{
  "$type": "site.standard.document",
  "description": "A wheel hub drive unit in which a housing (500) arranged in the wheel hub (110) forms a sealed electric machine chamber equipped with an electric drive motor (200), a sealed reduction gear chamber equipped with a reduction gear (400), and a brake chamber connected to the external environment and…",
  "path": "/patents/920445",
  "publishedAt": "2017-10-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K7/00",
    "SCHAEFFLER TECHNOLOGIES AG [DE]"
  ],
  "textContent": "A wheel hub drive unit in which a housing (500) arranged in the wheel hub (110) forms a sealed electric machine chamber equipped with an electric drive motor (200), a sealed reduction gear chamber equipped with a reduction gear (400), and a brake chamber connected to the external environment and equipped with a brake (300), wherein the reduction gear chamber and the brake chamber are distributed along an axial direction extending away from a wheel hub mounting surface; the electric machine chamber comprises a base body (Q1) arranged close to the inner circumferential surface of the wheel hub and a passage (Q2) extending in the direction of the central axis of the wheel hub; the output end of the electric drive motor is guided through the passage and subsequently extended out of the electric machine chamber and simultaneously connected to the input end of the reduction gear and the output end of the brake, and the output end of the reduction gear is connected to the wheel hub; and the housing (500) seals the electric machine chamber at the position arranged close to the radial inner end of the passage toward the rotor holder with a sealing part. The reduction gear (400) can simultaneously amplify both the drive torque and the brake torque and reduces the dynamic requirements on the electric drive motor and the brake; and the further approximation of the sealing part to the central axis of the wheel hub reduces its wear rate.",
  "title": "WHEEL HUB DRIVE ASSEMBLY"
}