Pulley system for vehicle power steering system

Patent metadata

Field	Value
Publication number	US-11964708-B2
Application number	US-202017000859-A
Country	US
Kind code	B2
Filing date	Aug 24, 2020
Priority date	Aug 24, 2020
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

A pulley assembly for a steering assembly includes a motor disposed within a motor housing and having a motor shaft extending therefrom. The pulley assembly also includes a motor face plate having a motor pilot component extending therefrom in the same direction as the motor shaft extends away from the motor, the motor shaft extending through a hole in the motor face plate. The pulley assembly further includes an idler pulley post protruding from the motor housing and through the motor face plate in the substantially same axial direction of the motor shaft, the idler pulley post being radially offset from the motor shaft. The pulley assembly yet further includes a housing flange having a pilot bore to accommodate at least a portion of the motor pilot and the idler pulley post.

First claim

Having thus described the invention, it is claimed:

1. A pulley assembly for a steering assembly comprising:
a motor disposed within a motor housing and having a motor shaft extending therefrom;
a motor face plate having a motor pilot component extending therefrom in the same direction as the motor shaft extends away from the motor, the motor shaft extending through a hole in the motor face plate;
an idler pulley post protruding from the motor housing and through the motor face plate in the substantially same axial direction of the motor shaft, the idler pulley post being radially offset from the motor shaft, wherein the idler pulley post is integrally formed with the motor housing, wherein the idler pulley post has an idler pulley disposed on an end thereof, the idler pulley having a diameter larger than the idler pulley post; and
a housing flange having a pilot bore to accommodate at least a portion of the motor pilot and the idler pulley post.

2. The pulley assembly of claim 1 , wherein the motor shaft has a drive pulley disposed on an end thereof.

3. The pulley assembly of claim 2 , wherein rotation of the motor and the idler post tensions a pulley belt to a predetermined tension.

4. The pulley assembly of claim 2 , wherein the pulley assembly is disposed within a vehicle power steering assist system.

5. The pulley assembly of claim 4 , wherein the vehicle power steering assist system is part of an electric power steering system.

6. The pulley assembly of claim 4 , wherein the power assist system is part of a brake boost actuator.

Assignees

• Steering Solutions Ip Holding

Inventors

• Fall Christopher A

Classifications

• B62D5/0424 Primary

  the axes of motor and final driven element of steering gear, e.g. rack, being parallel · CPC title

• F16H7/02

  with belts; with V-belts · CPC title

• F16H7/08

  Means for varying tension of belts, ropes or chains  (pulleys of adjustable construction F16H55/52) · CPC title

• F16H7/18

  Means for guiding or supporting belts, ropes, or chains (construction of pulleys F16H55/36) · CPC title

• B62D5/0421 Primary

  Electric motor acting on or near steering gear · CPC title