公开(公告)号：US20160194024A1

公开(公告)日：2016-07-07

申请号：US14975054

申请日：2015-12-18

Applicant: JTEKT CORPORATION

Inventor： Arata KIKUCHI ,  Wataru YAMADA

IPC: B62D5/00 ,  B62D7/16 ,  B62D6/00 ,  B62D3/12 ,  B62D3/04

CPC classification number: B62D5/0409 ,  F16H1/16 ,  F16H55/22 ,  F16H55/24

Abstract: A power transmission coupling that couples an output shaft of an electric motor and a worm shaft together includes a first rotation element coupled to the output shaft, a second rotation element coupled to the worm shaft, and an intermediate element formed of an elastic body and interposed between the first rotation element and the second rotation element. The intermediate element forms a unit integrally including an annular support portion, power transmission portions extending radially from the support portion and interposed between engaging protrusions of the first rotation element and the second rotation element, a spacer arranged inward of the support portion in a radial direction to apply a preload to the worm shaft in an axial direction, and a coupling portion that couples the support portion and the spacer together.

Abstract translation: 将电动机的输出轴和蜗杆轴联结在一起的动力传递联轴器包括联接到输出轴的第一旋转元件，联接到蜗杆轴的第二旋转元件和由弹性体形成的中间元件， 在第一旋转元件和第二旋转元件之间。 所述中间元件形成整体地包括环形支撑部的单元，从所述支撑部径向延伸并插入在所述第一旋转元件和所述第二旋转元件的接合突起之间的动力传递部，配置在所述支撑部的径向内侧的间隔件 以沿轴向将预载荷施加到所述蜗杆轴;以及联接部分，其将所述支撑部分和所述间隔件联接在一起。

公开(公告)号：US20140102235A1

公开(公告)日：2014-04-17

申请号：US14046014

申请日：2013-10-04

Applicant: JTEKT CORPORATION

Inventor： Yuji WAKUGAWA ,  Ryuji NAKATA ,  Atsuhiro YOSHIDA ,  Wataru YAMADA ,  Jun HAMAKITA ,  Hideyuki HONKADO

IPC: B62D3/04 ,  F16H1/16

CPC classification number: B62D3/04 ,  B62D5/0409 ,  F16H1/16 ,  F16H57/039 ,  F16H57/0464 ,  F16H57/0498 ,  Y10T74/19828

Abstract: A speed reducer for an electric power steering system includes a worm, a worm wheel, and a housing. Only a meshing section where the worm and the worm wheel mesh with each other and a space between the worm wheel and the housing are filled with grease. The grease in the space is in contact with both tooth surfaces of the worm wheel and an inner peripheral face of the housing, the inner peripheral face facing the worm wheel.

Abstract translation: 用于电动助力转向系统的减速器包括蜗杆，蜗轮和壳体。 只有蜗杆和蜗轮彼此啮合的啮合部分和蜗轮与壳体之间的空间被填满了油脂。 空间中的油脂与蜗轮的两个齿面和壳体的内周面接触，内周面与蜗轮相对。

公开(公告)号：US20150027248A1

公开(公告)日：2015-01-29

申请号：US14332999

申请日：2014-07-16

Applicant: JTEKT CORPORATION

Inventor： Wataru YAMADA ,  Hirotsugu KUSANO ,  Arata KIKUCHI ,  Yoshitomo NAGAI

IPC: B62D5/04

CPC classification number: B62D5/0409 ,  B62D5/04 ,  Y10T74/18792

Abstract: In a speed reducer of an electric power steering system, a first bearing supports a first end portion of a worm so that the first end portion is movable in an axial direction. Elastic members elastically support the worm in the axial direction. A second bearing supports a second end portion of the worm. An urging member oscillates and urges the worm. The sum of first frictional resistance in the axial direction between an inner ring of the first bearing and the worm and second frictional resistance in the axial direction between the urging member and an outer circumference of an outer ring of the second bearing is less than engagement frictional resistance in the axial direction of the worm.

Abstract translation: 在电动助力转向系统的减速器中，第一轴承支撑蜗杆的第一端部，使得第一端部能够沿轴向移动。 弹性构件沿轴向方向弹性地支撑蜗杆。 第二轴承支撑蜗杆的第二端部。 推动构件振动并促使蠕虫。 在第一轴承的内圈和蜗杆之间的轴向上的第一摩擦阻力的总和和第二轴承的外圈之间的推压部件和外周之间的轴向上的第二摩擦阻力的总和小于接合摩擦 蠕虫轴向阻力。