Synchronization unit for a switchable gear changing transmission
A technology for synchronizing units and transmissions, applied in the field of synchronizing rings, can solve the problems of complex geometric shapes and increased radial dimensions of gearboxes, and achieve the effect of preventing harmful vibration and ensuring safe operation.
Inactive Publication Date: 2017-07-14
OERLIKON FRICTION SYST GERMANY
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Problems solved by technology
[0024] Another disadvantage of the known synchronizing units is that adequately dimensioned teeth require corresponding dimensions in the radial direction
This leads to an increase in the radial dimensions of the friction rings and synchronizing rings and thus the entire synchronizing unit and thus the entire gearbox
[0025] An essential disadvantage of the known synchronizing units is that, due to their complex shape caused by toothing, friction rings or synchronizing rings can only be produced in complex, expensive forging or sintering processes
Therefore, due to their complex geometry, it is not possible to manufacture friction rings or synchronizing rings in a simple and cost-effective deep-drawing process
Method used
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[0068] As already mentioned, Figure 1 to Figure 3b The prior art is shown and explained in detail at the beginning such that any further discussion may not be considered necessary.
[0069] Figure 4a A first embodiment of the synchronization unit according to the invention is shown in a perspective view, which is identified hereinafter as a whole by the reference number 1 . Figure 4a to Figure 5d The reference numbers used in have no primes because these figures refer to embodiments of the invention. As already mentioned above, only Figure 1 to Figure 3b The reference numbers used in have primes because they refer to embodiments known from the prior art.
[0070] The synchronizing unit 1 comprises, in a manner known per se, a conical friction ring 2 and a conical synchronizing ring 3 , which are connected to each other in an interlocking manner. The friction ring 2 has a conical outer mounting surface 402 and the synchronizing ring 3 has a conical inner mounting surface ...
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The invention relates to a synchronization unit of a switchable gear changing transmission, and concretely relates to a synchronization unit of a switchable gear changing transmission for a vehicle. The synchronization unit includes a friction ring having an outer installation surface and a synchronizer ring having an inner installation surface. The outer installation surface of the friction ring is shaped as a first geometrically structured profile extending in the circumferential direction of the axis of synchronization unit. The inner installation surface of the synchronizer ring is shaped as a corresponding second geometrically structured profile extending in the circumferential direction. In an installing state, the first profile of the friction ring is configured to engage with the second profile of the synchronizer ring in such a manner that the friction ring is secured in the radial direction to the axis and in the circumferential direction at the synchronizer ring. To further improve the synchronization unit, the first profile and the second profile are both shaped as curve traces that are segmented in the circumferential direction, the curve traces comprise multiple formed segments directly adjacent to each other, and the segmented curve traces with the formed segments form continuous enclosed surfaces on the at least a part of the circumference.
Description
technical field [0001] The invention relates to a synchronization unit for a switchable gear changing transmission of a vehicle according to the preamble of independent claim 1 . The invention also relates to a friction ring for a synchronization unit according to the preamble of claim 10 and a synchronization ring for a synchronization unit according to the preamble of independent claim 13 . Background technique [0002] In a mechanically switchable shift transmission (for example, in a vehicle transmission), a synchronization unit is used to synchronize the relative speed occurring between a gear and a gear shaft during a shift to another gear. In this respect, synchronization is achieved through friction between corresponding friction partners. The functioning of such transmissions and the synchronization process are known per se and need not be explained in more detail to a person skilled in the art. [0003] In order to prevent premature wear and / or improve the fricti...
Claims
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IPC IPC(8): F16D23/04
CPCF16D23/025F16D23/04F16D2300/10F16D2200/0021F16D2200/0026
Inventor M.斯普雷克斯R.比斯塞克
Owner OERLIKON FRICTION SYST GERMANY