| 摘要 |
Transmission unit for motor vehicles of the type containing a continuous variable transmission (2) consisting of an ingoing shaft (3), a driven shaft (4), two pulleys (5-6) situated on the ingoing shaft (3) and the driven shaft (4) respectively, and an endless transmission element (7) provided between said pulleys (5-6), whereby the above-mentioned pulleys (5-6) each consist of two pulley halves (8-9, 10-11) with conical contact surfaces (12) which can be axially adjusted in relation to one another, such that the transmission ratio between the ingoing shaft (3) and the driven shaft (4) can be continuously altered, whereby the transmission element (7) consists of a lubricated belt which is provided with metal parts (13) having contact surfaces (14) which work in conjunction with the above-mentioned conical contact surfaces (12) of the pulley halves (8-9, 10-11), and whereby the contact surfaces (14) of the parts (13) have a profiling (17), in particular a profiling (17) procuring a thin-film lubrication, wherein the conical contact surfaces (12) of the pulley halves (8-9, 10-11) concerned are polished.
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