JP2007023520A - Metallic piece adhesion prevention construction method for guard rail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a countermeasure construction method for preventing a metallic piece from adhering to a guard rail in advance because many accidents in which the triangular sharp metallic piece being regarded as a part of a vehicle body adheres to a connection part of a mounting bolt of the guard rail and the guard rail due to contact of a vehicle with the guard rail and a pedestrian and a bicycle user are injured occur and they become social problems. <P>SOLUTION: In this construction method, a head part of a fixed bolt of the existing guard rail and the guard rail connection part having a stepped part are smoothly covered by applying binder to prevent the metallic piece from adhering by hiding a projecting part and the stepped part and ensure safety of the pedestrian. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

In the present invention, a part of the vehicle body remains as a sharp metal piece on the surface of the guard rail due to the accident of contact with the guard rail of the vehicle, and injuries of pedestrians and bicycle users occur frequently. It relates to the construction method.

Conventional guardrail protection measures include shock absorbers that mitigate the impact on the vehicle when the vehicle is in contact with the guardrails, guardrail deformation that reduces the deformation of the guardrail, and guardrail covers that cover guardrail repair costs, resin product cover plates, etc. It had been. In addition, the conventional technology was provided before June 2005, when the report of the guardrail metal piece adhesion accident spread throughout the country, and was aimed at mitigating the impact caused by the collision of the vehicle. It was not the technology that assumed. Therefore, impact shock-absorbing materials and cover plates alone have an effect on vehicle impact mitigation, but because the mounting method is a simple cover type, secondary collisions such as falling off and hitting pedestrians at the time of a collision There is also a risk of occurrence. The countermeasure work to prevent the guardrail metal piece adhesion accident this time has not been made until now.

The elastic cushioning material was intended to minimize damage to the vehicle and guardrail. However, the guardrail metal piece adheres to the surface of the guardrail with scratches caused by skidding of the vehicle, and when the vehicle slides from the side and comes into contact with the elastic body, the elastic body fixed by the bolt blows away by impact, There is a risk of secondary disasters such as hitting a pedestrian, and there is a problem in terms of safety, and the role of cushioning material cannot be fulfilled. (Japanese Patent Laid-Open No. 2001-98518)

As for the beam-embedded semicircular elastic body, cylindrical protective bodies are attached to the upper and lower ends of the beam, and the column is a technology that mainly uses the elastic body to prevent vehicle departure due to collision. However, since it does not cover the guard rail mounting bolt and the guard rail connecting portion, when a side-sliding collision of the vehicle occurs, it is expected that the guard rail metal piece adheres. This technology has not predicted a safety measure in which a part of the vehicle adheres due to a collision. (Japanese Patent Laid-Open No. 9-242034)

Regarding the guardrail cover, it is formed in a bag shape with a base made of rubber or synthetic rubber and a sheet or film, but the one that bends the fixing piece attached to the cover body inward and holds it on the edge and the one that is bolted It was a technology that alleviated the impact on automobiles in the event of a collision and ensured the safety of pedestrians. However, since the latching type is not firmly fixed, the cover itself is blown off when the collision is severe, and there is a risk of a secondary disaster. Further, in the case of the bolt fixing type, since the head is exposed on the surface, there is a possibility that a part of the vehicle body is caught on the bolt and a metal piece adheres at the time of collision. Furthermore, since the product has a multi-layer structure, the manufacturing process is time-consuming, and if the construction is extended, the cost is increased and the economy is not sufficient. (Japanese Patent Laid-Open No. 9-1000051)

Regarding vehicle guard fences, the top rail, which is a factory product, is manufactured from iron, aluminum alloy, etc., and the cross-sectional shape is a hollow structure with a substantially rectangular shape, achieving the purpose to protect existing guard rails. I can't. (Japanese Patent Laid-Open No. 11-93126)

JP 2001-98518 Japanese Patent Laid-Open No. 9-242034 JP-A-11-93126

The only way to remove the metal pieces between the existing guardrails is to remove them manually. However, even if it is removed, there is a possibility of a contact accident again, and the safety of pedestrians and bicycle users is not ensured.

Guard rails that are extremely deformed due to contact accidents need to be replaced, but they do not need to be replaced if vehicle driving and pedestrian safety are ensured. It is to provide a construction method that takes into consideration safety, durability, safety, and convenience.

The present invention smoothly covers the guard rail surface of the existing guard rail fixing bolt head and stepped guard rail connection parts by applying a binder so that there is no sense of incongruity of the projections, and eliminates the step so that the metal pieces are not attached. It provides a construction method to prevent.

As described above, in the present invention, by applying the binder, the protrusion on the surface of the guard rail is hidden and the adhesion of the metal piece is eliminated. In addition, it is excellent in workability, and can be easily repaired even if it is artificially mischievous and broken, so that it is economical.

 Hereinafter, embodiments of the present invention will be described with reference to FIGS.

In the figure, reference numeral 1 denotes a guard rail, which is fixed to a column 3 that fixes the guard rail by means of 2 steel bolts. Here, the connecting portion of the steel bolt 2 and the guard rail is coated by using a binder, so that the protrusions are not caught due to the side slip of the vehicle, and the adhesion of the metal pieces is eliminated. As a result, the gap between the bolt 2 and the guard rail 1 is eliminated and integration is achieved, and peeling of the vehicle surface can be prevented when the vehicle is skid.

FIG. 1 is a cross-sectional view of a guard rail, but the steps are eliminated by smoothly applying a bolt head for fixing the existing guard rail 1 and the surface of the guard rail with a binder 3 so that the surface shape is not uneven. FIG. 3 is a detailed view of the guard rail as viewed from the top. Since the binder is applied with the protrusion and the guard rail connecting portion, the surface of the guard rail is smooth even when the vehicle that has slid is in contact with it. It does not stick and pedestrians and bicycle users are not injured by metal pieces.

It is sectional drawing of a guardrail. It is a guardrail front view. It is detail drawing which looked at the guardrail from the top.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guard rail main body 2 Bolt which fixes a guard rail and a support | pillar 3 Binder 4 The support | pillar 5 which fixes a guard rail Nut

Claims (1)

Sharp metal triangles that appear to be part of the vehicle body due to contact with the vehicle's guard rail adhere to the guard rail mounting bolts and guard rail connections, causing accidents that injure pedestrians and bicycle users, creating a social problem. . The present invention is a countermeasure method capable of preventing a guardrail accident in advance.

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