JP6758682B2 - Human-powered staircase evacuation vehicle - Google Patents

Description

The present disclosure relates to a human-powered staircase evacuation vehicle that carries a person who cannot go up and down the stairs on his own (a person who is in a position to receive rescue (also referred to as a "rescued person")) and goes up and down the stairs.

Wheelchairs and luggage-carrying carts can stably carry people or luggage when traveling on flat ground. However, it was difficult to drive when there was a step or when going up and down stairs.

Therefore, there is a technique relating to a wheelchair including a three-wheel caster capable of driving the wheelchair even if there is a step (see, for example, Patent Document 1). There is also a technique relating to a wheelchair capable of traveling on stairs (see, for example, Patent Document 2). Further, there is a technique related to a wheelbarrow for carrying luggage that can travel on stairs (see, for example, Patent Documents 3 to 5). In addition, the applicant for this patent has proposed a sitting descent device for evacuation of stairs (see, for example, Patent Document 6).

Japanese Unexamined Patent Publication No. 2000-135248 Registered Utility Model No. 3001961 Japanese Unexamined Patent Publication No. 8-156798 Japanese Unexamined Patent Publication No. 11-22001 Registered Utility Model No. 3199396 JP-A-2007-210525

However, the wheelbarrows for carrying luggage disclosed in Patent Documents 3 to 5 are for carrying luggage, and cannot safely carry people. Further, the wheelchair disclosed in Patent Document 1 merely discloses a three-wheel caster for crossing a step, and cannot move up and down stairs. Further, although it is described that the wheelchair disclosed in Patent Document 2 can run on the stairs, the timing at which the front wheels and the rear wheels cross the steps is the length of the tread of the stairs and the rise of the stairs. Since it fluctuates depending on the height, it is not possible to handle various stairs, and it is not possible to raise and lower the stairs in a stable manner. In particular, in an emergency, it is difficult to safely go up and down the stairs with a person who cannot go up and down the stairs on their own. Further, the technique described in Patent Document 6 is an instrument for descending stairs, and is not considered when climbing stairs. That is, when descending the stairs, it is possible to apply braking while using the friction between the endless belt and the stairs, but when climbing the stairs, the friction between the endless belt and the stairs is rather laborious for the rescuer. Was to be increased. Furthermore, if the braking force of the endless belt is loosened, there is a problem that the braking may not work when the belt is about to fall on the way up the stairs.

The present disclosure provides a human-powered staircase evacuation vehicle that can safely move up and down stairs by carrying a person who cannot go up and down the stairs on its own, and can run safely even on flat ground. The purpose.

As a result of diligent studies, the present inventors have found that the above problems can be solved by using the front wheels as three-wheel casters and arranging the transport belt below the seat portion, and have completed the present invention. That is, the human-powered staircase evacuation vehicle according to the present invention is a human-powered staircase evacuation vehicle capable of ascending and descending stairs while the rescued person is seated, and is a seat for the rescued person, a front leg frame, and a rear leg frame. A rear frame on the backrest side of the seat portion, a rescuer grip portion arranged at the tip portion of the rear frame, a support ring having a shape in which the three tops are symmetrical three times, and the support ring. A three-wheel caster having wheels attached to each top of the rod, a rear wheel caster having at least one wheel, a rod-shaped support member, a head pulley attached to one end side of the rod-shaped support member, and the rod-shaped support member. It has a tail pulley attached to the other end side, a transport belt having a head pulley and a belt wound around the tail pulley, and the three-wheel caster is attached to the front leg frame and the rear wheel. The caster is attached to the hind leg frame, and the transport belt is attached below the seat portion.

In the human-powered staircase evacuation vehicle according to the present invention, it is preferable that the front leg frame has a mechanism for attaching a traction assist belt. The rescuer can easily apply force in the upward direction of the inclination of the stairs by, for example, wrapping the traction assist belt attached to the front leg frame around the waist or hanging it from the shoulder. Therefore, it is possible to reduce the labor and safety of the rescuer (meaning the person in the position of rescue, also referred to as "caregiver") when climbing the stairs.

In the human-powered staircase evacuation vehicle according to the present invention, it is preferable that each wheel of the three-wheel caster is provided with a ratchet mechanism for descent prevention or descent braking. When climbing stairs, reverse driving is prevented and safety can be further improved.

In the human-powered staircase evacuation vehicle according to the present invention, it is preferable that each wheel of the three-wheel caster is provided with a brake mechanism. It is possible to apply the brakes when climbing the stairs, which can further improve safety.

In the human-powered staircase evacuation vehicle according to the present invention, the support wheel has a triangular shape, and each side has a concave arch portion toward the axle of the support wheel, and the head pulley It is preferable that the support wheel is fixed at a position inside the locus drawn by the arch portion when the support wheel rotates about the axle. Of the three wheels of the three-wheel caster, two wheels come into contact with the rise of the stairs and the treads, so that the running is stable when climbing. In addition, since the head pulley does not hit the edge of the stairs, the running is stable when getting off.

In the human-powered staircase evacuation vehicle according to the present invention, the rear leg frame includes a form in which the rear wheel casters are folded and stored so as to approach the three wheel casters.

In the human-powered staircase evacuation vehicle according to the present invention, a lock mechanism for fixing the rear leg frame to the front leg frame in a spread state for traveling on flat ground and a state in which the lock mechanism is unlocked. In the above, it is preferable to have a rear leg frame flip-up mechanism in which the upper end side of the rear leg frame is the center of rotation and the lower end side of the rear leg frame is flipped up to the rear frame side. By flipping up the hind leg frame, it is possible to shift from flat ground running to stair running without changing the height or angle of the rescued seat. Therefore, it is possible to shift to stairs running without making the sitting rescued person feel uneasy.

In the human-powered staircase evacuation vehicle according to the present invention, the flip-up mechanism has a rotary damper at the center of rotation attached to the upper end side of the rear leg frame, and the rotary damper has a maximum X degree (however, however). It has an opening / closing angle of 90 degrees ≤ X ≤ 360 degrees), and the flip-up mechanism has a rotary damper with a spring as the rotary damper, or has a spring and a rotary damper without a spring as the rotary damper. At the same time, the rotational force is continuously applied in the closing direction so that the opening / closing angle of the rotary damper becomes 0 degree, and Y degree (however, Y satisfies 0 degree <Y degree <X degree) or more and X degree or less. When the rotational force at the opening / closing angle is larger than the rotational force at the opening / closing angle of 0 degrees or more and less than Y degrees, and the hind leg frame is locked by the locking mechanism, the rotary damper is Y degrees or more. When the rear leg frame has an opening / closing angle of X degrees or less and the rear leg frame is not locked by the locking mechanism, the rear leg frame has an opening / closing angle of 0 degrees or more and less than Y degrees. It is preferable that it is flipped up. The hind leg frame can be flipped up more smoothly, and the flipped up hind leg frame can be prevented from colliding with the back surface of the rescued person.

In the human-powered staircase evacuation vehicle according to the present invention, the rear leg frame is folded to accommodate the rear wheel casters so that the stairs can be climbed up and down, or the rear leg frame is flipped up so that the stairs can be climbed up and down. Then, it is preferable that the lowermost end of the wheel of the three-wheel caster is below the contact patch of the belt in the normal direction of the contact patch of the belt. It is possible to run smoothly especially when climbing.

In the human-powered staircase evacuation vehicle according to the present invention, it is preferable that the front leg frame has a foldable handle. Rescuers can unfold a foldable handle as they climb the stairs and take it to pull up a human-powered staircase evacuation vehicle.

The human-powered staircase evacuation vehicle according to the present invention has a seat frame that is movably fixed to the front leg frame so as to intersect the front leg frame or fit the front leg frame. The portion frame is provided with an opening limit so as not to open at a predetermined angle or more with respect to the front leg frame, at least a part of the seat for the rescued person is fixed, and the rescued person is rescued. It is preferable to have a handle frame cover configured to be gripped by the rescued person sitting on the seat for the person. When the rescued person grips the handle frame cover, the rescued person's anxiety due to the shaking during transportation can be eliminated.

The human-powered staircase evacuation vehicle according to the present invention has a seat frame that is movably fixed to the front leg frame so as to intersect the front leg frame or fit the front leg frame. The portion frame is provided with an opening limit so as not to open at a predetermined angle or more with respect to the front leg frame, at least a part of the seat for the rescued person is fixed, and the rescued person is rescued. It is preferable that the rescued person sitting on the seat for a person has a ring-shaped belt configured to support the wrist by passing the wrist. By supporting the rescued person's wrist with a ring-shaped belt, the rescued person's anxiety due to shaking during transportation can be eliminated.

According to the present disclosure, a human-powered staircase evacuation vehicle capable of safely ascending and descending stairs by carrying a person who cannot go up and down the stairs on its own and can safely travel even on flat ground is provided. be able to.

It is a side view which shows an example of the deployed state of the human-powered staircase evacuation vehicle which concerns on this embodiment. It is a rear view which shows an example of the deployed state of the human-powered staircase evacuation vehicle which concerns on this embodiment. It is a front view which shows an example of the deployed state of the human-powered staircase evacuation vehicle which concerns on this embodiment. It is the schematic of the transport belt. It is a schematic diagram for demonstrating the mode at the time of ascending and descending the stairs of the human-powered stairs evacuation vehicle which concerns on this embodiment. It is a side view which shows an example of the folded state of the human-powered staircase evacuation vehicle which concerns on this embodiment. It is a rear view which shows an example of the folded state of the human-powered staircase evacuation vehicle which concerns on this embodiment. It is a front view which shows an example of the folded state of the human-powered staircase evacuation vehicle which concerns on this embodiment. It is a schematic diagram for demonstrating the 2nd mode at the time of ascending and descending the stairs of the human power type stairs evacuation vehicle which concerns on this embodiment. It is a rear view which shows the 2nd form of the deployed state of the human-powered staircase evacuation vehicle which concerns on this embodiment. It is a side view which shows the example of the deployed state of the human-powered staircase evacuation vehicle which concerns on this embodiment, and is an example of the form which has the frame cover for a handle and the ring-shaped belt. It is a front view which shows the example of the deployed state of the human-powered staircase evacuation vehicle which concerns on this embodiment, and is an example of the form which has the frame cover for a handle and the ring-shaped belt. It is the schematic which shows the state at the time of the stairs up and down of the human-powered stairs evacuation vehicle which has a frame cover for a handle and a ring belt. It is a side view which shows an example of the deployed state of the human power type staircase evacuation vehicle which concerns on this embodiment, and is an example of the form which has a flip-up mechanism. It is a side view which shows an example of the state which the hind leg frame is flipped up. It is a side view which shows an example of the folded state of the flip-up type human-powered staircase evacuation vehicle. It is sectional drawing for demonstrating an example of a lock mechanism. It is the schematic for demonstrating an example of a flip-up mechanism.

Next, the present invention will be described in detail by showing embodiments, but the present invention is not construed as being limited to these descriptions. The embodiments may be modified in various ways as long as the effects of the present invention are exhibited.

(Structure of stairs evacuation vehicle)
As shown in FIGS. 1 to 4, the human-powered staircase evacuation vehicle 100 according to the present embodiment is a human-powered staircase evacuation vehicle capable of ascending and descending stairs while the rescued person is sitting, and is a seat for the rescued person. Three parts 1, a front leg frame 2, a foldable rear leg frame 3, a back frame 4 on the backrest side of the seat 1, and a rescuer grip portion 5 arranged at the tip of the back frame 4. A three-wheel caster 15 having a support ring 10 having a shape in which the tops 11a, 11b, 11c are symmetrical three times, and wheels 12a, 12b, 12c attached to the tops 11a, 11b, 11c of the support ring 10. A rear wheel caster 21 having at least one wheel 20, a head pulley 30 attached to one end side of a rod-shaped support member 33, a rod-shaped support member 33, and a tail pulley 31 and a head attached to the other end side of the rod-shaped support member 33. It has a transport belt 34 having a belt 32 wound around a pulley 30 and a tail pulley 31, a three-wheel caster 15 is attached to a front leg frame 2, and a rear wheel caster 21 is attached to a rear leg frame 3. A transport belt 34 is attached below the seat 1. As shown in FIG. 2, it is preferable that the front leg frame 2 and the rear leg frame 3 are arranged on the left and right sides of the human-powered staircase evacuation vehicle. In this specification, the term "left and right" refers to the left and right directions of the human-powered staircase evacuation vehicle.

As shown in FIG. 1, the seat frame 6 intersects the front leg frame 2 or is movably fixed so that the seat frame 6 fits the front leg frame 2. At this time, the seat frame 6 is provided with an opening degree limit so as not to open at a predetermined angle or more with respect to the front leg frame 2. The front end of the seat frame 6 is the front end of the seat 1. A support rod 8 is attached to the rear end of the seat frame 6 so as to bridge the left and right sides. The upper end portion of the rear leg frame 3 is rotatably engaged with the support rod 8. A rear wheel caster 21 having at least one wheel 20 is attached to the end of the rear leg frame 3. It is preferable to provide one rear wheel caster 21 on each of the left and right wheels in order to stabilize the vehicle body. At the center of the hind leg frame 3, a support column 9 for bridging the hind leg frames to the left and right is provided. One end side of the stretchable support rod 17 is rotatably engaged with the center of the support column 9. The other end side of the support rod 17 is rotatably engaged with the axle 13 of the three-wheel caster 15. Further, a lower end portion of the rear frame 4 is fixed to the upper end of the front leg frame 2. A rescuer grip portion 5 is arranged at the tip end portion of the rear frame 4. An axle 13 is rotatably attached to the lower end of the front leg frame 2. Support wheels 10 are fixed to both ends of the axle 13. A strut 19 that bridges the left and right is fixed to the joint portion between the front leg frame 2 and the rear frame 4. The seat 1 is made of a cloth made of natural fiber or synthetic fiber, one end of the cloth is fixed to the support column 19, and the other end of the cloth is fixed to the front end of the seat frame 6. A pillow cloth 18 is fixed to the back frame 4 so as to bridge the left and right sides.

In the human-powered staircase evacuation vehicle 100, when the seat frame 6 is expanded with respect to the front leg frame 2, the cloth seat 1 can be expanded and seated. The upper end side of the cloth seat 1 also serves as a waist pad (backrest). Further, when the telescopic support rod 17 is extended, the rear leg frame 3 is expanded so as to move away from the three-wheel caster 15, and the wheels 20 come out. On the other hand, when the stretchable support rod 17 contracts, the rear leg frame 3 is folded so that the wheels 20 approach the three-wheel casters 15, and the rear leg frame 3 is stored.

The three-wheel caster 15 includes a support wheel 10 having a shape in which the three tops 11a, 11b, 11c are symmetrical three times, and wheels 12a, 12b, 12c attached to the tops 11a, 11b, 11c of the support ring 10. Have. It is preferable that the wheels 12a, 12b and 12c have the same diameter. When the axles of the wheels 12a, 12b, and 12c are connected by straight lines, an equilateral triangle is formed. The axles of the wheels 12a, 12b, and 12c are preferably arranged equidistant from the attachment location of the axle 13 of the support wheel 10. The shape formed by the edge of the support ring 10 is not particularly limited as long as this equilateral triangle is maintained. For example, an elongated strut is extended from the rotation axis of the support ring 10 toward the three tops 11a, 11b, 11c. However, as shown in FIG. 1, it is preferable that each side of the equilateral triangle forms a concave arch portion 16 toward the axle 13 of the support wheel 10.

It is preferable that each of the wheels 12a, 12b, 12c of the three-wheel caster 15 is provided with a ratchet mechanism for descent prevention or descent braking. When climbing stairs, reverse driving is prevented and safety can be further improved. The ratchet mechanism has, for example, a ratchet gear 60 having a gear inside an annular member fixed to the side surface of the wheels 12a, 12b, 12c, and a ratchet 61 provided on the support wheel 10. The ratchet 61 is provided with a spring or the like so that an elastic force for restoration acts in one direction, and movement is restricted in the opposite direction. The ratchet 61 meshes with the ratchet gear 60, and the wheels 12a, 12b, 12c can be restricted to rotate in only one direction. When the ratchet 61 is released from the meshing of the ratchet gear 60, the wheels 12a, 12b, and 12c can rotate forward and backward without being restricted. The ratchet mechanism has an off function that keeps the ratchet 61 released from the meshing of the ratchet gear 60. When climbing the stairs, the ratchet 61 may be engaged with the ratchet gear 60 (on state), and at other times, the ratchet may be turned off and the ratchet may be switched on and off. It is preferable to provide a ratchet on-off switch on the rescuer grip portion 5.

It is preferable that each of the wheels 12a, 12b, 12c of the three-wheel caster 15 is provided with a brake mechanism. It is possible to apply the brakes when climbing the stairs, which can further improve safety. As shown in FIG. 1, the brake mechanism has, for example, a gear 70 having a gear inside an annular member fixed to the side surface of the wheels 12a, 12b, 12c, and a claw 71 provided on the support wheel 10. Even when the claw 71 is tilted to either side, an elastic force acts in the direction of restoration, and a spring or the like is set so as to return to the origin. When the claw 71 meshes with the gear 70 and the wheels 12a, 12b, 12c rotate, the stress of returning to the origin of the claw 71 gives the wheels 12a, 12b, 12c a rotational resistance force. When the claw 71 is released from the bite of the gear 70, the wheels 12a, 12b, 12c do not receive the rotational resistance force. The brake mechanism has an off function that keeps the claw 71 released from the meshing of the gear 70. When climbing the stairs, the claw 71 may be engaged with the gear 70 (on state), and at other times, the brake mechanism may be turned on and off. It is possible to increase the braking force by increasing the stress of returning the claw 71 to the origin. It is preferable that the rescuer grip portion 5 is provided with an on-off switch of the brake mechanism.

The brake mechanism may be, for example, a mechanism that allows the obstruction rods to be inserted and removed from the spoke portions of each wheel of the three-wheel caster 15 at the same time (not shown). The brake is applied when the obstruction bar is inserted, and the brake is turned off when the obstruction bar is removed. It is preferable that the rescuer grip portion 5 is provided with an on-off switch of the brake mechanism.

As shown in FIG. 4, the transport belt 34 includes a rod-shaped support member 33, a head pulley 30 attached to one end side of the rod-shaped support member 33, and a tail pulley 31 attached to the other end side of the rod-shaped support member 33. , Has a belt 32 wound around a head pulley 30 and a tail pulley 31. As the belt 32, various belts such as a V-belt having a V-shaped or trapezoidal cross section, a flat belt having a rectangular cross section, or a crawler "Crawler" (endless belt, infinite track) can be applied. Further, it is preferably an endless belt. The head pulley 30 is rotatably fixed to one end side of the rod-shaped support member 33, and the tail pulley 31 is rotatably fixed to the other end side of the rod-shaped support member 33. The belt 32 is wound around the head pulley 30 and the tail pulley 31 so as to have tension. Braking acts on the transport belt 34 by the frictional force acting between the belt 32 and the rod-shaped support member 33 and the rotational frictional force during the winding rotation of the belt 32. In particular, the frictional force acting between the belt 32 and the rod-shaped support member 33 becomes larger when the belt 32 comes into contact with the stairs so as to enter the stairs. The belt 32 is restrained by the stairs by biting into the edge 82 of the stairs, but in order to further increase the restraining force, an uneven pattern may be provided on the surface of the belt. As shown in FIG. 1, the transport belt 34 is fixed to the L-shaped support member 35. When ascending or descending the stairs (particularly when descending), the contact patch on the lower side of the belt 32 comes into contact with the edge 82 of the stairs to prevent the vehicle from suddenly traveling. Further, the stability of running is enhanced by simultaneously contacting the contact patch on the lower side of the belt 32 so as to straddle the upper and lower edges of the stairs. As shown in FIG. 2, it is preferable that the transport belts 34 are arranged one on each side. The stability of running can be further improved.

As shown in FIG. 1, the tip portion of the L-shaped support member 35 on the lower side of the L-shape is rotatably fixed to the front leg frame 2 so as to overlap the axle of the three-wheel caster 15 (axle 13 in FIG. 2). .. The fixed portion of the tip portion of the L-shaped support member 35 on the lower side of the L-shape may be shifted from the axle 13. The L-shaped upper portion of the L-shaped support member 35 is rotatably fixed to the support rod 8. By lengthening or shortening the L-shaped lower support column of the L-shaped support member 35, it is possible to increase or decrease the distance between the transport belt 34 and the axle 13. Then, the transport belt 34 is attached below the seat portion 1 by the L-shaped support member 35.

In the human-powered staircase evacuation vehicle 100 according to the present embodiment, the support wheel 10 has a triangular shape, and each side forms a concave arch portion 16 toward the axle 13 of the support wheel 10. The head pulley 30 is preferably fixed at a position inside the locus drawn by the arch portion 16 when the support wheel 10 rotates about the axle 13. As shown in FIG. 5, of the three wheels 12a, 12b, 12c of the three-wheel caster 15, the two wheels 12b, 12c come into contact with the rising 81 of the stairs and the tread 80, so that the traveling during ascending and descending is stable. Further, since the head pulley 30 does not hit the edge portion 82 of the stairs, the traveling during ascending and descending is stable.

In the human-powered staircase evacuation vehicle 100 according to the present embodiment, when the rear leg frame 3 is folded to accommodate the rear wheel casters 21 so that the stairs can be raised and lowered, the three wheels are in the normal direction of the contact patch 34a of the belt 34. It is preferable that the lowermost ends of the wheels 12a, 12b, 12c of the caster 15 are below the ground contact surface 34a of the belt 34. It is possible to run smoothly especially when climbing.

In the human-powered staircase evacuation vehicle 100 according to the present embodiment, it is preferable that the rear wheel caster 21 can be stored above the ground contact surface 34a of the transport belt 34. As shown in FIG. 5, the rear wheel casters 21 do not interfere with the ascent and descent of the stairs, and the rear wheel casters 21 are protected by the transport belt 34, so that the occurrence of failure can be suppressed. Can be done.

In the human-powered staircase evacuation vehicle 100 according to the present embodiment, the front leg frame 2 preferably has attachment mechanisms 40a and 40b for the traction assist belt 43. The attachment mechanisms 40a and 40b are preferably attached to the upper left and right ends of the front leg frame 2. The mounting mechanisms 40a and 40b are holes for hooking, for example. As shown in FIG. 5, the traction assist belt 43 is attached with a string 42a having a hook 41a tied at one end and a string 42b having a 41b tied to one end. The rescuer wraps the traction assist belt 43 around his waist or hangs it from his shoulder, and when necessary, hooks 41a on the mounting mechanism 40a and hooks 41b on the mounting mechanism 40b, allowing the rescuer to hang a human-powered staircase evacuation vehicle. It is possible to make it easier to apply force in the upward direction 44 of the inclination of the stairs with respect to 100. Therefore, the safety when going up and down the stairs can be further improved. The traction assist belt 43 may have a buckle so that it can be easily wrapped around the waist or hung from the shoulder. Although the number of strings attached to the traction assist belt 43 is shown in FIG. 5, it may be one or three or more.

As shown in FIG. 7, the mounting mechanisms 40c and 40d may be mounted on both ends of the support column 19.

6 to 8 show a form when the human-powered staircase evacuation vehicle 100 according to the present embodiment is folded. It can be folded compactly when not in use. By pushing the stoppers 46a and 46b shown in FIG. 2 into the rear frame 4, the stoppers 46a and 46b can be folded as shown in FIG. At this time, the rear frame 4 is deeply inserted into the support pipe 47 that supports the rear frame 4.

The human-powered staircase evacuation vehicle 100 according to the present embodiment preferably has a foldable handle 45 in addition to the mounting mechanisms 40a and 40b or instead of the mounting mechanisms 40a and 40b. 9 and 10 show a form in which both the mounting mechanisms 40a and 40b and the foldable handle 45 are provided. As shown in FIG. 10, for example, the handle 45 is a frame that is bent in a U shape, and both ends of the frame are foldably fixed to the left and right upper ends of the front leg frame 2. In FIG. 9, the handle 45 shown by the dotted line shows the folded state, and the handle 45 shown by the solid line shows the unfolded state. In the unfolded state, the handle 45 can be maintained in the unfolded state by a stopper (not shown) for the handle 45. As shown in FIG. 13, the rescuer 84 can pull the human-powered staircase evacuation vehicle 100 upward on the stairs by holding the handle 45 in the deployed state. In addition, while pulling up the human-powered staircase evacuation vehicle 100 with the handle 45, the traction assist belt 43 attached to the attachment mechanisms 40a and 40b may be wrapped around the waist or hung from the shoulder and used together.

As shown in FIGS. 11 and 12, in the human-powered staircase evacuation vehicle 100 according to the present embodiment, the human-powered staircase evacuation vehicle 100 is movably fixed to the front leg frame 2 so as to intersect the front leg frame 2 or fit the front leg frame 2. The seat frame 6 is provided with an opening limit so as not to open at a predetermined angle or more with respect to the front leg frame 2, and the seat frame 6 has at least a seat portion 1 for a rescued person. It is preferable to have a handle frame cover 48 which is partially fixed and is configured to be gripped by the rescued person sitting on the rescued person's seat 1. When the rescued person grips the handle frame cover 48, the rescued person's anxiety due to the shaking during transportation can be eliminated.

The handle frame cover 48 is a tubular member having both ends open, and is preferably attached to the seat frame 6 by inserting the seat frame 6 into the cylinder. The material of the handle frame cover 48 is not particularly limited, but it is preferably a non-slip and light material such as rubber. It is preferable that the frame cover 48 for the handle is subjected to anti-slip processing such as making irregularities according to the shape of the finger.

As shown in FIGS. 11 and 12, in the human-powered staircase evacuation vehicle 100 according to the present embodiment, the human-powered staircase evacuation vehicle 100 is movably fixed to the front leg frame 2 so as to intersect the front leg frame 2 or fit the front leg frame 2. The seat frame 6 is provided with an opening limit so as not to open at a predetermined angle or more with respect to the front leg frame 2, and the seat frame 6 has at least a seat portion 1 for a rescued person. It is preferable to have a ring-shaped belt 49 which is partially fixed and is configured so that the rescued person sitting on the rescued person's seat 1 supports the wrist by passing the wrist through the wrist. By supporting the rescued person's wrist with the ring-shaped belt 49, it is possible to eliminate the anxiety of the rescued person due to the shaking during transportation.

The ring-shaped belt 49 is preferably attached to the tip of the seat frame 6 by an attachment such as a carabiner. Further, it is preferable that the ring-shaped belt 49 is configured so that the size of the ring can be adjusted according to the size of the wrist of the rescued person with a buckle or the like.

As shown in FIG. 13, when the human-powered staircase evacuation vehicle 100 has either one or both of the handle frame cover 48 and the ring-shaped belt 49, the rescued person 83 grips the handle frame cover 48 or has a ring shape. By fixing the wrist to the belt 49, it is possible to get on the human-powered staircase evacuation vehicle 100 more safely and with more peace of mind.

The human-powered staircase evacuation vehicle 100 preferably has both a handle frame cover 48 and a ring-shaped belt 49. In particular, a person with weak grip strength such as an elderly person can get on the human-powered staircase evacuation vehicle 100 more safely and with more peace of mind by passing the wrist through the ring-shaped belt 49 and further grasping the handle frame cover 48. ..

In FIGS. 1 to 13, a mode in which the rear leg frame 3 is folded and stored so that the rear wheel caster 21 approaches the three-wheel caster 15 (hereinafter, may be referred to as a foldable human-powered staircase evacuation vehicle) has been described. In the present embodiment, as shown in FIGS. 14 to 16, the rear leg frame 3 may be flipped up and stored (hereinafter, may be referred to as a flip-up type human-powered staircase evacuation vehicle). Next, the flip-up type human-powered staircase evacuation vehicle 200 will be described with reference to FIGS. 14 to 16. The flip-up type human-powered staircase evacuation vehicle 200 has the same basic configuration as the foldable human-powered staircase evacuation vehicle 100 except that the rear leg frame 3 is flipped up. Here, different configurations will be mainly described, and the description of common configurations may be omitted.

In the human-powered staircase evacuation vehicle 200 according to the present embodiment, the lock mechanism 50 for fixing the rear leg frame 3 to the front leg frame 2 in an unfolded state for traveling on flat ground and the lock of the lock mechanism 50 are outside. In this state, it is preferable to have a rear leg frame 3 flip-up mechanism 51 that flips the lower end side of the rear leg frame 3 toward the rear frame 4 with the upper end side of the rear leg frame 3 as the center of rotation.

The lock mechanism 50 is a mechanism for fixing the rear leg frame 3 at a predetermined position. An example of the lock mechanism 50 will be described with reference to FIG. The lock mechanism 50 is provided on, for example, a stretchable support rod 90 having an outer pipe 91 and an inner pipe 92 inserted into the outer pipe 91. The support rod 90 is a component corresponding to the support rod 17 (for example, shown in FIG. 1) of the foldable human-powered staircase evacuation vehicle 100. The support rod 90 of the flip-up human-powered staircase evacuation vehicle 200 and the support rod 17 of the foldable human-powered staircase evacuation vehicle 100 are rotatably engaged with a support column 9 having one end bridging the left and right sides of the rear leg frame 3. Although it is common in that, in the support rod 17 of the foldable human-powered staircase evacuation vehicle 100, the other end side is rotatably engaged with the axle 13 of the three-wheel caster 15, whereas the flip-up type human-powered staircase evacuation vehicle The support rod 90 of the 200 is different in that the other end side is rotatably engaged with the support rod 8 (for example, shown in FIG. 2) that bridges the left and right sides of the seat frame 6.

In the lock mechanism 50 shown in FIG. 17, the inner pipe 92 has a through hole 92a provided on the side surface, a push button 93 arranged in the inner pipe 92, and a spring 94 fixed to the push button 93. , The push button 93 is configured to be able to come and go from the through hole 92a by the force of the spring 94. On the other hand, the outer pipe 91 has an engaging hole 91a that engages with the push button 93 of the inner pipe 92. Then, as shown in FIG. 17, when the push button 93 is engaged with the engaging hole 91a, the inner pipe 92 is fixed to the outer pipe 91. As a result, the hind leg frame 3 is fixed at a predetermined position. The predetermined position is a position where the rear leg frame 3 is extended with respect to the front leg frame 2 for traveling on level ground. Further, when the push button 93 is pushed in, the lock is released, the inner pipe 92 slides with respect to the outer pipe 91, and the support rod 90 can be expanded and contracted. As a result, the hind leg frame 3 becomes rotatable. Although FIG. 17 shows a form in which the spring 94 is a bar spring as an example, the present invention is not limited to this, and may be, for example, a leaf spring, a torsion coil spring, or a compression coil spring. Further, the present invention is not limited to the lock mechanism 50 shown in FIG. 17, and a well-known fixing mechanism may be adopted as the lock mechanism 50.

The flip-up mechanism 51 is a mechanism that rotates the lower end side of the rear leg frame 3 toward the rear frame 4 with the upper end portion of the rear leg frame 3 as the rotation axis. An example of the flip-up mechanism 51 will be described with reference to FIG. In the human-powered staircase evacuation vehicle 200 according to the present embodiment, the flip-up mechanism 51 has a rotary damper at the center of rotation attached to the upper end side of the rear leg frame 3, and the rotary damper has a maximum of X degrees ( However, it has an opening / closing angle of 90 degrees ≤ X ≤ 360 degrees), and the flip-up mechanism 51 has a rotary damper with a spring as a rotary damper, or a spring and a rotary damper without a spring as the rotary damper. At the same time, it keeps applying a rotational force in the closing direction so that the opening / closing angle of the rotary damper becomes 0 degrees, and Y degrees (however, Y satisfies 0 degrees <Y degrees <X degrees) or more and X degrees or less. When the rotational force at the opening / closing angle of is larger than the rotational force at the opening / closing angle of 0 degrees or more and less than Y degrees, and the rear leg frame 3 is locked by the lock mechanism 50, the rotary damper is Y degrees or more and X. When the opening / closing angle is less than or equal to the degree and the rear leg frame 3 is not locked by the lock mechanism 50, the rear leg frame 3 is flipped up so that the rotary damper has an opening / closing angle of 0 degree or more and less than Y degree. It is preferable that the The elastic force of the spring makes it possible to flip up the hind leg frame 3 more smoothly, and the braking force of the rotary damper prevents the hind leg frame 3 that is flipped up from colliding with the back surface of the rescued person.

The flip-up mechanism 51 has a rotary damper. In this embodiment, the rotary damper includes a spring-loaded rotary damper and a springless rotary damper. A rotary damper with a spring is a component in which a spring and a rotary damper are integrated. Further, when the rotary damper is a rotary damper without a spring, the flip-up mechanism 51 has a spring together with the rotary damper without a spring.

When the flip-up mechanism 51 has a rotary damper with a spring, the rotary damper with a spring gives a rotational force that the spring rotates the lower end side of the rear leg frame 3 toward the rear frame 4, and the rotary damper It is attached to the upper end of the rear leg frame 3 so as to brake the rotational force generated by the spring. At this time, the rotation axis of the rotary damper with a spring becomes the central axis of rotation of the rear leg frame 3. The spring is not particularly limited as long as it can apply a rotational force in the direction in which the hind leg frame 3 is flipped up.

When the flip-up mechanism 51 has a spring and a rotary damper without a spring, the spring is attached to the upper end portion of the rear leg frame 3 so as to apply a rotational force to the rear frame 4 side on the lower end side of the rear leg frame 3. Be done. The spring is not particularly limited as long as it can apply a rotational force in the direction in which the hind leg frame 3 is flipped up. Further, the rotary damper without a spring is attached to the upper end portion of the rear leg frame 3 so as to brake the rotational force generated by the spring. At this time, the rotation axis of the rotary damper without a spring becomes the central axis of rotation of the rear leg frame 3.

The rotary damper is a component that brakes the rotational force generated by the spring. The rotary damper has an opening / closing angle of 0 degrees or more and X degrees or less. The hind leg frame 3 rotates within the opening / closing angle of the rotary damper. The rotary damper preferably has a region where the braking force is relatively high and a region where the braking force is relatively low within the opening / closing angle. More specifically, the region where the opening / closing angle is 0 degrees or more and less than Y degrees is defined as the region where the braking force is relatively high, and the region where the opening / closing angle is Y degrees or more and X degrees or less is defined as the region where the braking force is relatively low. .. As a result, the rotational force of the spring is more greatly braked in the region where the opening / closing angle is 0 degrees or more and less than Y degrees with respect to the region where the opening / closing angle is Y degrees or more and X degrees or less. Therefore, the rotational force at the opening / closing angle of Y degree or more and X degrees or less is larger than the rotational force at the opening / closing angle of 0 degrees or more and less than Y degrees. As a result, immediately after the lock by the lock mechanism 50 of the rear leg frame 3 is released, the rear leg frame 3 is smoothly flipped up (a region where the opening / closing angle is Y degree or more and X degree or less). Then, when the rear leg frame 3 is flipped up to a certain height, the speed at which the rear leg frame 3 is flipped up becomes slow, and it is possible to prevent the rear leg frame 3 from colliding with the back surface of the rescued person. (A region where the opening / closing angle is 0 degrees or more and less than Y degrees). In FIG. 18, as an example, a form in which X is 180 degrees and Y is 90 degrees is shown, but the present invention is not limited to this.

The rotary damper is preferably attached to the upper end portion of the rear leg frame 3 so that the direction in which the opening / closing angle is Y degree is above the transport belt 34. Since the rear leg frame 3 is smoothly flipped up above the transport belt 34, the rear leg frame 3 can be smoothly flipped up to a position where it does not interfere with the rescuer who operates the human-powered staircase evacuation vehicle 200. .. For example, in FIG. 18, the direction in which the opening / closing angle of the rotary damper is 0 degrees is the vertical upward direction, but the direction in which the opening / closing angle of the rotary damper is 0 degrees is 40 degrees in the direction of the rear frame 4 with respect to the vertical direction. By shifting the degree, the direction in which the opening / closing angle is Y degree may be set above the transport belt 34.

In the flip-up type human-powered staircase evacuation vehicle 200, the upper end portion of the rear leg frame 3 is attached to the L-shaped support member 35 as shown in FIG. 14, or the left and right portions of the seat frame 6 are attached as shown in FIG. It may be attached to the support rod 8 that bridges the above. Further, the present invention is not limited to the flip-up mechanism 51 shown in FIG. 18, and a well-known flip-up mechanism may be adopted as the flip-up mechanism 51.

(how to use)
Next, an example of how to use the human-powered staircase evacuation vehicle 100 according to the present embodiment will be described. When moving on level ground, as shown in FIG. 1, the rear leg frame 3 is expanded to bring the wheels 20 of the rear wheel casters 21 into contact with the ground. The rescuer (or a caregiver) holds the rescuer grip portion 5 and runs the human-powered staircase evacuation vehicle 100.

Next, an operation example when climbing stairs will be described. When traveling on level ground, the rescuer pulls the human-powered staircase evacuation vehicle 100 to approach the stairs. That is, the rear wheel caster 21 faces the stairs. When approaching the stairs, the rescuer folds the rear leg frame 3 and stores the rear wheel casters 21 above the ground plane 34a of the transport belt 34, as shown in FIG. Next, the tail pulley 31 side of the transport belt 34 is brought closer to the stairs, and the ground contact surface 34a of the transport belt 34 is placed on the edge of the stairs 82. The rescuer pulls up the human-powered staircase evacuation vehicle 100 in the upward direction 44 of the stairs while wrapping the traction assist belt 43 around his waist or striking it from his shoulder. At this time, since the belt 32 of the transport belt 34 comes into contact with the edge portion 82 of the stairs, it moves while winding and rotating between the head pulley 30 and the tail pulley 31 in accordance with the movement of climbing the stairs. Since the belt 32 of the transport belt 34 contacts only the one-stage edge portion 82, contacts at the same time as the continuous two-stage edge portion 82, or contacts at the same time as the continuous three-stage edge portion 82, in each case, , Contributes to improving the stability of the human-powered staircase evacuation vehicle 100. Further, each wheel 12a, 12b, 12c of the three-wheel caster 15 rises one wheel each time the stairs are climbed one step. That is, one of the wheels of the three-wheel caster 15 is always placed on the tread plate of the stairs. At this time, since the arch portion 16 goes up the stairs while sliding in contact with the edge portion 82 of the stairs, stability is ensured when the three-wheel caster 15 goes up the stairs. Further, since two of the three wheels 12a, 12b, and 12c of the three-wheel caster 15 come into contact with the rise of the stairs and the tread plate, the running when ascending is stable. Further, since the transport belt 34 is in contact with at least one of the edges 82 of the stairs, the traveling when ascending is stable regardless of the movement of the three-wheel caster 15. Here, since the head pulley 30 side of the transport belt 34 may be separated from the edge 82 of the stairs due to the movement of the three-wheel caster 15, the resistance when climbing is reduced. Further, it is preferable that the ratchet mechanism (60,61) or the braking mechanism (70,71) for descent prevention or descent braking is turned on. When climbing stairs, reverse driving is prevented and safety can be further improved. After climbing the stairs, switch to the flat ground driving state. That is, as shown in FIG. 1, the rear leg frame 3 is expanded to bring the wheels 20 of the rear wheel casters 21 into contact with the ground.

Next, an operation example when going down the stairs will be described. When traveling on level ground, the rescuer pushes the human-powered staircase evacuation vehicle 100 to approach the stairs. That is, the three-wheel caster 15 faces the stairs. When approaching the stairs, the rescuer folds the rear leg frame 3 and stores the rear wheel casters 21 above the ground plane 34a of the transport belt 34, as shown in FIG. Next, the wheels 12a, 12b, and 12c of the three-wheel caster 15 are lowered one by one for each step down the stairs. That is, one of the wheels of the three-wheel caster 15 is always placed on the tread plate of the stairs. At this time, since the arch portion 16 comes into contact with the edge portion 82 of the stairs and descends the stairs while sliding, stability is ensured when the three-wheel caster 15 descends the stairs. Further, since two of the three wheels 12a, 12b, and 12c of the three-wheel caster 15 come into contact with the rise of the stairs and the tread plate, the running during descent is stable. When the arch portion 16 comes into contact with the edge portion 82 of the stairs and moves while sliding, if the head pulley 30 is fixed at a position inside the locus drawn by the arch portion 16, the head pulley 30 does not hit the edge portion 82 of the stairs. The edge portion 82 can be crossed, and then the ground contact surface 34a of the transport belt 34 rides on the edge portion 82 of the stairs. The rescuer pulls the human-powered staircase evacuation vehicle 100 upward to the slope of the stairs 44 while wrapping the tow assist belt 43 around the waist or striking it from the shoulder, while pulling the human-powered staircase evacuation vehicle 100 below the stairs. I will take it down to. At this time, since the belt 32 of the transport belt 34 comes into contact with the edge portion 82 of the stairs, it moves while winding and rotating between the head pulley 30 and the tail pulley 31 in accordance with the movement of going down the stairs. Since the belt 32 of the transport belt 34 comes into contact with the one-step edge portion 82, at the same time as the continuous two-step edge portion 82, or at the same time as the continuous three-step edge portion 82, braking works and human power is applied. Contributes to improving the stability of the type staircase evacuation vehicle 100. Further, it is preferable that the brake mechanism (70, 71) is turned on. Braking works when going down the stairs, which can improve safety. After going down the stairs, switch to the flat ground driving state. That is, as shown in FIG. 1, the rear leg frame 3 is expanded to bring the wheels 20 of the rear wheel casters 21 into contact with the ground.

Up to this point, the usage of the foldable human-powered staircase evacuation vehicle 100 has been explained. The method of using the flip-up type human-powered staircase evacuation vehicle 200 is the same as the method of using the foldable human-powered staircase evacuation vehicle 100, except that the method of storing the rear leg frame 3 when ascending and descending the stairs is different.

In the flip-up type human-powered staircase evacuation vehicle 200, when traveling on flat ground, as shown in FIG. 14, the rear leg frame 3 is fixed to the front leg frame 2 in a state of being expanded for flat ground traveling by the lock mechanism 50. There is. Upon approaching the stairs, the rescuer presses the push button 93 (shown in FIG. 17) of the locking mechanism 50 to unlock the hind leg frame 3, and as shown in FIG. 15, the hind leg frame 3 is moved to the back frame 4. Bounce up to the back side. At this time, the rear leg frame 3 is continuously applied with a rotational force in the closing direction so that the opening / closing angle of the rotary damper becomes 0 degrees by the flip-up mechanism 51, so that the rear leg frame 3 is maintained in the flip-up state even if it is not fixed. However, a fixing mechanism (not shown) for fixing the hind leg frame 3 in a flipped-up state may be provided. After ascending and descending the stairs, the rear leg frame 3 is lowered to bring the wheels 20 of the rear wheel casters 21 into contact with the ground. Then, as shown in FIG. 17, the push button 93 of the lock mechanism 50 is automatically engaged with the engaging hole 91a, and as shown in FIG. 14, the rear leg frame 3 travels on a flat ground with respect to the front leg frame 2. It is fixed in the unfolded state for use. Further, when not in use, it can be folded compactly as shown in FIG. The folding method is the same as that of the foldable human-powered staircase evacuation vehicle 100. At this time, the rear leg frame 3 is continuously applied with a rotational force in the closing direction so that the opening / closing angle of the rotary damper becomes 0 degrees by the flip-up mechanism 51, so that the rear leg frame 3 is maintained in the flip-up state even if it is not fixed. However, a fixing mechanism (not shown) for fixing the hind leg frame 3 in a flipped-up state may be provided.

In the foldable human-powered staircase evacuation vehicle 100, when the rear leg frame 3 is folded, it is necessary to temporarily tilt the evacuation vehicle 100 forward in the process of moving the rear leg frame 3 forward. At this time, since the rescued person's seat 1 on which the rescued person is sitting also tilts forward, there is a risk that the rescued person may feel anxious about being thrown forward. On the other hand, in the flip-up type human-powered staircase evacuation vehicle 200, by flipping up the hind leg frame 3, the vehicle shifts from flat ground running to stair running without changing the height or angle of the rescued person's seat 1. be able to. Therefore, it is possible to shift to stairs running without making the sitting rescued person feel uneasy.

100,200 Human-powered staircase evacuation vehicle 1 Seat for rescued person 2 Front leg frame 3 Rear leg frame 4 Rear frame 5 Rescue grip 6 Seat frame 8 Support rod 9 Support 10 Support wheels 11a, 11b, 11c Top 12a , 12b, 12c Wheels 13 Axles 15 Three-wheel casters 16 Arches 17 Support rods 18 Pillow cloth 19 Struts 20 Wheels 21 Rear wheel casters 30 Head pulleys 31 Tail pulleys 32 Belts 33 Rod-shaped support members 34 Transport belts 34a Ground plane 35 L-shaped support Members 40a, 40b, 40c, 40d Mounting mechanism 41a, 41b Hook 42a, 42b String 43 Traction assist belt 44 Inclination of stairs Upward 45 Foldable handle 46a, 46b Stopper 47 Support pipe 48 Handle frame cover 49 Ring belt 50 Lock Mechanism 51 Flip-up mechanism 60 Ratchet gear 61 Ratchet 70 Gear 71 Claw 80 Stairs tread 81 Stairs rise 82 Stair edge 83 Rescue person 84 Rescue person 90 Support rod 91 Outer pipe 91a Engagement hole 92 Inner pipe 92a Penetration Hole 93 Push button 94 Spring

Claims (12)

It is a human-powered staircase evacuation vehicle that can go up and down stairs while the rescued person is sitting.
Rescuer seat and
Front leg frame and
With the hind leg frame,
The back frame on the backrest side of the seat and
A rescuer grip located at the tip of the back frame,
A three-wheel caster having a support wheel having a shape in which three tops are symmetrical three times and a wheel attached to each top of the support wheel.
With rear wheel casters with at least one wheel,
A transport belt having a rod-shaped support member, a head pulley attached to one end side of the rod-shaped support member, a tail pulley attached to the other end side of the rod-shaped support member, and a belt wound around the head pulley and the tail pulley. And have
The three-wheel caster is attached to the front leg frame.
The rear wheel caster is attached to the rear leg frame.
A human-powered staircase evacuation vehicle characterized in that the transport belt is attached below the seat portion. The human-powered staircase evacuation vehicle according to claim 1, wherein the front leg frame has a mechanism for attaching a traction assist belt. The human-powered staircase evacuation vehicle according to claim 1 or 2, wherein each wheel of the three-wheel caster is provided with a ratchet mechanism for descent prevention or descent braking. The human-powered staircase evacuation vehicle according to any one of claims 1 to 3, wherein each wheel of the three-wheel caster is provided with a brake mechanism. The support wheel has a triangular shape, and each side forms a concave arch portion toward the axle of the support wheel.
According to any one of claims 1 to 4, the head pulley is fixed at a position inside the locus drawn by the arch portion when the support wheel rotates about the axle. The listed human-powered staircase evacuation vehicle. The human-powered staircase evacuation vehicle according to any one of claims 1 to 5, wherein the rear leg frame is folded and stored so that the rear wheel casters approach the three-wheel casters. A locking mechanism for fixing the rear leg frame to the front leg frame in an unfolded state for running on level ground, and
In a state where the lock mechanism is unlocked, the rear leg frame flip-up mechanism that flips the lower end side of the rear leg frame toward the rear frame side with the upper end side of the rear leg frame as the center of rotation. The human-powered staircase evacuation vehicle according to any one of claims 1 to 5, wherein the vehicle has. The flip-up mechanism has a rotary damper at the center of rotation attached to the upper end side of the rear leg frame, and the rotary damper has an opening / closing angle of a maximum of X degrees (however, 90 degrees ≤ X ≤ 360 degrees). Have,
The flip-up mechanism has a rotary damper with a spring as the rotary damper, or has a spring and a rotary damper without a spring as the rotary damper, and the opening / closing angle of the rotary damper is 0 degrees. The rotational force is continuously applied in the closing direction, and the rotational force is 0 degrees or more and less than Y degrees when the opening / closing angle is Y degrees (however, Y satisfies 0 degrees <Y degrees <X degrees) or more and X degrees or less. Greater than the rotational force at the opening and closing angle up to
When the hind leg frame is locked by the locking mechanism, the rotary damper has an opening / closing angle of Y degree or more and X degree or less, and
7. The rear leg frame is flipped up so that the rotary damper has an opening / closing angle of 0 degree or more and less than Y degree when the rear leg frame is not locked by the locking mechanism. Human-powered staircase evacuation vehicle described in. When the rear leg frame is folded to accommodate the rear wheel casters so that the stairs can be climbed up and down, or when the rear leg frame is flipped up so that the stairs can be climbed up and down, the method of the ground contact surface of the belt. The human-powered staircase evacuation vehicle according to any one of claims 1 to 8, wherein the lowermost end of the wheel of the three-wheel caster is below the ground contact surface of the belt in the linear direction. The human-powered staircase evacuation vehicle according to any one of claims 1 to 9, wherein the front leg frame has a foldable handle. It has a seat frame that is movably fixed to the front leg frame so as to intersect or fit the front leg frame.
The seat frame
An opening limit is provided so that the front leg frame does not open beyond a predetermined angle.
At least a part of the rescued seat is fixed and
The human-powered staircase evacuation according to any one of claims 1 to 10, further comprising a handle frame cover configured to be gripped by the rescued person sitting on the rescued person's seat. car. It has a seat frame that is movably fixed to the front leg frame so as to intersect or fit the front leg frame.
The seat frame
An opening limit is provided so that the front leg frame does not open beyond a predetermined angle.
At least a part of the rescued seat is fixed and
The invention according to any one of claims 1 to 11, wherein the rescued person sitting on the seat for the rescued person has a ring-shaped belt configured to support the wrist by passing the wrist through the wrist. Human-powered staircase evacuation vehicle.