US 8,186,237 B2 · Change speed transmission

Abstract

A transmission, in particular a dual clutch transmission, has a plurality of transmission shafts and a fastening apparatus for at least one fixed gear on one of the transmission shafts. The fixed gear is held axially on the transmission shaft by way of a fastening nut. The fixed gear is formed with a recess around the transmission shaft in a region that lies radially below the gear toothing system. A fastening sleeve is positioned in the recess between the fixed gear and the transmission shaft in a section which adjoins a fastening nut. During the clamping of the fastening nut, the latter bears against the fastening sleeve. As a result, the transmission of micromovements to the fastening nut is minimized or prevented, with the result that loosening of the fastening nut does not take place during the operation of the transmission.

Claims11

Dependent claims

A transmission, comprising:

a plurality of transmission shafts;
a transmission gearwheel fastened to one of said transmission shafts, said transmission gearwheel being configured as a fixed gear having an inner surface;
a fastening nut holding said fixed gear axially on said transmission shaft;
said fixed gear having a recess formed around said transmission shaft in a section adjoining said fastening nut;
and
a fastening sleeve disposed in said recess, between said fixed gear and said transmission shaft, said fastening sleeve and said fastening nut being integrally formed in a single piece, said fastening sleeve having an outer surface that remains spaced apart from said inner surface of said fixed gear.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/187,758Filed 7 Aug 2008

Priority

DE 10 2007 039 48121 Aug 2007

Published

US 2009/0049939 A126 Feb 2009

Granted

29 May 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16H 57/0025
Shaft assemblies for gearings: with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines,…
F16D 1/06
Couplings for rigidly connecting two coaxial shafts or other movable machine elements: for attachment of a member on a shaft or on a shaft-end
F16D 1/108
Quick-acting couplings in which the parts are connected by simply bringing them together axially: having retaining means rotating with the…
F16D 2001/103
Quick-acting couplings in which the parts are connected by simply bringing them together axially: the torque is transmitted via splined connections

Change speed transmission

Life of this patent

Change speed transmission

Life of this patent

Abstract

Claims11