Slope device
The slope device addresses the limitation of conventional devices by incorporating angled slope and base portions with rotatable connections and anti-slip features, enabling vehicles to safely traverse obstacles with a gentle gradient.
Patent Information
- Application Number
- JP2025147101
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2025-11-07
AI Technical Summary
Conventional slope devices are not suitable for climbing over obstacles such as footboards, ditches, or cables, limiting their versatility in navigating uneven or complex terrains.
A slope device comprising angled slope portions and a base portion, designed to overcome obstacles by allowing vehicles to transition between high and low positions at a gentle gradient, with rotatable connections and anti-slip features for stability.
Enables vehicles to easily navigate over obstacles like grooves, slippery floors, or cables by providing a stable, gentle incline, ensuring secure installation and preventing displacement on uneven surfaces.
Smart Images

Figure 2025168528000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a slope device. [Background technology]
[0002] BACKGROUND ART Conventionally, the slope device disclosed in Patent Document 1 has been known as a slope device for easily climbing over steps. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-105151 Summary of the Invention [Problem to be solved by the invention]
[0004] The slope device in Patent Document 1 makes it possible to move from a low place to a high place, or vice versa, by using a gradient. However, this slope device may not be suitable for climbing over obstacles such as footboards, ditches, or cables running on the floor.
[0005] The slope device of the present invention has been made in consideration of the above-mentioned problems, and has an object to provide a slope device suitable for climbing over obstacles. [Means for solving the problem]
[0006] The present invention is characterized by comprising a slope portion disposed at an angle, and a base portion that connects the slope portion and is different from the slope portion. [Effects of the Invention]
[0007] According to the present invention, a slope device suitable for climbing over obstacles can be provided. [Brief explanation of the drawings]
[0008] [Figure 1] 1 is a perspective view schematically showing the configuration of a slope device according to a first embodiment. [Figure 2] FIG. 2 is a plan view showing the configuration of a slope device. [Figure 3] FIG. 2 is a side view showing the configuration of a slope device. [Figure 4] FIG. 2 is a bottom view showing the configuration of the slope device. [Figure 5] FIG. 10 is a side view of the slope device when it is used by leaning it against a step. [Figure 6] FIG. 10 is a perspective view showing a slope device of a first modified example. [Figure 7] FIG. 10 is a perspective view showing a slope device of a second modified example. [Figure 8] FIG. 10 is a side view showing the configuration of a slope device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION
[0009] The slope device according to this embodiment will be described below with reference to the drawings. For ease of explanation, in each drawing, the upper side is indicated as Up, the lower side as Lo, the right side as R, the left side as L, the front side as Fr, and the rear side as Rr, as necessary.
[0010] (First embodiment) Fig. 1 is a perspective view schematically showing the configuration of a slope device 100 of a first embodiment. Fig. 2 is a plan view showing the configuration of the slope device 100. Fig. 3 is a side view showing the configuration of the slope device 100. Fig. 4 is a bottom view showing the configuration of the slope device 100. The slope device 100 includes two slope portions 110L and 110R, a base portion 120, a ground portion 130, and a linear portion 140.
[0011] The two slope sections 110L and 110R have the function of allowing people and objects to pass over obstacles at a gentle gradient. The two slope sections 110L and 110R are arranged at an incline with respect to the floor surface. In this embodiment, the slope section 110L and the slope section 110R have the same configuration. Therefore, the following description will mainly focus on the slope section 110L, and the description of the slope section 110R will be omitted as appropriate.
[0012] The slope portion 110L has a generally rectangular shape when viewed from above. The slope portion 110L is disposed on the left side of the base portion 120. The length of the slope section 110L in the front-to-rear direction is, for example, 800 mm to 1200 mm, and the length in the left-to-right direction is, for example, 400 mm to 800 mm. When the gradient of the slope section 110L is expressed as height / left-to-right length of the slope section 110L, the gradient is set to be 1 / 6 or less and 1 / 12 or more. This is in consideration of the "Parking Lot Law Enforcement Ordinance" and "Act on Promotion of Smooth Mobility, etc. of the Elderly, Disabled, etc.", because if the gradient were outside this range, the slope device would become too large or the gradient would become too steep.
[0013] The slope portion 110L has a first slope portion 111L and a second slope portion 112L. The slope portion 110L is arranged in the order of the first slope portion 111L and the second slope portion 112L from left to right. The surfaces (upper surfaces) of the first slope portion 111L and the second slope portion 112L are the same color, for example, silver.
[0014] The first slope portion 111L is in contact with the floor surface and forms an inclined surface that continues from the floor surface. The first slope portion 111L is located to the left of the second slope portion 112L. The first slope portion 111L is, for example, in the shape of a generally flat plate whose length in the front-to-rear direction is longer than its length in the left-to-right direction, and is composed of one piece. The first slope portion 111L is, for example, made of an aluminum alloy and formed by extrusion molding. The first slope portion 111L has a ridge that acts as an anti-slip protrusion integrally formed in the front-to-rear direction on its surface, and its surface is saw-tooth shaped when viewed from the side.
[0015] The first slope portion 111L has a rotated portion 1111L at its right end. The rotated portion 1111L fits into a rotating portion 1121L (described later) of the second slope portion 112L, and they rotate relative to each other. That is, the first slope portion 111L is rotatable relative to the second slope portion 112L about an axis along the front-to-rear direction of the rotating portion 1121L. Note that the rotating portion 1121L and the rotated portion 1111L come into contact with each other and the rotation is restricted once they exceed a certain rotation range. In this embodiment, the rotated portion 1111L is formed integrally with the first slope portion 111L by extrusion molding, but they may also be formed by combining separate members.
[0016] The first slope portion 111L also has a seat portion 1112L that comes into contact with the floor surface. The seat portion 1112L is formed across the front-to-rear direction of the first slope portion 111L. In this embodiment, the seat portion 1112L is formed integrally with the first slope portion 111L by extrusion molding, but it may also be formed by combining separate members. The seat portion 1112L also has a plurality of holes 1113L for fixing to the floor surface using anchor bolts or the like.
[0017] The second slope portion 112L forms an inclined surface that continues from the first slope portion 111L. The second slope portion 112L is connected to the base portion 120. The second slope portion 112L is located between the first slope portion 111L and the base portion 120. The second slope portion 112L is, for example, a substantially flat plate-like member whose length in the front-rear direction is longer than its length in the left-right direction, and is configured as a single piece. The second slope portion 112L is, for example, made of an aluminum alloy and formed by extrusion molding. The second slope portion 112L has a surface integrally provided with ridges serving as anti-slip protrusions extending in the front-rear direction, and its surface has a sawtooth shape when viewed from the side.
[0018] The second slope portion 112L has a rotating portion 1121L at its left end. As described above, the rotating portion 1121L fits into the rotated portion 1111L, and the two rotate relative to each other. That is, the second slope portion 112L is rotatable relative to the first slope portion 111L about an axis along the front-to-rear direction of the rotating portion 1121L. Note that the rotating portion 1121L and the rotated portion 1111L come into contact with each other and the rotation is restricted once they exceed a certain rotation range. In this embodiment, the rotating portion 1121L is formed integrally with the second slope portion 112L by extrusion molding, but they may also be formed by combining separate members.
[0019] The second slope portion 112L has a rotated portion 1122L at its right end. The rotated portion 1122L fits into a rotating portion 1211L (described later) of the base portion 120, and they rotate relative to each other. That is, the second slope portion 112L is rotatable around an axis along the front-to-rear direction of the rotating portion 1211L relative to the base portion 120. Note that the rotated portion 1122L and the rotating portion 1211L come into contact with each other and the rotation is restricted when they exceed a certain rotation range. In this embodiment, the rotated portion 1122L is formed integrally with the second slope portion 112L by extrusion molding, but they may also be formed by combining separate members.
[0020] The second slope portion 112L has angle members 1123L at both ends in the front-rear direction. The angle members 1123L function as stoppers that prevent the second slope portion 112L from sliding relative to the first slope portion 111L or the base portion 120. The rotating part 1121L and the rotated part 1111L, and the rotating part 1211L and the rotated part 1122L are fitted together, so they cannot separate in the left-right direction, but they can slide relative to each other in the front-to-rear direction. To prevent this from happening, angle members 1123L are placed on both ends of the second slope part 112L in the front-to-rear direction as stoppers.
[0021] The angle member 1123L is L-shaped and made of aluminum alloy, and is joined to the second slope portion 112L with screws, rivets, etc., but may be made of other materials or joined by other methods.
[0022] The angle member 1123L is colored a different color, for example, red, from the surfaces of the first slope portion 111L, the second slope portion 112L, and the base portion 120. This allows the angle member 1123L to function as a visual recognition portion for identifying the end of the slope portion 110L. Coloring methods include coloring by surface treatment such as anodizing, coloring by applying paint, coloring by attaching a sticker or the like, and coloring by mixing a coloring agent. In this embodiment, the angle member 1123L is L-shaped, but it may also be a plate member covering the side surface of the end of the second slope portion 112L, or a plate member covering the surface of the end of the second slope portion 112L.
[0023] The base unit 120 is disposed substantially horizontally and has the function of allowing people and objects to pass over obstacles. The base unit 120 has a substantially rectangular shape when viewed from above and from the side. The base unit 120 is disposed between the two slope units 110L and 110R and is connected to the two slope units 110L and 110R. The two slope units 110L and 110R support the base unit 120, thereby separating the base unit 120 from the floor surface. The base portion 120 has a length in the left-right direction of, for example, 800 mm to 1200 mm, and a length in the front-rear direction of, for example, 400 mm to 800 mm. The base portion 120 has a main body portion 121 , a rail member 122 , and an angle member 123 .
[0024] The main body 121 is a base for integrally connecting other components constituting the base 120. As shown in FIG. 3, the main body 121 has a generally U-shaped left and right end, and is generally groove-shaped with an opening downward when viewed as a whole. The main body 121 is made of, for example, an aluminum alloy and formed by extrusion molding. The main body 121 has a surface integrally provided with ridges as anti-slip protrusions extending in the front-rear direction, and the surface has a sawtooth shape when viewed from the side. The main body 121 joins multiple joists 122 by enveloping them with their respective roughly U-shaped portions on the left and right sides. The main body 121 is connected to a sloped portion 110L on the left side and a sloped portion 110R on the right side. The main body 121 also has angle members 123 on both front-rear ends. The surface (top surface) of the main body 121 is, for example, silver.
[0025] The main body 121 has a rotating portion 1211L at its left end. The rotating portion 1211L fits into the rotated portion 1122L, allowing them to rotate relative to each other. That is, the base 120 is rotatable relative to the second slope portion 112L around an axis along the front-to-rear direction of the rotating portion 1211L. Note that the rotating portion 1211L and the rotated portion 1122L come into contact with each other and their rotation is restricted once they exceed a certain rotation range. In this embodiment, the rotating portion 1211L is formed integrally with the base 120 by extrusion molding, but it may also be formed by combining separate members.
[0026] The main body 121 has a rotating portion 1211R at its right end. The rotating portion 1211R fits into the rotated portion 1122R, allowing them to rotate relative to each other. That is, the base 120 is rotatable relative to the second slope portion 112R around an axis along the front-to-rear direction of the rotating portion 1211R. Note that the rotating portion 1211R and the rotated portion 1122R come into contact with each other and their rotation is restricted once they exceed a certain rotation range. In this embodiment, the rotating portion 1211R is formed integrally with the base 120 by extrusion molding, but they may also be formed by combining separate members.
[0027] The beam members 122 are members that support the main body portion 121 and thereby transmit the load applied to the base portion 120 to the slope portions 110L and 110R. The beam members 122 are hollow members with a substantially rectangular cross section, and are joined so as to encase the main body portion 121. In this embodiment, seven beam members 122 are joined to the main body portion 121, but any other number may be used.
[0028] The angle members 123 function as visual recognition parts for identifying the front and rear ends of the base portion 120. The angle members 123 are L-shaped and made of aluminum alloy, and are joined to both ends of the base portion 120 in the front-rear direction. The angle members 123 are joined to the base portion 120 with screws, rivets, etc., but may be made of other materials or joined by other methods.
[0029] The angle member 123 is colored a color different from the surface of the base portion 120, for example, red. Coloring methods include coloring by surface treatment such as anodizing, coloring by applying paint, coloring by attaching a sticker or the like, and coloring by mixing a coloring agent. In this embodiment, the angle member 123 is L-shaped, but it may also be a plate member that covers the side surface of the end of the base portion 120, or a plate member that covers the surface of the end of the base portion 120.
[0030] The recess 124 functions as a handle for the slope device 100. When viewed from the side of the angle member 123, the recess 124 is recessed so that part of the approximately lower half of the approximately central part extends over part of the joist members 122 at both ends in the front-to-rear direction. The recess 124 may be formed during the molding stage of the angle member 123 and the joist member 122, or may be formed by cutting out a part. The size of the recess 124 is not limited, and for example, it may be formed over the entire side surface of the angle member 123.
[0031] The ground contact portion 130 is disposed between the slope portions 110L, 110R and the floor surface. The ground contact portion 130 supports the base portion 120 via the slope portions 110L, 110R. The ground contact portion 130 generates friction with the floor surface, making it difficult for the slope device 100 to move when an external force is applied. As shown in FIG. 4, the grounding portion 130 includes a grounding portion 130a that is long in the left-right direction and a grounding portion 130b that is long in the front-rear direction. A plurality of grounding portions 130a are arranged at intervals in the left-right direction on the rear surface of the first slope portion 111L of the slope portions 110L and 110R. A plurality of grounding portions 130b are arranged at intervals in the left-right direction on the rear surface of the second slope portion 112L of the slope portions 110L and 110R. The grounding portions 130a and 130b are each substantially rectangular when viewed from below. The grounding portions 130a and 130b are made of, for example, a soft synthetic resin.
[0032] As shown in the enlarged view of FIG. 3, the grounding portions 130a and 130b each have a grounding main body 131 and a protrusion 132. The grounding main body 131 is a portion joined to the slope portions 110L, 110R. The grounding main body 131 has through holes that communicate with holes formed in the first slope portions 111L, 111R. The grounding portions 130a, 130b are fixed to the first slope portions 111L, 111R through the through holes of the grounding main body 131 using screws, rivets, etc.
[0033] The protrusions 132 are portions that protrude from the ground-contacting main body 131 toward the floor surface. The protrusions 132 are integral with the ground-contacting main body 131 and are formed to have approximately the same shape in the front-to-rear direction. A plurality of protrusions 132 are formed at intervals in the left-to-right direction and have a sawtooth shape when viewed from the side. The protrusions 132 protrude obliquely from the ground-contacting main body 131 toward the floor surface, extending toward the opposite side of the base portion 120. Specifically, when the angle between the side surface and the floor surface is α on the base portion 120 side and β on the opposite side of the base portion 120 side, the angle α is greater than the angle β. Therefore, when the ground-contacting portions 130a, 130b are in contact with the floor surface, it is difficult to move the ground-contacting portions 130a, 130b toward the opposite side of the base portion 120.
[0034] The linear portion 140 functions as a visual recognition portion for recognizing the boundary between the slope portion 110 and the base portion 120. The linear portion 140 is, for example, a plate-shaped member, and is disposed on both ends of the surface of the base portion 120 in the left-right direction, and is fixed by screws, rivets, or the like. The linear portion 140 is colored a different color, for example, pink, from the surfaces of the first slope portion 111L, the second slope portion 112L, and the base portion 120. The linear portion 140 may be the same color as or a different color from the surfaces of the angle members 1123L, 1123R, and the angle members 123. Coloring methods include coloring by surface treatment such as anodizing, coloring by applying paint, coloring by attaching a sticker, coloring by mixing a coloring agent, and the like. In this embodiment, the linear portion 140 is separate from the base portion 120, but the linear portion 140 may also be integrated with the base portion 120.
[0035] A method for installing the slope device 100 on a floor surface in order to use the slope device 100 configured as described above to overcome an obstacle will be described below. Note that although the following description will be given of a case in which the obstacle is a groove, the same applies to cases in which the obstacle is a slippery floor, cable, etc. Also, the surface of the floor on which the slope device 100 is installed may be slightly uneven. First, the worker brings the slope device 100 to the work site. Next, the worker positions the slope device 100 so that it straddles the groove 151 that the worker is trying to get over (see FIG. 3). Specifically, the worker positions the slope device 100 so that the groove 151 does not overlap the ground contact portions 130 of the slope portions 110L and 110R, in other words, so that the groove 151 is located below the base portion 120.
[0036] At this time, even if the surface of the floor on which the ground contact portion 130 of the slope device 100 is in contact is slightly uneven, the ground contact portion 130 can be brought into contact with the floor surface by rotating between the rotating portions 1121L, 1121R and the rotating portions 1211L, 1211R and the rotated portions 1111L, 1111R and the rotated portions 1122L, 1122R. Therefore, it is possible to prevent a part of the ground contact portion 130 from not being in contact with the floor surface due to the unevenness of the floor surface, and it is possible to prevent a part of the slope portions 110L, 110R from floating up. Finally, the worker can install the slope device 100 on the floor by fastening it to the floor surface using anchor bolts or the like through the holes 1113L, 1113R of the first slope portions 111L, 111R.
[0037] As described above, the slope device 100 of this embodiment includes two slope sections 110L and 110R that are arranged at an angle, and a base section 120 that is connected to the two slope sections 110L and 110R. Therefore, by installing the slope device 100 on the floor surface so that an obstacle is located below, the slope section 110L allows the vehicle to move from a low position to a high position at a gentle gradient, the base section 120 allows the vehicle to pass over the obstacle, and the slope section 110R allows the vehicle to move from a high position to a low position at a gentle gradient, making it possible to easily overcome the obstacle.
[0038] The slope device 100 of this embodiment can be used by being set up against a step. Here, a method for setting up the slope device 100 against a step will be described. FIG. 5 is a side view of the slope device 100 when it is used by leaning it against a step 152. First, the worker brings slope device 100 to the work site. Next, the worker places slope portion 110R of slope device 100 on the upper level of step 152, and places slope portion 110L on the lower level away from step 152. At this time, the worker adjusts the orientation and position of slope device 100 so that slope portion 110R does not protrude from the upper level of step 152.
[0039] In this case, even if there is some contact with the surface of the floor on which the ground contact portion 130 of the slope device 100 comes into contact, the ground contact portion 130 can be brought into contact with the floor by rotating between the rotating portions 1121L, 1121R, rotating portions 1211L, 1211R and the rotated portions 1111L, 1111R, rotated portions 1122L, 1122R. Finally, the worker can secure the slope device 100 to the floor surface using anchor bolts or the like that are passed through the holes 1113L, 1113R of the first slope portions 111L, 111R, thereby leaning the slope device 100 against a step.
[0040] Furthermore, the method of installing the slope device 100 is not limited to the method described above. For example, the slope device 100 may be fixed to one of the holes 1113L of the slope section 110L with an anchor bolt, and then the orientation may be adjusted and the slope device 100 may be fixed to the other hole using an anchor bolt. Furthermore, when the slope device 100 is used by leaning it against something, the height of the step 152 is preferably 20 mm or more and less than 100 mm, and more preferably 20 mm or more and less than 70 mm. This is because, as mentioned above, the gradient of the slope portions 110L, 110R is set to be in the range of 1 / 6 or less and 1 / 12 or more, and if the height is outside this range, it will fall outside the set gradient range.
[0041] (First Modification) FIG. 6 is a perspective view showing a case where the slope devices 100 are arranged side by side. In the above-described embodiment, the case where a single slope device 100 is used has been described, but multiple slope devices 100 may also be used. For example, when it is necessary to allow a wide person or object to pass at a slope, the slope devices 100 are arranged side by side with no gaps between them, as shown in FIG. 6. In this case, the slope devices 100 may have a connecting portion and a connected portion at their front and rear ends, respectively. By connecting the connecting portion of one slope device 100 to the connected portion of the other slope device 100, the slope devices 100 can be prevented from separating from each other.
[0042] (Second Modification) FIG. 7 is a perspective view showing the slope device 100 with side guards attached thereto. As shown in Figure 7, the slope device 100 may have side guards 160 attached to both ends of the slope sections 110L, 110R in the front-to-rear direction. The side guards 160 prevent people or objects from sticking out from both ends in the front-to-rear direction and falling off when passing over the slope sections 110L, 110R. The side guards 160 are made of an aluminum alloy, are hollow, and have a generally trapezoidal cross section, but may be made of other materials and have other cross-sectional shapes.
[0043] (Second embodiment) In the first embodiment, the beam member 122 arranged on the back surface of the base part 120 does not come into contact with the floor surface. In the second embodiment, a case will be described in which a part of the beam member 222 of the base part 120 of the slope device 200 comes into contact with the floor surface. FIG. 8 is a side view of the slope device 200 of the second embodiment. The base 120 of the slope device 200 has a beam member 222. The beam member 222 has an arch portion 153 as a recess with a portion hollowed out on the surface facing the floor. Legs located at the front and rear ends of the arch portion 153 come into contact with the floor. Because the beam member 222 has the arch portion 153, even large obstacles can be overcome by positioning the obstacle below the arch portion 153. Note that, although the base 120 has been described as having only a portion of the beam member 222 in contact with the floor, the beam member 222 may also be configured to come into contact with the floor across the entire left-right direction.
[0044] The present invention has been described above using various embodiments, but the present invention is not limited to the above-described embodiments, and modifications and variations are possible within the scope of the present invention, and the embodiments and variations may be combined as appropriate. In the above-described embodiment, the slope portion 110L, the base portion 120, and the slope portion 110R are arranged linearly along the left-right direction, but this is not the only possible arrangement. For example, the slope portion 110L and the slope portion 110R may be arranged so as to sandwich the base portion 120 and form an L shape when viewed from above. That is, the slope portion 110L may be rotatably connected to the front or rear side of the base portion 120, or the slope portion 110R may be rotatably connected to the front or rear side of the base portion 120.
[0045] In the above-described embodiment, the slope device 100 has been described as having two slope portions 110L and 110R, but this is not limited to this. For example, the slope device 100 may have only one slope portion, or may have three or four slope portions. When the slope device 100 has three slope portions, for example, in addition to the two slope portions 110L and 110R, a third slope portion is rotatably connected to the front or rear side of the base portion 120. In this case, the third slope portion can be configured similarly to the slope portions 110L and 110R. When the slope device has four slope portions, for example, in addition to the two slope portions 110L and 110R, a third slope portion is rotatably connected to the front side of the base portion 120 and a fourth slope portion is rotatably connected to the rear side of the base portion 120. In this case, the third or fourth slope portion can be configured in the same manner as the slope portions 110L and 110R. [Explanation of symbols]
[0046] 100: Slope device 110L, 110R: Slope portion 111L, 111R: First slope portion 112L, 112R: Second slope portion 1112L, 1112R: Seat portion 1121L, 1121R, 1211L, 1211R: Rotating portion 1111L, 1111R, 1122L, 1122R: Rotated portion 1113L, 1113R: Hole 120: Base portion 121: Main body portion 122: Rail member 123, 1123L, 1123R: Angle member 124: Recess 130: Ground contact portion 131: Ground contact main body portion 132: Protrusion portion 140: Linear portion 151: Groove 152: Step 153: Arch portion 160: Side guard
Claims
1. two slope portions arranged at an angle; a base portion connected to the two slope portions.
2. The base portion is 2. The slope device according to claim 1, wherein the slope device is disposed substantially horizontally and is connected to the two slope portions so as to be rotatable within a predetermined rotation range.
3. The base portion is 3. The slope device according to claim 1, wherein the slope device is spaced apart from the floor surface.
4. The base portion is 3. The slope device according to claim 1, wherein at least a portion of the base portion is in contact with a floor surface.
5. It has a grounding part that comes into contact with the floor surface, 5. The slope device according to claim 1, wherein the grounding portion supports the base portion via the two slope portions.
6. The grounding portion is A plurality of protrusions are provided along the front-rear direction, 6. The slope device according to claim 5, wherein the plurality of protrusions are saw-tooth shaped when viewed from the side.
7. The slope portion is 7. The slope device according to claim 1, wherein the slope is 1 / 6 or less and 1 / 12 or more.
8. The base portion is Convex stripes are formed on the surface along the front-to-back direction, 8. A slope device according to claim 1, wherein the surface is saw-tooth shaped when viewed from the side.
9. 9. The slope device according to claim 1, wherein the end of the base portion has a linear portion colored a color different from the color of the surface of the base portion.
10. A slope device comprising at least two slope devices according to any one of claims 1 to 9 arranged side by side.
11. The slope portion is 11. The slope device according to claim 1, further comprising side guards for preventing the slope portion from falling off from both ends.
Citation Information
Patent Citations
Slope device and slope unit
JP2019105151A