Shiftable twin gear for a twin-clutch transmission and twin-clutch transmission
AssigneeDaimler AG
InventorsIngo Pfannkuchen, Harald Rüdle
Life of this patent
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Abstract
In a shiftable twin gear for a twin-clutch transmission and a twin-clutch transmission, to reduce the effort and costs involved in bearing-mounted idler gears, and in order to provide a simplified twin-clutch transmission a bearing sleeve which is non-rotatable with respect to a first gear body and which has a first bearing region for the bearing support of a second gear body is in the form of a separate component which is press-fitted to the first gear body.
Claims7
A shiftable twin gear for a twin-clutch transmission, comprising a first gear body (102) to be supported with respect to a shaft (40) and a second gear body (104), which gear bodies can be coupled to each other for common rotation, comprising a bearing sleeve (106) connected to the first gear body (102) for rotation therewith and having a first bearing region for supporting the second gear body (104), the bearing sleeve (106) being a separate component and the first gear body (102) being mounted on the bearing sleeve (106) by a press fit for rotation with the bearing sleeve (106), the bearing sleeve being a thin-walled tube with a collar (112) forming, at its end opposite the first gear body (102), a stop (114) against which the second gear body (104) bears.
A twin-clutch transmission, with a hollow shaft (24) and a concentric inner shaft (22) at least one of which can be coupled to a drive engine (12) via a twin clutch (26), with a first and a second countershaft (34, 40) having drive pinions (58, 60) meshing a drive gear (62) of a differential unit (14), the hollow shaft (24) being provided with fixed gears (28, 30) meshing with idler gears rotatably mounted on the first and the second countershafts (34, 40), respectively, with a first idler gear (72) for forming the reverse gear being rotatably supported on a bearing sleeve (106) and being arranged adjacent to a second idler gear (52) for representing a forward gear, the first idler gear (72) forming the reverse gear and the adjacent second idler gear (52) for establishing a forward gear being in the form of a shiftable twin gear structure (100) the second idler gear (52) being mounted by a press fit to the bearing sleeve (106) for rotation with the bearing sleeve (106) the bearing sleeve (106) being a separate component and the first gear body (102) being mounted on the bearing sleeve (106) by a press fit for rotation with the bearing sleeve (106), the bearing sleeve being a thin-walled tube with a collar (112) forming, at its end opposite the first gear body (102), a stop (114) against which the second gear body (104) bears.
Dependencies are inferred from the claim text.