Clamping device for a shaft-hub connection

Patent metadata

Field	Value
Publication number	US-10247249-B2
Application number	US-201313845012-A
Country	US
Kind code	B2
Filing date	Mar 17, 2013
Priority date	Nov 24, 2010
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A clamping device for a shaft-hub connection in a torque-transferring device in a drive train of a vehicle. The connection is an axial spline connection between an externally toothed shaft and an internally toothed hub. An externally toothed ring is provided for clamping the shaft and hub, wherein the externally toothed ring includes an annular body having external teeth. Fastening tongues of leaf-spring-type design are provided on and extend from the radially inner side of the annular body. Outer ends of the leaf-spring-type fastening tongues are attached to the shaft, and the teeth of the toothed ring mesh with teeth of the hub. By rotating the toothed ring against a force provided by the fastening tongues, a clamping force is produced on the shaft-hub connection in the assembled state and is introduced into the shaft-hub connection through the teeth and fastening tongues.

First claim

What is claimed is:

1. A clamping device for an axially engageable shaft-hub connection in a torque-transferring device in a drive train of a vehicle, said clamping device comprising:
an axial spline connection between an externally toothed shaft and an internally toothed hub for an axial plug connection of the externally toothed shaft and the internally toothed hub;
a toothed ring for circumferentially clamping the externally toothed shaft and the internally toothed hub when they form the axial spline connection,
wherein the toothed ring includes an annular body having teeth with intervening recesses formed on one of a radially inner circumferential edge and a radially outer circumferential edge, and includes a plurality of fastening tongues carried by the annular body and extending circumferentially relative to the annular body from one of the radially inner circumferential edge and the radially outer circumferential edge of the annular body,
wherein the fastening tongues have a curvature in the axial direction of the toothed ring and have a second end connected to the annular body of the toothed ring and a first end spaced circumferentially from the second end and spaced axially from the annular body, the first end adapted to be connected to one of the toothed components that form the axial spline connection,
wherein the fastening tongues have elasticity and have a curvature relative to an axial direction of the annular body of the toothed ring, so that when the first ends of the fastening tongues are attached to one of the toothed components that form the axial spline connection, the one toothed component to which the fastening tongue first ends are attached and the annular body of the toothed ring lie in different axial planes,
wherein the fastening tongues have both circumferential and axial elasticity relative to the annular body of the toothed ring to allow both axial and circumferential relative movement between the hub and the shaft of the axial spline connection;
wherein the teeth of the toothed ring mesh with one of teeth of the internally toothed hub and teeth of the externally toothed shaft; and
wherein by rotating the toothed ring against a circumferential force exerted by the fastening tongues a circumferential clamping force is produced on the shaft-hub connection when the axial spline connection is in a connected state, which circumferential clamping force is introduced into the shaft-hub axial spline connection through connection of the teeth of the toothed ring with one of the externally toothed shaft and the internally toothed hub and connection of the fastening tongues with the other of the externally toothed shaft and the internally toothed hub to eliminate tooth contact noises that develop as a result of play in the shaft-hub connection of the axial spline connection.

2. The clamping device for an axially engageable shaft-hub connection according to claim 1 , wherein the fastening tongues are made of elastic spring sheet metal material.

3. The clamping device for an axially engageable shaft-hub connection according to claim 1 , wherein the fastening tongues are connected to one of the hub and the shaft by a riveted connection.

4. A torque-transferring system comprising:
a torsional vibration damping device and a dual clutch that are axially engageable by an axial plug connection arrangement,
wherein the torsional vibration damping device includes an output flange having internal teeth, and
an input part of the dual clutch includes external teeth;
wherein the internal teeth and the external teeth form a spline connection with each other and are connected to each other by a clamping device according to claim 1 .

5. The clamping device for an axially engageable shaft-hub connection according to claim 1 , wherein the toothed ring is formed from an elastic spring sheet metal material.

6. The clamping device for an axially engageable shaft-hub connection according to claim 1 , wherein the fastening tongues are elongated members having leaf spring flexibility.

7. The clamping device for an axially engageable shaft-hub connection according to claim 1 , wherein the teeth of the toothed ring have chamfered edges on their faces to allow relative rotation during axial connection of the shaft-hub connection to facilitate assembly of the components that are operatively joined by the axial plug in connection.

8. The clamping device for an axially engageable shaft-hub connection according to claim 1 , wherein the outer ends of the fastening tongues extend through respective circumferentially spaced openings formed in the hub.

9. The clamping device for an axially engageable shaft-hub connection according to claim 8 , wherein the hub is an internally toothed hub forming an output flange of a torsional vibration damper.

10. The clamping device for an axially engageable shaft-hub connection according to claim 8 , wherein the circumferentially spaced openings formed in the hub are T-shaped openings, and the toothed ring includes correspondingly shaped, circumferentially spaced, T-shaped holding tabs for passage through and engagement with the T-shaped openings in the hub for positioning the toothed ring relative to the hub in a preassembled state to enable force-free assembly of the shaft-hub connection.

Assignees

• Vogel Florian
• Schaeffler Technologies Ag

Inventors

• Vogel Florian

Classifications

• F16D3/12 Primary

  specially adapted for accumulation of energy to absorb shocks or vibration (by making use of fluid elements F16D3/80) · CPC title

• F16D2300/12

  Mounting or assembling · CPC title

• F16D2001/103

  the torque is transmitted via splined connections · CPC title

• F16D1/10

  Quick-acting couplings in which the parts are connected by simply bringing them together axially · CPC title

• F16D2013/703

  the pressure plate on the flywheel side is combined with a damper · CPC title