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

IPC: G01G19/10 ,  B60G15/06

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.

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.

公开(公告)号：US20190285461A1

公开(公告)日：2019-09-19

申请号：US16318797

申请日：2017-07-18

Applicant: NSK LTD.

Inventor： Masafumi HIKIDA ,  Eisaku SUZUKI ,  Shunsuke SUZUKI ,  Yasuyuki MATSUDA

IPC: G01G19/10 ,  G01L1/02 ,  G01G19/52 ,  G01G5/04

Abstract: A weight measuring device includes: a bottom plate (200) in contact with an arm of a suspension; a piston (300) capable of pressing a diaphragm (230) forming an oil chamber (201) on an upper surface side of the bottom plate; a pressure sensor (400) for detecting a pressure of measurement fluid (R) in the oil chamber on a lower surface side of the bottom plate; an oil discharge hole portion (240) which communicates an inner side of the oil chamber with the atmosphere side and is capable of discharging excess hydraulic oil in the oil chamber; and a sealing portion (242) which is provided in the oil discharge hole portion and seals the oil discharge hole portion after discharging the excess measurement fluid (R) and equilibrating an internal pressure to the atmospheric pressure in a state of no load.

公开(公告)号：US20170335891A1

公开(公告)日：2017-11-23

申请号：US15534604

申请日：2015-12-11

Applicant: NSK LTD.

Inventor： Masafumi HIKIDA ,  Yasuyuki MATSUDA ,  Ryuho MORITA ,  Hiroki MAEJIMA

IPC: F16C35/077 ,  F16C19/28 ,  F02B33/40 ,  F02B39/04

CPC classification number: F16C35/077 ,  F02B33/40 ,  F02B39/04 ,  F16C19/183 ,  F16C19/28 ,  F16C19/547 ,  F16C25/083 ,  F16C27/066 ,  F16C33/6666 ,  F16C35/063 ,  F16C35/067 ,  F16C2360/22 ,  F16C2360/43 ,  F16C2360/44 ,  F16C2361/61 ,  F16H13/06 ,  F16H57/043 ,  F16H57/0479 ,  F16H57/0487

Abstract: A friction roller type speed increaser (100) includes a high speed side shaft (11), a ring roller (21), a low speed side shaft (13), at least one fixed roller (15), at least one movable roller, and a housing (23) that surrounds the rollers. A bearing unit (45) that includes a cylindrical bearing housing (51) into which the high speed side shaft (11) is inserted, bearings (53 and 55) on an inner circumferential portion of the bearing housing (51) which rotatably support the high speed side shaft (11), an oil seal (59) which is provided at one end portion of the bearing housing (51) and closes an inner space including the bearings is floating-supported such that the bearing unit can move in a radial direction of the high speed side shaft (11) in a unit accommodating section (47) formed in the housing (23).

公开(公告)号：US20200378438A1

公开(公告)日：2020-12-03

申请号：US16623193

申请日：2017-12-15

Applicant: NSK LTD.

Inventor： Ryuho MORITA ,  Yasuyuki MATSUDA ,  Masafumi HIKIDA ,  Eisaku SUZUKI ,  Shunsuke SUZUKI ,  Yoshiya MUKAI

IPC: F16C19/46 ,  F16C33/80

Abstract: A vehicle weight measurement device includes a diaphragm which covers an opening area of a groove portion of a mounting part to form an oil chamber of a predetermined space together with the groove portion; a pressure sensor which detects a change in pressure of measurement fluid in the oil chamber; a first piston which presses the diaphragm; a second piston which presses the first piston; and a bearing unit interposed between the second piston and a spring bush which receives one end of a spring of a suspension device and is relatively rotatable. The bearing unit includes a thrust needle bearing which swingably supports a load in a longitudinal direction of the suspension device, and a slide bush which does not receive a load in the longitudinal direction and receives a load in a radial direction while causing constant damping to swinging.

公开(公告)号：US20170130768A1

公开(公告)日：2017-05-11

申请号：US15127945

申请日：2015-04-14

Applicant: NSK LTD.

Inventor： Yasuyuki MATSUDA ,  Tohru UEDA ,  Masafumi HIKIDA

IPC: F16C19/52 ,  G01L5/00 ,  G01L1/02 ,  F16C19/12

CPC classification number: F16C19/522 ,  B60G15/068 ,  B60G17/019 ,  B60G2204/11 ,  B60G2204/418 ,  B60G2400/51 ,  B60G2400/60 ,  B60T7/042 ,  B60T7/12 ,  B60T7/18 ,  B60T8/18 ,  B60T8/1875 ,  B60T10/02 ,  F16C19/10 ,  F16C19/12 ,  F16C41/00 ,  F16C2233/00 ,  F16C2326/05 ,  F16D57/04 ,  G01G19/10 ,  G01L1/02 ,  G01L5/0009

Abstract: A bearing raceway ring (25) disposed near a mounting section (9) is disposed on the outer periphery of a circular cylinder section (19). A fluid-sealed chamber (40) in which a measurement liquid is hermetically enclosed is provided between a first member (8) and the bearing raceway ring (25) which is disposed near the mounting section (9). Pressure acting on the fluid to be measured changes as the bearing raceway ring (25) moves in the cylinder-axis direction, the bearing raceway ring (25) being disposed near the mounting section (9). The fluid-sealed chamber (40) is provided with a pressure sensor (44) capable of detecting a change in the pressure of the fluid to be measured.

公开(公告)号：US20200182324A1

公开(公告)日：2020-06-11

申请号：US16617683

申请日：2018-10-30

Applicant: NSK LTD.

Inventor： Eisaku SUZUKI ,  Masafumi HIKIDA ,  Yasuyuki MATSUDA ,  Yosuke SHIMOMURA

IPC: F16F9/54 ,  B60G17/019 ,  G01G19/10 ,  B60G15/07

Abstract: A vehicle weight measurement device includes a moving body, an attachment body, a stopper ring provided between the moving body and the attachment body, and a rotation prevention part configured to prevent the moving body and the attachment body from rotating relative to each other. The stopper ring includes a fixing part fixed to one of the moving body and the attachment body and a separation and detachment prevention part provided at the other of the moving body and the attachment body and configured to prevent the moving body and the attachment body from separating and detaching, without inhibiting movement of the moving body. The rotation prevention part includes a pin fitted from the moving body to the attachment body.

公开(公告)号：US20200173837A1

公开(公告)日：2020-06-04

申请号：US16626158

申请日：2017-12-20

Applicant: NSK LTD.

Inventor： Masafumi HIKIDA ,  Yasuyuki MATSUDA ,  Eisaku SUZUKI

IPC: G01G19/02 ,  G01G5/06 ,  G01G19/10

Abstract: The vehicle weight measurement device includes a bottom plate in contact with an arm of a suspension device, a piston which presses a diaphragm configuring an oil chamber on an upper surface side of the bottom plate, and a pressure sensor which detects pressure of a measurement fluid in the oil chamber on an lower surface side of the bottom plate. The bottom plate includes a rotation-preventing mechanism with respect to the arm of the suspension device around the pressure sensor. A hanging circumferential edge portion is formed in a flange portion of the piston. A gap is interposed between the flange portion and the bottom plate. A protruding portion of the piston engaged in a cutout of a stopper ring and a protruding portion protruding to an upper surface side and engaged to the cutout so as to be movable in a longitudinal direction are provided.

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

IPC: G01L5/00 ,  B60B27/00

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.

公开(公告)号：US20160195442A1

公开(公告)日：2016-07-07

申请号：US14916668

申请日：2014-09-03

Applicant: NSK Ltd.

Inventor： Tomoharu SAITO ,  Yasuyuki MATSUDA ,  Daisuke GUNJI ,  Masafumi HIKIDA ,  Kazutaka TANAKA ,  Tohru UEDA ,  Yuka KANEKO ,  Tetsu TAKEHARA ,  Hiroyasu YOSHIOKA

IPC: G01L3/10

CPC classification number: G01L3/104 ,  G01L3/101 ,  G01L3/109 ,  G01L25/003

Abstract: In order to implement a structure capable of improving the resolution of torque measurement while preventing the plastic deformation of a torsion bar (15), an input-side stopper (61) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an input-side rotating body (55) that includes an input shaft (13) and an input gear (7), and an output-side stopper (63) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an output-side rotating body (56) that includes an output shaft (14) and an output gear (8). The input-side stopper (61) and the output-side stopper (63) are combined so as to be engaged to be able to transmit torque only when the torsional angle within the elastic range of the torsion bar (15) reaches a predetermined amount.

Abstract translation: 为了实现能够在防止扭杆（15）的塑性变形的同时提高转矩测量的分辨率的结构，在周向上具有不均匀形状（齿轮形状）的输入侧止动器（61）设置在 包括输入轴（13）和输入齿轮（7）的输入侧旋转体（55）的一部分和沿圆周方向具有不平坦形状（齿轮形状）的输出侧止动件（63） 设置在包括输出轴（14）和输出齿轮（8）的输出侧旋转体（56）的一部分中。 输入侧止动器（61）和输出侧止动器（63）被组合以仅在扭杆（15）的弹性范围内的扭转角达到预定量时才能够传递扭矩 。