JPWO2019058955A1 - Human-powered stair evacuation vehicle - Google Patents

Abstract

The present disclosure provides a human-powered stair evacuation vehicle that allows a person who cannot climb up and down the stairs by himself / herself to safely move up and down the stairs and can travel safely even on a flat ground. A human-powered stair escape vehicle according to the present disclosure includes a seat, a front leg frame, a foldable rear leg frame, a back frame on the backrest side of the seat, and a gripping part disposed at a tip portion of the back frame, A three-wheel caster, a rear-wheel caster having at least one wheel, and a conveyor belt having a belt wound around a head pulley and a tail pulley, the three-wheel caster being attached to the front leg frame, The wheel caster is attached to the rear leg frame, and the conveyor belt is attached below the seat. The front leg frame may have a traction assist belt attachment mechanism, and a rescuer can pull the traction assist belt while wrapping it around the waist or staking it from the shoulder.

Description

  The present disclosure relates to a human-powered stair evacuation vehicle that raises and lowers stairs by carrying a person who cannot climb up and down stairs by himself (refers to a person who is in a position to receive rescue (also referred to as “rescued person”)).

  Wheelchairs and luggage carts can stably carry people or luggage when traveling on flat ground. However, when there is a step, or when going up and down the stairs, traveling is difficult.

  Therefore, there is a technique related to a wheelchair including a three-wheel caster that can cause the wheelchair to travel even if there is a step (see, for example, Patent Document 1). There is also a technique related to a wheelchair that can travel on stairs (see, for example, Patent Document 2). Furthermore, there is a technique related to a wheelbarrow for carrying a luggage that can travel on stairs (see, for example, Patent Documents 3 to 5). Moreover, this patent applicant has proposed the sitting-type descent device for stair evacuation (for example, refer patent document 6).

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

  However, the luggage carts disclosed in Patent Documents 3 to 5 are for carrying luggage and cannot carry people safely. In addition, the wheelchair disclosed in Patent Document 1 only discloses a three-wheel caster for overcoming a step, and cannot move up and down the stairs. Furthermore, although the wheelchair disclosed in Patent Document 2 is described as being able to travel on the stairs, the timing at which the front wheel and the rear wheel get over the steps respectively depends on the length of the tread on the stairs and on the kick. Since it fluctuates depending on the height, it cannot cope with various stairs, and the stairs cannot be raised and lowered stably. Particularly in an emergency, it is difficult to safely climb up and down the stairs by carrying a person who cannot climb up and down by himself. Furthermore, the technique described in Patent Document 6 is a device for lowering stairs, and is not considered when climbing stairs. That is, when descending the stairs, braking can be applied 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 overwhelmed. It was supposed to increase. Furthermore, if the braking force of the endless belt is loosened, there is a problem that braking may not be effective when the belt is about to fall on the way up the stairs.

  The present disclosure provides a human-powered stair evacuation vehicle that allows a person who cannot climb up and down the stairs by himself / herself to safely move up and down the stairs and can travel safely even on a flat ground. Objective.

  As a result of intensive studies, the present inventors have found that the above-mentioned problems can be solved by using a three-wheel caster as the front wheel and disposing the conveyor belt below the seat, thereby completing the present invention. That is, the human-powered stair evacuation vehicle according to the present invention is a human-powered stair evacuation vehicle capable of moving up and down stairs while a rescuer is seated, and includes a rescuer seat, a front leg frame, and a rear leg frame. A rear frame on the back side of the seat, a rescuer grip disposed at the tip of the rear frame, a support ring having a shape in which three tops are three-fold symmetric, and the support ring A three-wheel caster having a wheel attached to each of the top, a rear-wheel caster having at least one wheel, a rod-like support member, a head pulley attached to one end of the rod-like support member, and the rod-like support member. A tail pulley attached to the other end, a transport belt having a belt wound around the head pulley and the tail pulley, and the three-wheel caster is attached to the front leg frame. Ri, the rear wheel caster is attached to the rear leg frame, wherein the conveyor belt is mounted beneath the seat.

  In the human-powered stair escape vehicle according to the present invention, it is preferable that the front leg frame has a pulling assist belt attachment mechanism. For example, the rescuer can easily apply force to the upward direction of the slope of the stairs by wrapping the traction assist belt attached to the front leg frame, for example, on the waist or by staking it from the shoulder. Therefore, it is possible to reduce the labor and safety of a rescuer (referred to as a “caregiver”) who goes up the stairs.

  In the human-powered stair escape vehicle according to the present invention, each wheel of the three-wheel caster preferably includes a ratchet mechanism for descent prevention or descent braking. When going up the stairs, reverse running is prevented and safety can be improved.

  In the human-powered stair escape vehicle according to the present invention, each wheel of the three-wheel caster preferably includes a brake mechanism. It is possible to apply a brake when ascending the stairs, and to improve safety.

  In the human-powered stair escape vehicle according to the present invention, the support wheel has a triangular shape, and each side forms a concave arch portion toward the axle of the support wheel, and the head pulley is It is preferable that the support wheel is fixed at a position inside the locus drawn by the arch when the support wheel rotates around the axle. Out of the three wheels of the three-wheel caster, the two wheels come into contact with the stairs kick-up and the tread, so that the traveling when climbing is stabilized. Moreover, since the head pulley does not hit the edge of the stairs, traveling when getting off is stable.

  In the human-powered stair escape vehicle according to the present invention, the rear leg frame includes a form in which the rear wheel caster is folded and stored so as to approach the three-wheel caster.

  In the human-powered stair evacuation vehicle according to the present invention, the lock mechanism for fixing the rear leg frame to the front leg frame in a state where the rear leg frame is spread for flat ground travel, and the lock mechanism being unlocked And a rear leg frame flip-up mechanism that flips the lower end side of the rear leg frame toward the rear frame with the upper end side of the rear leg frame as the center of rotation. By jumping up the rear leg frame, it is possible to shift from flat ground traveling to staircase traveling without changing the height or angle of the rescuer seat. For this reason, it is possible to shift to staircase travel without causing the sitting rescuer to feel uneasy.

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

  In the human-powered stair evacuation vehicle according to the present invention, when the rear leg frame is folded and the rear wheel caster is accommodated so that the stairs can be raised or lowered, or the rear leg frame is flipped up and the stairs can be raised or lowered. In the normal direction of the ground contact surface of the belt, it is preferable that the lowest end of the wheel of the three-wheel caster is below the ground contact surface of the belt. It can travel smoothly when climbing.

  In the human-powered stair escape vehicle according to the present invention, the front leg frame preferably has a foldable handle. The rescuer can lift the foldable handle when ascending the stairs and pull the man-powered stair escape car with it.

  The human-powered stair escape vehicle according to the present invention includes a seat frame that is movably fixed to the front leg frame so as to intersect the front leg frame or to fit the front leg frame. The opening of the part frame is restricted so that it does not open at a predetermined angle or more with respect to the front leg frame, and at least a part of the seat for the rescuer is fixed, and the rescue target It is preferable to have a handle frame cover configured to be gripped by the rescuer sitting on the person's seat. When the rescuer holds the handle frame cover, the rescuer's anxiety due to shaking during transportation can be eliminated.

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

  According to the present disclosure, there is provided a human-powered stair evacuation vehicle that allows a person who cannot climb up and down the stairs by himself / herself to safely move up and down the stairs and can travel safely even on a flat ground. be able to.

It is a side view which shows an example of the expansion | deployment state of the manpower type stair evacuation vehicle which concerns on this embodiment. It is a rear view which shows an example of the expansion | deployment state of the manpower type stair evacuation vehicle which concerns on this embodiment. It is a front view which shows an example of the expansion | deployment state of the manpower type stair evacuation vehicle which concerns on this embodiment. It is the schematic of a belt for conveyance. It is the schematic for demonstrating the form at the time of the stairs raising / lowering of the manpower type stair evacuation vehicle which concerns on this embodiment. It is a side view which shows an example of the folding state of the manpower type stair evacuation vehicle which concerns on this embodiment. It is a rear view which shows an example of the folding state of the manpower type stair evacuation vehicle which concerns on this embodiment. It is a front view which shows an example of the folding state of the manpower type stair evacuation vehicle which concerns on this embodiment. It is the schematic for demonstrating the 2nd form at the time of stair raising / lowering of the manpower type stair evacuation vehicle which concerns on this embodiment. It is a rear view which shows the 2nd form of the expansion | deployment state of the manpower type stair evacuation vehicle which concerns on this embodiment. It is a side view which shows an example of the expansion | deployment state of the manpower type stair evacuation vehicle which concerns on this embodiment, and is an example of the form which has a frame cover for handles, and a ring-shaped belt. It is a front view which shows an example of the expansion | deployment state of the manpower type stair evacuation vehicle which concerns on this embodiment, and is an example of the form which has a frame cover for handles, and a ring-shaped belt. It is the schematic which shows the state at the time of stair raising / lowering of the manpower type stair evacuation vehicle which has a frame cover for handles, and a ring-shaped belt. It is a side view which shows an example of the expansion | deployment state of the manpower type stair 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 flipped up the back leg frame. It is a side view which shows an example of the folding state of the flip-up type human-powered stair evacuation vehicle. It is sectional drawing for demonstrating an example of a locking mechanism. It is the schematic for demonstrating an example of a flip-up mechanism.

  Next, the present invention will be described in detail with reference to embodiments, but the present invention is not construed as being limited to these descriptions. As long as the effect of the present invention is exhibited, the embodiment may be variously modified.

(Structure of stair evacuation car)
As shown in FIGS. 1 to 4, a human-powered stair evacuation vehicle 100 according to the present embodiment is a human-powered stair evacuation vehicle capable of ascending and descending stairs while a rescuer is seated. Part 1, front leg frame 2, foldable rear leg frame 3, back frame 4 on the backrest side of the seat part 1, rescuer holding part 5 disposed at the tip of the back frame 4, A three-wheel caster 15 having a support wheel 10 having a shape in which the top parts 11a, 11b, and 11c are symmetrical three times, and wheels 12a, 12b, and 12c attached to the top parts 11a, 11b, and 11c of the support wheel 10, A rear wheel caster 21 having at least one wheel 20 and a head pulley 30 attached to one end of the rod-like support member 33 and the rod-like support member 33. A tail pulley 3 attached to the other end of the rod-like support member 33. And a conveyor belt 34 having a belt 32 wound around a head pulley 30 and a tail pulley 31, the three-wheel caster 15 is attached to the front leg frame 2, and the rear wheel caster 21 is connected to the rear leg frame 3. The conveyor belt 34 is attached below the seat portion 1. As shown in FIG. 2, the front leg frame 2 and the rear leg frame 3 are preferably arranged on the left and right sides of the human-powered stair escape vehicle, respectively. In the present specification, the term “left and right” refers to the left and right direction of the human-powered stair escape vehicle.

  As shown in FIG. 1, the seat frame 6 crosses 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 opening limit is provided so that the seat frame 6 does not open with respect to the front leg frame 2 at a predetermined angle or more. The front end of the seat frame 6 is the front end of the seat 1. A support bar 8 is attached to the rear end of the seat frame 6 so as to bridge the left and right. The upper end of the rear leg frame 3 is rotatably engaged with the support bar 8. A rear wheel caster 21 having at least one wheel 20 is attached to the end of the rear leg frame 3. One rear wheel caster 21 is preferably provided on each of the left and right sides to stabilize the vehicle body. A support column 9 for bridging the rear leg frame between the left and right is provided at the center of the rear leg frame 3. One end side of a telescopic support rod 17 is rotatably engaged with the center of the column 9. The other end of the support rod 17 is rotatably engaged with the axle 13 of the three-wheel caster 15. Further, the lower end portion of the rear frame 4 is fixed to the upper end of the front leg frame 2. A rescuer grip 5 is disposed at the tip of the back 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 supporting column 19 that bridges the left and right is fixed to a joint portion between the front leg frame 2 and the rear frame 4. The seat 1 is made of a natural fiber or synthetic fiber cloth, and 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. Pillow cloth 18 is fixed to the back frame 4 so as to bridge the left and right.

  When the seat frame 6 is expanded with respect to the front leg frame 2, the man-powered stair escape vehicle 100 can sit with the cloth seat 1 spread. The upper end side of the cloth seat portion 1 also serves as a waist rest (backrest). When the telescopic support rod 17 is extended, the rear leg frame 3 is expanded away from the three-wheel caster 15 and the wheel 20 comes out. On the other hand, when the telescopic support rod 17 contracts, as shown in FIG. 5, the rear leg frame 3 is folded so that the wheel 20 approaches the three-wheel caster 15, and the rear leg frame 3 is stored.

  The three-wheel caster 15 includes a support wheel 10 having a shape in which three top portions 11a, 11b, and 11c are symmetrical three times, and wheels 12a, 12b, and 12c attached to the top portions 11a, 11b, and 11c of the support wheel 10. Have. The diameters of the wheels 12a, 12b, 12c are preferably equal. When the axles of the wheels 12a, 12b, and 12c are connected by straight lines, a regular triangle is formed. The axles of the wheels 12a, 12b, and 12c are preferably arranged at an equal distance from the place where the axle 13 of the support wheel 10 is attached. The shape formed by the edge of the support wheel 10 is not particularly limited as long as this equilateral triangle is maintained. For example, an elongated column is extended from the rotation axis of the support wheel 10 toward the three top portions 11a, 11b, and 11c. However, 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 as shown in FIG.

  Each wheel 12a, 12b, 12c of the three-wheel caster 15 is preferably provided with a ratchet mechanism for descent prevention or descent braking. When going up the stairs, reverse running is prevented and safety can be improved. The ratchet mechanism includes, for example, a ratchet gear 60 that is fixed to the side surfaces of the wheels 12 a, 12 b, and 12 c and has a gear inside the annular member, and a ratchet 61 that is provided on the support wheel 10. The ratchet 61 is provided with a spring or the like so that a restoring elastic force acts in one direction, and the movement is restricted in the opposite direction. The ratchet 61 can be engaged with the ratchet gear 60, and the wheels 12a, 12b, and 12c can be restricted to rotate in only one direction. When the ratchet 61 is released from the engagement of the ratchet gear 60, the wheels 12a, 12b, and 12c can be rotated forward and backward without being restricted. The ratchet mechanism has an off function that keeps the ratchet 61 released from the engagement of the ratchet gear 60. When going up the stairs, the ratchet 61 may be engaged with the ratchet gear 60 (on state), and in other cases, the ratchet 61 may be turned off and switched on and off. The rescuer grip 5 is preferably provided with a ratchet on-off switch.

  Each wheel 12a, 12b, 12c of the three-wheel caster 15 is preferably provided with a brake mechanism. It is possible to apply a brake when ascending the stairs, and to improve safety. As shown in FIG. 1, the brake mechanism includes, for example, a gear 70 having a gear on the inner side of an annular member fixed to the side surfaces of the wheels 12 a, 12 b, and 12 c, and a claw 71 provided on the support wheel 10. The claw 71 is provided with a spring or the like so that an elastic force acts in a restoring direction even when it is inclined to either side, and returns to the origin. When the claw 71 is engaged with the gear 70 and the wheels 12a, 12b, and 12c are rotated, the stress of the claw 71 returning to the origin gives a rotational resistance force to the wheels 12a, 12b, and 12c. When the claw 71 is released from the engagement of the gear 70, the wheels 12a, 12b, and 12c do not receive the rotational resistance. The brake mechanism has an off function that keeps the claw 71 released from the engagement of the gear 70. When going up the stairs, the claw 71 may be engaged with the gear 70 (on state), and in other cases, the brake mechanism may be turned on and off by turning it off. The braking force can be increased by increasing the stress for returning the origin of the claw 71. It is preferable to provide an on-off switch for the brake mechanism in the rescuer grip 5.

  For example, the brake mechanism may be a mechanism that allows a baffle rod to be inserted into and removed from a spoke portion of each wheel of the three-wheel caster 15 (not shown). The brake is applied when the baffle is inserted, and the brake is turned off when the baffle is removed. It is preferable to provide an on-off switch for the brake mechanism in the rescuer grip 5.

  As shown in FIG. 4, the conveying belt 34 includes a rod-like support member 33, a head pulley 30 attached to one end side of the rod-like support member 33, and a tail pulley 31 attached to the other end side of the rod-like support member 33. And a belt 32 wound around a head pulley 30 and a tail pulley 31. Various belts such as a V-shaped or trapezoidal V-belt, a flat belt with a rectangular cross-section, or a crawler “Crawler” (endless belt, endless track) can be applied to the belt 32. Moreover, it is preferable that it is 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. The conveying belt 34 is braked by the frictional force acting between the belt 32 and the rod-like support member 33 and the rotational frictional force when the belt 32 is wound. 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 staircase so as not to enter the staircase. The belt 32 is restrained by the staircase by biting into the edge 82 of the staircase, but an uneven pattern may be provided on the surface of the belt in order to further increase the restraining force. As shown in FIG. 1, the conveyance belt 34 is fixed to an L-shaped support member 35. When the stairs are raised and lowered (particularly when lowered), the ground contact surface on the lower side of the belt 32 comes into contact with the edge 82 of the stairs, so that the vehicle can be prevented from traveling rapidly. In addition, the stability of running is enhanced by simultaneously contacting the lower grounding surface of the belt 32 so as to straddle the edges of several steps above and below the stairs. As shown in FIG. 2, it is preferable to arrange the conveying belts 34 one by one on the left and right. Driving stability can be further increased.

  As shown in FIG. 1, the L-shaped lower end of the L-shaped support member 35 is rotatably fixed to the front leg frame 2 so as to overlap the axle of the three-wheel caster 15 (the axle 13 of FIG. 2). . The fixed portion of the L-shaped lower end portion of the L-shaped support member 35 may be shifted from the axle 13. The L-shaped upper portion of the L-shaped support member 35 is fixed to the support bar 8 so as to be rotatable. The distance between the conveyor belt 34 and the axle 13 can be increased or decreased by increasing or decreasing the length of the L-shaped lower support column of the L-shaped support member 35. Then, the conveying belt 34 is attached below the seat portion 1 by the L-shaped support member 35.

  In the human-powered stair escape 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 around the axle 13. As shown in FIG. 5, among the three wheels 12a, 12b, and 12c of the three-wheel caster 15, the two wheels 12b and 12c come into contact with the step-up 81 and the tread plate 80, so that traveling during ascent and descent is stabilized. Moreover, since the head pulley 30 does not collide with the edge 82 of the stairs, traveling during ascent and descent is stable.

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

  In the human-powered stair 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 34 a of the conveyor belt 34. As shown in FIG. 5, the rear wheel casters 21 are not hindered from ascending and descending the stairs, and the rear wheel casters 21 are protected by the conveying belt 34, so that the occurrence of failure is suppressed. Can do.

  In the human-powered stair evacuation vehicle 100 according to the present embodiment, the front leg frame 2 preferably has attachment mechanisms 40 a and 40 b for the traction assist belt 43. The attachment mechanisms 40a and 40b are preferably attached to the left and right upper ends of the front leg frame 2, respectively. The attachment 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 42 a with a hook 41 a bound at one end and a string 42 b with 41 b bound at one end. The rescuer wraps the tow assist belt 43 around the waist or hangs from the shoulder, and when necessary, the rescuer hangs the hook 41a on the attachment mechanism 40a and the hook 41b on the attachment mechanism 40b, so that the rescuer can use a human-powered stair escape vehicle. With respect to 100, it is possible to easily apply a force in the upward direction 44 of the staircase. Therefore, the safety at the time of raising and lowering 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 struck from the shoulder. In FIG. 5, the number of the strings attached to the auxiliary pulling belt 43 is two, but it may be one or three or more.

  The attachment mechanisms 40c and 40d may be attached to both end sides of the column 19 as shown in FIG.

  The form when the human-powered stair escape vehicle 100 according to the present embodiment is folded is shown in FIGS. When not in use, it can be folded compactly. By pushing the stoppers 46a and 46b shown in FIG. 2 into the back frame 4, it can be folded as shown in FIG. At this time, the back frame 4 is deeply inserted into the support pipe 47 that supports the back frame 4.

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

  As shown in FIGS. 11 and 12, in the human-powered stair escape vehicle 100 according to the present embodiment, the front leg frame 2 is movably fixed so as to cross the front leg frame 2 or to fit the front leg frame 2. The seat frame 6 is provided with an opening restriction so that the seat frame 6 does not open with respect to the front leg frame 2 at a predetermined angle or more. It is preferable to have a handle frame cover 48 that is partly fixed and configured to be held by a rescuer sitting on the rescuer seat 1. When the rescuer grips the handle frame cover 48, the rescuer's anxiety due to shaking during transportation can be eliminated.

  The handle frame cover 48 is a cylindrical member opened at both ends, and is preferably attached to the seat frame 6 by inserting the seat frame 6 through the cylinder. The material of the handle frame cover 48 is not particularly limited, but is preferably a non-slip and light material such as rubber. The handle frame cover 48 is preferably subjected to anti-slip processing such as unevenness according to the shape of the finger.

  As shown in FIGS. 11 and 12, in the human-powered stair escape vehicle 100 according to the present embodiment, the front leg frame 2 is movably fixed so as to cross the front leg frame 2 or to fit the front leg frame 2. The seat frame 6 is provided with an opening restriction so that the seat frame 6 does not open with respect to the front leg frame 2 at a predetermined angle or more. It is preferable to have an annular belt 49 that is partly fixed and configured to support the wrist when the rescuer sitting on the rescuer's seat 1 passes the wrist. By supporting the wrist of the rescued person with the ring-shaped belt 49, the uneasy feeling of the rescued person due to the shaking during the transportation can be eliminated.

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

  As shown in FIG. 13, when the human-powered stair escape vehicle 100 has either one or both of the handle frame cover 48 and the ring belt 49, the rescuer 83 can grip the handle frame cover 48, By fixing the wrist to the belt 49, it is possible to get on the human-powered stair escape vehicle 100 more safely and more safely.

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

  1 to 13, a description has been given of a form 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, sometimes referred to as a folding human-powered stair evacuation vehicle). In this embodiment, as shown in FIGS. 14 to 16, the rear leg frame 3 may be flipped up and stored (hereinafter sometimes referred to as a flip-up type human-powered stair evacuation vehicle). Next, the flip-up type human-powered stair evacuation vehicle 200 will be described with reference to FIGS. The flip-up human-powered stair escape vehicle 200 has the same basic configuration as the folding human-powered stair escape vehicle 100 except that the rear leg frame 3 is flipped up. Here, different configurations will be mainly described, and description of common configurations may be omitted.

  In the human-powered stair 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 a state where the rear leg frame 2 is spread for flat ground travel, and the lock of the lock mechanism 50 are unlocked. In this state, it is preferable to have a rear leg frame 3 flip-up mechanism 51 that jumps up 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 that fixes 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 a telescopic support rod 90 having an outer pipe 91 and an inner pipe 92 inserted into the outer pipe 91, for example. The support bar 90 is a part corresponding to the support bar 17 (for example, illustrated in FIG. 1) of the folding human-powered stair escape vehicle 100. One end of the support rod 90 of the flip-up human-powered stair escape vehicle 200 and the support rod 17 of the folding human-powered stair escape vehicle 100 are rotatably engaged with the column 9 that bridges the left and right of the rear leg frame 3. Although common in point, the other end of the support rod 17 of the folding-type human-powered stair escape vehicle 100 is rotatably engaged with the axle 13 of the three-wheel caster 15, whereas the flip-up human-powered stair escape vehicle The support rod 90 is different in that the other end is rotatably engaged with a 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 92 a provided in the side surface, a push button 93 disposed 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 protrude and retract from the through hole 92 a by the force of the spring 94. On the other hand, the outer pipe 91 has an engagement hole 91 a that engages with the push button 93 of the inner pipe 92. As shown in FIG. 17, when the push button 93 is engaged with the engagement hole 91a, the inner pipe 92 is fixed to the outer pipe 91. As a result, the rear leg frame 3 is fixed at a predetermined position. The predetermined position is a position where the rear leg frame 3 is widened for traveling on a flat ground with respect to the front leg frame 2. Further, when the push button 93 is pushed in, the lock is released, and the inner pipe 92 slides with respect to the outer pipe 91 so that the support rod 90 can be expanded and contracted. As a result, the rear leg frame 3 can be rotated. FIG. 17 shows an example in which the spring 94 is a bar spring, but the present invention is not limited to this. For example, a plate spring, a torsion coil spring, or a compression coil spring may be used. Further, the present invention is not limited to the lock mechanism 50 shown in FIG. 17, and a 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 to the rear frame 4 side with the upper end portion of the rear leg frame 3 as a rotation axis. An example of the flip-up mechanism 51 will be described with reference to FIG. In the human-powered stair evacuation vehicle 200 according to the present embodiment, the flip-up mechanism 51 has a rotary damper that is attached to the upper end side of the rear leg frame 3 and serves as a rotation center, and the rotary damper has a maximum X degree ( However, 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. And continuously applying a rotational force in a closing direction so that the opening / closing angle of the rotary damper is 0 degree, and Y degree (Y satisfies 0 degree <Y degree <X degree) to X degree or less. The rotational force at the open / close angle is greater than the rotational force at the open / close angle from 0 degree to less than Y degrees, and the rear leg frame 3 is locked by the lock mechanism 50. When the rotary damper has an opening angle of not less than Y degrees and not more than X degrees, and the rear leg frame 3 is not locked by the lock mechanism 50, the opening angle of the rotary damper is not less than 0 degrees and less than Y degrees. The rear leg frame 3 is preferably flipped up so that The rear leg frame 3 can be lifted up more smoothly by the elastic force of the spring, and the rear leg frame 3 jumped up by the braking force of the rotary damper can be prevented from colliding with the back surface of the rescuer.

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

  When the flip-up mechanism 51 has a spring-equipped rotary damper, the spring-equipped rotary damper gives a rotational force by which 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 portion of the rear leg frame 3 so as to brake the rotational force of the spring. At this time, the rotation axis of the rotary damper with the 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 a direction in which the rear leg frame 3 is flipped up.

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

  The rotary damper is a component that brakes the rotational force of the spring. The rotary damper has an opening / closing angle of 0 degree or more and X degree or less. The rear 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, a region where the opening / closing angle is 0 degree or more and less than Y degree is a region where the braking force is relatively high, and a region where the opening / closing angle is Y degree or more and X degrees or less is a region where the braking force is relatively low. . Thereby, the rotational force by the spring is braked more greatly in the region where the opening / closing angle is 0 degree or more and less than Y degree with respect to the region where the opening / closing angle is not less than Y degree and less than X degree. For this reason, the rotational force at the opening / closing angle of not less than Y degrees and not more than X degrees is larger than the rotating force at the opening / closing angle of not less than 0 degrees and less than Y degrees. As a result, immediately after the lock by the locking mechanism 50 of the rear leg frame 3 is released, the rear leg frame 3 is smoothly flipped up (region where the opening / closing angle is not less than Y degrees and not more than X degrees). Then, when the rear leg frame 3 is flipped up to a certain height, the speed at which the rear leg frame 3 is lifted down becomes slow, and the rear leg frame 3 can be prevented from colliding with the back of the rescued person. (A region where the opening / closing angle is 0 degree or more and less than Y degree). FIG. 18 shows an example in which X is 180 degrees and Y is 90 degrees, 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 degrees is above the conveying belt 34. By smoothly raising the rear leg frame 3 to the upper side of the conveyor belt 34, the rear leg frame 3 can be smoothly raised to a position where it does not interfere with the rescuer who operates the human-powered stair escape vehicle 200. . For example, in FIG. 18, the direction in which the opening / closing angle of the rotary damper is 0 degree is the vertical upward direction, but the direction in which the opening / closing angle of the rotary damper is 0 degree is 40 degrees in the direction of the rear frame 4 with respect to the vertical direction. The direction in which the opening / closing angle becomes Y degrees may be set above the conveying belt 34 by shifting the angle by a certain amount.

  In the flip-up type human-powered stair escape vehicle 200, the upper end of the rear leg frame 3 is attached to the L-shaped support member 35 as shown in FIG. 14, or left and right of the seat frame 6 as shown in FIG. It may be attached to the support rod 8 that bridges. 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 stair escape vehicle 100 according to this embodiment will be described. In the movement on the flat ground, as shown in FIG. 1, the rear leg frame 3 is expanded and the wheels 20 of the rear wheel casters 21 are grounded. The rescuer (or caregiver) travels the human-powered stair evacuation vehicle 100 with the rescuer grip 5.

  Next, an operation example when going up the stairs will be described. In traveling on flat ground, the human-powered stair evacuation vehicle 100 is made to approach the stairs as a rescuer pulls it. That is, the rear wheel caster 21 is in a state of facing the stairs. When approaching the stairs, the rescuer folds the rear leg frame 3 and stores the rear wheel caster 21 above the ground contact surface 34a of the conveyor belt 34 as shown in FIG. Next, the tail pulley 31 side of the conveyor belt 34 is brought close to the stairs, and the ground contact surface 34a of the conveyor belt 34 is placed on the edge of the stairs 82. The rescuer pulls up the human-powered stair evacuation vehicle 100 in the upward direction 44 of the stairs while wrapping the traction assist belt 43 around the waist or staking it from the shoulder. At this time, since the belt 32 of the conveying belt 34 contacts the edge 82 of the staircase, the belt 32 moves while being wound and rotated between the head pulley 30 and the tail pulley 31 in accordance with the upward movement of the staircase. Since the belt 32 of the conveying belt 34 is in contact with only one edge 82, is in contact with two consecutive edges 82, or is simultaneously in contact with three consecutive edges 82, each time. This contributes to improving the stability of the human-powered stair escape vehicle 100. Further, each wheel 12a, 12b, 12c of the three-wheel caster 15 rises one wheel at a time when climbing one step. That is, one of the wheels of the three-wheel caster 15 is always placed on the step board of the stairs. At this time, since the arch portion 16 climbs the stairs while sliding so as to follow the edge 82 of the stairs, stability is ensured when the three-wheel caster 15 climbs the stairs. Further, among the three wheels 12a, 12b, and 12c of the three-wheel caster 15, the two wheels come into contact with the step up and the tread so that the traveling when rising is stable. Further, since the conveying belt 34 is in contact with at least one of the edge portions 82 of the staircase, traveling when ascending is stabilized regardless of the movement of the three-wheel caster 15. Here, the head pulley 30 side of the conveyor belt 34 may be separated from the edge 82 of the staircase due to the movement of the three-wheel caster 15, so that the resistance when rising is reduced. Furthermore, it is preferable that the ratchet mechanism (60, 61) or the brake mechanism (70, 71) for descent prevention or descent braking is turned on. When going up the stairs, reverse running is prevented and safety can be improved. After climbing up the stairs, switch to flat ground running. That is, as shown in FIG. 1, the rear leg frame 3 is expanded and the wheels 20 of the rear wheel casters 21 are grounded.

  Next, an operation example when going down the stairs will be described. In traveling on flat ground, the rescuer presses the human-powered stair evacuation vehicle 100 to approach the stairs. That is, the three-wheel caster 15 is in a state facing the stairs. When approaching the stairs, the rescuer folds the rear leg frame 3 and stores the rear wheel caster 21 above the ground contact surface 34a of the conveyor belt 34 as shown in FIG. Next, each wheel 12a, 12b, 12c of the three-wheel caster 15 is lowered one wheel each time the stairs are lowered by one step. That is, one of the wheels of the three-wheel caster 15 is always placed on the step board of the stairs. At this time, since the arch part 16 comes into contact with the edge 82 of the stairs and slides down the stairs, stability is ensured when the three-wheel caster 15 goes down the stairs. In addition, since the two wheels of the three wheels 12a, 12b, and 12c of the three-wheel caster 15 come into contact with the step up and the tread, the traveling at the time of lowering is stabilized. When the head pulley 30 is fixed at a position inside the locus drawn by the arch portion 16 when the arch portion 16 contacts and slides with the edge 82 of the staircase, the head pulley 30 does not hit the edge 82 of the staircase, The edge 82 can be crossed, and then the ground contact surface 34a of the conveyor belt 34 rides on the edge 82 of the staircase. The rescuer pulls the human-powered stair evacuation vehicle 100 down the stairs while pulling the human-powered stair evacuation vehicle 100 in the upward direction 44 of the stairs while winding the tow assist belt 43 around the waist or hanging it from the shoulder as necessary. Go down to. At this time, since the belt 32 of the conveying belt 34 contacts the edge 82 of the staircase, the belt 32 moves while being wound and rotated between the head pulley 30 and the tail pulley 31 in accordance with the movement down the staircase. Since the belt 32 of the conveying belt 34 is in contact with the one-stage edge 82, is in contact with the two-stage edge 82 in succession, or is in contact with the three-stage edge 82 in succession, braking is applied, and human power This contributes to improving the stability of the type stair evacuation vehicle 100. Furthermore, it is preferable that the brake mechanism (70, 71) is turned on. Braking works when going down the stairs, which can improve safety. When you go down the stairs, switch to flat ground running. That is, as shown in FIG. 1, the rear leg frame 3 is expanded and the wheels 20 of the rear wheel casters 21 are grounded.

  Up to this point, the method of using the folding human-powered stair escape vehicle 100 has been described. The method of using the flip-up human-powered stair escape vehicle 200 is the same as the method of using the folding human-powered stair escape vehicle 100 except that the retracting method of the rear leg frame 3 is different when the stairs are raised and lowered.

  In the flip-up type human-powered stair evacuation vehicle 200, as shown in FIG. 14, the rear leg frame 3 is fixed to the front leg frame 2 in a state where the rear leg frame 3 is widened for the flat ground traveling by the lock mechanism 50 in the flat ground traveling. Yes. When approaching the stairs, the rescuer presses the push button 93 (shown in FIG. 17) of the locking mechanism 50 to unlock the rear leg frame 3, and the rear leg frame 3 is moved to the rear frame 4 as shown in FIG. Jump up to the back side. At this time, since the rotational force is continuously applied to the rear leg frame 3 in the closing direction so that the opening / closing angle of the rotary damper becomes 0 degrees by the flip-up mechanism 51, the rear leg frame 3 is kept in the state of being flipped up without being fixed. However, a fixing mechanism (not shown) for fixing the rear leg frame 3 in a state of being flipped up may be provided. When the stairs are lifted, the rear leg frame 3 is lowered and the wheels 20 of the rear wheel casters 21 are grounded. Then, as shown in FIG. 17, the push button 93 of the lock mechanism 50 is automatically engaged with the engagement hole 91a, and the rear leg frame 3 travels on the flat ground with respect to the front leg frame 2 as shown in FIG. It is fixed in a state where it is spread for use. When not in use, as shown in FIG. 16, it can be folded compactly. The folding method is the same as that of the folding human-powered stair escape vehicle 100. At this time, since the rotational force is continuously applied to the rear leg frame 3 in the closing direction so that the opening / closing angle of the rotary damper becomes 0 degrees by the flip-up mechanism 51, the rear leg frame 3 is kept in the state of being flipped up without being fixed. However, a fixing mechanism (not shown) for fixing the rear leg frame 3 in a state of being flipped up may be provided.

  In the folding human-powered stair escape vehicle 100, when the rear leg frame 3 is folded, it is necessary to temporarily tilt the escape car 100 forward in the process of moving the rear leg frame 3 forward. At this time, the rescuer seat 1 on which the rescuer is seated also tilts forward, so that there is a fear that the rescuer may feel uneasy about being thrown forward. On the other hand, in the flip-up type human-powered stair escape vehicle 200, by jumping up the rear leg frame 3, a transition is made from a flat ground travel to a stair travel without changing the height or angle of the rescue target seat 1. be able to. For this reason, it is possible to shift to staircase travel without causing the sitting rescuer to feel uneasy.

100,200 Human-powered stair evacuation vehicle 1 Rescue seat 2 Front leg frame 3 Rear leg frame 4 Back frame 5 Rescue grip 6 Seat frame 8 Support rod 9 Support column 10 Support wheels 11a, 11b, 11c Top 12a , 12b, 12c Wheel 13 Axle 15 Three-wheel caster 16 Arch 17 Support rod 18 Pillow cloth 19 Strut 20 Wheel 21 Rear wheel caster 30 Head pulley 31 Tail pulley 32 Belt 33 Rod-shaped support member 34 Conveying belt 34a Grounding surface 35 L-shaped support Members 40a, 40b, 40c, 40d Attachment mechanisms 41a, 41b Hooks 42a, 42b String 43 Auxiliary pulling belt 44 Inclined upward direction of stairs 45 Foldable handle 46a, 46b Stopper 47 Support pipe 48 Handle frame cover 49 Ring belt 50 Lock Mechanism 51 Bounce mechanism 60 Ratchet Gear 61 ratchet 70 gear 71 claw 80 stair tread 81 stair rise 82 stair edge 83 rescued person 84 rescuer 90 support rod 91 outer pipe 91a engagement hole 92 inner pipe 92a through hole 93 push button 94 Spring

Claims (12)

It is a human-powered stair evacuation vehicle that can move up and down the stairs with the rescuer sitting,
A rescue seat, and
The front leg frame,
The rear leg frame,
A back frame on the back side of the seat,
A rescuer grip disposed 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;
A rear wheel caster having at least one wheel;
A rod-shaped support member, a head pulley attached to one end of the rod-like support member, a tail pulley attached to the other end of the rod-like support member, and a conveyor belt having a belt wound around the head pulley and the tail pulley And having
The three-wheel caster is attached to the front leg frame,
The rear wheel caster is attached to the rear leg frame;
The human-powered stair evacuation vehicle, wherein the conveyor belt is attached below the seat.   The human-powered stair evacuation vehicle according to claim 1, wherein the front leg frame has a traction assist belt attachment mechanism.   3. The human-powered stair evacuation vehicle according to claim 1, wherein each wheel of the three-wheel caster includes a ratchet mechanism for descent prevention or descent braking.   The human-powered stair escape vehicle according to any one of claims 1 to 3, wherein each wheel of the three-wheel caster includes 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,
5. The head pulley according to claim 1, wherein the head pulley is fixed at a position inside the locus drawn by the arch when the support wheel rotates about the axle. The human-powered stair escape vehicle described.   The human-powered stair 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 caster approaches the three-wheel caster. A lock mechanism for fixing the rear leg frame to the front leg frame in a state where the rear leg frame is spread for running on a flat ground;
A rear leg frame flip-up mechanism that, when the lock mechanism is unlocked, has the lower end side of the rear leg frame jumped up to the back frame side with the upper end side of the rear leg frame as a rotation center; The human-powered stair evacuation vehicle according to any one of claims 1 to 5, further comprising: The flip-up mechanism has a rotary damper as a rotation center 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 degree. Continues to apply a rotational force in the closing direction, and the rotational force is 0 degree or more and less than Y degree when the opening / closing angle is Y degrees (where Y satisfies 0 degree <Y degree <X degrees) to X degrees or less. Larger than the rotational force at the opening and closing angle up to
When the rear leg frame is locked by the locking mechanism, the rotary damper has an opening / closing angle of not less than Y degrees and not more than X degrees, and
8. 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. The human-powered stair evacuation vehicle described in 1.   When the rear leg frame is folded and the rear wheel casters are accommodated so that the stairs can be raised or lowered, or when the rear leg frame is flipped up and the stairs can be raised or lowered, the method of the contact surface of the belt 9. The human-powered stair evacuation vehicle according to claim 1, wherein a bottom end of a wheel of the three-wheel caster is below the ground contact surface of the belt in a linear direction.   The human-powered stair escape vehicle according to any one of claims 1 to 9, wherein the front leg frame has a foldable handle. A seat frame that is movably fixed to the front leg frame so as to intersect the front leg frame or to fit the front leg frame;
The seat frame is
With respect to the front leg frame, an opening limit is provided so as not to open at a predetermined angle or more,
At least a portion of the rescuer seat is fixed, and
The human-powered stair evacuation vehicle according to any one of 1 to 10, further comprising a handle frame cover configured to be gripped by the rescuer sitting on the rescuer seat. A seat frame that is movably fixed to the front leg frame so as to intersect the front leg frame or to fit the front leg frame;
The seat frame is
With respect to the front leg frame, an opening limit is provided so as not to open at a predetermined angle or more,
At least a portion of the rescuer seat is fixed, and
The human power according to any one of claims 1 to 11, further comprising a ring-shaped belt configured to support the wrist by passing the wrist of the rescuer sitting on the seat for the rescuer. Type stair evacuation car.