Rear wheel steering apparatus

Patent metadata

Field	Value
Publication number	US-10220877-B2
Application number	US-201715628918-A
Country	US
Kind code	B2
Filing date	Jun 21, 2017
Priority date	Jun 22, 2016
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A rear wheel steering apparatus may include: a driving part housed in a housing part; a rotating part rotated by the driving part; a moving shaft part connected to tie rods, and screwed to the rotating part; a spline plate spline-coupled to the moving shaft part so as to restrict rotation of the moving shaft part; and a space maintaining part protruding from the moving shaft part or the spline plate, and maintaining a space between the moving shaft part and the spline plate.

First claim

What is claimed is:

1. A rear wheel steering apparatus comprising:
a driving part housed in a housing part;
a rotating part rotated by the driving part;
a moving shaft part connected to tie rods, and screwed to the rotating part;
a spline plate spline-coupled to the moving shaft part so as to restrict rotation of the moving shaft part; and
a space maintaining part protruding from the moving shaft part or the spline plate, and maintaining a space between the moving shaft part and the spline plate.

2. The rear wheel steering apparatus of claim 1 , wherein the moving shaft part comprises:
a moving shaft screwed to the rotating part, and having both ends connected to the respective tie rods; and
a serrated shaft part formed on the outer circumferential surface of the moving shaft, spline-coupled to the spline plate, and having the space maintaining part coupled thereto.

3. The rear wheel steering apparatus of claim 2 , wherein the space maintaining part has such a shape that the width thereof decreases away from the rotation center of the moving shaft.

4. The rear wheel steering apparatus of claim 3 , wherein the space maintaining part has a curved surface facing the spline plate.

5. The rear wheel steering apparatus of claim 2 , wherein the plurality of space maintaining parts are arranged on the outer circumferential surface of the serrated shaft part.

6. The rear wheel steering apparatus of claim 5 , wherein the space maintaining part is integrated with the serrated shaft part.

7. The rear wheel steering apparatus of claim 1 , wherein the spline plate comprises:
a plate part coupled to the housing part, and restricted from rotating; and
a serrated plate part formed on the inner circumferential surface of the plate part, spline-coupled to the moving shaft part, and having the space maintaining part coupled thereto.

8. The rear wheel steering apparatus of claim 7 , wherein the space maintaining part has such a shape that the width thereof decreases toward the rotation center of the moving shaft part.

9. The rear wheel steering apparatus of claim 8 , wherein the space maintaining part has a curved surface facing the moving shaft part.

10. The rear wheel steering apparatus of claim 7 , wherein the plurality of space maintaining parts are arranged on the inner circumferential surface of the serrated plate part.

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Woo Myeong Nam

Classifications

• B62D7/224 Primary

  acting between the steering wheel and the steering gear, e.g. on the steering column · CPC title

• B62D5/0445

  Screw drives · CPC title

• B62D7/228

  acting between the steering gear and the road wheels, e.g. on tie-rod · CPC title

• B62D7/1581

  characterised by comprising an electrical interconnecting system between the steering control means of the different axles · CPC title

• B62D5/0403

  characterised by constructional features, e.g. common housing for motor and gear box · CPC title