JP3022430B2 - Stair climbing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided on stairs in public facilities including train stations and general homes, for example, stair climbing so that a wheelchair user can easily go up and down stairs. Related to the device.

[0002]

2. Description of the Related Art Many buildings such as public facilities such as train stations and general homes are provided with passages including stairs. For example, railway stations are generally configured to allow passers-by to pass between the ticket gate floor and the platform using a passage including stairs. Passages using these stairs may be difficult or impossible for people with reduced mobility. For example, since a wheelchair user cannot go up and down stairs by himself, a surrounding person, such as a caregiver or a station staff, lifts and carries the entire wheelchair and goes up and down the stairs.

[0003]

As described above, it is difficult for a wheelchair user or the like to go up and down the stairs. Therefore, there is a tendency that an elevator is installed separately from the stairs or a slope having a gentle slope is provided. is there. However, there are cases where an elevator and a slope cannot be provided due to space restrictions or the like. Therefore, there is a demand for a stair climbing device that can be easily provided on an existing stair, and that allows a person with a disability or a wheelchair to easily go up and down the stairs.

[0004] In addition, when a wheelchair is mounted on such a stair climbing device and lifted up and down, in order not to give a shock to the user of the wheelchair, the vehicle is started slowly when starting, and also when stopped. Need to be stopped.

Accordingly, an object of the present invention is to provide a stair climbing device which can be easily provided on an existing stair and allows a person with a disability to easily go up and down the stair.

Another object of the present invention is to provide a stair climbing and lowering device capable of starting slowly and stopping gently.

[0007]

SUMMARY OF THE INVENTION The present invention provides an elevator, a lift guide rail provided along a stair provided from a lower floor to an upper floor of an existing building, and guides the elevator, a lower floor, A telescopic tube that is provided over a support part and an elevating body provided on any one of the upper floors and is filled with gas, and that can expand and contract in the tube axis direction, and a gas in the telescopic tube. A suction pressure source for sucking and contracting the telescopic tube, a second support portion provided on one of the lower floor and the upper floor, and the elevating body are provided, and the internal space is filled with gas. A second telescoping pipe, which can be expanded and contracted in the pipe axis direction, and a supply pressure source for supplying gas into the second telescoping pipe to expand the second telescoping pipe. A lifting device.

According to the present invention, the elevating body guide rail for guiding the elevating body is provided along the stairs, and the elevating body can move along the stairs. A telescopic tube filled with gas is provided between the elevating body and a support portion provided on one floor, and the telescopic tube is contracted by sucking the gas in the telescopic tube by a suction pressure source, thereby moving up and down. The body will be drawn to one floor. Therefore, for example, by providing the support portion on the upper floor, providing the elevating body on the lower floor, and mounting the wheelchair on the elevating body, the user of the wheelchair can easily climb the stairs from the lower floor to the upper floor. it can. In addition, since the elevating body guide rail is provided on the existing stairs, and the elevating body is configured to move up and down along the guide rails, it is possible to easily install the elevating body on the existing stairs without requiring large-scale construction.

When the gas in the telescopic tube is sucked by the suction pressure source, the telescopic tube is in an extended state at the time of starting, so that the volume of the internal space is large. As a result, the elevating body does not immediately start moving, but starts to move slowly after being sucked to some extent. When the elevating body starts to move, the elevating body is accelerated by the inertial force of the elongating body and the contracting action of the telescopic tube which contracts by sucking the gas, and ascends the stairs along the guide rail. When the elevating body rises to the vicinity of the upper floor, the telescopic tube contracts, and the gas in the telescopic tube is compressed. As a result, the contracting action of the telescopic tube is reduced, and the elevating body is decelerated. When the vehicle reaches the upper floor, the lifting body can be gently stopped by stopping suction by the drive source. In this way, the vehicle can be started gently and stopped gently, so that it is possible to prevent the user from being shocked when starting and stopping. In addition, since the vehicle is accelerated after gently starting, the elevating body can be quickly moved from the lower floor to the ascending floor. Similarly, when the lifting body is lowered from the rising floor to the lower floor, the vehicle slowly starts and accelerates, and the telescopic tube contracts near the lower floor, whereby the lifting body is decelerated and gradually stops at the lower floor. Can be. Further, by mounting a box of canned juice or the like on the elevating body, it is possible to easily carry up and down stairs even with heavy objects that are difficult to carry by human power.

[0010]

Further, a telescopic tube which is sucked and contracted by a suction pressure source is provided between the supporting part on one floor and the elevating body, and is provided between the other supporting part on the other floor and the elevating body. Is expanded by being supplied with gas from the supply pressure source.
Two telescopic tubes are provided. It is better to supply gas to the telescopic tube in the contracted state and drive the elevating body by driving the elevating body than in the case where the elevating body is driven by sucking gas from the telescopic tube in the expanded state. And the amount of acting gas is small, so that the elevating body can be driven quickly. When the elevating body is driven by the expanding and contracting tube, the elevating body is moved in proportion to the amount of supplied gas, so that when the gas is supplied at a constant rate from the driving source, the moving speed becomes almost constant. . Therefore, by combining such a telescopic tube that expands and a telescopic tube that contracts, it is possible to quickly drive the elevating body after operating each drive source, and to drive only the telescopic tube that contracts. It can be moved up and down at a higher speed.

[0012]

FIG. 1 is a sectional view schematically showing a stair-climbing apparatus 1 according to an embodiment of the present invention. The stair elevating device 1 is installed on a stair 4 provided from the lower floor 2 to the upper floor 3 and basically includes an elevating body 12, an elevating body guide rail 14 for guiding the elevating body 12,
And the second telescopic tubes 5 and 20 and the first and second pressure sources 7 and 16.

An elevator guide rail 14 is provided along the stairs 4 from the lower floor 2 to the upper floor 3, and the elevator 12 is guided along the elevator guide rail 14. The first pressure source 7 is installed on the upper floor 3,
A first telescoping tube 5 that is extendable and contractible in the tube axis direction from the first support part 6 which is one side wall of the pressure source 7 on the stairs 4 side to the elevating body
Is provided. Further, a second pressure source 16 is provided on the lower floor 2, and a second telescopic tube that is expandable and contractible in the pipe axis direction from a second support portion 18, which is a side wall of the second pressure source 16 on the step 4 side, to the elevating body 12. 20 are provided. The first and second pressure sources 7, 16 for sucking and supplying air include, for example, a suction pump and a compressor, or are air pumps that can perform suction and supply of air by rotating forward and backward, for example. When the elevating body 12 is disposed on the lower floor 2 side, the first telescopic tube 5 is in an extended state, and the second telescopic tube 20 is in a contracted state, the first pressure source is driven to drive the first telescopic tube 5 inside the first telescopic tube 5. The air is sucked into the second pressure source 16
Is driven to supply air into the second telescopic tube 20, the first telescopic tube 5 contracts, and the second telescopic tube 20 expands, so that the driving body 12 moves along the elevating body guide rail 14. It is driven to the upper floor 3.

The elevating body 12 includes a rectangular mounting table 24, a back wall 26 that rises from a side near the rear (left side in FIG. 1) of the mounting table 24, and a front side of the mounting table 24 (right side in FIG. 1). A) a front wall 25 that rises from the side closer to the first side, and the first wall 25
One end of the telescopic tube 5 is airtightly connected, and one end of the second telescopic tube 20 is airtightly connected to the back wall 26. Front wheels 28 are provided on both sides in the left-right direction (perpendicular to the plane of FIG. 1) of the mounting table 24 near the front (right side in FIG. 1) so as to be rotatable around an axis extending in the left-right direction. I have. On the back wall 26, air cylinders 30 are provided on both sides in the left-right direction.
Each of the air cylinders 30 has a piston rod that is vertically expandable and contractible with respect to the cylinder portion, and a rear wheel 32 is provided at the tip of each piston rod so as to be rotatable around an axis extending in the left-right direction. ing. Each of the front wheels 28 and each of the rear wheels 32 are provided so as to have the same interval in the left-right direction.

As shown in FIG. 2, the elevating body guide rail 14 is a rail having a circular cross section at right angles to the axis.
Are provided in parallel with each other. Each elevating body guide rail 14 is provided at the same interval as the horizontal distance between each front wheel 28 and each rear wheel 32 provided on the elevating body 12. Each of the front wheels 28 and each of the rear wheels 32 provided on the elevating body 12 are formed with a fitting groove extending over the entire circumference in the outer peripheral portion, and the cross-sectional shape of the fitting groove is arc-shaped. Each lifting body guide rail 14 is fitted in the fitting groove.
Are fitted, the front wheels 28 and the rear wheels 32 are rolled stably on the lift guide rails 14 without rattling, and the lift 12 is guided by the lift guide rails 14. You can move.

The first and second pressure sources 7, 16 are detachably mounted on the upper floor 3 and the lower floor 2, respectively, and have first and second pressure sources 7, 16 having openings for discharging and sucking air. The other end portions of the first and second telescopic tubes 5 and 20 are air-tightly connected to the second support portions 6 and 18, respectively. Each of the telescopic tubes 5 and 20 is a bellows tube in which the reinforcing rings 13 are fixed to the flexible airtight cylindrical body 15 at equal intervals in the longitudinal direction. Therefore, each telescopic tube 5, 2
In the state 0, expansion and contraction in the radial direction is prevented, and the expansion and contraction can be selectively performed only in the longitudinal direction. First and second telescopic tubes 5,
The other end of 20 is detachably connected to the front wall 25 and the back wall 26 of the elevating body 12, respectively. In the connected state, the other end of the first and second telescopic tubes 5, 20 is hermetically closed. Is done.

First and second telescopic tube guide rails 36 and 37 are provided to guide the first telescopic tube 5 and the second telescopic tube 20 from the first support part 6 to the second support part 18, respectively. Reinforcing rings 1 of first and second telescopic tubes 5, 20
3 is provided with a locking piece (not shown) on each side, and each locking piece of the first telescopic tube 5 is provided on the first telescopic tube guide rail 3.
6, and each locking piece of the second telescopic tube 20 is also displaceably locked to the second telescopic tube guide rail 37, whereby the first and second telescopic tubes 5, 20 are moved. When it expands and contracts, it is guided along the guide rails 36 and 37, respectively, thereby preventing the telescopic tubes 5 and 20 from hanging down and hindering the traveling of the elevating body 12. The first and second telescopic pipe guide rails 36 and 37 are respectively provided in parallel with the elevating body guide rail 14 and fixed to, for example, the side wall of the stairs 4. In addition, each guide rail 36, 37 is connected to each telescopic tube 5,
20 are arranged on both sides of the reinforcing ring 13 correspondingly.
May be provided on both sides of each of the telescopic tubes 5, 20 so that the telescopic tubes 5, 20 are locked and guided on both left and right sides. With such a configuration, the telescopic tubes 5 and 20 are stably guided.

The locking pieces are telescopic tube guide rails 36, 3
7 and can be detached from the telescopic tube guide rails 36 and 37. Thus, the telescopic tubes 5, 20 can be released from the engagement with the telescopic tube guide rails 36, 37, the pressure sources 7, 16 are movable, and the elevating body 12 is moved up and down. It is only placed on the body guide rail 14. Therefore, these elevating body 12, pressure sources 7, 16 and telescopic tubes 5, 20 can be moved, and can be stored in a hangar or the like when stair elevating device 1 is not used, The stairs 4 are only provided with the guide rails 36 and 37 provided on the side walls of the stairs, and do not hinder traffic.

The elevating body 12 is provided with a horizontal sensor (not shown), which can detect the inclination angle of the mounting table 24 from the horizontal. The elevating body guide rail 14 is provided along the stairs, and when the stairs have a landing 17 as shown in FIG. 1, the inclination angle changes. When the moving body 12 moves while being guided by each of the elevating body guide rails 14, the angular position of the elevating body 12 is displaced around an axis extending in the left-right direction, and the mounting table 24 is inclined from a horizontal state. In order to solve such a problem, the wheelchair 40 can be stably mounted on the mounting table 24, and in order to ensure the high safety of the user of the wheelchair, the air cylinder is controlled based on the detection value from the horizontal sensor. 30 is drive-controlled. The horizontal sensor is realized by, for example, a gyroscope. Based on a detection value from the horizontal sensor, the air cylinder 30 is driven and controlled, and its piston rod is extended or retracted, so that the mounting table 24 maintains horizontal. it can. Thereby, high security can be ensured. As the air for driving the air cylinder 30, a part of the air supplied / sucked from the pressure sources 7 and 16 to the telescopic tubes 5 and 20 can be used, so that there is no need to provide a separate air pressure source. . The horizontal sensor need not be limited to the gyroscope, and another sensor may be used.

In place of the reinforcing ring 13 of the tubular body 15 of each of the telescopic tubes 5 and 20, a reinforcing linear body that spirally winds the tubular body 15 may be used. Even with such a linear body, it prevents each telescopic tube 5, 20 from expanding and contracting in the radial direction,
It can be selectively expanded and contracted only in the longitudinal direction. Such a linear body is realized by, for example, a metal wire.

Next, the wheelchair 4 is moved by the stair climbing device 1.
An example of an operation when a user 0 goes up the stairs 4 is shown. First, the lifting body 12, the first and second pressure sources 7, 16 and the first and second telescopic tubes 5, 20 are taken out of the hangar, and the first
The pressure source 7 is installed on the upper floor 3, and the second pressure source 16 is installed on the lower floor 2. Next, the elevating body 12 is placed on the guide rail 14 on the lower floor, and each locking piece of the first telescopic tube 5 connected to the first pressure source 7 is connected to the first telescopic tube guide rail 36.
And each locking piece of the second telescopic tube 20 similarly connected to the second pressure source 16 is locked to the second telescopic tube guide rail 37, and then one end of the first telescopic tube 5 is One end of the second telescopic tube 20 is connected to the front wall 25 of the elevating body 12 and the
2 to the back wall 26. Further, on the lower floor 2 and the upper floor 3, platforms 33 and 34 for guiding the wheelchair 40 from the floor surface to the mounting table 24 of the elevating body 12 are installed on the lower floor 2 and the upper floor 3, respectively. The user of the wheelchair gets on the elevator 12 from the wheelchair 45 and the lower floor 2 via the platform 33.

Thereafter, the first and second pressure sources 7 and 16 are operated, and the air in the first telescopic tube 5 is sucked by the first pressure source, and the second telescopic tube 20 is fed into the second telescopic tube 20 from the second pressure source. Supply air. Thereby, the first telescopic tube 5 contracts and the second telescopic tube 20 expands, and guides the elevating body 12 toward the upper floor 3 along the elevating body guide rail 14. At this time, the air cylinder 30 is driven based on the detection value from the horizontal sensor, and as shown in FIG.
The second mounting table 24 is held substantially horizontally. From this state, the air in the first telescopic tube 5 is further sucked and the second telescopic tube 20 is sucked.
The elevating body 12 rises to the upper floor 3 by supplying air to the inside. When the lifting body 12 reaches the upper floor 3, the operation of the first and second pressure sources 7, 16 is stopped, and the movement of the lifting body 12 is stopped. Thereafter, the wheelchair 45 and the user are lowered onto the floor of the upper floor 3 via the platform 34, and the movement of the wheelchair user from the lower floor 2 to the upper floor 3 is completed.

Conversely, when the user of the wheelchair descends on the stairs 4, the user of the wheelchair rides on the elevator 12 on the upper floor 3 together with the wheelchair 40 from the platform 34, and the first pressure source 7, the air is supplied into the first telescopic tube 5 to expand the first telescopic tube 5, and the second pressure source 16 sucks the air in the second telescopic tube 20 to draw the second telescopic tube 20.
To shrink. As a result, the elevating body 12 is moved to the upper floor 3
From the floor to the lower floor 2. When lowering the elevating body 12, the first and second pressure sources 7, 16
Operating the first and second pressure sources 7, 16
The first and second telescopic tubes 5 and 20 are communicated with the atmosphere by a switching valve provided therein, whereby the lifting body 12
May be lowered by its own weight. Lifting body 12
Is lowered, the first telescopic tube 5 expands while sucking air from the atmosphere, and the second telescopic tube 20 contracts while discharging air into the air. When the lifting body 12 reaches the lower floor 2, the first and second pressure sources 7, 1
6, the first and second telescopic tubes 5, 20
When the communication with the atmosphere is cut off, the elevating body 12 stops.

When the movement of the elevating body 12 is completed in this way, the elevating body 12, the first and second pressure sources 7, 16 and the first and second telescopic tubes 5, 20 are removed and stored.

Here, the operation of the air pressure source 16 and the operation of discharging air from the supply pipe 20 can be operated by a switch provided on the elevating body 12, and can be operated by a user of the wheelchair 40. In this way, the convenience may be improved, or the remote control may be used to improve the convenience. Further, the arrival of the elevating body 12 at the predetermined positions on the lower floor and the upper floor is detected using a detector such as a limit switch, and based on a signal from the detector, the operation of the air pressure source 16 is stopped. Alternatively, the communication between the first and second telescopic tubes 5 and 20 to the atmosphere may be cut off.

By using the stair climbing device 1 as described above, a person with a disability such as a wheelchair user can be lifted.
2 and moving the elevating body 12,
You can easily go up and down stairs. This stair-climbing device 1 can be used not only for people with physical disabilities.
In addition, an article, for example, drinking water such as a canned juice box, can be carried on the elevating body 12, and the article can be transported, so that a heavy object or the like that is difficult to apply manually can be easily transported.

Telescopic tube 5 for moving the elevating body 12
20 is flexible, so that, for example, when the stairs 4 have a landing 17,
When turning 0 degrees or spiral staircase,
Even if a stair has a complicated shape, it can extend along the stair. In particular, by the telescopic tube on the suction side, the elevating body can be accurately guided along the steps even if the steps have a complicated shape. Furthermore, the stair climbing device 1 has a simple configuration, and can be easily provided on existing stairs.

The first and second telescopic pipe guide rails 36 and 37 provided along the stairs and the locking pieces movably locked along the respective pipe guide rails 36 and 37 are flexible. First and second telescopic tubes 5 and 20 having flexibility
Extends / shrinks along the first and second telescopic tube guide rails 36 and 37 and does not extend in an undesired direction. Further, since air is used as the fluid and an air pump is used as the air pressure source 16, it is possible to use the surrounding air, so that the configuration can be downsized without the need for a storage facility such as a tank. In addition, even if the used air is discharged, the surroundings such as air pollution are not affected.

FIG. 4 is a graph showing the relationship between the pressure p in the telescopic tube 5, the moving distance S of the elevating body 12, and the time t when the elevating body 12 is raised from the lower floor 2 to the upper floor 3 only by suction. It is. First, at time t10, when the pressure source 7 is operated to suck the air in the first telescopic tube 5, the air in the first telescopic tube 5 gradually decreases from 1 atm. Since the first telescopic tube 5 is in the expanded state, the internal space is large and has a certain time until the pressure at which the elevating body 12 can be moved is reached. When the pressure reaches this pressure at time t11, the elevating body 12 becomes Start moving slowly. When the elevating body 12 starts to move, the elevating body 12 is gradually accelerated by its inertial force and the contracting action of the first telescopic tube 5. When the elevating body 12 is accelerated and approaches the upper floor 3, the telescopic tube 5 contracts to
The volume of the telescopic tube 5 decreases. When the decrease in volume due to the contraction exceeds the decrease in the volume of the telescopic tube 5 contracted by the suction of the pressure source 7, the pressure in the first telescopic tube 5 starts to increase.
As a result, the speed of the elevating body 12 is reduced, and as the vehicle approaches the upper floor 3, the speed of the elevating body 12 approaches zero.
By stopping the suction of the air in the first telescopic tube 5 by the pressure source 7, the lifting body 12 can be gently stopped on the upper floor 3.

FIG. 5 shows the lifting and lowering body 1 only by supplying air.
6 is a graph showing a relationship between a pressure p in a second telescopic tube 20, a moving distance S of a lifting / lowering body 12, and a time t when the lift 2 is raised from a lower floor 2 to an upper floor 3. Since the second telescopic tube 20 is initially in a contracted state, the internal space inside the second telescopic tube 20 is small. Therefore, when the second pressure source 16 is operated at the time t20 and the supply of air into the second telescopic tube 20 is started, the pressure required to move the elevating body 12 is immediately reached, and at the time t21, the elevating body 12 is moved. Begins to move. The elevating body 12 is pressed by the second telescopic tube 20 that extends and moves toward the upper floor 3. At this time, since the elevating body 12 moves in proportion to the amount of air supplied into the second telescopic tube 20, the pressure in the second telescopic tube 20 is substantially constant,
The moving speed of the elevating body 12 is also substantially constant. When the operation of the second pressure source 16 is stopped to reach the upper floor 3 and the supply of air into the second telescopic tube 20 is stopped,
The elevating body 12 stops on the upper floor 3. When the elevating body 12 is moved by being pressed by the supply of air in this way, the elevating body 12 starts moving immediately after the pressure source 16 is operated, but when the elevating body 12 starts and stops. Occasionally, the speed suddenly changes, which causes a shock such as vibration to the user who is mounted on the elevating body 12.

FIG. 6 is a graph showing the relationship between the moving distance S of the lift 12 and the time t when the lift 12 is raised from the lower floor 2 to the upper floor 3 by suction and supply of air. When the first and second pressure sources 7 and 16 are operated to suck air in the first telescopic tube 5 and supply air into the second telescopic tube 20, the elevating body 12 is only sucked by the air.
Can be started faster than when the vehicle is pulled, and can be started slowly rather than suddenly at the time of starting. When the elevating body 12 starts to move, the elongating body 12 is extended by the extension action of the second telescopic pipe 20 in addition to the contracting action of the first telescopic pipe 5.
Will accelerate quickly. When reaching the upper floor 3, the elevating body 12 is decelerated by the pressure increase due to the contraction of the first telescopic tube 5, and when reaching the upper floor 3, the speed of the elevating body 12 becomes almost 0, and the first pressure source 7 By stopping the suction of the air in the first telescopic tube 5 and the supply of the air to the second telescopic tube 20 by the second pressure source 16, the elevating body 12 gradually stops on the upper floor 3. The first telescopic tube 5 that contracts in this way and the second telescopic tube 2 that expands
By combining 0, the elevating body 12 can be quickly moved from the lower floor 2 to the upper floor 3, and can be started gently and stopped gently. Similarly, when the elevating body 12 is lowered from the raised floor 3 to the lower floor 2, it can be slowly started from the upper floor 3 and stopped slowly on the lower floor 2.
Thus, gradual start and gradual stop can be performed without providing an electric control device.

As another embodiment of the present invention, for example, the second pressure source 16 is not provided, and a communication pipe for communicating the exhaust port of the first pressure source 7 and the other end of the second telescopic tube 20 is provided. Air may be sucked from the first telescopic tube 5 by the first pressure source 7 and the sucked air may be supplied to the second telescopic tube 20 via the communication tube. Thereby, air can be sucked from the first telescopic tube by one pressure source and air can be supplied to the second telescopic tube, and the configuration is simplified. With this configuration, the air in the first telescopic tube 5 and the second telescopic tube 20 is circulated, so that a gas other than air may be used as the working gas. For example, by using a gas having a low compression rate as the working gas, the elevating body 12 can be quickly started.

[0033]

[0034]

[0035]

FIG. 7 is a sectional view showing a lift guide rail 70 according to another embodiment of the present invention. Only the characteristic parts of the present embodiment will be described, and the description of the parts having the same configuration will be omitted. The guide rail 70 has two guide members 72 and 74 fixed to the side wall of the stairs 4.
Recessed grooves 76 and 78 are formed in the grooves 2 and 74, respectively. The elevating body 12 has an elevating body arm 80.
Is fixed, and one end of the lifting / lowering body arm 80 is
It is slidably fitted in each of the grooves 76 and 78. Further, a reinforcing arm 82 is fixed to the lifting / lowering body arm 80, and the tip end thereof slidably abuts the rail member 74,
The lifting arm 80 is reinforced. Even with such a configuration, the elevating body 12 can move while being guided by the elevating body guide rail 70. Also, by using the elevating body guide rail 70 fixed to one wall in this way, it is possible to prevent the rail from being installed on the stairs 4 and prevent the rail from hindering the users of the stairs. It is.

Further, as still another embodiment of the present invention, a bag may be provided which inflates on both sides and back and forth in the elevating body 12 by supplying air.
Thereby, it is possible to prevent a trouble such as a user of a wheelchair rolling down from the elevating body 12. In addition, since the bag is inflated by air to prevent falling, it does not cause pain when contacted by people such as wheelchair users, and in the case of articles such as canned juice, it does not cause pain. Is not damaged. In addition, there is no need to separately provide an air source for inflating the bag, and the pressure sources 7 and 16 can be used in the embodiment of FIG.

The above-described embodiment is merely an example of the present invention, and the shape, dimensions, and the like can be appropriately changed.
Three or more lifting body guide rails 14 may be provided, and a pinion and a rack are used as means for holding the mounting table 24 of the lifting body 12 horizontally based on a signal from a horizontal sensor. A guide rail that keeps the mounting table 24 horizontal by guiding the rear of the mounting table 24 of the elevating body 12 may be configured by driving a mechanism, a link machine groove, an electric cylinder, or the like. It may be configured to be provided. Also, the first and second telescopic tubes 5, 20
May be made of, for example, rubber, synthetic resin, cloth or the like. In addition, a wheelchair 40 mounted on the elevating body 12 and the like,
It may be locked by a metal or synthetic resin locking piece or the like, or the elevating body 12 may be formed in a box shape. Further, the lifting / lowering body guide rail 14 may be realized by a pipe which expands in a circular shape by supplying a fluid such as water. May not be hindered.

[0039]

According to the present invention, when the gas in the telescopic tube is sucked by the suction pressure source, the telescopic tube contracts, and the elevating body moves along the elevating body guide rail. Therefore, when the user of the wheelchair gets on the elevating body together with the wheelchair, the user can easily go up and down the stairs. Further, since the telescopic tube is in an extended state when the elevating body starts moving, the elevating body starts gently when the gas in the telescopic tube is sucked by the suction pressure source. When the elevating body starts moving, the elevating body is accelerated by the inertial force and the contracting action of the telescopic tube, and can move quickly. When the elevating body approaches one floor, the gas in the telescopic tube is compressed by the contraction of the telescopic tube, whereby the elevating body is decelerated, and when the elevating body reaches one floor, the inside of the telescopic tube by the suction pressure source is reduced. By stopping the suction of the gas, the lifting body can be gently stopped on one floor. Since the elevating body starts and stops gently in this way, no impact is exerted on the user who gets on the elevating body when starting and stopping, and safety is improved. In addition, an article, for example, drinking water such as a canned juice box, can be carried on the elevating body, and the article can be transported, so that a heavy object, which is difficult to apply manually, can be easily transported. In addition, such a stair climbing device can be installed simply by providing an elevating body guide rail along the stairs, mounting the elevating body on this guide rail, and connecting the suction pressure source and the elevating body by a telescopic tube. Since it is possible, large-scale construction is not required, and it can be easily installed on the existing stairs.

Further, a second support portion is provided on the other floor, and a second telescopic tube is provided between the second support portion and the elevating body, so that the elevating body is moved from the other floor to the one floor. When moving, by the suction pressure source,
By sucking the gas in the telescopic tube and supplying the gas into the second telescopic tube by the suction pressure source, the elevating body can quickly move from the other floor to the one floor. Since the elevating body is moved by the two pressure sources as described above, the elevating body can be moved quickly as compared with the case of moving only by suction, and can be started and stopped gently. Is prevented from being impacted.

[Brief description of the drawings]

FIG. 1 is a simplified cross-sectional view showing a stair climbing device 1 according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the elevating body guide rail 14 and a rear wheel 32.

FIG. 3 is a simplified cross-sectional view of the stair climbing device 1 showing a state in which the elevating body 12 has risen to the middle of the stairs.

FIG. 4 is a graph showing the relationship between the pressure p in the first telescopic tube 5, the moving distance S of the elevating body 12, and the time t when the elevating body 12 is raised from the lower floor 2 to the upper floor 3 only by suction. It is.

5 shows the second telescopic tube 2 when the elevating body 12 is raised from the lower floor 2 to the upper floor 3 only by supplying air.
It is a graph which shows the pressure p in 0, the moving distance S of the raising / lowering body 12, and time t.

FIG. 6 is a graph showing a relationship between a moving distance S of the elevating body 12 and a time t when the elevating body 12 is raised from the lower floor 2 to the upper floor 3 by suction and supply of air.

FIG. 7 is a cross-sectional view showing a lift guide rail 70 according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stair elevating device 2 Lower floor 3 Upper floor 4 Stairs 5 First telescopic tube 6 First support part 7 First pressure source 12 Elevator 14, 70 Elevator guide rail 16 Second pressure source 18 Second support part 20 Second Telescopic tube

Claims (1)

(57) [Claims] 1. A lift body, a lift guide rail provided along a stair provided from a lower floor to an upper floor of an existing building to guide the lift body, and one of the lower floor and the upper floor A telescopic tube which is provided over a support portion and a lifting / lowering body provided on the floor, and whose inner space is filled with gas, and which can expand and contract in the tube axis direction, and contracts the telescopic tube by sucking gas in the telescopic tube A suction pressure source, a second support portion provided on one of the lower floor and the upper floor, and the elevating body, the inner space being filled with gas, and expanding and contracting in the pipe axis direction. A stair climbing and lowering device, comprising: a second telescopic tube capable of being supplied; and a supply pressure source for supplying a gas into the second telescopic tube to expand the second telescopic tube.