公开(公告)号：US20190031228A1

公开(公告)日：2019-01-31

申请号：US16086007

申请日：2017-02-16

Applicant: KYB Corporation

Inventor： Katsumi SHIMODA ,  Kazuyuki OKUMURA ,  Shinraku YOSHIKAWA

IPC: B62D5/04 ,  F16H55/24 ,  F16H1/16 ,  B62D3/04 ,  F16H57/021

Abstract: An electric power steering device includes a worm shaft; a bearing rotatably supporting the worm shaft; a coil spring configured to bias the worm shaft toward the worm wheel via the bearing; a gear case including an insertion hole, the coil spring being insertable into the insertion hole; and plug configured to close the insertion hole. The plug includes a body part and a supporting part configured to support the coil spring. An outer peripheral surface of the plug is formed into a curved surface from the body part to the supporting part.

公开(公告)号：US20160318545A1

公开(公告)日：2016-11-03

申请号：US15107923

申请日：2014-12-11

Applicant: KYB CORPORATION

Inventor： Masato UCHIHARA ,  Kazuyuki OKUMURA ,  Shinraku YOSHIKAWA ,  Katsumi SHIMODA

IPC: B62D5/04 ,  B62D3/04

CPC classification number: B62D5/0454 ,  B62D3/04 ,  B62D5/0403 ,  B62D5/0409 ,  F16H2057/0213 ,  F16H2057/0222

Abstract: A power steering device includes a worm shaft configured to rotate as an electric motor is driven; a worm wheel meshed with the worm shaft, the worm wheel being configured to transmit a rotational force of the electric motor to a rack shaft configured to turn wheels; a bearing that rotatably supports a tip side of the worm shaft; a gear case that houses the worm shaft; a biasing member configured to bias the worm shaft toward the worm wheel via the bearing; and a holder including a housing hole configured to house the bearing movably in a biasing direction of the biasing member. The holder includes a plurality of bulging parts formed to bulge radially outwardly, the bulging parts being configured to come into contact with an inner peripheral surface of the gear case.

Abstract translation: 一种动力转向装置，包括构造为在电动机被驱动时旋转的蜗杆轴; 与所述蜗杆轴啮合的蜗轮，所述蜗轮构造成将所述电动机的旋转力传递到构造成转动车轮的齿条轴; 可旋转地支撑蜗杆轴的前端的轴承; 容纳蜗杆轴的齿轮箱; 偏置构件，构造成经由所述轴承朝向所述蜗轮偏置所述蜗杆; 以及保持器，其包括：壳体孔，其构造成在所述偏置构件的偏压方向上可移动地容纳所述轴承。 保持器包括形成为径向向外凸出的多个凸起部，凸出部构造成与齿轮箱的内周面接触。