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公开(公告)号：EP3258232A1
公开(公告)日：2017-12-20
申请号：EP16749290.9
申请日：2016-02-10
Applicant: NHK Spring Co., Ltd.
Inventor： NAKAMURA, Takahiro , FURUKAWA, Kazuo , MORIYAMA, Senri , SATO, Ryuichi , NISHIZAWA, Shinichi
CPC classification number: G01L5/00 , F16F1/04 , F16F2230/0017 , G01L5/16
Abstract: A coil spring modeling apparatus (20) includes an actuator unit (30) formed of a Stewart-platform-type parallel mechanism, a first inner load cell (41) accommodated in a first attachment member (21), a second inner load cell (42) accommodated in a second attachment member (22), and a rotation support mechanism (50). The actuator unit (30) is rotatably supported by the rotation support mechanism (50) about an axis (L 1 ). The first inner load cell (41) is arranged on the first seat adapter (27) coaxially with the rotation support mechanism (50), and detects an axial force acting on the lower spring seat (10A) and a moment. The second inner load cell (42) is arranged under the second seat adapter (28) coaxially with the rotation support mechanism (50), and detects an axial force acting on the upper spring seat (15A) and a moment.
Abstract translation: 螺旋弹簧造型装置（20）包括由Stewart平台型并联机构形成的致动器单元（30），容纳在第一附接构件（21）中的第一内部负载单元（41），第二内部负载单元 容纳在第二安装构件（22）中的旋转支撑机构（50），以及旋转支撑机构（50）。 致动器单元（30）围绕轴线（L1）由旋转支撑机构（50）可旋转地支撑。 第一内部测力传感器41与旋转支撑机构50同轴地配置在第一座椅适配器27上，检测作用于下部弹簧座10A的轴向力和力矩。 第二内部载荷传感器42与旋转支撑机构50同轴地配置在第二座椅适配器28的下方，检测作用于上部弹簧座15A的轴力和力矩。
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公开(公告)号：EP4502415A1
公开(公告)日：2025-02-05
申请号：EP23774483.4
申请日：2023-03-06
Applicant: NHK Spring Co., Ltd.
Inventor： NISHIZAWA, Shinichi , IBANO, Daisuke , MATSUDA, Tsuyoshi , ARISAKA, Norifumi , MURAMATSU, Shun , ITO, Chihiro , SUZUKI, Takuto , KINOSHITA, Masatake , KAWASAKI, Asuka
Abstract: A coil spring (1) includes a wire rod (2) and an elastic coat (60) provided on the wire rod (2). The coil spring (1) includes a coil section (33) including a plurality of coil portions. The wire rod (2) includes a round cross-sectional portion (30), a cross-section varying portion (32), and a rectangular cross-sectional portion (31) along the longitudinal direction of the wire rod (2). The cross section (S2) of the rectangular cross-sectional portion (31) is substantially square and has a first plane (41a) and a second plane (42a). The first plane (41a) and the second plane (42a) oppose each other in the coil section (33). The elastic coat (60) is provided on at least one of the first plane (41a) and the second plane (42a). The elastic coat (60) is continuous from the round cross-sectional portion (30) to the cross-section varying portion (32) and the rectangular cross-sectional portion (31).
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公开(公告)号：EP3578844A1
公开(公告)日：2019-12-11
申请号：EP17894715.6
申请日：2017-12-28
Applicant: NHK Spring Co., Ltd.
Inventor： NISHIZAWA, Shinichi
Abstract: A coil spring (2) for a vehicle suspension according to one embodiment includes a lower end turn portion (20), an upper end turn portion (21), and a cylindrical effective portion (22) between the lower end turn portion (20) and the upper end turn portion (21). In at least one of the upper end turn portion (21) and the lower end turn portion (20), a taper portion (25)(26) having a taper length and a taper thickness for controlling a force line (FL) of the coil spring (2) is formed. The taper portion (25)(26) is formed such that the thickness is reduced in a tapered way from a thickness varying portion (25a)(26a) provided in the middle of the end turn portion (20)(21) toward a distal end of the wire (4) along its length. The thickness varying portion (25a)(26a) is arranged at a position close to the force line (FL).
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公开(公告)号：EP3258233A1
公开(公告)日：2017-12-20
申请号：EP16749291.7
申请日：2016-02-10
Applicant: NHK Spring Co., Ltd.
Inventor： NAKAMURA, Takahiro , FURUKAWA, Kazuo , MORIYAMA, Senri , SATO, Ryuichi , NISHIZAWA, Shinichi
CPC classification number: G05B17/02 , F16F1/04 , F16F2230/0017
Abstract: A coil spring modeling apparatus (20) includes a first attachment member (21) disposed on a lower spring seat (10A), a second attachment member (22) disposed on an upper spring seat (15A), an actuator unit (30) formed of a Stewart-platform-type parallel mechanism, a spring height detection mechanism (40A), a hydraulic pressure supply device (37), and a controller (70). The spring height detection mechanism (40A) is constituted of displacement gauges (40 1 -40 6 ) such as a linear variable differential transformer (LVDT). These displacement gauges (40 1 -40 6 ) are provided on hydraulic cylinders (31 1 -31 6 ), and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders (31 1 -31 6 ), respectively. The hydraulic pressure supply device (37) is controlled by the controller (70) and supplies fluid pressure according to the amounts of displacement detected by the displacement gauges (40 1 -40 6 ) to the respective hydraulic cylinders (31 1 -31 6 ).
Abstract translation: 本发明提供一种螺旋弹簧造型装置，该螺旋弹簧造型装置包括设置在下弹簧座上的第一安装构件，设置在上弹簧座上的第二安装构件， Stewart平台型并联机构，弹簧高度检测机构（40A），液压供给装置（37）以及控制器（70）。 弹簧高度检测机构（40A）由线性可变差动变压器（LVDT）等位移计（401-406）构成。 这些位移计（401-406）设置在液压缸（311-316）上，并分别检测相对于液压缸（311-316）的参考长度的位移量。 液压供应装置（37）由控制器（70）控制，并根据由位移仪（401-406）检测到的位移量向各个液压缸（311-316）供应流体压力。
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Patent Agency Ranking
公开(公告)号：EP4257841A1
公开(公告)日：2023-10-11
申请号：EP21903064.0
申请日：2021-11-02
Applicant: NHK Spring Co., Ltd.
Inventor： NISHIZAWA, Shinichi , MORIYAMA, Senri , DAI, Fang , FURUSE, Takeshi
IPC: F16F1/06
Abstract: According to an embodiment, a coil spring includes a wire rod (2) having an end and the other end. The wire rod (2) of the coil spring includes, with regard to a section of the wire rod (2), a round section potion (30) of an effective spring part (13), a square section portion (31) in which the section is substantially square, and a taper portion (32). The square section portion (31) includes an end turn part (11)(12). A length of each side of the section of the square section portion (31) is less than or equal to a square root of 1/2 multiplied by a diameter of the wire rod (2) of the round section portion (30). In the taper portion (32), from the round section portion (30) to the square section portion (31), the section changes from a round shape to substantially a square shape, and a sectional area is decreased.
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公开(公告)号：EP3578846A1
公开(公告)日：2019-12-11
申请号：EP18748627.9
申请日：2018-01-26
Applicant: NHK Spring Co., Ltd.
Inventor： NISHIZAWA, Shinichi
Abstract: A coil spring (2) according to one embodiment includes a lower end turn portion (20) which is in contact with a lower spring seat (10), an upper end turn portion (21) which is in contact with an upper spring seat (11), and an effective portion (22) between the lower end turn portion (20) and the upper end turn portion (21). The coil spring (2) is cylindrical about an axis of the effective portion (22) in its free shape which is not compressed. Further, with respect to a coordinate system in which a force line (FL) is assumed as a Z-axis, the coil spring (2) is cylindrical with a constant pitch in a direction along the Z-axis in its compressed shape which is compressed to a specified height.
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公开(公告)号：EP3578845A1
公开(公告)日：2019-12-11
申请号：EP17895298.2
申请日：2017-12-28
Applicant: NHK Spring Co., Ltd.
Inventor： NISHIZAWA, Shinichi
Abstract: A coil spring (2) for use in a link-motion-type suspension (1) includes a lower end turn portion (20), an upper end turn portion (21), and an effective portion (22) of a cylindrical shape between the lower end turn portion (20) and the upper end turn portion (21). Further, the coil spring (2) includes a bowing control portion (100) including a taper portion (25) formed in at least one end turn portion of the lower end turn portion (20) and the upper end turn portion (21). The taper portion (25) has a shape whose thickness is reduced from the middle of the end turn portion (20) toward a distal end (4X) of a wire (4) along its length, and bowing of the effective portion (22) is suppressed by absorbing a change in the inclination of a spring seat (10) by the taper portion (25) .
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公开(公告)号：EP3258234A1
公开(公告)日：2017-12-20
申请号：EP16749292.5
申请日：2016-02-10
Applicant: NHK Spring Co., Ltd.
Inventor： NAKAMURA, Takahiro , FURUKAWA, Kazuo , MORIYAMA, Senri , SATO, Ryuichi , NISHIZAWA, Shinichi
CPC classification number: F16F1/04 , F16F2230/0017
Abstract: A coil spring modeling apparatus (20) includes a first attachment member (21) disposed on a lower spring seat (10A), a second attachment member (22) disposed on an upper spring seat (15A), an actuator unit (30) formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device (37), a torsion detection mechanism (40A), and a controller (70). The torsion detection mechanism (40A) is constituted of displacement gauges (40 1 -40 6 ) such as a linear variable differential transformer (LVDT). The displacement gauges (40 1 -40 6 ) are provided on hydraulic cylinders (31 1 -31 6 ), and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders (31 1 -31 6 ), respectively. The controller (70) calculates a relative torsional angle between the first attachment member (21) and the second attachment member (22) based on the detected amounts of displacement.
Abstract translation: 本发明提供一种螺旋弹簧造型装置，该螺旋弹簧造型装置包括设置在下弹簧座上的第一安装构件，设置在上弹簧座上的第二安装构件， Stewart平台型并联机构，液压供给装置（37），扭转检测机构（40A），控制器（70）等构成。 扭转检测机构40A由线性可变差动变压器（LVDT）等位移计（401-406）构成。 位移计（401-406）设置在液压缸（311-316）上，并分别检测相对于液压缸（311-316）的参考长度的位移量。 控制器（70）基于检测到的位移量来计算第一附接构件（21）和第二附接构件（22）之间的相对扭转角。
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公开(公告)号：EP2212581B1
公开(公告)日：2017-12-13
申请号：EP08843263.8
申请日：2008-10-08
Applicant: NHK Spring Co., Ltd.
Inventor： NISHIZAWA, Shinichi , SAKAI, Tadashi
CPC classification number: G06F17/5018 , B60G11/15 , B60G2202/12 , F16F1/04
Abstract: A finite element analysis (FEA) based coil spring design method that utilizes a reverse engineering based concept. The method involves first designing a desired jounce profile, which is typically an output in the conventional FEA based design, and then reversely determining the corresponding free profile necessary for manufacturing a spring having desired performance specifications.
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