JPS5925974Y2 - manhole cover - Google Patents
manhole coverInfo
- Publication number
- JPS5925974Y2 JPS5925974Y2 JP13166679U JP13166679U JPS5925974Y2 JP S5925974 Y2 JPS5925974 Y2 JP S5925974Y2 JP 13166679 U JP13166679 U JP 13166679U JP 13166679 U JP13166679 U JP 13166679U JP S5925974 Y2 JPS5925974 Y2 JP S5925974Y2
- Authority
- JP
- Japan
- Prior art keywords
- manhole cover
- frame
- holder
- cover
- wall
- 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
Links
Description
【考案の詳細な説明】 本考案は、マンホール蓋の改良に関するものである。[Detailed explanation of the idea] The present invention relates to an improvement of a manhole cover.
従来のマンホール蓋１は、第１図に示すように外周より
楕円側の裏面につば部２を周設し、このつば部２を蓋受
は枠３に設けた溝４に入れると共に、蓋１の外周面５を
蓋受は枠３の外壁６の内壁面６１に密着させて、車輌の
通過等によって蓋１がガタ付いたり、ずれたりするのを
防止している。As shown in FIG. 1, a conventional manhole cover 1 has a collar 2 around the back surface on the elliptical side from the outer circumference, and the collar 2 is inserted into a groove 4 provided in a frame 3 for the lid holder. The outer circumferential surface 5 of the lid holder is brought into close contact with the inner wall surface 61 of the outer wall 6 of the frame 3 to prevent the lid 1 from rattling or shifting due to passage of a vehicle or the like.
しかし重量軽減のために蓋１の肉厚を薄くすると、外周
面５の厚さを薄くなるため、第２図に示すように溝４内
に土砂７が堆積してつば部２が持ち上げられると、僅か
な上昇で外周面５が外壁６の上縁６２よりはずれる。However, if the thickness of the lid 1 is made thinner in order to reduce the weight, the thickness of the outer circumferential surface 5 will be made thinner, and as shown in FIG. , the outer circumferential surface 5 is removed from the upper edge 62 of the outer wall 6 by a slight rise.
このため蓋１は、つば部２の外壁面２１が外壁６の内壁
面６１に当るまで移動できるようになるので、両者の間
隔Ｗだけ蓋１はズレうるという大きな欠点が生ずる。Therefore, the lid 1 can be moved until the outer wall surface 21 of the collar 2 touches the inner wall surface 61 of the outer wall 6, resulting in a major drawback that the lid 1 can be displaced by the distance W between the two.
本考案は、上記の欠点を解消したマンホール蓋を提供し
ようとするものである。The present invention aims to provide a manhole cover that eliminates the above-mentioned drawbacks.
以下にその実施例を図面に基いて説明すると、第３〜６
図に示すように外周部１１より楕円側の裏面につば部１
２を周設し、且つ天板１３の肉厚を従来のマンホール蓋
１のそれより薄くしたマンホール蓋１４に於て、外周部
１１の下面に、蓋受は枠１６の外壁１９と当接する突部
１５を適宜の間隔をおいて複数個設ける。Examples 3 to 6 will be explained below based on the drawings.
As shown in the figure, the collar 1 is located on the back side of the oval side from the outer periphery 11.
In the manhole cover 14 in which the top plate 13 is made thinner than that of the conventional manhole cover 1, the cover holder has a protrusion on the lower surface of the outer peripheral part 11 that contacts the outer wall 19 of the frame 16. A plurality of portions 15 are provided at appropriate intervals.
突部１５の長さは天板１３の上面より、その下端に至る
長さＨが、蓋受は枠１６の溝１７の深さＤより長くなる
ように設定する。The length of the protrusion 15 is set so that the length H extending from the upper surface of the top plate 13 to its lower end is longer than the depth D of the groove 17 of the frame 16 of the lid holder.
このように構成して、突部１５が蓋受は枠１６の外壁１
９と当接するようにしたので、第４図に示すように蓋受
は枠１６の溝１７一杯に土砂１８が堆積して、マンホー
ル蓋１４がＤだけ持ち上げられても、外周部１１の下端
が蓋受は枠１６の外壁１９の上端よりはずれることはな
い。With this configuration, the protrusion 15 and the lid holder are connected to the outer wall 1 of the frame 16.
As shown in FIG. 4, even if the groove 17 of the frame 16 is filled with earth and sand 18 and the manhole cover 14 is lifted by D, the lower end of the outer peripheral part 11 will not touch the lid holder. The lid holder does not come off the upper end of the outer wall 19 of the frame 16.
このため従来のマンホール蓋のように、外周部１１が蓋
受は枠１６よりはずれて、つば部１２が蓋受は枠１６の
溝１７内に動きうる範囲一杯にマンホール蓋１４が移動
して、ガタつくことを解消できるものである。For this reason, like a conventional manhole cover, the manhole cover 14 moves to the full extent that it can move, with the outer peripheral part 11 and the cover holder coming off the frame 16, and the collar part 12 and the cover holder moving into the groove 17 of the frame 16. This is something that can eliminate rattling.
本考案は以上説明したような簡単な改良であるが、この
改良によってマンホール蓋の肉厚を薄くしても、蓋受は
枠の溝内に堆積された土砂によって蓋が持ち上げられた
際、蓋の外周部が蓋受は枠よりはずれるという従来装置
の欠点を解決できるものである。The present invention is a simple improvement as explained above, but even if the wall thickness of the manhole cover is thinned by this improvement, the cover holder will not be able to handle the cover when it is lifted by the earth and sand accumulated in the groove of the frame. This solves the drawback of conventional devices in that the outer periphery of the lid holder is detached from the frame.
第１〜２図は従来の、第３〜４図は本考案のマンホール
蓋の使用状態を示す断面図、第５図は本考案のマンホー
ル蓋を示す底面図、第６図は同要部を示す拡大斜視図で
ある。
１１・・・・・・外周部、１２・・・・・・つば部、１
４・・・・・・マンホール蓋、１５・・・・・・突部。Figures 1 and 2 are sectional views showing the conventional manhole cover, Figures 3 and 4 are sectional views showing how the manhole cover of the present invention is used, Figure 5 is a bottom view of the manhole cover of the present invention, and Figure 6 shows the main parts of the same. FIG. 11...Outer periphery, 12...Brim part, 1
4... Manhole cover, 15... Projection.
Claims (1)
ンホール蓋１４において、その外周部１１の下面に、蓋
受は枠１６の外壁１９と当接する突部１５を適宜の間隔
をおいて複数個設け、且つ天板１３の上面より該突起１
５の下端に至る長さＨを蓋受は枠１６の溝１７の深さＤ
より長くしたマンホール蓋。In a manhole cover 14 having a collar 12 on the back surface on the elliptical side of the outer circumference 11, the cover holder has a protrusion 15 at an appropriate interval on the lower surface of the outer circumference 11, which contacts the outer wall 19 of the frame 16. A plurality of protrusions 1 are provided, and the protrusions 1 are provided from the upper surface of the top plate 13.
The length H to the lower end of the lid holder is the depth D of the groove 17 of the frame 16.
A longer manhole cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13166679U JPS5925974Y2 (en) | 1979-09-24 | 1979-09-24 | manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13166679U JPS5925974Y2 (en) | 1979-09-24 | 1979-09-24 | manhole cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5651850U JPS5651850U (en) | 1981-05-08 |
| JPS5925974Y2 true JPS5925974Y2 (en) | 1984-07-28 |
Family
ID=29363323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13166679U Expired JPS5925974Y2 (en) | 1979-09-24 | 1979-09-24 | manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5925974Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0319857Y2 (en) * | 1987-09-28 | 1991-04-26 | ||
| EP3351128A4 (en) | 2015-09-14 | 2019-06-19 | Idemitsu Unitech Co., Ltd. | Bag body provided with zipper tape, bag body, method for producing bag body, and device for producing bag body |
-
1979
- 1979-09-24 JP JP13166679U patent/JPS5925974Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5651850U (en) | 1981-05-08 |
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