JPS6011931Y2 - Road studs for snowy areas - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a road stud for installation in snowy areas whose marking portion can be stored within the surface of a paved road.

Road studs used to mark route boundaries, etc. on roads generally have a marking part that protrudes above the surface of the paved road, and a reflector is provided around the protruding part, and the retroreflected light of this reflector allows the studs to be spotted from a distance. This is so that the whereabouts of the person can be determined.

However, in snowy areas, road studs cannot be provided with the above-mentioned protrusions because they become an obstacle to snow removal during the snowy season (hereinafter referred to as the winter season).

For this reason, the markings have traditionally been made to protrude above the pavement surface during the period when there is no snowfall (hereinafter referred to as the summer period), and during the winter months 2 to 4
In Kegetsu, the method used is to lower the markings below the pavement surface and eliminate the markings.

In general, this method mechanically holds the same chain in a position that protrudes above the pavement surface or stores it under the pavement surface, so it is not necessary to replace the chain depending on the season and is reasonable. It is.

There are various ways to hold the chain in the upper and lower positions with respect to the pedestal buried in the pavement, but the most common method is to use a chain with a cylindrical or square shape on the inside. A cylindrical or rectangular chain body is fitted and stored in the hollow part inside the pedestal, and in summer the chain body is placed on the upper support part inside the pedestal to hold the sign part protruding above the pavement surface, and in winter At the position where the chain body is rotated 90' with respect to the pedestal, the chain body is fitted and held inside the pedestal at a height where the top surface of the chain body matches the top surface of the pavement, and in both summer and winter. too,
The chain is firmly fixed to the pedestal with bolts or the like to prevent it from floating due to tire shock or vibration.

However, this method has the following drawbacks.

In other words, ■ In summer conditions, the upper position support part inside the pedestal cannot support the entire circumference of the bottom of the chain.
The support of the chain body is unstable for tires of heavy vehicles.

■ Particularly in summer conditions, the horizontal rotational force applied by the tires to the marking part, that is, the protruding part of the chain body, must be entirely transmitted to the pavement via the pedestal, so the chain body and the pedestal, and the pedestal and surrounding Mechanical strain is likely to occur between the concrete and the paving material, and furthermore, there is a risk that the bolts used to prevent floating may loosen due to this rotational force.

◎ It is difficult to prevent dust between the pedestal and the chain.

■ The structure of both the pedestal and the chain becomes complex.

This is a drawback.

This project solves the above problems, and has a hollow pedestal that is buried in the pavement with its top surface aligned with the top surface of the pavement, and a marking part that protrudes from the - side, which is flipped upside down and held in the pedestal. It consists of a cylindrical chain body that can be attached to the base, and a lid that closes the upper opening of the chain body while the chain body is fitted and held in the base. On the inner periphery of the pedestal is formed an anti-floating plate which is seated on one side or the other side with the protruding display part, and which is held horizontally across the chain body in connection with the operation of screwing the lid onto the chain body. The marking part is engaged in an annular anti-float groove, and is characterized in that the engagement position of the two chains can be used in either forward or reverse to make the marking part appear on the road surface or be stored under the road surface. That is.

An embodiment of the present invention will be described below with reference to the drawings.

Figures 1 and 2 show how chains are installed during the summer.

In the figure, a pedestal 1 is buried in alignment with the upper surface of a pavement R, and a chain body 2 is fitted and stored in a hollow space inside the pedestal 1.

The pedestal 1 has a hollow shape with a tapered outer surface to prevent floating, and a support edge 3 that supports the chain body 2 is provided on the inner circumferential surface of the pedestal 1 so as to protrude in an annular shape. A floating prevention groove 4 which is annularly opened and extends over the entire inner periphery of the intermediate portion is formed in the intermediate portion.

On the other hand, the chain body 2 is a cylindrical or square tubular body, and has a fitting part 5 having the same height as the height from the support edge 3 to the upper edge of the pedestal 1,
It consists of a marking part 6 having a smaller diameter than the outer diameter of the fitting part 5, which is formed protrudingly on one surface of the fitting part 5, and both end surfaces of the fitting part 5 are connected to the chain body 2.
seat surface 7 which is flipped upside down and seated on the support edge 3 of the pedestal 1
It is at7b.

In the summer state shown in FIG.
The marking part 6 is located at the upper part of the chain body 2 and protrudes above the upper surface of the pedestal 1, that is, the upper surface of the pavement R, to achieve the purpose of marking. A body 8 is attached.

The height of the fitting part 5 of the chain body 2 is made to match the height from the support edge 3 to the upper edge of the pedestal 1, and the chain body 2 is located at the center of the height.
There are four square holes 9, 9 horizontally penetrating the body through the center of the chain body 2, two symmetrically with respect to the central axis of the chain body 2, or two square holes perpendicular thereto (in the embodiment, there are two square holes 9, 9). (indicates the case) provided.

Reference numeral 10 denotes a floating prevention plate inserted into each square hole 9 so as to be slidable in the horizontal direction.

The total length of the floating prevention plate 10 is slightly longer than the length of the square hole 9, and when it is pushed outward from the center of the chain body 2, its end 10' protrudes outward from the outer peripheral side of the chain body 2, and the pedestal 1
The chain body 2 is fitted into the anti-float groove 4 provided on the entire inner wall surface of the chain body 2 to prevent the chain body 2 from floating, and when the chain body 2 is pulled inward, the end portion 10' is hidden inside the chain body 2. The chain body 2 can now be removed.

The chain body 2 is further provided with screw holes 11a and 11b having the same diameter extending from the upper and lower surfaces thereof to a certain depth within the hollow portion.

The screw hole 11a located at the top of the chain body 2 is
Close the lid with 2.

The lid 12 has a flange 13 on its upper periphery, so that when the lid 12 is fully screwed into the chain, the top surface of the flange 13 matches the top surface of the chain 2 or is slightly lower.

Further, from the center of the lower part of the lid 12, an operating shaft 15 having a conical portion 14 at the lower end projects as an operating section of the floating prevention plate 10.

After fitting and storing the chain body 2 in the pedestal 1 with the display part 6 facing upward, when the lid 12 is screwed into the upper screw hole 11a, the operating shaft 15 is lowered, so that the floating prevention plate 10 is moved to the conical part 14. The chain body 2 is pushed outward through the rectangular hole 9 under increased pressure, and the end portion 10' is ultimately held in the floating prevention groove 4 to prevent the chain body 2 from floating. .

When removing the chain body 2 from the base 1, first remove the lid 12 from the chain body 2.
After removing it, pull the floating prevention plate 10 toward the center of the chain body.

Note that there is an oval-shaped hole 16 near the center of the floating prevention plate 10.
is provided, and unnecessary horizontal sliding strokes are limited by bolts 17 screwed in from the bottom of the chain body.

Further, an operation hole 18 is provided on the inner end side of the floating prevention plate 10, so that even when the floating prevention plate 10 becomes difficult to slide in the horizontal direction, it can be easily pulled to the center using a tool.

Furthermore, a groove 19 for screwing is provided on the top surface of the lid 12.

In order to prevent sand and dust from entering the gap between the pedestal 1 and the chain body 2 over a long period of time, use rubber gaskets or O2 as shown in the figure.
3 and 4, in which it is desirable to provide the ring 20, show how it is installed in winter.

The burial of pedestal 1 is the same regardless of whether it is winter or summer, but
The chain body 2 is turned over, contrary to the case in summer, and fitted and stored in the base 1, and the seat surface 7b is seated on the support edge 3.

At this time, remove the lid 12 from the chain body 2 and remove the screw hole 1 of the chain body 2 from the opposite side in the summer, that is, the top surface in the winter.
Screw into 1b.

The anti-floating condition is also exactly the same as in the summer.

In this state, the marking part 6 is stored in the inner lower hollow part of the pedestal 1, and the upper surface of the chain body 2 and the upper surface of M12 coincide with the upper surface of the pedestal 1, that is, the upper surface of the pavement R.

The packing 20 is also provided in the fitting gap between the base 1 and the chain body 2, as in the summer.

Particularly in winter, the freeze expansion force absorbing material 21 is housed in the space between the inside of the pedestal 1 and the chain body 2.

This absorbent material 21 absorbs the force that pushes the chain body 2 upwards due to its expansion force when the space between the inside of the pedestal 1 and the chain body 2 is filled with rainwater etc. and freezes in winter. It is made of a ring made of a non-water-absorbing and highly elastic material, such as polyurethane.

This absorbent material 21 can be left in the lower part of the inside of the pedestal 1 even in the summer without any problem.

As the main materials of the road stud according to the present invention, the base 1 and the chain body 2 are preferably made of cast aluminum, and the floating prevention plate 10 and the bolt 17 are preferably made of stainless steel.

As described above, according to the present invention, the method of supporting the chain body and preventing floating is perfect in both summer and winter conditions, and when a cylindrical body is used for the chain body, the horizontal direction applied to the protruding part of the chain body is perfect. The rotational force is not strongly transmitted to the pedestal.

In addition, the dustproof method between the pedestal and the chain body is simple, and the structure of the pedestal and chain body is simple, making it extremely easy to handle when switching from winter to summer or from summer to winter. This has the effect of eliminating the drawbacks of road studs.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a partially sectional side view showing the installed state in summer, Fig. 2 is a partially sectional plan view of the same, and Fig. 3 is a partially sectional side view showing the installed state in winter. The cross-sectional side view and FIG. 4 are the same partial cross-sectional plan views. 1...Pedestal, 2...Chain, 3...
・・Support edge, 4・・Floating prevention groove, 5・・・・
...Fitting part, 6...Indication part, 7a, 7b...
...Seating surface, bottom...Reflector, 9...Square hole, 10...Floating prevention plate, lla, llb...
...Screw hole, 12...Lid, 13...
- Tsuba, 14...Conical part, 15...Operation shaft.

Claims (1)

[Scope of utility model registration request] A hollow pedestal is buried in the paved road with its top surface aligned with the top surface of the paved road, a cylindrical chain body is fitted and held upside down inside the pedestal, and the chain body is fitted and held in the pedestal. It consists of a lid that closes the top opening, and on the top and bottom of the inner peripheral surface of the pedestal,
A ring-shaped opening prevention groove for the chain body and an annular support edge supporting the lower surface of the chain body are provided, and a fitting part for fitting the chain body into the pedestal, and one part having a smaller diameter than the fitting part. The indicator part has a reflector formed protruding from the end face, and both end faces of the fitting part serve as seating surfaces for flipping the chain body upside down and seating it on the support edge of the pedestal, and the central part of the fitting part There are at least two square holes that penetrate horizontally through the body and open on the inner and outer surfaces, and an anti-float plate is slidably inserted into each square hole. A screw hole is provided, and the lid screwed into the screw hole contacts one end of the anti-levitation plate that protrudes from the inner surface of the chain body, and by pushing it out along the square hole, the other end prevents the pedestal from floating. A road stud for snow-covered areas, characterized in that it is equipped with an operation part that engages with a prevention structure.