Integral actuator design

Patent metadata

Field	Value
Publication number	US-9641044-B2
Application number	US-201314067003-A
Country	US
Kind code	B2
Filing date	Oct 30, 2013
Priority date	Oct 30, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

An integrated actuator drive unit (ADU) assembly for an electric motor actuator is disclosed. The integrated ADU assembly may comprise at least one of an integrally formed ring gear, an integrally formed thrust bearing and integrally formed load cell. The integrated ADU assembly may comprise a portion of an electromechanical actuator. The electromechanical actuator may be utilized for aircraft braking systems.

First claim

What is claimed is:

1. An electric motor actuator comprising:
an electric motor actuator housing;
a ball nut coupled to the electric motor actuator housing;
a ball screw in communication with the ball nut via a race; and
an actuator drive unit housing coupled to the ball screw to form a thrust bearing,
wherein the actuator drive unit housing comprises an integrally formed ring gear, an integrally formed thrust bearing race, and an integrally formed load cell, wherein the actuator drive unit housing forms a column of the integrally formed load cell.

2. The electric motor actuator of claim 1 , wherein the integrally formed load cell comprises a plurality of columns defined by openings between adjacent columns.

3. The electric motor actuator of claim 2 , wherein at least one of the plurality of columns is configured to orient the direction of force through the integrally formed load cell.

4. The electric motor actuator of claim 1 , wherein the integrally formed load cell comprises a channel configured to route a sensor wire.

5. The electric motor actuator of claim 1 , wherein the column of the integrally formed load cell defines a recess, and wherein a strain gauge is disposed within the recess.

6. The electric motor actuator of claim 1 , further comprising a sensor flush mounted on the actuator drive unit housing within a recess.

7. The electric motor actuator of claim 1 , wherein teeth of the integrally formed ring gear are formed in an interior surface of the actuator drive unit housing.

Assignees

• Goodrich Corp

Inventors

• Drennen David
• Klode Harald
• Rehfus Kevin

Classifications

• F16D65/18

  adapted for drawing members together {, e.g. for disc brakes} · CPC title

• H02K7/088

  radially supporting the rotor directly · CPC title

• B60T13/741

  acting on an ultimate actuator · CPC title

• F16D2125/36

  Helical cams, Ball-rotating ramps · CPC title

• H02K11/24

  Devices for sensing torque, or actuated thereby (H02K11/27 takes precedence) · CPC title