JP2005155898A - Valve element, and flow rate adjusting device and blood-pressure meter comprising valve element - Google Patents

Valve element, and flow rate adjusting device and blood-pressure meter comprising valve element Download PDF

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JP2005155898A
JP2005155898A JP2004174380A JP2004174380A JP2005155898A JP 2005155898 A JP2005155898 A JP 2005155898A JP 2004174380 A JP2004174380 A JP 2004174380A JP 2004174380 A JP2004174380 A JP 2004174380A JP 2005155898 A JP2005155898 A JP 2005155898A
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flow port
valve body
flow
tip
convex portions
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Shigeto Negishi
繁人 根岸
Junichi Kato
淳一 加藤
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Japan Precision Instruments Inc
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Japan Precision Instruments Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve element capable of performing the fine adjustment of a flow rate of fluid with high accuracy. <P>SOLUTION: In this valve element 27 of which a surface 37 is closely kept into contact with or separated from a projecting end 29 of a circulation port 28 from which the fluid flows out, for opening and closing the circulation port, a plurality of projecting parts 50 of the uniform shape are formed on at least a part kept into contact with the projecting end 29 of the circulation port. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、弁体及びこの弁体を備えた流量調節装置に係り、特に、血圧計用排気装置に適用されて好適な流量調節装置、及びこの流量調節装置に具備される弁体、並びにこの流量調節装置を用いた血圧計に関する。   The present invention relates to a valve body and a flow control device including the valve body, and in particular, a flow control device suitable for being applied to an exhaust device for a sphygmomanometer, a valve body provided in the flow control device, and this The present invention relates to a sphygmomanometer using a flow control device.

血圧計には各種のものが提案されているが、カフ帯内の圧力を所定値まで増加させた後その圧力を徐々に減圧していき、この減圧過程において各人の血圧値を測定するものがある。このような血圧計では、カフ帯内の圧力を徐々に減圧するために血圧計用排気装置が使用されている。   Various types of sphygmomanometers have been proposed. After increasing the pressure in the cuff zone to a predetermined value, the pressure is gradually reduced, and the blood pressure value of each person is measured during this pressure reduction process. There is. In such a sphygmomanometer, a sphygmomanometer exhaust device is used to gradually reduce the pressure in the cuff belt.

この血圧計用排気装置は、特許文献１に記載のように、流通口を通してカフ帯やポンプに接続されるハウジングと、弁体（オリフィスパッキン）の表面を流通口の流通口突端に圧接または離反することによって、上記弁体により流通口を閉動作または開動作する駆動軸と、電磁力に基づいて駆動軸を駆動する駆動コイルを備えた駆動装置と、電磁力の方向と反対方向に駆動軸を付勢する付勢部材とを有して構成される。   As described in Patent Document 1, this sphygmomanometer exhaust device presses or separates a housing connected to a cuff belt or a pump through a flow port and the surface of a valve body (orifice packing) to a flow port protrusion end of the flow port. A driving shaft that closes or opens the flow port by the valve body, a driving device that includes a driving coil that drives the driving shaft based on electromagnetic force, and a driving shaft in a direction opposite to the direction of electromagnetic force. And an urging member for urging.

上記血圧計用排気装置を用いて血圧測定をする場合、まず、駆動コイルにより電磁力を発生させて駆動軸を駆動し、この駆動軸の先端の弁体を流通口突端に圧接して流通口を閉動作させる。この状態で加圧ポンプによりカフ帯内へ空気を供給してカフ帯を加圧する。   When blood pressure is measured using the sphygmomanometer exhaust device, first, an electromagnetic force is generated by a drive coil to drive the drive shaft, and the valve body at the tip of the drive shaft is pressed against the tip of the flow port and the flow port Is closed. In this state, air is supplied into the cuff band by a pressure pump to pressurize the cuff band.

次に、カフ帯の減圧過程に移行する。このときには、駆動コイルへの供給電流を徐々に減少させることによって、駆動コイルが発生する電磁力を弱めていく。すると、付勢部材の付勢力によって駆動軸が移動し、弁体が流通口突端から離反して弁体が徐々に開動作し、カフ帯内の空気が流通口を通りハウジング内から大気中へ微少量ずつ排気される。この微少量排気によるカフ帯内の減圧過程において各人の血圧が計測される。
特許第３０２９０７３号公報 Next, the process proceeds to the cuff zone decompression process. At this time, the electromagnetic force generated by the drive coil is weakened by gradually decreasing the current supplied to the drive coil. Then, the drive shaft is moved by the urging force of the urging member, the valve body is moved away from the tip of the flow port, the valve body is gradually opened, and the air in the cuff belt passes through the flow port and moves from the inside of the housing to the atmosphere. A small amount is exhausted. Each person's blood pressure is measured in the decompression process in the cuff belt by this minute exhaust.
Japanese Patent No. 3029073

ところが、上記血圧計排気装置では、弁体と流通口突端とがともに平坦面に形成されていることから、駆動軸を介して電磁力または付勢力により弁体を流通口突端に圧接または離反したときに、流通口突端と弁体との隙間を流れる空気の流量変化が急激となる。このため、空気が流通口を通りハウジング内から大気中へ排出される際に、微少な流量調整が困難な場合がある。   However, in the sphygmomanometer exhaust device, since the valve body and the flow port tip are both formed on a flat surface, the valve body is pressed against or separated from the flow port tip by electromagnetic force or biasing force via the drive shaft. Sometimes, the flow rate change of the air flowing through the gap between the tip of the circulation port and the valve body becomes abrupt. For this reason, when air is discharged from the inside of the housing to the atmosphere through the circulation port, it may be difficult to finely adjust the flow rate.

本発明の目的は、上述の事情を考慮してなされたものであり、流体の微少な流量調節を高精度に実施できる弁体及びこの弁体を備えた流量調節装置並びに、この流量調節装置を用いた血圧計を提供することにある。   An object of the present invention has been made in consideration of the above-described circumstances, and a valve body capable of performing a fine flow rate adjustment of a fluid with high accuracy, a flow rate adjustment device including the valve body, and the flow rate adjustment device. It is to provide a blood pressure monitor used.

請求項１に記載の発明は、流体が流通口から流れ出る流通口突端に表面が圧接または離反して、上記流通口を閉動作または開動作する弁体において、上記表面には、少なくとも上記流通口突端に接触する箇所に同一形状の凸部が複数形成されたことを特徴とするものである。   According to the first aspect of the present invention, there is provided a valve body in which a surface is pressed against or separated from a tip of a flow port from which a fluid flows out from the flow port, and the flow port is closed or opened. A plurality of convex portions having the same shape are formed at locations that contact the protruding end.

請求項２に記載の発明は、流体が流通口から流れ出る流通口突端に表面が圧接または離反して、上記流通口を閉動作または開動作する弁体において、上記表面には、少なくとも上記流通口突端に接触する箇所に凸部が複数形成され、上記凸部は、表面において、少なくとも流通口突端に接触する箇所に規則正しく配置されたことを特徴とするものである。   According to a second aspect of the present invention, there is provided a valve body in which a surface is pressed against or separated from a tip of a flow port from which a fluid flows out from the flow port, and the flow port is closed or opened. A plurality of convex portions are formed at locations that contact the protruding ends, and the convex portions are regularly arranged on the surface at least at locations that contact the protruding ends of the flow port.

請求項３に記載の発明は、請求項1または２に記載の発明において、上記凸部は、流通口突端の軸線を通る縦断面における片側に、２個以上接触する状態で形成されたことを特徴とするものである。   The invention according to claim 3 is the invention according to claim 1 or 2, wherein the convex portion is formed in a state of being in contact with two or more on one side in a vertical cross section passing through the axis of the flow port protruding end. It is a feature.

請求項４に記載の発明は、請求項1乃至３のいずれかに記載の発明において、上記凸部が、縦横方向に独立した錐体、半球体、柱体等の突起として、または、一方向に同断面で連続した凸条として形成されていることを特徴とするものである。   According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the convex portion is formed as a projection of a cone, a hemisphere, a column, or the like independent in the vertical and horizontal directions, or in one direction. Are formed as ridges continuous in the same cross section.

請求項５に記載の発明は、流体が流れる流通口が形成されると共に、この流通口から流体が流れ出る流通口突端が形成されたハウジングと、このハウジング内に配設され、表面が上記流通口突端に圧接または離反することで上記流通口を閉動作または開動作して、当該流通口内を流れる流体の流量を調節する弁体と、上記ハウジング内に配設され、上記弁体をその軸心に沿って駆動して閉動作または開動作させる駆動装置とを有する流量調節装置において、上記弁体の上記表面には、少なくとも上記流通口突端に接触する箇所に同一
形状の凸部が複数形成されたことを特徴とするものである。 According to the fifth aspect of the present invention, there is provided a housing in which a flow port through which a fluid flows is formed and a flow port protruding end from which the fluid flows out from the flow port, and a surface disposed in the housing. A valve body that closes or opens the flow port by press-contacting or separating from the protruding end to adjust the flow rate of the fluid flowing through the flow port, and the valve body that is disposed in the housing, the valve body being an axis thereof A plurality of convex portions having the same shape are formed on the surface of the valve body at least at locations that contact the protruding end of the flow port. It is characterized by that.

請求項６に記載の発明は、請求項５に記載の発明において、上記弁体の凸部は、表面において、少なくとも流通口突端に接触する箇所に規則正しく配置されたことを特徴とする
ものである。 The invention described in claim 6 is characterized in that, in the invention described in claim 5, the convex part of the valve body is regularly arranged on the surface at least at a position where it contacts the end of the flow port. .

請求項７に記載の発明は、請求項５または６に記載の発明において、上記弁体の凸部は、流通口突端の軸線を通る縦断面における片側に、２個以上接触する状態で形成されたことを特徴とするものである。   The invention according to claim 7 is the invention according to claim 5 or 6, wherein the convex part of the valve body is formed in a state where two or more are in contact with one side in a longitudinal section passing through the axis of the flow port protruding end. It is characterized by that.

請求項８に記載の発明は、請求項５乃至７のいずれかに記載の発明において、上記弁体の凸部が、縦横方向に独立した錐体、半球体、柱体等の突起として、または、一方向に同断面で連続した凸条として形成されていることを特徴とするものである。   The invention according to claim 8 is the invention according to any one of claims 5 to 7, wherein the convex portion of the valve body is a protrusion such as a cone, a hemisphere, or a column that is independent in the vertical and horizontal directions, or It is characterized by being formed as ridges that are continuous in the same cross section in one direction.

請求項９に記載の発明は、請求項５乃至８のいずれかに記載の発明において、人体の腕や手首などの部位に巻き付けられるカフ帯内に供給された空気を排出する血圧計用排気装置として使用されることを特徴とするものである。   The invention according to claim 9 is the sphygmomanometer exhaust device for discharging air supplied in a cuff belt wound around a part such as an arm or wrist of a human body in the invention according to any one of claims 5 to 8 It is characterized by being used as.

請求項１０に記載の発明は、請求項５乃至６のいずれかに記載の流量調節装置を用いたことを特徴とする血圧計である。   A tenth aspect of the present invention is a sphygmomanometer characterized by using the flow control device according to any one of the fifth to sixth aspects.

本発明に係る弁体またはこの弁体を備えた流量調節装置によれば、弁体の表面に形成された複数の凸部が同一形状であることから、弁体が軸方向に移動して、これらの凸部が流通口突端に圧接または離反して変形したとき、これら複数の凸部の変形量が同一となる。このため、これらの変形した凸部に隣接した凹部の容積変化量も同一となり、この凹部により形成される流路の流路面積の変化量も同一となる。このように、弁体の軸方向移動量に対して上記流路の流路面積の変化量を決定できるので、弁体の軸方向移動量を制御する
ことにより、流通口突端と弁体の表面との間の上記流路から流れ出る流体の微少流量を高精度に調節できる。 According to the valve body according to the present invention or the flow control device provided with the valve body, since the plurality of convex portions formed on the surface of the valve body have the same shape, the valve body moves in the axial direction, When these convex portions are deformed by being pressed against or separated from the tip of the circulation port, the deformation amounts of the plurality of convex portions are the same. For this reason, the volume change amount of the recessed part adjacent to these deformed convex parts also becomes the same, and the change amount of the flow path area of the flow path formed by this recessed part also becomes the same. In this way, the amount of change in the flow path area of the flow path can be determined with respect to the amount of axial movement of the valve body, so by controlling the amount of axial movement of the valve body, The minute flow rate of the fluid flowing out from the flow path between the two can be adjusted with high accuracy.

以下、本発明を実施するための最良の形態を、図面に基づき説明する。
図１は、本発明に係る流量調節装置の一実施の形態である血圧計用排気装置を示す断面図である。図２は、図１の血圧計用排気装置において、サブハウジングを除いて示す斜視図である。 The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view showing a blood pressure monitor exhaust device according to an embodiment of the flow control device of the present invention. FIG. 2 is a perspective view of the sphygmomanometer exhaust device of FIG. 1 except for the sub-housing.

ここで、流量調節装置としての血圧計用排気装置２０が用いられる電動血圧計１０を図７に示す。この電動血圧計１０は、人体の腕や手首あるいは指などの部位に巻き付けられるカフ帯１１と、このカフ帯１１に圧縮空気を供給するポンプ１２と、カフ帯１１内の空気圧を検出する圧力計１３と、カフ帯１１内の空気を導出管１４を通して一定速度で大気中へ排出する血圧計用排気装置２０と、圧力計１３からの検出信号に基づきポンプ１２の作動を制御してカフ帯１１へ一定圧の空気を供給すると共に、血圧計用排気装置２０の作動を制御してカフ帯１１から空気を一定速度で排出させるマイクロコンピュータ１５と、を有して構成される。   Here, FIG. 7 shows an electric sphygmomanometer 10 in which the sphygmomanometer exhaust device 20 as a flow rate adjusting device is used. The electric sphygmomanometer 10 includes a cuff band 11 wound around a part of a human body such as an arm, a wrist, or a finger, a pump 12 that supplies compressed air to the cuff band 11, and a pressure gauge that detects air pressure in the cuff band 11. 13, the sphygmomanometer exhaust device 20 for discharging the air in the cuff belt 11 to the atmosphere at a constant speed through the outlet pipe 14, and the cuff belt 11 by controlling the operation of the pump 12 based on the detection signal from the pressure gauge 13. And a microcomputer 15 that controls the operation of the sphygmomanometer exhaust device 20 to discharge the air from the cuff belt 11 at a constant speed.

上述のようにカフ帯１１内の空気を徐々に排気する血圧計用排気装置２０は、図１及び図６に示すように、メインハウジング２１の収納空間２３内にヨーク２４、永久磁石２５、駆動コイル２６及び弁体２７が収納され、このメインハウジング２１の開口をサブハウジング２２が覆って構成される。   As described above, the sphygmomanometer exhaust device 20 that gradually exhausts the air in the cuff belt 11 includes a yoke 24, a permanent magnet 25, and a drive in the storage space 23 of the main housing 21, as shown in FIGS. The coil 26 and the valve body 27 are housed, and the sub housing 22 covers the opening of the main housing 21.

メインハウジング２１は、樹脂材料にて有底の四角筒形状に形成される。また、サブハウジング２２も樹脂材料にて構成され、このサブハウジング２２には、流体としての空気が流れる流通口２８が形成される。この流通口２８におけるサブハウジング２２の内側に、流通口２８内の流体がサブハウジング２２内へ流れ出る流通口突端２９が設けられる。流通口２８におけるサブハウジング２２の外側部分は、前記導出管１４（図７）に接続される。   The main housing 21 is formed of a resin material in a rectangular tube shape with a bottom. The sub-housing 22 is also made of a resin material, and the sub-housing 22 has a flow port 28 through which air as a fluid flows. Inside the sub-housing 22 at the flow port 28, a flow port protruding end 29 through which the fluid in the flow port 28 flows into the sub-housing 22 is provided. An outer portion of the sub housing 22 at the flow port 28 is connected to the outlet pipe 14 (FIG. 7).

これらのメインハウジング２１とサブハウジング２２が接合された状態においても、この接合箇所に連通口３０（図６参照）が設けられる。流通口２８を流れて流通口突端２９から血圧計用排気装置２０内に流入した空気は、上記連通口３０を通って大気中に排出される。   Even in the state where the main housing 21 and the sub-housing 22 are joined, the communication port 30 (see FIG. 6) is provided at the joined portion. The air flowing through the flow port 28 and flowing into the blood pressure monitor exhaust device 20 from the flow port tip 29 is discharged into the atmosphere through the communication port 30.

上記ヨーク２４は、磁性材料にてＵ字形状に構成され、その一片３１の内側に永久磁石２５が固着され、他片３２に駆動装置としての駆動コイル２６が、その中心軸Ｏ２方向に移動可能に挿通される。永久磁石２５は、弁体２７の軸心Ｏ１（後述）に対し一方の片側に配置され、駆動コイル２６は、その中心軸Ｏ２が弁体２７の上記軸心Ｏ１に対し他方の片側に位置した状態で、永久磁石２５に相対して配置される。永久磁石２５に生ずる磁力線３３は、この永久磁石２５からヨーク２４の他片３２までの間を流れる。従って、駆動コイル２６は、永久磁石２５に相対する部分３４Ａのみが磁力線３３を横切ることになる。   The yoke 24 is made of a magnetic material and is U-shaped. A permanent magnet 25 is fixed inside one piece 31, and a drive coil 26 as a drive device is movable on the other piece 32 in the direction of the central axis O 2. Is inserted. The permanent magnet 25 is arranged on one side with respect to an axis O1 (described later) of the valve element 27, and the drive coil 26 has a central axis O2 located on the other side with respect to the axis O1 of the valve element 27. In the state, it is arranged relative to the permanent magnet 25. A line of magnetic force 33 generated in the permanent magnet 25 flows between the permanent magnet 25 and the other piece 32 of the yoke 24. Accordingly, in the drive coil 26, only the portion 34 </ b> A facing the permanent magnet 25 crosses the magnetic force line 33.

上記駆動コイル２６は、略四角筒形状のボビン３５に導線３６が巻き回されて構成されたものであり、面積の広い部分が永久磁石２５に相対する部分３４Ａとなるように配置される。また、ボビン３５には、駆動コイル２６の中心軸Ｏ２方向の一端側に弁体２７が嵌合される。   The drive coil 26 is configured by winding a conducting wire 36 around a substantially square cylindrical bobbin 35, and is arranged so that a portion with a large area becomes a portion 34 </ b> A facing the permanent magnet 25. Further, the valve body 27 is fitted to the bobbin 35 at one end side in the direction of the central axis O2 of the drive coil 26.

この弁体２７は、その軸心Ｏ１がサブハウジング２２の流通口２８の軸心と一致して配置され、軸心Ｏ１に沿って移動することで、その表面３７が流通口突端２９に圧接または離反する。弁体２７は、その表面３７が流通口突端２９に圧接されることで流通口２８を閉塞し（閉動作）、表面３７が流通口突端２９から離反することで流通口２８を開放する（開動作）。この弁体２７の開閉動作により、流通口２８内を流れる空気の流量が調節される。   The valve body 27 has its axis O1 aligned with the axis of the flow port 28 of the sub-housing 22, and moves along the axis O1 so that the surface 37 thereof is pressed against the flow port protrusion 29. Get away. The valve body 27 closes the flow port 28 by the surface 37 being pressed against the flow port protrusion 29 (closing operation), and opens the flow port 28 by opening the surface 37 away from the flow port protrusion 29 (open). Operation). By opening and closing the valve body 27, the flow rate of the air flowing through the circulation port 28 is adjusted.

上記駆動コイル２６のボビン３５には、駆動コイル２６の中心軸Ｏ２方向の一端側に、弁体２７に隣接して一対のコイル側端子３８が設けられる。このコイル側端子３８のそれぞれに、ボビン３５に巻き回された導線３６の両端が接続される。これらのコイル側端子３８を通して駆動コイル２６の導線３６に流れた電流は、永久磁石２５に相対する部分３４Ａを流れるときに、永久磁石２５からの磁力線３３を横切ることになり、この永久磁石２５に相対する部分３４Ａにおいてサブハウジング２２へ向かう方向の電磁力が発生する。この電磁力により、弁体２７は、その軸心Ｏ１に沿って駆動されて閉動作し、表面３７が流通口突端２９に圧接して流通口２８を閉塞する。   The bobbin 35 of the drive coil 26 is provided with a pair of coil-side terminals 38 adjacent to the valve body 27 on one end side in the direction of the central axis O2 of the drive coil 26. Both ends of a conducting wire 36 wound around the bobbin 35 are connected to each of the coil side terminals 38. The current flowing through the coil side terminal 38 to the conducting wire 36 of the drive coil 26 crosses the magnetic force line 33 from the permanent magnet 25 when flowing through the portion 34 </ b> A facing the permanent magnet 25. An electromagnetic force in a direction toward the sub-housing 22 is generated in the opposed portion 34A. Due to this electromagnetic force, the valve body 27 is driven along its axis O1 to close, and the surface 37 comes into pressure contact with the flow port protrusion 29 to close the flow port 28.


弁体２７を開動作させるべく、駆動コイル２６に上記電磁力と逆方向の付勢力を付与する付勢部材としてのスプリング３９が、駆動コイル２６のボビン３５に一対取り付けられる。これらのスプリング３９は、ボビン３５において、駆動コイル２６の軸方向の任意の一位置、つまりボビン３５の一端側（図１における上端側）に固定されると共に、メインハウジング３１に固定される。また、ボビン３５の他端側（図１における下端側）には、ガイドバー４０が、駆動コイル２６の中心軸Ｏ２から外れた位置で、この中心軸Ｏ２に沿って一体に延在される。このガイドバー４０は、メインハウジング２１の底部に形成されたガイド穴４０Ａ内に摺動自在に挿通される。
In order to open the valve body 27, a pair of springs 39 are attached to the bobbin 35 of the drive coil 26 as a biasing member that applies a biasing force in the direction opposite to the electromagnetic force to the driving coil 26. These springs 39 are fixed to an arbitrary position in the axial direction of the drive coil 26 in the bobbin 35, that is, to one end side (the upper end side in FIG. 1) of the bobbin 35 and to the main housing 31. Further, on the other end side (the lower end side in FIG. 1) of the bobbin 35, the guide bar 40 is integrally extended along the central axis O 2 at a position deviated from the central axis O 2 of the drive coil 26. The guide bar 40 is slidably inserted into a guide hole 40 </ b> A formed at the bottom of the main housing 21.

従って、駆動コイル２６は、ボビン３５の一端側において、スプリング３９を介してメインハウジング２１に付勢支持され、ボビン３５の他端側において、ガイドバー４０及びガイド穴４０Ａを介してメインハウジング２１に摺動支持されて、中心軸Ｏ２に沿い、弁体２７を開動作させる方向に常時付勢される。   Accordingly, the drive coil 26 is urged and supported by the main housing 21 via the spring 39 on one end side of the bobbin 35, and is attached to the main housing 21 via the guide bar 40 and the guide hole 40 </ b> A on the other end side of the bobbin 35. It is slid and supported, and is always urged along the central axis O2 in the direction in which the valve element 27 is opened.

上記各スプリング３９は、図２に示すように、適度な弾性と強度を有する材料、例えばリン青銅、黄銅、非磁性のステンレスなどを用いて、略ヘアピン形状に成形される。スプリング３９の一端側に、コイル側位置決め穴４１及びコイル側固定部４２が互いに近傍位置に形成され、他端側に、ハウジング側位置決め穴４３及びハウジング側固定部４４が互いに近傍位置に形成される。一方、駆動コイル２６のボビン３５における一端側に一対のコイル側位置決め突起４５が、コイル側端子３８に接近して形成される。また、メインハウジング２１には、サブハウジング２２との接合面に、ハウジング側位置決め突起４６及びハウジング側端子４７が互いに接近して設けられる。   As shown in FIG. 2, each of the springs 39 is formed into a substantially hairpin shape using a material having appropriate elasticity and strength, for example, phosphor bronze, brass, nonmagnetic stainless steel, and the like. On one end side of the spring 39, the coil side positioning hole 41 and the coil side fixing portion 42 are formed in the vicinity of each other, and on the other end side, the housing side positioning hole 43 and the housing side fixing portion 44 are formed in the vicinity of each other. . On the other hand, a pair of coil side positioning projections 45 are formed close to the coil side terminal 38 on one end side of the bobbin 35 of the drive coil 26. The main housing 21 is provided with a housing-side positioning projection 46 and a housing-side terminal 47 close to each other on the joint surface with the sub-housing 22.

スプリング３９のコイル側位置決め穴４１を駆動コイル２６のコイル側位置決め突起４５に嵌合して位置決めした後、スプリング３９のコイル側固定部４２を駆動コイル２６のコイル側端子３８に半田付けなどにより固定することで、スプリング３９の一端側が駆動コイル２６に固定して取り付けられる。また、スプリング３９のハウジング側位置決め穴４３をメインハウジング２１のハウジング側位置決め突起４６に嵌合して位置決めした後、スプリング３９のハウジング側固定部４４をメインハウジング２１のハウジング側端子４７に半田付けなどにより固定することで、スプリング３９の他端側がメインハウジング２１に固定して取り付けられる。   After the coil-side positioning hole 41 of the spring 39 is fitted to the coil-side positioning protrusion 45 of the drive coil 26 and positioned, the coil-side fixing portion 42 of the spring 39 is fixed to the coil-side terminal 38 of the drive coil 26 by soldering or the like. As a result, one end of the spring 39 is fixedly attached to the drive coil 26. Further, after positioning the housing side positioning hole 43 of the spring 39 with the housing side positioning projection 46 of the main housing 21, the housing side fixing portion 44 of the spring 39 is soldered to the housing side terminal 47 of the main housing 21. The other end side of the spring 39 is fixedly attached to the main housing 21.

上述のスプリング３９は、前述の如く、弁体２７を開動作すべく駆動コイル２６に付勢力を付与する付勢部材として機能する他、駆動コイル２６に電流を流すための導通線としても機能する。つまり、上記ハウジング側端子４７は、メインハウジング２１において、サブハウジング２２との接合面から底面まで貫通して延在され、このハウジング側端子４７へ供給された電流が、スプリング３９及びコイル側端子３８を経て駆動コイル２６の導線３６へ流れ、駆動コイル２６に電磁力を発生させる。   As described above, the above-described spring 39 functions as a biasing member that applies a biasing force to the drive coil 26 to open the valve body 27, and also functions as a conduction line for flowing a current through the drive coil 26. . That is, the housing side terminal 47 extends through the main housing 21 from the joint surface with the sub housing 22 to the bottom surface, and the current supplied to the housing side terminal 47 is supplied by the spring 39 and the coil side terminal 38. Then, the electric current flows to the conductive wire 36 of the drive coil 26 to generate an electromagnetic force in the drive coil 26.

更に、一対のスプリング３９は、図３に示すように、製作時には、例えば２本の連結部４８により一体成形される。この連結部４８は、図４に示すように、スプリング３９のコイル側固定部４２を駆動コイル２６のコイル側端子３８に固定して、スプリング３９を駆動コイル２６に取り付けた後に切断可能とされる。これら一対のスプリング３９は、コイル側位置決め穴４１及びコイル側固定部４２を備えた一端側部分が連結部４８により連結される。従って、連結部４８により一体成形された一対のスプリング３９は、駆動コイル２６への取付け時に、それぞれの位置決めを同時に実施できることになる。   Further, as shown in FIG. 3, the pair of springs 39 are integrally formed by, for example, two connecting portions 48 at the time of manufacture. As shown in FIG. 4, the connecting portion 48 can be cut after the coil side fixing portion 42 of the spring 39 is fixed to the coil side terminal 38 of the drive coil 26 and the spring 39 is attached to the drive coil 26. . The pair of springs 39 are connected by a connecting portion 48 at one end portion including the coil side positioning hole 41 and the coil side fixing portion 42. Accordingly, the pair of springs 39 integrally formed by the connecting portion 48 can be positioned simultaneously when attached to the drive coil 26.

次に、血圧計用排気装置２０の作用を、図１及び図７を用いて説明する。
駆動コイル２６に所定値の電流を流すことによって、弁体２７を閉動作させる向きの電磁力を駆動コイル２６に発生させる。この状態では、電磁力がスプリング３９の付勢力に打ち勝って、弁体２７は流通口突端２９に圧接され、流通口２８を完全に閉塞（全閉）する。この状態で、ポンプ１２からカフ帯１１内へ空気が送給され、図８に示すように、カフ帯１１内は約２００ｍｍＨｇの圧力となる。 Next, the operation of the blood pressure monitor exhaust device 20 will be described with reference to FIGS. 1 and 7.
By causing a current of a predetermined value to flow through the drive coil 26, an electromagnetic force is generated in the drive coil 26 in a direction for closing the valve element 27. In this state, the electromagnetic force overcomes the biasing force of the spring 39, the valve body 27 is pressed against the flow port protrusion 29, and the flow port 28 is completely closed (fully closed). In this state, air is supplied from the pump 12 into the cuff belt 11, and the pressure in the cuff belt 11 is about 200 mmHg as shown in FIG.

その後、電動血圧計１０のカフ帯１１を徐々に減圧する減圧過程に移行するには、血圧計用排気装置２０の駆動コイル２６へ供給される電流を徐々に減少させる。すると、この電流の減少に応じて駆動コイル２６に発生する電磁力が徐々に弱まるので、駆動コイル２６は、スプリング３９の付勢力によって弁体２７を開動作する方向に徐々に移動し、弁体２７が流通口突端２９から少しずつ離れて、流通口２８が微小且つ連続的に開放される。これにより、カフ帯１１内の空気が血圧計用排気装置２０の流通口２８を経て大気中へ微速、つまり微少流量で排気され、カフ帯１１内が図８に示すように徐々に減圧される。   Thereafter, in order to shift to a decompression process in which the cuff band 11 of the electric sphygmomanometer 10 is gradually decompressed, the current supplied to the drive coil 26 of the sphygmomanometer exhaust device 20 is gradually decreased. Then, the electromagnetic force generated in the drive coil 26 gradually weakens as the current decreases, so that the drive coil 26 gradually moves in the direction of opening the valve element 27 by the biasing force of the spring 39, and the valve element 27 is gradually separated from the flow port tip 29, and the flow port 28 is opened minutely and continuously. As a result, the air in the cuff belt 11 is exhausted into the atmosphere at a very low speed, that is, at a small flow rate, through the flow port 28 of the sphygmomanometer exhaust device 20, and the inside of the cuff belt 11 is gradually decompressed as shown in FIG. .

この減圧過程でカフ帯１１内に発生する圧力脈動を圧力計１３が検出し、マイクロコンピュータ１５は、この圧力脈動の変化のプロフィールからオシロメトリック法により最高血圧及び最低血圧を算出する。   The pressure gauge 13 detects a pressure pulsation generated in the cuff zone 11 during the decompression process, and the microcomputer 15 calculates a systolic blood pressure and a diastolic blood pressure from the profile of the change in the pressure pulsation by an oscillometric method.

なお、上記構成の血圧計用排気装置２０のように、駆動コイル２６における永久磁石２５に相対する部分３４Ａのみが磁力線３３を横切って電磁力を発生し、また、駆動コイル２６のボビン３５が軸方向の一端側でのみスプリング３９により付勢力を受けるものであっても、駆動コイル２６の軸方向に沿う移動は、摺動抵抗が低くスムーズであり、弁体２７による空気の微速排気を良好に実現できる。   As in the sphygmomanometer exhaust device 20 having the above-described configuration, only the portion 34A of the drive coil 26 facing the permanent magnet 25 generates an electromagnetic force across the magnetic force line 33, and the bobbin 35 of the drive coil 26 has an axis. Even if the urging force is received by the spring 39 only at one end in the direction, the movement of the drive coil 26 along the axial direction has a low sliding resistance and is smooth, and the valve body 27 can smoothly exhaust the air at a low speed. realizable.

次に、血圧用排気装置２０の組立て手順を説明する。
まず、図３に示すように、一対のスプリング３９が連結部４８により一体化された状態で、スプリング３９のコイル側位置決め穴４１を駆動コイル２６のコイル側位置決め突起４５に嵌合して位置決めした後、スプリング３９のコイル側固定部４２を駆動コイル２６のコイル側端子３８に半田付けなどにより固定する。次に、連結部４８を折り曲げることでスプリング３９から切断し、図４に示すように、一対のスプリング３９を機械的、電気的に分離する。 Next, an assembly procedure of the blood pressure exhaust device 20 will be described.
First, as shown in FIG. 3, in a state where the pair of springs 39 are integrated by the connecting portion 48, the coil-side positioning hole 41 of the spring 39 is fitted into the coil-side positioning protrusion 45 of the drive coil 26 and positioned. Thereafter, the coil side fixing portion 42 of the spring 39 is fixed to the coil side terminal 38 of the drive coil 26 by soldering or the like. Next, the connecting portion 48 is bent and cut from the spring 39, and the pair of springs 39 are mechanically and electrically separated as shown in FIG.

次に、図５に示すように、メインハウジング２１の収納空間２３内に、永久磁石２５が固着されたヨーク２４を収納する。その後、スプリング３９が取り付けられた駆動コイル２６をメインハウジング２１の収納空間２３内に収納する。このとき、駆動コイル２６のボビン３５内にヨーク２４の他片３２を挿入させる。   Next, as shown in FIG. 5, the yoke 24 to which the permanent magnet 25 is fixed is stored in the storage space 23 of the main housing 21. Thereafter, the drive coil 26 to which the spring 39 is attached is stored in the storage space 23 of the main housing 21. At this time, the other piece 32 of the yoke 24 is inserted into the bobbin 35 of the drive coil 26.

その後、図２に示すように、スプリング３９のハウジング側位置決め穴４３をメインハウジング２１のハウジング側位置決め突起４６に嵌合して位置決めした後、スプリング３９のハウジング側固定部４４をメインハウジング２１のハウジング側端子４７に半田付けなどにより固定する。最後に、図１及び図６に示すように、サブハウジング２２をビス４９を用いてメインハウジング２１に取り付けて、血圧計用排気装置２０を完成する。   Thereafter, as shown in FIG. 2, the housing side positioning hole 43 of the spring 39 is fitted and positioned in the housing side positioning projection 46 of the main housing 21, and then the housing side fixing portion 44 of the spring 39 is moved to the housing of the main housing 21. The side terminal 47 is fixed by soldering or the like. Finally, as shown in FIGS. 1 and 6, the sub housing 22 is attached to the main housing 21 using screws 49 to complete the blood pressure monitor exhaust device 20.

さて、この血圧計用排気装置２０の弁体２７は、図９〜図１１に示すように、サブハウジング２２における流通口２８の流通口突端２９に接触する表面３７に、その全領域に亘って、同一形状の凸部５０が複数形成されている。これらの凸部５０は四角錐形状であり、一方向（図１０の横方向）及びこれに直交する他方向（図１０の縦方向）に、それぞれピッチｐ、ｔの等間隔で規則正しく形成されている。   As shown in FIGS. 9 to 11, the valve body 27 of the sphygmomanometer exhaust device 20 covers the entire surface of the surface 37 that contacts the flow port protrusion 29 of the flow port 28 in the sub-housing 22. A plurality of convex portions 50 having the same shape are formed. These convex portions 50 have a quadrangular pyramid shape, and are regularly formed at equal intervals of pitches p and t in one direction (the horizontal direction in FIG. 10) and the other direction (vertical direction in FIG. 10) orthogonal thereto. Yes.

なお、これらのピッチｐとピッチｔは、本実施の形態では同一寸法であるが、異なった寸法であってもよい。また、図１０中のハッチング部分は、弁体２７の表面３７において、流通口突端２９が対向し接触する箇所Ｓを示す。   The pitch p and the pitch t are the same in this embodiment, but may be different. Moreover, the hatching part in FIG. 10 shows the location S where the flow port tip 29 faces and contacts on the surface 37 of the valve element 27.

上記複数の凸部５０は、例えば、平坦形状の弁体２７の表面に、機械加工により、互いに直交する方向に複数本のＶ溝を切削することによって形成することができる。また、これら複数の凸部５０は、弁体２７の成形時に型によって一体に成形することもできる。また、上記Ｖ溝の溝角度θ（図１１）は例えばθ＝６０度である。また、上記凸部５０は、図１１に示すように、流通口２８の軸心、つまり流通口突端２９の軸心Ｏ３を通る縦断面における片側（寸法ｋ）に２個以上が接触するような分布をもって、弁体２７の表面３７に形成されている。上記軸心Ｏ３は、前述の如く弁体２７の軸心Ｏ１と一致している。   The plurality of convex portions 50 can be formed, for example, by cutting a plurality of V grooves in a direction orthogonal to each other by machining on the surface of the flat valve body 27. Further, the plurality of convex portions 50 can be integrally formed by a mold when the valve body 27 is formed. Further, the groove angle θ (FIG. 11) of the V groove is, for example, θ = 60 degrees. Further, as shown in FIG. 11, two or more convex portions 50 are in contact with one side (dimension k) in a longitudinal section passing through the axial center of the flow port 28, that is, the axial center O3 of the flow port protruding end 29. A distribution 37 is formed on the surface 37 of the valve body 27. The axis O3 coincides with the axis O1 of the valve body 27 as described above.

弁体２７の表面３７では、図９に示すように、複数の凸部５０に隣接して連通状態の凹部５１が形成される。この凹部５１は、弁体２７の凸部５０が流通口突端２９に接触したときに、この流通口突端２９との間で流路を形成する役目を果たす。流通口２８内の空気は、弁体２７の凸部５０が流通口突端２９に接触した状態では、上記流路を通って血圧計用排気装置２０内に流入し、そのサブハウジング２２の連通口３０（図６参照）から大気中へ排出される。
In the surface 37 of the valve body 27, as shown in FIG. 9, the recessed part 51 of the communication state is formed adjacent to the some convex part 50. As shown in FIG. The concave portion 51 serves to form a flow path with the flow port protruding end 29 when the convex portion 50 of the valve body 27 comes into contact with the flow port protruding end 29. The air in the circulation port 28 flows into the sphygmomanometer exhaust device 20 through the flow path in a state where the convex portion 50 of the valve body 27 is in contact with the circulation port protrusion 29, and the communication port of the sub-housing 22. 30 (see FIG. 6) is discharged into the atmosphere.

弁体２７が軸方向に移動して、その複数の凸部５０が流通口突端２９に圧接または離反して変形すると、この変形した凸部５０に隣接する凹部５１もその容積が変化し、この凹部５１により形成される流路の流量面積が変化する。従って、弁体２７を、凸部５０が流通口突端２９に接触した位置から凸部５０の高さｈ（図１１；例えばｈ＝０．０８ｍｍ）の範囲内で軸方向に移動させると、凸部５０の変形により上記流量面積が微小に変化し、この流路を通りサブハウジング２２の電通口３０から大気中へ排出される空気の流量を微少調節することが可能となり、カフ帯１１内の減圧が微調整される。   When the valve body 27 moves in the axial direction and the plurality of convex portions 50 are deformed by being pressed against or separated from the flow port protrusion 29, the volume of the concave portion 51 adjacent to the deformed convex portion 50 also changes. The flow area of the flow path formed by the recess 51 changes. Accordingly, when the valve body 27 is moved in the axial direction within the range of the height h of the convex portion 50 (FIG. 11; for example, h = 0.08 mm) from the position where the convex portion 50 contacts the flow port protrusion 29, the convex portion The flow area is slightly changed by the deformation of the portion 50, and the flow rate of the air discharged through the flow path 30 of the sub-housing 22 into the atmosphere can be finely adjusted. The decompression is fine tuned.

このとき、弁体２７の複数の凸部５０が同一形状で且つ規則正しく形成されているので、弁体２７が軸方向に移動してこれらの凸部５０が流通口突端２９に圧接または離反して変形したとき、この変形した複数の凸部５０の変形量は、流通口突端に対向し接触する箇所Ｓ（図１０）において同一となる。このため、これらの変形した凸部５０に隣接する凹部５１の容積変化量も、流通口突端２９に対向し接触する箇所Ｓにおいて同一となり、この凹部５１と流通口突端２９により形成される流路の流量面積の変化量も、流通口突端２９に対向し接触する箇所Ｓにおいて同一となる。このように、弁体２７の軸方向移動量に対して、上記流路の流路面積の変化量が流通口突端２９に対向し接触する箇所Ｓにおいて同一となるので、弁体２７の軸方向移動量を制御することによって、流通口突端２９と凹部５１により形成される上記流路を流れる空気の微少流量を高精度に調節でき、高精度な血圧計を製造することができる。   At this time, since the plurality of convex portions 50 of the valve body 27 have the same shape and are regularly formed, the valve body 27 moves in the axial direction so that these convex portions 50 are pressed against or separated from the flow port projection end 29. When deformed, the amount of deformation of the deformed plurality of convex portions 50 is the same at the location S (FIG. 10) that faces and contacts the flow outlet tip. For this reason, the volume change amount of the concave portion 51 adjacent to the deformed convex portion 50 is also the same in the portion S facing and in contact with the flow port protruding end 29, and the flow path formed by the concave portion 51 and the flow port protruding end 29. The amount of change in the flow area is also the same at the location S that faces and contacts the flow outlet tip 29. Thus, since the amount of change in the flow path area of the flow path is the same in the portion S facing and in contact with the flow port protrusion 29 with respect to the axial movement amount of the valve body 27, the axial direction of the valve body 27 By controlling the amount of movement, the minute flow rate of the air flowing through the flow path formed by the flow port tip 29 and the recess 51 can be adjusted with high accuracy, and a highly accurate blood pressure monitor can be manufactured.

以上、本発明を上記実施の形態に基づいて説明したが、本発明はこれに限定されるものではない。
例えば、上記実施の形態では、弁体２７の表面３７の全領域に凸部５０が形成されたものを述べたが、この凸部５０は、弁体２７の表面３７において少なくとも流通口突端２９が対向して接触する箇所Ｓに形成されていればよい。 As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this.
For example, in the above-described embodiment, the convex portion 50 is formed in the entire area of the surface 37 of the valve body 27, but the convex portion 50 has at least the flow port protrusion 29 on the surface 37 of the valve body 27. What is necessary is just to be formed in the location S which opposes and contacts.

また、上記弁体２７の凸部５０は、図１２に示すように、流通口突端２９の軸心Ｏ３を通る縦断面における片側（寸法ｋ）に１個以上が接触するような分布で弁体２７の表面３７に形成されてもよい。   Further, as shown in FIG. 12, the convex portion 50 of the valve body 27 is distributed so that one or more contacts one side (dimension k) in the longitudinal section passing through the axial center O3 of the flow port protrusion 29. 27 may be formed on the surface 37.

更に、弁体２７における同一形状の複数の凸部５０は、本実施の形態では、弁体２７の表面３７に規則正しく等間隔に形成されるものを述べたが、弁体２７の表面３７にランダム（不規則）に形成されてもよい。   Furthermore, in the present embodiment, the plurality of convex portions 50 having the same shape in the valve body 27 are formed on the surface 37 of the valve body 27 at regular intervals. (Irregular) may be formed.

また、弁体２７の凸部５０は、三角錐体や円錐体であってもよく、図１３に示すように、半球体（図１３（Ａ））、円柱体または角柱体（図１３（Ｂ））であってもよい。   Moreover, the convex part 50 of the valve body 27 may be a triangular pyramid or a cone, and as shown in FIG. 13, a hemisphere (FIG. 13A), a cylinder or a prism (FIG. 13B). )).

更に、この凸部５０は、内側に湾曲した曲面を有する錐体（図１３（Ｃ））、円錐台または角錐台（図１３（Ｄ））、または先端に向かって横断面積が徐々に増大する立体形状（図１３（Ｅ））であってもよい。   Furthermore, the convex portion 50 gradually increases in cross-sectional area toward a cone having a curved surface curved inward (FIG. 13C), a truncated cone or a truncated pyramid (FIG. 13D), or a tip. It may be a three-dimensional shape (FIG. 13E).

また、上記実施の形態では、各凸部５０が、弁体２７の表面３７上の縦横方向に独立した形状（独立した突起状）である場合について示したが、図１４に例示する凸部５０Ｂのように、弁体２７の表面３７上の一方向に同じ断面で連続した凸条として形成してもよい。この場合も、凸条として形成した複数条の凸部５０Ｂは、互いに平行に一定のピッチで配列されている。なお、凸部５０Ｂの断面形状は、三角形、半円形、矩形等、任意である。   Moreover, in the said embodiment, although the case where each convex part 50 was the shape (independent protrusion shape) independent in the vertical / horizontal direction on the surface 37 of the valve body 27 was shown, convex part 50B illustrated in FIG. As described above, it may be formed as a ridge that is continuous in one direction on the surface 37 of the valve element 27 in the same cross section. Also in this case, the plurality of protrusions 50B formed as protrusions are arranged in parallel with each other at a constant pitch. In addition, the cross-sectional shape of the convex part 50B is arbitrary, such as a triangle, a semicircle, and a rectangle.

また、上記実施の形態では、流量調節装置を血圧計用排気装置２０として使用する場合を述べたが、流量調節装置を血圧計用排気装置２０以外の一般的用途において使用してもよく、この場合には、スプリング３９による付勢力の作用で弁体３７を閉動作させる方向に駆動コイル２８を付勢し、また、この駆動コイル２８に発生する電磁力の作用で、弁体３７を開動作するように構成してもよい。   Further, in the above embodiment, the case where the flow control device is used as the sphygmomanometer exhaust device 20 has been described. However, the flow control device may be used for general purposes other than the sphygmomanometer exhaust device 20. In this case, the drive coil 28 is urged in the direction in which the valve element 37 is closed by the action of the urging force of the spring 39, and the valve element 37 is opened by the action of the electromagnetic force generated in the drive coil 28. You may comprise.

本発明に係る流量調節装置の一実施の形態である血圧計用排気装置を示す断面図である。It is sectional drawing which shows the exhaust apparatus for blood pressure monitors which is one Embodiment of the flow control apparatus which concerns on this invention. 図１の血圧計用排気装置において、サブハウジングを除いて示す斜視図である。FIG. 2 is a perspective view showing the sphygmomanometer exhaust device of FIG. 1 excluding a sub-housing. 図１のスプリング及び駆動コイルにおいて、一対のスプリングを駆動コイルに固定した直後の状態を示す斜視図である。FIG. 2 is a perspective view showing a state immediately after a pair of springs are fixed to a drive coil in the spring and the drive coil of FIG. 1. 図１のスプリング及び駆動コイルにおいて、一対のスプリングから連結部を切断した状態を示す斜視図である。FIG. 2 is a perspective view showing a state in which a connecting portion is cut from a pair of springs in the spring and the drive coil of FIG. 1. 一対のスプリングが取り付けられた駆動コイルをメインハウジング内に収納する状態を示す斜視図である。It is a perspective view which shows the state which accommodates the drive coil to which a pair of spring was attached in the main housing. 図１の血圧計用排気装置を示す分解斜視図である。It is a disassembled perspective view which shows the exhaust apparatus for blood pressure monitors of FIG. 図１の血圧計用排気装置を用いた電動血圧計を示す構成図である。It is a block diagram which shows the electric blood pressure monitor using the exhaust apparatus for blood pressure monitors of FIG. 血圧測定時におけるカフ帯内の圧力変化を示すグラフである。It is a graph which shows the pressure change in the cuff belt at the time of blood pressure measurement. 図１における弁体を示す斜視図である。It is a perspective view which shows the valve body in FIG. 図９の弁体を示す平面図である。It is a top view which shows the valve body of FIG. 図１の弁体が流通口突端に接触した状態を示す断面図である。It is sectional drawing which shows the state which the valve body of FIG. 1 contacted the circulation port protrusion end. 流通口突端に接触した弁体の他の例を示す断面図である。It is sectional drawing which shows the other example of the valve body which contacted the circulation port protrusion. 弁体における凸部の変形例を示す側面図である。It is a side view which shows the modification of the convex part in a valve body. 弁体における凸部の変形例を示す側面図である。It is a side view which shows the modification of the convex part in a valve body.

符号の説明Explanation of symbols

２０ 血圧計用排気装置（流量調節装置）
２１ メインハウジング
２２ サブハウジング
２６ 駆動コイル
２７ 弁体
２８ 流通口
２９ 流通口突端
３７ 表面
５０，５０Ｂ 凸部
５１ 凹部
Ｏ１ 弁体の軸心 20 Exhaust device for blood pressure monitor (flow control device)
21 Main housing 22 Sub housing 26 Drive coil 27 Valve body 28 Flow port 29 Flow port protruding end 37 Surface 50, 50B Protrusion 51 Recess O1 Axle of valve body

Claims (10)

流体が流通口から流れ出る流通口突端に表面が圧接または離反して、上記流通口を閉動作または開動作する弁体において、
上記表面には、少なくとも上記流通口突端に接触する箇所に同一形状の凸部が複数形成されたことを特徴とする弁体。 In the valve body in which the surface is pressed against or separated from the tip of the flow port from which the fluid flows out from the flow port, and the flow port is closed or opened,
The valve body according to claim 1, wherein a plurality of convex portions having the same shape are formed on the surface at least at a location in contact with the tip of the flow port. 流体が流通口から流れ出る流通口突端に表面が圧接または離反して、上記流通口を閉動作または開動作する弁体において、
上記表面には、少なくとも上記流通口突端に接触する箇所に凸部が複数形成され、上記凸部は、表面において、少なくとも流通口突端に接触する箇所に規則正しく配置されたことを特徴とする弁体。 In the valve body in which the surface is pressed against or separated from the tip of the flow port from which the fluid flows out from the flow port, and the flow port is closed or opened,
A plurality of convex portions are formed on the surface at least at a location that contacts the tip of the flow port, and the convex portions are regularly arranged on the surface at least at a location that contacts the tip of the flow port. . 上記凸部は、流通口突端の軸線を通る縦断面における片側に、２個以上接触する状態で形成されたことを特徴とする請求項１または２に記載の弁体。   3. The valve body according to claim 1, wherein two or more of the convex portions are in contact with each other on one side in a longitudinal section passing through the axis of the flow port protrusion end. 上記凸部が、縦横方向に独立した錐体、半球体、柱体等の突起として、または、一方向に同断面で連続した凸条として形成されていることを特徴とする請求項１乃至３のいずれかに記載の弁体。   The said convex part is formed as protrusions, such as a cone, a hemisphere, and a column which became independent in the vertical and horizontal directions, or as a convex line which continued in the same cross section in one direction. The valve body according to any one of the above. 流体が流れる流通口が形成されると共に、この流通口から流体が流れ出る流通口突端が形成されたハウジングと、
このハウジング内に配設され、表面が上記流通口突端に圧接または離反することで上記流通口を閉動作または開動作して、当該流通口内を流れる流体の流量を調節する弁体と、
上記ハウジング内に配設され、上記弁体をその軸心に沿って駆動して閉動作または開動作させる駆動装置とを有する流量調節装置において、
上記弁体の上記表面には、少なくとも上記流通口突端に接触する箇所に同一形状の凸部が複数形成されたことを特徴とする流量調節装置。 A housing in which a flow port through which the fluid flows is formed, and a flow port protruding end from which the fluid flows out from the flow port,
A valve body that is disposed in the housing and has a surface that presses or separates from the tip of the flow port to close or open the flow port to adjust the flow rate of the fluid flowing in the flow port;
A flow rate adjusting device having a drive device disposed in the housing and driving the valve body along its axis to perform a closing operation or an opening operation;
On the surface of the valve body, a plurality of convex portions having the same shape are formed at least at a location in contact with the tip of the flow port. 上記弁体の凸部は、表面において、少なくとも流通口突端に接触する箇所に規則正しく配置されたことを特徴とする請求項５に記載の流量調節装置。   The flow rate adjusting device according to claim 5, wherein the convex portions of the valve body are regularly arranged on the surface at least at locations where the convex portions come into contact with the tip of the flow port. 上記弁体の凸部は、流通口突端の軸線を通る縦断面における片側に、２個以上接触する状態で形成されたことを特徴とする請求項５または６に記載の流量調節装置。   7. The flow rate adjusting device according to claim 5, wherein two or more convex portions of the valve body are formed in contact with each other on one side in a longitudinal section passing through the axis of the flow port protruding end. 上記凸部が、縦横方向に独立した錐体、半球体、柱体等の突起として、または、一方向に同断面で連続した凸条として形成されていることを特徴とする請求項５乃至７のいずれかに記載の流量調節装置。   The said convex part is formed as protrusions, such as a cone, a hemisphere, a pillar, etc. which became independent in the vertical and horizontal directions, or as a convex line | wire continuous in the same cross section in one direction. The flow volume control apparatus in any one of. 人体の腕や手首などの部位に巻き付けられるカフ帯内に供給された空気を排出する
血圧計用排気装置として使用されることを特徴とする請求項５乃至８のいずれかに記載の流量調節装置。 9. The flow rate control device according to claim 5, wherein the flow rate control device is used as an exhaust device for a sphygmomanometer that discharges air supplied in a cuff belt wound around a part such as an arm or wrist of a human body. . 請求項５乃至９のいずれかに記載の流量調節装置を用いたことを特徴とする血圧計。   A blood pressure monitor using the flow control device according to any one of claims 5 to 9.
JP2004174380A 2003-10-31 2004-06-11 Valve element, and flow rate adjusting device and blood-pressure meter comprising valve element Pending JP2005155898A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847743A2 (en) * 2006-04-11 2007-10-24 Japan Precision Instruments Inc. Electric-powered air release valve and blood pressure gauge
JP2013009773A (en) * 2011-06-28 2013-01-17 A & D Co Ltd Exhaust valve of automatic blood pressure measuring apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847743A2 (en) * 2006-04-11 2007-10-24 Japan Precision Instruments Inc. Electric-powered air release valve and blood pressure gauge
EP1847743A3 (en) * 2006-04-11 2009-12-02 Japan Precision Instruments Inc. Electric-powered air release valve and blood pressure gauge
US8096952B2 (en) 2006-04-11 2012-01-17 Japan Precision Instruments, Inc. Electric-powered air release valve and blood pressure gauge
JP2013009773A (en) * 2011-06-28 2013-01-17 A & D Co Ltd Exhaust valve of automatic blood pressure measuring apparatus

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