Clutch

Patent metadata

Field	Value
Publication number	US-10030719-B2
Application number	US-201615190708-A
Country	US
Kind code	B2
Filing date	Jun 23, 2016
Priority date	Aug 27, 2015
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A clutch ( 1 ) with an inner ring ( 2 ) arranged about an axis of rotation (d) and an outer ring ( 3 ) arranged coaxially in reference thereto, as well as an elastic clamping ring ( 4 ) arranged between them and radially limited thereby, with the inner ring ( 2 ) and the clamping ring ( 4 ) resting on each other via a ramp device ( 9 ), arranged bi-directionally effective in the circumferential direction, and clamping segments ( 13 ) pointing radially outwardly and arranged distributed in the circumferential direction, form in case of a radial displacement of the clamping ring ( 4 ) forming with the outer ring ( 3 ) a clamping connection in at least one circumferential direction. In a further aspect, a radial displacement of the clamping ring ( 4 ) is provided via a ramp device ( 12 ) effective in the axial direction, switched by an axial displacement of the inner ring ( 2 ) in reference to the clamping ring ( 4 ).

First claim

The invention claimed is:

1. A clutch comprising an inner ring arranged about an axis of rotation, an outer ring arranged coaxially in reference to the inner ring, an elastic clamping ring arranged between and radially limited by the inner ring and the outer ring, the inner ring and the clamping ring resting on each other via a ramp device arranged bi-directionally effective in a circumferential direction, the clamping ring including clamping segments pointing radially outwardly and arranged distributed over a circumference, such that a clamping connection is provided during a radial displacement of the clamping ring with respect to the outer ring, at least in the circumferential direction, the ramp device provides for the radial displacement of the clamping ring, the ramp device is effective in an axial direction and switched by an axial displacement of the inner ring relative to the clamping ring, the clamping segments have, in cross-section, peaks which form the clamping connection with an inner perimeter of the outer ring, and the clamping segments form the clamping connection radially outward with an annular groove of the outer ring.

2. The clutch according to claim 1 , wherein the clamping ring is open at one side.

3. The clutch according to claim 1 , wherein the clamping segments are separated from each other via recesses extending radially inward, and a pair of circumferentially adjacent recesses have different profiles from each other with different radial depths.

4. The clutch according to claim 3 , wherein the clamping segments are separated from each other via recesses inserted radially from inside.

5. The clutch according to claim 4 , wherein the radially inner and radially outer recesses are arranged on a same circumference.

6. The clutch according to claim 1 , wherein the peaks of the clamping segments have a trapezoidal profile.

7. The clutch according to claim 6 , wherein the annular groove of the outer ring has a triangular profile with an angled tip.

Assignees

• Schaeffler Technologies Ag

Inventors

• Hartmann Horst
• Schimpf Ralph

Classifications

• F16D13/28

  with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member · CPC title

• F16D41/20

  with expandable or contractable clamping ring or band (F16D41/02, F16D41/24 take precedence) · CPC title

• F16D2023/123

  Clutch actuation by cams, ramps or ball-screw mechanisms · CPC title

• F16D13/18 Primary

  shaped as linked or separately-pivoted segments · CPC title

• F16D15/00

  Clutches with wedging balls or rollers or with other wedgeable separate clutching members (freewheels, freewheel clutches F16D41/00) · CPC title