公开(公告)号：US20200043638A1

公开(公告)日：2020-02-06

申请号：US16598100

申请日：2019-10-10

Applicant: NHK SPRING CO., LTD.

Inventor： Toshihiko HANAMACHI ,  Kenji SEKIYA ,  Go TAKAHARA ,  Naoya AIKAWA ,  Yuta KISARA ,  Arata TATSUMI

IPC: H01C1/03

Abstract: A heather unit including a small diameter sheath heater with improved reliability is provided. The heater unit includes a first substrate having a first joint surface and a second substrate having a second joint surface being joined together, a groove arranged on at least one of the first joint surface or the second joint surface, and a sheath heater arranged inside the groove. The sheath heater includes a metal sheath, a heating wire having a band shape, the heating wire arranged with a space within the metal sheath so as to rotate with respect to an axis direction of the metal sheath, an insulating material arranged in the space, and connection terminals arranged at one end of the metal sheath, the connection terminals electrically connected with both ends of the heating wire respectively.

公开(公告)号：US10549594B2

公开(公告)日：2020-02-04

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 ,  B21D19/12 ,  B21D53/88 ,  F16F1/26 ,  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：US10549334B2

公开(公告)日：2020-02-04

申请号：US15688570

申请日：2017-08-28

Applicant: NHK SPRING CO., LTD.

Inventor： Yuu Ichitsuka ,  Yuji Mori

IPC: B21F3/04 ,  B21F35/00 ,  F16F1/04

Abstract: A coil spring manufacturing device includes a mandrel around which a wire is wound, a feed mechanism which feeds the wire toward the mandrel, guide members which guide the wire, a chuck which fixes a distal end of the wire, and a clamp mechanism. The clamp mechanism sandwiches the wire from both sides before the distal end of the wire reaches the mandrel. Further, the clamp mechanism can be rotated about a fulcrum by rotation actuator, and can also be slid in a direction along an axis of the mandrel by sliding actuator. In a state in which the wire is sandwiched by the clamp mechanism, the clamp mechanism is rotated, and if necessary, is slid. Thereby, a bent portion for a negative pitch portion of a coil spring is formed at a part of the wire.

公开(公告)号：US20200033380A1

公开(公告)日：2020-01-30

申请号：US16498480

申请日：2018-03-26

Applicant: NHK Spring Co., Ltd.

Inventor： Tsukasa Sakaguchi ,  Kazuya Souma

IPC: G01R1/073

Abstract: A probe holder holds contact probes each of which comes in contact with one electrode of a contact target on one end portion side in a longitudinal direction. The probe holder includes a plate in which holder holes configured to hold the respective contact probes are formed and penetrate the probe holder. Each of the holder holes includes a first hole portion disposed on one end of a penetrating direction and extending in the penetrating direction, a large diameter portion connected to the first hole portion and extending in the penetrating direction, the large diameter portion being larger than a diameter of the first hole portion, and a second hole portion disposed on another end of the penetrating direction, connected to the large diameter portion, and extending in the penetrating direction, the second hole portion being smaller than a diameter of the large diameter portion.

公开(公告)号：US20200011392A1

公开(公告)日：2020-01-09

申请号：US16491018

申请日：2018-03-08

Applicant: NHK SPRING Co., Ltd.

Inventor： Hideaki SAKAI

IPC: F16F1/32

Abstract: The wave spring includes an annular body formed by alternately connecting a convex portion and a concave portion in a circumferential direction, wherein the annular body is provided with a notch.

公开(公告)号：US10526675B2

公开(公告)日：2020-01-07

申请号：US15520616

申请日：2015-10-26

Applicant: 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 ,  C21D9/02 ,  C22C38/50 ,  C22C38/20 ,  C22C38/46 ,  C22C38/42 ,  C22C38/48 ,  C22C38/40

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)≤29,000 900° C.≤T1≤1,050° C., 10 seconds≤t1≤1,800 seconds,  formula (1) 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 T2≤550° C., and t2≤3,600 seconds,  formula (2) 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：US10415633B2

公开(公告)日：2019-09-17

申请号：US15551795

申请日：2016-02-02

Applicant: NHK Spring Co., Ltd.

Inventor： Shigeru Kuroda

IPC: F16C11/06 ,  B60G21/055

Abstract: A stabilizer link of the present invention includes connecting parts that has a housing which supports a ball stud to be connected to the first or second structure so as to be swingable and rotatable, wherein the ball stud has a stud part extending from a spherical part and the housing houses a support member to support a spherical part of the ball stud in a spherical space so as to be slidable, wherein the support member includes: an opening where the spherical space is open for the stud part; a lubricant receiving part in a concave shape that faces the opening; and a wall surface that forms the spherical space for the spherical part to slide thereon and has recessed grooves formed on both sides or one side of a portion of the wall surface having the maximum inner radius about the central axis of the spherical space.

公开(公告)号：US20190228953A1

公开(公告)日：2019-07-25

申请号：US16367643

申请日：2019-03-28

Applicant: NHK SPRING CO., LTD.

Inventor： Toshihiro TACHIKAWA ,  Naoya AIKAWA ,  Go TAKAHARA ,  Kohei SUZUKI ,  Hiroshi MITSUDA

IPC: H01J37/32 ,  H01L21/67 ,  H01L21/683 ,  H01J37/34 ,  C23C16/46 ,  C23C16/458 ,  C23C14/50

Abstract: Provided is a stage for precisely controlling a substrate temperature and a manufacturing method thereof. Alternatively, a film-forming apparatus or a film-processing apparatus having the stage is provided. The stage includes a base material and a heater layer over the base material. The heater layer has a first insulating film, a heater wire over the first insulating film, and a second insulating film over the heater wire. The heater wire includes more than one kind of metal selected from tungsten, nickel. chromium cobalt, and molybdenum.

公开(公告)号：US10320009B2

公开(公告)日：2019-06-11

申请号：US14901367

申请日：2014-06-30

Applicant: Nissan Motor Co., Ltd. ,  NHK Spring Co., Ltd.

Inventor： Yosuke Fukuyama ,  Takeshi Shiomi ,  Yusuke Terada ,  Norihiro Tajima

IPC: H01M8/247 ,  H01M8/0206 ,  H01M8/0247 ,  H01M8/0297 ,  H01M8/1018 ,  H01M8/2404

Abstract: A deformation absorption member for a fuel-cell-stack disposed between an anode side separator and a cathode side separator. The deformation absorption member includes a thin-board-like base material, and a plurality of raised pieces in which extension portions extended from proximal ends are arranged in a grid pattern. Each raised piece of the plurality of raised pieces is formed in a non-rectangular shape in which the width of the extension portion is shorter than the width of the proximal end, and plurality of raised pieces are configured so that the directions of the extension portions of mutually adjacent raised pieces are alternately arranged, and positions of the proximal ends of the mutually adjacent raised pieces are arranged in at least overlapping positions.

公开(公告)号：US10274517B2

公开(公告)日：2019-04-30

申请号：US15576605

申请日：2017-02-01

Applicant: NHK SPRING CO., LTD.

Inventor： Kohei Hironaka ,  Kazuya Souma ,  Satoshi Shoji ,  Ryosuke Yamaguchi

IPC: G01R31/28 ,  G01R1/067 ,  G01R31/26

Abstract: Provided is a conductive probe having a first end portion and a second end portion opposing the first end portion. The first end portion includes first to fourth linear ridges and first to fifth vertexes, and the first to fourth linear ridges are spaced from one another and arranged to form a cross. The first to fourth vertexes are located on an outer circumference of the first end portion and further arranged between the first linear ridge and the second linear ridge, between the second linear ridge and the third linear ridge, between the third linear ridge and the fourth linear ridge, and between the fourth linear ridge and the first linear ridge, respectively.