JP3170363B2 - Sphygmomanometer constant-speed exhaust valve device - Google Patents
Sphygmomanometer constant-speed exhaust valve deviceInfo
- Publication number
- JP3170363B2 JP3170363B2 JP26515892A JP26515892A JP3170363B2 JP 3170363 B2 JP3170363 B2 JP 3170363B2 JP 26515892 A JP26515892 A JP 26515892A JP 26515892 A JP26515892 A JP 26515892A JP 3170363 B2 JP3170363 B2 JP 3170363B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- valve body
- ring
- pressing body
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Magnetically Actuated Valves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、血圧測定時に一定の速
度で減圧させるために血圧計に用いられる定速排気弁装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant-speed exhaust valve device used for a sphygmomanometer to reduce the pressure at a constant speed when measuring blood pressure.
【０００２】[0002]
【従来の技術】血圧計は、上腕等に巻いたカフをエアポ
ンプで所定圧力に加圧し、動脈を圧迫して血流を一旦阻
血した後、カフ内の圧力を定速排気弁装置によって徐々
に降下させて最高血圧及び最低血圧を測定するように形
成されている。このような血圧計に用いられる定速排気
弁装置としては従来から各種のものが提供されている
が、例えば図３及び図４に示すものが本出願人によって
案出されている。2. Description of the Related Art In a sphygmomanometer, a cuff wound around an upper arm or the like is pressurized to a predetermined pressure by an air pump, and a blood flow is once blocked by compressing an artery. It is configured to lower and measure systolic and diastolic blood pressure. Various types of constant-speed exhaust valve devices have been conventionally used as such a sphygmomanometer, and for example, those shown in FIGS. 3 and 4 have been devised by the present applicant.
【０００３】この定速排気弁装置にあって、ゴム等の柔
軟な弾性材よりなる排気弁体１を両端が開口する円筒形
に形成し、その側面に軸方向に沿って図４に示すように
スリット２が設けてある。このスリット２は、カッター
ナイフ等の先端が鋭利な刃物で排気弁体１に軸方向の切
り込みを入れ内外に貫通させることによって形成される
のが一般的である。In this constant-speed exhaust valve device, an exhaust valve body 1 made of a soft elastic material such as rubber is formed in a cylindrical shape having both ends opened, and the side surface thereof is arranged along the axial direction as shown in FIG. Is provided with a slit 2. The slit 2 is generally formed by making a cut in the axial direction in the exhaust valve body 1 with a sharp knife such as a cutter knife and penetrating the exhaust valve body 1 in and out.
【０００４】そして定速排気弁装置の組立は、まず排気
弁体１をケース３内に挿入すると共に、外周の溝部２８
にＯリング１６を嵌合して取着した弁押圧体４をケース
３内に挿入してケース３の底面と弁押圧体４との間に排
気弁体１を配設し、次にバネ２９を挿入した後に、外周
の雄ねじ部３０をケース３の上部の開口縁の内周に設け
た雌ねじ３１に螺合して調圧ねじ３２をケース３に取り
付けることによっておこなうようにしてある。ケース３
の底部には血圧計のカフ及びエアポンプ（いずれも図示
省略）と連通する配管１１を接続するための導入口１２
が設けてあり、また排気弁体１の内周に形成される空間
は弁押圧体４の通気孔３３と調圧ねじ３２の排気孔３４
を通じて大気に連通させてある。In order to assemble the constant-speed exhaust valve device, first, the exhaust valve body 1 is inserted into the case 3 and the outer peripheral groove portion 28 is inserted.
The valve pressing body 4 with the O-ring 16 fitted and attached thereto is inserted into the case 3, and the exhaust valve body 1 is disposed between the bottom surface of the case 3 and the valve pressing body 4. Then, the external thread portion 30 on the outer periphery is screwed into the female screw 31 provided on the inner periphery of the upper opening edge of the case 3, and the pressure adjusting screw 32 is attached to the case 3. Case 3
An inlet 12 for connecting a pipe 11 communicating with a cuff of a sphygmomanometer and an air pump (both not shown) is provided at a bottom of the blood pressure monitor.
A space formed in the inner periphery of the exhaust valve body 1 is provided with a vent hole 33 of the valve pressing body 4 and an exhaust hole 34 of the pressure adjusting screw 32.
Through the atmosphere.
【０００５】このものにあって、調圧ねじ３２を回して
バネ２９を圧縮させることによって弁押圧体４で排気弁
体１の端面を押圧させると、排気弁体１はその両端面が
弁押圧体４とケース３の底面との間に挟圧されて軸方向
に圧縮され、この圧縮力によって排気弁体１はその軸方
向の中央部が膨らんだいわゆるビア樽型の形状になり、
この圧縮変形に伴って図４（ａ）に実線で図示するスリ
ット２が閉じた状態から、想像線で図示するようにスリ
ット２が開口される。このスリット２の開口量は調圧ね
じ３２を回して排気弁体１の押圧量を加減することによ
って調整することができるために、所定の排気速度を得
るための開口量の調節が可能になるものである。In this device, when the end face of the exhaust valve body 1 is pressed by the valve pressing body 4 by turning the pressure adjusting screw 32 to compress the spring 29, the exhaust valve body 1 The exhaust valve body 1 is sandwiched between the body 4 and the bottom surface of the case 3 and compressed in the axial direction. The compression force causes the exhaust valve body 1 to have a so-called via barrel shape in which the central portion in the axial direction is expanded.
With the compression deformation, the slit 2 is opened as shown by the imaginary line from the state where the slit 2 shown by the solid line in FIG. 4A is closed. Since the opening amount of the slit 2 can be adjusted by turning the pressure adjusting screw 32 to increase or decrease the pressing amount of the exhaust valve body 1, it is possible to adjust the opening amount to obtain a predetermined exhaust speed. Things.
【０００６】[0006]
【発明が解決しようとする課題】上記のような定速排気
弁装置にあって、排気弁体１は射出成形等をおこなうこ
とによって多数個取りの金型で成形されるものであり、
成形後はシート状の弾性体の表面に多数の円筒を一体に
屹立させた状態で金型から脱型して取り出し、各円筒を
シート状弾性体から円筒の下端面を切り離すことによっ
て、個々の排気弁体１に分離するようにしてある。従っ
て排気弁体１の一方の端面の外周部にはこの切り離しの
際にバリが部分的に生じることが多い。しかしこのよう
に排気弁体１の端面の外周部に部分的にバリが発生する
と、部分的なバリの影響で排気弁体１を圧縮する際の圧
縮力が排気弁体１の端面の全周に均一に作用せず、この
結果、排気弁体１に座屈が発生したりしてビア樽形状に
排気弁体１が変形しなくなってスリット２が所望のよう
に開口しなくなり、スリット２の開口量の調整を正確に
おこなうことができなくなって所望する排気速度を得る
ことができなくなるという問題があった。In the above-described constant-speed exhaust valve device, the exhaust valve body 1 is molded by a multi-cavity mold by performing injection molding or the like.
After the molding, a large number of cylinders are integrally raised on the surface of the sheet-like elastic body, removed from the mold in a state of being lifted, and each cylinder is separated from the sheet-like elastic body by cutting off the lower end face of the cylinder. The exhaust valve body 1 is separated. Therefore, burrs often occur partially on the outer peripheral portion of one end face of the exhaust valve body 1 at the time of this separation. However, when burrs are partially generated on the outer peripheral portion of the end face of the exhaust valve body 1 as described above, the compressive force generated when the exhaust valve body 1 is compressed by the influence of the partial burrs increases over the entire circumference of the end face of the exhaust valve body 1. As a result, buckling occurs in the exhaust valve body 1 and the exhaust valve body 1 does not deform into a via barrel shape, so that the slit 2 does not open as desired. There has been a problem that the adjustment of the opening amount cannot be performed accurately, and a desired pumping speed cannot be obtained.
【０００７】また、弁押圧体４には外周に設けた凹溝２
８にＯリング１６を嵌合して取着してあるが、このよう
な凹溝２８にＯリング１６をはめ込むにはＯリング１６
を大きく引き伸ばして弁押圧体４の外周に外嵌させるよ
うにしておこなう必要があり、Ｏリング１６の取り付け
が困難であるという問題もあった。本発明は上記の点に
鑑みてなされたものであり、スリットを確実に開口させ
て排気速度の調整を正確におこなうことができる血圧計
の定速排気弁装置を提供することを第一の目的とするも
のであり、また弁押圧体へのＯリングの取り付けを容易
におこなうことができるようにすることを第二の目的と
するものであり、加えて弁押圧体の組み立て作業を容易
におこなることができるようにすることを第三の目的と
するものである。The valve pressing member 4 has a concave groove 2 provided on the outer periphery.
Although the O-ring 16 is fitted to and attached to the groove 8, the O-ring 16 is fitted in such a groove 28.
Must be stretched greatly so that the O-ring 16 is fitted around the outer periphery of the valve pressing body 4, and there is a problem that it is difficult to attach the O-ring 16. The present invention has been made in view of the above points, and a first object of the present invention is to provide a constant-speed exhaust valve device for a sphygmomanometer capable of reliably opening a slit and accurately adjusting an exhaust speed. The second object is to make it possible to easily attach the O-ring to the valve pressing body, and also to easily perform the assembly work of the valve pressing body. The third purpose is to be able to become.
【０００８】[0008]
【課題を解決するための手段】本発明は、排気弁体１を
その端面から押圧することにより排気弁体１に設けたス
リット２の開口量を調節して排気速度を調節できるよう
にした血圧計の定速排気弁装置において、排気弁体１を
両端面が開口する筒状に形成すると共に排気弁体１の一
端面の外周に全周に亘るリブ１ａを設けて成ることを特
徴とするものである。According to the present invention, there is provided a blood pressure control apparatus in which the exhaust speed can be adjusted by pressing the exhaust valve body 1 from its end face to adjust the opening amount of a slit 2 provided in the exhaust valve body 1. In a constant-speed exhaust valve device, the exhaust valve body 1 is formed in a cylindrical shape having both open ends, and a rib 1a is provided over the entire outer circumference of one end face of the exhaust valve body 1. Things.
【０００９】また本発明にあって、排気弁体１の端面を
押圧する弁押圧体４を具備し、弁押圧体４の外周にＯリ
ング１６を嵌合取着すると共にＯリング１６が排気弁体
１と反対側へ移動するのを阻止するＯリング受け１６ａ
を弁押圧体４に設けるようにしてある。さらに本発明に
あって、弁押圧体４に弁押圧体４を回転させる方向で非
対称形の治具差込み穴８を設けるようにしてある。Further, in the present invention, there is provided a valve pressing body 4 for pressing an end face of the exhaust valve body 1, and an O-ring 16 is fitted and attached to the outer periphery of the valve pressing body 4, and the O-ring 16 is connected to the exhaust valve. O-ring receiver 16a for preventing movement to the opposite side of body 1
Is provided on the valve pressing body 4. Further, in the present invention, the jig insertion hole 8 is provided in the valve pressing body 4 in an asymmetric shape in a direction in which the valve pressing body 4 is rotated.
【００１０】[0010]
【作用】本発明にあって、両端面が開口する筒状に形成
した排気弁体１の一端面の外周に全周に亘るリブ１ａを
設けることによって、排気弁体１の一端面の外周には全
周に亘ってリブ１ａが存在しており、部分的にバリが生
じている場合のように部分的なバリの影響で排気弁体１
を圧縮する際の圧縮力が排気弁体１の端面の全周に均一
に作用しないということがなくなり、排気弁体１を圧縮
する際の圧縮力を排気弁体１の端面の全周に均一に作用
させてビア樽形状に排気弁体１を確実に変形させ、スリ
ット２を所望の大きさで開口させることができる。According to the present invention, a rib 1a is provided over the entire outer circumference of one end face of a cylindrical exhaust valve body 1 having both end faces open, so that the outer circumference of one end face of the exhaust valve body 1 is provided. Has a rib 1a over the entire circumference, and the exhaust valve body 1 is affected by partial burr as in the case where a burr is partially formed.
Is not uniformly applied to the entire circumference of the end face of the exhaust valve body 1, and the compression force when the exhaust valve body 1 is compressed is uniformly applied to the entire circumference of the end face of the exhaust valve body 1. , The exhaust valve body 1 is reliably deformed into a via barrel shape, and the slit 2 can be opened to a desired size.
【００１１】また本発明にあって、排気弁体１の端面を
押圧する弁押圧体４の外周にＯリング１６を嵌合取着す
ると共にＯリング１６が排気弁体１と反対側へ移動する
のを阻止するＯリング受け１６ａを弁押圧体４に設ける
ようにしているために、弁押圧体４には溝部を設けるよ
うな必要なくＯリング１６を取り付けることができ、Ｏ
リング１６を大きく引き伸ばすような必要なくＯリング
１６の取り付けをおこなうことができる。Further, in the present invention, an O-ring 16 is fitted and attached to the outer periphery of the valve pressing body 4 for pressing the end face of the exhaust valve body 1 and the O-ring 16 moves to the side opposite to the exhaust valve body 1. Since the O-ring receiver 16a is provided on the valve pressing body 4, the O-ring 16 can be attached to the valve pressing body 4 without having to provide a groove.
The O-ring 16 can be attached without the need to greatly expand the ring 16.
【００１２】さらに本発明にあって、弁押圧体４に弁押
圧体４を回転させる方向で非対称形の治具差込み穴８を
設けるようにしているために、治具差込み穴８に治具を
差し込んで回すことによって、弁押圧体４を所定の向き
に位置決めして組み立てをおこなうことがでできる。Further, in the present invention, since the jig insertion hole 8 which is asymmetrical in the direction in which the valve pressing body 4 is rotated is provided in the valve pressing body 4, the jig is inserted into the jig insertion hole 8. By inserting and turning, the valve pressing body 4 can be positioned in a predetermined direction and assembled.
【００１３】[0013]
【実施例】以下本発明を実施例によって詳述する。図１
及び図２は本発明の一実施例を示すものである。ケース
３は有底円筒状に形成されるものであり、底部の側部寄
り位置には血圧計のカフからの空気をケース３内に導入
する配管１１を接続するための導入口１２が設けてあ
る。このケース３の底面の中央には貫通孔１３が設けて
あり、貫通孔１３は周囲に４個の放射の凹部１３ａを設
けて略十字型に形成してある。またケース３の上端部の
開口縁の内面には雌ねじ部１４が形成してある。The present invention will be described below in detail with reference to examples. FIG.
FIG. 2 shows an embodiment of the present invention. The case 3 is formed in a cylindrical shape with a bottom, and an inlet 12 for connecting a pipe 11 for introducing air from the cuff of the sphygmomanometer into the case 3 is provided at a position near the bottom of the case. is there. A through-hole 13 is provided at the center of the bottom surface of the case 3, and the through-hole 13 is formed in a substantially cross shape by providing four radiation concave portions 13 a around the through-hole 13. A female screw 14 is formed on the inner surface of the opening edge at the upper end of the case 3.
【００１４】弁押圧体４は略円柱状に形成されるもので
あって、円柱部１５の外周にＯリング受け１６ａが全長
に亘って鍔状に張り出して突設してあり、円柱部１５の
外周にはＯリング受け１６ａの下側においてＯリング１
６が嵌合して取り付けるようにしてある。また円柱部１
５の下面の中央には円柱状の弁保持片１７を突出すると
共に弁保持片１７の下面にさらに弁保持片１７より径の
小さい通気用片１８が突出してある。弁保持片１７の外
径は排気弁体１の上端部の内径とほぼ等しい寸法に形成
してあり、通気用片１８の下端の外周には１８０°の角
度で背向するように一対の係合片１９が突設してある。
弁押圧体４の外周には雄ねじ部２０が設けてある。さら
に、円柱部１５の上部には上面で開口する治具差込み穴
８が設けてある。この治具差込み穴８は丸穴８ａとして
形成されるが、その内周の一か所に突片８ａを設けるこ
とによって、弁押圧体４を回転させる方向で非対称形の
穴８となるように形成してあり、差込み穴８に治具を差
し込んで治具に突片８ａを係止させることによって弁押
圧体４を回動操作することができるようにしてある。The valve pressing member 4 is formed in a substantially cylindrical shape, and an O-ring receiver 16a is provided on the outer periphery of the cylindrical portion 15 so as to protrude in a flange shape over the entire length thereof. On the outer periphery, an O-ring 1 is provided below the O-ring receiver 16a.
6 are fitted and attached. In addition, column part 1
A cylindrical valve holding piece 17 protrudes from the center of the lower surface of 5, and a ventilation piece 18 having a smaller diameter than the valve holding piece 17 protrudes from the lower surface of the valve holding piece 17. The outer diameter of the valve holding piece 17 is formed to be substantially equal to the inner diameter of the upper end of the exhaust valve body 1, and a pair of engaging members is formed on the outer circumference of the lower end of the ventilation piece 18 so as to face backward at an angle of 180 °. The joint piece 19 is provided in a protruding manner.
A male screw portion 20 is provided on the outer periphery of the valve pressing body 4. Further, a jig insertion hole 8 that opens on the upper surface is provided in an upper portion of the columnar portion 15. The jig insertion hole 8 is formed as a round hole 8a. By providing a protruding piece 8a at one location on the inner periphery thereof, the jig insertion hole 8 becomes an asymmetric hole 8 in the direction in which the valve pressing body 4 is rotated. The valve pressing body 4 can be rotated by inserting a jig into the insertion hole 8 and locking the protruding piece 8a to the jig.
【００１５】排気弁体１はゴム等の弾性体によって両端
が開口した略円筒状に形成してあり、その壁面の中央部
には長手方向（両端開口方向）に沿って切り込んでスリ
ット２が形成してある。また排気弁体１の一方の端面の
外周部には全周に亘るリブ１ａが鍔状に突設してある。
排気弁体１は射出成形等をおこなうことによって多数個
取りの金型で成形されるものであり、成形後はシート状
の弾性体の表面に多数の円筒を一体に屹立させた状態で
金型から脱型して取り出し、各円筒をシート状弾性体か
ら円筒の下端面を切り離すことによって、個々の排気弁
体１に分離するようにしてあるが、リブ１ａはシート状
弾性体から切り離す端部において設けるようにしてあ
る。従って排気弁体１の一方の端面の外周部に切り離し
の際にバリ生じてもバリはリブ１ａと一体化されること
になって、バリが排気弁体１の外周に部分的に生じるこ
とがなくなるものである。この排気弁体１は一端部を弁
押圧体４の弁保持片１７に嵌合して弁押圧体４に取着す
るようにしてあり、弁押圧体４をケース３内に取着する
ことによってケース３内に取り付けられるようにしてあ
る。The exhaust valve body 1 is formed in a substantially cylindrical shape having both ends opened by an elastic body such as rubber, and a slit 2 is formed at a center portion of a wall surface thereof by cutting along a longitudinal direction (opening directions at both ends). I have. Further, a rib 1a is provided on an outer peripheral portion of one end face of the exhaust valve body 1 in a flange shape over the entire periphery.
The exhaust valve body 1 is molded in a multi-cavity mold by performing injection molding or the like. After the molding, the mold is formed with a large number of cylinders integrally rising on the surface of a sheet-like elastic body. Each cylinder is separated from the sheet-like elastic body by separating the lower end surface of the cylinder from the sheet-like elastic body, so that the rib 1a is separated from the sheet-like elastic body by an end portion. Is provided. Therefore, even if burrs are formed on the outer peripheral portion of one end face of the exhaust valve body 1 when the burrs are formed, the burrs are integrated with the rib 1a, and the burrs may partially occur on the outer periphery of the exhaust valve body 1. Will be gone. One end of the exhaust valve body 1 is fitted to the valve holding piece 17 of the valve pressing body 4 and is attached to the valve pressing body 4. It is designed to be mounted in the case 3.
【００１６】調節ねじ体５は下面が開口する略カップ形
状に形成してあって、その外周には雄ねじとしてねじ部
６が、またその内周には雌ねじとしてねじ部７がそれぞ
れ設けてあり、調節ねじ体５の上面には調節ねじ体５を
回すための治具を差し込む六角孔形状の操作孔２５が上
下に開口させて貫通形成してある。操作孔２５は上記弁
押圧体４の差込み穴８よりも大きい寸法で形成してあ
る。この調節ねじ体５は、外周のねじ部６をケース３の
雌ねじ部１４に螺合すると共に内周のねじ部７を弁押圧
体４の雄ねじ部２０に螺合した状態で、ケース３に取り
付けるようにしてある。The adjusting screw body 5 is formed in a substantially cup shape with an open lower surface, and has a screw portion 6 as a male screw on the outer periphery thereof, and a screw portion 7 as a female screw on the inner periphery thereof. A hexagonal-shaped operation hole 25 into which a jig for turning the adjustment screw 5 is inserted is formed in the upper surface of the adjustment screw 5 so as to be opened vertically. The operation hole 25 is formed with a size larger than the insertion hole 8 of the valve pressing body 4. The adjusting screw 5 is attached to the case 3 in a state where the outer thread 6 is screwed into the female thread 14 of the case 3 and the inner thread 7 is screwed into the male thread 20 of the valve pressing body 4. It is like that.
【００１７】ここで、調節ねじ体５に設けた二つのねじ
部６，７はそれぞれ同じ回転方向で且つ異なるねじピッ
チで形成してある。例えばねじ部６をピッチＰ1 の右ね
じで形成し、ねじ部７をピッチＰ2 の右ねじで形成する
ものであり、この場合、ケース３の雌ねじ部１４はピッ
チＰ1 の右ねじで、弁押圧体４の雄ねじ部２０はピッチ
Ｐ2 の右ねじでそれぞれ形成されることになる。そして
調節ねじ体５を回すにあたって、調節ねじ体５を例えば
右に回すと、ねじ部６とケース３の雌ねじ部１４との螺
合によって調節ねじ体５はピッチＰ1 で下方（排気弁体
１側）に螺進する。また弁押圧体４は貫通孔１３の凹部
１３ａへの係合片１９の係合によって回り止めがなされ
ているために、調節ねじ体５を回すことによって弁押圧
体４の雄ねじ部２０はねじ部７に螺合されることにな
り、調節ねじ体５はピッチＰ2 で上方（排気弁体１と反
対側）に螺進することになる。従って調節ねじ体５を右
に回すと弁押圧体４は（Ｐ1 −Ｐ2 ）のピッチ差で排気
弁体１側へ移動することになり、Ｐ1 ＞Ｐ2 とし且つＰ
1 とＰ2 の差を小さくすることによって、調節ねじ体５
を回す角度に対する弁押圧体４の移動量を小さくするこ
とができ、調節ねじ体５の広い回動角度でスリット２の
開口量が少しづつ変化するように弁押圧体４の移動量を
調節することができることになり、所定の排気速度への
調節が容易になるものである。Here, the two screw portions 6 and 7 provided on the adjusting screw body 5 are formed in the same rotation direction and at different screw pitches. For example the threaded portion 6 formed in the right-hand screw pitch P 1, and forms a threaded portion 7 at right thread pitch P 2, in this case, the internal thread portion 14 of the case 3 is right hand thread pitch P 1, external thread portion 20 of the valve pressing body 4 will be formed respectively in the right thread pitch P 2. When the adjusting screw 5 is turned to the right, for example, when the adjusting screw 5 is turned, the adjusting screw 5 is pitched downward at a pitch P1 (exhaust valve 1 ) by screwing the screw portion 6 and the female screw portion 14 of the case 3. Side). Further, since the valve pressing body 4 is prevented from rotating by the engagement of the engaging piece 19 with the concave portion 13a of the through hole 13, turning the adjusting screw body 5 causes the external thread portion 20 of the valve pressing body 4 to be screwed. will be screwed to 7, the adjusting screw body 5 will be screwed upwards (exhaust valve member 1 and the opposite side) at a pitch P 2. Therefore, when the adjusting screw body 5 is turned clockwise, the valve pressing body 4 moves toward the exhaust valve body 1 with a pitch difference of (P 1 -P 2 ), so that P 1 > P 2 and P
By reducing the difference between 1 and P 2, the adjusting screw body 5
The amount of movement of the valve pressing member 4 with respect to the angle of turning can be reduced, and the amount of movement of the valve pressing member 4 is adjusted so that the opening amount of the slit 2 changes little by little with a wide rotation angle of the adjusting screw 5. Therefore, adjustment to a predetermined pumping speed is facilitated.
【００１８】次に、排気弁装置の組み立てについて説明
する。まずＯリング１６を弁押圧体４の円柱部１５の外
周にそのリング内径を拡張してはめ込んで取り付ける。
ここで、弁押圧体４の円柱部１５にはＯリング１６が上
方へずれるのを防止するＯリング受け１６ａが突設して
あるだけであるので、Ｏリング１６を大きく引き伸ばす
ような必要なく、円柱部１５の下端からＯリング１６を
差し入れるようにして容易に弁押圧体４にＯリング１６
を取り付けることができるものである。また排気弁体１
を弁押圧体４の弁保持片１７に被挿・嵌合して取り付け
る。排気弁体１の内径と弁保持片１７の外径とはほぼ等
しい寸法に形成してあるために、排気弁体１の内径を拡
張させる必要はない。尚、図１の実施例では排気弁体１
のリブ１ａが弁押圧体４の弁保持片１７側に位置する向
きで取り付けるようにしているが、必ずしもこの必要は
なく、リブ１ａと反対側の端面が弁保持片１７側に位置
するようにしてもよい。Next, the assembly of the exhaust valve device will be described. First, the O-ring 16 is mounted on the outer periphery of the cylindrical portion 15 of the valve pressing body 4 by expanding and fitting the inner diameter of the ring.
Here, since only the O-ring receiver 16a for preventing the O-ring 16 from shifting upward is provided on the cylindrical portion 15 of the valve pressing body 4, there is no need to extend the O-ring 16 greatly. The O-ring 16 is easily inserted into the valve pressing body 4 by inserting the O-ring 16 from the lower end of the cylindrical portion 15.
Can be attached. Exhaust valve element 1
Is fitted and fitted to the valve holding piece 17 of the valve pressing body 4. Since the inner diameter of the exhaust valve body 1 and the outer diameter of the valve holding piece 17 are formed to be substantially equal in size, it is not necessary to expand the inner diameter of the exhaust valve body 1. In the embodiment shown in FIG.
The rib 1a is mounted in a direction in which the rib 1a is located on the valve holding piece 17 side of the valve pressing body 4. However, this is not always necessary, and the end face opposite to the rib 1a is positioned on the valve holding piece 17 side. You may.
【００１９】このように弁押圧体４にＯリング１６と排
気弁体１を取り付けた状態で、弁押圧体４をケース３内
にその上端の開口から差し込むことによって取着する
が、このとき、弁押圧体４の通気用片１８の下端に設け
た一対の係合片１９が貫通孔１３の４個の凹部１３ａの
うちの２個の凹部１３ａに係合されるように最大９０°
の角度で弁押圧体４を水平に回して、通気用片１８の下
端部を貫通孔１３に差し込むようにしてある。このよう
に弁押圧体４を組み立てる際に回動させる操作は、弁押
圧体４の差込み穴８に突片８ｂに嵌合する治具を差し込
んでおこなうことができる。貫通孔１３の４個の凹部１
３ａのうち２個の凹部１３ａにはこのように係合片１９
が係合されるが、凹部１３ａは排気口２３として開口し
ている。With the O-ring 16 and the exhaust valve body 1 attached to the valve pressing body 4 as described above, the valve pressing body 4 is attached by inserting the valve pressing body 4 into the case 3 from the opening at the upper end thereof. A maximum of 90 ° so that a pair of engagement pieces 19 provided at the lower end of the ventilation piece 18 of the valve pressing body 4 is engaged with two of the four recesses 13 a of the through hole 13.
At this angle, the valve pressing body 4 is turned horizontally so that the lower end of the ventilation piece 18 is inserted into the through hole 13. In this manner, the operation of rotating the valve pressing body 4 when assembling can be performed by inserting a jig fitted to the projecting piece 8b into the insertion hole 8 of the valve pressing body 4. Four recesses 1 of through hole 13
In this way, two of the recesses 13a of the 3a
, But the recess 13 a is open as the exhaust port 23.
【００２０】さらに操作孔２５に治具を差し込んで調節
ねじ体５を保持しつつ、調節ねじ体５の外周のねじ部６
とケース３の雌ねじ部１４とを螺合させて結合した後、
調節ねじ体５をピッチＰ1 で螺進させて調節ねじ体５の
内周のねじ部７を弁押圧体４の外周の雄ねじ部２０に螺
合させると、弁押圧体４は既述のようにＰ1 −Ｐ2 のピ
ッチ差で排気弁体１側へ螺進して移動する。このように
弁押圧体４が排気弁体１側へ移動する際に弁押圧体４の
外周に取り付けたＯリング１６もＯリング受け１６ａに
よって押し下げられて排気弁体１側へ移動する。またこ
のように弁押圧体４が排気弁体１側へ移動することによ
って、排気弁体１はその両端面が弁押圧体４とケース３
の底面との間で圧縮力を受け、図１（ａ）にみられるよ
うに排気弁体１は軸方向の中央部がビア樽のように膨ら
む変形を受け、この変形に伴ってスリット２を開口させ
ることができるものである。この開口量は弁押圧体４の
移動量に応じた排気弁体１の変形量で調節することがで
きるものであり、所望する排気速度に任意に調整するこ
とができるものである。Further, while holding the adjusting screw 5 by inserting a jig into the operation hole 25, the screw portion 6 on the outer periphery of the adjusting screw 5 is held.
And the female screw part 14 of the case 3 are screwed together and connected,
When the adjusting screw 5 is threaded at the pitch P 1 to screw the inner thread 7 of the adjusting screw 5 with the external thread 20 of the outer periphery of the valve pressing body 4, the valve pressing body 4 becomes as described above. At a pitch difference of P 1 -P 2 to move toward the exhaust valve body 1 side. When the valve pressing body 4 moves toward the exhaust valve body 1 in this manner, the O-ring 16 attached to the outer periphery of the valve pressing body 4 is also pushed down by the O-ring receiver 16a and moves toward the exhaust valve body 1. Also, as the valve pressing body 4 moves toward the exhaust valve body 1 in this manner, the exhaust valve body 1 has its both end faces in contact with the valve pressing body 4 and the case 3.
1A, the exhaust valve body 1 undergoes a deformation in which the central portion in the axial direction expands like a via barrel, and as a result, the slit 2 is formed. It can be opened. The opening amount can be adjusted by the deformation amount of the exhaust valve body 1 according to the moving amount of the valve pressing body 4, and can be arbitrarily adjusted to a desired exhaust speed.
【００２１】ここで、上記のように排気弁体１の一端面
の外周に全周に亘るリブ１ａを設けることによって、バ
リが排気弁体１の外周に部分的に生じることがなくなる
ようにしてあり、従って部分的にバリが生じている場合
のように部分的なバリの影響で排気弁体１を圧縮する際
の圧縮力が排気弁体１の端面の全周に均一に作用しない
ということがなくなり、排気弁体１を圧縮する際の圧縮
力を排気弁体１の端面の全周に均一に作用させてビア樽
形状に排気弁体１を確実に変形させ、スリット２を所望
の大きさで開口させることができるものである。また、
このように排気弁体１の上端の外周にリブ１ａを設ける
ことによって、弁押圧体４の下端面の押圧面の外径はリ
ブ１ａを設けた排気弁体１の外径よりも小さくなり、排
気弁体１の上端面はその内周部のみが弁押圧体４の下端
面で押圧されることになり、排気弁体１の外周のバリに
よる影響を受けることがなくなると共に、排気弁体１に
はその内周部の方が外周部よりも強い押圧力が作用し、
排気弁体１の軸方向中心部の外周部が外方へ押し広げる
ように押圧力が働いて排気弁体１をビア樽形状に確実に
変形させることができるものである。Here, by providing the rib 1a over the entire circumference on one end face of the exhaust valve body 1 as described above, burrs are prevented from being partially generated on the outer circumference of the exhaust valve body 1. Yes, and therefore, the compression force when compressing the exhaust valve body 1 is not uniformly applied to the entire circumference of the end face of the exhaust valve body 1 due to the effect of partial burr as in the case where partial burr occurs. The compression force when compressing the exhaust valve body 1 is uniformly applied to the entire periphery of the end face of the exhaust valve body 1 to surely deform the exhaust valve body 1 into a via barrel shape, and to make the slit 2 a desired size. It can be opened with the above. Also,
By providing the rib 1a on the outer periphery of the upper end of the exhaust valve body 1 in this manner, the outer diameter of the pressing surface of the lower end surface of the valve pressing body 4 becomes smaller than the outer diameter of the exhaust valve body 1 provided with the rib 1a, Only the inner peripheral portion of the upper end surface of the exhaust valve body 1 is pressed by the lower end surface of the valve pressing body 4 so that the outer peripheral surface of the exhaust valve body 1 is not affected by burrs and the exhaust valve body 1 is not affected. Has a stronger pressing force on the inner periphery than on the outer periphery.
The pressing force acts so that the outer peripheral portion of the central portion in the axial direction of the exhaust valve body 1 is pushed outward, so that the exhaust valve body 1 can be surely deformed into a via barrel shape.
【００２２】また、排気速度を調節する際に、調節ねじ
体５を螺進させ過ぎて弁押圧体４を排気弁体１側へ移動
させ過ぎた場合には、調節ねじ体５を逆回動させて弁押
圧体４を排気弁体１と反対側へ移動させるように再調節
をおこなうが、弁押圧体４を排気弁体１と反対側へ移動
させると、Ｏリング受け１６ａはＯリング１６の排気弁
体１と反対側に設けられており、またＯリング１６の内
周と弁押圧体４の外周との摩擦力よりもＯリング１６の
外周とケース３の内周との摩擦力が大きいために、Ｏリ
ング１６は残されたまま弁押圧体４のみが排気弁体１と
反対側へ移動することになる。Ｏリング１６の取り付け
を容易におこなうことができるように溝部を設けずＯリ
ング受け１６ａのみを設けることによって、このように
弁押圧体４が排気弁体１側へ押し込まれる方向への動き
に対してはＯリング１６は弁押圧体４とともに排気弁体
１側へ移動すると共に、弁押圧体４が排気弁体１と反対
側へ引き上げられる方向の動きに対してはＯリング１６
は追随せず移動しないようになるが、Ｏリング１６を外
嵌する排気弁体１の円柱部１５の移動方向の長さを再調
整する際の排気弁体１の移動長さに対して十分長く取っ
ておくことによって、Ｏリング１６が排気弁体１から脱
落することはなく、Ｏリング１６によるシール性が損な
われることはない。In adjusting the exhaust speed, if the adjusting screw 5 is excessively advanced and the valve pressing member 4 is excessively moved toward the exhaust valve 1, the adjusting screw 5 is rotated in the reverse direction. The valve presser 4 is moved again to the side opposite to the exhaust valve body 1 so that the O-ring receiver 16a moves to the O-ring 16 when the valve presser 4 is moved to the side opposite to the exhaust valve body 1. And the frictional force between the outer periphery of the O-ring 16 and the inner periphery of the case 3 is smaller than the frictional force between the inner periphery of the O-ring 16 and the outer periphery of the valve pressing body 4. Because of the large size, only the valve pressing body 4 moves to the opposite side to the exhaust valve body 1 with the O-ring 16 remaining. By providing only the O-ring receiver 16a without providing a groove so that the O-ring 16 can be easily attached, it is possible to prevent the valve pressing body 4 from moving in the direction of being pushed into the exhaust valve body 1 side. The O-ring 16 moves to the exhaust valve body 1 side together with the valve pressing body 4, and the O-ring 16 does not move in the direction in which the valve pressing body 4 is pulled up to the side opposite to the exhaust valve body 1.
Does not follow and does not move, but is not enough for the moving length of the exhaust valve body 1 when the length in the moving direction of the cylindrical portion 15 of the exhaust valve body 1 on which the O-ring 16 is fitted is readjusted. By keeping it long, the O-ring 16 does not fall off from the exhaust valve body 1 and the sealing performance of the O-ring 16 is not impaired.
【００２３】次に、本発明に係る定速排気弁装置の動作
について説明する。まずエアポンプ（図示省略）によっ
てカフを所定圧力まで加圧させた後にエアポンプを停止
させると、カフ内の高圧の空気は配管１１を通ってケー
ス３の導入口１２に導かれ、排気弁体４の外周とケース
３の内周との間に形成される空気室３７内に流入する。
空気室３７の上面は弁押圧体４に設けられたＯリング１
６によって気密性が保持されており、排気弁体１の上下
両端と空気室３７との気密性も排気弁体１が弁押圧体４
とケース３に押圧されていることによって保持されてい
る。従って、空気室３７に至った高圧空気はスリット２
の開口のみを通って排気弁体１の内側に至り、排気口２
３から排気されるが、排気弁体１の内側は排気口２３に
よって外部と連通しているために圧力は大気圧と等しく
なっている。このために高圧空気が流入する空気室３７
と排気弁体１の内側との間には圧力差が生じるが、この
圧力差はスリット２の開口を閉じる方向の力として働
き、空気室３７に至る空気の圧力が高いときにはスリッ
ト２の開口は小さくなって開口を通過できる空気流が減
少するというように定速排気特性を得ることができるも
のである。Next, the operation of the constant-speed exhaust valve device according to the present invention will be described. When the air pump is stopped after the cuff is pressurized to a predetermined pressure by an air pump (not shown), the high-pressure air in the cuff is guided to the inlet 12 of the case 3 through the pipe 11, It flows into the air chamber 37 formed between the outer circumference and the inner circumference of the case 3.
The upper surface of the air chamber 37 is provided with an O-ring 1 provided on the valve pressing body 4.
The airtightness between the upper and lower ends of the exhaust valve body 1 and the air chamber 37 is maintained by the exhaust valve body 1 by the valve pressing body 4.
And is held by the case 3 being pressed. Therefore, the high-pressure air that has reached the air chamber 37 is
To the inside of the exhaust valve body 1 through only the opening
3, the pressure is equal to the atmospheric pressure because the inside of the exhaust valve body 1 is communicated with the outside through the exhaust port 23. For this purpose, the air chamber 37 into which the high-pressure air flows
A pressure difference is generated between the pressure and the inside of the exhaust valve body 1, and this pressure difference acts as a force in the direction of closing the opening of the slit 2. When the pressure of the air reaching the air chamber 37 is high, the opening of the slit 2 The constant-speed exhaust characteristic can be obtained such that the air flow that can be reduced and becomes smaller through the opening decreases.
【００２４】[0024]
【発明の効果】上記のように本発明は、排気弁体をその
端面から押圧することにより排気弁体に設けたスリット
の開口量を調節して排気速度を調節できるようにした血
圧計の定速排気弁装置において、排気弁体を両端面が開
口する筒状に形成すると共に排気弁体の一端面の外周に
全周に亘るリブを設けるようにしたので、排気弁体の一
端面の外周には全周に亘ってリブが存在しており、部分
的にバリが生じている場合のように部分的なバリの影響
で排気弁体を圧縮する際の圧縮力が排気弁体の端面の全
周に均一に作用しないということがなくなるものであ
り、排気弁体を圧縮する際の圧縮力を排気弁体の端面の
全周に均一に作用させてビア樽形状に排気弁体を確実に
変形させ、スリットを確実に開口させて排気速度の調整
を正確におこなうことができるものである。As described above, the present invention provides a sphygmomanometer in which the exhaust valve can be adjusted by adjusting the opening amount of a slit provided in the exhaust valve by pressing the exhaust valve from its end face. In the fast exhaust valve device, the exhaust valve body is formed in a cylindrical shape with both end faces open, and a rib is provided on the outer circumference of one end face of the exhaust valve body, so that the outer circumference of one end face of the exhaust valve body is provided. Has a rib over the entire circumference, and the compression force when compressing the exhaust valve body due to the effect of partial burr as in the case where partial burr occurs This eliminates the fact that the exhaust valve does not act uniformly on the entire circumference, so that the compression force when compressing the exhaust valve is applied uniformly to the entire circumference of the end face of the exhaust valve to ensure that the exhaust valve has a via barrel shape. Deformation and accurate opening of the exhaust speed by opening the slit securely It is those that can.
【００２５】また本発明は、排気弁体の端面を押圧する
弁押圧体の外周にＯリングを嵌合取着すると共にＯリン
グが排気弁体と反対側へ移動するのを阻止するＯリング
受けを弁押圧体に設けたので、弁押圧体には溝部を設け
るような必要なくＯリングを取り付けることができるも
のであり、Ｏリングを大きく引き伸ばすような必要なく
弁押圧体へのＯリングの取り付けを容易におこなうこと
ができるものである。According to the present invention, an O-ring is fitted to and attached to an outer periphery of a valve pressing body for pressing an end face of an exhaust valve body, and an O-ring receiver for preventing the O-ring from moving to the side opposite to the exhaust valve body. Is provided on the valve pressing body, so that the O-ring can be mounted on the valve pressing body without having to provide a groove, and the O-ring is mounted on the valve pressing body without having to greatly expand the O-ring. Can be easily performed.
【００２６】さらに本発明は、弁押圧体に弁押圧体を回
転させる方向で非対称形の治具差込み穴を設けたので、
治具差込み穴に治具を差し込んで回すことによって、弁
押圧体を所定の向きに位置決めして組み立てをおこなう
ことができるものであり、弁押圧体の組み立て作業を容
易におこなうことができるものである。Further, according to the present invention, a jig insertion hole which is asymmetric in the direction in which the valve pressing body is rotated is provided in the valve pressing body.
By inserting a jig into the jig insertion hole and turning it, the valve pressing body can be positioned in a predetermined direction and assembled, and the assembling work of the valve pressing body can be easily performed. is there.
【図１】本発明の一実施例を示すものであり、（ａ）は
断面図、（ｂ）は底面図である。FIGS. 1A and 1B show an embodiment of the present invention, in which FIG. 1A is a sectional view and FIG. 1B is a bottom view.
【図２】同上の実施例の分解斜視図である。FIG. 2 is an exploded perspective view of the embodiment.
【図３】従来例を示すものであり、（ａ）は断面図、
（ｂ）は底面図である。FIG. 3 shows a conventional example, in which (a) is a sectional view,
(B) is a bottom view.
【図４】従来例の排気弁体を示すものであり、（ａ）は
斜視図、（ｂ）は断面図である。4A and 4B show a conventional exhaust valve body, in which FIG. 4A is a perspective view and FIG. 4B is a sectional view.
１ 排気弁体 １ａ リブ ２ スリット ４ 弁押圧体 １６ Ｏリング １６ａ Ｏリング受け DESCRIPTION OF SYMBOLS 1 Exhaust valve body 1a Rib 2 Slit 4 Valve pressing body 16 O-ring 16a O-ring receiver
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−14321（ＪＰ，Ａ) 特開 昭60−116329（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) A61B 5/02 - 5/0295 F16K 7/00 - 33/00 F16K 39/00 - 51/02 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-14321 (JP, A) JP-A-60-116329 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) A61B 5/02-5/0295 F16K 7/00-33/00 F16K 39/00-51/02
Claims (3)
より排気弁体に設けたスリットの開口量を調節して排気
速度を調節できるようにした血圧計の定速排気弁装置に
おいて、排気弁体を両端面が開口する筒状に形成すると
共に排気弁体の一端面の外周に全周に亘るリブを設けて
成ることを特徴とする血圧計の定速排気弁装置。1. A constant-speed exhaust valve device for a blood pressure monitor in which an exhaust valve is pressed from an end face thereof to adjust an opening amount of a slit provided in the exhaust valve to adjust an exhaust speed. A constant-speed exhaust valve device for a sphygmomanometer, wherein the body is formed in a cylindrical shape having both open ends, and a rib is provided on an outer periphery of one end surface of the exhaust valve body over the entire circumference.
備し、弁押圧体の外周にＯリングを嵌合取着すると共に
Ｏリングが排気弁体と反対側へ移動するのを阻止するＯ
リング受けを弁押圧体に設けて成ることを特徴とする請
求項１に記載の血圧計の定速排気弁装置。2. An exhaust valve body comprising a valve pressing body for pressing an end face thereof, wherein an O-ring is fitted and attached to the outer periphery of the valve pressing body and prevents the O-ring from moving to the side opposite to the exhaust valve body. O
The constant-speed exhaust valve device for a sphygmomanometer according to claim 1, wherein a ring receiver is provided on the valve pressing body.
非対称形の治具差込み穴を設けて成ることを特徴とする
請求項１又は２に記載の血圧計の定速排気弁装置。3. The constant-speed exhaust valve device for a sphygmomanometer according to claim 1, wherein a jig insertion hole that is asymmetrical in a direction in which the valve pressing body is rotated is provided in the valve pressing body.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26515892A JP3170363B2 (en) | 1992-10-02 | 1992-10-02 | Sphygmomanometer constant-speed exhaust valve device |
| US08/033,740 US5323806A (en) | 1992-03-26 | 1993-03-22 | Constant-speed exhaust valve device for hemadynamometer |
| DE19934309783 DE4309783C2 (en) | 1992-03-26 | 1993-03-25 | Outlet valve device with constant outlet speed for a blood pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26515892A JP3170363B2 (en) | 1992-10-02 | 1992-10-02 | Sphygmomanometer constant-speed exhaust valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06114017A JPH06114017A (en) | 1994-04-26 |
| JP3170363B2 true JP3170363B2 (en) | 2001-05-28 |
Family
ID=17413432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26515892A Expired - Lifetime JP3170363B2 (en) | 1992-03-26 | 1992-10-02 | Sphygmomanometer constant-speed exhaust valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3170363B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7753618B2 (en) * | 2007-06-28 | 2010-07-13 | Calera Corporation | Rocks and aggregate, and methods of making and using the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015209953A1 (en) * | 2015-05-29 | 2016-12-01 | Robert Bosch Gmbh | Valve with a venting element |
-
1992
- 1992-10-02 JP JP26515892A patent/JP3170363B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7753618B2 (en) * | 2007-06-28 | 2010-07-13 | Calera Corporation | Rocks and aggregate, and methods of making and using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06114017A (en) | 1994-04-26 |
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