JPH01133885A - Staircase elevator - Google Patents

Abstract

PURPOSE: To travel a stairway in a state that a person sits on a wheelchair at a place having no power source or at the service interruption by generating the motive power by the manual rowing of an oar so that an elevator body is moved to climb the stairway, and utilizing the self-weight in the down stroke. CONSTITUTION: In the climbing of a stairway, a person gets on an elevator body 1, a switch 7 is turned on, and a wheelchair is stopped by a wheel stopper 6. Then a switch 5 is closed, an oar 4 is moved in such a way that a boat is rowed, the rotation of teeth of a ratchet 13 is transmitted to a one-way clutch 17 and a manual clutch 18 when the oar 4 is located at a rear portion, and the main body 1 is moved up while guided by a lower guide rail 31. In the forward operation of the oar 4, the power is not transmitted, the lowering is inhibited by the clutch 17 even when a feed claw is removed from the ratchet, and the main body 1 is stopped during that time. Then the main body 1 is raised by the backward motion of the oar 4, and the wheelchair climbs the stairway by repeating these processes. When the main body 1 is moved down on the stairway, the switch 5 is opened, and the manual clutch 18 is released, whereby the main body 1 starts its lowering by the self-weight, and the main body 1 is decelerated by the centrifugal brake when the lowering speed is increased, so that the main body 1 can be lowered at a constant speed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a stair lifting device installed on a staircase, and particularly to an improvement of a stair lifting device for a single person in a wheelchair.

[Conventional technology]

Conventionally, since wheelchair users cannot go up and down stairs by themselves, motor-driven rail-type stair climbing devices have been used that allow wheelchair users to get off the wheelchair and sit on another chair to go up and down.

There are also stair lift devices that allow people to go up and down while sitting in a wheelchair. FIG. 8 shows such a stair lift device, and in the figure, 81 is a lift box, 82 is a bottom plate, and 8
3 is a frame body, 84 is a chain, 85 is a guide roller, 86
is the motor, 87 is the reducer, 88 is the drive sprocket, 8
9 is a guide rail, 90 is a lower ramp, and 91 is an upper ramp.

Guide rollers 85 are provided at the left and right ends of the lower surface of the bottom plate 82 of the elevator box 81, and a chain 84 is provided at the center of the lower surface. Further, two guide rails 89 on which guide rollers 85 run are installed on the stairs, and an upper ramp 91 and a lower ramp 90 having handrails are installed at the top and bottom of the stairs.
0 is provided for each. A motor 86 and a speed reducer 87 are provided between the two guide rails 89 to rotate the drive sprocket 8B that engages with the chain 84. When going up and down, a switch installed near the entrance is turned on, the motor 86 is driven, the drive sprocket 88 is rotated via the reducer 87, and the chain 84 is rotated to move the elevator box 81 up and down. .

Furthermore, a stair lifting device as shown in FIG. 9 is also used. In the figure, 92 is the elevator main body, 93 is a guide roller, 9
4 is a wire, 95 is a guide rail, 96 is a pulley, 97
is a hoist, and 98 is a motor.

This stair lift device also drives a motor 98 to provide a winding machine 97.
The lift main body 92 is moved up and down by wires 94, allowing the disabled person to ascend and descend the stairs while remaining in the wheelchair.

[Problems to be solved by the invention]

However, the above-mentioned motor-driven stair climbing device that installs rails on stairs requires a power source, and therefore has the disadvantage that the power source must be brought from a distance depending on the installation location.

SUMMARY OF THE INVENTION An object of the present invention is to provide a stair climbing device that allows a user to ascend and descend stairs while sitting in a wheelchair even in a place without a power source or during a power outage.

[Means for solving problems]

For this purpose, the stair lifting device of the present invention is a stair lifting device that moves the elevator main body up and down along the guide rail installed on the stairs, and includes a guide portion having guide rails on the upper and lower sides, and a stair lifting device that moves the elevator main body along the guide rail. A pulling means for pulling up, rowing oars, and a clutch to which power is transmitted via a ratchet driven by the reciprocating motion of the oars;
A first running gear is connected to the output side of the clutch and engages with one of the guide rails, and a second gear is engaged with the other of the guide rails and whose rotation is transmitted to the centrifugal brake only during descent via the one-way clutch. When moving up, the reciprocating motion of the oars is transmitted to the first running gear via the clutch, and when descending, the clutch is released by the clutch releasing means and the first running gear is provided. It is characterized by freeing the gear and transmitting the rotation of the second running gear to the centrifugal brake to lower its own weight at a constant speed.

[Action and effect of the invention]

In the stair climbing device of the present invention, when climbing stairs, the clutch is closed by a changeover switch, and the oars are reciprocated by rowing. By rowing the oars, the first running gear rotates only in the ascending direction via the ratchet, and the elevator main body is guided by the guide section and ascends the stairs using only human power. When descending, the clutch is released by a changeover switch, the first running gear is freed, and the rotation of the second running gear is transmitted to the centrifugal brake due to its own weight, and the vehicle descends at a constant speed while decelerating.

According to the present invention, power is generated by rowing the oars to move the elevator body to ascend the stairs, and its own weight is used when descending, so even in places without power or during a power outage, the wheelchair can be used. You can go up and down stairs while sitting, and there is no need to remotely control the power source as in the past, so the configuration is not complicated and can be provided at a low price. Also, when you get on the elevator, you can hold the oars in your hands, giving you a sense of security.

〔Example〕

Examples will be described below with reference to the drawings.

FIG. 1 is a perspective view of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof. In the figure, 1 is an elevator main body, 2 is a guide part, 3 is a support member, 4 is an oar, 5 is an elevation changeover switch, 6 is a wheelchair wheel stopper, and 7 is an opening/closing switch for the wheelchair wheel stopper.

The stair lift device of the present invention can be roughly divided into an elevator main body 1 on which a wheelchair rides, and a guide section 2 that is installed on the stairs by a plurality of support members 3 and guides the elevator main body 1. On the side of the elevator main body 1, an oar 4, a lift changeover switch 5, and a wheelchair wheel lock opening/closing switch 7, which are operated by the wheelchair user, are provided at hand height, and inside the elevator main body 1, the wheelchair is connected to the elevator main body 1. Wheelchair wheel stops 6 are provided to prevent the wheelchair from falling.

Further, this will be explained in detail with reference to FIGS. 4 and 5.

4 and 5 are diagrams for explaining the engagement between the elevator main body 1 and the guide portion 2. FIG. 4 is a perspective view of the main part, and FIG. 5 is a sectional view of the main part. In the figure, 11 is a frame, 12 is an arm, 13 is a ratchet, 14°15.16 is a gear, 17 is a first one-way clutch, 18 is a manual clutch, 19
is a cable, 20 is a rotating shaft, 21 is a first running gear, 2
2 is a second running gear, 23 is a second one-way clutch, 24 is a centrifugal brake, 31 is a lower guide rail, 32
is the upper guide rail.

As shown in FIG. 4, frames 11 are provided on both sides of the elevator main body 1 to attach means for engaging with the guide portion 2 to raise and lower the elevator main body 1. At the bottom of the frame 11, a frame 11 is provided for attaching means for raising and lowering the elevator main body 1. Means for lowering is provided at the upper part, and means for lowering is provided at the upper part. As a means for raising the elevator main body 1, an arm 12 for transmitting the reciprocating motion of the oars 4 is connected between the oars 4 and a rotating shaft 20 that is a fulcrum thereof, and the other end of the arm 12 is A ratchet 13 is provided. The ratchet 13 rotates only in the upward direction of the arrow in FIG.
4.15.16 via the first one-way clutch 17
and is transmitted to the manual clutch 18. The first one-way clutch 17 is engaged only in the upward direction and locked to prevent downward movement even when the ratchet feed pawl is separated.

In this case, if the ratchet is provided with a stop pawl in addition to the feed pawl, it is possible to prevent the ratchet from falling more completely. The manual clutch 18 is engaged or released by the lift changeover switch 5 via a cable 19. When going up, the lift changeover switch 5 is closed and the manual clutch 18 is engaged, and when it is going down, it is opened and the manual clutch 18 is released. A first running gear 21 is provided via a manual clutch 18, and a first
The running gear 21 meshes with a lower guide rail 31 provided below the guide portion 2.

As a means for lowering the elevator main body 1, a second running gear 22 is provided on the upper part of the frame 11 via a centrifugal brake 24, and the second running gear 22 has a second one-way clutch 23. It meshes with an upper guide rail 32 provided above the guide part 2.

Next, the operating method will be explained.

When going up the stairs, stand on the elevator main body 1 with your back to the stairs, turn on the wheelchair wheel lock opening/closing switch 7, stop the wheelchair with the wheelchair wheel chocks 6, close the lift changeover switch 5, and hold the oar 4 in your hand. , move like rowing a boat.

When the oar 4 moves backward, the pawl of the ratchet 13 moves in the direction of the arrow in FIG. 4, and several teeth of the ratchet 13 open. The rotation is transmitted to the first one-way clutch 17 and manual clutch 18 via the gears 14, 15, 16, the first traveling gear 21 rotates and is guided by the lower guide rail 31, and the elevator main body 1 rises. . When moving the oar 4 forward, the force is not transmitted by the ratchet 13, and even if the feed pawl comes off the ratchet gear, the first one-way clutch 17 prevents the oar from descending, so the elevator main body 1 is stopped during that time. are doing. Moving the oar 4 backward again causes it to rise, and by repeating this action, it is possible to ascend the stairs. At this time, the second one-way clutch 23 is free, so the centrifugal brake 24 does not operate, and the second traveling gear 22 also rotates while meshing with the upper guide rail 32.

When going down the stairs, the user gets on the elevator main body 1 and stops the wheelchair using the wheelchair wheel stops 6, opens the up/down changeover switch 5, and releases the manual clutch 18 in the same way as when going up. Then, the first running gear 21 becomes free, and the first running gear 21 and the second running gear 22 rotate along the upper guide rail 32 and the lower guide rail 31 due to the weight of the elevator main body 1 and the wheelchair, and the elevator Main body 1 begins to descend.

The rotation of the second running gear 220 is transmitted to the centrifugal brake 24 via the second one-way clutch 23, so when the descending speed increases, the centrifugal brake is applied to decelerate the vehicle, allowing it to descend at a constant speed.

Also, if you want to stop during the descent, close the lift selector switch 5, the manual clutch 18 will engage, and the elevator body 1
can be stopped.

FIGS. 6A to 6C are diagrams showing examples of one-way clutches that can be used in the above embodiment. The figure (A) shows a ratchet type one-way clutch, and in the figure, 61 is an outer ring, 62 is a ratchet, 63 is a ratchet wheel, and 64 is a lease spring. In the figure, 65 is a cam, 66 is a roller, 67 is a spring, and 68 is a hub. The figure (c) shows a sprag type one-way clutch, in which 69 is a sprag, 70 is an outer ring, and 71 is a sprag type one-way clutch.
72 is a spring, 72 is a retainer, and 73 is an inner ring.

In either case, when the outer ring is rotated in the direction of the arrow of the clutch, it is engaged with the inner ring, and when the outer ring is rotated in the direction of the freewheel arrow, it is configured to be in a free state.

FIGS. 7(a) to 7(c) show examples of centrifugal brakes that can be used in the above embodiment, and FIG. 7(a) is an exploded perspective view.
75 is a clutch transfer ring, 76 is a brake shoe assembly, 77 is a drum, 78 is a leaf spring, and 79 is a gap.

In the state shown in Fig. 7 (b) where the ring 77 is not rotating,
Since no centrifugal force is acting, the drum 77 and shoe 76
In the state shown in FIG. 7 (c) where there is a gap 79 between the drum 77 and the ring 77 is rotating without applying the brake, the centrifugal brake is activated and the shoe 76 is pressed against the drum 77, applying the brake. It is configured in such a way.

In the above embodiment, only one side of the guide section was described, but it goes without saying that the rail and running gear are provided on both sides, and the winding mechanism, ratchet mechanism, one-way clutch mechanism, manual clutch, recall mechanism, etc. are provided on one side. It may be provided alone or on both sides as necessary.

As described above, according to the present invention, power is generated by rowing the oars by hand to move the elevator body to ascend the stairs, and when descending, the elevator uses its own weight to descend. Even in places where there is no electricity available or during a power outage, the wheelchair can be used to go up and down stairs while sitting in a wheelchair, and because the configuration is not complicated, it can be provided at a low price. Also, when you get on the elevator, you can hold the oars in your hands, giving you a sense of security.

[Brief explanation of the drawing]

Figures 1 to 5 show embodiments of the present invention; Figure 1 is a perspective view, Figure 2 is a plan view, Figure 3 is a side view, Figure 4 is a perspective view of main parts, and Figure 5 is a perspective view. Main part sectional view, Figures 6 (A) to (C) are diagrams showing examples of one-way clutches, Figures 7 (A) to (C)
1 is a diagram showing an example of a centrifugal brake, and FIGS. 8 and 9 are side views showing a conventional motor-driven rail type stair climbing device. DESCRIPTION OF SYMBOLS 1...Elevator body, 2...Guide part, 4...Oar, 5...Elevation changeover switch, 6...Wheelchair wheel stopper, 11...Frame, 13...Ratchet, 17
...First one-way clutch, 18... Manual clutch, 21... First running gear, 22... Second running gear, 23... Second one-way clutch, 24...
...Centrifugal brake, 31...Lower guide rail, 32
...Top guide rail. Applicant Aisinworth Co., Ltd. (1 other person) Agent Patent attorney Masanobu Hirugawa (3 others) S'-
ffl

Claims (4)

[Claims] (1) A stair lifting device that raises and lowers the elevator main body along guide rails installed on the stairs, which includes a guide section having guide rails on the top and bottom, a pulling means for pulling up the elevator main body along the guide rails, and a hand. Rowing oars, a manual clutch to which power is transmitted via a ratchet and a first one-way clutch driven by the reciprocating motion of the oars, and a first one-way clutch connected to the output side of the manual clutch and engaged with one of the guide rails. The second running gear is engaged with the other side of the guide rail and whose rotation is transmitted to the centrifugal brake only when descending via a second one-way clutch. is transmitted to the first running gear via the ratchet, the first one-way clutch, and the manual clutch, and when descending, the manual clutch is released to free the first running gear, and the second running gear is A stair lift device that transmits rotation to a centrifugal brake and descends under its own weight at a constant speed. (2) The stair lifting device according to claim 1, wherein the manual clutch is released when the lifting switching cable is pulled by rotation of a rotating body to which one end of the lifting switching cable is connected. (3) The stair lift device according to claim 2, wherein the rotary body is rotationally driven by a lift changeover switch. (4) The stair lifting device according to claim 1, wherein the elevator main body is provided with a wheelchair wheel stopper.