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.

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

IPC: G06F17/50 ,  E05F1/12

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：US09721598B2

公开(公告)日：2017-08-01

申请号：US14695646

申请日：2015-04-24

Applicant: NHK Spring Co., Ltd.

Inventor： Sei Kawao ,  Yukie Yamada

IPC: G11B5/48

CPC classification number: G11B5/483 ,  G11B5/48 ,  G11B5/4833 ,  G11B5/4846 ,  G11B5/4853 ,  G11B5/4873

Abstract: A terminal pad of a flexure for a head suspension connected to a functional part through a bonding material includes a terminal body, a base plating formed on a surface of the terminal body and having an uniform thickness, a padding plating made of a same material as the base plating and integrated with the base plating so that the padding plating swells with respect to the base plating, and a surface plating formed on a surface of the padding plating.