JPH0671512U - Pile - Google Patents
PileInfo
- Publication number
- JPH0671512U JPH0671512U JP1241893U JP1241893U JPH0671512U JP H0671512 U JPH0671512 U JP H0671512U JP 1241893 U JP1241893 U JP 1241893U JP 1241893 U JP1241893 U JP 1241893U JP H0671512 U JPH0671512 U JP H0671512U
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- Prior art keywords
- pile
- installation hole
- ground
- rubber
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
(57)【要約】
【目的】 設置孔内の水が凍結しても容易に杭を設置孔
から抜脱可能な杭を提供する。
【構成】 地上より露出する地上部１４と、地上に設け
られる設置孔１６へ挿入可能な挿入部１８とから成る杭
１０において、前記挿入部１８は、ゴムで形成、または
硬質部材で形成すると共に該硬質部材をゴムで被覆して
ある。
(57) [Summary] [Purpose] To provide a pile that can be easily removed from the installation hole even if the water in the installation hole freezes. [Structure] In a pile 10 including a ground portion 14 exposed from the ground and an insertion portion 18 that can be inserted into an installation hole 16 provided on the ground, the insertion portion 18 is formed of rubber or a hard member. The hard member is covered with rubber.
Description
【０００１】[0001]
本考案は杭に関し、一層詳細には地上より露出する地上部と、地上に設けられ る設置孔へ挿入可能な挿入部とから成る杭に関する。 The present invention relates to a pile, and more particularly to a pile including an above-ground portion exposed from the ground and an insertion portion that can be inserted into an installation hole provided on the ground.
【０００２】[0002]
従来、例えば駐車場において、夜間無断駐車を排除するために自動車進入路に 杭を立てることが行われている。従来の杭は、金属等の硬質材料で長尺の棒状に 形成され、路面へ立設され上方へ露出する地上部と、路面に予め設けられている 設置孔へ挿入させる挿入部とから構成されている。すなわち、杭の基部である挿 入部を路面の設置孔へ挿入させることにより設置が完了する。駐車場を使用する 場合は、当該杭を設置孔から抜けば自動車の進入が可能となる。 Conventionally, for example, in a parking lot, a stake has been erected on the approach road of a vehicle in order to eliminate unauthorized parking at night. Conventional piles are made of a hard material such as metal in the shape of a long rod, and are composed of an above-ground part that stands upright on the road surface and is exposed upward, and an insertion part that is inserted into an installation hole that is previously provided on the road surface. ing. That is, the installation is completed by inserting the insertion part, which is the base of the pile, into the installation hole on the road surface. When using a parking lot, cars can enter if the pile is pulled out from the installation hole.
【０００３】[0003]
しかしながら、上記の従来の杭には次のような課題がある。 路面に設けられている設置孔は常時上端面が開放されている。そのため設置孔 内には雨水が常時溜まった状態になっている。従って、杭の挿入部は、雨水が溜 まった状態の設置孔へ挿入されて使用されることが多い。 北国において冬季、特に厳寒期にそのような状態で杭を使用すると、設置孔内 の水が凍結し、杭を設置孔から抜脱不能になることがある。例えば夜間、凍結前 に杭を設置孔へ挿入させると、気温の低下と共に設置孔内の水が凍結し、杭を抜 くことができなくなる。その結果、駐車場の開場時刻になっても杭を抜くことが できなくなってしまうという課題がある。気温が低い状態が何日も続くと、その 期間ずっと杭を除去できず、駐車場が使用できなくなってしまう。 従って、本考案は設置孔内の水が凍結しても容易に杭を設置孔から抜脱可能な 杭を提供することを目的とする。 However, the above-mentioned conventional pile has the following problems. The upper end surface of the installation hole provided on the road surface is always open. Therefore, rainwater is always accumulated in the installation hole. Therefore, the insertion part of the pile is often used by inserting it into the installation hole where rainwater is accumulated. If piles are used in northern countries in winter, especially in extremely cold seasons, water in the installation holes may freeze, making it impossible to remove them from the installation holes. For example, if the pile is inserted into the installation hole before freezing at night, the water in the installation hole freezes as the temperature drops and it becomes impossible to remove the pile. As a result, there is a problem that the stake cannot be pulled out even at the opening time of the parking lot. If the temperature is low for many days, the piles cannot be removed and the parking lot becomes unusable for that period. Therefore, an object of the present invention is to provide a pile that can be easily removed from the installation hole even if the water in the installation hole freezes.
【０００４】[0004]
【課題を解決するための手段】 上記課題を解決するため、本考案は次の構成を備える。 すなわち、地上より露出する地上部と、地上に設けられる設置孔へ挿入可能な 挿入部とから成る杭において、前記挿入部は、ゴムで形成、または硬質部材で形 成すると共に該硬質部材をゴムで被覆したことを特徴とする。Means for Solving the Problems In order to solve the above problems, the present invention has the following configuration. That is, in a pile composed of a ground portion exposed from the ground and an insertion portion that can be inserted into an installation hole provided on the ground, the insertion portion is formed of rubber or is formed of a hard member, and the hard member is formed of rubber. It is characterized by being coated with.
【０００５】[0005]
作用について説明する。 挿入部は、ゴムで形成、または硬質部材で形成すると共に該硬質部材をゴムで 被覆してあるので、挿入部が挿入した状態の設置孔内において、水が凍結しても 挿入部へ外力を加えると、ゴム部分は変形可能なので、変形したゴム部分で氷を 破砕可能となる。 The operation will be described. The insertion part is made of rubber or a hard member and the hard member is covered with rubber, so even if water freezes in the installation hole when the insertion part is inserted, an external force is applied to the insertion part. When added, the rubber part can be deformed, so ice can be crushed by the deformed rubber part.
【０００６】[0006]
以下、本考案の好適な実施例について添付図面と共に詳述する。 （第１実施例） 第１実施例について図１と共に説明する。 １０は杭であり、例えば合成ゴム（ネオプレンゴム等）で長尺な棒状に形成さ れている。杭１０は路面１２から露出し、上方へ立設される地上部１４と、路面 １２に予め設置されている設置孔１６へ挿入可能な挿入部１８とから成る。 地上部１４は、自動車の進入を妨げるに十分な高さ（例えば１メートル）に形 成されている。 挿入部１８は、大径部２０と小径部２２から成る。挿入部１８は地上部１４と 共に一体に合成ゴムで形成されている。大径部２０は、設置孔１６の上部である 大内径部２４へ嵌合可能なサイズに形成されている。一方、小径部２２は、設置 孔１６の下部である小内径部２６へ挿入可能なサイズに形成されている。 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. First Example A first example will be described with reference to FIG. Reference numeral 10 denotes a pile, which is made of, for example, synthetic rubber (neoprene rubber or the like) and has a long rod shape. The stake 10 is composed of an above-ground portion 14 that is exposed from the road surface 12 and is erected upward, and an insertion portion 18 that can be inserted into an installation hole 16 previously installed on the road surface 12. The ground portion 14 is formed at a height (for example, 1 meter) sufficient to prevent the entry of a vehicle. The insertion portion 18 includes a large diameter portion 20 and a small diameter portion 22. The insertion portion 18 is integrally formed with the ground portion 14 from synthetic rubber. The large-diameter portion 20 is formed in a size that can be fitted into the large-diameter portion 24 that is the upper portion of the installation hole 16. On the other hand, the small diameter portion 22 is formed in a size that can be inserted into the small inner diameter portion 26 which is the lower portion of the installation hole 16.
【０００７】 上記構成を有する杭１０を使用する場合、挿入部１８の小径部２２を設置孔１ ６の小内径部２６内へ挿入し、挿入部１８の大径部２０を設置孔１６の大内径部 ２４内へ嵌合させる（図１の状態）。大径部２０が大内径部２４内へ嵌合するこ とにより、杭１０を路面１２に安定して立設させることができる。 設置孔１６内に水が溜まっており、杭１０を挿入させた後に当該水が設置孔１ ６内で凍結しても、挿入部１８を形成している合成ゴムは極めて低い温度（例え ば摂氏氷点下６０度位）にならないと著しく硬化しないので、せいぜい摂氏氷点 下２０度位の気温であれば十分な弾力性を保持している。そこで、杭１０を抜く 場合、作業者は地上部１４に外力を加えて杭１０を揺する。すると、挿入部１８ は弾性変形して加えられた外力を、水が凍結して成る氷へ伝達する。この伝達し た力で当該氷を破砕することができる。When using the pile 10 having the above structure, the small diameter portion 22 of the insertion portion 18 is inserted into the small inner diameter portion 26 of the installation hole 16, and the large diameter portion 20 of the insertion portion 18 is expanded to the large diameter portion of the installation hole 16. Fit into the inner diameter portion 24 (state of FIG. 1). By fitting the large diameter portion 20 into the large inner diameter portion 24, the pile 10 can be stably erected on the road surface 12. Even if the water is accumulated in the installation hole 16 and the water freezes in the installation hole 16 after the pile 10 is inserted, the synthetic rubber forming the insertion portion 18 has an extremely low temperature (for example, Celsius). It does not harden significantly until it reaches below freezing (60 degrees Celsius), so it retains sufficient elasticity at temperatures of around 20 degrees Celsius below freezing. Therefore, when pulling out the pile 10, the worker applies an external force to the ground portion 14 to shake the pile 10. Then, the insertion portion 18 elastically deforms and transmits the applied external force to ice formed by freezing of water. This transmitted force can crush the ice.
【０００８】 氷が破砕されると挿入部１８を設置孔１６内に止めようとする物が無くなるの で杭１０を設置孔１６から抜脱することができる。 第１実施例では、設置孔１６に挿入可能な挿入部１８は、上部の大径部２０で 設置孔１６内の大内径部２４へ嵌合可能なので、杭１０を設置孔１６へ挿入後、 降水があったり、散水された場合であっても大径部２０がシール材、またはパッ キンの役目を果たし、設置孔１６内への更なる水の侵入を防止可能になっている 。 また、杭１０全体が合成ゴムで形成されているので、自動車や人間が誤ってぶ つかっても損傷や負傷するのを防止可能になっている。When the ice is crushed, there is no object to stop the insertion part 18 in the installation hole 16, so that the pile 10 can be removed from the installation hole 16. In the first embodiment, since the insertion portion 18 that can be inserted into the installation hole 16 can be fitted to the large inner diameter portion 24 in the installation hole 16 at the large diameter portion 20 at the upper portion, after inserting the pile 10 into the installation hole 16, Even if it is rained or sprinkled with water, the large-diameter portion 20 serves as a sealing material or a packing, and can prevent further water from entering the installation hole 16. Further, since the entire pile 10 is made of synthetic rubber, it is possible to prevent the automobile or a person from being injured or injured by accident.
【０００９】 （第２実施例） 第２実施例について図２と共に説明する。なお、第１実施例と同一の構成部材 については第１実施例と同一の符号を付し、説明は省略する。 第２実施例では、杭１０の地上部１４は金属（例えば鉄）等の硬質部材で形成 されている。一方、挿入部１８は合成ゴムで形成されている。 地上部１４と挿入部１８は、地上部１４の下端に形成されているフランジ状の 連結部２８により互いに抜け止めが図られている。 第２実施例の杭１０における使用方法および設置孔１６内の水が凍結した際の 抜脱方法は第１実施例と同一である。 第２実施例の杭１０は、地上部１４を硬質材料で形成したい環境での使用に適 している。Second Embodiment A second embodiment will be described with reference to FIG. The same members as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted. In the second embodiment, the ground portion 14 of the pile 10 is formed of a hard member such as metal (eg, iron). On the other hand, the insertion portion 18 is made of synthetic rubber. The ground portion 14 and the insertion portion 18 are prevented from coming off from each other by a flange-shaped connecting portion 28 formed at the lower end of the ground portion 14. The method of using the pile 10 of the second embodiment and the method of removing water when the water in the installation hole 16 is frozen are the same as in the first embodiment. The pile 10 of the second embodiment is suitable for use in an environment where it is desired to form the above-ground portion 14 from a hard material.
【００１０】 （第３実施例） 第３実施例について図３と共に説明する。なお、先行実施例と同一の構成部材 については先行実施例と同一の符号を付し、説明は省略する。 第３実施例の杭１０では、地上部１４および挿入部１８は金属（例えば鉄）等 の硬質部材で形成された芯部材３０と、芯部材３０全体を被覆する合成ゴム（例 えばネオプレンゴム）製のカバー部材３２から成る。 挿入部１８が硬質の芯部材３０で形成されているが、ゴム製のカバー部材３２ に被覆されているので、設置孔１６内の水が凍結した際に杭１０を抜脱する場合 、作業者は地上部１４に外力を加えて杭１０を揺する。カバー部材３２を形成し ている合成ゴムは、先行実施例と同様、極めて低い温度（例えば摂氏氷点下６０ 度位）にならないと著しく硬化しないので、せいぜい摂氏氷点下２０度位の気温 であれば十分な弾力性を保持している。従って、カバー部材３２は弾性変形して 加えられた外力を、水が凍結して成る氷へ伝達する。この伝達した力で当該氷を 破砕することができる。(Third Embodiment) A third embodiment will be described with reference to FIG. The same members as those of the preceding embodiment are designated by the same reference numerals and their description is omitted. In the pile 10 of the third embodiment, the ground portion 14 and the insertion portion 18 are a core member 30 formed of a hard member such as a metal (for example, iron) and a synthetic rubber (for example, neoprene rubber) covering the entire core member 30. The cover member 32 is made of. Although the insertion portion 18 is formed of the hard core member 30, since it is covered with the rubber cover member 32, when the pile 10 is pulled out when the water in the installation hole 16 freezes, an operator Applies an external force to the ground portion 14 to shake the pile 10. The synthetic rubber forming the cover member 32 does not harden remarkably at an extremely low temperature (for example, about 60 degrees Celsius below freezing point) as in the previous embodiment. Retains elasticity. Therefore, the cover member 32 elastically deforms and transmits the applied external force to the ice formed by freezing of water. This transmitted force can break the ice.
【００１１】 氷が破砕されると挿入部１８を設置孔１６内に止めようとする物が無くなるの で杭１０を設置孔１６から抜脱することができる。 第３実施例の杭１０は、芯部材３０を硬質材料で形成しているので、地上部１ ４を硬質部材で形成したい環境での使用に適している。加えてカバー部材３２が 合成ゴムで形成されているので、自動車や人間が誤ってぶつかっても損傷や負傷 を軽減可能になっている。When the ice is crushed, there is no object to stop the insertion part 18 in the installation hole 16, so that the pile 10 can be removed from the installation hole 16. In the pile 10 of the third embodiment, the core member 30 is made of a hard material, so that it is suitable for use in an environment where the ground portion 14 is desired to be made of a hard member. In addition, since the cover member 32 is made of synthetic rubber, damage and injury can be reduced even if a vehicle or a person accidentally bumps into the vehicle.
【００１２】 （第４実施例） 第４実施例について図４と共に説明する。なお、先行実施例と同一の構成部材 については先行実施例と同一の符号を付し、説明は省略する。 第４実施例では、杭１０の地上部１４は金属（例えば鉄）等の硬質部材で形成 されている。一方、挿入部１８は、地上部１４から一体に延設されており、金属 製の芯部３４を合成ゴム製のカバー部材３２で被覆されている。 芯部３４とカバー部材３２は、芯部３４のフランジ部３６により互いに抜け止 めが図られている。 第４実施例の杭１０における使用方法は先行実施例と同一であり、抜脱方法は 第３実施例と同一である。 第４実施例の杭１０も、地上部１４を硬質材料で形成したい環境での使用に適 している。Fourth Embodiment A fourth embodiment will be described with reference to FIG. The same members as those of the preceding embodiment are designated by the same reference numerals and their description is omitted. In the fourth embodiment, the ground portion 14 of the pile 10 is formed of a hard member such as metal (for example, iron). On the other hand, the insertion portion 18 is integrally extended from the ground portion 14, and the metal core portion 34 is covered with the synthetic rubber cover member 32. The flange portion 36 of the core portion 34 prevents the core portion 34 and the cover member 32 from coming off from each other. The method of using the pile 10 of the fourth embodiment is the same as that of the preceding embodiment, and the extracting method is the same as that of the third embodiment. The pile 10 of the fourth embodiment is also suitable for use in an environment where it is desired to form the above-ground portion 14 from a hard material.
【００１３】 第２実施例〜第４実施例においても挿入部１８には大径部２０が設けられ、設 置孔１６へ嵌合する構造になっているが、杭１０の使用中に設置孔１６内への水 の侵入を防止する必要がない場合、必ずしも嵌合構造にしなくてもよい。すなわ ち、設置孔１６へ挿入される挿入部１８を、ゴムで形成、または硬質部材で形成 すると共に硬質部材をゴムで被覆すれば、内部の水が凍結した設置孔１６内に在 る杭１０を容易に抜脱することが可能となる。In the second to fourth embodiments as well, the insertion portion 18 is provided with the large-diameter portion 20 so as to be fitted into the installation hole 16, but the installation hole is used while the pile 10 is in use. If it is not necessary to prevent the entry of water into the inside 16, it is not always necessary to adopt the fitting structure. That is, if the insertion portion 18 to be inserted into the installation hole 16 is formed of rubber or is formed of a hard member and the hard member is covered with rubber, the pile inside the installation hole 16 in which water is frozen is formed. It becomes possible to easily remove 10.
【００１４】 （第５実施例） 第５実施例について図５と共に説明する。なお、先行実施例と同一の構成部材 については先行実施例と同一の符号を付し、説明は省略する。 第５実施例では、杭１０の挿入部１８の外周面にラジアル方向へ延設された延 設部３６が設けられている。 設置孔１６は中間に画成部３８が形成されている。画成部３８より上部は、延 設部３６を含む挿入部１８が軸線を中心に回動可能に挿入可能なサイズである。 画成部３８には挿入部１８と地上部１４が回動可能に挿入可能な小径孔４０と、 延設部３６が挿入可能で小径孔４０と連絡するラジアル孔４２が穿設されている 。(Fifth Embodiment) A fifth embodiment will be described with reference to FIG. The same members as those of the preceding embodiment are designated by the same reference numerals and their description is omitted. In the fifth embodiment, an extension portion 36 extending in the radial direction is provided on the outer peripheral surface of the insertion portion 18 of the pile 10. A partition 38 is formed in the middle of the installation hole 16. The size above the defining portion 38 is of a size such that the inserting portion 18 including the extending portion 36 can be inserted rotatably around the axis. The defining portion 38 is provided with a small diameter hole 40 into which the insertion portion 18 and the ground portion 14 can be rotatably inserted, and a radial hole 42 into which the extension portion 36 can be inserted and which communicates with the small diameter hole 40.
【００１５】 第５実施例の杭１０が、延設部３６をラジアル孔４２に対応させた状態で設置 孔１６内に挿入されると、杭１０全体が設置孔１６内へ収容され、地上部１４の 上端に設けられている天板部４４の上面が路面と同一レベルになる。この天板部 ４４を設置孔１６へ嵌着可能なサイズに形成すると、設置孔１６内への水の侵入 を防止可能となる。一方、杭１０を立てたい場合は天板部４４に設けられている リング４６を把持し、杭１０を引き上げる。延設部３６が画成部３８より上方に 達したら杭１０を９０度回動させ、下へ降ろす。すると延設部３６の下面が画成 部３８の上面と掛止して地上部１４を路面から突出した状態で保持することがで きる。When the pile 10 of the fifth embodiment is inserted into the installation hole 16 with the extending portion 36 corresponding to the radial hole 42, the entire pile 10 is accommodated in the installation hole 16 and the above-ground portion is provided. The top surface of the top plate portion 44 provided at the upper end of 14 is at the same level as the road surface. If the top plate portion 44 is formed in a size that can be fitted into the installation hole 16, it is possible to prevent water from entering the installation hole 16. On the other hand, when it is desired to stand the pile 10, the ring 46 provided on the top plate portion 44 is gripped and the pile 10 is pulled up. When the extending portion 36 reaches above the defining portion 38, the pile 10 is rotated 90 degrees and lowered. Then, the lower surface of the extending portion 36 can be engaged with the upper surface of the defining portion 38 to hold the ground portion 14 in a state of protruding from the road surface.
【００１６】 第５実施例において、地上部１４および挿入部１８の構造は、先行各実施例の いずれの構造も採用することができる。従って、凍結時における抜脱作用も先行 各実施例と同一である。 以上、本考案の好適な実施例について種々述べて来たが、本考案は上述の実施 例に限定されるのではなく、考案の精神を逸脱しない範囲で多くの改変を施し得 るのはもちろんである。In the fifth embodiment, as the structure of the ground portion 14 and the insertion portion 18, any structure of the preceding embodiments can be adopted. Therefore, the removal action at the time of freezing is the same as in the preceding examples. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. Is.
【００１７】[0017]
本考案に係る杭を用いると、挿入部は、ゴムで形成、または硬質部材で形成す ると共に該硬質部材をゴムで被覆してあるので、挿入部が挿入した状態の設置孔 内において、水が凍結しても挿入部へ外力を加えると、ゴム部分は変形可能なの で、変形したゴム部分で氷を破砕可能となるので、杭を容易に設置孔から抜脱す ることができる。従って、杭が抜けずに困ることがない等の著効を奏する。 When the pile according to the present invention is used, since the insertion part is formed of rubber or is formed of a hard member and the hard member is covered with rubber, water is not stored in the installation hole when the insertion part is inserted. Even if it freezes, if an external force is applied to the insertion part, the rubber part can be deformed, and the deformed rubber part can crush the ice, so the pile can be easily removed from the installation hole. Therefore, there is a remarkable effect that the pile does not come off and there is no problem.
【図１】本考案に係る杭の第１実施例を示した断面図。FIG. 1 is a sectional view showing a first embodiment of a pile according to the present invention.
【図２】本考案に係る杭の第２実施例を示した断面図。FIG. 2 is a sectional view showing a second embodiment of the pile according to the present invention.
【図３】本考案に係る杭の第３実施例を示した断面図。FIG. 3 is a sectional view showing a third embodiment of a pile according to the present invention.
【図４】本考案に係る杭の第４実施例を示した断面図。FIG. 4 is a sectional view showing a fourth embodiment of the pile according to the present invention.
【図５】本考案に係る杭の第５実施例を示した斜視図。FIG. 5 is a perspective view showing a fifth embodiment of the pile according to the present invention.
１０ 杭 １２ 路面 １４ 地上部 １６ 設置孔 １８ 挿入部 ３２ カバー部材 10 Pile 12 Road Surface 14 Ground Part 16 Installation Hole 18 Insertion Part 32 Cover Member
Claims (1)
られる設置孔へ挿入可能な挿入部とから成る杭におい
て、 前記挿入部は、ゴムで形成、または硬質部材で形成する
と共に該硬質部材をゴムで被覆したことを特徴とする
杭。1. A pile comprising an above-ground part exposed from the ground and an insert part insertable into an installation hole provided on the above ground, wherein the insert part is formed of rubber or a hard member and the hard member is formed. A pile characterized by being coated with rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1241893U JPH0671512U (en) | 1993-03-19 | 1993-03-19 | Pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1241893U JPH0671512U (en) | 1993-03-19 | 1993-03-19 | Pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0671512U true JPH0671512U (en) | 1994-10-07 |
Family
ID=11804728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1241893U Pending JPH0671512U (en) | 1993-03-19 | 1993-03-19 | Pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0671512U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010070953A (en) * | 2008-09-17 | 2010-04-02 | Unimatec Co Ltd | Fixing structure of road sign pole |
| JP4719971B2 (en) * | 2000-12-08 | 2011-07-06 | Ｎｏｋ株式会社 | Retractable road sign |
-
1993
- 1993-03-19 JP JP1241893U patent/JPH0671512U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4719971B2 (en) * | 2000-12-08 | 2011-07-06 | Ｎｏｋ株式会社 | Retractable road sign |
| JP2010070953A (en) * | 2008-09-17 | 2010-04-02 | Unimatec Co Ltd | Fixing structure of road sign pole |
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