Brake device

Patent metadata

Field	Value
Publication number	US-9956969-B2
Application number	US-201514701034-A
Country	US
Kind code	B2
Filing date	Apr 30, 2015
Priority date	Apr 30, 2015
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

An apparatus includes a housing structure and a magnetic assembly. The magnetic assembly is configured to slide within the housing structure in a first direction associated with a direction of travel of the housing structure and in a second direction that is opposite of the first direction. The magnetic assembly includes a first pole plate having a first polarity and a second pole plate having a second polarity that is opposite of the first polarity.

First claim

What is claimed is:

1. An apparatus comprising:
a housing structure, wherein the housing structure includes a wall and a bumper coupled to the wall, and wherein the bumper is positioned between the wall and a magnetic assembly; and
the magnetic assembly, wherein the magnetic assembly is configured to slide within the housing structure in a first direction associated with a direction of travel of the housing structure and in a second direction that is opposite of the first direction, the magnetic assembly comprising:
a first pole plate having a first polarity; and
a second pole plate having a second polarity that is opposite of the first polarity.

2. The apparatus of claim 1 , wherein the first pole plate is spaced apart from the second pole plate at a predetermined spacing to enable the first pole plate and the second pole plate to align with a set of stator poles of an induction motor that are spaced apart at approximately the same predetermined spacing.

3. The apparatus of claim 2 , wherein a distance that the magnetic assembly may slide within the housing structure is at least greater than the predetermined spacing between the first pole plate and the second pole plate, and wherein the housing structure is non-magnetic.

4. The apparatus of claim 1 , wherein the magnetic assembly includes a first magnet positioned between the first pole plate and the second pole plate.

5. The apparatus of claim 4 , wherein magnetic assembly further comprises:
a third pole plate having the first polarity; and
a second magnet, the second magnet positioned between the second pole plate and the third pole plate.

6. The apparatus of claim 1 , wherein the housing structure includes a base having a slot configured to guide movement of the magnetic assembly within the housing structure.

7. The apparatus of claim 1 , wherein the magnetic assembly includes:
a first magnet in physical contact with the first pole plate and the second pole plate;
a third pole plate having the first polarity; and
a second magnet, the second magnet in physical contact with the second pole plate and the third pole plate.

8. An apparatus comprising:
a housing structure, wherein the housing structure includes a wall, and wherein the wall includes a plate opening configured to receive a safety plate; and
a magnetic assembly, wherein the magnetic assembly is configured to slide within the housing structure in a first direction associated with a direction of travel of the housing structure and in a second direction that is opposite of the first direction, the magnetic assembly comprising:
a first pole plate having a first polarity; and
a second pole plate having a second polarity that is opposite of the first polarity.

9. The apparatus of claim 8 , further comprising the safety plate, wherein the safety plate is configured to slide within the plate opening, wherein the safety plate is positioned at least partially within the housing structure, and wherein the safety plate is configured to isolate one or more magnetic fields associated with the magnetic assembly.

10. The apparatus of claim 9 , wherein the safety plate comprises steel, wherein the safety plate is configured to inhibit movement of the magnetic assembly, and wherein the safety plate is configured to magnetically couple to the magnetic assembly.

11. A method comprising:
at a brake device including a housing structure and a magnetic assembly coupled to the housing structure, the magnetic assembly configured to move relative to the housing structure in a first direction and in a second direction within the housing structure, wherein the housing structure includes a wall and a bumper coupled to the wall, wherein the bumper is positioned between the wall and a magnetic assembly, and wherein the magnetic assembly includes a first pole plate having a first polarity and a second pole plate having a second polarity that is opposite of the first polarity, performing:
moving the housing structure in the first direction that is the same as a direction of travel of the brake device;
applying, by the magnetic assembly to the housing structure, a first force that is applied in an opposite direction of the direction of travel; and
moving the magnetic assembly in the first direction responsive to a second force applied by the housing structure in the direction of travel.

12. The method of claim 11 , wherein, responsive to the second force, the magnetic assembly is moved from a first position in which the magnetic assembly is magnetically coupled to a first set of stator poles of an inductor motor to a second position in which the magnetic assembly is magnetically coupled to a second set of stator poles of the inductor motor.

13. The method of claim 11 , wherein the second force that causes the magnetic assembly to move in the first direction is greater than the first force applied by the magnetic assembly in the opposite direction.

14. The method of claim 11 , wherein the first force corresponds to a braking force that is applied by the brake device to a vehicle to which the brake device is coupled.

15. The method of claim 11 , further comprising, after the magnetic assembly is moved in the first direction responsive to the second force:
moving the housing structure in the first direction;
applying, by the magnetic assembly to the housing structure, a third force that is in applied in the opposite direction of the direction of travel; and
applying, by the housing structure to the magnetic assembly, a fourth force that is applied in the direction of travel; and
if the third force applied by the magnetic assembly to the housing structure is greater than the fourth force applied by the housing structure to the magnetic assembly, stopping movement of the housing structure in the direction of travel.

16. The method of claim 11 , wherein the housing structure includes a bumper, wherein the housing structure is moved in the first direction to cause the bumper to contact the magnetic assembly, and wherein the first force is applied to the housing structure and the second force is applied to the magnetic assembly via the bumper.

17. An apparatus comprising:
a housing structure including a slot;
a magnetic assembly slidably disposed within the slot, the slot configured to guide movement of the magnetic assembly in the housing structure, wherein the magnetic assembly is configured to slide in a first direction associated with a direction of travel of the housing structure and in a second direction that is opposite of the first direction, the magnetic assembly comprising:
a first pole plate having a first polarity; and
a second pole plate having a second polarity that is opposite of the first polarity; and

a bumper coupled to a wall of the housing structure and positioned between the wall and the magnetic assembly.

18. The apparatus of claim 17 , wherein the housing structure is configured to be coupled to a vehicle such that the housing structure moves in the first direction that is the same as the direction of travel of the vehicle, and the magnetic assembly is configured to magnetically couple to a first set of stator poles of a primary of an inductor motor, such that the housing structure moves in the direction of travel while the magnetic assembly slidable within the housing structure remains relatively fixed in alignment with the first set of stator poles of the primary of the induction motor, so that the magnetic assembly contacts and applies a first force to the housing structure that is applied in an opposite direction of the directio

Assignees

• Boeing Co

Inventors

• Beron-Rawdon Deborah A
• Atmur Robert J
• Cameron Jr Douglas C
• Sargent William P

Classifications

• F16D63/002

  Brakes with direct electrical or electro-magnetic actuation · CPC title

• B60T13/748

  acting on electro-magnetic brakes (combined with fluid-pressure brake systems B60T13/667) · CPC title

• B61H13/36

  Beams; Suspension thereof · CPC title

• F16D63/008

  Brakes acting on a linearly moving member · CPC title

• B61H7/08 Primary

  electromagnetically operated · CPC title