JP2710296B2 - lift device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for safely getting a disabled person in a wheelchair on and off a vehicle such as a bus.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Application Laid-Open No. 55-1207, a lift platform used for an entrance of a bus or the like has a plurality of flat plates hinged thereto. The wheelchair storage area has been increased. On the other hand, when walking on and off, a plurality of flat plates are bent to form a staircase, and the elevator is also used as a step, and the depth is reduced to make the entrance and exit as small as possible so that the floor area of the bus can be increased.

[0003]

However, the above structure has a drawback that a large number of driving devices such as cylinders are required to bend a plurality of flat plates, and the structure becomes complicated. Also, since the elevator is bent and used as a step, there is a limit to reducing the depth of the entrance,
It is difficult to secure a larger floor area.

It is an object of the present invention to provide a lifting apparatus which can reduce the depth of the entrance with a simple structure by using a plurality of stages of the lifting platform.

[0005]

According to the present invention, fixed columns are fixedly mounted on the vehicle body on the left and right of the entrance of the vehicle, and the elevator can be moved up and down from the floor surface to the ground along the fixed columns. In the lifting device capable of being fixed at an intermediate position, the lifting platform is a main lifting platform horizontally held at the lower end of the lifting column, and an intermediate frame stored in the main lifting platform and supported so as to project from the main lifting platform. If, axially supported and the auxiliary lifting platform which is overhanging rotatably supported from the intermediate frame, the left and right ends of the auxiliary lifting platform while being stored in the main lifting platform
Pantograph link at the base of the main platform
The present invention is characterized by comprising an overhanging device that can be folded by a cylinder .

[0006]

[Function] When getting on and off in a wheelchair, the auxiliary elevator stored in the main elevator protrudes from the main elevator to increase the area of the elevator. At this time, the auxiliary elevator is supported by the intermediate frame, and the intermediate frame is supported by the main elevator, so that the auxiliary elevator can be extended more than the main elevator.

In a state where the auxiliary elevator is overhanging, the operator rides on the elevator with a wheelchair and lifts the elevator to get on and off the vehicle. In the case of getting on and off while walking, the auxiliary elevator and the intermediate frame are stored in the main elevator, and the elevator is fixed at an intermediate position in the middle of elevating and is also used as a step, and the elevator is walked on and off.

At this time, the height of the lift can be reduced to the same depth as the main lift.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Reference numeral 1 denotes a bus, which is provided with a door 3 for closing each entrance 2 in front of, inside and behind the side of the bus 1, and the front door 3 is folded and stored in one side of the entrance 2 in a folded state. The rear door 3 is open and stored on the left and right sides of the entrance 2.

Reference numeral 4 denotes a seat provided on the floor 5. An elevator 6 of the present invention is provided at the center entrance 2 and will be described below with reference to FIGS. FIG. 3 is a side view of the lifting device 6. Reference numeral 7 denotes a fixed support that is fixedly provided upright on the left and right sides of the vehicle body 8 at the entrance 2 and has a rectangular cross section in a box shape.

An elevating column 8 shorter than the fixed column 7 is provided in the fixed column 7 so as to protrude below the lower end of the fixed column 7, and the elevating column 8 is mounted by an elevating cylinder 9 provided in the fixed column 7. It is designed to be raised and lowered. An elevating table 11 is fixed to a lower end of the elevating column 8 via a bracket 10 in a horizontal state.

A vertically long notch groove 12 is formed on the front surface of the fixed column 7 so that the bracket 10 can move. As a result, the lift 11 can move up and down between the floor 5 and the ground. A step device 14 is provided in a gap 13 between the base end of the lift 11 and the vehicle body 81. The step device 14 can be folded and stored in the gap 13 by turning upward, and can be folded and stored in the gap 13 by turning downward. A step is formed upward.

As shown in FIGS. 7 to 10, the step device 14 fixes the mounting member 15 to the vehicle body 81, attaches a flat step member 16 to the upper end of the mounting member 15, and attaches the flat step member 16 to the lower end of the mounting member 15. The middle part of the lower wall member 17 is hinged,
The upper wall member 18 is connected between the step member 16 and the lower wall member 17, and when the step device 14 is rotated downward (FIG. 7), the mounting member 15, the step member 16 and the upper / lower wall member 1 are rotated.
A rectangular cross section is formed at 7, 18.

At this time, the step member 16 becomes substantially horizontal so as to form a step, and the base side of the lower wall member 17 covers the lower part of the vehicle body 81. To prevent it. When the step device 14 is rotated upward (FIG. 8), it is folded and stored in the gap 13, and at this time, the upper end is located at the same level as or slightly below the floor surface 5, and the upper and lower wall members 17 and 18. Form a substantially vertical wall surface continuously.

Reference numeral 19 denotes a driving device for rotating the step device 14 up and down. The driving device 19 fixes the barrel 22 of the cylinder 21 to the mounting member 15 via the mounting bracket 20 in the vertical direction. 23 can be extended upward and downward, the center of an inverted U-shaped mounting frame 24 is fixed, and a roller 25 and one end of an arm 26 are pivotally supported at both ends of the mounting frame 24, and the roller 25 is mounted. The guide frame 27 of the guide frame 27 fixed to the member 15 can be moved only in the vertical direction.

The other end of the arm 26 is connected to the step member 16.
Is supported by a bracket 29 via a bracket 29. When the cylinder 21 is extended by the above structure, the roller 25 rises along the guide groove 28 and the step member 16 is turned upward by the movement of the arm 26.

The elevator 11 will be described with reference to FIGS. 15 to 20. The elevator 11 has a main elevator 30, an intermediate frame 31, and an auxiliary elevator 32. The main elevator 30 has a box shape, and has a bracket 10 integrated with the elevator column 8 on both sides, and guide portions 33 formed on both inner sides. The intermediate frame 31 integrally connects left and right sliders 34 on the lower surface. The slider 34 is formed of a synthetic resin, and is slidably supported by a guide portion 33 of the main lift 30 and is mainly slidable. A stopper 35 of the main lift 30 and a step 36 of the slider 34 are engaged with each other as shown in FIG. 15 so as not to fall off the lift 30, and a guide 37 is formed inside the slider 34. I have.

On both sides of the auxiliary lift 32, sliders 38 made of synthetic resin are provided. The sliders 38 are slidably supported by guide portions 37 of the intermediate frame 31, and are also slidable from the intermediate frame 31. The stopper portion 39 of the intermediate frame 31 and the step portion 40 of the slider 38 are engaged so as not to fall off, and a stopper 41 having a triangular cross section is pivotally mounted at the tip so as to be able to stand up. The stopper 4 is moved by an electric cylinder 42 provided on the lift 32.
1 is erected.

Reference numeral 43 denotes a projecting device for projecting the auxiliary elevator 32 from the main elevator 30. The projecting device 43 is formed by combining a plurality of flat links 44 in a pantograph shape. One of the base ends is pivotally supported by the main lift 30, and the other is provided with a pin 46 guided by a guide rail 45 of the main lift 30 and is moved by a hydraulic cylinder 47 attached to the main lift 30. Has become available.

One of the ends is pivotally supported by an auxiliary lift 32,
The other is provided with a pin 49 that is guided by a guide rail 48 of the auxiliary lift 32. When the hydraulic cylinder 47 is reduced, the intermediate frame 31 and the auxiliary elevator 32 are extended from the main elevator 30. When the hydraulic cylinder 47 is extended, the intermediate frame 31 and the auxiliary elevator 32 are stored in the main elevator 30. It is supposed to be.

Reference numeral 50 denotes a lid for closing the opening 51 at the tip of the main elevator 30 when the auxiliary elevator 32 is stored. The lid 50 is hinged to the upper edge of the opening 51 and is provided with a spring 52. It is urged in the closing direction (FIG. 18), and covers the step with the main elevator 30 when the auxiliary elevator 32 projects.
(See FIG. 18).

Numeral 53 is a marking device such as a lamp for informing a person passing by the bicycle or motorcycle by the side of the bus 1 that the auxiliary elevator 32 is overhanging. The marking device 53 is fixed on both sides of the auxiliary elevator 32 at the front end side where the slider 38 is not provided, so as not to protrude laterally from the slider 38, and when the auxiliary elevator 32 is stored. The marking device 53 does not hit the intermediate frame 31.

The cable 54 of the marking device 53 is shown in FIG.
16 and along the link 44 of the overhanging device 43 to prevent sticking and breaking.
In particular, the cable 54 is fitted into a securing member 55 fixed to the link 44 for fixing to the link 44. Reference numeral 56 denotes a passing plate hinged to the base end of the main lift 30.
The transfer plate 56 is constantly urged in the projecting direction by a spring 57 provided at the center of rotation.
When the step 4 is used as a step (FIG. 3), the main lift 3
When the step device 14 is stored, the transfer plate 56 slides on the upper and lower wall members 17 and 18 to keep the standing state while the elevator platform 11 is being moved up and down (FIG. 4). When the user's feet are covered so as not to be caught between the lifting platform 11 and the vehicle body 81, etc., and rise to the same position as the floor surface 5 (FIG. 5), the transfer plate 56 extends to the floor surface 5 and moves up and down. Stand 11
The gap 13 between the floor and the floor 5 is closed.

The hydraulic pipes of the lifting cylinder 9 and the hydraulic cylinder 47 of the extension device 43 will be described with reference to FIGS. 11 to 13.
The hydraulic pipe 58 is fixed by a securing member 59 upward from the lower part. Also, the hydraulic piping 60 of the hydraulic cylinder 47
Fix the base end to the bracket 61 of one fixed support 7,
The tip is fixed to a bracket 62 projecting orthogonally from the bracket 10 of the lift 11 and is bent in an inverted U-shape at an intermediate portion.

The bracket 62 is provided with a guide frame 63 extending upward, and the guide frame 63 holds a hydraulic pipe 60. In particular, the lift 11 has moved downward from the fixed column 7. This is especially important. A hydraulic pipe 64 extending to the hydraulic cylinder 47 is connected to a tip of the hydraulic pipe 60.

A hydraulic pipe (not shown) extending from the vehicle body 81 is connected to a base end of the hydraulic pipe 60. 65
Is a cover for covering the hydraulic pipe 60, which is fixed to the fixed column 7. The right fixed column 7 has the hydraulic piping 60
A cable is provided in the same manner as in
4 is connected.

FIG. 14 shows a lock device 66 provided on the lower outer surface of the fixed column 7, which fixes the elevator 11 in an intermediate position, that is, a state where it is used as a step. The locking device 66 is provided with a locking cylinder 68 on a fixed support 7 via a support member 67,
Is provided in the support member 67, the engaging member 70 is fixed to the elevating column 8 facing the support member 67, and the lock pin 69 is inserted into the engaging hole 71 of the engaging member 70. By doing so, the lifting column 8 and the lifting table 11 can be fixed at an intermediate position.

FIG. 21 shows a hydraulic circuit 71 between the lifting cylinder 9 and the locking cylinder 68.
1 is provided with a three-position lifting switching valve 73 communicating from the hydraulic pump 72 to the lifting cylinder 9 and a three-position locking switching valve 74 communicating with the locking cylinder 68, and draining oil from the lifting switching valve 73. To the lock switching valve 74.

FIG. 22 shows a hydraulic circuit 75 for the cylinder 21 of the drive unit 19. The hydraulic circuit 75 is provided with a double pilot check valve 77 from a forward / reversely rotatable pump 76.
Through the cylinder 21. FIG. 23 shows a hydraulic circuit 78 of a hydraulic cylinder 47 of the overhanging device 43. The hydraulic circuit 78 is driven from a forward / reversely rotatable pump through a double pilot check valve 80.
It is connected to the.

In the embodiment, the present invention is applied to a bus. However, the present invention can be applied to a passenger car. Further, the elevator is not limited to the structure of the embodiment, and a similar effect can be obtained as long as the wheelchair is mounted on the elevator. Next, the operation of the present invention will be described with the above configuration. First, when the user gets on and off the vehicle in a wheelchair, the door 3 is opened from the state shown in FIG.

That is, by rotating the pump 76 in the normal direction to extend the cylinder 21 of the driving device 19 and pushing up the step member 16 by the arm 26, the step device 14
Is rotated upward as shown in FIG. 8 and folded and stored. The upper and lower wall members 1 are stored by storing the step device 14.
7 and 18 become substantially vertical wall surfaces and the lower wall member 17
Is extended downward.

Further, the transfer plate 56, which has been stored against the urging force of the spring 57, comes into contact with the lower wall member 17, that is, stands up, and the elevator 11 and the vehicle body 8
1 to prevent the foot from being pinched. Next, the lock switching valve 74 is switched to contract the lock cylinder 68, and the lock pin 69 is released from the engagement with the engagement member 70 (FIG. 14).

At the same time, the pump 79 is reversed to reduce the hydraulic cylinder 47 of the extension device 43. When the hydraulic cylinder 47 is reduced, the panda graph-like link 44 extends,
Initially, when the auxiliary elevator 32 passes through the opening 51 and pushes up the lid 50 to protrude from the main elevator 30, the step portion 40 of the slider 38 of the auxiliary elevator 32 engages with the stopper 39 of the intermediate frame 31. The intermediate frame 31 is the auxiliary elevator 3
2, the intermediate frame 31 also projects from the opening 51, and the stepped portion 36 of the slider 34 of the intermediate frame 31 engages with the stopper 35 of the main lift 30 to stop the extension.

By extending the auxiliary lift 32 in this manner, the lid 50 rotates upward and serves as a transfer plate for a step between the main lift 30 and the auxiliary lift 32. Also, by projecting the auxiliary elevator 32, the marking device 53 on the side of the auxiliary elevator 32 is exposed, so that it is possible to easily notify a pedestrian passing through the side of the bus 1.

Further, since the cables 54 accommodated in the lift 11 are provided along the links 44, the extension devices 43 are provided.
It also eliminates entanglement with others. When the extension of the auxiliary elevator 32 is completed as described above, when the passenger gets on the bus 1, the elevator switching valve 73 is switched to extend the elevator cylinder 9 to lower the elevator 11 to the ground and get off the bus 1. Then, the elevation switching valve 73 is switched to reduce the elevation cylinder 9 and raise the elevation table 11 to the same position as the floor surface 5.

After that, the same operation is performed when the user gets on the bus and when he gets off, so the case of getting on the bus will be described below. First, after the platform 11 comes to the ground, the user gets on the platform 11 in a wheelchair. At this time, the lid 50 plays the role of a step-passing plate, so that the user can get in smoothly.

After the wheelchair gets in, the stopper 41 is erected by the electric cylinder 42 to prevent the wheelchair from falling. Thereafter, the up / down switching valve 73 is switched to reduce the up / down cylinder 9, and the up / down table 11 is raised from FIG. 4 to FIG. During the ascent, the passing plate 56 holds the upright state. When the passing plate 56 rises to the same position as the floor surface 5, the passing plate 56 is extended by the urging force of the spring 57 to close the gap 13, and the wheelchair is moved up and down by It moves smoothly to the floor surface 5 through the transfer plate 56.

After moving to the floor 5, the elevator 11 is lowered to the ground, and the same operation is repeated again, so that a plurality of wheelchairs can get on the bus 1. Next, when the user gets on and off the bus by walking, the elevator switching valve 73 is switched from the state shown in FIG. 4 or FIG. 5 to move the elevator 11 up and down to the intermediate position by the elevator cylinder 9. After moving the elevator 11 to the intermediate position, the switching valve 74 for locking is switched to extend the cylinder 68 for locking, and the lock pin 69 is inserted into the engaging hole 71 to engage with the engaging member 70. 11 is fixed in the middle position.

At the same time, the hydraulic cylinder 47 for rotating the pump 79 forward is extended, the extension device 43 is folded, and the auxiliary lift 32 is stored in the main lift 30. At this time, the slider 38 of the auxiliary lift 32 is stored while the auxiliary lift 32 is being stored.
The base end contacts the guide portion 37 of the intermediate frame 31, and the intermediate frame 31 is stored in the main elevator 30 together with the auxiliary elevator 32.

When the auxiliary lift 32 and the intermediate frame 31 are stored in the main lift 30, the opening 51 is closed by the lid 50. After storing the auxiliary lift 32, the step device 14 is rotated downward. That is, the pump 76 is rotated in the reverse direction to reduce the cylinder 21 of the driving device 19, and the roller 25 is lowered, whereby the step member 16 rotates downward, and the lower wall member 17 pushes the transfer plate 56 to the bias of the spring 57. The step member 16 is stored horizontally on the elevator 11 and is in contact with the elevator 11, and the step member 16 is horizontally supported by the upper and lower wall members 17 and 18.

In this state, the elevator 11 and the step device 14
Use as a step and walk on and off. Bus 1
When the passenger gets on and off the vehicle, the door 3 is closed in the above state and the vehicle travels to the next place. In the embodiment, the step device is rotated downward to travel, but when the frequency of getting on and off in a wheelchair is high, the step device can be rotated upward.

[0042]

As described above, according to the present invention, an auxiliary lifting platform is provided on an intermediate frame on a main lifting platform horizontally held at the lower end of a lifting column, and a pantograph-like link is attached to a cylinder.
The intermediate frame and the auxiliary lifting platform can be stored in the main lifting platform by a foldable overhanging device . This makes it possible to increase the area of the elevator when getting on and off in a wheelchair, and it is very easy to get on and off the wheelchair on the elevator.

When the auxiliary elevator and the intermediate frame are stored in the main elevator, the depth of the elevator becomes extremely small. The depth is reduced, and the floor area of the vehicle can be increased. Further to the left of the auxiliary platform
Since there are pantograph-shaped links at both right ends,
The auxiliary lift can be moved smoothly and the
The main lift is located at the base of the main lift,
Deformation can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view of a bus equipped with the present invention.

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

FIG. 3 is an enlarged cross-sectional view taken along the line BB of FIG. 2;

FIG. 4 is an operation state diagram when the elevator is lowered.

FIG. 5 is an operation state diagram when the elevator is raised.

FIG. 6 is a CC diagram of FIG. 3;

FIG. 7 is an enlarged cross-sectional view taken along the line DD of FIG. 6;

FIG. 8 is a state diagram in which the step device is rotated upward.

9 is an enlarged cross-sectional view taken along the line EE of FIG. 8;

FIG. 10 is a sectional view taken along line FF of FIG. 9;

FIG. 11 is a partial view of a fixed column.

FIG. 12 is a GG diagram of FIG. 11;

FIG. 13 is a sectional view taken along line HH of FIG.

FIG. 14 is a sectional view taken along line II of FIG. 12;

FIG. 15 is a partial cross-sectional view of the elevator.

FIG. 16 is a sectional view taken along the line JJ of FIG. 15;

17 is a sectional view taken along the line KK of FIG.

FIG. 18 is a partial side view of the elevator when the auxiliary elevator is stored.

FIG. 19 is a side elevational view of the lift platform when the auxiliary lift platform is extended.

20 is an LL diagram of FIG. 18;

FIG. 21 is a hydraulic circuit diagram of a lifting cylinder and a locking cylinder.

FIG. 22 is a hydraulic circuit diagram of a cylinder of the drive device.

FIG. 23 is a hydraulic circuit diagram of a hydraulic cylinder of the overhang device.

[Explanation of symbols]

 2 Entry / Exit 5 Floor 6 Lifting device 7 Fixed column 11 Lifting platform 30 Main lifting platform 31 Intermediate frame 32 Auxiliary lifting platform

Claims (1)

(57) [Claims] 1. A fixed support fixed to a vehicle body is erected on the left and right of the entrance of a vehicle so that an elevator can be raised and lowered from the floor surface to the ground along the fixed support and fixed at an intermediate position. In the lifting device described above, the lifting platform includes a main lifting platform horizontally held at the lower end of the lifting column, an intermediate frame stored in the main lifting platform and supported so as to be able to project from the main lifting platform, and stored in the main lifting platform. an auxiliary lifting table which is overhanging rotatably supported to the intermediate frame with the auxiliary
Pantograph-shaped phosphorus pivotally supported on both left and right ends of the lifting platform
Can be folded by the cylinder provided at the base of the main lift
Lifting device composed of an overhanging device.