JPS5918313B2 - stair lift device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a stair lifting device attached to stairs in subway/railway station buildings and other places, and more specifically, a stair lifting device that allows a person using a wheelchair, such as a disabled person or a sick person, to go up and down the stairs while in a wheelchair. This invention relates to a stair lifting device that can be used by people who find it painful to go up and down stairs, such as the elderly and the sickly.

Conventionally, a stairway in which a traveling pedestal is movably provided on a rail with the same slope as the stairs installed above the stairs while maintaining a nearly horizontal state at all times, and a wheelchair platform is suspended from the traveling trestle so that it can be raised and lowered. Lifting devices have been devised.

However, since the traveling frame is always maintained in a horizontal state, the vertical distance between the upward direction of the stairs and the upper side of the traveling frame (the upper side of the stairs) is the same as the distance between the top of the stairs and the lower side of the traveling frame (the lower side of the same). It is shorter than the vertical distance, and during design, the distance between the stair lift device and the stairs is regulated by the vertical distance between the upper side of the traveling platform and the stairs.

Normally, when not in use (not on board), the wheelchair platform is raised and placed on top of the traveling platform so that it does not get in the way of passersby. It is desirable to have a wheelchair stand in the parking lot, as it makes passersby feel less uncomfortable and intimidated.

In addition, it is necessary to construct guide (rail) supports for stairs without ceilings, but it is preferable for the supports to be low (short) for safety and design reasons.

The present invention provides a stair lifting device that solves the above-mentioned problems by maintaining the traveling platform substantially horizontally when the user is on board, and superimposing the traveling platform substantially parallel to the guide when the user is not on board.

Hereinafter, the present invention will be explained based on the accompanying drawings.

As shown in FIGS. 1 and 2, the stair lifting device of the present invention includes a guide 10 provided above the stairs A and having the same slope as the stairs A, and a traveling frame 2 that moves along the guide 10.
0, a drive mechanism for moving the traveling frame 20, and a wheelchair stand 30 suspended from the traveling frame 20 so as to be movable up and down.

The guide 10 is installed on a support 11 erected on one side of the stairs A and is fixed to the lower surface of an I-shaped steel 120 along the slope of the stairs A, and the facility distance of the guide 10 is such that users can get on and off the stairs safely. It is best to extend it to the desired position.

In other words, in recent years, Stair A has been installed at the end of the floor, located further back from the side wall, and the entrance and exit are perpendicular to the direction of Stair A, so that the floor
It is preferable to bend and extend the guide 10 to the front of the entrance/exit.

As shown in FIGS. 3 to 6, the traveling frame 20 includes one guide roller 21 that slides on the rail 14 on the lower surface of the upper plate 13 of the guide 10, and a guide roller 21 on the inside of the lower end of the hanging plate 13' of the guide 10. A support roller 22 and the other guide roller 23 are provided which are in sliding contact with the rail 15.

One guide row 221 and support row 222 are connected to the support plate 24.2.
It is integrated with the frame 20 via 5, and both rollers 21
．． 22 is always kept constant.

The distance between the rails 14 and 15 is as shown in Figures 3 and 4.
As shown in the figure, the guide 10 is narrow at the horizontal part and wide at the inclined part, and one guide roller 21
When the rollers 21 are in pressure contact with the rail 14 and slide, both rollers 21
The pedestal 20 always moves almost horizontally while being restricted from vertical rotation at .degree.22.

The other guide row 223 is swingably provided on the support plate 25 via a support rod 26, and the support rod 26 is connected to the shaft 29 of the locking pawl 28 via a link mechanism 27.

By blocking the rotation of the locking pawl 28, the other guide roller 23 is prevented from swinging upward beyond a certain level.

The traveling frame 20 is provided with an electric motor 40, and the electric motor 40 is connected to a drive shaft 42 provided on the support plate 25 via a transmission/deceleration mechanism 41 and the like.

A sprocket 43 is fixed to the drive shaft 42, and a drive chain 44' is suspended between the sprocket 43 and a sprocket 44 fixed to the shaft of one of the guide rollers 22.

Further, a drive gear 46 is fixed to the shaft of the guide roller 22 and meshes with a rack 45 provided on the lower surface of the upper plate 13 of the guide 10.
The drive gear 46 rolls on the rank 45 via the drive gear 45, etc., and the pedestal 20 moves along the guide 10.

The moving speed of this gantry 20 is set to be slightly slower than the lifting and lowering speed of an ordinary person.

The traveling frame 20 is equipped with a wheelchair platform 30 by a hanging arm 31, and the hanging arm 31 has a plurality of sets of intersecting connecting frames 32 that are rotatably connected to each other at the intermediate portion and are rotatably connected at the end thereof. By connecting or separating the opposing ends of the connecting frames 32, the hanging arms 31 extend and contract, and the wheelchair platform 30 moves up and down.

The suspension arm 31 is connected to the traveling pedestal 20 and the wheelchair platform 30 by connecting the upper and lower ends of one connecting culm 32 to both platforms 20.
30 side plates 20a and 30a, respectively, so that the other connecting culm 32 end has a sliding groove 20b of the side plates 20a and 30a, respectively.
30b and are rotatably slidable via sliding shafts 32a, 32a, respectively.

The sliding grooves 20a and 30b are both horizontal in FIG.
is always maintained parallel to the traveling frame 20.

An operating frame 48 of a power cylinder 41 installed on the traveling frame 20 is connected to the upper sliding shaft 32a of the hanging arm 31.
The suspension arm 31 expands and contracts as the operating frame 48 moves in and out.

Further, when the operating frame 48 protrudes and the wheelchair platform 30 rises and overlaps the traveling platform 20, the sliding frame 30 as shown in FIG.
The above-mentioned locking claw 28 locks on 2a, and the other guide row 22
3 is prevented from swinging upward beyond a certain level.

As shown in FIGS. 1 and 8, handrails 33 are provided on both sides of the wheelchair platform 30, and the handrails 33 are driven by a drive mechanism 33' consisting of a motor, speed reducer, etc., driven by an operation switch (not shown). It is raised and lowered by the aircraft and raised when boarding.

A frame 34 is formed on the peripheral side of the wheelchair platform 30, and the frame 34
Wheel guide notches 35 for the wheelchair B are formed at the front and rear (left and right in FIG. 8).

The lower surface of this notch 35 is tilted outward, and the wheelchair B is placed on the platform 30.
It is a good idea to ensure smooth boarding.

Furthermore, a notch for stabilizing the wheelchair B into which the wheels fit may be formed on the upper surface of the platform 30.

The operation switch is attached to the side wall of the boarding area of the stairs A and the traveling platform 20, and the switch on the traveling platform 20 is set so that only the operation by the passenger (only the operation switch on the traveling platform 20 side) is activated when boarding. It may be moved up and down with the hanging arm 31 using a flexible cord to be located at a position where the passenger can use it, or it may be attached to the handrail 33.

For example, it is shown by the reference numeral 38 in FIG.

The stair lift device of the present invention is constructed as described above, and its operation will be explained below.

Now, when the operating ring 48 of the power cylinder 41 is retracted by operating the operation switch in a state where the traveling platform 20 etc. is located in the dance area where the user is located, the suspension arm 3
1 extends, and the wheelchair platform 30 descends and comes into contact with the floor and stops.

This stopping operation is performed using a cloak switch 3 on the underside of the wheelchair platform 30.
This can be done by providing a first class.

As shown by the chain line in FIG. 5, when the power cylinder 4T is in the contracted state, the locking pawl 28 is free to swing, and the other guide roller 23 is not prevented from swinging, so the traveling frame 20 rotates about the support row 222 to a horizontal state, one of the guide rollers 21 comes into sliding contact with the rail 14, and the horizontal state of the °C traveling frame 20 is maintained by both rollers 21 and 22.

Next, move the wheelchair B and board the wheelchair platform 30,
The power cylinder 47 is operated in reverse, the operating ring 48 is projected, the wheelchair platform 30 is raised about 30z from the floor, and the power cylinder 47 is stopped.

When the electric motor 40 is driven in this floating state,
The traveling platform 20 moves along the guide 10, and the wheelchair platform 3
0 goes up and down stairs A and transports passengers.

During transportation, the traveling platform 20 is always maintained in a horizontal state even when the guide 10 bends upward and downward, so that the wheelchair platform 30 is also maintained in a horizontal state and is smoothly transported.

When the wheelchair platform 30 reaches the stair A position on the opposite side of the boarding area,
Stop the electric motor by 40°C using a limit switch, etc.

Next, the power cylinder 47 is contracted and the hanging arm 31 is extended to bring the wheelchair platform 30 into contact with the floor surface, and then the wheelchair B is moved to get off the wheelchair platform 30.

After that, the operating ring 48 of the power cylinder 47 is projected, the suspension arm 31 is folded, and the wheelchair platform 30 is moved to the traveling frame 20.
Overlay on.

Due to this protrusion of the operating ring 48, the locking pawl 28 locks on the sliding shaft 32a as shown by the solid line in FIG. 5, and further upward swinging of the other guide row 223 is prevented.

That is, the protrusion of the operating ring 48 causes the locking pawl 28 to rotate to the right in the same figure, but the other guide row 2
23 is in pressure contact with the rail 15 and does not move, so the traveling frame 2
0 rotates upward about the support roller 22 and becomes parallel to the guide 10 as shown in FIG.

In this case, one guide roller 21 separates from the rail 14.

When the °C traveling frame 20 is moved along the guide 10 in this state, the state shown in FIG. 4 is always maintained by the support rollers 22 and the guide rollers 23.

In other words, when not in use (not on board), the traveling platform 20 and stairs A
The vertical distance is longer than that in the conventional case where the traveling frame 20 is always at a constant inclination.

Therefore, if there is a traveling frame 20 etc. on the opposite side and you go up and down stairs A using this on your side, for example, when going up and down stairs A,
When going up and down using the traveling platform 20 etc. on the upper side by your side on the lower side, the traveling platform 20 is higher than the conventional one with a guide of the same height, so there is less discomfort and intimidation to passersby. .

In addition, although the said Example was the case of the staircase A without a ceiling, in the case of the staircase A which has a ceiling, the guide 10 may be installed directly on the ceiling.

Furthermore, it goes without saying that the device of the present invention can be applied not only to wheelchair users such as physically disabled and sick people, but also to people who find it painful to go up and down stairs.

Furthermore, the mechanism for raising and lowering the wheelchair platform 30 is not a suspension arm type with a pantograph structure as in the embodiment, but a mechanism for raising and lowering the wheelchair platform 30.
A winch is provided on the winch, the wheelchair platform 30 is suspended by a wire wound around the winch, and the wire is wound up and unwound by the winch. A touch switch may be attached to stop the drive of the device when the wheelchair platform 30 hits a passerby or the like.

As described above, the stair lifting device of the present invention is provided with a support roller and a guide roller 2 that are in sliding contact with the guides on the support roller and the traveling base, respectively, and by the action of these rollers, the traveling base is kept almost horizontally and unevenly when boarded. Since it is parallel to the guide when boarding, the vertical distance between this device and the stairs when not boarding is longer than the conventional one where the traveling platform is always maintained horizontally, making it uncomfortable and intimidating to passersby. As the feeling decreases,
This is also advantageous in terms of design.

This is especially advantageous for stairs with low ceilings.

In addition, if the mounting of the traveling frame to the guide is a mole rail type in which the traveling frame is suspended from the guide with a single guide line serving as the traveling rail of the traveling frame as in the example, the guide will be attached to the guide with only one line. Since the traveling mount has good ability to follow bending, the bending ratio of the guide can be increased, and the traveling mount can easily bend at right angles etc. in a small space.
This is advantageous for stairs, etc. installed deeper than side walls.

[Brief explanation of the drawing]

The drawings show an embodiment of the stair lift device of the present invention, and FIG. 1 is a schematic diagram, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a partially enlarged view of FIG. 1 when boarding, and FIG. 4 is a partial enlarged view of FIG. 1 when no passenger is on board, FIGS. 5 and 6 are partially cutaway perspective views and sectional views of the traveling platform, and FIGS. 7 and 8 are partially cutaway perspective views of the wheelchair platform. FIG. 3 is a diagram and a cut side view. A: Hate role, B: Wheelchair, 10...
...Guide, 14.15...Rail, 20.
...Traveling platform, 21...One guide gate
7.22...Support roller, 23...-other guide roller, 28...Latching claw, 30...
...Wheelchair stand, 31...Hanging arm, 40...
...Electric motor, 45...Rank, 46...
...Drive gear.

Claims (1)

[Claims] 1. A guide provided above the stairs and having the same slope as the stairs;
It consists of a traveling pedestal that moves along the guide, a drive mechanism that moves the traveling pedestal along the guide, and a wheelchair platform that is suspended from the traveling pedestal so that it can rise and fall freely. A support roller that constantly slides to support the pedestal, a guide row 2 that maintains the pedestal almost horizontally together with the support roller by sliding in pressure contact with the guide, and a support roller that slides in pressure contact with the guide to support it. The other guide roller that maintains the pedestal substantially parallel to the guide together with the roller, a switching mechanism that selectively releases the pressing action of both guide rollers against the guide, and a drive mechanism that raises and lowers the wheelchair platform are provided. A stair climbing device characterized by: 2. The stair lifting device according to claim 1, wherein the traveling pedestal is attached to the guide using a mole rail type in which the traveling pedestal is suspended from a single guide.