JP2005350985A - Negative pressure destructor for water-service installation - Google Patents

Negative pressure destructor for water-service installation Download PDF

Info

Publication number
JP2005350985A
JP2005350985A JP2004173761A JP2004173761A JP2005350985A JP 2005350985 A JP2005350985 A JP 2005350985A JP 2004173761 A JP2004173761 A JP 2004173761A JP 2004173761 A JP2004173761 A JP 2004173761A JP 2005350985 A JP2005350985 A JP 2005350985A
Authority
JP
Japan
Prior art keywords
water
water supply
valve
negative pressure
opening space
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.)
Granted
Application number
JP2004173761A
Other languages
Japanese (ja)
Other versions
JP4390635B2 (en
Inventor
Hiroki Yamaguchi
弘樹 山口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2004173761A priority Critical patent/JP4390635B2/en
Publication of JP2005350985A publication Critical patent/JP2005350985A/en
Application granted granted Critical
Publication of JP4390635B2 publication Critical patent/JP4390635B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Float Valves (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a negative pressure destructor for a water-service installation, which positively blocks an opening space by smooth elevation of a valve main body during feeding of water, and positively prevents water vapor in a feed water tank from leaking from the opening space to the outside during termination of feeding of water. <P>SOLUTION: The negative pressure destructor N is arranged in a warm water tank 11 for storing therein water force-fed from a feed water source, and formed of a valve container 13, a cover member 23, and the valve main body 31. The valve container has a side wall portion 14 which is formed in an upper wall of the warm water tank and opened at an upper edge vertically recessed inward, and a bottom wall portion 15 which seals a lower edge of the side wall portion. The cover member is mounted in an upper inner surface of the side wall portion, and has the opening space 23a smaller in diameter than an opening of the side wall portion. The valve main body is housed on a lower side of the cover member in the valve container, and floats on water. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、給水源から供給された水を給水タンクに貯留し、給水タンクに貯留した水や温水を給水源からの給水によりパイプを通して貯水容器に供給する給水装置の給水タンクに設けられて、貯水容器からパイプを通しての水の逆流を防止するための給水装置の負圧破壊装置に関するものである。   The present invention is provided in a water supply tank of a water supply device that stores water supplied from a water supply source in a water supply tank, and supplies water or hot water stored in the water supply tank to a water storage container through a pipe by water supply from the water supply source. The present invention relates to a negative pressure breaking device of a water supply device for preventing a back flow of water from a water storage container through a pipe.

従来、この種の給水装置の負圧破壊装置としては、便器に取り付ける温水洗浄装置に設けられたものが知られている。この温水洗浄装置は、図１に示すように、給水源４から供給されて貯留した水をヒーター３３で加熱して温水として蓄える温水タンク１１と、蓄えた温水を人体の被洗浄部位(図示せず)に向けてノズル４２の先端４３より噴射する排水管４１を有し、給水源４の異常により温水タンク１１内が負圧となったとき、負圧を破壊する負圧破壊装置Ｎを温水タンク１１に備えている。   Conventionally, as a negative pressure breaking device of this kind of water supply device, what was provided in the warm water washing device attached to a toilet bowl is known. As shown in FIG. 1, this hot water cleaning apparatus includes a hot water tank 11 that heats and stores hot water supplied from a water supply source 4 by a heater 33 and stores the stored hot water as a portion to be cleaned (not shown). A negative pressure breaker N that breaks the negative pressure when the inside of the hot water tank 11 becomes negative due to an abnormality of the water supply source 4. The tank 11 is provided.

負圧破壊装置Ｎは、図６に示すように、温水タンク１１の上壁１２にカップ状に形成された弁容器１３内に弁本体５を収容しており、弁容器１３の開口には蓋部材２３が被されている。給水源４から温水タンク１１内への給水時には、自重により弁容器１３の底壁面にあった弁本体５が、給水源４から温水タンク１１に供給される水の圧力により、上方の蓋部材２３下端の弁座２８に押し付けられその開口空間部２３ａを閉鎖し、排水管４１に設けたノズル４２から人体の被洗浄部位に向けて水が噴射される。一方、給水源４の不具合等によって温水タンク１１内が負圧状態になると、図８に示すように、弁本体５は自重により弁容器１３の底面にあり、蓋部材２３下端と弁本体５に隙間ができており、隙間から温水タンク１１内に大気が入り込むことで、負圧が破壊される。これにより、便器に汚水が充満している場合でも、排水管４１から汚水が吸い込まれることはなく、給水源４が汚染されることもない。   As shown in FIG. 6, the negative pressure breaker N accommodates the valve body 5 in a valve container 13 formed in a cup shape on the upper wall 12 of the hot water tank 11. The member 23 is covered. When water is supplied from the water supply source 4 into the hot water tank 11, the valve body 5 that is on the bottom wall surface of the valve container 13 due to its own weight causes the upper lid member 23 to be moved by the pressure of water supplied from the water supply source 4 to the hot water tank 11. The opening space 23a is pressed against the valve seat 28 at the lower end, and water is jetted from the nozzle 42 provided in the drain pipe 41 toward the body to be cleaned. On the other hand, when the inside of the hot water tank 11 is in a negative pressure state due to a malfunction of the water supply source 4 or the like, the valve body 5 is on the bottom surface of the valve container 13 due to its own weight as shown in FIG. A gap is formed, and the negative pressure is destroyed when air enters the hot water tank 11 from the gap. Thereby, even when the toilet bowl is filled with sewage, the sewage is not sucked from the drain pipe 41 and the water supply source 4 is not polluted.

ところで、上記負圧破壊装置Ｎの負圧破壊性能である汚水の吸上高さの基準が、今後更に高い基準に改正される可能性があり、負圧破壊性能を向上させるには、弁本体５の上下するストロークを大きくし、外気の吸入面積を大きくする手段がある。従来の弁本体５は、無給水時には、図７に示すように、自重により弁容器１３の底面に落ちており、給水時の水圧により弁本体５が上に押し付けられる際、ストロークを大きくするほど傾く空間が大きくなる。そのため、弁本体５と蓋部材２３下端との接触が不十分となり、開口空間部２３ａの閉鎖におけるシール不良の発生率が高くなる。   By the way, there is a possibility that the sewage suction height standard, which is the negative pressure breaking performance of the negative pressure breaking device N, may be revised to a higher standard in the future. There is means for increasing the up and down stroke of 5 and increasing the outside air intake area. As shown in FIG. 7, the conventional valve body 5 falls to the bottom surface of the valve container 13 due to its own weight as shown in FIG. 7, and when the valve body 5 is pressed upward by the water pressure during water supply, the stroke becomes larger. The tilting space becomes larger. Therefore, the contact between the valve main body 5 and the lower end of the lid member 23 becomes insufficient, and the occurrence rate of seal failure in closing the opening space 23a increases.

また、温水を保温状態の時、ノズルから温水を噴射する以外は給水源４から温水タンク１１内には圧力が加えられないため、弁本体３１は弁容器１３の底壁部に降りたままになっており、蓋部材２３の開口空間部２３ａが開放状態になっている。そのため、温水タンク１１内で４０℃位に保温されている蒸気が開口空間部２３ａから外部に漏れ出ることになり、温水洗浄装置周辺の電子回路等を錆びさせる原因となっている。   Further, when warm water is kept warm, since no pressure is applied from the water supply source 4 to the warm water tank 11 except for spraying warm water from the nozzle, the valve main body 31 remains on the bottom wall of the valve vessel 13. The opening space 23a of the lid member 23 is in an open state. For this reason, the steam kept at about 40 ° C. in the hot water tank 11 leaks out from the opening space 23a, causing the electronic circuits and the like around the hot water cleaning device to rust.

本発明は、上記問題を解決しようとするものであり、給水時において弁本体がスムーズに上昇して確実に開口空間部が閉鎖状態にされると共に、給水停止状態において給水タンク内の水蒸気の開口空間部からの漏れだしを確実に防止することができる給水装置の負圧破壊装置を提供することを目的とする。   The present invention is intended to solve the above-described problem, and when the water is supplied, the valve body rises smoothly and the opening space is reliably closed, and the water vapor opening in the water supply tank is stopped when the water supply is stopped. An object of the present invention is to provide a negative pressure breaking device for a water supply device that can reliably prevent leakage from a space.

上記目的を達成するために、本発明の構成上の特徴は、給水源から供給された水を給水タンクに貯留し、給水タンクに貯留した水を給水源からの給水により排水管を通して貯水容器に供給する給水装置の前記給水タンクに設けられた負圧破壊装置であって、給水タンクの上壁にて内部に向けて鉛直方向に凹んで配設されて上端にて開口する筒状部と、筒状部の下端を封止する底壁部とからなり、筒状部に上下に延びた内外を連通させる貫通孔を有する弁容器と、筒状部の上端側内面に一体又は別体で設けられて、その中心に軸方向に貫通した筒状部の開口より径の小さい開口空間部を有する蓋部と、弁容器内に収容されて上下に移動可能にされると共に、前記蓋部下端に当接することにより開口空間部を閉鎖する弁本体とを備え、給水タンク内が満水状態のときに開口空間部を閉鎖し、給水タンク内が負圧状態にされたときに開口空間部を開放する負圧破壊装置において、弁本体が水に浮くようにされたことにある。   In order to achieve the above object, the constitutional feature of the present invention is that water supplied from a water supply source is stored in a water supply tank, and water stored in the water supply tank is supplied to the water storage container through a drain pipe by water supply from the water supply source. A negative pressure breaking device provided in the water supply tank of the water supply device to be supplied, which is disposed in the upper wall of the water supply tank so as to be recessed in the vertical direction and opened at the upper end; A bottom wall part that seals the lower end of the tubular part, and has a through-hole that communicates the inside and outside of the tubular part that extends vertically, and is provided integrally or separately on the inner surface of the upper end side of the tubular part A lid portion having an opening space portion whose diameter is smaller than the opening of the cylindrical portion that penetrates in the axial direction at the center thereof, and is accommodated in the valve container so as to be movable up and down, and at the lower end of the lid portion. A water supply tank having a valve main body that closes the opening space by contacting In the negative pressure breaking device that closes the opening space when the water is full and opens the opening space when the inside of the water supply tank is in a negative pressure state, the valve body is made to float on water. .

上記のように構成した本発明においては、弁本体が水に浮くようになっているので、給水タンク内に負圧状態が発生したときは、水位の低下に伴って弁本体が下降するので、開口空間部が開放されて外部から空気が流入することにより、給水タンク内の負圧状態が直ちに解消される。また、給水時には、水圧により弁本体が上に押し付けられるが、弁本体が水に浮いて水平状態になっているため、押し上げのストロークを大きくしても、弁本体が傾斜することなくスムーズに上昇することができる。そのため、弁本体が蓋部下面に確実に密着して開口空間部を閉鎖することができる。その結果、給水時における、負圧破壊装置の開口空間部のシール性が確保される。さらに、給水タンク内に水が満たされた無給水時でも、弁本体が浮き上がることにより、蓋部に当接してその開口空間部を確実に塞ぐことができる。特に、初期給水で給水タンクが満水になった以降は、水を抜かない限り弁本体が下がることがなく、給水の度に弁本体が上下しない分、開口空間部におけるシール不良の発生が抑えられる。その結果、給水タンク内の保温中の温水による水蒸気が開口空間部から外部へ漏れ出ることを確実に防止できる。   In the present invention configured as described above, since the valve body is designed to float on water, when a negative pressure state occurs in the water supply tank, the valve body descends as the water level decreases, When the opening space is opened and air flows in from the outside, the negative pressure state in the water supply tank is immediately eliminated. In addition, when supplying water, the valve body is pushed upward by water pressure, but the valve body floats in water and is in a horizontal state, so even if the stroke of pushing up is increased, the valve body rises smoothly without tilting. can do. For this reason, the valve main body can be securely adhered to the lower surface of the lid portion and the opening space portion can be closed. As a result, the sealing performance of the opening space portion of the negative pressure breaking device during water supply is ensured. Furthermore, even when there is no water supply in which the water supply tank is filled with water, the valve body can be lifted to contact the lid portion and reliably close the opening space. In particular, after the water supply tank is full with initial water supply, the valve body will not drop unless water is drained, and the occurrence of a seal failure in the open space is suppressed as the valve body does not move up and down each time water is supplied. . As a result, it is possible to reliably prevent water vapor from the warm water being kept warm in the water supply tank from leaking out of the opening space.

本発明において、弁本体を、水より軽い比重の材料で形成することができる。これにより、弁本体を水に浮かせることができる。
また、弁本体を、水より重い比重の材料で形成すると共に、内部に空洞を設けることにより、全体として水より小さい比重にすることができる。これにより、弁本体を水に浮かせることができる。 In the present invention, the valve body can be made of a material having a specific gravity lighter than water. Thereby, a valve main body can be floated on water.
Further, the valve body is made of a material having a specific gravity heavier than that of water, and by providing a cavity inside, the specific gravity can be made smaller than that of water as a whole. Thereby, a valve main body can be floated on water.

また、本発明において、互いに対向して当接可能にされている弁本体の下面と弁容器の底壁部上面の少なくとも一方に、突起を設けることができる。これにより、弁本体が下降して底壁部上に置かれたとき、突起によって弁本体の下面と弁容器の底壁部上面とが線接触あるいは点接触状態となり、両者間に隙間が介在した状態となる。そのため、給水開始により、弁本体が底壁部からスムーズに離れて浮き上がることができ、開口空間部を確実に閉鎖できる。その結果、開口空間部から水蒸気が外部へ漏れ出る不具合を確実に防止できる。   In the present invention, a protrusion can be provided on at least one of the lower surface of the valve main body and the upper surface of the bottom wall portion of the valve container that can be opposed to each other. As a result, when the valve body is lowered and placed on the bottom wall part, the lower surface of the valve body and the upper surface of the bottom wall part of the valve container are brought into line contact or point contact by the projection, and a gap is interposed between the two. It becomes a state. Therefore, when the water supply is started, the valve main body can be lifted off smoothly from the bottom wall portion, and the open space portion can be reliably closed. As a result, it is possible to reliably prevent a problem that water vapor leaks out from the opening space.

また、本発明において、蓋部の開口空間部の少なくとも下端側に、開口空間部内を複数の領域に仕切る仕切板部を設けることができる。これにより、弁本体が、弾性体板のように変形し易いものであっても、水圧に押されて変形しようとしても仕切板部で止められるため、空間開口部に引き込まれるおそれはない。その結果、弁本体による開口空間部を密閉状態で閉鎖する機能が確実に達成される。   Moreover, in this invention, the partition plate part which partitions off the inside of an opening space part into a some area | region can be provided in the at least lower end side of the opening space part of a cover part. Thereby, even if the valve body is easily deformed like an elastic plate, it is stopped by the partition plate portion even if it is pushed by the water pressure to be deformed, so there is no possibility of being drawn into the space opening. As a result, the function of closing the opening space by the valve body in a sealed state is reliably achieved.

本発明によれば、弁本体が水に浮くようになっているので、給水タンク内に負圧状態が発生したときの負圧破壊機能が果たされると共に、給水時、無給水時において、弁本体による開口空間部閉鎖機能が確実に達成され、開口空間部におけるシール不良の発生が抑えられる。その結果、本発明においては、給水タンク内の保温中の温水による水蒸気が開口空間部から外部へ漏れ出ることを確実に防止でき、周辺の電子回路等に損傷を与える不具合が確実に防止される。また、本発明において、互いに対向して当接可能にされている弁本体の下面と弁容器の底壁部上面の少なくとも一方に突起を設けることにより、給水開始により、弁本体が底壁部からスムーズに離れて浮き上がることができ、開口空間部の開放による水蒸気の外部への漏れ出しを防止できる。さらに、本発明において、蓋部の開口空間部内を複数の領域に仕切る仕切板部を設けることにより、変形し易い弁本体でも仕切板部で止められるため、弁本体による開口空間部を密閉状態で閉鎖する機能が確実に達成される。   According to the present invention, since the valve main body floats on water, the negative pressure destruction function when a negative pressure state occurs in the water supply tank is fulfilled, and the valve main body is at the time of water supply and no water supply. The opening space portion closing function is reliably achieved, and the occurrence of poor sealing in the opening space portion is suppressed. As a result, in the present invention, it is possible to reliably prevent the water vapor from the warm water in the water supply tank from leaking from the open space to the outside, and to reliably prevent problems that damage the surrounding electronic circuits and the like. . Further, in the present invention, by providing a protrusion on at least one of the lower surface of the valve main body and the upper surface of the bottom wall portion of the valve container that can be opposed to each other, the valve main body is separated from the bottom wall portion by the start of water supply. It is possible to lift away smoothly and prevent leakage of water vapor to the outside due to opening of the opening space. Furthermore, in the present invention, by providing a partition plate portion that partitions the open space portion of the lid portion into a plurality of regions, even a valve body that is easily deformed can be stopped by the partition plate portion, so that the open space portion by the valve body is sealed. The function of closing is reliably achieved.

以下、本発明の実施の形態について図に基づいて説明する。図１は、実施例に係る給水装置である温水洗浄装置を備えた水洗式便器の概略構成を模式図により示し、図２は、給水装置の給水時を断面図により示し、図３は給水装置の無給水時を断面図により示したものである。また、図４は温水タンク上壁の弁容器取り付け部分を下側から見た斜視図により示し、図５は蓋部材を斜視図により示したものである。水洗式便器１は、貯水容器２ａを備えた便器本体２と、便器本体２の前側に載置されて貯水容器２ａ内に給水する温水洗浄装置１０を備えている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a schematic configuration of a flush toilet equipped with a hot water washing apparatus which is a water supply apparatus according to an embodiment, FIG. 2 is a sectional view showing water supply of the water supply apparatus, and FIG. 3 is a water supply apparatus. This is a cross-sectional view when no water is supplied. FIG. 4 is a perspective view of the valve container mounting portion on the upper wall of the hot water tank as viewed from below, and FIG. 5 is a perspective view of the lid member. The flush toilet 1 includes a toilet body 2 provided with a water storage container 2a, and a hot water cleaning device 10 mounted on the front side of the toilet body 2 and supplying water into the water storage container 2a.

温水洗浄装置１０は、負圧破壊装置Ｎを備えた給水タンクである温水タンク１１を有している。温水タンク１１は、その内壁部下端側に給水源４から供給された水を加熱するヒータ３３を設けており、また側壁の下端側には水抜き栓１１ｂで閉鎖された水抜き穴１１ａを設けている。温水タンク１１は、給水管３５によって給水源４に接続されており、また、貯えた温水を人体の被洗浄部位(図示せず)に向けて先端４３より噴射する為のノズル４２が介装された排水管４１を接続している。給水管３５の中間位置には、水の供給を操作する為の電磁弁である給水弁３６が取り付けられており、給水管３５の上下流側の連通及び遮断状態の切り替えを行うようになっている。   The hot water cleaning device 10 includes a hot water tank 11 that is a water supply tank provided with a negative pressure breaking device N. The hot water tank 11 is provided with a heater 33 for heating water supplied from the water supply source 4 at the lower end side of the inner wall portion, and a drain hole 11a closed with a drain plug 11b is provided at the lower end side of the side wall. ing. The hot water tank 11 is connected to a water supply source 4 by a water supply pipe 35, and a nozzle 42 for injecting the stored hot water from a tip 43 toward a portion to be cleaned (not shown) of a human body is interposed. A drain pipe 41 is connected. A water supply valve 36, which is an electromagnetic valve for operating the water supply, is attached at an intermediate position of the water supply pipe 35, and the communication between the upstream and downstream sides of the water supply pipe 35 and the switching of the shut-off state are performed. Yes.

また、給水管３５は、給水弁１の下流側で分岐した分岐管３７を有している。分岐管３７は、貯水容器２ａまで延びており、その中間位置に圧逃し弁３８が取り付けられており、温水タンク１１内の圧力が一定値を超えた場合には温水タンク１１への供給前の水を便器１に排出して温水タンク１１内の圧力を一定値以下に抑えるようになっている。排水管４１のノズル４２からの温水の噴射の勢いは温水タンク１１の内圧によるので、圧逃し弁３８によって、ノズル４２から噴射される温水の勢いが強くなり過ぎないように調節することができる。   Further, the water supply pipe 35 has a branch pipe 37 branched on the downstream side of the water supply valve 1. The branch pipe 37 extends to the water storage container 2a, and a pressure relief valve 38 is attached at an intermediate position thereof. When the pressure in the hot water tank 11 exceeds a certain value, the branch pipe 37 is supplied before being supplied to the hot water tank 11. Water is discharged into the toilet 1 so that the pressure in the hot water tank 11 is kept below a certain value. Since the momentum of the hot water injection from the nozzle 42 of the drain pipe 41 depends on the internal pressure of the hot water tank 11, the pressure relief valve 38 can be adjusted so that the momentum of the hot water jetted from the nozzle 42 does not become too strong.

温水タンク１１は、樹脂製の中空箱型の容器であって、上壁１２の中央部で上壁１２に対して垂直下方にへこんだ円筒状の弁容器１３を設けている。弁容器１３は、筒状部である円筒形の側壁部１４と、側壁部１４の下端を塞ぐ底壁部１５を一体で有し上端が開口１６となっている。側壁部１４は、図４に詳細に示すように、円筒形の上側部分１４ａと、上側部分の下端にて周方向の複数箇所から軸方向に延びた棒状の小片からなり小片部間が周方向に広がった空間部である貫通孔１７になっている下側部分１４ｂとにより構成されている。底壁部１５は、中央側の円板部１５ａとその周囲から放射状に延びて側壁部１４の小片部につながる放射状部１５ｂとからなる。放射状部１５ｂの間は、貫通孔１７につながる貫通孔１８ａとなっており、また、底壁部１５の中央に貫通孔１８ｂが設けられており、底壁部１５の円板部１５ａ上面には、環状の突起１９が貫通孔１８ｂを囲んて突出している。また、上壁１２には、弁容器１３を囲んだ周方向の複数箇所に、下方にわずかに延びた円筒形で底部が封止された小径の取付筒部２１が設けられている。   The hot water tank 11 is a resin-made hollow box-type container, and is provided with a cylindrical valve container 13 that is recessed vertically downward with respect to the upper wall 12 at the center of the upper wall 12. The valve container 13 has a cylindrical side wall part 14 that is a cylindrical part and a bottom wall part 15 that closes the lower end of the side wall part 14, and has an opening 16 at the upper end. As shown in detail in FIG. 4, the side wall portion 14 is composed of a cylindrical upper portion 14 a and rod-like small pieces extending in the axial direction from a plurality of locations in the circumferential direction at the lower end of the upper portion. And a lower portion 14b which is a through-hole 17 which is a space portion which is widened. The bottom wall portion 15 includes a central disk portion 15 a and a radial portion 15 b that extends radially from the periphery thereof and is connected to a small piece portion of the side wall portion 14. Between the radial portions 15b is a through-hole 18a connected to the through-hole 17, and a through-hole 18b is provided in the center of the bottom wall portion 15. On the upper surface of the disc portion 15a of the bottom wall portion 15, An annular protrusion 19 projects around the through hole 18b. In addition, the upper wall 12 is provided with a small-diameter mounting cylinder portion 21 having a cylindrical shape slightly extending downward and sealed at the bottom, at a plurality of circumferential locations surrounding the valve container 13.

さらに、上壁部１２には蓋部である蓋部材２３が被せられている。蓋部材２３は、略長円形で中央に開口１６より小さい径の中心孔を有する蓋板２４と、蓋板２４の下面にて中心孔の周囲から下方に突出した円筒形で開口１６に嵌め合わされる嵌合筒２５と、蓋板２４の上面にて中心孔の周囲から上方にわずかに突出し垂直部２６ａとその上端で直角に折り曲げられて開口１６上に延びた水平部２６ｂとからなる遮蔽板部２６とを一体で設けている。蓋板２４の中心孔と嵌合筒２５の中心孔とが蓋部材２３の開口空間部２３ａになっている。嵌合筒２５は、外径が開口１６の内径よりわずかに小さく、軸方向長さが上壁１２から上記貫通孔１７の上端位置までの長さと略等しくなっており、その外周面にＯリング２７を巻付ける取付溝２７ａを設けている。また、嵌合筒２５の内周面には、軸方向に延びた２枚の板材が直交した十字状の仕切板部２５ａが取り付けられており、開口空間部２３ａ内を十字状に仕切っている。なお、仕切板部２５ａについては、例えば弁本体３１の強度が十分高いような場合には省略することも可能である。   Further, the upper wall portion 12 is covered with a lid member 23 which is a lid portion. The lid member 23 is fitted into the opening 16 in a substantially oval shape and having a center plate having a central hole smaller than the opening 16 in the center and a cylindrical shape projecting downward from the periphery of the center hole on the lower surface of the lid plate 24. A shielding plate comprising: a fitting cylinder 25; a vertical portion 26a slightly protruding upward from the periphery of the center hole on the upper surface of the lid plate 24; and a horizontal portion 26b bent at a right angle at the upper end thereof and extending on the opening 16. The part 26 is provided integrally. The center hole of the lid plate 24 and the center hole of the fitting cylinder 25 form an opening space 23 a of the lid member 23. The fitting cylinder 25 has an outer diameter slightly smaller than the inner diameter of the opening 16, and its axial length is substantially equal to the length from the upper wall 12 to the upper end position of the through hole 17. 27 is provided with a mounting groove 27a. Further, a cross-shaped partition plate portion 25a in which two plate members extending in the axial direction are orthogonal to each other is attached to the inner peripheral surface of the fitting cylinder 25, and the inside of the opening space portion 23a is partitioned into a cross shape. . In addition, about the partition plate part 25a, when the intensity | strength of the valve main body 31 is high enough, it is also possible to abbreviate | omit.

嵌合筒２５の下端は、下方にわずかに突出した環状の弁座部２８になっている。また、蓋板２４の外周側の上記取付筒部２１との対応位置には、取付孔２４ａが設けられている。蓋部材２３は、嵌合筒２５を弁容器１３に挿嵌し、蓋板２４を上壁１２に重ね合せて、取付孔２４ａにタッピンネジ２９を挿入し取付筒部２１の凹部に食い込ませることにより上壁１２に固定される。さらに、取付溝２７ａに巻装されたＯリング２７により、嵌合筒２５と弁容器１３との間のシール性が確保される。ただし、タッピンネジの代りに通常のボルトを用いることも可能である。   The lower end of the fitting cylinder 25 is an annular valve seat portion 28 slightly protruding downward. An attachment hole 24 a is provided at a position corresponding to the attachment cylinder portion 21 on the outer peripheral side of the lid plate 24. The lid member 23 is formed by inserting the fitting cylinder 25 into the valve container 13, overlaying the lid plate 24 on the upper wall 12, and inserting a tapping screw 29 into the mounting hole 24 a to bite into the recess of the mounting cylinder portion 21. It is fixed to the upper wall 12. Furthermore, the sealing performance between the fitting cylinder 25 and the valve container 13 is ensured by the O-ring 27 wound around the mounting groove 27a. However, it is also possible to use a normal bolt instead of the tapping screw.

弁容器１３内には、底壁部１５と蓋部材２３下端との間に弁本体３１が収容されている弁本体３１は、例えば比重０．６の合成ゴム等の弾性体により所定厚さの円板形に形成されており、その外径が開口１６よりわずかに小さくかつ開口空間部２３ａより大きくなっている。弁本体３１は、弁容器１３と蓋部材２３内で上下方向に自由に移動できるようになっている。弁本体３１が移動可能な上下方向距離は、負圧破壊時に弁本体３１が弁容器１３の底壁部１５に設けられた突起１９の上に落ちたとき、蓋部材２３下端との間に生じる空間から大気を吸引するのに必要な大きさに設定されている。負圧破壊装置Ｎは、上記弁容器１３、蓋部材２３及び弁本体３１により構成されている。また、温水タンク１１の側壁の下端側には上記給水管３５が連結されており、温水タンク１１の側壁の上端側には上記排水管４１が連結されている。   The valve main body 31 in which the valve main body 31 is accommodated in the valve container 13 between the bottom wall portion 15 and the lower end of the lid member 23 has a predetermined thickness by an elastic body such as synthetic rubber having a specific gravity of 0.6, for example. It is formed in a disc shape, and its outer diameter is slightly smaller than the opening 16 and larger than the opening space 23a. The valve body 31 can move freely in the vertical direction within the valve container 13 and the lid member 23. The vertical distance in which the valve main body 31 can move is generated between the lower end of the lid member 23 when the valve main body 31 falls on the protrusion 19 provided on the bottom wall portion 15 of the valve container 13 when the negative pressure is broken. It is set to a size necessary to suck air from the space. The negative pressure breaking device N is constituted by the valve container 13, the lid member 23 and the valve main body 31. The water supply pipe 35 is connected to the lower end side of the side wall of the hot water tank 11, and the drain pipe 41 is connected to the upper end side of the side wall of the hot water tank 11.

つぎに、上記実施例の動作について説明する。
給水時には、図２に示すように、給水源４からの給水の水圧により弁本体３１が蓋部材２３の下端の弁座部２８に押し付けられるが、弁本体３１が水に浮いて水平状態になっているため、押し上げのストロークを大きくしても、弁本体３１が傾斜することなくスムーズに上昇することができる。そのため、弁本体３１が弁座部２８に確実に密着して開口空間部２３ａを閉鎖することができる。その結果、給水時における、負圧破壊装置Ｎの開口空間部２３ａのシール性が確保される。さらに、温水タンク１１内に水が満たされた無給水時でも、給水時と同様に、弁本体３１が浮き上がることにより、弁座部２８に当接して開口空間部２３ａを確実に塞ぐことができる。 Next, the operation of the above embodiment will be described.
At the time of water supply, as shown in FIG. 2, the valve main body 31 is pressed against the valve seat portion 28 at the lower end of the lid member 23 by the water pressure of the water supply from the water supply source 4, but the valve main body 31 floats on the water and becomes horizontal. Therefore, even if the push-up stroke is increased, the valve main body 31 can rise smoothly without tilting. Therefore, the valve main body 31 can be securely attached to the valve seat portion 28 to close the opening space portion 23a. As a result, the sealing performance of the open space 23a of the negative pressure breaking device N during water supply is ensured. Further, even when there is no water supply in which the hot water tank 11 is filled with water, as in the case of water supply, the valve main body 31 is lifted, so that it can contact the valve seat portion 28 and reliably close the opening space portion 23a. .

特に、初期給水で温水タンク１１が満水になった以降は、水抜き栓１１ｂを抜かない限り弁本体３１が下がることがなく、給水の度に弁本体３１が上下しないため、開口空間部２３ａにおけるシール不良の発生が抑えられる。その結果、本実施例においては、温水タンク１１内の保温中の温水による水蒸気が開口空間部２３ａから外部へ漏れ出ることを確実に防止でき、周辺の電子回路等に損傷を与える不具合を確実に防止できる。また、弁本体３１が水に浮くようになっているので、温水タンク１１内に負圧状態が発生したときは、図３に示すように、水位の低下に伴って弁本体３１が下降するので、開口空間部２３ａが速やかに開放されて外部から空気が流入することにより、温水タンク１１内の負圧状態が直ちに解消される。そのため、排水管４１を通して貯水容器２ａ内の汚水の逆流を防止でき、汚水による給水源４の汚染を確実に防止できる。   In particular, after the hot water tank 11 is filled with the initial water supply, the valve body 31 does not drop unless the drain plug 11b is removed, and the valve body 31 does not move up and down each time water is supplied. Occurrence of seal failure is suppressed. As a result, in the present embodiment, it is possible to reliably prevent water vapor from the warm water in the warm water tank 11 from leaking outside from the opening space 23a, and to reliably cause problems such as damage to the surrounding electronic circuits. Can be prevented. Since the valve body 31 floats in the water, when a negative pressure state occurs in the hot water tank 11, the valve body 31 descends as the water level decreases as shown in FIG. When the opening space 23a is quickly opened and air flows in from the outside, the negative pressure state in the hot water tank 11 is immediately eliminated. Therefore, the backflow of the sewage in the water storage container 2a can be prevented through the drain pipe 41, and contamination of the water supply source 4 by the sewage can be reliably prevented.

また、弁容器１３の底壁部１５に突起１９を設けたことにより、弁本体３１が下降して底壁部１５上に置かれたとき、突起１９によって弁本体３１の下面が底壁部１５に線接触状態となり、両者間の接触面積が非常に小さくされる。そのため、給水開始により、弁本体３１が底壁部１５からスムーズに離れて浮き上がることができる。その結果、開口空間部２３ａが迅速に閉鎖されるため、水蒸気の外部への漏れだしを確実に防止できる。   Further, since the protrusion 19 is provided on the bottom wall portion 15 of the valve container 13, when the valve main body 31 is lowered and placed on the bottom wall portion 15, the lower surface of the valve main body 31 is lowered by the protrusion 19 to the bottom wall portion 15. Therefore, the contact area between the two becomes very small. Therefore, the valve main body 31 can be lifted away smoothly from the bottom wall portion 15 by the start of water supply. As a result, the opening space 23a is quickly closed, so that it is possible to reliably prevent leakage of water vapor to the outside.

なお、上記実施例において、弁本体は比重が水より小さい弾性体によって形成されているが、これに代えて、例えば剛性のある合成プラスチックや金属等の水に浮かない比重の材質で形成すると共に内部を空洞にすることで比重を水より小さくすることができる。また、この場合、弁本体３１又は蓋部材２３の閉止する面いずれかに合成ゴム等の弾性体を設けてシール性を確保することができる。また、上記実施例においては、弁容器の底壁部に突起を設けているが、これに代えて弁本体の下面あるいは底壁部と弁本体の両方に突起を設けることができる。また、突起の形状については、環状に限らず、複数の点状の突起とすることができる。なお、突起については必要に応じてこれを省くこともできる。さらに、上記実施例においては、蓋部材は、弁容器及び上壁とは別部材として形成されているが、これらが一体で形成されたものであってもよい。   In the above embodiment, the valve body is formed of an elastic body having a specific gravity smaller than that of water. Instead, the valve body is formed of a material of specific gravity that does not float on water, such as rigid synthetic plastic or metal. Specific gravity can be made smaller than water by making the inside hollow. In this case, an elastic body such as a synthetic rubber can be provided on either the valve main body 31 or the surface of the lid member 23 to be closed to ensure the sealing performance. Moreover, in the said Example, although the protrusion was provided in the bottom wall part of the valve container, it can replace with this and can provide a protrusion in both the lower surface of a valve main body, or a bottom wall part and a valve main body. Further, the shape of the protrusion is not limited to an annular shape, and may be a plurality of point-like protrusions. In addition, about a protrusion, this can also be omitted as needed. Furthermore, in the said Example, although the cover member is formed as a member separate from a valve container and an upper wall, these may be formed integrally.

なお、本実施例においては、給水装置として水洗式便器に備えられた温水洗浄装置について説明しているが、これに限らず貯水容器に水を供給する負圧装置を備えた種々の給水装置に対して本発明を適用することができる。その他、上記実施例及び変形例に示した給水装置の負圧破壊装置については、一例であり、本発明の主旨を逸脱しない範囲において種々変更して実施することが可能である。   In the present embodiment, the hot water cleaning device provided in the flush toilet as the water supply device is described, but the present invention is not limited to this, and various water supply devices including a negative pressure device that supplies water to the water storage container are described. The present invention can be applied to this. In addition, the negative pressure breaking device of the water supply device shown in the above-described embodiments and modifications is merely an example, and various modifications can be made without departing from the gist of the present invention.

本発明によれば、弁本体が水に浮くようになっているので、給水タンク内に負圧状態が発生したときの負圧破壊機能が果たされると共に、給水時、無給水時において、弁本体による開口空間部閉鎖機能が確実に達成され、開口空間部におけるシール不良の発生が抑えられる。その結果、本発明においては、給水タンク内の保温中の温水による水蒸気が開口空間部から外部へ漏れ出ることを確実に防止でき、周辺の電子回路等に損傷を与える不具合を確実に防止できるので、有用である。   According to the present invention, since the valve main body floats on water, the negative pressure destruction function when a negative pressure state occurs in the water supply tank is fulfilled, and the valve main body is at the time of water supply and no water supply. The opening space portion closing function is reliably achieved, and the occurrence of poor sealing in the opening space portion is suppressed. As a result, in the present invention, it is possible to reliably prevent water vapor from the warm water in the water supply tank from leaking to the outside from the open space, and it is possible to reliably prevent problems that damage the surrounding electronic circuits and the like. Is useful.

本発明の実施例である温水洗浄装置を備えた水洗式便器の概略構成を示す模式図である。It is a schematic diagram which shows schematic structure of the flush toilet provided with the warm water washing | cleaning apparatus which is an Example of this invention. 温水洗浄装置を構成する温水タンクにおける給水時及び無給水時の状態を概略的に示す断面図である。It is sectional drawing which shows roughly the state at the time of the water supply in the hot water tank which comprises a warm water washing | cleaning apparatus, and the time of non-water supply. 温水洗浄装置を構成する温水タンクにおける負圧発生時の状態を概略的に示す断面図である。It is sectional drawing which shows schematically the state at the time of the negative pressure generation | occurrence | production in the warm water tank which comprises a warm water washing | cleaning apparatus. 温水タンク上壁の弁容器取り付け部分を下側から見た斜視図である。It is the perspective view which looked at the valve container attachment part of a hot water tank upper wall from the lower side. 蓋部材を概略的に示す斜視図である。It is a perspective view which shows a cover member roughly. 従来例である温水洗浄装置を構成する温水タンクにおける給水時の状態を概略的に示す断面図である。It is sectional drawing which shows schematically the state at the time of water supply in the warm water tank which comprises the warm water washing | cleaning apparatus which is a prior art example. 従来例である温水洗浄装置を構成する温水タンクにおける無給水時の状態を概略的に示す断面図である。It is sectional drawing which shows schematically the state at the time of the no-water supply in the warm water tank which comprises the warm water washing | cleaning apparatus which is a prior art example. 従来例である温水洗浄装置を構成する温水タンクにおける負圧発生時の状態を概略的に示す断面図である。It is sectional drawing which shows schematically the state at the time of the negative pressure generation | occurrence | production in the warm water tank which comprises the warm water washing | cleaning apparatus which is a prior art example.

符号の説明Explanation of symbols

１…水洗式便器、２ａ…貯水容器、１０…温水洗浄装置、１１…温水タンク、１２…上壁、１３…弁容器、１４…側壁部、１５…底壁部、１９…突起、２３…蓋部材、２３ａ…開口空間部、２４…蓋板、２５…嵌合筒、２８…弁座部、３１…弁本体、３３…ヒータ、３５…給水管、３６…給水弁、４１…排水管。 DESCRIPTION OF SYMBOLS 1 ... Flush toilet, 2a ... Water storage container, 10 ... Warm water washing apparatus, 11 ... Warm water tank, 12 ... Upper wall, 13 ... Valve container, 14 ... Side wall part, 15 ... Bottom wall part, 19 ... Protrusion, 23 ... Cover Member: 23a ... Opening space part, 24 ... Cover plate, 25 ... Fitting cylinder, 28 ... Valve seat part, 31 ... Valve body, 33 ... Heater, 35 ... Water supply pipe, 36 ... Water supply valve, 41 ... Drain pipe.

Claims (5)

給水源から供給された水を給水タンクに貯留し、該給水タンクに貯留した水を給水源からの給水により排水管を通して貯水容器に供給する給水装置の前記給水タンクに設けられた負圧破壊装置であって、
前記給水タンクの上壁にて内部に向けて鉛直方向に凹んで配設されて上端にて開口する筒状部と、該筒状部の下端を封止する底壁部とからなり、該筒状部に上下に延びた内外を連通させる貫通孔を有する弁容器と、
前記筒状部の上端側内面に一体又は別体で設けられて、その中心に軸方向に貫通した該筒状部の開口より径の小さい開口空間部を有する蓋部と、
前記弁容器内に収容されて上下に移動可能にされると共に、前記蓋部下端に当接することにより前記開口空間部を閉鎖する弁本体とを備え、前記給水タンク内が満水状態のときに前記開口空間部を閉鎖し、該給水タンク内が負圧状態にされたときに該開口空間部を開放する負圧破壊装置において、
前記弁本体が水に浮くようにされたことを特徴とする給水装置の負圧破壊装置。 A negative pressure breaking device provided in the water supply tank of a water supply device for storing water supplied from a water supply source in a water supply tank and supplying the water stored in the water supply tank to a water storage container through a drain pipe by water supply from the water supply source Because
The tubular tank comprises a cylindrical portion that is recessed in the vertical direction toward the inside at the upper wall of the water supply tank and opens at the upper end, and a bottom wall portion that seals the lower end of the tubular portion. A valve container having a through-hole communicating with the inside and the outside extending vertically in the shape part;
A lid portion provided integrally or separately on the inner surface on the upper end side of the cylindrical portion, and having an opening space portion having a smaller diameter than the opening of the cylindrical portion penetrating in the axial direction at the center thereof;
A valve main body that is accommodated in the valve container and is movable up and down, and closes the opening space by contacting the lower end of the lid, and when the water supply tank is full In the negative pressure breaking device that closes the opening space and opens the opening space when the inside of the water supply tank is in a negative pressure state,
A negative pressure breaking device for a water supply device, wherein the valve main body floats on water. 前記弁本体が、水より軽い比重の材料で形成されていることを特徴とする前記請求項１に記載の給水装置の負圧破壊装置。 The negative pressure breaking device for a water supply device according to claim 1, wherein the valve body is made of a material having a specific gravity lighter than water. 前記弁本体が、水より重い比重の材料で形成されると共に、内部に空洞を設けることにより、全体として水より小さい比重にされていることを特徴とする前記請求項１に記載の給水装置の負圧破壊装置。 2. The water supply device according to claim 1, wherein the valve body is made of a material having a specific gravity heavier than water, and has a specific gravity smaller than that of water as a whole by providing a cavity therein. Negative pressure breaker. 互いに対向して当接可能にされている前記弁本体の下面と前記弁容器の底壁部上面の少なくとも一方に、突起を設けたことを特徴とする前記請求項１から３のいずれか１項に記載の給水装置の負圧破壊装置。 4. The projection according to claim 1, wherein a protrusion is provided on at least one of a lower surface of the valve main body and an upper surface of a bottom wall portion of the valve container which are capable of contacting each other. 5. The negative pressure breaking device of the water supply apparatus described in 1. 前記蓋部の開口空間部の少なくとも下端側に、該開口空間部内を複数の領域に仕切る仕切板部を設けたことを特徴とする前記請求項１から４のいずれか１項に記載の給水装置の負圧破壊装置。

The water supply apparatus according to any one of claims 1 to 4, wherein a partition plate portion that partitions the opening space portion into a plurality of regions is provided at least on a lower end side of the opening space portion of the lid portion. Negative pressure breaking device.

JP2004173761A 2004-06-11 2004-06-11 Negative pressure breaker for water supply equipment Expired - Fee Related JP4390635B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004173761A JP4390635B2 (en) 2004-06-11 2004-06-11 Negative pressure breaker for water supply equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004173761A JP4390635B2 (en) 2004-06-11 2004-06-11 Negative pressure breaker for water supply equipment

Publications (2)

Publication Number Publication Date
JP2005350985A true JP2005350985A (en) 2005-12-22
JP4390635B2 JP4390635B2 (en) 2009-12-24

Family

ID=35585680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004173761A Expired - Fee Related JP4390635B2 (en) 2004-06-11 2004-06-11 Negative pressure breaker for water supply equipment

Country Status (1)

Country Link
JP (1) JP4390635B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009007846A (en) * 2007-06-28 2009-01-15 Toto Ltd Flush toilet
WO2009017459A1 (en) * 2007-07-31 2009-02-05 Kai Chye Stephen Seow A vacuum break valve structure
WO2012101847A1 (en) * 2011-01-27 2012-08-02 三洋電機株式会社 Portable toilet
JP2012152440A (en) * 2011-01-27 2012-08-16 Sanyo Electric Co Ltd Portable toilet
CN103327864A (en) * 2011-01-27 2013-09-25 三洋电机株式会社 Portable toilet
CN105888020A (en) * 2016-06-14 2016-08-24 王晓峰 Negative-pressure water distributor for toilet
JP2018109335A (en) * 2017-01-06 2018-07-12 Toto株式会社 Washing water supply device and water closet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5158933U (en) * 1974-11-01 1976-05-10
JPS58145384U (en) * 1982-03-18 1983-09-30 松下電器産業株式会社 hot water tank
JPH09256443A (en) * 1996-03-19 1997-09-30 Toto Ltd Hot water tank
JP2003139403A (en) * 2001-10-31 2003-05-14 Toto Ltd Sanitary cleaning device
JP2003214550A (en) * 2002-01-23 2003-07-30 Noritz Corp Negative pressure breaking valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5158933U (en) * 1974-11-01 1976-05-10
JPS58145384U (en) * 1982-03-18 1983-09-30 松下電器産業株式会社 hot water tank
JPH09256443A (en) * 1996-03-19 1997-09-30 Toto Ltd Hot water tank
JP2003139403A (en) * 2001-10-31 2003-05-14 Toto Ltd Sanitary cleaning device
JP2003214550A (en) * 2002-01-23 2003-07-30 Noritz Corp Negative pressure breaking valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009007846A (en) * 2007-06-28 2009-01-15 Toto Ltd Flush toilet
WO2009017459A1 (en) * 2007-07-31 2009-02-05 Kai Chye Stephen Seow A vacuum break valve structure
WO2012101847A1 (en) * 2011-01-27 2012-08-02 三洋電機株式会社 Portable toilet
JP2012152440A (en) * 2011-01-27 2012-08-16 Sanyo Electric Co Ltd Portable toilet
CN103327864A (en) * 2011-01-27 2013-09-25 三洋电机株式会社 Portable toilet
CN105888020A (en) * 2016-06-14 2016-08-24 王晓峰 Negative-pressure water distributor for toilet
CN105888020B (en) * 2016-06-14 2017-09-29 王晓峰 Negative pressure injection well downhole flow regulator for closet
JP2018109335A (en) * 2017-01-06 2018-07-12 Toto株式会社 Washing water supply device and water closet

Also Published As

Publication number Publication date
JP4390635B2 (en) 2009-12-24

Similar Documents

Publication Publication Date Title
US9637899B2 (en) Vacuum breaker, automatic flushing system for toilet and electronic bidet toilet
JP4390635B2 (en) Negative pressure breaker for water supply equipment
JP2009007846A (en) Flush toilet
US20170254058A1 (en) Toilet device
KR200447022Y1 (en) Washing water supply system in toilet bowl
JP2016037743A (en) Trap piping structure for waterproof pan of washing machine
KR101356397B1 (en) Washing agent auto supplier for a toilet bowl
JP2017008967A (en) Float type steam trap
JP5868191B2 (en) Toilet bowl cleaning device and flush toilet bowl
JP2009248984A (en) Server for drinking water, and venting means for water storage tank used therefor
CN111456175A (en) Overflow anti-siphon valve, closestool flushing system and closestool
JP2009002075A (en) Flush toilet bowl
JP4714613B2 (en) Pump tank
JP5635369B2 (en) Chemical water flow pipe for chemical liquid supply device
KR200480074Y1 (en) Cleaner discharger for toilet bowl
CN210890326U (en) Built-in liquid level controller and liquid level control system thereof
KR102107691B1 (en) Bubble production control system for foam-type toilet
KR101721377B1 (en) Water saving toilet which has quick trap charging injector for fast siphon
KR101418216B1 (en) Apparatus of feeding cleansing agent with fixed amount into water tank for toilet bowl
KR101282271B1 (en) Bowl make-up water supply adjustable toilet fixture of the make-up water supply hose
KR20100001476U (en) Humidifier having function top water supply and method controlling thereof
KR102439410B1 (en) Apparatus for Supplying Washing Water in Toilet Stool with Backflow Prevention
KR200453506Y1 (en) water saving device
KR20170139252A (en) Device for preventing fuel overflow of vehicle fuel system
KR20220081304A (en) Toilet bowl cleaning device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060613

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080619

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090929

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20091006

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121016

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees