公开(公告)号：US12188977B2

公开(公告)日：2025-01-07

申请号：US17911827

申请日：2021-03-17

Applicant: NHK Spring Co., Ltd.

Inventor： Tsuyoshi Inuma ,  Shuji Takahashi ,  Kazuya Soma ,  Takashi Nidaira ,  Yuya Hironaka

IPC: G01R1/073 ,  G01R1/04 ,  G01R1/067 ,  G01R31/28

Abstract: A probe unit includes: a plurality of first contact probes each coming into contact with an electrode to be contacted on one end side in a longitudinal direction; a second contact probe connected to an external ground; and a probe holder configured to hold the first and second contact probes, the probe holder including a first hollow portion configured to allow the first contact probes to be inserted therethrough and hold the first contact probes, a second hollow portion configured to allow the second contact probe to be inserted therethrough and hold the second contact probe, and a through-hole provided around the first hollow portion, wherein the probe holder includes a conductive portion that constitutes the through-hole and electrically connects the through-hole and the second contact probe.

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：US11320461B2

公开(公告)日：2022-05-03

申请号：US16629147

申请日：2018-07-12

Applicant: NHK Spring Co., Ltd.

Inventor： Kohei Hironaka ,  Tsuyoshi Inuma ,  Shuji Takahashi

IPC: G01R1/073 ,  G01R1/067 ,  G01R31/28 ,  H01R13/24 ,  H01R13/6473

Abstract: A probe unit includes: a plurality of contact probes each of which has one end that is brought into contact with a contacting electrode, the one end being an end in a longitudinal direction; a first ground member connected to an external ground; a second ground member provided around each of the contact probes; a connecting member electrically connected to the first ground member, and electrically connected to one end of the second ground member; and a probe holder configured to hold the contact probes, the first ground member, the second ground member and the connecting member.

公开(公告)号：US10794455B2

公开(公告)日：2020-10-06

申请号：US16529137

申请日：2019-08-01

Applicant: DAIDO KOGYO CO., LTD. ,  NHK SPRING CO., LTD.

Inventor： Hideaki Seki ,  Yoshio Yamada ,  Takao Kobayashi ,  Kazuhito Hiraoka ,  Shuji Takahashi

IPC: F16H7/08

Abstract: A tensioner includes a power spring, and a backup member being in contact with the power spring and supporting the power spring by acting an urging force in a direction opposite to a radial shift of the power spring in a direction in which the power spring is wound. The power spring is unwound in a condition in which an inter-plate frictional force of the power spring is small in a case where an urging force acting from a power spring to a tension member is greater than a load acting from the tensioner arm to the power spring and the power spring is wound in a condition in which the inter-plate frictional force of the power spring is large in a case where the urging force acting from the power spring to the tension member is smaller than the load acting from the tension member to the power spring.

公开(公告)号：US20200225265A1

公开(公告)日：2020-07-16

申请号：US16629147

申请日：2018-07-12

Applicant: NHK Spring Co., Ltd.

Inventor： Kohei Hironaka ,  Tsuyoshi Inuma ,  Shuji Takahashi

IPC: G01R1/073 ,  G01R31/28 ,  H01R13/6473 ,  H01R13/24 ,  G01R1/067

Abstract: A probe unit includes: a plurality of contact probes each of which has one end that is brought into contact with a contacting electrode, the one end being an end in a longitudinal direction; a first ground member connected to an external ground; a second ground member provided around each of the contact probes; a connecting member electrically connected to the first ground member, and electrically connected to one end of the second ground member; and a probe holder configured to hold the contact probes, the first ground member, the second ground member and the connecting member.

公开(公告)号：US11994535B2

公开(公告)日：2024-05-28

申请号：US17294844

申请日：2019-11-26

Applicant: NHK Spring Co., Ltd.

Inventor： Tsuyoshi Inuma ,  Shuji Takahashi

IPC: G01R1/04 ,  G01R1/067 ,  G01R1/073 ,  G01R31/26 ,  G01R31/28

CPC classification number: G01R1/07371 ,  G01R1/06722 ,  G01R1/06772 ,  G01R31/2886

Abstract: A probe unit includes: a first contact probe configured to come in contact with a signal electrode; a second contact probe configured to come in contact with a ground electrode; a probe holder including a first holder hole through which the first contact probe passes, and a second holder hole through which the second contact probe passes; and a conductive floating member including a first through hole to which the first contact probe is inserted and the signal electrode is inserted, and a second through hole to which the second contact probe is inserted and the ground electrode is inserted. The probe holder is configured such that at least an inner circumferential surface of the first holder hole has an insulating property, and the probe unit has a coaxial structure in which central axes of the first contact probe and the first through hole are aligned with each other.

公开(公告)号：US11940465B2

公开(公告)日：2024-03-26

申请号：US17437152

申请日：2020-03-12

Applicant: NHK Spring Co., Ltd.

Inventor： Kazuya Soma ,  Masahiro Takahashi ,  Shuji Takahashi

IPC: G01R1/073 ,  H01R12/71 ,  H01R13/24

CPC classification number: G01R1/07307 ,  H01R13/2421 ,  H01R12/714 ,  H01R2201/20

Abstract: A contact probe includes a first plunger, a second plunger, a coil spring, and a pipe; the first plunger includes a first slide portion that slides along the inner periphery of the pipe; the second plunger includes a second slide portion that slides along the inner periphery of the pipe; and the coil spring includes: a first attachment portion that is attached to the first plunger and tightly wound; a second attachment portion that is attached to the second plunger and tightly wound; a coarsely wound portion; a first contact portion including one end connected to the first attachment portion and another end connected to the coarsely wound portion and contacting the pipe; and a second contact portion including one end connected to the coarsely wound portion and another end connected to the second attachment portion and contacting to the pipe.

公开(公告)号：US11898635B2

公开(公告)日：2024-02-13

申请号：US17263862

申请日：2019-07-31

Applicant: NHK SPRING CO., LTD. ,  DAIDO KOGYO CO., LTD.

Inventor： Yoshio Yamada ,  Takao Kobayashi ,  Kazuhito Hiraoka ,  Shuji Takahashi ,  Hideaki Seki

IPC: F16H7/08

CPC classification number: F16H7/08 ,  F16H7/0848 ,  F16H2007/081 ,  F16H2007/0802 ,  F16H2007/0804 ,  F16H2007/0806 ,  F16H2007/0853 ,  F16H2007/0863 ,  F16H2007/0872 ,  F16H2007/0893

Abstract: A tensioner includes a movable section, a fixed section, a flat spiral spring, and a back-up spring. The movable section receives load from an entrained transmission body through a tension member. The fixed section supports the movable section so as to be capable of displacing. The flat spiral spring biases the movable section so as to resist the tension member. The flat spiral spring unwinds in a state in which there is a small inter-plate friction force in cases in which there is a large biasing force applied to the tension member to counter load acting from the tension member. The flat spiral spring winds-up in a state in which there is a large inter-plate friction force in cases in which there is a small biasing force applied to the tension member to counter load acting from the tension member. The back-up spring limits wind-up of the flat spiral spring.