192 clutches and power-stop control – Transmission and brake – Motor vehicle
Patent
1999-01-28
2000-10-24
Herrmann, Allan D.
192 clutches and power-stop control
Transmission and brake
Motor vehicle
180307, 475 83, 475331, B60K 4126
Patent
active
061352594
ABSTRACT:
A hub drive is provided with a hub which is mounted on a hub support and with a brake device. The hub can be driven by a drive shaft with the interposition of a transmission preferably realized in the form of a planetary gear train. To be able to use the brake device of the hub drive, which has compact dimensions, both as a service brake and as a holding brake, each with good performance characteristics, the invention teaches that the brake device has a first and a second brake. The first brake is used to couple the drive shaft with the hub support with the interposition of the planetary gear train, and is used as a service brake. The second brake can be used to couple the hub and thus the web of the planetary gear train to the hub support, as a result of which it can be used as a holding brake. To save space, the first brake is located radially inside the second brake. The two brakes, which are preferably realized in the form of multi-disc brakes, have a common brake stator support, which is provided with a hollow cylindrical axial web. The brake discs of the first brake are located radially inside the axial web, and the brake discs of the second brake are located radially outside the axial web. As a result of the radial webs which are molded onto the axial web or are otherwise connected to it, and are realized so that they can absorb the braking forces that are exerted in the axial direction, there is a closed power flux in the brake stator.
REFERENCES:
patent: 3754625 (1973-08-01), Voth et al.
patent: 4010830 (1977-03-01), Logus et al.
patent: 4407382 (1983-10-01), Dziuba et al.
patent: 5398776 (1995-03-01), Forster
Herrmann Allan D.
Linde Aktiengesellschaft
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