JP2002081023A - Road marker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road marker which is easily adaptable to various kinds of height, and capable of firmly joining each component thereof without using any tightening means such as screws and rivets. SOLUTION: This road marker comprises a body part 1 and a base part 2. A pole part is a simple hollow columnar body, and the base part 2 is a common member, and the road marker of various kinds of height can be formed only by changing the length of the body part 1. The body part 1 is welded to the base part 2 without providing any joining part on a tip 11 of the body part, and welded parts are less easily conspicuous in the appearance, and the body part and the base part can be firmly integrated with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road marking body used in a state of being fixed and arranged on a pavement road surface for the purpose of center line marking, lane guidance marking or traffic regulation guidance marking of a lane.

[0002]

2. Description of the Related Art A conventional road sign installed on a center line or the like is required to be able to withstand being stepped on a vehicle or the like at a considerable speed, to be restored, and to be able to withstand such a situation a considerable number of times. It is said. Therefore, the base material itself is flexible, and stress tends to be concentrated when trampled, and there is a tendency that a joint that causes separation is not formed as much as possible. For this reason, a method of integrally forming the main body portion including the cap portion and the base portion by injection molding or the like is often used.

[0003] However, the above-mentioned method requires various injection molding dies to meet various specifications, particularly to meet a variety of height requirements, and requires many types of stocks for stocking. The fact that a proper number of stocks is required and that stocking in a shape with poor space efficiency requires a large amount of space, which is extremely inefficient.
In order to avoid such a situation, the production is performed after receiving the order, so that the delivery time becomes long, and it is not possible to promptly respond to the request of the customer.

Therefore, in recent years, a sign for roads has been replaced with a cap,
A method has been proposed in which a pole part and a base part are separately stocked in a state of parts, and if necessary, each member is fastened and assembled with bolts, rivets, etc. so that it can correspond to various shapes and heights. ing.

[0005]

However, fastening using bolts, rivets, etc., increases the number of parts, complicates the process management, and leads to an increase in cost. At the same time, in order to secure strength, fastening is performed at several places. Is necessary, and the man-hour for fastening is not small. In addition, bolts, rivets, etc. are exposed, making the appearance unsightly, and rust is also feared at the exposed portions. Further, fastening means such as screws and rivets are usually harder than the resin member constituting the road marking body, and there is a possibility that defects such as breakage and cracks may occur from near the hole of the fastening portion when stepped on a vehicle or the like. .

Further, since the joint between the pole and the cap has a large amount of deformation when the road sign is trampled and the cap is likely to fall off from the joint, the joint is large. The parts need to be particularly strongly joined.

Accordingly, the present invention provides a road marking body which can easily cope with various heights and in which each member is firmly joined without using fastening means such as screws and rivets.

[0008]

SUMMARY OF THE INVENTION The present invention provides a main body which is a cylindrical hollow pillar having a closed upper end to form a cap portion and an open lower end, and an inner diameter of a lower end of the main body. Consisting of a base part having an insertion part with almost the same outer diameter,
The inner surface of the main body portion and the outer surface of the insertion portion of the base portion are fused and integrated.

The road marking body is separated into a main body and a base, and the main body is a cylindrical hollow pillar having an upper end closed to form a cap, and the base is a common member. It is possible to form road markings of various heights only by changing the length of the main body. Also, since the cap portion is formed integrally with the pole portion to form the main body portion, there is no danger of falling off, and since the main body portion and the base portion are fused, a strong bonding force can be obtained, and the appearance is improved. The joint is hardly noticeable.

In addition, since the main body is simply a cylindrical hollow columnar body, and the shape of the base is also limited, stocking in consideration of space efficiency becomes possible and space saving in stock can be achieved. .

In the molding of the main body according to the present invention, it is preferable that the nested parts are mounted in a mold and injection molding is performed using a mold that defines the length of the main body. By providing a partition on the inner surface of the mold, it is possible to mold a main body of multiple lengths with an integrated mold, making it possible to handle products of any height without preparing multiple molds. Become.

The method of joining the main body and the base may be by adhesion using an adhesive or the like. Since no heat is generated by the bonding method, it is preferable that the bonding force is sufficient because there is no fear of deformation due to release of molding distortion of the resin due to heat.

The fusion according to the present invention may be ultrasonic fusion or high frequency fusion. However, considering that the fusion members are cylindrical, a substantially constant fusion strength is obtained in the entire fusion portion. It is more preferable to perform rotary fusion, which is easy. The contact surface is inserted by inserting the insertion part of the base into the lower end of the main body, applying pressure from the outside of the main body, pressing one of the members and rotating one or both in the opposite direction. Frictional heat is generated, and the heat melts the resin on the contact surface, and after cooling, the resin is united and firmly joined. The fused portion is the inner surface of the main body, and the joint is hardly noticeable in appearance.

An outer peripheral wall is provided at a portion where the base portion is to be fused so as to surround the outside of the fusion portion between the insertion portion of the base portion and the main body portion, so as to conceal leakage of molten resin from the fusion portion. It is preferable to adopt a structure for improving the appearance and preventing a decrease in the strength of the fused portion. The outer peripheral wall may be provided outside the insertion portion by forming a groove into which the tip of the main body portion is fitted by integral molding with the base portion, and after the insertion portion of the base portion and the main body portion are fused. A separate cylindrical member may be provided on the outside of the fused portion by welding or the like, or a cylindrical member having a bottom may be fitted to the fused portion between the base portion and the main body portion and the anchor may be provided. When the bolt is screwed to the base anchor and fixed, the bottom of the cylindrical member may be sandwiched and fixed between the base and the road surface.

As a method of fixing the road marking body to a pavement road surface or the like, there is a method of bonding the road marking surface to the road surface with an adhesive or the like. However, it is preferable to use a method of fixing with an anchor bolt. In the present invention, since the main body is integrally molded, it is difficult to screw the main body from above at the construction site, and when forming the base, an anchor bolt is implanted in advance in the base and the main body is removed. A method of rotating, screwing and fixing to a road surface is simple, reliable and preferable.

It is preferable that a reinforcing material having an outer diameter slightly smaller than the inner diameter of the main body is provided inside the main body for the purpose of reducing the bending of the base when the main body is bent.
The reinforcing material may be formed integrally with the base portion, or may be joined to the base portion by welding or bonding before joining the main body portion.

The material of each member is not particularly limited as long as it can be molded and fused. However, in consideration of the ease of molding and the resilience to the stomping of vehicles and durability, etc., thermoplastic polyurethanes and soft polyolefins are used. , Elastomers and the like are preferred. From the viewpoint of recycling, it is preferable that the material of each member is the same. However, even if different materials are used in consideration of strength, etc., the area of the joint portion is not so large. Is small and can be easily recycled.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the entire road marking body. The upper end 11 of the main body 1 which is a cylindrical hollow columnar body is closed, and the base 2 is integrated with the lower end by rotary fusion. Anchor bolt 2 at the lower end of base 2
1 is protruded. Further, a reflective sheet 3 having a retroreflective property is attached to an outer surface on an upper portion of the main body.

FIG. 2 shows a main body constituting a road marking body. The main body 1 is injection-molded using thermoplastic polyurethane, the inside is hollow, and has a substantially constant wall thickness as a whole. The lower end is open, but the upper end 11
Is closed.

FIG. 3 shows a cross section around the base portion in one embodiment of the present invention. An anchor bolt 21 is implanted at the same time when the base 2 is formed, and the inner surface of the main body 1 is rotationally fused to the outer surface of the insertion portion 24 of the base 2. A reinforcing member 22 having an outer diameter slightly smaller than the inner diameter of the pole 1 is integrally formed with the base inside the main body 1 to reinforce the strength of the base where stress is concentrated and reduce bending. An outer peripheral wall 23 integrally formed with the base portion 2 is provided outside the fusion portion, so that the fusion portion is concealed, the appearance is improved, and an effect of preventing a decrease in bonding strength of the fusion portion is also obtained. ing.

FIG. 4 shows a cross section around the base portion in one embodiment of the present invention. The reinforcing member 22 is the base portion 2
And is joined to the base portion 2 by rotational fusion. By forming the reinforcing member 22 separately from the base portion 2, the shape of the base portion forming die is simplified,
In addition, the reinforcing member 22 can be formed by extrusion. The other parts are the same as in the embodiment shown in FIG.

FIG. 6 shows a cross section around the base portion in one embodiment of the present invention. The outer peripheral wall 23 is provided as a separate member. After the main body 1 is rotationally fused to the insertion portion of the base 2, the outer peripheral wall 23 is rotationally fused to the outer peripheral surface of the main body 1. This facilitates rotational fusion of the main body portion 1 to the insertion portion of the base portion 2 and can improve the appearance by hiding the fusion joint portion. The other parts are the same as in the embodiment shown in FIG.

FIG. 7 shows a cross section around the base portion in one embodiment of the present invention. The outer peripheral wall 23 has a bottom 25, and by providing an opening in the bottom 25 through which the anchor bolt 21 can pass, the main body 1 and the outer peripheral wall 23 can be connected to the anchor bolt 21 without joining such as fusion. Is screwed into a base anchor embedded in the road surface and is sandwiched between the base portion 2 and the road surface, whereby the main body portion 1 and the base portion 2 are integrated. The other parts are the same as in the embodiment shown in FIG.

[0025]

According to the present invention, the road sign is separated into a main body and a base, and the main body is a cylindrical hollow columnar body whose upper end is closed to form a cap, and the base is a common member. Therefore, it is possible to form road markings of various heights only by changing the length of the main body. Also, since the cap portion is formed integrally with the pole portion to form the main body portion, there is no danger of falling off, and the main body portion and the base portion are fused so that a strong joining force can be obtained,
In addition, the joint is hardly noticeable in appearance.

Further, since the main body is a simple cylindrical hollow columnar body, and the shape of the base is also limited, inventory taking into account space efficiency becomes possible, and space saving in inventory can be achieved. .

[Brief description of the drawings]

FIG. 1 shows an embodiment of a road marking body according to the present invention.

FIG. 2 shows a main body constituting the road marking body of FIG. 1;

FIG. 3 is a cross-sectional view showing an example of a periphery of a base portion constituting the road marking body of FIG. 1;

FIG. 4 is a cross-sectional view illustrating an example of a periphery of a base portion constituting the road marking body of FIG. 1;

FIG. 5 is a cross-sectional view showing an example of a periphery of a base portion constituting the road marking body of FIG. 1;

FIG. 6 is a cross-sectional view showing an example of a periphery of a base portion constituting the road marking body of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body part 11 Main body upper end part 2 Base part 21 Anchor bolt 22 Reinforcement material 23 Outer peripheral wall of base part 24 Insert part of base part 25 Bottom part of cylindrical outer peripheral wall 3 Reflection sheet

Claims (4)

[Claims] 1. A main body which is a cylindrical hollow pillar having an upper end closed and a lower end opened, and a base having an insertion portion having an outer diameter substantially equal to the inner diameter of the lower end of the main body. And an inner surface of a lower end portion of the body portion and an outer surface of an insertion portion of the base portion are fused and integrated with each other. 2. The road marking body according to claim 1, wherein the main body is injection-molded using a mold capable of defining a length of the main body by mounting a nested part in a mold. . 3. The road sign according to claim 1, wherein the fusion method is rotational fusion. 4. The road sign according to claim 1, wherein an anchor bolt projects from a lower end of the base.