JP2008223736A - Valve element for filter and oil filter using same - Google Patents

Valve element for filter and oil filter using same Download PDF

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JP2008223736A
JP2008223736A JP2007067464A JP2007067464A JP2008223736A JP 2008223736 A JP2008223736 A JP 2008223736A JP 2007067464 A JP2007067464 A JP 2007067464A JP 2007067464 A JP2007067464 A JP 2007067464A JP 2008223736 A JP2008223736 A JP 2008223736A
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filter
drain
valve portion
oil
valve
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JP4830929B2 (en
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Yoshihiro Ohashi
義広 大橋
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Toyota Boshoku Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/10—Safety devices, e.g. by-passes
    • B01D27/106—Anti-leakage or anti-return valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/10—Safety devices, e.g. by-passes
    • B01D27/103—Bypass or safety valves

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Check Valves (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve element for a filter provided with a check valve, a relief valve and a drain valve, with a simple structure comprising not large number of components, and an oil filter using the same. <P>SOLUTION: This oil filter 1 is provided with the valve element 2 for the filter, a filter element 3, a partition member 4, a casing 5, a base part 6, and an element fixing member 7. The valve element 2 for the filter is composed of a cylindrical pressure relief valve part 21 inserted in an opening part 42 on one end side of the partition member and elastically deforming to touch an inner wall of the opening part, an annular drain valve part 22 connected to the pressure relief valve part at an inner circumference side thereof and provided to cover a drain port 63, and an annular check valve part 23 connected to the drain valve part at an inner circumference side thereof, provided to cover an flow in port 61 and having an outer circumference which can be bent with elastic deformation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、逆止弁、圧力逃がし弁及びドレン弁を備え、部品点数が少なく簡単な構造を備えるフィルタ用弁体及びそれを用いたオイルフィルタに関する。本フィルタ用弁体及びそれを用いたオイルフィルタは、内燃機関、特に自動車等のエンジン用オイルフィルタに適用することができる。   The present invention relates to a filter valve body including a check valve, a pressure relief valve and a drain valve, having a simple structure with a small number of parts, and an oil filter using the same. The valve body for a filter and an oil filter using the same can be applied to an oil filter for an engine of an internal combustion engine, particularly an automobile.

自動車等のエンジン内の潤滑回路等に設けられるオイルフィルタは、エンジン停止時等にオイルが逆流することがあるため、逆止弁が必要である。また、フィルタエレメントに対して異常な高圧力が掛かってフィルタエレメントが破損しないようにするための、圧力逃がし弁が必要である。
更に、フィルタエレメントが交換可能なオイルフィルタにおいては、フィルタエレメントを交換するためにケーシングを取り外す際、オイルがオイルフィルタ外に流出して周囲を汚すことがない構造を備えるのが望まれている。このような構造として各種構造が提案されている（例えば、特許文献１〜４を参照。）。 An oil filter provided in a lubricating circuit or the like in an engine of an automobile or the like requires a check valve because oil may flow backward when the engine is stopped. In addition, a pressure relief valve is required to prevent the filter element from being damaged due to an abnormally high pressure applied to the filter element.
Furthermore, in an oil filter in which the filter element can be replaced, it is desired to have a structure in which oil does not flow out of the oil filter and contaminate the surroundings when the casing is removed to replace the filter element. Various structures have been proposed as such structures (see, for example, Patent Documents 1 to 4).

特開平１１−６５７５号公報Japanese Patent Laid-Open No. 11-6575 特開平１１−１０４４１０号公報JP-A-11-104410 特開平１１−１３７９１７号公報JP-A-11-137717 特開平２００６−８２０１０号公報Japanese Patent Laid-Open No. 2006-82010

特許文献１においては、エンジン停止時にフィルタ内オイルの逆流を防ぎ、回路内にオイルを保持する機能を有するチェックバルブと、高圧力発生時にフィルタエレメントを保護する圧力逃がし弁を一体に具備する。しかし、ケーシングを取り外すときのオイル流出については検討されていない。
特許文献２においては、フィルタエレメントを取り外した際にセンターパイプが移動することによってドレン回路が開通し、オイルフィルタ内部に溜まったオイルをエンジンオイルパンに排出する機構を備えている。しかし、フィルタエレメントに長いセンターパイプが設けられるため、分離したフィルタエレメントの取扱いが難しい。
特許文献３においては、フィルタエレメントを取り外した際にフィルタエレメントによって閉塞していた弁体が開放されてドレン回路が開通し、オイルフィルタ内部に溜まったオイルをエンジンオイルパンに排出する機構を備えている。しかし、ドレン回路の弁体がオイルフィルタの基部側に設けられている等、ドレン回路のために部品点数が増え、複雑な構造を備える。
特許文献４においては、エレメントを交換可能なオイルフィルタにおいてエレメント下端面に配置された封止機構を有する突起がエレメントを取り外すときに封止面から離脱し、ドレン回路が開通し、フィルタ内部に溜まったオイルをエンジンオイルパンに排出する機構を備えている。しかし、突起が独立して設けられている等、ドレン回路のために部品点数が増え、複雑な構造を備える。 In Patent Document 1, a check valve having a function of preventing backflow of oil in the filter when the engine is stopped and retaining oil in the circuit and a pressure relief valve for protecting the filter element when high pressure is generated are integrally provided. However, the oil spill when removing the casing has not been studied.
In Patent Document 2, a drain circuit is opened when the center pipe moves when the filter element is removed, and a mechanism for discharging oil accumulated in the oil filter to an engine oil pan is provided. However, since the filter element is provided with a long center pipe, it is difficult to handle the separated filter element.
In Patent Document 3, the valve element closed by the filter element when the filter element is removed is opened, the drain circuit is opened, and a mechanism for discharging the oil accumulated in the oil filter to the engine oil pan is provided. Yes. However, since the drain circuit valve body is provided on the base side of the oil filter, the number of parts is increased due to the drain circuit, and a complicated structure is provided.
In Patent Document 4, in an oil filter in which an element can be replaced, a protrusion having a sealing mechanism disposed on the lower end surface of the element is detached from the sealing surface when the element is removed, and a drain circuit is opened and accumulated in the filter. It has a mechanism to discharge the oil to the engine oil pan. However, the number of parts is increased due to the drain circuit, such as the protrusions being provided independently, and a complicated structure is provided.

本発明は、上記実情に鑑みてなされたものであって、逆止弁、圧力逃がし弁及びドレン弁を備え、部品点数が少なく簡単な構造を備えるフィルタ用弁体及びそれを用いたオイルフィルタを提供することを解決すべき課題とする。   The present invention has been made in view of the above circumstances, and includes a filter valve body including a check valve, a pressure relief valve, and a drain valve, having a simple structure with a small number of parts, and an oil filter using the same. Providing is a problem to be solved.

本発明は、以下の通りである。
１．フィルタエレメントを支持する筒状の支持部材と、基部の底面部との間に挟持されるように設けられるフィルタ用弁体であって、上記基部は、該底面部の周囲に設けられる周壁部、該底面部の中心部に設けられる流出口、該底面部であり且つ該流出口の外周側に設けられているドレン口、及び該底面部であり且つ該ドレン口の外周側に設けられている流入口を具備し、上記フィルタ用弁体は、該支持部材の一端面側の開口部に挿入され且つ弾性変形して該開口部の内壁と接触する筒状の圧力逃がし弁部と、内周側が該圧力逃がし弁部と接続され且つ該ドレン口を覆うように設けられている環状のドレン弁部と、内周側が該ドレン弁部と接続され、該流入口を覆うように設けられ、且つ弾性変形によって外周部が湾曲可能な環状の逆止弁部と、から一体に形成されてなることを特徴とするフィルタ用弁体。
２．上記フィルタ用弁体は、孔が形成された円板状体であり、該圧力逃がし弁部は該円板状体の一面側へ突出し且つ該孔周辺に位置し、該逆止弁部は該円板状体の他面側に湾曲する上記１．記載のフィルタ用弁体。
３．上記ドレン弁部及び上記逆止弁部の間に該ドレン弁部及び該逆止弁部を区画する突起が周設されている上記１．又は上記２．に記載のフィルタ用弁体。
４．底面部、該底面部の周囲に設けられる周壁部、該底面部の中心部に設けられる流出口、該底面部であり且つ該流出口の外周側に設けられているドレン口、及び該底面部であり且つ該ドレン口の外周側に設けられている流入口を具備する基部と、該周壁部と係合して該底面部を覆うケーシングと、該ドレン口及び該ケーシング内に格納されるフィルタエレメントと、該フィルタエレメントの支持部材と、該支持部材及び該底面部の間に挟持されるフィルタ用弁体とを備え、
上記フィルタ用弁体は、孔が形成された円板状体であり、該支持部材の一端面側の開口部に挿入され且つ弾性変形して該開口部の内壁と接触する筒状の圧力逃がし弁部と、
内周側が該圧力逃がし弁部と接続され且つ該ドレン口を覆うように設けられている環状のドレン弁部と、
内周側が該ドレン弁部と接続され、該流入口を覆うように設けられ、且つ弾性変形によって外周部が湾曲可能な環状の逆止弁部と、から一体に形成されてなることを特徴とするオイルフィルタ。
５．上記基部は、流入口及びドレン口間に段差又は突起を有する上記４．記載のオイルフィルタ。
６．上記ドレン弁部及び上記逆止弁部の間に該ドレン弁部及び該逆止弁部を区画する突起が周設されている上記４．又は５に記載のフィルタ用弁体。
７．上記支持部材は、上記ドレン弁部を介して上記ドレン口を全周にわたって押圧可能なつば部が設けられている上記４．乃至上記６．のいずれかに記載のフィルタ用弁体。 The present invention is as follows.
1. A filter valve body provided to be sandwiched between a cylindrical support member that supports a filter element and a bottom surface portion of a base portion, wherein the base portion is a peripheral wall portion provided around the bottom surface portion, An outlet provided in the center of the bottom surface, a drain port that is the bottom surface and provided on the outer peripheral side of the outlet, and a bottom port that is provided on the outer peripheral side of the drain port The filter valve body is inserted into the opening on one end surface side of the support member and is elastically deformed to come into contact with the inner wall of the opening; An annular drain valve portion that is connected to the pressure relief valve portion and covers the drain port, an inner peripheral side is connected to the drain valve portion and covers the inflow port, and An annular check valve portion whose outer peripheral portion can be bent by elastic deformation; Filter valve element characterized by comprising formed Luo integrally.
2. The filter valve body is a disk-shaped body having a hole formed therein, the pressure relief valve portion projects to one surface side of the disk-shaped body and is located around the hole, and the check valve portion is The above 1. curved to the other surface side of the disk-shaped body. The valve body for a filter as described.
3. A protrusion that partitions the drain valve portion and the check valve portion is provided between the drain valve portion and the check valve portion. Or 2. The valve body for a filter according to 1.
4). A bottom surface portion, a peripheral wall portion provided around the bottom surface portion, an outlet provided in a central portion of the bottom surface portion, a drain port which is the bottom surface portion and provided on the outer peripheral side of the outlet port, and the bottom surface portion And a casing having an inlet provided on the outer peripheral side of the drain port, a casing that engages with the peripheral wall portion and covers the bottom surface portion, a drain port and a filter that is stored in the casing An element, a support member for the filter element, and a filter valve body sandwiched between the support member and the bottom surface portion,
The filter valve body is a disk-shaped body having a hole, and is inserted into the opening on one end face side of the support member and elastically deformed to come into contact with the inner wall of the opening. A valve,
An annular drain valve portion that is connected to the pressure relief valve portion on the inner peripheral side and is provided so as to cover the drain port;
An inner peripheral side is connected to the drain valve portion, is provided so as to cover the inflow port, and is formed integrally from an annular check valve portion whose outer peripheral portion can be bent by elastic deformation. Oil filter to be used.
5. The above-mentioned base has a step or a protrusion between the inflow port and the drain port. Oil filter as described.
6). 3. A projection that partitions the drain valve portion and the check valve portion between the drain valve portion and the check valve portion. Or the valve body for a filter according to 5.
7). The said support member is provided with the flange part which can press the said drain port over the perimeter via the said drain valve part. Thru 6. The filter valve body according to any one of the above.

本フィルタ用弁体によれば、逆止弁部、圧力逃がし弁部及びドレン弁部とから構成されるため、弁体の部品点数を少なくすることができる。また、このフィルタ用弁体を用いたオイルフィルタの製造工程を簡略化することができるため、扱いやすく且つ安価なオイルフィルタを製造することができる。
孔が形成された円板状体であり、圧力逃がし弁部が一面側へ突出し、逆止弁部が他端面側に湾曲する場合は、支持部材に容易に挿着することができるため、取り扱いを容易にすることができる。
ドレン弁部が、支持部材の一端面を覆うように接して設けられている場合は、該一端面及び基部の間にドレン弁部を挟持することができ、ドレン口をより強固に閉塞することができるため、通常使用時におけるドレン口を介したオイル漏れを抑制することができる。
ドレン弁部及び逆止弁部の間に区画する突起が周設されている場合は、該突起が基部に押圧されることによってドレン弁部及び逆止弁部間がよりオイル漏れが起きにくいように区画することができる。
支持部材につば部が設けられている場合は、つば部と基部の間にドレン弁部を挟持することでドレン口を押圧して、より確実に閉塞することができるため、通常使用時におけるドレン口を介したオイル漏れを抑制することができる。 According to this filter valve body, since it is composed of a check valve portion, a pressure relief valve portion, and a drain valve portion, the number of parts of the valve body can be reduced. Moreover, since the manufacturing process of the oil filter using this filter valve body can be simplified, an oil filter that is easy to handle and inexpensive can be manufactured.
It is a disk-shaped body with holes formed, and when the pressure relief valve part protrudes to one side and the check valve part curves to the other side, it can be easily inserted into the support member. Can be made easier.
When the drain valve portion is provided so as to cover one end surface of the support member, the drain valve portion can be sandwiched between the one end surface and the base portion, and the drain port is more tightly closed. Therefore, it is possible to suppress oil leakage through the drain port during normal use.
When a projection is provided around the drain valve portion and the check valve portion, oil leakage between the drain valve portion and the check valve portion is less likely to occur by pressing the projection against the base portion. Can be partitioned.
When the support member is provided with a flange, the drain valve is pressed between the flange and the base so that the drain port can be pressed and closed more securely. Oil leakage through the mouth can be suppressed.

本発明のオイルフィルタによれば、ケーシングを基部から取り外す途中でドレン弁部がドレン口から離れてドレン回路が開通し、オイルがドレン回路を介してオイルフィルタ外に排出されるため、ドレンから確実に排出することができる。また、ケーシングと基部との間から漏れることなく、ドレン口から排出することができる。更に、フィルタ用弁体の部品点数を少なくすることができ、オイルフィルタの製造工程を簡略化することができるため、扱いやすく且つ安価なオイルフィルタを製造することができる。
ドレン弁部が、一端面及び基部の間に挟持されている場合は、ドレン弁部をより強固に閉塞することができるため、通常使用時におけるドレン口を介したオイル漏れを抑制することができる。 According to the oil filter of the present invention, the drain valve part is separated from the drain port while the casing is removed from the base part, the drain circuit is opened, and the oil is discharged out of the oil filter through the drain circuit. Can be discharged. Moreover, it can discharge from a drain port, without leaking from between a casing and a base. Furthermore, since the number of parts of the filter valve body can be reduced and the manufacturing process of the oil filter can be simplified, an oil filter that is easy to handle and inexpensive can be manufactured.
When the drain valve portion is sandwiched between the one end surface and the base portion, the drain valve portion can be closed more firmly, so that oil leakage through the drain port during normal use can be suppressed. .

以下、本発明のフィルタ用弁体及びそれを用いたオイルフィルタを詳細に説明する。
本オイルフィルタ１は、例えば図１に例示するように、底面部に流入口６１、流出口６２及びドレン口６３を具備する基部６と、基部６に嵌合され且つ流入口６１、流出口６２及びドレン口６３を覆うように設けられるケーシング５と、ケーシング５内に設けられる筒状のフィルタエレメント３と、フィルタエレメント３の内周側に嵌着され、且つその一端面に設けられた開口部４２を流入口６１に被せるように配置される筒状の支持部材４と、支持部材４及び基部６間に挟持されるフィルタ用弁体２と、支持部材４を基部６側へ押圧するエレメント固定部材７と、を備えることを特徴とする。 Hereinafter, the filter valve body and the oil filter using the same according to the present invention will be described in detail.
As illustrated in FIG. 1, for example, the oil filter 1 includes a base 6 having an inlet 61, an outlet 62, and a drain port 63 on the bottom surface, and is fitted to the base 6 and has an inlet 61, an outlet 62. And the casing 5 provided so as to cover the drain port 63, the cylindrical filter element 3 provided in the casing 5, and the opening provided on the inner peripheral side of the filter element 3 and provided on one end face thereof The cylindrical support member 4 disposed so as to cover the inlet 42, the filter valve body 2 sandwiched between the support member 4 and the base portion 6, and the element fixing for pressing the support member 4 toward the base portion 6 side. And a member 7.

上記「基部６」は、通常樹脂又は金属等で形成され、エンジン等の本体に固定される。
上記「流入口６１」、上記「流出口６２」及び上記「ドレン口６３」は、基部６の同一面に設けられる開口部である。尚、該「同一面」は段差の有無は問わず、平面及び曲面のいずれであってもよい。
流入口６１は、オイルがオイルフィルタ１内に流入するための開口部であり、オイルポンプ等のオイル供給源からのオイル経路に接続される。また、流入口６１は、基部６の外周側に任意の数だけ基部６の中心部を中心として周設される。
流出口６２は、オイルがオイルフィルタ１内から流出するための開口部であり、オイル供給先へのオイル経路に接続される。また、流出口６２は、基部６の中心部に任意の数だけ設けられる。更に、ハウジング内に突出するように筒部を形成してもよい。
ドレン口６３は、ケーシング５を基部６から外してフィルタエレメント３を脱着する際に、オイルフィルタ１内からオイルを排出するための開口部であり、エンジンのオイルパン等のオイル排出先への排出路に接続される。また、ドレン口６３は、基部６の中心部に位置する流出口６２と、外周に位置する流入口６１との間に位置するように設けられる。
また、流入口６１及びドレン口６３間の基部６は、図１に例示するように段差６４を形成してもよい。段差６４を形成した場合は、オイルの流入に伴って逆止弁部２３が弾性変形してもドレン弁部２２に応力が伝わりにくくなるため、ドレン弁部２２が弾性変形してドレン口６３が開口することを抑制することができる。更に、流入口６１及びドレン口６３間の基部６に、図９に例示するように突起６５を形成してもよい。突起６５によって段差６４と同様に逆止弁部２３が弾性変形してもドレン弁部２２に応力が伝わりにくくなるため、ドレン弁部２２が弾性変形してドレン口６３が開口することを抑制することができる。 The “base 6” is usually formed of resin or metal and is fixed to a main body of an engine or the like.
The “inlet 61”, the “outlet 62”, and the “drain port 63” are openings provided on the same surface of the base 6. The “same surface” may be a flat surface or a curved surface regardless of the presence or absence of a step.
The inflow port 61 is an opening through which oil flows into the oil filter 1 and is connected to an oil path from an oil supply source such as an oil pump. In addition, an arbitrary number of inflow ports 61 are provided around the center of the base 6 on the outer peripheral side of the base 6.
The outlet 62 is an opening through which oil flows out from the oil filter 1 and is connected to an oil path to the oil supply destination. Further, an arbitrary number of outflow ports 62 are provided in the central portion of the base portion 6. Furthermore, you may form a cylinder part so that it may protrude in a housing.
The drain port 63 is an opening for discharging oil from the oil filter 1 when the casing 5 is removed from the base 6 and the filter element 3 is detached, and is discharged to an oil discharge destination such as an oil pan of the engine. Connected to the road. Further, the drain port 63 is provided so as to be located between the outflow port 62 located at the center of the base 6 and the inflow port 61 located on the outer periphery.
Further, the base 6 between the inflow port 61 and the drain port 63 may form a step 64 as illustrated in FIG. When the step 64 is formed, even if the check valve portion 23 is elastically deformed with the inflow of oil, stress is hardly transmitted to the drain valve portion 22, so that the drain valve portion 22 is elastically deformed and the drain port 63 is opened. Opening can be suppressed. Further, a protrusion 65 may be formed on the base 6 between the inflow port 61 and the drain port 63 as illustrated in FIG. Even if the check valve portion 23 is elastically deformed by the protrusion 65 even if the check valve portion 64 is elastically deformed, stress is hardly transmitted to the drain valve portion 22, so that the drain valve portion 22 is elastically deformed and prevents the drain port 63 from opening. be able to.

上記「ケーシング５」は、通常樹脂又は金属等で形成されており、基部６の内周に設けられた雌ねじに螺合される雄ねじを有し、両者を螺合することでと組み合わせることによってフィルタ用弁体２、フィルタエレメント３、支持部材４及びエレメント固定部材７を納める。
上記「フィルタエレメント３」は、外周側から中心軸部へオイルを通過させることによって濾過するための部材であり、材質及び構造を特に限定しない。また、フィルタエレメント３は筒状体であるが、外周側と内周側の形状が相似であってもよいし異なっていてもよい。また、中心軸部の一端面が開口していればよく、他端面は開口してもよいし、閉じていてもよい。 The “casing 5” is usually formed of resin, metal, or the like, has a male screw that is screwed into a female screw provided on the inner periphery of the base 6, and is combined by screwing the two together. The valve body 2, the filter element 3, the support member 4, and the element fixing member 7 are accommodated.
The “filter element 3” is a member for filtering by allowing oil to pass from the outer peripheral side to the central shaft portion, and the material and structure are not particularly limited. Moreover, although the filter element 3 is a cylindrical body, the shape of an outer peripheral side and an inner peripheral side may be similar, or may differ. Moreover, the one end surface of a center axis | shaft part should just be opened, the other end surface may be opened and may be closed.

上記「支持部材４」は、フィルタエレメント３を支持するための部材であり、材質を特に限定しない。支持部材４は、フィルタエレメント３の中心軸部に挿入可能な形状である。また、フィルタエレメント３と接触する面は、複数の孔が設けられることによってフィルタエレメント３を通過したオイルが支持部材４の内周側に流入する構造を備える。更に、支持部材４の圧力逃がし弁部２１を挿着する一端側には逃がし孔４３を備え、流入口６１から高圧のオイルが流入したときに圧力逃がし弁部２１を介して流出口６２へ排出することができる。
上記「エレメント固定部材７」は、バネ及び多孔質体等からなる弾性体であり、一端が支持部材４に取り付けられ、他端がケーシング５に取り付けられることによって、支持部材４を基部６側に押圧し、フィルタ用弁体２、支持部材４及び基部６間の液密性を維持するための部材である。また、エレメント固定部材７は支持部材４の他端面（図１を参照。）の他、支持部材４の任意の位置に設けることができる。更に、エレメント固定部材７は支持部材４と一体に形成されていてもよい。 The “support member 4” is a member for supporting the filter element 3, and the material is not particularly limited. The support member 4 has a shape that can be inserted into the central shaft portion of the filter element 3. The surface that contacts the filter element 3 has a structure in which oil that has passed through the filter element 3 flows into the inner peripheral side of the support member 4 by providing a plurality of holes. Furthermore, a relief hole 43 is provided on one end side of the support member 4 where the pressure relief valve portion 21 is inserted, and when high-pressure oil flows from the inlet 61, the pressure relief valve portion 21 is discharged to the outlet 62 through the pressure relief valve portion 21. can do.
The “element fixing member 7” is an elastic body composed of a spring, a porous body, and the like, and one end is attached to the support member 4 and the other end is attached to the casing 5, thereby moving the support member 4 to the base 6 side. It is a member that presses and maintains liquid tightness among the filter valve body 2, the support member 4, and the base portion 6. Further, the element fixing member 7 can be provided at an arbitrary position of the support member 4 in addition to the other end surface of the support member 4 (see FIG. 1). Further, the element fixing member 7 may be formed integrally with the support member 4.

本フィルタ用弁体２は、例えば図１〜３に示すように環状であり、中心側から圧力逃がし弁部２１と、ドレン弁部２２と、逆止弁部２３とが環状に一体に形成されてなることを特徴とする。
また、圧力逃がし弁部２１は筒状であり、支持部材４の一端面側４１の筒部である開口部４２に挿入され且つ弾性変形によって該開口部４２の内壁と接触する。ドレン弁部２２は、内周側が圧力逃がし弁部２１と接続され且つ基部６のドレン口６３を覆うように設けられている。逆止弁部２３は、内周側がドレン弁部２２と接続され、流入口２１を覆うように設けられている。
本フィルタ用弁体は、弾性変形によって外周部が湾曲可能な樹脂又はエラストマー等の弾性体からなる。また、フィルタ用弁体は、例えば図２に示すように、中央部の圧力逃がし弁部２１の周りに、ドレン弁部２２及び逆止弁部２３がこの順に周設された形状を備え、一体成形により作製される。また、フィルタ用弁体は、板状体、特に圧力逃がし弁部２１が突出し、孔が形成された円板状体であることが好ましい。 The filter valve body 2 has an annular shape as shown in FIGS. 1 to 3, for example, and a pressure relief valve portion 21, a drain valve portion 22, and a check valve portion 23 are integrally formed in an annular shape from the center side. It is characterized by.
Further, the pressure relief valve portion 21 has a cylindrical shape, is inserted into the opening portion 42 that is the cylindrical portion on the one end surface side 41 of the support member 4, and contacts the inner wall of the opening portion 42 by elastic deformation. The drain valve portion 22 is provided so that the inner peripheral side is connected to the pressure relief valve portion 21 and covers the drain port 63 of the base portion 6. The check valve portion 23 is provided so that the inner peripheral side is connected to the drain valve portion 22 and covers the inflow port 21.
The filter valve body is made of an elastic body such as a resin or an elastomer whose outer peripheral portion can be bent by elastic deformation. Further, as shown in FIG. 2, for example, the filter valve body has a shape in which a drain valve portion 22 and a check valve portion 23 are provided in this order around a pressure relief valve portion 21 in the center portion, and are integrated. Made by molding. The filter valve body is preferably a plate-like body, particularly a disc-like body in which the pressure relief valve portion 21 protrudes and a hole is formed.

上記「圧力逃がし弁部２１」は、目詰まり等の理由によってオイルフィルタを通過する流量が減少し、エンジンの破損等をもたらさないようにしたり、フィルタエレメントが目詰まり等を起こして、所望のオイルの通過が困難となり、フィルタハウジング内のオイルが所定の圧力を超えるとき、圧力を緩和するためにバイパスしてオイルを通過させたりするために設けられている。また、濾過するオイルの圧力がフィルタエレメント等のオイルフィルタの構成部品を著しく変形したりする恐れがある所定圧力を超えないようにするために設けられる弁である。例えば図６に示すように、流入口６１から流入するオイルの圧力が所定圧力を超える場合、オイルの圧力によって支持部材４に設けられた口部を通過して逃がし弁部を中心側に弾性変形することによって、圧力逃がし弁部２１及び支持部材４の間に隙間を形成し、その隙間を介してオイルを低圧側の流出口６２へ流出させることによってフィルタハウジング内部の圧力が高まらないようにすることができる。
また、例えば図５に示すように、圧力逃がし弁部２１が支持部材４の開口部４２の内壁と接触するように配設されるため、フィルタ用弁体２は、圧力逃がし弁部２１及び開口部４２の内壁間の摩擦によって支持部材４と共に基部６から脱着することができる。 The above-mentioned “pressure relief valve portion 21” reduces the flow rate passing through the oil filter due to clogging or the like, and prevents the engine from being damaged or the like, or the filter element is clogged or the like. When the oil in the filter housing exceeds a predetermined pressure, it is provided to bypass the oil and allow the oil to pass therethrough when the oil in the filter housing exceeds a predetermined pressure. Further, the valve is provided so that the pressure of the oil to be filtered does not exceed a predetermined pressure that may significantly deform the components of the oil filter such as the filter element. For example, as shown in FIG. 6, when the pressure of the oil flowing in from the inlet 61 exceeds a predetermined pressure, the relief valve is elastically deformed to the center side through the mouth provided in the support member 4 by the pressure of the oil. By doing so, a gap is formed between the pressure relief valve portion 21 and the support member 4, and oil is allowed to flow out to the low-pressure side outlet 62 through the gap so that the pressure inside the filter housing does not increase. be able to.
For example, as shown in FIG. 5, the pressure relief valve portion 21 is disposed so as to come into contact with the inner wall of the opening portion 42 of the support member 4, so that the filter valve body 2 includes the pressure relief valve portion 21 and the opening. It can be detached from the base 6 together with the support member 4 by friction between the inner walls of the portion 42.

上記「ドレン弁部２２」は、オイルフィルタを使用している間は基部６に設けられるドレン口６３を覆うことによってドレン口６３へのオイルの侵入を阻止する。また、フィルタエレメント３を基部６から取り外すときに、フィルタ用弁体２は支持部材４と共にドレン口６３から離れるため、オイルフィルタ中のオイルはドレン口６３から所定の外部に排出され、オイルがオイルフィルタから意図しない流出を起こすことを抑制することができる。   The “drain valve portion 22” prevents oil from entering the drain port 63 by covering the drain port 63 provided in the base 6 while the oil filter is used. Further, when the filter element 3 is removed from the base portion 6, the filter valve body 2 is separated from the drain port 63 together with the support member 4, so that the oil in the oil filter is discharged from the drain port 63 to a predetermined outside, and the oil is oil It is possible to suppress unintentional outflow from the filter.

上記「逆止弁部２３」は、基部６の流入口６１からオイルの流入がないときに、オイルフィルタ内のオイルが流入口６１から流出しないように設けられている弁である。また、逆止弁部２３は外周側が薄くなるように形成された環状の弾性体であるため、例えば図４に例示するように外周側が弾性変形してフィルタハウジング内に湾曲し、オイルフィルタ内にオイルが流入するために必要な隙間を形成することができる。
更に、流入口６１からオイルが流入しない場合は、逆止弁部２３自体の弾性及びオイルフィルタ内のオイルの圧力によって、流入口６１の周縁に押しつけられるようにすることで流入口６１を塞ぎ、オイルが逆流することを抑制することができる。 The “check valve portion 23” is a valve provided so that oil in the oil filter does not flow out of the inflow port 61 when there is no inflow of oil from the inflow port 61 of the base 6. Further, since the check valve portion 23 is an annular elastic body formed so that the outer peripheral side becomes thin, for example, as shown in FIG. 4, the outer peripheral side is elastically deformed and curved in the filter housing, and in the oil filter. A gap necessary for the oil to flow in can be formed.
Furthermore, when the oil does not flow in from the inlet 61, the inlet 61 is closed by being pressed against the periphery of the inlet 61 by the elasticity of the check valve portion 23 itself and the oil pressure in the oil filter. The oil can be prevented from flowing backward.

尚、ドレン弁部２２は、圧力逃がし弁部２１及び逆止弁部２３の間に設けられており、圧力逃がし弁部２１及び逆止弁部２３と干渉してオイル漏れを起こす恐れがある位置であるが、圧力逃がし弁部２１とは弁の開口方向が異なり、且つ支持部材４が介在するため互いに影響を及ぼすことがない。また、逆止弁部２３とは、（１）支持部材４の一端面４１によって押圧する（例えば図１及び７を参照。）、（２）ドレン弁部２２及び逆止弁部２３間に各弁部を区画する区画突起２４をフィルタ用弁体２に設ける（例えば図８を参照。）、（３）ドレン弁部２２及び逆止弁部２３間に各弁部を区画する区画突起６５を基部６に設ける（例えば図９を参照。）、（４）基部６の流入口６１及びドレン口６３間に流入口６１が低位置となる段差６４を設ける（例えば図１を参照。）等を１種又は２種以上組み合わせて行うことによって、互いに影響を及ぼすことがない構成とすることができる。   The drain valve portion 22 is provided between the pressure relief valve portion 21 and the check valve portion 23, and a position where there is a risk of causing oil leakage due to interference with the pressure relief valve portion 21 and the check valve portion 23. However, since the opening direction of the valve is different from that of the pressure relief valve portion 21 and the support member 4 is interposed, they do not affect each other. The check valve portion 23 is (1) pressed by one end face 41 of the support member 4 (see, for example, FIGS. 1 and 7), and (2) each between the drain valve portion 22 and the check valve portion 23. A partition projection 24 that partitions the valve portion is provided on the filter valve body 2 (see, for example, FIG. 8). (3) A partition projection 65 that partitions each valve portion between the drain valve portion 22 and the check valve portion 23 is provided. Provided on the base 6 (see, for example, FIG. 9), (4) Provide a step 64 (see, for example, FIG. 1) between the inlet 61 and the drain port 63 of the base 6 so that the inlet 61 is at a low position. By carrying out 1 type or in combination of 2 or more types, it can be set as the structure which does not mutually influence.

以下、図面を用いて実施例により本発明のフィルタ用弁体及びそれを用いたオイルフィルタを具体的に説明する。
１．フィルタ用弁体及びそれを用いたオイルフィルタの構成
本オイルフィルタ１は略円柱形状であり、図１に示すように、フィルタ用弁体２、フィルタエレメント３、支持部材４、ケーシング５、基部６及びエレメント固定部材７を備える。
フィルタ用弁体２は図２及び３に示すように、ゴム製の中心に孔が形成された円板形状であり、該孔周辺に位置する筒状の圧力逃がし弁部２１、外周部に位置する環状の逆止弁部２３、並びに圧力逃がし弁部２１及び逆止弁部２３の間に位置する環状のドレン弁部２２を備える。また、フィルタ用弁体２は逆止弁部２３が内周側に配置されるように支持部材４の一端側開口部に挿着され、基部の流出口に突設された筒部の外周に配置される。
フィルタエレメント３は、図１に示すように、円筒形状であり中心に支持部材４が挿入固定される。また、フィルタエレメント３の側面と、支持部材４の接触面との間にはシール部材が設けられている（図示せず）。
支持部材４は円筒形状であり、外周面にフィルタエレメント３が設けられ、一端面４１のつば部４４及び開口部４２にフィルタ用弁体２が設けられ、他端面に係合部８１及びエレメント固定部材７が設けられる。 Hereinafter, the filter valve body of the present invention and the oil filter using the same will be described in detail with reference to the accompanying drawings.
1. 1. Filter valve body and oil filter configuration using the same The oil filter 1 has a substantially cylindrical shape, and as shown in FIG. 1, the filter valve body 2, the filter element 3, the support member 4, the casing 5, and the base 6 And an element fixing member 7.
As shown in FIGS. 2 and 3, the filter valve body 2 has a disk shape in which a hole is formed in the center made of rubber, a cylindrical pressure relief valve portion 21 located around the hole, and a position on the outer peripheral portion. And an annular drain valve portion 22 positioned between the pressure relief valve portion 21 and the check valve portion 23. Further, the filter valve body 2 is inserted into the opening on one end side of the support member 4 so that the check valve portion 23 is disposed on the inner peripheral side, and is provided on the outer periphery of the cylindrical portion protruding from the outlet of the base portion. Be placed.
As shown in FIG. 1, the filter element 3 has a cylindrical shape, and a support member 4 is inserted and fixed at the center. A seal member is provided between the side surface of the filter element 3 and the contact surface of the support member 4 (not shown).
The support member 4 has a cylindrical shape, the filter element 3 is provided on the outer peripheral surface, the filter valve body 2 is provided on the flange portion 44 and the opening 42 of the one end surface 41, and the engaging portion 81 and the element are fixed on the other end surface. A member 7 is provided.

ケーシング５はフィルタ用弁体２、フィルタエレメント３、支持部材４及びエレメント固定部材７を収納可能な大きさの、上壁部を具備する円筒形状であって、基部６にねじ込まれて固定される。また、天井には支持部材４の係合部８１と係合する係合部８２が設けられている。この係合部８１、８２は、ケーシング５が基部６に固定されているときは、係合が解かれ、エレメント固定部材７によって支持部材４を基部６に押し付けることができるが、ケーシング５を基部６から取り外すときは、エレメント固定部材７によって互いに係合する。
基部６は、他端をエンジン等に固定され（図示せず）、一端側に流入口６１、流出口６２、ドレン口６３を具備する底面部を備える。また、底面部は周縁部６６を備えケーシング５をはめ込んで固定することができる。
エレメント固定部材７は、金属のコイルバネからなり、一端をケーシング５に固定され、他端を支持部材４の他端面に固定される。 The casing 5 has a cylindrical shape with an upper wall portion that can accommodate the filter valve body 2, the filter element 3, the support member 4, and the element fixing member 7, and is fixed by being screwed into the base portion 6. . Moreover, the engaging part 82 engaged with the engaging part 81 of the support member 4 is provided on the ceiling. The engaging portions 81 and 82 are disengaged when the casing 5 is fixed to the base portion 6, and the support member 4 can be pressed against the base portion 6 by the element fixing member 7. When they are removed from the element 6, they are engaged with each other by the element fixing member 7.
The base 6 is fixed to the engine or the like at the other end (not shown), and includes a bottom surface portion including an inlet 61, an outlet 62, and a drain port 63 on one end side. Further, the bottom surface portion includes a peripheral edge portion 66, and the casing 5 can be fitted and fixed.
The element fixing member 7 is made of a metal coil spring, and has one end fixed to the casing 5 and the other end fixed to the other end surface of the support member 4.

２．未使用時のオイルフィルタ
オイルフィルタ１へオイルが供給されない場合は、図１に示すように、逆止弁部２３によってオイルの逆流が防止される。このため、次回のエンジン始動時に即座にオイルが供給されず、潤滑不良を起こす恐れはない。更に、ドレン弁部２２が、つば部４４で押圧されるドレン口６３により確実に閉塞され、ドレン口６３からオイルが排出されることがない。 2. Oil Filter When Not Used When oil is not supplied to the oil filter 1, as shown in FIG. 1, backflow of oil is prevented by the check valve portion 23. For this reason, oil is not supplied immediately at the next engine start, and there is no risk of poor lubrication. Further, the drain valve portion 22 is reliably closed by the drain port 63 pressed by the flange portion 44, and oil is not discharged from the drain port 63.

３．オイルの通常の流通
本オイルフィルタ１は、通常図４に示すように、流入口６１から流入するオイルが逆止弁部２３を弾性変形により湾曲になって生じた隙間からオイルフィルタ１内に流入し、次いでフィルタエレメント３及び支持部材４を通過して支持部材４内に流入し、その後流出口６２から流出する経路で使用される。また、ドレン弁部２２が、つば部４４で押圧されるドレン口６３により確実に閉塞され、ドレン口６３からオイルが排出されることがない。 3. Normal Oil Flow As shown in FIG. 4, the oil filter 1 normally flows into the oil filter 1 through a gap formed by the oil flowing in from the inflow port 61 being curved by the elastic deformation of the check valve portion 23. Then, it passes through the filter element 3 and the support member 4, flows into the support member 4, and then flows out from the outlet 62. Further, the drain valve portion 22 is reliably closed by the drain port 63 pressed by the flange portion 44, and oil is not discharged from the drain port 63.

４．フィルタエレメント３の脱着
本オイルフィルタ１のフィルタエレメント３を脱着する際は、ケーシング５をわずかに外した状態にする。このとき、ケーシング５の端部は、基部６の周縁部６６と接触しているため、ケーシング５及び基部６の境界からオイルが漏れ出ることがない。また、エレメント固定部材７に設けられた係合部８１がケーシング５の係合部８２と係合して、エレメント固定部材７が支持部材４及びフィルタ用弁体２を伴って動くため、フィルタ用弁体２及び基部６間に隙間が生じ、ドレン弁部２２によって塞がれていたドレン口６３が開口するため、オイルフィルタ１内のオイルはドレン口６３から排出される。
このため、オイルフィルタ１内のオイルがドレン口６３から排出し終わってから、ケーシング５を基部６から取り外すことによって、オイルが流出することがない。 4). Removal of filter element 3 When removing the filter element 3 of the oil filter 1, the casing 5 is slightly removed. At this time, since the end portion of the casing 5 is in contact with the peripheral edge portion 66 of the base portion 6, oil does not leak from the boundary between the casing 5 and the base portion 6. Further, since the engaging portion 81 provided on the element fixing member 7 engages with the engaging portion 82 of the casing 5 and the element fixing member 7 moves together with the support member 4 and the filter valve body 2, Since a gap is generated between the valve body 2 and the base portion 6 and the drain port 63 closed by the drain valve portion 22 opens, the oil in the oil filter 1 is discharged from the drain port 63.
For this reason, the oil does not flow out by removing the casing 5 from the base 6 after the oil in the oil filter 1 is completely discharged from the drain port 63.

５．高圧オイルの流入
フィルタエレメントの目詰まり等により、フィルタエレメントを通過するオイルの量が減少し、ハウジング内のオイル圧力が高くなった場合、その圧力によって圧力逃がし弁部２１が中心側へ弾性変形し、逃がし孔４３からオイルが流入し、流出口６２から流出することができる。このため、オイルフィルタ１を通過する流量が増加して、オイルの圧力が低下するためエンジンの破損等を抑制することができる。 5. Inflow of high-pressure oil When the amount of oil passing through the filter element decreases due to clogging of the filter element and the oil pressure in the housing increases, the pressure relief valve 21 is elastically deformed toward the center by the pressure. The oil can flow in from the escape hole 43 and flow out from the outflow port 62. For this reason, since the flow volume which passes the oil filter 1 increases and the pressure of oil falls, damage to an engine etc. can be suppressed.

本実施例のオイルフィルタの構成を説明するための模式断面図である。It is a schematic cross section for demonstrating the structure of the oil filter of a present Example. 本実施例のフィルタ用弁体の構成を説明するための模式斜視図である。It is a model perspective view for demonstrating the structure of the valve body for filters of a present Example. 本実施例のフィルタ用弁体の構成を説明するための模式断面図である。It is a schematic cross section for demonstrating the structure of the valve body for filters of a present Example. 本実施例のオイルフィルタの使用形態を説明するための模式断面図である。It is a schematic cross section for demonstrating the usage pattern of the oil filter of a present Example. 本実施例のオイルフィルタにおいて、フィルタエレメントの脱着を行う状態を説明するための模式断面図である。In the oil filter of a present Example, it is a schematic cross section for demonstrating the state which attaches / detaches a filter element. 本実施例のオイルフィルタにおいて、内部が高圧になった状態を説明するための模式断面図である。In the oil filter of a present Example, it is a schematic cross section for demonstrating the state to which the inside became a high voltage | pressure. 他の態様のオイルフィルタを説明するための模式断面図である。It is a schematic cross section for demonstrating the oil filter of another aspect. 他の態様のオイルフィルタを説明するための模式断面図である。It is a schematic cross section for demonstrating the oil filter of another aspect. 他の態様のオイルフィルタを説明するための模式断面図である。It is a schematic cross section for demonstrating the oil filter of another aspect.

符号の説明Explanation of symbols

１；オイルフィルタ、２；フィルタ用弁体、２１；圧力逃がし弁部、２２；ドレン弁部、２３；逆止弁部、２４、６５；区画突起、
３；フィルタエレメント、４；支持部材、４１；一端面、４２；開口部、４３；逃がし孔、４４；つば部、５；ケーシング、６；基部、６１；流入口、６２；流出口、６３；ドレン口、６４；段差、７；エレメント固定部材。 DESCRIPTION OF SYMBOLS 1; Oil filter, 2; Filter valve body, 21; Pressure relief valve part, 22; Drain valve part, 23; Check valve part, 24, 65;
3; filter element, 4; support member, 41; one end face, 42; opening, 43; escape hole, 44; collar, 5; casing, 6; base, 61; Drain port, 64; step, 7; element fixing member.

Claims (7)

フィルタエレメントを支持する筒状の支持部材と、基部の底面部との間に挟持されるように設けられるフィルタ用弁体であって、
上記基部は、該底面部の周囲に設けられる周壁部、該底面部の中心部に設けられる流出口、該底面部であり且つ該流出口の外周側に設けられているドレン口、及び該底面部であり且つ該ドレン口の外周側に設けられている流入口を具備し、
上記フィルタ用弁体は、該支持部材の一端面側の開口部に挿入され且つ弾性変形して該開口部の内壁と接触する筒状の圧力逃がし弁部と、
内周側が該圧力逃がし弁部と接続され且つ該ドレン口を覆うように設けられている環状のドレン弁部と、
内周側が該ドレン弁部と接続され、該流入口を覆うように設けられ、且つ弾性変形によって外周部が湾曲可能な環状の逆止弁部と、から一体に形成されてなることを特徴とするフィルタ用弁体。 A filter valve body provided to be sandwiched between a cylindrical support member that supports a filter element and a bottom surface portion of a base,
The base portion includes a peripheral wall portion provided around the bottom surface portion, an outflow port provided in a central portion of the bottom surface portion, a drain port which is the bottom surface portion and provided on the outer peripheral side of the outflow port, and the bottom surface And an inflow port provided on the outer peripheral side of the drain port,
The filter valve body is inserted into the opening on the one end surface side of the support member and is elastically deformed to contact the inner wall of the opening, and a cylindrical pressure relief valve portion;
An annular drain valve portion that is connected to the pressure relief valve portion on the inner peripheral side and is provided so as to cover the drain port;
An inner peripheral side is connected to the drain valve portion, is provided so as to cover the inflow port, and is formed integrally from an annular check valve portion whose outer peripheral portion can be bent by elastic deformation. Filter valve body. 上記フィルタ用弁体は、孔が形成された円板状体であり、該圧力逃がし弁部は該円板状体の一面側へ突出し且つ該孔周辺に位置し、該逆止弁部は該円板状体の他面側に湾曲する請求項１記載のフィルタ用弁体。   The filter valve body is a disk-like body having a hole formed therein, the pressure relief valve portion projects to one surface side of the disk-like body and is located around the hole, and the check valve portion is The valve body for a filter according to claim 1, wherein the valve body is curved toward the other surface side of the disk-shaped body. 上記ドレン弁部及び上記逆止弁部の間に該ドレン弁部及び該逆止弁部を区画する突起が周設されている請求項１又は２に記載のフィルタ用弁体。   The filter valve body according to claim 1 or 2, wherein a projection that partitions the drain valve portion and the check valve portion is provided between the drain valve portion and the check valve portion. 底面部、該底面部の周囲に設けられる周壁部、該底面部の中心部に設けられる流出口、該底面部であり且つ該流出口の外周側に設けられているドレン口、及び該底面部であり且つ該ドレン口の外周側に設けられている流入口を具備する基部と、該周壁部と係合して該底面部を覆うケーシングと、該ドレン口及び該ケーシング内に格納されるフィルタエレメントと、該フィルタエレメントの支持部材と、該支持部材及び該底面部の間に挟持されるフィルタ用弁体とを備え、
上記フィルタ用弁体は、孔が形成された円板状体であり、該支持部材の一端面側の開口部に挿入され且つ弾性変形して該開口部の内壁と接触する筒状の圧力逃がし弁部と、
内周側が該圧力逃がし弁部と接続され且つ該ドレン口を覆うように設けられている環状のドレン弁部と、
内周側が該ドレン弁部と接続され、該流入口を覆うように設けられ、且つ弾性変形によって外周部が湾曲可能な環状の逆止弁部と、から一体に形成されてなることを特徴とするオイルフィルタ。 A bottom surface portion, a peripheral wall portion provided around the bottom surface portion, an outlet provided in a central portion of the bottom surface portion, a drain port which is the bottom surface portion and provided on the outer peripheral side of the outlet port, and the bottom surface portion And a casing having an inlet provided on the outer peripheral side of the drain port, a casing that engages with the peripheral wall portion and covers the bottom surface portion, a drain port and a filter that is stored in the casing An element, a support member for the filter element, and a filter valve body sandwiched between the support member and the bottom surface portion,
The filter valve body is a disk-shaped body having a hole, and is inserted into the opening on one end face side of the support member and elastically deformed to come into contact with the inner wall of the opening. A valve,
An annular drain valve portion that is connected to the pressure relief valve portion on the inner peripheral side and is provided so as to cover the drain port;
An inner peripheral side is connected to the drain valve portion, is provided so as to cover the inflow port, and is formed integrally from an annular check valve portion whose outer peripheral portion can be bent by elastic deformation. Oil filter to be used. 上記基部は、流入口及びドレン口間に段差又は突起を有する請求項４記載のオイルフィルタ。   The oil filter according to claim 4, wherein the base has a step or a protrusion between the inflow port and the drain port. 上記ドレン弁部及び上記逆止弁部の間に該ドレン弁部及び該逆止弁部を区画する突起が周設されている請求項４又は５に記載のフィルタ用弁体。   The valve body for a filter according to claim 4 or 5, wherein a projection for partitioning the drain valve portion and the check valve portion is provided between the drain valve portion and the check valve portion. 上記支持部材は、上記ドレン弁部を介して上記ドレン口を全周にわたって押圧可能なつば部が設けられている請求項４乃至６のいずれか１項に記載のフィルタ用弁体。   7. The filter valve body according to claim 4, wherein the support member is provided with a flange portion capable of pressing the drain port over the entire circumference via the drain valve portion.
JP2007067464A 2007-03-15 2007-03-15 Oil filter Expired - Fee Related JP4830929B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200469697Y1 (en) 2012-10-19 2013-11-01 주식회사 엠알필트레이션 Oil filter
CN112594027A (en) * 2020-12-10 2021-04-02 王晨 Oil filter of automobile engine
CN114856755A (en) * 2022-05-06 2022-08-05 东风汽车集团股份有限公司 Oil cleaner and car
US11504656B2 (en) 2015-11-28 2022-11-22 Daimler Ag Oil filter and filter cartridge for an oil filter of a motor vehicle

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JPS61121911A (en) * 1984-11-19 1986-06-09 Kyowa Gas Chem Ind Co Ltd Manufacture of transparent laminated board
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KR200469697Y1 (en) 2012-10-19 2013-11-01 주식회사 엠알필트레이션 Oil filter
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CN112594027A (en) * 2020-12-10 2021-04-02 王晨 Oil filter of automobile engine
CN114856755A (en) * 2022-05-06 2022-08-05 东风汽车集团股份有限公司 Oil cleaner and car

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