-
公开(公告)号：US20230304556A1
公开(公告)日：2023-09-28
申请号：US18076717
申请日：2022-12-07
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi NISHIZAWA , Daisuke IBANO , Tsuyoshi MATSUDA , Norifumi ARISAKA , Shun MURAMATSU , Chihiro ITO , Takuto SUZUKI , Masatake KINOSHITA , Asuka KAWASAKI
IPC: F16F1/04 , C09D175/04
CPC classification number: F16F1/042 , C09D175/04
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.
-
公开(公告)号：US20180215226A1
公开(公告)日：2018-08-02
申请号：US15421384
申请日：2017-01-31
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi NISHIZAWA
CPC classification number: F16F1/123 , B60G15/063 , B60G2202/312 , B60G2204/1242 , B60G2206/426 , B60G2206/81035 , F16F2232/08
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.
-
公开(公告)号：US20170286591A1
公开(公告)日：2017-10-05
申请号：US15086009
申请日：2016-03-30
Applicant: NHK SPRING CO., LTD.
Inventor： Yoshio KOBAYASHI , Shinichi NISHIZAWA , Nobuhisa YASUDA
CPC classification number: G06F17/5086 , E05F1/1238 , E05Y2201/624 , E05Y2900/548 , G06F17/5018
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.
-
公开(公告)号：US20240066936A1
公开(公告)日：2024-02-29
申请号：US18494235
申请日：2023-10-25
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi NISHIZAWA , Takeshi FURUSE , Senri MORIYAMA , Yusuke TANAKA
CPC classification number: B60G7/04 , B60G7/001 , F16F1/12 , B60G2202/12
Abstract: A coil spring includes a wire rod including a round section portion and a flat section portion. The round section portion includes a first cross section whose cross section is round. The flat section portion includes a second cross section that is flat. The second cross section has a width greater than or equal to the diameter of the first cross section and a thickness less than the width. A polar moment of inertia of area of the second cross section is smaller than that of the first cross section. A variable section portion is formed between the round section portion and the flat section portion. The variable section portion changes its cross section from circular to flat from the round section portion towards the flat section portion.
-
公开(公告)号：US20230392662A1
公开(公告)日：2023-12-07
申请号：US17830147
申请日：2022-06-01
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi NISHIZAWA , Takeshi FURUSE , Senri MORIYAMA
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.
-
Patent Agency Ranking
公开(公告)号：US20230304558A1
公开(公告)日：2023-09-28
申请号：US18321447
申请日：2023-05-22
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi NISHIZAWA , Daisuke IBANO , Tsuyoshi MATSUDA , Norifumi ARISAKA , Shun MURAMATSU , Chihiro ITO , Takuto SUZUKI , Masatake KINOSHITA , Asuka KAWASAKI
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.
-
公开(公告)号：US20180215225A1
公开(公告)日：2018-08-02
申请号：US15421380
申请日：2017-01-31
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi NISHIZAWA
CPC classification number: B60G11/14 , B60G2202/312 , B60G2206/426 , B60G2206/81035 , F16F1/123
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.
-
公开(公告)号：US20180215224A1
公开(公告)日：2018-08-02
申请号：US15421372
申请日：2017-01-31
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi NISHIZAWA
CPC classification number: B60G11/14 , B60G3/02 , B60G2206/426 , B60G2206/81035 , F16F1/123
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.
-
公开(公告)号：US20230304557A1
公开(公告)日：2023-09-28
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 , F16F2238/026 , F16F2230/00 , B60G11/14
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.
-
公开(公告)号：US20220178415A1
公开(公告)日：2022-06-09
申请号：US17113438
申请日：2020-12-07
Applicant: NHK SPRING CO., LTD.
Inventor： Shinichi NISHIZAWA , Senri MORIYAMA , Fang DAI , Takeshi FURUSE
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 potion 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.
-
-
-
-
-
-
-
-
-
Search Results
13
records
(took 0.015 seconds)
