Overload clutch for a drive gear mechanism for driving components of an aircraft wing and drive gear mechanism with an overload clutch

Patent metadata

Field	Value
Publication number	US-11274712-B2
Application number	US-201816021150-A
Country	US
Kind code	B2
Filing date	Jun 28, 2018
Priority date	Jul 3, 2017
Publication date	Mar 15, 2022
Grant date	Mar 15, 2022

Abstract

The invention relates to an overload clutch for a drive gear mechanism for driving components of an aircraft wing, in particular for driving an outer slat flap of an aircraft wing, with at least one driving and at least one driven clutch body and with at least one torque transmission body arranged therebetween. The invention further relates to a drive gear mechanism with a corresponding overload clutch.

First claim

The invention claimed is:

1. Overload clutch for a drive gear mechanism for driving components of an aircraft wing, in particular for driving an outer slat flap of an aircraft wing, comprising a driving clutch body, a driven clutch body, a torque transmission body arranged therebetween, and a spring assembly, wherein
at least one of the clutch bodies is displaceably mounted in an axial direction, relative to the other, against the force effect of the spring assembly, and,
additionally comprising a torque-transmitting axial guide arranged to transmit rotational movement to the driven clutch body and enable axial displacement of the driven clutch body, and including axially-extending recesses arranged to receive corresponding formations of the driven clutch body to be axially displaceable,
wherein the axial guide is arranged radially outside the driving and driven clutch bodies.

2. Overload clutch according to claim 1 , wherein the spring assembly is a particularly bi-stable diaphragm spring assembly, and mounted on the driving and driven clutch bodies to axially tilt toward the clutch bodies at an acute angle in coupled, unstressed state and tilt away from the clutch bodies at an obtuse angle in decoupled, stressed state.

3. Overload clutch according to claim 1 , wherein the clutch bodies can be coupled via at least one ball ramp mechanism.

4. Overload clutch according to claim 1 , wherein the spring assembly includes a particularly complete inner and/or outer enclosure for providing a power reserve.

5. Overload clutch according to claim 1 , wherein a triggering indicator is provided, which indicates the position of at least one clutch body and/or of the spring assembly.

6. Overload clutch according to claim 1 , wherein the spring assembly is mounted rotatably relative to one of the clutch bodies via a bearing provided radially inside thereto, in particular a ball bearing.

7. Overload clutch according to claim 1 , wherein the axial guide is embodied with rolling bodies and/or sliding surfaces.

8. Overload clutch according to claim 7 , wherein the rolling bodies and/or sliding surfaces comprise a slip coating and/or at least one inserted sliding body.

9. Drive gear mechanism for driving components of an aircraft wing, with at least one overload clutch according to claim 1 .

10. Overload clutch according to claim 1 , additionally comprising
an additional radial mounting for the spring assembly and an adjusting screw/nut and/or shim situated on the mounting axially outside of the spring assembly from the clutch bodies, for adjusting tension of the spring assembly.

11. Overload clutch for a drive gear mechanism for driving components of an aircraft wing, in particular for driving an outer slat flap of an aircraft wing, comprising a driving clutch body, a driven clutch body, a torque transmission body arranged therebetween, and a spring assembly, wherein
at least one of the clutch bodies is displaceably mounted in an axial direction, relative to the other, against force effect of the spring assembly, and,
additionally comprising a torque-transmitting axial guide arranged to transmit rotational movement to the driven clutch body and enable axial displacement of the driven clutch body, and including axially-extending recesses arranged radially inside the driving and driven clutch bodies,
balls axially arranged with respect to one another in the recesses of the axial guide, and
a catching element having a cage encompassing the torque transmission body, to ensure the torque transmission body at least partially remains in a recess formed in the driven clutch body in both coupled and decoupled states,
wherein said cage and recess in the driven clutch body are situated radially outwardly from said axially-extending recesses.

12. Overload clutch according to claim 11 , wherein a catching element is provided for carrying along the torque transmission bodies, and the catching element secures the torque transmission bodies relative to one of the clutch bodies.

13. Overload clutch according to claim 11 , wherein the spring assembly is a bi-stable diaphragm spring assembly, and mounted on the driving and driven clutch bodies to axially tilt toward the clutch bodies at an acute angle in coupled, unstressed state and tilt away from the clutch bodies at an obtuse angle in decoupled, stressed state.

14. Overload clutch according to claim 11 , wherein the rolling bodies comprise a slip coating and/or at least one inserted sliding body.

15. Drive gear mechanism for driving components of an aircraft wing, with at least one overload clutch according to claim 11 .

Assignees

• Liebherr Aerospace Lindenberg GmbH

Inventors

• Stegmann Habib
• Schweitzer Boris
• Gaile Anton

Classifications

• Y02T50/40

  Weight reduction · CPC title

• F16D7/08

  moving axially between engagement and disengagement · CPC title

• F16D43/206 Primary

  moving axially between engagement and disengagement · CPC title

• B64C13/28 Primary

  mechanical · CPC title

• B64C13/341

  having duplication or stand-by provisions · CPC title