JP3984606B2 - Tube pump - Google Patents

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JP3984606B2
JP3984606B2 JP2004228786A JP2004228786A JP3984606B2 JP 3984606 B2 JP3984606 B2 JP 3984606B2 JP 2004228786 A JP2004228786 A JP 2004228786A JP 2004228786 A JP2004228786 A JP 2004228786A JP 3984606 B2 JP3984606 B2 JP 3984606B2
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tube
lubricant
pressure member
cylindrical chamber
inner peripheral
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JP2006046195A (en
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長雄 玉川
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Aquatech Ltd
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Aquatech Ltd
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Description

この発明は、円筒室の内周面に沿わせてリング状に配置したチューブを、その内側に配置されて偏心運動するリング状加圧部材により一方向に押圧してポンプ作用を行うチューブポンプに関する。   The present invention relates to a tube pump that performs a pumping action by pressing a tube arranged in a ring shape along an inner peripheral surface of a cylindrical chamber in one direction by a ring-shaped pressurizing member that is arranged on the inner side and moves eccentrically. .

この種のチューブポンプは、加圧部材の動作に伴ってチューブに引っ張り力が加わるのでこの引っ張り力を軽減し、また円筒室や加圧部材との摩擦などによるチューブの損傷をなくすために、グリースなどの潤滑剤をチューブに塗布することが一般的に行われている。この潤滑剤の効果を長期にわたって保持するために、加圧部材にグリース溜めを設けてこのグリース溜めから加圧部材の外周面に潤滑剤を供給することが提案されている。
特開平１１−１３６４８号公報 In this type of tube pump, a tensile force is applied to the tube as the pressure member moves, so this tensile force is reduced, and in order to eliminate damage to the tube due to friction with the cylindrical chamber and the pressure member, grease is applied. It is common practice to apply a lubricant such as In order to maintain the effect of this lubricant over a long period of time, it has been proposed to provide a grease reservoir in the pressure member and supply the lubricant from the grease reservoir to the outer peripheral surface of the pressure member.
Japanese Patent Laid-Open No. 11-13648

しかしながら、加圧部材の強い押圧力によりグリースがチューブと加圧部材の間から押し出され、すぐにポンプハウジング内の別の場所、例えばポンプハウジングに形成されているチューブの導出部付近に移動してそこに留まったままになってしまう。しかもグリース溜めの容量には限りがあるため、運転を続けるにつれて潤滑を必要とするチューブ表面はほとんど潤滑剤のない状態になってしまい、長期間安定して潤滑作用を発揮させることが困難であった。   However, due to the strong pressing force of the pressurizing member, the grease is pushed out from between the tube and the pressurizing member, and immediately moves to another place in the pump housing, for example, near the outlet portion of the tube formed in the pump housing. It stays there. In addition, since the capacity of the grease reservoir is limited, the tube surface that requires lubrication becomes almost free of lubricant as the operation continues, making it difficult to stably exert a lubricating action for a long period of time. It was.

この発明はこれらの点に着目し、より効果的な構成により潤滑剤の供給が長期間にわたって継続的に安定して行われるようにすることを課題としてなされたものである。   This invention pays attention to these points, and it is an object of the present invention to make it possible to supply the lubricant continuously and stably over a long period of time with a more effective configuration.

上記の課題を達成するために、第１の発明のチューブポンプでは、円筒室の側面に内周面に沿って潤滑剤溜めを形成し、少なくともチューブが圧迫されて偏平になった時には、チューブの端縁が加圧部材の側面からはみ出して潤滑剤溜め内の潤滑剤に触れることにより、チューブに潤滑剤が付着するように構成している。   In order to achieve the above object, in the tube pump of the first invention, a lubricant reservoir is formed on the side surface of the cylindrical chamber along the inner peripheral surface, and at least when the tube is compressed and flattened, The end edge protrudes from the side surface of the pressure member and comes into contact with the lubricant in the lubricant reservoir so that the lubricant adheres to the tube.

また第２の発明では、円筒室の側面に内周面に沿って潤滑剤溜めを形成したものにおいて、更に加圧部材の側面に突起を形成し、潤滑剤溜め内に収容されている含油スポンジを上記突起で押圧することにより、含油スポンジの潤滑剤が押し出されてチューブに付着するように構成している。   According to the second aspect of the present invention, in the case where the lubricant reservoir is formed on the side surface of the cylindrical chamber along the inner peripheral surface, a protrusion is further formed on the side surface of the pressure member, and the oil-containing sponge is accommodated in the lubricant reservoir. Is pressed by the protrusions so that the lubricant of the oil-containing sponge is pushed out and adheres to the tube.

また第３の発明では、円筒室の側面に内周面に沿って潤滑剤溜めを形成したものにおいて、更に加圧部材の側面に加圧部材より大径の円形弾性シートを設け、加圧部材の偏心運動に応じて弾性シートの外周縁が外側に広がって元の形状に戻る動作を繰り返すことにより、潤滑剤溜め内の潤滑剤がチューブ側に掻き出されてチューブに付着するように構成している。   In the third invention, a lubricant reservoir is formed on the side surface of the cylindrical chamber along the inner peripheral surface. A circular elastic sheet having a larger diameter than the pressure member is further provided on the side surface of the pressure member. According to the eccentric movement of the elastic sheet, the outer periphery of the elastic sheet spreads outward and returns to its original shape, so that the lubricant in the lubricant reservoir is scraped to the tube side and adheres to the tube. ing.

上記の弾性シートの外周縁が外側に広がる動作は、例えば圧迫されて加圧部材の側面からはみ出したチューブの端縁に押されることによって行われ、あるいは加圧部材の側面に形成された突起に押されることによって行われる。   The operation of spreading the outer peripheral edge of the elastic sheet to the outside is performed, for example, by being pressed against the edge of the tube protruding from the side surface of the pressure member, or on the protrusion formed on the side surface of the pressure member. This is done by being pressed.

加圧部材の強い押圧力でチューブと加圧部材の間から押し出されてはみ出したグリースはそのまま潤滑剤溜めに残り、ポンプハウジング内の別の場所に移動してしまうことがない。そして第１の発明によれば、チューブの端縁が加圧部材の側面からはみ出し、潤滑剤溜め内の潤滑剤に触れることによってチューブに潤滑剤が付着するので、ポンプが正常に動作している間はチューブ表面には少しずつ潤滑剤が供給される。このため、チューブ表面がほとんど潤滑剤のない状態になることはなく、長期間安定して潤滑作用を発揮させることができる。   The grease that is pushed out between the tube and the pressure member by the strong pressing force of the pressure member remains in the lubricant reservoir and does not move to another location in the pump housing. And according to 1st invention, since the edge of a tube protrudes from the side surface of a pressurizing member, and a lubricant adheres to a tube by touching the lubricant in a lubricant reservoir, a pump is operating normally. In the meantime, lubricant is supplied to the tube surface little by little. For this reason, the tube surface is hardly in a state without a lubricant, and a lubricating action can be exhibited stably for a long period of time.

加圧部材を偏心運動させると、その外径と円筒室の内径の差に応じた回転速度で加圧部材は偏心運動とは逆の方向に回転する。従って、第２の発明では、含油スポンジが加圧部材の突起で押圧されると潤滑剤が押し出されてチューブに付着するが、加圧部材が回転して突起で押されなくなると余分な潤滑剤は再び含油スポンジに吸収され、ポンプハウジング内の別の場所に移動してしまうことがない。そしてチューブに潤滑剤が付着するので、ポンプが正常に動作している間はチューブ表面には少しずつ潤滑剤が供給される。このため、チューブ表面がほとんど潤滑剤のない状態になることはなく、長期間安定して潤滑作用を発揮させることができる。   When the pressing member is moved eccentrically, the pressing member rotates in the direction opposite to the eccentric movement at a rotational speed corresponding to the difference between the outer diameter and the inner diameter of the cylindrical chamber. Therefore, in the second invention, when the oil-containing sponge is pressed by the protrusion of the pressure member, the lubricant is pushed out and adheres to the tube, but when the pressure member rotates and is not pressed by the protrusion, the excess lubricant Is again absorbed by the oil-containing sponge and does not move to another location in the pump housing. Since the lubricant adheres to the tube, the lubricant is gradually supplied to the tube surface while the pump is operating normally. For this reason, the tube surface is hardly in a state without a lubricant, and a lubricating action can be exhibited stably for a long period of time.

また、加圧部材の側面に加圧部材より大径の円形弾性シートを設けた第３の発明では、弾性シートの外周縁が外側に広がって元の形状に戻るという動作を繰り返すことにより、潤滑剤溜め内の潤滑剤がチューブ側に掻き出されてチューブに付着する。従って、ポンプが正常に動作している間はチューブ表面には少しずつ潤滑剤が供給され、チューブ表面がほとんど潤滑剤のない状態になることはなく、長期間安定して潤滑作用を発揮させることができる。   Further, in the third invention in which a circular elastic sheet having a diameter larger than that of the pressure member is provided on the side surface of the pressure member, lubrication is performed by repeating an operation in which the outer peripheral edge of the elastic sheet spreads outward and returns to the original shape. The lubricant in the agent reservoir is scraped to the tube side and adheres to the tube. Therefore, during the normal operation of the pump, the lubricant is gradually supplied to the tube surface, and the tube surface is almost free of lubricant, so that the lubrication action can be exerted stably for a long time. Can do.

以下、各発明の実施例について説明する。図はいずれもチューブの左側が圧迫されており、右側が圧迫されていない状態の断面図である。なお、チューブポンプの全体は例えば前記の特許文献に開示されているような構成となっているが、その正面図はこの出願の発明に直接関係がないので省略する。   Examples of each invention will be described below. In each of the figures, the left side of the tube is compressed and the right side is not compressed. The entire tube pump has a configuration as disclosed in, for example, the above-mentioned patent document, but a front view thereof is omitted because it is not directly related to the invention of this application.

図１は第１の発明の一実施例であり、１は円筒室２を形成した本体ケース１ａと蓋１ｂとで構成されるポンプハウジング、３は円筒室２の内周面２ａに沿わせてリング状に配置されたチューブであり、その両端はポンプハウジング１に形成されている導出部（図示せず）から外部に引き出されている。なお、チューブ３はゴムや合成樹脂等で構成されているが、図では斜線等による断面表示は省略してある。４はチューブ３の内側に配置されたリング状の加圧部材、５は加圧部材４の内側に回転自在に配置された偏心ローター、６は回転軸である。偏心ローター５は回転軸６に固定されており、その外周部５ａが加圧部材４の内周面４ａに摺接しながら回転し、加圧部材４を内周面２ａに沿って偏心運動させるように構成されている。７は回転軸６を駆動するための減速機付きモータであり、本体ケース１ａの外面に設けられている。   FIG. 1 shows an embodiment of the first invention. Reference numeral 1 denotes a pump housing composed of a main body case 1a having a cylindrical chamber 2 and a lid 1b. Reference numeral 3 denotes an inner peripheral surface 2a of the cylindrical chamber 2. The tubes are arranged in a ring shape, and both ends thereof are drawn out from a lead-out portion (not shown) formed in the pump housing 1. In addition, although the tube 3 is comprised with rubber | gum, synthetic resin, etc., the cross-sectional display by a diagonal line etc. is abbreviate | omitted in the figure. 4 is a ring-shaped pressurizing member arranged inside the tube 3, 5 is an eccentric rotor arranged rotatably inside the pressurizing member 4, and 6 is a rotating shaft. The eccentric rotor 5 is fixed to the rotating shaft 6, and the outer peripheral portion 5 a rotates while being in sliding contact with the inner peripheral surface 4 a of the pressurizing member 4, so that the pressurizing member 4 is eccentrically moved along the inner peripheral surface 2 a. It is configured. Reference numeral 7 denotes a motor with a speed reducer for driving the rotary shaft 6 and is provided on the outer surface of the main body case 1a.

１１はこの発明により設けられた潤滑剤溜めであり、円筒室２の側面、すなわち本体ケース１ａと蓋１ｂの内面に内周面２ａに沿って凹溝状に形成されている。１２は潤滑剤溜め１１に収容されている含油スポンジである。この実施例では、図示のように圧迫されて偏平になった時のチューブ３の幅が加圧部材４の幅よりも若干大きく、チューブ３の両端縁３ａが加圧部材４の側面からはみ出すような寸法に選定されている。   Reference numeral 11 denotes a lubricant reservoir provided according to the present invention, which is formed in a concave groove shape along the inner peripheral surface 2a on the side surface of the cylindrical chamber 2, that is, on the inner surfaces of the main body case 1a and the lid 1b. Reference numeral 12 denotes an oil-containing sponge accommodated in the lubricant reservoir 11. In this embodiment, the width of the tube 3 when pressed and flattened as shown in the drawing is slightly larger than the width of the pressure member 4 so that both end edges 3a of the tube 3 protrude from the side surface of the pressure member 4. The dimensions are selected.

このように構成されているので、チューブ３が加圧部材４で圧迫されて偏平になると両端縁３ａが加圧部材４の側面からはみ出し、潤滑剤溜め１１内の含油スポンジ１２が押される。このため含油スポンジ１２に含浸されている潤滑剤が少量押し出されてチューブ３に付着し、余分な潤滑剤は圧迫箇所が移動してチューブ３の端縁３ａが引っ込むと再び含油スポンジ１２に吸収される。チューブ３に付着した潤滑剤はポンプの運転に伴って周辺に広がり、この動作が繰り返されることによって十分な潤滑作用が行われることになるのである。   With this configuration, when the tube 3 is compressed by the pressure member 4 and becomes flat, both end edges 3a protrude from the side surface of the pressure member 4, and the oil-impregnated sponge 12 in the lubricant reservoir 11 is pushed. For this reason, a small amount of the lubricant impregnated in the oil-impregnated sponge 12 is pushed out and adheres to the tube 3, and the excess lubricant is absorbed by the oil-impregnated sponge 12 again when the compressed portion moves and the edge 3a of the tube 3 is retracted. The The lubricant adhering to the tube 3 spreads to the periphery with the operation of the pump, and a sufficient lubricating action is performed by repeating this operation.

なお、円筒室２の内面やチューブ３、加圧部材４等にあらかじめ十分な潤滑剤を塗布しておけば、余分な潤滑剤は次第に潤滑剤溜め１１内に入ってここに溜まるので、最初から潤滑剤溜め１１に潤滑剤を入れておかなくても、上記と同様な動作によって潤滑作用を継続させることができる。この時の潤滑剤としては、グリースや液状潤滑油あるいはこれらの混合物からなる潤滑剤が使用される。また、潤滑剤が流動性のよい液状潤滑油の場合には上記の例のようにスポンジを利用して潤滑剤溜め１１内に潤滑剤を保持する必要があるが、グリースのように粘度の高い潤滑剤の場合には、スポンジを使用しないで潤滑剤を直接潤滑剤溜め１１内に入れておいてもよい。   If a sufficient amount of lubricant is applied to the inner surface of the cylindrical chamber 2, the tube 3, the pressure member 4 and the like in advance, excess lubricant gradually enters the lubricant reservoir 11 and accumulates there from the beginning. Even if no lubricant is put in the lubricant reservoir 11, the lubricating action can be continued by the same operation as described above. As the lubricant at this time, a lubricant made of grease, liquid lubricant, or a mixture thereof is used. Further, when the lubricant is a liquid lubricant having good fluidity, it is necessary to hold the lubricant in the lubricant reservoir 11 using a sponge as in the above example, but the viscosity is as high as grease. In the case of a lubricant, the lubricant may be placed directly in the lubricant reservoir 11 without using a sponge.

図２は第１の発明の別の実施例である。以下の図も同様であるが、図１と同一の部材は同一の符号で示してある。ここでは、チューブ３として一般的な断面円形のものを使用せず、断面形状を円筒室２の内周面２ａに接する側の円弧状の外辺３１と、加圧部材４に接する側の円弧状の内辺３２とが連結部３３で連なる偏平な形状とし、且つ外辺３１と内辺３２とは鋭角で交わった唇状のものとしてある。そして、連結部３３からは外側に向けてフィン状の突出片３４を設け、この突出片３４が加圧部材４の側面から突出して潤滑剤溜め１１に挿入されるような寸法となっている。また潤滑剤溜め１１内には、図１の含油スポンジ１２に代えてグリースや液状潤滑油あるいはこれらの混合物からなる潤滑剤１２ａを直接入れてある。   FIG. 2 shows another embodiment of the first invention. In the following drawings, the same members as those in FIG. 1 are denoted by the same reference numerals. Here, a tube 3 having a general cross-section is not used, and the cross-sectional shape is an arc-shaped outer side 31 on the side in contact with the inner peripheral surface 2a of the cylindrical chamber 2 and a circle on the side in contact with the pressure member 4. The arcuate inner side 32 has a flat shape that is continuous at the connecting portion 33, and the outer side 31 and the inner side 32 have a lip shape that intersects at an acute angle. A fin-like projecting piece 34 is provided outward from the connecting portion 33, and the projecting piece 34 projects from the side surface of the pressure member 4 and is inserted into the lubricant reservoir 11. In addition, a lubricant 12a made of grease, liquid lubricant, or a mixture thereof is directly placed in the lubricant reservoir 11 instead of the oil-containing sponge 12 shown in FIG.

このように構成されているので、ポンプが運転されて加圧部材４によるチューブ３の圧迫が繰り返されると、それに伴って、突出片３４が潤滑剤溜め１１内を図の左右方向に移動しながらチューブ３の外辺３１と内辺３２がそれぞれ内周面２ａと加圧部材４に当接したり離れたりする。このため、潤滑剤１２ａが当接部分から押し出されたり吸い込まれたりしてチューブ３の表面に付着し、この動作が繰り返されて十分な潤滑作用が行われるのである。   With this configuration, when the pump is operated and the compression of the tube 3 by the pressurizing member 4 is repeated, the protruding piece 34 moves in the lubricant reservoir 11 in the horizontal direction in the drawing accordingly. The outer side 31 and the inner side 32 of the tube 3 are brought into contact with or separated from the inner peripheral surface 2a and the pressure member 4, respectively. For this reason, the lubricant 12a is pushed out or sucked in from the contact portion and adheres to the surface of the tube 3, and this operation is repeated so that a sufficient lubricating action is performed.

図３の（ａ）及び（ｂ）に示す第２の発明は、偏平になった時にチューブ３の端縁が加圧部材４の側面からはみ出さない場合に適した発明である。すなわち、第１の発明は圧迫されてチューブ３が偏平になった時にその端縁３ａが加圧部材４の側面からはみ出す必要があるが、第２の発明では加圧部材４の側面に突起４ｂを形成してあり、この突起４ｂが潤滑剤溜め１１内に収容されている含油スポンジ１２を押し、含油スポンジ１２から押し出された潤滑剤がチューブ３に付着するように構成されている。   The second invention shown in FIGS. 3A and 3B is an invention suitable for a case where the edge of the tube 3 does not protrude from the side surface of the pressurizing member 4 when flattened. That is, in the first invention, when the tube 3 is flattened by being compressed, the end edge 3 a needs to protrude from the side surface of the pressure member 4. In the second invention, the protrusion 4 b is formed on the side surface of the pressure member 4. The protrusion 4b pushes the oil-containing sponge 12 accommodated in the lubricant reservoir 11, and the lubricant pushed out from the oil-containing sponge 12 is attached to the tube 3.

加圧部材４は偏心運動とは逆の方向に回転するので突起４ｂで押圧される箇所は少しずつ移動し、余分な潤滑剤は含油スポンジ１２の押圧されていない部分に再び吸収される。このように、チューブ３の端縁が加圧部材４の側面からはみ出さない場合でもチューブ３には潤滑剤が供給され、十分な潤滑作用が行われるのである。なお、この発明はグリースのように粘度の高い潤滑剤を直接潤滑剤溜め１１内に入れておく構成には適していないので、液状潤滑油を含浸させた含油スポンジ１２を使用することが望ましい。   Since the pressing member 4 rotates in the direction opposite to the eccentric motion, the portion pressed by the protrusion 4b moves little by little, and the excess lubricant is absorbed again by the portion of the oil-impregnated sponge 12 that is not pressed. Thus, even when the end edge of the tube 3 does not protrude from the side surface of the pressure member 4, the lubricant is supplied to the tube 3 and a sufficient lubricating action is performed. Since the present invention is not suitable for a configuration in which a lubricant having a high viscosity such as grease is directly placed in the lubricant reservoir 11, it is desirable to use an oil-containing sponge 12 impregnated with a liquid lubricant.

次に、図４に示す第３の発明について述べる。図において、１３は弾性シートであり、加圧部材４より大径の円形のものを加圧部材４の側面に重ねて設けてあり、潤滑剤溜め１１内には、図２の場合と同様にグリースや液状潤滑油あるいはその混合物からなる潤滑剤１２ａを入れてある。   Next, the third invention shown in FIG. 4 will be described. In the figure, reference numeral 13 denotes an elastic sheet, and a circular sheet having a diameter larger than that of the pressure member 4 is provided on the side surface of the pressure member 4, and the lubricant reservoir 11 has the same structure as in FIG. A lubricant 12a made of grease, liquid lubricating oil, or a mixture thereof is contained.

弾性シート１３は例えばポリカーボネート、ポリエチレンテレフタレート、塩化ビニール、ポリプロピレンのような弾性を有する樹脂製の薄板からなるもので、チューブ３として内径１０ｍｍ、厚み２ｍｍのゴム系チューブが使用されている場合には、上記の材料からなる例えば厚さ０．５ｍｍの弾性シートが用いられる。また弾性シート１３の外径は、内周面２ａとの間に０．２乃至０．３ｍｍの隙間が保たれる寸法に選定されており、図のように圧迫されて加圧部材４の側面からはみ出したチューブ３の端縁３ａに押されて外周縁１３ａが外側に広がり、圧迫箇所が移動してチューブ３が元の形状に戻ると外周縁１３ａも元の形状に戻るように構成されている。   The elastic sheet 13 is made of a thin resin plate having elasticity such as polycarbonate, polyethylene terephthalate, vinyl chloride, and polypropylene. For example, when a rubber tube having an inner diameter of 10 mm and a thickness of 2 mm is used as the tube 3, For example, an elastic sheet having a thickness of 0.5 mm made of the above material is used. The outer diameter of the elastic sheet 13 is selected so that a clearance of 0.2 to 0.3 mm is maintained between the inner peripheral surface 2a and the side surface of the pressure member 4 is pressed as shown in the figure. The outer peripheral edge 13a is pushed outward by the protruding edge 3a of the tube 3 so that the outer peripheral edge 13a spreads outward, and the outer peripheral edge 13a also returns to the original shape when the compressed portion moves and the tube 3 returns to its original shape. Yes.

このように構成されているので、ポンプが運転されて加圧部材４によるチューブ３の圧迫が繰り返されると、それに伴って、弾性シート１３の外周縁１３ａが外側に広がり、また元の形状に戻るという動作が繰り返される。この外側に広がった外周縁１３ａが元の形状に戻る時に、潤滑剤溜め１１内の潤滑剤１２ａがチューブ３側に掻き出されてチューブ３に付着する。従って、チューブ６が圧迫された時に潤滑剤溜め１１に押し出されていた潤滑剤１２ａが再びチューブ３側に戻る状態となり、ポンプが正常に動作している間はチューブ３の表面には常に潤滑剤が供給され、チューブ３の表面がほとんど潤滑剤のない状態になることはなく、長期間安定した潤滑作用が発揮されるのである。   Since it is configured in this way, when the pump is operated and the compression of the tube 3 by the pressurizing member 4 is repeated, the outer peripheral edge 13a of the elastic sheet 13 spreads outward and returns to its original shape. The operation is repeated. When the outer peripheral edge 13a that spreads outside returns to its original shape, the lubricant 12a in the lubricant reservoir 11 is scraped to the tube 3 side and adheres to the tube 3. Accordingly, when the tube 6 is compressed, the lubricant 12a pushed out to the lubricant reservoir 11 returns to the tube 3 side again, and the surface of the tube 3 is always lubricated while the pump is operating normally. Thus, the surface of the tube 3 is hardly in a state free of lubricant, and a stable lubricating action is exhibited for a long time.

図５は第３の発明の別の実施例であり、偏平になった時にチューブ３の端縁が加圧部材４の側面からはみ出さない場合に適した発明である。すなわち、第２の発明と同様に加圧部材４の側面に突起４ｂを形成し、潤滑剤溜め１１内には含油スポンジ１２を収容してある。ポンプが動作すると突起４ｂで弾性シート１３の外周縁１３ａが押されて外側に広がるが、加圧部材４が偏心運動とは逆の方向に回転するにつれて突起４ｂで押される部分は少しずつ移動し、突起４ｂで押されなくなった外周縁１３ａはまた元の形状に戻るという動作が繰り返される。   FIG. 5 shows another embodiment of the third invention, which is suitable for the case where the end edge of the tube 3 does not protrude from the side surface of the pressure member 4 when flattened. That is, similar to the second invention, the protrusion 4 b is formed on the side surface of the pressure member 4, and the oil-containing sponge 12 is accommodated in the lubricant reservoir 11. When the pump is operated, the outer peripheral edge 13a of the elastic sheet 13 is pushed by the protrusion 4b and spreads outward. However, as the pressure member 4 rotates in the direction opposite to the eccentric motion, the portion pushed by the protrusion 4b moves little by little. The outer peripheral edge 13a that is no longer pressed by the protrusion 4b is again returned to its original shape.

この動作に応じて、潤滑剤溜め１１内の含油スポンジ１２が弾性シート１３の外周縁１３ａで押圧され、含油スポンジ１２から潤滑剤が押し出される。そしてこの押し出された潤滑剤が元の形状に戻る外周縁１３ａによってチューブ３側に掻き出され、チューブ３に付着するのである。なお、余分な潤滑剤は含油スポンジ１２の押圧されていない部分に再び吸収される。従って、チューブ３の端縁が加圧部材４の側面からはみ出さないでもチューブ３には潤滑剤が供給され、十分な潤滑作用が行われることになる。なお、含油スポンジ１２を使用しないで、グリースのように粘度の高い潤滑剤を直接潤滑剤溜め１１内に入れておくこともできる。また、円筒室２の内面やチューブ３、加圧部材４等に潤滑剤を塗布しておけば、余分な潤滑剤は次第に潤滑剤溜め１１内に入ってここに溜まるので、潤滑剤溜め１１にあらかじめ潤滑剤を入れておかなくても、十分な潤滑作用を継続させることができる。   In accordance with this operation, the oil-containing sponge 12 in the lubricant reservoir 11 is pressed by the outer peripheral edge 13a of the elastic sheet 13, and the lubricant is pushed out from the oil-containing sponge 12. Then, the extruded lubricant is scraped to the tube 3 side by the outer peripheral edge 13 a that returns to its original shape, and adheres to the tube 3. The excess lubricant is absorbed again by the non-pressed portion of the oil-containing sponge 12. Therefore, even if the end edge of the tube 3 does not protrude from the side surface of the pressure member 4, the lubricant is supplied to the tube 3 and a sufficient lubricating action is performed. It should be noted that a lubricant having a high viscosity such as grease can be directly placed in the lubricant reservoir 11 without using the oil-containing sponge 12. Further, if a lubricant is applied to the inner surface of the cylindrical chamber 2, the tube 3, the pressure member 4, etc., the excess lubricant gradually enters the lubricant reservoir 11 and accumulates there. Even if a lubricant is not added in advance, a sufficient lubricating action can be continued.

なお、各実施例は潤滑剤溜め１１を加圧部材４の両側に設けているが、場合によっては潤滑剤溜め１１や関連する突起４ｂ、弾性シート１３等は片側だけに設けたものとしてもよい。   In each embodiment, the lubricant reservoir 11 is provided on both sides of the pressure member 4, but the lubricant reservoir 11, the associated protrusion 4b, the elastic sheet 13 and the like may be provided only on one side in some cases. .

この発明は各種のチューブポンプに適用することができる。   The present invention can be applied to various tube pumps.

第１の発明の一実施例の概略断面図である。It is a schematic sectional drawing of one Example of 1st invention. 同発明の別の実施例の概略断面図である。It is a schematic sectional drawing of another Example of the same invention. 第２の発明の一実施例の概略断面図及び加圧部材の斜視図である。It is the schematic sectional drawing of one Example of 2nd invention, and the perspective view of a pressurization member. 第３の発明の一実施例の概略断面図である。It is a schematic sectional drawing of one Example of 3rd invention. 同発明の別の実施例の概略断面図である。It is a schematic sectional drawing of another Example of the same invention.

符号の説明Explanation of symbols

１ ポンプハウジング
２ 円筒室
２ａ 内周面
３ チューブ
３ａ 端縁
４ 加圧部材
４ｂ 突起
１１ 潤滑剤溜め
１２ 含油スポンジ
１２ａ 潤滑剤
１３ 弾性シート
１３ａ 外周縁
DESCRIPTION OF SYMBOLS 1 Pump housing 2 Cylindrical chamber 2a Inner peripheral surface 3 Tube 3a Edge 4 Pressure member 4b Protrusion 11 Lubricant reservoir 12 Oil-impregnated sponge 12a Lubricant 13 Elastic sheet 13a Outer periphery

Claims (5)

チューブを円筒室の内周面に沿わせてリング状に配置し、チューブの内側に設けたリング状の加圧部材の偏心運動によりチューブを一方向に順次圧迫してチューブ内の流体を送出するチューブポンプにおいて、
円筒室の側面に内周面に沿って潤滑剤溜めを形成し、少なくともチューブが圧迫されて偏平になった時には、チューブの端縁が加圧部材の側面からはみ出して潤滑剤溜め内の潤滑剤に触れることにより、チューブに潤滑剤が付着するように構成したことを特徴とするチューブポンプ。 The tube is arranged in a ring shape along the inner peripheral surface of the cylindrical chamber, and the tube is sequentially pressed in one direction by the eccentric movement of the ring-shaped pressurizing member provided inside the tube, and the fluid in the tube is sent out. In tube pump,
A lubricant reservoir is formed on the side surface of the cylindrical chamber along the inner peripheral surface. When at least the tube is compressed and flattened, the edge of the tube protrudes from the side surface of the pressure member, and the lubricant in the lubricant reservoir A tube pump configured to attach a lubricant to a tube by touching the tube. チューブを円筒室の内周面に沿わせてリング状に配置し、チューブの内側に設けたリング状の加圧部材の偏心運動によりチューブを一方向に順次圧迫してチューブ内の流体を送出するチューブポンプにおいて、
円筒室の側面に内周面に沿って潤滑剤溜めを形成すると共に、加圧部材の側面に突起を形成し、潤滑剤溜め内に収容されている含油スポンジを上記突起が押圧することにより、含油スポンジの潤滑剤が押し出されてチューブに付着するように構成したことを特徴とするチューブポンプ。 The tube is arranged in a ring shape along the inner peripheral surface of the cylindrical chamber, and the tube is sequentially pressed in one direction by the eccentric movement of the ring-shaped pressurizing member provided inside the tube, and the fluid in the tube is sent out. In tube pump,
A lubricant reservoir is formed on the side surface of the cylindrical chamber along the inner peripheral surface, a protrusion is formed on the side surface of the pressure member, and the protrusion presses the oil-containing sponge accommodated in the lubricant reservoir. A tube pump characterized in that an oil-containing sponge lubricant is pushed out and adheres to the tube. チューブを円筒室の内周面に沿わせてリング状に配置し、チューブの内側に設けたリング状の加圧部材の偏心運動によりチューブを一方向に順次圧迫してチューブ内の流体を送出するチューブポンプにおいて、
円筒室の側面に内周面に沿って潤滑剤溜めを形成すると共に、加圧部材の側面に加圧部材より大径の円形弾性シートを設け、加圧部材の偏心運動に応じて弾性シートの外周縁が外側に広がって元の形状に戻る動作を繰り返すことにより、潤滑剤溜め内の潤滑剤がチューブ側に掻き出されてチューブに付着するように構成したことを特徴とするチューブポンプ。 The tube is arranged in a ring shape along the inner peripheral surface of the cylindrical chamber, and the tube is sequentially pressed in one direction by the eccentric movement of the ring-shaped pressurizing member provided inside the tube, and the fluid in the tube is sent out. In tube pump,
A lubricant reservoir is formed on the side surface of the cylindrical chamber along the inner peripheral surface, and a circular elastic sheet having a diameter larger than that of the pressure member is provided on the side surface of the pressure member. A tube pump characterized in that the lubricant in the lubricant reservoir is scraped to the tube side and adheres to the tube by repeating the operation of the outer peripheral edge spreading outward and returning to its original shape. 弾性シートの外周縁が外側に広がる動作が、圧迫されて加圧部材の側面からはみ出したチューブの端縁に押されることによって生ずる請求項３記載のチューブポンプ。 The tube pump according to claim 3, wherein the operation of expanding the outer peripheral edge of the elastic sheet to the outside is caused by being pressed against the end edge of the tube that is pressed and protrudes from the side surface of the pressure member. 弾性シートの外周縁が外側に広がる動作が、加圧部材の側面に形成された突起に押されることによって生ずる請求項３記載のチューブポンプ。
The tube pump according to claim 3, wherein the operation of spreading the outer peripheral edge of the elastic sheet outward is caused by being pushed by a protrusion formed on a side surface of the pressure member.
JP2004228786A 2004-08-05 2004-08-05 Tube pump Expired - Fee Related JP3984606B2 (en)

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