Car stop pole device

Abstract

To prevent a car stop pole from being completely bent, damaged or broken when an excessive force is applied to the car stop pole.SOLUTION: A reinforcement device 20 disposed in the car stop pole 10 has a strong reinforcement part 31 having both an outer cylindrical body 21 and an inner cylindrical body 22, and a weak reinforcement part 32 formed of only the outer cylindrical body 21. The ratio of the length L1 of the strong reinforcement part 31 to the length L2 of the weak reinforcement part 32 is 70:30 to 95:5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a vehicle stop pole device installed on roads, sidewalks, parks, etc. [Background technology]

[0002] 2. Description of the Related Art Conventionally, vehicle stop poles have been installed on roads, sidewalks, parks, and the like for the purpose of prohibiting vehicles from entering the roads.

[0003] Such a vehicle stop pole generally has an elongated cylindrical body and is installed by being buried in the ground. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility model registration No. 3215043 Summary of the Invention [Problem to be solved by the invention]

[0005] When a vehicle or the like collides with the above-mentioned car stop pole, it is considered that a large impact is applied to the car stop pole. In such a case, in order to reinforce the car stop pole, it is considered to insert a reinforcing device into the car stop pole. However, when a vehicle or the like collides with the car stop pole, excessive force is concentrated on the car stop pole near the end of the reinforcing device, and the car stop pole may be completely bent, damaged, or broken near the end of the reinforcing device.

[0006] The present disclosure has been made in consideration of these points, and aims to provide a car stop pole device that can effectively and easily reinforce a car stop pole embedded in the ground, and can prevent the car stop pole from bending completely, breaking, or breaking even if excessive force is applied to the car stop pole. [Means for solving the problem]

[0007] The present disclosure relates to a vehicle stop pole device comprising: a vehicle stop pole including a cylindrical body partially buried in the ground; and an elongated reinforcing device provided within the cylindrical body of the vehicle stop pole, the reinforcing device having an outer cylindrical body and an inner cylindrical body attached within the outer cylindrical body, the reinforcing device having a strong reinforcement section including both the outer cylindrical body and the inner cylindrical body, and a weak reinforcement section located below the strong reinforcement section and including only one of the outer cylindrical body and the inner cylindrical body, the ratio of the length of the strong reinforcement section to the length of the weak reinforcement section being 70:30 to 95:5.

[0008] The present disclosure is a vehicle stop pole device in which the outer cylindrical body has the same bending rigidity along the longitudinal direction and the inner cylindrical body has the same bending rigidity along the longitudinal direction, thereby giving the strong reinforcement portion greater bending rigidity than the weak reinforcement portion.

[0009] The present disclosure relates to a vehicle stop pole device, wherein the reinforcement device is stored within the vehicle stop pole over its entire longitudinal length, the upper end of the reinforcement device is located at the expected point of vehicle collision, and the lower end of the reinforcement device is located at the expected point of bending of the vehicle stop pole in the event of a vehicle collision.

[0010] The present disclosure is directed to a vehicle stop pole device, in which the outer cylinder body and the inner cylinder body are both rectangular cylinder bodies. Effect of the Invention

[0011] As described above, according to the present disclosure, it is possible to reliably and easily reinforce a vehicle stop pole, and even if excessive force is applied to the vehicle stop pole, it is possible to prevent it from completely bending, breaking, or breaking. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a side cross-sectional view showing a car stop pole device according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view showing the vehicle stop pole device according to the first embodiment. [Figure 3A]FIG. 3A is a cross-sectional side view showing a reinforcing device. [Figure 3B] FIG. 3B is a front view showing the reinforcing device. [Figure 4A] FIG. 4A is a perspective view showing a reinforcing device. [Figure 4B] FIG. 4B is a top view showing the reinforcing device with the cover removed for convenience. [Figure 5A] FIG. 5A is a side view showing an outer cylinder of the reinforcement device. [Figure 5B] FIG. 5B is a side cross-sectional view showing the inner cylindrical body of the reinforcing device. [Figure 6A] FIG. 6A is a diagram showing a method for installing a car stop pole device. [Figure 6B] FIG. 6B is a diagram showing a method of installing the car stop pole device. [Figure 6C] FIG. 6C is a diagram showing a method of installing the car stop pole device. [Figure 7] FIG. 7 is a diagram showing the positional relationship between the car stop pole and the reinforcement device after a car collides with the car stop pole device. [Figure 8] FIG. 8 is a diagram showing a modified example of the car stop pole device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] <Present embodiment> Hereinafter, the present embodiment according to the present disclosure will be described with reference to the drawings.

[0014] 1 to 7 are diagrams illustrating the present embodiment according to the present disclosure.

[0015] As shown in Figures 1 to 7, the car stop pole device 10A of this embodiment comprises a car stop pole 10 that is embedded in the ground 1A and includes an elongated cylindrical body 11 having a lower end 11a and an upper end 11b, and an elongated reinforcing device 20 provided within the cylindrical body 11 of the car stop pole 10.

[0016] Of these, the car stop pole 10 is made entirely of steel, and the reinforcing device 20 is also made entirely of steel. The car stop pole 10 includes a cylindrical body 11 that is embedded in the ground 1A, and in this embodiment the ground 1A is made up of layers formed below the ground surface 1. In other words, the ground 1A is made up of a ground 2 arranged in sequence from the lower layer to the upper layer, a roadbed 3 on the ground 2, and a pavement 4 on the roadbed 3.

[0017] The upper surface of the pavement 4 becomes the ground surface 1, and the cylindrical body 11 of the car stop pole 10 is embedded in the ground 1A.

[0018] The lower end 11a of the cylindrical body 11 buried in the ground 1A is open, and the upper end 11b is sealed by a cap 11c.

[0019] 3A to 5B, the elongated reinforcing device 20 provided in the cylindrical body 11 will be described. The reinforcing device 20 has an outer cylindrical body 21 made of a regular square cylinder having four corners 21a and four faces 21b, and an inner cylindrical body 22 made of a regular square cylinder having four corners 22a and four faces 22b, which is inserted into the outer cylindrical body 21. Each corner 22a of the inner cylindrical body 22 abuts against a corresponding face 21b of the outer cylindrical body 21 (see FIGS. 3B and 4B).

[0020] In this embodiment, each corner 22a of inner cylinder body 22 abuts against a central portion 21c of a corresponding surface 21b of outer cylinder body 21, and is fixed by welding to central portion 21c of surface 21b.

[0021] Here, central portion 21c of corresponding surface 21b of external cylinder body 21 refers to a central portion of surface 21b between corner portions 21a of external cylinder body 21. Since each corner portion 22a of internal cylinder body 22 abuts against central portion 21c of corresponding surface 21b of external cylinder body 21 in this manner, external cylinder body 21 made of a regular square cylinder and internal cylinder 22 made of a regular square cylinder are arranged in a state where similar shapes are rotated by 45° each other.

[0022] In this way, the reinforcing device 20 is composed of the outer cylindrical body 21 and the inner cylindrical body 22 which are similar in shape and rotated by 45° each other, and this gives the reinforcing device 20 itself great bending rigidity.

[0023] As described above, the reinforcement device 20 has the outer cylindrical body 21 and the inner cylindrical body 22 provided inside the outer cylindrical body 21, and includes the lower end 20a and the upper end 20b. The lower end 20a of the reinforcement device 20 is open, and the upper end of the reinforcement device 20 is sealed by a lid 23 (see FIG. 3A). The lower end 20a of the reinforcement device 20 is open, and is buried in the ground together with the cylindrical body 11 while taking in soil and sand inside.

[0024] As shown in FIG. 1, the reinforcement device 20 has a strong reinforcement portion 31 including both the outer cylindrical body 21 and the inner cylindrical body 22 formed along the longitudinal direction, and a weak reinforcement portion 32 located below this strong reinforcement portion 31 and including only the outer cylindrical body 21.

[0025] In this embodiment, the terms "above" and "below" refer to the "above" and "below" when a car stop pole device 10A is installed underground 1A as shown in FIG.

[0026] In the present embodiment, the strongly reinforced portion 31 of the reinforcement device 20 includes both the outer cylindrical body 21 and the inner cylindrical body 22, and the weakly reinforced portion 32 includes only the outer cylindrical body 21, but this is not limited thereto, and the weakly reinforced portion 32 may include only the inner cylindrical body 22. That is, the inner cylindrical body 22 may be extended downwardly relative to the outer cylindrical body 21, and the inner cylindrical body 22 may protrude downwardly from the outer cylindrical body 21.

[0027] In this embodiment, the ratio of the length L1 of the strong reinforcement portion 31 to the length L2 of the weak reinforcement portion 32 of the reinforcement device 20 is 70:30 to 95:5, and preferably 85:15.

[0028] As described above, the strong reinforcement portion 31 of the reinforcement device 20 has the outer cylindrical body 21 and the inner cylindrical body 22, and therefore includes the outer cylindrical body 21 made of a rectangular cylinder and the inner cylindrical body made of a rectangular cylinder, and has a relatively large bending rigidity as described later. On the other hand, the weak reinforcement portion 32 is composed only of the outer cylindrical body 21 made of a rectangular cylinder, and therefore has a relatively small bending rigidity as described later.

[0029] Here, the bending rigidity is defined by the second moment of area of ​​the reinforcing device 20 multiplied by the Young's modulus of the material.

[0030] In this embodiment, the outer cylindrical body 21 of the reinforcement device 20 has the same cross section along the longitudinal direction, and therefore has the same bending stiffness along the longitudinal direction. Similarly, the inner cylindrical body 22 has the same cross section along the longitudinal direction, and therefore has the same bending stiffness along the longitudinal direction.

[0031] For this reason, as described above, the strong reinforcement portion 31 of the reinforcement device 20 has a relatively large bending rigidity, and the weak reinforcement portion 32 has a relatively small bending rigidity.

[0032] The reinforcing device 20 is provided inside the car stop pole 10 to reinforce the car stop pole 10, and the strong reinforcing portion 31 of the reinforcing device 20 has a large bending rigidity to firmly reinforce the car stop pole 10. On the other hand, the weak reinforcing portion 32 has a small bending rigidity to flexibly reinforce the car stop pole 10.

[0033] In this embodiment, the ratio of the length L1 of the strong reinforcement portion 31 of the reinforcement device 20 to the length L2 of the weak reinforcement portion 32 is preferably 85:15 as described above, and specifically, the length L1 of the strong reinforcement portion 31 is 700 mm to 1000 mm, and the length L2 of the weak reinforcement portion 32 is 50 mm to 300 mm.

[0034] 1, in the car stopping pole device 10A, if the length of the portion of the car stopping pole 10 that protrudes upward from the ground surface 1 is L3 and the length of the portion of the car stopping pole 10 that is embedded in the ground 1A is L4, then L3≦L4. Also, the reinforcing device 20 is stored within the car stopping pole 10 over its entire length.

[0035] In addition, soil of the ground 2 penetrates into the car stop pole 10 from the lower end 11a of the cylindrical body 11, and the reinforcing device 20 is supported by the soil of the ground 2 that has penetrated into the car stop pole 10.

[0036] In this embodiment, Fig. 7 shows an expected collision point 37 of the car stop pole 10, assuming that a vehicle or the like collides with the car stop pole device 10A. In addition, when a vehicle or the like collides with the car stop pole device 10A, the car stop pole 10 is considered to bend from the vicinity of the expected bending point 35.

[0037] According to this embodiment, the reinforcing device 20 is inserted into the car stop pole 10 of the car stop pole device 10A, and the reinforcing device 20 is positioned so that its lower end 20a is located near the predicted bending point 35 of the car stop pole 10. At this time, the upper end 20b of the reinforcing device 20 is located near the predicted collision point 37 (see FIG. 7).

[0038] In FIG. 7, reference numeral 36 denotes a predicted ground surface line that corresponds to the ground surface 1 when the car stop pole 10 is buried in the ground 1A.

[0039] Next, the operation of the present embodiment having the above-mentioned configuration will be described. First, a method for installing the car stop pole device 10A will be described with reference to Figures 6A to 6C.

[0040] 6A, the reinforcing device 20 is set up on the ground surface 1 so that the lower end 20a of the reinforcing device 20 is in contact with the ground surface 1.

[0041] Next, the car stop pole 10 is placed over the outside of the reinforcement device 20, and the car stop pole 10 is set up on the ground surface 1 via the lower end 11a of the cylindrical body 11. At this time, the cap 11c is removed from the upper end 11b of the cylindrical body 11.

[0042] Thereafter, a pressing jig 40 is inserted into the car stop pole 10 via the upper end 11b of the cylinder 11. Thereafter, a pressing device (not shown) applies pressure from above to the car stop pole 10 standing on the ground surface 1, driving the car stop pole 10 into the ground 1A. If it is difficult to drive the car stop pole 10 due to the condition of the pavement 4 and roadbed 3 that make up the ground surface 1, the pavement 4 and roadbed 3 may be removed and the car stop pole 10 may be driven into the ground 2.

[0043] When the car stop pole 10 is driven into the ground 1A by a pressing device (not shown), the car stop pole 10 descends into the ground 1A. At that time, soil and sand in the ground 1A enters the car stop pole 10 from the lower end 11a of the cylindrical body 11.

[0044] In this way, as the soil and sand in the ground 1A enters the car stopping pole 10 from the lower end 11a of the cylinder 11, the reinforcement device 20 is blocked by the soil and rises relatively within the car stopping pole 10 (see FIG. 6B).

[0045] Thereafter, the upper end 11b of the cylindrical body 11 and the upper surface of the pressing jig 40 come into contact with a pressing device (not shown), stopping the relative ascent of the reinforcement device 20 within the car stop pole 10. In this way, the upper end 11b of the cylindrical body 11 and the upper surface of the pressing jig 40 come into contact with the pressing device (not shown) and the heights of the upper surface of the pressing jig 40 and the upper end 11b of the cylindrical body 11 become aligned, stopping the relative ascent of the reinforcement device 20 within the car stop pole 10 and positioning the reinforcement device 20 along the longitudinal direction within the car stop pole 10.

[0046] Furthermore, by driving the car stop pole 10 and the reinforcement device 20 into the ground 1A via the pressing jig 40, the car stop pole 10 is positioned at a predetermined position in the ground 1A while soil from the ground 1A flows into the reinforcement device 20 through the opening at the lower end 20a of the reinforcement device 20 (see Figure 6C).

[0047] Next, the pressing jig 40 is removed from inside the car stop pole 10, and the cap 11c is fitted onto the upper end portion 11b of the cylindrical body 11 of the car stop pole 10.

[0048] In this manner, a car stop pole device 10A having the car stop pole 10 and the reinforcing device 20 is obtained.

[0049] When a vehicle or the like collides with the vehicle stop pole device 10A during use, the vehicle or the like collides with the portion of the vehicle stop pole 10 that protrudes upward near an expected collision point 37 (see FIG. 7).

[0050] As shown in FIG. 7, the collision of the vehicle or the like causes the vehicle stop pole 10 to bend in the vicinity of an expected bending point 35 of the portion of the vehicle stop pole 10 that is embedded in the ground 1A.

[0051] In this embodiment, the upper end 20b of the reinforcement device 20 is located near the predicted collision point 37 of the car stop pole 10, and the lower end 20a of the reinforcement device 20 is located near the predicted bending point 35 of the car stop pole 10. Generally, the position of the predicted bending point 35 varies depending on the strength of the ground 1A, but in this embodiment, by providing the reinforcement device 20, the predicted bending point 35 can be brought near the lower end 20a of the reinforcement device 20.

[0052] Therefore, when a vehicle or the like collides with the vehicle stop pole device 10A, the strong reinforcing portion 31 of the reinforcing device 20, which is positioned below the expected collision point 37 and has great bending rigidity, can absorb the impact from the vehicle or the like.

[0053] Furthermore, when a vehicle or the like collides with the car stop pole device 10A, the car stop pole 10 bends from the vicinity of the predicted bending point 35, but the weak reinforcement part 32 with low bending rigidity is located in the portion above the predicted bending point 35 where the car stop pole 10 bends. In other words, the portion above the predicted bending point 35 is the portion where bending of the car stop pole 10 begins, and this portion of the car stop pole 10 can be flexibly reinforced by the weak reinforcement part 32 with low bending rigidity.

[0054] This allows the car stop pole 10 to be gradually bent by the weak reinforcement portion 32 to a position above the expected bending point 35, specifically from the boundary 33 between the weak reinforcement portion 32 and the strong reinforcement portion 31 to the expected bending point 35.

[0055] As a result, sudden force is not concentrated on the expected bending point 35 of the car stop pole 10 when a vehicle or the like collides with the car stop pole 10, so that the car stop pole 10 is not broken due to force being concentrated on the car stop pole 10, and a fatal impact is not applied to the vehicle or the like due to a reaction force from the car stop pole 10.

[0056] As described above, according to this embodiment, when a vehicle or the like collides with the car stop pole device 10A, the strong reinforcement portion 31 of the reinforcement device 20 arranged below the expected collision point 37 of the car stop pole 10 can absorb the impact from the vehicle or the like. Also, the car stop pole 10 can be flexibly reinforced by the weak reinforcement portion 32 arranged above the expected bending point 35 of the car stop pole 10. Therefore, sudden force is not concentrated on the car stop pole 10 when a vehicle or the like collides, and it is possible to prevent the car stop pole 10 from breaking near the expected bending point 35.

[0057] The ratio of the length L1 of the strong reinforcement portion 31 to the length L2 of the weak reinforcement portion 32 of the reinforcement device 20 is 70:30 to 95:5, and preferably 85:15.

[0058] In other words, if the length L1 of the strong reinforcement portion 31 is shorter than the above numerical values ​​and the length L2 of the weak reinforcement portion 32 is longer, when a vehicle or the like collides with the car stop pole device 10A, it becomes difficult for the strong reinforcement portion 31 of the reinforcement device 20 to reliably reinforce the car stop pole 10.

[0059] On the other hand, if the length L1 of the strong reinforcement portion 31 is longer than the above numerical values ​​and the length L2 of the weak reinforcement portion 32 is shorter than the above numerical values, it becomes difficult for the weak reinforcement portion 32 of the reinforcement device 20 to flexibly reinforce the car stop pole 10 when a vehicle or the like collides with the car stop pole device 10A.

[0060] In contrast, according to this embodiment, in the event of a vehicle or the like colliding with the car stop pole device 10A, the car stop pole 10 can be reliably reinforced by the strong reinforcement portion 31 of the reinforcement device 20, and the car stop pole 10 can be flexibly reinforced by the weak reinforcement portion 32 of the reinforcement device 20.

[0061] <Modification> Modifications of the present disclosure will now be described with reference to the drawings.

[0062] FIG. 8 is a diagram showing a modified example of the present disclosure.

[0063] As shown in FIG. 8, the car stop pole device 10A comprises a car stop pole 10 that is embedded in the ground 1A and includes an elongated cylindrical body 11 having a lower end 11a and an upper end 11b, and an elongated reinforcing device 20 provided within the cylindrical body 11 of the car stop pole 10.

[0064] Of these, the car stop pole 10 includes a cylindrical body 11 embedded in the ground 1A, which is made up of layers formed below the ground surface 1. In other words, the ground 1A is made up of a ground 2 arranged in sequence from the lower layer to the upper layer, a roadbed 3 on the ground 2, and a pavement 4 on the roadbed 3.

[0065] The upper surface of the pavement 4 becomes the ground surface 1, and the cylindrical body 11 of the car stop pole 10 is embedded in the ground 1A. A part of the cylindrical body 11 embedded in the ground 1A is surrounded and reinforced by a mortar portion 5 filled in the ground 1A (see FIG. 8). Note that the mortar portion 5 may be replaced with concrete.

[0066] The lower end 11a of the cylindrical body 11 buried in the ground 1A is open, and the upper end 11b is sealed by a cap 11c.

[0067] Similar to the embodiment described above, the reinforcing device 20 has an outer cylindrical body 21 made of a regular square cylinder having four corners 21a and four faces 21b, and an inner cylindrical body 22 made of a regular square cylinder having four corners 22a and four faces 22b, which is inserted into the outer cylindrical body 21. Each corner 22a of the inner cylindrical body 22 abuts against a corresponding face 21b of the outer cylindrical body 21 (see FIGS. 3A to 5B).

[0068] In this modification, each corner 22a of internal cylinder body 22 abuts against a central portion 21c of corresponding surface 21b of external cylinder body 21, and is fixed by welding to central portion 21c of surface 21b.

[0069] Here, central portion 21c of corresponding surface 21b of external cylinder body 21 refers to a central portion of surface 21b between corner portions 21a of external cylinder body 21. Since each corner portion 22a of internal cylinder body 22 abuts against central portion 21c of corresponding surface 21b of external cylinder body 21 in this manner, external cylinder body 21 made of a regular square cylinder and internal cylinder 22 made of a regular square cylinder are arranged in a state where similar shapes are rotated by 45° each other.

[0070] In this way, the reinforcing device 20 is composed of the outer cylindrical body 21 and the inner cylindrical body 22 which are similar in shape and rotated by 45° each other, and this gives the reinforcing device 20 itself great bending rigidity.

[0071] As described above, the reinforcement device 20 has the outer cylindrical body 21 and the inner cylindrical body 22 provided inside the outer cylindrical body 21, and includes the lower end 20a and the upper end 20b. The lower end 20a of the reinforcement device 20 is open, and the upper end of the reinforcement device 20 is sealed by a lid 23 (see FIG. 3A). The lower end 20a of the reinforcement device 20 is open, and is buried in the ground together with the cylindrical body 11 while taking in soil and sand inside.

[0072] Further, the reinforcing device 20 has a strongly reinforced portion 31 having the outer cylindrical body 21 and the inner cylindrical body 22, and a weakly reinforced portion 32 consisting of only the outer cylindrical body 21.

[0073] In this modification, the support force of the car stopping pole 10 of the car stopping pole device 10A to the ground 1A is reinforced by the mortar portion 5, and when the length of the part of the car stopping pole 10 that protrudes upward from the ground surface 1 is L3 and the length of the part of the car stopping pole 10 that is embedded in the ground 1A is L4, L3 ≧ L4 may be satisfied. Also, the reinforcing device 20 is stored within the car stopping pole 10 over its entire length.

[0074] The reinforcement device 20 is positioned so that its lower end 20a is located near the expected bending point 35 of the car stop pole 10. At this time, the upper end 20b of the reinforcement device 20 is located near the expected collision point 37.

[0075] In this modification, the support force of the car stopping pole 10 in the ground 1A is reinforced by the mortar portion 5, so there is no need to embed the car stopping pole 10 deeper in the ground 1A compared to the embodiment shown in Figures 1 to 7, and the embedded length of the car stopping pole 10 in the ground 1A can be shortened. Therefore, even if there is an obstacle deep in the ground 1A, the car stopping pole 10 can be embedded reliably in the ground 1A.

[0076] The expected collision point 37 of the car stop pole 10 is at the same height as in the embodiment shown in Figures 1 to 7. In addition, the reinforcement device 20 has a strong reinforcement portion 31 and a weak reinforcement portion 32. In Figure 8, if the length of the strong reinforcement portion 31 is L1 and the length of the weak reinforcement portion 32 is L2, L1:L2=70:30 to 95:5, preferably L1:L2=80:20.

[0077] In addition, the upper end 20b of the reinforcement device 20 is sealed by a lid 23.

[0078] Next, the operation of the present embodiment having the above-mentioned configuration will be described. First, a method of installing the car stop pole device 10A will be described with reference to FIG.

[0079] First, an opening 5A to be filled with mortar is formed in the underground 1A consisting of the ground 2, roadbed 3, and pavement 4. Next, a reinforcing device 20 is erected in the opening 5A. At this time, the lower end 20a of the reinforcing device 20 is in contact with the bottom surface 5B of the opening 5A.

[0080] Next, the car stop pole 10 is placed over the reinforcement device 20 from the outside, and the car stop pole 10 is set up on the bottom surface 5B of the opening 5A via the lower end 11a of the cylindrical body 11. At this time, the cap 11c is removed from the upper end 11b of the cylindrical body 11.

[0081] Then, a pressing jig 40 (see FIG. 6A) is inserted into the car stop pole 10 via the upper end portion 11b of the cylinder 11. Then, a pressing device (not shown) applies pressure from above to the car stop pole 10 standing on the bottom surface 5B of the opening 5A, and the car stop pole 10 is driven into the ground 1A.

[0082] When the car stop pole 10 is driven into the ground 1A by a pressing device (not shown), the car stop pole 10 descends into the ground 1A. Then, soil from the ground 2 enters the car stop pole 10 from the lower end 11a of the cylindrical body 11.

[0083] In this way, as the soil of the ground 2 enters the car stop pole 10 from the lower end 11a of the cylinder 11, the reinforcing device 20 is blocked by the soil of the ground 2 within the car stop pole 10 and rises relatively within the car stop pole 10.

[0084] Thereafter, the upper end 11b of the cylindrical body 11 and the upper surface of the pressing jig 40 come into contact with a pressing device (not shown), stopping the relative ascent of the reinforcement device 20 within the car stop pole 10. In this way, the upper end 11b of the cylindrical body 11 and the upper surface of the pressing jig 40 come into contact with the pressing device (not shown) and the heights of the upper surface of the pressing jig 40 and the upper end 11b of the cylindrical body 11 become aligned, stopping the relative ascent of the reinforcement device 20 within the car stop pole 10 and positioning the reinforcement device 20 along the longitudinal direction within the car stop pole 10.

[0085] Furthermore, by driving the car stop pole 10 and the reinforcement device 20 into the ground 2 via the pressing jig 40, the soil of the ground 2 flows into the reinforcement device 20 through the opening at the lower end 20a of the reinforcement device 20, and the car stop pole 10 is placed at a predetermined position in the ground 1A (see Figure 8).

[0086] Next, the pressing jig 40 is removed from inside the car stop pole 10, and the cap 11c is fitted onto the upper end 11b of the cylindrical body 11 of the car stop pole 10. Thereafter, the opening 5A is filled with mortar to form the mortar portion 5.

[0087] In this manner, a car stop pole device 10A having the car stop pole 10 and the reinforcing device 20 is obtained.

[0088] When a vehicle or the like collides with the vehicle stop pole device 10A during use, the vehicle or the like collides with a part of the vehicle stop pole 10 that protrudes upward near an expected collision point 37 (see FIG. 8).

[0089] Furthermore, due to the collision of the vehicle or the like, the car stop pole 10 is bent in the vicinity of the predicted bending point 35 of the portion of the car stop pole 10 that is embedded in the ground 1A.

[0090] In this modified example, the upper end 20b of the reinforcement device 20 is located near the expected collision point 37 of the car stop pole 10, and the lower end 20a of the reinforcement device 20 is located near the expected bending point 35 of the car stop pole 10.

[0091] Therefore, when a vehicle or the like collides with the vehicle stop pole device 10A, the strong reinforcing portion 31 of the reinforcing device 20, which is positioned below the expected collision point 37 and has great bending rigidity, can absorb the impact from the vehicle or the like.

[0092] Furthermore, when a vehicle or the like collides with the car stop pole device 10A, the car stop pole 10 bends from the vicinity of the predicted bending point 35, but the weak reinforcement part 32 with low bending rigidity is located in the portion above the predicted bending point 35 where the car stop pole 10 bends. In other words, the portion above the predicted bending point 35 is the portion where bending of the car stop pole 10 begins, and this portion of the car stop pole 10 can be flexibly reinforced by the weak reinforcement part 32 with low bending rigidity.

[0093] This allows the car stop pole 10 to be gradually bent by the weak reinforcement portion 32 to a position above the expected bending point 35, specifically from the boundary 33 between the weak reinforcement portion 32 and the strong reinforcement portion 31 to the expected bending point 35 (see Figure 8).

[0094] As a result, sudden force is not concentrated on the expected bending point 35 of the car stop pole 10 when a vehicle or the like collides with the car stop pole 10, so that the car stop pole 10 is not broken due to force being concentrated on the car stop pole 10, and a fatal impact is not applied to the vehicle or the like due to a reaction force from the car stop pole 10.

[0095] As described above, according to this modified example, when a vehicle or the like collides with the car stop pole device 10A, the strong reinforcement portion 31 of the reinforcement device 20 arranged below the expected collision point 37 of the car stop pole 10 can absorb the impact from the vehicle or the like. Also, the car stop pole 10 can be flexibly reinforced by the weak reinforcement portion 32 arranged above the expected bending point 35 of the car stop pole 10. Therefore, sudden force is not concentrated on the car stop pole 10 when a vehicle or the like collides, and it is possible to prevent the car stop pole 10 from breaking near the expected bending point 35.

[0096] The ratio of the length L1 of the strong reinforcement portion 31 of the reinforcement device 20 to the length L2 of the weak reinforcement portion 32 is 70:30 to 95:5, and preferably 80:20.

[0097] In other words, if the length L1 of the strong reinforcement portion 31 is shorter than the above numerical values ​​and the length L2 of the weak reinforcement portion 32 is longer, when a vehicle or the like collides with the car stop pole device 10A, it becomes difficult for the strong reinforcement portion 31 of the reinforcement device 20 to reliably reinforce the car stop pole 10.

[0098] On the other hand, if the length L1 of the strong reinforcement portion 31 is longer than the above numerical values ​​and the length L2 of the weak reinforcement portion 32 is shorter than the above numerical values, it becomes difficult for the weak reinforcement portion 32 of the reinforcement device 20 to flexibly reinforce the car stop pole 10 when a vehicle or the like collides with the car stop pole device 10A.

[0099] In contrast, according to this modified example, in the event of a vehicle or the like colliding with the vehicle stop pole device 10A, the vehicle stop pole 10 can be reliably reinforced by the strong reinforcement portion 31 of the reinforcement device 20, and the vehicle stop pole 10 can be flexibly reinforced by the weak reinforcement portion 32 of the reinforcement device 20.

[0100] In the above embodiment and modified example, the outer cylinder 21 and the inner cylinder 22 of the reinforcement device 20 have the same cross section over their entire length, but the outer cylinder 21 and the inner cylinder 22 may have different cross sections over their entire length. In addition, the example in which the car stop pole 10 is made of the cylindrical body 11 has been shown, but the present invention is not limited to this, and the car stop pole 10 may be made of a cylinder, for example, a rectangular cylinder. In addition, only one car stop pole device 10A may be installed in the ground 1A, or two, three, or more car stop pole devices 10A may be buried in the ground 1A, and in this case, adjacent car stop pole devices 10A may be connected to each other by a connecting member (not shown). [Explanation of symbols]

[0101] 1 Earth's surface 1A underground 2 Ground 3 Roadbed 4. Paving 5 Mortar part 10 Car stop pole 10A Car stop pole device 11 Cylinder 11a Lower end 11b Upper end 11c Cap 20 Reinforcement device 20a bottom end 20b top end 21 Outer cylinder 21a Corner 21b side 21c central part 22 Inner tube 22a Corner 22b side 23 Lid 31 Strong reinforcement section 32 Weak reinforcement 33 Boundary 35 Expected bending point 36 Surface forecast line 37 Expected collision point 40 Pressing tool

Claims

1. A vehicle stop pole including a cylindrical body partly embedded in the ground; and a slender reinforcing device provided within the cylindrical body of the vehicle stop pole, The reinforcing device includes an outer cylindrical body and an inner cylindrical body mounted within the outer cylindrical body, the reinforcing device has a strong reinforcing portion including both the external cylindrical body and the internal cylindrical body, and a weak reinforcing portion located below the strong reinforcing portion and including only one of the external cylindrical body and the internal cylindrical body, This vehicle stop pole device has a ratio of the length of the strong reinforcement portion to the length of the weak reinforcement portion of 70:30 to 95:

5.

2. 2. The vehicle stop pole device according to claim 1, wherein the outer cylindrical body has the same bending rigidity along the longitudinal direction, and the inner cylindrical body has the same bending rigidity along the longitudinal direction, whereby the strong reinforcement portion has a greater bending rigidity than the weak reinforcement portion.

3. The reinforcing device is housed within the vehicle stop pole over the entire length in the longitudinal direction, The upper end of the reinforcement device is located at a predicted collision point of the vehicle, 3. The vehicle stop pole device according to claim 1, wherein a lower end of the reinforcing device is located at a point where the vehicle stop pole is expected to bend in the event of a vehicle collision.

4. 3. The vehicle stop pole device according to claim 1, wherein said outer cylindrical body and said inner cylindrical body are both rectangular cylindrical bodies.

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