{
  "$type": "site.standard.document",
  "description": "An in-wheel motor drive assembly is provided of which a reduction mechanism and a bearing supporting a rotor shaft can be reliably lubricated with oil. The assembly includes a motor case (10) defining a motor chamber (17) and a reduction mechanism chamber (18) provided on one side of and isolated…",
  "path": "/patents/971656",
  "publishedAt": "2014-08-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K17/046",
    "NTN TOYO BEARING CO LTD [JP]"
  ],
  "textContent": "An in-wheel motor drive assembly is provided of which a reduction mechanism and a bearing supporting a rotor shaft can be reliably lubricated with oil. The assembly includes a motor case (10) defining a motor chamber (17) and a reduction mechanism chamber (18) provided on one side of and isolated from the motor chamber by a partition wall (16). An electric motor (30) is mounted in the motor chamber (17). A planetary gear type reduction mechanism (40) is mounted in the reduction mechanism chamber (18), and is adapted to reduce the rotation of the electric motor (30) and output the reduced rotation to a hub ring (65). The reduction mechanism (40) is lubricated by lubricating oil stored in the reduction mechanism chamber (18). A tapered oil guide surface (21) is formed at the center of the inner surface of the partition wall (16) facing the reduction mechanism chamber (18). The oil guide surface (21) guides lubricating oil splashed up by the rotating reduction mechanism and flowing down along the inner surface of the partition wall (16), onto the rotor shaft (34) of the electric motor (30), thereby lubricating bearings (47) mounted on the rotor shaft (34).",
  "title": "IN-WHEEL MOTOR DRIVE DEVICE"
}