JP2841179B2 - Revetment footrest - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revetment foot having a foot portion and side portions located on both sides thereof, wherein the foot portion and the side portion are formed of a cored bar and a synthetic resin covering the core bar. It relates to a hanging tool.

[0002]

2. Description of the Related Art Conventionally, a footrest and a side part located on both sides thereof have been conventionally used, and the footstep and the side part are formed of a cored bar and a synthetic resin covering the cored bar. Fairness 4-40
As shown in Japanese Patent Publication No. 40, a reflector is provided near both ends of a foot portion, and a hook-shaped leg is extended from each side having a circular cross section,
Some hook-shaped legs are inserted into holes for fixing footrests formed in a wall to fix the footrests.

When the above-mentioned footrest is installed on a revetment, for example, as shown in FIG. 5, a plurality of footrests 24, 2 from a water bottom 22 to a wall top 23 are provided on a concrete revetment wall 21.
Are arranged in a line in the vertical direction. Further, as shown in the figure, there are cases where the footrests 24 are arranged on both banks.

[0004]

By the way, when the footrests 24, 24,... Are arranged in a line in the vertical direction on the revetment wall 21, the footrests 24 in the water may be displaced when the flow of water is fast. It may be deformed by receiving a fluid pressure. Further, when the footrests 24 are arranged in both banks, it is economical and convenient if the same footrests 24 can be applied to both sides.

[0005] Further, when the footrest 24 is used at night or the like, there is a possibility that the location of the footrest 24 is unclear, and there is a risk of stepping off the foot.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to improve a cross-sectional shape of a side portion which receives water flow directly. By forming the footrest device reversibly, it is possible to provide an economical and convenient revetment footrest device which can be used as a revetment footrest for a river or the like having a fast flowing water. Is what you do.

[0007]

In order to achieve the above object, a revetment footholding tool according to the present invention has a cross-sectional shape of each side having a semicircular shape on the upstream side and a protruding streamline shape on the downstream side. Are formed and connected to each other by forming protrusions projecting vertically.

[0008] Further, legs are constituted by cores extending from both sides and not covered with synthetic resin, and the tips of the legs are bent outward from the respective side portions, and the foot portions are formed. It is characterized by being formed in the same shape on both sides.

[0009] Further, the invention is characterized in that reflectors are provided on the upper and lower surfaces near both ends of the foot portion.

[0010]

1 to 4 relate to an embodiment of the present invention. FIG. 1 is a plan view of a footrest, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. FIG.

In FIG. 1, reference numeral 1 denotes the entire footrest. The footrest 1 is composed of a foot part 2 and side parts 3 and 3 located on both sides thereof. The side portions 3 are formed by coating a synthetic resin 5 such as polypropylene on a core 4 made of iron having a substantially U-shape in plan view.

As shown in detail in FIG. 4, the cross-sectional shape of each of the side portions 3 is such that the upstream side is formed into a semicircular shape 6, the downstream side is projected into a streamline shape 7, and the both 6, 7 are The boundary is connected via a semicircular projection 8 projecting up and down.

A non-slip pattern 9 is formed on almost the entire surface of the foot portion 2, reflection plates 10 are provided at both ends, 11 is a grip portion, and 12 is a footrest. It is a leg for fixing 1 to the revetment wall 13.

When the footrests 1 having the above-described configuration are arranged in a row in the vertical direction on the revetment wall 13, the cross-sectional shape of each of the side portions 3 of the footrests 1 is a semicircular shape 6. On the riverside,
If the cross-sectional shape of the side part 3 of the footrest 1 underwater is semicircular 6, the cross-sectional shape of the side part 3 of the footrest 1 is protruded toward the downstream side. However, the water flow toward the side portion 3 is deflected up and down near the side portion 3, passes over the protrusion 8, and is sucked into the streamline shape 7 protruding downstream of the protrusion 8. Then, a vortex is formed on the downstream side of the protruding portion 8 and becomes a reaction force, and as a result, deformation of the footrest 1 due to the water flow is prevented.

The legs 12, 12 are constituted by cores extending from the side portions 3, 3 and not covered with a synthetic resin, and the distal ends of the legs 12 are located outside the respective side portions 3. When the anti-slip pattern 9 and the grip portion 11 of the foot portion 2 are formed in the same shape on the front and back, the side portion 3 also has the same shape on the front and back, so that the entire footwear 1 is formed. It becomes reversible, and when the footrests 1 are arranged on the opposite shore, the same shape of the footrests 1 is used. If it arrange | positions, the semicircular shape 6 will be on the upstream side, and the one which protruded in the streamline shape 7 will be on the downstream side. In this case, since the tip of the leg 12 is bent outside the respective side 3, Fixed AshiKakegu 1 becomes more reliable.

When the reflectors 10 are provided on the upper and lower surfaces near both ends of the foot portion 2, when the footrest 1 is used to raise and lower the revetment wall 13 at night or the like, each foot is required. The location of the hanging tool 1 becomes clear, and the possibility of stepping off the foot from the foot hanging tool 1 is reduced.

[0017]

According to the revetment footholding device of the present invention, the cross-sectional shape of each side is a semicircular shape on the upstream side and a protruding streamline shape on the downstream side. Since the flow pressure due to the water flow received by the side of the footwear in the water is relieved by the vortex downstream of the upper and lower protrusions, the deformation of the footwear due to the rapid water flow It becomes a revetment footrest that can be prevented and can withstand long-term use.

Further, the legs are constituted by cores extending from both sides and not covered with the synthetic resin, and the ends of the legs are bent outward from the respective side portions, and the foot steps are formed. When the front and back are formed in the same shape, the footrest can be installed in a desired state on both banks with one kind of footrest, and at that time,
Since the tip portions of the leg portions are bent outward from the respective side portions, the fixing of the footrest device to the revetment wall can be more reliably performed, and the production cost is economical and a convenient revetment footrest device. Become.

Further, in the case where reflectors are provided on the upper and lower surfaces near both ends of the stepping portion, when the climbing wall is lifted and lowered by using the stepping device, a shore protection footrest device which is less likely to be stepped off is provided. Become.

[Brief description of the drawings]

FIG. 1 is a plan view of a revetment footrest according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view thereof.

FIG. 4 is a sectional view taken along the line AA of FIG. 1;

FIG. 5 is an explanatory diagram in which footrests are installed on a revetment wall.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 footwear 2 footstep 3 side 4 core metal 5 synthetic resin 6 semicircular part on the upstream side 7 protruding streamline shape part on the downstream side 8 protruding part at boundary 10 reflector 12 leg

Claims (3)

(57) [Claims] 1. A revetment footholding tool having a foot step and side parts located on both sides thereof, wherein the foot step and the side part are formed of a cored bar and a synthetic resin covering the core bar. A foot protection tool for revetment, characterized in that the cross-sectional shape of the part is a semicircular shape on the upper side of the river, a protruding streamline shape on the lower side, and a projection part projecting up and down at the boundary between the two is connected. 2. A leg portion is constituted by a core bar extending from the both side portions and not covered with a synthetic resin, and a tip portion of the leg portion is bent outward from each side portion, and a foot step portion. 2. The revetment footholding tool according to claim 1, wherein the front and back surfaces are formed in the same shape. 3. The revetment footholding device according to claim 1, wherein reflection plates are provided on upper and lower surfaces near both ends of the step portion.