Electric actuator with a manual drive means

Patent metadata

Field	Value
Publication number	US-9660501-B2
Application number	US-201415101105-A
Country	US
Kind code	B2
Filing date	Sep 19, 2014
Priority date	Dec 5, 2013
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

An actuator including a frame, an electric motor fastened to the frame and to a rotor that is constrained to rotate with an outlet shaft, and a connector electrically connected to the motor and secured to the frame to be connected to a complementary connector. The actuator includes a secondary drive device having a secondary shaft having a first end that extends outside the frame and is arranged to be coupled to rotate with a rotary drive tool, a second end of the secondary shaft in rotation coupled with the outlet shaft, and an activation rod opening out into the connector is secured to the frame and arranged to prevent the secondary shaft from being coupled in rotation with the outlet shaft only when the complementary connector is connected to the connector secured to the frame.

First claim

The invention claimed is:

1. An actuator comprising a frame, an electric motor that is fastened to the frame and has a rotor that is constrained to rotate with an outlet shaft, and a connector that is electrically connected to the motor and that is secured to the frame in order to be connected to a complementary connector, the actuator includes a secondary drive device comprising:
a secondary shaft having a first end that extends outside the frame and that is arranged to be coupled to rotate with a rotary drive tool;
coupling mechanism for coupling a second end of the secondary shaft in rotation with the outlet shaft; and
activation mechanism for activating the coupling mechanism, activation mechanism that includes an activation rod opening out into the connector secured to the frame and that is arranged to prevent the secondary shaft being coupled in rotation with the outlet shaft only when the complementary connector is connected to the connector secured to the frame.

2. An actuator according to claim 1 , wherein the coupling mechanism comprises a first element secured to the second end of the secondary shaft and a second element connected to rotate with the outlet shaft, the secondary shaft being mounted to slide in a first sliding direction between a first position in which the two elements are disengaged from each other and a second position in which the two elements are coupled to rotate with each other, a resilient member urging the secondary shaft into its first position.

3. An actuator according to claim 2 , wherein the activation rod is mounted to slide along a second sliding direction substantially perpendicular to the first sliding direction between a first position in which the rod has a first end projecting in the vicinity of the connector secured to the frame and a second end disengaged from the coupling mechanism, and a second position in which, the activation rod is pushed in relative to the frame and the second end projects between the elements in order to prevent them being coupled together.

4. An actuator according to claim 1 , including a brake to hold the outlet shaft in position in the absence of power supply to the motor.

5. An actuator according to claim 1 , including a torque limiter to avoid damaging a control surface when an operator brings said control surface into abutment without reducing a speed of rotation of a maintenance tool.

Assignees

• Sagem Defense Securite

Inventors

• Viennot Severi
• Cartry Thierry
• Werquin Mickael
• Chavignier Louis

Classifications

• H02K7/116 Primary

  with gears · CPC title

• B64C13/341

  having duplication or stand-by provisions · CPC title

• H02K7/00

  Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines · CPC title

• H02K7/14

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title

• H02K2213/06

  Machines characterised by the presence of fail safe, back up, redundant or other similar emergency arrangements · CPC title