JP3041148B2 - Sealed manhole cover - Google Patents
Sealed manhole coverInfo
- Publication number
- JP3041148B2 JP3041148B2 JP4339605A JP33960592A JP3041148B2 JP 3041148 B2 JP3041148 B2 JP 3041148B2 JP 4339605 A JP4339605 A JP 4339605A JP 33960592 A JP33960592 A JP 33960592A JP 3041148 B2 JP3041148 B2 JP 3041148B2
- Authority
- JP
- Japan
- Prior art keywords
- receiving frame
- lid
- manhole cover
- lock mechanism
- tapered surface
- 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 - Lifetime
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、上，下水道や地下電力
線等の地中構造物に作業員等が出入りする際に用いられ
る密閉型マンホール蓋に係り、特に、密閉型でかつロッ
ク型のものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closed-type manhole cover used when workers enter and exit underground structures such as waterworks, sewers and underground power lines, and more particularly to a closed-type and lock-type manhole cover. About things.
【０００２】[0002]
【従来の技術】従来、密閉型マンホール蓋としては、受
枠の内周壁を下方に行くに従って先細りとなるテーパ面
に形成するとともに、蓋体の外周壁をそのテーパ面に合
致するテーパ面に形成し、受枠に蓋体を完全に一致させ
て、マンホール内部に外部から液体（水）が入らないよ
うにしている。2. Description of the Related Art Conventionally, as a closed-type manhole cover, an inner peripheral wall of a receiving frame is formed to have a tapered surface that tapers downward, and an outer peripheral wall of a lid is formed to have a tapered surface that matches the tapered surface. The lid is completely aligned with the receiving frame to prevent liquid (water) from entering the manhole from outside.
【０００３】また、従来のロック型（施錠型）のマンホ
ール蓋としては、蓋体の一端側を受枠にヒンジ機構を介
して回動自在に結合するとともに、他端側にロック機構
を設けて施錠できるようにし、不用意に蓋が開かれない
ようにしている（例えば、実公昭５８−３８９２号公
報）。As a conventional lock type (locking type) manhole cover, one end of the cover is rotatably connected to a receiving frame via a hinge mechanism, and a locking mechanism is provided at the other end to provide locking. To prevent the lid from being opened carelessly (for example, Japanese Utility Model Publication No. 58-3892).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の密閉型マンホール蓋にロック機構を組込んで、密閉
型でかつロック型としたときは、密閉の効果が低下する
欠点があった。However, when a lock mechanism is incorporated in the above-mentioned conventional closed-type manhole cover to be a closed-type and lock-type, the sealing effect is reduced.
【０００５】なぜならば、ロック機構の操作は、蓋体の
外側から行われるために、ロック機構の一部が蓋体の外
側に位置していなければならず、ロック機構を介してマ
ンホール内部に水が漏れるからである。[0005] Because the operation of the lock mechanism is performed from the outside of the lid, a part of the lock mechanism must be located outside the lid, and water enters the manhole through the lock mechanism. Is leaked.
【０００６】このような欠点を解決するために、ロック
機構を水密構造とすることも考えられるが、水密構造に
すると、ロック機構の各部品を精密加工をしなければな
らずコスト高になる新たな問題点が発生する。In order to solve such a drawback, it is conceivable that the lock mechanism has a watertight structure. However, if the lock mechanism is made watertight, each part of the lock mechanism must be precision-machined, resulting in an increase in cost. Problems arise.
【０００７】しかも、マンホールの性質上、外圧が加わ
るために、精密なロック機構に形成しても、すぐに隙間
が生じて水密性が失われるおそれがある。In addition, since an external pressure is applied due to the nature of the manhole, even if the lock mechanism is formed precisely, there is a possibility that a gap is immediately formed and the watertightness is lost.
【０００８】そこで、本発明は、上記欠点を解決するた
めになされたものであって、その目的は、ロック型の密
閉型マンホール蓋を簡単な構造で安価で製造することが
できる密閉型マンホール蓋を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a closed type manhole cover which can be manufactured at a low cost with a simple structure. Is to provide.
【０００９】[0009]
【課題を解決するための手段】本発明に係る密閉型マン
ホール蓋は、上記目的を達成するために、受枠の内周壁
に下方に行くに従って先細りとなるテーパ面を有すると
ともに、蓋体の外周面にその受枠のテーパ面に合致する
テーパ面を有し、かつその蓋体の一端側をその受枠に回
転自在に結合するとともに、その蓋体の他端側とその受
枠との間にロック機構を設けた密閉型マンホール蓋にお
いて、前記蓋体の他端側の上部にはＯリングにより水密
状に保たれるキャップ部材を設けるとともに、そのキャ
ップ部材の下方には、前記ロック機構の操作部と、上部
のみ開口し、かつ受枠側はその蓋体の外周面と一体的に
構成されている袋状の鉤穴とを設けたことを特徴として
いる。In order to achieve the above object, a closed-type manhole cover according to the present invention has a tapered surface which tapers down on an inner peripheral wall of a receiving frame and an outer peripheral surface of a lid body. The lid has a tapered surface that matches the tapered surface of the receiving frame, and one end of the lid is rotatably coupled to the receiving frame, and a locking mechanism is provided between the other end of the lid and the receiving frame. In the provided hermetic manhole cover, a cap member that is kept watertight by an O-ring is provided on an upper portion on the other end side of the cover, and an operation section of the lock mechanism is provided below the cap member; It is characterized in that only the upper part is opened, and a bag-shaped hookhole formed integrally with the outer peripheral surface of the lid is provided on the receiving frame side.
【００１０】[0010]
【作用】上記構成において、受枠と蓋体とはテーパ面で
合致して水密状に保たれるとともに、ロック機構の操作
部もＯリングにより水密状に保たれるキャップ部材で覆
われる。従って、マンホール内部は、外部と連通すると
ころがない。また、ロック機構は、キャップ部材を外し
て操作される。さらに、鉤穴は、袋状に形成されている
ので、その鉤穴から水が侵入することがない。In the above construction, the receiving frame and the lid are matched to each other by the tapered surface and are kept watertight, and the operating portion of the lock mechanism is covered by the cap member kept watertight by the O-ring. Therefore, the inside of the manhole has no place to communicate with the outside. The lock mechanism is operated by removing the cap member. Furthermore, since the hook is formed in a bag shape, water does not enter through the hook.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面に基いて説明す
る。図１は一実施例に係る密閉型マンホール蓋の平面
図、図２は図１のＡ−Ａ線拡大断面図、図３は図１のＢ
−Ｂ線拡大断面図である。Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view of a closed type manhole cover according to one embodiment, FIG. 2 is an enlarged sectional view taken along line AA of FIG. 1, and FIG. 3 is B of FIG.
FIG. 4 is an enlarged cross-sectional view taken along line B.
【００１２】受枠１の内周壁１ａは、下方に行くに従っ
て先細りとなるテーパ面に形成されている。そして、こ
の受枠１に挿入される蓋体２の外周壁２ａは、受枠１の
テーパ面に合致するテーパ面が形成されている。従っ
て、受枠１に蓋体２が挿入されたときは、受枠１と蓋体
２とは水密状に保たれる。The inner peripheral wall 1a of the receiving frame 1 is formed as a tapered surface that tapers downward. The outer peripheral wall 2 a of the lid 2 inserted into the receiving frame 1 has a tapered surface that matches the tapered surface of the receiving frame 1. Therefore, when the lid 2 is inserted into the receiving frame 1, the receiving frame 1 and the lid 2 are kept watertight.
【００１３】蓋体２の一端側（図１において右側）は、
図示しないが周知のヒンジ機構を介して受枠１と回動自
在に結合されている。すなわち、そのヒンジ機構は、受
枠１の内側に穴あきの突片が一体的に設けられていると
ともに、その突片の穴に蓋体２の裏側に一体的に設けら
れた係止片が挿入されるように構成されている。One end (right side in FIG. 1) of the lid 2 is
Although not shown, it is rotatably connected to the receiving frame 1 via a well-known hinge mechanism. That is, in the hinge mechanism, a perforated projecting piece is integrally provided inside the receiving frame 1, and a locking piece integrally provided on the back side of the lid 2 is inserted into the hole of the projecting piece. It is configured to:
【００１４】蓋体２の他端側（図１において左側）の上
部にはキャップ部材３が設けられている。このキャップ
部材３は、Ｏリング４を備えた雄ねじ５から構成されて
いる。従って、蓋体２には、その雄ねじ５に対応する雌
ねじを有する貫通孔６が設けられており、しかも、キャ
ップ部材３は専用工具（図示せず）を用いて取外しでき
るように構成されている。A cap member 3 is provided on an upper portion on the other end side (left side in FIG. 1) of the lid 2. The cap member 3 is composed of a male screw 5 having an O-ring 4. Therefore, the cover 2 is provided with a through hole 6 having a female screw corresponding to the male screw 5, and the cap member 3 is configured to be removable using a dedicated tool (not shown). .
【００１５】ロック機構Ｒは、キャップ部材３の下方に
位置する蓋体２と一体的に形成された取付片７に設けら
れている。すなわち、このロック機構Ｒは、取付片７に
回動自在に設けられるとともに、下方に垂架するボルト
（本発明の操作部に該当する）８と、ボルト８の下端に
固定され、かつ水平方向に伸びる係止片９とを有してい
る。そして、この係止片９は、ボルト８の回りに設けら
れたリング部材１０により、取付片７との間隔が所定距
離に保たれているとともに、リング部材１０の回りに配
置されたコイルばね１１により、常時、下方へ付勢され
るように構成されている。The lock mechanism R is provided on a mounting piece 7 formed integrally with the lid 2 located below the cap member 3. That is, the lock mechanism R is rotatably provided on the mounting piece 7, and is fixed to a lower end of the bolt 8 (corresponding to the operation unit of the present invention) and a lower end of the bolt 8, and is horizontally fixed. And a locking piece 9 extending in the direction. The locking piece 9 is maintained at a predetermined distance from the mounting piece 7 by a ring member 10 provided around the bolt 8, and a coil spring 11 disposed around the ring member 10. Thus, it is configured to be constantly urged downward.
【００１６】ロック機構Ｒは、キャップ部材３を専用工
具を用いて蓋体２から外し、ボルト８の頭部に設けられ
ている凹部８ａに操作棒（図示せず）を挿入して回動さ
せると、係止片９が受枠１の内側下部に設けられた係合
部１ｂに出入りし、施錠，解錠が行われる。The lock mechanism R removes the cap member 3 from the lid 2 using a special tool, inserts an operation rod (not shown) into a concave portion 8a provided on the head of the bolt 8, and rotates the same. Then, the locking piece 9 moves into and out of the engaging portion 1b provided at the lower portion inside the receiving frame 1, and locking and unlocking are performed.
【００１７】ロック機構Ｒを解錠して蓋体２を開けると
きは、ロック機構Ｒの隣りに設けられた鉤穴１１に、図
示しない専用の工具を係合させて行われる。この鉤穴１
１は、上部のみ開口した袋状を呈している。しかも、鉤
穴１１の受枠１側は蓋体２の外周壁２ａと連続したテー
パ面に形成されている。したがって、この鉤穴１１部分
からマンホール内に水が浸入するおそれがない。When the cover 2 is opened by unlocking the lock mechanism R, a dedicated tool (not shown) is engaged with a hook hole 11 provided adjacent to the lock mechanism R. This hookhole 1
1 has a bag-like shape opened only at the upper part. Moreover, the receiving frame 1 side of the hook hole 11 is formed in a tapered surface continuous with the outer peripheral wall 2 a of the lid 2. Therefore, there is no possibility that water enters the manhole from the hook hole 11 portion.
【００１８】以上のように、本実施例に係る密閉型マン
ホール蓋は、受枠１と蓋体２とはテーパ面で水密に合致
されるとともに、ロック機構Ｒもキャップ部材３で水密
的に覆われるので、マンホール蓋の外部から内部に水が
漏れるおそれがない。As described above, in the closed type manhole cover according to the present embodiment, the receiving frame 1 and the cover 2 are tapered so as to be watertight, and the lock mechanism R is also covered with the cap member 3 in a watertight manner. Therefore, there is no possibility that water leaks from the outside of the manhole cover to the inside.
【００１９】[0019]
【発明の効果】本発明に係る密閉型マンホール蓋は、受
枠の内周壁に下方に行くに従って先細りとなるテーパ面
を有するとともに、蓋体の外周面にその受枠のテーパ面
に合致するテーパ面を有し、かつその蓋体の一端側をそ
の受枠に回転自在に結合するとともに、その蓋体の他端
側とその受枠との間にロック機構を設けた密閉型マンホ
ール蓋において、前記蓋体の他端側の上部にはＯリング
により水密状に保たれるキャップ部材を設けるととも
に、そのキャップ部材の下方には、前記ロック機構の操
作部と、上部のみ開口し、かつ受枠側はその蓋体の外周
面と一体的に構成されている袋状の鉤穴とを設けたの
で、密閉型マンホール蓋にロック機構を付加しても密閉
性が失われることがなく、また、鉤穴は袋状なので、こ
こからの水の浸入のおそれもない。しかも構造が簡単で
あるので安価に製造することができる。The closed type manhole cover according to the present invention has a tapered surface which tapers down toward the inner peripheral wall of the receiving frame, and a tapered surface which matches the tapered surface of the receiving frame on the outer peripheral surface of the lid. And a rotatable connection of one end of the lid to the receiving frame, and a locking mechanism provided with a lock mechanism between the other end of the lid and the receiving frame. A cap member which is kept watertight by an O-ring is provided at the upper portion on the other end side, and below the cap member, only the operation portion of the lock mechanism and the upper portion are opened, and the receiving frame side has a lid body. And a bag-shaped hookhole integrally formed with the outer surface of the closed manhole cover, so that even if a lock mechanism is added to the closed-type manhole cover, the sealing performance is not lost. So, the infiltration of water from here No Re. Moreover, since the structure is simple, it can be manufactured at low cost.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の一実施例に係る密閉型マンホール蓋の
平面図である。FIG. 1 is a plan view of a closed type manhole cover according to an embodiment of the present invention.
【図２】図１のＡ−Ａ線拡大断面図である。FIG. 2 is an enlarged sectional view taken along line AA of FIG.
【図３】図１のＢ−Ｂ線拡大断面図である。FIG. 3 is an enlarged sectional view taken along line BB of FIG. 1;
１ 受枠 １ａ 内周壁 ２ 蓋体 ２ａ 外周壁 ３ キャップ部材 ８ ボルト（操作部） １１ 鉤穴 Ｒ ロック機構 DESCRIPTION OF SYMBOLS 1 Receiving frame 1a Inner peripheral wall 2 Lid 2a Outer peripheral wall 3 Cap member 8 Bolt (operation part) 11 Hook hole R Lock mechanism
Claims (1)
りとなるテーパ面を有するとともに、蓋体の外周面にそ
の受枠のテーパ面に合致するテーパ面を有し、かつその
蓋体の一端側をその受枠に回転自在に結合するととも
に、その蓋体の他端側とその受枠との間にロック機構を
設けた密閉型マンホール蓋において、 前記蓋体の他端側の上部にはＯリングにより水密状に保
たれるキャップ部材を設けるとともに、そのキャップ部
材の下方には、前記ロック機構の操作部と、上部のみ開
口し、かつ受枠側はその蓋体の外周面と一体的に構成さ
れている袋状の鉤穴とを設けたことを特徴とする密閉型
マンホール蓋。An inner peripheral wall of a receiving frame has a tapered surface that tapers downward as it goes down, an outer peripheral surface of a lid body has a tapered surface that matches the tapered surface of the receiving frame, and one end of the lid body. Is rotatably connected to the receiving frame, and a closed-type manhole cover provided with a lock mechanism between the other end of the lid and the receiving frame. A watertight cap member is provided, and below the cap member, only the operation part of the lock mechanism and the upper part are opened, and the receiving frame side is integrally formed with the outer peripheral surface of the lid. A closed manhole cover characterized by having a bag-shaped hook hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4339605A JP3041148B2 (en) | 1992-11-25 | 1992-11-25 | Sealed manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4339605A JP3041148B2 (en) | 1992-11-25 | 1992-11-25 | Sealed manhole cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06158673A JPH06158673A (en) | 1994-06-07 |
| JP3041148B2 true JP3041148B2 (en) | 2000-05-15 |
Family
ID=18329070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4339605A Expired - Lifetime JP3041148B2 (en) | 1992-11-25 | 1992-11-25 | Sealed manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3041148B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6688806B2 (en) * | 2001-08-21 | 2004-02-10 | Huan-Chang Kuan | Jump-proof manhole-handhole |
| US7144189B1 (en) | 2002-09-06 | 2006-12-05 | Brad Bongiovanni | Locking cover for wells and underground tanks |
| KR100684463B1 (en) * | 2005-11-10 | 2007-02-22 | 이재덕 | The manhole that the level control is possible |
| JP2014173365A (en) * | 2013-03-11 | 2014-09-22 | Emergency:Kk | Manhole cover device |
| KR200483387Y1 (en) * | 2016-01-05 | 2017-05-08 | 정문식 | Manhole Inner Cover |
-
1992
- 1992-11-25 JP JP4339605A patent/JP3041148B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06158673A (en) | 1994-06-07 |
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