Electric park brake with electromagnetic brake
AssigneeAkebono Brake Industry Co., Ltd.
InventorCarla Thomas
Life of this patent
Estimating the term…
Abstract
A brake assembly comprising: (a) a caliper including: (i) one or more pistons, (b) one or more rotary to linear actuators that provides an axial force to move the one or more pistons, (c) a motor gear unit in communication with the one or more rotary to linear actuators, the motor gear unit including: (i) a motor, and (ii) an electromagnetic brake that prevents movement of the motor gear unit, the pistons, or both when the motor is turned off so that the brake apply is maintained.
Claims20
1) A brake assembly comprising:
- a. a caliper including:
- i. one or more pistons,
- b. one or more rotary to linear actuators that provides an axial force to move the one or more pistons,
- c. a motor gear unit in communication with the one or more rotary to linear actuators, the motor gear unit including:
- i. a motor, and
- ii. an electromagnetic brake that prevents movement of the motor gear unit, the pistons, or both when the motor is turned off so that the brake apply is maintained.
9) A brake assembly comprising:
- a. a caliper including:
- i. one or more pistons,
- b. one or more rotary to linear actuators that provides an axial force to move the one or more pistons,
- c. a motor gear unit in communication with the one or more rotary to linear actuators, the motor gear unit including:
- i. a motor, and
- ii. an electromagnetic brake that prevents movement of the motor gear unit, the pistons, or both when the motor is turned off so that the brake apply is maintained, the electromagnetic brake including:
- 1. a core having an outer case with an inner case press fit into the outer case.
15)A method comprising:
- a. creating an electromagnetic brake by:
- i. forming a core by press fitting an inner case into an outer case;
- ii. placing one or more electrical coils into the core;
- iii. placing a moving plate proximate to the electromagnet;
- and
- iv. placing a rotor adjacent to the moving plate;
- b. connecting the electromagnetic brake to a motor by extending a shaft of a motor into the rotor;
- and
- c. connecting the motor and electromagnetic brake to a caliper.
16) The method of claim 15, wherein the core includes a plurality of legs and the method includes a step of deforming each of the plurality of legs.
20) The method of claim 15, wherein an air gap is created between the one or more electrical coils and the moving plate by plastically deforming each of the plurality of legs and allowing the plurality of legs to elastically recover.
Dependencies are inferred from the claim text.