Plug door device

Patent metadata

Field	Value
Publication number	US-9403422-B2
Application number	US-201214004091-A
Country	US
Kind code	B2
Filing date	Mar 7, 2012
Priority date	Mar 10, 2011
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

Provided is a small plug door device capable of performing an opening/closing operation and a plugging operation with a door drive mechanism for causing a force in a vehicle front-rear direction to act on a door, and further applicable also to a one-panel sliding door. A slide base 12 is installed slidably in a vehicle width direction relative to a fixed base 11 . A door drive mechanism 13 for moving one door 104 in a vehicle front-rear direction via a connecting portion 19 has a drive portion 13 a including an electric motor 21 , a drive wheel member 13 b , a follower wheel member 13 c , and an endless member 13 d , and is installed on the slide base 12 . A guide portion 15 guides a shaft portion 14 provided on the connecting portion 19 so as to move the shaft portion 14 in a vehicle width direction. In a double-speed rail 16 in which a pinion 16 c is disposed between two racks ( 16 a , 16 b ), one rack 16 b is connected to the slide base 12 , the other rack 16 a is connected to the door 104 side, and the pinion 16 c is connected to the connecting portion 19.

First claim

The invention claimed is:

1. A plug door device comprising:
a slide base installed on a fixed base that is fixed to a body of a vehicle, slidably in a vehicle width direction perpendicular to a vehicle length direction;
a door drive mechanism that is installed on the slide base and has a drive portion including an electric motor, a drive wheel member to which a driving force from the drive portion is input, at least one follower wheel member provided in association with the drive wheel member, and an endless member that is looped around the drive wheel member and the follower wheel member so as to circle therearound, the door drive mechanism being installed on the slide base within an opening range of an entrance of the vehicle and in a range from a front end portion of an entrance of the vehicle to a rear end portion on the entrance of the vehicle as viewed in the vehicle width direction and performing an opening and closing operation for the door along the vehicle length direction, and wherein at least part of the driving force from the drive portion is used to move the slide base and door drive mechanism in a plugging operation of moving the door in a vehicle width direction.

2. The plug door device according to claim 1 ,
further comprising a locking mechanism capable of locking the door so as to restrict a movement of the door at a closed position of the door,
wherein the drive portion has the electric motor and a planet gear mechanism including a sun gear, planet gears that mesh with the sun gear and revolves around the sun gear while rotating, a carrier that rotatably supports the planet gears and revolvably supports the planet gears, and a ring gear that meshes with the planet gears, a driving force from the electric motor being input to the planet gear mechanism, and
the driving force from the electric motor is input to any one of the sun gear, the carrier, and the ring gear, a driving force that is output from any one of the sun gear, the carrier, and the ring gear is input to the drive wheel member, and a driving force that is output from the remaining one of the sun gear, the carrier, and the ring gear is input to the locking mechanism.

3. The plug door device according to claim 2 ,
wherein the locking mechanism includes:
a fixed lock portion provided so as to be fixed on the fixed base; and
a movable lock portion that is provided movably with the driving force that is output from the planet gear mechanism to the locking mechanism, and comes into contact with the fixed lock portion on an inside in the vehicle width direction at the closed position of the door,
a movement of the door outward in the vehicle width direction is restricted when the door is at the closed position.

4. The plug door device according to claim 3 ,
wherein the movable lock portion includes:
a sliding contact portion capable of coming into contact with the fixed lock portion;
a slide rail that is fixed to the slide base and restricts a sliding direction of the sliding contact portion; and
a transmission member that transmits a driving force that is output from the planet gear mechanism to the locking mechanism to the sliding contact portion.

5. The plug door device according to claim 4 ,
wherein the sliding contact portion includes:
a slide block provided in a form of a block, a sliding direction of the slide block being restricted by the slide rail; and
a roller supported rotatably relative to the slide block and capable of coming into contact with the fixed lock portion.

6. The plug door device according to claim 3 ,
wherein the fixed lock portion is provided with:
a first face that is formed as a face orthogonal to the vehicle width direction and restricts a movement of the door outward in the vehicle width direction by coming into contact with the movable lock portion when the door is at the closed position; and
a second face that is formed as a face orthogonal to a vehicle front-rear direction and capable of coming into contact with the movable lock portion, and generates a reaction force balanced with a driving force that is input from the planet gear mechanism to the locking mechanism such that the drive wheel member is driven to rotate with a driving force that is input from the planet gear mechanism to the drive wheel member.

7. The plug door device according to claim 3 ,
wherein the drive portion and the drive wheel member are disposed at a central part in a vehicle front-rear direction of the slide base, and
a plurality of follower wheel members are provided and are disposed on both sides in a vehicle front-rear direction of the drive wheel member.

8. The plug door device according to claim 1 , wherein the vehicle length direction corresponds to a forward and backward moving direction of the vehicle.

9. A plug door device to be installed at an entrance of a vehicle for performing an operation of opening and closing a door and a plugging operation of moving the door in a vehicle width direction, comprising:
a fixed base that is fixed to a body of the vehicle;
a slide base installed on the fixed base slidably relative to the fixed base in the vehicle width direction;
a door drive mechanism that is installed on the slide base and moves the door in a vehicle front-rear direction via a connecting portion;
a shaft portion provided on the door or the connecting portion;
a guide portion that is rotatably installed on the fixed base, pivots while abutting the shaft portion and guides the shaft portion such that the shaft portion moves toward one side in the vehicle width direction when the door opens, and pivots while abutting the shaft portion and guides the shaft portion such that the shaft portion moves toward another side in the vehicle width direction when the door closes;
a double-speed rail that has two facing racks and a pinion disposed between the two racks, the two racks being installed so as to extend in the vehicle front-rear direction, one of the two racks being connected to the slide base and the other one thereof being connected to the door, and the pinion being connected to the connecting portion; and
a locking mechanism capable of locking the door so as to restrict a movement of the door at a closed position of the door,
wherein the locking mechanism include:
a fixed lock portion provided so as to be fixed on the fixed base; and
a movable lock portion that is provided movably with the driving force that is output from the door drive mechanism to the locking mechanism, and comes into contact with the fixed lock portion on an inside in the vehicle width direction at the closed position of the door,
a movement of the door outward in the vehicle width direction is restricted when the door is at the closed position.

10. The plug door device according to claim 9 ,
wherein the movable lock portion includes:
a sliding contact portion capable of coming into contact with the fixed lock portion;
a slide rail that is fixed to the slide base and restricts a sliding direction of the sliding contact portion; and
a transmission member that transmits a driving force that is output from the door drive mechanism to the locking mechanism to the sliding contact portion.

11. The plug door device according to claim 10 ,
wherein the sliding contact portion includes:
a slide block provided in a form of a block, a sliding direction of the slide block being restricted by the slide rail; and
a roller supported rotatably relative to the slide block and capable of coming into contact with the fixed lock portion.

12. The plug door device according to claim 9 ,
wherein the door drive mechanism has a drive portion including an electric motor, and a rack

Assignees

• Takahashi Kazutama
• Yamaguchi Atsuhito
• Nabtesco Corp

Inventors

• Takahashi Kazutama
• Yamaguchi Atsuhito

Classifications

• E05Y2900/51

  for railway cars or mass transit vehicles · CPC title

• B61D19/02

  for carriages (B61D19/003 takes precedence) · CPC title

• B61D19/009

  both sliding and plugging, (e.g. for refrigerator cars) · CPC title

• E05B83/363

  for railway vehicles (E05B77/54 takes precedence) · CPC title

• E05Y2201/652

  Belts · CPC title