JPH09296871A - Seal structure and combination faucet device using it - Google Patents

Seal structure and combination faucet device using it

Info

Publication number
JPH09296871A
JPH09296871A JP8112463A JP11246396A JPH09296871A JP H09296871 A JPH09296871 A JP H09296871A JP 8112463 A JP8112463 A JP 8112463A JP 11246396 A JP11246396 A JP 11246396A JP H09296871 A JPH09296871 A JP H09296871A
Authority
JP
Japan
Prior art keywords
sliding
valve body
water
seal member
elastic seal
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
JP8112463A
Other languages
Japanese (ja)
Other versions
JP3791046B2 (en
Inventor
博明 ▲よし▼田
Hiroaki Yoshida
Shigeru Shirai
白井　　滋
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11246396A priority Critical patent/JP3791046B2/en
Publication of JPH09296871A publication Critical patent/JPH09296871A/en
Application granted granted Critical
Publication of JP3791046B2 publication Critical patent/JP3791046B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Sliding Valves (AREA)
  • Temperature-Responsive Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To restrain slide frictional force from being increased as well as to reduce slide frictional force of a shaft member and a valve element in a seal structure or a combination faucet device using the seal structure. SOLUTION: A holding groove 28 for holding an O-ring 29 is provided on a part of a slide guide surface 27 of a housing 1, a slide groove 30 is provided on the outer peripheral surface of a valve element 20, a seal layer 29a and a hollow part 29b are provided on the O-ring 29 composed of a holding part 29c held by the holding groove 29, and an elastic sliding part 29d for restraining slide frictional force from being increased in the axial direction caused by increase of interference in the radial direction of a valve element 45, and therefore, slide frictional force of the valve element 45 is reduced, and slide frictional force in the axial direction of the valve element 45 is restrained from being increased caused by increase of interference of the O-ring 29.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、軸線方向への摺動
部を有するシール構造および湯と水の混合比率を調節し
て適温を得る湯水混合技術に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal structure having a sliding portion in the axial direction and a hot and cold water mixing technique for adjusting a mixing ratio of hot water and water to obtain an appropriate temperature.

【０００２】[0002]

【従来の技術】従来、この種のシール構造を有する湯水
混合装置としては、図８（例えば特開平６−１４７３３
３号公報）に示すようなものがあった。2. Description of the Related Art Conventionally, as a hot and cold water mixing apparatus having a sealing structure of this type, there is shown in FIG.
3).

【０００３】図８において、ハウジング１の周壁には軸
線方向に間隔をおいて水流入口１ａおよび湯流入口１ｂ
をそれぞれ開けると共に、これらの流入口１ａ、１ｂに
連通する下流側には混合水流出口１ｃが開けてある。水
流入口１ａは湯水混合装置の本体の中の給水室に連通
し、同様に湯流入口１ｂと混合水流出口１ｃはそれぞれ
湯室および混合室に連通し、この混合室を経由して混合
水が吐出端から吐出される。In FIG. 8, a water inlet 1a and a hot water inlet 1b are axially spaced on the peripheral wall of the housing 1.
And a mixed water outlet 1c is opened on the downstream side communicating with the inlets 1a and 1b. The water inlet 1a communicates with a water supply chamber in the main body of the hot water mixing apparatus, and similarly, the hot water inlet 1b and the mixed water outlet 1c respectively communicate with the hot water chamber and the mixing chamber, and the mixed water passes through the mixing chamber. It is discharged from the discharge end.

【０００４】ハウジング１の内部には、水流入口１ａ側
および湯流入口１ｂ側にそれぞれ水弁座２および湯弁座
３が設けてある。そしてこれら水弁座２と湯弁座３との
間には、軸線方向に移動可能な略Ｈ状の縦断面形状の温
度調節用の弁体４が組み込まれている。この弁体４は、
その軸線方向の両端を水弁座２および湯弁座３との着座
面とし、水側と湯側とを区画する隔壁４ａに連通口４ｂ
が開けられている。そして弁体４の周りには環状のパッ
キン５を組み込み、このパッキン５をハウジング１の内
壁に密着させて水側と湯側とを遮断している。Inside the housing 1, a water valve seat 2 and a hot water valve seat 3 are provided on the water inlet 1a side and the hot water inlet 1b side, respectively. Between the water valve seat 2 and the hot water valve seat 3, a temperature-adjustable valve body 4 having a substantially H-shaped vertical cross-section that is movable in the axial direction is incorporated. This valve body 4
Both ends in the axial direction are used as seating surfaces for the water valve seat 2 and the hot water valve seat 3, and a communication port 4b is provided in a partition wall 4a that divides the water side from the hot water side.
Has been opened. An annular packing 5 is incorporated around the valve body 4, and the packing 5 is brought into close contact with the inner wall of the housing 1 to shut off the water side and the hot water side.

【０００５】ハウジング１の内部は、弁体４によって水
室１ｄおよび湯室１ｅに区画され、これらの下流に混合
室１ｆが形成される。そして混合室１ｆから水室１ｄに
かけて、一端が弁体４の隔壁４ａに突き当たるスリーブ
６が組み込まれ、このスリーブ６は水室１ｄに臨む周壁
に水用の開口６ａを開け、隔壁４ａの連絡口４ｂを包囲
する内径に形成してある。そして、スリーブ６によって
水室１ｄおよび湯室１ｅと混合室１ｆとが連通し、弁体
４の水弁座２および湯弁座３に対する弁開度に応じた量
比の水と湯が混合室１ｆへ供給される。The inside of the housing 1 is divided into a water chamber 1d and a hot water chamber 1e by a valve body 4, and a mixing chamber 1f is formed downstream of these. A sleeve 6 whose one end abuts against the partition wall 4a of the valve body 4 is incorporated from the mixing chamber 1f to the water chamber 1d. The sleeve 6 has an opening 6a for water formed in the peripheral wall facing the water chamber 1d, and a communication port of the partition wall 4a. It is formed to have an inner diameter surrounding 4b. Then, the water chamber 1d and the hot water chamber 1e are communicated with the mixing chamber 1f by the sleeve 6, and the water and hot water having a volume ratio according to the valve opening degree of the valve body 4 with respect to the water valve seat 2 and the hot water valve seat 3 are mixed chambers. Is supplied to 1f.

【０００６】混合室１ｆには、ハウジング１の内壁に一
端が突き当たり他端をスリーブ６の端面に嵌め込んだ形
状記憶合金のスプリング７が組み込まれている。このス
プリング７は、混合室１ｆを通過する混合水の温度に応
じて膨張、収縮し、吐出される混合水の温度が設定温度
に保持されるように弁体４をシフトさせる機能を持つ。In the mixing chamber 1f, a shape memory alloy spring 7 having one end which is in contact with the inner wall of the housing 1 and the other end which is fitted to the end face of the sleeve 6 is incorporated. This spring 7 has a function of expanding and contracting according to the temperature of the mixed water passing through the mixing chamber 1f, and shifting the valve body 4 so that the temperature of the discharged mixed water is maintained at the set temperature.

【０００７】弁体４の位置設定は、ハウジング１に対し
てネジ接合したスピンドル８のハンドル８ａによって行
われる。このスピンドル８の一端はスリップワッシャを
介してスプリング７に連接され、ハンドル８ａの操作に
よって軸線方向に移動させることにより、スプリング７
を介して弁体４を設定温度値に対応した位置に設定す
る。さらに、湯室１ｅにはスプリング７と反対方向に弁
体４を付勢するバイアススプリング９が組み込まれ、こ
のバイアススプリング９は弁体４を水弁座２側に移動さ
せる機能を持ち、温度設定用のスプリング７に対して弁
体４の位置をバランスさせ湯水の混合比が加減されるよ
うになっていた。The position of the valve body 4 is set by the handle 8a of the spindle 8 which is screwed to the housing 1. One end of this spindle 8 is connected to the spring 7 via a slip washer, and is moved in the axial direction by operating the handle 8a, so that the spring 7
The valve body 4 is set to a position corresponding to the set temperature value via. Further, a bias spring 9 for urging the valve body 4 in the direction opposite to the spring 7 is incorporated in the hot water chamber 1e, and the bias spring 9 has a function of moving the valve body 4 to the water valve seat 2 side and sets the temperature. The position of the valve body 4 is balanced with respect to the spring 7 for use so that the mixing ratio of hot and cold water is adjusted.

【０００８】しかし上記のような構成において、図９の
ように弁体４にパッキン５が一体となっていることか
ら、給水圧Ｐｃと給湯圧ＰHとの差圧による作用力Ｆが
弁体４を押す力となり、設定温度からずれたりする悪影
響があるということから、図１０のような構成が提案さ
れている。図１０において、内壁ガイド１ｇに環状の凹
部１ｈを設け、この凹部１ｈの中にパッキン５を嵌め込
んで保持した構造で、前記給水圧Ｐｃと給湯圧ＰHとの
差圧によって弁体４を押す力Ｆの値が零になって、設定
温度が安定保持できるという説明がされている。また、
水流入口１ａと湯流入口１ｂの間を移動する弁体４の摺
動摩擦力を低減するために、パッキン５の代わりに断面
形状が図１１（ａ）〜（ｃ）に示すような形状である樹
脂製のシール環１０を設けた構成も提案されている。図
１１において、１０ａはハウジング１の内壁と接する突
起であり、その接触面積を小さくして摺動摩擦力を低減
するというものである。However, in the above structure, since the packing 5 is integrated with the valve body 4 as shown in FIG. 9, the acting force F due to the pressure difference between the water supply pressure Pc and the hot water supply pressure PH is the valve body 4. Since it has a bad effect of pushing the button and deviating from the set temperature, a configuration as shown in FIG. 10 has been proposed. In FIG. 10, the inner wall guide 1g is provided with an annular recess 1h, and the packing 5 is fitted and held in the recess 1h. The valve body 4 is pushed by the pressure difference between the water supply pressure Pc and the hot water supply pressure PH. It is explained that the value of the force F becomes zero and the set temperature can be stably maintained. Also,
In order to reduce the sliding frictional force of the valve body 4 moving between the water inlet 1a and the hot water inlet 1b, the packing 5 has a cross-sectional shape as shown in FIGS. 11 (a) to 11 (c). A configuration in which a resin seal ring 10 is provided is also proposed. In FIG. 11, reference numeral 10a is a protrusion that comes into contact with the inner wall of the housing 1, and the contact area is reduced to reduce the sliding frictional force.

【０００９】[0009]

【発明が解決しようとする課題】しかし現実としては、
図１０の構造にしても給水圧Ｐｃおよび給湯圧ＰHが作
用し弁体４を押す実効受圧面積を零にできる構成ではな
いため、説明されているような給水圧Ｐｃおよび給湯圧
ＰHの差圧による作用力Ｆが零にできるというものでは
なかった。[Problems to be Solved by the Invention] However, in reality,
Even with the structure of FIG. 10, the structure is not such that the effective pressure receiving area that pushes the valve body 4 due to the action of the water supply pressure Pc and the hot water supply pressure PH can be made zero, so the differential pressure between the water supply pressure Pc and the hot water supply pressure PH as described It was not the case that the acting force F due to could be made zero.

【００１０】さらに上記のような従来の湯水混合装置に
おいて、水流入口１ａと湯流入口１ｂの間を遮断シール
するパッキン５の摺動摩擦力が大きいことから、形状記
憶合金のスプリング７およびバイアススプリング９の発
生力をともに大きくする等の方策によって、温度ヒステ
リシスや温度ずれを小さくすることが必要になる。Further, in the conventional hot and cold water mixing apparatus as described above, since the sliding frictional force of the packing 5 that seals between the water inlet 1a and the hot water inlet 1b is large, the shape memory alloy spring 7 and the bias spring 9 are provided. It is necessary to reduce the temperature hysteresis and the temperature shift by taking measures such as increasing both the force of generating

【００１１】たとえば図８において、形状記憶合金のス
プリング７とバイアススプリング９の力がバランスする
位置に弁体４が安定しているときに、給水圧Ｐｃが変動
して混合室１ｆの温度が変動すると、形状記憶合金のス
プリング９の温度変化に伴って、そのスプリング９の力
が変化して、弁体４を移動させて設定温度を保持するべ
きであるが、パッキン５の摺動摩擦抵抗により弁体４の
移動が阻害される。図９および図１０のいずれの構成お
いても、パッキン５との摺動面は弁体４の外径とほぼ同
じ大きい径シール部なので、パッキン５による摺動摩擦
力はいずれも大きく、図８と同様にパッキン５の摺動摩
擦抵抗により弁体４の移動が阻害される。For example, in FIG. 8, when the valve body 4 is stable at a position where the forces of the shape memory alloy spring 7 and the bias spring 9 are balanced, the feed water pressure Pc fluctuates and the temperature of the mixing chamber 1f fluctuates. Then, as the temperature of the shape memory alloy spring 9 changes, the force of the spring 9 changes and the valve body 4 should be moved to maintain the set temperature. Movement of the body 4 is inhibited. 9 and 10, since the sliding surface with the packing 5 is a large-diameter seal portion that is almost the same as the outer diameter of the valve body 4, the sliding frictional force due to the packing 5 is large. Similarly, the sliding frictional resistance of the packing 5 hinders the movement of the valve body 4.

【００１２】そこで温度変化に伴うスプリング９の力の
変化量を大きくすれば、相対的にパッキン５による摺動
摩擦の影響を軽減することができる。ところが、温度変
化に伴うスプリング９の発生力を大きく変化させるため
に、形状記憶合金のスプリング７もバイアススプリング
９も、ともに太く大きいスプリングになってしまってい
た。Therefore, if the amount of change in the force of the spring 9 due to the temperature change is increased, the influence of sliding friction due to the packing 5 can be relatively reduced. However, both the shape memory alloy spring 7 and the bias spring 9 are thick and large in order to greatly change the force generated by the spring 9 due to temperature change.

【００１３】したがって、湯水混合装置が大型化した
り、太く大きい形状記憶合金スプリング７の熱容量が大
きくなって応答時間が遅くなったり、形状記憶合金のス
プリング９および湯水混合装置がコスト高になったり、
設定温度を変えるときハンドル８ａ操作が重いなど多く
の問題点があった。Therefore, the size of the hot and cold water mixing device becomes large, the heat capacity of the thick and large shape memory alloy spring 7 becomes large and the response time becomes slow, and the cost of the shape memory alloy spring 9 and the hot and cold water mixing device becomes high.
There were many problems such as heavy operation of the handle 8a when changing the set temperature.

【００１４】また、図１１のように樹脂製のシール環１
０を用いた場合、スケールやゴミなどが弁体４摺動時に
ハウジング１の内壁と突起１０ａの間に咬み込むと弁体
４がロックされたり、ハウジング１の内壁と突起１０ａ
の間に隙間をでき湯水間での漏れを生じるため温度調節
を行えないという問題点があった。Further, as shown in FIG. 11, a resin seal ring 1 is used.
When 0 is used, the valve body 4 is locked when scale or dust is caught between the inner wall of the housing 1 and the projection 10a when the valve body 4 slides, or the inner wall of the housing 1 and the projection 10a are locked.
There is a problem in that the temperature cannot be adjusted because a gap is formed between the two and leakage occurs between hot and cold water.

【００１５】さらに、シール環１０またはパッキン５の
径方向の肉厚などが大きくなり、しめしろが生じると弁
体４の摺動摩擦力が大幅に増大する可能性があった。す
なわち、ハウジング１の内径および弁体４の溝径および
シール環１０の肉厚の寸法精度が要求され、製造コスト
が高くなるという問題点があった。Further, if the radial thickness of the seal ring 10 or the packing 5 is increased and interference is produced, the sliding frictional force of the valve body 4 may be significantly increased. That is, the dimensional accuracy of the inner diameter of the housing 1, the groove diameter of the valve body 4, and the wall thickness of the seal ring 10 is required, and there is a problem that the manufacturing cost increases.

【００１６】本発明は上記問題点を解決するものであ
り、弾性シール部材の径方向のしめしろが増加しても軸
線方向の摺動摩擦力を増大することがなく、確実にシー
ルを行えるシール構造を提供することを第一の課題とし
ている。The present invention solves the above-mentioned problems and has a seal structure capable of performing reliable sealing without increasing the sliding frictional force in the axial direction even if the radial interference of the elastic seal member increases. The first issue is to provide.

【００１７】また効果的に感温体ばねおよびバイアスば
ねを細く小さくでき、応答が速く、コンパクトで、小さ
い駆動力で操作できる湯水混合装置を提供することを第
二の課題としている。A second object of the present invention is to provide a hot and cold water mixing apparatus which can effectively make the temperature sensitive body spring and the bias spring thin and small, has a quick response, is compact, and can be operated with a small driving force.

【００１８】また組立時に弾性シール部材を損傷するこ
となく正確にセットでき、組立性がよいとともに、弾性
シール部材の交換等のメンテナンスが容易であるシール
構造または湯水混合装置を提供することを第三の課題と
している。It is another object of the present invention to provide a seal structure or a hot and cold water mixing apparatus which can be accurately set without damaging the elastic seal member at the time of assembly, has good assemblability, and can be easily maintained such as replacement of the elastic seal member. It is an issue.

【００１９】また特に寸法精度を要すことなく弁体と弾
性シール部材との摺動性およびシール性に優れ、コンパ
クトなシール構造または湯水混合装置を提供することを
第四の課題としている。A fourth object is to provide a compact seal structure or a hot and cold water mixing device which is excellent in sliding property and sealing property between the valve element and the elastic seal member without requiring dimensional accuracy.

【００２０】またしめしろの寸法精度が向上するととも
に、高圧下でも弁体と弾性シール部材との摺動性および
シール性に優れ、コンパクトなシール構造または湯水混
合装置を提供することを第五の課題としている。A fifth object of the present invention is to provide a compact seal structure or a hot and cold water mixing device which has improved dimensional accuracy of interference and excellent slidability and sealability between a valve element and an elastic seal member even under high pressure. It is an issue.

【００２１】[0021]

【課題を解決するための手段】本発明は前記する課題を
解決するために、摺動ガイド面の一部に設けられ弾性シ
ール部材を保持する保持溝と、軸部材の外周面に設けら
れ弾性シール部材に対して摺動する摺動溝と、保持溝に
保持される保持部および記弁体の径方向のしめしろの増
加による軸線方向への摺動摩擦力増加を抑制する弾性摺
動部からなる弾性シール部材を設けて構成したものであ
る。従って、摺動溝により軸部材の摺動径が小さくなり
摺動摩擦力の絶対値を低減できるとともに、弾性摺動部
によりしめしろ増加による軸線方向への摺動摩擦力増加
が抑制される作用を奏するものである。In order to solve the above-mentioned problems, the present invention provides a holding groove provided in a part of a sliding guide surface for holding an elastic seal member and an elastic groove provided in an outer peripheral surface of a shaft member. From the sliding groove that slides with respect to the seal member, and the elastic sliding portion that suppresses an increase in sliding frictional force in the axial direction due to an increase in the radial interference of the holding portion and the valve body held in the holding groove. The elastic seal member is provided. Therefore, the sliding diameter of the shaft member is reduced by the sliding groove, the absolute value of the sliding frictional force can be reduced, and the elastic sliding portion has the effect of suppressing the increase in the sliding frictional force in the axial direction due to the increased interference. It is a thing.

【００２２】[0022]

【発明の実施の形態】上記課題を解決するために、請求
項１記載の発明のシール構造は、第一の流体流入口と第
二の流体流入口を軸線方向に間隔をおいて周壁に開けた
ハウジングと、第一の流体流入口と第二の流体流入口と
の間のハウジングの内壁を摺動ガイド面として軸線方向
に移動する軸部材と、摺動ガイド面の一部に設けられ弾
性シール部材を保持する保持溝と、軸部材の外周面に設
けられ弾性シール部材に対して摺動する摺動溝を有し、
弾性シール部材を保持溝に保持される保持部と、軸部材
の径方向のしめしろの増加による軸線方向への摺動摩擦
力増加を抑制する弾性摺動部から構成したものである。In order to solve the above problems, in the seal structure of the invention according to claim 1, the first fluid inflow port and the second fluid inflow port are opened in the peripheral wall with a space in the axial direction. A housing, a shaft member that moves in the axial direction with the inner wall of the housing between the first fluid inlet and the second fluid inlet as a sliding guide surface, and an elastic member provided on a part of the sliding guide surface. A holding groove for holding the seal member, and a sliding groove provided on the outer peripheral surface of the shaft member for sliding with respect to the elastic seal member,
The elastic seal member includes a holding portion held in the holding groove, and an elastic sliding portion that suppresses an increase in sliding frictional force in the axial direction due to an increase in radial interference of the shaft member.

【００２３】そして、上記発明により、摺動溝により軸
部材の摺動径が小さくなり摺動摩擦力の絶対値を低減で
きるとともに、弾性摺動部によりしめしろ増加による軸
線方向への摺動摩擦力増加が抑制されるように作用する
ので、十分なしめしろを確保でき確実にシールが行える
とともに、摺動性が維持できる。Further, according to the above invention, the sliding diameter of the shaft member is reduced by the sliding groove, the absolute value of the sliding frictional force can be reduced, and the sliding frictional force in the axial direction is increased by increasing the interference by the elastic sliding portion. Since it acts so as to suppress the interference, it is possible to secure a sufficient interference and ensure sealing, and it is possible to maintain slidability.

【００２４】また、請求項２記載の発明の湯水混合装置
は、水を流入する第一の流体流入口と湯を流入する第二
の流体流入口とを軸線方向に間隔をおいて周壁に開けた
ハウジングと、水流入口と湯流入口との間のハウジング
の内壁を摺動ガイド面として軸線方向に移動可能に組み
込んだ湯と水の混合比を調節する略円筒状の弁体と、水
流入口側で弁体の軸線方向の一端面に対向する水弁座
と、湯流入口側で弁体の軸線方向の他端面に対向する湯
弁座と、水弁座の下流側に設けた混合水流出口と、混合
水の温度上昇に伴い湯の割合を減少させる方向に弁体を
付勢する感温体ばねと、弁体を感温体ばねとは反対方向
に付勢するバイアスばねと、二つのばねの少なくとも一
方の付勢力を可変し混合温度を調節する付勢力調節手段
と、摺動ガイド面の一部に設けられ弾性シール部材を保
持する保持溝と、略円筒状の弁体の外周面に設けられ弾
性シール部材に対して摺動する摺動溝を有し、弾性シー
ル部材を保持溝に保持される保持部と、弁体の径方向の
しめしろの増加による軸線方向への摺動摩擦力増加を抑
制する弾性摺動部から構成したものである。Further, in the hot and cold water mixing apparatus according to the second aspect of the present invention, the first fluid inflow port for inflowing the water and the second fluid inflow port for inflowing the hot water are opened in the peripheral wall with a gap in the axial direction. A housing, a substantially cylindrical valve body for adjusting the mixing ratio of hot water and water, which is movably incorporated in the axial direction with the inner wall of the housing between the water inlet and the hot water inlet as a sliding guide surface, and the water inlet Side, the water valve seat facing one end face in the axial direction of the valve body, the hot water valve seat facing the other end face in the axial direction of the valve body on the hot water inlet side, and the mixed water flow provided downstream of the water valve seat. An outlet, a temperature sensor spring for urging the valve body in a direction to reduce the proportion of hot water as the temperature of the mixed water rises, and a bias spring for urging the valve body in a direction opposite to the temperature sensor spring. Of at least one of the two springs to adjust the mixing temperature by varying the biasing force, and the sliding guide surface. Holding groove for holding the elastic seal member, and a sliding groove for sliding the elastic seal member on the outer peripheral surface of the substantially cylindrical valve body. The elastic seal member is held in the holding groove. And a resilient sliding portion that suppresses an increase in sliding frictional force in the axial direction due to an increase in the interference in the radial direction of the valve element.

【００２５】そして、上記発明において、感温体ばねと
バイアスばねの付勢力とがバランスする位置に略円筒状
の弁体が軸線方向に摺動移動して、付勢力調節手段で設
定した混合水温度になるとき、略円筒状の弁体の外周面
に設けられた弾性シール部材は、ハウジングの内壁の保
持溝に保持されており、弁体の外周面の摺動溝が弾性シ
ール部材の弾性摺動部に対して滑りながら相対移動す
る。ここで、弾性シール部材と摺動する弁体の摺動溝は
弁体の外径より細いので、それだけ摺動接触面が細く小
さくなり、この弾性シール部材との摺動摩擦力を低減で
きるとともに、弾性シール部材の弾性摺動部がしめしろ
の増加により軸線方向の摺動摩擦力の増加を抑制するよ
うに作用する。したがって、感温体ばねおよびバイアス
ばね共に小さい付勢力で弁体を駆動させることができ
る。このことから、感温体ばねおよびバイアスばねは細
く小さいばねで、熱容量が小さく温度変化に対して熱応
答速度が速く作動するように作用するとともに、湯水混
合装置を小型コンパクトにできるものである。In the above invention, the substantially cylindrical valve element slides in the axial direction at a position where the biasing force of the temperature sensitive body spring and the biasing force of the bias spring are balanced, and the mixed water set by the biasing force adjusting means. When the temperature rises, the elastic seal member provided on the outer peripheral surface of the substantially cylindrical valve body is held in the holding groove on the inner wall of the housing, and the sliding groove on the outer peripheral surface of the valve body is elastic. It moves relative to the sliding part while sliding. Here, since the sliding groove of the valve body that slides with the elastic seal member is smaller than the outer diameter of the valve body, the sliding contact surface becomes thinner and smaller, and the sliding frictional force with the elastic seal member can be reduced. The elastic sliding portion of the elastic seal member acts so as to suppress an increase in sliding frictional force in the axial direction due to an increase in interference. Therefore, the valve body can be driven with a small biasing force for both the temperature sensing body spring and the bias spring. For this reason, the temperature-sensitive body spring and the bias spring are thin and small springs, which have a small heat capacity and act so as to have a fast thermal response speed with respect to temperature changes, and can also make the hot and cold water mixing device small and compact.

【００２６】また、請求項３に記載の発明のシール構造
は、ハウジングを第一の流体流入を有する第一の流体部
材と第二の流体流入口を有する第二の流体部材に分割可
能とし、第一の流体部材と第二の流体部材とから保持溝
を構成したものである。Further, in the seal structure of the invention described in claim 3, the housing can be divided into a first fluid member having a first fluid inflow and a second fluid member having a second fluid inflow port, A holding groove is formed by the first fluid member and the second fluid member.

【００２７】そして、上記発明においては、弁体および
弾性シール部材組立時に、まず弁体に弾性シール部材を
はめ込み、その後第一の流体部材または第二の流体部材
のいずれか一方に弁体をセットし、第一の流体部材と第
二の流体部材を勘合することによってハウジングを形成
するので、弾性シール部材を圧入して組立を行う必要が
なく、弾性シール部材を損傷することなく確実にセット
できる。また、長期間使用し、弾性シール部材が劣化し
た場合などのメンテナンスも、ハウジングを分割するこ
とによって簡単に弾性シール材を交換できる。In the above invention, when the valve body and the elastic seal member are assembled, the elastic seal member is first fitted into the valve body, and then the valve body is set on either the first fluid member or the second fluid member. Since the housing is formed by fitting the first fluid member and the second fluid member, it is not necessary to press-fit the elastic seal member for assembly, and the elastic seal member can be reliably set without damage. . Also, for maintenance such as when the elastic seal member is deteriorated after being used for a long time, the elastic seal material can be easily replaced by dividing the housing.

【００２８】また、請求項４に記載の発明のシール構造
は、弾性シール部材を断面外周部が略円形となるシール
層とシール層内部に多数の中空部を有するＯリングで構
成したものである。Further, in the seal structure of the invention described in claim 4, the elastic seal member is constituted by a seal layer having a substantially circular cross-section outer peripheral portion and an O-ring having a large number of hollow portions inside the seal layer. .

【００２９】そして、上記発明においては、Ｏリング
は、Ｏリングの内径，線径または弁体の摺動溝径または
ハウジングの摺動ガイド面の径に寸法ばらつきが生じ、
圧縮のしめしろが増加しても、内部が中空状であるため
弁体またはハウジングへの押しつけ力の増加が通常のＯ
リングよりも抑制されるので、弁体の軸線方向への摺動
摩擦力を増加しないよう作用する。また、外周部のシー
ル層は略円形となっているので通常のＯリングと同様に
確実なシールが可能である。In the above invention, the O-ring has dimensional variations in the inner diameter, wire diameter, sliding groove diameter of the valve body or sliding guide surface diameter of the housing.
Even if the compression interference increases, the pressing force against the valve body or the housing increases normally due to the hollow interior.
Since it is suppressed more than the ring, it acts so as not to increase the sliding frictional force in the axial direction of the valve body. Further, since the seal layer on the outer peripheral portion has a substantially circular shape, it is possible to perform a reliable seal like a normal O-ring.

【００３０】また、請求項５に記載の発明のシール構造
は、弾性シール部材をＸリングで構成したものである。In the seal structure of the invention described in claim 5, the elastic seal member is composed of an X ring.

【００３１】そして、上記発明においては、Ｘリングの
外周側の二片を保持部とし、内周側の二片を弾性摺動部
としているので、Ｘリングの内径，線径または弁体の摺
動溝径またはハウジングの摺動ガイド面の径に寸法ばら
つきが生じ、径方向へのしめしろが増加しても保持部お
よび弾性摺動部の両側で曲げ弾性によってしめしろの増
加を吸収している。圧縮弾性ではなく曲げ弾性のしめし
ろ増加であるとともに、保持部および弾性摺動部の両側
でしめしろを吸収しているので、しめしろ増加による弁
体への押しつけ力が抑制され、弁体の軸線方向への摺動
摩擦力を増加しないよう作用する。また、保持溝側およ
び摺動溝側ともにそれぞれ二片でシールを行うので確実
なシールが可能である。Further, in the above invention, since the two pieces on the outer peripheral side of the X ring are used as the holding portions and the two pieces on the inner peripheral side are used as the elastic sliding portions, the inner diameter, the wire diameter of the X ring or the sliding of the valve body is set. Even if there is dimensional variation in the diameter of the moving groove or the diameter of the sliding guide surface of the housing, and the interference in the radial direction increases, the increase in interference is absorbed by the bending elasticity on both sides of the holding part and the elastic sliding part. There is. As the interference of bending elasticity is increased instead of compression elasticity and the interference is absorbed on both sides of the holding part and the elastic sliding part, the pressing force against the valve body due to the increased interference is suppressed, It acts so as not to increase the sliding frictional force in the axial direction. Further, since sealing is performed with two pieces on each of the holding groove side and the sliding groove side, reliable sealing is possible.

【００３２】また、請求項６に記載の発明のシール構造
は、弾性シール部材の断面形状を略Ｙ字形状とし、弾性
シール部材の外周側の一片を保持部とし、弾性シール部
材の内周側の二片を軸部材または弁体に接する弾性摺動
部として構成したものである。According to a sixth aspect of the seal structure of the present invention, the elastic seal member has a substantially Y-shaped cross section, and one piece on the outer peripheral side of the elastic seal member serves as a holding portion, and the inner peripheral side of the elastic seal member. The above two pieces are configured as elastic sliding portions that are in contact with the shaft member or the valve body.

【００３３】そして、上記発明においては、弾性シール
部材の内径，線径または弁体の摺動溝径またはハウジン
グの摺動ガイド面の径に寸法ばらつきが生じ、径方向へ
のしめしろが増加しても、圧縮弾性ではなく曲げ弾性で
しめしろの増加を吸収しており、弾性摺動部による弁体
への押しつけ力を抑制され、弁体の軸線方向への摺動摩
擦力を増加しないよう作用する。また、スケールやゴミ
等が弁体摺動時に弁体と弾性摺動部の間に咬み込んで
も、弾性摺動部がスケールやゴミの形状に応じて変形
し、シール性を維持するとともに、前述したように弁体
または軸部の軸線方向への摺動摩擦力を増加しないよう
作用する。In the above invention, the inner diameter, the wire diameter of the elastic seal member, the sliding groove diameter of the valve element, or the diameter of the sliding guide surface of the housing varies, which increases the interference in the radial direction. Even if the interference is increased by bending elasticity instead of compression elasticity, the pressing force of the elastic sliding part against the valve body is suppressed and the sliding frictional force in the axial direction of the valve body does not increase. To do. In addition, even if scale or dust gets caught between the valve body and the elastic sliding portion during sliding of the valve body, the elastic sliding portion deforms according to the shape of the scale or dust, and maintains the sealing property. As described above, it acts so as not to increase the sliding frictional force of the valve body or the shaft portion in the axial direction.

【００３４】また、請求項７に記載の発明のシール構造
は、弾性シール部材の保持部から軸線方向に突出した固
定部と、固定部を保持し保持部の径方向へのずれを防止
する径方向保持溝を備えているものである。According to a seventh aspect of the seal structure of the present invention, there is provided a fixing portion projecting from the holding portion of the elastic seal member in the axial direction, and a diameter for holding the fixing portion and preventing the holding portion from being displaced in the radial direction. It is provided with a direction holding groove.

【００３５】そして、上記発明においては、固定部は径
方向保持溝に保持されるので、弾性シール材が組立時や
外周側から高圧がかかる場合においても、弾性シール部
材の径方向へのずれを防止している。従って、弾性摺動
部が位置決めされるので、しめしろのばらつきを低減す
るように作用する。また、第一の流体または第二の流体
の圧力が高圧であり、第一の流体部材と第二の流体部材
と勘合部を通じて弾性シール部材外周側に高圧がかかっ
ても固定部が径方向保持溝に押しつけられるので、外周
部にかかる圧力が高いほど第一および第二の流体間のシ
ール性が向上するようになっている。Further, in the above invention, since the fixing portion is held in the radial holding groove, even when the elastic seal member is assembled or a high pressure is applied from the outer peripheral side, the elastic seal member is displaced in the radial direction. To prevent. Therefore, since the elastic sliding portion is positioned, it acts to reduce the variation in interference. Further, even if the pressure of the first fluid or the second fluid is high and the high pressure is applied to the outer peripheral side of the elastic seal member through the fitting portion between the first fluid member and the second fluid member, the fixed portion is held in the radial direction. Since it is pressed against the groove, the higher the pressure applied to the outer peripheral portion, the better the sealing performance between the first and second fluids.

【００３６】以下、本発明の第１の実施例を図１を参照
しながら説明する。図１は本発明の第１の実施例の湯水
混合装置の断面図である。The first embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a sectional view of a hot and cold water mixing apparatus according to a first embodiment of the present invention.

【００３７】図において、ハウジング１１の周壁には軸
線方向に間隔をおいて水を流入する第一の流体流入口で
ある水流入口１２および湯を流入する第二の流体流入口
である湯流入口１３をそれぞれ開けると共に、これらの
流入口１２、１３に連通する下流側には混合水流出口１
４が開けてある。水流入口１２は湯水混合装置の本体の
中の水室１５に連通し、同様に湯流入口１３と混合水流
出口１４はそれぞれ湯室１６および混合室１７に連通
し、この混合室１７を経由して混合水が混合水流出口１
４に至る。In the figure, a water inlet 12 which is a first fluid inlet for inflowing water and a hot water inlet which is a second fluid inlet for inflowing water are provided on the peripheral wall of the housing 11 at intervals in the axial direction. 13 is opened, and the mixed water outlet 1 is provided on the downstream side communicating with the inlets 12 and 13.
4 is open. The water inlet 12 communicates with a water chamber 15 in the body of the hot water mixing device, and similarly, the hot water inlet 13 and the mixed water outlet 14 communicate with a hot water chamber 16 and a mixing chamber 17, respectively, via this mixing chamber 17. Mixed water is mixed water outlet 1
Reaches 4.

【００３８】ハウジング１１の内部には、水流入口１２
側および湯流入口１３側にそれぞれ水弁座１８および湯
弁座１９が設けてある。そしてこれら水弁座１８と湯弁
座１９との間には、軸線方向に移動可能で湯と水の混合
比を調節する略円筒状の軸部材である弁体２０が組み込
まれている。Inside the housing 11, a water inlet 12
Side and hot water inlet 13 side are provided with a water valve seat 18 and a hot water valve seat 19, respectively. A valve body 20 that is a substantially cylindrical shaft member that is movable in the axial direction and that adjusts the mixing ratio of hot water and water is incorporated between the water valve seat 18 and the hot water valve seat 19.

【００３９】また、混合水の温度上昇に伴い湯の割合を
減少させる方向に弁体２０を付勢する感温体ばね２１
と、その弁体２０を感温体ばね２１とは反対方向に付勢
するバイアスばね２２との力の釣り合いにより、弁体２
０が移動位置決めされる構成で、これら二つのばね２
１、２２の少なくとも一方の付勢力を可変し混合温度を
調節する付勢力調節手段２３は、図１の実施例ではバイ
アスばね２２の方を調節する構成である。つまり、ハン
ドル２４を回転すると送りネジ２５が回転し、可動ばね
受け２６が軸方向に進退する構成で、バイアスばね２２
の付勢力が調節される。Further, the temperature-sensing body spring 21 for urging the valve body 20 in the direction of decreasing the proportion of hot water as the temperature of the mixed water rises.
And the force of the bias spring 22 that biases the valve body 20 in the direction opposite to that of the temperature sensing body spring 21, the valve body 2
0 is moved and positioned, these two springs 2
The biasing force adjusting means 23 for adjusting the mixing temperature by varying the biasing force of at least one of the first and the second is configured to adjust the bias spring 22 in the embodiment of FIG. That is, when the handle 24 is rotated, the feed screw 25 is rotated, and the movable spring receiver 26 is moved forward and backward in the axial direction.
The urging force of is adjusted.

【００４０】また、ハウジング１１の内壁で弁体２０の
外側をガイドする摺動ガイド面２７の一部に設けられた
保持溝２８は、弾性シール部材であるＯリング２９の外
周が嵌まる凹溝で、この保持溝２８によって、弁体２０
が軸方向に動作してもＯリング２９は定位置のまま保持
される。Further, the holding groove 28 provided in a part of the sliding guide surface 27 for guiding the outside of the valve body 20 by the inner wall of the housing 11 is a concave groove into which the outer circumference of an O-ring 29 which is an elastic seal member fits. With this holding groove 28, the valve body 20
The O-ring 29 is held in a fixed position even when the shaft moves in the axial direction.

【００４１】また、略円筒状の弁体２０の外周面に設け
られた摺動溝３０は、弾性シール部材２９の内径とほぼ
同じ外径で、Ｏリング２９の幅に弁体２０の軸方向の最
大移動幅を加えた幅を有する構成である。なお感温体ば
ね２１は、形状記憶合金ばねやバイメタルばね等が使用
でき、特に形状記憶合金ばねは、温度変化に対する発生
力の点で好ましい。Further, the sliding groove 30 provided on the outer peripheral surface of the substantially cylindrical valve body 20 has an outer diameter substantially the same as the inner diameter of the elastic seal member 29 and the width of the O-ring 29 in the axial direction of the valve body 20. Is a configuration having a width obtained by adding the maximum movement width of. As the temperature sensitive body spring 21, a shape memory alloy spring, a bimetal spring, or the like can be used, and the shape memory alloy spring is particularly preferable in terms of the force generated with respect to temperature change.

【００４２】Ｏリング２９には、図１の部分拡大断面図
である図２に示すように、断面外周側にはＯリング２９
の形状が通常のＯリングと同様となるようにシール層２
９ａが形成されており、その内部には多数の中空部２９
ｂが設けてある。ここで、Ｏリング２９は、湯水間の漏
れがないように保持溝２８と摺動溝３０により径方向の
しめしろを有している。Ｏリング２９のおいて保持部２
９ｃは保持溝２８に保持されているシール層２９ａ上側
であり、弾性摺動部２９ｄはシール層２９ａ下側および
中空部２９ｂから構成されている。なお図１には示して
いないが図２において３１および３２は、ばね受けリン
グである。As shown in FIG. 2, which is a partially enlarged sectional view of FIG. 1, the O-ring 29 has an O-ring 29 on the outer peripheral side of the section.
The sealing layer 2 so that its shape is similar to that of a normal O-ring.
9a is formed in which a large number of hollow portions 29 are formed.
b is provided. Here, the O-ring 29 has a radial interference by the holding groove 28 and the sliding groove 30 so that there is no leakage between hot water and water. Holding part 2 for O-ring 29
9c is the upper side of the seal layer 29a held in the holding groove 28, and the elastic sliding portion 29d is composed of the lower side of the seal layer 29a and the hollow portion 29b. Although not shown in FIG. 1, 31 and 32 in FIG. 2 are spring receiving rings.

【００４３】上記構成において動作を説明すると、水流
入口１２と湯流入口１３とからそれぞれ水と湯が供給さ
れ、弁体２０と水弁座１８との隙間および弁体２０と湯
弁座１９との隙間に応じて、混合室３１に混合されなが
ら流入する。その混合室１７に設けられた感温体ばね２
１は温度に応じて付勢力が変化し、感温体ばね２１とバ
イアスばね２２の付勢力とがバランスする位置に略円筒
状の弁体２０が軸線方向に摺動移動して、付勢力調節手
段２３で設定した混合水温度になる。このとき、略円筒
状の弁体２０の外周面に設けられたＯリング２９は、ハ
ウジング１１の内壁の保持溝２８に保持されており、弁
体２０の外周面の摺動溝３０が弾性シール部材２９に対
して滑りながら相対移動する。ここで、弁体２０の外径
部はハウジング１１の内壁である摺動ガイド面２７に軽
く接触する程度に摺動し、この摺動摩擦力は小さく、ま
たＯリング２９と摺動する弁体２０の摺動溝３０は弁体
２０の外径より細いので、それだけ摺動接触面が細く小
さくなり、このＯリング２９との摺動摩擦力も小さい。
したがって、感温体ばね２１およびバイアスばね２２共
に小さい付勢力で弁体２０を駆動することができる。こ
のことから、感温体ばね２１およびバイアスばね２２は
細く小さいばねにできるため、熱容量が小さく、それだ
け温度変化に対して敏感に速く作動する。The operation of the above structure will be described. Water and hot water are supplied from the water inlet 12 and the hot water inlet 13, respectively, and a gap between the valve body 20 and the water valve seat 18 and the valve body 20 and the hot water valve seat 19 are provided. According to the gap of, the mixture flows into the mixing chamber 31 while being mixed. Temperature sensitive spring 2 provided in the mixing chamber 17
In No. 1, the urging force changes according to the temperature, and the substantially cylindrical valve body 20 slides in the axial direction at a position where the urging forces of the temperature sensing body spring 21 and the bias spring 22 are balanced to adjust the urging force. The mixed water temperature set by the means 23 is reached. At this time, the O-ring 29 provided on the outer peripheral surface of the substantially cylindrical valve body 20 is held by the holding groove 28 on the inner wall of the housing 11, and the sliding groove 30 on the outer peripheral surface of the valve body 20 is elastically sealed. It moves relative to the member 29 while sliding. Here, the outer diameter portion of the valve body 20 slides to such an extent that the sliding guide surface 27, which is the inner wall of the housing 11, is lightly contacted, the sliding frictional force is small, and the valve body 20 that slides with the O-ring 29. Since the sliding groove 30 is thinner than the outer diameter of the valve body 20, the sliding contact surface becomes thinner and smaller, and the sliding frictional force with the O-ring 29 is also smaller.
Therefore, both the temperature sensing body spring 21 and the bias spring 22 can drive the valve body 20 with a small biasing force. For this reason, the temperature-sensitive body spring 21 and the bias spring 22 can be thin and small springs, so that the heat capacity is small, and accordingly, the thermosensitive spring operates sensitively and quickly with respect to temperature changes.

【００４４】また、Ｏリング２９には内部に多数の中空
部２９ｂが設けられているため、Ｏリング２９の線径お
よび内径，摺動ガイド面の径，摺動溝３０の径などに寸
法ばらつきが生じ、Ｏリングのしめしろが増加しても、
その圧縮歪みの増加に伴う反力の増加を抑制するように
なっている。すなわち、Ｏリング２９のしめしろが増加
してもＯリング２９の摺動溝３０への押しつけ力が通常
のＯリングよりも大幅に抑制されるので、弁体２０の摺
動摩擦力が抑制される。さらに、Ｏリング２９の外周に
はシール層２９ａが通常のＯリングと同様に略円形とな
るように設けてあり、中空部２９ｂがＯリング２９の表
面に開口しないので、湯水間のシールを確実に行える。Since the O-ring 29 is provided with a large number of hollow portions 29b inside, the dimensional variation in the wire diameter and inner diameter of the O-ring 29, the diameter of the sliding guide surface, the diameter of the sliding groove 30, etc. Occurs and the interference of the O-ring increases,
The increase of the reaction force due to the increase of the compression strain is suppressed. That is, even if the interference of the O-ring 29 is increased, the pressing force of the O-ring 29 against the sliding groove 30 is significantly suppressed as compared with the normal O-ring, so that the sliding frictional force of the valve body 20 is suppressed. . Further, a seal layer 29a is provided on the outer periphery of the O-ring 29 so as to have a substantially circular shape like a normal O-ring, and since the hollow portion 29b does not open on the surface of the O-ring 29, a seal between hot and cold water is surely made. You can do it.

【００４５】また、ハウジング１１に保持溝２８を形成
し、弁体２０に摺動溝３０を形成した構成により、シー
ル性を確保しながら摺動摩擦力を小さくできる効果のほ
かに、湯または水の供給圧力の変動に対して、弁体２０
の開度を自動補正でき、混合温度性能を安定できるとい
う特有の効果がある。たとえば、他栓の開閉などによっ
て水流入口１２の供給水圧が変動した場合、水弁座１８
と弁体２０との開度がそのままであれば水圧に応じて混
合室３１に流入する水量が変動し、湯と水の混合比が変
動して混合水温度も変動することになる。ところが、供
給水圧が上昇すると、弁体２０の摺動溝３０内の水圧も
上昇し、弾性シール部材２９はハウジング１１に固定さ
れた状態なので、摺動溝３０内の水圧は弁体２０を水弁
座１８側に付勢するように作用する。弁体２０と水弁座
１８間の流速は速く摺動溝３０内の流速が遅いことか
ら、ベルヌーイの定理からしても弁体２０と水弁座１８
間の圧力の方が摺動溝３０内の圧力より低い。したがっ
て供給水圧が上昇すれば、弁体２０を水弁座１８側に付
勢する力が増大し、供給水圧が低下した場合には、弁体
２０を水弁座１８側に付勢する力が減少する。これは湯
側においも同様に作用する。すなわち湯側、水側とも供
給圧変動に対して、その影響を打ち消すように弁体２０
の開度が自動的に補正される。Further, the holding groove 28 is formed in the housing 11 and the sliding groove 30 is formed in the valve body 20. In addition to the effect that the sliding frictional force can be reduced while ensuring the sealing property, hot water or water is used. The valve body 20 against fluctuations in the supply pressure
There is a unique effect that the opening degree of can be automatically corrected and the mixing temperature performance can be stabilized. For example, when the supply water pressure at the water inlet 12 fluctuates due to the opening / closing of another plug, the water valve seat 18
If the opening degree of the valve body 20 remains the same, the amount of water flowing into the mixing chamber 31 changes according to the water pressure, the mixing ratio of hot water and water changes, and the mixed water temperature also changes. However, when the supply water pressure rises, the water pressure in the sliding groove 30 of the valve body 20 also rises, and the elastic seal member 29 is fixed to the housing 11, so that the water pressure in the sliding groove 30 causes the water pressure in the valve body 20. It acts so as to urge the valve seat 18 side. Since the flow velocity between the valve body 20 and the water valve seat 18 is fast and the flow velocity in the sliding groove 30 is slow, the valve body 20 and the water valve seat 18 are also found from Bernoulli's theorem.
The pressure between them is lower than the pressure in the sliding groove 30. Therefore, if the supply water pressure rises, the force that urges the valve body 20 toward the water valve seat 18 increases, and if the supply water pressure decreases, the force that urges the valve body 20 toward the water valve seat 18 side increases. Decrease. This also works on the hot side. That is, the valve body 20 is arranged so as to cancel out the influence of the supply pressure fluctuation on both the hot water side and the hot water side.
The opening of is automatically corrected.

【００４６】つまり、混合水の温度が変動してその温度
が感温体ばね２１に伝達されて、感温体ばね２１の付勢
力変化によって弁体２０を移動して設定温度に保つ本来
の作用は、温度変動してからの修正動作であるのに対
し、温度変動が発生する事前に、供給圧の変動圧力によ
って弁体２０を移動補正するので、温度変動を事前に抑
制防止でき、安定した温度性能が得られる。That is, the temperature of the mixed water fluctuates and the temperature is transmitted to the temperature sensitive body spring 21, and the original action of moving the valve body 20 by the change of the urging force of the temperature sensitive body spring 21 and keeping it at the set temperature. Is the correction operation after the temperature change, but the valve body 20 is moved and corrected by the change pressure of the supply pressure before the temperature change occurs, so that the temperature change can be prevented and prevented in advance and stabilized. Temperature performance is obtained.

【００４７】なお、ばね受けリング３１および３２は、
感温体ばね２１およびバイアスばね２２の不要なねじり
やこじりを防止しており、弁体３２がさらに安定して作
動でき優れた温度調節機能を確保するものである。The spring receiving rings 31 and 32 are
Unnecessary twisting and twisting of the temperature-sensitive body spring 21 and the bias spring 22 are prevented, and the valve body 32 can operate more stably, ensuring an excellent temperature control function.

【００４８】本発明の第１の実施例によれば、ハウジン
グ１１の摺動ガイド面２７の一部に弾性シール部材２９
を保持する保持溝２８と、弁体２０の外周面に摺動溝３
０を設けた構成により、弁体２０の摺動摩擦抵抗を小さ
くでき、細く小さい感温体ばね２１にできるようになる
ため、熱応答性に優れ、供給される湯温変動や圧力変動
に対し敏感に速く作動することと、供給圧変動によっ
て、弁体２０の開度が自動補正されることにより安定し
た混合温度を得ることができるという効果がある。According to the first embodiment of the present invention, the elastic seal member 29 is provided on a part of the sliding guide surface 27 of the housing 11.
And a holding groove 28 for holding the sliding groove 3 on the outer peripheral surface of the valve body 20.
With the configuration in which 0 is provided, the sliding friction resistance of the valve body 20 can be reduced, and the temperature sensing body spring 21 can be made thin and small. Therefore, the thermal responsiveness is excellent and it is sensitive to fluctuations in the supplied hot water temperature and pressures. There is an effect that a stable mixing temperature can be obtained by operating at extremely high speed and automatically adjusting the opening degree of the valve body 20 due to the fluctuation of the supply pressure.

【００４９】また、Ｏリング２９にその断面外周部が略
円形となるシール層２９ａとシール層２９ａ内部に多数
の中空部２９ｂを設けた構成により、Ｏリングのしめし
ろが増加しても、弁体２０の摺動摩擦力増加を抑制でき
るので、前述した効果を維持しつつ、Ｏリング２９の線
径および内径，摺動ガイド面の径，摺動溝３０の径など
の許容寸法が範囲が拡げることができる。従って、寸法
精度を要しないので量産性が向上し、低コスト化が可能
となる。Further, the O-ring 29 is provided with a seal layer 29a having a substantially circular cross section and a large number of hollow portions 29b inside the seal layer 29a. Since the increase of the sliding frictional force of the body 20 can be suppressed, the allowable dimensions such as the wire diameter and inner diameter of the O-ring 29, the diameter of the sliding guide surface, the diameter of the sliding groove 30 can be expanded while maintaining the above-mentioned effects. be able to. Therefore, dimensional accuracy is not required, mass productivity is improved, and cost can be reduced.

【００５０】さらに、二つのばね２１、２２の力を小さ
くできることから、付勢力調節手段２３のハンドル２４
の回転操作も軽く操作性がよく、小型コンパクトな湯水
混合装置が得られる。Further, since the force of the two springs 21 and 22 can be reduced, the handle 24 of the biasing force adjusting means 23 is provided.
The rotating operation is light and easy to operate, and a compact and compact hot and cold water mixing device can be obtained.

【００５１】なお図１の実施例では、付勢力調節手段２
３に手動のハンドル２４を用いた場合を説明したが、こ
のような手動に限らずモータ等の電気的駆動手段による
場合も同様の効果を得ることができる。In the embodiment shown in FIG. 1, the biasing force adjusting means 2
Although the case where the manual handle 24 is used for 3 has been described, the same effect can be obtained not only by such a manual operation but also by an electric driving means such as a motor.

【００５２】次に本発明の第２の実施例を図３を用いて
説明する。図３は本発明の第２の実施例の湯水混合装置
の要部断面の構成図である。Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a sectional view of a main part of a hot and cold water mixing apparatus according to a second embodiment of the present invention.

【００５３】図３において、３３はハウジングであり、
ハウジング３３はねじにより勘合され着脱可能な第一の
流体流入口を有する第一の流体部材３４と第二の流体流
入口を有する第二の流体部材３５から構成されている。
ハウジング３３の周壁には軸線方向に間隔をおいて水流
入口３６および湯流入口３７をそれぞれ開けると共に、
これらの流入口３６、３７に連通する下流側には混合水
流出口３８が設けてある。水流入口３６は湯水混合装置
の本体の中の水室３９に連通し、同様に湯流入口３７と
混合水流出口３８はそれぞれ湯室４０および混合室４１
に連通し、この混合室４１を経由して混合水が混合水流
出口３８に至る。その混合室４１から混合水流出口３８
に至る流路の途中に、混合水の温度を検出する温度検出
手段４２が設けられている。In FIG. 3, 33 is a housing,
The housing 33 is composed of a first fluid member 34 having a first fluid inlet port which is fitted with a screw and is removable, and a second fluid member 35 having a second fluid inlet port.
A water inflow port 36 and a hot water inflow port 37 are opened on the peripheral wall of the housing 33 at intervals in the axial direction, and
A mixed water outlet 38 is provided on the downstream side communicating with the inlets 36 and 37. The water inlet 36 communicates with a water chamber 39 in the body of the hot water mixing device, and similarly, the hot water inlet 37 and the mixed water outlet 38 are respectively a hot water chamber 40 and a mixing chamber 41.
And the mixed water reaches the mixed water outlet 38 via the mixing chamber 41. From the mixing chamber 41 to the mixed water outlet 38
Temperature detecting means 42 for detecting the temperature of the mixed water is provided in the middle of the flow path leading to.

【００５４】ハウジング３３の内部には、水流入口３６
側および湯流入口３７側にそれぞれ水弁座４３および湯
弁座４４が設けてある。そしてこれら水弁座４３と湯弁
座４４との間には、軸線方向に移動可能で湯と水の混合
比を調節する略円筒状の弁体４５が組み込まれている。A water inlet 36 is provided inside the housing 33.
Side and hot water inlet 37 side are provided with a water valve seat 43 and a hot water valve seat 44, respectively. Between the water valve seat 43 and the hot water valve seat 44, a substantially cylindrical valve body 45 that is movable in the axial direction and adjusts the mixing ratio of hot water and water is incorporated.

【００５５】また、混合水の温度上昇に伴い湯の割合を
減少させる方向に弁体４５を付勢する感温体ばね４６
と、その弁体４５を感温体ばね４６とは反対方向に付勢
するバイアスばね４７との力の釣り合いにより、弁体４
５が移動位置決めされる構成で、これら二つのばね４
６、４７の少なくとも一方の付勢力を可変し混合温度を
調節する付勢力調節手段である電気的付勢力調節手段４
８は、図３の実施例ではバイアスばね４７の方を調節す
る構成である。つまり、電気的付勢力調節手段４８であ
るモータ４９の出力軸５０を回転するとネジ軸５１が回
転し、可動ばね受け５２が軸方向に進退する構成で、バ
イアスばね４７の付勢力が調節される。Further, the temperature sensor spring 46 for urging the valve element 45 in the direction of decreasing the proportion of hot water as the temperature of the mixed water rises.
And the force of the bias spring 47 that biases the valve body 45 in the opposite direction to the temperature sensing body spring 46, the valve body 4
These two springs 4
An electric urging force adjusting means 4 which is an urging force adjusting means for changing the urging force of at least one of 6, 6 and 47 to adjust the mixing temperature.
8, the bias spring 47 is adjusted in the embodiment of FIG. That is, when the output shaft 50 of the motor 49 which is the electric biasing force adjusting means 48 is rotated, the screw shaft 51 is rotated and the movable spring receiver 52 is advanced and retracted in the axial direction, and the biasing force of the bias spring 47 is adjusted. .

【００５６】また、ハウジング３３の内壁で弁体４５の
外側をガイドする摺動ガイド面５３および摺動ガイド面
５３の一部に設けられた保持溝５４は、保持溝５４を中
心として水側は第一の流体部材３４により、また湯側は
第二の流体部材３５によって構成されている。すなわ
ち、保持溝５４はその中心から分割可能となっている。
この保持溝５４は弾性シール部材５５の外周側に設けら
れた保持部５６が嵌まる凹溝で、この保持溝５４によっ
て、弁体４５が軸方向に動作しても弾性シール部材５５
は定位置のまま保持される。弾性シール部材５５は、図
３の部分拡大断面図である図４に示すようにその断面形
状が略Ｙ字形状であり、略Ｙ字形状の外周側の一片が保
持溝５４に保持される保持部５６に、また、内周側の他
の二片が弁体４５の摺動溝５７と摺動する弾性摺動部５
８になっている。Further, the sliding guide surface 53 which guides the outside of the valve element 45 by the inner wall of the housing 33 and the holding groove 54 provided in a part of the sliding guide surface 53, the holding groove 54 as the center, The first fluid member 34 and the hot water side are constituted by the second fluid member 35. That is, the holding groove 54 can be divided from its center.
The holding groove 54 is a concave groove into which the holding portion 56 provided on the outer peripheral side of the elastic seal member 55 is fitted, and the holding groove 54 allows the elastic seal member 55 to move even if the valve body 45 moves in the axial direction.
Is held in place. As shown in FIG. 4, which is a partially enlarged cross-sectional view of FIG. 3, the elastic seal member 55 has a substantially Y-shaped cross section, and a piece of the Y-shaped outer peripheral side is held in the holding groove 54. The elastic sliding portion 5 in which the other two pieces on the inner side of the portion 56 slide with the sliding groove 57 of the valve body 45.
It is eight.

【００５７】略円筒状の弁体４５の外周面に設けられた
摺動溝５７は、弾性シール部材５５の弾性摺動部５８の
内径よりも大きい外径で、弾性摺動部５８の幅に弁体４
５の軸方向の最大移動幅を加えた幅を有する構成であ
る。ここで、弾性シール部材５５のしめしろは、保持部
５６の圧縮歪みではなく、弾性摺動部５８の曲げ歪みに
より吸収されている。なお感温体ばね４６は、形状記憶
合金ばねやバイメタルばね等が使用でき、特に形状記憶
合金ばねは、温度変化に対する発生力の点で好ましい。The sliding groove 57 provided on the outer peripheral surface of the substantially cylindrical valve body 45 has an outer diameter larger than the inner diameter of the elastic sliding portion 58 of the elastic seal member 55 and has a width of the elastic sliding portion 58. Disc 4
This is a structure having a width obtained by adding the maximum movement width of 5 in the axial direction. Here, the interference of the elastic seal member 55 is absorbed not by the compressive strain of the holding portion 56 but by the bending strain of the elastic sliding portion 58. As the temperature-sensitive body spring 46, a shape memory alloy spring, a bimetal spring, or the like can be used, and in particular, the shape memory alloy spring is preferable in terms of the force generated with respect to temperature change.

【００５８】さらに、混合水温度の目標値を設定する温
度設定手段５９と、温度検出手段４２で検出された温度
と温度設定手段５９で設定された目標値に基づいて電気
的付勢力調節手段４９を制御する電子制御手段６０とを
備えた構成である。Furthermore, the temperature setting means 59 for setting the target value of the mixed water temperature, and the electric biasing force adjusting means 49 based on the temperature detected by the temperature detecting means 42 and the target value set by the temperature setting means 59. And an electronic control means 60 for controlling the.

【００５９】上記構成において、水流入口３６と湯流入
口３７とからそれぞれ水と湯が供給され、弁体４５と水
弁座４３との隙間および弁体４５と湯弁座４４との隙間
に応じて、混合室４１に混合されながら流入する。その
混合室４１に設けられた感温体ばね４６は温度に応じて
付勢力が変化し、感温体ばね４６とバイアスばね４７の
付勢力とがバランスする位置に略円筒状の弁体４５が軸
線方向に摺動移動して、電気的付勢力調節手段４８によ
って可動ばね受け５２の位置が可変されて決まるバイア
スばね４７の付勢力に応じた混合水温度になる。このと
き、略円筒状の弁体４５の外周面に設けられた弾性シー
ル部材５５の保持部５６はハウジング３３の内壁の保持
溝５４に保持されており、弁体４５の外周面の摺動溝５
７が弾性シール部材５５の弾性摺動部５８に対して滑り
ながら相対移動する。ここで、弁体４５の外径部はハウ
ジング３３の内壁である摺動ガイド面５３に軽く接触す
る程度に摺動し、この摺動摩擦力は小さく、また弾性シ
ール部材５５の弾性摺動部５８と摺動する弁体４５の摺
動溝５７は弁体４５の外径より細いので、それだけ摺動
接触面が細く小さくなり、この弾性シール部材５５との
摺動摩擦力も小さい。したがって、感温体ばね４６およ
びバイアスばね４７共に小さい付勢力で弁体４５を駆動
することができる。このことから、感温体ばね４６およ
びバイアスばね４７は細く小さいばねにできるため、熱
容量が小さく、それだけ温度変化に対して敏感に速く作
動する。In the above structure, water and hot water are supplied from the water inlet 36 and the hot water inlet 37, respectively, depending on the clearance between the valve element 45 and the water valve seat 43 and the clearance between the valve element 45 and the hot water valve seat 44. And flows into the mixing chamber 41 while being mixed. The urging force of the temperature sensing body spring 46 provided in the mixing chamber 41 changes according to the temperature, and the substantially cylindrical valve body 45 is provided at a position where the urging forces of the temperature sensing body spring 46 and the bias spring 47 are balanced. The temperature of the mixed water moves in the axial direction and reaches the temperature of the mixed water according to the biasing force of the bias spring 47, which is determined by the position of the movable spring receiver 52 being varied by the electric biasing force adjusting means 48. At this time, the holding portion 56 of the elastic seal member 55 provided on the outer peripheral surface of the substantially cylindrical valve body 45 is held by the holding groove 54 on the inner wall of the housing 33, and the sliding groove on the outer peripheral surface of the valve body 45. 5
7 slides relative to the elastic sliding portion 58 of the elastic seal member 55 and moves relative to it. Here, the outer diameter portion of the valve element 45 slides so as to lightly contact the sliding guide surface 53 that is the inner wall of the housing 33, the sliding friction force is small, and the elastic sliding portion 58 of the elastic sealing member 55 is small. Since the sliding groove 57 of the valve body 45 that slides with is thinner than the outer diameter of the valve body 45, the sliding contact surface becomes thinner and smaller, and the sliding frictional force with the elastic seal member 55 is also smaller. Therefore, both the temperature sensitive body spring 46 and the bias spring 47 can drive the valve body 45 with a small biasing force. For this reason, since the temperature sensitive body spring 46 and the bias spring 47 can be made thin and small, the heat capacity is small, and accordingly, the temperature sensitive spring operates sensitively and quickly.

【００６０】弾性シール部材５５の肉厚および内径，摺
動ガイド面５３の径，摺動溝３０の径などに寸法ばらつ
きが生じ、弾性シール部材５５のしめしろが増加して
も、弾性シール部材５５はしめしろ増加を圧縮歪みでは
なく、弾性摺動部５８の曲げ歪みにより吸収しているの
で、しめしろ増加に伴う反力の増加を抑制するようにな
っている。すなわち、弾性シール部材５５のしめしろが
増加しても弾性摺動部５８の摺動溝３０への押しつけ力
が抑制されるので、弁体２０の摺動摩擦力が抑制され
る。Even if the interference of the elastic seal member 55 increases due to dimensional variations in the thickness and inner diameter of the elastic seal member 55, the diameter of the sliding guide surface 53, the diameter of the sliding groove 30, etc., the elastic seal member 55 increases. Since the increase in interference amount 55 is not absorbed by the compression strain but by the bending strain of the elastic sliding portion 58, the increase in reaction force due to the increase in interference amount is suppressed. That is, even if the interference of the elastic seal member 55 increases, the pressing force of the elastic sliding portion 58 against the sliding groove 30 is suppressed, so that the sliding frictional force of the valve body 20 is suppressed.

【００６１】さらに、弾性摺動部５８は外周側から水お
よび湯の圧力により内側に押さえられており摺動溝５７
に密着するようになっているのでシール性がよく、スケ
ールやゴミが咬み込みにくい。かりに、弾性摺動部の肉
厚が薄ければ（望ましくは０．２ｍｍ〜１ｍｍ）ゴミや
スケールが咬み込んでも、弾性摺動部がその形状になじ
み、シール性が確保することができるとともに、摺動摩
擦力は増加せず弁体のロックを防ぐことができる。保持
部５６は保持溝に密着するように第一の流体部材３４と
第二の流体部材３５から保持溝５４を構成しており、第
一の流体部材３４と第二の流体部材３５の勘合した隙間
からの漏れや弾性シール部材５５の外周側の漏れを防止
している。従って、第一の流体部材３４と第二の流体部
材３５の勘合部にシールテープやパッキンを必要としな
い。Further, the elastic sliding portion 58 is pressed inward from the outer peripheral side by the pressure of water and hot water, so that the sliding groove 57 is formed.
Since it adheres well to, it has a good sealing property, and scales and dust are hard to bite. In addition, if the thickness of the elastic sliding portion is thin (preferably 0.2 mm to 1 mm), even if dust or scale is bitten, the elastic sliding portion conforms to its shape, and the sealing property can be secured. The sliding friction force does not increase, and the valve body can be prevented from locking. The holding portion 56 constitutes the holding groove 54 from the first fluid member 34 and the second fluid member 35 so as to be in close contact with the holding groove, and the first fluid member 34 and the second fluid member 35 are fitted together. The leak from the gap and the leak on the outer peripheral side of the elastic seal member 55 are prevented. Therefore, no seal tape or packing is required at the fitting portion between the first fluid member 34 and the second fluid member 35.

【００６２】ハウジング３３は第一の流体部材３４と第
二の流体部材３５に分割できるので組立時には、まず、
弾性シール部材５５を弁体４５の摺動溝５７にセット
し、弁体４５を保持部５６が第二の流体部材３５の保持
溝５６に挿入して、第一の流体部材３４を勘合すればよ
い。従って、弾性シール部材５５を摺動ガイド面５３か
ら圧入する必要がなく、弾性シール部材５５の破損を防
ぐことができる。また、長期間使用した後に弾性シール
部材５５が劣化し交換する必要性が生じても、第一の流
体部材３４をはずせば弁体４５を無理抜きしなくてもよ
いので、弁体４５やハウジング３３の摺動ガイド面５３
を傷つけることなくメンテナンスが行える。Since the housing 33 can be divided into the first fluid member 34 and the second fluid member 35, at the time of assembly, first,
If the elastic seal member 55 is set in the sliding groove 57 of the valve body 45 and the valve body 45 is inserted into the holding groove 56 of the second fluid member 35 by the holding portion 56, the first fluid member 34 is fitted. Good. Therefore, it is not necessary to press-fit the elastic seal member 55 from the sliding guide surface 53, and the elastic seal member 55 can be prevented from being damaged. In addition, even if the elastic seal member 55 deteriorates after a long period of use and needs to be replaced, the valve body 45 does not have to be forcibly removed by removing the first fluid member 34. 33 sliding guide surface 53
Maintenance can be done without damaging.

【００６３】また、ハウジング３３に保持溝５４を形成
し、弁体４５に摺動溝５７を形成した構成により、シー
ル性を確保しながら摺動摩擦力を小さくできる効果のほ
かに、湯または水の供給圧力の変動に対して、弁体４５
の開度を自動補正でき、混合温度性能を安定できるとい
う特有の効果がある。たとえば、他栓の開閉などによっ
て水流入口３６の供給水圧が変動した場合、水弁座４３
と弁体４５との開度がそのままであれば水圧に応じて混
合室４１に流入する水量が変動し、湯と水の混合比が変
動して混合水温度も変動することになる。ところが、供
給水圧が上昇すると、弁体４５の摺動溝５７内の水圧も
上昇し、弾性シール部材５５はハウジング４７に固定さ
れた状態なので、摺動溝５７内の水圧は弁体４５を水弁
座４３側に付勢するように作用する。弁体４５と水弁座
４３間の流速は速く摺動溝３７内の流速が遅いことか
ら、ベルヌーイの定理からしても弁体４５と水弁座４３
間の圧力の方が摺動溝３７内の圧力より低い。したがっ
て供給水圧が上昇すれば、弁体４５を水弁座４３側に付
勢する力が増大し、供給水圧が低下した場合には、弁体
４５を水弁座４３側に付勢する力が減少する。これは湯
側においても同様に作用する。すなわち湯側、水側とも
供給圧変動に対して、その影響を打ち消すように弁体５
７の開度が自動的に補正される。Further, the holding groove 54 is formed in the housing 33 and the sliding groove 57 is formed in the valve body 45. In addition to the effect that the sliding frictional force can be reduced while ensuring the sealing property, hot water or water The valve element 45 against the fluctuation of the supply pressure
There is a unique effect that the opening degree of can be automatically corrected and the mixing temperature performance can be stabilized. For example, when the supply water pressure at the water inlet 36 fluctuates due to the opening / closing of another plug, the water valve seat 43
If the opening degree of the valve body 45 remains unchanged, the amount of water flowing into the mixing chamber 41 changes according to the water pressure, the mixing ratio of hot water and water changes, and the mixed water temperature also changes. However, when the supplied water pressure rises, the water pressure in the sliding groove 57 of the valve body 45 also rises, and the elastic seal member 55 is fixed to the housing 47. It acts so as to urge the valve seat 43 side. Since the flow velocity between the valve body 45 and the water valve seat 43 is fast and the flow velocity in the sliding groove 37 is slow, the valve body 45 and the water valve seat 43 are also found from Bernoulli's theorem.
The pressure between them is lower than the pressure in the sliding groove 37. Therefore, when the supply water pressure rises, the force that urges the valve body 45 toward the water valve seat 43 side increases, and when the supply water pressure decreases, the force that urges the valve body 45 toward the water valve seat 43 side increases. Decrease. This also works on the hot water side. That is, the valve body 5 is arranged so as to cancel out the influence of fluctuations in supply pressure on both the hot water side and the hot water side.
The opening of 7 is automatically corrected.

【００６４】つまり、混合水の温度が変動してその温度
が感温体ばね４６に伝達されて、感温体ばね４６の付勢
力変化によって弁体４５を移動して設定温度に保つ本来
の作用は、温度変動してからの修正動作であるのに対
し、温度変動が発生する事前に、供給圧の変動圧力によ
って弁体４５を移動補正するので、温度変動を事前に抑
制防止できる。That is, the temperature of the mixed water fluctuates and the temperature is transmitted to the temperature sensing body spring 46, and the original action of moving the valve element 45 by the change in the urging force of the temperature sensing body spring 46 and keeping it at the set temperature. In contrast to the correction operation after the temperature fluctuation, the valve element 45 is moved and corrected by the fluctuation pressure of the supply pressure before the temperature fluctuation occurs, so that the temperature fluctuation can be suppressed and prevented in advance.

【００６５】さらに、感温体ばね４６のヒステリシスや
弁体４５のわずかな摺動摩擦などによる温度ずれがもし
生じた場合でも、混合水の温度を温度検出手段４２が検
出して電子制御手段６０にフィードバックされ、その電
子制御手段６０が温度設定手段５９で設定した温度と比
較して偏差を解消する方向に電気的付勢力調節手段４８
を制御する構成ため、温度設定手段５９で設定された温
度に対する温度ずれ、いわゆる温度オフセットが極めて
少ない安定した温度性能が得られる。Further, even if a temperature shift occurs due to hysteresis of the temperature sensing body spring 46 or slight sliding friction of the valve body 45, the temperature detection means 42 detects the temperature of the mixed water and the electronic control means 60 is detected. The electric biasing force adjusting means 48 is fed back and compared with the temperature set by the temperature setting means 59 by the electronic control means 60 to eliminate the deviation.
Since the temperature is controlled by the temperature control means 59, stable temperature performance can be obtained in which the temperature deviation with respect to the temperature set by the temperature setting means 59, so-called temperature offset, is extremely small.

【００６６】しかも、上記のように弁体４５の摺動摩擦
力が小さいことから、感温体ばね４６およびバイアスば
ね４７は細く付勢力の小さいばねにできるため、電気的
付勢力調節手段４８の駆動力も小さくでき、たとえば微
小な低トルクモータにできる。Moreover, since the sliding frictional force of the valve body 45 is small as described above, the temperature-sensitive body spring 46 and the bias spring 47 can be made thin and have a small biasing force, so that the electric biasing force adjusting means 48 is driven. The force can be reduced, and for example, a minute low torque motor can be realized.

【００６７】本発明の第２の実施例によれば、感温体ば
ね４６およびバイアスばね４７共に小さい付勢力で弁体
４５を駆動させることができ、小さい駆動力の電気的付
勢力調節手段４８で高速応答の混合温度制御ができる。
かつ、温度検出手段４２で検出された温度と温度設定手
段５９で設定された目標値に基づいて電気的付勢力調節
手段４８を電子制御手段６０が制御するので、安定した
温度制御ができるという効果がある。According to the second embodiment of the present invention, both the temperature sensing body spring 46 and the bias spring 47 can drive the valve element 45 with a small biasing force, and the electrical biasing force adjusting means 48 with a small driving force. Can control the mixing temperature with high-speed response.
In addition, the electronic control means 60 controls the electric biasing force adjusting means 48 based on the temperature detected by the temperature detecting means 42 and the target value set by the temperature setting means 59, so that stable temperature control can be performed. There is.

【００６８】また、弾性シール部材５５の肉厚および内
径，摺動ガイド面５３の径，摺動溝３０の径などに寸法
ばらつきが生じ、弾性シール部材５５のしめしろが増加
しても、弾性シール部材５５はしめしろ増加を圧縮歪み
ではなく、弾性摺動部５８の曲げ歪みにより吸収してい
るので、しめしろ増加に伴う反力の増加を抑制するよう
になっている。すなわち、弾性シール部材５５のしめし
ろが増加しても弾性摺動部５８の摺動溝３０への押しつ
け力が抑制されるので、弁体２０の摺動摩擦力が抑制さ
れ、上記効果を寸法精度を要することなく実現できる。Further, even if the elastic seal member 55 has a dimensional variation such as a thickness and an inner diameter, a diameter of the sliding guide surface 53, a diameter of the sliding groove 30 and the like, and the interference of the elastic seal member 55 increases, the elasticity of the elastic seal member 55 increases. Since the seal member 55 absorbs the increase in interference by not the compression strain but the bending strain of the elastic sliding portion 58, the increase in reaction force due to the increase in interference is suppressed. That is, even if the interference of the elastic seal member 55 increases, the pressing force of the elastic sliding portion 58 against the sliding groove 30 is suppressed, so that the sliding frictional force of the valve body 20 is suppressed, and the above effect is obtained with dimensional accuracy. It can be realized without requiring.

【００６９】さらに、シール性がよく、スケールやゴミ
が咬み込みにくいとともに、ゴミやスケールが咬み込ん
でも、シール性が確保することができ、摺動摩擦力は増
加せず弁体のロックを防ぐことができる。Further, the sealability is good, and the scale and dust are difficult to bite, and even if the scale and dust are bitten, the sealing property can be secured, and the sliding frictional force does not increase and the valve body is prevented from locking. You can

【００７０】ハウジング３３は第一の流体部材３４と第
二の流体部材３５に分割できるので組立時に、弾性シー
ル部材５５を摺動ガイド面５３から圧入する必要がな
く、弾性シール部材５５の破損を防ぐことができる。ま
た、弾性シール部材５５および弁体４５を着脱する際に
弾性シール部材５５および弁体４５を無理抜きしなくて
もよいので、弁体４５やハウジング３３の摺動ガイド面
５３を傷つけることなく簡単にメンテナンスを行うこと
ができる。Since the housing 33 can be divided into the first fluid member 34 and the second fluid member 35, it is not necessary to press the elastic seal member 55 from the sliding guide surface 53 at the time of assembly, and the elastic seal member 55 is not damaged. Can be prevented. In addition, since it is not necessary to forcibly remove the elastic seal member 55 and the valve body 45 when attaching and detaching the elastic seal member 55 and the valve body 45, the valve body 45 and the sliding guide surface 53 of the housing 33 are not damaged and are simple. Maintenance can be done.

【００７１】次に本発明の第３の実施例を図５を用いて
説明する。図５は本発明の第３の実施例の湯水混合装置
の部分拡大断面図である。第３の実施例において第２の
実施例と相違する点は、弾性シール部材の保持部５６か
ら軸線方向に突出した円弧状の固定部６１と、固定部６
１を保持し保持部の径方向へのずれを防止する径方向保
持溝６２を備え、固定部６１の円弧面を径方向保持溝６
２に密着するよう構成としたことにある。Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a partially enlarged sectional view of a hot and cold water mixing apparatus according to a third embodiment of the present invention. The third embodiment differs from the second embodiment in that an arcuate fixing portion 61 protruding in the axial direction from the elastic seal member holding portion 56 and the fixing portion 6 are provided.
1 is provided and a radial direction holding groove 62 for holding the holding portion to prevent radial displacement of the holding portion is provided.
It is configured to be in close contact with 2.

【００７２】上記構成において、固定部６１は第一の流
体部材３４および第二の流体部材３５の径方向保持溝６
２に保持されるため、組立時にその位置決めが簡単に行
えるとともに、セット時に径方向のずれを生じない。従
って、弁体４５の軸が感温体ばね４６やバイアスばね４
７および摺動ガイド部５３の軸に対してずれを生じにく
く、弁体４５の傾きを防止するとともに、弾性シール部
材５５のしめしろを均一化するように作用するので、弁
体の摺動抵抗増加を防止できるとともに、シールの信頼
性を向上できる。また、水側の圧力が高く、第一の流体
部材３４と第二の流体部材３５の勘合隙間を通じ、弾性
シール部材５５の外周部に高圧がかかると、弾性シール
部材５５は内側につぶれようとするが、径方向保持部６
２により固定部６１が保持されるため、弾性シール部材
５５が保持溝５４から外れたり内側にずれることがな
い。すなわち、弾性シール部材５５の外周部から力が作
用してもしめしろが増加せず、摺動摩擦力の増加を防ぐ
ことができる。さらに、弾性シール部材５５の保持溝５
４および径方向保持溝６２の両方でシールを行ってお
り、シールの信頼性向上が可能となる。In the above structure, the fixing portion 61 is the radial holding groove 6 for the first fluid member 34 and the second fluid member 35.
Since it is held at 2, the positioning can be easily performed at the time of assembly, and the radial deviation does not occur at the time of setting. Therefore, the shaft of the valve body 45 is connected to the temperature sensing body spring 46 and the bias spring 4.
7 and the sliding guide portion 53 are less likely to be displaced with respect to the axis, prevent the valve body 45 from tilting, and act to equalize the interference of the elastic seal member 55, so that the sliding resistance of the valve body is increased. The increase can be prevented and the reliability of the seal can be improved. Further, when the pressure on the water side is high and a high pressure is applied to the outer peripheral portion of the elastic seal member 55 through the fitting gap between the first fluid member 34 and the second fluid member 35, the elastic seal member 55 will crush inside. However, the radial holding portion 6
Since the fixing portion 61 is held by 2, the elastic seal member 55 does not come off the holding groove 54 or shift inward. That is, even if a force is applied from the outer peripheral portion of the elastic seal member 55, the interference does not increase, and the increase in sliding friction force can be prevented. Further, the holding groove 5 of the elastic seal member 55
4 and the radial direction holding groove 62 are both sealed, and the reliability of the seal can be improved.

【００７３】本発明の第３の実施例によれば、弁体４５
の軸ぶれを防止し、弾性シール部材５５のしめしろを均
一化するので、弁体の摺動抵抗増加を防止できるととも
に、シールの信頼性を向上できる。According to the third embodiment of the present invention, the valve element 45
Since the shaft runout is prevented and the interference of the elastic seal member 55 is made uniform, the sliding resistance of the valve body can be prevented from increasing and the reliability of the seal can be improved.

【００７４】また、弾性シール部材５５が保持溝５４か
ら外れたり内側にずれることがないので、弾性シール部
材５５の外周部から力が作用してもしめしろが増加せ
ず、摺動摩擦力の増加を防ぐことができる。Further, since the elastic seal member 55 does not come off from the holding groove 54 or shift inward, the interference does not increase even if a force is applied from the outer peripheral portion of the elastic seal member 55, and the sliding friction force increases. Can be prevented.

【００７５】なお、第２および第３の実施例において、
摺動溝５７と摺動弾性部５８の間にグリスを用いること
によって、より摺動摩擦力を軽減できるとともに、摺動
溝５７と摺動弾性部５８の間にスケールやゴミが咬む込
むことを防止できる。また、シール性がよいのでグリス
の流出を抑えることができ、長期間に渡って摺動摩擦力
を低減できる。In the second and third embodiments,
By using grease between the sliding groove 57 and the sliding elastic portion 58, sliding frictional force can be further reduced, and scale and dust are prevented from being bitten between the sliding groove 57 and the sliding elastic portion 58. it can. Further, since the sealing property is good, it is possible to suppress the outflow of grease and reduce the sliding friction force for a long period of time.

【００７６】図６は本発明の第４の実施例を示すシール
構造を有する自動調圧弁６３の断面図であり、図７は図
６の部分拡大断面図である。同図において６４はハウジ
ングであり、ハウジング６４の周壁には軸線方向に間隔
をおいて第一の流体流入口である水流入口６５および第
二の流体流入口である湯流入口６６が設けてある。水流
入口６５は自動調圧弁６３の本体の中の水一次室６７お
よび水二次室６８を経由し水流出口６９に連通し、同様
に湯流入口６６は湯一次室７０および湯二次室７１を経
由し湯流出口７２に連通している。ハウジング６４内部
には水一次室６７と水二次室６８の境界部分に水弁座７
３が、また、湯一次室７０と湯二次室７１の境界部分に
湯弁座７４が設けてある。FIG. 6 is a sectional view of an automatic pressure regulating valve 63 having a seal structure showing a fourth embodiment of the present invention, and FIG. 7 is a partially enlarged sectional view of FIG. In the figure, reference numeral 64 denotes a housing, and a circumferential wall of the housing 64 is provided with a water inlet 65 which is a first fluid inlet and a hot water inlet 66 which is a second fluid inlet at intervals in the axial direction. . The water inlet 65 communicates with a water outlet 69 via a water primary chamber 67 and a water secondary chamber 68 in the main body of the automatic pressure regulating valve 63, and similarly, the hot water inlet 66 has a hot water primary chamber 70 and a hot water secondary chamber 71. And communicates with the hot water outlet 72. Inside the housing 64, the water valve seat 7 is provided at the boundary between the water primary chamber 67 and the water secondary chamber 68.
3 and a hot water valve seat 74 is provided at the boundary between the hot water primary chamber 70 and the hot water secondary chamber 71.

【００７７】７５は水一次室６７と水二次室６８を区切
る水側弁体７６と湯一次室７０と湯二次室７１を区切る
湯側弁体７７を連結する軸部材であり、軸部材７５の中
心にはハウジング６４の摺動ガイド面７８と摺動する摺
動部７９が設けられている。水側弁体７６及び湯側弁体
７７は、水弁座７３と湯弁座７４と間を軸線方向に移動
可能となっており、そのリフト量に応じて、それぞれ水
及び湯の一次側圧力を減圧している。また、摺動部７９
の外径と水側弁体７６及び湯側弁体７７の外径をほぼ同
一とし、水一次室６７および湯一次室７０において摺動
部７９の受圧面積と水側弁体７６及び湯側弁体７７の一
次室受圧面積がほぼ一致するように構成しており、一次
圧の影響を排除している。Reference numeral 75 is a shaft member for connecting a water-side valve body 76 for partitioning the water primary chamber 67 and the water secondary chamber 68, and a hot-water valve body 77 for partitioning the hot water primary chamber 70 and the hot water secondary chamber 71. At the center of 75, a sliding portion 79 that slides on the sliding guide surface 78 of the housing 64 is provided. The water side valve body 76 and the hot water side valve body 77 are movable in the axial direction between the water valve seat 73 and the hot water valve seat 74, and the primary pressures of water and hot water are respectively changed according to the lift amount. Is decompressed. Also, the sliding portion 79
And the water-side valve body 76 and the hot-water valve body 77 have substantially the same outer diameter, and the pressure receiving area of the sliding portion 79 and the water-side valve body 76 and the hot-water valve in the water primary chamber 67 and the hot water primary chamber 70 are the same. The pressure receiving areas of the primary chambers of the body 77 are configured to be substantially the same, and the influence of the primary pressure is eliminated.

【００７８】また、ハウジング６４の内壁で摺動部７９
の外側をガイドする摺動ガイド面７８の一部に設けられ
た保持溝８０は、弾性シール部材であるＸリング８１の
外周側二片からなる保持部８２が嵌まる凹溝で、この保
持溝８０によって、摺動部７９（軸部材７５）が軸方向
に動作してもＸリング８１は定位置のまま保持される。Further, the sliding portion 79 is provided on the inner wall of the housing 64.
The holding groove 80 provided in a part of the sliding guide surface 78 that guides the outside of the is a concave groove into which the holding portion 82 composed of two pieces on the outer peripheral side of the X ring 81 that is an elastic seal member is fitted. Even if the sliding portion 79 (shaft member 75) moves in the axial direction by the 80, the X ring 81 is held in a fixed position.

【００７９】また、摺動部７９の外周面に設けられた摺
動溝８３は、Ｘリング８１の内径側二片からなる弾性摺
動部８４とほぼ同じであり、Ｘリング８１がしめしろを
有する外径で、Ｘリング８１の幅に軸部材７５の軸方向
の最大移動幅を加えた幅を有する構成である。Further, the sliding groove 83 provided on the outer peripheral surface of the sliding portion 79 is almost the same as the elastic sliding portion 84 composed of two pieces on the inner diameter side of the X ring 81, and the X ring 81 has the interference. The outer diameter has a width obtained by adding the maximum movement width of the shaft member 75 in the axial direction to the width of the X ring 81.

【００８０】なお、軸部材７５の軸のこじれを防止する
ためガイド部８５、８６が設けられている。また、８７
は組立時に軸部材７５を挿入するための挿入孔であり、
軸部材７５が挿入された後、ガイド部８５を設けたプラ
グ８８をねじ込むようになっている。Guide parts 85 and 86 are provided to prevent the shaft of the shaft member 75 from twisting. Also, 87
Is an insertion hole for inserting the shaft member 75 during assembly,
After the shaft member 75 is inserted, the plug 88 provided with the guide portion 85 is screwed in.

【００８１】以上の構成において本実施例の動作につい
て説明する。軸部材７５にかかる力を考えた場合、水一
次室６７と湯一次室７０はＸリング８１によりシールさ
れているので、水側と湯側をそれぞれ別に考えてよい。
水一次室６７における水一次圧の軸線方向への受圧面は
摺動部７９と水側弁体７６の一次室６７側の面および摺
動溝８３水側の面であり、軸線方向左側に圧力を受ける
のは摺動部７９、軸線方向右側に圧力を受けるのは水側
弁体７６の一次室６７側の面および摺動溝８３水側の面
である。摺動部７９の受圧面積と、水側弁体７６の一次
室６７側の面と摺動溝８３水側の面の受圧面積の和は等
しく、軸線方向の力が相殺されるので、水一次室６７に
おいて水一次圧の軸部材７５への影響を無視できる。こ
こで、軸線方向への力を考えているため受圧面積とは軸
に垂直な面への投影した面積である。同様に、湯一次室
７０における湯一次圧の軸線方向への受圧面は摺動部７
９と湯側弁体７７の一次室７０側の面および摺動溝８３
湯側の面であり、軸線方向右側に圧力を受けるのは摺動
部７９、軸線方向左側に圧力を受けるのは湯側弁体７７
の一次室７０側の面および摺動溝８３湯側の面である。
摺動部７９の受圧面積と、湯側弁体７７の一次室７０側
の面と摺動溝８３湯側の面の受圧面積の和は等しく、軸
線方向の力が相殺されるので、湯一次室７０における湯
一次圧の軸部材７５への影響を無視できる。従って、軸
部材７５の軸線方向に移動しようとする力は、水および
湯二次室６８，７１側で水側および湯側弁体７６，７７
の受ける二次圧力の影響のみである。すなわち水および
湯二次室６８，７１の二次圧が水側弁体及び湯側弁体７
６，７７に及ぼす力（すなわち湯と水の二次圧の圧力
差）によって軸線方向に移動する。ここで、水側弁体７
６及び湯側弁体７７の二次側受圧面積は等しくしてある
ので、湯と水の二次圧が高い側から低い側へと軸部材７
５は移動し、圧力が高い側の弁開度を小さくし、圧力が
低い側の弁開度を大きくする。従って、圧力が高い側で
は弁による圧力損失が増加することにより二次圧が減少
し、圧力が低い側では弁による圧力損失が減少すること
により二次圧が増加する。そして、湯と水の二次側圧が
等しくなると、軸部材７５の軸線方向の力がすべて釣り
合い、軸部材７５は停止する。すなわち、二次圧の圧力
バランスが崩れると圧力差によって軸部材７５が移動
し、それに従って水側弁体７６及び湯側弁体７７のリフ
トが変化することで、一次圧の減圧の割合を変化させ、
二次圧を等圧化するというものである。The operation of this embodiment having the above configuration will be described. Considering the force applied to the shaft member 75, the water primary chamber 67 and the hot water primary chamber 70 are sealed by the X-ring 81, so the water side and the hot water side may be considered separately.
The pressure receiving surfaces of the water primary pressure in the water primary chamber 67 in the axial direction are the sliding portion 79, the primary chamber 67 side surface of the water side valve element 76 and the sliding groove 83 water side surface, and the pressure is applied to the left side in the axial direction. It is the sliding portion 79 that receives the pressure, and the primary chamber 67 side surface of the water side valve element 76 and the sliding groove 83 water side surface that receive the pressure on the axial right side. The sum of the pressure receiving area of the sliding portion 79 and the pressure receiving area of the surface of the water side valve body 76 on the side of the primary chamber 67 and the surface of the sliding groove 83 on the water side are equal, and the forces in the axial direction are canceled out. In the chamber 67, the influence of the primary water pressure on the shaft member 75 can be ignored. Here, since the force in the axial direction is taken into consideration, the pressure receiving area is an area projected onto a plane perpendicular to the axis. Similarly, the pressure receiving surface in the axial direction of the hot water primary pressure in the hot water primary chamber 70 has a sliding portion 7.
9 and the surface on the primary chamber 70 side of the hot water valve body 77 and the sliding groove 83.
It is the surface on the molten metal side, and the sliding portion 79 receives pressure on the right side in the axial direction, and the molten metal valve body 77 receives pressure on the left side in the axial direction.
The surface on the primary chamber 70 side and the surface on the sliding groove 83 hot water side.
The sum of the pressure receiving area of the sliding portion 79 and the pressure receiving area of the surface of the hot water side valve body 77 on the primary chamber 70 side and the surface of the sliding groove 83 on the hot water side are equal, and the forces in the axial direction are canceled out. The influence of the primary pressure of the hot water on the shaft member 75 in the chamber 70 can be ignored. Therefore, the force of the shaft member 75 trying to move in the axial direction is such that the water-side and hot-water side valve bodies 76, 77 on the water and hot water secondary chambers 68, 71 side.
It is only the influence of the secondary pressure which is received. That is, the secondary pressure of the water and hot water secondary chambers 68, 71 is the water side valve body and the hot water side valve body 7.
The force exerted on 6, 77 (that is, the pressure difference between the secondary pressures of hot water and water) causes axial movement. Here, the water side valve body 7
Since the secondary side pressure receiving areas of 6 and the hot water valve body 77 are made equal, the shaft member 7 is moved from the side having a high secondary pressure of hot water to the side having a low secondary pressure.
5 moves to decrease the valve opening on the high pressure side and increase the valve opening on the low pressure side. Therefore, on the high pressure side, the secondary pressure decreases due to the increase of the pressure loss due to the valve, and on the low pressure side, the secondary pressure increases due to the decrease of the pressure loss due to the valve. When the secondary pressures of the hot water and the water become equal, all the axial forces of the shaft member 75 are balanced and the shaft member 75 stops. That is, when the pressure balance of the secondary pressure is lost, the shaft member 75 moves due to the pressure difference, and the lift of the water side valve body 76 and the hot water side valve body 77 changes accordingly, thereby changing the reduction rate of the primary pressure. Let
This is to equalize the secondary pressure.

【００８２】このとき、摺動部７９もしくはシール部分
の摺動抵抗が大きいと、その摺動抵抗を越える力が軸部
材７５に加わるまで軸部材７５は移動しない。すなわち
摺動抵抗分の圧力差が二次側圧に生じてしまい、その摺
動抵抗が大きいほど圧力差が大きくなってしまう。At this time, if the sliding resistance of the sliding portion 79 or the seal portion is large, the shaft member 75 does not move until a force exceeding the sliding resistance is applied to the shaft member 75. That is, a pressure difference corresponding to the sliding resistance is generated in the secondary side pressure, and the larger the sliding resistance, the larger the pressure difference.

【００８３】しかるに、軸部材７５の外周面に設けられ
たＸリング８１の保持部８２はハウジング６４の内壁の
保持溝８０に保持されており、軸部材７５の外周面の摺
動溝８３がＸリング８１の弾性摺動部８４に対して滑り
ながら相対移動する。ここで、軸部材７５の外径部はハ
ウジング６４の内壁である摺動ガイド面７８に軽く接触
する程度に摺動し、この摺動摩擦力は小さく、またＸリ
ング８１の弾性摺動部８４と摺動する軸部材７５の摺動
溝８３は摺動部７９の外径より細いので、それだけ摺動
接触面が細く小さくなり、このＸリング８１との摺動摩
擦力も小さい。このことから、水二次圧と湯二次圧の圧
力差がほとんど生じることなく、正確に等圧化を行える
ものである。また摺動抵抗が小さいので、水または湯の
一次圧が変動し、軸部材７５が移動する場合でも敏感に
速く作動する。However, the holding portion 82 of the X ring 81 provided on the outer peripheral surface of the shaft member 75 is held in the holding groove 80 on the inner wall of the housing 64, and the sliding groove 83 on the outer peripheral surface of the shaft member 75 is X. It moves relative to the elastic sliding portion 84 of the ring 81 while sliding. Here, the outer diameter portion of the shaft member 75 slides so as to lightly contact the sliding guide surface 78 which is the inner wall of the housing 64, the sliding friction force is small, and the elastic sliding portion 84 of the X ring 81 is Since the sliding groove 83 of the sliding shaft member 75 is thinner than the outer diameter of the sliding portion 79, the sliding contact surface becomes thinner and smaller, and the sliding frictional force with the X ring 81 is also smaller. Therefore, the pressure equalization can be accurately performed with almost no pressure difference between the water secondary pressure and the hot water secondary pressure. Further, since the sliding resistance is small, the primary pressure of water or hot water fluctuates, and the shaft member 75 operates sensitively and quickly even when it moves.

【００８４】また、Ｘリング８１の肉厚および内径，摺
動ガイド面７８の径，摺動溝８３の径などに寸法ばらつ
きが生じ、Ｘリング８１のしめしろが増加しても、Ｘリ
ング８１はしめしろ増加を圧縮歪みではなく、弾性摺動
部８４および保持部８２の各片の曲げ歪みにより吸収し
ているので、しめしろ増加に伴う反力の増加を抑制する
ようになっている。すなわち、Ｘリング８１のしめしろ
が増加しても弾性摺動部８４の摺動溝８３への押しつけ
力が抑制されるので、軸部材７５の摺動摩擦力が抑制さ
れる。Even if the interference of the X ring 81 increases due to dimensional variations in the thickness and inner diameter of the X ring 81, the diameter of the sliding guide surface 78, the diameter of the sliding groove 83, etc. Since the increase in interference amount is absorbed not by the compression strain but by the bending strain of each piece of the elastic sliding portion 84 and the holding portion 82, the increase in reaction force due to the increase in interference amount is suppressed. That is, even if the interference of the X ring 81 increases, the pressing force of the elastic sliding portion 84 against the sliding groove 83 is suppressed, so that the sliding frictional force of the shaft member 75 is suppressed.

【００８５】以上述べたように本実施例によれば、ここ
で、Ｘリング８１の弾性摺動部８４と摺動する軸部材７
５の摺動溝８３は摺動部７９の外径より細いので、それ
だけ摺動接触面が細く小さくなり、Ｘリング８１との摺
動摩擦力も小さいので、水二次圧と湯二次圧の圧力差が
ほとんど生じることなく、敏感に速く正確に等圧化を行
うことができる。As described above, according to this embodiment, here, the shaft member 7 that slides on the elastic sliding portion 84 of the X ring 81 is used.
Since the sliding groove 83 of No. 5 is thinner than the outer diameter of the sliding portion 79, the sliding contact surface becomes thinner and smaller, and the sliding frictional force with the X ring 81 is also smaller. Sensitive, fast, and accurate equalization can be performed with almost no difference.

【００８６】また、Ｘリング８１はしめしろ増加を圧縮
歪みではなく、弾性摺動部８４および保持部８２の各片
の曲げ歪みにより吸収しているので、Ｘリング８１のし
めしろが増加しても弾性摺動部８４の摺動溝８３への押
しつけ力が抑制され、軸部材７５の摺動摩擦力が抑制す
ることができる。従って、寸法精度を要することなく、
量産性を向上し、低コスト化が実現できる。Further, since the X ring 81 absorbs the increase in interference by not the compressive strain but the bending strain of each piece of the elastic sliding portion 84 and the holding portion 82, even if the interference of the X ring 81 increases. The pressing force of the elastic sliding portion 84 against the sliding groove 83 is suppressed, and the sliding frictional force of the shaft member 75 can be suppressed. Therefore, without requiring dimensional accuracy,
Mass productivity can be improved and cost reduction can be realized.

【００８７】なお、本発明の第１から第４の実施例以外
においても軸部材または弁体が軸線方向に摺動するシー
ル構造であれば、同様の効果が得られる。In addition to the first to fourth embodiments of the present invention, the same effect can be obtained as long as the shaft member or the valve body has a seal structure that slides in the axial direction.

【００８８】[0088]

【発明の効果】以上のように本発明のシール構造は、軸
部材と、弾性シール部材を保持する保持溝と、軸部材の
外周面に設けられ弾性シール部材に対して摺動する摺動
溝を有し、弾性シール部材を保持溝に保持される保持部
と、軸部材の径方向のしめしろの増加による軸線方向へ
の摺動摩擦力増加を抑制する弾性摺動部から構成してお
り、摺動溝により軸部材の摺動径が小さくなり摺動摩擦
力の絶対値を低減できるとともに、弾性摺動部によりし
めしろ増加による軸線方向への摺動摩擦力増加が抑制さ
れるように作用するので、十分なしめしろを確保でき確
実にシールが行えるとともに、摺動性が維持できる。As described above, in the seal structure of the present invention, the shaft member, the holding groove for holding the elastic seal member, and the sliding groove provided on the outer peripheral surface of the shaft member and sliding with respect to the elastic seal member. And a holding portion that holds the elastic seal member in the holding groove, and an elastic sliding portion that suppresses an increase in sliding frictional force in the axial direction due to an increase in radial interference of the shaft member, The sliding groove reduces the sliding diameter of the shaft member, reducing the absolute value of the sliding frictional force, and the elastic sliding portion acts to suppress the increase in the sliding frictional force in the axial direction due to the increased interference. , It is possible to secure a sufficient interference and ensure sealing, and maintain slidability.

【００８９】また、本発明の湯水混合装置は、ハウジン
グの内壁を摺動ガイド面として軸線方向に移動可能に組
み込んだ湯と水の混合比を調節する略円筒状の弁体と、
摺動ガイド面の一部に設けられ弾性シール部材を保持す
る保持溝と、弁体の外周面に設けられ弾性シール部材に
対して摺動する摺動溝を有し、弾性シール部材を保持部
と、弁体の径方向のしめしろの増加による軸線方向への
摺動摩擦力増加を抑制する弾性摺動部から構成したこと
により、摺動摩擦力を低減できるとともに、弾性シール
部材の弾性摺動部がしめしろの増加により軸線方向の摺
動摩擦力の増加を抑制するように作用するので、感温体
ばねおよびバイアスばね共に小さい付勢力で弁体を駆動
させることができ、感温体ばねおよびバイアスばねは細
く小さいばねで、熱容量が小さく温度変化に対して熱応
答速度が速く作動するように作用するとともに、湯水混
合装置を小型コンパクトにできるものである。Further, the hot and cold water mixing apparatus of the present invention comprises a substantially cylindrical valve body for adjusting the mixing ratio of hot water and water, which is movably installed in the axial direction with the inner wall of the housing as a sliding guide surface.
A holding groove is provided in a part of the sliding guide surface to hold the elastic seal member, and a sliding groove is provided in the outer peripheral surface of the valve body to slide on the elastic seal member. And an elastic sliding portion that suppresses an increase in sliding frictional force in the axial direction due to an increase in the interference in the radial direction of the valve element, the sliding frictional force can be reduced and the elastic sliding portion of the elastic seal member can be reduced. Since the increase of the interference amount acts to suppress the increase of the sliding frictional force in the axial direction, both the temperature sensing body spring and the bias spring can drive the valve body with a small biasing force, and the temperature sensing body spring and the bias spring can be driven. The spring is a thin and small spring, which has a small heat capacity and operates so as to have a high thermal response speed with respect to a temperature change, and also makes the hot and cold water mixing device small and compact.

【００９０】さらに、ハウジングは第一の流体部材と第
二の流体部材に分割可能であり、第一の流体部材と第二
の流体部材とから保持溝を構成したことにより、弾性シ
ール部材を圧入して組立を行う必要がなく、弾性シール
部材を損傷することなく確実にセットできる。また、長
期間使用し、弾性シール部材が劣化した場合などのメン
テナンスも、ハウジングを分割することによって簡単に
弾性シール材を交換できる。Further, the housing can be divided into the first fluid member and the second fluid member, and the holding groove is formed by the first fluid member and the second fluid member, so that the elastic seal member is press-fitted. Since it is not necessary to assemble the elastic seal member, the elastic seal member can be reliably set without being damaged. Also, for maintenance such as when the elastic seal member is deteriorated after being used for a long time, the elastic seal material can be easily replaced by dividing the housing.

【００９１】加えて、弾性シール部材を断面外周部が略
円形となるシール層とシール層内部に多数の中空部を有
するＯリングで構成したことにより、Ｏリングの圧縮の
しめしろが増加しても、内部が中空状であるため弁体ま
たはハウジングへの押しつけ力の増加が通常のＯリング
よりも抑制されるので、弁体の軸線方向への摺動摩擦力
を増加しないという効果がある。また、外周部のシール
層は通常のＯリングと同様に略円形となっているので確
実なシールが可能である。In addition, since the elastic seal member is composed of the seal layer having a substantially circular outer peripheral portion and the O-ring having a large number of hollow portions inside the seal layer, the interference of compression of the O-ring increases. However, since the inside is hollow, the increase in the pressing force against the valve body or the housing is suppressed more than in the case of a normal O-ring, so that the sliding frictional force in the axial direction of the valve body is not increased. Further, since the seal layer on the outer peripheral portion has a substantially circular shape like a normal O-ring, reliable sealing is possible.

【００９２】また、弾性シール部材をＸリングで構成し
たことにより、径方向へのしめしろが増加しても、圧縮
弾性ではなく曲げ弾性のしめしろ増加であるとともに、
保持部および弾性摺動部の両側でしめしろを吸収してい
るので、しめしろ増加による弁体への押しつけ力が抑制
され、弁体の軸線方向への摺動摩擦力増加をより抑制す
るという効果がある。また、保持溝側および摺動溝側と
もにそれぞれ二片でシールを行うので確実なシールを行
うことができる。Further, since the elastic seal member is composed of the X ring, even if the interference amount in the radial direction increases, the interference amount of the bending elasticity is increased instead of the compression elasticity.
Since the interference is absorbed on both sides of the holding part and the elastic sliding part, the pressing force against the valve body due to the increased interference is suppressed, and the increase in sliding frictional force in the axial direction of the valve is further suppressed. There is. Further, since sealing is performed with two pieces on each of the holding groove side and the sliding groove side, reliable sealing can be performed.

【００９３】また、弾性シール部材の断面形状を略Ｙ字
形状とし、弾性シール部材の外周側の一片を保持部と
し、弾性シール部材の内周側の二片を軸部材または弁体
に接する弾性摺動部として構成したことにより、曲げ弾
性でしめしろの増加を吸収し、弾性摺動部による弁体へ
の押しつけ力を抑制するので、弁体の軸線方向への摺動
摩擦力を増加しないという効果がある。また、スケール
やゴミ等が弁体摺動時に弁体と弾性摺動部の間に咬み込
んでも、弾性摺動部がスケールやゴミの形状に応じて変
形するので、シール性を維持することができるととも
に、弁体または軸部の軸線方向への摺動摩擦力増加を抑
制することができる。The elastic seal member has a substantially Y-shaped cross section, one piece on the outer peripheral side of the elastic seal member serves as a holding portion, and two pieces on the inner peripheral side of the elastic seal member contact the shaft member or the valve body. Since it is configured as a sliding part, the bending elastic force absorbs the increase in interference and suppresses the pressing force of the elastic sliding part against the valve body, so that the sliding frictional force in the axial direction of the valve body does not increase. effective. In addition, even if scale or dust gets caught between the valve body and the elastic sliding portion during sliding of the valve body, the elastic sliding portion is deformed according to the shape of the scale or dust, so that the sealability can be maintained. In addition, it is possible to suppress an increase in sliding frictional force in the axial direction of the valve body or the shaft portion.

【００９４】また、弾性シール部材の保持部から軸線方
向に突出した固定部と、固定部を保持し保持部の径方向
へのずれを防止する径方向保持溝を備えて構成したこと
により、弾性シール部材の径方向へのずれを防止してい
るので、しめしろのばらつきを低減でき、寸法精度を要
することなく、量産性を向上し、低コスト化が実現でき
る。また、第一の流体または第二の流体の圧力が高圧で
あり、第一の流体部材と第二の流体部材と勘合部を通じ
て弾性シール部材外周側に高圧がかかっても固定部が径
方向保持溝に押しつけられるので、外周部にかかる圧力
が高いほど第一および第二の流体間のシール性が向上す
るという効果がある。Further, the elastic seal member is provided with the fixing portion projecting from the holding portion in the axial direction and the radial holding groove for holding the fixing portion and preventing the holding portion from being displaced in the radial direction. Since the seal member is prevented from being displaced in the radial direction, variations in interference can be reduced, dimensional accuracy is not required, mass productivity can be improved, and cost reduction can be realized. Further, even if the pressure of the first fluid or the second fluid is high and the high pressure is applied to the outer peripheral side of the elastic seal member through the fitting portion between the first fluid member and the second fluid member, the fixed portion is held in the radial direction. Since it is pressed against the groove, there is an effect that the higher the pressure applied to the outer peripheral portion, the better the sealing property between the first and second fluids.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の第１の実施例における湯水混合装置の
断面図FIG. 1 is a sectional view of a hot and cold water mixing apparatus according to a first embodiment of the present invention.

【図２】同湯水混合装置の部分拡大断面図FIG. 2 is a partially enlarged sectional view of the hot water mixing device.

【図３】本発明の第２の実施例における湯水混合装置の
要部断面の構成図FIG. 3 is a configuration diagram of a cross section of a main part of a hot and cold water mixing apparatus according to a second embodiment of the present invention.

【図４】同湯水混合装置の部分拡大断面図FIG. 4 is a partially enlarged sectional view of the hot water mixing device.

【図５】本発明の第３の実施例における湯水混合装置の
部分拡大断面図FIG. 5 is a partially enlarged sectional view of a hot and cold water mixing apparatus according to a third embodiment of the present invention.

【図６】本発明の第４の実施例の自動調圧弁の断面図FIG. 6 is a sectional view of an automatic pressure regulating valve according to a fourth embodiment of the present invention.

【図７】同自動調圧弁の部分拡大断面図FIG. 7 is a partially enlarged sectional view of the same automatic pressure regulating valve.

【図８】従来の湯水混合装置の断面図FIG. 8 is a sectional view of a conventional hot and cold water mixing device.

【図９】同湯水混合装置の部分拡大断面図FIG. 9 is a partially enlarged cross-sectional view of the hot water mixing device.

【図１０】同湯水混合装置の部分拡大断面図FIG. 10 is a partially enlarged sectional view of the hot water mixing device.

【図１１】（ａ）従来の湯水混合装置の中央部に突起を
設けたツール環の部分拡大断面図 （ｂ）従来の湯水混合装置の両端に突起を設けたツール
環の部分拡大断面図 （ｃ）従来の湯水混合装置の中央及び両端に突起を設け
たツール環の部分拡大断面図FIG. 11 (a) is a partially enlarged cross-sectional view of a tool ring provided with protrusions at the center of a conventional hot-water mixing apparatus. (B) Partially enlarged sectional view of a tool ring provided with protrusions at both ends of a conventional hot-water mixing apparatus. c) Partial enlarged cross-sectional view of a tool ring provided with protrusions at the center and both ends of a conventional hot and cold water mixing device

【符号の説明】[Explanation of symbols]

１１ ハウジング １２ 水流入口 １３ 湯流入口 １４ 混合水流出口 １８ 水弁座 １９ 湯弁座 ２０ 弁体 ２１ 感温体ばね ２２ バイアスばね ２３ 付勢力調節手段 ２７ 摺動ガイド面 ２８ 保持溝 ２９ Ｏリング（弾性シール部材） ２９ｃ 保持部 ２９ｄ 弾性摺動部 ３０ 摺動溝 ４８ 電気的付勢力調節手段（付勢力調節手段） ５３ 摺動ガイド面 ５４ 保持溝 ５５ 弾性シール部材 ５６ 保持部 ５７ 摺動溝 ５８ 弾性摺動部 ６１ 固定部 ６２ 径方向保持溝 ６４ ハウジング ６５ 水流入口（第一の流体流入口） ６６ 湯流入口（第二の流体流入口） ７５ 軸部材 ７８ 摺動ガイド面 ７９ 摺動部 ８０ 保持溝 ８１ Ｘリング（弾性シール部材） ８２ 保持部 ８３ 摺動溝 ８４ 弾性摺動部 11 Housing 12 Water Inlet 13 Hot Water Inlet 14 Mixed Water Outlet 18 Water Valve Seat 19 Hot Water Valve Seat 20 Valve Body 21 Temperature Sensing Spring 22 Bias Spring 23 Biasing Force Adjusting Means 27 Sliding Guide Surface 28 Holding Groove 29 O Ring (Elasticity) Seal member) 29c Holding part 29d Elastic sliding part 30 Sliding groove 48 Electric biasing force adjusting means (biasing force adjusting means) 53 Sliding guide surface 54 Holding groove 55 Elastic seal member 56 Holding part 57 Sliding groove 58 Elastic sliding Moving part 61 Fixed part 62 Radial holding groove 64 Housing 65 Water inlet (first fluid inlet) 66 Hot water inlet (second fluid inlet) 75 Shaft member 78 Sliding guide surface 79 Sliding portion 80 Holding groove 81 X ring (elastic seal member) 82 Holding part 83 Sliding groove 84 Elastic sliding part

Claims (7)

【特許請求の範囲】[Claims] 【請求項１】第一の流体流入口と第二の流体流入口を軸
線方向に間隔をおいて周壁に開けたハウジングと、前記
第一の流体流入口と第二の流体流入口との間の前記ハウ
ジングの内壁を摺動ガイド面として軸線方向に移動する
軸部材と、前記摺動ガイド面の一部に設けられ弾性シー
ル部材を保持する保持溝と、前記軸部材の外周面に設け
られ前記弾性シール部材に対して摺動する摺動溝を有
し、弾性シール部材は前記保持溝に保持される保持部
と、前記軸部材の径方向のしめしろの増加による軸線方
向への摺動摩擦力増加を抑制する弾性摺動部からなるシ
ール構造。1. A housing in which a first fluid inflow port and a second fluid inflow port are opened in a peripheral wall with an axial space therebetween, and between the first fluid inflow port and the second fluid inflow port. A shaft member that moves in the axial direction with the inner wall of the housing as a sliding guide surface, a holding groove that is provided in a part of the sliding guide surface and holds an elastic seal member, and an outer peripheral surface of the shaft member. The elastic seal member has a sliding groove that slides with respect to the elastic seal member, and the elastic seal member has a holding portion held in the holding groove and sliding friction in the axial direction due to an increase in the radial interference of the shaft member. Seal structure consisting of elastic sliding parts that suppress force increase. 【請求項２】水を流入する第一の流体流入口と湯を流入
する第二の流体流入口とを軸線方向に間隔をおいて周壁
に開けたハウジングと、前記水流入口と湯流入口との間
の前記ハウジングの内壁を摺動ガイド面として軸線方向
に移動可能に組み込んだ湯と水の混合比を調節する略円
筒状の弁体と、前記水流入口側で前記弁体の軸線方向の
一端面に対向する水弁座と、前記湯流入口側で前記弁体
の軸線方向の他端面に対向する湯弁座と、前記水弁座の
下流側に設けた混合水流出口と、前記混合水の温度上昇
に伴い湯の割合を減少させる方向に前記弁体を付勢する
感温体ばねと、前記弁体を前記感温体ばねとは反対方向
に付勢するバイアスばねと、前記二つのばねの少なくと
も一方の付勢力を可変し混合温度を調節する付勢力調節
手段と、前記摺動ガイド面の一部に設けられ弾性シール
部材を保持する保持溝と、略円筒状の前記弁体の外周面
に設けられ前記弾性シール部材に対して摺動する摺動溝
を有し、弾性シール部材は前記保持溝に保持される保持
部と、前記弁体の径方向のしめしろの増加による軸線方
向への摺動摩擦力増加を抑制する弾性摺動部からなる湯
水混合装置。2. A housing in which a first fluid inflow port for inflowing water and a second fluid inflow port for inflowing hot water are opened in a peripheral wall with a gap in the axial direction, and the water inflow port and the hot water inflow port. Between the inner wall of the housing as a sliding guide surface and movably installed in the axial direction to adjust the mixing ratio of hot water and water, and a substantially cylindrical valve body, and the water inlet side of the valve body in the axial direction of the valve body. A water valve seat facing one end face, a hot water valve seat facing the other end face in the axial direction of the valve body on the hot water inlet side, a mixed water outlet provided on the downstream side of the water valve seat, and the mixing A temperature sensitive body spring for urging the valve body in a direction to decrease the proportion of hot water as the temperature of water rises; a bias spring for urging the valve body in a direction opposite to the temperature sensitive body spring; Urging force adjusting means for adjusting the mixing temperature by changing the urging force of at least one of the two springs; The elastic seal has a holding groove provided in a part of the id surface for holding the elastic seal member, and a sliding groove provided on the outer peripheral surface of the substantially cylindrical valve body and sliding with respect to the elastic seal member. The member is a hot and cold water mixing apparatus including a holding portion held in the holding groove and an elastic sliding portion that suppresses an increase in sliding frictional force in the axial direction due to an increase in a radial interference of the valve body. 【請求項３】ハウジングは第一の流体流入口を有する第
一の流体部材と第二の流体流入口を有する第二の流体部
材に分割可能であり、第一の流体部材と第二の流体部材
とから保持溝を構成した請求項１記載のシール構造。3. The housing is divisible into a first fluid member having a first fluid inlet and a second fluid member having a second fluid inlet, the first fluid member and the second fluid member. The seal structure according to claim 1, wherein the holding groove is formed of a member. 【請求項４】弾性シール部材は、断面外周部が略円形と
なるシール層と、前記シール層内部に多数の中空部を有
するＯリングで構成された請求項１または３記載のシー
ル構造。4. The seal structure according to claim 1, wherein the elastic seal member is composed of a seal layer having a substantially circular outer peripheral portion and an O-ring having a large number of hollow portions inside the seal layer. 【請求項５】弾性シール部材はＸリングで構成された請
求項１または３記載のシール構造。5. The seal structure according to claim 1, wherein the elastic seal member is composed of an X ring. 【請求項６】弾性シール部材は断面形状が略Ｙ字形状で
あり、前記弾性シール部材の外周側の一片を保持部と
し、前記弾性シール部材の内周側の二片を軸部材または
弁体に接する弾性摺動部として構成した請求項１または
３記載のシール構造。6. The elastic seal member has a substantially Y-shaped cross section, one piece on the outer peripheral side of the elastic seal member is a holding portion, and two pieces on the inner peripheral side of the elastic seal member are a shaft member or a valve body. The seal structure according to claim 1 or 3, which is configured as an elastic sliding portion that comes into contact with. 【請求項７】弾性シール部材の保持部から軸線方向に突
出した固定部と、前記固定部を保持し前記保持部の径方
向へのずれを防止する径方向保持溝を有する請求項６記
載のシール構造。7. The elastic seal member according to claim 6, further comprising a fixing portion projecting from the holding portion in the axial direction and a radial holding groove for holding the fixing portion and preventing the holding portion from being displaced in the radial direction. Seal structure.
JP11246396A 1996-05-07 1996-05-07 Seal structure and hot water mixing apparatus using the same Expired - Fee Related JP3791046B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11246396A JP3791046B2 (en) 1996-05-07 1996-05-07 Seal structure and hot water mixing apparatus using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11246396A JP3791046B2 (en) 1996-05-07 1996-05-07 Seal structure and hot water mixing apparatus using the same

Publications (2)

Publication Number Publication Date
JPH09296871A true JPH09296871A (en) 1997-11-18
JP3791046B2 JP3791046B2 (en) 2006-06-28

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ID=14587274

Family Applications (1)

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Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001263511A (en) * 2000-03-17 2001-09-26 Toto Ltd Mixing valve for water combination faucet
JP2004239283A (en) * 2003-02-03 2004-08-26 Nippon Steel Corp Cylinder valve excellent in function for preventing water hammer phenomenon
JP2007247785A (en) * 2006-03-16 2007-09-27 Nippon Thermostat Co Ltd Hot water flow preventing valve
CN107842611A (en) * 2017-11-10 2018-03-27 广东汉特科技有限公司 A kind of valve element seal washer
CN109505978A (en) * 2018-12-29 2019-03-22 浙江德众汽车零部件制造有限公司 A kind of compensation interior swollen plugging mechanism of radial compliance
CN115325252A (en) * 2022-08-12 2022-11-11 涌镇液压机械（上海）有限公司 Automatic regulating temp. control change valve

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Publication number Priority date Publication date Assignee Title
JP2001263511A (en) * 2000-03-17 2001-09-26 Toto Ltd Mixing valve for water combination faucet
JP2004239283A (en) * 2003-02-03 2004-08-26 Nippon Steel Corp Cylinder valve excellent in function for preventing water hammer phenomenon
JP2007247785A (en) * 2006-03-16 2007-09-27 Nippon Thermostat Co Ltd Hot water flow preventing valve
CN107842611A (en) * 2017-11-10 2018-03-27 广东汉特科技有限公司 A kind of valve element seal washer
CN109505978A (en) * 2018-12-29 2019-03-22 浙江德众汽车零部件制造有限公司 A kind of compensation interior swollen plugging mechanism of radial compliance
CN109505978B (en) * 2018-12-29 2024-05-03 浙江德众汽车零部件制造有限公司 Radial flexible compensation type internal expansion plugging mechanism
CN115325252A (en) * 2022-08-12 2022-11-11 涌镇液压机械（上海）有限公司 Automatic regulating temp. control change valve

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