{
  "$type": "site.standard.document",
  "description": "The two-speed transmission apparatus for an electric vehicle comprises a planetary gear mechanism 16, a friction brake 28 and a friction clutch 26 in a coaxial arrangement between an input axis 10 and an output axis 12, the first speed is obtained by fastening the friction brake 28 and one-on-one…",
  "path": "/patents/1394976",
  "publishedAt": "2026-03-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K1/00",
    "UNIPRES CORP [JP]"
  ],
  "textContent": "The two-speed transmission apparatus for an electric vehicle comprises a planetary gear mechanism 16, a friction brake 28 and a friction clutch 26 in a coaxial arrangement between an input axis 10 and an output axis 12, the first speed is obtained by fastening the friction brake 28 and one-on-one the second speed is obtained by fastening the friction clutch 26. The electric actuator 30 to switch the first speed and the second speed comprises an electric motor 32, a torque-thrust converting mechanism 36 and a pusher 34. The torque-thrust converting mechanism 36 comprises an inside cylindrical screw 40 being rotated by the control motor 32 and an outside cylindrical nut 42 which is screwed with the cylindrical screw 40 and is connected to the pusher 34 so as to integrally axis-move. The control motor 32 may include an electromagnetic brake to fasten the friction brake 28 and the friction clutch 26. The thrust of the axial direction may be transmitted by the swing of an arm 316.",
  "title": "TWO-STEP TRANSMISSION FOR ELECTRIC AUTOMOBILE"
}