JP2009047121A - Valve and variable displacement pump with valve - Google Patents

Valve and variable displacement pump with valve Download PDF

Info

Publication number
JP2009047121A
JP2009047121A JP2007215704A JP2007215704A JP2009047121A JP 2009047121 A JP2009047121 A JP 2009047121A JP 2007215704 A JP2007215704 A JP 2007215704A JP 2007215704 A JP2007215704 A JP 2007215704A JP 2009047121 A JP2009047121 A JP 2009047121A
Authority
JP
Japan
Prior art keywords
valve
molded body
outer peripheral
pump
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2007215704A
Other languages
Japanese (ja)
Other versions
JP5156899B2 (en
Inventor
Tetsuo Owada
哲夫 大和田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Namiki Precision Jewel Co Ltd
Original Assignee
Namiki Precision Jewel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Namiki Precision Jewel Co Ltd filed Critical Namiki Precision Jewel Co Ltd
Priority to JP2007215704A priority Critical patent/JP5156899B2/en
Publication of JP2009047121A publication Critical patent/JP2009047121A/en
Application granted granted Critical
Publication of JP5156899B2 publication Critical patent/JP5156899B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve suitable for back-flow prevention by preventing deflection of a valve surface in a small variable displacement pump and to provide the variable displacement pump using it. <P>SOLUTION: The deflection is caused when an outer peripheral seal part 14 of a valve mold body molded of a flexible material such as rubber is caught and fixed in an inner structure of the variable displacement pump. The variable displacement pump has a construction that an arm 15 connecting the valve surface 13 and the outer peripheral part 14 in the valve mold body is formed in a shape having a through-hole 18 and a curved part 16, the deflection is absorbed by the arm 15 and the deflection is prevented from being transmitted to the valve surface 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ダイアフラムポンプ等におけるバルブ、およびそのバルブを有する小型の容積変動型のマイクロポンプに関する。   The present invention relates to a valve in a diaphragm pump or the like, and a small volume variation type micro pump having the valve.

従来、容積変動型ポンプとしては、ピストンやダイアフラム等を用いたものが一般的に知られているが、なかでも、微量な液体を送液するマイクロポンプには数多くの機構原理が存在し、例えば弁機構においてはリードバルブ型、バルブレス型などがあり、又、駆動系では小型モータを用いたダイアフラム型、ピストン型などの機構を有するマイクロポンプが以前から一般的に知られている。 Conventionally, as a volume-variable pump, a pump using a piston, a diaphragm, or the like is generally known, but among them, a micropump for feeding a small amount of liquid has many mechanism principles, for example, There are a reed valve type and a valveless type in the valve mechanism, and a micropump having a mechanism such as a diaphragm type and a piston type using a small motor in the drive system has been generally known.

この種のマイクロポンプは、医療機器及び化学分析機器の微量流体供給装置として、薬液の定量注入や反応混合ガス等の流体物を搬送するために用いられ、現在、より高精度な制御ができる小型で汎用性のあるマイクロポンプの開発が進められている。   This type of micropump is used as a microfluid supply device for medical equipment and chemical analysis equipment, and is used for transporting fluids such as quantitative injection of chemicals and reaction gas mixtures, and is now a compact that can be controlled with higher accuracy. The development of versatile micro pumps is underway.

このような容積変動型のマイクロポンプにおいて、ダイアフラム等の可動部材が往復駆動し、その可動部材によりポンプ室が形成され、該ポンプ室に流体を給排する吸込弁及び吐出弁が設けられたもののバルブ成形体として、以下に挙げられるようなバルブ構造がある（特許文献１）。   In such a volume variation type micro pump, a movable member such as a diaphragm is reciprocally driven, a pump chamber is formed by the movable member, and a suction valve and a discharge valve for supplying and discharging fluid are provided in the pump chamber. As a valve molded body, there is a valve structure as described below (Patent Document 1).

これは、上記弁の機能をするバルブ成形体の外周部が、受け部材の間に挟着固定されることによりシール部を兼ねるように弾性材から形成された円環状厚肉部と、バルブ成形体の中央に位置し、開閉弁となる凸部、該凸部と外周部をつなぎ、弁の開閉時に可動する薄肉アーム部とから構成されてなることを特徴とするポンプの弁構造である。   This is because the outer peripheral portion of the valve molded body that functions as the valve is sandwiched and fixed between the receiving members so that it also serves as a seal portion, and an annular thick portion formed from an elastic material, A pump valve structure characterized by comprising a convex portion serving as an on-off valve, a thin arm portion that connects the convex portion and the outer peripheral portion and is movable when the valve is opened and closed.

上記従来技術に係るバルブ構造によれば、流体を吸入出する孔の開閉を行う凸部の全周が、前記孔の周縁部に対して、リング状に線接触状態となるため、逆止弁としての流体の逆流遮断がより優れ、高精度な制御ができるという効果を有するものであった。
特開２００１−１２３５６ According to the valve structure according to the prior art, the entire circumference of the convex portion that opens and closes the hole for sucking and discharging the fluid is in a line contact state in a ring shape with respect to the peripheral portion of the hole. As a result, the reverse flow blocking of the fluid is more excellent, and it has the effect that highly accurate control can be performed.
JP2001-12356

しかしながら、従来タイプのダイアフラム型マイクロポンプにおけるバルブ構造では、液漏れ防止等のシーリング効果を得るために、バルブの組込時にバルブ外周部をポンプ部材にて挟み込み、圧縮変形させて固定していた。このとき、より高いシーリング効果を得るためには、挟着部の圧縮応力をより大きくする必要があった。   However, in the valve structure of the conventional diaphragm type micro pump, in order to obtain a sealing effect such as prevention of liquid leakage, the outer peripheral portion of the valve is sandwiched between pump members when the valve is assembled, and is compressed and fixed. At this time, in order to obtain a higher sealing effect, it was necessary to increase the compressive stress of the sandwiched portion.

また、バルブ外周部を縦方向に圧縮変形させると、バルブ外周部がポアソン比に従って横方向に伸びが生じてしまう。これにより、例えば図５（ｂ）の斜視図で示されるようにバルブ部に歪みが生じてしまう。   Further, when the outer peripheral portion of the valve is compressed and deformed in the vertical direction, the outer peripheral portion of the valve is elongated in the lateral direction according to the Poisson's ratio. Thereby, for example, as shown in the perspective view of FIG.

このバルブ部の歪みの影響は、ポンプの小型化によるバルブのさらなる小型化、薄型化で、より顕著に現れる。   The influence of the distortion of the valve portion appears more prominently when the valve is further downsized and thinned by downsizing the pump.

このバルブ部の歪みにより、バルブの逆止弁機構の低下によるポンプの流量精度の低下等の問題が発生する場合がある。   Due to the distortion of the valve portion, problems such as a decrease in the flow rate accuracy of the pump due to a decrease in the check valve mechanism of the valve may occur.

したがって、本発明は、上記の問題点を解決し、バルブ構造を簡易化し、バルブ部に歪みを生じさせることなく、さらなる小型化、薄型化を可能としたバルブ構造を有する容積変動型ポンプを提供することを目的とする。   Accordingly, the present invention provides a volume variable pump having a valve structure that solves the above-described problems, simplifies the valve structure, and enables further miniaturization and thickness reduction without causing distortion in the valve portion. The purpose is to do.

請求項１記載の発明は、吸引口と吐出口を有し、ダイアフラムやピストン等の往復運動によってポンプ室内外に圧力差を発生させる容積変動型ポンプの可撓性材料により成形されたバルブ成形体において、バルブ面とバルブ成形体の外周部をつなぐアームが、バルブ面とバルブ成形体の外周部のどちらか一方で複数に分かれて連結されていることを特徴とするバルブ成形体である。 The invention according to claim 1 is a valve molded body having a suction port and a discharge port and formed of a flexible material of a variable volume pump that generates a pressure difference inside and outside the pump chamber by a reciprocating motion of a diaphragm or a piston. The valve molded body is characterized in that the arm connecting the valve surface and the outer peripheral portion of the valve molded body is divided and connected to one of either the valve surface and the outer peripheral portion of the valve molded body.

請求項２記載の発明は、請求項１に記載のバルブ成形体において、バルブ面とバルブ外周部をつなぐ複数のアームが湾曲部を有する形状であることを特徴とするバルブ成形体である。   A second aspect of the present invention is the valve molded body according to the first aspect, wherein a plurality of arms connecting the valve surface and the valve outer peripheral portion have a curved portion.

請求項３記載の発明は、請求項１又は請求項２のいずれかに記載のバルブ成形体において、少なくとも２個以上、前記バルブ面の向きが逆の状態で隣接して一体成形されていることを特徴とした容積変動型ポンプである。 According to a third aspect of the present invention, in the valve molded body according to any one of the first or second aspects, at least two or more of them are integrally molded adjacent to each other with the direction of the valve surface being reversed. This is a volume variation pump characterized by the following.

請求項４記載の発明は、請求項１〜請求項３のいずれかに記載のバルブ成形体を有することを特徴とした容積変動型ポンプである。 According to a fourth aspect of the present invention, there is provided a variable volume pump comprising the valve molded body according to any one of the first to third aspects.

本発明では、可撓性材料からなるバルブ成形体において、バルブ面とバルブ成形体の外周部をつなぐ各アームの片側が複数に分かれて連結されていることにより、バルブ成形体をシール部である外周部で挟着固定する際に発生する撓みをアームが吸収することで、バルブ面に伝達される撓みを低減することが可能となる。   In the present invention, in the valve molded body made of a flexible material, one side of each arm connecting the valve surface and the outer peripheral portion of the valve molded body is divided and connected, so that the valve molded body is a seal portion. Since the arm absorbs the bending that occurs when the outer periphery is clamped and fixed, the bending transmitted to the valve surface can be reduced.

また、アームの形状を湾曲部を有する形状とすることにより、撓みを吸収する緩衝部としての機能が更に向上する。   Moreover, the function as a buffer part which absorbs bending further improves by making the shape of an arm into the shape which has a curved part.

本発明のバルブ成形体は、バルブ面と外周部及び複数のアームからなる部分を１つのユニットとして、複数のユニットを一体成形した場合であっても同様の効果を奏する。また、このときのポンプの形式は問わない。 The valve molded body of the present invention achieves the same effect even when a plurality of units are integrally molded with the valve surface, the outer peripheral portion, and a portion composed of a plurality of arms as one unit. Moreover, the form of the pump at this time does not matter.

以下、本発明の最良の形態に係る容積変動型ポンプ及びそれが有するバルブ形状について、添付図面を参照して説明する。   Hereinafter, a volume-variable pump according to the best mode of the present invention and a valve shape thereof will be described with reference to the accompanying drawings.

図１に本発明に係る容積変動型ポンプ１の断面図を示す。これは駆動源出力軸２の回転力によりコネクティングスライダ３が上下運動する。このとき前記コネクティングスライダ３に固定されたダイアフラム４も上下運動し、ポンプ室５にかかる圧力の変動によりポンプ動作を行うものである。   FIG. 1 shows a cross-sectional view of a variable volume pump 1 according to the present invention. This is because the connecting slider 3 moves up and down by the rotational force of the drive source output shaft 2. At this time, the diaphragm 4 fixed to the connecting slider 3 also moves up and down, and performs a pump operation by fluctuations in pressure applied to the pump chamber 5.

図２（ａ）は本発明の最良の形態であるバルブ成形体１０の上面図である。更にバルブ成形体のＡ−Ａ断面を図２（ｂ）に示す。   FIG. 2A is a top view of the valve molded body 10 which is the best mode of the present invention. Furthermore, the AA cross section of a valve molded object is shown in FIG.2 (b).

前記バルブ成形体１０は、バルブ面１３とバルブ外周部１４とアーム１５からなり、バルブ面１３とバルブ外周部１４をつなぐ同一形状のアーム１５が、バルブ外周部の３箇所から伸びた状態から２つに分かれて、計６箇所でバルブ面につながっており、その結果として湾曲部と曲率を持った貫通孔をアーム１５に有するバルブを形成し、そのバルブのバルブ面の向きが逆の状態で隣接して一体成形した形状である。   The valve molded body 10 includes a valve surface 13, a valve outer peripheral portion 14, and an arm 15, and an arm 15 having the same shape that connects the valve surface 13 and the valve outer peripheral portion 14 extends from three locations on the valve outer peripheral portion. As a result, a valve having a curved portion and a through hole with a curvature in the arm 15 is formed, and the valve surface of the valve is in the reverse direction. Adjacent and integrally molded.

前記バルブ成形体１０を前記容積変動型ポンプ１に組込むときに、バルブ成形体のバルブ外周部（シール部）１４がバルブヘッド６により押し込まれ、圧縮変形することにより、前記バルブヘッド６とバルブケース７からの液漏れ等を防止することが可能となる。   When the valve molded body 10 is assembled into the variable volume pump 1, the valve outer peripheral portion (seal portion) 14 of the valve molded body is pushed by the valve head 6 and is compressed and deformed. It becomes possible to prevent the liquid leakage from 7 or the like.

さらに、貫通孔及び外周が湾曲形状を有するアーム１５が緩衝部として機能することにより、バルブ外周部１４の圧縮変形により生じる撓みを吸収し、バルブ面１３の歪みを低減することが可能となる。 Further, the arm 15 having a curved shape in the through hole and the outer periphery functions as a buffer portion, so that it is possible to absorb the bending caused by the compression deformation of the valve outer peripheral portion 14 and reduce the distortion of the valve surface 13.

図３（ａ）は、本発明の最良の形態であり、図２（ａ）で上面図を示したバルブ成形体１０の斜視図である。 また、図５（ａ）は、本発明におけるバルブ成形体の特徴を有しない、従来のバルブ成形体の一例の斜視図である。   FIG. 3A is a perspective view of the valve molded body 10 which is the best mode of the present invention and whose top view is shown in FIG. FIG. 5A is a perspective view of an example of a conventional valve molded body that does not have the characteristics of the valve molded body according to the present invention.

図３（ｂ）は、図３（ａ）のバルブ成形体において、材質にゴム部材を使用し、１つのユニットとしてのバルブ外周部の外径をφ5.4mm、バルブ外周部の厚さを1mm、バルブ面の外径をφ2mm、アームの厚さを0.4mmとして、外周部を最大まで圧縮した場合の、バルブ成形体の撓み方を解析ソフトウェアでのシュミレーションにより示した斜視図である。   Fig. 3 (b) shows the valve molded body of Fig. 3 (a) using a rubber member. The outer diameter of the valve outer periphery as one unit is φ5.4mm, and the thickness of the valve outer periphery is 1mm. FIG. 5 is a perspective view showing how the valve molded body is bent by simulation using analysis software when the outer diameter of the valve surface is φ2 mm, the thickness of the arm is 0.4 mm, and the outer peripheral portion is compressed to the maximum.

同様に図５（ｂ）は、図５（ａ）のバルブ成形体をアームの形状以外は図３（ｂ）と同様の条件にてバルブ外周部を最大まで圧縮した場合のバルブ成形体の撓み方をシュミレーションにより示した斜視図である。   Similarly, FIG. 5B shows the deflection of the valve molded body when the valve outer periphery of the valve molded body of FIG. 5A is compressed to the maximum under the same conditions as in FIG. 3B except for the shape of the arm. It is the perspective view which showed the direction by simulation.

図３（ｂ）と、図５（ｂ）との比較により、本発明の実施例であるバルブ成形体はアームの緩衝部で撓みを吸収し、バルブ面は歪んでいないのに対し、従来のバルブ成形体の一例では、アームを介してバルブ面に伝わっていることがわかる。   By comparing FIG. 3B and FIG. 5B, the valve molded body according to the embodiment of the present invention absorbs the deflection at the buffer portion of the arm, and the valve surface is not distorted. In one example of the valve molded body, it can be seen that it is transmitted to the valve surface via the arm.

具体的には、本発明の実施例である図３（ｂ）の場合には、バルブ外周部の圧縮により生じる撓みによるバルブ面の移動量が大きくとも2.173×10−４mm以下であるのに対し、従来例である図５（ｂ）の場合には、バルブ面の移動量が小さくとも6.517×10−４mm以上であることがシュミレーションの結果として確認されている。 Specifically, in the case of FIG. 3B, which is an embodiment of the present invention, the amount of movement of the valve surface due to the bending caused by the compression of the outer peripheral portion of the valve is at most 2.173 × 10 −4 mm. On the other hand, in the case of FIG. 5B which is a conventional example, it is confirmed as a result of the simulation that the movement amount of the valve surface is at least 6.517 × 10 −4 mm or more.

尚、本発明において、上記の実施例が最良の形態であるが、例えば図４（ａ）に示すようなバルブ面とバルブ外周部をつなぐアームを、片側２箇所からのびて、４箇所で連結したもの、或いはバルブ面とバルブ外周部のどちらか一方の４箇所以上から伸びたアームが更に複数に分かれて、もう一方に連結したものでも構わない。図４（ａ）の実施例のＢ−Ｂ断面を図４（ｂ）に示す。   In the present invention, the above embodiment is the best mode. For example, as shown in FIG. 4A, an arm connecting the valve surface and the valve outer peripheral portion extends from two places on one side and is connected at four places. The arm extended from four or more of either one of the valve surface and the valve outer peripheral part may be further divided into a plurality and connected to the other. FIG. 4B shows a BB cross section of the embodiment of FIG.

また、本発明において、バルブ面とバルブ外周部をつなぐアームの外形状及び、アームの貫通孔の形状と貫通孔の数は、上記の実施例に示されるものには限定されない。   In the present invention, the outer shape of the arm connecting the valve surface and the valve outer peripheral portion, the shape of the through hole of the arm and the number of the through holes are not limited to those shown in the above embodiments.

また、バルブ外周部の圧縮変形により生じる撓みを吸収できる貫通孔を有するアームの形状であれば本発明のバルブ成形体に含まれる。   Further, any shape of the arm having a through hole capable of absorbing the bending caused by the compression deformation of the outer peripheral portion of the valve is included in the valve molded body of the present invention.

また、本発明はこれら図２〜図４に示すバルブの組込まれた、図１に示すような容積変動型ポンプを含むものとする。   Further, the present invention includes a volume-variable pump as shown in FIG. 1 in which the valves shown in FIGS. 2 to 4 are incorporated.

本発明は、バルブに発生する歪みを低減することができるため、バルブ機能の信頼性向上が可能となり、医療機器や化学分析機器等に用いる為の小型微量流体供給装置として、利用可能となる。   The present invention can reduce the distortion generated in the valve, so that the reliability of the valve function can be improved, and can be used as a small-scale trace fluid supply device for use in medical equipment, chemical analysis equipment, and the like.

本発明の最良の形態に係る容積変動型ポンプ１の断面図である。1 is a cross-sectional view of a variable volume pump 1 according to the best mode of the present invention. （ａ）本発明の最良の形態に係るバルブ形状をしめす上面図である。 （ｂ）（ａ）におけるＡ−Ａ断面図である。(A) It is a top view which shows the valve | bulb shape which concerns on the best form of this invention. (B) It is AA sectional drawing in (a). （ａ）本発明の最良の形態に係るバルブ形状をしめす斜視図である。 （ｂ）（ａ）におけるバルブ形状において、その外周部を圧縮した場合の形状をしめす斜視図である。(A) It is a perspective view which shows the valve | bulb shape which concerns on the best form of this invention. (B) It is a perspective view which shows the shape at the time of compressing the outer peripheral part in the valve | bulb shape in (a). （ａ）本発明の他の形態に係るバルブ形状をしめす上面図である。 （ｂ）（ａ）におけるＢ−Ｂ断面図である。(A) It is a top view which shows the valve | bulb shape which concerns on the other form of this invention. (B) It is BB sectional drawing in (a). （ａ）従来のバルブ形状の一例をしめす斜視図である。 （ｂ）（ａ）におけるバルブ形状において、その外周部を圧縮した場合の形状をしめす斜視図である。(A) It is a perspective view which shows an example of the conventional valve | bulb shape. (B) It is a perspective view which shows the shape at the time of compressing the outer peripheral part in the valve | bulb shape in (a).

符号の説明Explanation of symbols

１ 容積変動型ポンプ
２ 駆動源出力軸
３ コネクティングスライダ
４ ダイアフラム
５ ポンプ室
６ バルブヘッド
７ バルブケース
８ ダイアフラムマウント
９ スライダーケース
１０ バルブ
１１ 吸引口
１２ 吐出口
１３ バルブ面
１３“ バルブ面裏側
１４ バルブ外周部（シール部）
１５ アーム
１６ 湾曲部
１７ 開口部
１８ 貫通孔 DESCRIPTION OF SYMBOLS 1 Volume change type pump 2 Drive source output shaft 3 Connecting slider 4 Diaphragm 5 Pump chamber 6 Valve head 7 Valve case 8 Diaphragm mount 9 Slider case 10 Valve 11 Suction port 12 Discharge port 13 Valve surface 13 "Valve surface back side 14 Valve outer periphery (Seal part)
15 Arm 16 Bending portion 17 Opening portion 18 Through hole

Claims (4)

吸引口と吐出口を有し、往復運動によってポンプ室内外に圧力差を発生させる容積変動型ポンプに備えられる、可撓性材料により成形されたバルブ成形体において、
バルブ面とバルブ成形体の外周部をつなぐアームが、バルブ面とバルブ成形体の外周部のどちらか一方で複数に分かれて連結されていることを特徴とするバルブ成形体。 In a valve molded body formed of a flexible material, which is provided in a volume-variable pump having a suction port and a discharge port and generating a pressure difference between the pump chamber and the outside by a reciprocating motion,
An arm for connecting the valve surface and the outer periphery of the valve molded body is divided and connected to one of the valve surface and the outer periphery of the valve molded body. 請求項１に記載のバルブ成形体において、
前記、バルブ面とバルブ外周部をつなぐ複数のアームが、湾曲部を有する形状であることを特徴とするバルブ成形体。 In the valve molded body according to claim 1,
The valve molded body, wherein the plurality of arms connecting the valve surface and the valve outer peripheral portion have a curved portion. 請求項１又は請求項２のいずれかに記載のバルブ成形体において、
少なくとも２個以上のバルブが、前記バルブ面の向きが逆の状態で隣接して一体成形されていることを特徴としたバルブ成形体。 In the valve molded body according to claim 1 or 2,
A valve molded body characterized in that at least two or more valves are integrally formed adjacent to each other with the valve surfaces in opposite directions. 請求項１〜請求項３のいずれかに記載のバルブ成形体を有することを特徴とした容積変動型ポンプ。   A volume-variable pump comprising the valve molded body according to any one of claims 1 to 3.
JP2007215704A 2007-08-22 2007-08-22 Valve and volume-variable pump having the valve Active JP5156899B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007215704A JP5156899B2 (en) 2007-08-22 2007-08-22 Valve and volume-variable pump having the valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007215704A JP5156899B2 (en) 2007-08-22 2007-08-22 Valve and volume-variable pump having the valve

Publications (2)

Publication Number Publication Date
JP2009047121A true JP2009047121A (en) 2009-03-05
JP5156899B2 JP5156899B2 (en) 2013-03-06

Family

ID=40499550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007215704A Active JP5156899B2 (en) 2007-08-22 2007-08-22 Valve and volume-variable pump having the valve

Country Status (1)

Country Link
JP (1) JP5156899B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10464336B2 (en) 2017-07-24 2019-11-05 Roland Dg Corporation Diaphragm pump, ink supply system, and inkjet printer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0599150A (en) * 1991-10-09 1993-04-20 Nippon Tectron Co Ltd Sheet valve for diaphragm pump
JPH09509728A (en) * 1994-12-21 1997-09-30 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Check valve
JP2001304316A (en) * 2000-04-20 2001-10-31 Sanyo Electric Co Ltd Suspension spring

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0599150A (en) * 1991-10-09 1993-04-20 Nippon Tectron Co Ltd Sheet valve for diaphragm pump
JPH09509728A (en) * 1994-12-21 1997-09-30 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Check valve
JP2001304316A (en) * 2000-04-20 2001-10-31 Sanyo Electric Co Ltd Suspension spring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10464336B2 (en) 2017-07-24 2019-11-05 Roland Dg Corporation Diaphragm pump, ink supply system, and inkjet printer

Also Published As

Publication number Publication date
JP5156899B2 (en) 2013-03-06

Similar Documents

Publication Publication Date Title
JP4957480B2 (en) Piezoelectric micro pump
US3887305A (en) Reciprocating pump
US20090148318A1 (en) Piezoelectric Pump
JP5223482B2 (en) Diaphragm pump and blood pressure monitor
JP5429317B2 (en) Piezoelectric micro pump
JP5066724B2 (en) High vacuum valve
JP4544114B2 (en) Diaphragm pump liquid discharge control device
KR20010023788A (en) Small pump device and sphygmomanometer using the pump device
JP5156899B2 (en) Valve and volume-variable pump having the valve
US7762796B2 (en) Pump valve with controlled stroke
JP2006125374A (en) Discharge side construction and check valve using the same, and compressor using them
JP5513066B2 (en) Reciprocating pump and check valve
CN111255664B (en) Diaphragm pump
KR100719626B1 (en) A hinge type check valve
JP6393551B2 (en) Diaphragm pump
WO2006090773A1 (en) Valve and variable volume pump with the valve
US6358023B1 (en) Moment pump
JP5371171B2 (en) Diaphragm pump
JP2005220810A (en) Pump
JP2007064059A (en) Valve and positive displacement reciprocating pump structure using the same
JP2016065553A (en) Check valve mechanism and pump device using the same
JP2020076389A (en) Reciprocation pump
CN215409125U (en) Constant flow micro pump
JP7449100B2 (en) Diaphragm pump
JP4791702B2 (en) pump

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100812

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120222

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120305

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120502

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121022

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121023

R150 Certificate of patent or registration of utility model

Ref document number: 5156899

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151221

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250