JPH11131517A - Underground structure cover - Google Patents
Underground structure coverInfo
- Publication number
- JPH11131517A JPH11131517A JP9311488A JP31148897A JPH11131517A JP H11131517 A JPH11131517 A JP H11131517A JP 9311488 A JP9311488 A JP 9311488A JP 31148897 A JP31148897 A JP 31148897A JP H11131517 A JPH11131517 A JP H11131517A
- Authority
- JP
- Japan
- Prior art keywords
- lid
- projections
- protrusion
- projection
- underground structure
- 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.)
- Pending
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、蓋表面に接触する
タイヤ或は靴底等との間の摩擦を増大し、それらの間の
スリップを防止するための凹凸構造を備えた地下構造物
用蓋に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground structure provided with a concavo-convex structure for increasing friction between a tire or a sole contacting a lid surface and preventing slippage therebetween. It is about the lid.
【０００２】[0002]
【従来の技術】従来からマンホール蓋の表面には様々な
パターンで模様が形成されているが、さらに摩擦を高め
て２輪車の転倒事故のような問題を起こさないために努
力がなされている。１例として示す実開昭５８−４２２
５２号の考案の場合、蓋上面に設けられている従前の凹
凸模様の上に更に凹凸模様を設けている。これにより蓋
寿命の延長を図り、摩擦によって磨かれた凸模様部分の
乱反射効果を期待する。しかし凹凸模様を重ねることで
寿命の延長を図るだけで、車のタイヤや靴底等の滑り止
めについては殆んど改善策が見られない。2. Description of the Related Art Conventionally, various patterns have been formed on the surface of a manhole cover, but efforts have been made to further increase the friction so as not to cause a problem such as a motorcycle accident. . 58-422, shown as an example
In the case of the device of No. 52, an uneven pattern is further provided on the conventional uneven pattern provided on the upper surface of the lid. With this, the life of the lid is extended, and the irregular reflection effect of the convex portion polished by friction is expected. However, by merely extending the life by overlapping the uneven patterns, there is hardly any improvement measures against slippage of tires and soles of cars.
【０００３】他方、実公平３−５５６４２号の考案では
蓋本体の表面に主模様と副模様を突設し、主模様を形成
する主凸部を副模様を形成する副凸部よりも高く形成し
ている。これは歩道にも使用されるが、車道に使用する
場合、主凸部が副凸部の上に突出して２段に滑り止めの
作用をする。しかし、副凸部は網目状や円形模様の点在
で背景を構成し、その中に主凸部として、鳥や魚などの
大柄模様を目立つように配置している。このため主凸部
が車のタイヤの滑り止めに寄与する割合は少なく、かつ
タイヤの進入方向によって差を生じるおそれがある。On the other hand, in the invention of Japanese Utility Model Publication No. 3-55642, a main pattern and a sub-pattern are projected on the surface of the lid body, and a main convex portion forming the main pattern is formed higher than a sub-convex portion forming the sub-pattern. doing. This is also used for sidewalks, but when used for roadways, the main projections protrude above the sub-projections to provide two-step anti-slip action. However, the sub-projections constitute the background in a mesh or circular pattern, and large patterns such as birds and fish are prominently arranged therein as main projections. For this reason, the ratio of the main convex portion contributing to the prevention of slip of the tire of the vehicle is small, and there is a possibility that a difference may occur depending on the approach direction of the tire.
【０００４】[0004]
【発明が解決しようとする課題】本発明は前記の点に着
目してなされたものであり、その課題は、スリップ防止
構成を有する地下構造物用蓋において、特にタイヤ等の
進入方向に拘らず、常に良好なグリップ効果が得られる
ようにすることである。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a lid for an underground structure having an anti-slip structure, particularly irrespective of the direction in which a tire or the like enters. The purpose is to always obtain a good grip effect.
【０００５】また本発明は地下構造物用蓋における凹凸
構造の改良により、蓋に接するタイヤ等のスリップを防
止することを他の課題とするものである。Another object of the present invention is to prevent slippage of a tire or the like in contact with a lid by improving the uneven structure of the lid for an underground structure.
【０００６】[0006]
【課題を解決するための手段】前記の課題は、凹凸構造
として蓋表面に設ける下部突起は十型、Ｙ型のような凹
多角形の平面形状に形成し、下部突起よりも小型で、か
つ多角形の平面形状を有する上部突起を上記下部突起の
上面に形成し、下部突起は蓋表面に前後左右に展開する
とともに、隣接の下部突起又は上部突起のいずれかが異
なる方向を向く平面配置に形成するという構成によって
解決することができる。The object of the present invention is to form a lower projection provided on the surface of the lid as an uneven structure into a concave polygonal planar shape such as a ten-shape or a Y-shape. An upper protrusion having a polygonal planar shape is formed on the upper surface of the lower protrusion, and the lower protrusion is developed on the lid surface in the front-rear and left-right directions, and the adjacent lower protrusion or the upper protrusion has a planar arrangement in which a different direction is directed. The problem can be solved by the configuration of forming.
【０００７】また、上記構成によってタイヤのグリップ
効果を高めることができる。Further, the gripping effect of the tire can be enhanced by the above configuration.
【０００８】[0008]
【発明の実施の形態】本発明に係る地下構造物用蓋はそ
の蓋表面とそこに接するタイヤ或は靴底等との間に生じ
る摩擦を増大することによって、蓋表面上におけるタイ
ヤ、靴底等のスリップを防止するためのものであり、そ
の手段として凹凸構造を備えている。BEST MODE FOR CARRYING OUT THE INVENTION The lid for an underground structure according to the present invention increases the friction generated between the surface of the lid and a tire or shoe sole in contact with the surface of the lid, so that the tire or shoe sole on the lid surface can be increased. And the like, and is provided with a concavo-convex structure.
【０００９】凹凸構造として、蓋表面１１に設ける下部
突起１２は、例えば十型（十字交叉型）、Ｙ型（三叉
型）のような凹多角形の平面形状に形成することができ
る。凹多角形は、少なくとも一つの角が１８０度よりも
大きい多角形のことである。特に本発明に適するのは正
凹多角形ともいうべきものである。適用可能な凹多角形
には前記の他、星型つまり凹角５箇所、凸角５箇所の凹
１０角形、十字星型の凹８角形なども含まれる。下部突
起１２を凹多角形で形成するのは、通常の多角形つまり
凸多角形に比較して十型で１２角、Ｙ型で９角と、角及
び辺が多いこと、それにも拘らず形状を比較的簡単に再
現できることなどが理由となる。これに対して凸多角形
は、角を増やしても円形に近づくだけで却って角部が目
立たなくなり、タイヤ等の引っ掛かりが少なくなる。As the concave / convex structure, the lower protrusion 12 provided on the lid surface 11 can be formed in a concave polygonal planar shape such as a ten-shaped (cross-shaped) or a Y-shaped (tri-shaped). A concave polygon is a polygon in which at least one corner is greater than 180 degrees. Particularly suitable for the present invention is a regular concave polygon. In addition to the above, applicable concave polygons include a star shape, that is, a concave pentagon having five concave angles, a convex pentagon having five convex angles, and a cross star-shaped concave octagon. The lower projection 12 is formed as a concave polygon because the number of corners and sides is 12 in a ten-shape and nine in a Y-shape as compared with a normal polygon, that is, a convex polygon. Is relatively easy to reproduce. On the other hand, a convex polygon merely becomes closer to a circle even if the number of corners is increased, so that the corners become rather inconspicuous, and tires and the like are less likely to be caught.
【００１０】下部突起１２の上面１３には、下部突起１
２よりも小型で、かつ多角形の平面形状を有する上部突
起１４が形成される。この上部突起１４は、蓋表面１１
に直接設けられる下部突起１２の上にさらに付加して２
階建状の突起とするためのもので、このような構造とし
た結果、縦断面形状も凹多角形となる（図２参照）。上
部突起１４は凹多角形でも良いけれども、凸多角形であ
っても良い。凹多角形又は凸多角形に限定されないため
に請求項１には単に多角形とのみ記載されている。凹多
角形でなくても良いとしたのは、下部突起１２よりも上
部突起１４が大分小さくなる場合、角や辺も微小とな
り、凹多角形に限定する意味が少なくなるであろうから
である。On the upper surface 13 of the lower protrusion 12, the lower protrusion 1 is provided.
An upper projection 14 smaller than 2 and having a polygonal planar shape is formed. The upper protrusion 14 is provided on the lid surface 11.
Is additionally provided on the lower projection 12 provided directly on the
It is intended to be a floor-like projection, and as a result of such a structure, the vertical cross-sectional shape also becomes a concave polygon (see FIG. 2). The upper projection 14 may be a concave polygon, but may be a convex polygon. Claim 1 merely describes a polygon because it is not limited to a concave polygon or a convex polygon. The reason why the shape is not necessarily a concave polygon is that if the upper protrusion 14 is much smaller than the lower protrusion 12, the corners and sides will also be minute and the meaning of limiting to a concave polygon will be reduced. .
【００１１】このような下部突起１２及び上部突起１４
からなる個々の凹凸構造の実施例について説明する。図
１は、「十型」の凹多角形からなる平面形状を有する下
部突起１２の例示であり、その基部より上面１３に向か
って台形状の縦断面形状を有する。この例は、図１の４
方向の８個の凸角１５と４個の凹角１６の計１２角を有
する凹１２角形であり、１２箇所の辺１７に加えて傾斜
した凸稜線１８が８箇所、谷線が４箇所タイヤ等の引っ
掛かりに寄与する。図１に示された上部突起１４は、平
面形状が４角形であり、これも台形状の縦断面形状を有
するので４個の凸角１９と４個の辺２１に加えて傾斜し
た凸稜線２２が４箇所、引っ掛かりに寄与する。The lower projection 12 and the upper projection 14 as described above.
Examples of the individual concavo-convex structure composed of FIG. 1 shows an example of a lower projection 12 having a planar shape consisting of a “ten-shaped” concave polygon, and has a trapezoidal vertical cross-sectional shape from its base toward the upper surface 13. This example is shown in FIG.
It is a concave dodecagon having a total of 12 angles of 8 convex angles 15 and 4 concave angles 16 in the direction, in addition to 12 sides 17, 8 inclined convex ridge lines 18, 4 valley lines, tires etc. Contributes to catching. The upper protrusion 14 shown in FIG. 1 has a quadrangular planar shape, and also has a trapezoidal vertical cross-sectional shape, so that in addition to the four convex angles 19 and the four sides 21, an inclined convex ridge line 22 is formed. Contributes to catching at four places.
【００１２】図１に示す上部突起１４は対角線が下部突
起１２の４方向を向くような配置となっている。これを
上部突起１４が下部突起１２に対して平面形状において
４５度回転した状態にあるものとすると、回転なしの状
態に上部突起１４を配置することも可能であり、これを
図３に示す。従って図３に示す上部突起１４は角及び辺
の方向が図１に示した例と４５度異なることになる。し
かし他の構成は符号を援用して示すように同じである。
各図において、２３は上端面を示しており、これは凹凸
構造の最上面である。The upper projections 14 shown in FIG. 1 are arranged such that diagonal lines are directed in four directions of the lower projections 12. Assuming that the upper projections 14 are rotated by 45 degrees in a planar shape with respect to the lower projections 12, the upper projections 14 can be arranged without rotation, as shown in FIG. Therefore, the direction of the corners and sides of the upper protrusion 14 shown in FIG. 3 is different from that of the example shown in FIG. 1 by 45 degrees. However, other configurations are the same as shown with the reference numerals.
In each figure, reference numeral 23 denotes an upper end surface, which is the uppermost surface of the concavo-convex structure.
【００１３】下部突起１２よりも小さくかつ上方へ突出
している上部突起１４の形態は、タイヤや靴底等の食い
込み易さや磨耗の進行を左右すると考えられる。また上
部突起１４が早く磨滅すると下部突起１２が残存し、上
部突起１４の磨滅が遅ければ２階建構造は長期間維持さ
れる。図２は、このために選択し得る上、下両突起１
２、１４の寸法関係を示しており、全高を６とすると、
図２（ａ）では下部突起（１２）４に上部突起（１４）
２の割合、図２（ｂ）では上、下両突起（１２、１４）
各３ずつ、図２（ｃ）では下部突起（１２）２に上部突
起（１４）４の構成である。上部突起１４の大小は、磨
滅のほかタイヤ等に与えるショック等の他の現象とも関
係する。そこで敷設の目的や場所等状況に応じてどのよ
うな形態を選択するかを決定することができる。The shape of the upper protrusion 14 which is smaller than the lower protrusion 12 and protrudes upward is considered to affect the ease of biting of the tire and the sole of the shoe and the progress of wear. If the upper projections 14 wear out early, the lower projections 12 remain, and if the upper projections 14 wear out slowly, the two-story structure is maintained for a long time. FIG. 2 shows the upper and lower projections 1 that can be selected for this.
The dimensional relationship between 2 and 14 is shown, and when the total height is 6,
In FIG. 2A, the lower protrusion (12) 4 is replaced by the upper protrusion (14).
2; upper and lower projections (12, 14) in FIG.
In FIG. 2C, each of the three projections has a lower projection (12) 2 and an upper projection (14) 4. The size of the upper projection 14 is related to other phenomena such as abrasion as well as shock applied to a tire or the like. Therefore, it is possible to determine what form to select in accordance with the purpose of the laying, the place, and the like.
【００１４】なお図２に示す寸法ｄは、縦断面における
上、下両突起１２、１４の凸稜線１８、２２の傾きを決
めるが、一般に、傾きが急な方が緩い場合よりもタイヤ
等の引っ掛かりが大きい。故に上、下両突起１２、１４
の上記形態には、平面形状、下部突起１２と上部突起１
４の高さ（突出量）の配分及び凸稜線１８、２２の傾き
が因子となり、これらを操作することで最適の条件を決
定することができる。十型の平面形状を有する下部突起
１２は、蓋表面１１に前後左右に展開する。隣接の下部
突起１２は、十型とこれを４５度回転したＸ型とを交互
に配置するか（図４参照）、或いは十型のみを配置する
か（図５参照）の配置が可能である。下部突起１２に対
して、その上面１３の上部突起１４を４５度回転した状
態（図１参照）と、回転なしとした状態（図３参照）と
があるので、十型のみを配置した場合には、図５のよう
に上部突起１４が異なる方向を向くことになる。つまり
本発明では、隣接の下部突起１２又は上部突起１４のい
ずれかが異なる方向を向く平面配置に形成されることと
なる。The dimension d shown in FIG. 2 determines the inclination of the protruding ridge lines 18 and 22 of the upper and lower projections 12 and 14 in the vertical cross section. The hook is large. Therefore, the upper and lower projections 12, 14
In the above embodiment, the lower projection 12 and the upper projection 1 have a planar shape.
The distribution of the height (projection amount) of 4 and the inclination of the convex ridge lines 18 and 22 are factors, and by operating these factors, the optimum conditions can be determined. The lower projection 12 having a ten-shaped planar shape is developed on the lid surface 11 from front to back and left and right. The adjacent lower protrusions 12 can be arranged such that the ten-shape and the X-shape obtained by rotating the ten-shape are alternately arranged (see FIG. 4) or only the ten-shape is arranged (see FIG. 5). . The lower protrusion 12 has a state in which the upper protrusion 14 of the upper surface 13 is rotated by 45 degrees (see FIG. 1) and a state in which the lower protrusion 12 is not rotated (see FIG. 3). In FIG. 5, the upper protrusions 14 face different directions as shown in FIG. That is, in the present invention, one of the adjacent lower projections 12 and upper projections 14 is formed in a planar arrangement facing different directions.
【００１５】図４は、正方格子の交点上に下部突起１２
の中心が位置するように配置し、かつ隣接の下部突起１
２と上部突起１４の両方が異なる方向を向く平面配置の
例である。また図５は、六角格子の交点上とそれらの中
心点に下部突起１２の中心が位置するように配置し、か
つ隣接の上部突起１４のみが異なる方向を向く平面配置
の例である。いずれの例でも隣接の下部格子１２、１２
間の隙間２４、２４′は小さくかつ連続している。隙間
２４、２４′は突起が入る広さでも入らない広さでも良
い。なお図４の例のパターンを持った凹凸構造を備えた
地下構造物用蓋１０は図８に示すようになる。FIG. 4 shows that the lower projections 12 are located on the intersections of the square lattice.
Are positioned such that the center of
This is an example of a planar arrangement in which both 2 and the upper protrusion 14 face different directions. FIG. 5 shows an example of a planar arrangement in which the center of the lower projection 12 is arranged on the intersections of the hexagonal lattice and at the center points thereof, and only the adjacent upper projection 14 faces in a different direction. In each case, the adjacent lower grids 12, 12
The gaps 24, 24 'between them are small and continuous. The gaps 24, 24 'may be wide enough for the protrusions or not. The underground structure lid 10 provided with the uneven structure having the pattern shown in FIG. 4 is as shown in FIG.
【００１６】凹凸構造としてＹ型（三叉型）の平面形状
を有する下部突起２５の例を図６に示す。このＹ型の下
部突起２５の平面形状は正凹９角形であり、前記図１、
図３の例と同様に２階建構造とされる上部突起２６は三
角形の平面形状を有する。この例の場合、上部突起は正
三角形のもの２６と逆三角形のもの２６′の２種類が設
定されている。他の構成は前記実施例のものと同様で良
いので符号を援用し、詳細な説明は省略する。上記Ｙ型
突起からなる凹凸構造は図７に示すように、六角格子の
交点上とそれらの中心点（又は三角格子の交点）に下部
突起２５が位置し、かつ隣接の上部突起２６のみが異な
る方向を向く平面配置を持っている。各突起間の隙間２
４″も小さくかつ連続している。図７に示す凹凸構造の
平面パターンを持った地下構造物用蓋１０は図９に示す
ようになる。FIG. 6 shows an example of the lower projection 25 having a Y-shaped (three-pronged) planar shape as the concavo-convex structure. The planar shape of the Y-shaped lower projection 25 is a regular concave octagon, as shown in FIG.
The upper protrusion 26 having a two-story structure has a triangular planar shape as in the example of FIG. In the case of this example, two types of upper projections are set, that is, an equilateral triangle 26 and an inverted triangle 26 '. Since other configurations may be the same as those of the above-described embodiment, reference numerals are used, and detailed description is omitted. As shown in FIG. 7, in the uneven structure composed of the Y-shaped projections, the lower projections 25 are located on the intersections of the hexagonal lattices and their center points (or the intersections of the triangular lattices), and only the adjacent upper projections 26 are different. It has a planar arrangement that points in the direction. Gap 2 between each projection
4 "is also small and continuous. The underground structure lid 10 having the planar pattern of the uneven structure shown in FIG. 7 is as shown in FIG.
【００１７】このような本発明に係る地下構造物用蓋
は、凹凸構造の要素である凹多角形の平面形状を有する
下部突起１２、２５と多角形の平面形状を有する上部突
起１４、２６がその上を通過するタイヤや靴底等に食い
込む結果、食い込みによってつぶれたゴムなどの踏み面
が凸角１５や凹角１６、下部突起１２、２５の辺１７及
び凸稜線１８、或いは上部突起１４、２６の凸角１９や
辺２１及び凸稜線２２に引っ掛かり、グリップ力を向上
させる。In the lid for underground structure according to the present invention, the lower projections 12 and 25 having a concave polygonal planar shape and the upper projections 14 and 26 having a polygonal planar shape are elements of the uneven structure. As a result of biting into a tire, a shoe sole, or the like passing therethrough, the tread surface of rubber or the like crushed by the biting causes the convex angle 15, the concave angle 16, the side 17 and the convex ridge line 18 of the lower projections 12, 25, or the upper projections 14, 26 At the convex angle 19, the side 21 and the convex ridge line 22, thereby improving the grip force.
【００１８】例えば路面に地下構造物用蓋として設置さ
れているマンホール蓋はタイヤによって磨かれて滑り易
くなり、湿潤な状態下にあったり、表面が泥砂等によっ
て膜状に覆われていると特に滑り易くなる。これに対し
本発明では上記のように上、下両突起１２、１４、２
５、２６からなる凹凸構造によってグリップ力が向上し
ているので、タイヤ等はマンホール鉄蓋が設置されてい
る周辺の舗装路面と同様の摩擦抵抗のもとで走行できる
こととなる。従来、自動２輪車や自転車等はマンホール
鉄蓋上で特にスリップ事故を起こし易いことが指摘され
たが本発明によりこの問題を著しく軽減することができ
る。For example, a manhole cover provided as a cover for an underground structure on a road surface is polished by a tire and becomes slippery, and is particularly apt to be in a wet state or when the surface is covered with mud sand or the like in a film form. It becomes slippery. On the other hand, in the present invention, as described above, the upper and lower projections 12, 14, 2
Since the grip force is improved by the uneven structure composed of 5, 26, the tires and the like can run under the same frictional resistance as the paved road surface around which the manhole iron cover is installed. Conventionally, it has been pointed out that motorcycles, bicycles and the like are particularly likely to cause a slip accident on a manhole iron cover, but the present invention can significantly reduce this problem.
【００１９】[0019]
【発明の効果】本発明は以上の如く構成されかつ作用す
るものであるから、十型、Ｙ型のような凹多角形からな
る下部突起とその上面に設けられた多角形からなる上部
突起が異なる方向を向いて配置されることとなり、それ
により地下構造物用蓋上にどの方向から進入してくる車
のタイヤや靴の底等についても同じように良好なグリッ
プ力を得ることができ、スリップ事故発生を抑制するこ
とができるという効果を奏する。Since the present invention is constructed and operates as described above, a lower projection composed of a concave polygon such as a ten-shape or a Y-shape and an upper projection composed of a polygon provided on the upper surface thereof are provided. It will be arranged in different directions, so that it is possible to obtain the same good grip force on the tires and shoe soles of the car entering from any direction on the lid for the underground structure, This produces an effect that occurrence of a slip accident can be suppressed.
【図１】本発明に係る地下構造物用蓋の凹凸構造である
突起の１例を示す平面図。FIG. 1 is a plan view showing an example of a projection which is an uneven structure of a lid for an underground structure according to the present invention.
【図２】（ａ）図１のＩＩ−ＩＩ線の断面図で、小さい
上部突起を有する例。 （ｂ）図１のＩＩ−ＩＩ線の断面図で、中間の上部突起
を有する例。 （ｃ）図１のＩＩ−ＩＩ線の断面図で、大きい上部突起
を有する例。FIG. 2A is a cross-sectional view taken along line II-II of FIG. 1, showing an example having a small upper protrusion. (B) is a cross-sectional view taken along line II-II of FIG. 1 and has an intermediate upper protrusion. (C) is a cross-sectional view taken along line II-II of FIG. 1 and has a large upper protrusion.
【図３】突起の他の例を示す平面図。FIG. 3 is a plan view showing another example of a projection.
【図４】図１の突起による凹凸構造の平面パターンの１
例を示す部分図。FIG. 4 is a plan pattern 1 of the concavo-convex structure formed by the protrusions of FIG.
Partial view showing an example.
【図５】図１と図３の突起による凹凸構造の平面パター
ンの他の例を示す部分図。FIG. 5 is a partial view showing another example of the planar pattern of the concavo-convex structure formed by the protrusions of FIGS. 1 and 3;
【図６】（ａ）突起の第３の例を示す平面図。 （ｂ）図６（ａ）の例の縦断面図。FIG. 6A is a plan view showing a third example of a protrusion. (B) A longitudinal sectional view of the example of FIG. 6 (a).
【図７】図６の例による凹凸構造の平面パターンの他の
例を示す部分図。FIG. 7 is a partial view showing another example of the planar pattern of the uneven structure according to the example of FIG. 6;
【図８】図４のパターンを持ったマンホール鉄蓋の部分
平面図。FIG. 8 is a partial plan view of a manhole iron cover having the pattern of FIG. 4;
【図９】図７のパターンを持ったマンホール鉄蓋の部分
平面図。FIG. 9 is a partial plan view of a manhole iron cover having the pattern of FIG. 7;
───────────────────────────────────────────────────── フロントページの続き (72)発明者 島田 裕史 埼玉県川口市仲町２番19号 長島鋳物株式 会社内 (72)発明者 岸本 義和 兵庫県加古川市加古川町平野24番地の１Ｄ 棟302号 (72)発明者 大森 武夫 岡山県津山市小原161番地12号 (72)発明者 伊藤 譲二 岡山県津山市上河原238番地の４ (72)発明者 星川 勝行 兵庫県神戸市北区泉台５丁目１番17号 (72)発明者 久保田 康弘 奈良県奈良市富雄元町１丁目11番53号 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Shimada 2-19 Nakamachi, Kawaguchi-shi, Saitama Nagashima Foundry Co., Ltd. (72) Inventor Yoshikazu Kishimoto 24F Hirano, 1D Building 302, Hirano, Kakogawa-cho, Kakogawa-shi, Hyogo ( 72) Inventor Takeo Omori 161-12 Obara, Tsuyama-shi, Okayama Prefecture (72) Inventor Joji Ito 238-4, Kamikawara, Tsuyama-shi, Okayama Prefecture (72) Inventor Katsuyuki 5-1-1 Izumidai, Kita-ku, Kobe-shi, Hyogo Prefecture No. 17 (72) Inventor Yasuhiro Kubota 1-111-53 Tomio Motomachi, Nara City, Nara Prefecture
Claims (4)
間の摩擦を増大し、それらの間のスリップを防止するた
めの凹凸構造を備えた地下構造物用蓋であって、凹凸構
造として蓋表面に設ける下部突起は十型、Ｙ型のような
凹多角形の平面形状に形成し、下部突起よりも小型で、
かつ多角形の平面形状を有する上部突起を上記下部突起
の上面に形成し、下部突起は蓋表面に前後左右に展開す
るとともに、隣接の下部突起又は上部突起のいずれかが
異なる方向を向く平面配置に形成したことを特徴とする
地下構造物用蓋。1. A lid for an underground structure provided with an uneven structure for increasing friction between a tire or a shoe sole and the like contacting the surface of the cover and preventing slip between them. The lower projection provided on the lid surface as a structure is formed in a concave polygonal planar shape such as a ten-shaped, Y-shaped, and is smaller than the lower projection,
In addition, an upper protrusion having a polygonal planar shape is formed on the upper surface of the lower protrusion, and the lower protrusion is developed on the lid surface in the front-rear and left-right directions, and a planar arrangement in which either the adjacent lower protrusion or the upper protrusion faces in a different direction. A lid for an underground structure, characterized in that it is formed in a shape.
状を有している請求項１記載の地下構造物用蓋。2. The underground structure lid according to claim 1, wherein the lower projection and the upper projection have a trapezoidal cross-sectional shape.
起の中心が位置し、かつ隣接の下部突起と上部突起の両
方が異なる方向を向く平面配置を有する請求項１記載の
地下構造物用蓋。3. The underground structure according to claim 1, wherein the uneven structure has a planar arrangement in which the center of the lower protrusion is located on the intersection of the square lattice and both the adjacent lower protrusion and upper protrusion are in different directions. Cover.
の中心点に下部突起の中心が位置し、かつ隣接の上部突
起のみが異なる方向を向く平面配置を有する請求項１記
載の地下構造物用蓋。4. The underground structure according to claim 1, wherein the concavo-convex structure has a planar arrangement in which the centers of the lower projections are located on the intersections of the hexagonal lattice and at their center points, and only the adjacent upper projections face in different directions. Lid for things.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9311488A JPH11131517A (en) | 1997-10-27 | 1997-10-27 | Underground structure cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9311488A JPH11131517A (en) | 1997-10-27 | 1997-10-27 | Underground structure cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11131517A true JPH11131517A (en) | 1999-05-18 |
Family
ID=18017846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9311488A Pending JPH11131517A (en) | 1997-10-27 | 1997-10-27 | Underground structure cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11131517A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009046877A (en) * | 2007-08-20 | 2009-03-05 | Asahi Tec Environmental Solutions Corp | Lid for underground structure |
| GB2460164A (en) * | 2008-05-19 | 2009-11-25 | Dudley Thomas Ltd | An access cover with formations to improve grip |
| KR20230084362A (en) * | 2021-12-03 | 2023-06-13 | 한국가로수보호 주식회사 | Non-slip manhole cover having two stage square projection member on the surface |
-
1997
- 1997-10-27 JP JP9311488A patent/JPH11131517A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009046877A (en) * | 2007-08-20 | 2009-03-05 | Asahi Tec Environmental Solutions Corp | Lid for underground structure |
| GB2460164A (en) * | 2008-05-19 | 2009-11-25 | Dudley Thomas Ltd | An access cover with formations to improve grip |
| KR20230084362A (en) * | 2021-12-03 | 2023-06-13 | 한국가로수보호 주식회사 | Non-slip manhole cover having two stage square projection member on the surface |
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