JPH10168844A - Marker pole having anisotropic rigidity - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the advance of a vehicle to a footpath, minimize the impact to a walker even in the erroneous collision, and ensure the safety of the walker by containing a plurality of flexible direction plates of highly strong, highly elastic materials opposed to a cylindrical cushioning rubber of rubber elastic material closed in the upper end with the axial line between. SOLUTION: A cushioning rubber 2 forming the outer surface of a marker pole 1 has a cylindrical form closed in the upper end, the upper end area of a support body 5 formed of a steel pipe whose lower part is inserted into the ground is inserted to the inner part of the rubber 2, and spring steel-made direction plates 3a, 3b are arranged so that the broader side surfaces are opposed to each other with the axial center of the cushioning rubber 2 in between. Their lower ends 4 are further welded to the upper end of the support body 5, and the reverse side is adhered to the inner surface of the cushioning rubber 2. An arrow 6 showing that the bending rigidity is maximum is provided in the vicinity upper part of the point crossing the lateral extensions of the direction plates 3a, 3b of the cushioning rubber outer surface as means for judging the setting direction in planting, and a marker pole is planted in the boundary between a footpath and a roadway with the side having the higher rigidity being turned in the advancing direction of vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is implanted along the boundary between a sidewalk and a road, explicitly prohibits vehicles from entering the sidewalk, and prevents vehicles from entering the sidewalk to prevent traffic from entering the sidewalk. About signpost to secure safety.

[0002]

2. Description of the Related Art In order to prevent a vehicle from entering a sidewalk beside a general road and threatening the safety of pedestrians, or to stop and stop on a sidewalk to disturb walking, a vehicle must be located at the boundary between the sidewalk and the road. Various signposts are planted along. Many of these signposts are made of elastic material, have a structure that bends even if a pedestrian hits by mistake, softens the impact, and does not cause injury, and has a structure described in Japanese Utility Model Publication No. 7-47449. ,
Alternatively, the structure shown in FIG. 6 has been widely used. FIG.
The marker pillar shown in FIG. 1 is erected on the ground by inserting a coil spring projecting part into a tubular rigid support member 5 in which an elastic body cylinder 2 having a coil spring 9 built into the axis so that one end projects is vertically embedded in a road, When a pedestrian is hit by mistake, the pedestrian is bent as shown by a two-dot chain line to reduce the impact of the collision, and has a structure capable of restoring the original shape when leaving. Conventional signposts have no directionality in bending stiffness, and the magnitude of the stiffness is made to bend when a pedestrian hits, and when the vehicle accidentally enters the sidewalk, the entry of the vehicle is not blocked, It was not enough to ensure pedestrian safety. Further, depending on the installation location, the vehicle may be bent by contact with the vehicle due to malfunction of the re-re-driving operation, or may be intentionally pushed and bent to enter the sidewalk and park and stop.

[0003]

SUMMARY OF THE INVENTION The present invention is directed to planting along a boundary between a sidewalk and a road to explicitly prohibit vehicles from entering the sidewalk, and to provide a collision if a pedestrian is hit by mistake. It is an object of the present invention to provide a high-strength signpost that increases the impact of a vehicle trying to get on a sidewalk and prevents entry to the vehicle, thereby ensuring the safety of pedestrians.

[0004]

According to the present invention, a part of a support is inserted into a lower portion of a cushion rubber made of a rubber-like elastic body having a closed cylindrical shape at an upper end. In a signpost that is implanted through the support and clearly indicates that the vehicle is prohibited from entering the sidewalk, an extension of the support is attached to the upper end of the support 5 that is partially inserted into the lower region inside the cushion rubber 2. This is a sign pillar having anisotropic rigidity, in which two flexible direction plates 3 which extend in the direction and face each other across the axis of the support are fixed.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The sectional shape of the sign post of the present invention is not particularly limited, but a circular shape is preferable, and the cushioning rubber is a rubber-like elastic material such as a natural rubber, a synthetic rubber, a urethane elastomer, and an ethylene-vinyl acetate copolymer. EPDM which is formed in a body and has excellent weather resistance among them is preferable. The direction plate is formed of a flexible material such as a metal or a synthetic resin having a high elastic limit. Among them, spring steel having high elasticity limit, strength and high Young's modulus is preferable.

[0006] The sign post of the present invention has a structure in which two flexible direction plates facing each other with an axis interposed therebetween are provided in a buffer rubber. In general, the bending stiffness of a cantilever is proportional to the cube of the thickness. Therefore, the width of the direction plate (hereinafter, the width of the side of the direction plate is referred to as the width, and the width of the side is referred to as the thickness). The flexural rigidity is greater than the thickness direction, and the signpost reinforced by incorporating the direction plate has a flexural rigidity in the width direction of the direction plate as shown in FIG. 2, which shows the cross section of the signpost shown in FIG. On the other hand, it becomes maximum in the parallel direction XX ′,
It becomes extremely small at Y ′ and has anisotropy in rigidity. At the time of use, it is installed so that the direction side with large bending rigidity, in other words, the width direction side of the direction plate is almost perpendicular to the road,
The side with less rigidity is parallel to the direction of travel of the pedestrian,
The side with the higher rigidity is parallel to the approach direction of the vehicle. By setting the installation direction in this way, even if a pedestrian accidentally hits the signpost, the signpost is bent and deformed with a small force as shown by a two-dot chain line in FIG. No injuries or even minor bruises. On the other hand, when a vehicle collides to enter the sidewalk, it requires a lot of force to push down and go further,
The vehicle is less likely to travel further, ensuring pedestrian safety. At the same time, since the cushioning rubber is reinforced with the direction plate, the vehicle is less likely to be damaged even if it collides.

The thickness, length, width, cross-sectional shape, and position of the direction plate are not particularly limited, and the size and rigidity of the cushioning rubber, the location of the signpost, and the like are taken into consideration. Arbitrarily determined. For example, if the thickness is increased, the strength can be increased, and if the length is increased, the bending resistance can be increased, so that the thickness, length, width, cross-sectional shape, The position is determined. Further, the arrangement of the two direction plates may be either opposing the wide side as shown in FIG. 2 or opposing the narrow side as shown in FIG.

When the signpost is planted, the direction in which the rigidity is maximized is installed at right angles to the road, so that means for determining the installation direction are provided as necessary. As means for determining the installation direction, on the outer surface of the direction indicating the maximum or minimum bending rigidity of the signpost or on the top of the cushion rubber,
A method of projecting or recessing a symbol such as an arrow or a front, a back, or a letter such as F, a method of abutting these symbols and a cut-out template to spray paint or print ink. Alternatively, a method of attaching a label on which these symbols and characters are printed is used. In addition, the cross section of the signpost may be made non-circular, for example, elliptical, so that the installation direction can be determined.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a partially cutaway front view showing a state where one embodiment of the present invention is implanted. The cushioning rubber 2 forming the outer surface of the sign post 1 is made of an EPDM composition, has a cylindrical shape with a closed upper end, and is coated on the surface. Inside it, the upper end area of a support 5 made of a steel pipe whose lower part is inserted into the ground is inserted, and on its extension, two direction plates 3a, 3b made of spring steel, each having a wide width. The lower side 4 is welded to the upper end of the support 5, and the back side is adhered to the inner surface of the buffer rubber 2, and is built in. Direction plates 3a, 3 on the outer surface of the cushioning rubber
An arrow 6 indicating that the bending stiffness is maximal is provided as a means for determining the installation direction at the time of planting in the upper portion near the point of intersection with the widthwise extension line of b.

FIGS. 3, 4 and 5 are cross-sectional views each showing a cut surface of another embodiment. FIG. 3 shows two direction plates 3a and 3b made of spring steel having a lower end 4 extending to the lower end of the cushion rubber 2 inside a cushion rubber 2 formed by molding an EPDM composition into a cylindrical shape having a closed upper end. It is arranged so that the side with the wider side faces the opposite side, and the back side is adhered to the cushioning rubber 2,
An embodiment in which the lower end 4 is welded to a support 5 made of a steel pipe is shown.

FIG. 4 shows two pieces of spring steel made of a spring steel above a cylindrical rubber cushion 2 made of EPDM and having a closed upper end, leaving a space in which a support 5 is inserted later. The direction plates 3a and 3b are arranged in a non-adhesive manner with the cushioning rubber 2 so that the wider side surfaces thereof face each other, and the cushioning rubber 2 is fitted into the existing support 5 which has been planted. An embodiment in which a bolt 7 is penetrated through a support 5 and fastened with a nut 8, and a cushion rubber 2 is detachably fixed to an existing support 5 is shown.

FIG. 5 shows that the upper end region of the support 5 is inserted into a cushion rubber 2 formed by molding an EPDM composition into a cylindrical shape having a closed upper end. The two substantially rectangular direction plates 3a and 3b are arranged so that the narrower sides face each other across the axis of the cushion rubber 2, the lower end 4 is welded to the support 5, and the back surface is formed of the cushion rubber 2 An example is shown in FIG.

[0013]

As described above, the signpost is made of a high-strength, high-elasticity material which is opposed to a cylindrical cushioning rubber whose upper end is closed and which is made of a material having rubber-like elasticity with an axis interposed therebetween.
By having a configuration incorporating a flexible direction plate, anisotropy is imparted to the bending rigidity of the signpost, and the higher rigidity is implanted in the direction of entry of the vehicle,
The vehicle is prevented from approaching the sidewalk, and even if a pedestrian accidentally hits, the impact is small, so there is no injury and safety is ensured. Further, since the cushioning rubber is reinforced by the direction plate, the vehicle is less likely to be damaged even if the vehicle collides.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a use state of an embodiment of a signpost of the present invention.

FIG. 2 is a cross-sectional view illustrating a cross section taken along line AA ′ of the sign post of the present invention shown in FIG.

FIG. 3 is a sectional view showing a cut surface of another embodiment of the sign post of the present invention.

FIG. 4 is a sectional view showing a cut surface of another embodiment of the sign post of the present invention.

FIG. 5 is a sectional view showing a cut surface of another embodiment of the sign post of the present invention.

FIG. 6 is a cross-sectional view illustrating a cut surface of a conventional signpost.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sign post 2 cushion rubber 3 directional plate 4 lower end of directional plate 5 support 6 arrow as installation direction discriminating means 7 bolt 8 nut 9 coil spring

Claims (2)

[Claims] 1. A part of a support is inserted into a lower portion of a cushion rubber made of a rubber-like elastic body having a closed cylindrical shape at an upper end,
Implanted through supports along the sidewalk and roadway boundaries,
In the signpost clearly indicating that the vehicle is prohibited from entering the sidewalk, the support extends in the extension direction of the support to the upper end area of the support 5 partially inserted into the lower area inside the cushioning rubber 2, and the axis of the support is A sign post having anisotropic rigidity, wherein two flexible direction plates 3 opposed to each other are fixed. 2. A sign having anisotropic stiffness according to claim 1, further comprising means for differentiating the bending stiffness depending on the bending direction, and comprising means for determining an installation direction at the time of planting determined by the direction in which the bending stiffness indicates a maximum or a minimum. Pillar.