JP2008238100A - Vessel mounting structure of centrifugal separator - Google Patents

Vessel mounting structure of centrifugal separator Download PDF

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JP2008238100A
JP2008238100A JP2007084826A JP2007084826A JP2008238100A JP 2008238100 A JP2008238100 A JP 2008238100A JP 2007084826 A JP2007084826 A JP 2007084826A JP 2007084826 A JP2007084826 A JP 2007084826A JP 2008238100 A JP2008238100 A JP 2008238100A
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container
surface plate
centrifuge
housing
rotor
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JP4819730B2 (en
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Shoji Kurosawa
昭次 黒沢
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Kubota Seisakusho KK
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Kubota Seisakusho KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vessel mounting structure of a centrifugal separator, which even if a rotor of the centrifugal separator is broken in operation, prevents the scattering of broken pieces of the rotor to the outside of the centrifugal separator therefore improving safety much more and facilitates the removal of the vessel to the upper part of a casing. <P>SOLUTION: A hole diameter D2 of an opening of an upper surface plate 26 is made larger than the outside diameter D3 of a brim part 23B of the vessel 23. A vessel supporting elastic member 50 is fit to the back surface of the upper surface plate 26 while interposing a clamp 51 between them. The rigidity of the clamp 51 is made lower than that of the upper surface plate 26. The vessel 23 is housed in the casing 21 in the position lower than that of the upper surface plate 26 and the brim part 23B is put on the vessel supporting elastic member 50. Edge rubber 27 is fixed to the upper surface of the upper surface plate 26 and a press part 27C is pressed against the brim part 23B to hold the brim part 23B between the press part 27C and the vessel supporting elastic member 50. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、遠心力を利用して血液等の検体を分離する遠心分離機に関し、さらに詳述すれば特にロータを収納するチャンバーを形成する容器の取付構造に関するものである。   The present invention relates to a centrifuge that separates a specimen such as blood using centrifugal force, and more particularly to a mounting structure for a container that forms a chamber for housing a rotor.

遠心分離機は、ロータを高速回転（通常数千〜数万ｒｐｍ）させて血液、尿、生化学的サンプル等の検体（液体試料）を遠心分離する機器であるため、運転中にロータが破壊したりバケットがロータから外れると、大きな破壊エネルギとなってロータを収納する容器を破壊し、その破片や周辺部材の破片が機外に飛散することが想定される。このため、ロータ破壊時の安全性を確保するようにした従来技術として、例えば、特許文献１〜３等に開示されている遠心分離機が知られている。   A centrifuge is a device that centrifuges specimens (liquid samples) such as blood, urine, and biochemical samples by rotating the rotor at high speed (usually thousands to tens of thousands of rpm), so the rotor breaks down during operation. When the bucket is detached from the rotor, it is assumed that the container for storing the rotor is destroyed with great destruction energy, and the fragments and peripheral members are scattered outside the machine. For this reason, the centrifuge disclosed by patent documents 1-3 etc. is known as a prior art which ensured the safety at the time of rotor destruction, for example.

また、遠心分離機のロータ破壊に対する安全性を確保するための国際安全規格「ＩＥＣ６１０１０−２−０２０」では、ロータ破壊による破片の許容される飛散距離を遠心分離機から四方に３００ｍｍ以内の範囲とし、かつ破片の大きさが２ｍｍ以下になるように義務付けている。   In addition, according to the international safety standard “IEC61010-2-020” for ensuring safety against centrifuge rotor breakage, the allowable scattering distance of debris due to rotor breakage is set within a range of 300 mm in all directions from the centrifuge. And the size of the fragments is obliged to be 2 mm or less.

前記特許文献１に記載されている遠心分離機は、閉蓋時に筐体上面とドアとの隙間をシールするドアパッキンの中空部内に筐体の上面開口部の周縁部に沿ってドアパッキンの弾性変形を抑制するばね鋼等からなる弾性体部材を挿入したものである。このような構成によれば、ロータの破壊時に生じる風圧などによる大きな破壊エネルギがドアおよびドアパッキンを変形させようとしたとき、ドアパッキンの変形（押し潰し変形）が内部に組み込まれている弾性体部材によって抑えられるため、ドアとドアパッキンとの間に隙間が生じず、破片が機外に飛散するのを防止することができるとしている。   The centrifuge described in Patent Document 1 is such that the elasticity of the door packing extends along the peripheral edge of the upper surface opening of the housing in the hollow portion of the door packing that seals the gap between the upper surface of the housing and the door when the lid is closed. An elastic member made of spring steel or the like that suppresses deformation is inserted. According to such a configuration, when a large destruction energy due to wind pressure or the like generated at the time of destruction of the rotor tries to deform the door and the door packing, an elastic body in which the deformation (crushing deformation) of the door packing is incorporated inside Since it is suppressed by the member, there is no gap between the door and the door packing, and it is possible to prevent fragments from being scattered outside the machine.

前記特許文献２に記載されている遠心分離機は、ロータ等の破片が機外に飛散しないようにロータ室（容器）を囲繞する円筒状の防護壁を回転可能に設けている。このような構成によれば、ロータ破壊時の破片の衝突で生じた偶力（回転力）によってロータ室および保護壁を回転させ、遠心分離機本体に偶力を伝達させないようにすることができるとしている。   The centrifuge described in Patent Document 2 is rotatably provided with a cylindrical protective wall that surrounds the rotor chamber (container) so that fragments such as a rotor do not scatter outside the machine. According to such a configuration, the rotor chamber and the protective wall can be rotated by the couple (rotation force) generated by the collision of the fragments when the rotor is broken, and the couple can be prevented from being transmitted to the centrifuge body. It is said.

前記特許文献３に記載されている遠心分離機は、ドアの内面に突起部を設けている。このような構成によれば、ロータの破壊時に突起部が破片の衝突によってドアから外れてロータ室内に落下することにより、内部の破片の動きを抑制するため、破片が機外に飛散するのを防止することができるとしている。   The centrifuge described in Patent Document 3 has a protrusion on the inner surface of the door. According to such a configuration, when the rotor breaks down, the protrusions are separated from the door by the collision of the fragments and fall into the rotor chamber, thereby suppressing the movement of the internal fragments. It can be prevented.

図４は従来の遠心分離機における容器の取付構造の要部を示す断面図である。同図において、１は上方が開放している有底箱型の筐体、２は筐体１内に配設されチャンバーを構成する容器、３は筐体１の上面開口部を覆う開閉自在なドア、４は環状のエッジゴムである。筐体２の上端開口部にはテーブルを構成する上面板５が一体に設けられており、この上面板５の下面に前記容器２の鍔部２Ａをスタッドボルト６とナット７とによって固定している。また、上面板５の内周縁部には前記エッジゴム４が取付けられており、このエッジゴム４によりドア３の閉蓋時にドア３の下面側に設けた裏板８を受け止め支持することにより、ドア３と上面板５との間の隙間をシールしている。   FIG. 4 is a cross-sectional view showing a main part of a container mounting structure in a conventional centrifuge. In the figure, reference numeral 1 denotes a bottomed box-shaped casing that is open at the top, 2 a container that is disposed in the casing 1 and forms a chamber, and 3 is an openable / closable cover that covers the top opening of the casing 1. The door 4 is an annular edge rubber. An upper surface plate 5 constituting a table is integrally provided at the upper end opening of the housing 2, and the flange portion 2 </ b> A of the container 2 is fixed to the lower surface of the upper surface plate 5 by a stud bolt 6 and a nut 7. Yes. Further, the edge rubber 4 is attached to the inner peripheral edge of the upper surface plate 5, and the door 3 receives and supports the back plate 8 provided on the lower surface side of the door 3 when the door 3 is closed by the edge rubber 4. And the upper surface plate 5 are sealed.

図５は従来の遠心分離機における他の容器の取付構造の要部の断面図である。ここに示す容器の取付構造は、容器２の外径Ｄを上面板５の穴径Ｄ1 より小さくして鍔部２Ａをエッジゴム４とともに上面板５の上面に止めねじ１０によって固定することにより、筐体１からの容器２の取外しを容易にしたものである。 FIG. 5 is a cross-sectional view of the main part of another container mounting structure in a conventional centrifuge. The container mounting structure shown here is such that the outer diameter D of the container 2 is smaller than the hole diameter D 1 of the upper surface plate 5 and the flange portion 2A is fixed to the upper surface of the upper surface plate 5 together with the edge rubber 4 by the set screw 10. The container 2 is easily removed from the housing 1.

特開２００７−１４８３４号公報JP 2007-14834 A 特開２００１−１０４８２７号公報JP 2001-104827 A 特開平８−２６６９３４号公報JP-A-8-266934

しかしながら、上記した従来の遠心分離機は、いずれも一長一短あり、改良の余地があった。
すなわち、特許文献１に記載されている遠心分離は、ボウル（容器）の鍔部を上面板の下面側にドアパッキンを介して固定しているため、筐体からボウルを上方に引き出すことができず、このため筐体を上部筐体と下部筐体の２分割構造とし、上部筐体側にボウルを取付ける必要があるという問題があった。 However, each of the conventional centrifuges described above has advantages and disadvantages, and there is room for improvement.
That is, in the centrifugal separation described in Patent Document 1, the bowl portion of the bowl (container) is fixed to the lower surface side of the upper surface plate via the door packing, so that the bowl can be drawn upward from the housing. Therefore, there is a problem in that the housing has a two-part structure of an upper housing and a lower housing, and a bowl needs to be attached to the upper housing side.

特に、遠心分離作業は、清潔な環境で検体の分離作業を行うため、容器内の埃等を取り除いておく必要がある。また、感染の恐れのある血液や体液などが飛散して付着した場合は容器を取り外し、洗浄を行うことが必要となり、容器を簡単に取り外しできることが必要である。   In particular, since the centrifugal separation work separates the specimen in a clean environment, it is necessary to remove dust and the like in the container. In addition, when blood or body fluid that may cause infection is scattered and attached, it is necessary to remove the container and perform cleaning, and it is necessary that the container can be easily removed.

特許文献２に記載されている遠心分離機は、上記した引用文献１に記載の遠心分離機と同様な問題に加えて、ロータ室の外側に防護壁を設けているので、部品点数が増加するうえ、装置自体が大型、重量化するという問題があった。   In addition to the same problems as the centrifuge described in the above cited reference 1, the centrifuge described in Patent Document 2 is provided with a protective wall outside the rotor chamber, so that the number of parts increases. In addition, there is a problem that the apparatus itself becomes large and heavy.

特許文献３に記載されている遠心分離機は、突起部のためにドアの重量が増大するという問題があった。   The centrifuge described in Patent Document 3 has a problem that the weight of the door increases due to the protrusion.

図４に示した従来の遠心分離機は、容器２の鍔部２Ａを上面板５の下面に固定しているので、上記した引用文献１、２に記載されている遠心分離機と同様に容器２を筐体の上方に取り出すことができないという問題があった。また、ロータ１１（図５参照）の破壊によりバケット１２がロータ１１から外れると、遠心力で水平方向に飛び出して容器２に衝突し、その衝撃で容器２を二点鎖線で示すように突き破って破壊する。このため、容器２やバケット１２の破片が容器２内に飛び散り、その一部がエッジゴム４と裏板８との間の隙間に入り込んでエッジゴム４を突き破ると、機外へ飛散するおそれがあった。また、上面板５の開口径を容器２の外径より小さくすると、ロータ破壊時の破片を容器２内に閉じ込め、機外への飛散を防止する上で有効ではあるが、遠心分離後にバケット１２から検体の入ったチューブ１３を取り出すとき、エッジゴム４にチューブ１３が当たると、その衝撃でせっかく分離した検体の分離面が混濁することがあるため、その場合は再度遠心分離する必要が生じるという問題もあった。   Since the conventional centrifuge shown in FIG. 4 has the flange 2A of the container 2 fixed to the lower surface of the top plate 5, the container is similar to the centrifuge described in the above cited references 1 and 2. There was a problem that 2 could not be taken out above the housing. Further, when the bucket 12 is detached from the rotor 11 due to the destruction of the rotor 11 (see FIG. 5), the bucket 12 pops out horizontally by the centrifugal force and collides with the container 2, and the impact breaks through the container 2 as shown by a two-dot chain line. Destroy. For this reason, if the fragments of the container 2 or the bucket 12 scatter in the container 2 and a part thereof enters the gap between the edge rubber 4 and the back plate 8 and breaks through the edge rubber 4, there is a risk of scattering outside the machine. . Further, if the opening diameter of the upper surface plate 5 is made smaller than the outer diameter of the container 2, it is effective in confining debris at the time of breaking the rotor in the container 2 and preventing scattering to the outside of the machine 2. When the tube 13 containing the sample is taken out from the tube, if the tube 13 hits the edge rubber 4, the separation surface of the sample separated by the impact may become turbid. In this case, it is necessary to perform the centrifugation again. There was also.

図５に示した従来の遠心分離機は、容器２の外径Ｄを上面板５の開口部の穴径Ｄ1 より小さく設定して鍔部２Ａを上面板５の上面側に固定しているので、エッジゴム４を上面板５から外すと容器２を筐体１の上方に容易に引き出すことができる利点を有している。しかしながら、運転中にロータ１１の破壊によりバケット１２が遠心力で水平方向に飛び出して容器２に衝突したとき、容器２が外側に変形して破壊されると、鍔部２Ａは矢印１４で示すように斜め下方向の力を受けて変形するため、エッジゴム４を破断する。このため、エッジゴム４と裏板８との間のシールが破れて隙間が生じ、この隙間を通って破片が機外に飛散するという問題があった。また、容器２の鍔部２Ａをエッジゴム４の溝で保持した構造においては、ロータ１１の破壊にともないバケット１２が遠心力で水平方向に飛び出して容器２に衝突すると、その衝撃力により容器２は回転する。このため、エッジゴム４と鍔部２Ａとの間の摩擦力が大きくなり、回転力によってエッジゴム４が引き千切られると裏板８との間に隙間が生じ、この隙間から破片が機外に飛び散るといった問題もあった。 In the conventional centrifuge shown in FIG. 5, the outer diameter D of the container 2 is set smaller than the hole diameter D 1 of the opening of the upper surface plate 5, and the flange portion 2 A is fixed to the upper surface side of the upper surface plate 5. Therefore, when the edge rubber 4 is removed from the upper surface plate 5, there is an advantage that the container 2 can be easily pulled out above the housing 1. However, when the bucket 12 protrudes in the horizontal direction by the centrifugal force and collides with the container 2 due to the destruction of the rotor 11 during operation, if the container 2 is deformed to the outside and destroyed, the flange 2A is indicated by an arrow 14. The edge rubber 4 is broken in order to be deformed by receiving an obliquely downward force. For this reason, the seal between the edge rubber 4 and the back plate 8 is broken to form a gap, and there is a problem that the fragments are scattered outside the machine through the gap. Further, in the structure in which the flange portion 2A of the container 2 is held by the groove of the edge rubber 4, when the bucket 12 jumps out in the horizontal direction due to the centrifugal force and collides with the container 2, the container 2 is caused by the impact force. Rotate. For this reason, the frictional force between the edge rubber 4 and the flange portion 2A is increased, and when the edge rubber 4 is torn off by the rotational force, a gap is formed between the back plate 8 and debris scatters out of the machine. There was also a problem.

本発明は上述したような従来の問題を解決するためになされたもので、その目的とするところは、運転中に万一ロータが破壊しても破片が機外に飛散するおそれがなく、安全性をより一層向上させるとともに、容器を筐体から容易に取り出すことができるようにした遠心分離機の容器取付構造を提供することにある。   The present invention has been made in order to solve the above-described conventional problems. The purpose of the present invention is to ensure that even if the rotor breaks down during operation, there is no risk of debris scattering outside the machine. Another object of the present invention is to provide a container mounting structure for a centrifuge that can further improve the performance and can be easily taken out of the casing.

上記目的を達成するために本発明は、上方が開放している筐体と、この筐体内に配設され検体を遠心分離するロータを収納する鍔付きの容器と、前記筐体の上方開口部に設けられ前記容器が挿入される開口を有する上面板と、前記筐体に開閉自在に取付けられ前記筐体の上方面開口部を覆うドアと、前記上面板に取付けられ前記ドアの閉蓋時に前記ドアと前記上面板との間の隙間をシールするエッジゴムとを備えた遠心分離機において、前記上面板の開口部の径を前記容器の鍔部の外径より大きくし、前記上面板の裏面に容器支持用弾性部材を取付金具を介して取付け、前記容器を前記筐体内に前記上面板より下方に位置させて収納し、前記エッジゴムに前記上面板の下方に延在する押圧部を設け、この押圧部と前記容器支持用弾性部材とで前記容器の鍔部を挟持したものである。   In order to achieve the above object, the present invention includes a casing that is open at the top, a container with a hook that accommodates a rotor that is disposed in the casing and that centrifuges the specimen, and an upper opening of the casing. A top plate having an opening into which the container is inserted, a door attached to the housing so as to be openable and closable and covering an upper surface opening of the housing, and attached to the top plate when the door is closed In the centrifuge provided with an edge rubber that seals a gap between the door and the upper surface plate, the diameter of the opening of the upper surface plate is larger than the outer diameter of the flange portion of the container, and the rear surface of the upper surface plate The elastic member for supporting the container is attached via a mounting bracket, the container is housed in the housing so as to be positioned below the upper surface plate, and the edge rubber is provided with a pressing portion extending below the upper surface plate, With this pressing part and the elastic member for container support The flange portion of the serial container is obtained by sandwiching the.

また、本発明は、前記取付金具の剛性を前記上面板の剛性より低くしたものである。   In the present invention, the rigidity of the mounting bracket is lower than the rigidity of the upper surface plate.

さらに、本発明は、前記エッジゴムに環状溝を設け、この環状溝に押えリングを嵌着したものである。   Further, according to the present invention, an annular groove is provided in the edge rubber, and a presser ring is fitted into the annular groove.

本発明において、遠心分離機の運転時にロータが破壊すると、その破片やバケットはモータ軸を中心にして回転しながら、遠心力により水平方向に飛び出して容器の内壁面に衝突する。容器は、衝突する破片等の慣性により回転方向の力を受けることにより回転する。その際、容器の変形が容器の鍔部に及ぶが、鍔部はエッジゴムの押圧部と容器支持用弾性部材とによって弾性的に挟持されているので、鍔部が変形しても上面板やエッジゴムへの影響が少なく、ドアと上面板との間のシールを確保することができる。したがって、破片がドアと上面板との間の隙間を通って筐体外部に飛散するおそれがなく、遠心分離機の安全性を向上させることができる。また、容器の鍔部外径を上面板の開口部径より小さくしているので、容器を筐体の上方に容易に取り出すことができ、容器の洗浄を容易にする。   In the present invention, when the rotor breaks during the operation of the centrifuge, the fragments and buckets rotate around the motor shaft and jump out in the horizontal direction by the centrifugal force and collide with the inner wall surface of the container. A container rotates by receiving the force of a rotation direction by inertia, such as a collision piece. At that time, the deformation of the container reaches the heel part of the container, but the heel part is elastically sandwiched between the edge rubber pressing part and the elastic member for supporting the container. The seal between the door and the top plate can be secured. Therefore, there is no possibility that debris will be scattered outside the housing through the gap between the door and the top plate, and the safety of the centrifuge can be improved. Further, since the outer diameter of the collar portion of the container is smaller than the opening diameter of the upper surface plate, the container can be easily taken out above the casing, and the container can be easily cleaned.

また、取付金具の剛性を上面板の剛性より低くしているので、ロータの破壊時にその破片等が水平方向に飛び出して容器が破壊すると、鍔部は下方向の力を受けて容器支持用弾性部材を押し下げる。このため、取付金具が下方に変形することで、上面板およびエッジゴムに対してほとんど影響を及ぼすことがなく、エッジゴムの破損を防止することができる。   In addition, since the rigidity of the mounting bracket is lower than the rigidity of the top plate, when the rotor breaks and its fragments jump out in the horizontal direction and the container breaks, the collar receives elastic force for container support. Press down on the member. For this reason, since the mounting bracket is deformed downward, the upper surface plate and the edge rubber are hardly affected, and the edge rubber can be prevented from being damaged.

以下、本発明を図面に示す実施の形態に基づいて詳細に説明する。
図１は本発明に係る容器取付構造を採用した遠心分離機の閉蓋状態を示す側断面図、図２は同遠心分離機の筐体の平面図、図３は図２のＡ−Ａ線拡大断面図である。なお、図１では、左半分が運転時のバケットの状態とバケットの衝突によって容器が破壊された状態を示し、右半分がバケットの停止状態を示している。 Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
1 is a side sectional view showing a closed state of a centrifuge adopting a container mounting structure according to the present invention, FIG. 2 is a plan view of a casing of the centrifuge, and FIG. 3 is a line AA in FIG. It is an expanded sectional view. In FIG. 1, the left half shows the state of the bucket during operation and the state in which the container is destroyed by the collision of the bucket, and the right half shows the stopped state of the bucket.

図１〜図３において、全体を参照符号２０で示す遠心分離機は、上方が開放した直方体状の筐体２１と、この筐体２１の上方を覆う開閉自在なドア２２と、前記筐体２１内に収納された鍔付き容器２３と、この容器２３内に収納された遠心分離機用ロータ２４と、このロータ２４を遠心分離時に高速回転させる駆動モータ２５と、前記筐体２１の上方開口部に設けられた上面板２６と、この上面板２６に取付けられたエッジゴム２７と、前記筐体２１と前記駆動モータ２５との間に介在された防振ダンパ２８等を備えている。   1 to 3, a centrifuge generally indicated by reference numeral 20 includes a rectangular parallelepiped casing 21 that is open at the top, an openable / closable door 22 that covers the top of the casing 21, and the casing 21. A container 23 with a cage housed therein, a centrifuge rotor 24 housed in the container 23, a drive motor 25 for rotating the rotor 24 at a high speed during centrifugation, and an upper opening of the housing 21 A top plate 26, an edge rubber 27 attached to the top plate 26, a vibration damper 28 interposed between the housing 21 and the drive motor 25, and the like.

前記筐体２１の前面板２１Ａは、上部に前下がりに傾斜した傾斜部３０を有し、この傾斜部３０には、スタートボタン、遠心分離の条件（時間、回転速度等）等を設定するための各種ボタン、ＬＥＤ表示装置等（図示せず）を配設してなるスイッチパネル３１が設けられている。   The front plate 21A of the casing 21 has an inclined portion 30 inclined forward and downward in order to set a start button, centrifugation conditions (time, rotational speed, etc.), etc. A switch panel 31 having various buttons, an LED display device and the like (not shown) is provided.

前記容器２３は、上方が開放している有底円筒状の本体２３Ａと、この本体２３Ａの上端開口部に一体に延設された円形の鍔部２３Ｂとで構成され、前記駆動モータ２５のハウジング２５Ａの上部にベローズ３４を介して固定されている。   The container 23 includes a bottomed cylindrical main body 23A that is open at the top, and a circular flange 23B that is integrally extended to the upper end opening of the main body 23A. It is fixed to the upper part of 25A via a bellows 34.

前記ロータ２４は、駆動モータ２５の回転軸３６に取付けられた平面視十字状の支持アーム３７と、この支持アーム３７の各アーム部３７ａに２本の支持軸（トラニオンピン）３９によってそれぞれ回動自在かつ着脱可能に取付けられ検体を収容するチューブ１３が装填される４つのバケット１２とを備えたスイングロータで構成されている。ただし、遠心分離機用ロータ２４としては、スイングロータに限らずアングルロータであってもよい。支持軸３９は、バケット１２の外周に突設されており、アーム部３７ａの先端部上面に形成されている溝４１に上方から挿入されることにより回動自在に支持される。   The rotor 24 is rotated by a support arm 37 having a cross shape in plan view attached to the rotation shaft 36 of the drive motor 25 and two support shafts (trunion pins) 39 on each arm portion 37a of the support arm 37. The swing rotor includes four buckets 12 that are freely and detachably attached and are loaded with tubes 13 that contain specimens. However, the centrifuge rotor 24 is not limited to a swing rotor and may be an angle rotor. The support shaft 39 protrudes from the outer periphery of the bucket 12 and is rotatably supported by being inserted from above into a groove 41 formed on the top surface of the distal end portion of the arm portion 37a.

前記筐体２１の上方開口部の周縁部を覆う前記上面板２６は、前記容器２３の上方への取り出しを可能にする円形の開口部４４を有し、容器２３の鍔部２３Ｂよりも上方に位置している。前記開口部４４の内径Ｄ2 （図３）は、容器２３の鍔部２３Ｂの外径Ｄ３より若干大きく設定されている（Ｄ2 ＞Ｄ3 ）。ここで、本実施の形態においては板金の折曲加工によって筐体２１と上面板２６を一体に形成した例を示しているが、これに限らずこれら両部材を別個に製作して上面板２６を筐体２１の上面開口部に溶接等によって接合してもよい。 The upper surface plate 26 covering the peripheral edge of the upper opening of the housing 21 has a circular opening 44 that allows the container 23 to be taken out upward, and is located above the flange 23B of the container 23. positioned. An inner diameter D 2 (FIG. 3) of the opening 44 is set to be slightly larger than an outer diameter D3 of the flange 23B of the container 23 (D 2 > D 3 ). Here, in the present embodiment, an example is shown in which the casing 21 and the upper surface plate 26 are integrally formed by bending a sheet metal. However, the present invention is not limited to this, and the upper surface plate 26 is manufactured separately. May be joined to the upper surface opening of the casing 21 by welding or the like.

前記エッジゴム２７は、図３に示すように、内周面に開放する環状溝４５を有する環状のゴム本体２７Ａと、このゴム本体２７Ａの上面中央に延設された環状のひれ部２７Ｂと、ゴム本体２７Ａの下面内周縁側に一体に垂設された環状の押圧部２７Ｃと、ゴム本体２７Ａの上側内周縁に垂設され前記環状溝４５の開口部を覆う折曲部２７Ｄとで構成され、押えリング４６とともに上面板２５の上面に複数本の止めねじ４７によって固定されている。押えリング４６は、エッジゴム２７の環状溝４５に嵌着されており、止めねじ４７が挿通される複数個のねじ取付用孔が形成されている。前記ひれ部２７Ｂは、ドア２２の閉蓋時にドア２２の裏板４８が密接することにより、ドア２２と上面板２６との間の隙間をシールする。前記押圧部２７Ｃは、上面板２６の内周縁に沿って筐体２１内に挿入され、容器２３の鍔部２３Ｂを押圧している。   As shown in FIG. 3, the edge rubber 27 includes an annular rubber body 27A having an annular groove 45 opened on the inner peripheral surface, an annular fin portion 27B extending in the center of the upper surface of the rubber body 27A, and a rubber. An annular pressing portion 27C that is integrally suspended on the inner peripheral edge of the lower surface of the main body 27A, and a bent portion 27D that is suspended on the upper inner peripheral edge of the rubber main body 27A and covers the opening of the annular groove 45, Along with the presser ring 46, the upper surface plate 25 is fixed to the upper surface by a plurality of set screws 47. The presser ring 46 is fitted into the annular groove 45 of the edge rubber 27, and a plurality of screw mounting holes through which the set screws 47 are inserted are formed. The fin portion 27 </ b> B seals the gap between the door 22 and the upper surface plate 26 by bringing the back plate 48 of the door 22 into close contact when the door 22 is closed. The pressing portion 27 </ b> C is inserted into the housing 21 along the inner peripheral edge of the upper surface plate 26 and presses the flange portion 23 </ b> B of the container 23.

さらに、前記上面板２６の下面には、例えば６個の容器支持用弾性部材５０が取付金具５１を介し、かつ開口部４４の周方向に略等間隔おいてそれぞれ取付けられている。容器支持用弾性部材５０は、図３に示すように断面形状がＵ字状に形成されていることにより、前記取付金具５１が差し込まれる溝５２を有し、容器２３が筐体２１内に装着することにより、鍔部２３Ｂを下方から受け止めて支持し、エッジゴム２７が上面板２６に取付けられ、押圧部２７Ｃが鍔部２３Ｂに押し付けられると、押圧部２７Ｃとともに鍔部２３Ｂを挟持する。   Further, for example, six container supporting elastic members 50 are respectively attached to the lower surface of the upper surface plate 26 via mounting brackets 51 at substantially equal intervals in the circumferential direction of the opening 44. As shown in FIG. 3, the container supporting elastic member 50 has a U-shaped cross section so that it has a groove 52 into which the mounting bracket 51 is inserted, and the container 23 is mounted in the housing 21. By doing so, the collar part 23B is received and supported from below, and when the edge rubber 27 is attached to the upper surface plate 26 and the pressing part 27C is pressed against the collar part 23B, the collar part 23B is clamped together with the pressing part 27C.

前記取付金具５１は、金属板の折曲加工によって形成されていることにより、水平な固定部５１Ａと、この固定部５１Ａより低い水平な弾性部材取付部５１Ｂと、固定部５１Ａと弾性部材取付部５１Ｂとを連結する垂直な連結部５１Ｃとを一体に有し、固定部５１Ａが上面板２６の下面に溶接等によって固定され、弾性部材取付部５１Ｂが容器２３の鍔部２３Ｂの下方に位置し、前記容器支持用弾性部材５０が取付けられている。このような取付金具５１は、上面板２６より剛性が低くなるように形成されている。取付金具５１の剛性を上面板２６の剛性より低くする方法としては、同一材料で形成する場合、板厚を薄くすればよい。また、取付金具５１の幅を狭くすればよい。一方、異種材料で形成する場合は、上面板２６より柔らかい材質を選択すればよい。   Since the mounting bracket 51 is formed by bending a metal plate, a horizontal fixing portion 51A, a horizontal elastic member mounting portion 51B lower than the fixing portion 51A, a fixing portion 51A, and an elastic member mounting portion. And a vertical connecting portion 51C for connecting to 51B, the fixing portion 51A is fixed to the lower surface of the top plate 26 by welding or the like, and the elastic member mounting portion 51B is located below the flange portion 23B of the container 23. The container supporting elastic member 50 is attached. Such a mounting bracket 51 is formed to have lower rigidity than the upper surface plate 26. As a method of making the rigidity of the mounting bracket 51 lower than the rigidity of the upper surface plate 26, when the same material is used, the plate thickness may be reduced. Further, the width of the mounting bracket 51 may be narrowed. On the other hand, in the case of forming with a different material, a material softer than the upper surface plate 26 may be selected.

このような構造からなる遠心分離機２０の容器取付構造によれば、ロータ破壊時のエッジゴム２７への影響が少なく、破片が筐体外部に飛散するのを防止することができる。すなわち、容器２３の鍔部２３Ｂをエッジゴム２７の押圧部２７Ｃと、上面板２６の下面側に剛性の低い取付金具５１を介して配設した容器支持用弾性部材５０とによって挟持するだけで、接着剤、止めねじ等を用いて固定していないので、ロータ２４の破壊時にバケット１２や支持アーム３７等の破片が駆動モータ２５の回転軸３６を中心にして回転しながら遠心力により水平方向に飛び出して容器２３の内壁面に衝突する。すると容器２３は破片等の衝突による偶力（回転力）によって回転する。このとき、鍔部２３Ｂとエッジゴム２７および容器支持用弾性部材５０との間には滑りが生じるため、容器２３のみが回転し、エッジゴム２７には回転が伝わらない。また、破片の衝突によって容器２３の本体２３Ａが変形して破壊すると、鍔部２３Ｂは下方向の力を受けて変形し容器支持用弾性部材５０を押し下げる。このため、取付金具５１が図３に２点鎖線で示すように下方に変形するだけで、上面板２６やエッジゴム２７にはほとんど影響を及ぼすことがない。したがって、エッジゴム２７が容器２３の回転力によって破断したり、ドア２２とエッジゴム２７との間に隙間ができて破片がこの隙間を通って機外に飛散するといったおそれがなく、遠心分離機２０の安全性を向上させることができる。   According to the container mounting structure of the centrifuge 20 having such a structure, there is little influence on the edge rubber 27 when the rotor is broken, and it is possible to prevent debris from being scattered outside the casing. In other words, the flange 23B of the container 23 is bonded only by being sandwiched between the pressing portion 27C of the edge rubber 27 and the container supporting elastic member 50 disposed on the lower surface side of the upper surface plate 26 via the attachment member 51 having low rigidity. Since it is not fixed by using an agent, a set screw, etc., fragments such as the bucket 12 and the support arm 37 pop out in the horizontal direction by centrifugal force while rotating around the rotation shaft 36 of the drive motor 25 when the rotor 24 is broken. And collide with the inner wall surface of the container 23. Then, the container 23 is rotated by a couple (rotational force) due to a collision of fragments and the like. At this time, since slip occurs between the flange 23B, the edge rubber 27, and the container supporting elastic member 50, only the container 23 rotates, and the rotation is not transmitted to the edge rubber 27. Further, when the main body 23A of the container 23 is deformed and broken due to the collision of the fragments, the flange 23B is deformed by receiving the downward force and pushes down the container supporting elastic member 50. For this reason, only the mounting bracket 51 is deformed downward as shown by a two-dot chain line in FIG. 3, and the upper surface plate 26 and the edge rubber 27 are hardly affected. Therefore, there is no possibility that the edge rubber 27 is broken by the rotational force of the container 23 or that a gap is formed between the door 22 and the edge rubber 27 and fragments are scattered outside the machine through this gap. Safety can be improved.

また、ドア２２を開き、止めねじ４７を緩めてエッジゴム２７を上面板２６から外すと、容器２３を上面板２６の開口部４４から筐体２１の上方に引き出すことができるので、容器２３を容易に掃除することができる。   Further, when the door 22 is opened, the set screw 47 is loosened, and the edge rubber 27 is removed from the upper surface plate 26, the container 23 can be pulled out from the opening 44 of the upper surface plate 26 to the upper side of the housing 21, so that the container 23 can be easily removed. Can be cleaned.

さらに、エッジゴム２７の環状溝４５に押えリング４６を嵌着しているので、エッジゴム２７の変形、破損等を抑えることができる。   Furthermore, since the presser ring 46 is fitted into the annular groove 45 of the edge rubber 27, deformation, breakage, etc. of the edge rubber 27 can be suppressed.

本発明に係る容器取付構造を採用した遠心分離機の閉蓋状態を示す側断面図である。It is a sectional side view which shows the closed state of the centrifuge which employ | adopted the container attachment structure which concerns on this invention. 遠心分離機の筐体の平面図である。It is a top view of the housing | casing of a centrifuge. 図２のＡ−Ａ線拡大断面図である。It is an AA line expanded sectional view of FIG. 従来の遠心分離機における容器の取付構造の要部を示す断面図である。It is sectional drawing which shows the principal part of the attachment structure of the container in the conventional centrifuge. 従来の他の遠心分離機における容器の取付構造の要部を示す断面図である。It is sectional drawing which shows the principal part of the attachment structure of the container in the other conventional centrifuge.

符号の説明Explanation of symbols

１２…バケット、２０…遠心分離機、２１…筐体、２２…ドア、２３…容器、２３Ａ…本体、２３Ｂ…鍔部、２４…遠心分離機用ロータ、２５…駆動モータ、２６…上面板、２７…エッジゴム、２７Ｃ…押圧部、４５…環状溝、４６…押えリング、５０…容器支持用弾性部材、５１…取付金具。   DESCRIPTION OF SYMBOLS 12 ... Bucket, 20 ... Centrifuge, 21 ... Housing, 22 ... Door, 23 ... Container, 23A ... Main body, 23B ... Bump, 24 ... Centrifuge rotor, 25 ... Drive motor, 26 ... Top plate, 27: edge rubber, 27C: pressing portion, 45: annular groove, 46: pressing ring, 50: elastic member for container support, 51: mounting bracket.

Claims (3)

上方が開放している筐体と、この筐体内に配設され検体を遠心分離するロータを収納する鍔付きの容器と、前記筐体の上方開口部に設けられ前記容器が挿入される開口を有する上面板と、前記筐体に開閉自在に取付けられ前記筐体の上方面開口部を覆うドアと、前記上面板に取付けられ前記ドアの閉蓋時に前記ドアと前記上面板との間の隙間をシールするエッジゴムとを備えた遠心分離機において、
前記上面板の開口部の径を前記容器の鍔部の外径より大きくし、前記上面板の裏面に容器支持用弾性部材を取付金具を介して取付け、前記容器を前記筐体内に前記上面板より下方に位置させて収納し、前記エッジゴムに前記上面板の下方に延在する押圧部を設け、この押圧部と前記容器支持用弾性部材とで前記容器の鍔部を挟持したことを特徴とする遠心分離機の容器取付構造。 A housing that is open at the top, a container with a hook that accommodates a rotor that is disposed in the housing and that centrifuges the sample, and an opening that is provided in the upper opening of the housing and into which the container is inserted. An upper surface plate, a door that is openably and closably attached to the housing and covers an upper surface opening of the housing, and a gap between the door and the upper surface plate that is attached to the upper surface plate and closes the door In a centrifuge with an edge rubber that seals
The diameter of the opening of the upper surface plate is made larger than the outer diameter of the flange portion of the container, a container supporting elastic member is attached to the back surface of the upper surface plate via a mounting bracket, and the container is placed in the casing in the upper surface plate. It is stored in a lower position, the edge rubber is provided with a pressing portion extending below the upper surface plate, and the flange portion of the container is sandwiched between the pressing portion and the container supporting elastic member. Centrifuge container mounting structure. 前記取付金具の剛性を前記上面板の剛性より低くしたことを特徴とする請求項１記載の遠心分離機の容器取付構造。   2. The centrifuge container mounting structure according to claim 1, wherein the mounting bracket has a lower rigidity than that of the upper surface plate. 前記エッジゴムに環状溝を設け、この環状溝に押えリングを嵌着したことを特徴とする請求項１または２記載の遠心分離機の容器取付構造。   The container mounting structure for a centrifuge according to claim 1 or 2, wherein an annular groove is provided in the edge rubber, and a pressing ring is fitted into the annular groove.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100311560A1 (en) * 2008-02-13 2010-12-09 Beckman Coulter, Inc. Liquid Sample Collection Device for Zonal Centrifugation
JP2017176608A (en) * 2016-03-31 2017-10-05 日清食品ホールディングス株式会社 Steaming device

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Publication number Priority date Publication date Assignee Title
JPS609552A (en) * 1983-06-30 1985-01-18 Mitsubishi Heavy Ind Ltd Oscillation device
JPS6287265A (en) * 1985-10-14 1987-04-21 Hitachi Koki Co Ltd Door for centrifuge
JPS63126572A (en) * 1986-11-03 1988-05-30 イー・アイ・デュポン・ド・ネモアース・アンド・コンパニー Detachable door-seal assembly of centrifugal separator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609552A (en) * 1983-06-30 1985-01-18 Mitsubishi Heavy Ind Ltd Oscillation device
JPS6287265A (en) * 1985-10-14 1987-04-21 Hitachi Koki Co Ltd Door for centrifuge
JPS63126572A (en) * 1986-11-03 1988-05-30 イー・アイ・デュポン・ド・ネモアース・アンド・コンパニー Detachable door-seal assembly of centrifugal separator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100311560A1 (en) * 2008-02-13 2010-12-09 Beckman Coulter, Inc. Liquid Sample Collection Device for Zonal Centrifugation
US8702577B2 (en) * 2008-02-13 2014-04-22 Beckman Coulter, Inc. Liquid sample collection device for zonal centrifugation
JP2017176608A (en) * 2016-03-31 2017-10-05 日清食品ホールディングス株式会社 Steaming device

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