Vehicle collision protection barrier

Abstract

To provide a vehicle collision protection fence that can be easily installed and effectively prevent vehicles from flying out of the vehicle. [Solution] The vehicle collision protection fence according to the present invention is characterized by comprising a wall member 10 made of concrete, and an elastic member 20 provided on the bottom surface of the wall member 10 and having a swinging part 21 that can tilt the wall member 10 in order to cushion collisions with the wall member 10 from vehicles. By adopting this configuration, the impact of a collision can be reduced because the elastic member acts as a spring by bending. Furthermore, the colliding vehicle is returned to its original lane by the restoring force of the spring, making it easier for the driver to take evasive action afterward.

Description

Technical Field

[0001] Currently, among the total length of high-standard arterial roads in Japan, the provisional two-lane sections account for more than 35%. As structures for separating the upper and lower lanes in such provisional two-lane sections, rubber poles, wire ropes, etc. are widely used. These are widely used because they are easy to install and require a narrow width.

[0002] However, such structures have almost no protective function against collisions by vehicles, and many vehicle runaway accidents occur. Approximately 96% of the runaway accidents on highways are caused by light motor vehicles or ordinary motor vehicles. If the runaway of relatively lightweight vehicles can be prevented, many fatal and serious injury accidents can be avoided.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Therefore, the present invention has been made to solve such problems, and an object thereof is to provide a vehicle collision protection fence that can be easily installed and effectively prevent vehicles from running off.

Means for Solving the Problems

[0005] The present invention employs the following means to achieve the above object.

[0006] The vehicle collision protection fence according to the present invention a wall member made of concrete, and an elastic member provided on the bottom surface of the wall member and having a swing portion capable of tilting the wall member in order to buffer the collision from the vehicle against the wall member It is characterized by having the following features.

[0007] With such a vehicle collision protection barrier, the impact of a collision is mitigated because the elastic material acts as a spring by flexing. Furthermore, the restoring force of the spring returns the colliding vehicle back to its original lane, making it easier for the driver to take evasive action afterward.

[0008] Furthermore, in the vehicle collision protection fence according to the present invention, the swinging part may be provided between a wall-side metal plate attached to the bottom surface of the wall member and a metal plate placed on the road surface, and a gap may be formed on the front and back sides of the swinging part. By providing a gap, the wall member can be easily tilted and the tilting angle can be selected.

[0009] Furthermore, in the vehicle collision protection fence according to the present invention, the elastic member may be characterized by being formed by connecting the bottom surfaces of two metal plates with substantially U-shaped cross-sections. By using an elastic member having such a configuration, the impact of a collision can be effectively mitigated.

[0010] Furthermore, in the vehicle collision protection fence according to the present invention, the elastic member may consist of a flat wall-side metal plate and a laying-side metal plate having a ridge-shaped protrusion, wherein the protrusion is connected to the wall-side metal plate. By using an elastic member having such a configuration, the impact of a collision can be effectively cushioned.

[0011] Furthermore, the vehicle collision protection fence according to the present invention may be characterized in that a buffer member is provided in the gap. By inserting a buffer member, a higher rebound force is achieved, making it easier to push the colliding vehicle back into the driving lane.

[0012] Furthermore, in the vehicle collision protection fence according to the present invention, the laying-side metal plate may be characterized in that it extends beyond the wall surface member. By extending it, the tires will rest on the laying-side metal plate before impact, thereby providing slip resistance and rollover resistance that exceeds the weight of the vehicle collision protection fence.

[0013] Furthermore, the vehicle collision protection fence according to the present invention may be characterized in that the bottom surface of the metal plate on the laying side has an uneven or textured surface. This increases friction with the road surface and increases the resistance to slipping with the road surface.

[0014] Furthermore, in the vehicle collision protection fence according to the present invention, the wall member may be characterized by having a recess in the upper and lower center. By adopting such a configuration, when a vehicle collides, the impact force is initially released upward, and after the vehicle moves upward and rises by a certain amount, a downward force is applied, thereby effectively releasing the impact force while reducing the upward movement of the vehicle. [Brief explanation of the drawing]

[0015] [Figure 1] Figure 1 is a perspective view showing the vehicle collision protection fence 100 according to the first embodiment in a connected state. [Figure 2] Figure 2 is a side view of the vehicle collision protection fence 100. [Figure 3] Figure 3 is a cross-sectional view showing the state in which the vehicle collision protection fence 100 is connected with thin plates 30 according to the first embodiment. [Figure 4] Figure 4 is a side view showing a vehicle collision protection fence 100 according to the second embodiment. [Figure 5] Figure 5 is a side view showing a vehicle collision protection fence 100 according to the third embodiment. [Figure 6] Figure 6 is a side view showing a vehicle collision protection fence 100 according to the fourth embodiment. [Modes for carrying out the invention]

[0016] Hereinafter, with reference to the drawings, the vehicle collision protection fence 100 according to an embodiment of the present invention will be described in detail. The embodiments and drawings described below show an example of an embodiment of the present invention and are not limited to these configurations. It can be appropriately changed without departing from the gist of the present invention. Also, corresponding components in each figure are denoted by the same or similar reference numerals. Furthermore, expressions such as "front", "rear", "side", "top", and "bottom" used in this specification and the claims are to be interpreted based on the direction of the arrows shown in FIG. 1.

[0017] (First Embodiment) An example in which the vehicle collision protection fence 100 according to the first embodiment is laid is shown in FIG. 1. The vehicle collision protection fence 100 according to the present invention is mainly used for the purpose of preventing a vehicle from running out when the vehicle collides, such as a center block or a concrete protection fence. As shown in FIG. 2, it includes a wall member 10 made of concrete and an elastic member 20 provided on the bottom surface side of the wall member 10 to buffer the impact on the wall member 10 due to the vehicle collision.

[0018] The wall member 10 is a protection fence that receives the collision of the vehicle and is made of concrete. As a form, any of a Florida type, a single slope type, and a straight wall type may be used. The size of the present wall member 10 is not particularly limited, but it is preferable to set the height to 300 mm to 800 mm, the width to 100 mm to 400 mm, and the length to 2 m to 3 m.

[0019] The wall surface member 10 is provided with a connecting structure for connecting a plurality of vehicle collision protection fences 100 when they are laid. As shown in FIG. 3, the connecting structure is composed of a groove 13 formed in the wall surface member 10 and a thin plate 30 disposed in the groove 13. The groove 13 has a width into which the thin plate 30 can be inserted, and a step 15 that is lower by one step is provided on the bottom surface of the groove 13 within a certain distance from the side surface of the wall surface member 10. On the other hand, the thin plate 30 is formed with protruding pieces 31 that protrude downward on both sides so as to catch on the step 15. With this structure, by inserting the thin plate 30 so as to straddle the grooves 13 of adjacent wall surface members 10, relative movement in the front-back direction and the side direction is prevented. That is, horizontal movement can be effectively prevented. On the other hand, when it is desired to remove the vehicle collision protection fence 100, it can be easily removed by lifting the vehicle collision protection fence 100 upward.

[0020] As shown in FIG. 2, the elastic member 20 is a member for buffering the impact caused by a vehicle colliding with the wall surface member 10. In the present embodiment, a curved metal plate having a substantially U-shaped or J-shaped cross section is used, and a metal plate in a shape where the bottom surfaces 28 of the U or J are abutted against each other is attached to the bottom surface of the wall surface member 10. The attachment method is not particularly limited. For example, it may be attached with bolts or the like, or it may be integrally formed when manufacturing the wall surface member 10. In the case of integral molding, a structure in which an anchor reinforcing bar 29 or the like is attached to the elastic member 20 and embedded in the wall surface member 10 is recommended.

[0021] A swing portion 21 made of an iron plate is formed below the centers of the front and back of the wall surface member 10, and a gap 50 is provided between a wall surface side metal plate 22 directly attached to the wall surface member 10 and a laying side metal plate 23 disposed on the road surface on the front side and the back side. With this structure, when a vehicle collides, the swing portion 21 functions as a spring and deflects, enabling the wall surface member 10 to tilt in the front and back directions.

[0022] The thickness of the metal plate is set based on the weight of the wall member 10, but it is preferable to set it to approximately 10 mm to 30 mm. The gap 50 provided between the wall-side metal plate 22 and the laying-side metal plate 23 is set according to the installation location, but it is preferable to set it so that even when the wall member 10 is tilted to its maximum extent, the upward movement distance W is 50 cm or less. This is because on narrow roads, the median strip may be set to about 1 m, and if it is tilted by more than 50 cm, there is a possibility that it will protrude into the oncoming lane. Specifically, it is appropriate to set the width of the gap 50 to 100 mm or less.

[0023] It is preferable that the laying-side metal plate 23 be manufactured to extend from the front or back of the wall member 10. By extending the laying-side metal plate 23, when a vehicle collides, the vehicle's tires will rest on the extended portion, pressing down on the elastic member 20 from above. Since the weight of the vehicle is added to the weight of the vehicle collision protection fence 100, it is possible to prevent the vehicle collision protection fence 100 from moving significantly during a collision. Furthermore, the bottom surface of the laying-side metal plate 23 may be given an uneven or textured finish to increase friction with the road surface. This structure improves frictional resistance with the road surface and increases stability during a collision.

[0024] Furthermore, it is possible to insert a cushioning material 25, such as rubber or elastomer, into the gap 50 between the wall-side metal plate 22 of the elastic member 20 and the laying-side metal plate 23 positioned on the road surface. By inserting the cushioning material 25, a higher rebound force is obtained after the vehicle falls, making it easier to push the colliding vehicle back into the driving lane. In addition, since it is possible to prevent the wall-side metal plate 22 and the laying-side metal plate 23 from directly and strongly colliding, the risk of damage to the vehicle collision protection fence 100 can be reduced.

[0025] The vehicle collision protection fence 100 manufactured in this manner is used by connecting multiple fences in a lateral direction, as shown in Figure 1. The method of connection is as described above. When a vehicle collides with the vehicle collision protection fence 100 installed in this manner, it functions as follows.

[0026] First, as the vehicle approaches, its wheels come into contact with the metal plate 23. At this time, in addition to the weight of the vehicle collision protection fence 100, a portion of the vehicle's weight is added to the metal plate 23. As a result, the frictional resistance between the road surface and the metal plate 23 increases, raising the resistance to sliding and the resistance of the vehicle collision protection fence 100 to overturning. Furthermore, when the vehicle collides with the wall member 10, the oscillating part 21 of the elastic member 20 deflects, causing the wall member 10 to tilt as shown in the figure. At this time, the vehicle collision protection fence 100 functions as a flexible protection fence, and the initial impact can be absorbed by the action of the spring. As the pressing force on the wall decreases due to the absorption of collision energy by the spring, the vehicle is pushed back to its original lane by the restoring force of the spring.

[0027] As described above, the vehicle collision protection fence 100 according to the present invention can be easily installed by placing it at a predetermined location on the road and inserting the thin plate 30 into the groove 13. When the vehicle collision protection fence 100 is installed in this manner, it is connected to adjacent vehicle collision protection fences 100, and the tires ride on the metal plate 23 on the installation side before the vehicle collides, so that it can exhibit sliding resistance and rollover resistance that exceeds the weight of the vehicle collision protection fence 100.

[0028] Furthermore, the impact of the collision is absorbed by the bending of the metal plate of the elastic member 20, and the impact can be reduced by the spring function. Then, the colliding vehicle returns to its original lane due to the restoring force of the spring, making it easier for the driver to take evasive action afterward. As a result, the likelihood of the accident being limited to minor self-inflicted damage increases. In addition, since the collision protection fence 100 returns to its original shape due to the spring function, it is highly likely that it can be reused without repair in the case of a minor accident.

[0029] (Second Embodiment) As shown in Figure 4, the vehicle collision protection fence 100 in the second embodiment has a different front and rear shape compared to the wall member 10 in the first embodiment. The other configurations are the same as in the first embodiment, so their explanation is omitted.

[0030] In this second embodiment of the vehicle collision protection fence 100, the upper and lower central portions of the front and rear surfaces are formed in a concave shape. With this structure, in the initial stages of a collision, the vehicle moves upward along the concave surface, releasing the impact force, and then is pushed downward by the upper concave surface, effectively absorbing the impact.

[0031] (Third embodiment) In the third embodiment, as shown in Figure 5, the bottom surface of the wall member 10 of the vehicle collision protection fence 100 is formed as a slope that inclines upward from the center toward the front and rear. Along this bottom surface, the wall-side metal plate 22 of the elastic member 20 is provided. Furthermore, the bottom portions 28 of the left and right metal plates are not connected and are spaced apart from each other. Therefore, the oscillating portion 21 is composed of two parts. As a result, the gap 50 between the wall-side metal plate 22 and the laid-side metal plate 23 gradually widens from the center, making it possible to adjust the angle at which the wall member 10 tilts. By combining a cushioning member 25 such as rubber with the vehicle collision protection fence 100 of this third embodiment, the impact absorption force of the wall member 10 can be adjusted.

[0032] (Fourth Embodiment) As shown in Figure 6, the vehicle collision protection fence 100 in the fourth embodiment differs in the shape of the elastic member 20 from that of the vehicle collision protection fence 100 in the first embodiment. The other configurations are the same as in the first embodiment, so their explanation is omitted.

[0033] The elastic member 20 according to the fourth embodiment comprises a flat wall-side metal plate 22 attached to the bottom surface of the wall member 10, and a laying-side metal plate 23 having a curved, convex, ridge-shaped swinging portion 21. By connecting this swinging portion 21 to the wall-side metal plate 22, a gap 50 is formed between the wall-side metal plate 22 and the laying-side metal plate 23.

[0034] It should be noted that the present invention is not limited to the embodiments described above, and can be implemented in various forms as long as they fall within the technical scope of the present invention.

[0035] In this embodiment, the metal plate 23 on the laying side extends from the wall member 10 to the front and back sides, but it may be extended only to the front or back side as needed. It is also possible to have a structure in which it does not extend on either side. [Industrial applicability]

[0036] As shown in the embodiments described above, it can be used industrially as a block constituting the central band. [Explanation of Symbols]

[0037] 10...Wall member, 13...Groove, 15...Step, 20...Elastic member, 21...Oscillating part, 22...Wall-side metal plate, 23...Installation-side metal plate, 25...Cushioning member, 28...Bottom surface, 30...Thin plate, 31...Protruding piece, 50...Gap, 100...Vehicle collision protection fence

Claims

1. A wall component made of concrete, An elastic member provided on the bottom surface of the wall member, having a pivoting portion that can tilt the wall member in order to cushion collisions with the wall member from a vehicle, A vehicle collision protection fence characterized by having the following features.

2. The vehicle collision protection fence according to claim 1, characterized in that the elastic member is provided between the wall-side metal plate attached to the bottom surface of the wall member and the laying-side metal plate placed on the road surface, and a gap is formed between the front and back sides of the swinging part.

3. The vehicle collision protection fence according to claim 2, characterized in that the elastic member is formed by connecting the bottom surfaces of two curved metal plates having a substantially U-shaped or J-shaped cross-section.

4. The vehicle collision protection fence according to claim 2, characterized in that the elastic member comprises, when viewed from a plane, the wall-side metal plate and the installation-side metal plate having a ridge-shaped protrusion, and the protrusion is connected to the wall-side metal plate.

5. The vehicle collision protection fence according to any one of claims 2 to 4, characterized in that a buffer member is provided in the gap.

6. The vehicle collision protection fence according to any one of claims 2 to 4, characterized in that the metal plate on the laying side is provided extending beyond the wall member.

7. The vehicle collision protection fence according to any one of claims 2 to 4, characterized in that the bottom surface of the metal plate on the laying side has an uneven or textured surface.

8. The vehicle collision protection fence according to any one of claims 1 to 4, characterized in that the wall member has a recess in the upper and lower center.

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