Patents Assigned to NHK Spring Co., Ltd.
  • Patent number: 9752636
    Abstract: The coil spring includes steel wire material containing 0.45 to 0.80 weight % of C, 0.15 to 2.50 weight % of Si, 0.3 to 1.0 weight % of Mn and iron and inevitable impurities as the remainder, and having a circle equivalent diameter of 2.5 mm to 10 mm, in which internal hardness at a freely selected cross section of the wire material is in a range of 570 to 700 Hv, C-condensed layer which exceeds average concentration of C contained in the steel wire material exists at surface layer part, and in an approximate maximum principal stress direction generated when a compressive load is loaded on spring of inner diameter side of the coil spring of the wire material, unloaded compressive residual stress at a depth of 0.2 mm and 0.4 min from surface of the wire material is not less than 200 MPa and not less than 60 MPa, respectively.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: September 5, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Yuitirou Ono, Tohru Shiraishi, Yoshiki Ono, Keita Takahashi
  • Publication number: 20170236540
    Abstract: A flexure mounted on a load beam of a disk drive suspension, including a metal base formed of a stainless-steel plate; and a conductive circuit arranged along the metal base. The conductive circuit includes an insulating layer on the metal base; and a conductor on the insulating layer. The conductor includes a thin conductor portion formed in a first region (A1) which is part of the conductive circuit in a longitudinal direction; and a thick conductor portion formed in a second region (A2) which is another part of the conductive circuit in the longitudinal direction, the thick conductor portion being thicker than the thin conductor portion. The flexure includes a flexure tail portion having an opening formed in the metal base; a bent portion of the metal base which is bent in a thickness direction at the opening; and a trace curved portion curved in the thickness direction at a position facing the opening. The trace curved portion includes the thick conductor portion.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 17, 2017
    Applicant: NHK SPRING CO., LTD.
    Inventor: Sei KAWAO
  • Patent number: 9721598
    Abstract: A terminal pad of a flexure for a head suspension connected to a functional part through a bonding material includes a terminal body, a base plating formed on a surface of the terminal body and having an uniform thickness, a padding plating made of a same material as the base plating and integrated with the base plating so that the padding plating swells with respect to the base plating, and a surface plating formed on a surface of the padding plating.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 1, 2017
    Assignee: NHK Spring Co., Ltd.
    Inventors: Sei Kawao, Yukie Yamada
  • Patent number: 9718385
    Abstract: There is provided a vehicle seat including a seatback frame including: a first base member formed of a thin plate member made of resin; a second base member formed of a thin plate member made of resin and disposed facing the first base member; a pass-through portion that is formed to at least one of the first base member or the second base member, and that enables insertion of an injection nozzle for injecting a foaming liquid for a foamed body; and a core section that is configured by the foamed body, that is disposed between the first base member and the second base member, and that is adhered to the first base member and the second base member.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: August 1, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventor: Kenzo Yasuda
  • Patent number: 9713946
    Abstract: A strut-type suspension includes a compression coil spring, a lower spring seat, an upper spring seat, and a shock absorber. The compression coil spring is disposed at a position offset to the outer side of a vehicle with respect to the shock absorber. The compression coil spring is mounted in a vehicle body in such a state that it is compressed between spring seats. The compression coil spring includes a large-diameter wire portion and a small-diameter wire portion. The large-diameter wire portion is provided in a vehicle inner-side portion of the compression coil spring. The small-diameter wire portion is provided in a vehicle outer-side portion. A wire diameter of the large-diameter wire portion is greater than a wire diameter of the small-diameter wire portion.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: July 25, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Kenji Yamamotoya, Hideto Enomoto, Ken Takahashi, Toshiaki Sato, Mitsuhiro Sugiyama, Yoshio Kobayashi, Taichi Inage, Tomotake Kato, Akihiko Nishikawa, Masahiro Umezawa, Michihiko Ayada, Suguru Kajigaya
  • Patent number: 9702905
    Abstract: The probe unit includes probe groups of two or more contact probes to be in contact with one electrode of a contact target body on a side of one end in a longitudinal direction and the respective contact probes are to be in contact with separate electrodes of a board on a side of another end. The contact probe includes an end portion arranged on the side of one end, having nail portions in a tapered end shape, and brought into contact with the one electrode at the nail portions; a second contact unit arranged on the side of another end, and to be in contact with a corresponding electrode of the board; and a coil spring arranged between the end portion and the second contact unit, and biasing the end portion and the second contact unit.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: July 11, 2017
    Assignee: NHK Spring Co., Ltd.
    Inventors: Yoshio Yamada, Makoto Yumino, Mitsuhiro Kondo, Satoshi Shoji
  • Patent number: 9689405
    Abstract: A hydraulic accumulator includes a shell, a bellows, and a self-seal stay disposed at a hydraulic-fluid inlet and including a cylindrical body portion open to a hydraulic chamber and a lid-shaped head portion defining a through hole. The self-seal stay includes a first weakened portion for deforming the body portion when a pressure of the gas chamber is more than a given threshold. The first weakened portion includes a first recessed portion formed in a circumferential direction of the body portion. The first recessed portion includes a bottom surface of a plane surface or a circular arc shaped curved surface which is convex toward outside of the body portion from inside thereof. At least one of both end portions of the bottom surface in the circumferential direction is joined with an outer circumferential surface of the body portion.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 27, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventor: Hiroshi Mizukami
  • Patent number: 9688090
    Abstract: An identification medium can be used in an opening label, clearly show signs of it having been opened, and also have a superior authenticity-confirming function. The identification medium has a structure including, in the following order as seen from the side of observation: an optical function layer that generates a color shift, a separation layer that is partially formed, a printed layer, and an adhesive layer, in which when an adhesive strength between the adhesive layer and an adherend is set to be Xa, an adhesive strength between the adhesive layer and the printed layer is set to be Xb, and an adhesive strength at a portion in which the separation layer is laminated between the optical function layer and the printed layer is set to be Xc, the adhesive strength of each part is set to satisfy Xa>Xb>Xc or Xb>Xa>Xc.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: June 27, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tokio Sakauchi, Tooru Ida, Shinei Suzuki
  • Patent number: 9689051
    Abstract: A hollow seamless pipe for a high-strength spring with reduced occurrence of decarburization in the inner and outer peripheral surfaces, hardened surface layers in the inner and outer peripheral surfaces during quenching, and sufficient fatigue strength is provided. The hollow seamless pipe contains a steel material, which includes 0.2 to 0.7 mass % of C, 0.5 to 3 mass % of Si, 0.1 to 2 mass % of Mn, more than 0 and 0.1 mass % or less of Al, more than 0 and 0.02 mass % or less of P, more than 0 and 0.02 mass % or less of S, and more than 0 and 0.02 mass % or less of N. The C content in the inner and outer peripheral surfaces is 0.10 mass % or more. A thickness of a whole decarburized layer in each of the inner peripheral surface and the outer peripheral surface is 200 ?m or less.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: June 27, 2017
    Assignees: Kobe Steel, Ltd., SHINKO METAL PRODUCTS CO., LTD., NHK SPRING CO., LTD.
    Inventors: Hitoshi Hatano, Kotaro Toyotake
  • Publication number: 20170174030
    Abstract: According to one embodiment, a vehicle suspension member includes a body of a vehicle suspension member made of a metal, a first layer provided to cover a surface of the body and a second layer provided to cover at least a portion of a surface of the first layer. The first layer includes an epoxy resin, and the second layer includes an epoxy resin and a fluororesin.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 22, 2017
    Applicant: NHK SPRING CO., LTD.
    Inventors: Mitsuo MORI, Tatsuya NISHIMURA, Masayoshi TANAKA
  • Patent number: 9679592
    Abstract: A suspension includes a load beam and a flexure. The flexure has a metal base and a conductive circuit portion. The conductive circuit portion has an insulating layer formed on the metal base, and a conductor formed on the insulating layer. The conductive circuit portion includes a first region which constitutes a part of the conductive circuit portion in the longitudinal direction, and a second region which constitutes another part of the same in the longitudinal direction. The conductor includes a thin conductor portion having a first thickness arranged in the first region, and a thick conductor portion having a second thickness arranged in the second region. The second thickness is greater than the first thickness.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 13, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventor: Sei Kawao
  • Publication number: 20170157744
    Abstract: A vertical motion impeller-type shot peening device performs a second shot peening to a coil spring including first shot peening indentations. The vertical motion impeller-type shot peening device includes a workpiece holding mechanism including a lower end turn support and an upper end turn support, a stress applying mechanism which compresses the coil spring, a rotation mechanism, and a projection mechanism which includes a pair of vertically movable impeller units. A first rough surface including first shot peening indentations is formed on a part of end turn portions of the coil spring. A second rough surface including second shot peening indentations is formed on the entire surface of wire except for the first rough surface.
    Type: Application
    Filed: February 16, 2017
    Publication date: June 8, 2017
    Applicant: NHK SPRING CO., LTD.
    Inventors: Senri MORIYAMA, Satoshi AKIYAMA, Masaya KOMAZAKI, Go NAGAYASU, Hideki OKADA, Daisuke YOKOTA
  • Patent number: 9656579
    Abstract: A headrest comprising a pad member that includes a recess shaped housing portion open to a rear side when the headrest is assembled to a vehicle seat and that is a resilient body that supports the head of an occupant; and an attachment member that has a portion housed in the housing portion, that is formed with an opening portion for attaching a display device to, and that further has an outer peripheral portion of the opening portion that is disposed further to the rear side than the pad member.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: May 23, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Shinichi Nakata, Tomohiro Hirose, Masaharu Sanpei
  • Publication number: 20170130288
    Abstract: A steel has a predetermined chemical composition with a balance being Fe and incidental impurities, wherein a sum of Cu content and Ni content is 0.15 mass % or more, and a crystal grain size after forming into a stabilizer shape and quenching is in a range of 7.5 to 10.5 in prior austenite crystal grain size number. Thus, a highly durable stabilizer steel that has a tensile strength of 1200 MPa or more and excellent normal-temperature and low-temperature toughness and is used in an environmentally friendly manufacturing process at lower cost can be realized.
    Type: Application
    Filed: March 23, 2015
    Publication date: May 11, 2017
    Applicants: JFE Bars & Shapes Corporation, NHK SPRING CO., LTD.
    Inventors: Kazuaki FUKUOKA, Kunikazu TOMITA, Akira TANGE, Kiyoshi KURIMOTO, Yurika GOTO
  • Patent number: 9643444
    Abstract: An identification medium can be affixed to cloth or leather products by sewing. A cholesteric liquid crystal layer on which an embossed surface for forming a hologram is formed, is sandwiched between a first supporting member and a second supporting member. A mounting region that can be affixed to clothing, etc., by sewing, is formed.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 9, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Tohru Ida, Seiya Shibuya
  • Patent number: 9638650
    Abstract: A piezoelectric element feeder for feeding a piezoelectric element, includes a drawing unit that draws a first electrode surface of the piezoelectric element with use of negative pressure and transfers the piezoelectric element onto the actuator attaching part and a probe movably supported with the drawing unit and used to measure electric characteristics of the piezoelectric element. A front end of the probe is brought into contact with the first electrode surface when or just before the drawing unit draws the first electrode surface, to enable a measurement of the electric characteristics of the piezoelectric element.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: May 2, 2017
    Assignee: NHK Spring Co., Ltd.
    Inventor: Mikio Arai
  • Patent number: 9630696
    Abstract: According to one embodiment, a shift actuator includes a main body section and a shaft section. The main body section has an electric motor which has a vertically extending rotating shaft, and a gear mechanism which rotates the shaft section in accordance with the rotating shaft. The shaft section has a threaded shaft extending parallel to the rotating shaft and made to rotate by the gear mechanism in accordance with the rotating shaft and a movable nut which is screwed onto the threaded shaft and moves upward or downward with rotation of the threaded shaft. The movable nut is connected with a shift member which changes the gears of a propeller shaft.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: April 25, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventor: Sachio Ooshita
  • Patent number: D786172
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: May 9, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Masaya Komazaki, Go Nagayasu
  • Patent number: D787421
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: May 23, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Masaya Komazaki, Go Nagayasu
  • Patent number: D788018
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: May 30, 2017
    Assignee: NHK SPRING CO., LTD.
    Inventors: Masaya Komazaki, Go Nagayasu