Friction clutch with intermediate element

Patent metadata

Field	Value
Publication number	US-10247254-B2
Application number	US-201715442828-A
Country	US
Kind code	B2
Filing date	Feb 27, 2017
Priority date	Apr 27, 2016
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A friction clutch assembly includes a friction clutch having at least two coupling elements coupled to each other and disposed axially movable with respect to each other. Immediately adjacent coupling elements are each assigned to two sides of a power path defined by the coupling of the at least two coupling elements. An intermediate element is provided on which the coupling elements of one side of the power path are held movably in an axial direction of the coupling elements. The intermediate element is switchable between a locked state and a free-running state. An actuator element opens and closes the friction clutch. In a free-running state, a free rotation of the held coupling elements with respect to the assigned side of the power path is permitted, and in a locked state the held coupling elements are blocked from free rotation.

First claim

The invention claimed is:

1. A friction clutch assembly, comprising:
a friction clutch including at least one first coupling element coupled to at least one second coupling element and disposed axially movable with respect to each other, where immediately adjacent coupling elements of the at least one first coupling element and the at least one second coupling element are each assigned to two sides of a power path defined by a coupling of the at least one first coupling element and the at least one second coupling element;
an intermediate element on which the at least one first coupling element of one side of the power path is held movably in an axial direction of the at least one first coupling element and the at least one second coupling element, where the intermediate element is switchable between a locked state and a free-running state; and
an actuator element for opening and closing the friction clutch, where in a free-running state a free rotation of the at least one first coupling element with respect to the assigned side of the power path is permitted such that the at least one first coupling element and the at least one second coupling element are configured to rotate at the same speed in the free-running state, and in a locked state the at least one first coupling element is blocked from free rotation such that the at least one second coupling element rotates relative to the at least one first coupling element in the locked state.

2. The friction clutch assembly of claim 1 , wherein the intermediate element holds the at least one first coupling element and the at least one second coupling element at their relevant outer or relevant inner circumference.

3. The friction clutch assembly of claim 1 , wherein the actuator element moves the intermediate element from the free-running state to the locked state.

4. The friction clutch assembly of claim 1 , wherein the intermediate element is transferred in the axial direction from the free-running state to the locked state.

5. The friction clutch assembly of claim 1 , wherein the intermediate element is switched from the free-running state to the locked state by means of a locking synchronization, a jaw clutch, or a selector gear.

6. The friction clutch assembly of claim 1 , wherein the actuator element initially moves the intermediate element from the free-running state to the locked state by axial movement before closing the friction clutch.

7. The friction clutch assembly of claim 1 , wherein the actuator element is operably driven hydraulically, electrically, pneumatically, or mechanically.

8. The friction clutch assembly of claim 1 , wherein the intermediate element is transferred from the free-running state to the locked state independent of the actuator element.

9. The friction clutch assembly of claim 1 , wherein the friction clutch comprises a wet-running or dry-running single-disk coupling or lamellar coupling.

10. The friction clutch assembly of claim 1 , wherein the actuator element is operably reset in the axial direction by a spring.

11. The friction clutch assembly of claim 1 , wherein the friction clutch comprises at least one carrier for movably holding the at least one first coupling element and the at least one second coupling element on one side of the power path, the carrier operably blocking rotation of the at least one first coupling element and the at least one second coupling element about their axis in a coupled state.

12. A friction clutch assembly comprising:
a first connecting element at a first side of the friction clutch assembly;
a second connecting element at a second side of the friction clutch assembly;
an intermediate element
fixed for rotation with one of the first connecting element and the second connecting element in an engaged state, and
freely rotatable relative to the one of the first connecting element and the second connecting element in a disengaged state such that the intermediate element is fixed for rotation with the other of the first connecting element and the second connecting element in the disengaged state; and

an actuator element configured to move the intermediate element from the engaged state to the disengaged state.

13. The assembly of claim 12 , further comprising:
at least one first coupling element coupled to the first connecting element; and
at least one second coupling element coupled to the intermediate element such that the at least one second coupling element and the intermediate element are disposed axially movable with respect to the at least one first coupling element to form a friction clutch.

14. The assembly of claim 13 , wherein the at least one second coupling element is coupled to the intermediate element at one of an outer circumference of the at least one second coupling element and an inner circumference of the at least one second coupling element.

15. The assembly of claim 13 , wherein the actuator element initially moves the intermediate element from the disengaged state to the engaged state by axial movement before closing the friction clutch.

16. The assembly of claim 13 , wherein the friction clutch comprises one of a wet-running single-disk coupling, wet-running lamellar coupling, dry-running single-disk coupling, and dry-running lamellar coupling.

17. The assembly of claim 12 , wherein the intermediate element is configured to switch from the disengaged state to the engaged state with one of a locking synchronization, a jaw clutch, and a selector gear.

18. The assembly of claim 12 , wherein the actuator element is operably driven one of hydraulically, electrically, pneumatically, and mechanically.

19. The assembly of claim 12 , wherein the actuator element is operably reset in the axial direction by a spring.

20. A friction clutch assembly comprising:
a first connecting element at a first side of the friction clutch assembly;
at least one first coupling element coupled to the first connecting element;
a second connecting element at a second side of the friction clutch assembly;
an intermediate element;
at least one second coupling element coupled to the intermediate element such that the at least one second coupling element is disposed axially movable with respect to the at least one first coupling element to form a friction clutch, wherein the intermediate element is fixed for rotation with one of the first connecting element and the second connecting element in an engaged state, and the intermediate element is freely rotatable relative to the one of the first connecting element and the second connecting element in a disengaged state such that the intermediate element is fixed for rotation with the other of the first connecting element and the second connecting element in the disengaged state; and
an actuator element configured to close the friction clutch, wherein the intermediate element is transferred from the disengaged state to the engaged state independent of the actuator element.

Assignees

• Deere & Co

Inventors

• Raisch Stefan

Classifications

• F16D13/00

  Friction clutches (arrangements for synchronisation F16D23/02) · CPC title

• F16D2300/02

  Overheat protection, i.e. means for protection against overheating · CPC title

• F16D25/0638

  with more than two discs, e.g. multiple lamellae · CPC title

• F16D13/52 Primary

  Clutches with multiple lamellae {; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member (F16D13/385 takes precedence)} · CPC title

• F16D25/10

  Clutch systems with a plurality of fluid-actuated clutches (arrangements or mounting of clutches in vehicles B60K17/00) · CPC title