公开(公告)号：US10807215B2

公开(公告)日：2020-10-20

申请号：US16107629

申请日：2018-08-21

Applicant: NHK SPRING CO., LTD.

Inventor： Hideki Okada ,  Daisuke Yokota ,  Senri Moriyama ,  Satoshi Akiyama ,  Masaya Komazaki ,  Go Nagayasu

IPC: B24C1/10 ,  B24C3/24 ,  B24C9/00

Abstract: A coil spring processing device includes an end positioning device, shot peening device, and controller. The end positioning device positions ends of a coil spring. The shot peening device includes a turntable mechanism, pressure mechanism, rotation mechanism which rotates the coil spring, and projection mechanism which projects shots. Holding mechanisms each include a lower shifting prevention jig and an upper shifting prevention jig. The controller stops a first holding mechanism and a second holding mechanism in rotation stop positions corresponding to end turn portions of the coil spring.

公开(公告)号：US20200171910A1

公开(公告)日：2020-06-04

申请号：US16617761

申请日：2018-05-09

Applicant: NHK SPRING CO., LTD.

Inventor： Shigeru KURODA ,  Shuji OHMURA

IPC: B60G21/055 ,  F16C11/08

Abstract: A stabilizer link includes a support bar and a ball joint. The ball joint includes a ball stud having a ball portion and a stud portion. The stabilizer has two end portions, each of which includes an attachment portion for joining the stabilizer link. The attachment portion has a through hole, through which an elastic member provided at the stud portion is attached to the attachment portion. The elastic member includes a body portion and tab portions. The stud portion is joined to the attachment portion through the elastic member in such a manner that while the elastic member is attached to the through hole, the body portion abuts on an inner circumferential wall portion of the through hole and the tab portions are located to cover circumferential edge portions of the through hole.

公开(公告)号：US10654437B2

公开(公告)日：2020-05-19

申请号：US16017027

申请日：2018-06-25

Applicant: NHK SPRING CO., LTD.

Inventor： Satoshi Yaegashi ,  Tomoyuki Iyama ,  Akihiko Hoshino

IPC: B60R21/2165 ,  B60R21/207

Abstract: In the state in which the first reinforcing cloth and the second reinforcing cloth are in loops, two end portions of the first reinforcing cloth are sewn to the first skin, and two end portions of the second reinforcing cloth are sewn to the second skin. Thus, the first reinforcing cloth and the second reinforcing cloth are sewn to the first skin and the second skin, respectively, in two-layer states.

公开(公告)号：US20200072272A1

公开(公告)日：2020-03-05

申请号：US16495466

申请日：2018-03-02

Applicant: NHK Spring Co., Ltd.

Inventor： Noriyoshi Kaneda ,  Takeshi Suzuki

IPC: F16B33/02 ,  F16B33/06 ,  F16B35/04

Abstract: A fastening member includes a screw thread formed therein. A portion including a crest portion of the screw thread is formed of a first alloy material and includes: a thick portion where the portion is maximized in thickness in a circumferential direction; and a thin portion where the portion is minimized in thickness in the circumferential direction. A portion including a root of the screw thread is formed of a second alloy material having a tensile strength higher than that of the first alloy material.

公开(公告)号：US20190316230A1

公开(公告)日：2019-10-17

申请号：US15999785

申请日：2017-02-16

Applicant: NHK SPRING CO., LTD. ,  TOPURA CO., LTD.

Inventor： Noriyoshi KANEDA ,  Takeshi SUZUKI ,  Kouhei MIYAMOTO ,  Naoki HORIUCHI

IPC: C22C21/02 ,  C22F1/043 ,  C22C21/14 ,  C22C21/16 ,  C22C21/18 ,  C22C21/00 ,  C22F1/057

Abstract: An aluminum alloy contains 0.7% to 1.8% of silicon, 0.5% to 2.1% of copper, 0.4% to 1.8% of manganese, 0.6% to 1.6% of magnesium, and 0.1% to 0.7% of zinc in terms of mass ratio and the balance aluminum with inevitable impurities.

公开(公告)号：US10415110B2

公开(公告)日：2019-09-17

申请号：US15560273

申请日：2016-03-16

Applicant: NHK Spring Co., Ltd.

Inventor： Yutaka Wakabayashi ,  Ken Takahashi ,  Masato Sugawara ,  Hideki Okada

IPC: C21D9/08 ,  B21D53/88 ,  B60G21/055 ,  B21D7/00 ,  B21D7/16 ,  C21D1/60 ,  C23C8/46

Abstract: A method of manufacturing a hollow stabilizer includes a forming step of subjecting an element pipe to a bending process, to form a product shape including bent portions, and a quenching step of quenching the element pipe subjected to the bending process. In the quenching step, a cooling process is performed by immersing the element pipe made of steel in coolant and by spraying the coolant to an outer surface of the bent portion.

公开(公告)号：US10411386B2

公开(公告)日：2019-09-10

申请号：US15501592

申请日：2015-08-07

Applicant: NHK Spring Co., Ltd.

Inventor： Toshio Kazama ,  Kazuya Souma

IPC: H01R13/24 ,  G01R1/067 ,  G01R1/04

Abstract: A conductive connection terminal is extensible and compressible in a longitudinal direction, and includes: a first contact member including a first tip portion configured to contact with one electrode of a contact target, and a first base end portion; a second contact member including a second tip portion configured to contact with another electrode of the contact target, and a plurality of tongue parts configured to contact with the first base end portion; an elastic member configured to extend and compress the first contact member and the second contact member in the longitudinal direction; and a load applying unit configured to apply a load to the tongue parts in a direction bringing the tongue parts into contact with an outer circumference of the first base end portion.

公开(公告)号：US10381028B2

公开(公告)日：2019-08-13

申请号：US16150934

申请日：2018-10-03

Applicant: NHK SPRING CO., LTD.

Inventor： Yukie Yamada

IPC: G11B5/48

Abstract: A circuit member includes a metal base, an insulating layer, a conductor, and a cover layer. A termial portion of the circuit member includes a thick portion formed at a part of the insulating layer, a conductor convex portion which is a part of the conductor, and overlaps the thick portion, and a conductor extending portion. By the conductor convex portion and the conductor extending portion, a stepped side pad is formed. The stepped side gad includes a first surface along the conductor extending portion, and a second surface which rises in a thickness direction of the conductor extending portion. The stepped side pad and an element are connected by a conductive member.

公开(公告)号：US10359090B2

公开(公告)日：2019-07-23

申请号：US14238293

申请日：2012-07-26

Applicant: Kazuya Ikai ,  Tohru Shiraishi ,  Yuichiro Ono ,  Yoshiki Ono

Inventor： Kazuya Ikai ,  Tohru Shiraishi ,  Yuichiro Ono ,  Yoshiki Ono

IPC: C21D9/02 ,  C22C38/02 ,  C22C38/04 ,  F16F1/02 ,  B21F35/00 ,  C21D7/06 ,  C21D8/06 ,  C22C38/18 ,  C22C38/24 ,  C22C38/34 ,  C22C38/46 ,  F16F1/06 ,  B24C1/10

Abstract: A compression coil spring having high durability can be provided by using an inexpensive wire material. The present invention provides a compression coil spring formed by using a steel wire material, the steel wire material made of C: 0.45 to 0.85 mass %, Si: 0.15 to 2.5 mass %, Mn: 0.3 to 1.0 mass %, Fe and inevitable impurities as a remainder, and a circle-equivalent diameter of 1.5 to 9.0 mm, wherein hardness of a freely selected cross-section of the wire material is 570 to 700 HV, and at an inner diameter side of the coil spring, unloaded compressive residual stress at a depth of 0.2 mm from a surface in an approximate maximal main stress direction in a case in which compressive load is loaded on the spring is 200 MPa or more, and unloaded compressive residual stress at a depth of 0.4 mm from surface is 100 MPa or more.

公开(公告)号：US10358012B2

公开(公告)日：2019-07-23

申请号：US15560031

申请日：2016-01-27

Applicant: NHK Spring Co., Ltd.

Inventor： Tatsuya Nishimura

IPC: B60G21/02 ,  B60G21/055 ,  F16F1/14 ,  C21D1/18 ,  C21D1/40 ,  F16F1/16 ,  C21D1/10 ,  C21D1/42

Abstract: A stabilizer including: a main body for generating an elastic restoring force; and connecting portions formed on both ends of the main body and respectively connected to left and right suspension devices. Hardness of the connecting portions is lower than that of the main body. A method for manufacturing the stabilizer includes, in order, an entire body heat treatment process for heat treating an entire stabilizer and increasing hardness of the entire stabilizer, and a connecting portion softening process for heating the connecting portions and reducing the hardness of the connecting portions. The method for manufacturing the stabilizer thereby increases hardness of the main body and reduces the hardness of the connecting portions lower than that of the main body.