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公开(公告)号：US20180172118A1
公开(公告)日：2018-06-21
申请号：US15527894
申请日：2016-04-12
Applicant: NSK LTD.
Inventor： Ryosuke FUJITA , Hiroshi KAWAHARA , Hiroyasu YOSHIOKA
Abstract: A pivot holder of a friction-roller-type reduction gear has a pair of bearing parts configured to support a rotational shaft of an intermediate roller and having a pivot axis at an eccentric position from a center of the rotational shaft, and a bridging part configured to integrally couple the pair of bearing parts. A carrier has a holder support part configured to rotatably support the bearing parts. An interaxial distance between a center of the pivot axis and the center of the rotational shaft is equal to or smaller than a maximum radius of an outer diameter of the intermediate roller, and the center of the pivot axis is located on an applying line of a torque reaction force of transmission torque to be applied to the pivot holder.
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公开(公告)号：US20190226906A1
公开(公告)日：2019-07-25
申请号：US16060588
申请日：2016-10-20
Applicant: NSK LTD.
Inventor： Shin YAMAMOTO , Yasuyuki MATSUDA , Masafumi HIKIDA , Fumiaki SODA , Hiroshi KAWAHARA
Abstract: A vehicle weight measurement device includes an annular diaphragm (11) configured to cover an opening area (9d) of a groove portion (9c) of a mounting part (7) and to form a predetermined oil chamber (9) together with the groove portion. The diaphragm (11) is hermetically fixed by an inner collar (33) and an outer collar (35). The diaphragm (11) is pressed by a piston (43) configured to be moveable by a resilient force of a spring of a suspension device, and a pressure of a fluid to be measured R filled in the oil chamber, which is to be applied by the movement of the piston, can change. A pressure sensor (21) configured to communicate with the oil chamber and to detect a change in pressure of the fluid to be measured R filled in the oil chamber is provided.
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公开(公告)号：US20160047501A1
公开(公告)日：2016-02-18
申请号：US14782697
申请日：2013-12-19
Applicant: NSK LTD.
Inventor： Hiroshi KAWAHARA , Sumio SUGITA
IPC: F16L33/207 , F16L13/14
CPC classification number: F16L33/2076 , B21D39/04 , B23P11/005 , F16B17/004 , F16D1/072 , F16D1/0858 , F16D2300/18 , F16L13/141 , F16L13/146
Abstract: Provided are: a joining structure capable of suitably obtaining joining strength between components which compose the joining structure; and a joining method thereof. For this purpose, a joining structure (1) includes: a shaft member (10); and a thin-walled cylindrical member (20) that fits an inner circumferential surface thereof to an outer circumferential surface of the shaft member (10). The thin-walled cylindrical member (20) has: a first crimped portion (21), in which an axially intermediate portion is reduced in diameter in a radial direction, and is crimped to the shaft member (10); and a second crimped portion (22), in which an end surface (20a) is folded radially inward, and is crimped to the shaft member (10).
Abstract translation: 提供：能够适当地获得构成接合结构的部件之间的接合强度的接合结构体; 及其接合方法。 为此，接合结构（1）包括：轴构件（10）; 以及将其内周面配合到所述轴构件（10）的外周面的薄壁圆筒状构件（20）。 薄壁圆柱形构件（20）具有：第一卷曲部分（21），其中轴向中间部分在径向方向上的直径减小，并且被卷曲到轴构件（10）; 以及第二卷边部分（22），其中端面（20a）径向向内折叠并且被压接到所述轴构件（10）。
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公开(公告)号：US20180313708A1
公开(公告)日：2018-11-01
申请号：US15771313
申请日：2016-10-27
Applicant: NSK LTD.
Inventor： Hiroki HAMADA , Yasuyuki MATSUDA , Masafumi HIKIDA , Hiroshi KAWAHARA , Daisuke GUNJI
CPC classification number: G01L5/0023 , B60B27/0005 , B60B27/0026 , B60B27/0068 , B60B35/02 , F16C19/18 , F16C19/186 , F16C19/522 , F16C41/00 , F16C2326/02 , G01L5/00 , G01P15/18
Abstract: A vehicle wheel supporting rolling bearing unit includes a stationary side bearing ring member, a rotation side bearing ring member, and plural rolling elements. The rotation side bearing ring member is provided with a first acceleration sensor, a second acceleration sensor, and a third acceleration sensor which are fixed on a virtual plane orthogonal to a center axis of the rotation side bearing ring member. The first acceleration sensor and the second acceleration sensor are arranged on a virtual line passing through a rotation center of the rotation side bearing ring member with a same distance from the rotation center while detection directions thereof are directed in a radial direction and are opposite to each other in the radial direction. The third acceleration sensor is arranged such that a detection direction thereof is non-parallel to the detection directions of the first acceleration sensor and the second acceleration sensor.
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公开(公告)号：US20190316990A1
公开(公告)日：2019-10-17
申请号：US16317138
申请日：2017-06-13
Applicant: NSK LTD.
Inventor： Hiroshi KAWAHARA , Daisuke GUNJI , Fumiaki SODA , Koji HASHIMOTO
IPC: G01M17/013 , G01L5/16 , G01L5/13 , B60B1/14
Abstract: A wheel equipped with a sensing device includes a wheel and a sensing device. The sensing device includes a displacement extraction member, a to-be-detected part, and a detecting part. One radial end portion of the displacement extraction member is supported to one radial end-side portion of the wheel. The other radial end portion of the displacement extraction member is a free end. The to-be-detected part is provided to one of the other radial end-side portion of the wheel and the other radial end portion of the displacement extraction member. The detecting part is provided to the other of the other radial end-side portion of the wheel and the other radial end portion of the displacement extraction member, and is arranged in a vicinity of the to-be-detected part. An output of the detecting part changes in association with a change in positional relationship between the detecting part and the to-be-detected part.
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Patent Agency Ranking
公开(公告)号：US20180347675A1
公开(公告)日：2018-12-06
申请号：US15562315
申请日：2016-02-24
Applicant: NSK LTD.
Inventor： Hiroshi KAWAHARA , Hiroyasu YOSHIOKA , Tetsu TAKEHARA , Yuji SHIMOMURA
Abstract: A friction roller-type reduction gear includes a sun roller arranged concentrically with an input shaft, a ring roller having a stationary ring roller element and a moveable ring roller element, a plurality of intermediate rollers configured to be in rolling contact with an outer peripheral surface of the sun roller and an inner peripheral surface of the ring roller, a coupling part configured to couple the ring roller and the output shaft, and a loading cam mechanism having a cam ring and configured to change a contact surface pressure of each rolling contact surface. The outer peripheral surface of the sun roller is a concave curved surface of which a shape of an outer edge in an axial cross-section is a single circular arc-shaped concave curve, and an outer peripheral surface of the intermediate roller is a convex curved surface of which a shape of an outer edge in an axial cross-section is a single circular arc-shaped convex curve.
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公开(公告)号：US20180297399A1
公开(公告)日：2018-10-18
申请号：US15762801
申请日：2016-09-23
Applicant: NSK LTD.
Inventor： Yasuyuki MATSUDA , Masafumi HIKIDA , Tetsu TAKEHARA , Hiroshi KAWAHARA , Ryuho MORITA , Shin YAMAMOTO
IPC: B60B27/00 , B60B27/02 , B60R16/03 , B60R16/033 , F16C19/18 , H01Q1/32 , H02K11/00 , H02K7/18 , H02J7/14
Abstract: A vehicle wheel supporting rolling bearing unit includes a bearing part having a stationary side bearing ring member which is supported and fixed to a suspension device and non-rotatable in a use state and a rotation side bearing ring member which is coupled and fixed to a vehicle wheel and rotate together with the vehicle wheel, an electric generator which generates electric power to be supplied to a sensor provided on the vehicle wheel, a battery which stores the electric power generated by the electric generator, and a wireless communication device which wirelessly communicates an output signal of the sensor with an electronic equipment arranged on a vehicle body side. The stator is supported and fixed to the stationary side bearing ring member, and the rotor, the battery and the wireless communication device are supported and fixed to the rotation side bearing ring member.
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公开(公告)号：US20160089711A1
公开(公告)日：2016-03-31
申请号：US14891535
申请日：2013-12-19
Applicant: NSK LTD.
Inventor： Hiroshi KAWAHARA , Sumio SUGITA
CPC classification number: F16D1/072 , B21D39/048 , F16B7/0413 , F16B17/004 , F16D2300/18 , Y10T403/49 , Y10T403/7073
Abstract: To provide a joint structure capable of suitably joining members which compose the joint structure, and to provide a joining method thereof. The joint structure includes a shaft member, and a cylindrical member an inner surface of which is fitted to an outer surface of the shaft member. The cylindrical member includes first crimped portions which are crimped along axial grooves provided in an axial direction of the shaft member; and a second crimped portion which fits the axial grooves and is crimped along a circumferential groove, the circumferential groove being provided on a circumferential surface of the shaft member by reducing a diameter of an axially intermediate portion in a radial direction.
Abstract translation: 提供能够适当地接合构成接合结构的构件的接合结构，并提供其接合方法。 接头结构包括轴构件和圆筒构件，其内表面装配到轴构件的外表面。 所述圆柱形构件包括沿着轴构件的轴向设置的轴向槽压接的第一压接部; 以及第二卷曲部，其配合所述轴向槽并沿着周向槽卷曲，所述周向槽通过沿径向减小轴向中间部的直径而设置在所述轴构件的周向表面上。
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公开(公告)号：US20230193984A1
公开(公告)日：2023-06-22
申请号：US17926873
申请日：2021-12-03
Applicant: NSK LTD.
Inventor： Hiroshi KAWAHARA , Hiroki HASHIGUCHI , Hirofumi ITAGAKI , Azusa HIDAKA , Hiroki NISHIDA , Naofumi FUJITA , Hikari YOSHIMI , Naohiro HITOMI , Masahiro KITA
CPC classification number: F16H13/08 , F16H13/14 , F16H57/043 , F16H57/0486
Abstract: A frictional roller reducer having a sun roller; a ring roller; a plurality of intermediate rollers having rolling surfaces coming in rolling contact with the sun roller and the ring roller; the sun roller or the ring roller having a pair of roller elements including inclined surface portions on a circumferential surface coming in rolling with rolling surfaces, the inclined surface portions inclined in directions going toward the intermediate rollers in a radial direction as going away from each other in the axial direction; a pressing device pressing the pair of roller elements in directions going closer to each other, and an elastic member arranged between the pair of roller elements, the elastic member urging the pair of roller elements in directions going away from the rolling surface of the intermediate rollers.
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公开(公告)号：US20180372769A1
公开(公告)日：2018-12-27
申请号：US15780962
申请日：2016-10-31
Applicant: NSK LTD.
Inventor： Daisuke GUNJI , Hiroshi KAWAHARA , Fumiaki SODA
Abstract: A charger incorporated in a vehicle wheel supporting rolling bearing unit detects an output voltage of an electric generator and calculates a rotation speed of a hub. When a rotation speed of the hub is in a low speed state where a sensor and a wireless communication device are operated by electric power supplied by a battery, a frequency of wireless communication performed between the wireless communication device and a calculator disposed on a vehicle body side is changed according to the rotation speed of the hub or a traveling speed of a vehicle.
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