Patents Assigned to NHK Spring Co., Ltd.
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Patent number: 10829008Abstract: A vehicle seat that includes: a cushion frame rear portion that is rotatable around a rear portion shaft, whose axial direction is a seat transverse direction, with respect to a vehicle body floor portion; a cushion frame front portion that is connected to the cushion frame rear portion so as to be rotatable around a center fold shaft whose axial direction is the seat transverse direction and that is positioned further toward a seat front side than the rear portion shaft; a seatback frame that stands erect from a rear end side of the cushion frame rear portion; and a driving mechanism that moves the cushion frame front portion and the cushion frame rear portion relatively in a seat vertical direction between a non-reclining state and a reclining state, in which the cushion frame rear portion tilts downward and rearward with respect to the cushion frame front portion.Type: GrantFiled: March 27, 2019Date of Patent: November 10, 2020Assignee: NHK Spring Co., Ltd.Inventors: Yoshitaka Sasaki, Akira Honma, Kenichi Katsube, Daisuke Tanaka, Shunichiro Osa, Takuma Oki
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Patent number: 10807215Abstract: A coil spring processing device includes an end positioning device, shot peening device, and controller. The end positioning device positions ends of a coil spring. The shot peening device includes a turntable mechanism, pressure mechanism, rotation mechanism which rotates the coil spring, and projection mechanism which projects shots. Holding mechanisms each include a lower shifting prevention jig and an upper shifting prevention jig. The controller stops a first holding mechanism and a second holding mechanism in rotation stop positions corresponding to end turn portions of the coil spring.Type: GrantFiled: August 21, 2018Date of Patent: October 20, 2020Assignee: NHK SPRING CO., LTD.Inventors: Hideki Okada, Daisuke Yokota, Senri Moriyama, Satoshi Akiyama, Masaya Komazaki, Go Nagayasu
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Patent number: 10808784Abstract: The coil spring according to the present invention is a coil spring that is formed by spirally winding a wire rod and that includes a core that is elastically deformable and a reinforced fiber layer including reinforcing fibers wound around an outer circumference of the core and a thermoset resin that firmly adheres the reinforcing fibers to one another, wherein, in at least a part of a surface layer of the reinforced fiber layer, a content percentage of the reinforcing fibers on an inner circumferential side of the coil spring is larger than a content percentage of the reinforcing fibers on an outer circumferential side of the coil spring.Type: GrantFiled: March 7, 2017Date of Patent: October 20, 2020Assignee: NHK Spring Co., Ltd.Inventors: Yoshiki Ono, Kazuhiko Konomi, Takamichi Sano, Masaru Imamura, Toshiaki Maruichi
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Patent number: 10794455Abstract: 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.Type: GrantFiled: August 1, 2019Date of Patent: October 6, 2020Assignees: DAIDO KOGYO CO., LTD., NHK SPRING CO., LTD.Inventors: Hideaki Seki, Yoshio Yamada, Takao Kobayashi, Kazuhito Hiraoka, Shuji Takahashi
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Patent number: 10792683Abstract: A paint spraying apparatus includes a supporting structure, a lower nozzle unit, and an upper nozzle unit. The lower nozzle unit includes lower flexible tubes and nozzles, and ejects powder paint toward an eye portion on a lower side of a stabilizer. The upper nozzle unit includes a first frame and a second frame. First flexible tubes are arranged on the first frame. Second flexible tubes are arranged on the second frame. The upper nozzles eject the powder paint toward an eye portion on an upper side of the stabilizer.Type: GrantFiled: April 17, 2018Date of Patent: October 6, 2020Assignee: NHK SPRING CO., LTD.Inventors: Yasuharu Sakurai, Yoshihiro Koshita, Akifumi Otani
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Publication number: 20200298286Abstract: 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.Type: ApplicationFiled: February 3, 2020Publication date: September 24, 2020Applicant: NHK SPRING CO., LTD.Inventors: Shohji KARAKI, Mitsuo URANO, Tomoya OSUMI, Shinpei KAKIUCHI
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Patent number: 10777223Abstract: The present invention provides a method of feeding an agent, capable of stabilizing a remaining agent of a feeding part in characteristic and amount just before definitively feeding an agent to each definitive portion. The method includes intermittently moving a feeding part to a plurality of definitive portions defined on a structural object to definitively feed a flowable agent with a predetermined amount to each one of the definitive portions. The structural object includes a semi-finished product part with the definitive portions and a frame to be separated from the semi-finished product part. The frame includes a waste portion for the flowable agent. The waste portion has a same form as the definitive portions. The feeding part wastefully feeds the flowable agent to the waste portion with a same amount as the predetermined amount and thereafter starts the intermittently moving for the definitively feeding of the flowable agent.Type: GrantFiled: January 31, 2018Date of Patent: September 15, 2020Assignee: NHK SPRING CO., LTD.Inventors: Yoshihiro Teramoto, Masaru Inoue, Takeshi Shimoda
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Patent number: 10773613Abstract: 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.Type: GrantFiled: April 3, 2019Date of Patent: September 15, 2020Assignee: NHK SPRING Co., Ltd.Inventors: Takeshi Nakamura, Kenichi Katsube, Shu Kondou, Daisuke Tanaka
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Patent number: 10767678Abstract: A fastening member includes: a first alloy section made of aluminum alloy containing zinc in an amount of 0.005 wt % or more and 6.5 wt % or less and containing magnesium in an amount of 0.6 wt % or more and 2.0 wt % or less, and provided at a portion being in contact with at least one of the plurality of members; and a second alloy section made of an aluminum alloy containing magnesium in an amount of greater than 0.2 wt % and 2.3 wt % or less and containing copper in an amount of greater than 1.0 wt % and 8.0 wt % or less, and bonded to the first alloy section.Type: GrantFiled: August 26, 2016Date of Patent: September 8, 2020Assignee: NHK Spring Co., Ltd.Inventors: Toshio Kazama, Noriyoshi Kaneda, Shun Hirai
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Publication number: 20200279579Abstract: A flexure is provided along a first surface of a load beam. The flexure includes a tongue on which a slider is mounted, a first outrigger arm, and a second outrigger arm. A first damping member is provided in a first outrigger root portion. The first damping member adheres to both the load beam and the first outrigger root portion in a first aperture portion including a first aperture formed in the load beam. A second damping member is provided in a second outrigger root portion. The second damping member adheres to both the load beam and the second outrigger root portion in a second aperture portion including a second aperture.Type: ApplicationFiled: January 31, 2020Publication date: September 3, 2020Applicant: NHK SPRING CO., LTD.Inventors: Hiroshi NAKAYAMA, Masao HANYA, Tatsuhiko NISHIDA
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Patent number: 10759250Abstract: A stabilizer device includes a stabilizer extending in a width direction of a vehicle, and a bush unit. The bush unit includes a bracket formed of metal, and a rubber bush. The rubber bush is formed of a plurality of bush pieces, and is fixed to the stabilizer by an adhesion layer. The adhesion layer is constituted of an adhesion member including an adhesive applied to inner surfaces of the bush pieces. A bonding display portion formed of a part of the adhesion member is provided at a corner on an end face of the bush piece.Type: GrantFiled: May 31, 2018Date of Patent: September 1, 2020Assignee: NHK SPRING CO., LTD.Inventors: Jun Umeno, Yukihiro Seki, Toru Itihara, Hiroshi Mizukami
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Patent number: 10748565Abstract: A flexure is provided along a first surface of a load beam. The flexure includes a tongue on which a slider is mounted, a first outrigger arm, and a second outrigger arm. A first damping member is provided in a first outrigger root portion. The first damping member adheres to both the load beam and the first outrigger root portion in a first aperture portion including a first aperture formed in the load beam. A second damping member is provided in a second outrigger root portion. The second damping member adheres to both the load beam and the second outrigger root portion in a second aperture portion including a second aperture.Type: GrantFiled: January 31, 2020Date of Patent: August 18, 2020Assignee: NHK SPRING CO., LTD.Inventors: Hiroshi Nakayama, Masao Hanya, Tatsuhiko Nishida
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Publication number: 20200240487Abstract: A compression coil spring includes a steel wire material containing, hereinafter in weight %, 0.5 to 0.7% of C, 1.2 to 3.0% of Si, 0.3 to 1.2% of Mn, 0.5 to 1.9% of Cr and 0.05 to 0.5% of V as necessary components, one or more kinds selected from not more than 1.5% of Ni, not more than 1.5% of Mo and not more than 0.5% of W as freely selected components, and iron and inevitable impurities as the remainder; the C-condensed layer which exceeds the average concentration of C contained in the steel wire material exists at a surface layer part, and the thickness of the C-condensed layer is within 0.01 to 0.05 mm along the entire circumference of the steel wire material.Type: ApplicationFiled: April 10, 2018Publication date: July 30, 2020Applicant: NHK SPRING CO., LTD.Inventors: Toshiyuki AKANUMA, Tohru SHIRAISHI, Yohei IWAGAKI, Keita TAKAHASHI, Shun HIRAI
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Patent number: 10704634Abstract: A lower-side spring receiving member is adapted to receive a compression spring provided with an effective part, end turn parts which do not elastically deform, and rising parts located between the effective part and the end turn parts, at a lower side of the compression spring. The lower-side spring receiving member is provided with a contact part which is formed to protrude outward from an end at one side in the extending direction thereof, and which is in contact with the rising part so as not to form a gap between the contact part and the rising part. The contact part is in contact with the rising part of the compression spring by an elastic force caused by elastic deformation, regardless of a load on the compression spring.Type: GrantFiled: February 4, 2016Date of Patent: July 7, 2020Assignee: NHK Spring Co., Ltd.Inventors: Shuji Ohmura, Shohei Hosomi, Jun Umeno
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Patent number: 10696122Abstract: An annular reference surface is formed around a through-hole of an eye portion. A distal-end-side curved portion is formed at a first corner portion, on an outer side of the annular reference surface. The thickness of the distal-end-side curved portion is reduced in a range of a length from the first flat surface toward the distal end surface. A hole-side curved portion whose thickness is reduced toward an inner surface of the through-hole is formed at a second corner portion, on an inner side of the annular reference surface. The length of the hole-side curved portion is less than the length of the distal-end-side curved portion. The hole-side curved portion is curved with a greater curvature than that of the distal-end-side curved portion.Type: GrantFiled: April 17, 2018Date of Patent: June 30, 2020Assignee: NHK SPRING CO., LTD.Inventors: Yasuharu Sakurai, Yoshihiro Koshita, Akihiko Nishikawa, Akifumi Otani
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Publication number: 20200189343Abstract: A coil spring includes a wire shaped to be helical, and is compressed between an upper spring seat and a lower spring seat. The coil spring includes an upper portion and a lower portion. A positive pitch winding end portion is formed on the upper portion of the coil spring. A terminal-point-strong-abutting-portion is formed at a distal end of the winding end portion. The terminal-point-strong-abutting-portion is in contact with the upper spring seat at one point at a position deviated to an inner side of a vehicle with respect to a coil central axis. On the lower portion of the coil spring, an end turn portion which contacts the lower spring seat is formed.Type: ApplicationFiled: February 25, 2020Publication date: June 18, 2020Applicant: NHK SPRING CO., LTD.Inventors: Ken OKURA, Shuji OHMURA, Shusaku HAYASHI
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Publication number: 20200171910Abstract: A stabilizer link includes a support bar and a ball joint. The ball joint includes a ball stud having a ball portion and a stud portion. The stabilizer has two end portions, each of which includes an attachment portion for joining the stabilizer link. The attachment portion has a through hole, through which an elastic member provided at the stud portion is attached to the attachment portion. The elastic member includes a body portion and tab portions. The stud portion is joined to the attachment portion through the elastic member in such a manner that while the elastic member is attached to the through hole, the body portion abuts on an inner circumferential wall portion of the through hole and the tab portions are located to cover circumferential edge portions of the through hole.Type: ApplicationFiled: May 9, 2018Publication date: June 4, 2020Applicant: NHK SPRING CO., LTD.Inventors: Shigeru KURODA, Shuji OHMURA
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Patent number: 10654437Abstract: In the state in which the first reinforcing cloth and the second reinforcing cloth are in loops, two end portions of the first reinforcing cloth are sewn to the first skin, and two end portions of the second reinforcing cloth are sewn to the second skin. Thus, the first reinforcing cloth and the second reinforcing cloth are sewn to the first skin and the second skin, respectively, in two-layer states.Type: GrantFiled: June 25, 2018Date of Patent: May 19, 2020Assignee: NHK SPRING Co., Ltd.Inventors: Satoshi Yaegashi, Tomoyuki Iyama, Akihiko Hoshino
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Publication number: 20200139783Abstract: A stabilizer includes bend sections. With respect to positions in a circumferential direction of a radial cross section of each of the bend sections, a center of an inside of a bend is defined as 0°, and a center of an outside of the bend is defined as 180°. The bend sections each include a bend interior section located at 0°, a bend exterior section located at 180°, a first side section located at 90°, and a second side section located at 270°. The bend interior section has compressive residual stress from a surface to a first depth. The bend exterior section has compressive residual stress to a second depth. The first side section has compressive residual stress to a third depth. The second side section has compressive residual stress to a fourth depth.Type: ApplicationFiled: January 8, 2020Publication date: May 7, 2020Applicant: NHK SPRING CO., LTD.Inventors: Yasuharu SAKURAI, Yoshihiro KOSHITA, Akihiko NISHIKAWA, Akifumi OTANI
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Patent number: 10644329Abstract: A fuel cell stack has a stacked plurality of single cells. Each of the single cells has a membrane electrode assembly, and a pair of separators sandwiching the membrane electrode assembly therebetween. A cooling fluid channel where a cooling fluid flows is formed between adjacent single cells. The fuel cell stack further comprises a displacement absorbing member disposed in the cooling fluid channel to absorb a displacement between the single cells. The displacement absorbing member comprises a channel flow resistance reduction structure that reduces a channel flow resistance of the cooling fluid channel against the cooling fluid.Type: GrantFiled: November 8, 2013Date of Patent: May 5, 2020Assignees: Nissan Motor Co., Ltd., NHK Spring Co., Ltd.Inventors: Yosuke Fukuyama, Keita Iritsuki, Yusuke Terada, Norihiro Tajima