Patents Assigned to NHK Spring Co., Ltd.
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Publication number: 20250026032Abstract: A flexural structure, in which a multi-structured flexible body is capable of displacing from an extended state to a flexed state, includes: an outer coil spring, constituting the multi-structured flexible body; an inner coil spring, provided inside the outer coil spring and having a wire overlap a wire of the outer coil spring in a coil radial direction to constitute the multi-structured flexible body; a one-side receiving member, receiving one side of the multi-structured flexible body; and an other-side receiving member, receiving an other side of the multi-structured flexible body. A close-contact state between wires of the inner and outer coil springs and is set in accordance with a spacing between the one-side receiving member and the other-side receiving member.Type: ApplicationFiled: November 25, 2022Publication date: January 23, 2025Applicant: NHK SPRING CO., LTD.Inventors: Takafumi HIRATA, Yuki HOTODA, Yuki HAYAKAWA
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Patent number: 12202134Abstract: A bending operation mechanism comprises: an elastically bendable driving part; an elastically bendable driven part that is provided separate from the driving part; and a linking part that connects the driving part and the driven part, and tensions and bends the driven part in accordance with bending of the driving part. The driving part and the driven part each comprise an inner coil part and an outer coil part that are bendable with respect to the axial direction, and wound parts corresponding to the inner coil part are respectively fitted to pitches between adjacent wound parts of the outer coil part.Type: GrantFiled: October 29, 2021Date of Patent: January 21, 2025Assignee: NHK SPRING CO., LTD.Inventors: Takafumi Hirata, Yuki Hotoda, Masahiro Inaba
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Patent number: 12202002Abstract: An application method for applying an adhesive to an object 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 basis of a result of the calculation, and applying the adhesive to the specified part using the application condition corrected in the first correction.Type: GrantFiled: October 18, 2022Date of Patent: January 21, 2025Assignee: NHK SPRING CO., LTD.Inventor: Akira Homma
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Publication number: 20250010406Abstract: A work piece includes a weld. A management device includes a camera, a control unit, and a database. Information on the work piece and a product ID are linked to each other and stored in the database. The weld of the work piece is captured and a nugget pattern thereof is subjected to image processing to obtain pattern data. The pattern data is linked to the product ID and stored in the database. A weld of a work piece with an unknown product ID is captured and a nugget pattern is subjected to image processing to obtain check data. This check data is checked against the existing pattern data, and when the matching data and the existing pattern data match, the product ID linked to the existing pattern data is acquired.Type: ApplicationFiled: June 24, 2024Publication date: January 9, 2025Applicant: NHK SPRING CO., LTD.Inventor: Osamu IRIUCHIJIMA
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Publication number: 20250014597Abstract: A suspension includes a first actuator arrangement portion and a second actuator arrangement portion. The first actuator arrangement portion includes a load beam frame portion formed of a part of the load beam. Both ends of a first actuator element are supported by the load beam frame portion. The second actuator arrangement portion includes a second load beam frame portion formed of a part of the load beam and a thin plate frame portion formed of a metal base of a flexure. One end of the second actuator element is supported by the second load beam frame portion. The other end of the second actuator element is supported by the thin plate frame portion.Type: ApplicationFiled: September 26, 2024Publication date: January 9, 2025Applicant: NHK SPRING CO., LTD.Inventors: Tatsuhiko NISHIDA, Masao HANYA
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Patent number: 12188977Abstract: 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.Type: GrantFiled: March 17, 2021Date of Patent: January 7, 2025Assignee: NHK Spring Co., Ltd.Inventors: Tsuyoshi Inuma, Shuji Takahashi, Kazuya Soma, Takashi Nidaira, Yuya Hironaka
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Patent number: 12179543Abstract: A stabilizer is a stabilizer including: a main body cylinder portion which is elastically deformable and a pair of connection plate portions respectively connected to a pair of left and right suspension devices, wherein the connection plate portion includes a pair of base material portions located on both sides in the connection plate portion in a plate thickness direction T and an alloy oxide region which is disposed between the pair of base material portions and in which alloy oxides are scattered, and wherein crystal grains constituting the pair of base material portions straddle the alloy oxide region in the plate thickness direction and the pair of base material portions are joined.Type: GrantFiled: July 6, 2020Date of Patent: December 31, 2024Assignee: NHK SPRING CO., LTD.Inventors: Masato Inaba, Junichi Nakayama, Yuichiro Yamauchi
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Patent number: 12181012Abstract: A damper spring having an excellent fatigue limit is provided. A damper spring according to the present embodiment includes a nitrided layer formed in an outer layer, and a core portion that is further inward than the nitrided layer. The 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%, Cu: 0.050% or less, Ni: 0.050% or less, Al: 0.0050% or less, Ti: 0.050% or less, N: 0.0070% or less, and Nb: 0 to 0.020%, 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 pieces/?m2.Type: GrantFiled: October 15, 2020Date of Patent: December 31, 2024Assignees: NIPPON STEEL CORPORATION, AISIN CORPORATION, NHK SPRING CO., LTD., NIPPON STEEL SG WIRE CO., LTD.Inventors: Shinya Teramoto, Yutaka Neishi, Michimasa Aono, Shuji Kozawa, Yoichi Oi, Naoki Takabayashi, Junji Tanaka, Fumio Takahashi, Shigekazu Nishimoto, Mitsuhiro Kondo, Tatsuro Ochi, Shoichi Suzuki
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Publication number: 20240424848Abstract: A leaf spring device includes a leaf spring main body, a first eye portion, a second eye portion provided, and a connection piece, the first eye portion is connected to a vehicle body to be rotatable around a first axis, the second eye portion is connected to the connection piece to be rotatable around a second axis, a central region of the leaf spring main body supports an axle, the leaf spring main body is provided to be flexibly deformable upward, and a connection portion of the leaf spring main body, at which the leaf spring main body is connected to the second eye portion, is urged by an elastic restoring force of the connection piece in a direction in which the connection portion is displaced along the longitudinal direction at an initial stage of a process in which the leaf spring main body is flexibly deformed upward.Type: ApplicationFiled: November 1, 2022Publication date: December 26, 2024Applicant: NHK SPRING Co., Ltd.Inventors: Yusuke TANAKA, Takanori HAYASHI, Shinji IINO, Takamichi SANO
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Patent number: 12172563Abstract: A headrest includes a first configuration section comprising a hard urethane and formed with an indentation in a front face, the indentation enabling entry of a supported portion, and the supported portion being a location corresponding to an occipital bone of the head of the seated occupant; and a second configuration section comprising a soft urethane having a lower rigidity than the hard urethane, the second configuration section being provided at the indentation so as to be deformed by the supported portion. Part of the first configuration section, which is a bottom face of the indentation, is configured by a left-right pair of head support faces that support the supported portion and that are connected together at a connection location having a straight line shape. An angle formed between cross-sections of the left and right head support faces when sectioned along a plane perpendicular to the connection location is a first angle that is from 37.2° to 143°.Type: GrantFiled: March 15, 2023Date of Patent: December 24, 2024Assignee: NHK Spring Co., Ltd.Inventors: Chikanori Honda, Kousuke Suzuki
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Patent number: 12176012Abstract: An adhesive reactive to ultraviolet rays is applied to an actuator mounting portion of a suspension. An electrical conducting material is applied to a conductor and the like of the actuator mounting portion. When the adhesive is irradiated with ultraviolet rays, the viscosity of the adhesive is increased. A piezoelectric element is placed on the adhesive the viscosity of which is increased. Thereafter, the adhesive and the electrical conducting material are heated, whereby the adhesive and the electrical conducting material are cured.Type: GrantFiled: September 28, 2021Date of Patent: December 24, 2024Assignee: NHK SPRING CO., LTD.Inventor: Shogo Ogaki
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Patent number: 12159655Abstract: A base plate includes a plate body and a connection portion provided at the plate body. The connection portion includes a through hole gassing through the plate body in a thickness direction of the plate body, a plurality of protrusions provided along an edge of the through hole in a circumferential direction about a central axis of the through hole and inserted into an attachment hole provided in the arm, and an inner circumferential surface formed by the plurality of protrusions and the through hole. The inner circumferential surface includes a plurality of recesses formed between the plurality of protrusions.Type: GrantFiled: January 5, 2023Date of Patent: December 3, 2024Assignee: NHK SPRING CO., LTD.Inventors: Mikio Arai, Hiroshi Daifuku
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Publication number: 20240386908Abstract: A tape drive device includes a head member, a tape drive mechanism moving a tape, a suspension member supporting the head member, piezoelectric units, a drive voltage supply circuit applying a voltage to a piezoelectric element, and a controller. Each of the piezoelectric units includes a piezoelectric element. The controller determines a state of a head unit, based on a piezoelectric output generated at the piezoelectric element provided in the suspension member.Type: ApplicationFiled: April 19, 2024Publication date: November 21, 2024Applicant: NHK SPRING CO., LTD.Inventor: Mikio ARAI
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Publication number: 20240386914Abstract: A head driving device includes an actuator assembly driving a head member in a width direction of tape. The head driving device includes a first end support beam, a second end support beam, a first skew driving piezoelectric unit, and a second skew driving piezoelectric unit. The first end support beam is arranged between a first end portion of the head member in a length direction and a base member. The second end support beam is arranged between a second end portion of the head member in the length direction and the base member. The first skew driving piezoelectric unit and the second skew driving piezoelectric unit drive the head member around the Z-axis.Type: ApplicationFiled: April 19, 2024Publication date: November 21, 2024Applicant: NHK SPRING CO., LTD.Inventor: Gaku NASHIMOTO
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Publication number: 20240386907Abstract: A head driving device includes a base member, a head supporting member, a beam member, a piezoelectric unit, and a reinforcement member. The reinforcement member includes a first portion and a second portion. The first portion is arranged between a first end portion in a length direction of a head member and the base member. The second member is arranged between a second end portion in a length direction of the head member and the base member. The reinforcement member allows the head supporting member to move in a direction along a surface of tape and controls the head supporting member from moving in a thickness direction of the head member.Type: ApplicationFiled: April 19, 2024Publication date: November 21, 2024Applicant: NHK SPRING CO., LTD.Inventors: Ryo KUWATA, Gaku NASHIMOTO, Tatsuhiko NISHIDA, Mikio ARAI, Hiroshi NAKAYAMA, Isamu KUCHIWAKI
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Patent number: 12145488Abstract: A vehicle seat includes a seat cushion, a seatback, a headrest, and a head support section. The seat cushion is configured so as to support the buttocks of a seated occupant from a seat lower side. The seatback is configured so as to support the back of the seated occupant from a seat rear side. The headrest is configured so as to support the head of the seated occupant from the seat rear side. The head support section is provided to the headrest and is configured so as to support a location corresponding the occipital bone of the head of the seated occupant from a seat left-right direction, and is also configured so as to support the location in a forward direction and in a seat obliquely upward direction from the seat rear side.Type: GrantFiled: December 2, 2021Date of Patent: November 19, 2024Assignee: NHK SPRING CO., LTD.Inventors: Kazuhito Kato, Kousuke Suzuki, Chikanori Honda
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Patent number: 12139092Abstract: A seat back of a vehicle seat, including: a side frame provided inside a cushion member in which an accommodation portion is formed; a cover material that covers a surface of the cushion member; an airbag accommodated in a folded state in the accommodation portion; a cylindrical inflator provided in the accommodation portion; a first retaining cloth, one end portion of which is connected to a rupture portion; a second retaining cloth, one end portion of which is connected to the rupture portion; and a joining member that joins together the respective other end portions of the first retaining cloth and second retaining cloth at the accommodation portion, wherein, when viewed along an axis of the inflator, a front end portion of the side frame is disposed forward of the inflator and the joining member is disposed forward of a front end portion of the side frame.Type: GrantFiled: November 14, 2023Date of Patent: November 12, 2024Assignees: NHK Spring Co., Ltd., Subaru CorporationInventors: Kensuke Yoshiga, Hiroki Jineda, Takashi Kamibayashi, Masafumi Takano
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Patent number: 12134315Abstract: A fuel lid opener has: a case that is mounted to an outer peripheral surface of a side wall of a lid box at which a fuel lid is pivotally supported so as to be able to open and close; a lifter that is supported at the case so as to be able to rotate around an axis that runs along a plate surface direction of the fuel lid that is in a closed state, and that has an arm portion that extends in a rotation radial direction within the lid box, and a distal end portion of the arm portion engages with the fuel lid that is in the closed state from a reverse surface side; and a heart cam mechanism that is provided within the case, and that, each time the arm portion of the lifter is push-operated in one direction around the axis via the fuel lid, causes the lifter to alternately repeat rotation in one direction and in another direction around the axis, and that pushes the fuel lid open due to rotation of the lifter in the another direction.Type: GrantFiled: May 30, 2019Date of Patent: November 5, 2024Assignee: NHK SPRING CO., LTDInventors: Yoshihisa Tani, Ken Toriyama
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Patent number: 12131760Abstract: A suspension includes a first actuator arrangement portion and a second actuator arrangement portion. The first actuator arrangement portion includes a load beam frame portion formed of a part of the load beam. Both ends of a first actuator element are supported by the load beam frame portion. The second actuator arrangement portion includes a second load beam frame portion formed of a part of the load beam and a thin plate frame portion formed of a metal base of a flexure. One end of the second actuator element is supported by the second load beam frame portion. The other end of the second actuator element is supported by the thin plate frame portion.Type: GrantFiled: June 23, 2023Date of Patent: October 29, 2024Assignee: NHK SPRING CO., LTD.Inventors: Tatsuhiko Nishida, Masao Hanya
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Publication number: 20240355359Abstract: A cleaning device includes a support member supporting a suspension as a work, first piezoelectric elements arranged on the suspension, second piezoelectric elements arranged on the suspension, an oscillation signal generator and a blowing suction unit. The oscillation signal generator applies an oscillation signal to at least one of the piezoelectric elements and the second piezoelectric elements. A gas such as air is blown onto the suspension and a gas around the suspension is sucked by the blowing suction unit in a state where at least one of the piezoelectric elements is oscillated by the oscillation signal.Type: ApplicationFiled: March 26, 2024Publication date: October 24, 2024Applicant: NHK SPRING CO., LTD.Inventor: Eijiro FURUTA