JP4774013B2

JP4774013B2 - Electromagnetic diaphragm pump

Info

Publication number: JP4774013B2
Application number: JP2007127842A
Authority: JP
Inventors: 功一柳; 秀彦出口
Original assignee: Yasunaga Air Pump Inc
Current assignee: Yasunaga Air Pump Inc
Priority date: 2007-05-14
Filing date: 2007-05-14
Publication date: 2011-09-14
Anticipated expiration: 2027-05-14
Also published as: JP2008280970A

Description

本発明は、電磁石によりダイヤフラムを変位させてポンプ動作させる電磁式ダイヤフラムポンプに関する。 The present invention relates to an electromagnetic diaphragm pump that performs a pump operation by displacing a diaphragm with an electromagnet.

養殖水槽や家庭用浄化などでは、酸素の補給や曝気のために電磁式ダイヤフラムポンプを用いて、空気を送り込むことが行われている（エアポンプ）。
一般にこうした電磁式ダイヤフラムポンプには、電磁石を用いた電磁部と、ダイヤフラムを用いたポンプ部とを組み合わせた構造が用いられる。具体的には、電磁部には、交番する磁界を一対の電磁石に発生させて、振動子を往復運動させる構造が用いられる。ポンプ部には、振動子にダイヤフラムを連結した構造が用いられ、振動子の往復運動でダイヤフラムを変位させて空気圧送させるようにしている。 In aquaculture tanks and household purification, air is supplied using an electromagnetic diaphragm pump for supplying oxygen and aeration (air pump).
In general, such an electromagnetic diaphragm pump uses a structure in which an electromagnetic part using an electromagnet and a pump part using a diaphragm are combined. Specifically, a structure in which an alternating magnetic field is generated in a pair of electromagnets to reciprocate the vibrator is used for the electromagnetic part. In the pump unit, a structure in which a diaphragm is connected to a vibrator is used, and the diaphragm is displaced by a reciprocating motion of the vibrator so as to be pneumatically fed.

ところで、電磁式ダイヤフラムポンプの振動子は、ダイヤフラムによって保持されている。このため、ダイヤフラムが経年劣化すると、ダイヤフラムの剛性が低下して、通常時とは異なる動きで振動子が運動することがある（異常）。
ところが、振動子は、一対の電磁石間の限られたスペースに配置される部品なので、異常に振動子が動くと、振動子が周辺に配置されている電磁石やその他の部品と接触しながら不規則に動作する傾向にある。このため、周辺の部品を破損させるおそれがある。こうした振動子の異常な挙動は、ダイヤフラムに限らず、ポンプ部の吸気弁や排気弁を構成する弁体が経年劣化する場合にも発生する。 Incidentally, the vibrator of the electromagnetic diaphragm pump is held by the diaphragm. For this reason, when the diaphragm deteriorates over time, the rigidity of the diaphragm decreases, and the vibrator may move with a motion different from the normal time (abnormal).
However, since the vibrator is a part that is placed in a limited space between a pair of electromagnets, if the vibrator moves abnormally, the vibrator is irregularly in contact with the surrounding electromagnets and other parts. Tend to work. For this reason, there is a risk of damage to peripheral components. Such an abnormal behavior of the vibrator occurs not only in the diaphragm but also in the case where the valve bodies constituting the intake valve and the exhaust valve of the pump part deteriorate over time.

そこで、電磁式ダイヤフラムポンプでは、振動子の異常な動きを検出する異常検出装置を組み込むことが行われている。異常検出装置には、例えば特許文献１に開示されているように振動子の往復運動方向の動きが、予め定められている許容値を超えると、Ｌ形の検知アームが動作して、可動片を支持している部分を、てこの原理により破断させて、電磁石の電源を断つ構造や、特許文献２に開示されているように振動子の往復運動方向の動きが、予め定められている許容値を超えると、レバーを変位させて、マイクロスイッチをオンオフ動作させる構造や、特許文献３に開示されているように振動子の往復運動方向と直交する方向の動きが、予め定められている許容値を超えると、その動きで、電磁石の導電パターンを破断させて電磁石の電源を断つ構造などが用いられる。
実開平２− ７６１８３号公報特開平１１−１５９４６２号公報実用新案登録第２５３０３９９号 Therefore, in an electromagnetic diaphragm pump, an abnormality detection device that detects abnormal movement of a vibrator is incorporated. In the abnormality detection device, for example, as disclosed in Patent Document 1, when the movement of the vibrator in the reciprocating direction exceeds a predetermined allowable value, the L-shaped detection arm operates to move the movable piece. The structure that breaks the portion that supports the lever by the lever principle and cuts off the power supply of the electromagnet, and the movement in the reciprocating direction of the vibrator as disclosed in Patent Document 2 is set in advance. When the value is exceeded, the lever is displaced and the microswitch is turned on and off, and the movement in the direction perpendicular to the reciprocating direction of the vibrator as disclosed in Patent Document 3 is determined in advance. When the value is exceeded, a structure in which the electromagnet's conductive pattern is broken and the electromagnet's power source is cut off is used.
Japanese Utility Model Publication 2-76183 Japanese Patent Laid-Open No. 11-159462 Utility model registration No. 2530399

特許文献１〜３は、振動子の往復運動方向の異常な挙動を検出する技術か、振動子の往復運動方向とは直交する方向の異常な挙動を検出する技術かのどちらかを選択して採用するものである。
ところで、ダイヤフラムや弁部材の経年劣化を要因として生ずる振動子の異常な挙動には、振動子が往復運動方向での許容値を越えて変位するだけの場合と、振動子が上記許容値を越えない範囲内で往復動しながら、往復運動方向と直交する方向だけ、周辺の機器との接触をきたす偏りが生じる場合との双方が生じることがある。 Patent Documents 1 to 3 select either a technique for detecting an abnormal behavior in the reciprocating direction of the vibrator or a technique for detecting an abnormal behavior in a direction orthogonal to the reciprocating direction of the vibrator. Adopted.
By the way, the abnormal behavior of the vibrator, which is caused by the deterioration of the diaphragm and the valve member over time, includes the case where the vibrator only displaces beyond the allowable value in the reciprocating direction, and the vibrator exceeds the allowable value. While reciprocating within a non-existing range, there may be a case where there is a bias that causes contact with peripheral devices only in a direction orthogonal to the reciprocating direction.

このような振動子の異常を検出する場合、特許文献１〜３に開示された技術を選択するのでは、対処できない。
そのため、対処には、振動子の往復運動方向の異常な挙動を検出する技術と、振動子の往復運動方向とは直交する方向の異常な挙動を検出する技術との双方を併用することが考えられる。 When such an abnormality of the vibrator is detected, it cannot be dealt with by selecting the technique disclosed in Patent Documents 1 to 3.
For this reason, it is conceivable to use both a technology for detecting abnormal behavior in the reciprocating direction of the vibrator and a technology for detecting abnormal behavior in a direction orthogonal to the reciprocating direction of the vibrator. It is done.

ところが、特許文献１〜３に示されるように振動子の往復運動方向の異常挙動を検出する技術と、振動子の往復運動方向とは直交する方向の移動挙動を検出する技術は、検出構造が全く異なる。このため、単に双方の技術を組み合わせると、２種類の検出構造を採用する結果、部品点数が多くなり、かなりコスト的な負担が大きくなる問題がある。
そこで、本発明の目的は、部品点数を抑えた構造で、振動子の往復運動方向の異常な動きと、振動子の往復運動方向とは直交する異常な動きとの双方の検出を可能とした電磁式ダイヤフラムポンプを提供することにある。 However, as shown in Patent Documents 1 to 3, a technique for detecting an abnormal behavior in the reciprocating direction of the vibrator and a technique for detecting a moving behavior in a direction orthogonal to the reciprocating direction of the vibrator have a detection structure. Completely different. For this reason, when both technologies are simply combined, there is a problem in that the number of parts increases as a result of adopting two types of detection structures, and the cost burden increases considerably.
Therefore, an object of the present invention is to have a structure with a reduced number of parts, and to detect both an abnormal movement in the reciprocating motion direction of the vibrator and an abnormal motion orthogonal to the reciprocating motion direction of the vibrator. The object is to provide an electromagnetic diaphragm pump.

請求項１に記載の発明は、上記目的を達成するために、異常検出装置には、通常位置と異常位置の２つの位置の間を変位可能とした可動部材と、振動子の往復運動方向の動きが許容値を超えると、当該振動子の異常な変位を可動部材へ伝えて可動部材を通常位置から異常位置へ変位させる第１伝達部と、振動子の往復運動方向と直交する方向の動きが許容値を超えると、当該振動子の異常な変位を可動部材へ伝えて可動部材を通常位置から異常位置へ変位させる第２伝達部と、可動部材が異常位置へ変位するにしたがい異常信号が出力される異常信号出力部とを有し、前記可動部材が、振動子と対向して一対の電磁石間に配置され、両端部が振動子の往復運動方向に向き、一側部が振動子を挟んで当該振動子の往復運動方向と直交する方向の片側へ延び、他側部が反対側へ延び、かつ両側部間を支点として回動自在に支持され、所定の定位置が通常位置に設定され、当該定位置からずれた回動位置が異常位置として設定された回動部材を有してなり、前記第１伝達部が、前記振動子から、対向する回動部材の中間に向って突き出るボス部と、回動部材の両端部に、それぞれボス部から、振動子の往復運動方向方の許容値を規定する許容量、離して設けられ、振動子の往復運動方向の動きが許容値を超えると、ボス部と突き当たり、回動部材を通常位置から異常位置へ回動変位させる第１当接面とを有してなり、前記第２伝達部が、回動部材の両側部に、それぞれボス部から、振動子の往復運動方向と直交する方向の許容値を規定する許容量、離して設けられ、振動子の往復運動方向と直交する方向の動きが許容値を超えると、ボス部と突き当たり、回動部材を通常位置から異常位置へ回動変位させる第２当接面を有した構成を採用した。 In order to achieve the above object, according to the first aspect of the present invention, the abnormality detection device includes a movable member that is displaceable between two positions, a normal position and an abnormal position, and a reciprocating motion direction of the vibrator. When the movement exceeds an allowable value, a first transmission unit that transmits an abnormal displacement of the vibrator to the movable member to displace the movable member from the normal position to the abnormal position, and a movement in a direction orthogonal to the reciprocating direction of the vibrator Exceeds the allowable value, an abnormal signal of the vibrator is transmitted to the movable member to displace the movable member from the normal position to the abnormal position, and an abnormal signal is generated as the movable member is displaced to the abnormal position. An abnormal signal output section to be output , the movable member is disposed between a pair of electromagnets facing the vibrator, both end portions are directed in the reciprocating direction of the vibrator, and one side portion is the vibrator. Across the direction of the reciprocating motion of the vibrator Side, the other side extends to the opposite side, and is supported so as to be rotatable about both sides as a fulcrum, a predetermined fixed position is set as the normal position, and the rotational position deviated from the fixed position is an abnormal position. And the first transmission portion has a boss projecting from the vibrator toward the middle of the opposing rotation member and both ends of the rotation member. If the movement in the reciprocating direction of the vibrator exceeds the allowable value, the boss part will be abutted and the rotating member will be in the normal position. A first abutting surface that pivots and displaces to an abnormal position from the boss portion on each side of the pivot member, and a direction perpendicular to the reciprocating motion direction of the vibrator. The reciprocating direction of the vibrator, which is provided at a distance, which defines the permissible value of When orthogonal directions of movement exceeds the allowable value, it abuts a boss portion, and employs a configuration having a second abutment surface for rotational displacement of the rotating member from a normal position to an abnormal position.

同構成によると、振動子の異なる方向の許容値を越えた動きは、いずれも共通の可動部材に伝達される。この動きが、可動部材を経て、異常信号出力部へ至り、それぞれの異常が異常信号出力部からの出力で検出される。さらに簡単な構造ですむ。 According to the same configuration, any movement of the vibrator exceeding the allowable value in different directions is transmitted to the common movable member. This movement reaches the abnormal signal output unit through the movable member, and each abnormality is detected by the output from the abnormal signal output unit . It is a simple structure without the of et al.

請求項２に記載の発明は、さらに加え、振動子の往復運動方向には異常がなく、振動子の往復運動方向とは直交する向きの動きに対して異常があるような挙動の検出が確実に行えるよう、第１当接面には、回動部材の両端部に互い違いに設けられ、ボス部と突き当たるにしたがい、回動部材に回動変位を誘起させる斜面を用い、第２当接面には、回動部材の両側部に斜面から該斜面の反対側の端まで連続して形成され、ボス部と突き当たるにしたがい、回動部材に回動変位を誘起させる壁面を用いた。 In addition, the invention according to claim 2 further reliably detects a behavior in which there is no abnormality in the reciprocating direction of the vibrator and there is an abnormality with respect to a movement in a direction orthogonal to the reciprocating direction of the vibrator. The first abutting surface is provided alternately at both ends of the rotating member, and the second abutting surface is provided with an inclined surface that induces rotational displacement in the rotating member as it abuts the boss portion. In this case, a wall surface that is continuously formed on both sides of the rotating member from the inclined surface to the opposite end of the inclined surface and induces rotational displacement in the rotating member as it hits the boss portion is used.

請求項３に記載の発明は、上記目的に加え、異常の検出後、検出部品の交換を必要とせずに、容易に通常状態に復帰されるよう、可動部材は、異常位置に変位した可動部材を通常位置へ手動操作で復帰させる操作部を有した構成とし、異常信号出力部は、可動部材が手動操作で通常位置に復帰されると、通常状態に復帰するマイクスイッチで構成した。 According to a third aspect of the present invention, in addition to the above object, the movable member is displaced to an abnormal position so that it can be easily returned to the normal state after the detection of the abnormality without requiring replacement of the detection component. The abnormality signal output unit is configured by a microphone switch that returns to the normal state when the movable member is returned to the normal position by manual operation.

請求項１の発明によれば、部品点数を抑えた異常検出装置で、振動子の往復運動方向の異常な動きと、振動子の往復運動方向とは直交する異常な動きとの双方を検出することができる。しかも、双方の検出は、振動子に設けたボス部を通じて、回動自在な回動部材へ伝えるだけの構造ですむので、異常検出装置は、一層、簡単な構造ですむ。 According to the first aspect of the present invention, the abnormality detecting device that suppresses the number of parts detects both the abnormal movement in the reciprocating direction of the vibrator and the abnormal movement orthogonal to the reciprocating direction of the vibrator. it is possible. In addition, since the detection of both is simply transmitted to the rotatable rotating member through the boss provided on the vibrator, the abnormality detecting device can be further simplified.

請求項２の発明によれば、さらに、確実に、振動子の往復運動方向の動きに問題の無い状況の中で生ずる振動子の往復運動方向と直交する方向の異常な動きを検出することができる。
請求項３の発明によれば、加えて、異常の検出後、操作部を操作するだけで、可動部材およびマイクロスイッチが通常状態に復帰するので、部品などの交換を必要とせずに、容易に異常検出装置を通常状態に復帰させることができる。 According to the second aspect of the present invention, it is possible to reliably detect abnormal movement in a direction orthogonal to the reciprocating direction of the vibrator, which occurs in a situation where there is no problem in the movement of the vibrator in the reciprocating direction. it can.
According to the invention of claim 3 , in addition, after the abnormality is detected, the movable member and the micro switch are returned to the normal state only by operating the operation part, so that it is possible to easily replace the parts without requiring replacement. The abnormality detection device can be returned to the normal state.

以下、本発明を図１〜図９に示す一実施形態にもとづいて説明する。
図１は電磁式ダイヤフラムポンプの概観を示し、図２は同ポンプのカバーを取り外した
状態を示し、図３は図２中のＡ−Ａ線に沿う平断面図を示し、図４は図２中のＢ矢視から見た図を示し、図５は異常検出装置の概観を示し、図６は同異常検出装置の主要部を分解した図を示し、図７〜図９はその異常検出装置の挙動をそれぞれ示している。 Hereinafter, the present invention will be described based on an embodiment shown in FIGS.
1 shows an overview of an electromagnetic diaphragm pump, FIG. 2 shows a state in which the cover of the pump is removed, FIG. 3 shows a plan sectional view along the line AA in FIG. 2, and FIG. FIG. 5 shows an overview of the abnormality detection device, FIG. 6 shows an exploded view of the main part of the abnormality detection device, and FIGS. 7 to 9 show the abnormality detection device. Each behavior is shown.

電磁式ダイヤフラムポンプは、図１および図２に示されるように例えば上部が開口し、両側にポンプ組付け口１ａを有するケーシング１と、同ケーシング１の開口を閉塞するカバー２とを有して構成される本体３をもつ。この本体３内に電磁部５が収められる。また電磁部５を挟んだケーシング１の両側には一対のポンプ部１０がそれぞれ組み付けられ、電磁式ダイヤフラムポンプの主要部を構成している。 As shown in FIG. 1 and FIG. 2, the electromagnetic diaphragm pump has, for example, a casing 1 that is open at the top and has pump assembly ports 1 a on both sides, and a cover 2 that closes the opening of the casing 1. It has a body 3 that is configured. The electromagnetic part 5 is accommodated in the main body 3. Moreover, a pair of pump parts 10 are respectively assembled on both sides of the casing 1 with the electromagnetic part 5 interposed therebetween, and constitute a main part of the electromagnetic diaphragm pump.

このうち電磁部５は、図３に示されるように隙間Ｓを存してケーシング１内の前後に収められた一対の電磁石６と、電磁石６の隙間Ｓに往復動可能に配置された振動子７とを有して構成される。振動子７は、例えば隙間方向に沿って延びた本体部８と、この本体部８に組み込まれた一対の永久磁石９とを有して構成される。これにより、電磁石６に交流電圧を印加して、電磁石６の鉄心６ａに交番する磁界を発生させると、振動子７が、永久磁石８で行われる反発や吸引の繰り返しにより、鉄心６ａの中心軸を振幅の中心として、図３中の矢印で示すＸ方向（軸心方向）に往復運動（往復振動）する。 Among them, the electromagnetic part 5 includes a pair of electromagnets 6 that are housed in the front and rear of the casing 1 with a gap S as shown in FIG. 3, and a vibrator that is reciprocally disposed in the gap S between the electromagnets 6. 7. The vibrator 7 includes, for example, a main body 8 extending along the gap direction and a pair of permanent magnets 9 incorporated in the main body 8. As a result, when an alternating voltage is applied to the electromagnet 6 to generate an alternating magnetic field in the iron core 6a of the electromagnet 6, the vibrator 7 repeats repulsion and suction performed by the permanent magnet 8 to cause the central axis of the iron core 6a. Is reciprocating (reciprocating vibration) in the X direction (axial direction) indicated by the arrow in FIG.

ポンプ部１０は、図３に示されるようにいずれもケーシング１の両側のポンプ組付け口１ａを覆うように設けた一対のダイヤフラム１１、同ダイヤフラム１１の前方にそれぞれ形成したポンプ室１２、同ポンプ室１２に設けた吸気弁１３、同じく吐出弁１４、吸入口（図示しない）から吸気弁１３へ吸入空気を導く吸気路１５、吐出弁１４から吐出する空気を吐出口１６へ導く吐出路１７を有して構成される。そして、一対のダイヤフラム１１が、振動子７の両端部にそれぞれ連結してある。この連結により、振動子７をＸ方向に移動自在に保持している。この保持により、振動子７の往復運動（往復振動）がダイヤフラム１１へ伝わり、それぞれポンプ部１０にてポンプ動作が行われる。すなわち、ポンプ室１２の容積が、ダイヤフラム１１の変位により、拡大と縮小を繰り返すので、吸込口（図示しない）から吸い込んだ空気が吐出口１６から吐出される。なお、吸気弁１３、排気弁１４には、いずれも弁体にシート状部材が用いてある。 Pump unit 10, a pair of diaphragm 11 provided so as both to cover the pump assembly inlet 1a on both sides of the casing 1 as shown in FIG. 3, the pump chamber 12 formed respectively in front of the diaphragm 11, the pump An intake valve 13 provided in the chamber 12, similarly a discharge valve 14, an intake passage 15 that guides intake air from an intake port (not shown) to the intake valve 13, and a discharge passage 17 that guides air discharged from the discharge valve 14 to the discharge port 16. It is configured. A pair of diaphragms 11 are connected to both ends of the vibrator 7 respectively. By this connection, the vibrator 7 is held movably in the X direction. By this holding, the reciprocating motion (reciprocating vibration) of the vibrator 7 is transmitted to the diaphragm 11, and the pump operation is performed in each pump unit 10. That is, the volume of the pump chamber 12 repeatedly expands and contracts due to the displacement of the diaphragm 11, so that air sucked from a suction port (not shown) is discharged from the discharge port 16. In addition, both the intake valve 13 and the exhaust valve 14 use a sheet-like member as a valve body.

また図２に示されるように本体３内には、通常時とは異なる振動子７の動きを検出する異常検出装置２０が収められている。この異常検出装置２０には、図４〜図７に示されるように本体３に取付くフレーム２１に、可動部材である回動部材２５と、振動子７の往復運動方向（図３中の振動子７の軸心方向を示すＸ方向が相当）における異常な動きを回動部材２５へ伝える伝達部３０（本願の第１伝達部に相当）と、振動子７の往復運動方向とは直交する方向（図３中の振動子７の軸心方向とは直角な方向を示すＹ方向が相当）における異常な動きを回動部材２５へ伝える伝達部３５（本願の第２伝達部に相当）と、電磁石６の電源回路（図示しない）に介装されるマイクロスイッチ４０（本願の異常検出部に相当）とを組み付けた構造が用いられている。 Further, as shown in FIG. 2, the main body 3 contains an abnormality detection device 20 that detects the movement of the vibrator 7 different from the normal time. As shown in FIGS. 4 to 7, the abnormality detection device 20 includes a frame 21 attached to the main body 3, a rotating member 25 that is a movable member, and a reciprocating direction of the vibrator 7 (vibration in FIG. 3). The transmission part 30 (corresponding to the first transmission part of the present application) that transmits abnormal movement to the rotating member 25 in the X direction indicating the axial direction of the child 7 is orthogonal to the reciprocating direction of the vibrator 7. A transmission unit 35 (corresponding to the second transmission unit of the present application) that transmits an abnormal movement in the direction (corresponding to the Y direction indicating a direction perpendicular to the axial direction of the vibrator 7 in FIG. 3) to the rotating member 25; A structure in which a micro switch 40 (corresponding to the abnormality detection unit of the present application) interposed in a power circuit (not shown) of the electromagnet 6 is assembled is used.

具体的には、フレーム２１は、例えば図６に示されるように一側部にスイッチ設置部２２が形成され、他側部に二股に分かれた一対の支持アーム部２３が形成された部材から構成される。スイッチ設置部２２は、例えば下側が凹み、さらに支持アーム部２３側の一部側壁が開放した凹形部２２ａで形成される。この凹形部２２ａ内に、マイクロスイッチ４０が横向きで収められる。この収容により、マイクロスイッチ４０のオンオフ接点４０ａ（図７〜図９に一部だけ図示）は、スイッチ設置部２２の開放した側壁部分に配置させてある。 Specifically, the frame 21 is composed of a member in which, for example, as shown in FIG. 6, a switch installation portion 22 is formed on one side and a pair of support arm portions 23 are formed on the other side. Is done. The switch installation part 22 is formed of, for example, a recessed part 22a having a recessed part on the lower side and an open part of the side wall on the support arm part 23 side. The microswitch 40 is housed sideways in the concave portion 22a. With this accommodation, the on / off contact 40a of the microswitch 40 (only part of which is shown in FIGS. 7 to 9) is disposed on the open side wall portion of the switch installation portion 22.

また図４に示されるようにスイッチ設置部２２の上部壁（凹形部２２ａの底壁がなす：図７〜図９で一部図示）の上面からマイクロスイッチ４０のオンオフ接点４０ａの前面には、これらを覆うようにＬ形の板ばね部材４１が設けられる。フレーム２１は、このうち上部壁２２ｂを覆う板ばね部分を取付面に用いて、マイクロスイッチ４０と一緒に、カバー２の内面にねじ止めしてある。これにより、オンオフ接点４０ａが、オンオフ接点４０ａの前面に配置される板ばね部分４１ｂの可動でオンオフされる構造にしている。なお、板ばね部分４１ｂには、該オンオフ接点４０ａを操作するための突起部４１ａが形成してある。 Further, as shown in FIG. 4, the upper surface of the upper wall of the switch installation portion 22 ( the bottom wall of the concave portion 22 a is partially shown in FIGS. 7 to 9) is placed on the front surface of the on / off contact 40 a of the microswitch 40. An L-shaped leaf spring member 41 is provided so as to cover them. The frame 21 is screwed to the inner surface of the cover 2 together with the microswitch 40 using a leaf spring portion covering the upper wall 22b as an attachment surface. As a result, the on / off contact 40a is turned on and off by the movement of the leaf spring portion 41b disposed on the front surface of the on / off contact 40a. The leaf spring portion 41b is formed with a protrusion 41a for operating the on / off contact 40a.

支持アーム部２３の各先端部は、このときのフレーム２１の固定により、電磁石６間の隙間Ｓから露出している振動子７の直上の地点で、振動子７の軸心方向に並行に配置される。この支持アーム部２３間には、図６に示されるように回動部材２５が回動自在に組み付く。すなわち、回動部材２５は、例えば支持アーム部２３間を占める細長の横壁部２５ａをもつ。そして、この回動部材２５が、例えば横壁部２５ａの幅方向中央に形成された支持孔２６と、支持孔２６および支持アーム部２３間を相通する支持シャフト２７と、該支持シャフト２７を抜止めするクリップ部材２９とで形成される支持構造により、幅方向中央を支点として、フレーム２１に回動自在に支持させてある。 Each tip of the support arm 23 is arranged in parallel with the axial direction of the vibrator 7 at a point immediately above the vibrator 7 exposed from the gap S between the electromagnets 6 by fixing the frame 21 at this time. Is done. As shown in FIG. 6, a rotating member 25 is rotatably mounted between the support arm portions 23. That is, the rotating member 25 has, for example, an elongated lateral wall portion 25 a that occupies the space between the support arm portions 23. The rotating member 25 includes, for example, a support hole 26 formed in the center in the width direction of the lateral wall portion 25a, a support shaft 27 that communicates between the support hole 26 and the support arm portion 23, and prevents the support shaft 27 from being removed. By the support structure formed by the clip member 29, the frame 21 is rotatably supported with the center in the width direction as a fulcrum.

これにより、回動部材２５の両端部は、振動子７の往復運動方向（Ｘ方向）に向く。と共に回動部材２５の一側部は、振動子７を挟んで該振動子７の往復運動方向とは直交する方向の片側、例えば一対の電磁石６の一方側へ突き出るように配置され、他側部は、それとは反対側、例えば電磁石６の他方側へ突き出るように配置される。また横壁部２５ａのマイクロスイッチ４０側には、突起部４１ａと対応した地点に、スイッチ押部２８が形成されている。スイッチ押部２８は、突起部４１ａに向って突き出ている。そして、先端部に形成された溝部２８ａが突起部４１ａと係脱可能に係合している。 Thereby, both end portions of the rotating member 25 are directed in the reciprocating motion direction (X direction) of the vibrator 7. In addition, one side portion of the rotating member 25 is disposed so as to protrude to one side of the vibrator 7 across the vibrator 7 in a direction perpendicular to the reciprocating direction of the vibrator 7, for example, one side of the pair of electromagnets 6. The part is arranged so as to protrude to the opposite side, for example, the other side of the electromagnet 6. Further, a switch pressing portion 28 is formed on the side of the horizontal wall portion 25a on the micro switch 40 side at a point corresponding to the protruding portion 41a. The switch pressing portion 28 protrudes toward the protruding portion 41a. And the groove part 28a formed in the front-end | tip part is engaged with the projection part 41a so that engagement / disengagement is possible.

この溝部２８ａと突起部４１ａとの組み合わせにより、回動部材２５は、マイクロスイッチ４０をオン状態に保つ通常位置と、マイクロスイッチ４０をオフ状態にする異常位置との２つの位置間で変位可能にしている。具体的には、図７に示されるように回動部材２５の通常位置には、板ばね部材４１の弾性力により溝部２８ａと突起部４１ａとの係合が所定に保たれて、マイクロスイッチ４０のオン状態を維持し続ける位置が用いられる。ここでは、横壁部２５ａが水平姿勢になる位置を通常位置としている。また異常位置は、図８および図９に示されるようにスイッチ押部２８の溝部２８ａが突起部４１ａから外れて、マイクロスイッチ４０がオフ状態に変わる位置が用いられる。ここでは、横壁部２５ａが傾くときを異常位置としている。 By the combination of the groove 28a and the protrusion 41a, the rotating member 25 can be displaced between two positions: a normal position where the microswitch 40 is kept on and an abnormal position where the microswitch 40 is off. ing. Specifically, as shown in FIG. 7, at the normal position of the rotating member 25, the engagement between the groove 28 a and the protrusion 41 a is maintained at a predetermined level by the elastic force of the leaf spring member 41, and the micro switch 40. The position where the ON state is continuously maintained is used. Here, the position where the horizontal wall portion 25a is in the horizontal posture is the normal position. As shown in FIGS. 8 and 9, the abnormal position is a position where the groove 28 a of the switch pressing portion 28 is disengaged from the protrusion 41 a and the micro switch 40 is turned off. Here, the time when the horizontal wall portion 25a is inclined is defined as an abnormal position.

伝達部３０は、図５〜図７に示されるように回動部材２５に対応した振動子７の地点、具体的には電磁石６間から露出した振動子７の上面のうち、横壁部２５ａの直下となる本体８の上面部分に突設されたボス部３１と、該ボス部３１を振動子７の往復運動方向から挟んだ地点である横壁部２５ａの両端部にそれぞれ設けた当接面３２とを組み合わせた構造が用いられている。このうちボス部３１は、対向する横壁部２５ａの中間に向って突き出ている。当接面３２は、いずれも振動子７の往復運動方向の許容値を規定する許容量、ボス部３１から離れた地点に形成されていて、振動子７の往復運動方向（Ｘ方向）の動きが許容値を超えると、ボス部３と突き当たり、回動部材２５を回動させる。 As shown in FIGS. 5 to 7, the transmission unit 30 is provided on the horizontal wall portion 25 a of the top surface of the vibrator 7 exposed from the point of the vibrator 7 corresponding to the rotating member 25, specifically, between the electromagnets 6. A boss portion 31 projecting from the upper surface portion of the main body 8 directly below, and abutment surfaces 32 provided at both ends of the lateral wall portion 25a, which is a point sandwiching the boss portion 31 from the reciprocating motion direction of the vibrator 7, respectively. The structure which combined with is used. Among these, the boss part 31 protrudes toward the middle of the opposing lateral wall part 25a. Each of the contact surfaces 32 is formed at a point away from the boss portion 31 with an allowable amount that defines an allowable value in the reciprocating direction of the vibrator 7, and movement of the vibrator 7 in the reciprocating direction (X direction). Exceeds the allowable value, the boss portion 3 is abutted and the rotating member 25 is rotated.

特に、これらボス部３１、当接面３２には、振動子７の往復運動方向の異常な動きを確実に捉える工夫が施されている。
具体的には、ボス部３１は、図５および図７に示されるような振動子７の往復運動方向にクランク形に細長く延びた形状が用いてある。そして、振動子７の両側に向く中間の一対の角部を当接部３１ａとしている。また可動部材２５として、例えば横壁部２５ａの両端部に、ボス部３１の両側に該ボス部３１を挟み込む一対の縦壁部２５ｂを有する構造を採用する。当接部３１ａから、許容量、離れた縦壁部２５ｂの両端部の地点には、互い違いに、一対の斜面３２ａが形成され、当接面３２としている。すなわち、斜面３２ａは、いずれも縦壁部２５ｂからボス部３１に向かう方向へ斜めに傾斜しながら突き出ている。この傾斜した面が、当接部３１ａの前方を遮る地点まで延びている。これにより、振動子７の往復運動方向の異常な動きで、ボス部３１の当接部３１ａが斜面３２ａに突き当たると、斜面３２ａの傾きにより、回動部材２５には回動変位が誘起される。ここで、斜面３２ａと当接部３１ａが突き当たる地点までの距離より、スイッチ押部２８の先端までの距離は、長く設定されていて、振動子７が許容値を超えて往復運動方向（Ｘ方向）に動くと、回動部材２５が異常位置へ回動変位されるだけでなく、レバー比の差により、スイッチ押部２８を大きく異常位置側へ変位させて、マイクロスイッチ４のオフ動作を行うようにしている。 In particular, the boss portion 31 and the contact surface 32 are devised to reliably capture abnormal movement of the vibrator 7 in the reciprocating direction.
Specifically, the boss portion 31 has a shape that is elongated in a crank shape in the reciprocating direction of the vibrator 7 as shown in FIGS. 5 and 7. A pair of intermediate corners facing both sides of the vibrator 7 is used as the contact portion 31a. Further, as the movable member 25, for example, a structure having a pair of vertical wall portions 25b sandwiching the boss portion 31 on both sides of the boss portion 31 at both ends of the horizontal wall portion 25a is employed. A pair of inclined surfaces 32 a are formed alternately at points on both ends of the vertical wall portion 25 b that is an allowable amount away from the contact portion 31 a, and serve as the contact surface 32. That is, the inclined surfaces 32a protrude while being inclined obliquely in the direction from the vertical wall portion 25b to the boss portion 31. This inclined surface extends to a point blocking the front of the contact portion 31a. Accordingly, when the contact portion 31a of the boss portion 31 abuts on the inclined surface 32a due to an abnormal movement in the reciprocating direction of the vibrator 7, a rotational displacement is induced in the rotating member 25 due to the inclination of the inclined surface 32a. . Here, the distance to the tip of the switch pressing portion 28 is set longer than the distance to the point where the inclined surface 32a and the contact portion 31a abut, and the reciprocating motion direction (X direction) of the vibrator 7 exceeds the allowable value. ), The rotating member 25 is not only rotated and displaced to the abnormal position, but the switch pusher 28 is largely displaced to the abnormal position side due to the difference in lever ratio, and the micro switch 4 is turned off. I am doing so.

伝達部３５には、図５〜図７に示されるようにボス部３1のうち、細長く延びた細長部分３１ｂを当接部として用いる構造が採用されている。すなわち、回動部材２５のうち、ボス部３１を振動子７の往復運動方向と直交する方向から挟む地点となる両側部には、一対の当接面３６が設けられている。当接面３６は、いずれも振動子７の往復運動方向とは直交する方向の許容値を規定する許容量、ボス部３１から離れた地点に形成されている。これにより、振動子７の往復運動方向とは直交する方向（Ｙ方向）の動きが許容値を超えると、ボス部３１が当接面３６と突き当たり、回動部材２５を回動させる。 As shown in FIG. 5 to FIG. 7, the transmission portion 35 employs a structure in which an elongated portion 31 b that is elongated in the boss portion 31 is used as a contact portion. That is, a pair of contact surfaces 36 are provided on both sides of the rotating member 25 that are points where the boss 31 is sandwiched from a direction orthogonal to the reciprocating direction of the vibrator 7. Each of the contact surfaces 36 is formed at a point away from the boss portion 31 with an allowable amount that defines an allowable value in a direction orthogonal to the reciprocating direction of the vibrator 7. As a result, when the movement of the vibrator 7 in the direction orthogonal to the reciprocating direction (Y direction) exceeds the allowable value, the boss portion 31 abuts against the contact surface 36 and rotates the rotating member 25.

特に当接面３６には、振動子７の往復運動方向には異常がなく、往復運動方向と直交する方向に異常に動くという状況でも、確実に異常な動きだけを捉える工夫が施されている。具体的には、当接面３６としては、図５〜図７に示されるように縦壁部２５ｂの内面に、斜面３２ａから反対側の端まで連続した一対の壁面３６ａを形成した構造が用いられる。壁面３６ａは，最も近くに配置される細長部分３１ｂ（ボス部３１）の側部分と平行な面、具体的には振動子７の軸方向に延びる細長部分３１ｂの側面と向き合う縦面で形成される。これにより、ボス部３１の細長部分３１ｂと回動部材２５の壁面３６ａとの両者は、通常時の振動子７の往復運動の範囲では、許容値を規定する許容量の隙間を挟んで向き合う構造にしている。 In particular, the contact surface 36 is devised to ensure that only the abnormal movement is detected even in a situation in which there is no abnormality in the reciprocating direction of the vibrator 7 and it moves abnormally in a direction perpendicular to the reciprocating direction. . Specifically, as the contact surface 36, a structure in which a pair of wall surfaces 36a continuous from the inclined surface 32a to the opposite end is formed on the inner surface of the vertical wall portion 25b as shown in FIGS. It is done. The wall surface 36a is formed by a surface parallel to a side portion of the elongated portion 31b (boss portion 31) disposed closest to the wall surface, specifically, a vertical surface facing a side surface of the elongated portion 31b extending in the axial direction of the vibrator 7. The Thereby, both the elongated portion 31b of the boss portion 31 and the wall surface 36a of the rotating member 25 face each other with a clearance of an allowable amount that defines an allowable value in the range of the reciprocating motion of the vibrator 7 at the normal time. I have to.

これで、振動子７が、許容値を超えて往復運動方向と直角な方向（Ｙ方向）だけ偏りながら動くときでも、ボス部３１と壁面３６ａとを用いて、マイクロスイッチ４０がオフ動作されるようにしている。
一方、図２および図４に示されるように回動部材２５の横壁部２５ａの上部には、手動操作用のノブ部４５（本願の操作部に相当）が設けられている。ノブ部４５は、図４および図７に示されるようにカバー２に形成した細長の通孔２ａを通じて、本体３の上方へ突き出ている。通孔孔２ａは、通常時のときのノブ部４５の位置〜異常時のときのノブ部４５の位置までの動きを許容する長孔で形成されている。これにより、振動子７が許容値を異常な動きをすると、ノブ部４５が、中央の通常時を示す地点Ｘ１から、同地点Ｘ１の左右に有る異常時を示す地点Ｘ２まで変位する構造にしてある。同構造により、目視からでも異常が認識されるようにしている。と共に、異常の検出後、地点Ｘ２に変位したノブ部４５を手動操作で、地点Ｘ１まで戻すと、回動部材２５が元の通常位置へ復帰されるようにしている。もちろん、回動部材２５の戻りにより、再びマイクロスイッチ４０が通常状態（オン状態）に復帰される構造ともなっている。 Thus, even when the vibrator 7 moves while deviating only in a direction (Y direction) perpendicular to the reciprocating direction exceeding the allowable value, the micro switch 40 is turned off using the boss portion 31 and the wall surface 36a. I am doing so.
On the other hand, as shown in FIGS. 2 and 4, a manual operation knob 45 (corresponding to the operation unit of the present application) is provided on the upper portion of the lateral wall 25 a of the rotating member 25. As shown in FIGS. 4 and 7, the knob portion 45 projects upward from the main body 3 through an elongated through hole 2 a formed in the cover 2. The through-hole 2a is formed as a long hole that allows movement from the position of the knob part 45 at the normal time to the position of the knob part 45 at the time of abnormality. Accordingly, when the vibrator 7 moves abnormally within the allowable value, the knob portion 45 is displaced from the central point X1 indicating normal time to the point X2 indicating the abnormal time on the left and right of the same point X1. is there. With this structure, abnormalities can be recognized visually. At the same time, after the abnormality is detected, when the knob 45 displaced to the point X2 is manually returned to the point X1, the rotating member 25 is returned to the original normal position. Of course, the microswitch 40 is again returned to the normal state (on state) when the rotating member 25 returns.

こうした構造により、ボス部３１を除く異常信号検出側を１つのユニットとしている。
つぎに、このように構成された電磁式ダイヤフラムポンプの作用について説明する。
すなわち、電磁石６に交流電圧を印加すると、電磁石６の鉄心６ａに交番磁界が発生して、振動子７の永久磁石９を反発させたり吸引させたりする。すると、振動子７は、電磁石６の鉄心６ａの中心軸を振幅の中心として、振動子７の軸心方向に往復運動（往復振動）する。この振動子７の往復運動がそれぞれ両側のダイヤフラム１１に伝わり、ポンプ室１２の容積を変化させ、吸込口（図示しない）から吸い込んだ空気を吐出口１６から吐出させる。 With this structure, the abnormal signal detection side excluding the boss portion 31 is a single unit.
Next, the operation of the electromagnetic diaphragm pump configured as described above will be described.
That is, when an AC voltage is applied to the electromagnet 6, an alternating magnetic field is generated in the iron core 6 a of the electromagnet 6 to repel or attract the permanent magnet 9 of the vibrator 7. Then, the vibrator 7 reciprocates (reciprocates) in the axial direction of the vibrator 7 with the center axis of the iron core 6a of the electromagnet 6 as the center of amplitude. The reciprocating motion of the vibrator 7 is transmitted to the diaphragms 11 on both sides, the volume of the pump chamber 12 is changed, and the air sucked from the suction port (not shown) is discharged from the discharge port 16.

このとき、振動子７の動きに異常がなければ、図７に示されるようにボス部３１は、斜面３２ａや壁面３６ａに触れずに、回動部材２５内を往復運動する。これにより、回動部材２５は、通常位置に保たれ、マイクロスイッチ４０はオン状態に保ち続けられる。
このとき、例えばダイヤフラム１１や吸気弁１３や排気弁１４の弁体の経年劣化により、振動子７が、通常時とは異なる動きになったとする。例えば振動子７が、定められている許容値を超えて、往復運動方向（Ｘ方向）へ偏るという動きが生じたとする。 If there is no abnormality in the movement of the vibrator 7 at this time, as shown in FIG. 7, the boss 31 reciprocates within the rotating member 25 without touching the inclined surface 32a or the wall surface 36a. As a result, the rotating member 25 is kept at the normal position, and the microswitch 40 is kept on.
At this time, for example, it is assumed that the vibrator 7 moves differently from the normal time due to aging deterioration of the valve body of the diaphragm 11, the intake valve 13, and the exhaust valve 14, for example. For example, it is assumed that the vibrator 7 moves beyond the predetermined allowable value and is biased in the reciprocating motion direction (X direction).

このとき、ボス部３１は、軸心方向の一方へ偏りながら往復運動するから、図８に示されるようにボス部３１の当接部３１ａが、偏る方向の端部に有る斜面３２ａと突き当たるという挙動が生じる。ここで、斜面３２ａは、ボス部３１が往復動する方向に対して傾斜しているから、図８（ａ）のように当接部３１ａが突き当たると、図８（ｂ）のように回動部材２５の片側を上方へ押し上げるという挙動をもたらす。つまり、回動部材２５は、支持シャフト２７を支点に回動変位する。このときスイッチ押部２８の先端までの距離は、斜面３２ａと当接部３１ａとが当接している地点までの距離より長いから、スイッチ押部２８の先端部が、レバー比により、大きく振られる。このスイッチ押部２８の動きにより、マイクロスイッチ４０の突起部４１ａとの係合が外れる。これにより、マイクロスイッチ４０は、オンからオフに切り換わり、異常を検出する。このオフ動作により、電磁石６の電源が断たれ、振動子７の異常な動き、すなわち周辺に配置されている電磁石６やその他の部品と接触しながら不規則に動作する振動子６を直ちに止めさせる。 At this time, since the boss portion 31 reciprocates while being biased toward one side in the axial direction, the abutting portion 31a of the boss portion 31 abuts against the inclined surface 32a at the end portion in the biasing direction as shown in FIG. Behavior occurs. Here, since the inclined surface 32a is inclined with respect to the direction in which the boss portion 31 reciprocates, when the contact portion 31a hits as shown in FIG. 8A, the inclined surface 32a rotates as shown in FIG. 8B. This brings about the behavior of pushing up one side of the member 25 upward. That is, the rotation member 25 is rotationally displaced with the support shaft 27 as a fulcrum. At this time, since the distance to the tip of the switch pressing portion 28 is longer than the distance to the point where the slope 32a and the contact portion 31a are in contact, the tip portion of the switch pressing portion 28 is greatly shaken by the lever ratio. . Due to the movement of the switch pressing portion 28, the engagement with the projection 41 a of the micro switch 40 is released. As a result, the microswitch 40 switches from on to off and detects an abnormality. By this off operation, the power supply of the electromagnet 6 is cut off, and the abnormal movement of the vibrator 7, that is, the vibrator 6 that operates irregularly while being in contact with the electromagnet 6 and other parts arranged in the vicinity is immediately stopped. .

一方、例えばダイヤフラム１１や吸気弁１３や排気弁１４の弁体の経年劣化などにより、振動子７が、往復運動方向は許容値を超えず、往復運動方向と直交する方向（Ｙ方向）で偏りながら往復運動するという、特異な挙動が生じたとする。
このときには、ボス部３１は、振動子７の往復運動方向と直角な方向の一方へ偏りながら往復運動するから、図９（ａ）に示されるようにボス部３１の細長部分３１ｂが、回動部材２５のうち、偏る方向に有る壁面３６ａと突き当たる挙動が生じる。すると、図９（ｂ）に示されるように回動部材２５は、支持シャフト２７を支点に回動変位され、上記同様にスイッチ押部２８を回動変位させる。これにより、マイクロスイッチ４０の突起部４１ａとの係合が外れる。これで、マイクロスイッチ４０は、オンからオフに切り換わり、上記Ｘ方向の異常のときと同様、Ｙ方向の異常を検出する。このオフ動作により、電磁石６の電源が断たれ、同様に振動子７の異常な動き、すなわち周辺に配置されている電磁石６やその他の部品と接触しながら不規則に動作する振動子６を直ちに止めさせる。 On the other hand, for example, due to aging deterioration of the valve body of the diaphragm 11, the intake valve 13, and the exhaust valve 14, the vibrator 7 does not exceed the allowable value in the reciprocating motion direction, and is biased in the direction orthogonal to the reciprocating motion direction (Y direction). Suppose that a unique behavior of reciprocating motion occurs.
At this time, since the boss portion 31 reciprocates while being biased in one direction perpendicular to the reciprocating direction of the vibrator 7, the elongated portion 31b of the boss portion 31 is rotated as shown in FIG. In the member 25, a behavior that abuts against a wall surface 36 a in a biased direction occurs. Then, as shown in FIG. 9B, the rotation member 25 is rotationally displaced about the support shaft 27 as a fulcrum, and the switch pressing portion 28 is rotationally displaced as described above. Thereby, the engagement with the protrusion 41a of the microswitch 40 is released. Thus, the micro switch 40 switches from on to off, and detects the abnormality in the Y direction as in the case of the abnormality in the X direction. By this off operation, the power supply of the electromagnet 6 is cut off, and similarly, the abnormal movement of the vibrator 7, that is, the vibrator 6 that operates irregularly while in contact with the electromagnet 6 and other parts arranged in the vicinity is immediately Stop it.

このように異なる振動子７の異常な動きを、共通の回動部材２５を通じ、共通なマイクロスイッチ４０へ伝える異常検出装置２０は、部品点数を多用する、２種類の検出装置を用いずにすむ。
したがって、部品点数を抑えた簡素な構造で、振動子７の往復運動方向（Ｘ方向）の異常な動きと、振動子７の往復運動方向とは直交する方向（Ｙ方向）の異常な動きとの双方を検出することができる。 Thus, the abnormality detection device 20 that transmits the abnormal movement of the different vibrators 7 to the common micro switch 40 through the common rotating member 25 does not use two types of detection devices that use many parts. .
Therefore, with a simple structure with a reduced number of parts, the abnormal movement in the reciprocating motion direction (X direction) of the vibrator 7 and the abnormal movement in the direction orthogonal to the reciprocating motion direction of the vibrator 7 (Y direction) Both of them can be detected.

しかも、異常検出装置２０は、異なる動き（Ｘ方向、Ｙ方向）を、振動子７に設けたボス部３１および回動部材２５に設けた当接面３２，３６を通じ、回動部材２５へ伝える構造にすると、回動部材２５の周辺に各部を設けるだけですみ、一層、簡単な構造ですむ。特に振動子７の往復運動方向（Ｘ方向）の異常な動きを受ける当接面３２には、斜面３２ａを採用し、振動子７の往復運動方向とは直角な方向（Ｙ方向）の異常な動きを受ける当接面３６には、斜面３２ａから他の端まで連続する壁面３６ａを採用すると、どのような状況でも振動子７の往復運動方向とは直交する方向の異常には対応できる。このため、振動子７の往復運動方向と直交する向きの異常な動きの検出は確実である。 Moreover, the abnormality detection apparatus 20 transmits different movements (X direction and Y direction) to the rotating member 25 through the boss portion 31 provided on the vibrator 7 and the contact surfaces 32 and 36 provided on the rotating member 25. With the structure, it is only necessary to provide each part around the rotating member 25, and the structure can be further simplified. In particular, the contact surface 32 that receives an abnormal movement in the reciprocating motion direction (X direction) of the vibrator 7 employs an inclined surface 32a and is abnormal in a direction perpendicular to the reciprocating motion direction of the vibrator 7 (Y direction). If a wall surface 36a that continues from the inclined surface 32a to the other end is adopted as the contact surface 36 that receives the movement, it is possible to cope with an abnormality in a direction orthogonal to the reciprocating direction of the vibrator 7 in any situation. For this reason, the abnormal movement in the direction orthogonal to the reciprocating direction of the vibrator 7 is surely detected.

また回動部材２５に復帰用のノブ部４５を設けたことにより、通常状態への復帰が容易となる。すなわち、復帰異常の検出後は、異常検出の作動原因を取り除く作業、例えばダイヤフラム１１や吸気弁１３や排気弁１４の弁体を交換して正常な運転が行える状態にしてから、手動操作により、ノブ部４５を通常位置に復帰させさえすれば、回動部材２５およびマイクロスイッチ４０は、通常時に戻るから、検出部品の交換や修理を必要とせずに、容易に通常状態に復帰させることができる。 Further, the return member 45 is provided on the rotating member 25, so that it is easy to return to the normal state. That is, after the detection of the return abnormality, the operation for removing the cause of the abnormality detection, for example, by replacing the valve body of the diaphragm 11, the intake valve 13 and the exhaust valve 14 to be able to perform normal operation, As long as the knob 45 is returned to the normal position, the rotating member 25 and the microswitch 40 return to the normal state, and therefore can easily be returned to the normal state without requiring replacement or repair of the detection components. .

なお、本発明は上述した一実施形態に限定されるものではなく、本発明の主旨を逸脱し
ない範囲内で種々可変して実施しても構わない。例えば一実施形態では、クランク形状のボス部を用いたが、これに限らず、他の形状でも、また複数の部品を組み合わせたボス構造でもよい。 Note that the present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention. For example, in the embodiment, the crank-shaped boss portion is used. However, the present invention is not limited to this, and a boss structure in which a plurality of parts are combined may be used.

本発明の一実施形態に係る電磁式ダイヤフラムポンプの概観を示す斜視図。1 is a perspective view showing an overview of an electromagnetic diaphragm pump according to an embodiment of the present invention. 図１中のカバーを取り外した状態を示す斜視図。The perspective view which shows the state which removed the cover in FIG. 図２中のＡ−Ａ線に沿う平断面図。FIG. 3 is a plan sectional view taken along line AA in FIG. 2. 図２中のＢ矢視から見た図。The figure seen from the B arrow in FIG. 異常検出装置の構造を示す斜視図。The perspective view which shows the structure of an abnormality detection apparatus. 同異常検出装置の主要部分を分解した斜視図。The perspective view which decomposed | disassembled the principal part of the abnormality detection apparatus. 通常時の異常検出装置の状態を説明する図。The figure explaining the state of the abnormality detection apparatus at the normal time. 振動子の往復運動方向（Ｘ方向）で異常な動きを検出するときを説明する図。The figure explaining when detecting an abnormal motion in the reciprocating motion direction (X direction) of a vibrator. 振動子の往復運動方向と直角な方向（Ｙ方向）で異常な動きを検出するときを説明する図。The figure explaining when detecting abnormal motion in the direction (Y direction) perpendicular to the reciprocating motion direction of a vibrator.

Explanation of symbols

５電磁部
６電磁石
７振動子
１０ポンプ部
１１ダイヤフラム
２０異常検出装置
２５回動部材（可動部材）
３０伝達部（第１伝達部）
３１ボス部
３２ａ斜面（第１当接面）
３５伝達部（第２伝達部）
３６ａ壁面（第２当接面）
４０マイクロスイッチ（異常検出部）
４５ノブ部（操作部） DESCRIPTION OF SYMBOLS 5 Electromagnetic part 6 Electromagnet 7 Vibrator 10 Pump part 11 Diaphragm 20 Abnormality detection apparatus 25 Rotating member (movable member)
30 Transmitter (first transmitter)
31 Boss part 32a slope (1st contact surface)
35 Transmitter (Second Transmitter)
36a wall surface (second contact surface)
40 Micro switch (Abnormality detection unit)
45 Knob section (operation section)

Claims

An alternating magnetic field is generated in a pair of electromagnets, and an electromagnetic part is reciprocated between the electromagnets, and a diaphragm is connected to the vibrator, and the diaphragm is moved according to the reciprocating motion of the vibrator. A pump unit that performs a suction / exhaust operation by being displaced, and an abnormality detection device that detects an abnormal movement exceeding the allowable value of the vibrator different from the normal time,
The abnormality detection device is:
A movable member that is displaceable between two positions, a normal position and an abnormal position;
A first transmission unit configured to transmit an abnormal displacement of the vibrator to the movable member when the movement of the vibrator in the reciprocating direction exceeds an allowable value, and to displace the movable member from the normal position to the abnormal position;
When the movement of the vibrator in the direction orthogonal to the reciprocating direction exceeds an allowable value, a second transmission for transmitting the abnormal displacement of the vibrator to the movable member and displacing the movable member from the normal position to the abnormal position. And
Possess an abnormality signal output unit abnormality signal is output in accordance with said movable member is displaced in the abnormal position,
The movable member is disposed between the pair of electromagnets so as to face the vibrator, both end portions thereof are directed in a reciprocating direction of the vibrator, and one side portion is a reciprocating movement of the vibrator with the vibrator interposed therebetween. It extends to one side in a direction perpendicular to the direction, the other side extends to the opposite side, and is supported so as to be rotatable about both sides as a fulcrum, and a predetermined fixed position is set as a normal position and deviated from the fixed position. A rotating member having a rotating position set as an abnormal position;
The first transmission portion includes a boss portion projecting from the vibrator toward the middle of the opposed rotating member, and a reciprocating motion direction of the vibrator from the boss portion at both ends of the rotating member. When the movement of the vibrator in the reciprocating direction exceeds the allowable value, the boss portion is abutted and the rotating member is moved from the normal position to the abnormal position. A first abutting surface for rotational displacement,
The second transmission portion is provided on both sides of the rotating member, separated from the boss portion by an allowable amount that defines an allowable value in a direction orthogonal to the reciprocating direction of the vibrator, and the vibrator When the movement in the direction orthogonal to the reciprocating motion direction exceeds a permissible value, it has a second contact surface that abuts against the boss portion and causes the rotational member to be rotationally displaced from the normal position to the abnormal position.
Electromagnetic diaphragm pump according to claim and this.

The first contact surfaces are alternately provided at both end portions of the rotating member, and are formed of slopes that induce rotational displacement in the rotating member as they abut against the boss portion.
The second contact surface is continuously formed on both sides of the rotating member from the inclined surface to the opposite end without the inclined surface, and is rotated and displaced by the rotating member as it abuts on the boss portion. 2. The electromagnetic diaphragm pump according to claim 1 , wherein the electromagnetic diaphragm pump is formed of a wall surface that induces turbidity.

The movable member has an operation unit for manually returning the movable member displaced to the abnormal position to the normal position,
The abnormal signal output unit, when the movable member is returned to the normal position by the manual operation, the electromagnetic according to claim 1 or claim 2, characterized in that a microphone switch for returning to a normal state Type diaphragm pump.