JPH0820277A - Vehicle door also serving as wheelchair platform - Google Patents

Abstract

PURPOSE:To enable a wheelchair user to get on/off safely at the time of going up and down a platform and improve safety without reducing an occupant space in a vehicle. CONSTITUTION:A vehicle door serving as a wheelchair platform is provided with a handrail 60 journalled to a platform 20 and erected from the approximately horizontal state to the platform 20, an erecting means 70 for erecting the handrail 60 in the approximately vertical direction when the platform 20 is rotated into the apporoximately horizontal position from the approximately vertical position by a door opening/closing means, and a door locking means 80 for locking a door 10 to a vehicle body in the vertically erected state of the door 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vehicle for a physically handicapped person,
For example, the present invention relates to a wheelchair loading / unloading device for a dedicated bus, and particularly to a wheelchair loading / unloading platform / door that allows simple, quick and safe loading / unloading of a wheelchair and does not reduce the boarding space in the vehicle.

[0002]

2. Description of the Related Art Conventionally, in a vehicle for a physically handicapped person who carries a wheelchair or the like, for example, a dedicated bus or the like, it is time-consuming to manually load and unload the wheelchair and the like, and it is considerably difficult to get on and off. Therefore, the boarding and alighting device of the wheelchair was used. As this boarding / alighting device for a wheelchair, a platform on which a wheelchair is formed, which is formed on the back surface of a door of a vehicle, a door opening / closing means for rotating the platform from a substantially vertical position to a substantially horizontal position to open and close the door, and a door platform are provided. It is known that a door elevating means is provided which descends from a substantially horizontal position toward a ground surface while maintaining a horizontal state.

On this platform, the wheels of the wheelchair are moved so as to prevent the wheelchair from falling from the platform even if the wheelchair is accidentally moved when the door of the wheelchair is lifted up and down with the wheel of the wheelchair placed on the platform. Parallel bars were formed along the edges at both ends. Also, when locking the door, the door was fixed to the vehicle body by operating a manual handle formed on the door (Japanese Patent Application No. 5-20616).

[0004]

However, in the above-mentioned conventional vehicle wheelchair boarding / alighting device for vehicles, since the height of the parallel bar formed at the side end of the platform is low, the wheel of the wheelchair simply falls from the side end. Even if it is possible to prevent this, there is nothing that a passenger in a wheelchair on the platform grabs around by hand when raising and lowering the door, so there is a problem that it is very dangerous when the balance is lost. there were.

Further, even if the height of the parallel bar is set high enough for a passenger to grasp it by hand, when the door is in the vertical state, the parallel bar projects into the space inside the vehicle, and the riding space becomes narrow. There was a point. Therefore, the invention according to claim 1 has been made in view of the problems of the above-described conventional technique, and the purpose thereof is to allow a passenger in a wheelchair to manually move the platform while moving up and down. You can grab the handrail, without losing your balance
An object of the present invention is to provide a wheelchair boarding / exiting platform door for a vehicle that can safely get on and off and does not reduce the boarding space inside the vehicle.

In addition to this, the invention according to claim 2 is provided with door lock means for fixing the door to the vehicle body, so that the door can be opened and closed surely and the safety is further improved. It is intended to provide a door that is also used as a platform for getting on and off.

[0007]

The present invention is to achieve the above-mentioned object, and the contents thereof will be described below with reference to the embodiments shown in the drawings. According to the first aspect of the present invention, the platform (20) is pivotally supported by the platform (20), and the platform (20) is placed in a substantially vertical position by the handrail (60) standing up from a state substantially parallel to the platform (20) and the door opening / closing means (30). And a standing means (70) for standing up the handrail (60) in a substantially vertical direction when the handrail (60) is rotated to a substantially horizontal position.

The invention according to claim 2 is the above-mentioned claim 1.
In addition to the characteristic points described above, a door lock means (80) for fixing the door (10) to the vehicle body in a state where the door (10) is erected vertically is provided.

[0009]

[Operation] Therefore, according to the invention of claim 1,
When opening the door (10), that is, when the platform (20) rotates from a substantially vertical position to a substantially horizontal position, the standing means (70).
Raises the handrail (60) in a substantially vertical direction. And when the platform (20) is in a substantially horizontal position, the handrail (60)
Stands vertically from the platform (20).

Therefore, a passenger in a wheelchair on the platform (20) can grasp the handrail (60) by hand even when the platform (20) is moving up and down and getting on and off the platform (20). This prevents passengers from losing balance and falling from the platform (20).

On the other hand, when the door (10) is closed, that is, when the platform (20) is rotated from a substantially horizontal position to a substantially vertical position, the standing means (70) moves the handrail (60) to the platform (2).
It is positioned approximately horizontally with respect to 0). Therefore, when the platform (20) is in a generally vertical orientation, the handrail (60)
Does not project into the space inside the vehicle and is in a state of being stored parallel to the platform (20), so that the riding space inside the vehicle is not reduced.

As a result, the space inside the vehicle can be effectively utilized, and the riding space can be widened. According to the second aspect of the present invention, the door (10) is provided upright, and the door lock means (80) for fixing the door (10) to the vehicle body is provided, so that the door (10) is securely provided. ) Can be opened and closed, and the door (10) is prevented from being opened accidentally or by some kind of momentum when the user is unwilling to travel or the like, and safety is improved.

[0013]

1 to 17 show an embodiment of the present invention. FIG. 1 is a partial side view of a door in a horizontal position, FIG. 2 is a partial side view of a door in a vertical position, and FIG. 4 is a partial side view of the upright means of the door in the horizontal position, FIG. 4 is a partial side view of the upright means of the door in the vertical position, FIG. 5 is a horizontal sectional view of the protruding piece of the door in the vertical position, and FIG. 7 is a horizontal sectional view of a protruding piece of a door, FIG. 7 is a top view of the door in a vertical position, FIG. 8 is a front view of the door in a horizontal position, FIG. 9 is a front view of the door, and FIG. 10 is a door locking means of the door. Front view, FIG. 11 is a side view thereof, and FIG.
Is a circuit diagram showing a hydraulic circuit of the door, FIG. 13 is a schematic diagram showing a hydraulic device of the door, FIGS. 14 to 17 are side views at each stage of opening and closing the door, and FIG. FIG. 15 is a side view of the door, FIG. 15 is a side view of the door in a state where the platform is positioned on the same horizontal plane as the vehicle floor surface, FIG. 16 is a side view of the door which is grounded while the platform is kept horizontal, and FIG. The side view of the door in which each platform is inclined downward toward the ground contact surface is shown.

In the figure, reference numeral 10 denotes a vehicle wheelchair platform entry / exit door according to an embodiment of the present invention. The door 10 is attached to the rear portion of the vehicle body of a dedicated bus for physically handicapped persons. The outer surface of the door 10 forms the outer surface of the vehicle body, and the inner surface of the door 10 forms the inner surface of the vehicle body. Therefore, since the door 10 constitutes a part of the vehicle body, it is made of the same material as the vehicle body.

As shown in FIG. 8, the door 10 has a square outer shape, and has a flat platform 20 on the back surface thereof on which a wheelchair is placed and a substantially vertical position of the platform 20. A door opening / closing means 30 for opening and closing the door 10 by rotating to a horizontal position, and a door elevating means 40 for lowering the platform 20 of the door 10 from the substantially horizontal position toward the ground contact surface while maintaining the horizontal state are provided. .

The door 10 has a parallel bar 50 formed along one side edge thereof, as shown in FIGS.
A handrail 60 that is formed along the other side edge, is pivotally supported by the platform 20, and stands up from a state substantially parallel to it, and when the platform 20 is rotated from a substantially vertical position to a substantially horizontal position by the door opening / closing means 30. Further, there are provided upright means 70 for vertically raising the handrail 60 and door lock means 80 for fixing the door 10 to the vehicle body in a state in which the door 10 is vertically upright.

As shown in FIGS. 7 and 8, the platform 20 stands up substantially vertically during lifting and lowering so that the wheel stopper of the wheelchair can be prevented from moving.
The tip plate 22 is a rectangular plate at its tip and is bridged between the road surface and the platform 20 to eliminate the step between them, and in the vicinity of the tip, it is possible to turn on / off various operations. A foot switch 100 for controlling the off state is arranged.

Further, since the platform 20 is a portion on which a wheelchair is loaded, it is formed so as to have a strength capable of withstanding the load of a wheelchair, a wheelchair passenger and an attendant, and a door. When 10 is in the vertical state, it constitutes the inner surface of the vehicle body. The car stop plate 21 is, as shown in FIGS.
A platform 20 is rotatably supported on the front surface side of the platform 20 about its base end, and is connected to a car stop cylinder 23 that pushes a part of the vicinity of the base end side to raise it.

As shown in FIG. 1, the car stop cylinder 23 has a car stop cylinder rod 24 which advances and retreats from the inside of the main body thereof and whose tip is connected to a part of the car stop plate 21 near the base end side. ing. As shown in FIG. 8, the foot switch 100 includes a car stop lowering foot switch 10 located on the left side of the car stop plate 21.
1, an ascending foot switch 102 and a descending foot switch 103 located substantially in the vicinity of the center of the car stop plate 21, and a main foot switch 104 located to the right of the car stop plate 21.
And have.

As shown in FIGS. 14 to 17, the door opening / closing means 30 is located below the door 10, the door 10 is rotatably supported, and the sub-plates are vertically arranged facing each other. 33 and an open / close cylinder 31 fixed to the bottom of the door 10.
And an opening and closing cylinder rod 32 which is moved forward and backward from the opening and closing cylinder 31 by a hydraulic mechanism and whose one end is rotatably locked to a part of the sub-plate 33.

As shown in FIGS. 14 to 17, the door raising / lowering means 40 is arranged parallel to an axle, a vehicle body floor, etc. (not shown), and has a main shaft 41 rotatably formed, The main shaft 41 is vertically fixed to both ends of the main shaft 41 so as to face each other, and one end is fixed to the main plate 42 that rotates together with the main shaft 41, and the other end is rotatably locked to the sub-plate 33. Main arm 44, one end of which is rotatably locked to the vehicle body, and the other end of which is rotatably locked to the sub-plate 33, and an elevating cylinder 46 that rotates the main shaft 41 ( FIG. 13).

Then, as shown in FIGS. 14 to 17, a fulcrum (a) is formed by the main shaft 41, and the fulcrum (b) is formed by rotatably locking the sub arm 45 to the vehicle body. , The sub arm 45 is rotatably locked to the sub plate 33 to form a fulcrum (c), and the main arm 44 is rotatably locked to the sub plate 33 to form a fulcrum (d). The main arm 44 is rotatably locked to the main plate 42 to form a fulcrum (h).

The distance between the fulcrums (a) and (b) and the distance between the fulcrums (c) and (d) are substantially the same, and the distance between the fulcrums (a) and (d) and the fulcrum (b) ( (C) is formed so that the distance between them is substantially the same. That is, the fulcrums (a), (b), (c), and (d) are configured so that the vertex positions of the substantially parallelogram are formed as a whole, and the lengths of the two pairs of opposing links are substantially equal to each other. And forms a parallel movement mechanism when the door 10 is moved up and down.

Although not shown, the main arm 44 is
The vicinity of the center and the main plate 42 are connected to the main plate 42 by using a piston cylinder (not shown) that contracts from a predetermined length. Therefore, even if the main plate 42 rotates about the main shaft 41 in the direction of lifting the door 10, the main arm 44 does not
The main arm 44 is regulated so as not to rotate downward about a fulcrum (h) with 42, and the main arm 44 is formed so as to rotate together with the main plate 42. And the main arm
44 is the contraction of the piston cylinder (not shown)
It is configured to rotate only upwards about a fulcrum (h).

As shown in FIGS. 7 and 8, the parallel bar 50 is made of a cylindrical metal pipe, and its height is set so that the wheel of the wheelchair abuts on it. The handrail 60, as shown in FIGS. 1 to 8, is similar to the parallel bar 50,
It consists of a cylindrical metal pipe and is framed in a rectangular shape. And, this handrail 60, as shown in FIGS.
In a state of standing in a substantially vertical direction, the uppermost horizontal bar 61 arranged horizontally, and the lowermost horizontal bar 61 arranged horizontally,
A horizontally arranged lower horizontal bar 62, a horizontally arranged intermediate horizontal bar 63 in the middle between them, and a left support column that supports the horizontal bars 61 to 63 at their left end portions. 64, the right support columns 65 for supporting the horizontal bars 61 to 63 at the right end portions thereof, and the horizontal bars 61 to 63 and the support columns 64, 65.
Connecting part 66 for connecting, a support part 67 for rotatably supporting the lower horizontal bar 62 as a rotation center axis, and a right support column 6
It has a projecting piece 66 that is fixed to the connecting portion 66 at the lower end of the 5, protrudes obliquely downward, and that rotates with the handrail 60 as the handrail 60 rotates.

As shown in FIGS. 1 to 8, the standing means 70 has one end rotatably locked to the sub-plate 33,
A connecting rod 71 formed to extend inside the door 10, and a connecting member 72 whose one end is rotatably locked to the connecting rod 71 and rotatably locked to the door 10 at the center thereof.
And an extruding rod 73 whose one end is rotatably fixed to the projecting piece 66 of the handrail 60 and whose other end is rotatably locked to the connecting member 72.

As shown in FIGS. 3 and 4, one end of the connecting member 72 is rotatably locked to the connecting rod 71, and the other end thereof is rotatably locked to the lower portion of the door 10. The external shape is an I-shaped piece 75 formed in an I-shape, one end of which is fixed to the I-shaped piece 75, and the other end is a push rod 73.
It has an L-shaped piece 76 which is rotatably locked to and has an L-shaped outer shape.

The connecting rod 71 is rotatably locked to the sub-plate 33 to form a fulcrum (e),
The connecting rod 71 and the connecting member 72 are rotatably locked to form a fulcrum (f), and the connecting member 72 is rotatably locked to the door 10 at its center so that the supporting point ( ) Has been formed. That is, the fulcrum (c) (e) (f)
By (g), it is configured so as to be at the apex position of the quadrangle as a whole, and constitutes a link mechanism when the door 10 is moved up and down.

As shown in FIGS. 9 to 11, the door lock means 80 is fixed to the vehicle body, and is a columnar fixing pin 81 positioned in the horizontal direction, and can be hooked on the fixing pin 81. Then, a hook-shaped member 82 having a hook-shaped tip, a rotary shaft 83 to which the base ends of the hook-shaped member 82 are fixed at both ends thereof, and a rotary shaft 83 at the center of the rotary shaft 83. Rotating lever 84 protruding vertically from the axial direction of
A spring 85 that is locked to the tip of the rotary lever 84 and that applies a biasing force that pulls down the tip of the hook-shaped member 82 in the direction of lowering it, that is, the direction of bringing the tip of the hook-shaped member 82 into contact with the fixing pin 81. And a solenoid 86 that pulls up the tip of the rotary lever 84 in an upward direction against the biasing force of the spring 85, that is, pulls the tip of the hook-shaped member 82 away from the fixing pin 81, and the tip of the hook-shaped member 82. Has a sensor 87 that determines whether or not a locked state is present.

As shown in FIGS. 1, 2, and 9, the solenoid 86 includes a solenoid rod 88 that advances and retracts from its main body,
The connecting rod 89 has one end locked to the tip of the solenoid rod 88 and the other end locked to the tip of the rotary lever 84. The hook-shaped member 82, as shown in FIG.
Hole 91 having an inner diameter smaller than the outer diameter of the hook, an inclined portion 95 having an inclined surface on the outer surface side of the hook-shaped tip, and the inclined portion 95.
And a throat portion 96 corresponding to a hook-shaped throat is formed on the opposite side.

As shown in FIG. 10, the rotary shaft 83 has tapered portions 92 formed at both ends thereof in a tapered shape with a diameter decreasing toward the tip, and the tip thereof is arranged in order from the outside of the hook-shaped member 82. It has the inserted washer 93 and the bolt 94. That is, the holes 91 of the hook-shaped member 82 are passed through the tapered portions 92 at both ends of the rotary shaft 83, and the washer 93 and the bolt 94 are screwed from the outside thereof and fixed.

As shown in FIGS. 12 and 13, the hydraulic circuit 110 of the door 10 according to the present embodiment is, as shown in FIGS.
A hydraulic control unit 130 including 120 and various hydraulic control valves for controlling the direction and flow rate of hydraulic pressure from the power unit 120.
And, by converting the fluid energy of oil from the hydraulic control unit 130 into mechanical energy, the opening / closing cylinder 31,
An actuator section 140 that performs work by using the lifting cylinder 46 and the car stop cylinder 23, a control circuit 150 that electrically controls various devices of a hydraulic circuit, and the control circuit 150.
An operation switch 160 for externally operating the control circuit 150 from the outside and a foot switch 100 on which the passenger on the platform 20 of the door 10 can operate the control circuit 150 with his / her feet.

The power unit 120 is shown in FIGS.
As shown in FIG. 4, an electric motor 121 that applies a rotational driving force, a hydraulic pump 122 that converts the rotational driving force from the electric motor 121 into hydraulic fluid energy, and a pressure that keeps the pressure in the hydraulic circuit below a predetermined value. It has a control valve 123 and an electromagnetic flow control valve 124. The hydraulic control unit 130 is shown in FIG.
As shown in FIG. 13, in response to a signal from the control circuit 150, the oil flow path is changed to the power unit 120 (P port) and the lifting cylinder 23 (A port), or the power unit 120.
(P port) and opening / closing cylinder 31 (B port), a direction control valve 131 that can be switched by electromagnetic force in the direction of the flow path, and this direction control valve 131 and opening / closing cylinder
There are two flow rate control valves 132, 13 that are located between 31 and can change the oil flow rate depending on whether the door 10 is open or closed, that is, the oil flow rate can be switched depending on the oil flow direction.
3 is located between the power unit 120 and the car stop cylinder 23 and controls the oil flow rate from the power unit 120.
50 and an electromagnetic type flow control valve 134 that can be changed electromagnetically.

As shown in FIG. 12, the operation switch 160 includes a key switch 161 for making all the operation switches operable, a raising switch 162 for raising the door 10 by the raising and lowering cylinder 46, and a raising and lowering cylinder for the door 10. It has a lowering switch 163 for lowering by 46 and an opening / closing switch 164 for opening / closing the door 10 by the opening / closing cylinder 31 in combination with the raising switch 162 or the lowering switch 163.

As described above with reference to FIG. 8, the foot switch 100 is arranged on the platform 20 at a position where it can be operated by the foot of the passenger. As shown in FIG. 12, the foot switch 100 is connected to the control circuit 150. The main foot switch that raises and lowers the door 10 by using it together with other switches.
104, the door 10 connected to the control circuit 150
The raising foot switch 102 that is raised by 46 and the control circuit 150 are connected, and the lowering foot switch 103 that lowers the door 10 by the raising and lowering cylinder 46 and the control circuit 150 are connected to return the standing car stop plate 21 to the horizontal state. The vehicle stop lowering foot switch 101 is set to.

Next, as shown in FIGS. 14 and 15, the opening / closing operation of the door 10 by the door opening / closing means 30 will be described. First, as shown in FIG. 14, when the door 10 is closed to the vehicle body, that is, the platform 20 of the door 10 is vertical, the lower switch 1 is pushed while pressing the open / close switch 164.
When 63 is pushed and held, the door lock means 80 releases the locked state, the P port and the B port of the directional control valve 131 are connected, and the open / close cylinder 31 is in a hydraulic-free no-load state.

As a result, the door 10 becomes rotatable about the fulcrum (c) on the sub plate 33. that time,
Since the weight of the door 10 is located on the outer side of the vehicle from the fulcrum (c), the weight of the door 10 causes the door 10 to rotate outward about the fulcrum (c). As shown in FIG. 12, when the open / close cylinder rod 32 locked to the sub-plate 33 is pushed into the open / close cylinder 31, the oil pushed out from the open / close cylinder 31 passes through the flow control valve 132 as shown in FIG. The resistance can be adjusted.

Then, as shown in FIG. 15, when the door 10 is rotated to the horizontal state, the end face of the door 10 on the base end side is brought into contact with the end face of the sub plate 33 to maintain the horizontal state. Next, to return the door 10 from the horizontal state to the vertical state, as shown in FIG. 12, while pushing the open / close switch 164, the raising switch 162 is pushed and held. As a result, FIG.
As shown in FIG. 5, the directional control valve 131 is connected to the P port and the B port, and the oil from the hydraulic pump 122 is flow control valve 133.
Through the inside of the open / close cylinder 31 and push the open / close cylinder rod 32 outward.

As shown in FIGS. 14 and 15, the door cylinder 10 is rotated about the fulcrum (c) from the horizontal state to the vertical state by extending the opening / closing cylinder rod 32, and the rear portion of the vehicle is closed. Becomes Next, FIGS.
As shown in FIG. 7, the raising / lowering operation of the door 10 by the door raising / lowering means 40 will be described.

In the horizontal state of the door 10 according to this embodiment,
As described above, the raising / lowering operation is performed by the parallel movement mechanism of the fulcrums (a), (b), (c), and (d) which are substantially parallelograms. First, when the door 10 is moved in parallel from the position in which it is grounded horizontally (FIG. 16) to the position on the vehicle floor surface (FIG. 15) in that state and lifted, as shown in FIG. Then, by operating the operation switch 160 or the foot switch 100, the control circuit 150 activates the directional control valve 131 of the hydraulic control unit 130 to connect the A port and the P port.

The hydraulic pump 1 of the power unit 120
The oil from 22 is injected into the lifting cylinder 46, and the lifting cylinder 46 is loaded. Then, the elevating cylinder rod (not shown) extends from the elevating cylinder (FIGS. 12 and 13) so that the main shaft 41 moves to the position shown in FIG.
As shown in FIGS. 5 and 16, it rotates clockwise, and the main plates 42 fixed to both ends of the main shaft 41 also rotate.

Further, as described above, the length of the piston cylinder (not shown) of the main arm 44 connected to the main plate 42 is also restricted by the piston cylinder (not shown), and therefore the same. The main shaft 41 is rotated together with the main shaft 41 in the direction of lifting the door 10. When the main arm 44 rotates about the main shaft 41 and the fulcrum (d) rotates about the fulcrum (a), the sub arm 45 also rotates about the fulcrum (b). That is, the fulcrum (c) also rotates around the fulcrum (b).

At this time, since the fulcrum points (a) and (b) are positioned in the vertical direction due to the characteristics of the parallel motion mechanism, the fulcrum points (c) and (ii) always move while maintaining the vertical state. . Then, in the door elevating means 40, the total weight on the door 10 and the platform 20 causes the main arm 44 to generate a compressive force and the sub-arm 45 to generate a tensile force through the fulcrums (c) and (d), respectively. It can be kept constant.

On the other hand, the door 10 is positioned on the vehicle floor (FIG. 15).
To the position (FIG. 16) where it is grounded horizontally, the control circuit 150 operates the operation switch 160 or the foot switch 100 to move the A port and the P port of the directional control valve 131. The connection is maintained as it is, the electric motor 121 and the hydraulic pump 122 are turned off, and the electromagnetic flow control valve 124 is opened.

As a result, the elevating cylinder 46 is placed in a hydraulic-free, unloaded state, and the load of the door 10 causes the oil in the elevating cylinder 46 to return to the inside of the power unit 120, which is the reverse operation of lifting the door 10. At this time, the moving speed of the door 10 can be adjusted by changing the flow rate of the electromagnetic flow control valve 124 (FIG. 12).

With the above-described operation, as shown in FIGS. 15 and 16, the platform 20 on which the wheelchair is mounted can be moved up and down while maintaining the horizontal state between the floor surface of the vehicle body and the road surface. . Next, the platform
The door elevating / lowering means 30 operates as follows from the time the ground 20 is in contact with the ground to the downward inclination toward the ground contact surface.

First, while the platform 20 is descending, the fulcrum (c) and the fulcrum (d) are parallel to the fulcrum (b) and the fulcrum (a) due to the characteristics of the parallel motion mechanism as described above. Located in. At that time, since the fulcrum (b) and the fulcrum (a) are in the vertical position, the fulcrum (c) and the fulcrum (d) are also always in the vertical position, and the door 10 is always in a fixed direction.
That is, the platform 20 is held so as to be horizontal.

However, when the fulcrum (d) touches the ground, the weight of the door 10 causes the door 10 to move around the fulcrum (c).
A rotational moment is generated in the direction inclining downward. Then, due to this rotation moment, the main arm 44 is pushed toward the main plate 42 side.
The oil inside continues to drain and the main plate 42 rotates counterclockwise.

As a result, the piston cylinder (not shown) connected between the vicinity of the center of the main arm 44 and the main plate 42 contracts, and the main arm 44 moves clockwise with the fulcrum (h) as the center. Rotate to. Therefore, the rotation of the main plate 42 causes the main arm 44 to
It is pushed under the main plate 42.

Therefore, the fulcrum (d) slightly shifts to the main shaft 41 side from the vertical position below the fulcrum (c),
As shown in FIG. 17, the sub-plate 33 is in a state in which it slightly rotates counterclockwise from the state in which the sub-plate 33 is being raised and lowered. Therefore, the platform 20, which is connected to the sub-plate 33 and is kept horizontal, has a tip portion inclined downward from the horizontal state toward the ground contact surface.

On the other hand, when the platform 20 is lifted, that is, when the platform 20 returns from the state in which it tilts toward the ground plane (FIG. 17) to the horizontal state (FIG. 16), the door lifting means 30 operates as described above. Performs the reverse operation. First,
When the elevating cylinder 46 is loaded and extends, the main shaft 41 and the main plate 42 rotate.

For this reason, the piston cylinder (not shown) that connects the vicinity of the center of the main arm 44 and the main plate 42 extends from the expanded / contracted state to the state in which it is regulated to a predetermined length, and the main arm 44 becomes a fulcrum. It returns to the state where it is restricted so as not to rotate counterclockwise around (h).
Therefore, the door 10 will not rise unless the platform 20 returns to the horizontal state. On the contrary, the platform 20 will remain horizontal unless the door 10 is grounded.

Next, as shown in FIGS.
The operation of the handrail 60 by the 70 will be described. As described above, the operation of the handrail 60 by the standing means 70 is as shown in FIGS.
As shown in FIG. 5, the linkage is performed by a quadrangle having fulcrums (c), (e), (e), and (g).

First, as shown in FIGS. 1, 3, 5, and 8, the door
With 10 open from the vehicle body, platform
When 20 is held in the horizontal state, the connecting rod 71 pushes the I-shaped piece 75 of the connecting member 72, and the fulcrum (f) is pushed horizontally toward the tip side of the door 10. Therefore, as shown in FIG. 3, the connecting member 72 rotates clockwise around the fulcrum (g).

Since the I-shaped piece 75 and the L-shaped piece 76 are connected and fixed to each other by a fulcrum (g), the tip of the L-shaped piece 76 also turns clockwise as shown in FIG. Push rod that rotates in the direction and is rotatably locked to the tip of the L-shaped piece 76.
One end of 73 is pulled into the door 10. At that time, since the other end of the push rod 76 is rotatably locked to the tip of the protruding piece 66 of the handrail 60, as shown in FIGS.
The push rod 73 pulls the tip of the protruding piece 66 downward to near the surface of the door 10.

Therefore, as shown in FIG. 5, the handrail 60
Is in a state of standing upright with respect to the surface of the door 10 about the lower horizontal bar 62. Because of this, the platform
When the 20 is in a substantially horizontal position, a passenger in a wheelchair on the platform 20 can grab the handrail 60 by hand when the platform 20 is raised and lowered and when the platform 20 is getting on and off.

As a result, it is possible to prevent the passenger or the like from losing balance and falling from the platform 20. On the other hand, as shown in FIGS.
When the door 20 is closed to the vehicle body and the platform 20 is held vertically, the connecting rod 71 is connected to the connecting member 72.
The I-shaped piece 75 is pulled toward the sub-plate 33 side, and the fulcrum (f) is pulled vertically downward toward the sub-plate 33 side.

For this reason, as shown in FIG.
Rotates about the fulcrum (g) in the counterclockwise direction. Since the I-shaped piece 75 and the L-shaped piece 76 are connected and fixed at the fulcrum (g), the tip of the L-shaped piece 76 also moves in the counterclockwise direction as shown in FIG. It is rotated, and one end of the pushing rod 73 rotatably locked to the tip of the L-shaped piece 76 is pushed into the outside of the door 10.

At this time, since the other end of the push rod 76 is rotatably locked to the tip of the protruding piece 66 of the handrail 60, as shown in FIG.
As shown in FIG. 6, the push rod 73 pushes the tip of the protruding piece 66 from the surface of the door 10 in the horizontal direction. Therefore, as shown in FIG. 6, the handrail 60 has a door with the lower horizontal bar 62 as the center.
It will be parallel to the surface of 10.

As a result, when the platform 20 is in a substantially vertical direction, the handrail 60 does not project into the space inside the vehicle and is in a state of being stored in parallel to the platform 20, thus reducing the riding space inside the vehicle. Therefore, the space inside the vehicle can be effectively utilized. Next, the operation of the lock mechanism of the door 10 using the door lock means 80 will be described with reference to FIGS.

First, when the door lock means 80 maintains the locked state, as shown in FIG. 11, the door 10 is vertical,
It is in the closed position in the vehicle body, and the solenoid 86 is in a hydraulic-free, unloaded state. At that time, the spring 95 is
To pull 84 downward, the rotary shaft 83 to which the rotary lever 84 is fixed rotates counterclockwise.

Therefore, as shown in FIG. 11, the throat portion 96 of the hook-shaped member 82 fixed to both ends of the rotating shaft 83 is caught by the fixing pin 81 and is biased counterclockwise about the rotating shaft 83. Then, the fixing pin 81 is pressed. This allows
Even if the door 10 tries to move in the opening direction due to a malfunction, the throat portion 96 of the hook-shaped member 82 is caught by the fixing pin 81 and is prevented from opening. In this state, the locked state is maintained.

Next, when the locked state of the door lock means 80 is released, as shown in FIG. 9, the electromagnetic force of the solenoid 86 causes the solenoid rod 88 to move inside the solenoid 86 against the biasing force of the spring 85. Pull in. Then, the connecting rod 89 locked to the tip of the solenoid rod 88 is pulled toward the tip of the door 10, and the rotary lever 84 locked to the tip of the connecting rod 89 is pulled toward the tip of the door 10.

As a result, the rotary lever 84 rotates clockwise around the rotary shaft 83, and the hook-shaped member 82 also rotates around the rotary shaft 83, and the throat of the hook-shaped member 82 rotates. 96 comes off the fixing pin 81. In this state, the lock state of the door lock means 80 is released, and the door lock means 80 is unlocked.

At this time, the door 10 is centered on the fulcrum (C),
The door 10 can be opened by rotating and moving in the horizontal direction. Further, when shifting from the unlocked state to the locked state, the door 10 is directly closed to the vehicle body while the solenoid 86 is in a hydraulic-free and unloaded state. At that time, FIG.
As shown in FIG. 7, the outside of the tip of the hook-shaped member 82 has an inclined portion 95 having an inclined outer peripheral surface facing downward, so that the fixing pin 81 resists the biasing force of the spring 85 and the inclined portion 95. A hook-shaped member 82 is pushed upward along.

Further, when the door 10 is closed, the fixing pin 81 is
The moment you cross the slope 95, with a clicking sound,
The fixing pin 81 enters the throat 96 and enters the above-mentioned locked state. As shown in FIGS. 10 and 11, the sensor 87 is arranged below the hook-shaped member 82. Therefore, when the sensor 87 does not react when the solenoid 86 is in a hydraulic-free no-load state, the hook-shaped member 82 It means a locked state where the member 82 is hooked by the fixing pin 81, and when the sensor 87 reacts in the hydraulic 86 free state of the hydraulic pressure, the hook-shaped member 82 is not locked by the fixing pin 81. Means

As a result, in the driver's seat of the car, the door 10
It is possible to confirm whether or not the door is securely locked, prevent accidents due to poor locking of the door 10 or incorrect locking operation, and improve the safety of opening and closing the door 10. it can. Next, the opening / closing operation of the wheel stopper plate 21 of the wheelchair will be described.

First, when the car stop plate 21 is erected, as shown in FIG. 12, the oil from the hydraulic pump 122 flows into the car stop cylinder 23 through the electromagnetic flow control valve 134, and the oil of the car stop cylinder 23 is increased. A car stop cylinder rod 24 extends from the main body. Then, as shown in FIG. 1, the car stop cylinder rod 24 pushes the lower part of the car stop plate 21 in the vicinity of the rotation axis into the front end side of the door 10.

Therefore, the car stop plate 21 rotates about the rotation axis of the base end, and the car stop plate 21 maintains a state of standing upright from the surface of the platform 20 in the vertical diagonal direction. As a result, even if the wheelchair on the platform 20 tries to move toward the front end of the door 10 while the door 10 is moving up and down, the wheel of the wheelchair is caught by the car stop plate 21, the movement is blocked, and accidents such as falling are prevented in advance. be able to.

On the other hand, when the car stop plate 21 is returned to the original state of being flush with the platform 20, the car stop cylinder 23 is brought into a hydraulic-free, unloaded state. Then, due to the weight of the car stop plate 21, it can return to its original state about the rotation axis of the base end thereof. This allows the wheelchair to move freely between the road surface and the platform 20.

Next, the operation of the operation switch 160 and the foot switch 90 of the wheelchair access platform / door 10 according to this embodiment will be described. First, as shown in FIG. 14, with the door 10 closed, the key switch 161 (FIG. 12) of the operation switch 160 attached to the vehicle body is turned on. As a result, all the operation switches 160 and the like become operable. When the key switch 161 is in the off state, none of the operation switches 160 and the foot switch 100 can be operated. that is,
In order to prevent accidents such as accidentally occurring by pressing the operation switch 160, etc. when the vehicle is not in use, such as when it is in use, the operation switch 160 is turned on, and the door 10 is opened. It is a thing.

Next, as shown in FIG. 12, while holding down the open / close switch 164 of the operation switch 160, the lowering switch 16
Press 3 and hold. As a result, the door lock means 80 releases the locked state, the door 10 opens from the vertical direction to the horizontal direction by its own weight, and the platform 20 becomes flush with the floor surface of the vehicle body as shown in FIG. .

At this time, the car stop cylinder 23 is put in a loaded state, and the car stop plate 21 at the tip of the door 10 is erected. Further, as shown in FIG. 2, when the platform 20 is in the vertical state, the handrail 60 positioned substantially parallel to the surface of the platform 20 has a lower horizontal bar 62 (FIG. 1) when the door 10 rotates 90 degrees. Centered around the platform
In the horizontal state, the platform 20 gradually rotates in a direction perpendicular to the plane of the platform 20, and stands up in a direction substantially perpendicular to the plane of the platform 20, as shown in FIG.

Next, the down switch 1 of the operation switch 160
Press and hold 63 or platform 20
Main passenger with foot switch 90 on top passenger
Step on both 104 and the descending footswitch 103. By performing any one of these operations, the door 10 is lowered by the door raising / lowering means 40 from a state of being flush with the floor surface of the vehicle body as shown in FIG. It will be in a grounded state as shown in.

Then, as shown in FIG. 16, after the lower part of the door 10 is grounded to the road surface, the door elevating means 40 causes the front end of the door 10 to incline downward by the dead weight of the door 10, as shown in FIG. To do. Next, while pressing the open / close switch 164 of the operation switch 160, the down switch 163 is pressed and held, or the occupant on the platform 20 is pressed by the foot switch 90.
Step on the car stop lowering foot switch 101.

As a result, the car stop cylinder 23 is in a hydraulic-free, unloaded state, and the car stop plate 21 rotates due to its own weight and is positioned on the same plane as the platform 20. In this state, the wheelchair can move between the platform 20 and the road surface.

It should be noted that lowering the car stop plate 21 is set so that the platform 20 does not operate above a predetermined height above the ground in consideration of safety. Next, the up switch 162 of the operation switch 160 is pushed and held, or both the main foot switch 104 and the up foot switch 102 of the foot switch 100 are stepped on.

By any of these operations, the car stop cylinder 23 is put into a load state, and the car stop plate 21 rotates via the car stop cylinder rod 24 and stands up obliquely upward. Further, the door elevating means 40 is operated, and as shown in FIG.
As shown in FIG. 16, from the state in which the door 10 is inclined downward, the front end side of the door 10 is lifted around the fulcrum (C),
As shown in, the platform 20 is in parallel with the floor surface of the vehicle body while being in contact with the road surface.

After that, the door 10 rises while maintaining the parallel state, and as shown in FIG. 15, stops in a state where it is flush with the floor surface of the vehicle body. It should be noted that the operation switch 160 and the foot switch 100 can be configured such that a series of operations are performed by pressing each switch once, but from the viewpoint of safety, each cylinder can be operated only by continuously pressing each switch. Etc. are set to be operable and set to stop immediately when the switch is released.

Next, the open / close switch 1 of the operation switch 160
While pressing 64, press and hold the up switch 162.
As a result, the door 10 rotates about the fulcrum (c) in the direction of lifting the tip of the door 10, and the platform 20 shifts from the horizontal state to the vertical state and fits into the rear portion of the vehicle body.

When the door 10 is rotated by 90 degrees, the handrail that was standing substantially vertically when the platform 20 was in the horizontal state gradually moved from the lower horizontal bar 62 (FIG. 1) to the surface of the platform 20. When the platform 20 is in a vertical state, it is positioned substantially parallel to the surface of the platform 20. Then, when the door 10 completely fits in the rear part of the vehicle body, the throat 96 of the hook-shaped member 82 of the door lock means 80 is accompanied by a clicking sound.
The fixing pin 81 enters into and is locked.

Then, after confirming the locked state by the sensor 87, the key switch 161 of the operation switch 160 is turned off. This completes the operation of the door 10. Although the mounting position of the door 10 according to the present embodiment to the vehicle body is set to the rear surface of the vehicle body as in the present embodiment, the mounting position is not particularly limited to the rear surface, To the extent that it does not affect the running function of the vehicle,
The mounting position can be set freely. For example,
It can be mounted on the side surface of the vehicle body between the wheel bases. Also, depending on the size of the bus and the position of the normal entrance / exit, it can be installed on the side surface of the front part of the front wheel or the side surface of the rear part of the rear wheel.

[0083]

Since the present invention is constituted as described above, it has the following effects. Claim 1
According to the described invention, even when moving up and down the platform, an occupant of the wheelchair can grab the handrail by hand,
You can safely get on and off without losing your balance,
(EN) It is possible to provide a platform / door for a wheelchair boarding / unloading platform for a vehicle that does not reduce the boarding space inside the vehicle.

In addition to this, according to the invention of claim 2, the door lock means for fixing the door to the vehicle body is provided, so that the door can be opened and closed surely and the safety is further improved. It is possible to provide a door that is also used as a platform for getting on and off the wheelchair.

[Brief description of drawings]

FIG. 1 is a partial side view showing a door in a horizontal position.

FIG. 2 is a partial side view showing the door in a vertical position.

FIG. 3 is a partial side view showing the uprighting means of the door in the horizontal position.

FIG. 4 is a partial side view showing the uprighting means of the door in the vertical position.

FIG. 5 is a horizontal sectional view showing a protruding piece of the door in a vertical position.

FIG. 6 is a horizontal sectional view showing a protruding piece of the door in a horizontal position.

FIG. 7 is a top view showing the door in a vertical position.

FIG. 8 is a front view showing the door in a horizontal position.

FIG. 9 is a front view showing a door.

FIG. 10 is a front view showing a door locking means of the door.

FIG. 11 is a side view thereof.

FIG. 12 is a circuit diagram showing a hydraulic circuit of a door.

FIG. 13 is a schematic view showing a hydraulic device for a door.

FIG. 14 is a side view showing the door in a closed state.

FIG. 15 is a side view showing the door in a state where the platform is located on the same horizontal plane as the vehicle floor surface.

FIG. 16: With the platform held horizontal,
It is a side view which shows the door grounded on the road surface.

FIG. 17 is a side view showing the door in which the platform is inclined downward toward the ground contact surface.

[Explanation of symbols]

10 Door 20 Platform 30 Door opening / closing means 40 Door lifting means 60 Handrail 70 Standing means 80 Door locking means 100 Foot switch 110 Hydraulic circuit 120 Power unit 130 Hydraulic control section 140 Actuator section 150 Control circuit 160 Operation switch

Claims (2)

[Claims] 1. A platform on which a wheelchair is formed, which is formed on the back surface of a door of a vehicle, a door opening / closing means for rotating the platform from a substantially vertical position to a substantially horizontal position to open and close the door, and a platform of the door for substantially horizontal position. In a wheelchair loading / unloading device for a vehicle for a physically handicapped person, which is provided with a door elevating means for descending from a ground surface toward a ground surface while maintaining a horizontal state, a handrail that is pivotally supported by the platform and stands up in a state substantially parallel to the platform. And a standing means for standing up the handrail in a substantially vertical direction when the platform is rotated from the substantially vertical position to the substantially horizontal position by the door opening / closing means. Dual-purpose door. 2. The door for a wheelchair platform for a vehicle according to claim 1, further comprising door lock means for fixing the door to the vehicle body in a state where the door is vertically erected.