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US 8,556,739 B2Granted
Main shaft for a transmission or countershaft for a transmission
AssigneeDaimler AG
InventorsAndreas Kopf, Alexander Weidler
Life of this patent
Estimating the term…
Abstract
A main shaft for a transmission or a countershaft for a transmission shall be constructed in an especially light-weight manner. The transmission of high torques, such as is the case for the main shaft or countershaft for a transmission, is problematic when the base body of the shaft consists of a fiber composite material. A metal element (20, 22) is now laminated into the base body, and a gearwheel (28, 30) can then be connected to this metal element (20, 22) in a force-fit manner, so that high torques can be transmitted.
Claims7
A main shaft (10) for a transmission or countershaft for a transmission, with
- a base body (12), said base body (12) having two ends (24, 26), wherein the base body (12) comprises a tubular inner shell (14) of a fiber composite material and a tubular outer shell (16) of fiber composite material, between which inner and outer shells is arranged an open cell foam material (18), wherein the open-cell foam is a metal foam and is suited for transmitting oil through the open-cell foam between the two shells, and
- wherein at least one metal element (22) is arranged at one of the ends of the base body (12) and laminated to the inner shell (14) and the outer shell (16) of fiber composite material.
Dependencies are inferred from the claim text.