JP7206917B2 - portable ramp - Google Patents

Description

The present invention relates to a portable ramp and a landing device included therein.

Portable ramps are often used to get wheelchairs over steps. If only a single flat ramp is used, the ramp must span from below the front of the step to the top of the step. However, it is not always the case that there is enough space to install the ramp under the front of the step. In order to cope with such a situation, for example, Patent Literature 1 discloses a landing device capable of connecting two slopes. The landing system has two bases superimposed on each other, each with a ramp attached. The two bases can rotate relative to each other, and by adjusting the rotation angle between the two bases, the passage formed by the two slopes and the landing device can be bent. This allows the ramp to be installed even if there is not enough space below the front of the step.

JP 2016-44430 A

By the way, when using the landing device as described above, it is necessary to change the course of the wheelchair on the landing toward the side of the slope on which the wheelchair is going. In order to change the direction of the course of the wheelchair, it is necessary to turn while moving the wheelchair. In that case, the landing device itself becomes large, and such a landing device may be difficult to install in a narrow space, and is not suitable for portability.

An object of the present invention is to provide a small landing device and a portable slope provided with the same.

A portable slope according to a first aspect includes a landing device including a top plate having a top surface, legs supporting the top plate from below, a first slope, and a second slope. The top plate has an upper surface that forms part of the top surface, and has a main body portion that has a first side and a second side that forms an angle with respect to the first side in a plan view; a turntable having an upper surface forming a part thereof, arranged so as to be surrounded by the main body in a plan view, and rotatable with respect to the main body in a plane parallel to the top surface. The first slope spans between the first side and the first position. The second slope spans between the second side and a second position higher than the first position.

A portable slope according to a second aspect is the portable slope according to the first aspect, wherein one end of the first slope is detachably connected to a portion near the first side of the main body. One end of the second slope is detachably connected to a portion near the second side of the main body.

A portable slope according to a third aspect is the portable slope according to the first aspect or the second aspect, wherein the upper surface of the main body and the upper surface of the turntable are substantially flush. .

A portable slope according to a fourth aspect is the portable slope according to any one of the first aspect to the third aspect, wherein at least one of the turntable and the main body has a slope along the outer peripheral edge of the turntable. A protruding portion protruding upward is formed at each end.

A portable slope according to a fifth aspect is the portable slope according to any one of the first aspect to the fourth aspect, wherein the first side and the second side are substantially orthogonal.

A portable slope according to a sixth aspect is the portable slope according to any one of the first aspect to the fifth aspect, wherein the landing device includes a locked state that prevents rotation of the turntable with respect to the main body, and It further includes a lock mechanism that switches between an unlocked state that allows rotation of the turntable with respect to the main body.

A portable slope according to a seventh aspect is the portable slope according to the sixth aspect, wherein the lock mechanism is connected to an operation section and the operation section, and when an external force is applied to the operation section, the lock mechanism is connected to the operation section. a lever member rotating from a position corresponding to the locked state to a position corresponding to the unlocked state; and a biasing member biasing the lever member to the position corresponding to the locked state.

A portable slope according to an eighth aspect is the portable slope according to the seventh aspect, wherein the lever member has a lock portion. The turntable is formed with a plurality of locked portions that are hooked on the lock portion. The plurality of locked portions are arranged around the rotation axis of the turntable at intervals corresponding to the angle formed by the first side and the second side.

A landing device according to a ninth aspect is a landing device used together with a first slope and a second slope, and includes a top plate having a top surface and legs supporting the top plate from below. The top plate has an upper surface that forms part of the top surface, and has a main body portion that has a first side and a second side that forms an angle with respect to the first side in a plan view; a turntable having an upper surface forming a part thereof, arranged so as to be surrounded by the main body in a plan view, and rotatable with respect to the main body in a plane parallel to the top surface. A portion of the body portion near the first side is configured to be connectable to one end of the first slope. A portion of the body portion near the second side is configured to be connectable to one end of the second slope.

According to the present invention, the first slope and the second slope are spanned in different directions from the top board that serves as the landing included in the landing device. A turntable is placed on the top plate. Therefore, on the landing, the course of the wheelchair can be changed by the turntable. This turning method does not require a large landing area. Therefore, a compact landing device and a portable ramp including the same are provided.

The top view of the portable slope which concerns on one Embodiment of this invention. The front view of the portable slope of FIG. The perspective view which looked the landing apparatus from upper direction. The perspective view which looked the landing apparatus from the downward direction. FIG. 4 is a perspective view of main parts of the locking mechanism; FIG. 4 is a side cross-sectional view of the periphery of the lock mechanism in a locked state; FIG. 4 is a side cross-sectional view of the periphery of the lock mechanism in an unlocked state; Fig. 3 is a side cross-sectional view of the periphery of the connecting portion between the first slope and the top plate;

Hereinafter, a portable slope according to an embodiment of the present invention and a landing device included therein will be described with reference to the drawings.

<1. Overall configuration of portable slope>
FIG. 1 shows a plan view of a portable slope 1 according to this embodiment, and FIG. 2 shows its front view. 1 and 2 show how the portable slope 1 is installed on the front lower side of the step 5. FIG. The steps 5 are, for example, but not limited to, stairs having one or more steps. As shown in these figures, the portable slope 1 forms a passage connecting between a first position P1 at a certain height and a second position P2 higher in the vertical direction. This path is gently sloping and is typically, but not exclusively, used by a wheelchair to climb over the step 5 . The first position P1 is to the side of the position immediately after descending the step 5, and the second position P2 is the position immediately after climbing the step 5. - 特許庁

The transportable ramp 1 comprises a first ramp 10, a second ramp 20 and a landing device 30 for use with these ramps 10 and 20. The landing device 30 includes a top plate 31, and a top surface 31a of the top plate 31 serves as a landing (hereinafter, the landing may also be denoted by reference numeral 31a). The first slope 10 spans between the first side L1 of the landing 31a and the first position P1, and the second slope 20 spans between the second side L2 of the landing 31a and the second position P2. bridged. The landing 31a is a horizontal surface that connects the slope formed by the first slope 10 and the slope formed by the second slope 20, and serves to change the course of the passage formed by the portable slope 1. space. In this embodiment, the passage formed by the portable slope 1 is L-shaped and bends at a right angle on the landing. Hereinafter, the configuration of each part included in the portable slope 1 will be described in order.

<2. Configuration of each part>
<2-1. Landing device>
3 is a perspective view of the landing device 30 as seen from above, and FIG. 4 is a perspective view of this as seen from below. As shown in these figures, the landing device 30 includes a top plate 31 and a plurality of legs 40 that support the top plate from below. Although not limited to this, the top plate 31 of the present embodiment has a generally square plate shape in plan view, and the legs 40 are arranged near the four corners of the bottom surface 31 b of the top plate 31 . Each leg 40 has the same structure, and has a linear shaft portion 41 fixed to the bottom surface 31 b and a wheel 42 attached to the lower end portion of the shaft portion 41 . Wheels 42 enhance the portability of landing system 30 . Legs 40 are preferably fitted with a locking mechanism for locking rotation of wheels 42 to stabilize the position of landing device 30 during use. Since various structures of such a lock mechanism are known, detailed description thereof is omitted here.

The top plate 31 has a plate-like body portion 32 in which a circular recess is formed in a plan view, and a disc-shaped turntable 33 arranged in the recess. In FIG. 2, for reference, the position of the turntable 33, which is originally invisible from the front of the landing device 30, is indicated by a dotted line. In this manner, the turntable 33 is embedded in the upper surface 32a of the body portion 32, and is arranged so as to be surrounded by the body portion 32 in plan view, as shown in FIG. The upper surface 33a of the turntable 33 forms part of the top surface 31a that serves as a landing. A portion of the upper surface 32a of the main body 32 that is not covered with the turntable 33 also constitutes a part of the top surface 31a. In this embodiment, the top surface 33a of the turntable 33 is substantially flush with the top surface 32a of the body portion 32 surrounding it. A lower surface 33 b of the turntable 33 is covered with the body portion 32 . A bottom surface 31 b of the top plate 31 is configured by a bottom surface 32 b of the body portion 32 .

The turntable 33 is rotatable in a horizontal plane with respect to the main body 32 . The turntable 33 is used to change the course of the wheelchair on the landing 31a. The turntable 33 rotates around a rotation axis 34 arranged along its central axis. For reference, in FIG. 2, like the turntable 33, the position of the rotating shaft 34, which is originally not visible from the front of the landing device 30, is indicated by a dotted line. The rotating shaft 34 extends vertically and is fixed so as to be embedded in the body portion 32 . The turntable 33 and the main body portion 32 are arranged substantially coaxially, and the rotating shaft 34 is arranged near the center of the main body portion 32 in plan view.

The body portion 32 is generally square in plan view, and has a first side L1, a second side L2, a third side L3, and a fourth side L4. The first side L1 and the second side L2 are substantially orthogonal. Similarly, the second side L2 and the third side L3, the third side L3 and the fourth side L4, and the fourth side L4 and the first side L1 are also substantially orthogonal to each other.

One end of the first slope 10 is detachably connected to a portion of the body portion 32 near the first side L1. One end of the second slope 20 is detachably connected to a portion of the body portion 32 near the second side L2. More specifically, a slot 35 extending along the first side L1 is formed in a portion of the upper surface 32a of the body portion 32 near the first side L1. By inserting a later-described hook portion 16 of the first slope 10 into the slot 35, the top plate 31 and the first slope 10 are connected. Similarly, a slot 36 extending along the second side L2 is formed on the upper surface 32a of the main body 32 near the second side L2. The top plate 31 and the second slope 20 are connected by inserting the top plate 16 . In this way, the slot 35 and the hooking portion 16 of the first slope 10 constitute a connection mechanism between the top plate 31 and the first slope 10, and the slot 36 and the hooking portion 16 of the second slope 20 are connected to the top plate 31. A connection mechanism with the second slope 20 is configured.

Note that, as shown in FIG. 3, the slots 35 and 36 are arranged on the bottom surface of a recess slightly recessed from the top surface 31a of the main body portion 32, respectively. The depressions are arranged along the first side L1 and the second side L2 and reach the first side L1 and the second side L2, respectively. Thereby, when the top plate 31 and the first slope 10 are connected, the depth of the depression absorbs the thickness of the first slope 10, and the slope formed by the landing 31a and the upper surface of the first slope 10 are generally flush with each other. Similarly, when the top plate 31 and the second slope 20 are connected to each other, the thickness of the second slope 20 is absorbed, and the landing 31a and the slope formed by the upper surface of the second slope 20 are generally flat. become one. Therefore, the wheelchair can smoothly move from the first slope 10 to the landing 31a and further from the landing 31a to the second slope 20. - 特許庁Of course, it is possible to smoothly move from the second slope 20 to the landing 31a and from the landing 31a to the first slope 10 as well.

A fence 37 extending along the third side L3 is arranged on the upper surface 32a of the body portion 32 near the third side L3. Similarly, a fence 38 extending along the fourth side L4 is arranged on the upper surface 32a of the main body 32 near the fourth side L4. Both of these fences 37 and 38 protrude upward from the upper surface 32a, and function as a fall prevention mechanism for preventing a wheelchair placed on the top surface 31a, which is a landing, from falling from the top surface 31a.

The upper surface 33 a of the turntable 33 is formed with a protruding portion 39 protruding upward along the outer peripheral edge of the turntable 33 near the outer peripheral edge. The height of the projecting portion 39 is such that a wheelchair can easily climb over it. The protruding part 39 can inform at least one of a person on the wheelchair and a person pushing the wheelchair that the wheelchair has run on the turntable 33 by vibration transmitted to the wheelchair when the wheelchair climbs over. Considering such a function, the height of the projecting portion 39 is preferably several millimeters to several centimeters. In addition, although the protrusion part 39 of this embodiment extends continuously without a break along the perimeter direction, it may extend intermittently.

The turntable 33 can easily change the orientation of the wheelchair on the landing 31a. For example, as in the example of FIGS. 1 and 2, consider a scene in which the vehicle travels from the first slope 10 forming an uphill slope to the second slope 20 forming the same uphill slope via a landing 31a. At this time, the wheelchair that has advanced along the first slope 10 first rides on the landing 31a with the first side L1 as its back. After that, when the turntable 33 is rotated from the second side L2 toward the first side L1 by the angle formed by the first side L1 and the second side L2 (90° in this embodiment), the wheelchair is rotated. faces the second side L2. Such an operation allows the wheelchair to be easily guided to the second slope 20 . In this direction changing method, the wheelchair can easily change direction on the landing 31a simply by arranging the turntable 33 large enough to place the entire wheelchair on the landing 31a. Therefore, there is no need to excessively increase the area of the landing 31a, and the size of the landing device 30 can be reduced.

Wheelchairs normally move toward the path when going uphill and with their backs to the path when going downhill. Therefore, depending on whether the first slope 10 and the second slope 20 are uphill slopes or downhill slopes, and which one of the first slope 10 and the second slope 20 to proceed from, etc., the landing 31a The direction of rotation is different. In this respect, the turntable 33 of this embodiment can rotate 360 degrees and can rotate in two directions. Therefore, the direction and amount of rotation can be freely adjusted on the landing 31a, and as a result, the wheelchair can be oriented in a desired direction with the minimum amount of rotation.

As shown in FIG. 4 , a lock mechanism 50 for the turntable 33 is attached to the lower surface 32 b of the body portion 32 of the top plate 31 . FIG. 5 is a perspective view of main components of the lock mechanism 50. FIG. The lock mechanism 50 can switch between a locked state in which rotation of the turntable 33 with respect to the main body 32 is stopped and an unlocked state in which the rotation is permitted. 6A is a side cross-sectional view around the lock mechanism 50 in the locked state, and FIG. 6B is a side cross-sectional view around the lock mechanism 50 in the unlocked state. The locking mechanism 50 helps to properly adjust the direction of rotation of the wheelchair on the landing 31a.

The lock mechanism 50 has a lever member 51 . The lever member 51 is a rod-shaped member and is fixed to the lower surface 32b of the main body portion 32 of the top plate 31 so as to be vertically rotatable. In this embodiment, as shown in FIG. 4, the lever member 51 extends from a predetermined position on the lower surface 32b toward one corner of the top plate 31 in a radial direction with respect to the rotation shaft 34 of the turntable 33. extended. A hole 511 passing through the lever member 51 in the horizontal direction is formed in the inner end portion 51 a of the lever member 51 , and a rotating shaft 512 extending in the horizontal direction is inserted into the hole 511 . The rotation shaft 512 is stably fixed to the lower surface 32b of the main body 32 by a pair of suspension members 513 with a gap from the lower surface 32b.

On the other hand, the operating portion 52 is connected to the outer end portion 51b of the lever member 51 . The operating portion 52 is V-shaped in plan view. The lever member 51 extends to the vicinity of the wheel 42 attached to one corner of the lower surface 32b of the body portion 32, and avoids the wheel 42 from there, so that the pedals 521 and 522 of the operation portion 52 are bifurcated. there is

Another operating portion 53 is connected to a predetermined position near the outer end portion 51 b of the lever member 51 . The operating portion 53 has a rod member 531 extending upward from the lever member 51, as shown in FIGS. 6A and 6B. The rod member 321 is inserted into the through hole 321 formed in the main body portion 32 and passes through it, and the upper portion of the rod member 321 protrudes upward from the upper surface 32 a of the main body portion 32 . An umbrella-shaped pedal 532 is fixed to the top of the rod member 531 . The area of the lower surface of the pedal 532 is larger than the cross-sectional area of the through hole 321 to prevent the rod member 531 from dropping out of the through hole 321 . A biasing member 55 is arranged between the upper surface 32 a of the body portion 32 and the lower surface of the pedal 532 . The urging member 55 is a spring in this embodiment, and urges the pedal 532 to lift the pedal 532 in a natural length state where no external force is applied. Note that at least one of the operating portions 52 and 53 and the lever member 51 may be configured integrally.

A locking portion 54 is fixed at a predetermined position between the inner end portion 51 a and the outer end portion 51 b of the lever member 51 . As shown in FIGS. 6A and 6B, the lock portion 54 is a rod-shaped member that extends upward from the lever member 51 and is inserted into through holes 322 and 331 formed in the main body portion 32 and the turntable 33, respectively. . The upper portion of the lock portion 54 is hemispherical. The through hole 331 formed in the turntable 33 (or a portion defining the through hole 331) is hooked on the upper portion of the lock portion 54 (or when the upper portion of the lock portion 54 is hooked), the turntable 33 is Creates a non-rotatable locked state. As shown in FIG. 3, the turntable 33 is formed with a plurality of through holes 331 along the circumferential direction with respect to the rotating shaft 34 thereof. These through holes 331 are arranged at intervals of the angle (90° in this embodiment) formed by the first side L1 and the second side L2 of the top plate 31 . Therefore, every time the turntable 33 rotates by the angle formed by the first side L1 and the second side L2, the lock portion 54 is caught in the through hole 331 and a locked state is formed.

The lock mechanism 50 described above functions as follows. The locked state shown in FIG. 6A is a state in which the upper portion of the lock portion 54 is inserted into one of the through holes 331 of the turntable 33 . At this time, the surface of the turntable 33 that defines the through hole 331 hits the upper portion of the lock portion 54, so that the rotation is prevented. The biasing member 55 biases the lever member 51 including the locking portion 54 to the position corresponding to this locked state unless an external force is applied. Therefore, the turntable 33 does not rotate unexpectedly due to the momentum when the wheelchair rides on the turntable 33. - 特許庁

When it is desired to rotate the turntable 33, a downward external force is applied to one of the pedals 521, 522 and 532 by, for example, stepping on the pedal. Due to the external force at this time, the biasing member 55 contracts, and the force of the biasing member 55 pushing up the umbrella-shaped pedal 532 and the entire lever member 51 connected thereto is cancelled. 6A to a position corresponding to the unlocked state shown in FIG. 6B. The upper part falls out of the through hole 331 . The unlocked state is a state in which the upper portion of the lock portion 54 is not inserted into any of the through holes 331 of the turntable 33 . In this state, there are no obstacles preventing the rotation of the turntable 33 and the turntable 33 can rotate around the rotation shaft 34 .

When changing the direction of the wheelchair on the landing 31a, force is applied to the wheelchair in the desired direction of rotation while applying an external force to any of the pedals 521, 522 and 532 as described above. As a result, the turntable 33 is dragged by the wheelchair due to the frictional force between the wheelchair and the upper surface 33a of the turntable 33, and rotates together with the wheelchair in the desired rotational direction. When the turntable 33 begins to rotate, the pedals 521, 522 and 532 are stopped to release the external force. As a result, the biasing member 55 attempts to return to its natural length and applies an upward force to the umbrella-shaped pedal 532 and the entire lever member 51 connected thereto. However, this force is suppressed by the lower surface 33b of the turntable 33 that collides with the upper portion of the lock portion 54 until the next through hole 331 turns right above the lock portion 54, and the lock state is restored. can't On the other hand, when the next through-hole 331 turns right above the lock portion 54, the restoring force of the biasing member 55 rotates the lever member 51 upward around the rotation shaft 512, and the lock portion 54 is lifted. and inserted into the through hole 331 . In this way, the locked state is restored again.

Each portion of the landing system 30 can be constructed from a variety of materials. However, the main body 32, which occupies most of the landing device 30, is preferably made of a lightweight and high-strength material from the viewpoint of portability. For example, fiber-reinforced plastics can be selected as such a material for the main body portion 32, and carbon fiber-reinforced plastics is preferably selected from the viewpoint of lightness. However, from the viewpoint of cost, a mixture of carbon fiber reinforced plastic and glass fiber reinforced plastic may be selected. On the other hand, as the material forming the turntable 33, for example, stainless steel or other metals can be selected from the viewpoint of strength. Alternatively, fiber-reinforced plastic can be selected as the material for the turntable 33 from the viewpoint of lightness and strength. In particular, carbon-fiber-reinforced plastic or a mixture of carbon-fiber-reinforced plastic and glass-fiber-reinforced plastic can be selected. can be preferably selected. Also, the turntable 33 may be made of both carbon fiber reinforced plastic and metal. From the viewpoint of lightness and strength, metals such as stainless steel and aluminum can be selected as the material for the lock mechanism 50 .

<2-2. First slope and second slope>
Next, the first slope 10 and the second slope 20 are described. In this embodiment, these slopes 10 and 20 have the same construction as each other. Therefore, only the first slope 10 will be described below. However, the slope lengths of the first slope 10 and the second slope 20 may be different.

As shown in FIG. 1, the first slope 10 has a flat plate portion 11 that is rectangular in plan view, and a pair of side walls 12 and 13 that extend along both ends of the flat plate portion 11 in the width direction. The flat plate portion 11 has a width through which a wheelchair can pass. Anti-skids 14 and 15 extending in the width direction are fixed to both ends of the flat plate portion 11 in the length direction.

The flat plate portion 11 of this embodiment is foldable. More specifically, the flat plate portion 11 has a pair of flat plate portions 111 and 112 arranged adjacent to each other in the width direction. The flat plate portions 111 and 112 have generally symmetrical shapes with respect to their facing surfaces. A hinge mechanism (not shown) or the like is attached to the flat plate portions 111 and 112, and the flat plate portions 111 and 112 can be folded so that their upper surfaces face each other. Thereby, when the portable slope 1 is not used, the portability and storability of the first slope 10 can be improved.

FIG. 7 is a side cross-sectional view of the periphery of the connecting portion between the first slope 10 and the top plate 31. As shown in FIG. As shown in the figure, a hook portion 16 extending along the width direction is attached near one end in the length direction of the flat plate portion 11 . In this embodiment, the hook 16 protrudes downward from the bottom surface of the anti-slip 14 . The hook 16 has substantially the same cross-sectional shape as each of the slots 35 and 36 formed in the main body 32 of the landing device 30, and can be inserted into either slot. The first slope 10 is connected to the top plate 31 of the landing device 30 by inserting the hook 16 into the slot 35 or 36 . The hook 16 can also be attached so as to protrude downward from the lower surface of the end of the flat plate portion 11 .

From the viewpoint of portability, the flat plate portion 11 and the side wall portions 12 and 13 are preferably made of a lightweight and high-strength material. Fiber reinforced plastics, for example, can be selected as such materials constituting these parts 11 to 13, and carbon fiber reinforced plastics are preferably selected from the viewpoint of light weight. However, from the viewpoint of cost, a mixture of carbon fiber reinforced plastic and glass fiber reinforced plastic may be selected. Further, the inside of the flat plate portion 11 may be formed of a foam layer such as urethane foam, or a panel having a honeycomb structure made of resin, aluminum, paper, or the like. On the other hand, rubber, for example, can be selected as a preferable material for the anti-skid pads 14 and 15 . Metal such as stainless steel can be selected as a preferable material for the hook 16 . It should be noted that the anti-slips 14 and 15 are preferably made of a flexible material such as the rubber described above. In this case, since the anti-slips 14 and 15 can be deformed relatively easily, the angles of the slopes 10 and 20 with respect to the top plate 31 can be adjusted. As a result, the portable slope 1 can be stably bridged over the steps 5 of various heights.

<3. Variation>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the scope of the invention. For example, the following changes are possible. Also, the gist of the following modified examples can be combined as appropriate.

<3-1>
In the above-described embodiment, the top surface 31a of the landing device 30 is generally square, but the shape of the top surface 31a is not limited to this, and may be triangular, polygonal with pentagons or more, fan-shaped, or the like. Also, as is clear from such an example, the angle formed by the first side L1 and the second side L2 to which the slopes 10 and 20 are attached may be smaller than 90° or larger than 90°. . Also, the first side L1 and the second side L2 to which the slopes 10 and 20 are attached may not be adjacent sides on the top surface 31a.

<3-2>
In the above embodiment, the two slopes 10 and 20 are connected to the top plate 31, but three or more slopes may be connectable.

<3-3>
In the above embodiment, the slopes 10 and 20 are detachable from the landing device 30, but some or all of the slopes may be configured so as not to be detachable. In this case, for example, the slope may be of a foldable type that can be folded with respect to the top surface 31a.

<3-4>
The configuration for connecting the landing device 30 and the slopes 10 and 20 is not limited to that described above. For example, a slot may be formed on the slope side, and a hook portion to be inserted into the top plate 31 side of the landing device 30 may be formed. Alternatively, instead of the slot on the top plate 31, a projection projecting upward is formed at a similar position, and the above-described hook and this projection are engaged with each other, so that the slope is fixed. good. Alternatively, one of the ramp and landing devices 30 may be provided with a hook and the other formed with a ring or hole to which the hook is hooked. Alternatively, by simply placing end portions such as the non-slip portions 14 and 15 on the side of the slopes 10 and 20 on the portions near the first side L1 and the second side L2 of the top plate 31, the landing can be The device 30 and the ramps 10 and 20 may be connected.

<3-5>
The configuration of the lock mechanism 50 is not limited to that described above. For example, at least one of pedals 532, 521 and 532 can be omitted. Further, instead of the urging member 55 as described above, a rotary spring may be attached around the rotating shaft 512 to urge the lever member 51 to the locked state.

<3-6>
In the above-described embodiment, the turntable 33 is provided with the projecting portion 39 for making it easier to recognize that the wheelchair has run on the turntable 33 . However, instead of or in addition to this, in the vicinity of the outer peripheral edge of the turntable 33 on the upper surface 32a of the main body 32, a protruding portion that protrudes upward may be formed along the outer peripheral edge.

1 portable slope 10 first slope 20 second slope 30 landing device 31 top plate 31a top surface 32 body portion 32a upper surface 33 turntable 33a upper surface 331 through hole (locked portion)
39 Protruding portion 50 Locking mechanism 51 Lever members 52, 53 Operating portion 54 Locking portion 55 Biasing member 40 Leg L1 First side L2 Second side P1 First position P2 Second position

Claims (10)

a landing device including a top plate having a top surface and legs supporting the top plate from below;
a first slope;
a second slope;
The top plate is
a main body having an upper surface that forms part of the top surface, and having a first side in a plan view and a second side that forms an angle with the first side;
a turntable having an upper surface forming part of the top surface, arranged to be surrounded by the main body in plan view, and rotatable with respect to the main body in a plane parallel to the top surface; ,
The first slope spans between the first side and the first position,
The second slope spans between the second side and a second position higher than the first position ,
At least one of the turntable and the main body is formed with a protruding portion that protrudes upward along the outer peripheral edge of the turntable,
Portable ramp. one end of the first slope is detachably connected to a portion near the first side of the main body,
One end of the second slope is detachably connected to a portion near the second side of the main body,
A portable ramp according to claim 1. The upper surface of the main body and the upper surface of the turntable are substantially flush with each other,
The portable slope according to claim 1 or 2. the first side and the second side are substantially orthogonal,
The portable slope according to any one of claims 1 to 3 . The landing device comprises:
further comprising a lock mechanism that switches between a locked state that stops rotation of the turntable with respect to the main body and an unlocked state that allows rotation of the turntable with respect to the main body,
The portable slope according to any one of claims 1 to 4 . The locking mechanism is
an operation unit;
a lever member connected to the operating portion and rotating from a position corresponding to the locked state to a position corresponding to the unlocked state when an external force is applied to the operating portion;
a biasing member that biases the lever member to a position corresponding to the locked state;
A portable ramp according to claim 5 . The lever member has a lock portion,
The turntable is formed with a plurality of locked portions that are hooked on the lock portion,
The plurality of locked parts are arranged around the rotation axis of the turntable at intervals of the angle formed by the first side and the second side,
A portable ramp according to claim 6 . a landing device including a top plate having a top surface and legs supporting the top plate from below;
a first slope;
second slope and
with
The top plate is
a main body having an upper surface that forms part of the top surface, and having a first side in a plan view and a second side that forms an angle with the first side;
a turntable having an upper surface forming part of the top surface, arranged to be surrounded by the main body in plan view, and rotatable in a plane parallel to the top surface with respect to the main body;
including
The first slope spans between the first side and the first position,
The second slope spans between the second side and a second position higher than the first position,
The landing device,
A lock mechanism that switches between a locked state that prevents rotation of the turntable with respect to the main body and an unlocked state that allows rotation of the turntable with respect to the main body
further comprising
The locking mechanism is
an operation unit;
a lever member connected to the operating portion and rotating from a position corresponding to the locked state to a position corresponding to the unlocked state when an external force is applied to the operating portion;
a biasing member biasing the lever member to a position corresponding to the locked state;
including,
Portable ramp. A landing device for use with a first slope and a second slope, comprising:
a top plate having a top surface;
and a leg that supports the top plate from below,
The top plate is
a main body having an upper surface that forms part of the top surface, and having a first side in a plan view and a second side that forms an angle with the first side;
a turntable having an upper surface forming part of the top surface, arranged to be surrounded by the main body in plan view, and rotatable with respect to the main body in a plane parallel to the top surface; ,
At least one of the turntable and the main body is formed with a protruding portion that protrudes upward along the outer peripheral edge of the turntable,
A portion near the first side of the body portion is configured to be connectable to one end of the first slope,
A portion near the second side of the body portion is configured to be connectable to one end of the second slope,
landing equipment. A landing device for use with a first slope and a second slope, comprising:
a top plate having a top surface;
legs that support the top plate from below;
with
The top plate is
a main body having an upper surface that forms part of the top surface, and having a first side in a plan view and a second side that forms an angle with the first side;
a turntable having an upper surface forming part of the top surface, arranged to be surrounded by the main body in plan view, and rotatable in a plane parallel to the top surface with respect to the main body;
a lock mechanism that switches between a locked state in which the turntable is prevented from rotating with respect to the main body and an unlocked state in which the turntable is allowed to rotate with respect to the main body;
including
The locking mechanism is
an operation unit;
a lever member connected to the operating portion and rotating from a position corresponding to the locked state to a position corresponding to the unlocked state when an external force is applied to the operating portion;
a biasing member biasing the lever member to a position corresponding to the locked state;
including
A portion near the first side of the body portion is configured to be connectable to one end of the first slope,
A portion near the second side of the body portion is configured to be connectable to one end of the second slope,
landing equipment.

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