JP2594529B2 - Plug door device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug door device which pushes a door provided at a doorway of a vehicle body such as a railway vehicle toward a vehicle body and opens and closes the door along a side surface of the vehicle body.

[0002]

2. Description of the Related Art A plug door device of this type is known from British Patent No. 148,981.
To open and close the door along the side of the vehicle body, an upper rail is provided above the elevator, and a door rail is provided below the elevator, along the side of the vehicle from the side of the door in parallel with this door rail. Tojiri rails are provided. And in order to push the door toward the vehicle body, the upper rail and the door rail are inclinedly arranged such that the door bottom side approaches the door opening side toward the door top side,
The door end side of the door butt rail has a curved portion facing the elevator. The upper part of the door end is engaged with the upper rail via a connecting portion such as a slide member, the lower part of the door end is engaged with the door rail via a guide such as a roller, and the door end side is engaged with the door end rail. The lower part is engaged via a guide such as a roller. In order to open and close the door, the connecting portion is connected to a driving portion such as a door engine.

In the plug door device having such a structure, in the final step of closing the door from the side of the vehicle body to the doorway, the door guided by the upper rail, the door rail and the door end rail is pushed out to the vehicle body side, and the sealing is performed. It is structured to be in close contact with the entrance via the member. Therefore, it is generally known as a door device that does not require a door pocket and has good airtightness.

However, the above-described plug door apparatus has only three rails, and has a structure in which the door is supported at three points: an upper part of the door, a lower part of the door, and a lower part of the door. For this reason, the door rattles due to wind pressure during traveling or the like, and the airtightness at the upper part of the door end is easily damaged. Therefore, in the plug door device disclosed in the above-mentioned British Patent No. 1482981, a catch device as shown in FIG. 11 is provided on the upper side of the door end to prevent backlash. This catch device is a door 1
A roller 103 is provided on the upper side of the door end of the vehicle body 01 via a plate 102, and a funnel-shaped catcher 107 provided via a bracket 106 at an entrance / exit edge 105 of a vehicle body 104. In the final step of closing the door, the door bottom side of the door 101 is pushed out toward the vehicle body 104 as indicated by an arrow j, so that the roller 103 is received by the catcher 107 and locked.

[0005]

However, if the wind pressure on the side of the vehicle body increases due to recent high-speed running of vehicles, for example, when passing through a tunnel or passing a train, the conventional catch device as described above uses a roller. Due to the presence of the gap between 103 and catcher 107, it is not possible to prevent the door from vibrating in a high-pressure state or maintain airtightness. In other words, there is a problem that noise and draft in the high speed traveling cannot be ignored.
Therefore, it is conceivable to use a retractor when the door is closed,
There is also a problem that the drawing-in device becomes large and a large installation space is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to increase the airtightness by using a retracting device when a door is closed and to reduce the installation space of the retracting device. It is to provide a plug door device which has been developed.

[0007]

In order to achieve the above object, a plug door device of the present invention is a plug door device that pushes a door provided at an entrance / exit of a vehicle body to a vehicle body side and opens and closes along a side surface of the vehicle body. There is an upper rail provided above the entrance, a door rail provided below and a door bottom rail extending in parallel with the door rail from the door bottom side of the door to the side of the vehicle body, The upper rail is engaged with the upper part of the door via the connecting part, and the door rail and the door bottom rail are engaged with the lower part of the door and the upper part of the door via the guide. In the plug door device in which the connecting portion is connected to the driving portion, the upper and lower portions of the door and the lower portion of the door end are guided and supported to open and close the door. With two pins,
At the entrance edge facing the upper and lower sides of the door end side, there is provided a retracting device which engages with these pins when the door is closed and retracts the door into the inside of the vehicle. A retractable cam having a first pawl for starting the retractable cylinder by contacting the retractable cylinder, and a second pawl for retracting the pin into the vehicle by operating the retractable cylinder, wherein the pin is a horizontal surface in a final step of closing the door. An oblique projection is provided at the end of the door end so as to be substantially perpendicular to the inner locus, and the retracting cam is provided at the entrance edge so as to be obliquely rotatable so as to be substantially parallel to the locus in the horizontal plane. It is what is being done.

[0008]

In the final step of closing the door, the door is pushed out to the vehicle body side, and the pin provided at the upper part of the door end approaches the retracting device provided at the opposite entrance edge of the upper part of the door side. Then, the first claw of the retraction cam of the retraction device abuts on the pin on the door side, and the retraction cam rotates to operate the retraction cylinder.
The retracting cylinder further rotates the retracting cam, and the second pawl on the retracting cam strongly retracts the pin on the door side. as a result,
The upper part of the door is supported in a state where it is retracted into the vehicle body side, and the four corners of the door are joined together with the connecting part on the upper part of the door, the lower part of the door, and the lower part of the door. Support it in the state pushed out to the entrance. This retraction cam is provided at the entrance / exit edge so as to be obliquely rotatable so as to be substantially parallel to the trajectory in the horizontal plane in the final step of closing the door, and the cross section is effective at the entrance / exit edge of a square space. Fits in.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the plug door device of the present invention, and FIG. 2 is a side view of the plug door device of the present invention. First, the entire plug door will be described with reference to FIGS. 1 and 2, and then the details of the door-side retracting device will be described.

In FIG. 1, 1 is a vehicle body, 2 is a doorway, 3
a, 3b are double doors, 4a, 4b are upper rails, 5a,
5b is a door rail, 6a and 6b are door butt rails, 7a and 7
b is a connecting portion, 8a and 8b are door guides, 9a and 9b are door butt guides, 10 is a drive unit, 11a and 11b are lower draw-in devices on the door butt side, and 12a and 12b are upper draw-in devices on the door butt side. Device.

The drive section 10 has a structure in which the tip of the door engine 20 is connected to the connecting section 7b and the upper rack 21, and the lower rack 22 connected to the connecting section 7a meshes with the pinion 23 and also meshes with the upper rack 21. . Door engine 2
When 0 is extended, the door 3b connected to the connecting portion 7b opens to the left in the drawing, and at the same time, the pinion 2 meshes with the upper rack 21.
3 rotates, the lower rack 22 meshing with the pinion 23 runs so as to pass by the upper rack 21, and the door 3a opens rightward in the drawing via the connecting portion 7a.

The doors 3a and 3b shown in FIG. 1 are engaged with the upper rails 4a and 4b at the connecting portions 7a and 7b on the upper side of the door, and the door rails 5a and 5b by the guides 8a and 8b on the lower side of the door. , And the door bottom rail 6
a, 6b from the closed position to close the entrance 2 by the door engine 10 connected to the connecting portions 7a, 7b.
Open and close between the open position located on the side of the. As clearly shown in FIG. 2, the doors 3a and 3b in the closed position are pushed into the side of the vehicle body 1, but the doors 3 in the open position as indicated by a two-dot chain line.
a and 3b protrude from the vehicle body 1 and are located on the side surfaces of the vehicle body 1.

Next, the door rails 5a and 5b for pushing the door to the vehicle body in the final step of closing the door and the guides 8a and 8b thereof and the door butt rails 6a and 6b and the structures of the guides 9a and 9b are shown in FIGS. 5 will be described. In FIG. 3, the door rails 5a and 5b are provided at positions corresponding to the entrances 2 of the vehicle body 1, are entirely linear, and have an inclination angle α in which the door side enters the vehicle body 1. I have. The door butt rails 6a and 6b are provided so as to extend from the door butt side of the door 3 to the side surface of the vehicle body 1, and have linear portions 6aa and 6ba and curved portions 6ab and 6bb. That is, the doors of the doors 3a and 3b are gradually pushed into the vehicle body 1 along the door rails 5a and 5b.
The door end side of the doors 3a and 3b is the door end rail 6 in the final process of closing the door.
It is quickly pushed along the curved portions 6ab, 6bb of the a, 6b.

In FIG. 4, door rails 5a and 5b are
The lower frame 30 of the vehicle body 1 is fixed so as to be accommodated in a horizontal recess formed by the lower frame 30 and has a guide groove 31. The door-side guides 8a and 8b are configured such that a roller 34 is rotatably supported at the tip of a laterally protruding portion 33 with respect to the doors 3a and 3b. The roller 34 enters the guide groove 31 and is guided and regulated in the horizontal direction of the drawing.

In FIG. 5, the door bottom rails 6a and 6b are
The lower frame 36 of the vehicle body 1 is fixedly provided so as to be accommodated in a lateral recess formed by the lower frame 36, and has a lower guide concave groove 37 and an upper guide inclined surface 38. Doorside guides 9a and 9b
An upper roller 40 and a lower roller 41 are rotatably supported at the tip of a bracket 32 fixed to the lower end of the door 3. The upper roller 40 is guided with its conical portion abutting on the upper guide inclined surface 38 in the vertical direction in the drawing. The lower roller 41 enters the lower guide groove 37 and is regulated and guided in the left-right direction in the drawing.

Next, the structure of the upper rail 4 and the connecting portion 9 will be described with reference to FIG. The upper rails 4a and 4b are slide rails, and are provided with an inclination angle α at which the door end side enters the vehicle body 1, similarly to the door end rails 5a and 5b in FIG. As shown in FIG. 2, the connecting portions 7a and 7b are connected to a slide member 48 running along the upper rails 4a and 4b via a spherical bearing 47.

Next, the opening and closing operation of the plug door device having the above-described structure will be described with reference to FIG. When the door engine 20 extends leftward in the drawing, the door 3b connected by the connecting portion 7b
Moves to the left in the drawing, and the door 3a connected to the lower rack 22 by the upper rack 21, the pinion 23 and the lower rack 22.
Moves rightward in the drawing. In addition, the guide 8 at the lower part of the door side
a, 8b are guided along the door end rails 5a, 5b, and the guides 9a, 9b at the lower part of the door end are also guided along the door end rails 6a, 6b. As shown in FIG.
b has curved portions 6ab and 6bb, and the doors 3a and 3b
Is pushed out to the side opposite to the vehicle body 1 in the initial stage of door opening. Since the door rails 5a and 5b in FIG. 3 and the upper rails 4a and 4b in FIG. 6 are inclined at an angle α, they are gradually pushed out to the opposite side of the vehicle body 1 in all steps of the door opening operation, and finally the vehicle body It is the position of the two-dot chain line as shown in FIG. 2 along the side of 1.

As shown in FIGS. 4 and 5, the guides 8a and 8b on the lower side of the door and the guide 9 on the lower side of the door end.
The play of the door 3 in the left-right direction in the drawing is regulated by the guide groove 31 and the roller 34 and the lower guide groove 37 and the lower roller 41 in FIGS. Further, the contact between the upper guide inclined surface 38 and the conical portion of the upper roller 40 restricts the downward movement of the doors 3a and 3b due to their own weight. Due to these restrictions, the doors 3a and 3b open and close smoothly without play.

By the way, the doors 3a and 3b in FIG. 1 are provided with connecting portions 7a and 7b on the upper side of the door and guides 8a and 8 on the lower side of the door.
b and the guides 9a and 9b at the lower part of the door bottom side, there is a possibility that play will occur at the free upper part of the door bottom side. Therefore, the retracting devices 11a, 12
a, 11b, and 12b are provided. The structure and operation of the upper retracting device 11a will be described with reference to FIGS.

FIG. 7A is a sectional view taken along the line XX of FIG.
FIG. 8B is a view in the direction of the arrow Z in FIG. FIG. 8 is an operation diagram showing the same cross section as FIG. 7 and showing a state after being retracted. 7A and 7B, the lower retracting device 11a mainly includes a base 55, a rotary shaft 56, a retracting cam 57, a switching valve 59, a retracting cylinder 61, and a lock cylinder 60. Is fixed to the side of the frame at the edge of the entrance 2 of the vehicle. Further, a dent 62 opened at a position opposite to the retracting cam 57 on the door bottom side of the door 3a.
Are formed, and a pin 63 is provided obliquely from the recess 62. The projecting direction of the pin 63 is an oblique direction substantially perpendicular to the trajectory B of the final step of closing the door 3a.

The rotating shaft 56 projects obliquely with respect to the base 55 and is substantially parallel to the pin 63 when the door is closed. The retracting cam 57 is fitted and fixed to the rotating shaft 56, and the retracting cam 57 is arranged substantially in parallel with the final stage of the trajectory B, and is efficiently stored in the diagonal direction within the square frame at the entrance / exit edge. I have. The retraction cam 57 has a timing cam portion 58, and the tip roller 59 b of the lever 59 a of the switching valve 59 is urged against the timing cam portion 58 in a contact state. When the leading end roller 59b moves from the small diameter portion 58a of the timing cam portion 58 to the large diameter portion 58b, the lever 59a is lowered, the switching valve 59 is switched, and the retracting cylinder 61 is shortened.

The retracting cam 57 includes a first claw 57a and a second claw 57a.
It has a claw 57b, and the opposite side of the claw 57a, 57b is pin-connected to the tip of the rod 61a of the retracting cylinder 61. In the final step of closing the door, the tip of the door end is curved and moved as shown by trajectory A.
The pin 63 of the door 3a also bends and moves like a locus B, and the second claw 5
The first claw 57a longer than 7b first hits the pin 63.
The tip of the second claw 57b has a hook shape bent clockwise in the circumferential direction of the rotating shaft 56, and when the retracting cylinder 61 urges the retracting cam 57 to rotate clockwise, the pin 6 as shown in FIG.
3 is pulled into the body 1 side.

The retractable cylinder 61 has a built-in spring in the cylinder side chamber. When the rod side chamber is in communication with the atmosphere, the rod 61a is extended by the spring, and the retractable cam 57 is released from the state shown in FIG. State. When the pressure air is supplied to the rod side chamber by the switching valve 59, the rod 61a
Is retracted, and the retracting cam 57 is brought into the operating state shown in FIG.

The lower retracting device 11b shown in FIG. 7 is provided with a lock device comprising a lock cylinder 60 and a concave portion 57c of the retracting cam 57. As shown in FIG. 8, when the retracting cam 57 retracts the pin 63, the concave portion 57c is located at a position facing the lock syringe 60. When the rod tip 60a of the lock cylinder 60 advances, it is caught on the end of the concave portion 57c. The switching of the operation of the lock cylinder 60 is performed by sharing the switching valve 59 of FIG.

Next, the operation of the lower retracting device 11a will be described. In the door open state of FIG. 7A, the rod-side chamber of the retraction cylinder 61 communicates with the atmosphere, and the rod 61a is extended by a spring (not shown). In the final step of closing the door 3a, when the pin 63 contacts the first claw 57a of the retraction cam 57 as shown in FIG. 7B, the retraction cam 57 rotates clockwise. Then, the lever 59a is lowered by the tamping cam portion 58 of the retraction cam 57, and the switching valve 59
Is switched, and pressurized air is supplied to the rod side chamber of the drawing cylinder 61. Then, as shown in FIG. 8, the retracting lever 57 rotates to the illustrated operating position, the second pawl 57b pulls the pin 63 strongly toward the vehicle body 1, and seals the door end side to the vehicle body 1.
At the same time, the distal end 60a of the lock cylinder 60 advances and finally enters the recess 57c while hitting the retracting cam 57, and locks the retracted state of the retracting cam 57. When the door 3a shown in FIG. 8 is opened, the opening force of the door 3a exceeds the force of the retracting cylinder 61, and the retracting cam 57 rotates counterclockwise. Eventually, the switching valve 59 in FIG. 7B is switched, the rod-side chamber of the retracting cylinder 61 communicates with the atmosphere, the rod 61a is extended by a spring built in the cylinder-side chamber, and the retracting cam 57 is released. Return to the state. At the same time, the cylinder side chamber of the lock cylinder 60 communicates with the atmosphere, and the tip 6 is moved by a spring (not shown) built in the rod side chamber.
0a retreats to the retreat position.

The lower retracting device 11a for the door 3a shown in FIG.
In addition, an upper retracting device 12a is provided, and a lower retracting device 11b and an upper retracting device 12b are provided on the door 3b of FIG. These retracting devices 12a, 11b, 12b will be described with reference to FIG. The switching of the retracting cylinder 61 is performed by sharing the switching valve 59 of FIG. 7, so that the switching valve 59 is simply a pedestal 55a. In addition, retraction cam 5
Locking of the recess 57c of FIG. 7 by the stopper cylinder is performed by the retracting cam 57 of FIG. 7 as a representative, and therefore no stopper cylinder is provided for the retracting cam 57 of FIG. Other structures and operations are the same as those in FIG.

The retracting device 1 is provided at the door bottom side of the doors 3a and 3b in FIG.
Providing 2a, 12b, 11a, and 11b provides three-point support in addition to the connecting portions 7a and 7b on the upper side of the door, the guides 8a and 8b on the lower side of the door, and the guides 9a and 9b on the lower side of the door. , 5
Because it is point-supported, the door 3
a, 3b does not rattle.

Next, an air circuit diagram for the door engine 20 and the retracting device described above will be described with reference to FIG. 70
Is an upper unit provided above the entrance, 68 is a door 3a
Reference numeral 69 denotes a retracting unit on the side of the door 3b. Further, a door cock 71 and an air source 73 are provided at appropriate places on the vehicle body.

The passage 74 from the door cock 71 enters the upper unit 70, and is connected to the door engine 20 via the filter 75 and the door opening solenoid valve 76. Also, the compressed air is supplied to the drawing device unit 68 via the passage 78 branched from the passage 74, and the compressed air is also supplied to the drawing device unit 69 via the passage 92.

Further, the opening and closing operation of the door will be described with reference to the pneumatic circuit diagram described above. The illustrated state indicates a state in which the door is closed. That is, the door closing solenoid valve 76 is in the first position 7.
6a. The pressurized air from the air source 73 enters the rod side chamber 20c of the cylinder 20a via the passage 77, and the door engine 20 operates in the door closing direction. The pressure air from the air source 73 is supplied to the passage 7 branched from the passage 74.
8, through the locking solenoid valve 89, the switching valve 59, the speed control valve 90, and the quick switching valve 91, are introduced into the rod side chambers 61a of the four retractable cylinders 61 distributed through the passages 92a, 92, 92c. The rod is in the retracted position as shown in FIG. 8 in which the rod is shortened. Also, a passage 92a reaching the retracting cylinder 61
8 is also introduced into the cylinder side chamber 60a of the lock cylinder 60, and the rod 93 extends from FIG.
The lock position is as shown.

To open the door, the door closing solenoid valve 76 switches to the second position 76b. The pressurized air of the air source 73 passes through the passage 79,
b, the door engine 20 operates in the door opening direction. At this time, the locking solenoid valve 89 is switched to the position 89a, the switching valve 59 is also switched to the position 59a, and the pressure on the upstream side of the quick exhaust valve 91 becomes low.
1 is an exhaust position, and four retraction cylinders 61
And the pressurized air to the lock cylinder 94 is rapidly exhausted. Therefore, when the door is about to open, the retracting cylinder 61 and the lock cylinder 60 have returned to the state shown in FIG.

[0032]

According to the plug door apparatus of the present invention, two pins are provided at the upper and lower parts of the door at the door end, and these pins are provided at the entrance edge facing the upper and lower parts of the door at the time of closing the door. A retracting device is provided for engaging and pulling the door into the vehicle interior. The retracting device includes a first claw that contacts the pin in a final step of closing the door to start the retracting cylinder, and that the retracting cylinder operates to activate the retracting pin. And a second claw that draws the pin into the inside of the vehicle. The pin is obliquely protruded from a door end side end so as to be substantially perpendicular to a trajectory in a horizontal plane in a final step of closing the door. The retraction cam is provided to be rotatable obliquely at the entrance / exit edge so as to be substantially parallel to the trajectory in the horizontal plane, and in the final step of closing the door, the door is pushed out to the vehicle body side, The pin provided at the upper part of the door end Close to the drawing device provided in the entrance edge, the first pawl in pull cam of the drawing device actuates the pull cylinder with the rotation of the contact pull cam pin of the door side,
The retracting cylinder further rotates the retracting cam, and the second pawl of the retracting cam strongly retracts the pin on the door side, and the door is supported in a state where the upper side of the door is retracted toward the vehicle body, and the upper side of the upper side of the door is supported. Along with the connecting portion, the guide at the lower part of the door end and the guide at the lower part of the door end, the four corners of the door are supported while being pushed out to the entrance of the vehicle body, so that the installation space for the retracting cam is reduced. Therefore, the installation space for the retracting device at the entrance / exit edge is minimized, and the door is securely adhered to the entrance / exit of the vehicle body. Intrusion of drafts can be completely prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a plug door device of the present invention.

FIG. 2 is a side view of the plug door device of the present invention.

FIG. 3 is a layout diagram of a door rail and a door bottom rail.

FIG. 4 is a side view of a door rail.

FIG. 5 is a side view of a door end rail.

FIG. 6 is a layout diagram of an upper rail.

FIG. 7 is a sectional view taken along line XX of FIG. 1;

FIG. 8 is a view showing the operation of the retracting device.

FIG. 9 is a sectional view taken along the line YY of FIG. 1;

FIG. 10 is a pneumatic circuit diagram of the plug door device.

FIG. 11 is a top view of a catcher provided in a conventional plug door device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle body 2 Entrance / exit 3a, 3b Door 4a, 4b Upper rail 5a, 5b Door end rail 6a, 6b Door bottom rail 7a, 7b Connection part 8a, 8b Guide 9a, 9b Guide 10 Drive 11a, 11b Lower retract device 12a, 12b Upper retraction device 57 Retraction cam 57a First claw 57b Second claw 61 Retraction cylinder 63 Pin

Continued on the front page (72) Inventor Shinji Ueda 6-1-135 Nakamichi, Tarumi-ku, Kobe-shi, Hyogo (72) Inventor Kazuo Aso 1 Kamariya-cho, Kanazawa-ku, Yokohama-shi, Kanagawa Prefecture Tokyu Vehicle Manufacturing Co., Ltd. Vehicle factory design Inside

Claims (1)

(57) [Claims] 1. A plug door device that pushes a door provided at a doorway of a vehicle body toward a vehicle body and opens and closes along a side surface of the vehicle body, comprising: an upper rail provided above the doorway; A door end rail and a door end rail extending from the door end side of the door to the side of the vehicle body in parallel with the door end rail, wherein the upper rail is engaged with a door end side upper portion of the door via a connecting portion. At the same time, the door rail and the door bottom rail are engaged with the door lower side and the door upper side of the door via a guide, and the connecting portion is connected to a driving portion, so that the door upper side of the door is connected. A plug door device that opens and closes a door by being guided and supported by a lower part and a lower part of the door end side, wherein two pins are provided at an upper part and a lower part of the door part side of the door and opposed to the upper part and the lower part of the door part side. When the door is closed, the door engages with these pins to close the door A retracting device is provided on the side of the vehicle. The retracting device includes a first claw that contacts the pin in the final step of closing the door and starts the retracting cylinder, and a second claw that retracts the pin into the vehicle by operating the retracting cylinder. A retracting cam having a claw, wherein the pin is obliquely protruded from an end of the door end side so as to be substantially perpendicular to a trajectory in a horizontal plane in a final step of closing the door, and the retracting cam is disposed in the horizontal plane. A plug door device characterized by being provided obliquely rotatably at an entrance / exit edge so as to be substantially parallel to an inner locus.