JPS5924715Y2 - Locking device for manhole covers in septic tanks, etc. - Google Patents

Locking device for manhole covers in septic tanks, etc.

Info

Publication number
JPS5924715Y2
JPS5924715Y2 JP11858780U JP11858780U JPS5924715Y2 JP S5924715 Y2 JPS5924715 Y2 JP S5924715Y2 JP 11858780 U JP11858780 U JP 11858780U JP 11858780 U JP11858780 U JP 11858780U JP S5924715 Y2 JPS5924715 Y2 JP S5924715Y2
Authority
JP
Japan
Prior art keywords
manhole cover
manhole
frame
septic tank
head
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
JP11858780U
Other languages
Japanese (ja)
Other versions
JPS5743288U (en
Inventor
喜隆 石川
Original Assignee
ダイキ株式会社
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 by ダイキ株式会社 filed Critical ダイキ株式会社
Priority to JP11858780U priority Critical patent/JPS5924715Y2/en
Publication of JPS5743288U publication Critical patent/JPS5743288U/ja
Application granted granted Critical
Publication of JPS5924715Y2 publication Critical patent/JPS5924715Y2/en
Expired legal-status Critical Current

Links

Description

【考案の詳細な説明】 本考案は汚水を処理する浄化槽のマンホールを蓋するマ
ンホール蓋のロック装置に関する。
[Detailed Description of the Invention] The present invention relates to a locking device for a manhole cover that covers a manhole in a septic tank for treating sewage.

浄化槽はそれの上面側に掃除口となるマンホールを具備
し、そのマンホールには、通常、把持部を持って引き上
げることで取外せるマンホール蓋が落し込まれるように
なっている。
The septic tank has a manhole on its top side that serves as a cleaning opening, and a manhole cover that can be removed by holding the handle and pulling it up is usually inserted into the manhole.

この浄化槽のマンホール蓋は、浄化槽を地中に埋設した
ときに、地表面に露出する状態に敷設されることから、
特に家庭用の浄化槽においては、幼児がいたづらして開
けることがあり、それにより開放するマンホールから幼
児が浄化槽内に落込む事故を起す危険があるので、通常
の把持部を持上げるだけでは開放することのないように
ロックしておくことが望まれている。
The manhole cover of this septic tank is laid so that it is exposed on the ground surface when the septic tank is buried underground.
Particularly in domestic septic tanks, children may be bothered to open them, and there is a risk of the child falling into the septic tank through the manhole being opened. It is desirable to keep it locked to prevent it from happening.

一般のマンホール蓋には、ロック装置を具備するものが
あるが、それらは、マンホール蓋に組付けるのが面倒で
、しかも、水気によりさび付いて動かないようになる問
題がある。
Some common manhole covers are equipped with locking devices, but they are troublesome to assemble to the manhole cover, and furthermore, there is a problem that they rust due to moisture and become immovable.

本考案における目的は、この浄化槽のマンホールに設け
るマンホール蓋に、簡単に組付られ、しかも錆ついて動
かないようになることのないロック装置を提起すること
にある。
An object of the present invention is to provide a locking device that can be easily assembled to a manhole cover provided in a manhole of a septic tank and that will not rust and become immovable.

次に、この目的を達成するための本考案による浄化槽に
おけるマンホール蓋のロック装置を、図示する実施例に
ついて詳述する。
Next, a locking device for a manhole cover in a septic tank according to the present invention for achieving this purpose will be described in detail with reference to an illustrative embodiment.

第1図において、1は図面では一部のみを示しているが
浄化槽本体で、内部に具備する分離室及び曝気室(いず
れも図示していない)により汚水を処理する従来公知の
ものであって、それの躯体上面には、内部に装設せる前
記分離室及び曝気室を掃除点検するためのマンホール1
0a (第2図)を胴内に形成する円筒状のマンホール
枠10が上方に向けて短く立上るように形設してあり、
そのまマンホール枠10の上端の開口部にはマンホール
蓋3と組に作られるリング状のの入口枠2が組付けであ
る。
In Fig. 1, 1 is a septic tank main body, only a part of which is shown in the drawing, and is a conventionally known type of septic tank that treats wastewater using a separation chamber and an aeration chamber (none of which are shown) provided inside. , a manhole 1 is provided on the upper surface of the frame for cleaning and inspecting the separation chamber and aeration chamber installed inside.
A cylindrical manhole frame 10 having a shape 0a (FIG. 2) formed inside the body is shaped so as to rise short upwards.
A ring-shaped entrance frame 2, which is made in combination with a manhole cover 3, is attached to the opening at the upper end of the manhole frame 10.

前記リング状の入口枠2は、浄化槽本体1及びそれに一
体に連続する前記マンホール枠10とは別体の資材で作
られていて、それの底面側の外周には、浄化槽本体1を
土中に埋設する時に、第2図の如くマンホール枠10の
上端の開口部の上面にセットボルト20で一体に固着す
るようにするか、あるいは、セメントで一体に固着する
ための取付フランジ21が設けである。
The ring-shaped entrance frame 2 is made of a material different from the septic tank main body 1 and the manhole frame 10 that is integrally continuous therewith, and the outer periphery of the bottom side of the septic tank main body 1 is formed into When burying, as shown in Figure 2, it is fixed integrally to the upper surface of the opening at the upper end of the manhole frame 10 with set bolts 20, or a mounting flange 21 is provided for fixing it together with cement. .

また、該リング状の入口枠2の内周側には、それの内周
面2aを下方に向い縮径するテーパー面に形成するとと
もに、該リング状の入口枠2内に落し込まれるマンホー
ル蓋3を支持するよう内側に張出す環状の支持棚部22
が形設してあり、その支持棚部22の張出端部には、さ
らに該入口枠2の底面より上昇した位置において該入口
枠2の中心部に向はリング状に張り出す保合段部22
aが形設しである。
Further, on the inner circumferential side of the ring-shaped entrance frame 2, the inner circumferential surface 2a thereof is formed into a tapered surface whose diameter decreases downward, and a manhole cover that is dropped into the ring-shaped entrance frame 2 is formed. An annular support shelf 22 that extends inward to support 3.
At the projecting end of the support shelf section 22, there is further a retaining stage projecting in a ring shape toward the center of the entrance frame 2 at a position elevated from the bottom surface of the entrance frame 2. Part 22
A is the shape.

前記マンホール蓋3は、前述のリング状の入口枠2と同
一の資材で、側断面が下向きのコ字状となるよう底面側
の朴周部に下方に向けて突出するノング状の周壁を具備
する形状に形成しである。
The manhole cover 3 is made of the same material as the ring-shaped entrance frame 2 described above, and is provided with a tongue-shaped peripheral wall that protrudes downward on the bottom side so that the side cross section has a downward U-shape. It is formed into a shape.

該マンホール蓋3の径は、前記リング状の入口枠2のテ
ーパー面とした前記内周面2aの内径より若干小径とし
である。
The diameter of the manhole cover 3 is slightly smaller than the inner diameter of the tapered inner peripheral surface 2a of the ring-shaped entrance frame 2.

また該マンホール蓋3の外周面3aは、前記マンホール
枠2の内周面2aと対応するテーパー面に形成しである
Further, the outer circumferential surface 3a of the manhole cover 3 is formed into a tapered surface corresponding to the inner circumferential surface 2a of the manhole frame 2.

また、上面には把持部33.33が設けである。Furthermore, a grip portion 33.33 is provided on the top surface.

そしてまた、該マンホール蓋3の周縁部で、前述の人口
枠2に設けた保合段部22 aと第4図に示す如く上下
にラップする部位に、後述するロック体4の取付用の取
付穴34.34か゛同第4図にあるように下方に向い次
第に縮径する透孔として形設しである。
Furthermore, on the peripheral edge of the manhole cover 3, a locking body 4, which will be described later, is attached at a portion that overlaps vertically with the retaining step 22a provided on the artificial frame 2, as shown in FIG. The hole 34.34 is formed as a through hole whose diameter gradually decreases downward as shown in FIG.

4はリング状の入口枠2内に落込んだ前記マンホール蓋
3が簡単に開かないようにロックするためのロック体で
ある。
Reference numeral 4 denotes a locking body for locking the manhole cover 3 which has fallen into the ring-shaped entrance frame 2 so that it does not open easily.

該ロック体4は、合成樹脂材により、前記取付穴34に
嵌合するよう下方に向い縮径するコーン状で下半側が中
空の筒状をなす頭部40と、その頭部40の下端周縁か
ら斗周方向に突出する係合鍔44と、その頭部40の底
面中心部から垂下する軸杆部43と、その軸杆部43の
下端から側方に向けて延出する係合アーム42とが一体
に連続する栓状体に成形され、かつ、それの頭部40の
中空にした下半側の外周面にはその下半側の拡縮を容易
にするための切欠溝45が設けられ、また、頭部40の
上面には回転操作するための工具との係合溝41が設け
である。
The lock body 4 is made of a synthetic resin material and includes a cone-shaped head 40 whose diameter decreases downward so as to fit into the mounting hole 34, and a cylindrical shape with a hollow lower half, and a lower peripheral edge of the head 40. An engaging flange 44 protruding from the center in the circumferential direction, an axial rod portion 43 hanging from the center of the bottom surface of the head 40, and an engaging arm 42 extending laterally from the lower end of the axial rod portion 43. A notch groove 45 is provided on the outer peripheral surface of the hollow lower half of the head 40 to facilitate expansion and contraction of the lower half. Further, the upper surface of the head 40 is provided with an engagement groove 41 for engaging a tool for rotational operation.

しかして、この合成樹脂材の成形駒よりなるロック体4
は、前述のマンホール蓋3に設けた取付穴34に対する
組付けを、取付穴34に対し上方がら圧入嵌挿していく
ことで行なう。
Therefore, the lock body 4 made of this molded piece of synthetic resin material
The assembly into the mounting hole 34 provided in the manhole cover 3 described above is carried out by press-fitting into the mounting hole 34 from above.

この取付穴34に対する圧入嵌挿で、ロック体4は、中
空の筒状にした頭部40の下半側が撓んで縮径し、その
頭部40の下端の係合鍔44が取付穴34がら下方に抜
は出たところで拡径復元し、それにより係合鍔44がマ
ンホール蓋3の下面に係合して脱出が阻止され、組付け
は完了する。
By press-fitting into the mounting hole 34, the lower half of the hollow cylindrical head 40 of the lock body 4 is bent and reduced in diameter, and the engagement collar 44 at the lower end of the head 40 is inserted into the mounting hole 34. When the manhole cover 3 is pulled out downward, the diameter expands and returns to its original state, and the engaging collar 44 engages with the lower surface of the manhole cover 3 to prevent the manhole cover 3 from coming out, completing the assembly.

そして、このようにしてマンホール蓋3に組付けたロッ
ク体4は、コーン状の頭部40が、コーン状になってい
る取付穴34に嵌合しているだけの状態となるから、取
付穴34に対し自在に回転し、その頭部40を回転さす
操作により、該頭部40の底面中心部から垂下せる軸杆
部43の下端に設けた係合アーム42が、マンホールの
入口枠2の内周面に設けた係合段部22 aの下面側に
入り込み、マンホール蓋3が幼児のいたずらであけられ
るようになったときに、その係合アーム42の上面42
aが係合段部22 aの下面に衝合してマンホール蓋
3が開放するようになるのを阻止し、閉塞状態にロック
するようになる。
The lock body 4 assembled to the manhole cover 3 in this way is in a state where the cone-shaped head 40 is only fitted into the cone-shaped attachment hole 34, so the attachment hole 34, and by rotating the head 40, the engagement arm 42 provided at the lower end of the shaft portion 43 hanging from the center of the bottom surface of the head 40 engages the manhole entrance frame 2. The upper surface 42 of the engaging arm 42 enters the lower surface side of the engaging step 22a provided on the inner circumferential surface, and when the manhole cover 3 is opened due to a child's mischief, the upper surface 42 of the engaging arm 42
a butts against the lower surface of the engagement step 22a, preventing the manhole cover 3 from opening and locking it in the closed state.

次に作用効果について説明すると、上述の如く構威しで
ある本考案による浄化槽におけるマンホール蓋のロック
装置は、マンホール蓋3に設けるロック体4の取付穴3
4が、下方に向い縮径するコーン状で、また、これに組
付けるロック体4が、合成樹脂材により、下半側を中空
の筒状にしたコーン状の頭部40と、その頭部40の下
端に設けた係合鍔44と、頭部40の底面中心部がら垂
下する軸杆部43と、その軸杆部43の下端に設けた係
合アーム42とを、一体に連続させて成形した成形駒に
なっていて、取付穴34に対し上がら圧入嵌挿すること
で組付けられるようになっているので、マンホール蓋3
に対する組付けがすこぶる簡単になり、しかも、組付け
た状態において、マンホール蓋3をマンホールの入口枠
2に対してロックするための前記係合アーム42及びそ
れをロック位置に回動さすための頭部40などの全ての
部品が一体に連続している合e:、樹脂材の成形体であ
ることから、雨水及び浄化槽本体1内の汚物をがぶるよ
うになっても、錆や腐蝕により機能を損なうようになる
ことがなく、さらに、支持棚部22の張出端部に設けた
係合段部22 aにより、第2図に示している如く、係
合アーム42の係合面となるそれの上面42 aと入口
枠2側の係合面たる係合段部22aの下面との間に、余
裕を形成し得るので、入口枠2の内周面に泥土、汚物な
どが付着しても、ロックとその解除が常に確実にかつ軽
快に行なえるようになる。
Next, to explain the function and effect, the locking device for a manhole cover in a septic tank according to the present invention, which is configured as described above, has an attachment hole 3 of a lock body 4 provided in a manhole cover 3.
4 has a cone shape whose diameter decreases downward, and the lock body 4 attached to this is made of a synthetic resin material and has a cone-shaped head 40 whose lower half is hollow and cylindrical, and the head. An engaging flange 44 provided at the lower end of the head 40, an axial rod portion 43 hanging down from the center of the bottom surface of the head 40, and an engaging arm 42 provided at the lower end of the axial rod portion 43 are integrally continuous. Since it is a molded piece and can be assembled by press-fitting it into the mounting hole 34 from above, the manhole cover 3
In addition, in the assembled state, the engaging arm 42 for locking the manhole cover 3 to the manhole entrance frame 2 and the head for rotating it to the locking position are provided. Since all the parts such as the part 40 are continuous as one body and are made of resin material, even if rainwater and dirt in the septic tank body 1 are washed away, it will not function properly due to rust or corrosion. Furthermore, the engagement step 22a provided at the projecting end of the support shelf 22 serves as an engagement surface for the engagement arm 42, as shown in FIG. Since a margin can be formed between the upper surface 42a of the upper surface 42a and the lower surface of the engagement step part 22a which is the engagement surface on the entrance frame 2 side, mud, dirt, etc. can be prevented from adhering to the inner peripheral surface of the entrance frame 2. Locking and unlocking can always be performed reliably and easily.

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

第1図はマンホール蓋を浄化槽のマンホールの入口枠に
落込んで蓋をした状態の斜視図、第2図はマンホール蓋
のロック状態を示す切断面図、第3図は同上の底面図、
第4図はマンホール蓋のロックを解除ヒた状態の切断側
面図、第5図はロック体の斜視図である。 図面符号の説明、1・・・・・・浄化槽本体、2・・・
・・・入口枠、3・・・・・・マンホール蓋、4・・・
・・・ロック体、10・・・・・・マンホール枠、20
・・・・・・セットボルト、21・・・・・・取付フラ
ンジ、22・・・・・・支持棚部、22 a・・・・・
・係合段部、33・・・・・・マンホール蓋の把手部、
34・・・・・・取付穴、40・・・・・・ロック体の
頭部、41・・・・・・係合溝、42・・・・・・係合
アーム、42 a・・・・・・係合アームの上面、43
・・・・・・軸杆部、44・・・・・・係合鍔、45・
・・・・・切欠溝、10 a・・・・・・マンホール。
Fig. 1 is a perspective view of the manhole cover dropped into the manhole entrance frame of the septic tank and covered, Fig. 2 is a cross-sectional view showing the manhole cover in a locked state, and Fig. 3 is a bottom view of the same as above.
FIG. 4 is a cutaway side view of the manhole cover in an unlocked state, and FIG. 5 is a perspective view of the lock body. Explanation of drawing symbols, 1... Septic tank body, 2...
... Entrance frame, 3... Manhole cover, 4...
... Lock body, 10 ... Manhole frame, 20
...Set bolt, 21...Mounting flange, 22...Support shelf, 22 a...
・Engagement step part, 33... Handle part of manhole cover,
34...Mounting hole, 40...Head of lock body, 41...Engagement groove, 42...Engagement arm, 42 a... ...Top surface of engagement arm, 43
...Shaft rod portion, 44...Engagement flange, 45.
...Notch groove, 10a...Manhole.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 浄化槽本体1の上面側に立設せるマンホール枠10の上
端部に装設するマンホールの入口枠2を、浄化槽本体1
と別にリング状に形威し、その人口枠2の内周側には、
該入口枠2内に落し孔よれるマンホール蓋3の外周縁部
を支承するよう内側に向けて張出す支持棚部22を環状
に形設するとともに、その支持棚部22に該入口枠2の
内側に向けjング状に張出す係合段部22 aを設け、
前記マンホール蓋3の周縁部で前述保合段部22 aと
上下にラップする部位に、下方に向い縮径する取付穴3
4を設け、その取付穴34には、合成樹脂材により、前
記取付穴34に嵌合するコーン状で下半側が中空の筒状
をなす頭部40と、その頭部40の下端周縁から外周方
向に突出する係合鍔44と、その頭部40の底面中心部
から垂下する軸杆部43と、その軸杆部43から側方に
向けて突出する保合アーム42とが、一体に連続して成
形しである栓状のロック体4を、圧入嵌挿してそれの前
記係合鍔44により回転自在に係止せしめ、該ロック体
4の回転により、前記係合アーム42の上面42 aと
前述入口枠2の係合段部22 aの下面とが係脱自在に
係合するよう構成したことを特徴とする浄化槽における
マンホール蓋のロック装置。
The manhole inlet frame 2 installed at the upper end of the manhole frame 10 erected on the top side of the septic tank body 1 is connected to the septic tank body 1.
Separately, it is shaped like a ring, and on the inner circumference of population frame 2,
A support shelf 22 is formed in an annular shape and projects inward to support the outer peripheral edge of the manhole cover 3 that is inserted into the entrance frame 2. An engaging stepped portion 22a is provided that extends inward in a jing-like shape,
At the peripheral edge of the manhole cover 3, a mounting hole 3 whose diameter decreases downward is provided at a portion that overlaps the above-mentioned retaining step portion 22a above and below.
4, and the mounting hole 34 has a cone-shaped head 40 made of a synthetic resin material and a cylindrical shape with a hollow lower half that fits into the mounting hole 34, and an outer circumference from the lower end periphery of the head 40. An engagement collar 44 that projects in the direction, a shaft portion 43 that hangs down from the center of the bottom surface of the head portion 40, and a retaining arm 42 that projects laterally from the shaft portion 43 are integrally continuous. A molded plug-shaped lock body 4 is press-fitted and rotatably locked by the engagement flange 44 of the lock body 4, and as the lock body 4 rotates, the upper surface 42a of the engagement arm 42 A locking device for a manhole cover in a septic tank, characterized in that the locking device for a manhole cover in a septic tank is configured such that the lower surface of the engaging stepped portion 22a of the inlet frame 2 is engaged with the lower surface of the engaging step portion 22a of the inlet frame 2 in a freely engaging and detachable manner.
JP11858780U 1980-08-20 1980-08-20 Locking device for manhole covers in septic tanks, etc. Expired JPS5924715Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11858780U JPS5924715Y2 (en) 1980-08-20 1980-08-20 Locking device for manhole covers in septic tanks, etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11858780U JPS5924715Y2 (en) 1980-08-20 1980-08-20 Locking device for manhole covers in septic tanks, etc.

Publications (2)

Publication Number Publication Date
JPS5743288U JPS5743288U (en) 1982-03-09
JPS5924715Y2 true JPS5924715Y2 (en) 1984-07-21

Family

ID=29479278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11858780U Expired JPS5924715Y2 (en) 1980-08-20 1980-08-20 Locking device for manhole covers in septic tanks, etc.

Country Status (1)

Country Link
JP (1) JPS5924715Y2 (en)

Also Published As

Publication number Publication date
JPS5743288U (en) 1982-03-09

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