JP2005002691A - Embedded magnetic marker, manufacturing method for the same, and vehicle guiding facility - Google Patents

Embedded magnetic marker, manufacturing method for the same, and vehicle guiding facility Download PDF

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Publication number
JP2005002691A
JP2005002691A JP2003168604A JP2003168604A JP2005002691A JP 2005002691 A JP2005002691 A JP 2005002691A JP 2003168604 A JP2003168604 A JP 2003168604A JP 2003168604 A JP2003168604 A JP 2003168604A JP 2005002691 A JP2005002691 A JP 2005002691A
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Japan
Prior art keywords
shrinkable film
heat
magnetic
magnetic body
embedded
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JP2003168604A
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Japanese (ja)
Inventor
Fumio Tani
文雄 谷
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Nippon Yusoki Co Ltd
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Nippon Yusoki Co Ltd
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Priority to JP2003168604A priority Critical patent/JP2005002691A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an embedded magnetic marker which is free from an environmental influence, and to provide a manufacturing method for the same, and a vehicle guiding facility. <P>SOLUTION: The embedded magnetic marker 1 consists of a magnetic body 3 to be embedded in a floor surface 2, and a heat shrinkable film 4 hermetically sealing the magnetic body. The magnetic body 3 is inserted into the cylindrical heat shrinkable film 4 having both edges 40 thereof opened, and the cylindrical heat shrinkable film 4 is heated to be shrunk, which brings the heat shrinkable film into intimate contact with the magnetic body 3, whereby both the edges 40 of the cylindrical heat shrinkable film 4 are hermetically sealed. The vehicle guiding facility 8 controls vehicles such as AGVs so as to travel based on a magnetic flux generated by the magnetic body 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、床面の適所に埋設され、AGV等にその停止位置や走行経路を磁気によって認識されるための埋設用磁気マーカー、その製造方法、及び埋設用磁気マーカーを適用した車両誘導設備に関する。
【0002】
【従来の技術】
従来より、ポリマー等を棒状又は方形塊に成形した可撓体に、帯磁した粉状のフェライト等の磁性成分を含有させて成る埋設用磁気マーカーが周知である。また、AGV等を、床面の適所に配置した磁気マーカーによって誘導する技術は、下記文献に各々開示されている。
【0003】
【特許文献1】
特開平9−88024号公報
【特許文献2】
特開平7−239713号公報
【特許文献3】
特開平6−75623号公報
【0004】
【発明が解決しようとする課題】
図7に示した埋設用磁気マーカー10は、製造過程において磁性成分を含有したポリマー等を長尺な棒状の可撓体30を押出成形し、この可撓体30を建設現場等において所望の長さに裁断して得られるものである。このような埋設用磁気マーカー10を床面2に設置するには、図8に示すように、床面2に予め形成した溝5の底部に接着剤6を塗布し、この溝5に可撓体30を没入し、最後に、溝5の開口を、エポキシ樹脂等のシール材7で塞ぐようにしている。
【0005】
しかしながら、シール材7が経年変化によりひび割れしたり、シール材7の収縮に起因してこれと溝5の内側面との間に僅かながら隙間が開くことがある。例えば、有機溶剤等を扱う工場内に、当該埋設用磁気マーカー10を設置した場合、上記のひびや隙間を経て床面に溢れた有機溶剤が溝内に浸入して可撓体30を劣化させ、この本来の機能を損なうという問題が起こる。
【0006】
そこで、本発明の目的は、環境に影響されることのない埋設用磁気マーカー、その製造方法、及び車両誘導設備を提供することにある。
【0007】
【課題を解決するための手段】
本発明に係る埋設用磁気マーカーは、床面に埋設される磁性体から成るものであって、前記磁性体を熱収縮性フィルムにて密封したことを特徴とする。
【0008】
本発明に係る埋設用磁気マーカーの製造方法は、磁性体を、熱収縮性フィルムにて包装し、該熱収縮性フィルムを、加熱して収縮させることにより、前記磁性撓体に密着させることを特徴とする。
【0009】
また、本発明に係る埋設用磁気マーカーの製造方法は、磁性体を、両端が開放した筒状の熱収縮性フィルム内へ挿入し、該筒状の熱収縮性フィルムを、加熱して収縮させることにより、前記磁性体に密着させてから、前記筒状の熱収縮性フィルムの両端を密封することを特徴とする。
【0010】
本発明に係る車両誘導設備は、床面に埋設した磁性体が発生する磁束に基づき車両を運行させるものであって、熱収縮性フィルムに密封された前記磁性体を、前記床面に形成した溝に没入したことを特徴とする。
【0011】
【発明の実施の形態】
図1に示すように、本発明の実施の形態に係る埋設用磁気マーカー1は、床面2に埋設される磁性体3を、熱収縮性フィルム4にて密封したものである。床面2とは、倉庫又は工場等の床の他、路面等のようなコンクリートやアスファルト等から成る道床を意味する。
【0012】
磁性体3は、発泡合成樹脂、合成ゴム、又はポリマー等を角棒状、丸棒状、円盤状、又は方形塊となるよう成形して得られるものであり、この成形の過程において、帯磁した粉状のフェライト等の磁性成分を含有させたものである。特に、合成ゴムに磁性成分を含有させて成る所謂ゴム磁石は、適度な弾性及び可撓性を有し、床面2に形成した溝5に没入させたり、同溝5が湾曲して延びる場合に、これに沿わせて撓ませることが容易である。
【0013】
溝5の断面形状又は寸法は、床面2よりも低い位置に磁性体3全体を没入できれば特に限定されるものではない。本実施の形態においては、床面2に加工する際の容易さを考慮して、厚さ6mm程度の回転刃を床面2に上方から切り込ませることにより所望の深さの溝5を形成した。
【0014】
熱収縮性フィルム4は、食品等のパッケージの包装資材として周知のシュリンク包装に用いられる材料を適用しても良い。このような熱収縮性フィルム4は、一枚物又は筒状の形態のものが多種製造されている。
【0015】
例えば、熱収縮性ポリプロピレンから成る一枚物のシートを袋状に折り曲げ、或いは熱収縮性ポリプロピレンを極薄の筒状に成形したものの中に、被包装物を投入し、この全体を一度に又は徐々に、加熱用電球又はドライヤー等を用いて加熱すると、熱収縮性ポリプロピレンが収縮して被包装物の周面に密着することになる。また、熱収縮性ポリプロピレンの加熱による収縮の割合や収縮する速度は熱量の加減で適宜に調整することができる。この原理に基づき、本発明は被包装物たる磁性体3に熱収縮性フィルム4を密着させるものである。
【0016】
本発明の実施の形態に係る埋設用磁気マーカー1を製造するには、図1に示すように、既述の磁性成分を含有させた磁性体3を、熱収縮性フィルム4にて包装し、熱収縮性フィルム4を、加熱して収縮させることにより、磁性体3に密着させたもであるため、その全体構造が極めて簡素である。従って、当該埋設用磁気マーカー1を床面2にの埋設する施工現場においても極めて簡単に製造することができる。
【0017】
以上の製造方法を実施形態に対応させて具体的に詳しく述べる。即ち、第1に、磁性体3を、両端40が開放した筒状の熱収縮性フィルム4内へ挿入する。第2に、筒状の熱収縮性フィルム4を加熱して収縮させることにより、図2(a)に示すように、筒状の熱収縮性フィルム4を磁性体3の表面に密着させる。ここに適用した磁性体3は角棒状のものであるため、筒状の熱収縮性フィルム4が収縮すると、これが磁性体3の表面に密着し、全体とし角棒状となる。
【0018】
このように、熱収縮性フィルム4を真っ直ぐな磁性体3の表面に密着させた後であっても、磁性体3に外力を加えるなどして、図2(b)に示すように、磁性体3を湾曲させることは可能である。また、磁性体3を筒状の熱収縮性フィルム4に挿入させる以前に湾曲させておいても良い。この場合、熱収縮性フィルム4を加熱すると、熱収縮性フィルム4は、磁性体3の湾曲した形状に沿って同表面に密着する。
【0019】
以上のように、熱収縮性フィルム4が磁性体3の表面に密着した状態で、熱収縮性フィルム4を加熱する以前に筒状の熱収縮性フィルム4の内部に滞留していた空気等は、筒状の熱収縮性フィルム4が熱収縮することにより、その内径が絞られるに従って両端40を経て排出される。従って、磁性体3の表面と熱収縮性フィルム4との間に、気泡として空気等が残留することがない。
【0020】
第3に、筒状の熱収縮性フィルム4の両端40を密封する。この工程は、両端40のそれぞれの内面を接着剤等を介して貼付けるようにしても良いが、両端40を加熱しつつ両端40をプレスすることにより溶着させても良い。
【0021】
図3及び図4は、磁性体3が発生する磁束に基づきAGV等の車両を運行させる車両誘導設備8を示している。同設備8は、図3に示すように、床面2に予め形成した溝5の底部に接着剤6を塗布し、上記の通り磁性体3を熱収縮性フィルム4にて密封して成る埋設用磁気マーカー1を溝5に没入し、更に図4に示すように、溝5の開口を、エポキシ樹脂等を主成分としたシール材7によって塞いだものである。シール材7は、埋設用磁気マーカー1を隠蔽しこれが台車等の車輪に擦れて損傷するのを防止する役割を果たす。
【0022】
車両誘導設備8の利点としては、例えば、床面2に溢れた有機溶剤が、床面2に埋設した当該埋設用磁気マーカー1に達するような事態になっても、磁気を発生する主体である磁性体3を熱収縮性フィルム4によって保護することができる。従って、埋設用磁気マーカー1は、その埋設される環境に殆ど影響されることがなく、本来の性能を長期間保つことができる。また、当該埋設用磁気マーカー1は、既存の磁性体の寸法又は形状を全く変更することなく製造できる。
【0023】
しかも、当該埋設用磁気マーカー1を床面2に埋設するに際して、熱収縮性フィルム4は極めて薄い材料であるため、熱収縮性フィルム4の厚みを考慮する必要がない。従って、従来の技術として既述したように磁性体3を床面2に形成した溝5に直接に没入する場合と比較して、熱収縮性フィルム4の厚み分、溝5の幅又は深さを拡張しなくても済むという利点もある。
【0024】
尚、本発明はその趣旨を逸脱しない範囲で当業者の知識に基づき種々なる改良、修正、又は変形を加えた態様で実施できるものである。例えば、磁性体3が図5に示すような薄い円盤状であっても良い。
【0025】
この場合、一枚物のシート状の熱収縮性フィルム4を二つ折りにし、この間に、薄い円盤状の磁性体3を挟み込む。そして、僅かに空気抜きの箇所を残して、熱収縮性フィルム4の周縁を接着又は溶着し、これを加熱する。熱収縮性フィルム4が収縮したところで、上記の空気抜きの箇所を接着又は溶着することにより、熱収縮性フィルム4の内側に磁性体3を完全に密封する。
【0026】
続いて、床面2に予め形成した円形の溝5の底部に接着剤6を塗布し、薄い円盤状の磁性体3を、熱収縮性フィルム4と共に円形の溝5に没入する。この後、円形の溝5の開口をシール材又は蓋等で塞いでも良い。
【0027】
また、以上の説明では、磁性体3が可撓性に優れていることを前提としたが、金属のように手作業では容易に曲げられない程硬い素材に帯磁させたものを磁性体3として適用しても良い。
【0028】
【発明の効果】
本発明に係る埋設用磁気マーカーは、床面に埋設される磁性体を熱収縮性フィルムにて密封したものであるので、例えば、床面に溢れた有機溶剤が、同床面に埋設した当該埋設用磁気マーカーに達するような事態になっても、磁気を発生する主体である磁性体を熱収縮性フィルムによって保護することができる。このように当該埋設用磁気マーカーは、その埋設される環境に大きく影響されることがなく、本来の性能を長期間保つことができる。
【0029】
しかも、本発明に係る埋設用磁気マーカーは、その全体構造が極めて簡素であり、既成の磁性体を熱収縮性フィルムにて密封するだけで得られるため、当該埋設用磁気マーカーを埋設する施工現場において簡単に製造できるという利点もある。
【0030】
また、本発明に係る埋設用磁気マーカーの製造方法によれば、磁性体を熱収縮性フィルムにて包装し、これを加熱して熱収縮性フィルムを収縮させることにより、磁性体に熱収縮性フィルムを密着させられるので、既成の磁性体の寸法又は形状を変更することなく製造できる。
【0031】
従って、既成の磁性体に比較しても製造コストが特に高騰することはない。また、熱収縮性フィルムは極めて薄い材料であるため、磁性体を床面に埋設するに際して、熱収縮性フィルムの厚みを考慮する必要がない。即ち、磁性体を床面に形成した溝に直接に没入する場合と比較して、熱収縮性フィルムの厚み分、溝の幅又は深さを拡張しなくても済むという利点がある。
【0032】
しかも、熱収縮性フィルムにて磁性体を密封する作業は、ドライヤー又は加熱用電球等の身近な道具を準備するだけて極めて迅速且つ容易に行えるので、施工現場において、床面に形成した溝の形状等に合わせて磁性体を所望の長さに裁断する必要が生じた場合でも、磁性体を裁断した後、直ちに同磁性体を熱収縮性フィルムにて密封できる。或いは、床面に形成した溝が湾曲しこれに沿わせて磁性体を曲げる必要が生じた場合でも、熱収縮性フィルムは熱収縮する以前であれば変形の自由度が大きく、熱収縮した後でも多少の変形は可能なので、既成の磁性体を溝に没入する場合と変わりなく、施工作業を自在に行えるという利点がある。
【0033】
更に、本発明に係る埋設用磁気マーカーの製造方法によれば、両端が開放した筒状の熱収縮性フィルム内へ磁性体を挿入し、このまま加熱して筒状の熱収縮性フィルムを収縮させることにより、筒状の熱収縮性フィルムを磁性体に密着させるので、例えば、一枚物の熱収縮性フィルムを用いて磁性体を方向する場合のように、一枚物の熱収縮性フィルムを袋状に折り曲げる手間が省ける。
【0034】
しかも、一枚物の熱収縮性フィルムを袋状に折り曲げる場合には、熱収縮性フィルム同士を突き合わせる箇所が継ぎ目となることは避けられないが、当該埋設用磁気マーカーの製造方法によれば、製造工程の最後の仕上げとして、筒状の熱収縮性フィルムの両端を密封するだけで済む。
【0035】
従って、製造工程を一層簡略化できることに加え、可撓材を熱収縮性フィルムの内側に密封し、例えば、床面に溢れた有機溶剤が、同床面に埋設した当該埋設用磁気マーカーに達するような事態になっても、磁気を発生する主体である磁性体を熱収縮性フィルムによって一層確実に保護することができる。
【0036】
また、本発明に係る車両誘導設備によれば、磁性体を極めて薄い材料である熱収縮性フィルムにて密封し、磁性体を熱収縮性フィルムと共に、床面に形成した溝に没入しているので、磁性体の発生する磁束が熱収縮性フィルムによって遮られたり弱められたりすることがない。従って、熱収縮性フィルムが磁性体を上記のように保護する効果に加え、車両を誘導する本来の機能を確実に果たすことができる。
【図面の簡単な説明】
【図1】本発明の実施の形態に係る埋設用磁気マーカーの第1の製造工程を示す斜視図。
【図2】本発明の実施の形態に係る埋設用磁気マーカーの第2の製造工程を示す斜視図。
【図3】本発明の実施の形態に係る車両誘導設備を分解した断面図。
【図4】本発明の実施の形態に係る車両誘導設備の断面図。
【図5】本発明の他の実施の形態に係る埋設用磁気マーカーの製造工程を示す斜視図。
【図6】本発明の他の実施の形態に係る埋設用磁気マーカーを適用した車両誘導設備を分解した斜視図。
【図7】従来例の埋設用磁気マーカーを一部破断した斜視図。
【図8】従来例の埋設用磁気マーカーを適用した車両誘導設備の断面図。
【符号の説明】
1:埋設用磁気マーカー
2:床面
3:磁性体
4:熱収縮性フィルム
5:溝
6:接着剤
7:シール材
8:車両誘導設備
40:両端
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an embedded magnetic marker that is embedded in an appropriate place on a floor surface and for which an AGV or the like recognizes its stop position or travel route by magnetism, a manufacturing method thereof, and a vehicle guidance facility to which the embedded magnetic marker is applied .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a magnetic marker for embedding is known in which a flexible body obtained by forming a polymer or the like into a rod-like or rectangular block contains a magnetic component such as magnetized powdered ferrite. Further, techniques for guiding AGV and the like with magnetic markers arranged at appropriate positions on the floor surface are disclosed in the following documents, respectively.
[0003]
[Patent Document 1]
JP-A-9-88024 [Patent Document 2]
JP-A-7-239713 [Patent Document 3]
Japanese Patent Laid-Open No. 6-75623 [0004]
[Problems to be solved by the invention]
The embedded magnetic marker 10 shown in FIG. 7 is formed by extruding a long rod-shaped flexible body 30 of a polymer containing a magnetic component in the manufacturing process, and the flexible body 30 has a desired length at a construction site or the like. It is obtained by cutting. In order to install such an embedded magnetic marker 10 on the floor 2, as shown in FIG. 8, an adhesive 6 is applied to the bottom of a groove 5 formed in advance on the floor 2, and the groove 5 is flexible. The body 30 is immersed, and finally, the opening of the groove 5 is closed with a sealing material 7 such as an epoxy resin.
[0005]
However, the sealing material 7 may crack due to aging, or a slight gap may be formed between the sealing material 7 and the inner surface of the groove 5 due to the shrinkage of the sealing material 7. For example, when the embedded magnetic marker 10 is installed in a factory that handles organic solvents, etc., the organic solvent overflowing the floor surface through the cracks and gaps enters the groove and degrades the flexible body 30. This causes the problem of impairing its original function.
[0006]
Accordingly, an object of the present invention is to provide an embedded magnetic marker that is not affected by the environment, a manufacturing method thereof, and a vehicle guidance facility.
[0007]
[Means for Solving the Problems]
The magnetic marker for embedding according to the present invention is made of a magnetic material embedded in a floor surface, and is characterized in that the magnetic material is sealed with a heat-shrinkable film.
[0008]
The manufacturing method of the magnetic marker for embedment according to the present invention is to wrap a magnetic body with a heat-shrinkable film, and heat-shrink the heat-shrinkable film so as to be in close contact with the magnetic flexible body. Features.
[0009]
Also, in the method for producing an embedded magnetic marker according to the present invention, a magnetic material is inserted into a cylindrical heat-shrinkable film having both ends open, and the cylindrical heat-shrinkable film is heated to shrink. Thus, both the ends of the cylindrical heat-shrinkable film are sealed after being brought into close contact with the magnetic body.
[0010]
The vehicle guidance facility according to the present invention operates a vehicle based on a magnetic flux generated by a magnetic body embedded in a floor surface, and the magnetic body sealed with a heat-shrinkable film is formed on the floor surface. It is characterized by being immersed in the groove.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, an embedded magnetic marker 1 according to an embodiment of the present invention is a magnetic body 3 embedded in a floor surface 2 sealed with a heat-shrinkable film 4. The floor surface 2 means a road floor made of concrete, asphalt or the like such as a road surface in addition to a floor of a warehouse or a factory.
[0012]
The magnetic body 3 is obtained by molding a foamed synthetic resin, synthetic rubber, polymer, or the like into a square bar shape, a round bar shape, a disk shape, or a square lump. In this molding process, a magnetic powder is obtained. And a magnetic component such as ferrite. In particular, a so-called rubber magnet made of synthetic rubber containing a magnetic component has appropriate elasticity and flexibility, and is immersed in the groove 5 formed on the floor 2 or when the groove 5 extends in a curved manner. Moreover, it is easy to bend along this.
[0013]
The cross-sectional shape or dimension of the groove 5 is not particularly limited as long as the entire magnetic body 3 can be immersed in a position lower than the floor surface 2. In the present embodiment, considering the ease of processing into the floor surface 2, a groove 5 having a desired depth is formed by cutting a rotary blade having a thickness of about 6 mm into the floor surface 2 from above. did.
[0014]
The heat-shrinkable film 4 may be a material used for shrink wrapping that is well known as a packaging material for packages such as food. Such heat-shrinkable film 4 is manufactured in a variety of single-piece or cylindrical forms.
[0015]
For example, a single sheet made of heat-shrinkable polypropylene is folded into a bag shape, or heat-shrinkable polypropylene is molded into an extremely thin cylindrical shape, and the package is put in at one time or When heated gradually using a heating bulb or a dryer, the heat-shrinkable polypropylene shrinks and adheres to the peripheral surface of the package. Further, the rate of shrinkage and the rate of shrinkage due to heating of the heat-shrinkable polypropylene can be appropriately adjusted by adjusting the amount of heat. Based on this principle, this invention makes the heat-shrinkable film 4 contact | adhere to the magnetic body 3 which is a package.
[0016]
To manufacture the magnetic marker 1 for embedding according to the embodiment of the present invention, as shown in FIG. 1, the magnetic material 3 containing the magnetic component described above is packaged with a heat-shrinkable film 4, Since the heat-shrinkable film 4 is heated and shrunk so as to be in close contact with the magnetic body 3, its entire structure is extremely simple. Therefore, the magnetic marker 1 for embedding can be manufactured very easily even at a construction site where the floor marker 2 is embedded.
[0017]
The above manufacturing method will be specifically described in detail corresponding to the embodiment. That is, first, the magnetic body 3 is inserted into the cylindrical heat-shrinkable film 4 with both ends 40 open. Secondly, the tubular heat-shrinkable film 4 is heated and shrunk, thereby bringing the tubular heat-shrinkable film 4 into close contact with the surface of the magnetic body 3 as shown in FIG. Since the magnetic body 3 applied here is in the shape of a square bar, when the cylindrical heat-shrinkable film 4 is shrunk, it adheres to the surface of the magnetic body 3 and becomes a square bar as a whole.
[0018]
In this way, even after the heat-shrinkable film 4 is brought into close contact with the surface of the straight magnetic body 3, as shown in FIG. It is possible to curve 3. Further, the magnetic body 3 may be curved before being inserted into the cylindrical heat-shrinkable film 4. In this case, when the heat-shrinkable film 4 is heated, the heat-shrinkable film 4 adheres to the same surface along the curved shape of the magnetic body 3.
[0019]
As described above, in the state where the heat-shrinkable film 4 is in close contact with the surface of the magnetic body 3, before the heat-shrinkable film 4 is heated, the air or the like staying in the cylindrical heat-shrinkable film 4 is When the cylindrical heat-shrinkable film 4 is thermally shrunk, it is discharged through both ends 40 as its inner diameter is reduced. Therefore, air or the like does not remain as bubbles between the surface of the magnetic body 3 and the heat-shrinkable film 4.
[0020]
Third, both ends 40 of the tubular heat-shrinkable film 4 are sealed. In this step, the inner surfaces of both ends 40 may be attached via an adhesive or the like, but may be welded by pressing both ends 40 while both ends 40 are heated.
[0021]
3 and 4 show a vehicle guidance facility 8 for operating a vehicle such as AGV based on the magnetic flux generated by the magnetic body 3. As shown in FIG. 3, the facility 8 is embedded in which an adhesive 6 is applied to the bottom of a groove 5 formed in advance on the floor 2 and the magnetic body 3 is sealed with the heat-shrinkable film 4 as described above. The magnetic marker 1 for use is immersed in the groove 5, and as shown in FIG. 4, the opening of the groove 5 is closed with a sealing material 7 mainly composed of epoxy resin or the like. The sealing material 7 serves to conceal the embedded magnetic marker 1 and prevent it from rubbing and damaging the wheel such as a carriage.
[0022]
As an advantage of the vehicle guidance facility 8, for example, even when the organic solvent overflowing the floor surface 2 reaches the magnetic marker 1 for embedding embedded in the floor surface 2, it is a main body that generates magnetism. The magnetic body 3 can be protected by the heat shrinkable film 4. Therefore, the embedded magnetic marker 1 is hardly affected by the embedded environment and can maintain its original performance for a long time. Moreover, the said magnetic marker 1 for embedding can be manufactured, without changing the dimension or shape of the existing magnetic body at all.
[0023]
In addition, when the magnetic marker 1 for embedding is embedded in the floor 2, the heat-shrinkable film 4 is an extremely thin material, and therefore it is not necessary to consider the thickness of the heat-shrinkable film 4. Therefore, compared with the case where the magnetic body 3 is directly immersed in the groove 5 formed on the floor surface 2 as described in the prior art, the thickness or the width or depth of the groove 5 is equal to the thickness of the heat-shrinkable film 4. There is also an advantage that it is not necessary to expand the.
[0024]
It should be noted that the present invention can be implemented in variously modified, modified, or modified forms based on the knowledge of those skilled in the art without departing from the spirit of the present invention. For example, the magnetic body 3 may have a thin disk shape as shown in FIG.
[0025]
In this case, the sheet-like heat-shrinkable film 4 is folded in half, and a thin disk-like magnetic body 3 is sandwiched between the two. And the periphery of the heat-shrinkable film 4 is adhere | attached or welded, leaving the location where air venting is slightly carried out, and this is heated. When the heat-shrinkable film 4 is shrunk, the magnetic body 3 is completely sealed inside the heat-shrinkable film 4 by adhering or welding the above air vent locations.
[0026]
Subsequently, the adhesive 6 is applied to the bottom of the circular groove 5 formed in advance on the floor 2, and the thin disk-shaped magnetic body 3 is immersed in the circular groove 5 together with the heat-shrinkable film 4. Thereafter, the opening of the circular groove 5 may be closed with a sealing material or a lid.
[0027]
In the above description, it is assumed that the magnetic body 3 is excellent in flexibility. However, the magnetic body 3 is made of a material hardened so as not to be bent easily by hand such as metal. It may be applied.
[0028]
【The invention's effect】
Since the magnetic marker for embedding according to the present invention is a magnetic material embedded in the floor surface sealed with a heat-shrinkable film, for example, the organic solvent overflowing on the floor surface is embedded in the floor surface. Even when the magnetic marker for embedment is reached, the magnetic material that is the main component of generating magnetism can be protected by the heat-shrinkable film. As described above, the embedded magnetic marker is not greatly influenced by the embedded environment, and can maintain its original performance for a long period of time.
[0029]
In addition, the magnetic marker for embedment according to the present invention has a very simple overall structure, and can be obtained simply by sealing an existing magnetic body with a heat-shrinkable film. There is also an advantage that it can be manufactured easily.
[0030]
In addition, according to the method for manufacturing an embedded magnetic marker according to the present invention, a magnetic material is packaged with a heat-shrinkable film, and the heat-shrinkable film is contracted by heating the magnetic material to thereby heat-shrink the magnetic material. Since the film can be brought into close contact, it can be produced without changing the size or shape of the existing magnetic material.
[0031]
Therefore, the manufacturing cost is not particularly increased even when compared with an existing magnetic material. In addition, since the heat-shrinkable film is an extremely thin material, it is not necessary to consider the thickness of the heat-shrinkable film when embedding the magnetic body on the floor surface. That is, there is an advantage that it is not necessary to expand the width or depth of the groove by the thickness of the heat-shrinkable film as compared with the case where the magnetic body is directly immersed in the groove formed on the floor surface.
[0032]
Moreover, the work of sealing the magnetic material with the heat-shrinkable film can be performed very quickly and easily by preparing a familiar tool such as a dryer or a heating bulb, so that the groove formed on the floor surface at the construction site. Even when it is necessary to cut the magnetic body to a desired length according to the shape or the like, the magnetic body can be immediately sealed with a heat-shrinkable film after cutting the magnetic body. Alternatively, even if the groove formed on the floor surface is curved and the magnetic body needs to be bent along the groove, the heat-shrinkable film has a large degree of freedom of deformation before heat-shrinking and after heat-shrinking. However, since some deformation is possible, there is an advantage that the construction work can be freely performed as in the case of immersing an existing magnetic body into the groove.
[0033]
Furthermore, according to the method of manufacturing a magnetic marker for embedding according to the present invention, a magnetic material is inserted into a cylindrical heat-shrinkable film having both ends opened, and is heated as it is to shrink the cylindrical heat-shrinkable film. In this way, the cylindrical heat-shrinkable film is closely attached to the magnetic material. For example, when a single heat-shrinkable film is used to direct the magnetic material, a single heat-shrinkable film is used. This saves you the trouble of folding it into a bag.
[0034]
Moreover, in the case of folding a single heat-shrinkable film into a bag shape, it is inevitable that the place where the heat-shrinkable films are abutted with each other will be a seam. As the final finishing of the manufacturing process, it is only necessary to seal both ends of the cylindrical heat-shrinkable film.
[0035]
Therefore, in addition to further simplifying the manufacturing process, the flexible material is sealed inside the heat-shrinkable film so that, for example, the organic solvent overflowing the floor reaches the embedded magnetic marker embedded in the floor. Even in such a situation, it is possible to more reliably protect the magnetic body, which is the main component that generates magnetism, with the heat-shrinkable film.
[0036]
In addition, according to the vehicle guidance facility according to the present invention, the magnetic body is sealed with a heat-shrinkable film that is an extremely thin material, and the magnetic body is immersed together with the heat-shrinkable film in a groove formed on the floor surface. Therefore, the magnetic flux generated by the magnetic material is not blocked or weakened by the heat shrinkable film. Therefore, in addition to the effect that the heat-shrinkable film protects the magnetic material as described above, the original function of guiding the vehicle can be reliably performed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first manufacturing process of a magnetic marker for embedding according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a second manufacturing process of the embedded magnetic marker according to the embodiment of the present invention.
FIG. 3 is an exploded cross-sectional view of the vehicle guidance facility according to the embodiment of the present invention.
FIG. 4 is a cross-sectional view of the vehicle guidance facility according to the embodiment of the present invention.
FIG. 5 is a perspective view showing a manufacturing process of an embedded magnetic marker according to another embodiment of the present invention.
FIG. 6 is an exploded perspective view of a vehicle guidance facility to which an embedded magnetic marker according to another embodiment of the present invention is applied.
FIG. 7 is a perspective view in which a buried magnetic marker of a conventional example is partially broken.
FIG. 8 is a cross-sectional view of a vehicle guidance facility to which a buried magnetic marker according to a conventional example is applied.
[Explanation of symbols]
1: Magnetic marker 2 for embedding 2: Floor surface 3: Magnetic body 4: Heat-shrinkable film 5: Groove 6: Adhesive 7: Seal material 8: Vehicle guidance equipment 40: Both ends

Claims (4)

床面に埋設される磁性体から成る埋設用磁気マーカーであって、前記磁性体を熱収縮性フィルムにて密封したことを特徴とする埋設用磁気マーカー。An embedding magnetic marker comprising a magnetic material embedded in a floor surface, wherein the magnetic material is sealed with a heat-shrinkable film. 磁性体を、熱収縮性フィルムにて包装し、該熱収縮性フィルムを、加熱して収縮させることにより、前記磁性体に密着させることを特徴とする埋設用磁気マーカーの製造方法。A method of manufacturing a magnetic marker for embedding, wherein a magnetic material is packaged with a heat-shrinkable film, and the heat-shrinkable film is heated and shrunk to adhere to the magnetic material. 磁性体を、両端が開放した筒状の熱収縮性フィルム内へ挿入し、該筒状の熱収縮性フィルムを、加熱して収縮させることにより、前記磁性体に密着させてから、前記筒状の熱収縮性フィルムの両端を密封することを特徴とする埋設用磁気マーカーの製造方法。The magnetic body is inserted into a cylindrical heat-shrinkable film open at both ends, and the cylindrical heat-shrinkable film is heated and shrunk to adhere to the magnetic body, and then the cylindrical A method for producing an embedded magnetic marker, wherein both ends of the heat shrinkable film are sealed. 床面に埋設した磁性体が発生する磁束に基づき車両を運行させる車両誘導設備であって、熱収縮性フィルムに密封された前記磁性体を、前記床面に形成した溝に没入したことを特徴とする車両誘導設備。A vehicle guidance facility for operating a vehicle based on magnetic flux generated by a magnetic body embedded in a floor surface, wherein the magnetic body sealed in a heat-shrinkable film is immersed in a groove formed in the floor surface. Vehicle guidance equipment.
JP2003168604A 2003-06-13 2003-06-13 Embedded magnetic marker, manufacturing method for the same, and vehicle guiding facility Withdrawn JP2005002691A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8974813B2 (en) 2006-07-05 2015-03-10 Ferring B.V. Hydrophilic polyurethane compositions
JP2015210624A (en) * 2014-04-25 2015-11-24 センサテック株式会社 Magnetic address information board for automatic carrier
JP2017141623A (en) * 2016-02-12 2017-08-17 愛知製鋼株式会社 Execution method of magnetic marker
US9987364B2 (en) 2002-09-27 2018-06-05 Ferring B.V. Water-swellable polymers
WO2021106878A1 (en) * 2019-11-26 2021-06-03 愛知製鋼株式会社 Magnetic marker
US11970827B2 (en) 2019-11-26 2024-04-30 Aichi Steel Corporation Magnetic marker

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9987364B2 (en) 2002-09-27 2018-06-05 Ferring B.V. Water-swellable polymers
US8974813B2 (en) 2006-07-05 2015-03-10 Ferring B.V. Hydrophilic polyurethane compositions
US10105445B2 (en) 2006-07-05 2018-10-23 Ferring B.V. Hydrophilic polyurethane compositions
JP2015210624A (en) * 2014-04-25 2015-11-24 センサテック株式会社 Magnetic address information board for automatic carrier
JP2017141623A (en) * 2016-02-12 2017-08-17 愛知製鋼株式会社 Execution method of magnetic marker
WO2021106878A1 (en) * 2019-11-26 2021-06-03 愛知製鋼株式会社 Magnetic marker
CN114746916A (en) * 2019-11-26 2022-07-12 爱知制钢株式会社 Magnetic marker
US11970827B2 (en) 2019-11-26 2024-04-30 Aichi Steel Corporation Magnetic marker

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