Mechanical automotive vacuum pump with cantilevered rotor
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United States of America Patent
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Apr 14, 2020
Grant Date -
Jun 28, 2018
app pub date -
Jun 24, 2015
filing date -
Jun 24, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vacuum pump includes a pump rotor comprising a rotor body, a housing arrangement, a slidable pump vane, and a backing support cone structure. The rotor body comprises a vane slit, a conical ring, a coupling-sided end portion, and a vane-sided end portion. The housing arrangement comprises a static conical ring corresponding to the conical ring. The slidable pump vane is supported in the vane slit. The backing support cone structure is arranged at a front end of the vane-sided end portion and is defined by the conical ring of the rotor body and the static conical ring of the housing arrangement. A coupling structure and a single radial bearing are each arranged at the coupling-sided end portion of the rotor body and a radial bearing is not arranged at the vane-sided end portion of the rotor body so that the rotor body is radially supported cantilevered.
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