JP4164281B2 - Stop column structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stop columnar structure that is installed at an entrance of a park, a promenade or the like, or at a boundary between a roadway and a sidewalk, and is used to prevent an automobile from entering the park or the like.
[0002]
[Prior art]
As shown in FIG. 5, as a conventional general stop columnar structure of this type, as shown in FIG. 5, a support 11 such as a metal pipe that is erected with its lower part buried under the ground, a ground exposed portion of the support 11, and its ground A core layer 13 made of foamed urethane foam that is covered with a coil spring 12 that extends upward by fitting and holding the lower end portion of the exposed portion, and covers the outer surface of the core layer 13 And an outer skin 14 made of an elastic material such as rubber, thermoplastic polyurethane, and thermoplastic olefin. The support 11 is an insert material, and the outer skin 14 and the core layer 13 are integrated so that no internal displacement or the like occurs. The one produced by molding is known.
[0003]
Since the above-described conventional general car stopper columnar structure is formed by integrally forming the skin 14 and the core layer 13, the skin 14 and the core layer 13 are disposed at the time of disposal after use of the product (car stopper columnar structure). Therefore, it is difficult to separate and separate the foamed urethane waste material that forms the core layer 13.
[0004]
In addition, as a constituent material of the core layer 13 in the above-described conventional general stop columnar structure, for example, a waste material such as a burr generated at the time of manufacturing a urethane molded product such as a urethane mattress or a seat cushion, or a used urethane molded product is used. It has also been proposed to recycle the chip material that has been pulverized. More specifically, an adhesive is mixed with waste materials such as burrs or chip materials obtained by pulverizing used urethane molded products, a core layer of a predetermined shape is molded by heat molding, and the core layer is covered with a skin. A stop column structure has been proposed.
[0005]
[Problems to be solved by the invention]
In the car stop columnar structure using the core layer made of the chip material as described above, it is possible to mold different hardness by adjusting the input amount (mixing amount) of the chip material at the time of mold heat molding, While it has the advantage that it is easy to adjust the shock absorption performance in a wide range according to the situation of the application and installation location, it has strength because it is excessively excellent in shock absorption when external impact is applied such as vehicle contact It is weak and it cannot secure the original vehicle stop function of the columnar structure. In addition, in order to prevent displacement of the skin and the core layer made of the chip material against impact and to secure the surface hardness, it is necessary to bond both together using an adhesive. As a result, the product (car stop columnar structure) ) At the time of disposal after use, there was a problem that the epidermis and the core layer could not be separated and separated, and the waste material of the chip material forming the core layer could not be recycled again.
[0006]
The present invention has been made in view of the above circumstances, and the impact absorption performance can be improved by using the chip material, and the strength and surface hardness can be adjusted, and the product can be recycled while maintaining the landscape performance. The purpose is to provide a stop columnar structure that can increase the rate and contribute to environmental protection.
[0007]
[Means for Solving the Problems]
In order to achieve the above-described object, the stop columnar structure according to the present invention absorbs an impact from the outside by being supported by a pillar that is erected with the lower part buried under the ground and an exposed part of the pillar on the ground. And a stop columnar structure comprising a core layer that covers the outer surface of the core layer,
The upper half of the core layer is composed of a chip material core layer formed to have an outer diameter larger than the inner diameter of the skin by thermoforming a chip material obtained by pulverizing foaming waste material. By fitting the above-mentioned skin into the press-fit state on the outer periphery of the upper half core layer, both are integrated without using an adhesive ,
The lower half of the core layer is formed from a core layer made of a foamed resin material formed integrally with the skin by injection foaming of the foamable resin material into the lower part in the skin,
The upper half core layer made of the chip material is formed in a length that occupies a range of 40 to 65% of the total length of the core layer .
[0008]
Here, the chip material for forming the core layer made of the chip material may be a rubber sponge or a foamable resin material, but a material obtained by pulverizing a waste material of soft foamed urethane is particularly preferable.
[0009]
According to the present invention having the above-described configuration, conventionally used elastic materials such as rubber, thermoplastic polyurethane, thermoplastic olefin and the like are used as the skin material, while the upper half core layer is a foamed molded product. By recycling and using waste materials such as burrs that are sometimes generated or chip materials formed by pulverizing used foamed molded products, the impact absorption performance of the products can be improved while maintaining the landscape performance. In addition, by adjusting the input amount (blending amount) of the chip material forming the upper half core layer, it is possible to appropriately adjust the strength and surface hardness in accordance with the situation of use and installation location. . In addition, the outer diameter of the upper half core layer made of the chip material is made larger than the inner diameter of the skin, and the skin is pressed into the outer periphery of the core layer to fit together, so that the skin and the core layer are not used with an adhesive. , It is easy to separate the skin from the core layer at the time of disposal after use of the product, and the waste material of the chip material for forming the core layer is the same as the core layer material of the same columnar structure for car stops or other It becomes possible to recycle the product made of the chip material again, and by improving the recycling rate, it is possible to reduce the discarded amount of the foamable waste material and contribute to environmental protection.
[0010]
Further, the upper half of the core layer is formed from the core layer made of the above chip material, and the lower half is made of a foamed resin material integrally formed with the skin by injection foaming of the foamable resin material into the skin. Constructing a two-layer structure with upper and lower layers, such as a core layer, achieves conflicting demands such as improving shock absorption performance and securing the impact resistance required to demonstrate the original vehicle entry prevention function Can be made.
[0011]
Further, the bollard columnar structure having a core layer of the upper and lower two-layer structure as described above, as a foamable resin material for forming the lower half core layer, as claimed in claim 3, use of water in the blowing agent However, by adopting a non-fluorocarbon blended catalyst that uses a foamed resin catalyst as the catalyst, a non-fluorocarbon-blown foamable resin material whose liquid flowability tends to deteriorate because the reaction heat is higher than that of a fluorocarbon blended catalyst. While using this material, it is possible to flow this material uniformly over the entire lower half core layer, and to obtain a high-quality and high-performance product without incurring quality and performance degradation due to the occurrence of a lack of thickness, etc. Can do.
[0012]
Further, the bollard columnar structure having a core layer of the upper and lower two-layer structure as described above, the switch-up material made on half core layer was formed to a length that occupies the range 40-65% of the core layer full length Therefore , it is possible to smooth the change in the deflection characteristics of the columnar structure with respect to the impact load, and to further improve the impact absorption performance and improve the durability. This will be clarified by an experimental example described later.
[0013]
Furthermore, in the vehicle stop columnar structure having the core layer having the upper and lower two-layer structure as described above, a configuration in which the coil spring is built in the upper position in the lower half core layer as described in claim 4 is adopted. As a result, it is possible to improve the durability by further improving the shock absorbing performance at the time of impact from the outside and preventing local breakage due to sudden bending.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall semi-longitudinal sectional view showing a stop columnar structure according to the present invention. This stop columnar structure A is formed by embedding a lower half portion 1b having a retaining anchor 4 under the ground. A support 1 made of a metal pipe, and a coil spring 5 that extends upward by fitting and holding the lower end of the support 1 on the ground exposed upper half 1a and the upper end of the ground exposed upper half 1a. A core layer 2 that is crowned and absorbs impact from the outside, and urethane rubber, thermoplastic olefin, or heat which covers the entire outer surface of the core layer 2 and has a reflective tape 6 wound and bonded near the upper end of the outer peripheral surface And a skin 3 made of an elastic material such as plastic polyurethane.
[0015]
The upper half 2A of the core layer 2 is formed separately from the skin 3 using a chip material obtained by pulverizing a waste material of a soft foamed urethane foam. More specifically, the waste material is washed, pulverized into chips, mixed with an adhesive (binder), and molded by heating, so that it has a predetermined shape and its outer diameter is larger than the inner diameter of the skin 3. Also, an upper half core layer 2A having a size about 5% larger is formed. At the time of mold heat molding, the surface hardness is adjusted to a value corresponding to the use of the product A, the situation of the installation location, etc. by changing the input amount (blending amount) of the chip material.
[0016]
By fitting the outer skin 3 into the outer periphery of the upper half core layer 2A made of a chip material so as to have an outer diameter larger than the inner diameter of the outer skin 3 as described above, the upper half core layer 2A and The skin 3 is fixed and integrated without an adhesive. On the other hand, the lower half 2B of the core layer 2 is formed of a foamable urethane resin core layer integrally formed with the skin 3 by injection foaming of the foamable urethane resin material into the inner and lower portions of the skin 3. Here, as the foamable urethane resin material forming the lower half core layer 2B, a non-fluorocarbon blended material using water as a foaming agent and using a foamed resinification catalyst as a catalyst is used.
[0017]
As shown in FIG. 1, the car stop columnar structure A configured as described above is used for retaining the support column 1 in a vertical hole H excavated and formed in a road surface R at the entrance of a park or a promenade or a boundary between a roadway and a walkway. With the lower half portion 1b having the anchor 4 inserted, the concrete layer C is poured into the vertical hole H and the support column 1 is secured and fixed, so that the core layer 2 and the skin 3 are installed on the road surface R in a vertical standing posture. It is used to prevent cars from entering the park. In such a use mode, when a vehicle comes into contact with the vehicle stop structure A or a pedestrian collides, the collision force is received by the strong lower half core layer 2B to ensure the original vehicle entry prevention function, The impact force is absorbed by bending deformation of the upper half core layer 2A to suppress the damage of the car and the injury of the pedestrian as much as possible. In addition, the restoring force of the coil spring 5 works with the separation of the car or pedestrian and elastically restores to the vertical standing posture to restore a predetermined vehicle entry preventing function.
[0018]
Here, in the stop columnar structure A of the present invention, an elastic material such as urethane rubber, thermoplastic olefin, and thermoplastic polyurethane conventionally used as the material of the skin 3 is used, and the core layer 2 has an impact. In the upper half 2A where the force acts most strongly, waste materials such as burrs generated during the manufacture of soft foamed urethane molded products or chip materials made by pulverizing used foamed urethane molded products are recycled and the lower half By adopting a two-layer structure that uses foaming urethane resin material, which is stronger than the chip material, in 2B, it is necessary to maintain the landscape performance and to exhibit the original functions of the car stopper columnar structure A. While ensuring the impact strength, the product cost (the cost of the entire car stopper columnar structure A) can be reduced, and the upper half core layer 2A is bent and deformed. A synergistic impact dispersing action of the chip material itself forming the part core layer 2A, it is possible to exhibit excellent shock absorbing capacity.
[0019]
In addition, by adjusting the input amount (mixing amount) of the chip material that is recycled when the upper half core layer 2A is heat-molded, the strength and surface hardness of the upper half core layer 2A can be changed depending on the use and installation location. It is possible to adjust appropriately corresponding to. In addition, the outer diameter of the upper half core layer 2A made of chip material is made larger than the inner diameter of the skin 3 so that the outer skin 3 is press-fitted into the outer periphery of the core layer 2A, and the lower half is blended with non-Freon By forming a foamable urethane resin core layer 2B integrally formed with the skin 3 by injection foaming of the foamable urethane resin material, the skin 3 and the upper half core layer 2A do not use an adhesive. However, since it is fixed and integrated so as not to be displaced at the time of impact, the skin 3 and the upper half core layer 2A can be easily separated at the time of disposal after use of the product, Improve the waste material recycling rate, such as recycling the scrap material of the chip material for forming the upper half core layer 2A again to the core layer material of the same columnar structure for car stops or other chip material products. Ri, can contribute to environmental protection by reducing the 捨棄 amount of effervescent waste.
[0020]
Furthermore, as the lower half core layer 2A, a non-fluorocarbon-containing foaming urethane resin material using water as a foaming agent and using a foamed resinification catalyst as a catalyst is used. Compared to the case, a non-fluorocarbon foaming urethane resin material whose liquid flowability is deteriorated due to high reaction heat is used, but this material is uniformly flown over the entire area of the lower half core layer 2B. High quality and high performance products can be obtained without degrading quality and performance due to meat generation.
[0021]
In the vehicle stop columnar structure A having the core layer 2 having the upper and lower two-layer structure shown in the above embodiment, the upper half core layer 2A made of a chip material has a total length (ground height) L of the core layer 2. The length l1 occupying a range of 40 to 65%, that is, the lower half core layer 2B made of a foamable urethane resin is formed to have a length l2 (ground height) occupying a range of 60 to 35% of the total length L of the core layer. It is . When a specific example is demonstrated, when the core layer full length L is 800 mm, it sets to the range of l1: 320-520 mm (l2: 480-280 mm) .
[0022]
2 to 4 are books in which the length l1 of the upper half core layer 2A made of the chip material is set to 500 mm (l2 = 300 mm) and 400 mm (l2 = 400 mm) when the total length L of the core layer 2 is 800 mm. Two prototypes corresponding to the invention, a reference example in which the length l1 is set to 200 mm (l2 = 600 mm) and the conventional general product shown in FIG. 5 when an impact (compression) load (kN) is applied from the outside. It is a load-deflection characteristic figure which shows the result of having measured the change of deflection amount (mm). As is clear from these characteristic diagrams, even when the same impact load is applied, the bending amount B of the two prototypes corresponding to the present invention and the reference example is smaller than the bending amount A of the conventional product. In particular, in the case of a prototype in which l1 is set to 500 mm and 400 mm, the change curve of the deflection amount with respect to the impact load becomes smooth, and the outer diameter of the core layer 2A is made larger than the inner diameter of the outer skin 3 so that the outer skin 3 becomes the core layer. Even if it is pressed into 2A and integrated without using an adhesive, smooth bending deformation and bending strength similar to those integrated with adhesive can be secured, and it is excellent in a wide load range. In addition, it was confirmed that it was possible to improve the durability without damaging the local area due to sudden bending and exhibiting excellent shock absorbing performance.
[0024]
【The invention's effect】
As described above, the present invention uses a conventionally used elastic material such as rubber, thermoplastic polyurethane, and thermoplastic olefin as a skin material, while producing a foamable molded product as all or part of the core layer. By using chip materials made by pulverizing waste materials such as burrs that sometimes occur or waste materials of used foamed molded products, it is possible to improve the impact absorption performance of the product while maintaining landscape performance . Further, by adjusting the input amount (blending amount) of the chip material forming the upper half of the core layer, the strength and surface hardness can be appropriately adjusted in accordance with the situation of the application and installation location. In addition, the skin and the chip material core layer are fixed and integrated by pressing the skin into the outer periphery of the chip material core layer that is thermoformed to an outer diameter larger than the inner diameter of the skin, and fixing between the two. Therefore, the skin and the chip material core layer can be easily separated at the time of disposal after use of the product, so that the waste material of the chip material for forming the core layer is the same. It becomes possible to recycle again into the core layer material of the columnar structure for car stops or other chip material products. By improving the waste material recycling rate, the amount of foamable waste is reduced, which greatly contributes to environmental protection. The effect that it can contribute is produced.
[0025]
Further, according to the present invention, the upper half of the core layer is formed from the core layer made of the chip material, and the lower half is integrated with the skin by injection foaming of the foamable resin material into the skin. Since it is formed from a molded core layer made of foamed resin material , in addition to the above effects, it is possible to achieve both improved impact absorption performance and sufficient impact resistance to demonstrate the original function of the car-stop columnar structure. Can be achieved.
[0026]
According to the invention of claim 3 , in addition to the above effect, a non-fluorocarbon blended foaming resin material that deteriorates the liquid flow property is used. Therefore, it is possible to obtain a high-quality and high-performance product without causing deterioration in quality and performance due to the occurrence of a lack of thickness.
[Brief description of the drawings]
FIG. 1 is an overall half-longitudinal sectional view showing a construction state of a car stopper columnar structure according to the present invention.
FIG. 2 is a load-deflection characteristic diagram of a prototype corresponding to the present invention and a conventional product in which the length l1 of the upper half core layer made of the chip material of the above-mentioned car stopper columnar structure is set to 500 mm (l2 = 300 mm). .
FIG. 3 is a load-deflection characteristic diagram of a prototype corresponding to the present invention and a conventional product in which the length l1 of the upper half core layer made of the chip material of the above-mentioned car stopper columnar structure is set to 400 mm (l2 = 400 mm). .
FIG. 4 is a load-deflection characteristic diagram of a reference example and a conventional product in which the length l1 of the upper half core layer made of chip material of the above car-stop columnar structure is set to 200 mm (l2 = 600 mm).
FIG. 5 is an overall half-longitudinal sectional view showing a conventional vehicle stop columnar structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Core layer 2A Chip material upper half core layer 2B Expandable urethane resin material lower half core layer 3 Skin 5 Coil spring A Car stop columnar structure

Claims (4)

A strut having a lower portion embedded under the ground, a core layer that is crowned by the ground exposed portion of the strut to absorb external impacts, and a skin that covers the outer surface of the core layer A stop columnar structure,
The upper half of the core layer is composed of a chip material core layer formed to have an outer diameter larger than the inner diameter of the skin by thermoforming a chip material obtained by pulverizing foaming waste material. By fitting the above-mentioned skin into the press-fit state on the outer periphery of the upper half core layer, both are integrated without using an adhesive ,
The lower half of the core layer is formed from a core layer made of a foamed resin material formed integrally with the skin by injection foaming of the foamable resin material into the lower part in the skin,
The wheel stopper columnar structure characterized in that the upper half core layer made of the chip material has a length that occupies a range of 40 to 65% of the total length of the core layer . 2. The vehicle stop columnar structure according to claim 1 , wherein the chip material forming the core layer made of the chip material is obtained by pulverizing a waste material of urethane foam. The stop columnar structure according to claim 1 or 2 , wherein the foamable resin material forming the lower half core layer uses water as a foaming agent and a foamed resinification catalyst as a catalyst. . 4. The vehicle stop columnar structure according to claim 1, wherein a coil spring is built in an upper position in the lower half core layer.

Images