JPH1148866A - Entrance part structure for bus equipped with lift step device for getting on and off - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide entrance part structure for a bus equipped with a lift step device for getting on and off which is excellent in getting on and off capability and enables a sliding door to be usable which can facilitate the construction. SOLUTION: This structure has a lift step device 10 for getting on and off which elevates a movable step 15 between a position almost horizontal to a floor 3 and the ground, a step elevation space 'A' formed at an entrance part allowing elevation of the movable step 15, an undercover 21 for sealing and opening the lower part of the step elevation space 'A', a fixed rail 31 arranged in a sliding door housing part 40, a movable rail for sliding door 31 provided at the undercover 21 and positioned linearly to the fixed rail 41 at the position where the undercover 21 seals the step elevation space 'A', and a sliding door 30 which moves between the movable rail 31 arranged linearly and the fixed rail for opening/closing the entrance 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus entrance / exit structure, and more particularly to a bus entrance / exit structure equipped with a wheelchair lift / lift device.

[0002]

2. Description of the Related Art Conventionally, various buses have been developed in which a lift step device for getting on and off the vehicle is provided at a doorway for facilitating getting on and off of a wheelchair user.

[0003] As a prior art of a bus equipped with the lift step device for getting on and off, there is, for example, Japanese Utility Model Laid-Open No. 5-3758.
No. 5 publication.

In this prior art, a step 101 is provided at an entrance as shown in FIG. 7, and the step 101 is extended from a healthy person shown by a solid line to a floor 102 as shown by a two-dot chain line 101a. And the extended step 10
1a is guided by the lift pillar 103 so that it can be lowered vertically to the ground. A step expansion / contraction mechanism (not shown) for extending and contracting the step 101 by hydraulic pressure or the like, and as shown by a two-dot chain line 101a A lift mechanism (not shown) for vertically elevating the extended step 101 by hydraulic pressure or the like is provided.

[0005] At the entrance of the bus equipped with this lift step device, a surrounding wall 104 surrounding the side edges and the inner edge of the step 101 with a gap to form a step elevating space A is formed, for example, by a vehicle body. A support frame 105 that supports the lift column 103 is fixed to a lower edge of the surrounding wall 104.

Further, an under cover 106 is supported on the vehicle body frame by a parallel link 107 so as to be swingable in the vehicle width direction, and the under cover 106 is sealed by an actuator 108 such as an air cylinder at a lower portion of the elevating space A. Is swingable between a closed position indicated by a circle and an open position where the elevating space A is opened to enable the elevating and lowering of the step 101 as indicated by a two-dot chain line 106a. Reference numeral 10
Reference numeral 9 denotes a door that opens and closes a doorway. The door 109 employs a pair of swinging doors whose side ends are pivotally supported on the side of the doorway by hinges or the like and are turned inward and left and right by turning inward of the vehicle body. .

When the wheelchair user gets on the vehicle, the door 109 is opened and the step 101 is extended as shown by a two-dot chain line 101a. In conjunction with this, the actuator 108 contracts and the undercover 106 is opened from the closed position. Swings to the position, and is held at that position, and the elevating space A is opened.

After the extended step 101 is lowered to the ground and the wheelchair user is put on the ground, the wheelchair is raised again and the ride of the wheelchair user is completed. Then, the step 101 contracts and becomes a step 101 for getting on and off the healthy person. Then, in conjunction therewith, the actuator 108 extends and the under cover 106 swings from the open position to the closed position, and then the door 109 closes the entrance.

By doing so, it is possible to prevent dust and water from entering the vehicle interior from the gap between the step 101 and the surrounding wall 104, particularly during traveling, without hindering the operation of the lift step device for getting on and off.

[0010]

According to the above prior art, a bus equipped with a lift step device for getting on and off is provided with a movable under cover capable of sealing and opening a space for raising and lowering the steps of the step device for getting on and off. It is possible to prevent dust and water from entering the passenger compartment from around the movable step during traveling without hindering the operation of the lift step device for getting on and off.

However, since the doors for opening and closing the doors are a pair of swing doors whose side ends are pivotally supported by hinges and the like at the side of the doors and turn inward and open to the left and right, the doors are opened. At times, the doors are housed so as to overlap the surrounding walls on both sides of the step, so that the effective width of the entrance is limited, and the provision of a pair of swing doors may complicate the structure and increase the manufacturing cost. There is.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention, which has been made in view of the above points, is to provide a lift step for getting on and off which enables the use of a sliding door which can easily secure an effective width of a boarding opening and a step and can simplify the configuration. An object of the present invention is to provide a bus entrance / exit structure provided with a device.

[0013]

According to a first aspect of the present invention, there is provided an entrance / exit portion for lowering and raising a movable step between a position substantially horizontal to the floor and the ground. Lift step device for getting on and off, a step elevating space formed in the getting on / off portion, the side of the vehicle body side being opened to the getting on and off port to allow the movable step to go up and down, and a sealed position and a step for sealing the lower part of the step elevating space. An under cover that can be moved between an open position that opens a lower portion of the elevating space to enable the elevating operation of the movable step, a fixed rail disposed in a sliding door storage portion of the vehicle body, and the under cover. A movable rail provided and the under cover is disposed linearly with respect to the fixed rail in the closed position; and Moving between the constant rail and having a slide door for opening and closing the entrance.

Therefore, when raising and lowering the movable step of the lift step device for getting on and off, the sliding door is moved from the movable rail side provided on the under cover to the fixed rail side in the sliding door storage portion to open the entrance and exit, and the movable door is moved. The movable cover is moved to the open position by moving the under cover with the rail to the open position, and the movable step is moved up and down through the open space, allowing the use of slide doors. And simplification of the configuration can be obtained.

According to a second aspect of the present invention, the undercover is supported on the body member by an undercover support rail so as to be reciprocally movable between the closed position and the open position, and the undercover is moved between the closed position and the open position. The under cover is reciprocated by the under cover driving device, and the under cover is supported by the rigid body member by the under cover support rail. Even if acts on the movable rail, the movable rail can securely hold the sliding door with rigidity.

According to a third aspect of the present invention, the lift step device for getting on and off the vehicle comprises: a lift support standing upright on a vehicle body member;
A lift body supported by the lift column and moved up and down by a movable step elevating drive device, and between a storage position in which a base end is rotatably supported by the lift body and a standing position and a use position in which the lift body is substantially horizontal. And the above-mentioned movable step for swinging.

Accordingly, the movable step is raised and lowered to swing up to the storage position, so that the movable step is compactly stored, and a living space in the vehicle compartment can be easily secured, thereby improving the livability.

According to a fourth aspect of the present invention, a movable step swing device is provided between the lift main body and the movable step, and the movable step is swinged between the storage position and the use position by the movable step swing device. The operability of the lift step device for getting on and off can be improved by the dynamic driving.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a structure of a bus entrance equipped with a lift step device for getting on and off according to the present invention.

FIG. 1 is a side view of a bus showing an outline of the present embodiment, FIG. 2 is a side view of a main part of an entrance / exit section, (a) shows the outline, and (b) shows the above ( FIG. 3 is an enlarged view of a portion a in FIG.

An entrance 2 is provided substantially at the center of the side of the bus 1. The entrance 2 is a floor 3 and a floor 3 as shown in FIGS.
, A stepped vehicle body member, for example, a lift mounting portion 4.

The trailing edge of the lift receiver 4 and the lower surface 3a of the floor 3
The surrounding wall 5 is bridged therebetween, and a surrounding wall 6 is erected between both side edges of the lift mounting portion 4 and the floor 3, and the surrounding walls 5 and 6 are fixed to the vehicle body frame.

Further, the lift mounting part 4 is provided at the entrance.
Lift space A surrounded by the front end 4a of the vehicle and the opposing surrounding walls 6 and the vehicle body side is open to the entrance 2.
And the lift step device 1 for getting on and off the lift mounting portion 4
0 is provided.

The lift step device 10 has a pair of lift posts 11 erected at both ends of the tip 4a of the lift mounting portion 4, respectively.

Each of the lift posts 11 has a pair of sprockets 12a vertically spaced from the lift posts 11,
The chain 12 wound between these sprockets 12a
b and a movable step lifting / lowering drive device 1 comprising an electric motor 12c for driving the one sprocket 12a to rotate forward and backward.
2 are provided.

Further, one end of each of the lift posts 11 is connected to the chain 12b and is supported by the lift posts 11 so as to be able to move up and down. The upper end of the elongated rod-shaped lift body 14 is fixedly provided.

A base end 15a of a plate-shaped movable step 15 is rotatably supported by a support shaft 16 between the lower ends of the lift bodies 14, and the lift body 14 and the movable step 15
The movable step 15 swings between a storage position in an upright state and a use position in a substantially horizontal state by expansion and contraction of a hydraulic step swing device, for example, a hydraulic cylinder 17 provided between the movable step swinging device.

Therefore, the lift step 10 for getting on and off can be made compact by raising the movable step 15 to the storage position when not in use, a living space in the vehicle interior can be secured, and the hydraulic cylinder 17 can be improved. By moving the movable step 15 between the storage position and the use position by expansion and contraction, the operability of the lift step 10 for getting on and off can be improved.

Further, an auxiliary step 19 is provided at the distal end 15b of the movable step 15 so as to be swingable, and the base end 15a is in contact with the lower portion of the lift body 14 during use to hold the movable step 15 in the use position. A projection 15e is provided, and a flange 15c that functions as a guide and a car stop when the wheelchair is moved is formed on the movable step 15 to protrude upward along both side edges of the upper surface 15d as shown in FIG.

In the vicinity of the upper end of each lift body 14, a base end 1 is provided.
The grip 8a is pivotally supported by the lift body 14, and a grip 18 that swings between a storage position that stands up in conjunction with the movable step 15 and a use position that is substantially horizontal is provided.

On the other hand, a pair of undercover support rails 2 extending along the vehicle width direction at both ends of the lower surface of the lift mounting portion 4.
0 and a rigid undercover support rail 2
The under cover 21 is supported so as to be capable of reciprocating movement through the “0”.

The under cover 21 has a connection link 22a whose one end is pivotally supported by the under cover 21 and a base end which is supported by a vehicle body member, for example, the vehicle body frame 7, and whose distal end is connected to the other end of the connection link 22a. As shown in FIG. 2, the step-up / down movement is performed by an undercover driving device 22 having a supported swinging link 22b, and a cylinder 22c that extends and contracts by hydraulic or air pressure provided between the swinging link 22b and the vehicle body frame 7. A closed position where the lower part of the space A is sealed to prevent dust and water from entering the room, and a step elevating space which is housed below the lift receiver 4 as shown by a two-dot chain line 21a in FIG. When A is opened, the movable step 15 is reciprocated between an open position and a movable position where the movable step 15 can be moved up and down.

At the tip of the under cover 21, a movable rail 3 for a sliding door for movably supporting the sliding door 30 is provided.
1 is fixed along the vehicle front-rear direction.

As shown in FIG. 3, the movable rail 31 fixed to the end of the under cover 21 has the sliding door housing 4 of the vehicle body B when the under cover 21 is in the closed position.
0 is disposed in a straight line with respect to a fixed rail 41 supporting the sliding door 30 stored in the sliding door storage section 40 and disposed along the vehicle body front-rear direction. The lower surface is supported via an under cover support rail 20.

Since the under cover 21 is supported by the under cover support rail 20 attached to the lower surface of the rigid lift mounting portion 4, vibrations caused by the load of the slide door 30 and running on the movable rail 31 are generated. Even if it operates, the sliding door 30 is securely held on the movable rail 31 with rigidity.

Further, the movable step 15 is held at the horizontal use position, and the movable step
When the upper surface 15d of the movable step 15 rises to a substantially horizontal position with the floor 3 by the above operation, a height position detecting device (not shown) such as a limit switch for detecting the rising position is provided. It is configured to stop the rotation of 12c.

When the upper surface 15d of the movable step 15 is substantially horizontal with respect to the floor 3, the gap between the floor 3 and the movable step 15 is closed, and the movable step 15 is moved from the movable step 15 to the floor 3 or A protector 8 is attached to the floor 3 to facilitate movement of the wheelchair from the floor 3 onto the movable step 15.

Next, a description will be given of how a wheelchair user gets on and off the vehicle using the lift / step device 10 configured as described above.

At the time of riding, as shown in FIG. 2, the undercover 21 is located at the closed position where the lower part of the step elevating space A is closed, and at the storage position where the movable step 15 and the grip 18 are upright. When the entrance 2 is closed, the slide door 30 is moved from the movable rail 31 onto the fixed rail 41 disposed in the slide door storage section 40 of the vehicle body B as shown in FIG. 2 is opened, and the slide door 30 is stored in the slide door storage section 40.

Next, the cylinder 22c of the undercover driving device 22 is contracted to swing the swing link 22b, and the undercover 21 is moved along the undercover support rail 20 via the connecting link 22a as shown in FIGS. Two-dot chain line 21a
And the step elevating space A is opened.

Then, the lift body 14 and the movable step 1
5 by contracting the hydraulic cylinder 17 erected between
The movable step 15 is swung from the storage position shown in FIG. 4 to the use position in the horizontal state shown in FIG. 5 so that the projection 15e abuts on the lower portion of the lift body 14, and the grip 18 is also swung to the use position. Then, each is held at the use position.

Subsequently, the electric motor 12c of the movable step elevating drive unit 12 is rotated, for example, rotated forward, and the bracket 13 is lowered along the lift support 11 by the chain 12b via the sprocket 12a.
Step 3 supported by lift body 3 via lift body 14
5 is lowered in the opened step elevating space A, and the electric motor 12c is stopped at a position in contact with the ground as shown in FIG.

Next, the auxiliary step 19 provided at the front end 15b of the movable step 15 is reversed and its front end 19a
Is brought into contact with the ground, and a gentle slope is formed between the upper surface 15d of the movable step 15 and the ground to facilitate movement of the wheelchair.

Then, the user of the wheelchair moves from the ground to the upper surface 15d of the movable step 15 via the auxiliary step 19 and stops while sitting on the wheelchair. For stability.

Subsequently, the electric motor 12c of the movable step lifting / lowering drive device 12 is rotated in the reverse direction so that the sprocket 12a,
The bracket 13 is lifted by the chain
1 to raise the movable step 15 supported by the lift body 14 in the open step elevating space A, as shown in FIG.
When d rises to a position substantially level with the floor 3,
The rise is detected by the height position detecting device, and the rotation of the electric motor 12c is stopped according to the detection signal to stop the movable step 15 at a position where the upper surface 15d is substantially horizontal to the floor 3.

Then, the user of the wheelchair moves on the floor 3 from the movable step 15 via the protector 8 and gets on the bus 1 while sitting on the wheelchair.

Thereafter, the hydraulic cylinder 17 provided between the lift main body 14 and the movable step 15 is extended, and the movable step 15 is raised from the use position shown in FIG. 5 to the storage position shown in FIG. Move and grip 1
8 are also swung to the storage position in conjunction with each other and held at the storage positions.

Next, the cylinder 22c of the under cover driving device 22 is extended to swing the link 22b and the connecting link 22.
The under cover 21 is guided by the under cover support rail 20 through the a and the like, and is moved to a sealed position indicated by a solid line in FIGS. 2 and 3 to seal the lower part of the step elevating space A.

By moving the under cover 21 to the closed position, the movable rail 31 provided on the under cover 21 is linearly moved with respect to the fixed rail 41 provided in the sliding door storage section 40 of the vehicle body B. Be placed.

Subsequently, the slide door 30 stored in the slide door storage section 40 is moved from above the fixed rail 41 to the movable rail 31 provided on the under cover 21 as shown in FIG.
The vehicle is moved upward to close the entrance 2 by the slide door 30, thereby ending the entry of the wheelchair user by the entrance lift step 10.

On the other hand, at the time of getting off, as in the case of getting on board, FIG.
When the movable cover 15 and the grip 18 are located at the storage position where the under cover 21 shown in FIG. 3 seals the lower part of the step elevating space A, and the door 2 is closed by the sliding door 30, the sliding door 30 is closed. Is moved from the movable rail 31 provided on the under cover 21 to the fixed rail 41 in the sliding door storage part 40 to open the entrance 2.

Next, the under cover 21 is moved to the open position along the under cover support rail 20 by the contraction of the cylinder 22c of the under cover driving device 22 to open the step elevating space A, and the lift body 14 and the movable step 15 are moved. The movable cylinder 15 and the grip 18 are swung from the storage position shown in FIG. 4 to the use position shown in FIG. 5 to be held at the use position by contracting the hydraulic cylinder 17 installed between them.

The wheelchair user moves from the floor 3 to the movable step 15 via the protector 8 while sitting in the wheelchair.

Subsequently, as described above, the electric motor 12c of the movable step elevating drive unit 12 is rotated forward to move the wheelchair and the wheelchair user on the wheelchair via the sprocket 12a, the chain 12c, the bracket 13, the lift body 14, and the like. The step 15 is lowered in the opened step elevating space A, and the electric motor 12c is stopped at a position where it comes into contact with the ground as shown in FIG.

Next, the auxiliary step 19 is reversed so that the tip 19a of the auxiliary step 19 is brought into contact with the ground to form a slope between the upper surface 15d of the movable step 15 and the ground, and the wheelchair user remains seated in the wheelchair. The user moves to the ground from above the movable step 15 via the auxiliary step 19 and gets off the vehicle.

Subsequently, the electric motor 12c of the movable step lifting drive device 12 is rotated in the reverse direction to raise the movable step 15, and as shown in FIG.
When d rises to a position substantially horizontal to the floor 3, it is detected by the height position detection device, and the rotation of the electric motor 12c is stopped according to the detection signal, and the movement of the movable step 15 is stopped.

Thereafter, the hydraulic cylinder 17 provided between the lift main body 14 and the movable step 15 is extended, and the movable step 15 is raised from the horizontal state of the use position shown in FIG. At the same time, the grip 18 is also swung to the storage position and held at the storage position.

Then, the cylinder 22c of the under cover driving device 22 is extended to move the under cover 21 along the under cover support rail 20 to the closed position shown by the solid line in FIGS. Then, the slide door 30 stored in the slide door storage unit 40 is moved from above the fixed rail 41 to the under cover 21.
And the sliding door 30 closes the entrance 2, whereby the getting off of the wheelchair user by the getting on / off lift step device 10 is completed.

According to the present embodiment described above, the slide door storage portion is provided at the tip of the under cover 21 which can seal and open the lower part of the step elevating space A where the movable step 15 is raised and lowered. 40
Movable rail 3 that is linear with respect to fixed rail 41 inside
1 to provide a lift step device 1 for getting on and off.
Thus, the sliding door 30 can be used without hindering the operation of the sliding door 30, the effective width of the entrance 2 can be ensured, and the use of the sliding door 30 can reduce the manufacturing cost.

In the above embodiment, the movable step 1
Although an example has been described in which an electric motor or the like is used as the movable step lifting / lowering drive device 12 that moves up and down 5, the present invention is applied to the above-described embodiment, such as using a cylinder or a hydraulic motor that is operated by hydraulic pressure or air pressure. The present invention is not limited thereto, and can be appropriately changed without departing from the gist of the present invention.

[0061]

According to the structure of the bus entrance equipped with the lift step device for getting on and off according to the present invention described above,
When getting on or off by moving up and down the movable step of the lift step device for the getting on and off, the sliding door is moved from the movable rail side provided on the under cover to the fixed rail side in the sliding door storage part to open the entrance and exit, and the movable rail is opened. The movable cover is moved to the open position by moving the under cover provided with, and the movable step is raised and lowered through the opened step lifting space, and the slide door can be used. In addition to greatly improving the convenience of a bus equipped with a lift step device for getting on and off, the structure can be simplified and the manufacturing cost can be reduced, contributing to the bus manufacturing field. is there.

[Brief description of the drawings]

FIG. 1 is a side view of a bus showing an outline of an embodiment of a bus entrance / exit structure of a bus equipped with a lift step device for getting on and off according to the present invention.

FIGS. 2A and 2B are side views of an entrance / exit unit according to the embodiment, wherein FIG. 2A is a schematic view thereof and FIG. 2B is an enlarged view of a part a in FIG.

FIG. 3 is a sectional view of a principal part taken along line II of FIG. 1;

FIG. 4 is an operation explanatory view showing a use state of the embodiment.

FIG. 5 is an operation explanatory view showing a use state of the embodiment.

FIG. 6 is an operation explanatory view showing a use state of the embodiment.

FIG. 7 is an explanatory view showing an outline of a structure of a bus entrance / exit portion equipped with a conventional lift step device for getting on / off.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bus 2 Entry / exit entrance 3 Floor 4 Lift mounting part 10 Lift step device for getting on and off 11 Lift support column 12 Movable step elevating drive device 14 Lift body 15 Movable step 17 Hydraulic cylinder 20 Under cover support rail 21 Under cover 22 Under cover drive device 30 Sliding door 31 Movable rail 40 Sliding door storage part 41 Fixed rail A Step elevating space B Body

Claims (4)

[Claims] 1. A bus entrance / exit structure provided with a lift step device provided at the entrance / exit portion of the bus and having a movable step which descends and rises between a position substantially horizontal to the floor and the ground. A lift step device for getting on and off the vehicle which is provided at an entrance and exit portion for lowering and raising the movable step between a position substantially horizontal to the floor and the ground, and a vehicle body side formed at the entrance and exit portion as an entrance and exit. A step elevating space that is opened to allow the movable step to move up and down, a closed position that seals a lower part of the step elevating space, and an open position that opens the lower part of the step elevating space to enable the elevating operation of the movable step. An under cover movable between the under cover, a fixed rail provided in a sliding door storage portion of the vehicle body, and an under cover provided on the under cover and the under cover in the closed position. A movable rail arranged linearly with respect to the fixed rail; and a slide door for moving the under cover between the movable rail and the fixed rail in the closed position to open and close the entrance. The entrance / exit structure of the bus equipped with the characteristic lift step device. 2. An under cover support rail attached to a vehicle body member that supports the under cover so as to reciprocate between the closed position and the open position, and an under cover supported by the under cover support rail. An undercover drive device for reciprocatingly moving between a closed position and an open position, comprising: an entrance / exit portion structure of a bus equipped with a lift / step device for getting on / off according to claim 1. 3. The lift step device for getting on and off the vehicle, comprising: a lift column standing upright on a vehicle body member; a lift body supported by the lift column and raised and lowered by a movable step lifting drive; The lift step for getting on and off according to claim 1 or 2, further comprising: the movable step swinging between a storage position that is movably supported by a shaft and stands up and a use position that is in a substantially horizontal state. The entrance / exit structure of the bus equipped with the device. 4. The movable lift step is provided between the lift main body and the movable step, and the movable step is swingably driven between the storage position and the use position by a movable step swing device. 4. The entrance / exit structure of a bus equipped with an on / off lift step device according to claim 3, further comprising a step swing device.