JPH0425205Y2 - - Google Patents
Info
- Publication number
- JPH0425205Y2 JPH0425205Y2 JP18236787U JP18236787U JPH0425205Y2 JP H0425205 Y2 JPH0425205 Y2 JP H0425205Y2 JP 18236787 U JP18236787 U JP 18236787U JP 18236787 U JP18236787 U JP 18236787U JP H0425205 Y2 JPH0425205 Y2 JP H0425205Y2
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- porous inner
- electrode
- end plate
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000006866 deterioration Effects 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 8
- 239000010802 sludge Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000007516 Chrysanthemum Nutrition 0.000 description 1
- 244000189548 Chrysanthemum x morifolium Species 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案はオイル劣化センサを内蔵した濾過エ
レメントに関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a filter element incorporating an oil deterioration sensor.
（従来の技術）
例えば内燃機関のオイルの劣化を検出するのに
電極を向かい合わせた静電容量式のセンサが用い
られており、オイルの劣化による誘電率の変化を
検出して警報回路を作動させている。このような
センサは静電容量を上げるためできるだけ電極面
積を広く、二つの電極の間隔を挟めるようにして
いる。(Prior art) For example, a capacitive sensor with electrodes facing each other is used to detect oil deterioration in an internal combustion engine, and an alarm circuit is activated by detecting a change in dielectric constant due to oil deterioration. I'm letting you do it. In order to increase the capacitance of such a sensor, the electrode area is made as wide as possible so that the distance between the two electrodes can be sandwiched.
（考案が解決しようとする問題点）
上記のオイル劣化センサは通常オイルパン内に
設けられるがオイルパン内ではオイルの流動が少
ないため二つの電極の間にオイルスラツジが溜り
センサが不具合となるので、定期的に取り外して
清掃し、あるいは取替えなどをしなければならな
い。またオイルが流動するパイプは電極面積が不
足するのでセンサ取付個所として適当でない。(Problem that the invention aims to solve) The oil deterioration sensor described above is usually installed inside the oil pan, but since there is little oil flow inside the oil pan, oil sludge accumulates between the two electrodes, causing the sensor to malfunction. They must be removed, cleaned, or replaced periodically. In addition, a pipe through which oil flows is not suitable as a sensor mounting location because the electrode area is insufficient.
（問題点を解決するための手段）
金属製多孔内筒のまわりに環状濾過体を配設し
その上下端面に接着した濾過エレメントの多孔内
筒と一方の端板との間に少なくとも半径方向に弾
力を有する導電片を装着して多孔内筒を第１電極
とし、その内側に筒状の第２電極を配設してオイ
ル劣化センサを形成させ、第２電極はその上下端
をそれぞれ絶縁材を介して上下端板に固定した構
成のオイル劣化センサ付濾過エレメントである。(Means for solving the problem) An annular filter is arranged around a metal porous inner cylinder, and the filter element is bonded to the upper and lower end surfaces of the annular filter element. A resilient conductive piece is attached to the porous inner cylinder as the first electrode, and a cylindrical second electrode is arranged inside the porous inner cylinder to form an oil deterioration sensor. This is a filtration element with an oil deterioration sensor that is fixed to the upper and lower end plates via.
（作用）
このオイル劣化センサ付濾過エレメントはフイ
ルタケース内に収納され、前記一方の端板とフイ
ルタケース内面との間に縮設したスプリングで固
定され、第２電極からケース外へ引き出したリー
ド線とフイルタケースに接続されたリード線とが
警報回路に組み込まれて使用される。(Function) This filtration element with an oil deterioration sensor is housed in a filter case, fixed by a spring compressed between the one end plate and the inner surface of the filter case, and a lead wire drawn out from the second electrode to the outside of the case. and a lead wire connected to the filter case are incorporated into an alarm circuit.
第１電極は導電片、一方の端板、スプリング、
フイルタケーシングを経てリード線に通じ、第２
電極のリード線とで、センサが検出したオイルの
誘電率の変化にもとずく信号を警報回路に伝え
る。 The first electrode is a conductive piece, one end plate, a spring,
It passes through the filter casing to the lead wire and connects to the second
The electrode lead wire transmits a signal based on the change in the dielectric constant of the oil detected by the sensor to the alarm circuit.
この場合センサはオイルの流動路の途中にあ
り、しかも清浄側にあるから、電極間にスラツジ
が溜まることはない。またオイルフイルタすなわ
ちオイル流動管路の拡張室部分に置かれるから電
極面積も必要な広さを確保しうる。 In this case, the sensor is located in the middle of the oil flow path and on the clean side, so sludge does not accumulate between the electrodes. Further, since the electrode is placed in the expansion chamber of the oil filter, that is, the oil flow conduit, the necessary area of the electrode can be secured.
また、濾過エレメントは濾過体と端板との密着
をよくするため、濾過体の高さより多孔内筒の高
さをやや短かくしてあり多孔内筒と端板とは密着
していないが、この間は導電片で電気的に接続さ
れる。 In addition, in order to improve the close contact between the filter element and the end plate, the height of the porous inner tube is slightly shorter than the height of the filter element, and the porous inner tube and the end plate are not in close contact with each other. Electrically connected with a conductive piece.
（実施例）
第１図に実施例のオイル劣化センサ付濾過エレ
メント１を示す。金属製多孔内筒２のまわりに菊
花状にひだ折りした濾紙でなる環状濾過体３が配
設されその上下端面は接着剤層４ａ，４ｂによつ
て上端板５、下端板６に固着されている。多孔内
筒２は濾過体３よりわずかに高さが低い。上端板
５は多孔内筒２の上端より内方において段付状に
凹部５ａを形成しており、段付状の部分と多孔内
筒２上端との間に金属製で断面が逆Ｕ字状の導電
片７が弾力的に装着されている。逆電片７は円周
上に数個配設してもよく、リング状にして１個と
してもよい。下端板６には中央開口６ａが穿設さ
れる。多孔内筒２の内面に対向して多孔筒状の金
属製第２電極８が、上下端板５，６との間に介装
された絶縁材９ａ，９ｂによつて固定される。第
２電極８にはリード線１０が取付けられる。(Example) FIG. 1 shows a filter element 1 with an oil deterioration sensor according to an example. An annular filter body 3 made of filter paper folded into a chrysanthemum shape is arranged around a metal porous inner cylinder 2, and its upper and lower end surfaces are fixed to an upper end plate 5 and a lower end plate 6 by adhesive layers 4a and 4b. There is. The porous inner cylinder 2 is slightly lower in height than the filter body 3. The upper end plate 5 has a stepped recess 5a formed inwardly from the upper end of the porous inner tube 2, and a metal plate with an inverted U-shaped cross section is formed between the stepped portion and the upper end of the porous inner tube 2. A conductive piece 7 is elastically attached. Several countercurrent pieces 7 may be arranged on the circumference, or may be arranged in one ring shape. The lower end plate 6 is provided with a central opening 6a. A porous cylindrical metal second electrode 8 facing the inner surface of the porous inner cylinder 2 is fixed by insulating materials 9a and 9b interposed between the upper and lower end plates 5 and 6. A lead wire 10 is attached to the second electrode 8 .
この濾過エレメント１は第２図のようにフイル
タケーシング１１内に収納され、上端板５とフイ
ルタケーシング１１との間にスプリング１２が縮
設されてフイルタエレメント１を固定する。リー
ド線１０は絶縁されてフイルタケーシング１１を
貫通して取り出される。ケーシング１１にはリー
ド線１３が取付けられ、リード線１１，１３が第
１電極（多孔内筒）２と第２電極８とでなるオイ
ル劣化センサが検出した信号を警報器１４に伝え
る。 The filter element 1 is housed in a filter casing 11 as shown in FIG. 2, and a spring 12 is compressed between the upper end plate 5 and the filter casing 11 to fix the filter element 1. The lead wire 10 is insulated and passed through the filter casing 11 to be taken out. A lead wire 13 is attached to the casing 11, and the lead wires 11, 13 transmit a signal detected by an oil deterioration sensor consisting of a first electrode (porous inner cylinder) 2 and a second electrode 8 to an alarm 14.
（考案の効果）
この考案のオイル劣化センサ付濾過エレメント
はオイルの流動路中の拡張室部分に電極を設けた
ので、電極面積の必要広さが確保できスラツジの
付着もなく正常なセンサ機能を維持できる。また
導電片によつて多孔内筒と端板との導通ができる
から第１電極はリード線なしでフイルタケーシン
グまで導通させることができセンサの信号取り出
し手段が簡素化される。これらによりこのオイル
劣化センサ付濾過エレメントは機能が長く維持さ
れ、構造簡単である。(Effects of the invention) Since the filtration element with the oil deterioration sensor of this invention has electrodes installed in the expansion chamber of the oil flow path, the necessary electrode area can be secured and normal sensor function can be achieved without sludge adhesion. Can be maintained. Further, since the conductive piece allows electrical connection between the porous inner cylinder and the end plate, the first electrode can be electrically connected to the filter casing without a lead wire, thereby simplifying the signal extraction means of the sensor. As a result, this filter element with an oil deterioration sensor maintains its function for a long time and has a simple structure.
第１図はこの考案のオイル劣化センサ濾過エレ
メント、第２図はそれを収納したオイルフイルタ
の図である。
２……多孔内筒（第１電極）、３……濾過体、
５……上端板、６……下端板、７……導電片、８
……第２電極。
FIG. 1 is a diagram of the oil deterioration sensor filtration element of this invention, and FIG. 2 is a diagram of an oil filter containing the same. 2... Porous inner cylinder (first electrode), 3... Filter body,
5... Upper end plate, 6... Lower end plate, 7... Conductive piece, 8
...Second electrode.
Claims (1)
しその上下端面に上下端板を接着した濾過エレメ
ントにおいて、一方の端板と多孔内筒の間に導電
性材料でなり少なくとも半径方向に弾力を有する
導電片を装着し、前記多孔内筒の内面と対向して
筒状金属製の第２電極を配設しその上端と上端板
の間および下端と下端板の間にそれぞれ絶縁材を
介在させて固定し、前記多孔内筒を第１電極とし
て第１、第２電極でオイル劣化センサを形成した
ことを特徴とするオイル劣化センサ付濾過エレメ
ント。 In a filtration element in which an annular filter body is arranged around a metal porous inner cylinder and upper and lower end plates are bonded to the upper and lower end surfaces of the annular filter body, a conductive material is formed between one end plate and the porous inner cylinder, and at least in the radial direction. A conductive piece having elasticity is attached, a second electrode made of cylindrical metal is arranged facing the inner surface of the porous inner cylinder, and an insulating material is interposed between the upper end and the upper end plate and between the lower end and the lower end plate, respectively. A filtration element with an oil deterioration sensor, characterized in that the porous inner cylinder is used as a first electrode, and the first and second electrodes form an oil deterioration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18236787U JPH0425205Y2 (en) | 1987-11-30 | 1987-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18236787U JPH0425205Y2 (en) | 1987-11-30 | 1987-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0184711U JPH0184711U (en) | 1989-06-06 |
| JPH0425205Y2 true JPH0425205Y2 (en) | 1992-06-16 |
Family
ID=31473815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18236787U Expired JPH0425205Y2 (en) | 1987-11-30 | 1987-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0425205Y2 (en) |
-
1987
- 1987-11-30 JP JP18236787U patent/JPH0425205Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0184711U (en) | 1989-06-06 |
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