JPH0454304Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for connecting double doors for boarding and alighting of a railway vehicle or the like by means of a belt drive.

[Conventional technology]

As a belt-driven interlocking device used in the drive device for opening and closing the above-mentioned double doors,
Conventionally, there was one disclosed in Japanese Utility Model Publication No. 53-47798. This one, as shown in Figure 2,
Two support fittings 20 are removably attached at two locations above the doors 10a and 10b with an interval between them.
Pulleys 6a and 6b are supported by a and 20b in a vertical position with their rotational axes being horizontal, and an endless belt 7 wound between the pair of pulleys 6a and 6b is moved at two points in opposite directions. Clamping 9a,
One end of the connecting rods 8a, 8b is attached to each via the connecting rod 9b, and the other end of these connecting rods 8a, 8b is attached to the arms 11a, 11b respectively fixed to the upper ends of a pair of double-openable doors 10a, 10b. It was fixed by nuts 12a and 12b. The intermediate portions of the connecting rods 8a and 8b are connected to bearings 21a and 21a provided on the support fittings 20a and 20b, respectively.
21b so that it could slide freely.

According to such a conventional interlocking device, the pair of connecting rods 8a, 8b are horizontally moved in opposite directions by the forward/reverse rotation of the belt 7 accompanying the forward/reverse rotation of the pulleys 6a, 6b. Therefore, Natsu 12
The door bodies 10a and 10b, which are separately connected to a pair of connecting rods 8a and 8b via arms 11a and 11b, are synchronized by the same width by the pushing and pulling action of the connecting rods 8a and 8b. It is opened or closed. In addition, the connecting rods 8a and 8b are connected to bearings 21
It is smoothly moved horizontally by the actions of a and 21b.

[Problem that the invention attempts to solve]

Generally, the above type of interlocking device is installed inside a narrow lintel at the top of the vehicle body, so it must be as compact as possible in order to secure space for the device and ensure good workability during installation and removal. That is advantageous. In particular, while there is a limit to the height of the vehicle body, there is a demand for the height of the entrance/exit to be as high as possible, so it is advantageous to reduce the vertical width of the interlocking device. Furthermore, from the viewpoint of improving workability, it is desirable that each component such as the connecting rods 8a, 8b can be taken out individually from the lintel during maintenance and inspection.

However, in the conventional interlocking device disclosed in the above-mentioned publication, the pulleys 6a and 6b are installed in a vertical position, and the connecting rods 8a and 8b are arranged at upper and lower positions sandwiching the belt 7, so the interlocking device The overall vertical width is larger than the diameter of the pulleys 6a, 6b, that is, equal to or larger than the distance between the pair of connecting rods 8a, 8b, making it difficult to make the interlocking device compact.

In addition, the connecting rods 8a, 8b are connected to the supporting metal fittings 20a, 2
Since the connecting rods 8a, 8 are inserted through the bearings 21a, 21a provided at the
To remove the connecting rods 8a and 8b, first remove the entire interlocking device from the vehicle body, then attach the connecting rods 8a and 8b to the bearings 21.
It was necessary to pull it out from the bearings 21a and 21b inside the lintel, which resulted in poor workability.

This idea was made to solve the above-mentioned problems. By arranging the pulley in a horizontal position, the vertical width of the interlocking device can be reduced, and the horizontal movement of the connecting rod can be controlled by aligning it with the support shaft of the pulley. The connecting rods are guided by rollers interposed between them to simplify their installation and removal, and the two connecting rods are brought close to each other to prevent collisions between the connecting rods due to vibrations when opening and closing the door. It is an object.

[Means for solving problems]

A technical means to solve the above problem is that a belt is wound between a pair of pulleys placed above the door in a horizontal position with the axis of rotation vertical, and is attached to each of the pair of doors that can be opened in both directions. A pair of connecting rods are disposed inside the belt, and the rollers keep the pair of connecting rods separated from each other between the pair of pulleys. is provided.

[Effect]

The effect of the above technical means will be explained.

When the pulley rotates in the forward and reverse directions, the belt rotates in the forward and reverse directions, and the pair of connecting rods are horizontally moved in opposite directions. Therefore, the door bodies, which are individually connected to the pair of connecting rods via the arms, open or close in synchronism by the same width due to the pushing and pulling action of these connecting rods.

During such operation, the pair of connecting rods
The pulley is guided by a support shaft and a roller provided to support the pulley, and the roller also prevents the two connecting rods from colliding.

〔Example〕

An embodiment of this invention is shown below in Figures 1a and 1.
This will be explained with reference to figure b.

The interlocking device of this embodiment is installed in a lintel above the entrance/exit of a vehicle, and support fittings 2a and 2b are installed with screws 3a and 3b. Support shafts 4a and 4b are protruded from the support pieces of the support fittings 2a and 2b, respectively, and a pair of pulleys 5a and 5b rotate around a perpendicular rotation axis X-X on these support shafts 4a and 4b. It is supported in a horizontal position to make it possible. Furthermore, connecting rods 8a, 8a, 9b are connected to two parts of the belt 7 wound between a pair of pulleys 5a, 5b that move in opposite directions, that is, two parts of the belt 7 that divide the belt 7 into two equal lengths, via clamps 9a, 9b. One end of 8b is specially fixed. The other ends of these connecting rods 8a, 8b are respectively fixed to arms 11a, 11b attached to the upper ends of a pair of double-openable door bodies 10a, 10b. This fixing is done with lock nuts 12a, 12
It is done by b. The connecting rods 8a, 8b are arranged inside the belt 7, and their intermediate portions are slidably backed up by the upper ends of the support shafts 4a, 4b that protrude above the pulleys 5a, 5b. . Further, a screw 22 is attached to the vehicle body 1 between the pair of pulleys 5a and 5b.
There is a support fitting 23 fixed by a support piece, and a roller 24 is attached to the support piece so as to be rotatable around a vertical axis of rotation. ing.

According to the interlocking device having the above configuration, the pulleys 5a,
5b and the belt 7 rotate in the forward and reverse directions, the pair of connecting rods 8a, 8b are guided by the support shafts 4a, 4b and the roller 24, and are maintained in a separated state without buffering each other, and move smoothly horizontally. .
Since the moving direction of the connecting rods 8a, 8b and the tangential direction of rotation of the support shafts 4a, 4b and roller 24 that guide them are always the same, the frictional resistance is extremely small, and therefore the pulleys 5a, 5b and This does not affect the durability of the connecting rods 8a, 8b at all. Further, the connecting rods 8a, 8b can be easily removed by simply lifting the connecting rods upward after removing the other ends from the arms 11a, 11b. Furthermore, since the pulleys 5a and 5b are arranged in a horizontal position, the vertical width of the entire interlocking device is significantly smaller than that of the conventional device explained with reference to FIG. Note that since the connecting rods 8a and 8b are placed inside the belt 7, the connecting rods 8a and 8b come close to each other, but since the rollers 24 described above are provided, both the connecting rods 8a and 8b are protected from vibration. There will be no collision.

[Effect of idea]

As is clear from the above explanation, according to this invention, in addition to obtaining the same opening/closing operation as the conventional technology, the pulley is arranged in a horizontal position, so the vertical width of the entire interlocking device is smaller than that of the conventional technology. In addition to being significantly smaller (less than half) compared to the belt, since the connecting rod is placed inside the belt, its overall depth is also as small as or close to the belt depth. Therefore, a compact interlocking device that can be easily installed and removed in a narrow lintel is obtained. In addition, since the connecting rod is guided by the support shaft or roller of the pulley, stable horizontal movement is facilitated without the need for bearings as in the past. This simplifies the time work and improves work efficiency.

[Brief explanation of the drawing]

FIG. 1a is a partially omitted plan view showing an embodiment of this invention, FIG. 1b is a partially omitted front view of the same, and FIG. 2 is a partially omitted front view of the prior art. 1...Vehicle body, 4a, 4b...Support shaft, 5a, 5
b...Pulley, 7...Belt, 8a, 8b...
Connecting rod, 10a, 10b...Door, 11a, 11b
... Arm, 24 ... Laura.

Claims (1)

[Scope of utility model registration request] A belt is wound between a pair of pulleys placed above the door in a horizontal position with the axis of rotation vertical, and the arms attached to the pair of double-openable doors are moved in opposite directions of the belt at two locations. A pair of connecting rods connected to each other separately are arranged inside the belt, and a roller is provided between the pair of pulleys to keep the pair of connecting rods separated from each other. Door interlocking device.