公开(公告)号：US20150354688A1

公开(公告)日：2015-12-10

申请号：US14387683

申请日：2014-02-24

Applicant: NSK LTD.

Inventor： Haruhiko KIYOTA ,  Takeshi YAMAMOTO ,  Fumiaki MITSUHASHI

IPC: F16H55/22 ,  F16H55/06 ,  B62D5/04 ,  F16H57/00

CPC classification number: B62D5/0409 ,  F16H55/06 ,  F16H55/22 ,  F16H57/0006 ,  F16H2055/065 ,  Y10T74/19907 ,  Y10T74/19921 ,  Y10T74/19953

Abstract: A core of a worm wheel has an axial end surface formed with a first annular recess, another axial end surface formed with a second annular recess, and a third annular recess formed in a radially outer region of the first annular recess. A rim portion has a first inner circumferential portion fixed to the first annular recess, a second inner circumferential portion fixed to the second annular recess, and a protrusion engaged with the third annular recess.

Abstract translation: 蜗轮的芯具有形成有第一环形凹部，形成有第二环形凹部的另一轴向端面和形成在第一环形凹部的径向外部区域中的第三环形凹部的轴向端面。 边缘部分具有固定到第一环形凹部的第一内周部分，固定到第二环形凹部的第二内圆周部分和与第三环形凹部接合的突出部。

公开(公告)号：US20150345609A1

公开(公告)日：2015-12-03

申请号：US14387615

申请日：2014-02-24

Applicant: NSK LTD.

Inventor： Haruhiko KIYOTA ,  Takeshi YAMAMOTO ,  Fumiaki MITSUHASHI

IPC: F16H55/22 ,  F16H55/06 ,  B62D5/04

CPC classification number: B62D5/0409 ,  F16H55/06 ,  F16H55/22 ,  F16H57/0006 ,  F16H2055/065 ,  Y10T74/19907 ,  Y10T74/19921 ,  Y10T74/19953

Abstract: A core of a worm wheel has an axial end surface formed with a first annular recess nad and another axial end surface formed with a second annular recess. An outer circumferential wall surface of a radially outer region of the second annular recess has a tapered surface extending from a bottom surface of the second annular recess to form an obtuse angle relative to the bottom surface, and a third annular recess formed radially outside the tapered surface. A cross-section of the third annular recess is a right-angled triangle having, as two sides, a surface parallel to the bottom surface of the second annular recess and a surface perpendicular to the bottom surface of the second annular recess. A rim portion has a first inner circumferential portion fixed to the first annular recess and a second inner circumferential portion fixed to the second annular recess.

Abstract translation: 蜗轮的芯部具有形成有第一环形凹部的轴向端面和形成有第二环形凹部的另一轴向端面。 第二环形凹部的径向外部区域的外周壁表面具有从第二环形凹部的底表面延伸的锥形表面，以相对于底表面形成钝角，以及形成在锥形部分的径向外侧的第三环形凹部 表面。 第三环形凹部的横截面是直角三角形，其具有平行于第二环形凹部的底表面的表面和垂直于第二环形凹部的底表面的表面的两侧。 边缘部分具有固定到第一环形凹部的第一内周部分和固定到第二环形凹部的第二内圆周部分。

公开(公告)号：US20150354687A1

公开(公告)日：2015-12-10

申请号：US14387678

申请日：2014-02-24

Applicant: NSK LTD.

Inventor： Haruhiko KIYOTA ,  Takeshi YAMAMOTO ,  Fumiaki MITSUHASHI

IPC: F16H55/22 ,  B62D5/04 ,  F16H55/06

CPC classification number: B62D5/0409 ,  F16H55/06 ,  F16H55/22 ,  F16H57/0006 ,  F16H2055/065 ,  Y10T74/19907 ,  Y10T74/19921 ,  Y10T74/19953

Abstract: A core of a worm wheel has an axial end surface formed with a first annular recess nad and another axial end surface formed with a second annular recess. A rim portion has a first inner circumferential portion fixed to the first annular recess and a second inner circumferential portion fixed to the second annular recess. An outer circumferential wall surface of the second annular recess extends from a bottom surface of the second annular recess so as to be perpendicular to the bottom surface. A depth of the second annular recess is at least 0.1 mm but not deeper than half of a gate thickness.

Abstract translation: 蜗轮的芯部具有形成有第一环形凹部的轴向端面和形成有第二环形凹部的另一轴向端面。 边缘部分具有固定到第一环形凹部的第一内周部分和固定到第二环形凹部的第二内圆周部分。 第二环形凹部的外周壁表面从第二环形凹部的底表面延伸以垂直于底表面。 第二环形凹部的深度至少为0.1mm但不深于栅极厚度的一半。