JPH07150530A - Cushion cover for guard cable end support column - Google Patents

Abstract

PURPOSE:To improve safety by surrounding a guard cable end support column by pipes which are comparatively light weighted and absorbing collision energy. CONSTITUTION:A plurality of pipes 1 connected by a connecting member 4 are provided in a cushion cover 3 and covered in the condition that they are in contact with the support column in such a way that they surround a guard cable end support column 8. Next, when an automobile collides, the pipes 1 are deformed and collision energy is absorbed to some extent, and speed of the automobile is attenuated before it reaches the support column 8. Then, when center of gravity of the whole pipe 1 is arranged in such a way that it leans on a lane side in a plan view, automobile collision energy is absorbed more effectively, and a possibility that the cover 3 comes apart from the column 8 and scatters due to collision is reduced. When the plan view geometrical center of the whole pipe 1 is arranged in such a way that it leans on a lane side, degree of freedom of design is improved. Consequently, it is possible to reduce damage when the automobile makes collision and install the cushion cover on an existing support column simply due to its comparatively simple structure without necessitating special fixing operation at the time of installation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion cover for covering a trailing end of a guard cable on a road.

[0002]

[Prior Art] In snowy areas such as Hokkaido and Tohoku,
Many car tire slip accidents due to road surface freezes occur. Guard cables have traditionally been installed based on the standard at curved areas where it is thought that there are many accidents. The original purpose of this guard cable is to stop the sliding vehicle due to the elasticity of the guard cable and the fall of the intermediate column while the slid vehicle collides diagonally with the guard cable.

However, in practice, it is said that the driver thinks that it is rather dangerous to go to the guard cable, and tends to steer the vehicle to the guard cable end column when slipping. In addition, the end of the guard cable is often the starting point of the bend in the road,
It can be said that it is in a place where slippage occurs most easily. As a result, in many cases, the car will collide head-on with the guard cable end stanchions, and the impact with the sturdy guard cable end stanchions will
Despite the action to avoid the danger, the driver suffers great damage.

In order to prevent this, it has been proposed to wrap the guard cable end column with a soft cushion cover. However, it is unlikely that the conventional cushion cover can completely absorb the momentum depending on the collision direction for a vehicle that collides due to slippage at a speed of about 50 km / h. Is expected to escape.

Therefore, an object of the present invention is to have an excellent energy absorption capability and to accurately dampen the momentum of a vehicle before it reaches the guard cable end column, so that a perfect safety measure can be established. The purpose is to provide a cushion cover for a pillar.

[0006]

DISCLOSURE OF THE INVENTION The present invention uses a plurality of pipes having a closed cross-sectional shape which are relatively lightweight and can be easily manufactured, and the pipes are installed so as to surround the periphery of a guard cable end column. It absorbs collision energy. Hereinafter, using the reference symbols in the accompanying drawings,
Cushion cover 3 for guard cable end column of the present invention
Then, a plurality of pipes 1 connected by a connecting member 4 as a shock absorbing material are provided inside the cushion cover, so that the pipes 1 are in contact with the guard cable end column 8 and surround the guard cable end column 8. Place it.

In one embodiment of the present invention, when the cushion cover 3 is covered with the guard cable end support 8, the center of gravity of the entire shock absorber is arranged so as to be biased to the lane side in plan view.

In another embodiment of the present invention, when the cushion cover 3 is covered with the guard cable terminal support 8, the geometrical center of the entire cushion cover is arranged so as to be biased toward the lane side in plan view.

[0009]

When a slippery vehicle collides with the cushion cover 3, the shock absorbing material pipe 1 provided inside the cushion cover is deformed to absorb the collision energy to some extent and reach the guard cable end column 8. The vehicle speed is dampened before.

The plurality of pipes 1 constituting the shock absorbing material are arranged so as to surround the guard cable end support column 8 in a state of being in contact with the guard cable end support column 8 and are deformed by a collision without largely changing their positions. And functions to absorb energy. In addition, these pipes 1 are connected members 4
Are connected to each other by means of, and they are installed only by covering the guard cable end support column 8 without performing a special fixing operation.

When the center of gravity of the entire shock absorber composed of the plurality of tubes 1 is arranged so as to be biased toward the target lane in plan view, the shock absorber more effectively absorbs the kinetic energy of the automobile. Further, the risk that the cushion cover 3 will fly away from the guard cable end support 8 due to a collision is reduced.

When the geometrical center of the entire cushion cover in plan view is placed on the guard cable end support 8 so that it is biased toward the target lane side, the design of the shock absorber becomes free.

[0013]

EXAMPLE In the illustrated example, the pipe 1 constituting the shock absorbing material is a circular pipe having a cross section made of STK400 steel as shown in FIG. 1, and as an example, a guard cable end column having a diameter of 114.3 mm. 8 has a diameter of 114.3
mm with a large diameter of 2.8 mm and a length of 730 mm, and two large diameter ones with a diameter of 48.6 mm and a thickness of 2.3 mm and a length of 7
Two small diameters of 30 mm are used in combination. Through holes 2 having a diameter of 10 mm are provided in the upper and lower portions of each tube 1 at appropriate height positions, for example, 200 mm from the bottom and 120 mm from the top.

As the connecting member 4 which is inserted into the through hole 2 and connects the pipes 1 and 1 to each other, a wire rope having a diameter of 6 mm and made of 120K high-tensile material is adopted. The pipes 1 connected in parallel at two upper and lower locations are arranged along the length direction of the guard cable end column 8, and are fixed by being wound around the guard cable end column 8 by the connecting member 4. The ends of the connecting member 4 are joined together by the clip 5. At this time, as shown in FIG. 2, the larger-diameter pipe 1 is arranged on the front side of the guard cable end support 8, that is, on the lane side,
The smaller diameter tube 1 is arranged on the back side of the guard cable end column 8.

As shown in FIGS. 3 and 4, the cushion cover outer insert 9 is made of synthetic resin. As an example, an existing guard cable end column 8 with a height of 700 mm
On the other hand, the height of the outer insert 9 is set to 950 mm, and the cross-sectional dimensions of the outer insert 9 are 450 mm in width and 600 mm in length.

The outer insertion body 9 in this example is formed in a hollow structure in which a wall having a required thickness in a horizontal cross section makes one round, and when installed, it has a shape in which it is in close contact with the pipe 1 of the shock absorbing material. ing. Therefore, not only is the cushion cover 3 installed with good stability, but also the force applied to the outer insert 9 is accurately transmitted to the shock absorbing tube 1.
The shock absorption by the tube 1 is excellent.

However, the shape structure of the outer insertion body 9 is not limited to this, and for example, the support tube 10 into which the guard cable end support 8 is fitted as shown in FIG. 5, or the guard cable end as shown in FIG. It is also possible to attach a support member such as the pillar 8 or a rib 11 that abuts the shock absorber 1 to the outer insertion body 9, thereby providing stable installation of the outer insertion body 9 and good force transmission.

The supporting cylinder 10 shown in the figure is cylindrical, and inside the supporting cylinder 10, there is provided a seat portion 10a with which the head of the guard cable end support 8 contacts, and the seat portion 10a and the supporting cylinder 10 are provided. A tapered guide tube portion 10 is provided between the lower end portion and the lower end portion.
b is provided. Further, the rib 11 is disk-shaped, and a notched circular receiving portion 11a into which the guard cable end support 8 and the pipe 1 are fitted is provided at the center of the rib 11, and the receiving portion 11a and the rib 11 are provided. A V-shaped guide groove portion 11b that is open to the outer peripheral side is provided between the outer peripheral portion and the outer peripheral portion.

As a common example, when an automobile collides with the cushion cover 3 in the direction of arrow A in FIG. 4, the automobile comes into contact with the shock absorber tube 1 before reaching the guard cable end support 8, and the kinetic energy is increased. While being deprived by the deformation of the pipe 1, the velocity is attenuated, and the damage due to the collision with the final guard cable end support 8 is reduced.

[0020]

As described above, according to the cushion cover for the guard cable end column of the present invention, a part of the kinetic energy of the vehicle that collides is placed in contact with the guard cable end column and the shock absorbing material pipe is arranged. Since it is absorbed by deformation, it is possible to reduce damage when the vehicle collides with the guard cable end column.

Since this cushion cover has a relatively simple structure and does not require any special fixing operation at the time of installation, it can be easily installed even on the existing guard cable end column. Considering the current situation that many guard cables are already installed in snowy areas and it is impossible to modify them, such ease of installation is extremely useful for establishing early safety measures. Is.

[Brief description of drawings]

FIG. 1 is a perspective view of a pipe used as an impact absorbing material of a cushion cable end support cushion cover of the present invention.

FIG. 2 is a plan view when four pipes are connected and wound around a guard cable end column.

FIG. 3 is a front view showing a usage state of the cushion cable end support cushion cover.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a perspective view of an outer insert of a cushion cover for another guard cable end column according to the present invention.

FIG. 6 is a perspective view of an outer insert of a cushion cover for a guard cable end column according to still another embodiment of the present invention.

[Explanation of symbols]

1 Shock absorbing material pipe 2 Through hole for inserting connecting member 3 Cushion cover 4 Connecting member 5 Clip for connecting end of connecting member 6 Bolt for fixing end of guard cable 7 Guard cable 8 Guard cable end support 9 Cushion cover outer insert 10 Support Cylinders Attached to Outer Insert 10a Seat 10b Guide Cylinder 11 Ribs Attached to Outer Insert 11a Receiving Part 11b Guide Groove A Direction of traveling of automobile in many cases when driver collides with cushion cover

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hirotoshi Hishida 20-1 Shintomi, Futtsu-shi, Chiba Central Research Division, Nippon Steel Co., Ltd. (72) Inventor Toshiro Mimaki 20-1 Shintomi, Futtsu-shi, Chiba Shin-Nihon (72) Inventor, Yukihisa Kuriyama, 20-1 Shintomi, Futtsu City, Chiba Prefecture Nippon Steel Co., Ltd., Central Research Headquarters (72) Inventor, Mitsuo Goto 4, Kita Rokujo Higashi 4-chome, Kitami City, Hokkaido Hikari Kogyo Co., Ltd. (72) Inventor Asakawa ▲ Susumu ▼ 20, Kushino-cho, Fukui-shi, Fukui Prefecture Kaido Kogyo Co., Ltd. (72) Inventor, Aiyoshi Taniguchi 2-11-9 Iwamoto-cho, Chiyoda-ku, Tokyo Nittetsu Corrosion Protection Co., Ltd.

Claims (3)

[Claims] 1. A cushion cover having a plurality of pipes connected to each other by a connecting member as a shock absorbing material, and the pipes are arranged so as to be in contact with the guard cable end column and surround the guard cable end column. Cushion cover for the guard cable end column. 2. When covering the guard cable end support,
The cushion cover for the guard cable end column according to claim 1, wherein the center of gravity of the entire shock absorbing material is arranged so as to be biased to the lane side in a plan view. 3. When the guard cable end support is coated,
The cushion cover for the guard cable terminal support column according to claim 2, wherein the cushion cover is arranged so that the geometric center of the entire cushion cover is biased to the lane side in a plan view.