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1.发明授权公开(公告)号：US09835217B2
公开(公告)日：2017-12-05
申请号：US14620916
申请日：2015-02-12
Applicant: NHK SPRING CO., LTD. , NHK INTERNATIONAL CORPORATION
Inventor： Takahiro Nakamura , Kazuo Furukawa , Senri Moriyama , Ryuichi Sato , Shinichi Nishizawa
CPC classification number: F16F1/04 , F16F2230/0017 , G09B23/08 , G09B25/025
Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device, a torsion detection mechanism, and a controller. The torsion detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. The displacement gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. The controller calculates a relative torsional angle between the first attachment member and the second attachment member based on the detected displacement.
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公开(公告)号：US10229242B2
公开(公告)日：2019-03-12
申请号：US15086009
申请日：2016-03-30
Applicant: NHK SPRING CO., LTD.
Inventor： Yoshio Kobayashi , Shinichi Nishizawa , Nobuhisa Yasuda
Abstract: In a design method of torsion bars used for a trunk lid, free shapes of the torsion bars unhitched from the trunk lid are designed. A center line model of the initial free shape is geometrically and statically created on the basis of a design specification. The center line model of an open shape is created from the free shape model and is deformed into a center line model of a closed modified shape. The center line models of the analyzed closed shape and the target closed shape is compared with each other to obtain a difference torque and a difference vector occurring between corresponding nodes on the center lines. The center line model is so changed as to decrease the difference torque and the difference vector.
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公开(公告)号：US09811067B2
公开(公告)日：2017-11-07
申请号：US14620855
申请日：2015-02-12
Applicant: NHK SPRING CO., LTD. , NHK INTERNATIONAL CORPORATION
Inventor： Takahiro Nakamura , Kazuo Furukawa , Senri Moriyama , Ryuichi Sato , Shinichi Nishizawa
CPC classification number: G05B17/02 , F16F1/04 , F16F2230/0017 , G09B23/08
Abstract: A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a spring height detection mechanism, and a controller. The spring height detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. These gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. A hydraulic pressure supply device is controlled by the controller and supplies fluid pressure according to the displacement detected by the gauges to the respective hydraulic cylinders.
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公开(公告)号：US09470590B2
公开(公告)日：2016-10-18
申请号：US14620795
申请日：2015-02-12
Applicant: NHK SPRING CO., LTD. , NHK INTERNATIONAL CORPORATION
Inventor： Takahiro Nakamura , Kazuo Furukawa , Senri Moriyama , Ryuichi Sato , Shinichi Nishizawa
CPC classification number: G01L5/00 , F16F1/04 , F16F2230/0017 , G01L5/16
Abstract: A coil spring modeling apparatus includes an actuator unit formed of a Stewart-platform-type parallel mechanism, a first inner load cell accommodated in a first attachment member, a second inner load cell accommodated in a second attachment member, and a rotation support mechanism. The actuator unit is rotatably supported by the rotation support mechanism about an axis. The first inner load cell is arranged on the first seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the lower spring seat and a moment. The second inner load cell is arranged under the second seat adapter coaxially with the rotation support mechanism, and detects an axial force acting on the upper spring seat and a moment.
Abstract translation: 螺旋弹簧造型装置包括由斯图尔特平台型平行机构构成的致动器单元，容纳在第一附接构件中的第一内部负载单元，容纳在第二安装构件中的第二内部负载单元和旋转支撑机构。 致动器单元围绕轴线被旋转支撑机构可旋转地支撑。 第一内部称重传感器布置在与旋转支撑机构同轴的第一座椅适配器上，并且检测作用在下部弹簧座上的轴向力和瞬间。 第二内部称重传感器布置在与旋转支撑机构同轴的第二座椅适配器下方，并且检测作用在上部弹簧座上的轴向力和力矩。
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公开(公告)号：US10155425B2
公开(公告)日：2018-12-18
申请号：US15421372
申请日：2017-01-31
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi Nishizawa
Abstract: A coil spring for use in a link-motion-type suspension includes a lower end turn portion, an upper end turn portion, and an effective portion of a cylindrical shape between the lower end turn portion and the upper end turn portion. Further, the coil spring includes a bowing control portion including a taper portion formed in at least one end turn portion of the lower end turn portion and the upper end turn portion. The taper portion has a shape whose thickness is reduced from the middle of the end turn portion toward a distal end of a wire along its length, and bowing of the effective portion is suppressed by absorbing a change in the inclination of a spring seat by the taper portion.
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Patent Agency Ranking
公开(公告)号：US10065471B2
公开(公告)日：2018-09-04
申请号：US15421380
申请日：2017-01-31
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi Nishizawa
Abstract: A coil spring for a vehicle suspension according to one embodiment includes a lower end turn portion, an upper end turn portion, and a cylindrical effective portion between the lower end turn portion and the upper end turn portion. In at least one of the upper end turn portion and the lower end turn portion, a taper portion having a taper length and a taper thickness for controlling a force line of the coil spring is formed. The taper portion is formed such that the thickness is reduced in a tapered way from a thickness varying portion provided in the middle of the end turn portion toward a distal end of the wire along its length. The thickness varying portion is arranged at a position close to the force line.
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公开(公告)号：US11940031B2
公开(公告)日：2024-03-26
申请号：US17703295
申请日：2022-03-24
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi Nishizawa , Daisuke Ibano , Tsuyoshi Matsuda , Norifumi Arisaka , Shun Muramatsu , Chihiro Ito , Takuto Suzuki , Masatake Kinoshita , Asuka Kawasaki
CPC classification number: F16F1/043 , F16F1/06 , B60G11/14 , B60G2202/12 , B60G2206/42 , B60G2600/44 , B60G2800/162 , F16F2230/00 , F16F2230/0023 , F16F2238/026
Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.
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公开(公告)号：US11821485B1
公开(公告)日：2023-11-21
申请号：US17830147
申请日：2022-06-01
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi Nishizawa , Takeshi Furuse , Senri Moriyama
CPC classification number: F16F1/043 , F16F1/06 , B60G11/14 , B60G2202/12 , B60G2206/724 , B60G2800/162 , F16F2224/0208 , F16F2238/026
Abstract: According to one embodiment, a coil spring includes a wire rod with a first end and a second end. The wire rod includes a round section portion including a round first cross section perpendicular to a longitudinal direction of the wire rod, a quadrangle section portion including a quadrangle a second section perpendicular to the longitudinal direction, and a variable section portion formed between the round section portion and the quadrangle section portion of the wire rod. The cross section of the variable section portion varies from circular to quadrangle from the round section portion to the quadrangle section portion. The end turn part of the coil spring includes the quadrangle section portion. The width and thickness of the second cross-section are smaller than the diameter of the first cross-section. The area of the second cross section is smaller than the area of the square inscribed in the circle of diameter of the first cross section.
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公开(公告)号：US11371575B1
公开(公告)日：2022-06-28
申请号：US17113438
申请日：2020-12-07
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi Nishizawa , Senri Moriyama , Fang Dai , Takeshi Furuse
IPC: F16F1/04
Abstract: According to an embodiment, a coil spring includes a wire rod having an end and the other end. The wire rod of the coil spring includes, with regard to a section of the wire rod, a round section portion of an effective spring part, a square section portion in which the section is substantially square, and a taper portion. The square section portion includes an end turn part. A length of each side of the section of the square section portion is less than or equal to a square root of ½ multiplied by a diameter of the wire rod of the round section portion. In the taper portion, from the round section portion to the square section portion, 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：US10144261B2
公开(公告)日：2018-12-04
申请号：US15421384
申请日：2017-01-31
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi Nishizawa
Abstract: A coil spring according to one embodiment includes a lower end turn portion which is in contact with a lower spring seat, an upper end turn portion which is in contact with an upper spring seat, and an effective portion between the lower end turn portion and the upper end turn portion. The coil spring is cylindrical about an axis of the effective portion in its free shape which is not compressed. Further, with respect to a coordinate system in which a force line is assumed as a Z-axis, the coil spring 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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