JP2008231860A - Drain cover mounting structure - Google Patents

Drain cover mounting structure Download PDF

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Publication number
JP2008231860A
JP2008231860A JP2007076234A JP2007076234A JP2008231860A JP 2008231860 A JP2008231860 A JP 2008231860A JP 2007076234 A JP2007076234 A JP 2007076234A JP 2007076234 A JP2007076234 A JP 2007076234A JP 2008231860 A JP2008231860 A JP 2008231860A
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lid
hole
seal
receiving frame
mounting structure
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Japanese (ja)
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Kazuto Kobayashi
一人 小林
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Priority to JP2007076234A priority Critical patent/JP2008231860A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain cover mounting structure capable of preventing degradation of a sealing property due to sand even when the drain cover is fitted to a cylindrical receiving frame after the sand enters inside the cylindrical receiving frame upon removing the drain cover from the cylindrical receiving frame. <P>SOLUTION: The drain cover mounting structure comprises a cylindrical receiving frame 1 in which a cover fitting hole part 3 and a sealing hole part 4 having a smaller diameter than that of the cover fitting hole part 3 are continuously formed downwards and a ring-like supporting step part 5 is formed between the cover fitting hole part 3 and the sealing hole part 4, a drain cover 2 including a plate-like cover body 10 and an insertion cylinder 11 which is mounted on a lower surface of the cover body 10 and is provided with a ring-like channel 12 on the outer peripheral surface extending in the peripheral direction, and a seal ring 13 held in the ring-like channel 12. The cover body 10 is fitted to the cover fitting hole part 3 and is supported on the ring-like supporting step part 5. The insertion cylinder 11 is inserted into the sealing hole part 4, and the seal ring 13 is air-tightly and elastically brought into contact with an inner peripheral surface of the sealing hole part 4. Further, a sealing surface 4a of the sealing hole part 4 is formed to have the angle that the sand entering from an upper opening end of the cylindrical receiving frame 1 can fall off. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、例えば排水桝やマンホールの筒状受枠に排水蓋を着脱可能に取り付ける排水蓋取付構造に関するものである。   The present invention relates to a drainage lid mounting structure in which a drainage lid is detachably attached to, for example, a drainage trough or a cylindrical receiving frame of a manhole.

一般に、排水枡やマンホールの上端部には筒状受枠が設けられ、この筒状受枠には排水蓋が取り付けられているのが普通である。この排水蓋は、筒状受枠の開口端部に嵌合される板状の蓋本体と、この蓋本体の下面に形成され且つ筒状受枠内に挿入された挿入筒を備えている。   Generally, a cylindrical receiving frame is provided at the upper end of a drainage basin or a manhole, and a drainage lid is usually attached to the cylindrical receiving frame. The drainage lid includes a plate-like lid main body fitted to the opening end of the cylindrical receiving frame, and an insertion cylinder formed on the lower surface of the lid main body and inserted into the cylindrical receiving frame.

従来、筒状受枠の開口端部内に第1,第2環状段差面を階段状に形成する一方、挿入筒の上端部外周面に蓋本体の下面に沿って周方向に延びる環状溝を形成して、この環状溝にシールリングを保持させ、蓋本体を第1環状段差面に支持させたときに、シールリングが蓋本体の下面と第2環状段差面に気密に密着するようにした排水蓋取付構造が知られている(例えば、特許文献1参照)。
特許第384846号公報
Conventionally, the first and second annular stepped surfaces are formed stepwise in the opening end of the cylindrical receiving frame, while the annular groove extending in the circumferential direction along the lower surface of the lid body is formed on the outer peripheral surface of the upper end of the insertion tube. Thus, when the seal ring is held in the annular groove and the lid main body is supported by the first annular step surface, the drain ring lid is hermetically adhered to the lower surface of the lid body and the second annular step surface. A mounting structure is known (see, for example, Patent Document 1).
Japanese Patent No. 384846

しかし、排水枡やマンホールの設置場所では、排水蓋が地表面と略同じ高さに配置されるため、排水蓋を筒状受枠から取り外したとき、第1,第2環状段差面等に砂が溜まるものであった。しかも、排水蓋と筒状受枠との間のシールは、蓋本体の下面と第2環状段差面との間でシールリングを圧縮することにより行っていた。   However, at the place where the drainage basin or manhole is installed, the drainage lid is arranged at almost the same height as the ground surface. Therefore, when the drainage lid is removed from the cylindrical receiving frame, sand is deposited on the first and second annular step surfaces. It was an accumulation. In addition, the seal between the drain lid and the cylindrical receiving frame is performed by compressing the seal ring between the lower surface of the lid body and the second annular step surface.

このため、第2環状段差面に砂がある状態で、排水蓋を筒状受枠内に装着すると、シール性が低下するものであった。   For this reason, if the drain lid is mounted in the cylindrical receiving frame with sand on the second annular step surface, the sealing performance is lowered.

そこで、この発明は、筒状受枠から排水蓋を取り外す際に筒状受枠内に砂が入った後、排水蓋を筒状受枠に取り付けても、砂によるシール性の低下を防止できる排水蓋取付構造を提供することを目的とするものである。   Accordingly, the present invention provides a drainage lid attachment that can prevent deterioration of the sealing performance due to sand even when the drainage lid is attached to the cylindrical receiving frame after sand has entered the cylindrical receiving frame when the drainage lid is removed from the cylindrical receiving frame. The purpose is to provide a structure.

この目的を達成するため、この発明は、蓋嵌合穴部及び該蓋嵌合穴部より小径のシール穴部が下方に向けて連設され且つ前記蓋嵌合穴部とシール穴部との間に環状支持段部が形成された筒状受枠と、板状の蓋本体及び該蓋本体の下面に設けられ且つ外周面に周方向に延びる環状溝が設けられた挿入筒を有する排水蓋と、前記環状溝に保持されたシールリングとを備え、前記蓋本体は前記蓋嵌合穴部に嵌合されていると共に前記環状支持段部上に支持され、前記挿入筒は前記シール穴部に挿入され、前記シールリングは前記シール穴部の内周面に気密に弾接された排水蓋取付構造であって、前記シール穴部のシール面は前記筒状受枠の上部開口端から浸入する砂を下方に落下可能な角度に形成されている排水蓋取付構造としたことを特徴とする。   In order to achieve this object, the present invention provides a lid fitting hole portion and a seal hole portion having a smaller diameter than the lid fitting hole portion, which are continuously provided downward, and the lid fitting hole portion and the seal hole portion. A tubular receiving frame having an annular support step formed therebetween, a drain lid having a plate-like lid body and an insertion cylinder provided on the lower surface of the lid body and provided with an annular groove extending in the circumferential direction on the outer circumferential surface; A seal ring held in the annular groove, the lid body is fitted in the lid fitting hole and supported on the annular support step, and the insertion tube is placed in the seal hole. The drainage lid mounting structure is inserted and the seal ring is elastically elastically contacted with the inner peripheral surface of the seal hole portion, and the seal surface of the seal hole portion is sand that enters from the upper opening end of the cylindrical receiving frame. It is characterized by having a drain lid mounting structure formed at an angle that allows it to fall downward

この構成によれば、筒状受枠から排水蓋を取り外す際に筒状受枠内に砂が入った後、排水蓋を筒状受枠に取り付けても、砂によるシール性の低下を防止できる。   According to this configuration, even when the drain lid is attached to the cylindrical receiving frame after the sand has entered the cylindrical receiving frame when the drain lid is removed from the cylindrical receiving frame, it is possible to prevent deterioration of the sealing performance due to the sand.

以下、この発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1〜図3において、1は排水桝の上端部に設けられる筒状受枠、2は筒状受枠1の排水蓋である。   In FIG. 1 to FIG. 3, 1 is a cylindrical receiving frame provided at the upper end portion of the drainage tank, and 2 is a drainage lid of the cylindrical receiving frame 1.

この筒状受枠1内には、蓋嵌合穴部3と蓋嵌合穴部3より小径のシール穴部4が下方に向けて連設されている。そして、蓋嵌合穴部3とシール穴部4との間には環状支持段部5が形成されている。   In the cylindrical receiving frame 1, a lid fitting hole 3 and a seal hole 4 having a smaller diameter than the lid fitting hole 3 are continuously provided downward. An annular support step 5 is formed between the lid fitting hole 3 and the seal hole 4.

このシール穴部4は、下方に向かうに従って徐々に縮径するテーパ状のシール面4aを有している。尚、シール面4aは、図2では略45°に形成されているが、必ずしも45°に形成されている必要はない。要は、筒状受枠1に上方から流入する砂等がシール面4aに堆積せずに落下可能な角度であれば、シール面4aの角度はいずれであっても良い。   The seal hole 4 has a tapered seal surface 4a that gradually decreases in diameter as it goes downward. Although the seal surface 4a is formed at approximately 45 ° in FIG. 2, it does not necessarily have to be formed at 45 °. In short, the angle of the seal surface 4a may be any as long as sand or the like flowing from above into the cylindrical receiving frame 1 can be dropped without being deposited on the seal surface 4a.

また、シール面4aの下端部には筒状部6が形成され、この筒状部6内には蓋係止穴部6aが形成されている。また、筒状部6には下端に開放する切欠7が周方向に等ピッチで多数形成されている。これにより、筒状部6には多数の切欠7間に弾性変形可能な板部8が形成されている。この板部8の基部内面には係止突起9が第1係止部として形成されている。   A cylindrical portion 6 is formed at the lower end of the seal surface 4a, and a lid locking hole 6a is formed in the cylindrical portion 6. The cylindrical portion 6 is formed with a large number of notches 7 opened at the lower end at equal pitches in the circumferential direction. Thus, a plate portion 8 that can be elastically deformed is formed between the plurality of notches 7 in the cylindrical portion 6. A locking protrusion 9 is formed as a first locking portion on the inner surface of the base portion of the plate portion 8.

また、排水蓋2は、板状で円形の蓋本体10と、この蓋本体10の下面に同心に突設された挿入筒11を有する。この挿入筒11は蓋本体10に連設された基部を有し、この基部の外周面には周方向に延びる環状溝12が形成されている。この環状溝12には、シールリング13が保持されている。また、挿入筒11の下端部外周面には周方向に延びる環状係止溝14が第2係止部として形成されている(図4参照)。   Further, the drain lid 2 has a plate-like circular lid body 10 and an insertion cylinder 11 that projects concentrically on the lower surface of the lid body 10. The insertion cylinder 11 has a base portion connected to the lid body 10, and an annular groove 12 extending in the circumferential direction is formed on the outer peripheral surface of the base portion. A seal ring 13 is held in the annular groove 12. Moreover, the annular locking groove 14 extended in the circumferential direction is formed in the outer peripheral surface of the lower end part of the insertion cylinder 11 as a 2nd locking part (refer FIG. 4).

そして、蓋本体10は、蓋嵌合穴部3内に嵌合されていると共に、環状支持段部5に支持されている。また、係止突起9は環状係止溝14に係止されている。しかも、シールリング13は、この係止突起9を環状係止溝14に係止させることにより、シール面4aに気密に弾接させられている。   The lid body 10 is fitted in the lid fitting hole 3 and supported by the annular support step 5. Further, the locking projection 9 is locked in the annular locking groove 14. In addition, the seal ring 13 is elastically brought into elastic contact with the seal surface 4 a by locking the locking protrusion 9 in the annular locking groove 14.

このような構成においては、排水桝の点検やメインテナンスを行うために、排水蓋2を筒状受枠1から取り外したときに、砂等が筒状受枠1内に流入することもある。この流入した砂は環状支持段部5に溜まる。   In such a configuration, sand or the like may flow into the cylindrical receiving frame 1 when the drain lid 2 is removed from the cylindrical receiving frame 1 in order to inspect and maintain the drainage basin. This inflowing sand accumulates in the annular support step 5.

この場合において、排水蓋2を筒状受枠1に取り付ける前に、環状支持段部5に溜まった砂をシール面4a側に掃き出して清掃する。この際に、掃き出された砂はシール面4aに沿って下方に流下し、シール面4aに溜まることがない。   In this case, before the drain lid 2 is attached to the cylindrical receiving frame 1, the sand accumulated in the annular support step 5 is swept out to the seal surface 4 a side and cleaned. At this time, the sand that has been swept out flows down along the seal surface 4a and does not accumulate on the seal surface 4a.

また、点検やメインテナンスを行った後に、挿入筒11を筒状受枠1内に挿入する。この際、挿入筒11の下端部は、係止突起9を乗り越えて筒状受枠1の板部8を弾性力に抗して外方に変形させる。このような挿入に伴い、環状係止溝14が係止突起9に臨むと、係止突起9は板部8の弾性力により環状係止溝14にクリック感を生じさせながら係合する。   Further, after performing inspection and maintenance, the insertion cylinder 11 is inserted into the cylindrical receiving frame 1. At this time, the lower end portion of the insertion tube 11 gets over the locking projection 9 and deforms the plate portion 8 of the cylindrical receiving frame 1 outwardly against the elastic force. With such insertion, when the annular locking groove 14 faces the locking projection 9, the locking projection 9 engages with the annular locking groove 14 while generating a click feeling by the elastic force of the plate portion 8.

この際、蓋本体10は、蓋嵌合穴部3内に嵌合されると共に、環状支持段部5に支持される。しかも、シールリング13は、この係止突起9を環状係止溝14に係止させることにより、シール面4aに気密に弾接させられる。このシール面4aには、砂等が堆積していないので、シールリング13がシール面4aで砂等により傷ついたり、シールリング13がシール面4aから部分的に浮いてシール性が損なわれるようなことはない。
(変形例)
また、上述した実施例では、シール穴4のシール面4aをテーパ状に形成して傾斜させた構造としたが、必ずしもこれに限定されるものではない。例えば、図5〜図7に示したようにシール穴4のシール面4aを略垂直に形成して、このシール面4aにシールリング13を弾接させるようにしても良い。
At this time, the lid body 10 is fitted into the lid fitting hole 3 and supported by the annular support step 5. In addition, the seal ring 13 is elastically brought into elastic contact with the seal surface 4 a by locking the locking protrusion 9 in the annular locking groove 14. Since sand or the like is not deposited on the seal surface 4a, the seal ring 13 may be damaged by the sand or the like on the seal surface 4a, or the seal ring 13 may partially float from the seal surface 4a and the sealing performance may be impaired. There is nothing.
(Modification)
In the above-described embodiment, the seal surface 4a of the seal hole 4 is tapered and inclined. However, the present invention is not limited to this. For example, as shown in FIGS. 5 to 7, the seal surface 4a of the seal hole 4 may be formed substantially vertically, and the seal ring 13 may be elastically contacted with the seal surface 4a.

この場合には、蓋係止穴部6aとシール穴4との間に環状段差面15が形成される。しかも、環状段差面15とシールリング13との間には所定の隙間16が形成されている。この隙間は、流入する砂が環状段差面15に堆積しても、この砂にシールリング13が当たらない程度の寸法に形成されている。他の構成は、図1〜図4に示した実施例と同じであるので、その説明は省略する。   In this case, an annular step surface 15 is formed between the lid locking hole 6 a and the seal hole 4. In addition, a predetermined gap 16 is formed between the annular step surface 15 and the seal ring 13. This gap is formed in such a size that the seal ring 13 does not hit the sand even when the inflowing sand accumulates on the annular step surface 15. Other configurations are the same as those of the embodiment shown in FIGS.

以上説明したように、この発明の実施の形態の排水蓋取付構造は、蓋嵌合穴部3及び該蓋嵌合穴部3より小径のシール穴部4が下方に向けて連設され且つ前記蓋嵌合穴部3とシール穴部4との間に環状支持段部5が形成された筒状受枠1と、板状の蓋本体10及び該蓋本体10の下面に設けられ且つ外周面に周方向に延びる環状溝12が設けられた挿入筒11を有する排水蓋2と、前記環状溝12に保持されたシールリング13とを備えている。また、前記蓋本体10は前記蓋嵌合穴部3に嵌合されていると共に前記環状支持段部5上に支持され、前記挿入筒11は前記シール穴部4に挿入され、前記シールリング13は前記シール穴部4の内周面に気密に弾接されている。しかも、前記シール穴部4のシール面4aは前記筒状受枠1の上部開口端から浸入する砂を下方に落下可能な角度に形成されている。   As described above, the drainage lid mounting structure according to the embodiment of the present invention has the lid fitting hole 3 and the seal hole 4 having a smaller diameter than the lid fitting hole 3 arranged continuously downward. A cylindrical receiving frame 1 in which an annular support step 5 is formed between the lid fitting hole 3 and the seal hole 4, a plate-like lid body 10, a lower surface of the lid body 10, and an outer peripheral surface. A drainage lid 2 having an insertion cylinder 11 provided with an annular groove 12 extending in the circumferential direction and a seal ring 13 held in the annular groove 12 are provided. The lid body 10 is fitted in the lid fitting hole 3 and supported on the annular support step 5, the insertion cylinder 11 is inserted into the seal hole 4, and the seal ring 13 Is elastically contacted with the inner peripheral surface of the seal hole 4. In addition, the seal surface 4a of the seal hole 4 is formed at an angle that allows sand entering from the upper opening end of the cylindrical receiving frame 1 to fall downward.

この構成によれば、筒状受枠1から排水蓋2を取り外す際に筒状受枠1内に砂が入った後、排水蓋2を筒状受枠1に取り付けても、砂によるシール性の低下を防止できる。   According to this configuration, even when the drain lid 2 is attached to the cylindrical receiving frame 1 after the sand has entered the cylindrical receiving frame 1 when the drain lid 2 is removed from the cylindrical receiving frame 1, the sealing performance is reduced due to the sand. Can be prevented.

また、この発明の実施の形態の排水蓋取付構造において、前記シール面4aは下方に向かうに従って徐々に縮径するテーパ面としている。   In the drain lid mounting structure according to the embodiment of the present invention, the seal surface 4a is a tapered surface that gradually decreases in diameter as it goes downward.

この構成によれば、筒状受枠1から排水蓋2を取り外す際に筒状受枠1内に砂が入っても、砂がシール面4aに沿って落下してシール面4aに堆積しないので、排水蓋2を取り外し後に筒状受枠1に取り付けても、砂によるシール性の低下を防止できる。   According to this configuration, even when sand enters the cylindrical receiving frame 1 when removing the drain lid 2 from the cylindrical receiving frame 1, the sand does not fall along the sealing surface 4a and accumulate on the sealing surface 4a. Even if the lid 2 is removed and attached to the cylindrical receiving frame 1, it is possible to prevent deterioration of the sealing performance due to sand.

更に、この発明の実施の形態の排水蓋取付構造において、前記シール面4aの下端部に小径の蓋係止穴部6aが連設され、前記挿入筒11の下端部が前記蓋係止穴部6a内に挿入されている。また、前記挿入筒11の下端部の外周面に第1係止部(環状係止溝14)が形成され、前記蓋係止穴部6aの内面に前記第1係止部(環状係止溝14)に係止する第2係止部(係止突起9)が形成されている。しかも、前記蓋係止穴部6aと前記シール穴4との間に環状段差面15が形成されていると共に、前記シールリング13と前記環状段差面15との間に所定間隔の隙間16が形成されている。   Further, in the drain lid mounting structure of the embodiment of the present invention, a small-diameter lid locking hole 6a is continuously provided at the lower end of the seal surface 4a, and the lower end of the insertion cylinder 11 is the lid locking hole. 6a is inserted. A first locking portion (annular locking groove 14) is formed on the outer peripheral surface of the lower end portion of the insertion tube 11, and the first locking portion (annular locking groove) is formed on the inner surface of the lid locking hole 6a. 14) is formed with a second locking portion (locking projection 9). Moreover, an annular step surface 15 is formed between the lid locking hole portion 6a and the seal hole 4, and a gap 16 having a predetermined interval is formed between the seal ring 13 and the annular step surface 15. Has been.

この構成によれば、筒状受枠1から排水蓋2を取り外す際に、筒状受枠1内に砂が入って環状段差面15に砂が堆積しても、この環状段差面15をシール面としていないので、排水蓋2を取り外し後に筒状受枠1に取り付けても、砂によるシール性の低下を防止できる。   According to this configuration, when the drain lid 2 is removed from the cylindrical receiving frame 1, even if sand enters the cylindrical receiving frame 1 and sand accumulates on the annular step surface 15, the annular step surface 15 is used as a sealing surface. Therefore, even if the drain lid 2 is removed and attached to the cylindrical receiving frame 1, it is possible to prevent deterioration of the sealing performance due to sand.

尚、以上説明した実施例では、この発明の排水蓋取付構造を排水桝に適用した例を示したが、必ずしもこれに限定されるものではない。例えば、この発明の排水蓋取付構造はマンホール等に適用することもできる。   In the embodiment described above, an example in which the drain lid mounting structure of the present invention is applied to a drainage basin has been shown, but the present invention is not necessarily limited thereto. For example, the drain lid mounting structure of the present invention can be applied to a manhole or the like.

この発明に係る排水蓋取付構造の一例を示す断面図である。It is sectional drawing which shows an example of the drain-lid attachment structure which concerns on this invention. 図1の要部拡大図である。It is a principal part enlarged view of FIG. 図1の排水蓋取付構造の分解図である。FIG. 2 is an exploded view of the drain lid mounting structure of FIG. 1. 図1〜3の排水蓋に設けられる環状溝の説明図である。It is explanatory drawing of the annular groove provided in the drain cover of FIGS. この発明に係る排水蓋取付構造の他の例を示す断面図である。It is sectional drawing which shows the other example of the drain-lid attachment structure which concerns on this invention. 図5の要部拡大図である。It is a principal part enlarged view of FIG. 図5の排水蓋取付構造の分解図である。FIG. 6 is an exploded view of the drain lid mounting structure of FIG. 5.

符号の説明Explanation of symbols

1・・・筒状受枠
2・・・排水蓋
3・・・蓋嵌合穴部
4・・・シール穴部
4a・・・シール面
5・・・環状支持段部
6a・・・蓋係止穴部
9・・・係止突起(第2係止部)
10・・・蓋本体
11・・・挿入筒
12・・・環状溝
13・・・シールリング
14・・・環状係止溝(第1係止部)
15・・・環状段差面
16・・・隙間
DESCRIPTION OF SYMBOLS 1 ... Cylindrical receiving frame 2 ... Drainage lid 3 ... Lid fitting hole part 4 ... Seal hole part 4a ... Seal surface 5 ... Annular support step part 6a ... Lid locking Hole 9 ... locking projection (second locking portion)
DESCRIPTION OF SYMBOLS 10 ... Lid main body 11 ... Insertion cylinder 12 ... Annular groove 13 ... Seal ring 14 ... Annular locking groove (1st locking part)
15 ... annular step surface 16 ... gap

Claims (3)

蓋嵌合穴部及び該蓋嵌合穴部より小径のシール穴部が下方に向けて連設され且つ前記蓋嵌合穴部とシール穴部との間に環状支持段部が形成された筒状受枠と、板状の蓋本体及び該蓋本体の下面に設けられ且つ外周面に周方向に延びる環状溝が設けられた挿入筒を有する排水蓋と、前記環状溝に保持されたシールリングとを備え、
前記蓋本体は前記蓋嵌合穴部に嵌合されていると共に前記環状支持段部上に支持され、前記挿入筒は前記シール穴部に挿入され、前記シールリングは前記シール穴部の内周面に気密に弾接された排水蓋取付構造であって、
前記シール穴部のシール面は前記筒状受枠の上部開口端から浸入する砂を下方に落下可能な角度に形成されていることを特徴とする排水蓋取付構造。
A cylinder in which a lid fitting hole and a seal hole having a smaller diameter than the lid fitting hole are continuously provided downward, and an annular support step is formed between the lid fitting hole and the seal hole. A drainage lid having a plate-shaped receiving frame, a plate-like lid main body, an insertion cylinder provided on the lower surface of the lid main body and provided with an annular groove extending in the circumferential direction on the outer circumferential surface, and a seal ring held in the annular groove With
The lid body is fitted in the lid fitting hole and supported on the annular support step, the insertion tube is inserted into the seal hole, and the seal ring is an inner periphery of the seal hole. A drainage lid mounting structure that is airtightly contacted with the surface,
A drainage lid mounting structure, wherein the sealing surface of the sealing hole portion is formed at an angle that allows sand entering from the upper opening end of the cylindrical receiving frame to fall downward.
請求項1に記載の排水蓋取付構造において、前記シール面は下方に向かうに従って徐々に縮径するテーパ面であることを特徴とする排水蓋取付構造。   2. The drain lid mounting structure according to claim 1, wherein the seal surface is a tapered surface that gradually decreases in diameter as it goes downward. 請求項1に記載の排水蓋取付構造において、前記シール面の下端部に小径の蓋係止穴部が連設され、前記挿入筒の下端部が前記蓋係止穴部内に挿入され、前記挿入筒の下端部の外周面に第1係止部が形成され、前記蓋係止穴部の内面に前記第1係止部に係止する第2係止部が形成され、前記蓋係止穴部と前記シール穴との間に環状段差面が形成されていると共に、前記シールリングと前記環状段差面との間に所定間隔の隙間が形成されていることを特徴とする排水蓋取付構造。   2. The drain lid mounting structure according to claim 1, wherein a small-diameter lid locking hole is continuously provided at a lower end of the sealing surface, and a lower end of the insertion cylinder is inserted into the lid locking hole, and the insertion A first locking portion is formed on the outer peripheral surface of the lower end portion of the cylinder, and a second locking portion for locking to the first locking portion is formed on the inner surface of the lid locking hole portion, and the lid locking hole A drainage lid mounting structure in which an annular step surface is formed between a portion and the seal hole, and a gap is formed between the seal ring and the annular step surface.
JP2007076234A 2007-03-23 2007-03-23 Drain cover mounting structure Withdrawn JP2008231860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007076234A JP2008231860A (en) 2007-03-23 2007-03-23 Drain cover mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007076234A JP2008231860A (en) 2007-03-23 2007-03-23 Drain cover mounting structure

Publications (1)

Publication Number Publication Date
JP2008231860A true JP2008231860A (en) 2008-10-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007076234A Withdrawn JP2008231860A (en) 2007-03-23 2007-03-23 Drain cover mounting structure

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017161859A1 (en) * 2016-03-22 2017-09-28 佛山市美的清湖净水设备有限公司 Water path component for water purifier and water purifier having water path component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017161859A1 (en) * 2016-03-22 2017-09-28 佛山市美的清湖净水设备有限公司 Water path component for water purifier and water purifier having water path component

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