JP4226427B2 - Diaphragm pump device - Google Patents

Diaphragm pump device Download PDF

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Publication number
JP4226427B2
JP4226427B2 JP2003336725A JP2003336725A JP4226427B2 JP 4226427 B2 JP4226427 B2 JP 4226427B2 JP 2003336725 A JP2003336725 A JP 2003336725A JP 2003336725 A JP2003336725 A JP 2003336725A JP 4226427 B2 JP4226427 B2 JP 4226427B2
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Japan
Prior art keywords
diaphragm
cover member
pump device
diaphragm pump
screw
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JP2005105850A (en
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一人 澤田
光則 柳
浩 森下
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Kyosan Denki Co Ltd
Denso Corp
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Kyosan Denki Co Ltd
Denso Corp
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Priority to JP2003336725A priority Critical patent/JP4226427B2/en
Priority to DE102004047011A priority patent/DE102004047011A1/en
Priority to CNB2004100831961A priority patent/CN100510378C/en
Publication of JP2005105850A publication Critical patent/JP2005105850A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Description

本願発明は、ダイヤフラムポンプ装置、特に自動車等のディーゼルエンジンの燃料フィルタに設けられるダイヤフラムポンプ装置に関する。   The present invention relates to a diaphragm pump device, and more particularly to a diaphragm pump device provided in a fuel filter of a diesel engine such as an automobile.

自動車等のエンジンとして古くからディーゼルエンジンがある。ディーゼルエンジンは、燃料として軽油を使用し、その軽油を噴射ポンプで高圧に圧縮し、インジェクタからエンジンの燃焼室に噴射させ、燃焼室で自己燃焼させるものである。   There is a diesel engine as an engine for automobiles for a long time. A diesel engine uses light oil as fuel, compresses the light oil to a high pressure with an injection pump, injects it from an injector into a combustion chamber of the engine, and self-combusts in the combustion chamber.

その燃料系統を図１７に示す。燃料系統は、主として噴射ポンプ１、コモンレール２、インジェクタ３、燃料タンク４、ディーゼルフィルタ５等からなる。噴射ポンプ１は、高圧の燃料を供給するポンプであり、該噴射ポンプ１で作られる高圧燃料はコモンレール２をより各気筒のインジェクタ３に分配される。黒塗りの矢印は、燃料タンク４からインジェクタ３への燃料の流れを示し、白抜きの矢印は、インジェクタ３から燃料タンク４への戻り燃料の流れを示す。   The fuel system is shown in FIG. The fuel system mainly includes an injection pump 1, a common rail 2, an injector 3, a fuel tank 4, a diesel filter 5, and the like. The injection pump 1 is a pump that supplies high-pressure fuel, and the high-pressure fuel produced by the injection pump 1 is distributed to the injectors 3 of each cylinder by way of the common rail 2. The black arrow indicates the flow of fuel from the fuel tank 4 to the injector 3, and the white arrow indicates the flow of return fuel from the injector 3 to the fuel tank 4.

燃料中には、塵芥、錆等の固形夾雑物、カーボン、ガム状物質のようなスラッジ及び水分等の異物が混入しておりこの異物を取り除くため前記ディーゼルフィルタ５が設けられている。ディーゼルフィルタ５で分離された異物は、一定以上溜まると底部に設けられるドレンコックが開かれ排出されることになるが、ただドレンコックが開かれただけでは排出が良好に行われない。また、燃料系統中に空気が混入すると燃料の送給に支障が生じる。このような弊害をなくすため従来ディーゼルフィルタ５には、ディーゼルフィルタ５内の分離水を良好に排出したり、或いは燃料系統中の混入空気を排出するために手動式のダイヤフラムポンプ装置６が設けられている。   In the fuel, foreign matters such as dust, rust and other foreign matters, sludge such as carbon and gum, and moisture are mixed, and the diesel filter 5 is provided to remove the foreign matter. When the foreign matter separated by the diesel filter 5 accumulates above a certain level, the drain cock provided at the bottom is opened and discharged. However, the drain cock cannot be discharged well just by opening the drain cock. In addition, if air enters the fuel system, the fuel supply will be hindered. In order to eliminate such an adverse effect, the conventional diesel filter 5 is provided with a manual diaphragm pump device 6 for discharging the separated water in the diesel filter 5 well or discharging mixed air in the fuel system. ing.

図１８に従来の手動式のダイヤフラムポンプ装置６を有するディーゼルフィルタ５を示す。ディーゼルフィルタ５の上部には、手動式のダイヤフラムポンプ装置６が配設される。このダイヤフラムポンプ装置６は、外郭を形成するボデー７を有し、流体流入通路９及び流体流出通路１０が連結され、その内部にはポンプ室８が形成される。   FIG. 18 shows a diesel filter 5 having a conventional manual diaphragm pump device 6. A manual diaphragm pump device 6 is disposed above the diesel filter 5. The diaphragm pump device 6 has a body 7 that forms an outer shell, and a fluid inflow passage 9 and a fluid outflow passage 10 are connected to each other, and a pump chamber 8 is formed therein.

ボデー７の上端にはダイヤフラム１１が設けられるとともに、その上方部に設けられるカバー部材１２を前記ボデー７の上端外周部にかしめ固定することによりダイヤフラム１１はボデー７とカバー部材１２とにより強固に狭持される。前記カバー部材１２には、前記ダイヤフラム１１に固定される手動操作部としてのノブ１４が上下動可能に取り付けられ、その内部に大気室１３が形成される。   A diaphragm 11 is provided at the upper end of the body 7, and a cover member 12 provided at an upper portion thereof is caulked and fixed to the outer periphery of the upper end of the body 7, whereby the diaphragm 11 is tightly narrowed by the body 7 and the cover member 12. Be held. A knob 14 as a manual operation unit fixed to the diaphragm 11 is attached to the cover member 12 so as to be movable up and down, and an air chamber 13 is formed therein.

また、前記ボデー７内のポンプ室８には、弁部材１５及び前記ポンプ室８を拡大方向へ付勢するスプリング１６が設けられており、通常時には黒塗り矢印(1)〜(4)の経路で燃料がディーゼルフィルタ５に流れ、ディーゼルフィルタ５により異物が除去され、黒塗り矢印(5)で示すように流体流出通路１０から送出される。そして、ディーゼルフィルタ５内の分離水を排出したり、或いは燃料系統中の混入空気を排出する際には、前記ノブ１４を押圧し前記ダイヤフラムを上下動させることによって行う。   Further, the pump chamber 8 in the body 7 is provided with a valve member 15 and a spring 16 for urging the pump chamber 8 in the expansion direction, and the path of the black arrows (1) to (4) is normally provided. Then, the fuel flows into the diesel filter 5, foreign matter is removed by the diesel filter 5, and the fuel is sent out from the fluid outflow passage 10 as indicated by the black arrow (5). When the separated water in the diesel filter 5 is discharged or the mixed air in the fuel system is discharged, the knob 14 is pressed and the diaphragm is moved up and down.

従来のダイヤフラム１１を狭持するボデー７とカバー部材１２とのかしめ固定について説明すると、前記カバー部材１２の外周先端部１７は、図で点線Ａとして示すように折り曲げられていない筒形状のものとして予め形成されており、そのカバー部材１２をボデー７の上端部に被せ、その後、かしめ装置１８のローラ１８ａをカバー部材１２の外周先端部１７の側面に当て、かしめ装置１８を白抜き矢印(6)で示す方向に押し込むとともに、ダイヤフラムポンプ装置６を矢印(7)で示す方向に回動することによって行われる。すると、カバー部材１２の外周先端部１７は、点線Ａで示す位置から実線Ｂで示す位置に折り曲げられ、その結果、ダイヤフラム１１はボデー７とカバー部材１２とにより強固に狭持される。   The caulking and fixing between the body 7 and the cover member 12 that sandwich the conventional diaphragm 11 will be described. The outer peripheral tip portion 17 of the cover member 12 has a cylindrical shape that is not bent as shown by a dotted line A in the figure. The cover member 12 is formed in advance, and the upper end portion of the body 7 is covered. After that, the roller 18a of the caulking device 18 is applied to the side surface of the outer peripheral end portion 17 of the cover member 12, and the caulking device 18 is moved to the white arrow (6 ) And pushing the diaphragm pump device 6 in the direction indicated by the arrow (7). Then, the outer peripheral tip 17 of the cover member 12 is bent from the position indicated by the dotted line A to the position indicated by the solid line B. As a result, the diaphragm 11 is firmly held between the body 7 and the cover member 12.

ところが、従来のボデー７とカバー部材１２とのかしめ固定は、かしめ部をかしめ装置１８のローラ１８ａで押圧しながらダイヤフラムポンプ装置６を矢印(7)で示す方向に回動しながら行うため、例えば図に示すようにボデー７に取り付けられる流体流出通路１０等のような部品がかしめ装置１８の高さと同じような位置にあると、ダイヤフラムポンプ装置６を矢印(7)で示す方向に回動した場合、かしめ装置１８に流体流出通路１０が当たりかしめ加工が行われなくなるため、かしめ加工時に障害となる部品はかしめ加工の後に取り付けざるを得なくなり、それだけ組み立て順序が制約され設計の自由度が減少することとなる。   However, the conventional caulking and fixing of the body 7 and the cover member 12 are performed while the caulking portion is pressed by the roller 18a of the caulking device 18 and the diaphragm pump device 6 is rotated in the direction indicated by the arrow (7). As shown in the figure, when a component such as the fluid outflow passage 10 attached to the body 7 is at a position similar to the height of the caulking device 18, the diaphragm pump device 6 is rotated in the direction indicated by the arrow (7). In this case, since the fluid outflow passage 10 does not contact the caulking device 18 and the caulking process is not performed, the parts that are obstructed during the caulking process must be attached after the caulking process, and the assembly order is limited accordingly, and the degree of freedom of design is reduced. Will be.

また、近年、廃車する場合は、樹脂、金属、ゴム等の材料に分別してリサイクルまたは廃棄する方向であるが、かしめ等の強固な固定手段では分解が困難であり、材料の分別を行いがたいという制約を有していた。   Also, in recent years, when disposing of cars, it is in the direction of separating or recycling or discarding them into materials such as resin, metal, rubber, etc., but it is difficult to disassemble with strong fixing means such as caulking, and it is difficult to separate materials It had the restrictions.

このような弊害をなくする手段として、ボデー７とカバー部材１２とをネジ締結手段というより簡単な固定手段を採用することが考えられる。   As a means for eliminating such an adverse effect, it is conceivable to adopt a simple fixing means called the screw fastening means for the body 7 and the cover member 12.

しかしながら、カバー部材１２は樹脂製で、ダイヤフラム１１はゴム製であるためカバー部材１２を回転させて締め付ける際、ダイヤフラム１１の連れ回りが生じ、ダイヤフラム１１の摩滅、或いは組み付け不具合が発生したり、また、単なるネジ締結であると一般ユーザーがカバー部材１２を簡単に取り外すことができるため単なる興味本位や、或いは故意にしろカバー部材１２が取り外されるとその後の締め付けが不適正であったり或いはダイヤフラム１１等の部品が損傷したりする等の不具合が発生する恐れがあった。
特開平９−１３３０５９号公報 However, since the cover member 12 is made of resin and the diaphragm 11 is made of rubber, when the cover member 12 is rotated and tightened, the diaphragm 11 is rotated, resulting in wear of the diaphragm 11 or assembly failure. Since the general user can easily remove the cover member 12 when the screw is simply tightened, it is simply interesting, or if the cover member 12 is intentionally removed, the subsequent tightening may be inappropriate or the diaphragm 11 or the like. There is a risk of malfunction such as damage to the parts.
JP-A-9-133059

本願発明の目的は、ボデーとカバー部材とをネジ締結により固定してもダイヤフラムの連れ回りがなく、更に簡単にカバー部材を取り外すことのできないダイヤフラムポンプ装置を提供することである。   An object of the present invention is to provide a diaphragm pump device in which the diaphragm does not rotate even if the body and the cover member are fixed by screw fastening, and the cover member cannot be easily removed.

上記目的を達成するため、本願発明は、以下のような構成を採用してなる。   In order to achieve the above object, the present invention employs the following configuration.

請求項１に係る発明においては、外郭を形成し一端に開口部を有するボデーと、前記ボデーの開口部を閉塞し前記ボデー内にポンプ室を形成するダイヤフラムと、前記ダイヤフラムを挟んで前記ボデーと反対側に設けられ内部に大気室を形成するカバー部材と、前記ダイヤフラムを弾性変形させる手動操作部と、前記ポンプ室に連通する流体流入通路及び流体流出通路と、前記流体流入通路及び流体流出通路を開閉する弁部材と、前記ポンプ室を拡大方向へ付勢するスプリングとを備え、前記ボデーと前記カバー部材とをネジ締結することにより前記ダイヤフラムを狭持するダイヤフラムポンプ装置であって、前記ボデーと前記カバー部材とによる前記ダイヤフラムの狭持箇所に連れ回り防止部材を介在させ、前記ボデーと前記カバー部材との締結時に前記ダイヤフラムの連れ回りを防止し、前記連れ回り防止部材に、シール確認用連通路を設ける構成。そしてこのような構成により、ボデーとカバー部材との固定が簡単になり、且つ固定時にダイヤフラムの連れ回りがなくなる。更に、ダイヤフラムの狭持時にシールの誤判定がなくなる。
In the invention according to claim 1 , a body having a shell and having an opening at one end, a diaphragm that closes the opening of the body and forms a pump chamber in the body, and the body sandwiching the diaphragm, A cover member which is provided on the opposite side and forms an atmospheric chamber therein, a manual operation portion for elastically deforming the diaphragm, a fluid inflow passage and a fluid outflow passage communicating with the pump chamber, and the fluid inflow passage and the fluid outflow passage A diaphragm pump device that includes a valve member that opens and closes the pump chamber and a spring that urges the pump chamber in an expansion direction, and that clamps the diaphragm by screwing the body and the cover member. And a cover preventing member interposed between the diaphragm and the cover member, the body and the cover member The co-rotation of the diaphragm is prevented during the fastening, the Child about preventing member, provided a seal for confirming communication passage configuration. With such a configuration, the body and the cover member can be easily fixed, and the diaphragm is not rotated at the time of fixing. Further, there is no erroneous seal determination when the diaphragm is held.

請求項２に係る発明においては、前記連通路は、前記連れ回り防止部材の板厚部分に設ける通し孔である構成。そしてこのような構成により、請求項１に係る発明の作用に加え、ダイヤフラムの狭持時に連通路が押圧により閉塞する恐れが低減するためシールの誤判定がより確実になくなる。
In the invention which concerns on Claim 2 , the said communicating path is a structure which is a through-hole provided in the plate | board thickness part of the said rotation prevention member. With such a configuration, in addition to the action of the invention according to claim 1 , the possibility of the communication path being blocked by pressing when the diaphragm is held is reduced, so that erroneous seal determination is more reliably eliminated.

請求項３に係る発明においては、前記カバー部材の上面に、前記ネジ締結時のトルクを受け易くする垂直面及びネジ緩め時のトルクを受けづらくする傾斜面を設ける構成。そしてこのような構成により、請求項１又は２に係る発明の作用に加え、ネジ締結時には垂直面に指等をかけてカバー部材を回動することにより容易に締結を行うことができ、また、カバー部材を取り外す時には傾斜面で指等が滑るため容易に取り外すことはできない。
In the invention which concerns on Claim 3 , the structure which provides the inclined surface which becomes difficult to receive the vertical surface which makes it easy to receive the torque at the time of the said screw fastening, and the torque at the time of screw loosening on the upper surface of the said cover member. And by such a structure, in addition to the effect | action of the invention which concerns on Claim 1 or 2 , at the time of screw fastening, it can fasten easily by rotating a cover member with a finger etc. on a vertical surface, When removing the cover member, the finger or the like slides on the inclined surface and cannot be easily removed.

請求項４に係る発明においては、前記傾斜面に、前記カバー部材を緩め方向に回動可能な工具挿入用の溝或いは孔を設ける構成。そしてこのような構成により、請求項３に係る発明の作用に加え、カバー部材の取り外し時、工具の先端を傾斜面に形成した溝或いは孔にかけてカバー部材を回動することにより容易に取り外すことができる。
In the invention which concerns on Claim 4 , the structure which provides the groove | channel or hole for tool insertion which can rotate the said cover member in the loosening direction in the said inclined surface. With this configuration, in addition to the operation of the invention according to claim 3 , when removing the cover member, the cover member can be easily removed by turning the cover member over the groove or hole formed in the inclined surface. it can.

請求項５に係る発明においては、前記ダイヤフラムポンプ装置は、ディーゼルフィルタ用である構成。そしてこのような構成により、請求項１乃至４に係る発明の作用に加え、ディーゼルフィルタの信頼性が高まる。
In the invention which concerns on Claim 5 , the said diaphragm pump apparatus is a structure for diesel filters. Such a configuration increases the reliability of the diesel filter in addition to the effects of the inventions according to claims 1 to 4 .

請求項１に係る発明においては、ボデーとカバー部材との固定を短時間且つ容易に行うことができるため生産コストを低減することができる。また、ボデーとカバー部材との固定時、ダイヤフラムの連れ回りを防止することができ、ダイヤフラムの摩滅、或いは組み付け不具合をなくすることができるため、装置の信頼性を高めることができる。更に、シール箇所、即ちボデーの上端部とダイヤフラム外周下端部との間にシール不良がある場合には、検査用の加圧空気はそのシール不良箇所よりシール確認用連通路を介して外部に漏れるためシール箇所のシール不良を適正に判定することができ、それだけダイヤフラムポンプ装置の信頼性を高めることができる。
In the invention which concerns on Claim 1 , since a body and a cover member can be fixed in a short time and easily, production cost can be reduced. In addition, when the body and the cover member are fixed, the accompanying rotation of the diaphragm can be prevented, and the diaphragm can be prevented from being worn out or assembled. Therefore, the reliability of the apparatus can be improved. Further, when there is a seal failure between the seal location, that is, the upper end of the body and the lower end of the outer periphery of the diaphragm, the pressurized air for inspection leaks to the outside through the communication passage for seal confirmation from the location of the seal failure. Therefore, it is possible to properly determine the seal failure at the seal location, and the reliability of the diaphragm pump device can be increased accordingly.

請求項２に係る発明においては、連通路を連れ回り防止部材の板厚部分に設ける通し孔とすることにより、請求項１に係る発明の効果に加え、ダイヤフラムの狭持時に連通路が押圧により閉塞する恐れが低減するためシールの誤判定をより確実に防止することができ、ダイヤフラムポンプ装置の信頼性をより高めることができる。
In invention according to claim 2, by a through hole provided in the thickness portion around preventing member take the communication path, in addition to the advantages recited in claim 1, communication path by pressing upon holding the diaphragm Since the possibility of blockage is reduced, it is possible to prevent erroneous seal determination more reliably and to further improve the reliability of the diaphragm pump device.

請求項３に係る発明においては、カバー部材の上面にネジ締結時のトルクを受け易くする垂直面及びネジ緩め時のトルクを受けづらくする傾斜面を設けることにより、請求項１又は２に係る発明の効果に加え、ネジ締結時には垂直面に指等をかけてカバー部材を回動することができるためその固定を容易に行うことができ、また、カバー部材を取り外す時には傾斜面で指等が滑るため容易に取り外すことはできないため、それだけダイヤフラムポンプ装置の信頼性を高めることができる。
In the invention which concerns on Claim 3 , the invention which concerns on Claim 1 or 2 by providing the vertical surface which makes it easy to receive the torque at the time of screw fastening on the upper surface of a cover member, and the inclined surface which makes it difficult to receive the torque at the time of screw loosening. In addition to the above effect, when the screw is fastened, the cover member can be rotated by placing a finger or the like on the vertical surface, so that it can be fixed easily, and when removing the cover member, the finger or the like slides on the inclined surface Therefore, since it cannot be removed easily, the reliability of the diaphragm pump device can be increased accordingly.

請求項４に係る発明においては、傾斜面にカバー部材を緩め方向に回動可能な工具挿入用の溝或いは孔を設けることにより、請求項３に係る発明の効果に加え、カバー部材の取り外し時、工具の先端を傾斜面に形成した溝或いは孔にかけてカバー部材を回動することにより容易に取り外すことができるため、廃棄時にダイヤフラムポンプ装置の各部品を容易に分別廃棄することができる。
In the invention according to claim 4 , in addition to the effect of the invention according to claim 3 , when the cover member is removed, the inclined surface is provided with a groove or hole for inserting a tool that can rotate the cover member in the loosening direction. Since the cover member can be easily removed by turning the tip of the tool over the groove or hole formed on the inclined surface, each part of the diaphragm pump device can be easily separated and discarded at the time of disposal.

請求項５に係る発明においては、ダイヤフラムポンプ装置をディーゼルフィルタ用とすることにより、請求項１乃至４に係る発明の効果に加え、ディーゼルフィルタの信頼性を高めることができる。 In the invention which concerns on Claim 5 , in addition to the effect of the invention which concerns on Claims 1 thru | or 4 by using a diaphragm pump apparatus for diesel filters, the reliability of a diesel filter can be improved.

図１乃至図５は、本願発明のダイヤフラムポンプ装置を示す断面図であり、図１はディーゼルフィルタを含めた断面図、図２はダイヤフラムポンプ装置の拡大断面図、図３はダイヤフラムポンプ装置のカバー部材を取り外した平面図、図４はダイヤフラムポンプ装置の平面図、図５はダイヤフラムポンプ装置の側面図である。構造について説明する。   1 to 5 are sectional views showing a diaphragm pump device according to the present invention, FIG. 1 is a sectional view including a diesel filter, FIG. 2 is an enlarged sectional view of the diaphragm pump device, and FIG. 3 is a cover of the diaphragm pump device. FIG. 4 is a plan view of the diaphragm pump device, and FIG. 5 is a side view of the diaphragm pump device. The structure will be described.

ディーゼルフィルタ２０について説明する。ディーゼルフィルタ２０は、外殻を形成するコップ状のケース２１と、該ケース２１の上方開口端に着脱自在に取り付けられるキャップ２２と、ケース２１内に収納配置されるフィルタ部材２３等よりなる。   The diesel filter 20 will be described. The diesel filter 20 includes a cup-shaped case 21 that forms an outer shell, a cap 22 that is detachably attached to an upper opening end of the case 21, a filter member 23 that is housed in the case 21, and the like.

ケース２１は、上方が開口された樹脂製の中空円筒部材であり、その上端部外周にはネジ２１ａが形成される。フィルタ部材２３は、その中央に位置し芯をも兼ねる燃料通路２３ａと、該燃料通路２３ａの外周上に同心状に巻かれた紙等から成形されるエレメント２３ｂと、図示しない孔が設けられる上部端板２３ｃと、同じく図示しない孔が設けられる下部端板２３ｄとからユニット状に形成される。   The case 21 is a resin-made hollow cylindrical member having an upper opening, and a screw 21a is formed on the outer periphery of the upper end portion. The filter member 23 is located at the center of the fuel passage 23a which also serves as a core, an element 23b formed from paper or the like wound concentrically on the outer periphery of the fuel passage 23a, and an upper portion provided with a hole (not shown). It is formed in a unit shape from the end plate 23c and a lower end plate 23d provided with a hole (not shown).

そして、フィルタ部材２３をケース２１内に収納配置した状態で、ケース２１内の上下に上部空間２５及び下部空間２６が形成される。下部空間２６は、燃料内に含まれる水等が分離、貯留されるための空間であり、図示しないドレンコックや水位センサが取り付けられ、所定以上溜まった水等はドレンコックを開放することにより排出される。   The upper space 25 and the lower space 26 are formed above and below the case 21 with the filter member 23 housed in the case 21. The lower space 26 is a space for separating and storing water and the like contained in the fuel. A drain cock and a water level sensor (not shown) are attached, and the water accumulated more than a predetermined amount is discharged by opening the drain cock. Is done.

前記キャップ２２は樹脂製で、上面には後記のダイヤフラムポンプ装置３５が一体的に形成される部材であり、その側面には、流体流入通路としての燃料流入管２７及び流体流出通路としての燃料流出管２８が取り付けられる。そして、燃料流入管２７はキャップ２２内に形成される後記のポンプ室４６に連通されるとともに、燃料流出管２８はケース２１内の上部空間２５に連通される。また、燃料流入管２７とポンプ室４６との間には弁部材としての第１の逆止弁２９が配置され、燃料流入管２７からポンプ室４６方向への流れのみを許容している。更にポンプ室４６と前記フィルタ部材２３の燃料通路２３ａとの間には同じく弁部材としての第２の逆止弁３０が配置されており、ポンプ室４６から燃料通路２３ａ方向への流れのみを許容している。   The cap 22 is made of a resin, and a diaphragm pump device 35, which will be described later, is integrally formed on the upper surface, and a fuel inflow pipe 27 as a fluid inflow passage and a fuel outflow as a fluid outflow passage on its side surfaces. A tube 28 is attached. The fuel inflow pipe 27 communicates with a pump chamber 46 described later formed in the cap 22, and the fuel outflow pipe 28 communicates with the upper space 25 in the case 21. Further, a first check valve 29 as a valve member is disposed between the fuel inflow pipe 27 and the pump chamber 46, and allows only a flow from the fuel inflow pipe 27 toward the pump chamber 46. Further, a second check valve 30 as a valve member is disposed between the pump chamber 46 and the fuel passage 23a of the filter member 23, and allows only the flow from the pump chamber 46 toward the fuel passage 23a. is doing.

ケース２１とキャップ２２の連結は、まず、フィルタ部材２３をケース２１内に収納し、キャップ２２の下端外周部にパッキン２４を取り付けた状態でキャップ２２をケース上端部内に嵌合し、次いで、締付部材３１をケース上端部外周上のネジ２１ａに合わせて締め付け、両者を密に締結する。フィルタ部材２３を交換する場合は前記の手順を逆に行うことになる。   To connect the case 21 and the cap 22, first, the filter member 23 is housed in the case 21, and the cap 22 is fitted into the upper end of the case with the packing 24 attached to the outer periphery of the lower end of the cap 22, and then tightened. The attachment member 31 is tightened according to the screw 21a on the outer periphery of the upper end of the case, and both are tightened tightly. When replacing the filter member 23, the above procedure is reversed.

ケース２１とキャップ２２の連結後の燃料の流れは、図に黒塗りの矢印(1)〜(5)で示す経路で流れることになる。即ち、燃料流入管２７から矢印(1)のように流入する燃料は、第１の逆止弁２９を経てポンプ室４６に流れ、次いで矢印(2)、(3)で示すように第２の逆止弁３０及び燃料通路２３ａを経て下部空間２６に至る。下部空間２６で含まれる水等が分離された後、燃料はエレメント２３ｂを通過する際含まれる異物が除去され、異物が除去された燃料は矢印(4)、(5)で示すように流れ、燃料流出管２８より排出される。   The fuel flow after connection of the case 21 and the cap 22 flows along a path indicated by black arrows (1) to (5) in the drawing. That is, the fuel flowing in from the fuel inflow pipe 27 as shown by the arrow (1) flows into the pump chamber 46 through the first check valve 29, and then, as shown by the arrows (2) and (3), the second It reaches the lower space 26 through the check valve 30 and the fuel passage 23a. After the water and the like contained in the lower space 26 are separated, the foreign matter contained when the fuel passes through the element 23b is removed, and the fuel from which the foreign matter has been removed flows as indicated by arrows (4) and (5), It is discharged from the fuel outflow pipe 28.

次いで、キャップ２２の上方に一体に形成されるダイヤフラムポンプ装置３５について説明する。ダイヤフラムポンプ装置３５は、外郭を形成しその上端に上方開口部４１を有するボデー４０と、該ボデー４０の上方開口部４１を閉塞するカバー部材５０と、ボデー４０とカバー部材５０との間で狭持されるダイヤフラム６０と、ダイヤフラム６０を手動で上下動させるノブ６５と、ダイヤフラム６０とカバー部材５０との間に配設される連れ回り防止部材７０等からなる。   Next, the diaphragm pump device 35 that is integrally formed above the cap 22 will be described. The diaphragm pump device 35 includes a body 40 that forms an outer shell and has an upper opening 41 at an upper end thereof, a cover member 50 that closes the upper opening 41 of the body 40, and a narrow space between the body 40 and the cover member 50. It comprises a diaphragm 60 to be held, a knob 65 for manually moving the diaphragm 60 up and down, an anti-rotation member 70 disposed between the diaphragm 60 and the cover member 50, and the like.

前記ボデー４０は、前記キャップ２２と一体に形成される樹脂製の部材であり、上方開口部４１を有しその外周上端部には肉厚部４２が形成される。該肉厚部４２の外周側面にはネジ４３が設けられ、更にその上面内側にはダイヤフラム６０を位置決め並びにシールするためのリング状の凹溝４４が形成されるとともに、その上面外側には後記の連れ回り防止部材７０を位置決めするための４個の突起部４５が図３に示すように等間隔に設けられている。   The body 40 is a resin member formed integrally with the cap 22, has an upper opening 41, and a thick portion 42 is formed at the outer peripheral upper end. A screw 43 is provided on the outer peripheral side surface of the thick portion 42, and further, a ring-shaped concave groove 44 for positioning and sealing the diaphragm 60 is formed on the inner surface of the thick portion 42. Four protrusions 45 for positioning the follow-up preventing member 70 are provided at equal intervals as shown in FIG.

前記カバー部材５０は、断面皿形状の樹脂製部材であり、その中央部には開口５２を有する小径の筒状部５１が形成され、その筒状部５１から外周部に向かって高さの高い第１水平部５３、高さの低い第２水平部５４及び垂直状の外周端折曲部５５が形成されるとともに、外周端折曲部５５の内側には、ボデー４０の肉厚部４２の外周側面に形成されるネジ４３に螺合するネジ５６が形成される。   The cover member 50 is a resin member having a dish-shaped cross section, and a small-diameter cylindrical portion 51 having an opening 52 is formed at the center thereof, and the height increases from the cylindrical portion 51 toward the outer peripheral portion. A first horizontal portion 53, a second horizontal portion 54 having a low height, and a vertical outer peripheral end bent portion 55 are formed. Inside the outer peripheral end bent portion 55, the thick portion 42 of the body 40 is formed. A screw 56 that is screwed into a screw 43 formed on the outer peripheral side surface is formed.

前記ダイヤフラム６０は、ゴム製の円板形状の部材であり、その中央には開口部６８が設けられ、且つその外周端部下面には前記ボデー４０の肉厚部４２の外周上面に形成されるリング状の凹溝４４に係合可能な係止凸部６１が形成される。そして、この係止凸部６１をリング状の凹溝４４に載置し、カバー部材５０をキャップ２２の肉厚部４２に螺合させることによりダイヤフラム６０を強固に狭持し、ダイヤフラム６０を狭持することによりダイヤフラム６０を挟んでボデー４０内にポンプ室４６が形成されるとともに、カバー部材５０内に大気室５７が形成される。   The diaphragm 60 is a rubber disk-shaped member, and an opening 68 is provided at the center thereof, and the lower surface of the outer peripheral end portion is formed on the outer peripheral upper surface of the thick portion 42 of the body 40. A locking convex portion 61 that can be engaged with the ring-shaped concave groove 44 is formed. Then, the locking convex portion 61 is placed in the ring-shaped concave groove 44, and the cover member 50 is screwed into the thick portion 42 of the cap 22, thereby firmly holding the diaphragm 60 and narrowing the diaphragm 60. By holding, the pump chamber 46 is formed in the body 40 with the diaphragm 60 interposed therebetween, and the atmospheric chamber 57 is formed in the cover member 50.

符号６４は金属製のロッドであり、該ロッド６４は、その上方に内部にネジが形成される筒状立設部６４ａを有し、そのほぼ中央に水平で円盤状のフランジ６４ｂを有し、更に下方にかしめ部６４ｃを有している。そして、かしめ部６４ｃには上方から順に上部板６２、ダイヤフラム６０及び下部板６３がそれぞれの開口部を挿入することにより装着されるとともに、最後にかしめ部６４ｃの先端をかしめることにより、ダイヤフラム６０は上部板６２及び下部板６３で狭持された状態でロッド６４に強固に固定される。   Reference numeral 64 is a metal rod, and the rod 64 has a cylindrical standing portion 64a in which a screw is formed inside, and a horizontal and disc-shaped flange 64b at the substantially center thereof. Further, a caulking portion 64c is provided below. Then, the upper plate 62, the diaphragm 60, and the lower plate 63 are attached to the caulking portion 64c in order from above by inserting the respective openings, and finally, the tip of the caulking portion 64c is caulked to thereby attach the diaphragm 60. Is firmly fixed to the rod 64 while being held between the upper plate 62 and the lower plate 63.

前記ノブ６５は、カバー部材５０の上方に配置され、ダイヤフラム６０を弾性変形させる手動操作部としての樹脂製の部材であり、その上面を指等で押さえつける押圧部６５ａ、その中央部下面に垂下形成される筒状垂下部６５ｂ及びその中央部上面に形成されるビス口６５ｃを有する。そして、筒状垂下部６５ｂの内部には、内部にネジが形成されるロッド６４の筒状立設部６４ａが嵌合され、押圧部６５ａの上面に形成されるビス口６５ｃからビス６６を螺合することによりノブ６５とロッド６４とを一体的に固定する。このノブ６５とロッド６４との固定はカバー部材５０を間に挟んで行われる。   The knob 65 is a resin member as a manual operation unit that is disposed above the cover member 50 and elastically deforms the diaphragm 60. The pressing unit 65a presses the upper surface with a finger or the like, and is hung on the lower surface of the central part. A cylindrical hanging portion 65b and a screw port 65c formed on the upper surface of the central portion. Then, a cylindrical standing portion 64a of a rod 64 in which a screw is formed is fitted inside the cylindrical hanging portion 65b, and a screw 66 is screwed from a screw port 65c formed on the upper surface of the pressing portion 65a. By joining, the knob 65 and the rod 64 are fixed integrally. The knob 65 and the rod 64 are fixed with the cover member 50 interposed therebetween.

また、筒状垂下部６５ｂの外周部は、カバー部材５０の筒状部５１内に摺動自在に配設される。なお、図示しないが筒状垂下部６５ｂの外周面、或いはカバー部材５０の筒状部５１の内面のいずれかには溝が設けられており、カバー部材５０とダイヤフラム６０とにより形成される大気室５７を常時大気に連通させる。   Further, the outer peripheral portion of the cylindrical hanging portion 65 b is slidably disposed in the cylindrical portion 51 of the cover member 50. Although not shown, a groove is provided on either the outer peripheral surface of the cylindrical hanging portion 65 b or the inner surface of the cylindrical portion 51 of the cover member 50, and an atmospheric chamber formed by the cover member 50 and the diaphragm 60. 57 is always in communication with the atmosphere.

そして、カバー部材５０を間に挟んでノブ６５とロッド６４とを一体的に固定する際、ノブ６５の内周面とカバー部材５０の第１水平部５３の上面との間にスプリング６７が介在され、ポンプ室４６を常時拡大方向へ付勢する、別言すれば、ノブ６５及びダイヤフラム６０は常時上動される。そのため押圧部６５ａを押圧することにより筒状垂下部６５ｂは、カバー部材５０の筒状部５１内を摺動し、筒状垂下部６５ｂに一体的に固定されるダイヤフラム６０はボデー４０内で上下動しポンピング作用が行われる。なお、このダイヤフラムポンプ装置３５は、フィルタ部材２３を交換した後とか、ディーゼルフィルタ２０から水抜きを行う時等に使われる。   When the knob 65 and the rod 64 are integrally fixed with the cover member 50 interposed therebetween, a spring 67 is interposed between the inner peripheral surface of the knob 65 and the upper surface of the first horizontal portion 53 of the cover member 50. Thus, the pump chamber 46 is constantly urged in the enlargement direction, in other words, the knob 65 and the diaphragm 60 are always moved upward. Therefore, when the pressing portion 65a is pressed, the cylindrical hanging portion 65b slides in the cylindrical portion 51 of the cover member 50, and the diaphragm 60 fixed integrally with the cylindrical hanging portion 65b moves up and down in the body 40. A moving pumping action is performed. The diaphragm pump device 35 is used after replacing the filter member 23 or when draining water from the diesel filter 20.

本願発明のダイヤフラムポンプ装置３５は、ボデー４０の肉厚部４２の外周側面に形成されるネジ４３と、カバー部材５０の外周端折曲部５５の内面に形成されるネジ５６とを螺合することにより両者の締結並びにダイヤフラム６０の狭持が行われるところ、カバー部材５０は樹脂製で、ダイヤフラム６０はゴム製であるためカバー部材５０を回転させて締め付ける際、ダイヤフラム６０の連れ回りが生じ、ダイヤフラム６０の摩滅、或いは組み付け不具合が発生する恐れがある。   In the diaphragm pump device 35 of the present invention, a screw 43 formed on the outer peripheral side surface of the thick portion 42 of the body 40 and a screw 56 formed on the inner surface of the outer peripheral end bent portion 55 of the cover member 50 are screwed together. As a result, when the two members are fastened and the diaphragm 60 is sandwiched, the cover member 50 is made of resin, and the diaphragm 60 is made of rubber. Therefore, when the cover member 50 is rotated and tightened, the diaphragm 60 is rotated, There is a possibility that the diaphragm 60 may be worn out or an assembly failure may occur.

符号７０は、ダイヤフラム６０のそのような弊害を防止する連れ回り防止部材であり、図１、図２に示すようにカバー部材５０とダイヤフラム６０との間に配設され、ダイヤフラム６０の連れ回りを防止する。該連れ回り防止部材７０は、図２、図３に示すように平板且つリング状の樹脂製の部材であり、その外周部には等間隔に４個の凹嵌部７１が設けられるとともに、凹嵌部７１の底部から内周面に中心部に向かって貫通した通し孔であるシール確認用連通路７２が設けられる。なお、連れ回り防止部材７０は金属製でもよく、また、フィルム状のシートでもよい。   Reference numeral 70 denotes a follow-up preventing member for preventing such a harmful effect of the diaphragm 60, which is disposed between the cover member 50 and the diaphragm 60 as shown in FIGS. To prevent. The anti-rotation member 70 is a flat and ring-shaped resin member as shown in FIGS. 2 and 3, and four concave fitting portions 71 are provided at equal intervals on the outer peripheral portion thereof. A seal confirmation communication path 72 that is a through-hole penetrating from the bottom of the fitting portion 71 toward the center portion is provided on the inner peripheral surface. The anti-rotation member 70 may be made of metal or a film-like sheet.

凹嵌部７１の円弧方向の幅は、ボデー４０の肉厚部４２の上面に形成される突起部４５の円弧方向の幅より若干大きくされており、連れ回り防止部材７０のダイヤフラム６０上への載置は、図３に示すようにその４個の凹嵌部７１を４個の突起部４５に嵌入することによって行われる。そのため、ボデー４０とカバー部材５０とのネジ締結時には、カバー部材５０の第２水平部５４の内面は連れ回り防止部材７０の上面に当接し、該連れ回り防止部材７０を連れ回そうとするが連れ回り防止部材７０は凹嵌部７１によりボデー４０の肉厚部４２上面の突起部４５に係合されているためその連れ回りは防止され、結果的に連れ回り防止部材７０の下方に位置するダイヤフラム６０も連れ回りは防止される。   The width in the arc direction of the recessed fitting portion 71 is slightly larger than the width in the arc direction of the protruding portion 45 formed on the upper surface of the thick portion 42 of the body 40, and the anti-rotation member 70 is placed on the diaphragm 60. As shown in FIG. 3, the mounting is performed by inserting the four concave fitting portions 71 into the four projecting portions 45. Therefore, when the screws of the body 40 and the cover member 50 are fastened, the inner surface of the second horizontal portion 54 of the cover member 50 comes into contact with the upper surface of the follow-up preventing member 70 and tries to rotate the follow-up preventing member 70. Since the accompanying prevention member 70 is engaged with the protrusion 45 on the upper surface of the thick portion 42 of the body 40 by the concave fitting portion 71, the accompanying prevention is prevented, and as a result, the accompanying prevention member 70 is positioned below the accompanying prevention member 70. The diaphragm 60 is also prevented from being carried around.

前記シール確認用連通路７２は、ボデー４０の肉厚部４２上面の凹溝４４とダイヤフラム６０の係止凸部６１とのシールの確認のために用いられる。従来ボデー４０の凹溝４４とダイヤフラム６０の係止凸部６１とのシールの確認は、大気室５７側或いはポンプ室４６側から加圧空気を加え、その加圧空気が漏れていないかどうかで確認している。   The seal confirmation communication path 72 is used for confirming the seal between the concave groove 44 on the upper surface of the thick part 42 of the body 40 and the engaging convex part 61 of the diaphragm 60. The confirmation of the seal between the recessed groove 44 of the conventional body 40 and the locking projection 61 of the diaphragm 60 is based on whether pressurized air is applied from the atmosphere chamber 57 side or the pump chamber 46 side and the pressurized air does not leak. I have confirmed.

ところで、カバー部材５０とダイヤフラム６０との間に連れ回り防止部材７０を介在させるとカバー部材５０の第２水平部５４の内面と連れ回り防止部材７０の上面とでシールが行われたり、また、ボデー４０のネジ４３とカバー部材５０のネジ５６との螺合箇所には通常若干弱めの接着剤が塗布されて締結が行われているためやはりその箇所で完全とはいえないがシールが行われる。   By the way, when the anti-rotation member 70 is interposed between the cover member 50 and the diaphragm 60, the inner surface of the second horizontal portion 54 of the cover member 50 and the upper surface of the anti-rotation member 70 are sealed. Since the screw 43 of the body 40 and the screw 56 of the cover member 50 are usually tightened by applying a slightly weaker adhesive, sealing is performed at that point, though not completely. .

そのため、例えば、シール性が最も必要となるボデー４０の凹溝４４とダイヤフラム６０の係止凸部６１との間に漏れが生じていたとしても、前記したようなカバー部材５０の第２水平部５４の内面と連れ回り防止部材７０の上面との間の箇所、及びボデー４０のネジ４３とカバー部材５０のネジ５６との螺合箇所がシール状態にあれば加圧空気は漏れないためシール性が最も必要となる箇所のシールを確認することはできなくなる。勿論、シール性が最も必要となる箇所以外の箇所、即ちカバー部材５０の第２水平部５４の内面と連れ回り防止部材７０の上面との間の箇所、及びボデー４０のネジ４３とカバー部材５０のネジ５６との螺合箇所が常時完全なシール状態にあれば問題はないが、それらの箇所は組み立て時に一時的にシール状態になる可能性は高いがこのダイヤフラムポンプ装置３５の車両搭載時等には振動でそれらの箇所のシール性が損なわれる恐れが大であり前記シール性が最も必要となる箇所のシールを確実に確認することは重要な要件となる。   Therefore, for example, even if a leak occurs between the concave groove 44 of the body 40 and the locking convex portion 61 of the diaphragm 60 that require the most sealing performance, the second horizontal portion of the cover member 50 as described above. If the portion between the inner surface of 54 and the upper surface of the anti-rotation member 70 and the screwed portion between the screw 43 of the body 40 and the screw 56 of the cover member 50 are in a sealed state, the pressurized air does not leak, so that sealing performance is achieved. It becomes impossible to confirm the seal of the place where is most necessary. Of course, locations other than those where sealability is most required, that is, locations between the inner surface of the second horizontal portion 54 of the cover member 50 and the upper surface of the anti-rotation member 70, and the screw 43 of the body 40 and the cover member 50. There is no problem if the screwed portion with the screw 56 is always in a completely sealed state, but there is a high possibility that these portions will be temporarily in a sealed state at the time of assembly, but when the diaphragm pump device 35 is mounted on a vehicle, etc. However, there is a great risk that the sealability of those places will be impaired by vibration, and it is an important requirement to surely check the seals at places where the sealability is most needed.

前記シール確認用連通路７２は、カバー部材５０の第２水平部５４の内面と連れ回り防止部材７０の上面との間の箇所、及びボデー４０のネジ４３とカバー部材５０のネジ５６との螺合箇所が完全なシール状態にある時のシール性が最も必要となるボデー４０の凹溝４４とダイヤフラム６０の係止凸部６１との間の箇所のシール性を確実に確認することができるものである。即ち、シール確認用連通路７２は、凹嵌部７１の底部から内周面に中心部に向かって貫通し、図１、図２に示すように大気室５７に連通されており、ボデー４０の凹溝４４とダイヤフラム６０の係止凸部６１との間の箇所でシール不良が生じている場合には、例えばポンプ室４６側から加圧空気を加えるとその加圧空気はシール確認用連通路７２より大気室５７に確実に漏れるのでシール不良を明確に確認することができる。   The seal confirmation communication path 72 is formed at a location between the inner surface of the second horizontal portion 54 of the cover member 50 and the upper surface of the anti-rotation member 70 and between the screw 43 of the body 40 and the screw 56 of the cover member 50. The sealability of the location between the concave groove 44 of the body 40 and the locking projection 61 of the diaphragm 60 where the sealability is most necessary when the joint is in a completely sealed state can be reliably confirmed. It is. That is, the communication passage 72 for seal confirmation penetrates from the bottom of the recessed fitting portion 71 to the inner peripheral surface toward the central portion and communicates with the atmospheric chamber 57 as shown in FIGS. In the case where a seal failure occurs at a location between the concave groove 44 and the locking convex portion 61 of the diaphragm 60, for example, when pressurized air is applied from the pump chamber 46 side, the pressurized air is communicated with the seal confirmation communication path. 72 reliably leaks to the atmospheric chamber 57, so that a seal failure can be clearly confirmed.

なお、シール確認用連通路７２は、連れ回り防止部材７０内を貫通して設けられるが、連れ回り防止部材７０は樹脂製でありボデー４０とカバー部材５０とのネジ締結時に閉塞されることはない。また、連れ回り防止部材７０内でシール確認用連通路７２が設けられる下からの高さは、ボデー４０の肉厚部４２の上面に設けられる突起部４５の高さより高い位置に設けられ、突起部４５によりシール確認用連通路７２が閉塞することがないようにされている。   Note that the seal confirmation communication path 72 is provided so as to penetrate through the anti-rotation member 70, but the anti-rotation member 70 is made of resin and is not blocked when the body 40 and the cover member 50 are screwed together. Absent. In addition, the height from the bottom where the seal confirmation communication path 72 is provided in the anti-rotation member 70 is provided at a position higher than the height of the protrusion 45 provided on the upper surface of the thick part 42 of the body 40. The seal confirmation communication path 72 is not blocked by the portion 45.

また、シール確認用連通路７２は、連れ回り防止部材７０内を貫通して設けられるものとして説明したが、図６、図７に示すように図２、図３のものと同様凹嵌部７１の底部から内周面に中心部に向かって設けられる位置は同じであるが、その高さ位置を連れ回り防止部材７０の表面にし、上方に開放で且つ適当な深さで設けることもできる。このような位置に設けることによりシール確認用連通路７２の形成が容易になるとともに、深さを適当に選定することにより、そのシール確認用連通路７２がカバー部材５０の締結時に閉塞されることをより確実に防止することができる。   Further, the seal confirmation communication path 72 has been described as being provided penetrating through the follow-up preventing member 70, but as shown in FIGS. 6 and 7, the recessed fitting portion 71 is the same as in FIGS. Although the position provided from the bottom part to the inner peripheral surface toward the center part is the same, the height position can be set as the surface of the anti-rotation member 70 and open upward and at an appropriate depth. By providing at such a position, formation of the seal confirmation communication path 72 is facilitated, and the seal confirmation communication path 72 is closed when the cover member 50 is fastened by appropriately selecting the depth. Can be prevented more reliably.

前記カバー部材５０の高さの低い第２水平部５４の上面には、図４、図５に示すようにカバー部材５０の締結を容易にし、その取り外しを困難にする４個の膨出突起５８が等間隔にカバー部材５０と一体に形成されている。   As shown in FIGS. 4 and 5, four bulging protrusions 58 that facilitate the fastening of the cover member 50 and make it difficult to remove the cover member 50 are provided on the upper surface of the second horizontal portion 54 having a low height. Are formed integrally with the cover member 50 at equal intervals.

この膨出突起５８は、垂直面５８ａ及び傾斜面５８ｂを有し、垂直面５８ａはカバー部材５０を締め付ける時計方向で見た場合その上流側、図５でいえば右側にくるように設定されるとともに、傾斜面５８ｂはその下流側、図５でいえば左側にくるように設定され、更に図４に示すように傾斜面５８ｂは平面視円弧状に形成される。そのため図５に示すＡ箇所には垂直面５８ａが位置し、Ｂ箇所には傾斜面５８ｂが位置することになる。   The bulging protrusion 58 has a vertical surface 58a and an inclined surface 58b, and the vertical surface 58a is set to be upstream of the cover member 50 when viewed in the clockwise direction, and to the right in FIG. At the same time, the inclined surface 58b is set on the downstream side, that is, on the left side in FIG. 5, and the inclined surface 58b is formed in an arc shape in plan view as shown in FIG. Therefore, the vertical surface 58a is positioned at the A position shown in FIG. 5, and the inclined surface 58b is positioned at the B position.

そして、カバー部材５０の締結時には、膨出突起５８の垂直面５８ａに指を当て黒塗りの矢印で示す方向に力を加えカバー部材５０を時計方向に回動することにより行うことができる。また、その締結は図１３、図１４に示す締結用工具８０を用いることができる。   When the cover member 50 is fastened, the cover member 50 can be rotated clockwise by applying a force in the direction indicated by the black arrow by placing a finger on the vertical surface 58a of the bulging protrusion 58. Moreover, the fastening tool 80 shown in FIG. 13, FIG. 14 can be used for the fastening.

この締結用工具８０は、金属製の棒状体を十字に組み合わせてなる本体部８０ａと、本体部８０ａの外周下面に垂下して取り付けられる平板状の係止部８０ｃと、本体部８０ａの中央上面に取り付けられる十字状の取手８０ｂとからなり、平板状の係止部８０ｃの側面を膨出突起５８の垂直面５８ａに当接し、取手８０ｂを時計方向に回動することにより膨出突起５８の垂直面５８ａにトルクを作用させカバー部材５０を締結することになる。   The fastening tool 80 includes a main body portion 80a formed by combining metal rods in a cross shape, a flat plate-like locking portion 80c attached to the lower surface of the outer periphery of the main body portion 80a, and a central upper surface of the main body portion 80a. The side surface of the flat-plate-shaped latching portion 80c is in contact with the vertical surface 58a of the bulging projection 58, and the handle 80b is rotated clockwise to rotate the bulging projection 58. The cover member 50 is fastened by applying a torque to the vertical surface 58a.

このようにカバー部材５０の締結時にはその締結を容易に行うことができるが、カバー部材５０を緩める反時計方向の回転時には指等が当たる部分は傾斜面５８ｂになるため、滑ってカバー部材５０を回動することはできなくなる。そのため、悪戯等によりカバー部材５０が取り外されることはなくなる。   As described above, when the cover member 50 is fastened, it can be easily fastened. However, when the cover member 50 is rotated counterclockwise, the portion that the finger or the like hits becomes the inclined surface 58b. Can no longer rotate. Therefore, the cover member 50 is not removed due to mischief or the like.

ところで、カバー部材５０の膨出突起５８が垂直面５８ａと傾斜面５８ｂとで形成されているとカバー部材５０を取り外すことができずダイヤフラムポンプ装置３５を分解することができなくなる。その弊害をなくすものを図８、図９に示す。図に示すものは前記膨出突起５８の傾斜面５８ｂに沿って２条の専用工具を挿入可能な工具係止溝５９を設けるものである。そしてこのような工具係止溝５９を傾斜面５８ｂに設けることにより該工具係止溝５９に専用工具を係止し、カバー部材５０を緩め方向の反時計方向に回動することによりカバー部材５０を容易に取り外すことができる。なお、工具係止溝５９は単なる孔であっても良い。   By the way, if the bulging protrusion 58 of the cover member 50 is formed by the vertical surface 58a and the inclined surface 58b, the cover member 50 cannot be removed and the diaphragm pump device 35 cannot be disassembled. What eliminates the adverse effects is shown in FIGS. In the figure, a tool locking groove 59 into which two dedicated tools can be inserted is provided along the inclined surface 58b of the bulging protrusion 58. Then, by providing such a tool locking groove 59 on the inclined surface 58b, the dedicated tool is locked in the tool locking groove 59, and the cover member 50 is rotated counterclockwise in the loosening direction, thereby covering the cover member 50. Can be easily removed. The tool locking groove 59 may be a simple hole.

カバー部材５０を取り外す専用工具は図１５、図１６に示す緩め用工具８１を用いることができる。この緩め用工具８１は、金属製の棒状体を十字に組み合わせてなる本体部８１ａと、本体部８１ａの外周下面に垂下して取り付けられる２本の棒状の係止部８１ｃと、本体部８１ａの中央上面に取り付けられる十字状の取手８１ｂとからなり、２本の棒状の係止部８１ｃを膨出突起５８の傾斜面５８ｂに沿って形成した２条の工具係止溝５９の側端に当接し、取手８１ｂを反時計方向に回動することにより膨出突起５８の工具係止溝５９の側端にトルクを作用させカバー部材５０を緩めることになる。このように専用の緩め用工具８１を用いることによりカバー部材５０を容易に取り外すことができる。   As a dedicated tool for removing the cover member 50, a loosening tool 81 shown in FIGS. 15 and 16 can be used. The loosening tool 81 includes a main body portion 81a formed by combining metal rods in a cross shape, two bar-shaped locking portions 81c attached to the lower surface of the outer periphery of the main body portion 81a, and a main body portion 81a. It consists of a cross-shaped handle 81b attached to the upper surface of the center, and two bar-shaped locking portions 81c are formed on the side ends of the two tool locking grooves 59 formed along the inclined surface 58b of the bulging projection 58. The handle 81b is rotated counterclockwise so that a torque is applied to the side end of the tool locking groove 59 of the bulging projection 58, and the cover member 50 is loosened. Thus, the cover member 50 can be easily removed by using the dedicated loosening tool 81.

図１０、図１１に示すものは、膨出突起５８の取り付け位置の変形例であり、この例のものはカバー部材５０の外周端折曲部５５の外周側面に４個の膨出突起５８を等間隔にカバー部材５０と一体に形成したものである。   10 and 11 show a modification of the mounting position of the bulging protrusion 58. In this example, four bulging protrusions 58 are provided on the outer peripheral side surface of the outer peripheral end bent portion 55 of the cover member 50. FIG. It is formed integrally with the cover member 50 at equal intervals.

そしてこの膨出突起５８も垂直面５８ａ及び傾斜面５８ｂを有し、垂直面５８ａはカバー部材５０を締め付ける時計方向で見た場合その上流側、図１１でいえば右側にくるように設定されるとともに、傾斜面５８ｂはその下流側、図１１でいえば左側にくるように設定される。   The bulging protrusion 58 also has a vertical surface 58a and an inclined surface 58b, and the vertical surface 58a is set to be on the upstream side when viewed in the clockwise direction for tightening the cover member 50, on the right side in FIG. At the same time, the inclined surface 58b is set to be on the downstream side, that is, on the left side in FIG.

そして、カバー部材５０の締結時には、膨出突起５８の垂直面５８ａに指を当て黒塗りの矢印で示す方向に力を加えカバー部材５０を時計方向に回動することにより行うことができる。また、その締結は図４、図５のもので説明したように図１３、図１４に示す締結用工具８０を用いて行うこともできる。なお、この場合、図４、図５のものより対向する平板状の係止部８０ｃ間の距離は長くなる。   When the cover member 50 is fastened, the cover member 50 can be rotated clockwise by applying a force in the direction indicated by the black arrow by placing a finger on the vertical surface 58a of the bulging protrusion 58. Moreover, the fastening can also be performed using the fastening tool 80 shown in FIGS. 13 and 14 as described in FIGS. In this case, the distance between the flat plate-like engaging portions 80c facing each other is longer than that in FIGS.

図１２に示すものは、図１０、図１１に示すものの傾斜面５８ｂに図８、図９に示すもののように２条の工具係止溝５９を設けたものである。そして図１５、図１６で示すようにその先端に２個の係止部８１ｃを有する専用の緩め用工具８１を用いてカバー部材５０を反時計方向に回動することにより緩めるものである。なお、この場合、緩め用工具８１の２個の係止部８１ｃは、対向するもの同士が向き合うように９０度内側に折り曲げられるものになる。   In the structure shown in FIG. 12, two tool locking grooves 59 are provided on the inclined surface 58b of those shown in FIGS. 10 and 11, as shown in FIGS. Then, as shown in FIGS. 15 and 16, the cover member 50 is loosened by rotating it counterclockwise using a special loosening tool 81 having two locking portions 81c at its tip. In this case, the two locking portions 81c of the loosening tool 81 are bent 90 degrees inward so that the opposing portions face each other.

本願発明は、上記各実施の態様の構成に限定されるものではなく、発明の要旨を逸脱しない範囲において適宜設計変更可能であり、ディーゼルエンジンの燃料フィルタに設けられるダイヤフラムポンプ装置として説明したが、単なるダイヤフラムポンプ装置にも適用可能である。   The present invention is not limited to the configuration of each of the embodiments described above, and can be appropriately changed in design without departing from the gist of the invention, and has been described as a diaphragm pump device provided in a fuel filter of a diesel engine. It can also be applied to a simple diaphragm pump device.

本願発明のダイヤフラムポンプ装置を示す断面図Sectional drawing which shows the diaphragm pump apparatus of this invention 本願発明のダイヤフラムポンプ装置の拡大断面図Enlarged sectional view of the diaphragm pump device of the present invention 本願発明のダイヤフラムポンプ装置のカバー部材を取り外した平面図The top view which removed the cover member of the diaphragm pump apparatus of this invention 本願発明のダイヤフラムポンプ装置の平面図Plan view of the diaphragm pump device of the present invention 本願発明のダイヤフラムポンプ装置の側面図Side view of the diaphragm pump device of the present invention 本願発明の他のダイヤフラムポンプ装置の拡大断面図Enlarged sectional view of another diaphragm pump device of the present invention 本願発明の他のダイヤフラムポンプ装置のカバー部材を取り外した平面図The top view which removed the cover member of the other diaphragm pump apparatus of this invention 本願発明の更に他のダイヤフラムポンプ装置の平面図Plan view of still another diaphragm pump device of the present invention 本願発明の更に他のダイヤフラムポンプ装置の側面図Side view of still another diaphragm pump device of the present invention 本願発明の更に他のダイヤフラムポンプ装置の平面図Plan view of still another diaphragm pump device of the present invention 本願発明の更に他のダイヤフラムポンプ装置の側面図Side view of still another diaphragm pump device of the present invention 本願発明の更に他のダイヤフラムポンプ装置の側面図Side view of still another diaphragm pump device of the present invention 本願発明のカバー部材を締結する工具の側面図Side view of the tool for fastening the cover member of the present invention 本願発明のカバー部材を締結する工具の平面図Plan view of a tool for fastening the cover member of the present invention 本願発明のカバー部材を締結する他の工具の側面図Side view of another tool for fastening the cover member of the present invention 本願発明のカバー部材を締結する他の工具の平面図Plan view of another tool for fastening the cover member of the present invention ディーゼルエンジン用燃料供給系統の概略図Schematic diagram of fuel supply system for diesel engine 従来のダイヤフラムポンプ装置の断面図Cross-sectional view of a conventional diaphragm pump device

符号の説明Explanation of symbols

１…噴射ポンプ ２…コモンレール
３…インジェクタ ４…燃料タンク
５…ディーゼルフィルタ ６…ダイヤフラムポンプ装置
７…ボデー ８…ポンプ室
９…流体流入通路 １０…流体流出通路
１１…ダイヤフラム １２…カバー部材
１３…大気室 １４…ノブ
１５…弁部材 １６…スプリング
１７…外周先端部 １８…かしめ装置
１８ａ…ローラ ２０…ディーゼルフィルタ
２１…ケース ２１ａ…ネジ
２２…キャップ ２３…フィルタ部材
２３ａ…燃料通路 ２３ｂ…エレメント
２３ｃ…上部端板 ２３ｄ…下部端板
２４…パッキン ２５…上部空間
２６…下部空間 ２７…燃料流入管
２８…燃料流出管 ２９…第１の逆止弁
３０…第２の逆止弁 ３１…締付部材
３５…ダイヤフラムポンプ装置 ４０…ボデー
４１…上方開口部 ４２…肉厚部
４３，５６…ネジ ４４…凹溝
４５…突起部 ４６…ポンプ室
５０…カバー部材 ５１…筒状部
５２…開口 ５３…第１水平部
５４…第２水平部 ５５…外周端折曲部
５７…大気室 ５８…膨出突起
５８ａ…垂直面 ５８ｂ…傾斜面
５９…工具係止溝 ６０…ダイヤフラム
６１…係止凸部 ６２…上部板
６３…下部板 ６４…ロッド
６４ａ…筒状立設部 ６４ｂ…フランジ
６４ｃ…かしめ部 ６５…ノブ
６５ａ…押圧部 ６５ｂ…筒状垂下部
６５ｃ…ビス口 ６６…ビス
６７…スプリング ６８…開口部
７０…連れ回り防止部材 ７１…凹嵌部
７２…シール確認用連通路 ８０…締結用工具
８１…緩め用工具 ８０ａ，８１ａ…本体部
８０ｂ，８１ｂ…取手 ８０ｃ，８１ｃ…係止部 DESCRIPTION OF SYMBOLS 1 ... Injection pump 2 ... Common rail 3 ... Injector 4 ... Fuel tank 5 ... Diesel filter 6 ... Diaphragm pump apparatus 7 ... Body 8 ... Pump chamber 9 ... Fluid inflow path 10 ... Fluid outflow path 11 ... Diaphragm 12 ... Cover member 13 ... Air | atmosphere Chamber 14 ... Knob 15 ... Valve member 16 ... Spring 17 ... Outer peripheral tip 18 ... Caulking device 18a ... Roller 20 ... Diesel filter 21 ... Case 21a ... Screw 22 ... Cap 23 ... Filter member 23a ... Fuel passage 23b ... Element 23c ... Upper part End plate 23d ... Lower end plate 24 ... Packing 25 ... Upper space 26 ... Lower space 27 ... Fuel inflow pipe 28 ... Fuel outflow pipe 29 ... First check valve 30 ... Second check valve 31 ... Tightening member 35 ... Diaphragm pump device 40 ... Body 41 ... Upper opening 42 ... Thick part 43,5 6 ... Screw 44 ... Concave groove 45 ... Projection part 46 ... Pump chamber 50 ... Cover member 51 ... Cylindrical part 52 ... Opening 53 ... 1st horizontal part 54 ... 2nd horizontal part 55 ... Outer edge bending part 57 ... Atmosphere chamber 58 ... Swelling projection 58a ... Vertical surface 58b ... Inclined surface 59 ... Tool locking groove 60 ... Diaphragm 61 ... Locking projection 62 ... Upper plate 63 ... Lower plate 64 ... Rod 64a ... Cylindrical standing portion 64b ... Flange 64c ... caulking part 65 ... knob 65a ... pressing part 65b ... cylindrical hanging part 65c ... screw port 66 ... screw 67 ... spring 68 ... opening part 70 ... follow-up prevention member 71 ... concave fitting part 72 ... communication path for seal confirmation 80 ... Fastening tool 81 ... Loosening tool 80a, 81a ... Main body 80b, 81b ... Handle 80c, 81c ... Locking part

Claims (5)

外郭を形成し一端に開口部を有するボデーと、
前記ボデーの開口部を閉塞し前記ボデー内にポンプ室を形成するダイヤフラムと、
前記ダイヤフラムを挟んで前記ボデーと反対側に設けられ内部に大気室を形成するカバー部材と、
前記ダイヤフラムを弾性変形させる手動操作部と、前記ポンプ室に連通する流体流入通路及び流体流出通路と、
前記流体流入通路及び流体流出通路を開閉する弁部材と、
前記ポンプ室を拡大方向へ付勢するスプリングとを備え、
前記ボデーと前記カバー部材とをネジ締結することにより前記ダイヤフラムを狭持するダイヤフラムポンプ装置であって、
前記ボデーと前記カバー部材とによる前記ダイヤフラムの狭持箇所に連れ回り防止部材を介在させ、
前記ボデーと前記カバー部材との締結時に前記ダイヤフラムの連れ回りを防止し、
前記連れ回り防止部材に、シール確認用連通路を設けることを特徴とするダイヤフラムポンプ装置。 A body that forms an outline and has an opening at one end;
A diaphragm that closes the opening of the body and forms a pump chamber in the body;
A cover member provided on the opposite side of the body across the diaphragm and forming an air chamber therein;
A manual operation section for elastically deforming the diaphragm; a fluid inflow passage and a fluid outflow passage communicating with the pump chamber;
A valve member for opening and closing the fluid inflow passage and the fluid outflow passage;
A spring for urging the pump chamber in the expansion direction,
A diaphragm pump device that holds the diaphragm by screwing the body and the cover member,
Interposing an anti-rotation member at the sandwiched portion of the diaphragm by the body and the cover member,
Preventing rotation of the diaphragm at the time of fastening the body and the cover member ;
A diaphragm pump device characterized in that a seal confirmation communication path is provided in the accompanying prevention member. 前記連通路は、前記連れ回り防止部材の板厚部分に設ける通し孔であることを特徴とする請求項１記載のダイヤフラムポンプ装置。 The communication passage, a diaphragm pump device according to claim 1, characterized in that the through hole provided in the thickness portion of the Child about preventing member. 前記カバー部材の上面に、前記ネジ締結時のトルクを受け易くする垂直面及びネジ緩め時のトルクを受けづらくする傾斜面を設けることを特徴とする請求項１又は２に記載のダイヤフラムポンプ装置。 3. The diaphragm pump device according to claim 1, wherein a vertical surface that makes it easy to receive torque when the screw is fastened and an inclined surface that makes it difficult to receive torque when the screw is loosened are provided on the upper surface of the cover member. 前記傾斜面に、前記カバー部材を緩め方向に回動可能な工具挿入用の溝或いは孔を設けることを特徴とする請求項３記載のダイヤフラムポンプ装置。 4. The diaphragm pump device according to claim 3 , wherein a groove or hole for inserting a tool capable of rotating the cover member in a loosening direction is provided on the inclined surface. 前記ダイヤフラムポンプ装置は、ディーゼルフィルタ用であることを特徴とする請求項１乃至４のいずれか一項に記載のダイヤフラムポンプ装置。 The diaphragm pump device according to any one of claims 1 to 4, wherein the diaphragm pump device is for a diesel filter.
JP2003336725A 2003-09-29 2003-09-29 Diaphragm pump device Expired - Fee Related JP4226427B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003336725A JP4226427B2 (en) 2003-09-29 2003-09-29 Diaphragm pump device
DE102004047011A DE102004047011A1 (en) 2003-09-29 2004-09-28 Construction of a diaphragm pump designed to improve the reliability of the assembly
CNB2004100831961A CN100510378C (en) 2003-09-29 2004-09-29 Diaphragm pump structure for improving assembling reliability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003336725A JP4226427B2 (en) 2003-09-29 2003-09-29 Diaphragm pump device

Publications (2)

Publication Number Publication Date
JP2005105850A JP2005105850A (en) 2005-04-21
JP4226427B2 true JP4226427B2 (en) 2009-02-18

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Family Applications (1)

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Country Status (3)

Country Link
JP (1) JP4226427B2 (en)
CN (1) CN100510378C (en)
DE (1) DE102004047011A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4770424B2 (en) * 2005-11-24 2011-09-14 株式会社豊田自動織機 Diaphragm type pump
JP5201004B2 (en) * 2008-03-07 2013-06-05 スズキ株式会社 Plating method
JP5871742B2 (en) * 2012-07-30 2016-03-01 本田技研工業株式会社 Fuel supply device for internal combustion engine
KR102239498B1 (en) * 2014-12-29 2021-04-14 만 운트 훔멜 게엠베하 Hand pump for fuel filter
CN107882668B (en) * 2017-12-28 2023-12-19 潍柴动力股份有限公司 Fuel filter seat

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334838A (en) * 1980-01-29 1982-06-15 The Coca-Cola Company Diaphragm type fluid pump having a flexible diaphragm with an internal reinforcing plate
JPS59190462A (en) * 1983-04-12 1984-10-29 Nippon Denso Co Ltd Fuel heating type fuel filter
US4500425A (en) * 1984-06-13 1985-02-19 Allied Corporation Pump valve for liquid separator

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JP2005105850A (en) 2005-04-21
CN1603605A (en) 2005-04-06
DE102004047011A1 (en) 2005-06-02
CN100510378C (en) 2009-07-08

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