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公开(公告)号：US11345387B2
公开(公告)日：2022-05-31
申请号：US16952837
申请日：2020-11-19
Applicant: NSK LTD.
Inventor： Yoshifumi Kurokawa , Jessica Elaine Lipa , Victor Corona Martinez , Juan Antonio Hernandez Otero
IPC: B62D1/18 , B62D1/181 , B62D1/183 , B62D1/184 , B62D1/185 , B62D1/187 , B62D6/00 , F16B7/14 , F16B7/18 , F16B7/20
Abstract: In an electrically adjustable steering of the present embodiment, a first telescopic actuator is disposed between a top bracket or a mount bracket on a vehicle body side and a steering jacket. The steering jacket includes a plurality of jacket members that overlap each other so as to be able to expand and contract in an axial direction. A motor of the first telescopic actuator is fixed to the top bracket or the mount bracket on the vehicle body side.
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公开(公告)号：US20210171086A1
公开(公告)日：2021-06-10
申请号：US17082501
申请日：2020-10-28
Applicant: NSK LTD.
Inventor： Yoshifumi Kurokawa , Simon Read , Steven Marmillo
Abstract: The position adjustment mechanism is configured to perform a storage operation of storing the steering wheel in a storage position to secure a space in a driver seat for a driver and an adjustment operation of adjusting the steering wheel to a position suitable for driving within an adjustment operation range. The motor control unit is configured to drive the electric motor such that a speed of the steering wheel during the storage operation is higher than a speed of the steering wheel during the adjustment operation.
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公开(公告)号：US10940881B2
公开(公告)日：2021-03-09
申请号：US16318574
申请日：2017-07-18
Applicant: NSK LTD.
Inventor： Yoshifumi Kurokawa , Nobuyuki Nishimura
Abstract: Reinforcing ribs (33a and 33b) are provided between mounting plate parts (30a and 30b) and support plate parts (31a and 31b) forming a support bracket (18a). Side plate parts (40a and 40b) forming a distance bracket (17a) are disposed between the support plate parts (31a and 31b), and an outer column (13a). When an adjustment lever (26a) is operated to hold a steering wheel at a position after adjustment, a steering column (6a) is pushed toward an upper side by column pressing parts (42a and 42b) provided at the side plate parts (40a and 40b), and, therefore, a pair of widened parts (43a and 43b) provided at upper parts of the side plate parts (40a and 40b) are pushed and expanded to the outside in a width direction. The widened parts (43a and 43b) are sandwiched between the support plate parts (31a and 31b) and the outer column (13a).
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公开(公告)号：US10597065B2
公开(公告)日：2020-03-24
申请号：US15774910
申请日：2016-12-02
Applicant: NSK LTD.
Inventor： Yoshifumi Kurokawa
Abstract: In a clamped state where the interval between both the pressing parts is reduced and both the clamped plate parts are clamped by both the support plate parts, vertical distances from an outer peripheral surface of the adjustment rod to an upper surface and a lower surface of an inner surface of one through-hole of both the through-holes are different, vertical distances from the outer peripheral surface of the adjustment rod to an upper surface and a lower surface of an inner surface of the other through-hole of both the through-holes are different, and sides, where the vertical distance from the outer peripheral surface of the adjustment rod to the inner surface is smaller, are on opposite sides with respect to the vertical direction in one through-hole and the other through-hole.
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公开(公告)号：US10597064B2
公开(公告)日：2020-03-24
申请号：US15749570
申请日：2016-10-26
Applicant: NSK LTD.
Inventor： Yoshifumi Kurokawa
Abstract: Non-circular portions (41) are provided in two positions of an adjusting rod (17a) in an axial direction, and the non-circular portions (41) are disposed inside of telescopic-adjusting long holes (16a) of a displacement bracket (13a). Up-down-direction clearances (44a and 44b) which are present between opposite edges of each of the non-circular portions (41) in an up-down direction and inner surfaces of each of the telescopic-adjusting long holes (16a) in the up-down direction in a state where a position of a steering wheel can be maintained are less than up-down-direction clearances (43a and 43b) which are present between the opposite edges of each of the non-circular portions (41) in the up-down direction and the inner surfaces of each of the telescopic-adjusting long holes (16a) in the up-down direction in a state where the position of the steering wheel can be adjusted.
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Patent Agency Ranking
公开(公告)号：US10156267B2
公开(公告)日：2018-12-18
申请号：US15307579
申请日：2015-05-12
Applicant: NSK LTD.
Inventor： Takuma Nakamura , Yoshifumi Kurokawa
Abstract: In a yoke for a cross shaft universal joint, the circumferential phases of the arrangement direction X of a pair of connecting arm parts and the arrangement direction Y of first and second flange parts are shifted from each other. A bolt is tightened to put the first and second flange parts nearer to each other, thereby applying mutually approaching forces to the connecting arm parts in directions inclined relative to the axes of circular holes. Thus, cup bearings incorporated in the circular holes are pressed against the end of a shaft part constituting a cross shaft, thereby enabling suppression of occurrence of shaking motion between the bearings incorporated in the circular holes and the end of the shaft part of the cross shaft rotatably supported by the bearings.
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公开(公告)号：US20240157996A1
公开(公告)日：2024-05-16
申请号：US18515596
申请日：2023-11-21
Applicant: NSK LTD.
Inventor： Yoshifumi Kurokawa
CPC classification number: B62D1/187 , B62D5/006 , B62D5/0481
Abstract: A steering column has a cylindrical front-side column and a cylindrical rear-side column having a front-end portion that is connected to a rear-end portion of the front-side column. The steering shaft has a front-side shaft rotatably supported inside the front-side column, a rear-side shaft rotatably supported inside the rear-side column and has a rear-end portion to which the steering wheel is attached, and a universal joint connecting the rear-end portion of the front-side shaft and the front-end portion of the rear-side shaft. The front-end portion of the front-side column is always arranged above a portion of the extension line of the center axis of the rear-side column which exists at the same location in the front-rear direction as the front-end portion.
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公开(公告)号：US20210339788A1
公开(公告)日：2021-11-04
申请号：US17286225
申请日：2019-10-16
Applicant: NSK LTD.
Inventor： Yoshifumi Kurokawa , Yuichiro Taguchi
Abstract: Provided is a structure of a steering section of a steer-by-wire system capable of maintaining large leg space in the driver's seat in the vertical direction.
The steering section of a steer-by-wire system includes a handle 1a having a center axis of rotation α arranged in the front-rear direction, and a handle-support shaft 2a having a center axis β arranged in the front-rear direction and that is supported so as not to be able to rotate about the center axis β with respect to the vehicle. The handle 1a is rotatably supported so as to be able to rotate about the center axis of rotation α with respect to the rear-end portion of the handle-support shaft 2a. The center axis β of the handle-support shaft 2a is arranged so as to be offset upward with respect to the center axis of rotation α of the handle 1 a.-
公开(公告)号：US10119575B2
公开(公告)日：2018-11-06
申请号：US15307524
申请日：2015-05-12
Applicant: NSK LTD.
Inventor： Takuma Nakamura , Yoshifumi Kurokawa
Abstract: In a yoke for a cross shaft universal joint, the forming direction of a through hole (17a) and a screw hole (18a) is inclined relative to the axes of circular holes (19a, 19a) formed in a pair of engaging arm parts (12, 12). And, by fastening a bolt (32) to thereby put first and second flange parts (14a, 15a) nearer to each other, mutually approaching forces are applied to the connecting arm parts (12, 12) in a direction inclined relative the axes of the circular holes (19a, 19a). Thus, cup bearings (29) incorporated in the circular holes (19a, 19a) are pressed against the end of a shaft part (28a) constituting a cross shaft (27), thereby enabling suppression of occurrence of shaking motion between the bearings incorporated in the circular holes and the end of the shaft part of the cross shaft supported rotatably by the bearings.
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公开(公告)号：US09422986B2
公开(公告)日：2016-08-23
申请号：US14239627
申请日：2012-10-24
Applicant: NSK LTD.
Inventor： Yoshifumi Kurokawa
CPC classification number: F16D3/06 , B62D1/16 , B62D1/20 , F16C3/035 , F16C2326/24 , F16D2001/103
Abstract: A telescopic shaft includes a male shaft having an outer circumference on which a plurality of protruding teeth are formed, and a female shaft having an inner circumference on which a plurality of tooth grooves are formed. The tooth grooves of the female shaft are fitted onto the protruding teeth of the male shaft such that the male shaft and the female shaft are relatively slidable in an axial direction and such that a rotational torque is transmittable between the male shaft and the female shaft. One of a curvature radius of a tooth surface of the protruding teeth and a curvature radius of a tooth surface of the tooth grooves is smaller than the other of the curvature radius of the tooth surface of the protruding teeth and the curvature radius of the tooth surface of the tooth grooves.
Abstract translation: 伸缩轴包括具有形成有多个突出齿的外周的阳轴和具有形成有多个齿槽的内周的阴轴。 阴轴的齿槽装配在阳轴的突出齿上，使得阳轴和阴轴能够在轴向方向上相对滑动，并且可以在阳轴和阴轴之间传递旋转扭矩。 突出齿的齿面的曲率半径和齿槽的齿面的曲率半径之一小于突出齿的齿面的曲率半径和齿面的曲率半径的另一个 的齿槽。
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