JPH0229181Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a power-operated opening/closing device for a passenger door in a vehicle for transporting people such as a bus.

Traditionally, horizontal sliding doors or folding doors have been adopted for the opening/closing structure of the entrance/exit door of passenger transportation vehicles such as buses, but in both cases, the stopping position of the door when opening utilizes the interior space of the vehicle. Due to this structure, the effective area of the vehicle is reduced by the amount occupied by the door.

Furthermore, it is known that the opening/closing structure of the door for getting on and off the vehicle is changed so that it moves outside the vehicle when the door is opened, thereby eliminating the above-mentioned drawbacks, but this has a complicated opening/closing mechanism and has problems with durability.

The purpose of the present invention is to solve the above-mentioned problems and provide a new door opening/closing device that satisfies the safety of passengers outside the vehicle and the durability and reliability of the door opening/closing mechanism. The embodiment shown in the figure will be described in detail. In Fig. 1, 1 and 1' are basically two-part doors made symmetrically, 2 and 2' are drive shafts that control the center of door opening and closing movement, and 3 and 3' are drive shafts 2 and 2, respectively.
The drive rods 4 and 4' are suspension bearings that are rotatably fitted to the drive shafts 2 and 2' and fixed to the vehicle body side, respectively, for transmitting the opening/closing driving force from 2' to the doors 1 and 1'. , the drive rods 3, 3' are integrally connected to the drive shafts 2, 2', respectively, and the connection parts with the doors 1, 1' are pivoted horizontally via connection pins 5, 5', respectively. As a whole, the doors 1 and 1' are suspended from the vehicle body via drive rods 3 and 3', drive shafts 2 and 2', and suspension bearings 4 and 4', respectively, so as to be openable and closable in the horizontal direction. Reference numeral 6 denotes a drive device known per se that is directly connected to the lower part of the drive shaft 2 and fixed to the vehicle body side, and this drive device is provided with output shafts in both up and down directions, and the output shaft can be controlled at a constant level by remote control from the driver's seat. It is designed to repeat right and left rotations within an angular range.

In Figures 1 and 2, 7 and 7' are door 1,
1', one end of the connecting member is rotatably connected to pivot shafts 8, 8' fixed to the back surface of the entrance/exit floor, and the other end of the connecting member is The ends are pivotably connected to the lower ends of the doors 1, 1', respectively, and cooperate with the drive rods 3, 3' to form substantially parallel links.

In FIGS. 1 and 3, reference numerals 9 and 9' indicate reversing rams integrally connected to the lower ends of the drive shafts 2 and 2', respectively, and numeral 10 indicates an interlocking mechanism whose both ends are connected to the reversing rams 9 and 9', respectively. Link 11 is a coupling screw for adjusting the length of the interlocking link 10, and the effective length of the interlocking link 10 can be adjusted by making the through hole of the coupling screw an elongated hole. In addition,
The link member 10' is composed of reversing rams 9, 9' and an interlocking link 10.

In this embodiment, the interlocking mechanism for the drive shafts 2 and 2' is located below the doors 1 and 1', but due to vehicle body design considerations, the drive shafts 2 and 2' may be moved upward. It is also possible to extend the interlocking mechanism and arrange it in the ceiling space of the vehicle. In addition, the length adjustment structure of the interlocking link 10 is adjusted by the connecting screw 1 due to design considerations.
1, it is also possible to use a conventional turnbuckle structure.

To explain the operation when opening and closing the door in the embodiment of the present invention configured as above, when the door is closed, the drive shaft 2 rotates in the direction of arrow P and the reversing ram 9 moves as shown in FIG. Rotate to the closed position shown in the figure.
Since the interlocking link 10 is moved in the direction of the arrow P', the drive shaft 2' rotates in the direction of the arrow Q, the reversing ram 9' moves to the closed position shown in the figure, and the doors 1, 1' are accordingly opened. Move to the closed position shown by the solid line in FIG.

In the case of opening the door, the drive shaft 2 rotates in the direction of the arrow R as shown in Fig. 4, the reversing lever 9 rotates to the open position shown in the figure, and the interlocking link 10 moves in the direction of the arrow R'. , the drive shaft 2' rotates in the direction of the arrow S, and the doors 1, 1' accordingly move to the open position shown by the imaginary line in FIG. 2, that is, to the outside space of the vehicle. Defects can be fundamentally eliminated. The movement form during the opening/closing operation of doors 1 and 1' is as follows:
The movement trajectory shown in Fig. 2 is followed by each translation movement regulated by the connecting members 7 and 7', but since the door has a two-part structure, the maximum horizontal protrusion dimension of the door can be reduced to one piece. Compared to the case of a door, the number of cases is extremely small, and by making the door a two-part type, that is, a two-panel type, an effect that satisfies the safety of passengers outside the vehicle when boarding the vehicle can be obtained.

Further, since the drive device 6 is directly connected to the lower part of one of the drive shafts 2, and the rotational force is transmitted to the other drive shaft 2' via the reversing rams 9, 9' and the interlocking link 10, , rotational force is transmitted using a simple mechanism, does not require a complicated link mechanism, and has the effect of becoming smaller and lighter.

Furthermore, since the interlocking link 10 is equipped with a length adjustment structure, even if the various parts of the movement mechanism are worn out over many years of use and the door position becomes misaligned when the door is closed, the length of the interlocking link 10 can be adjusted. This allows for easy modification and satisfies the durability and reliability of the door opening/closing mechanism.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view showing the lower half of the door for getting on and off a bus equipped with the device of the present invention, from the outside of the vehicle, and FIG. 2 is the same as FIG. 1. , FIG. 3, and FIG. 4 are plan views showing the door interlocking mechanism in the lower part of FIG. 1 and showing the operating states when the door is closed and when the door is opened, respectively. 2, 2'... Drive shaft, 3, 3'... Drive rod, 6...
...Drive device, 7, 7'... Connection member, 9, 9'...
Inverted ram, 10... Interlocking link, 11... Connection screw.

Claims (1)

[Scope of utility model registration request] Drive shafts are rotatably supported on the vehicle body along opposing edges of openings for getting in and out of the vehicle, and drive the two-part doors to open and close, respectively, and one end is fixed to the drive shaft and the other end is rotatably supported by the vehicle body. a drive rod pivotally connected to the door; and a connecting member having one end pivotally connected to the vehicle body and the other end pivotally connected to the door and cooperating with the drive rod to form a substantially parallel link; In a device that opens and closes the door while keeping it substantially parallel to the side wall of the vehicle body, a drive device that is directly connected to the shaft end of one of the drive shafts and that repeats the direction of rotation within a certain angular range; A reversing ram for reversing is connected to each drive shaft so as to protrude in different directions inside and outside the vehicle, and each end of the reversing ram is connected to the other end and is rotated by the drive device. An interlocking link that transmits rotational force in a direction opposite to the rotational direction of one drive shaft to the other drive shaft, and an adjustment means formed in the center of the interlocking link and adjusting the length of the interlocking link. A vehicle door opening/closing device for getting on and off a vehicle.