JP3834402B2 - Oil filter - Google Patents

Oil filter Download PDF

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Publication number
JP3834402B2
JP3834402B2 JP30841697A JP30841697A JP3834402B2 JP 3834402 B2 JP3834402 B2 JP 3834402B2 JP 30841697 A JP30841697 A JP 30841697A JP 30841697 A JP30841697 A JP 30841697A JP 3834402 B2 JP3834402 B2 JP 3834402B2
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Prior art keywords
housing
oil
valve body
valve
discharge passage
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JPH11137917A (en
Inventor
正典 西谷
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Tokyo Roki Co Ltd
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Tokyo Roki Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/153—Anti-leakage or anti-return valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/46—Several filtrate discharge conduits each connected to one filter element or group of filter elements

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

Description

【０００１】
【発明の属する技術分野】
この発明は、ハウジング内のフィルタエレメントを交換するとき、フィルタ内のオイルを排出するようにしたオイルフィルタに関する。
【０００２】
【従来の技術】
この種のオイルフィルタは、特公平６−１１３６９号公報に開示されていることからも知られている。この公報に開示されたオイルフィルタは、組み付けた状態で少なくとも近似的には縦型に構成されたフィルタハウジングと、前記ハウジング内に装着されたリング状のフィルタエレメントと、フィルタエレメントの周囲を流れ得る未浄化オイルのための流入口と、前記フィルタハウジングの下端部のソケットのところで前記フィルタハウジングの中央内部領域と接続されている浄化されたオイルのためのオイル流出口と、前記エレメントを抜き取ることにより、前記フィルタハウジングの流入空間と接続可能なフィルタハウジング下端部の排出路と、この排出路をフィルタハウジングに対して閉鎖する閉鎖手段とを備えている。
【０００３】
そして、前記排出路の閉鎖手段は、排出路内を軸方向に移動可能な弁体であり、この弁体は前記排出路の少なくとも１つの拡張部と協働して弁を構成し、かつ前記弁体が弱い第１ばねによって開き方向に付勢され、さらに前記弁体が強い第２ばねによって閉じ方向に付勢されるとともに、この第２ばねがフィルタハウジングへのエレメントの装着状態でこのエレメントの弁体側端面に支持された構成となっている。
【０００４】
しかしながら、実際には以下に説明する技術課題があった。
【０００５】
【発明が解決しようとする課題】
すなわち、上述の公報に開示されたオイルフィルタにあっては、フィルタエレメントをハウジングから抜き取るに際してハウジングを分離したとき、外気がハウジング内に容易に流入する手段をハウジングの分離部に含んでいないので、ハウジング内に外気が流入しにくく排出路からオイルがスムースに排出しない問題があり、また、弁体の構成がばねを２個使用するなどコストアップを招来する要因があるといった問題があった。
【０００６】
この発明は、以上の問題点を解決するものであって、ハウジングを分離したときに外気がハウジング内に容易に流入する手段を設けることにより、排出路からオイルがスムースに排出するようにするとともに、弁体開閉用のばねを１個にしてコストダウンを図ったオイルフィルタを提供することにある。
【０００７】
【課題を解決するための手段】
前記目的を達成するために、この発明は、エンジンへ組み付けた状態でほぼ縦型に構成されたフィルタハウジングと、前記ハウジング内に装着された筒状のエレメントと、該エレメントの外周部へオイルが流入する流入口と、該エレメントの内部から濾過されたオイルが流出する流出口と、前記ハウジングの外周部下端に連通する排出路と、前記ハウジングを上下に分離可能な分離部と、前記ハウジングの上部を分離して前記エレメントを出し入れすることにより前記排出路を開閉する開閉手段とを備えたオイルフィルタにおいて、前記開閉手段が前記排出路内を軸方向に移動可能な弁体を具備し、この弁体は、前記排出路の傾斜面と協働して閉弁する傾斜部と、該傾斜部の上部側に外周に沿って切欠部が形成された弁頭部と、を備えるとともに、前記弁頭部の上部に前記エレメント下部と接触する作動軸が突出して設けられており、さらに該弁体の下端の前記排出路内には該弁体を開弁方向に付勢するばねが具備される一方で、該弁体の上方の前記排出路内には前記作動軸の案内穴とオイル通路とを有する弁止部が具備されていて、前記ハウジングの上部を分離した際に、前記弁体が前記排出路内を上方に移動して前記傾斜部と前記傾斜面との間に間隙が形成され、該間隙が前記オイル通路および前記切欠部と連通して前記オイルが前記排出路内を流れて排出されるように構成したことを特徴とする。
また、この発明は、前記ハウジングの分離部にハウジングを分離したときに外気が該ハウジング内に容易に流入する手段を含んでなることが好ましい。
【０００８】
以上の構成によれば、オイルは弁止部のオイル通路を通過して、弁頭部の切欠部と弁受け部の間からスムースに戻通路に流れるので、オイルフィルタ内からオイルが漏れるのを防ぐことができる。しかも、弁体開閉用のばねを１個にしたので、コストダウンを図ることができる。
また、ハウジングの分離部に、ハウジングを分離したときに外気が該ハウジング内に容易に流入する手段を設けた場合には、外気がハウジング内に容易に流入し、排出路からオイルがよりスムースに排出されるようになる。
【０００９】
【発明の実施の形態】
以下、この発明の好適な実施の形態を図面を用いて詳細に説明する。図１はこの発明のオイルフィルタの組立て断面図、図４は同オイルフィルタのカバーを分離してフィルタエレメントを移動した図である。
【００１０】
図１に示されているように、オイルフィルタ１はエンジンにほぼ縦型に装着されるオイルフィルタで、２は上下に分離可能な分離部３を設けたハウジング、４はハウジングに対して着脱可能とされるエレメント、５はハウジング１内からオイルを排出する開閉弁体を示している。
【００１１】
ハウジング２は、上部にスプリング６を保持したスプリング保持部７と、エレメント４の上部を受ける円筒突部８と、エレメント４を保持する突起部９が内部円周に数箇所設けられパッキン１０が嵌合する嵌合溝１１を備え図３に示すように下端が開放された外周のネジ部１２の数箇所に軸方向に凹部を設け外気取入部１３とした筒型のカバー部１４と、オイルの入口穴１５と、中央に配置され内部にバイパス通路１６を有するエレメント４の保持筒１７を螺着するねじ部１８と、オイルの戻通路１９と、図２に拡大図で明示する戻通路１９に通ずる開閉弁体５のスプリング受け部２０と、閉止傾斜部２１と、上部に拡大部２２を有する弁受け部２３と、エレメント４で濾過されて清浄となったオイルがエンジンの潤滑部へ通ずる清浄路２４と、清浄路２４とエレメント４の外周側とを分離する分離壁２５と、上部開放端の上平面部２６と、外周にねじ部２７を設けた筒型のボディー部２８とを具備して構成されている。
【００１２】
分離部３は、前記カバー部１４のねじ部１２がボディー部２８のねじ部２７に螺着し、パッキン１０がボディー部２８の上平面部２６に押圧されてシールされることにより構成されている。
【００１３】
エレメント４は、上部エレメント２９と下部エレメント３０とが接続されて成っており、上部エレメント２９は、上部端板３１と下部端板３２との間に蛇腹折りされた円筒状の濾過材３３が穴明き内筒３４の周りに位置して接着保持されている。また、上部端板３１の中心には円形パッキン３５が装着されてカバー部１４の円筒突部８との間をシールし、汚れたオイルが漏れないようになっている。下部エレメント３０は、上部端板３６と下部端板３７との間に蛇腹折りされた円筒状の濾過材３８が穴明き内筒３９の周りに位置して接着保持されており、上部端板３５の中心に円形パッキン４０が装着されてエレメント４の保持筒１７との間をシールし、汚れたオイルが漏れないようになっている。下部端板３７の下部にはパッキン４１が接着され、スプリング６によって分離壁２５へ押圧シールしている。
【００１４】
開閉弁体５は、図２に示すように、開弁方向に付勢するがスプリング６よりも付勢力が弱いスプリング４２と、閉止傾斜部２１と協働して閉止するための傾斜部４３と、切欠部４４を有する弁頭部４５とを備え、弁頭部４５の上部に作動軸４６が突出して設けられ、弁頭部４５の上方に作動軸４６の案内穴４７とオイル通路４８とを有する弁止部４９が設けられて構成されている。
【００１５】
以上の構成において、エンジンから送られた汚れたオイルがオイルフィルタ１の入口穴１５からエレメント４の外周へ入り、上部エレメント２９で濾過される。清浄となったオイルは、中央のバイパス通路１６を通って直接オイルパン（図示しない）へ戻され、下部エレメント３０で濾過されて清浄となったオイルはエレメント４下部の清浄路２４からエンジンの潤滑部へ送られる。
【００１６】
このようにしてオイルフィルタ１の使用中は、図１および図２の拡大図に示すように、開閉弁体５の作動軸４６の上部が下部エレメント３０の下部端板３７に押され、スプリング４２よりスプリング６の方が付勢力が強いために閉止傾斜部２１に傾斜部４３が接触して閉鎖することにより戻通路１９へオイルが流れるのを阻止している。
【００１７】
エレメント４が使用限界になり、該エレメント４を交換するときは、オイルフィルタ１内のオイルを速やかに戻通路１９からオイルパン（図示しない）へ戻すことによりオイルがオイルフィルタ４から漏れないようにする必要がある。そこで、図４に示すように、ハウジング２の分離部３からカバー１４が離れると、エレメント４はカバー１４の突起部９に接触保持されていると同時に、円形パッキン３５がカバー部１４の円筒突部８に接触保持されていることから、カバー１４と共にエレメント４が上昇して、図５の拡大図に示すように、スプリング２０により閉止傾斜部２１から弁体５の傾斜部４３が離れて開弁すると同時に、ハウジング２の分離部３からカバー部１４のネジ部１２の外気取入部１３から外気が取り入れられ、これにより、オイルフィルタ１内のオイルが速やかに戻通路１９からオイルパンへ戻る。このとき、オイルは弁止部４９のオイル通路４８を通過して、弁頭部４５の切欠部４４と弁受け部２３の間からスムースに戻通路１９に流れるので、オイルフィルタ１内からオイルが漏れるのを防ぐことができる。
【００１８】
【発明の効果】
以上、実施の形態によって詳細に説明したように、この発明によるオイルフィルタにあっては、開閉弁体の作動軸の上部が下部エレメントの下部端板に押され、弁体のスプリングよりエレメントのスプリングの方が付勢力が強いため、閉止傾斜部に傾斜部が接触して閉鎖して戻通路へオイルが流れるのを阻止している。カバーがハウジングの分離部から離れると、エレメントはカバーの突起部に接触保持されていると同時にパッキンがカバー部の円筒突部に接触保持されることから、カバーと共にエレメントが上昇し、スプリングにより閉止傾斜部から弁体の傾斜部が離れて開弁すると同時に、ハウジングの分離部からカバー部のネジ部の外気取入部から外気が取り入れられ、これにより、オイルフィルタ内のオイルが速やかに戻通路からオイルパンへ戻る。このとき、オイルは弁止部のオイル通路を通過して、弁頭部の切欠部と弁受け部との間から戻通路へスムースに流れるので、オイルフィルタ内からオイルが漏れるのを防ぐことができる。
【００１９】
しかも、弁体開閉用のばねが１個で構成されているので、コストダウンを図ることができるといった効果もある。
【図面の簡単な説明】
【図１】この発明によるオイルフィルタの構造を示す断面図である。
【図２】 (a) は同オイルフィルタの弁体の拡大図である。
(b) は同オイルフィルタの弁体の頭部平面図である。
(c) は同オイルフィルタの弁体の弁止部平面図である。
【図３】 (a) は同オイルフィルタのカバーの一部断面図である。
(b) は同オイルフィルタのカバーの底面図である。
【図４】同オイルフィルタのカバーとエレメントの移動断面図である。
【図５】同オイルフィルタのカバーとエレメントの移動した弁体の拡大図である。
【符号の説明】
２ ハウジング
３ 分離部
４ エレメント
５ 開閉弁体
１３ 外気取入部
１６ 突出部
１９ 排出路
２０ ばね
２１ 傾斜面
４３ 傾斜部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an oil filter that discharges oil in a filter when a filter element in a housing is replaced.
[0002]
[Prior art]
This type of oil filter is also known because it is disclosed in Japanese Patent Publication No. 6-11369. The oil filter disclosed in this publication can flow around the filter element, a filter housing that is configured to be at least approximately vertical when assembled, a ring-shaped filter element mounted in the housing, and the filter element. By extracting the element, an inlet for unpurified oil, an oil outlet for purified oil connected to the central interior region of the filter housing at the lower end socket of the filter housing, and And a discharge passage at the lower end of the filter housing connectable to the inflow space of the filter housing, and a closing means for closing the discharge passage with respect to the filter housing.
[0003]
The discharge passage closing means is a valve body that is movable in the axial direction in the discharge passage, and the valve body forms a valve in cooperation with at least one expansion portion of the discharge passage, and The valve body is urged in the opening direction by a weak first spring, and the valve body is urged in the closing direction by a strong second spring, and the second spring is urged in the element mounted state in the filter housing. It is the structure supported by the valve body side end surface.
[0004]
However, there have actually been technical problems described below.
[0005]
[Problems to be solved by the invention]
That is, in the oil filter disclosed in the above-mentioned publication, when the housing is separated when removing the filter element from the housing, the housing separation part does not include means for allowing the outside air to easily flow into the housing. There is a problem that the outside air does not easily flow into the housing, and the oil does not smoothly discharge from the discharge path, and there is a problem that the structure of the valve body causes a cost increase such as the use of two springs.
[0006]
The present invention solves the above problems, and by providing means for allowing outside air to easily flow into the housing when the housing is separated, the oil is smoothly discharged from the discharge passage. Another object of the present invention is to provide an oil filter with a single valve element opening / closing spring for reducing the cost.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a filter housing configured in a substantially vertical shape in a state assembled to an engine, a cylindrical element mounted in the housing, and oil on an outer peripheral portion of the element. An inflow port, an outflow port through which filtered oil flows out from the inside of the element, a discharge path communicating with the lower end of the outer peripheral portion of the housing, a separation part capable of separating the housing up and down, In an oil filter comprising an opening / closing means for opening and closing the discharge path by separating the upper part and taking the element in and out, the opening / closing means includes a valve body movable in the discharge path in the axial direction. the valve body includes an inclined portion which closes in cooperation with the inclined surface of the discharge passage, and a valve head notch along the periphery on the upper side of the inclined portion is formed and provided with the door Further, an operating shaft that comes into contact with the lower portion of the element protrudes from the upper portion of the valve head, and further, a spring that biases the valve body in the valve opening direction in the discharge passage at the lower end of the valve body On the other hand, a valve stop having a guide hole and an oil passage of the operating shaft is provided in the discharge passage above the valve body, and when the upper part of the housing is separated, The valve body moves upward in the discharge passage to form a gap between the inclined portion and the inclined surface, and the gap communicates with the oil passage and the cutout portion so that the oil is supplied to the discharge passage. It is characterized by being configured to flow through the inside and be discharged .
In addition, the present invention preferably includes means for allowing outside air to easily flow into the housing when the housing is separated into the separating portion of the housing.
[0008]
According to the above configuration, the oil passes through the oil passage of the valve stop portion and smoothly flows into the return passage from between the notch portion of the valve head and the valve receiving portion, so that oil leaks from the inside of the oil filter. Can be prevented. In addition, since only one spring for opening and closing the valve body is used, the cost can be reduced.
In addition, when a means for allowing the outside air to easily flow into the housing when the housing is separated is provided in the separating portion of the housing, the outside air easily flows into the housing, and the oil is more smoothly discharged from the discharge path. It will be discharged.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an assembled cross-sectional view of the oil filter of the present invention, and FIG. 4 is a view in which the filter element is moved with the cover of the oil filter separated.
[0010]
As shown in FIG. 1, the oil filter 1 is an oil filter that is mounted almost vertically on the engine, 2 is a housing provided with a separating part 3 that can be separated vertically, and 4 is detachable from the housing. An element 5 is an open / close valve body that discharges oil from the housing 1.
[0011]
The housing 2 has a spring holding portion 7 holding an upper portion of a spring 6, a cylindrical protrusion 8 that receives the upper portion of the element 4, and protrusions 9 that hold the element 4 provided at several locations on the inner circumference. As shown in FIG. 3, a cylindrical cover portion 14 having a concave portion in the axial direction and having an outside air intake portion 13 provided in several places on the outer peripheral screw portion 12 having a lower end opened as shown in FIG. An inlet hole 15, a screw portion 18 for screwing the holding cylinder 17 of the element 4 disposed in the center and having a bypass passage 16 therein, an oil return passage 19, and a return passage 19 clearly shown in an enlarged view in FIG. The spring receiving portion 20 of the open / close valve body 5 that passes through, the closing inclined portion 21, the valve receiving portion 23 having the enlarged portion 22 at the upper portion, and the cleanliness through which the oil filtered and cleaned by the element 4 passes to the lubricating portion of the engine Road 24 The separation wall 25 that separates the clean path 24 from the outer peripheral side of the element 4, the upper flat portion 26 of the upper open end, and the cylindrical body portion 28 that is provided with a screw portion 27 on the outer periphery. ing.
[0012]
The separating portion 3 is configured by the screw portion 12 of the cover portion 14 being screwed to the screw portion 27 of the body portion 28 and the packing 10 being pressed against the upper flat portion 26 of the body portion 28 and sealed. .
[0013]
The element 4 is formed by connecting an upper element 29 and a lower element 30, and the upper element 29 has a cylindrical filter medium 33 that is bellows folded between an upper end plate 31 and a lower end plate 32. It is positioned around the bright inner cylinder 34 and held by bonding. In addition, a circular packing 35 is attached to the center of the upper end plate 31 so as to seal between the cylindrical protrusion 8 of the cover portion 14 so that dirty oil does not leak. The lower element 30 has a cylindrical filter material 38 that is accordion-folded between an upper end plate 36 and a lower end plate 37 and is bonded and held around a perforated inner cylinder 39. A circular packing 40 is mounted at the center of 35 to seal between the element 4 and the holding cylinder 17 so that dirty oil does not leak. A packing 41 is bonded to the lower portion of the lower end plate 37 and is pressed and sealed to the separation wall 25 by the spring 6.
[0014]
As shown in FIG. 2, the on-off valve body 5 is biased in the valve opening direction but has a biasing force weaker than that of the spring 6, and an inclined portion 43 for closing in cooperation with the closing inclined portion 21. And a valve head 45 having a notch 44, an operating shaft 46 is provided protruding above the valve head 45, and a guide hole 47 and an oil passage 48 of the operating shaft 46 are provided above the valve head 45. The valve stop part 49 which has is provided and comprised.
[0015]
In the above configuration, dirty oil sent from the engine enters the outer periphery of the element 4 through the inlet hole 15 of the oil filter 1 and is filtered by the upper element 29. The cleaned oil is returned directly to the oil pan (not shown) through the central bypass passage 16 and filtered by the lower element 30 to clean the oil from the clean path 24 below the element 4. Sent to the department.
[0016]
Thus, during use of the oil filter 1, as shown in the enlarged views of FIGS. 1 and 2, the upper portion of the operating shaft 46 of the on-off valve body 5 is pushed by the lower end plate 37 of the lower element 30, and the spring 42. Since the spring 6 has a stronger biasing force, the inclined portion 43 comes into contact with the closing inclined portion 21 and closes to prevent the oil from flowing into the return passage 19.
[0017]
When the element 4 reaches the service limit and the element 4 is replaced, the oil in the oil filter 1 is quickly returned from the return passage 19 to the oil pan (not shown) so that the oil does not leak from the oil filter 4. There is a need to. Therefore, as shown in FIG. 4, when the cover 14 is separated from the separation portion 3 of the housing 2, the element 4 is held in contact with the protrusion 9 of the cover 14 and at the same time, the circular packing 35 is connected to the cylindrical protrusion of the cover 14. Since the element 4 is lifted together with the cover 14 because it is held in contact with the portion 8, the inclined portion 43 of the valve body 5 is opened away from the closing inclined portion 21 by the spring 20, as shown in the enlarged view of FIG. At the same time, the outside air is taken in from the outside air intake 13 of the screw portion 12 of the cover portion 14 from the separating portion 3 of the housing 2, whereby the oil in the oil filter 1 quickly returns from the return passage 19 to the oil pan. At this time, the oil passes through the oil passage 48 of Bentome portion 49, the cutout portion 44 and the valve receiving portion flows through the passageway 19 back smoothly from between 23 Runode valve head 45, the oil from the oil filter within 1 Can be prevented from leaking.
[0018]
【The invention's effect】
As described above in detail according to the embodiment, in the oil filter according to the present invention, the upper part of the operating shaft of the on-off valve body is pushed by the lower end plate of the lower element, and the spring of the element from the spring of the valve body Since the urging force is stronger, the inclined portion comes into contact with the closing inclined portion and closes to prevent oil from flowing into the return passage. When the cover is separated from the separation part of the housing, the element is held in contact with the protrusion of the cover, and at the same time the packing is held in contact with the cylindrical protrusion of the cover. At the same time that the inclined part of the valve body is opened away from the inclined part, outside air is taken in from the outside air intake part of the screw part of the cover part from the separating part of the housing, so that the oil in the oil filter is quickly removed from the return passage. Return to the oil pan. At this time, the oil passes through the oil passage of the valve stop portion and smoothly flows from between the notch portion of the valve head and the valve receiving portion to the return passage, so that the oil can be prevented from leaking from the oil filter. it can.
[0019]
In addition, since the spring for opening and closing the valve body is composed of one piece, there is an effect that the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing the structure of an oil filter according to the present invention.
FIG. 2 (a) is an enlarged view of the valve body of the oil filter.
(b) is a top plan view of the valve body of the oil filter.
(c) is a plan view of a valve stop portion of the valve body of the oil filter.
FIG. 3A is a partial cross-sectional view of the cover of the oil filter.
(b) is a bottom view of the cover of the oil filter.
FIG. 4 is a moving sectional view of the cover and the element of the oil filter.
FIG. 5 is an enlarged view of a valve body in which a cover and an element of the oil filter are moved.
[Explanation of symbols]
2 Housing 3 Separating part 4 Element 5 Open / close valve body 13 Outside air intake part 16 Projecting part 19 Discharge path 20 Spring 21 Inclined surface 43 Inclined part

Claims (2)

エンジンへ組み付けた状態でほぼ縦型に構成されたフィルタハウジングと、前記ハウジング内に装着された筒状のエレメントと、該エレメントの外周部へオイルが流入する流入口と、該エレメントの内部から濾過されたオイルが流出する流出口と、前記ハウジングの外周部下端に連通する排出路と、前記ハウジングを上下に分離可能な分離部と、前記ハウジングの上部を分離して前記エレメントを出し入れすることにより前記排出路を開閉する開閉手段とを備えたオイルフィルタにおいて、
前記開閉手段が前記排出路内を軸方向に移動可能な弁体を具備し、
この弁体は、前記排出路の傾斜面と協働して閉弁する傾斜部と、該傾斜部の上部側に外周に沿って切欠部が形成された弁頭部と、を備えるとともに、前記弁頭部の上部に前記エレメント下部と接触する作動軸が突出して設けられており、
さらに該弁体の下端の前記排出路内には該弁体を開弁方向に付勢するばねが具備される一方で、該弁体の上方の前記排出路内には前記作動軸の案内穴とオイル通路とを有する弁止部が具備されていて、
前記ハウジングの上部を分離した際に、前記弁体が前記排出路内を上方に移動して前記傾斜部と前記傾斜面との間に間隙が形成され、該間隙が前記オイル通路および前記切欠部と連通して前記オイルが前記排出路内を流れて排出されるように構成したことを特徴とするオイルフィルタ。A filter housing configured in a substantially vertical shape when assembled to the engine, a cylindrical element mounted in the housing, an inflow port through which oil flows into the outer periphery of the element, and filtration from the inside of the element An outlet through which the oil flows out, a discharge passage communicating with the lower end of the outer peripheral portion of the housing, a separation portion capable of separating the housing up and down, and separating the upper portion of the housing to put in and out the element In an oil filter comprising opening and closing means for opening and closing the discharge path,
The opening / closing means comprises a valve body movable in the discharge passage in the axial direction;
The valve body includes an inclined portion that closes in cooperation with the inclined surface of the discharge passage , and a valve head having a notch portion formed along the outer periphery on the upper side of the inclined portion. An operating shaft that comes into contact with the lower part of the element protrudes from the upper part of the valve head,
Further, a spring for urging the valve body in the valve opening direction is provided in the discharge passage at the lower end of the valve body, while a guide hole of the operating shaft is provided in the discharge passage above the valve body. And a valve stop portion having an oil passage,
When the upper portion of the housing is separated, the valve body moves upward in the discharge path to form a gap between the inclined portion and the inclined surface, and the gap is formed between the oil passage and the notch portion. An oil filter characterized in that the oil flows in the discharge passage and is discharged in communication with the oil filter. 前記ハウジングの分離部にハウジングを分離したときに外気該ハウジング内に容易に流入する手段を含んでなる請求項１に記載のオイルフィルタ。  The oil filter according to claim 1, further comprising means for easily flowing outside air into the housing when the housing is separated into the separating portion of the housing.
JP30841697A 1997-11-11 1997-11-11 Oil filter Expired - Lifetime JP3834402B2 (en)

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KR100372452B1 (en) * 2000-12-23 2003-02-15 현대자동차주식회사 The oil drain structure of an automotive oil filter
DE10124463A1 (en) * 2001-05-19 2003-01-30 Mahle Filtersysteme Gmbh Device for separating contaminants from a lubricating oil of an internal combustion engine
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ITRE20030033A1 (en) * 2003-03-31 2004-10-01 Ufi Filters Spa "BASE FOR FILTER CARTRIDGE FOR INTERNAL COMBUSTION ENGINES"
KR20050032337A (en) 2003-10-01 2005-04-07 현대자동차주식회사 Oil filter assembly for internal combustion engine
JP4577199B2 (en) 2005-12-05 2010-11-10 トヨタ紡織株式会社 Fluid filter and method of using the same
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US11986753B2 (en) 2018-06-16 2024-05-21 Cummins Filtration Ip, Inc. Sealing systems and methods for a filtration system
US11931676B2 (en) 2020-08-14 2024-03-19 Cummins Filtration Inc. Sealing systems and methods for a filtration system

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