 有权转让
公开(公告)号：EP2966186B1
公开(公告)日：2019-10-16
申请号：EP14760929.1
申请日：2014-03-07
申请人： NHK Spring Co., Ltd.
发明人： KUROKAWA, Shimpei , SUZUKI, Takeshi , SHIBAIRI, Kosuke
IPC分类号： C22C38/00 , C21D7/06 , C21D7/10 , C21D9/02 , C22C38/34 , F16F1/02

4. 发明公开

EP3315811A1 ELASTIC MEMBER AND WIRE ROD FOR ELASTIC MEMBER 有权
标题翻译：弹性元件用弹性元件和电线杆
公开(公告)号：EP3315811A1
公开(公告)日：2018-05-02
申请号：EP16817914.1
申请日：2016-06-28
申请人： NHK Spring Co., Ltd.
发明人： KAZAMA, Toshio , TAKAMURA, Noritoshi , ISHIKAWA, Shigeki , SUZUKI, Takeshi
IPC分类号： F16F1/02 , C22C21/00 , F16F1/06 , F16F1/14
摘要： An elastic member according to the present invention is an elastic member formed of a wire having a cross section that is substantially circular, the cross section being orthogonal to a longitudinal direction, and the elastic member being expandable and contractible in a predetermined direction; and including: a first alloy portion that is made of an aluminum alloy having a tensile strength larger than 950 MPa and equal to or less than 1100 MPa at room temperature; and a second alloy portion configured to cover the first alloy portion, the second alloy portion having a thickness in a radial direction smaller than a radius of the first alloy portion, and being made of an aluminum alloy having a tensile strength of 100 MPa to 650 MPa at room temperature.
摘要翻译：本发明的弹性部件是由具有截面大致为圆形的线材形成的弹性部件，该截面与长度方向正交，并且该弹性部件能够向规定方向伸缩，并且包括：第一合金部分，其由在室温下具有大于950MPa且等于或小于1100MPa的拉伸强度的铝合金制成; 以及第二合金部分，其被配置为覆盖所述第一合金部分，所述第二合金部分在径向上的厚度小于所述第一合金部分的半径，并且由具有100MPa至650的抗拉强度的铝合金制成兆帕在室温下。

5. 发明公开

EP2682493A1 SPRING AND MANUFACTURING METHOD THEREOF 有权转让
标题翻译： FEDER UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP2682493A1
公开(公告)日：2014-01-08
申请号：EP12755633.0
申请日：2012-03-01
申请人： NHK Spring Co.,Ltd.
发明人： SUZUKI, Takeshi , ONO, Yoshiki , KUROKAWA, Shimpei
IPC分类号： C22C38/00 , B21F35/00 , C21D7/06 , C21D9/02 , C22C38/18 , F16F1/02 , F16F1/06
CPC分类号： F16F1/021 , B21F35/00 , C21D7/06 , C21D9/02 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/34 , F16F1/06 , Y10T29/49609
摘要： A spring with superior fatigue resistance and a production method therefor are provided by decreasing the material cost and simplifying the production process. There is provided with a spring comprising: a composition consisting of, by mass %, 0.5 to 0.7 % of C, 1.0 to 2.0 % of Si, 0.1 to 1.0 % of Mn, 0.1 to 1.0 % of Cr, not more than 0.035 % of P, not more than 0.035 % of S, and the balance of Fe and inevitable impurities; a structure including not less than 95 % of tempered martensitic structure by area ratio in a cross section of a wire material; a compressive residual stress layer formed from a surface to a depth of 0.35 mm to D/4, in which D (mm) is a circle-equivalent diameter of a cross section, the compressive residual stress layer having maximum compressive residual stress of 800 to 2000 MPa; a center portion with Vickers hardness of 550 to 700 HV in the cross section; and a high hardness layer with greater hardness than the center portion by 50 to 500 HV from a surface to a depth of 0.05 to 0.3 mm.
摘要翻译：通过降低材料成本并简化生产过程，提供了具有优异的耐疲劳性的弹簧及其制造方法。本发明提供一种弹簧，其特征在于，以质量％计，C：0.5〜0.7％，Si：1.0〜2.0％，Mn：0.1〜1.0％，Cr：0.1〜1.0％，Cr：0.035％的P，不大于0.035％的S，余量为Fe和不可避免的杂质; 在线材的截面中包含不少于95％的回火马氏体结构面积比的结构; 从表面到深度为0.35mm至D / 4的压缩残余应力层，其中D（mm）是截面的圆当量直径，压缩残余应力层的最大压缩残余应力为800〜 2000MPa; 维氏硬度为550-700HV的中心部分; 以及硬度比硬度高的中心部分的高硬度层，从表面到深度为0.05〜0.3mm的范围是50〜500HV。

6. 发明公开

EP2602350A1 SPRING AND MANUFACTURE METHOD THEREOF 有权转让
标题翻译： SPRING及其方法
公开(公告)号：EP2602350A1
公开(公告)日：2013-06-12
申请号：EP11814765.1
申请日：2011-08-04
申请人： Nhk Spring Co., Ltd.
发明人： SUZUKI, Takeshi , ONO, Yoshiki , KUROKAWA, Shimpei , SHIBAIRI, Kosuke
IPC分类号： C22C38/18 , B24C1/10 , C21D7/06 , C21D9/02 , F16F1/06
CPC分类号： F16F1/021 , B24C1/10 , C21D1/18 , C21D7/06 , C21D8/065 , C21D9/02 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/18
摘要： A spring with superior fatigue resistance and a production method therefor are provided by decreasing the material cost and simplifying the production process. The spring consists of, by mass %, 0.5 to 0.7 % of C, 1.0 to 2.0 % of Si, 0.1 to 1.0 % of Mn, 0.1 to 1.0 % of Cr, not more than 0.035 % of P, not more than 0.035 % of S, and the balance of Fe and inevitable impurities. The spring has a structure including not less than 65 % of bainite and 4 to 13 % of residual austenite by area ratio in a cross section, and the residual austenite contains carbon at an average concentration of 0.65 to 1.7 %. The spring has a compressive residual stress layer in a cross section from a surface to a depth of 0.35 mm to D/4, in which D (mm) in a circle-equivalent diameter of the cross section. The compressive residual stress layer has maximum compressive residual stress of 800 to 2000 MPa. The spring has a center portion with hardness of 550 to 650 HV in a cross section and has a high hardness layer with greater hardness than the center portion by 50 to 500 HV from a surface to a depth of 0.05 to 0.3 mm.

7. 发明公开

EP4364868A1 COIL SPRING, SUSPENSION DEVICE, AND METHOD FOR PRODUCING COIL SPRING 审中-实审
公开(公告)号：EP4364868A1
公开(公告)日：2024-05-08
申请号：EP22833060.1
申请日：2022-06-27
申请人： NHK Spring Co., Ltd.
发明人： OKADA, Hideki , YAMAUCHI, Yuichiro , TANAKA, Ryo , SUZUKI, Takeshi , SHIBAIRI, Kosuke
IPC分类号： B21F35/00 , C21D7/06 , C21D9/02 , C21D1/34 , C21D1/40 , B60G3/28 , F16F1/02 , F16F1/06 , F16F1/12
CPC分类号： B21F35/00 , B60G3/28 , C21D1/34 , C21D9/02 , F16F1/02 , F16F1/06 , F16F1/12 , C21D1/40 , C21D7/06
摘要： According to an embodiment, a coil spring is formed of a wire which is helically wound, and includes an end turn portion and an effective portion, and a surface of the wire in the end turn portion includes an area which is softer than a surface of the wire in the effective portion.

8. 发明授权

EP3315811B1 ELASTIC MEMBER AND WIRE ROD FOR ELASTIC MEMBER 有权
公开(公告)号：EP3315811B1
公开(公告)日：2019-11-06
申请号：EP16817914.1
申请日：2016-06-28
申请人： NHK Spring Co., Ltd.
发明人： KAZAMA, Toshio , TAKAMURA, Noritoshi , ISHIKAWA, Shigeki , SUZUKI, Takeshi
IPC分类号： F16F1/02 , C22C21/00 , F16F1/06 , F16F1/14

9. 发明公开

EP3418409A1 ALUMINUM ALLOY AND FASTENER MEMBER 有权
公开(公告)号：EP3418409A1
公开(公告)日：2018-12-26
申请号：EP17753285.0
申请日：2017-02-16
申请人： NHK Spring Co., Ltd. , Topura Co., Ltd.
发明人： KANEDA, Noriyoshi , SUZUKI, Takeshi , MIYAMOTO, Kouhei , HORIUCHI, Naoki
IPC分类号： C22C21/02 , C22C21/06 , F16B35/00 , F16B37/00 , F16B19/06 , C22F1/05
摘要： An aluminum alloy according to the present invention contains 0.7% to 1.8% of silicon, 0.5% to 2.1% of copper, 0.4% to 1.8% of manganese, 0.6% to 1.6% of magnesium, and 0.1% to 0.7% of zinc in terms of mass ratio and the balance aluminum with inevitable impurities.

10. 发明公开

EP3730639A1 ALUMINUM ALLOY, SPRING MADE OF ALUMINUM ALLOY, AND FASTENING MEMBER MADE OF ALUMINUM ALLOY 审中-公开
公开(公告)号：EP3730639A1
公开(公告)日：2020-10-28
申请号：EP18891392.5
申请日：2018-12-21
申请人： NHK Spring Co., Ltd.
发明人： SUZUKI, Takeshi , NAKANO, Junichi
IPC分类号： C22C21/10 , F16B19/04 , F16B35/00 , F16B37/00 , F16F1/02 , F16F1/06 , C22F1/00 , C22F1/053
摘要： An aluminum alloy includes 1.2% by mass to 4.0% by mass of copper, 4.0% by mass to 14.0% by mass of zinc, 0.5% by mass to 4.0% by mass of magnesium, 0.01% or less of silicon, and 0.01% or less of iron, with the balance containing aluminum and inevitable impurities, and has an average equivalent circle crystal grain size of 500 nm or less.

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