{
  "$type": "site.standard.document",
  "description": "The present invention provides a wheel (12) suitable for a saddle-ride type electric vehicle, in which, while torque necessary for driving is obtained, both a mechanical loss and an energy loss are reduced and an increased travel distance is obtained from a battery, without losing the productivity…",
  "path": "/patents/990530",
  "publishedAt": "2013-05-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B62M6/65",
    "YAMAHA MOTOR CO LTD [JP]"
  ],
  "textContent": "The present invention provides a wheel (12) suitable for a saddle-ride type electric vehicle, in which, while torque necessary for driving is obtained, both a mechanical loss and an energy loss are reduced and an increased travel distance is obtained from a battery, without losing the productivity. A wheel (12) for a saddle-ride type electric vehicle includes: a rim part (12d) that supports a tire; a hub part (12h) arranged inside the rim part (12d) with respect to a radial direction of the wheel (12) and configured to rotate on a rotational axis (C) of the wheel (12); a spoke part (12g) connecting the rim part (12d) to the hub part (12h); a stator core (52) and a coil (51) provided around the rotational axis (C) of the wheel (12) and arranged inside a spoke connection portion (12r) of the hub part (12h) with respect to the radial direction of the wheel (12), the spoke connection portion (12r) being a portion to which the spoke part (12g) is connected; a ferrite magnet (41) arranged inside the spoke connection portion (12r) of the hub part (12h) and outside the stator core (52) with respect to the radial direction of the wheel (12), the ferrite magnet (41) being opposed to the stator core (52) and configured to rotate together with the hub part (12h), the spoke part (12g), and the rim part (12d) on the rotational axis (C) of the wheel (12); and a back yoke part (40) arranged inside the spoke connection portion (12r) of the hub part (12h) and outside the ferrite magnet (41) with respect to the radial direction of the wheel (12), the back yoke part (40) supporting the ferrite magnet (41).",
  "title": "Wheel for a saddle-ride type electric vehicle, wheel-driving electric motor for a saddle-ride type electric vehicle, and saddle-ride type electric vehicle"
}