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

IPC: B60G11/14 ,  F16F1/12

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：US20180111531A1

公开(公告)日：2018-04-26

申请号：US15785274

申请日：2017-10-16

Applicant: NHK SPRING CO., LTD.

Inventor： Yoshitaka Sasaki ,  Shunichirou Osa ,  Akihiro Hayashi ,  Hiroaki Takeuchi ,  Kazuki Hirao

IPC: B60N2/68 ,  B60N2/70

Abstract: A cushion pan for a seat cushion is formed from a metal sheet and the cushion pan incudes: an outer frame section that is formed in a frame shape in a seat plan view, a pair of mutually opposing sides of the outer frame section each including a horizontal portion with a respective thickness direction along a seat up-down direction; a pair of side plate portions that extend toward one side in the seat up-down direction from facing end portions of the pair of horizontal portions; and a plate spring portion having a flat plate shape bridging between ends of the pair of side plate portions on an opposite side of the side plate portions from the pair of horizontal portions.

公开(公告)号：US09955611B2

公开(公告)日：2018-04-24

申请号：US15032470

申请日：2014-10-28

Applicant: NHK Spring Co., Ltd.

Inventor： Norihiro Tajima ,  Yusuke Terada ,  Yosuke Kawai

IPC: F16F1/18 ,  F16F3/02 ,  H05K7/20 ,  H01L23/473 ,  H01L23/40 ,  H01L23/367 ,  H01L25/10

CPC classification number: H05K7/2049 ,  F16F1/185 ,  F16F3/023 ,  H01L23/3675 ,  H01L23/40 ,  H01L23/4012 ,  H01L23/473 ,  H01L25/105 ,  H01L2023/4068 ,  H01L2225/1094 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A pressure structure which is arranged between a first pressed body and a second pressed body facing the first pressed body and applies a pressure to the first pressed body and the second pressed body includes: a first spring member including a center portion which is in contact with the first pressed body, two end portions, each of which is in contact with the second pressed body, and two arm portions which extend from the center portion toward the different end portions; and a second spring member including a center portion which is in contact with the second pressed body, two end portions, each of which is in contact with the first pressed body, and two arm portions which extend from the center portion toward the different end portions.

公开(公告)号：US09937833B2

公开(公告)日：2018-04-10

申请号：US14794637

申请日：2015-07-08

Applicant: NHK SPRING CO., LTD.

Inventor： Yoshitaka Sasaki ,  Akitoshi Yamashita ,  Tomo Ishibashi ,  Hiroaki Inaba

IPC: B60N2/68 ,  B60N2/56 ,  B60N2/42 ,  B60N2/427

CPC classification number: B60N2/5657 ,  B60N2/4228 ,  B60N2/42709 ,  B60N2/68 ,  B60N2/686

Abstract: There is provided a seatback frame including: left and right side frames that are provided at left and right side portions of a seatback of a vehicle seat, with the respective lower end portions of the side frames coupled to a rear end portion of a seat cushion frame provided to a seat cushion of the vehicle seat; and a back face panel that is formed of sheet metal, that spans across between rear end portions of lower portions of the left and right side frames with its thickness direction along a seatback front-rear direction, that is fixed to the left and right side frames, and that includes an undulating shaped portion bent such that peaks and troughs alternate in a row along a seat width direction.

公开(公告)号：US20180071812A1

公开(公告)日：2018-03-15

申请号：US15818316

申请日：2017-11-20

Applicant: NHK SPRING CO., LTD.

Inventor： Takeshi FURUSE ,  Yusuke KUMAGAWA

IPC: B21F35/02

CPC classification number: B21F35/02 ,  B21F1/02 ,  B21F1/026 ,  B21F3/04 ,  B21F11/00 ,  B21F11/005 ,  B21F23/00 ,  B21F23/002 ,  B21F23/005 ,  B21F35/00 ,  F16F2224/0208 ,  F16F2226/04 ,  F16F2238/026

Abstract: The coil spring manufacturing device includes a first continuous material mounting portion, a second continuous material mounting portion, a straightener, a cutter, a short material mounting portion, and a coiling machine. The material reeled out from a first continuous material or a second continuous material is cut by the cutter. The coil spring manufacturing device can switch a process among a first continuous material coiling process of manufacturing a coil spring by using the first continuous material, a second continuous material coiling process of manufacturing a coil spring by using the second continuous material, and a short material coiling process of manufacturing a coil spring by using the short material.

公开(公告)号：US09869378B2

公开(公告)日：2018-01-16

申请号：US14772681

申请日：2014-02-06

Applicant: NHK SPRING CO., LTD.

Inventor： Takao Kobayashi ,  Takahiro Ito ,  Yoshiyuki Takahashi ,  Kazuhito Hiraoka

IPC: F16H7/08 ,  F16H7/22 ,  F01L1/18

CPC classification number: F16H7/08 ,  F01L1/18 ,  F16H2007/0804 ,  F16H2007/081 ,  F16H2007/0893

Abstract: A load-applying device is provided that includes a spiral spring that is formed from a thin strip that is wound multiple times in a spiral shape; a movable body; and a fixing member. The spiral spring is disposed between the movable body and the fixing member, in a manner capable of performing a diameter reduction operation and a diameter expansion operation, and an outer-circumference part of the spiral spring contacting the movable body and the fixing member directly, or indirectly.

公开(公告)号：US20170349962A1

公开(公告)日：2017-12-07

申请号：US15534472

申请日：2015-12-04

Applicant: NHK SPRING CO., LTD.

Inventor： Shinichiro KUWATSUKA ,  Yurika OKUDAIRA ,  Akira TANGE ,  Hideki OKADA ,  Ken TAKAHASHI

IPC: C21D9/00 ,  B21D47/00 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/44 ,  B21D53/88 ,  C21D8/06 ,  C21D7/06 ,  C21D6/00 ,  C21D1/60 ,  B60G21/055 ,  B24C1/10 ,  C22C38/54

CPC classification number: C21D9/0068 ,  B21D47/00 ,  B21D53/88 ,  B24C1/10 ,  B60G21/055 ,  B60G2206/427 ,  B60G2206/724 ,  B60G2206/81035 ,  B60G2206/8402 ,  B60G2206/8403 ,  C21D1/60 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D7/06 ,  C21D8/065 ,  C21D9/0075 ,  C21D9/02 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C22C38/60 ,  F16F1/14

Abstract: A stabilizer formed by using a metal bar having a solid structure and configured to reduce a displacement between right and left wheels, including a torsion part extending in a vehicle width direction, being capable of a torsional deformation, and having a diameter of 10 to 32 mm, is provided. The stabilizer has a chemical composition containing at least C: 0.15% by mass or more to 0.39% by mass or less, Mn, B, and Fe, and also has a metal structure 90% or more of which is a martensite structure.

公开(公告)号：US09835544B2

公开(公告)日：2017-12-05

申请号：US15060568

申请日：2016-03-03

Applicant: NHK SPRING CO., LTD.

Inventor： Hideki Kashima ,  Yuji Sugita ,  Takeshi Shimoda ,  Tsutomu Fukuda

IPC: G01N19/04 ,  G11B5/455 ,  G11B5/48

CPC classification number: G01N19/04 ,  G11B5/455 ,  G11B5/483 ,  G11B5/4853

Abstract: According to an embodiment, a bonding strength test device measures bonding strength between a flexure of a suspension of a hard disk drive and microactuators mounted on a gimbal of the flexure. The bonding strength test device includes a clamp, dummy, and device body. The clamp fixes the flexure. The dummy is adhered to the microactuators. The probe is engaged in the dummy. The device body measures a tensile load applied to the probe while the probe is pulled toward a direction to be apart from the flexure.

公开(公告)号：US20170313149A1

公开(公告)日：2017-11-02

申请号：US15528047

申请日：2015-11-10

Applicant: NHK SPRING CO., LTD.

Inventor： Hidenori CHIHARA ,  Hiroto TSUJI ,  Shinichiro KUWATSUKA

IPC: B60G11/04 ,  C21D9/02 ,  F16F1/26 ,  B21D19/12 ,  B21D53/88 ,  F16F3/02

Abstract: A leaf spring device includes a main leaf made of a steel plate including an elastic section configured to generate elastic force when bent; and an eye section formed in an end portion of the elastic section, the elastic section and the eye section being tempered. There is also provided a method for manufacturing the leaf spring device. The eye section is formed by rolling the end of the elastic section into a circular form. The eye section is tempered at a higher temperature than the elastic section.

公开(公告)号：US20170306432A1

公开(公告)日：2017-10-26

申请号：US15520616

申请日：2015-10-26

Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) ,  NHK SPRING CO., LTD.

Inventor： Takuya KOCHI ,  Hitoshi HATANO ,  Akira TANGE ,  Kiyoshi KURIMOTO ,  Yurika GOTO

IPC: C21D9/08 ,  C22C38/06 ,  C22C38/02 ,  C21D6/00 ,  C22C38/00 ,  C22C38/18 ,  C22C38/04

Abstract: A method for manufacturing steel, by quenching and tempering a seamless pipe for use as a material of a hollow spring, where the seamless pipe including predetermined components is subjected to a heat treatment which is performed to satisfy quenching conditions (1) and tempering conditions (2), (1) quenching conditions: 26,000≦(T1+273)×(log(t1)+20)≦29,000  formula (1) 900° C.≦T1≦1,050° C., 10 seconds≦t1≦1,800 seconds, where T1 is a quenching temperature (° C.), and t1 is a holding time (seconds) in a temperature range of 900° C. or higher, and (2) tempering conditions: 13,000≦(T2+273)×(log(t2)+20)≦15,500  formula (2) T2≦550° C., and t2≦3,600 seconds, where T2 is a tempering temperature (° C.), and t2 is a total time (seconds) from start of heating to completion of cooling.