{
  "$type": "site.standard.document",
  "description": "The two-speed transmission apparatus for an electric vehicle comprises a planetary gear mechanism , a friction brake and a friction clutch in a coaxial arrangement between an input axis and an output axis , the first speed is obtained by fastening the friction brake and one-on-one the second speed…",
  "path": "/patents/1357663",
  "publishedAt": "2024-01-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F16H63/3043",
    "UNIPRES CORPORATION"
  ],
  "textContent": "The two-speed transmission apparatus for an electric vehicle comprises a planetary gear mechanism , a friction brake and a friction clutch in a coaxial arrangement between an input axis and an output axis , the first speed is obtained by fastening the friction brake and one-on-one the second speed is obtained by fastening the friction clutch . The electric actuator to switch the first speed and the second speed comprises an electric motor , a torque-thrust converting mechanism and a pusher . The torque-thrust converting mechanism comprises an inside cylindrical screw being rotated by the control motor and an outside cylindrical nut which is screwed with the cylindrical screw and is connected to the pusher so as to integrally axis-move. The control motor may include an electromagnetic brake to fasten the friction brake and the friction clutch . The thrust of the axial direction may be transmitted by the swing of an arm",
  "title": "TWO-SPEED TRANSMISSION APPARATUS FOR ELECTRIC VEHICLE"
}