Plug door device

Patent metadata

Field	Value
Publication number	US-10458166-B2
Application number	US-201715475955-A
Country	US
Kind code	B2
Filing date	Mar 31, 2017
Priority date	Apr 1, 2016
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

One object is to provide a plug door device that can make a contribution to a size reduction thereof, while suppressing a decrease in airtightness of a door. A plug door device is provided with an electric motor, a plug operation portion that moves a door in a width direction of a vehicle, a front-back operation portion that moves the door in a front-back direction of the vehicle, a movement suppressing portion that can suppress movement of the door in the front-back direction, and a planetary gear mechanism that distributes a drive force of the electric motor to the plug operation portion when movement of the door in the front-back direction is suppressed by the movement suppressing portion, and distributes a drive force of the electric motor to the front-back operation portion when movement of the door in the front-back direction is not suppressed by the movement suppressing portion.

First claim

What is claimed is:

1. A plug door device, comprising:
a drive source;
a plug operation portion configured to move, based on a drive force of the drive source, a door installed at a doorway of a vehicle in a width direction of the vehicle;
a front-back operation portion configured to move, based on the drive force of the drive source, the door in a front-back direction of the vehicle;
a movement suppressing portion configured to suppress movement of the door in the front-back direction, wherein the movement suppressing portion includes:
a guide rail mounted to the vehicle; and
a shaft member mounted to the door and configured to move along the guide rail, wherein the guide rail includes a first portion extending in the width direction and configured to suppress movement of the shaft member in the front-back direction;

a planetary gear mechanism configured to:
distribute the drive force of the drive source to the plug operation portion in a case where movement of the door in the front-back direction is suppressed by the movement suppressing portion, and
distribute the drive force of the drive source to the front-back operation portion in a case where movement of the door in the front-back direction is not suppressed by the movement suppressing portion;

a fixed base fixed to the vehicle and including the guide rail; and
a slide base movable in the width direction with respect to the fixed base by the plug operation portion, the slide base having the drive source, the front-back operation portion, and the planetary gear mechanism mounted thereto.

2. The plug door device according to claim 1 , wherein during a time when the door moves a predetermined distance in the width direction from a closed position at which the doorway is closed, the movement suppressing portion suppresses movement of the door in the front-back direction, and when the door is at a position to which the door has moved the predetermined distance in the width direction from the closed position, the movement suppressing portion permits movement of the door in the front-back direction.

3. The plug door device according to claim 1 , wherein the plug operation portion includes:
a rack fixed to the vehicle and extending in the width direction of the vehicle; and
a pinion engaged with the rack, the drive force of the drive source being transmitted to the pinion via the planetary gear mechanism.

4. The plug door device according to claim 3 , wherein the planetary gear mechanism includes a sun gear, a plurality of planetary gears, a ring gear, and a carrier, the drive force of the drive source being inputted to the sun gear, the plurality of planetary gears being engaged with the sun gear, the ring gear being disposed around the plurality of planetary gears and engaged with the plurality of planetary gears, the carrier being configured to support the plurality of planetary gears,
rotation of one of the ring gear and the carrier is transmitted to the pinion to cause the door to move in the width direction, and
rotation of the other of the ring gear and the carrier is transmitted to the front-back operation portion to cause the door to move in the front-back direction.

5. The plug door device according to claim 1 , wherein the guide rail includes a second portion extending in the front-back direction continuously with the first portion and configured to permit movement of the shaft member in the front-back direction, while suppressing movement of the shaft member in the width direction.

6. The plug door device according to claim 1 , wherein the plug operation portion includes:
a rack fixed to the vehicle and extending in the width direction of the vehicle; and
a pinion engaged with the rack, the drive force of the drive source being transmitted to the pinion via the planetary gear mechanism,
wherein the rack is mounted to the fixed base.

7. The plug door device according to claim 1 , wherein the front-back operation portion includes:
a pair of pulleys disposed within a width of the doorway in the front-back direction so as to be spaced from each other in the front-back direction; and
a belt wound around the pair of pulleys.

8. The plug door device according to claim 1 , further comprising: a guiding support portion configured to support the slide base and guide movement of the slide base in the width direction with respect to the fixed base,
wherein the guiding support portion is mounted to end portions of the slide base in the front-end direction.

9. The plug door device according to claim 1 , wherein an output shaft of the drive source is disposed coaxially with the planetary gear mechanism.

Assignees

• Nabtesco Corp

Inventors

• Yamaguchi Atsuhito

Classifications

• F16H19/06

  comprising {flexible members, e.g. an} endless flexible member · CPC title

• E05D15/1044 Primary

  specially adapted for use in railway-cars or mass transit vehicles · CPC title

• E05F5/003

  for sliding wings (Fasteners specially adapted for holding sliding wings open E05D13/04) · CPC title

• F16H19/04

  comprising a rack · CPC title

• E05B83/06

  of railway freight-cars · CPC title