JP3483523B2 - Water saving - Google Patents

Description

【発明の詳細な説明】 【０００１】 【発明の属する技術分野】本発明は、各種の水栓やシャ
ワーヘッド等の内部に組み込んで吐水流量を規制するよ
うにして節水効果を得るようにした節水コマに関する。 【０００２】 【従来の技術】一般家庭でのキッチンで使用される単水
栓や湯水混合栓等は手動式のハンドルによって弁開度を
変えて吐水流量を調整するものが殆どである。浴室に設
備されるシャワーにおいても、湯水混合栓から分岐した
ホースの根元に設けたハンドルで流路調整するのが一般
的である。 【０００３】このような水栓やシャワー設備では、従来
から節水を図るために節水コマを水栓本体の中やシャワ
ーヘッドの内部に組み込むことが行なわれている。この
ような節水コマとしては、たとえば特開平９−９５９８
５号公報等に記載されたものがある。この公報に記載の
節水コマやその他にも各種提案されている節水コマは、
水栓の本体やシャワーヘッドの内部流路を絞ることによ
って水栓の弁開度にほぼ比例する流量を規制して節水を
図るというのがその基本である。 【０００４】 【発明が解決しようとする課題】しかしながら、従来の
節水コマは流路抵抗を与えるために複雑な形状としたも
のが多い。このように複雑な形状であると、製造上での
制約が多くなるほか、流路抵抗の設定も難しくなり、節
水効果にもばらつきを生じやすい。 【０００５】そこで、本発明は、製造がしやすくしかも
節水量の設定にも自由度を持つ好適な節水コマを提供す
ることを目的とする。 【０００６】 【課題を解決するための手段】本発明は、水栓等の内部
流路に組み込まれ吐水量を絞り及び流路抵抗によって規
制する節水コマであって、上流側に臨む第１部材とこれ
に着脱自在に配置されて下流側に臨む第２部材との組合
せとし、前記第１部材には流入路を貫通させて設け、前
記第２部材には前記流入路に連通し当該流入路より大径
の滞留部と当該滞留部に連通する流出路とを貫通させて
設けたことを特徴とする。 【０００７】本発明では、第１部材には流入路を貫通さ
せ、第２部材には滞留部と流出路を貫通させているの
で、流入路や滞留部及び流出路の内径を自由に加工して
変更することができる。したがって、給水圧の高低等に
応じて絞り及び流路抵抗を変えることができ、設置条件
に応じた節水効果が達成される。 【０００８】 【発明の実施の形態】以下、本発明の実施の形態につい
て図面に基づいて説明する。図１は本発明の実施の形態
における節水コマの縦断面、図２は外観斜視図である。 【０００９】図において、節水コマ１は金属または合成
樹脂から成形されたもので、互いにねじ結合された第１
部材２と第２部材とから構成されている。第１部材２は
上端にフランジ２ａを形成するとともに下端側の内周に
雌ねじ２ｂを形成したもので、中央には軸線方向に流入
路２ｃを貫通させている。第２部材は上端側の外周に雌
ねじ２ｂに螺合する雄ねじ３ａを形成するとともに、内
部には滞留部３ｂと流出路３ｃを形成したものである。
滞留部３ｂは第１部材２の流入路２ｃよりも内径が大き
く、流出路３ｃは流入路２ｃの内径よりも小さい。 【００１０】第１部材２と第３部材２とをそれぞれの雌
ねじ２ｂと雄ねじ３ａの螺合によっって一体化すると、
図１に示すように、流入路２ｃに対して滞留部３ｂ及び
流出路３ｃは同軸上に配列される。そして、上端が開放
している第２部材３の滞留部３ｂは第１部材２の下端に
よって閉じられ流線方向に直交する断面が円形の空洞部
として形成される。 【００１１】ここで、本発明では、流入路２ｃと滞留部
３ｂ及び流出路３ｃの内径は、前述した条件の流出路３
ｃ＜流入路２ｃ＜滞留部３ｂのもとで、自由に変更でき
るようにする。すなわち、節水コマ１は第１部材２と第
２部材３とに分けているので、流入路２ｃと滞留部３ｂ
及び流出路３ｃの孔開け加工は簡単にでき、これらの各
部の内径を自由に変えることができる。このように流入
路２ｃと滞留部３ｂ及び流出路３ｃの内径の大きさを変
えることにより、節水コマ１を通過する水に対して絞り
度及び流路抵抗をさまざまに設定できる。したがって、
水栓に接続した給水源や給湯源等の供給圧に対して適切
となるような、各部の内径を選択することによって節水
効果を最適化することができる。 【００１２】図３は節水コマ１を湯水混合栓に組み込ん
だ例を示す切欠正面図である。図３において、湯水混合
栓の本体１１には給水管１１ａと給湯管１１ｂが接続さ
れ、これらの給水管１１ａ及び給湯管１１ｂからの水と
湯の量比を設定する弁を操作するハンドル１１ｃ，１１
ｄを取り付けている。そして、水側及び湯側の弁に連通
する混合室１１ｅの底面に吐水管１２が旋回自在に接続
され、節水コマ１はこの吐水管１２の基端部に連通させ
て本体１１の中に組み込まれている。 【００１３】以上の構成において、湯水混合栓の本体１
１に節水コマ１を組み込んだものでは、混合室１１ｅか
らの水または湯との混合水は節水コマ１を通過して吐水
管１２に供給される。 【００１４】節水コマ１を通過する水は流入路２ｃから
滞留部３ｂを経由して流出路３ｃから吐水管１２に流れ
る。このとき流入路２ｃでは流路が絞られ滞留部３ｂで
は流路が急激に拡大するので、水に対する流路抵抗が大
きくなり、流量も絞られる。そして、滞留部３ｂからの
水は内径が小さい流出路３ｃによって増速されて吐水管
１２へ送り出される。このように、節水コマ１の入側か
ら出側まで流路断面を小から大及び小に変化させること
によって、混合室１１ｅからの水に流路抵抗を与えて流
量を絞り、これにより節水が可能となる。 【００１５】ここで、本発明では、節水コマ１を第１部
材２と第２部材３とによって構成しているので、それぞ
れの流入路２ｃ及び滞留部３ｂと流出路３ｃの内径をさ
まざまに変えた部品として揃えることができる。たとえ
ば、給水圧及び給湯圧が高いような場合では、流入路２
ｃや流出路３ｃを小径にして抵抗を大きくして絞り度す
なわち流路抵抗を大きくする。これにより、給水圧及び
給湯圧が高い条件に対しても、吐水管１２からの吐水流
量を規制して節水することができる。逆に、給水圧や給
湯圧が低いときには、流入路２ｃ及び流出路３ｃを少し
大径とすることによって流路抵抗を小さく設定すれば、
同様に吐水流量を規制して節水効果を持たせることがで
きる。また、流入路２ｃ及び流出路３ｃの内径だけでな
く、滞留部３ｂの内径を変えることによっても、節水コ
マ１を通過するときの流路抵抗を変えることができ、給
水圧及び給湯圧に応じた節水が可能となる。 【００１６】このように、本発明では、節水コマ１を第
１部材２と第２部材３との組合せとしそれぞれの流入路
２ｃ及び滞留部３ｂと流出路３ｃの内径を簡単に変更す
る加工が可能である。したがって、給水圧及び給湯圧の
条件に見合う各部の内径の組合せとすれば、最適な節水
効果が得られる。すなわち、従来の節水コマでは製作し
た流路孔等の内径が固定されたものなので、設置場所に
応じて給水圧や給湯圧が異なる水栓に適用した場合に
は、絞り量が大き過ぎたり小さ過ぎたりする場合があ
る。これに対し、本発明では、第１部材２と第２部材３
の組合せであって、それぞれの流入路２ｃや滞留部３ｂ
及び流出路３ｃの内径を簡単に変更できるので、設置条
件に対応した節水が可能となる。 【００１７】 【発明の効果】本発明では、第１部材には流入路を貫通
させ、第２部材には滞留部と流出路を貫通させているの
で、流入路や滞留部及び流出路の内径を自由に加工して
簡単に変更でき、給水圧の高低等に応じて絞り及び流路
抵抗を変えることができる。したがって、水栓等の設置
条件に応じた節水効果を得ることができ、汎用性を拡大
させることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water saving device which is incorporated in various faucets, shower heads and the like so as to regulate a water discharge flow rate to obtain a water saving effect. About the top. 2. Description of the Related Art In most cases, a single faucet, a hot water mixing faucet, and the like used in a kitchen at home are used to adjust a water discharge flow rate by changing a valve opening degree with a manual handle. Also in a shower provided in a bathroom, it is common to adjust a flow path with a handle provided at a base of a hose branched from a hot and cold water mixing tap. In such faucets and shower facilities, a water-saving top has conventionally been incorporated into the faucet body or the inside of the shower head in order to save water. As such a water-saving top, for example, Japanese Patent Laid-Open No. 9-9598
No. 5 publication and the like. The water-saving tops described in this publication and various other proposed water-saving tops are
Basically, the water flow is reduced by restricting the flow rate which is substantially proportional to the valve opening of the faucet by restricting the internal flow passage of the faucet body or the shower head. [0004] However, many of the conventional water-saving tops have a complicated shape in order to provide channel resistance. With such a complicated shape, there are many restrictions in manufacturing, and it is difficult to set the flow path resistance, and the water saving effect tends to vary. Accordingly, an object of the present invention is to provide a suitable water-saving top which is easy to manufacture and has a degree of freedom in setting a water-saving amount. SUMMARY OF THE INVENTION The present invention relates to a water-saving top which is incorporated in an internal flow path such as a water faucet and regulates the amount of water discharged by restricting the flow path and the resistance of the flow path. And a second member removably disposed on the first member and facing the downstream side. The first member is provided so as to penetrate an inflow path, and the second member communicates with the inflow path and communicates with the inflow path. It is characterized in that it is provided so as to penetrate a larger diameter retaining portion and an outflow passage communicating with the retaining portion. In the present invention, since the first member penetrates the inflow path and the second member penetrates the stagnant portion and the outflow path, the inner diameter of the inflow path, the stagnant portion and the outflow path can be freely processed. Can be changed. Therefore, the throttle and the flow path resistance can be changed according to the level of the water supply pressure and the like, and the water saving effect according to the installation conditions is achieved. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal section of a water-saving top according to an embodiment of the present invention, and FIG. 2 is an external perspective view. In FIG. 1, a water-saving top 1 is formed of metal or synthetic resin, and is firstly screwed to each other.
It is composed of a member 2 and a second member. The first member 2 has a flange 2a formed at an upper end and a female screw 2b formed at an inner periphery on a lower end side, and has an inflow passage 2c penetrating in the axial direction at the center. The second member has a male screw 3a screwed into the female screw 2b on the outer periphery on the upper end side, and has a stagnant portion 3b and an outflow passage 3c formed therein.
The stagnant portion 3b has a larger inner diameter than the inflow channel 2c of the first member 2, and the outflow channel 3c is smaller than the inner diameter of the inflow channel 2c. When the first member 2 and the third member 2 are integrated by screwing the female screw 2b and the male screw 3a,
As shown in FIG. 1, the stagnation portion 3b and the outflow channel 3c are arranged coaxially with the inflow channel 2c. The stagnant portion 3b of the second member 3 whose upper end is open is closed by the lower end of the first member 2 and is formed as a hollow portion having a circular cross section orthogonal to the streamline direction. Here, in the present invention, the inner diameters of the inflow channel 2c, the stagnant portion 3b, and the outflow channel 3c are determined by the outflow channel 3 under the above-described conditions.
Under the condition of c <inflow channel 2c <retaining portion 3b, it can be freely changed. That is, since the water-saving top 1 is divided into the first member 2 and the second member 3, the inflow passage 2c and the stagnation portion 3b
In addition, the boring process of the outflow passage 3c can be easily performed, and the inner diameter of each portion can be freely changed. By changing the inner diameters of the inflow channel 2c, the stagnant portion 3b, and the outflow channel 3c in this manner, the degree of restriction and the flow path resistance for water passing through the water-saving top 1 can be variously set. Therefore,
The water saving effect can be optimized by selecting the inner diameter of each part so as to be appropriate for the supply pressure of a water supply source or a hot water supply source connected to the faucet. FIG. 3 is a cutaway front view showing an example in which the water-saving top 1 is incorporated in a hot and cold water mixing tap. In FIG. 3, a water supply pipe 11a and a hot water supply pipe 11b are connected to a main body 11 of the hot and cold water mixing tap, and a handle 11c for operating a valve for setting a ratio of water to hot water from the water supply pipe 11a and the hot water supply pipe 11b. 11
d is attached. A water discharge pipe 12 is pivotally connected to the bottom surface of the mixing chamber 11e communicating with the water-side and hot-water-side valves, and the water-saving top 1 is connected to the base end of the water discharge pipe 12 and incorporated into the main body 11. Have been. In the above configuration, the main body 1 of the hot and cold water mixing tap is provided.
1, the water mixed with water or hot water from the mixing chamber 11e passes through the water-saving top 1 and is supplied to the water discharge pipe 12. The water passing through the water-saving top 1 flows from the inflow channel 2c to the water discharge pipe 12 from the outflow channel 3c via the retaining portion 3b. At this time, the flow path is narrowed in the inflow path 2c, and the flow path is rapidly expanded in the stagnant portion 3b. Therefore, the flow path resistance to water is increased, and the flow rate is also reduced. Then, the water from the stagnation portion 3 b is accelerated by the outflow passage 3 c having a small inner diameter and sent out to the water discharge pipe 12. As described above, by changing the flow path cross section from small to large and small from the entrance side to the exit side of the water-saving top 1, the flow from the mixing chamber 11 e is given a flow path resistance to reduce the flow rate, thereby reducing the flow rate. It becomes possible. Here, in the present invention, since the water-saving top 1 is constituted by the first member 2 and the second member 3, the inner diameters of the inflow channel 2c, the stagnant portion 3b and the outflow channel 3c are variously changed. Can be arranged as a part. For example, in a case where the water supply pressure and the hot water supply pressure are high, the inflow path 2
The diameter of c and the outflow path 3c are made smaller to increase the resistance, thereby increasing the degree of restriction, that is, the flow path resistance. Thereby, even under conditions where the water supply pressure and the hot water supply pressure are high, it is possible to restrict the amount of water discharged from the water discharge pipe 12 to save water. Conversely, when the water supply pressure or the hot water supply pressure is low, if the flow path resistance is set small by making the inflow path 2c and the outflow path 3c slightly larger in diameter,
Similarly, the water discharge flow rate can be regulated to provide a water saving effect. Also, by changing not only the inner diameters of the inflow channel 2c and the outflow channel 3c, but also the inner diameter of the retaining portion 3b, the flow path resistance when passing through the water-saving top 1 can be changed, and the flow resistance depends on the water supply pressure and the hot water supply pressure. Water can be saved. As described above, according to the present invention, the water-saving top 1 is combined with the first member 2 and the second member 3 to easily change the inner diameters of the inflow passage 2c, the stagnant portion 3b, and the outflow passage 3c. It is possible. Therefore, if the combination of the inner diameters of the respective parts is matched to the conditions of the water supply pressure and the hot water supply pressure, an optimum water saving effect can be obtained. In other words, in the conventional water-saving top, the inner diameter of the channel hole etc. manufactured is fixed, so if it is applied to a faucet with a different water supply pressure or hot water supply pressure depending on the installation location, the throttle amount is too large or small. May pass. On the other hand, in the present invention, the first member 2 and the second member 3
And the respective inflow passages 2c and stagnation portions 3b
In addition, since the inner diameter of the outflow passage 3c can be easily changed, it is possible to save water in accordance with the installation conditions. According to the present invention, since the first member penetrates the inflow path and the second member penetrates the stagnant portion and the outflow channel, the inner diameters of the inflow channel, the stagnant portion and the outflow channel are provided. Can be freely processed and easily changed, and the throttle and the flow path resistance can be changed according to the level of the water supply pressure. Therefore, it is possible to obtain a water saving effect according to the installation conditions of the faucet and the like, and to expand versatility.

【図面の簡単な説明】 【図１】 本発明の実施の形態における節水コマの縦断
面図である。 【図２】 本発明の実施の形態における節水コマの外観
斜視図である。 【図３】 本発明の節水コマを湯水混合栓に組み込んだ
例を示す切欠正面図である。 【符号の説明】 １ 節水コマ ２ 第１部材 ２ａ フランジ ２ｂ 雌ねじ ２ｃ 流入路 ３ 第２部材 ３ａ 雄ねじ ３ｂ 滞留部 ３ｃ 流出路 １１ 本体 １１ａ 給水管 １１ｂ 給湯管 １１ｃ，１１ｄ ハンドル １１ｅ 混合室 １２ 吐水管BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a water-saving top according to an embodiment of the present invention. FIG. 2 is an external perspective view of a water-saving top according to the embodiment of the present invention. FIG. 3 is a cutaway front view showing an example in which the water-saving top of the present invention is incorporated in a hot and cold water mixing tap. [Description of Signs] 1 Water-saving top 2 First member 2a Flange 2b Female screw 2c Inflow path 3 Second member 3a Male screw 3b Retaining portion 3c Outflow path 11 Main body 11a Water supply pipe 11b Hot water supply pipe 11c, 11d Handle 11e Mixing chamber 12 Water discharge pipe

Claims (1)

(57)【特許請求の範囲】 【請求項１】 水栓等の内部流路に組み込まれ吐水量を
絞り及び流路抵抗によって規制する節水コマであって、
上流側に臨む第１部材とこれに着脱自在に配置されて下
流側に臨む第２部材との組合せとし、前記第１部材には
流入路を貫通させて設け、前記第２部材には前記流入路
に連通し当該流入路より大径の滞留部と当該滞留部に連
通する流出路とを貫通させ、前記滞留部および前記流出
路を前記流入路に対して同軸上にのみ設けたことを特徴
とする節水コマ。(57) [Claims 1] A water-saving top which is incorporated in an internal flow path such as a faucet and restricts the amount of discharged water by restricting flow path resistance.
A combination of a first member facing the upstream side and a second member detachably mounted on the first member facing the downstream side is provided, and the first member is provided through an inflow path, and the inflow passage is provided in the second member. A stagnation portion having a diameter larger than that of the inflow passage and an outflow passage communicating with the stagnation portion.
A water-saving top, wherein a path is provided only coaxially with respect to the inflow path .