Steering column with selectively adjustable and preset preferred positions

• US 4,691,587 A
• Filed: 12/20/1985
• Issued: 09/08/1987
• Est. Priority Date: 12/20/1985
• Status: Expired due to Fees

• Current Assignee: General Motors Corporation (General Motors Company)
• Original Assignee: General Motors Corporation (General Motors Company)
• Inventors: Milton, Thomas J., McDow, William R., Farrand, Robert M.
• Primary Examiner(s): Husar, Cornelius J.
• Assistant Examiner(s): Cuomo, Peter M.
• Application Number:
  US06/811,733
• Time in Patent Office: 627 Days
• Field of Search: 74/493, 74/492, 74/510, 280/775, 280/779, 280/777
• US Class Current: 74/493
• CPC Class Codes: B62D 1/181 with power actuated adjustment, e.g. with position memory

Abstract

A steering column assembly for a vehicle which provides an infinite number of column positions within a field of motion and a larger field of motion than existing mechanism with memory set for all possible column positions with automatic return to retracted position.

Claims

1. An articulated tilt and telescoping steering column assembly for a vehicle comprising a steering shaft assembly having an elongated steering shaft extending within the vehicle and terminating in a pivot joint at the lower end thereof, hand wheel means affixed to the upper end of said steering shaft for turning the steering shaft for steering the steerable road wheels of the vehicle, said steering column assembly including a jacket mounting said steering shaft for rotation therein and for transmitting a linear telescoping force to said shaft, an intermediate shaft assembly having first and second shaft parts and having an upper end connected to said pivot joint and a lower end adapted to be operatively connected to the steerable road wheels of the vehicle, slip joint means operatively connecting said intermediate shaft parts and allowing said intermediate shaft parts to linearly slip relative to each other and to transmit torque therebetween, tilt bracket means for supporting said jacket and said steering shaft for axial sliding movement therein, a support, pivot means for mounting said tilt bracket means to said support for tilting movement of said bracket and steering column assembly, and first and second motorized actuator means operatively connected to said support and to said jacket for moving said steering shaft assembly to an infinite number of tilt and axially adjusted positions.

2. The steering column assembly defined in claim 1 wherein said first and second actuator means comprise first and second electric motor means respectively connected to said tilt bracket means and to said jacket, and control means for electrically energizing said electric motor means for moving said steering column assembly as a unit to predetermined first and second tilt and telescoped positions.

3. The steering column asembly defined in claim 2 and including additional control means for controlling said electric motor means for moving said column assembly as a unit to an infinite number of tilt and telescoped positions thereby moving the hand wheel to any of an infinite number of selected positions to facilitate vehicle steering operation.