公开(公告)号：US20200298286A1

公开(公告)日：2020-09-24

申请号：US16779786

申请日：2020-02-03

Applicant: NHK SPRING CO., LTD.

Inventor： Shohji KARAKI ,  Mitsuo URANO ,  Tomoya OSUMI ,  Shinpei KAKIUCHI

IPC: B08B3/02 ,  B08B3/04

Abstract: A nozzle cleaning apparatus has one cleaning liquid outlet to which a nozzle is attached, and the other cleaning liquid outlet to which a cleaning attachment is attached. The cleaning attachment includes a nozzle cover, and a cleaning holder attached to the nozzle cover. A cleaning chamber is formed in the nozzle cover. A cleaning liquid inflow chamber, an outer cleaning liquid ejection port, and a cleaning liquid discharge hole are formed in the cleaning holder. A cleaning liquid ejected in a first direction from the nozzle and a cleaning liquid ejected in a second direction from the outer cleaning liquid ejection portion toward the nozzle collide with each other near discharge portions inside the cleaning chamber.

公开(公告)号：US10773613B2

公开(公告)日：2020-09-15

申请号：US16374401

申请日：2019-04-03

Applicant: NHK SPRING CO., LTD.

Inventor： Takeshi Nakamura ,  Kenichi Katsube ,  Shu Kondou ,  Daisuke Tanaka

IPC: B60N2/427 ,  B60N2/16 ,  B60N2/10 ,  B60N2/75 ,  B60N2/20

Abstract: In a vehicle seat, a second parallel link mechanism is actuated in order to adjust an vertical position of a seat body with respect to a vehicle body, such that a first parallel link mechanism is moved up or down together with the seat body with respect to the vehicle body. In order to recline a seatback as an integral unit with a seat cushion, the first parallel link mechanism and the second parallel link mechanism are actuated such that an upper link is maintained in a predetermined orientation. The upper link is restricted from rotating relative to the armrest, and so the armrest is also maintained in a predetermined orientation.

公开(公告)号：US20200275554A1

公开(公告)日：2020-08-27

申请号：US16782191

申请日：2020-02-05

Applicant: NHK Spring Co., Ltd.

Inventor： Tomohiro KAWARABAYASHI

IPC: H05K3/00

Abstract: A method for producing a circuit board includes a first step of arranging a circuit alignment jig having a pierced portion for receiving a circuit conductor corresponding to a circuit pattern on an insulating layer formed on a metal substrate, a second step is inserting the circuit conductor into the pierced portion, and a third step is pressing the circuit conductor to the insulating layer together with the circuit alignment jig.

公开(公告)号：US20200156506A1

公开(公告)日：2020-05-21

申请号：US16577904

申请日：2019-09-20

Applicant: IMASEN ELECTRIC INDUSTRIAL CO., LTD. ,  NHK SPRING CO., LTD.

Inventor： Atsutoshi GOTO ,  Hiroyuki KOJIMA ,  Takanari MATSUMOTO ,  Kenichi KATSUBE ,  Daisuke TANAKA

IPC: B60N2/02 ,  B60N2/20 ,  B60N2/10

Abstract: A power seat device is configured to acquire a target associated position of a tilted position, corresponding to a current position of a seatback for allowing the seatback to reach an end position in a reclining range, and a seat to reach an end position in a tilting range simultaneously. Outputs of a reclining motor and a tilting motor are adjusted so that the tilted position coincides with the acquired target associated position.

公开(公告)号：US10589590B2

公开(公告)日：2020-03-17

申请号：US15942078

申请日：2018-03-30

Applicant: NHK SPRING CO., LTD.

Inventor： Yasuharu Sakurai ,  Yoshihiro Koshita ,  Akihiko Nishikawa ,  Akifumi Otani

IPC: B60G11/18 ,  B60G21/055 ,  B05C13/02 ,  B05D1/12

Abstract: A stabilizer includes a stabilizer main body, and eyes formed on both ends of the stabilizer main body. Through-holes are formed in fastening surfaces of the eyes, respectively. The stabilizer main body is covered with a main body coating film. The eye is covered with an eye coating film whose thickness is less than a thickness of the main body coating film. An inner surface of the through-hole is covered with an inner surface coating film. An incomplete coating portion is formed at a part of the inner surface of the through-hole in a circumferential direction. The incomplete coating portion is located on an extension of a straight line connecting a center of the through-hole and the center of gravity of the stabilizer main body in a side view of the stabilizer main body.

公开(公告)号：US10584408B2

公开(公告)日：2020-03-10

申请号：US15814892

申请日：2017-11-16

Applicant: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY ,  NHK SPRING CO., LTD.

Inventor： Wataru Nakao ,  Akira Tange ,  Koichi Tango ,  Morimichi Kai

IPC: C23C8/22 ,  C21D1/06 ,  C21D9/02 ,  C23C8/20 ,  F27B9/40 ,  F27B9/30 ,  F27D17/00 ,  F27B9/04 ,  C23C8/80

Abstract: A carburization device includes a heating furnace which heats a material, a transfer mechanism, an alcohol vapor generator, an alcohol vapor spraying portion, a quenching tank, and an exhaust heat intake tube. The transfer mechanism moves a plurality of materials. The alcohol vapor generator uses part of heat generated by the heating furnace as a heat source. As the alcohol vapor spraying portion repeats a vapor spraying step and a diffusion step a plurality of times in the heating furnace. In the vapor spraying step, by spraying alcohol vapor on the material which moves inside the heating furnace, carbon in the alcohol is adsorbed to the material. In the diffusion step, an interval for diffusing the carbon adsorbed to the material is taken.

公开(公告)号：US10583706B2

公开(公告)日：2020-03-10

申请号：US16231569

申请日：2018-12-23

Applicant: NHK SPRING CO., LTD.

Inventor： Akira Tange ,  Hideki Okada

IPC: B60G11/14 ,  B60G11/16 ,  C21D7/06 ,  F16F1/04 ,  C21D9/02

Abstract: A method of manufacturing a suspension coil spring includes forming first shot peening indentations on a surface of a wire by projecting first shots toward the wire and forming a compressive residual stress portion to which a compressive residual stress is imparted from the surface of the wire to a first depth, and projecting ball shots as second shots toward a lower end turn portion by an ultrasonic apparatus. A size of each ball shot is larger than a size of each first shot. The method includes forming second shot peening indentations on a surface of the lower end turn portion, and a deep residual stress portion in the lower end turn portion, a compressive residual stress of the deep residual stress portion imparted from the surface of the wire to a second depth that is deeper than the first depth.

公开(公告)号：US20200049168A1

公开(公告)日：2020-02-13

申请号：US16492708

申请日：2018-01-25

Applicant: NHK SPRING CO., LTD.

Inventor： Hiroshi MIZUKAMI ,  Ippei IWAI ,  Mieko YANAGIDA

IPC: F15B1/10 ,  F16L55/053

Abstract: An accumulator includes a pressure vessel and a partition portion separating an interior space of the pressure vessel into a liquid chamber and a gas chamber so that a volume ratio between the liquid chamber and the gas chamber in the pressure vessel is variable. The pressure vessel includes a first section including a thread portion for fastening the accumulator to a support member and a second section joined to the first section and formed by a single piece including a tool engagement portion capable of engaging with a tool for rotating the accumulator. The first section and the second section are fitted together by mating portions coaxial with the thread portion and the tool engagement portion.

公开(公告)号：US20200039317A1

公开(公告)日：2020-02-06

申请号：US16497988

申请日：2018-03-23

Applicant: NHK SPRING CO., LTD.

Inventor： Shigeru KURODA

IPC: B60G21/055 ,  F16C11/06

Abstract: The ball joint manufacturing method for manufacturing a ball joint including a ball stud which includes a substantially spherical metal ball section, and a resin housing rotatable accommodating the ball section of the ball stud, includes: a step of forming the housing to cover an outer periphery of the ball section; an induction heating step of subjecting the ball section to induction heating in a state in which the ball section is accommodated in an accommodation section of the housing until the temperature of the ball section reaches a predetermined target temperature; and a cooling step of cooling the ball section which has been subjected to the induction heating, wherein a torque adjustment step including the induction heating step and the cooling step is repeatedly performed.

公开(公告)号：US20200023707A1

公开(公告)日：2020-01-23

申请号：US16586692

申请日：2019-09-27

Applicant: NHK SPRING CO., LTD.

Inventor： Norihiro KAWAKAMI ,  Yurika OKUDAIRA ,  Yuushi NOGAMI

IPC: B60G21/055 ,  F16F1/14 ,  B21D7/024

Abstract: A hollow stabilizer includes a curved part having eight regions defined in a cross section. A first region includes a 90° first part when the center of the inside of the curve is taken to be at 0° and the center of the outside of the curve is taken to be at 180°. A third region includes a 0° third part. A fifth region includes a 270° fifth part. A seventh region includes a 180° seventh part. The radii of curvature of the respective outer surfaces of the third part and the seventh part are larger and the radii of curvature of the respective outer surfaces of the second part and the sixth part are smaller than the radii of curvature of the respective outer surfaces of the fourth part and the fifth part.