JP3024858B2 - Sphygmomanometer constant-speed exhaust valve device - Google Patents
Sphygmomanometer constant-speed exhaust valve deviceInfo
- Publication number
- JP3024858B2 JP3024858B2 JP4103375A JP10337592A JP3024858B2 JP 3024858 B2 JP3024858 B2 JP 3024858B2 JP 4103375 A JP4103375 A JP 4103375A JP 10337592 A JP10337592 A JP 10337592A JP 3024858 B2 JP3024858 B2 JP 3024858B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- screw
- case
- valve
- adjusting screw
- 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)
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】オシロメトリック血圧計は、上腕に巻い
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、動脈拍動に伴うカフ内圧及
び振動振幅のパターンをマイクロコンピュータで処理
し、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。この血圧計に用いられる定速排気弁装置の特性
は、カフ内圧力を３〜４ｍｍＨｇ／ｓｅｃ程度の一定の
速度で時間と共に直線的に降下させるものが好ましい。2. Description of the Related Art In an oscillometric sphygmomanometer, a cuff wound on an upper arm is pressurized to a predetermined pressure by an air pump, and a blood flow is once blocked by compressing an artery. The system is configured to measure the systolic blood pressure and the diastolic blood pressure by processing the pattern of the cuff internal pressure and the vibration amplitude accompanying the arterial pulsation by a microcomputer. The characteristic of the constant-speed exhaust valve device used in this sphygmomanometer is preferably that the pressure inside the cuff decreases linearly with time at a constant speed of about 3 to 4 mmHg / sec.
【０００３】このような定速排気弁装置として、実公昭
６３−１４８０９号公報において提供されているものが
ある。実公昭６３−１４８０９号公報で提供される定速
排気弁装置は図５に示すように、ケース３内に長手方向
に沿ってスリット２を設けた弾性材料からなる有底筒状
あるいはカップ状の排気弁体１を取り付けると共に、こ
の排気弁体１の開口側の端面に先端を当接させた調節ね
じ体５をケース３内に螺合させることによって形成され
ているものであり、調節ねじ体５を回すことによって排
気弁体１側に螺進させて、調節ねじ体５で排気弁体１を
押圧して変形させることで図６（ａ）のようにスリット
２が閉じた状態から図６（ｂ）のようにスリット２を開
口させるようにし、このスリット２の開口を通してカフ
内の空気を排気することができるようにしてある。そし
てこのものでは調節ねじ体５を回す量を調節して排気弁
体１を押圧する力を調節することによって図６（ｃ）の
ようにスリット３の開口量を調節し、排気速度を調節し
てカフ内圧力を所定の降下速度に調節することができ
る。[0003] As such a constant speed exhaust valve device, there is one provided in Japanese Utility Model Publication No. 63-14809. As shown in FIG. 5, a constant-speed exhaust valve device provided in Japanese Utility Model Publication No. 63-14809 has a bottomed cylindrical or cup-like shape made of an elastic material in which a slit 2 is provided in a case 3 along a longitudinal direction. The adjusting screw body 5 is formed by attaching the exhaust valve body 1 and screwing an adjusting screw body 5 having an end abutting on the end face on the opening side of the exhaust valve body 1 into the case 3. The screw 2 is screwed toward the exhaust valve body 1 by turning it, and the exhaust valve body 1 is pressed and deformed by the adjusting screw body 5 so that the slit 2 is closed from the state shown in FIG. As shown in (b), the slit 2 is opened, and the air in the cuff can be exhausted through the opening of the slit 2. In this apparatus, the amount of turning the adjusting screw body 5 is adjusted to adjust the force for pressing the exhaust valve body 1 to adjust the opening amount of the slit 3 as shown in FIG. Thus, the pressure in the cuff can be adjusted to a predetermined descent speed.
【０００４】このように調節ねじ体５を回して締めたり
緩めたりすることによって調節ねじ体５の先端が排気弁
体１を押圧する力を変え、スリット２の開口量を増減さ
せることによってＰ−Ｑ特性を調節することができるも
のである。[0004] By turning and tightening or loosening the adjusting screw 5 in this manner, the force of the tip of the adjusting screw 5 pressing the exhaust valve body 1 is changed, and the opening amount of the slit 2 is increased and decreased to increase or decrease P-. The Q characteristic can be adjusted.
【０００５】[0005]
【発明が解決しようとする課題】しかし図５の定速排気
弁装置では調節ねじ体５を回した際に調節ねじ体５が螺
進あるいは螺退する変位の変化量がそのまま排気弁体１
に加わる力の変化となる。従って、調節ねじ体５をわず
かに回しただけでも排気弁体１に加わる力が大きく変化
してスリット２の開口量が大きく変化してしまうことに
なり、調節ねじ体５を回す角度範囲が狭くなって調節作
業が難しいという問題があった。However, in the constant-speed exhaust valve device shown in FIG. 5, when the adjusting screw 5 is turned, the amount of change in the displacement of the adjusting screw 5 to advance or retreat is directly changed to the exhaust valve 1.
Changes in the force applied to the Therefore, even if the adjusting screw 5 is slightly turned, the force applied to the exhaust valve body 1 changes greatly, and the opening amount of the slit 2 changes greatly, and the angle range in which the adjusting screw 5 is turned is narrowed. There was a problem that adjustment work was difficult.
【０００６】このために、排気弁体１を大きく変形させ
ることによってスリット２の所定の開口量が得られるよ
うに形成したものがあるが、この場合には逆に調節ねじ
体５を何回も回転させないとスリット２の開口量を調節
することができなくなるために、調節に時間を要すると
いう問題があった。また、カフ内圧力の降下速度を速く
するために、調節ねじ体５を締めて排気弁体１のスリッ
ト２の開口量を大きくする場合には、排気弁体１は調節
ねじ体５から押圧力を受けるために強制的に変形させら
れることになって所定の開口量に調節することができる
が、逆にカフ内圧力の降下速度を遅くするために、調節
ねじ体５を緩める場合には、調節ねじ体５は排気弁体１
から離れるだけで排気弁体１を変形させる力を与えない
ので、排気弁体１の変形はそれ自身の弾性力のみでおこ
なわれることになる。従って排気弁体１の弾性力が弱く
なっていると、排気弁体１の変形が不十分になってスリ
ット２の開口量を所定量に調節することができなかった
り、開口量が調節の度に変化したり、調節した後開口量
が変化したりして、排気速度の調節の精度が悪くなると
いう問題があった。For this purpose, there is a structure in which a predetermined opening amount of the slit 2 is obtained by largely deforming the exhaust valve body 1. In this case, however, the adjusting screw body 5 is conversely made many times. If the rotation is not performed, the opening amount of the slit 2 cannot be adjusted, so that there is a problem that it takes time for the adjustment. When the adjusting screw 5 is tightened to increase the opening amount of the slit 2 of the exhaust valve body 1 in order to increase the rate of decrease in the pressure in the cuff, the exhaust valve body 1 is pressed from the adjusting screw body 5 with a pressing force. However, when the adjusting screw 5 is loosened to slow down the pressure drop in the cuff, it is possible to adjust the opening amount to a predetermined amount. The adjusting screw 5 is the exhaust valve 1
The exhaust valve body 1 is deformed only by its own elastic force because it does not give a force to deform the exhaust valve body 1 merely by moving away from the exhaust valve body 1. Therefore, when the elastic force of the exhaust valve body 1 is weak, the exhaust valve body 1 is insufficiently deformed, so that the opening amount of the slit 2 cannot be adjusted to a predetermined amount, or the opening amount is adjusted every time. Or the amount of opening changes after the adjustment, so that the accuracy of the adjustment of the exhaust speed is deteriorated.
【０００７】本発明は上記の点に鑑みてなされたもので
あり、所定の排気速度への調節を容易におこうなうこと
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
の目的とし、所定の排気速度への調節を迅速におこなう
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
第二の目的とし、所定の排気速度への調節を精度良くお
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
ことを第三の目的とするものである。The present invention has been made in view of the above points, and it is a first object of the present invention to provide a constant-speed exhaust valve device for a sphygmomanometer capable of easily adjusting a predetermined exhaust speed. The second object of the present invention is to provide a constant-speed exhaust valve device for a sphygmomanometer capable of quickly adjusting to a predetermined pumping speed, and to precisely adjust to a predetermined pumping speed. A third object is to provide a constant-speed exhaust valve device for a sphygmomanometer that can be used.
【０００８】[0008]
【課題を解決するための手段】本発明は、排気弁体１を
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、ケース３内に排気弁体１及
び排気弁体１を押圧するための弁押圧体４を配設すると
共に弁押圧体４を押し引き操作するための調節ねじ体５
をケース３に設け、調節ねじ体５に同じ回転方向で且つ
ねじピッチが異なる二つのねじ部６，７を設け、一方の
ねじ部６をケース３に螺合させると共に他方のねじ部７
を弁押圧体４に螺合させ、弁押圧体４と排気弁体１の一
方の作用端１ａを結合させると共にケース３と排気弁体
４の他方の作用端１ｂを結合させ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 sphygmomanometer in which the exhaust speed can be adjusted by adjusting the opening amount of a slit 2 provided in the exhaust valve body 1 by pressing the exhaust valve body 1. In the fast exhaust valve device, an exhaust valve element 1 and a valve pressing element 4 for pressing the exhaust valve element 1 are disposed in a case 3 and an adjusting screw element 5 for pushing and pulling the valve pressing element 4.
Is provided on the case 3, the adjusting screw body 5 is provided with two screw portions 6 and 7 having the same rotation direction and different screw pitches, and one of the screw portions 6 is screwed into the case 3 and the other screw portion 7 is provided.
Is screwed into the valve pressing body 4 and one of the valve pressing body 4 and the exhaust valve body 1 is screwed.
And the case 3 and the exhaust valve body.
4 in which the other working end 1b is connected .
【０００９】また本発明は、排気弁体１を押圧すること
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、ケース３内に排気弁体１及び排気弁体１
を押圧するための弁押圧体４を配設すると共に弁押圧体
４を押し引き操作するための調節ねじ体５をケース３に
設け、調節ねじ体５に同じ回転方向で且つねじピッチが
異なる二つのねじ部６，７を設け、調節ねじ体５に逆の
回転方向で二つのねじ部６，７を設け、一方のねじ部６
をケース３に螺合させると共に他方のねじ部７を弁押圧
体４に螺合させるようにしてもよい。さらに本発明は、
かかる血圧計の定速排気弁装置において、弁押圧体４と
排気弁体１の一方の作用端１ａを結合させると共にケー
ス３と排気弁体４の他方の作用端１ｂを結合させて成る
ことを特徴とするものである。Further, according to the present invention, the exhaust valve body 1 is pressed.
To adjust the opening amount of the slit 2 provided in the exhaust valve body 1
Sphygmomanometer constant-speed exhaust valve with adjustable exhaust speed
In the device, the exhaust valve element 1 and the exhaust valve element 1
And a valve pressing body 4 for pressing the valve.
Adjustment screw 5 for pushing and pulling 4 into case 3
And the adjusting screw body 5 has the same rotation direction and screw pitch.
Two different screw portions 6 and 7 are provided, and two screw portions 6 and 7 are provided on the adjusting screw body 5 in opposite rotation directions.
May be screwed into the case 3 and the other screw portion 7 is screwed into the valve pressing body 4. Furthermore, the present invention
In such a constant-speed exhaust valve device for a sphygmomanometer, the valve pressing body 4 and one working end 1a of the exhaust valve body 1 are connected, and the case 3 and the other working end 1b of the exhaust valve body 4 are connected. It is a feature.
【００１０】[0010]
【作用】調節ねじ体５を回して螺進あるいは螺退させて
弁押圧体４を押し引き操作し、弁押圧体４による排気弁
体１への押圧力を調節するにあたって、調節ねじ体５に
同じ回転方向で且つねじピッチが異なる二つのねじ部
６，７を設け、一方のねじ部６をケース３に螺合させる
と共に他方のねじ部７を弁押圧体４に螺合させるように
することによって、弁押圧体４の移動量はケース３に対
する調節ねじ体５の移動量と調節ねじ体５に対する弁押
圧体４の移動量の差になり、調節ねじ体５に設けた二つ
のねじ部６，７のねじピッチ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る。In order to adjust the pressing force of the valve pressing body 4 against the exhaust valve body 1 by turning the adjusting screw body 5 to advance or retreat the screw, the adjusting screw body 5 Two screw portions 6 and 7 having the same rotation direction and different screw pitches are provided, and one screw portion 6 is screwed to the case 3 and the other screw portion 7 is screwed to the valve pressing body 4. Accordingly, the amount of movement of the valve pressing body 4 is the difference between the amount of movement of the adjusting screw body 5 with respect to the case 3 and the amount of movement of the valve pressing body 4 with respect to the adjusting screw body 5, and the two screw portions 6 provided on the adjusting screw body 5 , 7 can reduce the amount of movement of the valve pressing body 4 with respect to the angle at which the adjusting screw body 5 is turned.
【００１１】また逆に、調節ねじ体５に逆の回転方向で
二つのねじ部６，７を設け、一方のねじ部６をケース３
に螺合させると共に他方のねじ部７を弁押圧体４に螺合
させるようにすれば、弁押圧体４の移動量はケース３に
対する調節ねじ体５の移動量と調節ねじ体５に対する弁
押圧体４の移動量の和になり、調節ねじ体５を回す角度
に対する弁押圧体４の移動量を大きくすることができ
る。Conversely, two screw portions 6 and 7 are provided on the adjusting screw body 5 in opposite rotation directions, and one of the screw portions 6 is
If the other screw portion 7 is screwed into the valve pressing member 4, the amount of movement of the valve pressing member 4 is limited to the amount of movement of the adjusting screw 5 with respect to the case 3 and the amount of valve pressing with respect to the adjusting screw 5. The sum of the amount of movement of the body 4 makes it possible to increase the amount of movement of the valve pressing body 4 with respect to the angle at which the adjusting screw body 5 is turned.
【００１２】さらに、弁押圧体４と排気弁体１の一方の
作用端１ａを結合させると共にケース３と排気弁体４の
他方の作用端１ｂを結合させるようにすれば、弁押圧体
４とケース３とに作用端１ａ，１ｂが結合された排気弁
体１は弁押圧体４を排気弁体１と反対方向に移動させる
際に弁押圧体４とケース３との間で引っ張られることに
なり、スリット２を閉じるように排気弁体４を強制的に
変形させることができる。Furthermore, if the valve pressing body 4 and one working end 1a of the exhaust valve body 1 are connected and the case 3 and the other working end 1b of the exhaust valve body 4 are connected, the valve pressing body 4 The exhaust valve body 1 having the working ends 1a and 1b coupled to the case 3 is pulled between the valve pressing body 4 and the case 3 when the valve pressing body 4 is moved in the opposite direction to the exhaust valve body 1. Thus, the exhaust valve body 4 can be forcibly deformed so as to close the slit 2.
【００１３】[0013]
【実施例】以下本発明を実施例によって詳述する。図１
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.
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は円柱状に形成されるものであ
って、下部の外周の溝部１５にはＯリング１６が取着し
てあり、下面の中央に円柱状の弁保持片１７を突出する
と共に弁保持片１７の下面にはさらに弁保持片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。また弁押圧体４の外周には雄ねじ部２０が設けてあ
る。The valve pressing member 4 is formed in a cylindrical shape, and an O-ring 16 is attached to a groove 15 on the lower outer periphery, and a cylindrical valve holding piece 17 projects at the center of the lower surface. At the same time, 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. Valve holding piece 17
Has an outer diameter approximately equal to the inner diameter of the upper end of the exhaust valve body 1, and the outer circumference of the lower end of the ventilation piece 18 has a 180 ° angle.
A pair of engaging pieces 19 are provided so as to project rearward at an angle of. A male screw portion 20 is provided on the outer periphery of the valve pressing body 4.
【００１５】排気弁体１はゴム等の弾性体によって両端
が開口した略円形パイプ状に形成してあり、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。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。弁押圧体４はケース３内に上端の開口から差し
込んで取着されるものであり、このとき、弁押圧体４の
通気用片１８の下端部は貫通孔１３に差し込まれるよう
にしてあり、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２個の凹部
１３ａに係合されるようにしてある。残りの２個の凹部
１３ａは排気口２３として開口している。The exhaust valve body 1 is formed in the shape of a substantially circular pipe having both ends opened by an elastic body such as rubber, and a slit 2 is cut in the center of the wall along the longitudinal direction (opening direction at both ends). It is formed. 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. The valve pressing body 4 is inserted into the case 3 from the opening at the upper end, and is attached. At this time, the lower end of the ventilation piece 18 of the valve pressing body 4 is inserted into the through hole 13. A pair of engagement pieces 19 provided at the lower end of the ventilation piece 18 are engaged with two of the four recesses 13 a of the through hole 13. The remaining two recesses 13 a are open as exhaust ports 23.
【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操作溝２５が設けてある。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に取り付けて
ある。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。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. An operation groove 25 into which a jig for turning the adjusting screw 5 is inserted is provided on the upper surface of the adjusting screw 5. The adjusting screw 5 is attached to the case 3 with the outer thread 6 screwed into the female thread 14 of the case 3 and the inner thread 7 screwed into the male thread 20 of the valve pressing body 4. It is. Here, the two screw portions 6 provided on the adjustment screw body 5
7 are formed in the same rotation direction and with different screw pitches. For example to form a threaded portion 6 at the right thread 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 the pitch P 1
In the right-hand thread, the external thread portion 20 of the valve pressing body 4 will be formed respectively in the right thread pitch P 2.
【００１７】上記のようにして形成される定速排気弁装
置にあって、調節ねじ体５を回して弁押圧体４を排気弁
体１側へ移動させると、排気弁体１のその両端の作用端
１ａ，１ｂが弁押圧体４とケース１の内底面との間で圧
縮力を受け、図１（ａ）にみられるように排気弁体１は
長さ方向の中央部がビール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
きるものであり、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。In the constant-speed exhaust valve device formed as described above, when the adjusting screw 5 is turned to move the valve pressing body 4 toward the exhaust valve 1, both ends of the exhaust valve 1 are closed. The working ends 1a and 1b receive a compressive force between the valve pressing body 4 and the inner bottom surface of the case 1, and as shown in FIG. As a result, the slit 2 can be opened with the deformation, and 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. it can.
【００１８】そしてこのように調節ねじ体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（Ｐ
1 −Ｐ2 ）のピッチで移動することになり、Ｐ1 ＞Ｐ2
とし且つＰ1 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。When turning the adjusting screw 5 in this manner, for example, turning the adjusting screw 5 clockwise, the adjusting screw 5 is screwed into the female screw 14 of the case 3.
To screwed at a pitch P 1 is downward (exhaust valve member 1 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 becomes (P
1− P 2 ), and P 1 > P 2
And by reducing the difference between P 1 and P 2 , the amount of movement of the valve pressing body 4 with respect to the angle at which the adjusting screw 5 is turned can be reduced. The valve pressing body 4 is changed so that the opening amount changes little by little.
Can be adjusted, and adjustment to a predetermined pumping speed becomes easy.
【００１９】尚、調節ねじ体５のねじ部６のピッチＰ1
とねじ部７のピッチＰ2 を、Ｐ1 ＜Ｐ2 に設定すると、
調節ねじ体５を上方（排気弁体１と反対側）に螺進する
ように回すことによって弁押圧体４を下方（排気弁体１
側）に螺進させるようにすることができる。従ってこの
場合には、定速排気弁装置を組み立てるにあたって、調
節ねじ体５のねじ部７内に弁押圧体４の雄ねじ部２０を
完全に螺合させた状態でケース３に挿入して調節ねじ体
５のねじ部６をケース３の雌ねじ部１４に螺合させてい
き、弁押圧体４の係合片１９が貫通孔１３の凹部１３ａ
に係合された時点で雄ねじ部１４に対するねじ部６の螺
合を緩める逆向きに調節ねじ体５を回すと、貫通孔１３
の凹部１３に係合片１９が係合されて回り止めされてい
る弁押圧体４は排気弁体１側に螺進されてケース３内に
セットされることになり、定速排気弁装置の組み立て作
業が容易になるものである。The pitch P 1 of the thread 6 of the adjusting screw 5
When the pitch P 2 of the screw part 7 is set to P 1 <P 2 ,
The valve pressing body 4 is turned downward (exhaust valve body 1) by turning the adjusting screw body 5 upward (toward the side opposite to the exhaust valve body 1).
Side). Therefore, in this case, when assembling the constant-speed exhaust valve device, the male screw portion 20 of the valve pressing member 4 is completely screwed into the screw portion 7 of the adjusting screw member 5 and inserted into the case 3 to adjust the adjusting screw. The threaded portion 6 of the body 5 is screwed into the female threaded portion 14 of the case 3, and the engagement piece 19 of the valve pressing body 4 is engaged with the recess 13 a of the through hole 13.
When the adjusting screw 5 is turned in the opposite direction to loosen the screwing of the screw portion 6 with the male screw portion 14 at the time when the
The valve pressing body 4 which is engaged with the engaging piece 19 in the concave portion 13 and is prevented from rotating is screwed toward the exhaust valve body 1 and set in the case 3. This facilitates assembly work.
【００２０】上記実施例では調節ねじ体５に設けた二つ
のねじ部６，７を同じ回転方向のものとして形成するよ
うにしたが、調節ねじ体５に設けた二つのねじ部６，７
を逆の回転方向に形成することもできる。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Ｐ
2 の左ねじで形成するものである。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 の左ねじでそれぞれ形成され
ることになる。このものでは、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）に螺進し、また調節ねじ体５はピッチＰ2 で同様に
下方（排気弁体１側）に螺進することになる。このよう
に調節ねじ体５を回すと調節ねじ体５と弁押圧体４は同
じ方向に螺進するものであり、弁押圧体４はＰ1 ＋Ｐ2
のピッチで移動することになる。従って弁押圧体４の移
動量はケース３に対する調節ねじ体５の移動量と調節ね
じ体５に対する弁押圧体４の移動量の和になり、調節ね
じ体５を回す角度に対する弁押圧体４の移動量を大きく
することができ、調節ねじ体５を少し回すだけで弁押圧
体４の移動量を大きく調節することができるものであ
り、所定の排気速度への調節を迅速におこなうことがで
きるものである。In the above embodiment, the two screw portions 6, 7 provided on the adjusting screw 5 are formed so as to have the same rotation direction.
Can be formed in the opposite rotation direction. For example to form a threaded portion 6 at the right thread pitch P 1, the threaded portion 7 pitch P
It is formed with 2 left-hand threads. In this case, case 3
The female screw portion 14 at a right hand thread pitch P 1, the external thread portion 20 of the valve pressing body 4 will be respectively formed in the left screw of the pitch P 2. In this device, when the adjusting screw 5 is turned, for example, clockwise, the adjusting screw 5 is pitched downward at a pitch P1 (exhaust valve 1 ) by screwing of the screw 6 and the female screw 14 of the case 3.
And screwing the side), also adjusting screw member 5 will be screwed in the same manner downward (exhaust valve member 1 side) at a pitch P 2. When the adjusting screw body 5 is turned in this way, the adjusting screw body 5 and the valve pressing body 4 are screwed in the same direction, and the valve pressing body 4 is P 1 + P 2.
It will move at the pitch of. Accordingly, the amount of movement of the valve pressing body 4 is the sum of the amount of movement of the adjusting screw body 5 with respect to the case 3 and the amount of movement of the valve pressing body 4 with respect to the adjusting screw body 5. The amount of movement can be increased, and the amount of movement of the valve pressing body 4 can be greatly adjusted by simply turning the adjusting screw 5 a little, so that adjustment to a predetermined pumping speed can be quickly performed. Things.
【００２１】また、排気弁体１をケース３内に挿着する
にあたって、排気弁体１の一方の端部である作用端１ａ
を弁押圧体４の弁保持片１７と接着したり、あるいは弁
保持片１７に凸部を排気弁体１に凹部を設けて機械的に
凹凸嵌合させたりして、弁押圧体４に排気片体１の作用
端１ａを固着させて結合すると共に、排気弁体１の他方
の端部である作用端１ｂをケース３の内底面と同様に接
着したり機械的に結合させたりして、ケース３に排気片
体１の作用端１ｂを固着させて結合するようにすること
ができる。この場合には、弁押圧体４を排気弁体１側へ
移動させて排気弁体１を圧縮させると、排気弁体１の弁
押圧体４に固着された上端も下方へ移動して排気弁体１
を所定の量で変形させてスリット２の所定量に開口させ
ることができると共に、弁押圧体４を排気弁体１と反対
側へ移動させると、排気弁体１の弁押圧体４に固着され
た上端も上方へ引っ張られて移動し、スリット２を閉じ
るように排気弁体４を強制的に変形させることができ
る。従って、排気弁体１の弾性力が不十分であっても弁
押圧体４の移動量に応じた変形量に排気弁体１を変形さ
せることができ、弁押圧体４の移動量とスリット２の開
口量とを一致させて所定の排気速度への調節を精度良く
おこなうことができるものである。When the exhaust valve 1 is inserted into the case 3, the working end 1 a, which is one end of the exhaust valve 1.
Is adhered to the valve holding member 17 of the valve pressing member 4, or a convex portion is provided on the valve holding member 17, and a concave portion is provided in the exhaust valve body 1 to mechanically fit the concave / convex portion. The working end 1a of the piece 1 is fixed and connected, and the working end 1b, which is the other end of the exhaust valve body 1, is bonded or mechanically connected similarly to the inner bottom surface of the case 3, The working end 1b of the exhaust piece 1 can be fixedly connected to the case 3. In this case, when the valve pressing body 4 is moved toward the exhaust valve body 1 to compress the exhaust valve body 1, the upper end of the exhaust valve body 1 fixed to the valve pressing body 4 also moves downward, and the exhaust valve Body 1
Can be deformed by a predetermined amount to open the slit 2 to a predetermined amount, and when the valve pressing body 4 is moved to the side opposite to the exhaust valve body 1, it is fixed to the valve pressing body 4 of the exhaust valve body 1. The upper end also moves by being pulled upward, and the exhaust valve body 4 can be forcibly deformed so as to close the slit 2. Therefore, even if the elasticity of the exhaust valve body 1 is insufficient, the exhaust valve body 1 can be deformed to a deformation amount corresponding to the moving amount of the valve pressing body 4, and the moving amount of the valve pressing body 4 and the slit 2 It is possible to accurately adjust the pumping speed to a predetermined exhaust speed by making the opening amount coincide with the opening amount.
【００２２】図２乃至図４は本発明の変形例を示すもの
である。図１の実施例とはケース３と弁押圧体４と調節
ねじ体５のねじ部の構成が相違するのみであり、他の構
成は図１の実施例と同じである。図２の実施例では、調
節ねじ体５を有底の二重円筒形状に形成してあり、外筒
２６の内周に雌ねじとしてねじ部６が、内筒２７の内周
に雌ねじとしてねじ部７がそれぞれ設けてある。そして
ケース３の外周に設けた雄ねじ部２８にねじ部６を螺合
させると共に調節ねじ体５に設けた雄ねじ部２０にねじ
部７を螺合させるようにしてある。FIGS. 2 to 4 show modifications of the present invention. 1 is different from the embodiment of FIG. 1 only in the configuration of the screw portion of the case 3, the valve pressing member 4, and the adjusting screw 5, and the other configurations are the same as those of the embodiment of FIG. In the embodiment of FIG. 2, the adjusting screw 5 is formed in a double cylindrical shape with a bottom, and a screw portion 6 as a female screw is formed on the inner periphery of the outer tube 26, and a screw portion is formed as a female screw on the inner periphery of the inner tube 27. 7 are provided. The screw 6 is screwed into the male screw 28 provided on the outer periphery of the case 3, and the screw 7 is screwed into the male screw 20 provided on the adjusting screw 5.
【００２３】図３の実施例では、調節ねじ体５を二段円
柱形状に形成してあり、径の大きい上部円柱部３０にね
じ部６が、径の小さい下部円柱３１にねじ部７がそれぞ
れ雄ねじとして設けてある。そしてケース３の内周に設
けた雌ねじ部１４にねじ部６を螺合させると共に、弁押
圧体４の上部の有底円筒部３２の内周に設けた雌ねじ部
３３にねじ部７を螺合させるようにしてある。In the embodiment shown in FIG. 3, the adjusting screw body 5 is formed in a two-stage cylindrical shape, and the screw part 6 is formed on the large cylindrical part 30 and the screw part 7 is formed on the small cylindrical part 31. It is provided as a male screw. The screw portion 6 is screwed into the female screw portion 14 provided on the inner circumference of the case 3, and the screw portion 7 is screwed into the female screw portion 33 provided on the inner circumference of the bottomed cylindrical portion 32 above the valve pressing body 4. It is made to let.
【００２４】図４の実施例では、調節ねじ体５を芯部３
４を設けた有底円筒形状に形成してあり、外周円筒３５
の内周に雌ねじとしてねじ部６が、芯部３４の外周に雄
ねじとしてねじ部７がそれぞれ設けてある。そしてケー
ス３の外周に設けた雄ねじ部２８にねじ部６を螺合させ
ると共に、弁押圧体４の上部の有底円筒部３２の内周に
設けた雌ねじ部３３にねじ部７を螺合させるようにして
ある。In the embodiment shown in FIG. 4, the adjusting screw 5 is connected to the core 3.
4 is formed in a bottomed cylindrical shape, and an outer peripheral cylinder 35 is provided.
A threaded portion 6 is provided as an internal thread on the inner periphery of the core portion 34, and a threaded portion 7 is provided on the outer periphery of the core portion 34 as an external thread. Then, the screw portion 6 is screwed into the male screw portion 28 provided on the outer periphery of the case 3, and the screw portion 7 is screwed into the female screw portion 33 provided on the inner periphery of the bottomed cylindrical portion 32 above the valve pressing body 4. It is like that.
【００２５】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との気密性も弁押圧体４による排気弁
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２３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 being pressed by the valve pressing body 4 and the case 3 by the valve pressing body 4. Is held. Accordingly, the high-pressure air reaching the air chamber 37 passes through only the opening of the slit 2 and reaches the inside of the exhaust valve body 1 and is exhausted from the exhaust port 23. However, the inside of the exhaust valve body 1 communicates with the outside through the exhaust port 23. The pressure is equal to the atmospheric pressure due to the communication. For this reason, a pressure difference is generated between the air chamber 37 into which the high-pressure air flows and the inside of the exhaust valve body 1, and this pressure difference acts as a force in a direction to close the opening of the slit 2, and reaches the air chamber 37. When the pressure of the air is high, the opening of the slit 2 becomes small and the airflow that can pass through the opening decreases, so that constant-speed exhaust characteristics can be obtained.
【００２６】[0026]
【発明の効果】上記のように本発明は、ケース内に排気
弁体及び排気弁体を押圧するための弁押圧体を配設する
と共に弁押圧体を押し引き操作するための調節ねじ体を
ケースに設け、調節ねじ体に同じ回転方向で且つねじピ
ッチが異なる二つのねじ部を設け、一方のねじ部をケー
スに螺合させると共に他方のねじ部を弁押圧体に螺合さ
せるようにしたので、調節ねじ体を回して螺進・螺退さ
せて弁押圧体を押し引き操作し、弁押圧体による排気弁
体への押圧力を調節するにあたって、弁押圧体の移動量
はケースに対する調節ねじ体の移動量と調節ねじ体に対
する弁押圧体の移動量の差になり、調節ねじ体に設けた
二つのねじ部のねじピッチの差を小さくすることによっ
て、調節ねじ体を回す角度に対する弁押圧体の移動量を
小さくすることができるものであり、スリットの開口量
が少しづつ変化するように弁押圧体の移動量を調節する
ことが容易になって、所定の排気速度への調節を容易に
おこうなうことができるものである。As described above, the present invention provides an exhaust valve body and a valve pressing body for pressing the exhaust valve body in a case, and an adjusting screw body for pushing and pulling the valve pressing body. Provided in the case, the adjusting screw body is provided with two screw portions having the same rotation direction and different screw pitches, and one of the screw portions is screwed to the case and the other screw portion is screwed to the valve pressing body. In order to adjust the pressing force of the valve pressing body against the exhaust valve body by turning the adjusting screw body to advance and retract the screw to push and pull the valve pressing body, the amount of movement of the valve pressing body is adjusted to the case. The difference between the amount of movement of the screw body and the amount of movement of the valve pressing body with respect to the adjusting screw body, and by reducing the difference between the screw pitches of the two screw portions provided on the adjusting screw body, the valve with respect to the angle at which the adjusting screw body is turned. It is possible to reduce the amount of movement of the pressing body It is easy to adjust the moving amount of the valve pressing body so that the opening amount of the slit changes little by little, and it is possible to easily adjust to a predetermined exhaust speed. It is.
【００２７】また、調節ねじ体に逆の回転方向で二つの
ねじ部を設け、一方のねじ部をケースに螺合させると共
に他方のねじ部を弁押圧体に螺合させるようにすること
によって、弁押圧体の移動量はケースに対する調節ねじ
体の移動量と調節ねじ体に対する弁押圧体の移動量の和
になり、調節ねじ体を回す角度に対する弁押圧体の移動
量を大きくすることができるものであり、所定の排気速
度への調節を迅速におこなうことができるものである。Also, by providing two screw portions in the adjusting screw body in opposite rotation directions, one of the screw portions is screwed into the case, and the other screw portion is screwed into the valve pressing body. The moving amount of the valve pressing body is the sum of the moving amount of the adjusting screw body with respect to the case and the moving amount of the valve pressing body with respect to the adjusting screw body, and the moving amount of the valve pressing body with respect to the angle at which the adjusting screw body is turned can be increased. It is possible to quickly adjust to a predetermined pumping speed.
【００２８】さらに、弁押圧体と排気弁体の一方の作用
端を結合させると共にケースと排気弁体の他方の作用端
を結合させることによって、弁押圧体とケースとに作用
端が結合された排気弁体は弁押圧体を排気弁体と反対方
向に移動させる際に弁押圧体とケースとの間で引っ張ら
れることになり、スリットを閉じるように排気弁体を強
制的に変形させることができ、所定の排気速度への調節
を精度良くおこなうことができるものである。Further, by connecting the valve pressing body and one working end of the exhaust valve body and connecting the case and the other working end of the exhaust valve body, the working end is connected to the valve pressing body and the case. The exhaust valve body will be pulled between the valve press body and the case when moving the valve press body in the opposite direction to the exhaust valve body, and the exhaust valve body may be forcibly deformed to close the slit. It is possible to accurately adjust the pumping speed to a predetermined value.
【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】本発明の他の実施例の断面図である。FIG. 2 is a sectional view of another embodiment of the present invention.
【図３】本発明のさらに他の実施例の断面図である。FIG. 3 is a sectional view of still another embodiment of the present invention.
【図４】本発明のさらに他の実施例の断面図である。FIG. 4 is a sectional view of still another embodiment of the present invention.
【図５】従来例の断面図である。FIG. 5 is a sectional view of a conventional example.
【図６】排気弁の動作を示すものであり、（ａ），
（ｂ），（ｃ）はそれぞれ正面図である。FIG. 6 shows the operation of the exhaust valve, and (a),
(B), (c) is a front view, respectively.
１ 排気弁体 ２ スリット ３ ケース ４ 弁押圧体 ５ 調節ねじ体 ６ ねじ部 ７ ねじ部 DESCRIPTION OF SYMBOLS 1 Exhaust valve body 2 Slit 3 Case 4 Valve pressing body 5 Adjustment screw body 6 Screw part 7 Screw part
フロントページの続き (56)参考文献 特開 平３−193031（ＪＰ，Ａ) 特開 平３−221031（ＪＰ，Ａ) 特開 昭60−263763（ＪＰ，Ａ) 実開 昭58−171110（ＪＰ，Ｕ) 実開 昭61−118302（ＪＰ，Ｕ) 実開 昭61−165703（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16K 7/00 Continuation of the front page (56) References JP-A-3-193030 (JP, A) JP-A-3-221103 (JP, A) JP-A-60-263763 (JP, A) JP-A-58-171110 (JP) , U) Fully open 1986-118302 (JP, U) Fully open 1986-165703 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F16K 7/00
Claims (3)
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、ケー
ス内に排気弁体及び排気弁体を押圧するための弁押圧体
を配設すると共に弁押圧体を押し引き操作するための調
節ねじ体をケースに設け、調節ねじ体に同じ回転方向で
且つねじピッチが異なる二つのねじ部を設け、一方のね
じ部をケースに螺合させると共に他方のねじ部を弁押圧
体に螺合させ、弁押圧体と排気弁体の一方の作用端を結
合させると共にケースと排気弁体の他方の作用端を結合
させ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 sphygmomanometer, wherein an exhaust valve is pressed to adjust an opening amount of a slit provided in the exhaust valve body so that an exhaust speed can be adjusted. A valve pressing body for pressing the body and the exhaust valve body is provided, and an adjusting screw body for pushing and pulling the valve pressing body is provided in the case. The adjusting screw body has the same rotation direction and a different screw pitch. One screw part is screwed into the case and the other screw part is screwed into the valve pressing body, and the valve pressing body and one working end of the exhaust valve body are connected.
And connect the case and the other working end of the exhaust valve
A constant-speed exhaust valve device for a sphygmomanometer characterized by being made to work.
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、ケー
ス内に排気弁体及び排気弁体を押圧するための弁押圧体
を配設すると共に弁押圧体を押し引き操作するための調
節ねじ体をケースに設け、調節ねじ体に逆の回転方向で
二つのねじ部を設け、一方のねじ部をケースに螺合させ
ると共に他方のねじ部を弁押圧体に螺合させて成ること
を特徴とする血圧計の定速排気弁装置。2. An exhaust valve body by pressing the exhaust valve body.
By adjusting the opening amount of the slit provided in the
Sphygmomanometer constant-speed exhaust valve device
Exhaust valve body and a valve pressing body for pressing the exhaust valve body
And a control for pushing and pulling the valve pressing body.
An articulated screw body is provided on the case, the adjusting screw body is provided with two screw portions in opposite rotation directions, and one screw portion is screwed into the case and the other screw portion is screwed into the valve pressing body. A constant speed exhaust valve device for a sphygmomanometer.
合させると共にケースと排気弁体の他方の作用端を結合
させて成ることを特徴とする請求項２に記載の血圧計の
定速排気弁装置。3. The sphygmomanometer according to claim 2 , wherein the valve pressing body is connected to one of the working ends of the exhaust valve body and the case is connected to the other working end of the exhaust valve body. Constant speed exhaust valve device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4103375A JP3024858B2 (en) | 1992-04-23 | 1992-04-23 | 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 |
|---|---|---|---|
| JP4103375A JP3024858B2 (en) | 1992-04-23 | 1992-04-23 | Sphygmomanometer constant-speed exhaust valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05296354A JPH05296354A (en) | 1993-11-09 |
| JP3024858B2 true JP3024858B2 (en) | 2000-03-27 |
Family
ID=14352357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4103375A Expired - Lifetime JP3024858B2 (en) | 1992-03-26 | 1992-04-23 | Sphygmomanometer constant-speed exhaust valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3024858B2 (en) |
-
1992
- 1992-04-23 JP JP4103375A patent/JP3024858B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05296354A (en) | 1993-11-09 |
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