Retractable steering wheel

Patent metadata

Field	Value
Publication number	US-11214294-B2
Application number	US-202016796254-A
Country	US
Kind code	B2
Filing date	Feb 20, 2020
Priority date	Feb 22, 2019
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A steering wheel assembly has a central hub configured to connect to a steering column, at least one retractable hand grip attached to the central hub, one or more control cables disposed internal of each retractable hand grip, and a drive mechanism connected to the control cables. The drive mechanism is located either at or in the central hub or remotely relative to the steering wheel assembly. The drive mechanism when activated can selectively move one or more of the control cables to move the retractable grips to a retracted position or a non-retracted position. Optionally, the hand grips can be connected directly to the central hub and/or to one or more spokes extending form the central hub. Each of the retractable hand grips has at least one and up to four control cables.

First claim

What is claimed is:

1. A steering wheel assembly comprises: a central hub;
at least one retractable hand grip coupled to the central hub;
one or more control cables disposed internal of the at least one retractable hand grip; a drive mechanism connected to the one or more control cables; and
wherein the drive mechanism when activated can selectively move the one or more control cables to move the at least one retractable grip from a retracted position to a non-retracted position and from the non-retracted position to the retracted position.

2. The steering wheel assembly of claim 1 wherein the one or more control cables comprises up to four control cables.

3. The steering wheel assembly of claim 2 wherein the control cables are configured as push/pull cables connected to the drive mechanism.

4. The steering wheel assembly of claim 3 wherein the push/pull cables are flexible geared cables.

5. The steering wheel assembly of claim 1 wherein the drive mechanism is positioned remotely relative to the steering wheel.

6. The steering wheel assembly of claim 1 wherein the drive mechanism includes a geared linear drive mechanism having a rack gear and pinion gear connected to a drive motor.

7. The steering wheel assembly of claim 6 wherein the linear drive mechanism includes an axle holding one or more of the pinion gears.

8. The steering wheel assembly of claim 7 wherein when the drive motor is activated the axle rotates the pinion gear moving the rack gear and the control cable connected to the rack gear to move the at least one retractable hand grip into a non-retracted or a retracted position.

9. The steering wheel assembly of claim 7 wherein the drive mechanism has three control cables attached and when the drive motor rotates clockwise, the three cables stroke and pull three retractable hand grips to a retracted position.

10. The steering wheel assembly of claim 7 wherein the drive mechanism has three control cables attached and when the motor rotates counter clockwise, the cables stroke and push the three retractable hand grips to a non-retracted position.

11. The steering wheel assembly of claim 7 wherein the drive mechanism drive motor has two pinion gears stacked onto the axle.

12. The steering wheel assembly of claim 7 wherein the size of the pinion gear determines the speed of the cable stroke with a larger diameter stroking faster.

13. The steering wheel assembly of claim 1 wherein the one or more control cables are each looped onto a rotatable grooved drum coupled to a motor and friction clutch, wherein rotation of the drum in one direction pulls the control cable to retract the at least one retractable hand grip and rotation in an opposite direction pulls the cable to move the at least one retractable hand grip to a non-retracted position.

14. The steering wheel assembly of claim 13 wherein the drive mechanism employs a pair of motors and drums and pair of retractable hand grips, each drum connected to a single control cable wherein rotation of the drums moves the retractable hand grips horizontally apart and an opposing rotation of the drums causing the retractable hand grips to move horizontally together.

15. The steering wheel assembly of claim 13 wherein a control cable is connected to a motor and grooved drum and rotation of the grooved drum pulls to cable to move the at least one retractable hand grip about a pivot toward an upright or vertical manual driving position and an oppositely directed rotation of the grooved drum pulls the cable to move the at least one retractable hand grips toward a horizontal or autonomous driving stowed position.

16. The steering wheel assembly of claim 13 wherein the drive mechanism employs a pair of motors and drums, each drum control to a single control cable and wherein the steering wheel has a pair of retractable hand grips pivotally connected at opposite ends of the central hub wherein rotation of the pair of drums in opposite directions causes the cables to pull the hand grips about the pivot to a non-retracted manual driving position and a reversal of the motors causes the cables to pull the hand grips about the pivot to a stowed autonomous driving position.

17. The steering wheel assembly of claim 1 wherein the one or more control cables are one or more torsion cable actuators and rotation of the torsion cable actuation by the drive mechanism moves the at least one retractable grip.

18. The steering wheel assembly of claim 17 wherein the at least one retractable hand grip is pivotally connected to opposed ends of the central hub and rotation of the torsion cable actuator pivots the at least one retractable hand grip to a horizontal, manual driving position and an opposite rotation of the torsion cable moves the hand grips to a horizontal folded stowed autonomous driving position.

19. The steering wheel assembly of claim 17 wherein the at least one retractable hand grip is pivotally connected at opposite ends of the central hub and actuation in one direction of the torsion cable actuator rotates the cable causing the at least one retractable hand grip to move vertically upright about the pivot to a manual driving position and an opposite rotation downwards pivots the at least one retractable hand grip to a lowered stowed autonomous driving position.

20. The steering wheel assembly of claim 1 wherein the hub is connected to a steering column, wherein the steering column is movable inwardly to retract the steering wheel when in the autonomous driving position into or adjacent a dash or instrument panel for autonomous vehicles and movable outwardly to position the steering wheel for a manual driving position.

Assignees

• Joyson Safety Systems Acquisition Llc

Inventors

• Kawaguchi Makoto

Classifications

• F16C1/12

  Arrangements for transmitting movement to or from the flexible member · CPC title

• F16H19/04

  comprising a rack · CPC title

• B62D1/08

  Spokes, e.g. resilient (B62D1/11 takes precedence) · CPC title

• F16C2326/24

  Steering systems, e.g. steering rods or columns · CPC title

• B62D1/183 Primary

  adjustable between in-use and out-of-use positions, e.g. to improve access · CPC title