JP3323274B2 - 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 door provided at a doorway of a vehicle body such as a railway car, which is opened and closed by a substantially parallel movement inside and outside of the doorway and a traveling movement along the side of the vehicle body. The present invention relates to a plug door device.

[0002]

2. Description of the Related Art A plug door device of this type is known from British Patent No. 148,981.
In order 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, and along the side of the vehicle from the door bottom side in parallel with this door rail. Tojiri rails are provided. Then, in order to make the door move approximately parallel to the inside and outside diagonal directions with respect to the entrance,
The upper rail and the door rail are arranged in an inclined manner such that the door end side approaches the door opening side and approaches the door opening, and the door end side of the door end rail has a curved portion directed to the door opening. 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 lower part of the door end is engaged with the door rail 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 apparatus having such a structure, in the final step of closing the door from the side of the vehicle body to the entrance, the door guided by the upper rail, the door rail, and the door end rail is pulled into the vehicle body, 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.

The above-described plug door device 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 that reason,
The door rattles due to wind pressure during driving, etc., and the airtightness at the upper part of the door end is likely to be impaired. Therefore, in the plug door device disclosed in the above-mentioned British Patent 1482981, the catch device as shown in FIG. This catching device is provided with a roller 10 provided on the upper side of a door 101 on the door bottom side via a plate 102.
3 and a bracket 10 on the entrance / exit edge 105 of the vehicle body 104.
6 and a funnel-shaped catcher 107 provided therebetween. In the final process when the door is closed, the door 101
Is pulled toward the vehicle body 104 as shown by the arrow j, so that the roller 103 is received and locked by the catcher 107.

[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.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a plug door device which does not cause backlash when the door is closed and has high airtightness.

[0007]

In order to achieve the above object, a plug door device according to the present invention is provided with guide rails at an upper portion and a lower portion of a door, and the guide rails are provided at an upper portion of a door, at a lower portion of a door, and at a bottom of the door. In a plug door device in which a lower side portion is guided and a door is opened and closed by a substantially parallel movement in an inside and outside oblique direction and a traveling movement along a body side surface with respect to an entrance formed on a side surface of the body, A lock arm that can move up and down and rotate, and a taper member that contacts the lock arm and regulates the rotation direction of the lock arm when the lock arm moves downward, On the side of the door, a receiving member that engages with the lock arm at the fully closed position of the door is provided, and the taper member retracts the lock arm when the lock arm moves downward and engages with the receiving member. Turn in the direction It is intended to be.

[0008]

When the door is in the fully closed position, the side of the door is directed obliquely inward with respect to the entrance, and the lock arm is engaged with the receiving member of the door. When the lock arm moves downward, the lock arm contacts the tapered member and rotates,
The door is pulled inward through the receiving member with which the rotating lock arm engages, and the door is brought into close contact with the entrance and is mechanically held.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are views showing a retracting device of a plug door device of the present invention, wherein FIG. 1A is a top view, FIG. 1B is a front view, and FIG. 1C is a side view.

In the drawing, 1 is a vehicle body, 2 is a doorway, 3 is a door, and a part of the entire door on the side of the door is shown.
The retracting device 11 has a lock arm 51 and a taper member 52 provided on the vehicle body 1 side, and a receiving member 53 provided on the door 3 side as main parts.

The lock arm 51 includes a nut 55 screwed to a screw shaft 54 supported on a vehicle body 1 via a bearing box (not shown), an arm 56 projecting from the nut 55, and a pin A rocking body 58 pivotally supported in a horizontal plane by 57, and locking rollers 59 at both ends of the rocking body 58;
And a contact roller 61 pivotally supported by a bracket 60 attached to the root side of the arm. When the contact roller 61 is pushed, the arm 56 can rotate in the direction, and the nut 55 can move up and down in the direction by the driving of the motor 62 connected to the screw shaft 54.

The tapered member 52 is provided on the contact roller 6 of the vehicle body 1.
1, and a depression 65 in which the contact roller 61 fits, and an inclined portion 66 that goes down to the inside of the vehicle body 1 when lowered.
And a parallel portion 67.

The receiving member 53 of the door 3 has an access opening 70 into which the rocking body 58 and the locking rollers 61 at both ends thereof enter, and a pocket extending downward from the access opening 70 and locking the locking roller 61. And a locking opening 72 having an opening 71.

Next, the operation of the above-described retracting device 11 will be described. As shown by the solid line in FIG. 3A, at the fully closed position in the final step in which the door 3 is closed, the door end side of the door 3 moves substantially parallel to the inside of the vehicle body 1 obliquely and closes the entrance 2. At this time, the contact roller 61 of the lock arm 51 is fitted in the recess 65 of the tapered member 52 as shown in FIG. 2B, and the lock arm 51 is waiting at the solid line position in FIG.

When the door 3 is closed in the direction from the solid line position,
When the rocking body 58 rocks, the right locking roller 5
9 fits in the pocket 71. From this stage, the screw shaft 54 is driven by the motor 62, the nut 55 is lowered in the direction, and the contact roller 61 rolls on the inclined portion 66 of the tapered member 52, and the arm 51 is moved in the direction as shown in FIG. Rotate.

Since the locking roller 59 is housed in the pocket 71, the door 3 is further pulled in with the rotation of the arm 51 in the direction. Since the arm 51 is lowered with the rotation in the direction, the locking roller 59 is accommodated in the recess on both sides of the locking opening 72 as shown in FIG. At this point, if the motor 62 is stopped and the screw shaft 54 is a trapezoidal screw, for example,
The position of the nut 55 is held in a fixed state with the screw shaft 54, and the nut 55 does not rotate by an external force acting on the arm 51. As a result, the fully closed state of the door 3 is mechanically held, and the door 3 does not rattle due to a change in wind pressure or the like.
Further, close contact with the seal 1a on the vehicle body 1 side is ensured, and the inflow of air into the vehicle is reduced.

When the door 3 is opened, the motor 62 is driven in reverse, the arm 51 is raised and rotated, the lock arm 51 is moved to the solid line position in FIG. And the door 3 is disengaged from the lock arm 51, and further the door 3 moves in a direction to open along the side surface of the vehicle body 1. Instead of the screw shaft 54, a shaft in which a nut 55 is rotatably fitted may be moved in the vertical direction.

Next, an entire plug door device using the above-described retracting device will be described with reference to FIGS. FIG. 2 is a front view of the plug door device, FIG. 3 is a side view of the plug door device, and FIG. 4 is a sectional view taken along line AA of FIG.

In FIGS. 2 and 3, 1 is a vehicle body, 2 is a doorway, 3 is a door, 4 is an upper guide rail, 5 is a door guide rail, 6 is a door end guide rail, 7 is a connecting portion, and 8 is a connecting portion. Reference numeral 9 denotes a door end guide, reference numeral 9 denotes a drive unit, reference numeral 11 denotes an upper end retractor on the door end side, reference numeral 12 denotes a lower end retractor on the door end side, and reference numeral 13 denotes a stabilizer.

The drive unit 10 is driven by the main motor 20
The drive shaft 21 rotates, the second drive shaft 24 rotates via the gears 22 and 23, and the ball screw 24 of the second drive shaft 24
The nut 25 of the connecting portion 7 is screwed into the connector a, and the door 3 is driven to open and close via the connecting portion 7. The drive unit 10 has a slide rail 26, and a slide guide 27 guided by the slide rail 26 is connected to the nut 25.

The connecting portion 7 has a first arm 28 swingable about a second drive shaft 24 attached to one side of a nut 25, and a second arm 30 fixed to the door 3 via a spherical bearing 29. This is a structure connected to one arm 28. A roller 31 guided by the upper guide rail 4 is supported in the middle of the second arm 30.

Referring to FIG. 4, the door guide rail 5 is
Is provided at a position corresponding to the entrance 2 of the vehicle, is entirely linear, and has a tilt angle α in which the door end side is inside the vehicle body 1. The door bottom guide rail 6 is provided so as to extend from the door bottom side of the door 3 to the side surface of the vehicle body 1, and has a straight section 6a and a curved section 6b.
have. Then, the rollers 32 of the door guide 8 are guided by the door guide rail 5, and the rollers 33 of the
Is guided to the door bottom guide rail 6. That is, the door end side of the door 3 is gradually drawn into the vehicle body 1 along the door end guide rail 5, but the door end side of the door 3 is moved to the curved portion 6a of the door end guide rail 6 in the final step of closing the door. Is quickly drawn along.

Referring to FIGS. 2 and 3, the stabilizer 1
Numeral 3 is for preventing vertical swaying (dancing) when the door is opened and closed. Racks 35, 35 having guide grooves 36, 36 above and below the door 3 are attached. The synchronous shaft 40 is supported on the vehicle body 1 via swingable hinges 41, 41. Pinions 37, 37 meshing with the rack are fitted into the upper and lower ends of the synchronous shaft 40, and horizontal rollers 38 running in the guide grooves 36, 36 via the brackets 39, 39.
a, 38a are attached. A vertical roller 38b that runs in the guide groove 36 and receives the vertical load of the door 3 is attached to the upper bracket 39. When the upper side of the door 3 is opened and closed by the drive unit 10, the opening and closing operation is performed by the upper rack 35, the upper pinion 37, the synchronous shaft 40, and the lower pinion 3.
7. The signal is transmitted to the lower rack 35, and the door 3 opens and closes smoothly without breaking up and down.

The upper retracting device 11 and the lower retracting device 12 described with reference to FIG. The screw shafts 54 for the nuts 55, 55 of the upper and lower retraction devices 11, 12 are provided in common, and are driven by one motor 62 via a universal joint 75.

The opening and closing operation of the plug door device will be described with reference to FIG. When the door 3 is opened, first, the motor 62 is driven, the nut 55 of the lock arm 52 is raised, and the lock arm 52 is rotated to the rear side of the drawing, so that the roller 59 pushes the door 3 and escapes from the receiving member 53. Next, the main motor 20 of the drive unit 10 is driven, the second drive shaft 24 is rotated via the first drive shaft 21 and the gears 22 and 23, and the nut 25 meshing with the ball screw 24a of the second drive shaft 24 is drawn. Move to the right. The accuracy of this movement is ensured by the slide guide 27 guided by the slide rail 4. The first arm 28 connected to the nut 25 moves the second arm 30 via the spherical bearing 29, and the door 3 moves along the side of the A body 1 in cooperation with the roller 31 guided by the upper rail 4. It moves and becomes fully open as in the state a in FIG.

When the door 3 is closed, the main motor 20 shown in FIG. 2 rotates in the reverse direction, and the connecting portion 7 runs toward the position shown in FIG.
The door 3 in the state a in FIG. 4 is fully closed in the state b. In this fully closed position, as shown in FIG. 1A, the roller 59 of the lock arm 56 is housed in the pocket 71 of the receiving member 53, then the motor 62 is driven, and the nut 55 of the vertical retraction device 11, 12 is lowered. . Then, the arm 56 rotates in the direction of FIG. 1A, and the door 3 is pulled in the direction.

[0027]

According to the plug door device of the present invention, a lock arm which can be moved up and down and rotatable is provided on the vehicle body side opposite to the door end side of the door. A taper member for restricting the rotation direction of the lock arm in contact therewith, and a receiving member for engaging with the lock arm at a fully closed position of the door is provided on the side of the door of the door, wherein the taper member has a downward lock arm. The lock arm is rotated in the retracting direction of the door when it is moved to engage with the receiving member, and when the door is in the fully closed position, the door end side is directed inward from an oblique direction to the entrance, When the lock arm engages with the receiving member of the door, and then the lock arm moves downward, the lock arm contacts the tapered member and rotates, and the door moves inward through the receiving member with which the rotating lock arm engages. Pull Inclusive, because the door is in close contact mechanically held in entrance, without door vibrates even under high pressure at high speeds, can completely prevent noise and draft intrusion at high speeds.

[Brief description of the drawings]

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

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

FIG. 3 is a side view of the plug door device of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is a top view of a catcher provided in a conventional plug door device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Doorway 3 Door 4 Upper guide rail 5 Door guide rail 6 Door bottom guide rail 11, 12 Retraction device 51 Lock arm 52 Taper member 53 Receiving member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-198577 (JP, A) JP 2-27509 (JP, B2) JP-B 47-46962 (JP, B1) Jiko 2- 22476 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E05D 15/00-15/20 E05F 15/14 B61D 19/02 B60J 5/04

Claims (1)

(57) [Claims] 1. A guide rail is provided at an upper part and a lower part of a door, and the upper part of the door, the lower part of the door, and the lower part of the door end of the door are guided by the guide rail. A plug door device that opens and closes the door by substantially parallel movement in and out of oblique directions and traveling movement along the side of the vehicle body. When the lock arm moves downward, a taper member is provided which abuts on the lock arm and regulates the rotation direction of the lock arm, and engages with the lock arm at the fully closed position of the door on the side of the door. A plug door device, wherein the taper member rotates the lock arm in the direction of pulling in the door when the lock arm moves downward and engages with the reception member.