Method of controlling a brake for service operation

Patent metadata

Field	Value
Publication number	US-11577711-B2
Application number	US-202117192206-A
Country	US
Kind code	B2
Filing date	Mar 4, 2021
Priority date	Mar 4, 2021
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

A method of servicing a brake system, comprising: (a) moving an actuator of the brake system from a first position to a second position; (b) conducting a manual operation on the brake system when or after the actuator reaches the second position; and (c) after completing the manual operation, moving the actuator to a third position.

First claim

What is claimed is:

1. A method of servicing a brake system, comprising:
(a) moving an actuator of the brake system from a first position to a second position;
(b) conducting a manual operation on the brake system when or after the actuator reaches the second position;
(c) after completing the manual operation, moving the actuator to a third position; and
wherein the second position is a position of the actuator located between the first position and the third position.

2. The method of claim 1 , wherein in the first position one or more brake pads of the brake system are free of contact with a rotor of a vehicle.

3. The method of claim 1 , wherein in the first position one or more brake pads of the brake system are in contact with a rotor of a vehicle.

4. The method of claim 1 , wherein the manual operation comprises manually retracting a brake piston into a caliper bore.

5. The method of claim 4 , wherein the actuator is stationary during the manual operation.

6. The method of claim 4 , wherein the brake piston remains stationary during step (c).

7. The method of claim 1 , wherein step (a) is manually initiated by a user.

8. The method of claim 1 , wherein the actuator is moved with an electric motor during steps (a) and/or (c).

9. The method of claim 1 , wherein the actuator comprises a spindle and a nut or a ball screw, and the third position is when the nut contacts a spindle stop of the spindle.

10. The method of claim 9 , wherein the nut is free of contact with the spindle stop in the second position.

11. The method of claim 9 , wherein the third position is when the nut is moved farther away from a brake piston than when the nut is in the second position.

12. The method of claim 1 , wherein during step (a), one or more components of the actuator are moved away from a brake piston of the brake system.

13. The method of claim 1 , wherein the third position is farther away from the first position than the second position.

14. The method of claim 1 , further comprising a step of inspecting, replacing, or both one or more brake pads of the brake system.

15. The method of claim 1 , wherein the method comprises a step of monitoring the brake system during the servicing for a fault.

16. The method of claim 1 , further comprising:
(d) after moving the actuator to the third position, moving the actuator back to the first position, a brake position where one or more brake pads of the brake system are in contact with a rotor of a vehicle, or both.

17. A method of servicing a brake system, comprising:
(a) moving an actuator of the brake system from a first position to a second position;
(b) upon indication of the actuator moving to the second position, manually retracting a piston of the brake system in a caliper bore;
(c) after the manually retracting step, moving the actuator to a third position farther away from the first position than the second position; and
(d) moving the actuator from the third position to a parked position, whereby one or more brake pads of the brake system are in contact with a rotor of a vehicle;
wherein fault detection is conducted during steps (a)-(d).

18. The method of claim 17 , wherein the first position is the parked position.

19. The method of claim 17 , wherein inspection or replacement of the one or more brake pads is completed after step (c), but before step (d).

Assignees

• Akebono Brake Ind

Inventors

• Ritter George Douglas
• Sun Xun

Classifications

• F16D2121/04

  acting on a piston-type actuator, e.g. for liquid pressure · CPC title

• F16D2127/04

  for manual operation · CPC title

• B60T17/221 Primary

  Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems (hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M) · CPC title

• F16D65/0043

  Brake maintenance and assembly, tools therefor · CPC title

• F16D2121/14

  Mechanical · CPC title