JP2000282428A - Car stop elastic column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a damage to a walker and a vehicle as small as possible when the walker collides erroneously with the vehicle or the vehicle merely touches the walker, and suppress the entry of the vehicle effectively. SOLUTION: A rigid core column 4 is inserted midway into a hollow part 3 of an elastic synthetic resin hollow outer sheath body 2, and an outer sheath holding body 6 is provided between the rigid core column 4 and the outer sheath body 2 at the lower part of the hollow part 3 so as to hold the outer sheath body 2 integrally with the rigid core column 4. Also foaming elastic material 5 is filled into the upper part of the hollow part 3, and a fixing part 7 is installed on the lower part of the rigid core column 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bollard elastic pillar used for marking a separation line between upper and lower roadways or a boundary between a laneway and a sidewalk, and for marking a bollard partition in a park or a street.

[0002]

2. Description of the Related Art As a conventional vehicle stoppost of this type,
Generally, stone pillars, concrete pillars and the like are used.

[0003] In the case of a columnar body having such a large rigidity, a pedestrian who accidentally collides with a pillar may be seriously damaged, and may be broken or damaged by a large impact such as a vehicle collision. There has been a risk of causing harm due to scattering of debris, and also a problem that the car side is seriously damaged.

In order to solve the above problem, the present applicant has disclosed an inner layer body formed by joining a coil spring on a metal pipe and an outer layer thereof, as described in Japanese Utility Model Publication No. 6-45450. We have proposed a safety post that is a safety post composed of a combination of a covered hollow sheath made of elastomer and an elastomer cushioning part in which the top of the post is hollow.

The pillar having the above-mentioned structure has a soft and soft touch feeling as it goes upward, so that safety against pedestrians can be ensured. That is, the danger that the vehicle can get over the pillar and cause harm to the surroundings in the event of a collision can be effectively suppressed.

[0006]

However, in the above-mentioned post, since the coil spring is used, the cost is high, and the lower part of the post, which can be contacted by a vehicle or the like, has a metal inside the exterior part made of elastomer. Since the pipes are in contact with each other, the elasticity of the elastomer cannot be sufficiently exhibited, and there is a problem that a vehicle contacted at a low speed may be damaged.

As an improved cushioning property for pedestrians and vehicles, as disclosed in Japanese Patent Application Laid-Open No. 9-279535, a hollow synthetic resin column is covered with a hollow synthetic resin elastic core column. There is known a bollard elastic strut having a structure in which a hollow portion formed between a strut and a synthetic resin elastic core pillar is filled with an elastic foam material.

[0008] However, the strut having such a structure does not have sufficient strength to withstand a vehicle collision due to the use of the elastic core post, and the strut of this type is effective in invading the vehicle. However, there is a problem that the function of suppressing the temperature is not sufficient.

Therefore, in the present invention, when a pedestrian collides erroneously or the vehicle merely comes into contact, the damage to each of the pedestrians is reduced as much as possible, and the approach of the vehicle and the like is effectively prevented. It is an object of the present invention to provide an elastic pillar (hereinafter abbreviated as “elastic pillar”) that can be effectively suppressed.

[0010]

In order to achieve the above object, an elastic column according to the present invention has a rigid core post inserted halfway into a hollow portion of a hollow sheath made of synthetic resin having elasticity. The exterior body is integrally held by the rigid core pillar by interposing the exterior body holding body between the rigid core pillar and the exterior body at the lower part, and the upper part of the hollow part is filled with a foamed elastic material, , A fixing portion is provided at a lower portion.

That is, according to the present invention, an exterior body holding body is provided as a spacer between the rigid core pillar and the exterior body at a lower portion of the exterior body with which the vehicle can come into contact, and a space is formed between the two. When the vehicle or the like makes contact, the exterior body of the contact area can be bent to the space part, exhibiting excellent cushioning properties, and filling the upper part of the exterior body that is easy for pedestrians etc. to contact with foam elastic material Thus, damage to both the vehicle and the pedestrian is minimized.

Further, since the core pillar itself is used with rigidity, entry of the vehicle can be effectively suppressed.

The space portion can be left as a space as it is, or it can be filled with an appropriate material if the exterior body can be bent.

The shape of the exterior body holder is not particularly limited as long as it can function as a spacer. For example, one of the disc-shaped ones may be used to form a rigid core column and an exterior body. It can be interposed between the body. Furthermore, if two or more members are interposed at appropriate intervals, the exterior body can be held in a more stable state.

The space thus formed can be left as a space as it is, or if the foamed elastic material filled in the upper portion of the hollow portion is filled up to the space portion as described above, the structure can be improved. It is possible to obtain an elastic column that is integrally integrated.

Regarding the material of the exterior body holding member, a rigid material should be used when the exterior body holding member is arranged at a place where there is no possibility of contact with a pedestrian or a vehicle, for example, at a lower end portion of the exterior body. In such a case, the exterior body can be firmly held.

In the case where an elastic material is used as the material of the exterior body holding member, the space between the exterior body and the rigid core pillar is filled instead of the space portion because the exterior body holding member does not prevent the curvature of the exterior body. Such a cylindrical body can be used. In this case, a larger external force can be reduced as compared with the case where the space is left as it is.

In particular, when a non-foamed elastic material is used as the elastic material, a larger external force can be effectively relieved, and the plastic material is less likely to be plastically deformed than the foamed elastic material and has excellent restorability. As a result, the exterior body is held integrally with the rigid core pillar, and the exterior body is deformed even when external force is repeatedly applied, or a gap is generated between the exterior body and the rigid core pillar, and the exterior body is shaky. Nothing.

In the case where a cylindrical body made of an elastic material is used as the exterior body holding body, it is also possible to use an exterior body holding body in which a space is left in a part. In this case, as a form of the exterior body holding body, a space portion is formed inside the exterior body holding body such as a honeycomb shape, or a plurality of protrusions or projections are formed on the surface of the exterior body holding body. Thereby, it is possible to form a space between the exterior body and the exterior body holder.

As described above, if the space portion is formed in the outer package holding member, in addition to the advantage of using the above-mentioned elastic material or non-foamed elastic material, the shape and size of the space portion can be changed. There is an advantage that the cushioning property can be easily adjusted.

As a method of forming the outer package holder, a liquid composition is used in which a rigid core pillar is inserted into the outer package, the foamed elastic material composition is filled and foamed, and then the outer package holder is formed thereon. Can be used to fill the exterior body and cure.

It is also possible to adopt a method in which an exterior body holder molded in an appropriate shape in advance is used, and the molded exterior body holder is interposed between the rigid core post and the exterior body. By doing so, it is possible to adopt a configuration in which the exterior body is integrally held by the rigid core column.

If a method of pre-molding the outer package holder is adopted, a device for holding the rigid core column until the liquid composition is cured to form the outer package holder becomes unnecessary, and the outer package is not required. It is possible to form foamed elastic materials of various shapes corresponding to the shape of the holder.

In addition, as the exterior body holding member, besides being capable of being molded separately from the rigid core column and then being packaged on the rigid core column, a member integrally molded on the outer periphery of the rigid core column may be used. .

By applying this method, for example, a cylindrical body made of a non-foamed elastic material as the exterior body holding body, whose height is extended to above the rigid core column, is previously formed. After being interposed between the exterior body and the rigid core post,
If the foamed elastic material composition is foamed, it is possible to form an intermediate portion made of a foamed elastic material and a non-foamed elastic material between the upper and lower portions of the hollow portion.

Since the intermediate portion thus formed has a greater restoring force than the foamed elastic material alone, it prevents the upper portion of the outer case from being excessively bent when a relatively large external force is applied to the upper portion of the outer case. It has the effect of doing.

As another method for preventing excessive bending of the upper part of the exterior body, a method of extending a non-foamed elastic core column above the rigid core column can be adopted. By adopting such a configuration, the upper part of the outer body can be secured by the restoring force of the non-foamed elastic core column when a relatively large external force is applied to the upper part of the outer body while securing a soft contact feeling by the foamed elastic material. Excessive bending can be prevented.

In this case, for joining the non-foamed elastic core column and the rigid core column, the non-foamed elastic core column is formed into a column shape or a cylindrical shape, and is fitted to the top of the rigid core column. Can be fixed using an adhesive according to the conditions.

Further, if a non-foaming material having a waterproof property is used as the outer casing holder and the lower end opening of the outer casing is closed, it is possible to effectively prevent rainwater or the like from entering the interior of the outer casing. It is possible to prevent the generation of rust on the rigid core column and the deterioration of the constituent material of the elastic column, and to obtain a hygienic elastic column.

The rigid core column used in the present invention can be used without any particular limitation as long as it has high rigidity and is non-flexible. Specifically, a metal pipe or columnar column can be used. A body or the like can be exemplified.

A fixed portion is formed below the rigid core post, and the elastic column is firmly fixed to the ground by the fixed portion. As the structure of the fixing portion, a known structure can be used without any particular limitation. For example, the rigid core column may be extended and buried in the ground, or a flange may be provided under the rigid core column. And the flange can be fixed to the ground surface with bolts or the like.

As the elastic synthetic resin used for the outer package, a resin having excellent weather resistance, aging resistance and cushioning property and having high toughness is preferable. As a specific characteristic value, it is preferable that the JIS A type hardness is 80 to 95 as the cushioning property.

If the hardness is less than 80, the surface of the exterior body may be easily scratched, and the hardness may be less than 95.
If it is larger than this, the cushioning property cannot be secured. Further, as toughness, JIS K 7311
Is preferably 15 N / mm ² or more.

As a material satisfying such characteristics, E
Elastomers such as PT (ethylene / propylene / diene monomer terpolymer) and polyurethane rubber can be used as appropriate. Above all, if a thermoplastic elastomer is used, the same injection molding or extrusion molding as that of a thermoplastic resin becomes possible, and the production of an exterior body is easy, and an elastic column excellent in productivity can be obtained.

When a non-foamed elastic material is used for the outer case holder, it is preferable that the material has excellent aging resistance, cushioning properties and high toughness. Elastomers can be used, but it is particularly preferable to use thermosetting elastomers having excellent resilience in order to maintain good cushioning against repeated large external forces.

As a specific characteristic value, it is preferable that the JIS A type hardness is 70 to 95 as the cushioning property. If the hardness is less than 70, a large external force may not be able to be counteracted, and if the hardness is more than 95, the cushioning property is reduced. Further, as toughness, the tensile strength in JIS K 7312 is 1
It is desirable that it be 5 N / mm ² or more.

Regarding the material used for the non-foamed elastic core column, any of the above-mentioned thermoplastic or thermosetting elastomers can be used without any particular limitation.

Further, as the foamed elastic material, it is possible to use a foamed material of the same kind as that of the outer package holder, but in order to obtain a soft contact feeling, the specific gravity is 0.15.
It is particularly preferable that it is foamed so as to have a hardness of about 0.25 to about 0.25 and has a hardness of about 45 to 55 as measured by an Asker C hardness meter. In terms of material, polyurethane foam and the like can be suitably used.

[0039]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of an elastic column according to the present invention. The elastic column 1 includes an exterior body 2, a rigid core pillar 4 partially inserted into a hollow portion 3 in the exterior body 2, a foamed elastic material 5 filled in an upper portion of the hollow portion 3 of the exterior body 2, An exterior body holder 6 interposed between the exterior body 2 and the rigid core column 4 at a lower portion of the hollow portion 3;
The rigid core column 4 is fixed to an installation place by burying a fixing portion 7 extending downward in the ground.

An example of a method of manufacturing the elastic column 1 according to the present embodiment will be described. First, a covered cylindrical outer package 2 is formed by injection molding using a thermoplastic polyurethane elastomer.

On the other hand, a steel pipe is used as the rigid core post 4, and the non-foamed thermosetting polyurethane elastomer composition is placed on the upper outer periphery of the rigid core column 4 with the rigid core column 4 set in a mold. As a raw material, a cylindrical exterior body holder 6 having an outer diameter capable of fitting into the hollow portion 3 of the exterior body 2 is integrally formed. In addition, a plurality of projections 8 are formed on the outer peripheral surface of the rigid core pillar 4 on which the outer package holder 6 is formed in order to prevent the outer package holder 6 from falling off.

The exterior body holder 6 formed as described above
The hollow portion 3 of the exterior body 2 in which the attached rigid core column 4 is turned upside down
The exterior body 2 is integrally held by the rigid core column 4 by fitting the exterior body holding body 6 into the lower part of the hollow portion 3. Thereafter, a foamed polyurethane elastomer composition is injected from a pipe portion of the rigid core pillar 4, and foamed and cured to form a foamed elastic material 5.

After the injection of the foamed polyurethane elastomer, the inside of the pipe of the rigid core column 4 is closed using a stopper made of a transparent material (not shown), and the inside of the pipe is filled with the foamed elastic material. Preventing. At this time, the foam elastic material 5
The degree of foaming can be confirmed through a transparent stopper, so that the occurrence of defects can be prevented beforehand.

The outer circumferential surface of the upper part of the exterior body 6 has an annular groove 10 for attaching a reflective tape for securing visibility at night.
Are formed. If a reflective tape is adhered to the annular groove 10, the adhered reflective tape is hardly peeled off, and there is no possibility that the appearance of the elastic column 1 is impaired.

FIG. 2 is a process chart showing another method of manufacturing the elastic column 1. In the figure, first, the cover 2 having a closed cylindrical shape formed by injection molding in FIG.
The rigid core column 4 is inserted into the hollow portion 3 and the hollow column 3 is held by the core column holding device A while maintaining the state where the rigid core column is inserted.
The foamed polyurethane elastomer composition is poured into the mixture, and foamed and cured to form a foamed elastic material 5.

Next, on the foamed elastic material 5 filled in the hollow portion 3 in (b), a non-foamed thermosetting polyurethane elastomer is further injected and cured to form the outer package holding member 6, and Then, the elastic column 1 is obtained by removing the core column holding device A in (c).

FIG. 3 is a cross-sectional view showing a second embodiment of the elastic column according to the present invention. In this elastic column 1, the outer package holder 6 is formed higher in the height direction than the elastic column 1 in FIG.
And has a structure in which a foaming elastic material is filled in the center of the protruding exterior body holder 6.

In the elastic column 1 using the outer package holder 6, the hollow portion 3 is formed with an intermediate portion 9 comprising the non-foamed elastic material and the foamed elastic material 5 constituting the outer package holder 6. Therefore, in the upper part of the exterior body 2, while a soft contact feeling is ensured by the foamed elastic material 5, when a relatively large external force is applied, the exterior body 2 becomes excessively strong due to the restoring force of the intermediate portion 9. It is possible to prevent bending.

FIG. 4 is a sectional view showing an elastic column according to a third embodiment of the present invention. The elastic column 1 has a configuration in which a non-foamed elastic core column 11 is further provided above the rigid core column 4 in addition to the configuration of the elastic column 1 in FIG. That is, the columnar non-foamed elastic core 11 made of polyurethane elastomer is fitted into the pipe of the rigid core 4 and fixed with an adhesive.

The elastic column 1 having the above-described structure is similar to the elastic column 1 shown in FIG. 2 in that when a relatively large external force is applied to the upper portion of the outer case 2, the outer case 2 is formed by the non-foamed elastic core 11. This is to prevent excessive bending.

FIG. 5 is an enlarged sectional view of a main part of a fourth embodiment of the elastic column according to the present invention. This elastic column 1
Is a cylindrical body made of a non-foamed thermosetting polyurethane elastomer which is sheathed on the rigid core column 4 and has a plurality of annular projections 12 formed on the outer periphery thereof. ing.

When the elastic column 1 having the above structure is used, a space 13 is formed between the adjacent annular projections 12 on the outer package holding member 6, and the cushioning property of the elastic column 1 can be adjusted. Moreover, since the thermosetting elastomer having excellent restoring force is used, it is possible to obtain the elastic column 1 which can quickly return to the original state as soon as the external force is eliminated.

As shown in FIG. 6, the space 13 formed in the outer package holder 6 has a plurality of through-holes 14 arranged in the height direction (vertical direction) through the interior of the outer package holder 6. It is also possible to use.

FIG. 7 is an enlarged sectional view of a main part showing a sixth embodiment of the elastic column according to the present invention. This elastic column 1
The outer body holding body 6 composed of two flange-shaped members 15 that are exteriorly mounted on the rigid core column 4 is used, and a plurality of cutouts 17 are formed in the flange 16 of the flange-shaped member 15. The space 13 formed between the flange members 15, 15 is filled with a foamed elastic material 5.

In order to fill the space 13 with the foamed elastic material 15, the rigid core column 4 with the exterior body holder 6 attached is inserted into the exterior body 2, and the composition of the foamed elastic material 5 is foamed. It should be done. In the foaming process, the foamed elastic material 5 composition is filled in the space 13 through the cutout 17 formed in the flange 16 of the flange-shaped member 15.

FIG. 8 is an enlarged sectional view of a main part showing a seventh embodiment of the elastic column according to the present invention. This elastic column 1
Uses an exterior body holder 6 made of one flange-shaped member exteriorly mounted on the rigid core column 4, and the exterior body holder 6 is arranged so as to close the lower end opening of the exterior body 2. . The inside of the hollow portion 3 closed by the outer package holder 6 is entirely filled with the foamed elastic material 5.

As the outer package holder 6 in this embodiment, an epoxy resin which is a non-foaming material having waterproofness is used, and ribs are provided on the inner peripheral edge and the outer peripheral edge of the flange portion 16, respectively. 19 and 20 are formed. The rib 1
Since an adhesive is applied between the rigid body 9 and the rigid core pillar 4 and between the rib 20 and the exterior body 2 and the exterior body holding body 6 is formed of a strong epoxy resin, Are firmly and integrally held by the rigid core column 4.

If the elastic column 1 having such a configuration is used,
It is possible to effectively prevent rainwater or the like from entering the exterior body 2 from the lower end portion of the exterior body 2.

FIG. 9 is an enlarged sectional view of an essential part showing an eighth embodiment of the elastic column according to the present invention. This elastic column 1
Has the same configuration as that of the elastic column 1 shown in FIG.

That is, in the present embodiment, a flange-shaped member composed of only the thick flange 16 is used as the exterior body holder 6, and the inner peripheral surface 21 and the outer peripheral surface of the flange 16 are used. 22 by applying an adhesive to the exterior body 2.
Are firmly and integrally held by the rigid core column 4.

[0061]

As is apparent from the above description, according to the present invention, the rigid core post is inserted halfway into the hollow portion of the outer casing, and the outer casing is inserted between the rigid core post and the outer casing below the hollow portion. The exterior body is integrally held by the rigid core pillar by interposing the body holder, and the upper part of the hollow part is filled with foamed elastic material, so that pedestrians etc. may accidentally collide or the vehicle may simply In the case of only contact, the damage to each of them can be kept as small as possible and the entry of the vehicle can be effectively suppressed because the rigid core pillar is used.

When an elastic material is used as the exterior body holding member, it is possible to use a cylindrical body that completely fills the space between the exterior body and the rigid core pillar, and it is possible to reduce a large external force. It becomes possible.

In particular, when a non-foamed elastic material is used as the elastic material, a larger external force can be effectively relieved, and the plastic material is less likely to be plastically deformed than the foamed elastic material and has excellent restorability. As a result, the exterior body is held integrally with the rigid core pillar, and the exterior body is deformed even when external force is repeatedly applied, or a gap is generated between the exterior body and the rigid core pillar, and the exterior body is shaky. Nothing.

Further, if a non-foaming material having waterproofness is used as the outer case holding member and the lower end opening of the outer case is closed, it is possible to effectively prevent rainwater or the like from entering the inside of the outer case. It is possible to prevent the generation of rust on the rigid core column and the deterioration of the constituent material of the elastic column, and to obtain a hygienic elastic column.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an elastic column according to the present invention.

FIG. 2 is a process chart showing another method of manufacturing the elastic column in FIG.

FIG. 3 is a cross-sectional view showing a second embodiment of the elastic column.

FIG. 4 is a sectional view showing a third embodiment of the elastic column.

FIG. 5 is an enlarged sectional view of a main part showing a fourth embodiment of the elastic column.

FIG. 6 is an enlarged sectional view of a main part showing a fifth embodiment of the elastic column.

FIG. 7 is an enlarged sectional view of a main part showing a sixth embodiment of the elastic column.

FIG. 8 is an enlarged sectional view of a main part showing a seventh embodiment of the elastic column.

FIG. 9 is an enlarged sectional view of a main part showing an eighth embodiment of the elastic column.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elastic pillar 2 Exterior body 3 Hollow part 4 Rigid core pillar 5 Foam elastic material 6 Exterior body holder 7 Fixed part 8 Projection 9 Intermediate part 11 Non-foamed elastic core pillar 12 Annular projection part 13 Space part 14 Through-hole 15 Flange member 16 Flange 17 Notch 19, 20 Rib 21 Flange inner peripheral surface 22 Flange outer peripheral surface

Claims (4)

[Claims] 1. A rigid core post is inserted halfway into a hollow portion of an elastic synthetic resin hollow exterior body, and an exterior body holder is inserted between the rigid core post and the exterior body at a lower portion of the hollow portion. An elastic pillar having a rigid core pillar, wherein an exterior body is integrally held by a rigid core pillar, an upper portion of a hollow portion is filled with a foamed elastic material, and a fixed portion is provided below the rigid core pillar. 2. The bollard elastic column according to claim 1, wherein said exterior body holding body is made of an elastic material. 3. The bollard elastic pillar according to claim 2, wherein said exterior body holder is a non-foamed material. 4. The bollard elastic column according to claim 1, wherein said exterior body holding body is made of a waterproof non-foamed material, and is arranged so as to close a lower end opening of said exterior body.