Vehicles and vehicle systems for restricting rotation of a vehicle steering system

Patent metadata

Field	Value
Publication number	US-9937952-B2
Application number	US-201514721265-A
Country	US
Kind code	B2
Filing date	May 26, 2015
Priority date	May 26, 2015
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

Vehicles and vehicle systems for restricting rotation of vehicle steering systems are disclosed herein. In one embodiment, a vehicle including a front wheel, a steering column assembly coupled to the front wheel, a steering wheel coupled to the steering column assembly, a steering rack assembly that includes a rack coupled to the front wheel, where the rack extends in a vehicle lateral direction and is translatable with respect to a body of the vehicle in the vehicle lateral direction, and a resistance device including a damper coupled to at least one of the steering rack assembly and the steering column assembly that limits a rotation of the steering column assembly.

First claim

What is claimed is:

1. A vehicle comprising:
a front wheel;
a steering column assembly coupled to the front wheel, the steering column assembly comprising a steering wheel, a steering column coupled to the steering wheel and a pinion coupled to the steering column;
a steering rack assembly that comprises a rack coupled to the front wheel, wherein the rack extends in a vehicle lateral direction and is translatable with respect to a body of the vehicle in the vehicle lateral direction, the pinion coupled to the rack at a first location; and
a resistance device comprising a rotary damper coupled to the steering rack assembly that limits a rotation of the steering column assembly based on a translation speed of the steering rack assembly by resisting translation of the steering rack assembly in the vehicle lateral direction, the rotary damper directly engaged with the rack at a second location that is offset from the first location to resist translation of the steering rack assembly independently of the pinion.

2. The vehicle of claim 1 , wherein the resistance device comprises a passive damper that is coupled to the steering rack assembly.

3. The vehicle of claim 2 , wherein the resistance device is coupled to the steering rack assembly and the passive damper provides a first resistance to a translation of the rack when the rack translates at a first translation speed, and the passive damper provides second resistance to the translation of the rack when the rack translates at a second translation speed, wherein the first resistance is greater than the second resistance and the first translation speed is greater than the second translation speed.

4. The vehicle of claim 1 , wherein the resistance device comprises an active damper that is coupled to the steering rack assembly.

5. The vehicle of claim 4 , wherein the resistance device is coupled to the steering rack assembly and the active damper comprises an activated configuration that provides a first resistance a translation of the rack and a deactivated configuration that provides a second resistance to the translation of the steering rack assembly, wherein the first resistance is greater than the second resistance.

6. A vehicle system comprising:
a front wheel;
a steering column assembly coupled to the front wheel, the steering column assembly comprising a steering wheel and a pinion coupled to a steering column;
a steering rack assembly that comprises a rack coupled to the front wheel, wherein the rack extends in a vehicle lateral direction and is translatable with respect to a body of the vehicle in the vehicle lateral direction, the pinion coupled to the rack at a first location;
a sensor configured to provide an output based on a vehicle condition;
a resistance device comprising a rotary damper coupled to the steering rack assembly, the rotary damper directly engaged with the rack at a second location that is offset from the first location to resist translation of the steering rack assembly independently of the pinion, wherein the resistance device comprises a deactivated configuration and an activated configuration; and
an electronic controller that is communicatively coupled to the resistance device and the sensor, the electronic controller comprising a processor and a memory storing a computer readable and executable instruction set, wherein, when the computer readable and executable instruction set is executed by the processor, the electronic controller:
detects the vehicle condition with the sensor; and
commands the resistance device to change from the deactivated configuration into the activated configuration based on the detected vehicle condition, wherein the rotary damper applies a force to resist translation of the rack of the steering rack assembly in the activated configuration.

7. The vehicle system of claim 6 , wherein the sensor comprises an inertial sensor coupled to the body of the vehicle, wherein the inertial sensor is configured to provide the output that is indicative of a deceleration of the body, and wherein when the computer readable and executable instruction set is executed by the processor, the electronic controller detects the deceleration of the body with the inertial sensor and commands the resistance device to change from the deactivated configuration into the activated configuration based on the detected deceleration.

8. The vehicle system of claim 7 , further comprising a supplemental restraint system that is communicatively coupled to the electronic controller, the supplemental restraint system comprising a deactivated configuration and an activated configuration, wherein when the computer readable and executable instruction set is executed by the processor, the electronic controller further commands the supplemental restraint system to reposition from the deactivated configuration into the activated configuration based on the detected deceleration of the body.

9. The vehicle system of claim 6 , wherein the sensor comprises a rotational sensor coupled to at least one of the steering column assembly and the steering wheel, wherein the rotational sensor is configured to provide the output that is indicative of a rotational speed of at least one of the steering column assembly and the steering wheel, and wherein when the computer readable and executable instruction set is executed by the processor, the electronic controller detects the rotational speed of at least one of the steering column assembly and the steering wheel with the rotational sensor and commands the resistance device to change from the deactivated configuration into the activated configuration based on the detected rotational speed.

10. The vehicle system of claim 9 , wherein the rotational sensor is coupled to the steering column assembly.

11. The vehicle system of claim 9 , wherein the rotational sensor is coupled to the steering wheel.

Assignees

• Toyota Eng & Mfg North America

Inventors

• Schnug Tyler E
• Clauser Mark D
• Meyers Gerritt B

Classifications

• B62D5/0472

  for damping vibrations · CPC title

• B62D1/16 Primary

  Steering columns · CPC title

• B62D7/226 Primary

  acting on the steering gear · CPC title

• B62D7/22

  Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system · CPC title