公开(公告)号：US20240413717A1

公开(公告)日：2024-12-12

申请号：US18704130

申请日：2022-10-31

Applicant: NHK SPRING CO., LTD.

Inventor： Shuji ANDO ,  Yuichiro JIN

IPC: H02K15/02 ,  B23P19/10

Abstract: A manufacturing method for a motor core that makes a laminated annular iron core involving an upper and a lower jigs, arranges the laminated annular iron core with respect to the push-out jig and a loading jig so as to escape tip ends of positioning pins in place of the upper jig, while applying load onto the push-out jig using the loading jig, pushes out the laminated annular iron core with respect to the positioning pins.

公开(公告)号：US20240351224A1

公开(公告)日：2024-10-24

申请号：US18291910

申请日：2022-07-20

Applicant: NHK SPRING CO., LTD.

Inventor： Takafumi HIRATA ,  Yuki HOTODA ,  Yuki HAYAKAWA ,  Yuta ISHIYAMA

IPC: B25J18/06

CPC classification number: B25J18/06

Abstract: A flexible structure includes a first member, a second member, a recess, and a wire. The first member is capable of flexing and extending. The second member covers an outer circumference of the first member and is capable of flexing and extending in conjunction with the first member. The recess is provided at an inner circumference of the second member. The wire is held between the first member and the second member in a state in which at least a part of the wire is inserted into the recess in the radial direction.

公开(公告)号：US20240272201A1

公开(公告)日：2024-08-15

申请号：US18432205

申请日：2024-02-05

Applicant: NHK Spring Co., Ltd.

Inventor： Yoshio Yamada ,  Shuji Takahashi ,  Jun Kinoshita

IPC: G01R3/00 ,  G01R1/067

CPC classification number: G01R3/00 ,  G01R1/06722

Abstract: A method of manufacturing a contact probe includes: forming external shapes of a plurality of main body part base materials on a plate material, each of the plurality of main body part base materials being connected to a base part via a connection part and used for forming a main body part of a pipe member; forming a plurality of protrusions on each of the plurality of main body part base materials; forming the pipe member by bending each of the plurality of main body part base materials into a C-shape such that the protrusions protrude toward an inner side of the pipe member; assembling the contact probe by inserting first and second plungers and a coil spring into the pipe member connected to the connection part; and cutting the pipe member from the connection part.

公开(公告)号：US20240235287A9

公开(公告)日：2024-07-11

申请号：US17768270

申请日：2020-10-01

Applicant: NHK SPRING CO., LTD.

Inventor： Yohei KAMEDA

IPC: H02K1/18

CPC classification number: H02K1/18 ,  H02K1/2706

Abstract: A stator core that is configured by stacking plural core plates and that is housed inside a case of a motor. The plural core plates include an elastic protrusion-equipped core plate provided with plural elastic protrusions arrayed in a circumferential direction. The elastic protrusions extend toward a radial direction outside from an outer peripheral portion of the elastic protrusion-equipped core plate and are bent in an axial direction. The stator core is supported by the case in a state in which the plural elastic protrusions are in contact with an inner peripheral face of the case and elastically flexed.

公开(公告)号：US20240229886A9

公开(公告)日：2024-07-11

申请号：US18278512

申请日：2022-02-25

Applicant: NHK SPRING Co., Ltd.

Inventor： Yoshio YAMADA ,  Hironobu IMAIZUMI ,  Norihiro TAJIMA ,  Shuji TAKAHASHI

IPC: F16F1/18

CPC classification number: F16F1/18

Abstract: A spring member is provided between two pressed bodies facing each other in a first direction and includes base plates stacked in the first direction. Each base plate is provided with spring protrusions protruding toward either one pressed body of the two pressed bodies and pressing the two pressed bodies in directions such that the pressed bodies move away from each other in the first direction. Between two base plates adjacent to each other in the first direction, a base plate positioned closer to the one pressed body is provided with an insertion hole into which a spring protrusion of the other base plate is inserted in a state of penetrating therethrough in the first direction. Among portions in an along-plane direction along a plane orthogonal to the first direction provided with the spring protrusions, the spring constant of at least one portion is different from that of another portion.

公开(公告)号：US12018704B2

公开(公告)日：2024-06-25

申请号：US16982250

申请日：2019-03-27

Applicant: NHK SPRING CO., LTD.

Inventor： Hiroshi Mizukami ,  Naohito Nakano ,  Mieko Yanagida

IPC: F15B1/04 ,  B21D22/20 ,  B21D51/24 ,  B23K26/21 ,  F15B1/10 ,  B21D35/00 ,  B21D51/16

CPC classification number: F15B1/04 ,  B21D22/20 ,  B21D51/24 ,  B23K26/21 ,  F15B1/103 ,  F15B1/106 ,  B21D35/006 ,  B21D51/16 ,  F15B2201/3153 ,  F15B2201/405 ,  F15B2201/4056 ,  F15B2201/605

Abstract: A shell member 10 constituting an accumulator 100 including a cover member 30, a shell member 10 having a cylindrical portion 11, an opening portion 13 formed at one end of the cylindrical portion 11 and welded to the cover member 30, and a closed portion 12 formed at another end of the cylindrical portion 11, and an accumulation part 70 accommodated in the shell member 10. The cylindrical portion 11 includes an upper end portion 11a, and a protruding portion 11c having the opening portion 13. The protruding portion 11c is thicker than the upper end portion 11a.

公开(公告)号：US12006994B2

公开(公告)日：2024-06-11

申请号：US17754667

申请日：2020-10-15

Applicant: NIPPON STEEL CORPORATION ,  NHK SPRING CO., LTD. ,  NIPPON STEEL SG WIRE CO., LTD.

Inventor： Shinya Teramoto ,  Yutaka Neishi ,  Michimasa Aono ,  Shuji Kozawa ,  Fumio Takahashi ,  Shigekazu Nishimoto ,  Mitsuhiro Kondo ,  Tatsuro Ochi ,  Shoichi Suzuki

IPC: F16F1/02 ,  C21D1/18 ,  C21D1/30 ,  C21D6/00 ,  C21D8/00 ,  C21D9/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C23C8/26

CPC classification number: F16F1/021 ,  C21D1/18 ,  C21D1/30 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D9/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C23C8/26 ,  C22C2202/02 ,  F16F2224/02

Abstract: A valve spring includes a nitrided layer, and a core portion that is further inward than the nitrided layer. A chemical composition of the core portion consists of, in mass %, C: 0.53 to 0.59%, Si: 2.51 to 2.90%, Mn: 0.70 to 0.85%, P: 0.020% or less, S: 0.020% or less, Cr: 1.40 to 1.70%, Mo: 0.17 to 0.53%, V: 0.23 to 0.33%, Ca: 0.0001 to 0.0050%, Cu: 0.050% or less, Ni: 0.050% or less, Al: 0.0050% or less, Ti: 0.050% or less, and N: 0.0070% or less, with the balance being Fe and impurities. In the core portion, a number density of V-based precipitates having a maximum diameter ranging from 2 to 10 nm is 500 to 8000 per μm2, and in the core portion, a numerical proportion of Ca sulfides with respect to a total number of oxide-based inclusions and sulfide-based inclusions is 0.20% or less.

公开(公告)号：US11998943B2

公开(公告)日：2024-06-04

申请号：US17200712

申请日：2021-03-12

Applicant: NHK SPRING CO., LTD.

Inventor： Akira Homma

IPC: B05C11/10 ,  B05C5/02 ,  B05D5/10 ,  B05C1/04 ,  H05K13/04

CPC classification number: B05C11/1005 ,  B05C5/0212 ,  B05C11/1013 ,  B05D5/10 ,  B05C1/04 ,  B05C5/0216 ,  H05K13/0469 ,  Y10T156/1798

Abstract: An application method of an application device configured to apply an adhesive to an object. The method includes applying, prior to applying the adhesive to a specified part of the object, the adhesive to a part different from the specified part, calculating an application quantity of the adhesive applied to the part different from the specified part, making a first correction configured to correct an application condition of the adhesive based on a result of the calculation, and applying the adhesive to the specified part using the application condition corrected in the first correction.

公开(公告)号：US11982309B2

公开(公告)日：2024-05-14

申请号：US17627300

申请日：2020-07-13

Applicant: NHK SPRING CO., LTD.

Inventor： Shigeru Kuroda ,  Yuya Nagata

IPC: F16C11/06

CPC classification number: F16C11/0623 ,  F16C11/0685

Abstract: A ball joint includes: a ball stud including a stud portion having one end portion connected to a structural member and another end portion, to which a ball portion is integrally joined; a housing made of metal and configured to support the ball portion to allow swinging and rotating movement of the ball portion; and a ball seat made of plastic and interposed between the housing and the ball portion. The ball seat includes a plurality of protrusions jutting out from the ball seat and inserted into a plurality of through holes formed in a bottom portion of the housing. The protrusions having pierced through the through holes are staked at their distal portions. The protrusion of the ball seat has a large diameter portion, whose diameter is larger than an inner diameter of the through hole, at its proximal portion proximal from the distal portion thereof.

公开(公告)号：US20240138034A1

公开(公告)日：2024-04-25

申请号：US18404599

申请日：2024-01-04

Applicant: NHK SPRING CO., LTD.

Inventor： Atsuki YOSHIDA ,  Yuichiro YAMAUCHI ,  Hidetoshi MIZUTA

IPC: H05B6/10

CPC classification number: H05B6/101 ,  B60G21/005

Abstract: An induction heating device according to one embodiment includes a first coil portion and a second coil portion. A bar-shaped workpiece is placed between the first coil portion and the second coil portion. The first coil portion includes a pair of first narrow pitch portions formed in respective end portions thereof, a first wide pitch portion formed between the first narrow pitch portions, and a first medium pitch portion formed in the center. The second coil portion includes a pair of second narrow pitch portions formed in respective end portions, a second wide pitch portion formed between the second narrow pitch portions, and a second medium pitch portion formed in the center.