JP2021110093A - Boundary block and suspension tool - Google Patents

Abstract

To provide a boundary block that can further reduce a management burden.SOLUTION: A boundary block 1 that is provided at a boundary of a road and separates a first side and a second side comprises: a curb part 11 that is located above a road surface R1 on the first side; a foundation part 12 that is integrated with a lower end part of the curb part 11; a drainage channel 2 that is formed inside the foundation part 12 and extends in an X direction; and a conduit 3 that has an inlet port 31 located on a side surface of the first side of the curb part 11 and an outlet port 32 located above the drainage channel 2, and guides water on the road surface R1 from the inlet port 31 to the outlet port 32, wherein a lower end E1 of the inlet port 31 is located on the same surface as the road surface R1, the conduit 3 has a bottom surface 331 that extends from the lower end E1 of the inlet port 31 to the second side and is located on the same surface as the road surface R1, and an opposing surface 332 that extends from an upper end E2 of the inlet port 31 to the second side and has a part of the first side facing the bottom surface 331, and a part of the bottom surface 331 is located on the second side than a virtual surface VP1 connecting a center C1 of the drainage channel 2 in Z and X directions and the upper end E2 of the inlet port 31.SELECTED DRAWING: Figure 2

Description

The present invention relates to a boundary block having a drainage function and a hanging tool for suspending the boundary block.

Generally, as a boundary block for separating a roadway and a sidewalk, an apron having a flowing water surface inclined downward toward the outside in the crossing direction of the road is widely used on the side of the road on the roadway side. In the conventional boundary block, rainwater is allowed to flow on the apron, and rainwater is allowed to flow down the street basins installed at predetermined intervals in the longitudinal direction of the road to drain the roadway side. However, since rainwater tends to collect in the apron, it may cause water splash or slip of the vehicle. In addition, the apron is inclined slightly stronger than the roadway, and the boundary with the roadway may be slightly uneven, which may hinder the running of the bicycle.

In order to deal with the above problems, a boundary block in which a drainage channel is formed along the road longitudinal direction has been proposed (Patent Documents 1 and 2). Patent Document 1 includes a boundary block in which a drainage receiving port is provided on an upright surface on the road side, and a drainage channel is formed inside the underground buried portion to allow drainage infiltrating from the drainage receiving port to flow in a direction along the road. It is disclosed. Patent Document 2 discloses a boundary block in which the upper end of the drainage channel is arranged at a position higher than the upper end of the inlet of the headrace hole in order to further improve the drainage capacity.

JP-A-2002-88707 Japanese Unexamined Patent Publication No. 2019-44544

Since dust (for example, earth and sand, fallen leaves, etc.) that has flowed in from the road collects in the drainage channel of the boundary block, maintenance is required to wash away the dust. In maintenance, for example, a head of a high-pressure washer is inserted into a drainage channel from a basin installed at predetermined intervals, and dust in the drainage channel is washed away by high-pressure water jetted from the head. When injecting high-pressure water, in the boundary blocks of Patent Documents 1 and 2, since the high-pressure water is vigorously ejected from the water-conducting holes, it is necessary to close the water-conducting holes with tape or the like before injecting the high-pressure water.

Further, in the boundary block of Patent Documents 1 and 2, when a passerby of a road drops his belongings (for example, a smartphone, a key, coins, etc.) on the road surface, the belongings are likely to fall from the headrace hole to the drainage channel. Items that have fallen into the drainage channel cannot be easily picked up, so in some cases it may be necessary for the manager to go to the site, remove some boundary blocks, and collect the belongings.

Therefore, an object of the present invention is to provide a boundary block capable of further reducing the management burden.

(1) The boundary block of the present invention is a boundary block provided at the boundary of a road and separating the first side and the second side, and has a curb portion located above the road surface on the first side and a curb portion. A foundation portion integrated with the lower end portion of the curb portion, a drainage channel formed inside the foundation portion and extending in the longitudinal direction of the road, and an entrance located on the first side side surface of the curb portion. A headrace having an outlet located at the upper part of the drainage channel and guiding water on the road surface from the inlet to the outlet.
The lower end of the entrance is located on the same surface as the road surface on the first side, and the headrace extends from the lower end of the entrance to the second side and is the same as the road surface on the first side. It has a bottom surface located on the surface and a facing surface extending from the upper end of the inlet to the second side and a part of the first side facing the bottom surface, and a part of the bottom surface is the drainage. It is a boundary block located on the second side of the virtual surface connecting the center of the road in the vertical direction and the road crossing direction with the upper end of the entrance.

According to such a configuration, since the bottom surface of the headrace blocks the center of the drainage channel and the inlet of the headrace, high-pressure water cannot be ejected in a straight line from the center of the drainage channel to the entrance of the headrace. , The momentum is weakened by colliding with either the inner surface of the drainage channel or the inner surface of the headrace. As a result, it is possible to prevent high-pressure water from being vigorously ejected from the entrance of the headrace. Further, when a passerby drops his / her belongings on the road surface on the road side, it is possible to prevent the belongings from falling directly into the drainage channel. As described above, according to the boundary block of the present invention, the management burden can be further reduced.

(2) Preferably, the first distance from the lower end of the entrance to the second end of the bottom surface is longer than the second distance from the lower end of the entrance to the upper end of the entrance. With such a configuration, belongings sized to enter the entrance can be more reliably retained on the bottom surface. As a result, it is possible to more reliably prevent the belongings from falling into the drainage channel, and it is possible to reduce the work of the manager to urgently collect the belongings.

(3) Preferably, the headrace is formed by an inner surface including the bottom surface and the facing surface, is provided in a horizontal path extending from the inlet in the road longitudinal direction, and inside the foundation portion, and extends in the vertical direction. It has a vertical path formed by an inner surface including a vertical surface, the vertical path connecting to the horizontal path on the upper side and connecting to the upper part of the drainage channel on the lower side. According to such a configuration, since it is difficult for the belongings that have fallen on the road surface to enter the horizontal road from the entrance, it is possible to reduce the work of the manager to urgently collect the belongings.

(4) Preferably, the facing surface has a recess recessed upward in a portion located on the upper side of the vertical path. According to such a configuration, when cleaning the boundary block, the high-pressure water collides with the facing surface, spreads in the inlet direction, and then collides with the recess. In this way, the high-pressure water collides with the inner surface of the headrace a plurality of times and the momentum is weakened, so that it is possible to more reliably prevent the high-pressure water from being ejected from the inlet.

(5) Preferably, the foundation portion has an apron surface that is wider on the first side than the curb portion and is located on the same surface as the road surface on the first side, and the bottom surface is said. It is connected to the apron surface on the first side. Since the apron surface is located on the same surface as the road surface, the water flowing on the road surface can be smoothly guided to the headrace.

(6) The hanging tool of the present invention is a hanging tool that suspends any of the boundary blocks (1) to (5), and the boundary block is formed inside the curbstone portion, and the curbstone portion is formed. A suspension hole penetrating from the upper surface to the facing surface is further provided, and the suspension hole and the headrace form a linear through-passage passing through the upper part of the drainage channel and the upper surface of the curb portion, and the suspension is formed. The tool has a hooking portion that is hooked on the upper inner peripheral surface of the drainage channel, and the hooking portion that is inserted into the drainage channel through the hanging hole and the headrace can contact the inner peripheral surface. It is a hanging tool that suspends the boundary block.

Here, the drainage channel is located at the center of gravity of the boundary block or near the center of gravity. Since the hanger supports the boundary block at or near the center of gravity of the boundary block, the worker who installs the boundary block can easily suspend the boundary block and orient the suspended boundary block in the horizontal direction. It can be easily fine-tuned. This makes it possible to facilitate the installation work of the boundary block.

According to the present invention, the management burden of the boundary block can be further reduced.

It is a perspective view of the boundary block which concerns on 1st Embodiment. It is sectional drawing of the boundary block which concerns on 1st Embodiment. It is a partial cross-sectional perspective view which shows the lower part of the boundary block which concerns on 1st Embodiment. It is a partial cross-sectional perspective view which shows the lower part of the boundary block which concerns on 2nd Embodiment. It is explanatory drawing of the boundary block which concerns on 3rd Embodiment. It is explanatory drawing which shows the center of the drainage channel of the boundary block which concerns on 3rd Embodiment. It is sectional drawing of the boundary block which concerns on 4th Embodiment. It is explanatory drawing of the boundary block which concerns on 5th Embodiment. It is explanatory drawing of the boundary block which concerns on 6th Embodiment. It is explanatory drawing of the hanging tool used for the boundary block which concerns on 6th Embodiment. It is explanatory drawing of the boundary block which concerns on 7th Embodiment. It is a perspective view of the boundary block which concerns on 8th Embodiment. It is explanatory drawing of the boundary block which concerns on 9th Embodiment. It is a perspective view of the boundary block which concerns on 10th Embodiment. It is a perspective view of the boundary block which concerns on 11th Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the following figures, the XYZ Cartesian coordinate system is appropriately shown in order to clarify the configuration of each part of the boundary block. Specifically, the horizontal plane is the XY plane, and the vertical direction is the Z direction. Of the horizontal plane, the X direction is the road longitudinal direction and the Y direction is the road crossing direction. The direction side pointed by each arrow XYZ is the "first side" in each direction, and the opposite side of the direction pointed by the arrow is the "second side". In particular, in the following embodiments, the first side in the Y direction is the roadway side, and the second side in the Y direction is the sidewalk side. Further, the first side in the Z direction is the upper side, and the second side in the Z direction is the lower side.

[First Embodiment]
[1. Boundary block configuration]
The boundary block 1 according to the present embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view showing a boundary block 1 viewed from diagonally above. At the boundary between the roadway and the sidewalk, a plurality of boundary blocks 1 are arranged in a state of being connected to each other along the road longitudinal direction (hereinafter, simply referred to as "X direction"). Further, at the boundary between the roadway and the sidewalk, a catchment basin (not shown) is arranged for each of a predetermined number of boundary blocks 1.

The boundary block 1 includes a curb portion 11 located above the road surface R1 on the roadway side, and a foundation portion 12 integrated with the lower end portion of the curb portion 11. The curb portion 11 and the foundation portion 12 are members formed of concrete, respectively. Inside the foundation portion 12, a drainage channel 2 extending in the X direction is formed. Inside the curb portion 11, a headrace 3 is formed to guide water on the roadway side to the drainage channel 2.

In the present embodiment, the curb portion 11 and the foundation portion 12 are formed as a single member. That is, the curb portion 11 and the foundation portion 12 are integrally formed so as to be seamlessly connected. However, the curb portion 11 and the foundation portion 12 may be formed as separate members, and the curb portion 11 may be detachably placed on the upper end portion of the foundation portion 12 like a lid. In this way, the state in which the curb portion 11 is placed on the foundation portion 12 is also expressed as "integrated" between the curb portion 11 and the foundation portion 12.

2 (a) and 2 (b) are cross-sectional views of the boundary block 1 in the YZ plane including the headrace 3. For the sake of simplicity of displaying the reference numerals, the boundary block 1 is shown separately in FIGS. 2 (a) and 2 (b), and the boundary block 1 itself is shown between FIGS. 2 (a) and 2 (b). There is no difference. In the drawings after FIG. 2, hatching is added to the portion showing the cross section.

See FIG. 2 (a). The curb portion 11 has a trapezoidal cross-sectional shape (or a cross-sectional shape based on the trapezoid and partially deformed from the trapezoid), and has a function as a curb that separates the roadway and the sidewalk on the ground. The foundation portion 12 has a rectangular cross-sectional shape (or a cross-sectional shape based on the rectangle and partially deformed from the rectangle), and functions as a foundation for fixing the curb portion 11 to the ground by being buried in the ground. Has.

The foundation portion 12 has an apron surface 121 that is wider on the road side than the curb portion 11 and is located on the same surface as the road surface R1. The roadside end of the apron surface 121 is connected to the road surface R1. Further, the foundation portion 12 is wider on the sidewalk side than the curb portion 11. The widened portion of the foundation portion 12 on the sidewalk side is located below the road surface R2 on the sidewalk side, and is buried in the ground on the sidewalk side.

The drainage channel 2 has a circular cross-sectional shape. The drainage channel 2 is a through hole formed by an inner peripheral surface located near the center of the YZ plane of the foundation portion 12. The drainage channel 2 has a function of guiding the water flowing inside to the catchment basin.

The headrace 3 has an inlet 31 located on the side surface of the curb portion 11 on the roadway side and an outlet 32 located above the drainage channel 2. The lower end E1 of the entrance 31 is located at the end of the apron surface 121 on the sidewalk side, and is located on the same surface as the road surface R1. The upper end E2 of the inlet 31 is located above the lower end E1. The headrace 3 has a horizontal passage 33 extending in the Y direction from the inlet 31 and a vertical passage 34 extending in the Z direction from the outlet 32. That is, as shown in FIG. 2, the headrace 3 has an L-shaped bent cross-sectional shape.

The horizontal road 33 is provided inside the curb portion 11. The horizontal road 33 is formed by an inner surface including a bottom surface 331 and an facing surface 332. The bottom surface 331 extends from the lower end E1 of the entrance 31 toward the sidewalk along the Y direction and is located on the same surface as the road surface R1. That is, the bottom surface 331 is located on the same surface as the apron surface 121. Further, the roadside end of the bottom surface 331 is connected to the sidewalk side end of the apron surface 121. The facing surface 332 is a surface extending from the upper end E2 of the entrance 31 toward the sidewalk along the Y direction. A part of the facing surface 332 on the roadway side faces the bottom surface 331 in the Z direction.

The bottom surface 331 is located at a position that blocks the center C1 of the drainage channel 2 and the inlet 31. More specifically, a part of the bottom surface 331 is located on the sidewalk side of the virtual surface VP1 connecting the center C1 of the drainage channel 2 and the upper end E2 of the inlet 31. The virtual surface VP1 is shown by a alternate long and short dash line in FIG. 2, but is actually a virtual surface having a width in the X direction as well. The center C1 of the drainage channel 2 means the center of the drainage channel 2 in the YZ plane. That is, the center C1 is the center of the drainage channel 2 in the Y direction and the Z direction. Since the cross-sectional shape of the drainage channel 2 is circular, the center C1 is the center of the circle.

In the present embodiment, the road surface R1 has a downward gradient Gr1 from the center side of the roadway to the curb portion 11 side with respect to the XY surface (horizontal plane). The gradient Gr1 is, for example, 2% (an angle of about 1 degree). Further, the apron surface 121 and the bottom surface 331 have a gradient Gr1 like the road surface R1. Since the road surface R1 has a gradient Gr1, it is possible to easily guide water (rainwater or the like) on the road surface R1 to the boundary block 1 side. Further, since the apron surface 121 and the bottom surface 331 have a gradient Gr1, the water flowing from the road surface R1 can be easily guided to the drainage channel 2. That is, the gradient Gr1 can suppress the retention of water on the road surface R1, the apron surface 121, and the bottom surface 331.

The apron surface 121 and the bottom surface 331 may have a gradient different from that of the road surface R1. The apron surface 121 and the bottom surface 331 may have a gradient slightly larger than the gradient Gr1 or may not have a gradient. That is, the apron surface 121 and the bottom surface 331 may be surfaces along the XY surface (that is, a horizontal plane). In this case as well, the apron surface 121 and the bottom surface 331 are located on substantially the same surface as the road surface R1, and therefore, in the present disclosure, even if the slopes are slightly different (for example, within 5%), they are "located on the same surface". Express. Further, the apron surface 121 and the bottom surface 331 may have slightly different gradients.

Since the apron surface 121 is located on the same surface as the road surface R1, it is easy to adjust the height (level adjustment) between the road surface R1 and the apron surface 121 when installing the boundary block 1 at the boundary between the roadway and the sidewalk. Can be done. Therefore, the apron surface 121 can reduce the burden of the installation work of the boundary block 1. Further, since the apron surface 121 is located on the same surface as the road surface R1, the water flowing through the road surface R1 can be smoothly guided to the headrace 3.

In the present embodiment, the road surface R2 on the sidewalk side is located above the road surface R1 on the roadway side. The road surface R2 may be at the same position as the road surface R1 in the Z direction.

The vertical path 34 is formed by an inner surface including vertical faces 341 and 342. The vertical faces 341 and 342 are surfaces provided inside the foundation portion 12. A part of the vertical plane 341 is also provided inside the curb portion 11. The vertical path 34 is connected to the horizontal path 33 on the upper side and to the drainage channel 2 on the lower side. More specifically, the vertical plane 341 connects to the facing surface 332 on the upper side and to the drainage channel 2 on the lower side. Further, the vertical plane 342 connects to the bottom surface 331 on the upper side and to the drainage channel 2 on the lower side. The end E3 is the end where the vertical surface 342 and the bottom surface 331 are connected (that is, the upper end of the vertical surface 342 and the sidewalk side end of the bottom surface 331). The end E3 is located on the sidewalk side of the virtual surface VP1.

The width of the bottom surface 331 in the Y direction is wider than the width of the inlet 31 in the Z direction. That is, as shown in FIG. 2B, the distance L1 from the lower end E1 of the inlet 31 to the end E3 of the bottom surface 331 is longer than the distance L2 from the lower end E1 of the inlet 31 to the upper end E2 of the inlet 31.

The vertical plane 341 and the vertical plane 342 face each other with a predetermined width in the Y direction. The predetermined width is narrower than the width of the drainage channel 2 in the Y direction. That is, the vertical path 34 has a width narrower in the Y direction than the drainage channel 2.

FIG. 3 is a partial cross-sectional perspective view showing a lower portion of the boundary block 1 cut in the XY plane including the vertical path 34. The vertical road 34 is provided only at a position corresponding to the entrance 31 in the X direction. That is, in the present embodiment, in the upper part of the drainage channel 2, the portion corresponding to the portion without the inlet 31 (for example, the end portions on the first side and the second side in the X direction of the boundary block 1) is a vertical path 34. Is not provided, and the upper part of the drainage channel 2 is closed.

[2. Boundary block action and effect]
The operation of the boundary block 1 will be described. When supplying high-pressure water into the drainage channel 2 in order to wash away the dust accumulated in the drainage channel 2, the head of the high-pressure washer is positioned at the center C1 (or below the center C1) of the drainage channel 2. Inject high-pressure water with the head facing slightly downward. At this time, the high-pressure water flushes the dust accumulated on the bottom (lower surface) of the drainage channel 2 in the X direction, and a part of the high-pressure water is reflected from the bottom of the drainage channel 2 toward the upper side of the drainage channel 2. , It is ejected from the outlet 32 of the headrace 3 into the inside of the headrace 3.

In the conventional boundary block (Patent Documents 1 and 2), the high-pressure water is guided because the high-pressure water reaches the inlet of the headrace without being blocked by anything (that is, the momentum of the high-pressure water is hardly weakened). It spouts vigorously from the entrance of the waterway. On the other hand, in the boundary block 1 according to the present embodiment, the bottom surface 331 of the headrace 3 blocks the center C1 of the drainage channel 2 and the inlet 31 of the headrace 3. Due to this configuration, the high-pressure water cannot be ejected in a straight line from the center C1 of the drainage channel 2 to the inlet 31 of the headrace 3, and collides with either the inner peripheral surface of the drainage channel 2 or the inner surface of the headrace 3. Momentum is weakened.

Specifically, the high-pressure water ejected from the outlet 32 of the headrace 3 into the inside of the headrace 3 climbs the vertical passage 34 in the vertical direction and collides with the facing surface 332 of the headrace 3, so that the momentum is weakened. Return from the vertical path 34 to the drainage channel 2. Further, some of the high-pressure water may reach the inlet 31 side, but since it is the high-pressure water after colliding with the inner surface of the headrace 3, it does not spout out from the inlet 31 vigorously as in the conventional case. As a result, the administrator does not need to attach a tape or the like to the entrance 31 when cleaning the boundary block 1, and the man-hours for cleaning work can be reduced.

Further, since the bottom surface 331 of the headrace 3 blocks the center C1 of the drainage channel 2 and the inlet 31 of the headrace 3, when a passerby drops his / her belongings on the road surface R1 on the roadway side, the drainage channel 2 It is possible to prevent the belongings from falling directly to. Specifically, since the headrace 3 has a horizontal road 33 extending in the Y direction and the entrance 31 is located on the side surface of the curb portion 11, the belongings that have fallen on the road surface R1 enter the horizontal road 33 from the entrance 31. It's hard to do. Further, even when the belongings enter the headrace 3 from the inlet 31, the belongings are supported by the bottom surface 331, so that the belongings can be more reliably prevented from falling into the drainage channel 2. This can reduce the work of the manager to urgently collect the belongings. As described above, according to the boundary block 1 according to the present embodiment, the management burden can be further reduced.

Further, since the width (L1) of the bottom surface 331 in the Y direction is wider than the width (L2) of the entrance 31 in the Z direction, it is possible to more reliably retain the belongings of a size entering the entrance 31 on the bottom surface 331. As a result, it is possible to more reliably prevent the belongings from falling into the drainage channel 2.

Further, since the length of the headrace 3 in the vertical direction is shorter than that of the conventional one, it is possible to more reliably prevent the headrace 3 from being clogged by dust flowing in from the road. Conventionally, a headrace for guiding water flowing on a road surface to a drainage channel having a circular cross-sectional shape is, for example, a headrace slit disclosed in Japanese Patent Application Laid-Open No. 2017-186745 (see FIG. 1). In many cases, it extends vertically from a position that does not include the apex. However, with such a structure, the length of the headrace in the vertical direction becomes long, and clogging due to dust is likely to occur accordingly. On the other hand, since the headrace 3 according to the present embodiment has a configuration in which the drainage channel 3 extends vertically from a position including the apex in the vertical direction of the drainage channel 2, the length of the headrace 3 in the vertical direction should be shorter than before. Can be done. As a result, the headrace 3 is less likely to be clogged with dust, and the management burden on the boundary block 1 can be further reduced.

Although the first embodiment of the present disclosure has been described above, the present disclosure can be modified in various ways other than the above-described embodiment. Hereinafter, other embodiments of the present disclosure (second to eleventh embodiments) will be described. In the second and subsequent embodiments, the same configurations as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

[Second Embodiment]
FIG. 4 is a perspective view showing the boundary block 1a according to the second embodiment in the same manner as in FIG. That is, FIG. 4 is a partial cross-sectional perspective view showing a lower portion of the boundary block 1a cut in the XY plane including the vertical path 34a. The boundary block 1a according to the second embodiment is different from the boundary block 1 according to the first embodiment in that the vertical path 34a is provided over the entire boundary block 1a in the X direction, and other points are common. .. That is, the vertical road 34a includes not only the positions corresponding to the entrance 31 and the horizontal road 33 in the X direction, but also the portions without the entrance 31 and the horizontal road 33 (for example, the ends on the first side and the second side in the X direction). A vertical path 34a is also provided at the corresponding position.

More specifically, the vertical faces 341a and 342a are provided over the entire boundary block 1a in the X direction. The lower sides of the vertical faces 341a and 342a are all connected to the drainage channel 2. The upper side of the vertical plane 341a has a portion connected to the facing surface 332 and a portion connected to the lower end of the curb portion 11. The upper side of the vertical plane 342a has a portion connected to the bottom surface 331 and a portion connected to the lower end of the curb portion 11. That is, the upper side of the vertical road 34a provided at a position corresponding to the portion without the entrance 31 and the horizontal road 33 is blocked by the lower end of the curb portion 11.

By providing the vertical path 34a over the entire boundary block 1a in the X direction, when the vertical path 34a is formed inside the foundation portion 12, the foundation portion 12 can be concrete-formed using one core mold. Therefore, the manufacturing cost of the boundary block 1a can be reduced.

[Third Embodiment]
FIG. 5 is an explanatory diagram showing the boundary block 1b according to the third embodiment. FIG. 5A is a perspective view showing a boundary block 1b viewed from diagonally above, and FIG. 5B is a cross-sectional view of the boundary block 1b in the YZ plane including the headrace 3a. The boundary block 1b according to the third embodiment is a boundary according to the first embodiment in that the drainage channel 2a has an egg-shaped cross-sectional shape and the horizontal path 33a of the headrace 3a is connected to the upper part of the drainage channel 2a. It differs from block 1 and has other points in common.

The drainage channel 2a is provided from the inside of the foundation portion 12 to the upper end, and is connected to the horizontal passage 33a at the upper end of the foundation portion 12. The horizontal road 33a is formed by an inner surface including a bottom surface 331, an facing surface 332, and a vertical surface 341. The upper part of the drainage channel 2a is connected to the lower end of the vertical plane 341 and the end E3 of the bottom surface 331.

FIG. 6 is an explanatory diagram showing the center of gravity C2 of the drainage channel 2a. The intersection of the virtual line VL1 shown in FIG. 6A and the virtual line VL2 shown in FIG. 6B is the center of gravity C2 of the drainage channel 2a as shown in FIG. 6C. In this embodiment, the center of gravity C2 corresponds to the "center" of the drainage channel 2a. The virtual line VL1 is a virtual line that equally divides the cross-sectional area of the drainage channel 2a in the YZ plane in the Z direction. The cross-sectional area Ar1 of the drainage channel 2a above the virtual line VL1 and the cross-sectional area Ar2 of the drainage channel 2a below the virtual line VL1 are equal. That is, the virtual line VL1 is the center line in the Z direction of the drainage channel 2a. The virtual line VL2 is a virtual line that equally divides the cross-sectional area of the drainage channel 2a in the Y direction. The cross-sectional area Ar3 of the drainage channel 2a on the sidewalk side of the virtual line VL2 and the cross-sectional area Ar4 of the drainage channel 2a on the roadway side of the virtual line VL2 are equal. That is, the virtual line VL2 is the center line of the drainage channel 2a in the Y direction.

The drainage channel 2a has the cross-sectional shape shown in FIG. 5B over the entire X direction. Therefore, the center of gravity C2 of the drainage channel 2a is located on a straight line extending in the X direction when viewed three-dimensionally. As shown in FIG. 6C, a part of the bottom surface 331 is located on the sidewalk side of the virtual surface VP2 connecting the center of gravity C2 of the drainage channel 2a and the upper end E2 of the inlet 31, and the bottom surface 331 is the drainage channel 2a. It blocks the center of gravity C2 and the upper end E2 of the entrance 31.

As in the present embodiment, the drainage channel 2a having a non-circular cross-sectional shape is also washed out of dust by injecting high-pressure water from a head located at the center of gravity C2 (or below the center of gravity C2). Since the bottom surface 331 of the high-pressure water blocks the center of gravity C2 of the drainage channel 2a and the upper end E2 of the inlet 31, the high-pressure water cannot reach the inlet 31 directly from the drainage channel 2a, and either the drainage channel 2a or the headrace 3a. By colliding with the inner surface of the, the momentum is weakened. As a result, the man-hours for cleaning work can be reduced as in the first embodiment. In addition, the bottom surface 331 can prevent the belongings from falling directly into the drainage channel 2a.

[Fourth Embodiment]
FIG. 7 is a cross-sectional view of the boundary block 1c according to the fourth embodiment. The boundary block 1c is different from the boundary block 1 according to the first embodiment in that the portion of the facing surface 332 located above the vertical path 34 has a recess 333 recessed upward, and other points are common. ..

The recess 333 has a surface 333a facing the drainage channel 2 via the vertical path 34, and a stepped surface 333b which is a step connecting the portion of the facing surface 332 facing the bottom surface 331 and the surface 333a. The stepped surface 333b is a surface along the XZ plane and faces the vertical plane 341 in the Y direction. The virtual surface VP3 connecting the end E4 connecting the vertical surface 341 and the surface 333a and the end E5 connecting the portion of the facing surface 332 facing the bottom surface 331 and the stepped surface 333b intersects the bottom surface 331. More specifically, the virtual surface VP3 intersects the bottom surface 331 on the sidewalk side of the lower end E1 of the entrance 31.

When cleaning with high-pressure water, the high-pressure water that comes out of the drainage channel 2 and climbs the vertical path 34 in the vertical direction collides with the surface 333a of the recess 333, and the momentum is weakened. After colliding with the surface 333a, some high-pressure water spreads in the Y direction. However, in the present embodiment, the high-pressure water spreading from the surface 333a to the roadway side in the Y direction collides with the stepped surface 333b, so that it is possible to more reliably prevent the high-pressure water from being ejected from the inlet 31. Further, a part of the high-pressure water that collides with the recess 333 is reflected by the recess 333 and flows in the direction along the virtual surface VP3, and collides with the bottom surface 331 before reaching the inlet 31. As a result, the high-pressure water collides with a plurality of locations in the headrace 3b before reaching the inlet 31, and the momentum is weakened, so that the high-pressure water can be prevented from being ejected from the inlet 31.

[Fifth Embodiment]
FIG. 8 is an explanatory diagram showing the boundary block 1d according to the fifth embodiment. FIG. 8A is a cross-sectional view of the boundary block 1d according to the fifth embodiment. FIG. 8B is a cross-sectional view of the boundary block 1da according to the modified example of the fifth embodiment.

See FIG. 8 (a). The boundary block 1d is different from the boundary block 1 according to the first embodiment in that the sidewalk side headrace 4 for guiding the water flowing on the sidewalk side road surface R2 to the drainage channel 2 is provided. The points are common. The sidewalk-side headrace 4 has an inlet 41 located on the sidewalk-side side surface of the curb portion 11 and an outlet 42 located on the vertical surface 341 of the headrace 3. The lower end E6 of the entrance 41 is connected to the road surface R2. The upper end of the exit 42 is located below the upper end of the vertical plane 341.

When cleaning with high-pressure water, the high-pressure water that comes out of the drainage channel 2 and climbs the vertical path 34 in the vertical direction collides with the facing surface 332 and then spreads in the Y direction. However, in the present embodiment, since the upper end of the outlet 42 is located below the upper end of the vertical plane 341, the high-pressure water spreading from the facing surface 332 to the sidewalk side in the Y direction may reach the inlet 41 in a straight line. Instead, it collides with the inner surface of either the headrace 3 or the sidewalk side headrace 4 before reaching the inlet 41. As a result, it is possible to prevent the high-pressure water from being ejected from the inlet 41. Since the road surface R2 is located on the upper side of the road surface R1, the width of the sidewalk side headrace 4 is smaller in the Z direction than that of the headrace 3. For this reason, the high-pressure water may gain momentum in the narrower sidewalk-side headrace 4. In the present embodiment, since the outlet 42 is connected below the upper end of the vertical plane 341, it is possible to more reliably prevent high-pressure water from being ejected from the inlet 41 of the sidewalk side headrace 4.

Further, as compared with the conventional boundary block (for example, Patent Document 1), the boundary block 1d of the present embodiment is provided with a vertical path 34 extending in the vertical direction from the upper part of the drainage channel 2 inside the curb portion 11. , The distance from the sidewalk side of the curb portion 11 to the headrace 3 (vertical surface 341) can be further shortened. As a result, it is possible to easily drill a vertical surface 341 from the sidewalk side of the curb portion 11 with a hand-held tool (for example, an electric drill). The sidewalk side headrace 4 is provided by installing the boundary block 1d at the boundary between the roadway and the sidewalk and then drilling the boundary block 1d on the spot with a tool. As a result, the sidewalk side headrace 4 can be flexibly provided according to the situation at the site where the boundary block 1d is constructed (for example, the height of the sidewalk). The sidewalk side headrace 4 may be provided before the boundary block 1d is installed.

See FIG. 8 (b). The boundary block 1da is installed at the boundary between the road surface R1 on the road side and the road surface R2 on the sidewalk side having the same height. The boundary block 1da has a sidewalk-side headrace 4a for guiding water flowing on the sidewalk-side road surface R2 to the drainage channel 2. The sidewalk side headrace 4a has the same shape as the horizontal headrace 33 of the headrace 3 when viewed from the Y direction. That is, the sidewalk side headrace 4a and the horizontal road 33 form one through hole penetrating from the roadway side to the sidewalk side. With this configuration, the horizontal road 33 and the sidewalk side headrace 4a can be formed in the curb portion 11 using one core mold. Therefore, the manufacturing cost of the boundary block 1da can be reduced.

[Sixth Embodiment]
FIG. 9 is an explanatory diagram showing a boundary block 1e according to the sixth embodiment. FIG. 9A is a perspective view showing a boundary block 1e viewed from diagonally above. FIG. 9B is a cross-sectional view of the boundary block 1e. The boundary block 1e is different from the boundary block 1 according to the first embodiment in that a hanging hole 5 is provided in the curb portion 11, and other points are common. The hanging hole 5 is a through hole that opens in the upper surface of the curb portion 11 and the facing surface 332, respectively. The suspension hole 5 and the headrace 3 form a linear gangway that passes through the upper part of the drainage channel 2 and the upper surface of the curb portion 11. The width W1 of the hanging hole 5 in the X direction is larger than the width W2 of the hanging hole 5 in the Y direction.

FIG. 10 is an explanatory view of a hanging tool 51 used for suspending the boundary block 1e using the hanging hole 5. FIG. 10A is an explanatory diagram showing a schematic configuration of the hanging tool 51. The hanger 51 has a rod-shaped member 52, a hooking portion 53, and a locking portion 54. The hooking portion 53 is provided at one end of the rod-shaped member 52, and the locking portion 54 is provided at the other end of the rod-shaped member 52. The locking portion 54 is a portion for locking the hook or wire of the crane. In the present embodiment, the locking portion 54 is annular, but the shape is not limited to the annular shape as long as the hook, wire, or the like can be locked.

FIG. 10B is an explanatory diagram showing a detailed configuration of the hook portion 53. The hook portion 53 has a flat shape. The hook portion 53 has a curved surface 531 corresponding to the shape of the upper inner peripheral surface of the drainage channel 2 and a bottom surface 532. As shown in FIG. 10B, one width W3 of the hooking portion 53 is larger than the other width W4. Further, the width W3 of the hook portion 53 is smaller than the width W1 of the hanging hole 5, and the width W2 of the hanging hole 5 and the width of the vertical path 34 in the Y direction (that is, the distance between the vertical plane 341 and the vertical plane 342). ) Is larger than. Further, the width W4 of the hooking portion 53 is smaller than the width W2 of the hanging hole 5.

Next, a procedure for suspending the boundary block 1e with the suspending tool 51 will be described. FIG. 10 (c) is an explanatory view showing a state in which the hanging tool 51 is being inserted into the hanging hole 5, and FIG. 10 (d) is after the insertion of the hanging tool 51 into the hanging hole 5 is completed. It is explanatory drawing which shows the state of. As shown in FIG. 10C, the hooking portion 53 is inserted into the hanging hole 5 in a state where the width W4 is directed toward the width W2 of the hanging hole 5. Since the width W3 is smaller than the width W1 and the width W4 is smaller than the width W2, the hooking portion 53 is inserted to the drainage channel 2 through the suspension hole 5 and the headrace 3.

As shown in FIG. 10D, the hook portion 53 inserted into the drainage channel 2 is rotated by 90 degrees in the XY plane. Since the width W3 is larger than the width of the vertical path 34 in the Y direction, the hooking portion 53 is hooked on the upper inner peripheral surface of the drainage channel 2 after rotating 90 degrees. In this state, the hook or wire of the crane is locked to the locking portion 54, and the suspending tool 51 is lifted by the crane. At this time, the curved surface 531 of the hooking portion 53 comes into contact with the upper inner peripheral surface of the drainage channel 2. Therefore, the hanger 51 can suspend the boundary block 1e by supporting the inner peripheral surface of the drainage channel 2 with the hook portion 53. As a result, when the boundary block 1e is installed at the boundary between the roadway and the sidewalk, the boundary block 1e can be easily lifted by inserting the hanging tool 51 into the hanging hole 5.

Here, the drainage channel 2 is located at the center of gravity of the boundary block 1e or near the center of gravity. Since the hanger 51 supports the boundary block 1e at or near the center of gravity of the boundary block 1e, the worker who installs the boundary block 1e can easily fine-tune the horizontal orientation of the suspended boundary block 1e. be able to. This makes it possible to facilitate the installation work of the boundary block 1e. The cross-sectional area of the hanging hole 5 in the XY plane may be wide enough to allow the hanging tool 51 to be inserted, and is sufficiently smaller than the cross-sectional area of the headrace 3 (particularly, the vertical path 34). Therefore, it is possible to prevent high-pressure water from being ejected from the suspension hole 5 during cleaning. Further, the hanging hole 5 may be closed with a putty or the like after the boundary block 1e is installed.

[7th Embodiment]
FIG. 11 is an explanatory diagram showing a boundary block 1f according to the seventh embodiment. FIG. 11A is a perspective view showing a boundary block 1f viewed from diagonally above. FIG. 11B is a cross-sectional view of the boundary block 1f. The boundary block 1f is different from the boundary block 1 according to the first embodiment in that a vertical hole 6 for cleaning is provided in the curb portion 11, and other points are common.

The vertical hole 6 is a through hole that opens in the upper surface of the curb portion 11 and the facing surface 332, respectively. The vertical hole 6 has, for example, a width equal to or less than the width of the headrace 3 in the X direction in the X direction (note that the case of the same width is illustrated in FIG. 11A) and is vertical in the Y direction. It has a width equal to or less than the width of the road 34 in the Y direction. When cleaning the boundary block 1f, a cleaning tool (for example, a scoop, a suction machine, etc.) can be inserted through the vertical hole 6 to clean the headrace 3 and the drainage channel 2. As a result, cleaning can be performed without removing a part of the boundary block 1f, so that the burden on the cleaning work can be reduced. The vertical hole 6 may be closed by attaching the lid 61 to the upper part of the boundary block 1f except when cleaning. FIG. 11C is a perspective view of the boundary block 1f to which the lid 61 is attached. FIG. 11D is a cross-sectional view of the boundary block 1f to which the lid 61 is attached. The lid 61 can prevent the belongings of a passerby from falling from the vertical hole 6 into the drainage channel 2.

[8th Embodiment]
FIG. 12 is a perspective view of the boundary block 1g according to the eighth embodiment as viewed from diagonally above. The boundary block 1g is different from the boundary block 1 according to the first embodiment in that a reflecting portion 7 is provided on a part of the inner surface of the headrace 3, and is common to other points. The reflective portion 7 is, for example, a reflective tape or a reflector, and has a safety measure function of notifying a passerby of the roadway of the position of the curb portion 11 by reflecting the light of an automobile or a bicycle. The reflecting portion 7 is provided on, for example, the inner surface of the headrace 3 located near the inlets 31 on the first side and the second side in the X direction. Since the reflection portion 7 is provided on the inner surface of the headrace 3, it is possible to prevent the reflection portion 7 from being contaminated by dust or the like. Therefore, it is possible to lengthen the interval for inspections such as cleaning of the reflective portion 7, and it is possible to reduce the management burden of the boundary block 1 g while taking safety measures for passersby.

In addition, instead of the reflection unit 7, a light emitting unit that emits light by itself may be provided. The light emitting unit is, for example, an LED (light emitting diode) equipped with a fluorescent plate, a phosphorescent plate, or a solar panel. By providing the light emitting portion, it is possible to inform the passerby of the position of the curb portion 11 while suppressing the contamination.

[9th Embodiment]
FIG. 13 is an explanatory diagram showing a boundary block 1h according to a ninth embodiment. FIG. 13A is a perspective view showing the boundary block 1h viewed from diagonally above. FIG. 13B is a cross-sectional view of the boundary block 1h. The boundary block 1h is different from the boundary block 1 according to the first embodiment in that the illumination unit 8 is provided, and other points are common. The lighting unit 8 has a plurality of LEDs 81 provided on a part of the inner surface of the headrace 3, and a horizontal hole 82 provided with wiring for supplying electric power to the LED 81. The plurality of LEDs 81 have a function as a safety measure for notifying a passerby of the position of the curb portion 11, and also a function as a road lighting for illuminating the road surface R1 of the roadway. The LED 81 is provided in the boundary block 1h by fitting a plate-shaped member on which a plurality of LED 81s are mounted into a portion in which the facing surface 332 near the inlet 31 is recessed upward. The lateral hole 82 is a through hole provided inside the curb portion 11 and penetrating the curb portion 11 in the X direction. The horizontal hole 82 is provided independently of the drainage channel 2 and the headrace channel 3. That is, the water flowing through the drainage channel 2 and the headrace channel 3 does not enter the lateral hole 82.

Since the LED 81 is provided on the inner surface of the headrace 3, it can be prevented from being contaminated by dust or the like. Further, since the wiring for the LED 81 is provided inside the horizontal hole 82, it is possible to prevent the wiring from being contaminated by dust or the like. Therefore, it is possible to lengthen the interval for inspections such as cleaning of the lighting unit 8, and it is possible to reduce the management burden of the boundary block 1h while obtaining the safety measures for passersby and the function as road lighting.

[10th Embodiment]
FIG. 14 is a perspective view of the boundary block 1i according to the tenth embodiment as viewed from diagonally above. The boundary block 1i is different from the boundary block 1 according to the first embodiment in that a plurality of headraces 3c are provided and has a drainage channel 2a, and other points are common. In the present embodiment, two headraces 3c are provided in one boundary block 1i, but the number may be three or more. In this embodiment, the plurality of headraces 3c each have a separate inlet 31. However, the outlets 32 of the plurality of headraces 3c are common. That is, the plurality of headraces 3c merge with each other in the horizontal passage 33 or the vertical passage 34. The plurality of headraces 3c may have different outlets 32. That is, the plurality of headraces 3c may be configured to be independently connected to the drainage channels 2a without merging with each other. The drainage channel 2a has the same configuration as the drainage channel 2a according to the third embodiment.

[11th Embodiment]
FIG. 15 is a perspective view of the boundary block 1j according to the eleventh embodiment, looking down from diagonally above. The boundary block 1j is different from the boundary block 1 according to the first embodiment in that a plurality of headraces 3d are provided, and other points are common. The inlet 31 of the headrace 3d is provided on the side surface of the curb portion 11 on the roadway side, including the end of the curb portion 11 on the first side or the second side in the X direction.

[Modification example]
In addition to the above embodiments, the present invention can be modified in various ways. For example, the cross-sectional shape of the drainage channel 2 is circular in the first embodiment, but may be elliptical or polygonal (for example, rectangular). The shape of the inlet 31 of the headrace 3 is rectangular in the first embodiment, but may be circular.

Further, the boundary block 1 is not limited to the one installed at the boundary between the sidewalk and the roadway. For example, the boundary block 1 may be installed at the boundary between the road (roadway or sidewalk) and the parking lot, the boundary between the road (roadway or sidewalk) and the planting, or the like. That is, the boundary block 1 is provided at the boundary of the road and separates the first side in the Y direction (for example, the roadway side) and the second side in the Y direction (for example, a sidewalk, a parking lot or planting). Just do it.

Further, the boundary block 1 is not limited to a linear one, but may be a curved one installed at an intersection or the like, a curb portion 11 formed low for the entry of a vehicle or the like, or the like.

1,1a, 1b, 1c, 1d, 1da, 1e, 1f, 1g, 1h, 1i, 1j Boundary block 11 Curb part 12 Foundation part 121 Apron surface 2,2a Drainage channel 3,3a, 3c, 3d Headrace 31 entrance 32 Exit 33, 33a Horizontal road 331 Bottom surface 332 Facing surface 333 Recessed surface 333a Surface 333b Step surface 34, 34a Vertical road 341, 341a Vertical surface 342, 342a Vertical surface 4, 4a Sidewalk side headrace 41 Entrance 42 Exit 5 Tool 52 Rod-shaped member 53 Hooking part 531 Curved surface 532 Bottom surface 54 Locking part 6 Vertical hole 61 Lid 7 Reflecting part 8 Lighting part 81 LED
82 Side hole R1 Road surface R2 Road surface E1 (at entrance 31) Lower end E2 (at entrance 31) Upper end E3, E4, E5 End E6 (at entrance 41) Lower end C1 (drainage channel 2) Center C2 (drainage channel 2a) Center of gravity VP1, VP2, VP3 Virtual surface L1, L2 Distance VL1, VL2 Virtual line Ar1, Ar2, Ar3, Ar4 Cross-sectional area Gr1 Gradient

Claims (6)

It is a boundary block provided at the boundary of the road and separates the first side and the second side.
The curb portion located above the road surface on the first side and
A foundation that is integrated with the lower end of the curb
A drainage channel formed inside the foundation and extending in the longitudinal direction of the road,
It has an inlet located on the first side side surface of the curb portion and an outlet located on the upper part of the drainage channel, and guides water on the road surface on the first side to be guided from the inlet to the outlet. Waterways and
With
The lower end of the entrance is located on the same surface as the road surface on the first side.
The headrace
A bottom surface extending from the lower end of the entrance to the second side and located on the same surface as the road surface on the first side.
A facing surface extending from the upper end of the inlet to the second side and having a part of the first side facing the bottom surface.
Have,
A part of the bottom surface is a boundary block located on the second side of a virtual surface connecting the center of the drainage channel in the vertical direction and the road crossing direction with the upper end of the entrance. The first distance from the lower end of the entrance to the second end of the bottom surface is longer than the second distance from the lower end of the entrance to the upper end of the entrance.
The boundary block according to claim 1. The headrace
A horizontal road formed by the bottom surface and an inner surface including the facing surface and extending from the entrance in the road longitudinal direction, and
A vertical path provided inside the foundation and formed by an inner surface including a vertical plane extending in the vertical direction.
Have,
The boundary block according to claim 1 or 2, wherein the vertical path is connected to the horizontal path on the upper side and to the upper part of the drainage channel on the lower side. The facing surface has a recess recessed upward in a portion located above the vertical path.
The boundary block according to claim 3. The foundation portion has an apron surface that is wider than the curb portion on the first side and is located on the same surface as the road surface on the first side.
The bottom surface is connected to the apron surface on the first side.
The boundary block according to any one of claims 1 to 4. A hanger for suspending the boundary block according to any one of claims 1 to 5.
The boundary block is further provided with a hanging hole formed inside the curb portion and penetrating from the upper surface of the curb portion to the facing surface.
The suspension hole and the headrace form a linear gangway through the upper part of the drainage channel and the upper surface of the curb portion.
The hanging tool has a hooking portion that is hooked on the inner peripheral surface on the upper side of the drainage channel.
A hanging tool that suspends the boundary block when the hooking portion inserted into the drainage channel through the suspension hole and the headrace is in contact with the inner peripheral surface.

Images