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JPS646862Y2 - - Google Patents

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Publication number
JPS646862Y2
JPS646862Y2 JP12620981U JP12620981U JPS646862Y2 JP S646862 Y2 JPS646862 Y2 JP S646862Y2 JP 12620981 U JP12620981 U JP 12620981U JP 12620981 U JP12620981 U JP 12620981U JP S646862 Y2 JPS646862 Y2 JP S646862Y2
Authority
JP
Japan
Prior art keywords
artificial
granular material
grass
artificial lawn
turf
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.)
Expired
Application number
JP12620981U
Other languages
Japanese (ja)
Other versions
JPS5830477U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP12620981U priority Critical patent/JPS5830477U/en
Publication of JPS5830477U publication Critical patent/JPS5830477U/en
Application granted granted Critical
Publication of JPS646862Y2 publication Critical patent/JPS646862Y2/ja
Granted legal-status Critical Current

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Description

【考案の詳細な説明】 この考案は、人工芝生を表面に敷設して構成さ
れた野球場、サツカー競技場、競技用トラツク、
テニスコート等の運動競技場、特にその人工芝生
面の改良に関する。
[Detailed explanation of the invention] This invention was developed for baseball fields, soccer stadiums, competition tracks, etc., which are constructed by laying artificial grass on the surface.
This invention relates to the improvement of athletic fields such as tennis courts, especially their artificial turf surfaces.

近年、人工芝生を採用する野球場が増えている
が、その一方では人工芝生によると思われる競技
者の身体的故障の発生が報じられている。その因
果関係についての医学的解明は未だ明らかにされ
ていないが、選手のスパイクが人工芝生の芝目内
に突き刺つて躓いたり、捕球、送球のため素早く
踏み止まろうとしたときに靴底を介して瞬間的に
加えられる強大な荷重を人工芝生が充分に吸収し
得ないため、その反力として強大な衝撃が選手の
足首部、膝関節、大腿部等に負荷されることによ
るものと推測される。この事態に対応するため、
半球状スパイクを設けた運動靴がすでに提案され
ているが、半球状スパイクは人工芝生上ですべり
を助長する等の理由から実用的ではなく余り普及
されていない。
In recent years, an increasing number of baseball stadiums have adopted artificial turf, but there have been reports of physical injuries among players that appear to be caused by the artificial turf. Although the medical explanation of the cause and effect relationship has not yet been clarified, there are cases where a player's spikes stick into the grain of the artificial turf and cause him to trip, or when the sole of his shoe hits when he tries to stop quickly to catch or throw a ball. This is due to the fact that the artificial turf cannot sufficiently absorb the enormous load instantaneously applied through the grass, and as a result, a strong impact is applied to the ankles, knee joints, thighs, etc. of the players as a reaction force. Guessed. In order to respond to this situation,
Athletic shoes equipped with hemispherical spikes have already been proposed, but the hemispherical spikes are not practical and have not been widely used because they encourage slipping on artificial turf.

本出願人は、このような状況に鑑み、先に、人
工芝生の芝目内に川砂、海砂、硅砂等の硅酸塩鉱
物粒(即ち無機質粒状物)、コルク粒、ヤシ殻粗
砕粒、加硫ゴム粒(即ち有機質粒状物)等を所定
の厚みに散布充填することにより、恰もバンカー
に打込まれたゴルフボールの如く、前記粒状物
(砂)の塑性変形により瞬間的に衝撃力を吸収す
るとともに、スパイク尖端の芝目への引掛りを有
効に防止することができる発明(特願昭56−
105993号(特開昭58−7005号公報))を提案した。
この発明によれば、そのほかに降雨時に人工芝生
表面の水滴を吸収する適度な吸水性と、降雨後に
は芝生表面に水溜りができない程度の保水能力が
得られ、短時間内にプレーの再開を可能にするこ
とができるという利点がある。しかしながら、そ
の後の実験によると、特に鉱物粒子が用いられて
いる場合、プレーヤの運動に伴なつて移動する細
砂等の粒状物と人工芝生との摺擦により、人工芝
生の摩耗が促進されることが判明した。
In view of this situation, the present applicant first added silicate mineral grains (i.e., inorganic granules) such as river sand, sea sand, and silica sand, cork grains, coarsely crushed coconut shell grains, By scattering and filling vulcanized rubber particles (i.e. organic granules) etc. to a predetermined thickness, the plastic deformation of the granules (sand) instantly applies impact force, just like a golf ball hit into a bunker. Invention that can effectively prevent the tip of a spike from getting caught in the grass grain (patent application filed in 1983)
No. 105993 (Japanese Unexamined Patent Application Publication No. 1983-7005)).
According to this invention, in addition, it has an appropriate water absorbency that absorbs water droplets on the artificial lawn surface during rain, and a water retention capacity that prevents water from puddles on the lawn surface after rain, allowing play to be resumed within a short time. It has the advantage of being possible. However, subsequent experiments have shown that, especially when mineral particles are used, the wear of the artificial turf is accelerated by the friction between the artificial turf and granular materials such as fine sand that move as the player moves. It has been found.

したがつて、この考案の目的は、先に提案した
発明の利点、すなわちすぐれた衝撃緩衝能や適度
な吸水性および保水能力を損なうことなく、芝目
内に充填された粒状物による人工芝生の摩耗を可
及的に防止し得るようにした運動競技場を提供す
ることにある。
Therefore, the purpose of this invention is to create an artificial lawn using granules filled in the grass grains without sacrificing the advantages of the previously proposed invention, namely, excellent shock-absorbing capacity and adequate water absorption and water retention capacity. The object of the present invention is to provide an athletic field in which wear can be prevented as much as possible.

以下、この考案を添付図面に示された実施例に
もとづいて詳細に説明する。
This invention will be described in detail below based on embodiments shown in the accompanying drawings.

この運動競技場は、基盤1上に敷設された人工
芝生2を備えている。なお、この基盤1は、地面
を堀り下げて構築された図示しない路床上に順次
積層された粒調砕石層3と、密粒アスフアルト・
コンクリート層4とからなる。人工芝生2は、公
知のものであつてよく、例えばポリアミド、ポリ
ウレタンなどの合成樹脂を用いて鋳型成形法によ
り基盤1上に無数の細長帯片を一体的に立設した
構造のものを用いることができるが、好ましく
は、外観、風合い等の面で天然芝生により類似
し、かつ、ボールのバウンドや靴底のすべり等の
運動競技上のコンデイシヨンに密接に関与する耐
ヘタリ性および人工芝生自体の耐久性に関与する
引張強度、引裂強度、耐候性、寸法安定性等の物
理的、機械的特性の面からすれば、ポリアミド、
ポリエチレンテレフタレート、ポリウレタン、ポ
リ塩化ビニリデン、ポリプロピレン等のフイルム
を細切したスリツトヤーンをパイル糸とするか、
または溶融紡糸により異形断面孔を有するノズル
を通して扁平糸を造り、これをパイル糸として、
これらパイル糸を裏打基布5に植毛して形成され
た構造のものがよい。
This athletic field includes an artificial lawn 2 laid on a foundation 1. The foundation 1 is made up of a layer of grain-grained crushed stone 3 and a dense-grained asphalt layer layered one after another on a roadbed (not shown) constructed by digging down the ground.
It consists of 4 concrete layers. The artificial lawn 2 may be of any known type; for example, it may have a structure in which countless elongated strips are integrally erected on the base 1 by molding using a synthetic resin such as polyamide or polyurethane. However, it is preferable to use artificial turf that is more similar to natural grass in terms of appearance and texture, and that has resistance to set and is closely related to conditions in athletics such as ball bounce and slipping of shoe soles. From the viewpoint of physical and mechanical properties such as tensile strength, tear strength, weather resistance, and dimensional stability, which are related to durability, polyamide,
Slit yarn made by slicing films such as polyethylene terephthalate, polyurethane, polyvinylidene chloride, polypropylene, etc. can be used as pile yarn, or
Or, by melt-spinning, a flat yarn is made through a nozzle with an irregularly shaped cross-sectional hole, and this is used as a pile yarn.
A structure formed by flocking these pile yarns to the backing base fabric 5 is preferable.

この人工芝生2の芝目内には、主として無機質
からなる粒状物層6が形成されている。この粒状
物層6は、人工芝生2上に散布することによりそ
の芝目内に充填されるのであるが、用いられる粒
状物としては川砂、海砂、硅砂等の硅酸塩鉱物粒
(即ち無機質粒子)が最も好ましく、特にこの鉱
物粒を粒度調整したのち、加熱脱水した乾燥粒子
は人工芝生2内に保留される水分を吸収してより
迅速に乾燥状態に復元する。なお、粒度としては
いわゆる硅砂5号ないし8号程度のものが好適で
ある。この粒状物層6の厚みは、適用される競技
場の種類(野球、サツカー、テニス等)に応じて
要求される緩衝性能、スパイクの引掛り防止能
力、および水分吸収能力等を考慮して定められ
る。例えば、5〜30mmの長さを有する人工芝生2
においては、その葉先2aが2〜15mm程度突出す
るように粒状物層6が芝目内に散布充填される。
なお、上記粒状物層6内に、吸水性に加えて適度
の弾力性を有する有機質粒子、例えばコルク粒や
ヤシ殻等の粗砕物粒子を混入してもよい。また、
このほかに有機質粒子として、加硫ゴムやプラス
チツク、特に発泡プラスチツクの粉砕物を用いる
ことも可能である。これらの粉砕物は、吸水性の
点については前記した硅砂やコルク粒などに及ば
ないが、人工芝生2の耐ヘタリ性を補強し、適度
の弾力性をもたせる点では効果がある。そして、
この考案においては、前記粒状物層6の少なくと
も表面層は、予め人工的にほぼ円球状に形成され
た球形粒状物7により構成されている。この球形
粒状物7は、例えばガラスビーズ等からなり、そ
の粒径は1mm以下、好ましくは200μm程度であ
る。なお、その形状については真円球状、だ円球
状等に代表されるように角のない丸味をおびた形
状に仕上げられたものであればよい。また、この
球形粒状物7による表面層の厚さは、前記粒状物
層6の少くとも1/3程度であることが好ましい。
勿論、前記粒状物層6の全部を球形粒状物7で構
成してもよいが、高価となるため、この考案の目
的を達成するには前記した量で充分である。
A granular material layer 6 mainly made of inorganic material is formed within the grass grains of this artificial lawn 2. This granular material layer 6 is filled in the turf by scattering it on the artificial lawn 2, and the granular materials used include silicate mineral particles (i.e., inorganic mineral particles) such as river sand, sea sand, and silica sand. Particularly, after adjusting the particle size of the mineral particles, the dried particles are heated and dehydrated to absorb the water retained in the artificial lawn 2 and more quickly restore the dry state. In addition, the particle size is preferably about so-called silica sand No. 5 to No. 8. The thickness of the granular material layer 6 is determined in consideration of the buffering performance, spike prevention ability, moisture absorption ability, etc. required depending on the type of stadium to which it is applied (baseball, soccer, tennis, etc.). It will be done. For example, artificial grass 2 with a length of 5-30 mm
In this case, the granular material layer 6 is scattered and filled into the grass grain so that the leaf tips 2a protrude by about 2 to 15 mm.
Incidentally, organic particles having appropriate elasticity in addition to water absorbency, for example, crushed particles such as cork grains and coconut shells may be mixed into the granular material layer 6. Also,
In addition, it is also possible to use pulverized vulcanized rubber or plastic, especially foamed plastic, as the organic particles. Although these pulverized products are not as good as the aforementioned silica sand or cork grains in terms of water absorption, they are effective in reinforcing the sagging resistance of the artificial lawn 2 and giving it appropriate elasticity. and,
In this invention, at least the surface layer of the granular material layer 6 is composed of spherical granular materials 7 that are artificially formed in advance into a substantially spherical shape. The spherical particles 7 are made of, for example, glass beads, and have a particle size of 1 mm or less, preferably about 200 μm. The shape may be any rounded shape with no corners, such as a perfect round sphere or an elliptical sphere. Further, the thickness of the surface layer made of the spherical particles 7 is preferably at least about 1/3 of the thickness of the granule layer 6.
Of course, the granule layer 6 may be entirely composed of spherical granules 7, but this would be expensive, so the amount described above is sufficient to achieve the purpose of this invention.

この考案によれば、上記したように人工芝生の
芝目内に散布充填された主として川砂や海砂等の
鉱物粒からなる粒状物層6の表面層がガラスビー
ズ等の球形粒状物7により構成されているため、
この球形粒状物7が恰も潤滑剤的な作用をなし、
鉱物粒との摺擦による人工芝生の摩耗が軽減され
る。したがつて、衝撃緩衝能や適度な吸水性およ
び保水能力を損なうことなく人工芝生の耐用寿命
を大巾に延ばすことができ、きわめて実用的であ
る。
According to this invention, as described above, the surface layer of the granular material layer 6 mainly composed of mineral grains such as river sand or sea sand, which is scattered and filled into the turf of the artificial lawn, is composed of spherical granular materials 7 such as glass beads. Because it has been
These spherical particles 7 act like a lubricant,
Abrasion of artificial grass caused by rubbing against mineral grains is reduced. Therefore, the useful life of the artificial lawn can be greatly extended without impairing its shock-absorbing ability or appropriate water absorption and water retention ability, making it extremely practical.

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの考案による人工芝生製運動競技場の
一部断面図である。 図中、1は基盤、2は人工芝生、6は川砂等の
粒状物層、7はガラスビーズ等の球形粒状物であ
る。
The drawing is a partial cross-sectional view of an artificial grass sports stadium according to this invention. In the figure, 1 is a base, 2 is an artificial lawn, 6 is a layer of granular material such as river sand, and 7 is a spherical granular material such as glass beads.

Claims (1)

【実用新案登録請求の範囲】 セメント、アスフアルト等よりなる基盤上に人
工芝生を敷設し、該人工芝生の芝目内に主として
川砂等の無機質粒状物を散布充填してなる運動競
技場において、 前記粒状物の表面層は、人工的にほぼ球形状に
形成されたガラスビーズ等の球形粒状物からなる
ことを特徴とする人工芝生製運動競技場。
[Scope of Claim for Utility Model Registration] In an athletic field formed by laying an artificial lawn on a base made of cement, asphalt, etc., and scattering and filling inorganic granules, mainly river sand, into the turf of the artificial lawn, the above-mentioned: An athletic field made of artificial grass, characterized in that the surface layer of the granular material is made of spherical granular material such as glass beads that are artificially formed into a substantially spherical shape.
JP12620981U 1981-08-26 1981-08-26 Artificial grass sports field Granted JPS5830477U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12620981U JPS5830477U (en) 1981-08-26 1981-08-26 Artificial grass sports field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12620981U JPS5830477U (en) 1981-08-26 1981-08-26 Artificial grass sports field

Publications (2)

Publication Number Publication Date
JPS5830477U JPS5830477U (en) 1983-02-28
JPS646862Y2 true JPS646862Y2 (en) 1989-02-22

Family

ID=29920004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12620981U Granted JPS5830477U (en) 1981-08-26 1981-08-26 Artificial grass sports field

Country Status (1)

Country Link
JP (1) JPS5830477U (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4556359B2 (en) * 2001-07-26 2010-10-06 住友ゴム工業株式会社 Artificial turf structure and artificial turf stadium
JP4964557B2 (en) * 2006-10-13 2012-07-04 株式会社アストロ Artificial grass with filler
DK3272939T3 (en) * 2016-07-18 2019-02-25 Polytex Sportbelaege Produktions Gmbh ARTICLE GRASS INCLUDING AN AGGLOMERATE FILL
JP6849454B2 (en) * 2017-01-31 2021-03-24 積水樹脂株式会社 Artificial lawn

Also Published As

Publication number Publication date
JPS5830477U (en) 1983-02-28

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