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公开(公告)号：US20170227111A1
公开(公告)日：2017-08-10
申请号：US15436996
申请日：2017-02-20
Applicant: NSK LTD.
Inventor： Yasuyuki MATSUDA , Daisuke Gunji , Masafumi Hikida , Kazutaka Tanaka , Tooru Ueda , Tetsu Takehara , Tomoharu Saito , Hiroyasu Yoshioka , Yuka Kaneko
CPC classification number: F16H57/0037 , F16C19/364 , F16C19/463 , F16C33/581 , F16C33/6677 , F16C2361/65 , F16F15/1216 , F16H2059/147 , G01L3/101 , G01L3/104 , G01L3/105 , G01L3/109
Abstract: A rotation transmission device having a high torque measurement resolution is provided. The rotation transmission device is provided with: a rotary-shaft unit (6) having a first and second rotary shaft (13, 14) combined so as to be coaxial and such that the end sections thereof can rotate relative to each other and a torsion bar (15) that is provided on the inner-diameter side of the first and second rotary shafts so as to be coaxial therewith, has one end section connected to the first rotary shaft (13), and has the other end section connected to the second rotary shaft (14); a first gear (7) fastened to the outer peripheral surface of the first rotary shaft (13); a second gear (8) fastened to the outer peripheral surface of the second rotary shaft (14); a coupling shaft (9) provided on the inner-diameter side of the torsion bar (15) so as to be coaxial therewith, having one end section connected to one rotary shaft (13), and having the other end section protruding from an end of the torsion bar (15) in the axial direction; a first encoder disposed and fixed on the other end of the coupling shaft (9) so as to be coaxial with the first rotary shaft (13) and having a first detected section (39); a second encoder fastened on the other end of the second rotary shaft (14) so as to be close to the first encoder and having a second detected section (40); and a sensor unit having at least one sensor (42a, 42b) that faces the first and second detected sections (39, 40).
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公开(公告)号：US10309501B2
公开(公告)日：2019-06-04
申请号：US15313167
申请日：2015-03-25
Applicant: NSK LTD.
Inventor： Hiroyasu Yoshioka , Yasuyuki Matsuda , Kazutaka Tanaka , Takashi Imanishi
Abstract: A sun roller of a friction roller-type transmission includes a movable sun roller element (23) capable of moving in an axial direction. Furthermore, the sun roller is provided with a loading cam mechanism which is formed along the circumferential direction of an input shaft (12), the loading cam mechanism having a first cam surface (75), a second cam surface (77) arranged facing the first cam surface (75) and secured to the input shaft (12), rolling elements (63) held between the first and second cam surfaces (75, 77), and an annular holding device (51), and the loading cam mechanism axially displacing the movable sun roller element (23). The holding device (51) has an inside-diameter-surface guiding part (81) for positioning the holding device relative to the input shaft by being fitted over the input shaft, the guiding part being provided to the inside diameter surface.
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公开(公告)号：US09625332B2
公开(公告)日：2017-04-18
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
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.
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公开(公告)号：US09845848B2
公开(公告)日：2017-12-19
申请号：US15032493
申请日：2014-09-26
Applicant: NSK LTD.
Inventor： Kazutaka Tanaka , Yasuyuki Matsuda
CPC classification number: F16H13/08 , F16H13/14 , F16H25/186
Abstract: A friction roller type reduction gear includes a first sun roller so mounted on an input shaft movably in the axial direction of the input shaft, a plurality of first cam grooves formed in the end face of the first sun roller, a cam plate so mounted on the input shaft as is opposed to the first cam groove side of the first sun roller, a plurality of second cam grooves so formed in the cam plate as are opposed to the first cam grooves, rolling elements interposed between the first and second cam grooves, and a cage for holding the rolling elements rollably, while a pitch circle diameter of the position for holding the rolling elements is different from pitch circle diameter of the first and second cam grooves.
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Patent Agency Ranking
公开(公告)号：US09067491B2
公开(公告)日：2015-06-30
申请号：US14354765
申请日：2012-10-24
Applicant: NSK Ltd.
Inventor： Kazutaka Tanaka , Eiji Inoue , Takashi Imanishi , Yasuyuki Matsuda , Daisuke Gunji
CPC classification number: B60K17/12 , B60K1/00 , B60K2001/001 , B60L15/2054 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/486 , F16H3/46 , F16H3/663 , F16H2003/442 , F16H2061/2884 , F16H2061/2892 , F16H2200/0021 , F16H2200/0034 , F16H2200/2005 , F16H2200/2023 , F16H2200/2035 , H02K7/116 , Y02T10/641 , Y02T10/645 , Y02T10/72 , Y02T10/7275
Abstract: Construction capable of improving the convenience of an electric automobile is achieved by making the drive apparatus for an electric automobile in which a planetary-gear transmission 11 is assembled more compact and simple, and increasing the distance traveled per charge. The planetary-gear transmission 11 comprises a single-pinion first planetary-gear mechanism 12 and a double-pinion second planetary-gear mechanism 13, and reduces power from an electric motor 1a by a desired reduction ratio before transmitting that power to a driven-side rotating shaft 5a. A first braking device 14 switches a ring gear 22 and a second braking device 15 switches a second sun gear 19 between a state of being allowed to rotate and a state of being prevented from rotating with respect to a fixed portion.
Abstract translation: 通过使行星齿轮传动装置11组装的电动汽车的驱动装置更紧凑，简单，并且增加每次充电的行驶距离，可以实现提高电动汽车便利性的结构。 行星齿轮传动装置11包括单小齿轮第一行星齿轮机构12和双小齿轮第二行星齿轮机构13，并且在将动力传递到被驱动机构13之前，将来自电动机1a的功率降低期望的减速比。 侧旋转轴5a。 第一制动装置14切换环形齿轮22，并且第二制动装置15在允许转动的状态和防止相对于固定部旋转的状态之间切换第二太阳齿轮19。
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公开(公告)号：US12085154B2
公开(公告)日：2024-09-10
申请号：US18265810
申请日：2022-06-22
Applicant: NSK LTD.
Inventor： Ryo Segawa , Kazutaka Tanaka
CPC classification number: F16H25/2214 , F16H25/24 , F16H2025/2075
Abstract: A ball screw device has: a screw shaft rotationally moving during use, a nut having a protruding non-rotating side engaging portion at an end portion on one side in an axial direction, the nut linearly moving during use, balls arranged between a shaft-side and nut-side grooves, and a driving member fixed to the screw shaft having an arc-shaped rotating-side engaging groove portion into which the non-rotating side engaging portion can be inserted in the axial direction, and which can be engaged with the non-rotating side engaging portion in a circumferential direction.
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公开(公告)号：US10480635B2
公开(公告)日：2019-11-19
申请号：US15436996
申请日：2017-02-20
Applicant: NSK LTD.
Inventor： Yasuyuki Matsuda , Daisuke Gunji , Masafumi Hikida , Kazutaka Tanaka , Tooru Ueda , Tetsu Takehara , Tomoharu Saito , Hiroyasu Yoshioka , Yuka Kaneko
IPC: G01L3/00 , F16H57/00 , G01L3/10 , F16C33/66 , F16C19/36 , F16C19/46 , F16C33/58 , F16F15/121 , F16H59/14
Abstract: A rotation transmission device having a high torque measurement resolution is provided. The rotation transmission device is provided with: a rotary-shaft unit (6) having a first and second rotary shaft (13, 14) combined so as to be coaxial and such that the end sections thereof can rotate relative to each other and a torsion bar (15) that is provided on the inner-diameter side of the first and second rotary shafts so as to be coaxial therewith, has one end section connected to the first rotary shaft (13), and has the other end section connected to the second rotary shaft (14); a first gear (7) fastened to the outer peripheral surface of the first rotary shaft (13); a second gear (8) fastened to the outer peripheral surface of the second rotary shaft (14); a coupling shaft (9) provided on the inner-diameter side of the torsion bar (15) so as to be coaxial therewith, having one end section connected to one rotary shaft (13), and having the other end section protruding from an end of the torsion bar (15) in the axial direction; a first encoder disposed and fixed on the other end of the coupling shaft (9) so as to be coaxial with the first rotary shaft (13) and having a first detected section (39); a second encoder fastened on the other end of the second rotary shaft (14) so as to be close to the first encoder and having a second detected section (40); and a sensor unit having at least one sensor (42a, 42b) that faces the first and second detected sections (39, 40).
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公开(公告)号：US20160195183A1
公开(公告)日：2016-07-07
申请号：US14901063
申请日：2013-11-08
Applicant: NSK LTD.
Inventor： Yasuyuki MATSUDA , Daisuke Gunji , Masafumi Hikida , Kazutaka Tanaka , Tooru Ueda , Tetsu Takehara , Tomoharu Saito , Hiroyasu Yoshioka , Yuka Kaneko
CPC classification number: F16H57/0037 , F16C19/364 , F16C19/463 , F16C33/581 , F16C33/6677 , F16C2361/65 , F16F15/1216 , F16H2059/147 , G01L3/101 , G01L3/104 , G01L3/105 , G01L3/109
Abstract: A rotation transmission device having a high torque measurement resolution is provided. The rotation transmission device is provided with: a rotary-shaft unit (6) having a first and second rotary shaft (13, 14) combined so as to be coaxial and such that the end sections thereof can rotate relative to each other and a torsion bar (15) that is provided on the inner-diameter side of the first and second rotary shafts so as to be coaxial therewith, has one end section connected to the first rotary shaft (13), and has the other end section connected to the second rotary shaft (14); a first gear (7) fastened to the outer peripheral surface of the first rotary shaft (13); a second gear (8) fastened to the outer peripheral surface of the second rotary shaft (14); a coupling shaft (9) provided on the inner-diameter side of the torsion bar (15) so as to be coaxial therewith, having one end section connected to one rotary shaft (13), and having the other end section protruding from an end of the torsion bar (15) in the axial direction; a first encoder disposed and fixed on the other end of the coupling shaft (9) so as to be coaxial with the first rotary shaft (13) and having a first detected section (39); a second encoder fastened on the other end of the second rotary shaft (14) so as to be close to the first encoder and having a second detected section (40); and a sensor unit having at least one sensor (42a, 42b) that faces the first and second detected sections (39, 40).
Abstract translation: 提供具有高扭矩测量分辨率的旋转传递装置。 旋转传递装置设置有：具有第一和第二旋转轴（13,14）的旋转轴单元（6），该第一和第二旋转轴（13,14）组合成同轴的，并且使得其端部部分能够相对于彼此旋转， 设置在第一和第二旋转轴的内径侧以与其同轴的杆（15）具有连接到第一旋转轴（13）的一个端部，并且另一个端部连接到 第二旋转轴（14）; 固定到第一旋转轴（13）的外周面的第一齿轮（7）; 固定到第二旋转轴（14）的外周表面的第二齿轮（8）; 设置在扭杆（15）的内径侧以与其同轴的联接轴（9），其一端部连接到一个旋转轴（13），并且另一端部从端部 的扭杆（15）在轴向上; 第一编码器，设置并固定在所述联结轴（9）的另一端，以与所述第一旋转轴（13）同轴并具有第一检测部分（39）; 固定在所述第二旋转轴（14）的另一端以便靠近所述第一编码器并具有第二检测部分（40）的第二编码器; 以及传感器单元，其具有面向所述第一和第二检测部分（39,40）的至少一个传感器（42a，42b）。
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公开(公告)号：US20140287863A1
公开(公告)日：2014-09-25
申请号：US14354765
申请日：2012-10-24
Applicant: NSK Ltd.
Inventor： Kazutaka Tanaka , Eiji Inoue , Takashi Imanishi , Yasuyuki Matsuda , Daisuke Gunji
CPC classification number: B60K17/12 , B60K1/00 , B60K2001/001 , B60L15/2054 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/486 , F16H3/46 , F16H3/663 , F16H2003/442 , F16H2061/2884 , F16H2061/2892 , F16H2200/0021 , F16H2200/0034 , F16H2200/2005 , F16H2200/2023 , F16H2200/2035 , H02K7/116 , Y02T10/641 , Y02T10/645 , Y02T10/72 , Y02T10/7275
Abstract: Construction capable of improving the convenience of an electric automobile is achieved by making the drive apparatus for an electric automobile in which a planetary-gear transmission 11 is assembled more compact and simple, and increasing the distance traveled per charge. The planetary-gear transmission 11 comprises a single-pinion first planetary-gear mechanism 12 and a double-pinion second planetary-gear mechanism 13, and reduces power from an electric motor 1a by a desired reduction ratio before transmitting that power to a driven-side rotating shaft 5a. A first braking device 14 switches a ring gear 22 and a second braking device 15 switches a second sun gear 19 between a state of being allowed to rotate and a state of being prevented from rotating with respect to a fixed portion.
Abstract translation: 通过使行星齿轮传动装置11组装的电动汽车的驱动装置更紧凑，简单，并且增加每次充电的行驶距离，可以实现提高电动汽车便利性的结构。 行星齿轮传动装置11包括单小齿轮第一行星齿轮机构12和双小齿轮第二行星齿轮机构13，并且在将动力传递到被驱动机构13之前，将来自电动机1a的功率降低期望的减速比。 侧旋转轴5a。 第一制动装置14切换环形齿轮22，并且第二制动装置15在允许转动的状态和防止相对于固定部旋转的状态之间切换第二太阳齿轮19。
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