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公开(公告)号：US20220203800A1
公开(公告)日：2022-06-30
申请号：US17696971
申请日：2022-03-17
申请人： NHK SPRING CO., LTD.
发明人： Masahiro UMEZAWA , Daisuke TAKEDA
IPC分类号： B60G21/055 , B60G11/14 , F16F1/06 , F16F1/14 , F16F1/02 , B60G21/045
摘要： A method for manufacturing a hollow spring member having a hollow steel spring rod having terminal sealed portions at both ends thereof. Each terminal sealed portion has a rotationally symmetric shape in which an axis passing through a center of the spring rod is an axis of symmetry. Each terminal sealed portion has an end wall portion including an end face; an arc-shaped smoothly curved surface between an outer peripheral surface of the spring rod and the end face, and a hermetically closed distal-end-center closure portion on the axis passing through the center of the spring rod. The method includes forming each of the end portions of the spring rod by forming a chamfered portion on an inner or outer peripheral side of the end portion of a hollow wire, the end portion having an opening portion at a distal end, heating the end portion of the hollow wire having the chamfered portion, and spinning the heated end portion to be gathered toward the axis from the outer peripheral side by a jig. The end wall portion, which includes the distal-end-center closure portion, is formed by the distal end of the end portion being joined together on the axis.
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公开(公告)号：US11351895B2
公开(公告)日：2022-06-07
申请号：US17090227
申请日：2020-11-05
申请人： NHK SPRING CO., LTD.
发明人： Donghyoun Kim , Katsutoshi Imanari
摘要： A vehicle seat including: a seat cushion configured to support buttocks and thighs of a seated occupant; a temperature changing section that is provided at the seat cushion and is switchable between a first state in which the temperature changing section operates so as to warm the seated occupant from a front end portion of the seat cushion, and a second state in which the temperature changing section does not operate so as to warm the seated occupant from the front end portion of the seat cushion and a control section configured to control the temperature changing section so as to alternate repeatedly between the first state and the second state in a state in which an occupant is sitting on the seat cushion.
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公开(公告)号：US20220161698A1
公开(公告)日：2022-05-26
申请号：US17454597
申请日：2021-11-11
申请人： NHK SPRING CO., LTD.
发明人： Hisashi MURAFUJI , Yuji NOTO , Ryota MATSUI , Kosuke TAYAMA
摘要： A vehicle seat includes a back frame connected to a base member so as to be able to rotate around a first rotation shaft; a rotation locking mechanism; a cushion frame connected to the back frame so as to be able to rotate around a second rotation shaft, and in which a long hole is formed; a link member connected to the base member so as to be able to rotate around a third rotation shaft; a fourth rotation shaft fixed to the link member and inserted in the long hole so as to be able to move relatively and so as to be able to rotate; and movement restricting portion provided between the fourth rotation shaft and an inner surface of the long hole, and that restricts movement of the fourth rotation shaft from one end portion of the long hole toward another end portion side.
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公开(公告)号：US20220152689A1
公开(公告)日：2022-05-19
申请号：US17439583
申请日：2020-03-12
申请人： NHK SPRING Co., Ltd.
摘要： A method for manufacturing a stabilizer, the stabilizer including a main body bar that is elastically deformable, and a pair of connecting plates that are separately connected to a pair of left and right suspension devices, the method including a forging step of forming the connecting pate by forging both end portions of a material tube, in which in the forging step, both end portions of the material tube are crushed in a radial direction to be formed into the connecting plate in a state where a sealing metal plate heated to a temperature equal to or higher than a melting point is disposed inside both end portions of the material tube heated to a temperature lower than the melting point.
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公开(公告)号：US11308983B2
公开(公告)日：2022-04-19
申请号：US17101004
申请日：2020-11-23
申请人： NHK SPRING CO., LTD.
发明人： Masaru Inoue
IPC分类号： G11B5/48
摘要： A plate material has a first portion, a second portion, and a fracture portion connecting the first portion and the second portion, and is separated into the first portion and the second portion by tearing the fracture portion. The first portion and the second portion are arranged in a first direction. The fracture portion has thin portions arranged in a second direction crossing the first direction. Widths in the second direction of the thin portions are different from each other.
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公开(公告)号：US20220111271A1
公开(公告)日：2022-04-14
申请号：US17298179
申请日：2019-10-18
申请人： NHK SPRING CO., LTD.
发明人： Kosuke FUJIWARA , Akihisa INOUE
IPC分类号： A63B53/10
摘要： Provided is a golf shaft, capable of ensuring bending rigidity required for a golf club and providing good hit feeling in a composite shaft with 50 g-130 g. The golf shaft comprises an element tube made of metal, an outer layer made of a fiber reinforced plastic and covering an outer periphery of the element tube over an entire length of the element tube in an axial direction, an adhesive layer interposed between the element tube and the outer layer to bond between the element tube and the outer layer, wherein weight of a whole including the element tube, the outer layer, and the adhesive layer is 50 g-130 g, and weight of the element tube is 50%-90% of the weight of the whole.
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公开(公告)号：US20220097357A1
公开(公告)日：2022-03-31
申请号：US17486824
申请日：2021-09-27
申请人： NHK SPRING CO., LTD.
发明人： Kenichiro NAKANO
IPC分类号： B32B41/00 , H01L41/313 , B32B37/12 , G11B5/48
摘要： A method of manufacturing a disk drive suspension includes applying an adhesive to an actuator mounting portion, increasing viscosity of the adhesive by emitting light to the adhesive applied to the actuator mounting portion, arranging the piezoelectric element on the adhesive having the increased viscosity, detecting a height of the piezoelectric element arranged on the actuator mounting portion, and correcting an irradiation condition of the light in accordance with the detected height of the piezoelectric element.
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公开(公告)号：US11285776B2
公开(公告)日：2022-03-29
申请号：US16146269
申请日：2018-09-28
申请人： NHK SPRING CO., LTD.
发明人： Akira Tange , Masato Sugawara , Yutaka Wakabayashi
IPC分类号： B60G21/055 , F16F1/02 , F16F1/14 , B23P23/04
摘要： A terminal sealed portion is formed on an end portion of a hollow rod made of steel. An enclosed space is formed on an inner side of the hollow rod. At an end of the enclosed space, a terminal gap is formed. A volatile powdered rust inhibitor is supplied in the enclosed space. As the volatile powdered rust inhibitor is vaporized, the enclosed space is turned into a rust-inhibiting atmosphere. As the vaporized component of the volatile powdered rust inhibitor is adsorbed to an inner surface of the enclosed space, an inner surface rust-inhibiting film is formed. The vaporized component also enters inside the terminal gap, and forms a terminal rust-inhibiting film.
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公开(公告)号：US20220063785A1
公开(公告)日：2022-03-03
申请号：US17422881
申请日：2020-02-14
申请人： NHK SPRING Co., Ltd.
发明人： Masato SHIRAO , Marino AKITA , Takafumi OSHIMA
摘要： This outboard motor control device controls a plurality of outboard motors disposed on a rear portion of a hull of a boat. Each of the outboard motors includes a propulsion unit and a steering actuator. A boat includes an operation unit configured to operate the steering actuator and the propulsion unit. The operation unit is able to be positioned at a first position where the outboard motors do not generate a propulsion force of the boat and a second position where the outboard motors generate a propulsion force for moving the boat in a left-right direction. When the operation unit is moved from the first position to the second position and maintained at the second position, the outboard motors generate a first propulsion force during a first period from a first timing when the operation unit is moved to the second position to a second timing and subsequently generate a second propulsion force greater than the first propulsion force during a second period after the second timing.
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公开(公告)号：US11219970B2
公开(公告)日：2022-01-11
申请号：US16043070
申请日：2018-07-23
申请人： NHK SPRING CO., LTD.
发明人： Naoki Tanaka
IPC分类号： B23K37/04 , B23K26/244 , B23K101/36 , B23K26/22 , B23K26/06 , B23K26/08
摘要： As first-time laser irradiation is performed on a workpiece, an initial nugget is formed. By emitting a laser beam for the second time at the initial nugget, a diameter of a back-side nugget portion is increased. A nugget includes a front-side nugget portion formed in a first plate, the back-side nugget portion formed in a second plate, and an annular flat surface portion. The flat surface portion is along a boundary portion between the first plate and the second plate. In a thicknesswise cross section of the second plate, a tilt angle of a peripheral surface of the back-side nugget portion is increased as a thicknesswise position of the peripheral surface approximates to a rear face of the second plate.
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