| 摘要 |
The invention relates to a synchronising ring for a synchronising apparatus of a switchable gear changing transmission, including a conical ring body ( 2 ) with an inner friction surface ( 3 ) and an outer installation surface, which bound the ring body 2 radially in a peripheral direction in each case and extend conically at a pre-determined friction angle about an axial synchronising ring axis ( 4 ) of the synchronising ring ( 1 ), wherein the ring body ( 2 ) is bounded in the axial direction at a largest cone diameter by a gear wheel surface ( 5 ) with a gear wheel ( 6 ) extending substantially perpendicular to the synchronising ring axis ( 4 ) and is bounded at a smallest cone diameter by a surface ( 7 ) and wherein a recess ( 9 ) is provided at the surface ( 7 ) of the synchronising ring ( 1 ) for fixing the inner ring ( 8 ) with a security against rotation ( 10 ) provided at the inner ring ( 8 ), in particular in the form of a lug ( 10 ). In accordance with the invention a raised portion ( 11 ) or displaced portion ( 11 ) is provided at the surface ( 7 ) of the synchronising ring ( 1 ) and an undercut ( 12 ) is provided at the inner ring ( 8 ), so that the displaced portion ( 11 ) can engage in the undercut ( 12 ) in the installed state in such a way that an overall constructional height ( 13 ) of the synchronising ring set including the inner ring ( 8 ) and the synchronising ring ( 1 ) is not enlarged by the displaced portion ( 11 ). The invention further relates to a synchronising ring set and to a manual gear changing transmission for a motor vehicle with a synchronising ring ( 1 ) in accordance with the invention.
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