Vehicle ramp structure

Abstract

The goal is to incorporate a short-slope structure into the vehicle while ensuring greater convenience. [Solution] In a vehicle ramp structure where the short ramp structure 20 is positioned higher than the road surface 100, the short ramp structure 20 has a first ramp section 21 fixed to the vehicle body (tailgate section) and a second ramp section 22 connected to the first ramp section 21 so as to be vertically rotatable. The second ramp section 22 is displaceable between a stowed position on the first ramp section 21 and an extended position positioned one step lower than the first ramp section 21 by rotating vertically.

Description

Technical Field

[0001] The present invention relates to a slope structure of a vehicle in which a short slope structure provided at a vehicle door opening is disposed at a position higher than the road surface.

Background Art

[0002] A technique related to this type of vehicle structure is disclosed in Patent Document 1. In the vehicle of this Patent Document 1, a door opening formed at the rear thereof is configured to be openable and closable by an up-and-down swingable back door. A tailgate is provided at the lower part of the door opening. The tailgate is connected to the vehicle body so as to be vertically swingable, and is configured to be displaceable between a state of standing upright on the upper side of the vehicle and a state of falling backward on the rear side of the vehicle, that is, a state of downward opening.

[0003] Here, the above-described vehicle may be used as a welfare vehicle, such as by providing a slope structure for guiding a wheelchair into the vehicle interior at the lower part of the door opening. As this type of slope structure, a long slope structure for passing a slope plate between the vehicle interior and the road surface is known. However, in this structure, the slope plate becomes long, etc., and the boarding and alighting space for the wheelchair becomes large. Therefore, in the above-described technique, it is conceivable to fix a slope plate on the downward-opening tailgate, that is, to adopt a short slope structure. In this short slope structure, since a relatively short slope plate is disposed on the tailgate (at a position higher than the road surface), the boarding and alighting space can be made more compact than in the long slope structure.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the field of welfare vehicles, there is a need to ensure excellent convenience when boarding, from the perspective of reducing the burden on the occupants. However, in the case of the short ramp structure described above, the ramp plate on the tailgate is positioned higher than the road surface. As a result, when boarding, the wheelchair must be tilted significantly to lift its front wheels onto the ramp plate, which may make it difficult to ensure convenience. This invention was conceived in view of the above points, and the problem that this invention aims to solve is to provide a short ramp structure on a vehicle while more reliably ensuring convenience. [Means for solving the problem]

[0006] As a means to solve the above problems, the vehicle ramp structure of the first invention comprises a vehicle door opening, a vehicle body constituting the lower part of the door opening, and a short ramp structure disposed on the vehicle body, the short ramp structure being positioned higher than the road surface. In this type of configuration, it is desirable to provide the short ramp structure on the vehicle while ensuring convenience more reliably. Therefore, the short ramp structure of the present invention has a first ramp section fixed to the vehicle body and a second ramp section connected to the first ramp section so as to be vertically rotatable. The second ramp section can be displaced between a stowed position on the first ramp section and an extended position positioned one step lower than the first ramp section by rotating vertically. In the present invention, by extending the second ramp section to a lower position, it becomes easier to load a wheelchair onto the short ramp structure, contributing to the assurance of convenience. Furthermore, by displacing the second ramp section to the stowed position, it can also be used as a normal short ramp structure.

[0007] The vehicle ramp structure of the second invention is a vehicle ramp structure of the first invention in which a passage section leading from the outside to the inside of the vehicle is formed by a first ramp section and a second ramp section, and a valley-shaped section is provided in the passage section, which is sloped to form a valley by at least one of the first ramp section and the second ramp section. In the present invention, when a wheelchair is boarded, the wheels of the wheelchair can be secured in the valley-shaped section provided at an appropriate location on each ramp section.

[0008] The vehicle ramp structure of the third invention is the vehicle ramp structure of the second invention, in which the valley-shaped section is composed of a first ramp section and a second ramp section in a storage position. In this invention, even when used as a normal short ramp structure, the function of the valley-shaped section makes it possible to more reliably ensure convenience.

[0009] The vehicle ramp structure of the fourth invention is a vehicle ramp structure of any of the first to third inventions, wherein the first ramp section has a base plate section on the vehicle body and a rotating plate section that can rotate up and down about a first rotation axis relative to the base plate section. The second ramp section is also capable of rotating up and down about a second rotation axis relative to the first ramp section, and the second rotation axis is positioned lower on the vehicle than the first rotation axis. In this invention, the rotating plate section of the first ramp section can be positioned inside the vehicle together with the second ramp in its stored position by rotating it about the first rotation axis. By positioning the second rotation axis relatively lower on the vehicle, the second ramp section can be deployed more reliably at the desired height.

[0010] The vehicle ramp structure of the fifth invention is a vehicle ramp structure of the fourth invention, wherein a towable belt is provided between the first ramp section and the second ramp section on the upper side of the vehicle, and the free end of the belt is fixed to the first ramp section, while the belt is slidably inserted into an insertion section provided in the second ramp section. In this invention, the second ramp can be rotated to a storage position by pulling the belt, and the first ramp section can be rotated toward the interior of the vehicle. With the above configuration, the storage of the short ramp structure can be more appropriately ensured, and the configuration contributes to ensuring the convenience of the structure.

[0011] The vehicle ramp structure of the sixth invention is an improved version of the vehicle ramp structure of the fifth invention, in which a flexible reinforcing member is attached to the belt portion. In this invention, the reinforcing member makes it possible to suppress the unintended tilting of the belt portion in an unintended direction (for example, outward in the vehicle width direction). [Effects of the Invention]

[0012] According to the first invention of the present invention, a short slope structure can be installed on a vehicle while ensuring convenience more reliably. According to the second invention, the convenience of the short slope structure can be ensured even more reliably. According to the third invention, convenience can be ensured even more reliably when used as a normal short slope structure. According to the fourth invention, the convenience of the short slope structure can be ensured even more reliably. According to the fifth invention, the convenience of the short slope structure can be ensured more appropriately. According to the sixth invention, the convenience of the short slope structure can be ensured even more appropriately. [Brief explanation of the drawing]

[0013] [Figure 1] This is a schematic perspective view of the rear of the vehicle. [Figure 2] This is a schematic cross-sectional view of the vehicle showing the movable part of the tailgate. [Figure 3] This is a schematic perspective view of the vehicle showing the tailgate in a reclined position. [Figure 4] It is a schematic perspective view of a vehicle showing a short slope structure when deployed. [Figure 5] It is a schematic enlarged perspective view showing a short slope structure when deployed. [Figure 6] It is a schematic cross-sectional view of a vehicle showing a short slope structure when deployed. [Figure 7] It is a cross-sectional view taken along line VII-VII of FIG. 5 showing the second slope portion in the deployed position. [Figure 8] It is a schematic cross-sectional view of a vehicle showing the second slope portion in the stowed position. [Figure 9] It is a schematic cross-sectional view of each slope portion showing the belt portion. [Figure 10] It is a schematic perspective view of each slope portion showing the belt portion and the reinforcing member. [Figure 11] It is a schematic cross-sectional view of a vehicle during the operation of stowing the second slope portion. [Figure 12] It is a schematic cross-sectional view of a part of the short slope structure showing a wheelchair during boarding.

Mode for Carrying Out the Invention

[0014] Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. 1 to 12. In each figure, arrow lines indicating the front-rear direction, left-right direction (vehicle width direction), and up-down direction (vehicle height direction) of the vehicle are illustrated. And in each figure, the main configuration of this embodiment is illustrated by a solid line, and the illustration of other vehicle configurations may be simplified and illustrated by a broken line or the like or the illustration may be omitted.

[0015] [Overview of the Vehicle] First, the overview of the vehicle 2 shown in FIG. 1 will be described. The vehicle 2 is configured such that a rear door opening 3 provided on its rear surface can be opened and closed by an up-and-down rotating back door 4. Further, at the lower part of the vehicle 2, rear bumper covers 5 and 6 are respectively disposed at the left and right positions of the rear door opening 3. And at the lower part of the rear door opening 3, a tailgate portion 10 constituting a part of the vehicle body is provided. This tailgate portion 10 is arranged between the left and right rear bumper covers 5 and 6 by being provided so as to extend in the vehicle width direction.

[0016] Referring to FIGS. 1 and 2 here, the tailgate part 10 has a fixed part 11 fixed to other vehicle body parts and a movable part 12 connected to the rear side of the vehicle of this fixed part 11. Here, a rotating shaft 13 extending in the vehicle width direction is held at the rear end of the fixed part 11 via a bracket part 110. Also, the movable part 12 is configured to be displaceable between a standing state and a rearwardly tilted state by being connected to the rotating shaft 13 so as to be able to rotate up and down with respect to the rotating shaft 13. And the movable part 12 in the standing state shown in FIG. 1 stands up so as to be continuous in the vehicle width direction to the left and right rear bumper covers 5 and 6. Also, the movable part 12 in the rearwardly tilted state shown in FIG. 3 is arranged to extend to the rear side of the vehicle at a position lower than the left and right rear bumper covers 5 and 6. Note that the movable part 12 is held in either the standing state or the rearwardly tilted state by the action of a locking mechanism (not shown).

[0017] [Vehicle slope structure] Referring to FIGS. 3 and 4, a short slope structure 20 is provided in the tailgate part 10 of the vehicle 2 described above. And in the vehicle 2, by arranging the relatively short short slope structure 20 at a position higher than the road surface 100, the compactification of the boarding and alighting space is achieved. In this type of configuration, from the viewpoint of reducing the burden on passengers (the assisted person on the wheelchair and the caregiver, etc.), ensuring the convenience of the short slope structure 20 is required. Therefore, in this embodiment, with the configuration described later, the short slope structure 20 is provided in the vehicle 2 while more surely ensuring the convenience. Hereinafter, each configuration of the short slope structure 20 will be described in detail in the order of the first slope part 21, the second slope part 22, the valley parts 41 to 43, and the belt part 50.

[0018] [First slope part] First, the first slope section 21 shown in Figure 5 is formed in a plate shape extending in the vehicle width direction and is disposed on the tailgate section 10. Referring to Figures 5 and 6, this first slope section 21 has a base plate section 23, a rotating plate section 24, and a first rotating shaft 31 that axially connects the two plate sections. The base plate section 23 is positioned on the tailgate section 10 (vehicle body) and extends from the fixing section 11 to the floor side of the passenger compartment R. The first rotating shaft 31 is attached to the rear end of the base plate section 23 so as to extend in the vehicle width direction. The rotating plate section 24 is fixed to the movable section 12 of the tailgate section 10 via a bracket 120, while being connected to the first rotating shaft 31 so as to be able to rotate up and down. With the above configuration, the rotating plate section 24 of the first slope section 21 can rotate up and down together with the movable section 12, allowing it to be displaced between a stowed state and an extended state. The deployed rotating plate section 24 is positioned so as to extend in the longitudinal direction of the vehicle on the reclined movable section 12. The base plate section 23, which is axially connected to the rotating plate section 24, is pulled out towards the rear of the vehicle in a state of slight downward tilt (see Figures 2 and 6). Referring to Figures 1 and 2, the retracted rotating plate section 24 stands upright within the vehicle compartment R together with the movable section 12.

[0019] [Second slope section] Next, the second slope section 22 shown in Figures 5 and 6 is formed in a plate shape extending in the vehicle width direction, similar to the first slope section 21, and is axially connected to the rear end of the first slope section 21. That is, the rear end of the first slope section 21 in its extended state is provided with an upper step section 26 that is bent downwards toward the vehicle. The front end of the second slope section 22 is provided with a lower step section 27 that is bent upwards toward the vehicle. The upper end of the lower step section 27 is axially connected to the lower end of the upper step section 26 via a second rotating shaft 32 that extends in the vehicle width direction. With the above configuration, the second rotating shaft 32 is positioned between each step section, so that it is located lower on the vehicle than the first rotating shaft 31 (see the height position H31 of the first rotating shaft and the height position H32 of the second rotating shaft in Figure 6). The second slope section 22 is then able to rotate up and down around the second rotating shaft 32, which is located relatively lower on the vehicle.

[0020] Referring to Figures 7 and 8, the second slope section 22 is configured to be displaceable between a stowed position and an unfolded position by rotation around the second rotation axis 32 described above. In the unfolded position shown in Figure 7, the second slope section 22 extends to the rear of the vehicle at a lower position than the first slope section 21, because the second rotation axis 32 is positioned on the underside of the vehicle. As a result, the height position H1 of the tip of the second slope section 22 relative to the road surface 100 is lower than the height position H2 of the tip side (excluding the upper step portion 26) of the first slope section 21 relative to the road surface 100. The rear end of the second slope section 22 in the unfolded position is positioned against the first slope section 21. Referring to Figure 8, the second slope section 22 is displaced to a stowed position superimposed on the first slope section 21 by upward and forward rotation around the second rotation axis 32.

[0021] [Aisle section, valley section] In the vehicle 2 ramp structure shown in Figures 2 and 5, a stepped passageway 40A connecting the outside and inside of the vehicle is formed from the first ramp section 21 and the second ramp section 22, which is one level lower. Referring to Figure 7, the stepped passageway 40A has multiple valley-shaped sections that are sloped to form a valley. Specifically, the first ramp section 21 has a rotating plate section 24 that is bent into a gentle, approximately V-shape when viewed from the side. As a result, the front side of the rotating plate section 24 is sloped downwards towards the rear, and the rear side is sloped downwards towards the front, forming an upper valley-shaped section 41 that is approximately V-shaped when viewed from the side. Similarly, the second ramp section 22 has a gentle downward slope towards the front at its tip, forming a lower valley-shaped section 42 that is approximately V-shaped when viewed from the side.

[0022] Furthermore, in the ramp structure of vehicle 2 shown in Figure 3, the second ramp section 22 in the storage position is superimposed on the first ramp section 21 to form a normal short ramp structure 20. The first ramp section 21 and the second ramp section 22 in the storage position then form a normal passage section 40B that leads from the outside to the inside of the vehicle. Referring further to Figure 8, in the normal passage section 40B, the tip of the second ramp section 22 is superimposed on the rearward-sloping front side of the first ramp section 21 in a forward-sloping state. As a result, in the normal passage section 40B, a roughly V-shaped intermediate valley section 43 is formed from the rearward-sloping front side of the first ramp section 21 and the forward-sloping tip of the second ramp section 22.

[0023] [Belt section] Next, the belt section 50 shown in Figure 5 is a moderately flexible strip-shaped member (for example, made of fabric) that is towable from the top of the vehicle and spans between the first slope section 21 and the second slope section 22. This belt section 50 is positioned on the outer side in the vehicle width direction of each slope section (closer to the right end in Figure 5) to avoid unintended contact with wheelchairs, etc., passing over the short slope structure 20. Referring to Figures 5 and 9, the belt section 50 is bent back into a horizontal U-shape in a side view and is attached to both slope sections so as to wrap around them from top to bottom. The upper free end 51 of this belt section 50 is inserted into the gap X between the two plate sections of the first slope section 21 and fixed to the front end of the rotating plate section 24, and the lower free end 52 of the belt section 50 is fixed to the rear end of the rotating plate section 24. The rear connecting end 53 of the belt section 50 is slidably passed through an insertion section 28 that penetrates the front end of the first slope section 21 vertically, and a ring-shaped handle 54 provided on the connecting end 53 is positioned below the insertion section 28. By slidably inserting (holding) the belt section 50 through the insertion section 28 of the first slope section 21 in this way, unintended detachment of the belt section 50 can be avoided, and in particular, the belt section 50 becomes less likely to come off outward in the vehicle width direction.

[0024] As shown in Figures 9 and 10, a flexible reinforcing member 55 is attached to the lower part of the belt section 50. This reinforcing member 55 is formed in the shape of a strip along the lower part of the belt section 50 (see Figure 9) and is fixed to the belt section 50 so as to be integrated with it. The material of this type of reinforcing member 55 is not particularly limited, but examples include various foamed resins, elastomers, and rubber. Referring to Figure 11, the belt section 50 is pulled up to the upper side of the vehicle when the short slope structure 20, which will be described later, is being stored. During this storage operation, the reinforcing member 55 prevents sagging of the belt section 50 and makes it less likely to fall outwards from the vehicle.

[0025] [Usage patterns of short slope structures] Referring to Figures 4 and 5, the ramp structure of the vehicle 2 described above is configured to ensure superior convenience while taking into account the distance between the short ramp structure 20 and the road surface 100. Specifically, referring to Figures 7 and 8, the short ramp structure 20 has a first ramp section 21 fixed to the tailgate section 10 (vehicle body) and a second ramp section 22 connected to the first ramp section 21 so as to be vertically rotatable. The second ramp section 22 is displaceable between a stored position on the first ramp section 21 and an extended position located one step lower than the first ramp section 21 by rotating vertically. With the above configuration, the function of the second ramp section 22 makes it easier to load a wheelchair 60 onto the short ramp structure 20, thus contributing to ensuring convenience. The function of the short ramp structure 20 described above will be explained in detail below in the order of usage examples (1) and (2).

[0026] [Usage example (1)] In the ramp structure of vehicle 2 shown in Figures 5 and 7, the tailgate section 10 is tilted backward together with the first ramp section 21. Then, while the rotating plate section 24 of the first ramp section 21 is extended, the second ramp section 22 is positioned in the extended position. As a result, a stepped passage section 40A is provided on the tailgate section 10 so as to extend in the front-rear direction of the vehicle. The second ramp section 22 in the extended position extends towards the rear of the vehicle at a relatively lower position, so that its distance from the road surface 100 is smaller than that of the first ramp section 21. For this reason, as described above, the height position H1 of the second ramp section 22 relative to the road surface 100 is lower than the height position H2 of the first ramp section 21 relative to the road surface 100.

[0027] Referring to Figures 7 and 12, when loading the wheelchair 60, first, one of the left or right front wheels, for example, the left front wheel 70, is placed onto the second slope section 22. Then, with the left front wheel 70 remaining in place on the lower valley section 42, the remaining front wheel, the right front wheel 71, is placed onto the second slope section 22. Next, the left front wheel 70 is placed onto the first slope section 21 (for convenience, the front wheels on the first slope section are shown with a dashed line in each figure). Then, with the left front wheel 70 remaining in place on the upper valley section 41, the right front wheel 71 is placed onto the first slope section 21. By alternately placing the left and right front wheels onto the second slope section 22 and the first slope section 21 in this way, the physical burden on the caregiver can be reduced. With the above configuration, it becomes possible to load the wheelchair 60 without requiring excessive effort, and differences in physical strength among caregivers can be compensated for. Furthermore, in the above configuration, before loading the wheelchair 60 onto the first ramp section 21, the wheelchair 60 can be temporarily placed onto the second ramp section 22 with a small backward tilt angle θ. This allows the wheelchair 60 to be tilted in two stages when boarding, reducing the mental burden on the person being cared for while in the wheelchair 60. Then, by alternately loading the left and right rear wheels 72 and 73 of the wheelchair 60 onto the second ramp section 22 and the first ramp section 21, the wheelchair 60 can be smoothly guided into the vehicle compartment R.

[0028] [Storage operation of the short slope structure] Next, referring to Figures 9 and 11, the handle portion 54 of the belt portion 50 is pulled upward to store the short slope structure 20 inside the vehicle. In this storage operation, the second slope portion 22 is first rotated forward by the traction force of the belt portion 50 and displaced to the storage position. At this time, the belt portion 50 will generally stand upright due to the action of its reinforcing member 55, and slack in the belt portion 50, especially slack in its front portion 50X, can be suppressed. This prevents unintended contact between the belt portion 50 and the vehicle body (for example, the lateral portion of the tailgate located on the right side). Furthermore, even if the belt portion 50 is unintentionally pushed outward in the vehicle width direction, the reinforcing member 55 will cause the belt portion 50 to naturally return to its original position (see Figure 5).

[0029] Next, referring to Figures 2 and 11, the belt section 50 is pulled further upward. As a result, the first slope section 21 is raised together with the movable section 12 by the pulling force of the belt section 50. The first slope section 21 and the second slope section 22 (storage position) then stand upright, overlapping each other, and are positioned in the vehicle interior R on the inner side of the movable section 12 (see Figure 1) in the upright position. With the above configuration, the upward pulling operation of the belt section 50, i.e., in one motion, allows the second slope section 22 to be placed in the storage position and then further stored in the vehicle interior R together with the first slope section 21. Furthermore, in the above configuration, since the storage operation is performed by the belt section 50, there is no need to separately provide handles for each slope section (and tailgate section), resulting in a configuration that helps to suppress cost increases.

[0030] [Usage example (2)] Furthermore, in the ramp structure of vehicle 2, as shown in Figures 3 and 8, the second ramp section 22 can be positioned in a retracted position, and only the first ramp section 21 can be folded down. As a result, a normal passage section 40B is formed on the tailgate section 10 from the first ramp section 21 and the second ramp section 22 in the retracted position, making it possible to use it as a normal short ramp structure 20. In the above-mentioned normal passage section 40B, an intermediate valley-shaped section 43 is formed from the first ramp section 21 and the second ramp section 22 in the retracted position. As a result, the left front wheel 70 and the right front wheel 71 of the wheelchair 60 can be secured in the intermediate valley-shaped section 43, which helps to reduce the burden on the caregiver.

[0031] As explained above, in this embodiment, by deploying the second ramp section 22 at a lower position, it becomes easier to load the wheelchair 60 onto the short ramp structure 20, thus contributing to ensuring convenience. Furthermore, by displacing the second ramp section 22 to its stored position, it can also be used as a normal short ramp structure 20. Therefore, according to this embodiment, the short ramp structure 20 can be installed on the vehicle 2 while ensuring convenience more reliably.

[0032] Furthermore, in this embodiment, when a wheelchair 60 is boarded, the wheels of the wheelchair 60 can be secured in the valley-shaped sections (upper valley-shaped section 41, lower valley-shaped section 42, intermediate valley-shaped section 43) provided at appropriate locations on each slope section. Also, in this embodiment, even when used as a normal short slope structure 20, the function of the valley-shaped sections makes it possible to more reliably ensure convenience. Also, in this embodiment, the rotating plate section 24 of the first slope section 21 can be rotated around the first rotation axis 31 and positioned inside the vehicle together with the second slope in its storage position. By positioning the second rotation axis 32 relatively below the vehicle, the second slope section 22 can be deployed more reliably at the desired height. Also, in this embodiment, the second slope can be rotated to its storage position by the towing of the belt section 50, and the first slope section 21 can be rotated towards the inside of the vehicle. According to the above configuration, the storage of the short slope structure 20 can be more appropriately ensured, and the configuration contributes to ensuring the convenience of the structure. In this embodiment, the reinforcing member 55 helps to suppress the unintended tilting of the belt portion 50 in an unintended direction (for example, outward in the vehicle width direction).

[0033] The vehicle ramp structure of this embodiment is not limited to the embodiment described above, and various other embodiments are possible. In this embodiment, a short ramp structure configuration is illustrated, but this is not intended to limit the configuration. For example, the first ramp section can be installed not only on the tailgate section but also on the vehicle body section located below the door opening. The number of ramp sections can also be set as appropriate, and three or more ramp sections can be provided. For example, a third ramp section, which is one step lower, may be provided on the rear side of the second ramp section. The configuration of each rotating shaft is not particularly limited as long as the corresponding ramp section can be rotated up and down. The method of loading the front wheels of a wheelchair onto each ramp section is not particularly limited.

[0034] Furthermore, while this embodiment illustrates the configuration of each slope section, it is not intended to limit the configuration of each slope section. For example, if there is no tailgate section, the first slope section may be made of a single sheet of material and placed on the lower part of the vehicle body (e.g., the floor) below the door opening. The first and second rotation axes may also be placed at the same height, in which case the lower step portion of the second slope section can be extended significantly upward and axially connected to the second rotation axis. The valley-shaped section can be formed on at least one of each slope section and can also be omitted. The valley-shaped section only needs to have a desired gradient and can take various shapes other than a V-shape, and the gradient may be applied in a curved manner as well as an inclined surface. The configuration of the belt section can also be changed as appropriate, and the handle portion may be made of a separate member and can be omitted from the short slope structure. The belt section may also be made of a thick, self-supporting material, and self-supporting includes being able to extend naturally up and down by placing a hand on it from the rear. A ring-shaped or U-shaped protrusion may be provided as an insertion part on the second slope section (front part or front end, etc.). Furthermore, instead of a belt, handles can be formed on each ramp section. This configuration can be used not only for boarding various wheeled welfare devices but also for boarding and alighting general wheeled devices such as bicycles, and can also be used as a temporary place to put luggage. The short ramp structure can be installed at various door openings and can be installed at the rear of the vehicle as well as at any appropriate position on the vehicle. The term "road surface" is a concept that includes not only paved roads but also unpaved roads, the ground, and indoor floors. [Explanation of Symbols]

[0035] 2 vehicles 3. Rear door opening 4 Back door 5,6 Rear bumper cover 10. Tailgate section (vehicle body of the present invention) 11 Fixed part 12 Moving parts 13 rotational axes 20 Short slope structure 21 First Slope Section 22 Second Slope Section 23 Base plate section 24 Rotating plate section 26 Upper step difference 27 Lower step part 28 Insertion part 31 First rotation axis 32 Second rotation axis 40A Stepped passage section 40B Normal passage section 41 Upper valley section 42 Lower valley 43 Intermediate valley section 50 Belt section 51 Upper free end 52 Lower free end 53 Connecting end 54 Handle part 55 Reinforcement member 60 wheelchairs 70 Left front wheel 71 Right front wheel 72, 73 Rear wheels 100 Road surface

Claims

1. The vehicle comprises a door opening, a vehicle body forming the lower part of the door opening, and a short slope structure disposed on the vehicle body, wherein the short slope structure is positioned higher than the road surface, The short slope structure comprises a first slope section fixed to the vehicle body and a second slope section connected to the first slope section so as to be vertically rotatable. The vehicle ramp structure is such that the second ramp section can be displaced by rotating up and down between a storage position on the first ramp section and an extended position located one step lower than the first ramp section.

2. The first slope section and the second slope section form a passage that connects the outside and inside of the vehicle, The vehicle ramp structure according to claim 1, wherein the passage section is provided with a valley-shaped section that is sloped to form a valley by at least one of the first ramp section and the second ramp section.

3. The vehicle ramp structure according to claim 2, wherein the valley-shaped portion is composed of the first ramp portion and the second ramp portion in the storage position.

4. The first slope portion comprises a base plate portion on the vehicle body and a rotating plate portion that can rotate up and down about a first rotation axis relative to the base plate portion. The vehicle ramp structure according to any one of claims 1 to 3, wherein the second ramp section is rotatable vertically with respect to the first ramp section about a second rotation axis, and the second rotation axis is positioned lower on the vehicle than the first rotation axis.

5. A vehicle ramp structure according to claim 4, wherein a towable belt is provided between the first ramp and the second ramp on the upper side of the vehicle, and the belt is slidably inserted into an insertion portion provided in the second ramp, with its free end fixed to the first ramp.

6. The vehicle ramp structure according to claim 5, wherein a flexible reinforcing member is attached to the belt portion.

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