Electric park brake with electromagnetic brake

Patent metadata

Field	Value
Publication number	US-11780419-B2
Application number	US-202117536714-A
Country	US
Kind code	B2
Filing date	Nov 29, 2021
Priority date	Jul 1, 2016
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

An electromagnetic brake to restrict or prevent movement of a motor in a vehicle brake system, the electromagnetic brake includes: a core; a static plate; a moving plate located between the core and the static plate; a rotor located between the core and the moving plate; one or more legs that extend from the core; and one or more fasteners that connect the one or more legs to the static plate, the core includes a cylindrical portion and a flange that extends around the cylindrical portion, the one or more legs extend from the flange radially around the cylindrical portion.

First claim

I claim:

1. An electromagnetic brake to restrict or prevent movement of a motor in a vehicle brake system, the electromagnetic brake comprising:
a core;
a static plate;
a moving plate located between the core and the static plate;
a rotor located between the static plate and the moving plate;
one or more legs that radially extend from the core, the one or more legs are configured to set a gap between the static plate and the rotor and/or between the moving plate and the rotor; and
one or more fasteners that connect the one or more legs to the static plate;
wherein the core comprises a cylindrical portion and a flange that extends around the cylindrical portion, the one or more legs extend from the flange radially around the cylindrical portion.

2. The electromagnetic brake according to claim 1 , wherein the static plate comprises one or more connecting apertures for the one or more fasteners to engage to connect the one or more legs to the static plate.

3. The electromagnetic brake according to claim 2 , wherein the moving plate comprises one or more connecting apertures through which the one or more fasteners extend.

4. The electromagnetic brake according to claim 3 , wherein the one or more connecting apertures in the moving plate are U-shaped.

5. The electromagnetic brake according to claim 3 , wherein the one or more connecting apertures in the moving plate have an open end at a radial edge of the moving plate.

6. The electromagnetic brake according to claim 5 , wherein the one or more legs comprise an aperture through which the corresponding one or more fasteners extend.

7. The electromagnetic brake according to claim 1 , wherein the core comprises an inner case that is received into the cylindrical portion.

8. The electromagnetic brake according to claim 7 , wherein a coil is received into the cylindrical portion.

9. The electromagnetic brake according to claim 1 , wherein the electromagnetic brake comprises one or more springs that exert a force onto the moving plate to bias the moving plate in a direction of the rotor.

10. The electromagnetic brake according to claim 9 , wherein the one or more springs are attached to a corresponding one of the one or more fasteners.

11. The electromagnetic brake according to claim 9 , wherein the moving plate is biased in a direction of the rotor via the one or more springs.

12. The electromagnetic brake according to claim 11 , wherein the moving plate is moved in a direction away from the rotor via an electrical coil.

13. A brake assembly for a vehicle brake system, the brake assembly comprising:
a motor; and
an electromagnetic brake that prevents movement of the motor after the motor is turned off, the electromagnetic brake including:
a core;
a static plate;
a moving plate located between the core and the static plate;
a rotor;
one or more legs that radially extend from the core, the one or more legs are configured to set a gap between the static plate and the rotor and/or between the moving plate and the rotor;
one or more fasteners that connect the one or more legs to the static plate; and
one or more springs configured to exert a force onto the moving plate to bias the moving plate in a direction of the rotor;
wherein the core comprises a flange that extends around a cylindrical portion, the one or more legs extend from the flange radially around the cylindrical portion.

14. The electromagnetic brake according to claim 13 , wherein the one or more legs are configured to deform, and after the deformation the gap is defined between the static plate and the rotor and/or between the moving plate and the rotor.

15. The electromagnetic brake according to claim 13 , wherein each of the one or more legs has an aperture through which the one or more fasteners extends.

16. The electromagnetic brake according to claim 15 , wherein the moving plate comprises one or more connecting apertures through which the one or more fasteners extend.

17. The electromagnetic brake according to claim 16 , wherein the one or more connecting apertures in the moving plate have an open end at a radial edge of the moving plate.

18. A vehicle brake comprising a brake caliper, one or more brake pistons, and the brake assembly according to claim 13 .

Assignees

• Akebono Brake Ind

Inventors

• Thomas Carla

Classifications

• B60T13/68 Primary

  by electrically-controlled valves {(B60T13/662 and B60T13/665 take precedence)} · CPC title

• B60T1/062

  acting on transmission parts · CPC title

• B60T13/741 Primary

  acting on an ultimate actuator · CPC title

• B60T13/746

  and mechanical transmission of the braking action · CPC title

• F16D55/226

  in which the common actuating member is moved axially {, e.g. floating caliper disc brakes} · CPC title