JPH0428027Y2 - - Google Patents
Info
- Publication number
- JPH0428027Y2 JPH0428027Y2 JP14247387U JP14247387U JPH0428027Y2 JP H0428027 Y2 JPH0428027 Y2 JP H0428027Y2 JP 14247387 U JP14247387 U JP 14247387U JP 14247387 U JP14247387 U JP 14247387U JP H0428027 Y2 JPH0428027 Y2 JP H0428027Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- insulating sheet
- sheet
- electrodes
- conductive film
- 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
- 238000001514 detection method Methods 0.000 description 7
- 239000012212 insulator Substances 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は、静電容量式レべルセンサーに内装さ
れる円筒状電極に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a cylindrical electrode installed in a capacitive level sensor.
液体、粉体、粒体などのレべルを静電容量方式
により検出するレべルセンサーでは、従来、一対
の電極を対向位置において絶縁体を介して各別に
設置しているため、電極が必然的に大きくなり、
部品点数も多くなつて、製造コストが嵩むという
欠点がある。
Conventionally, in level sensors that detect the level of liquids, powders, granules, etc. using a capacitance method, a pair of electrodes are installed separately at opposing positions with an insulator interposed between them. inevitably become larger,
The disadvantage is that the number of parts increases, which increases manufacturing costs.
本考案の目的は、部品点数が少なく簡潔でコン
パクトな電極構成により、静電容量式レべルセン
サーをローコストに製造することにある。
The purpose of the present invention is to manufacture a capacitive level sensor at low cost by using a simple and compact electrode structure with a small number of parts.
本考案に係る電極シートでは、導電性被膜から
なる一対の電極を絶縁性シートの表裏両面から対
向させ、これら電極より導出されて夫々絶縁性シ
ートの裏面の余部に形成される伸延部を有し、か
つ、絶縁性シートの表面の余部に導電性被膜から
なるシールド電極を形成せしめるよう、裏面の前
記伸延部と対向させた態様に絶縁性シートの表裏
にプリント配線を施してなる電極シートを用い、
その裏面を内側にして円筒状に曲成したのであ
る。
The electrode sheet according to the present invention has a pair of electrodes made of a conductive film facing each other from both the front and back sides of an insulating sheet, and has extension parts led out from these electrodes and formed in the remaining part of the back side of the insulating sheet. , and using an electrode sheet in which printed wiring is applied to the front and back sides of the insulating sheet in such a manner that it faces the extension part on the back side so that a shield electrode made of a conductive film is formed on the remaining part of the surface of the insulating sheet. ,
It was curved into a cylindrical shape with the back side inside.
実施例の図面において、１は絶縁性シート、２
ａはプリント配線によつて絶縁性シート１の表面
１ａに形成せられた導電性被膜からなる電極、２
ｂは該電極２ａと対向して絶縁性シート１の裏１
ｂにプリント配線によつて形成せられた導電性被
膜からなる電極であり、一端よりシート裏面１ｂ
の余部へ導出された伸延部２′ｂの端部をリード
線４ｂによつて別途検出回路３に接続するための
接続面２″ｂに形成する。２′ａは前記電極２ａの
一端より絶縁性シート１に穿設された導通孔５を
介してシート裏面１ｂの余部へ導出された伸延部
であり、前記伸延部２′ｂと平行状に形成せられ、
その導出端部をリード線４ａによつて別途検出回
路３に接続するための接続面２″ａに形成する。
２ｃはシート裏面１ｂの前記伸延部２′ａ，２′ｂ
と対向するようシート表面１ａの余部にプリント
配線により形成せられた導電性被膜からなるシー
ルド電極であつて、その端部にはリード線４ｃに
より別途検出回路３の回路アースに接続するため
の接続面２″ｃが形成されている。
In the drawings of the embodiment, 1 is an insulating sheet, 2
a is an electrode made of a conductive film formed on the surface 1a of the insulating sheet 1 by printed wiring; 2;
b is the back side 1 of the insulating sheet 1 facing the electrode 2a.
It is an electrode made of a conductive film formed by printed wiring on the back side of the sheet 1b from one end.
The end of the extended portion 2'b led out to the remainder of the electrode 2'b is formed on a connection surface 2''b for connecting to a separate detection circuit 3 via a lead wire 4b.2'a is insulated from one end of the electrode 2a. This is an extension part led out to the remaining part of the sheet back surface 1b through a conduction hole 5 bored in the elastic sheet 1, and is formed parallel to the extension part 2'b,
The lead-out end portion is formed on a connecting surface 2''a for connecting to a separate detection circuit 3 via a lead wire 4a.
2c is the extension portion 2'a, 2'b on the back surface 1b of the sheet.
It is a shield electrode made of a conductive film formed by printed wiring on the remaining part of the sheet surface 1a so as to face it, and the end thereof has a connection for connecting to the circuit ground of the detection circuit 3 separately by a lead wire 4c. A surface 2''c is formed.
このように絶縁性シート１の表裏にプリント配
線を施すことによつて、第１図および第３図Ａ，
Ｂに見られる電極シート１′をが形成されるので
あり、この電極シート１′の裏面を内側にして円
筒状に曲成すれば、第６図に見られるよう、内周
面１″ｂに一方の電極２ｂとその伸延部２′ｂおよ
び他方電極２ａの伸延部２′ａが配設されると共
に、外周面１″ａに他方の電極２ａおよびシール
ド電極２ｃが配設せられた本考案円筒状電極１″
が形成されることになる。 By providing printed wiring on the front and back sides of the insulating sheet 1 in this way,
The electrode sheet 1' shown in FIG. In the present invention, one electrode 2b and its extension part 2'b and the extension part 2'a of the other electrode 2a are arranged, and the other electrode 2a and a shield electrode 2c are arranged on the outer peripheral surface 1''a. Cylindrical electrode 1″
will be formed.
そして、該円筒状の本考案電極１″を例えば第
７図に示すよう筒状の絶縁体ケース６に内装し
て、電極２ａ，２ｂの伸延部２′ａ，２′ｂをリー
ド線４ａ，４ｂにより別途検出回路３に接続する
と共に、シールド電極２ｃをリード線４ｃにより
別途検出回路３の回路アースと接続させれば、静
電容量式のレべルセンサーが構成されることにな
る。 Then, the cylindrical electrode 1'' of the present invention is housed in a cylindrical insulator case 6, for example, as shown in FIG. 4b to the separate detection circuit 3, and the shield electrode 2c is separately connected to the circuit ground of the detection circuit 3 via the lead wire 4c, a capacitance type level sensor is constructed.
このような態様でシールド電極２ｃが設けられ
ることにより、電極２ａ，２ｂと検出回路３のグ
ランドもしくは大地間の静電容量の変化をシール
ドすることができ、電極２ａ，２ｂ間のみの静電
容量変化を検出することができる。従つて、絶縁
体ケース６の先端部付近、つまり電極２ａ，２ｂ
の内装されている範囲内にのみ感知部Ｓが形成せ
られ、シールド電極２ｃの存在する根部付近には
不感帯が形成されることになる。 By providing the shield electrode 2c in this manner, changes in capacitance between the electrodes 2a, 2b and the ground or ground of the detection circuit 3 can be shielded, and capacitance only between the electrodes 2a, 2b can be shielded. Changes can be detected. Therefore, near the tip of the insulator case 6, that is, the electrodes 2a, 2b
The sensing portion S is formed only within the interior area, and a dead zone is formed near the root where the shield electrode 2c is present.
本考案円筒状電極を使用すれば、従来よりも部
品点数が少なく簡潔でコンパクトな構成により、
ローコストな静電容量式レべルセンサーを生産し
得るという利点がある。そして、先端方向に一対
の電極が対設せられ、根部方向シールド電極が存
在するという電極配設態様が構成されることにな
つて、絶縁体ケースの根部付近には不感帯が形成
せられ、粉粒体の検出時において根部付近に付着
する粉粒体による悪影響を受けることなく、先端
部付近の感知部のみによる正確な検出効果が得ら
れることになるのである。
By using the cylindrical electrode of this invention, it has a simpler and more compact structure with fewer parts than before.
There is an advantage that a low-cost capacitive level sensor can be produced. As a result, a dead zone is formed near the root of the insulator case, and a dead zone is formed near the root of the insulator case. When detecting granules, an accurate detection effect can be obtained using only the sensing portion near the tip without being adversely affected by the granules adhering to the vicinity of the root.
第１図は本考案円筒状電極を構成する電極シー
トの一実施例における外形図であつて、Ａは表面
を示し、Ｂは裏面を示す。第２図は本考案円筒状
電極を構成する絶縁性シートの外形図であつて、
Ａは表面を示し、Ｂは裏面を示す。第３図は本考
案円筒状電極を構成する電極シートの他の実施例
における外形図であつて、Ａは表面を示し、Ｂは
裏面を示す。第４図は第１図ＡのＸ−Ｘ線におけ
る切断面の拡大図である。第５図は第１図ＡのＹ
−Ｙ線における切断面の拡大図である。第６図は
本考案円筒状電極の斜視図である。第７図は本考
案円筒状電極を内装させた静電容量式レべルセン
サーの要部縦断側面図である。第８図は第７図の
静電容量式レべルセンサーにおける電気接続図で
ある。
１……絶縁性シート、１ａ……シート表面、１
ｂ……シート裏面、２ａ，２ｂ……一対の電極、
２′ａ，２′ｂ……伸延部、２ｃ……シールド電
極。
FIG. 1 is an external view of one embodiment of the electrode sheet constituting the cylindrical electrode of the present invention, with A showing the front surface and B showing the back surface. FIG. 2 is an outline drawing of an insulating sheet constituting the cylindrical electrode of the present invention.
A indicates the front surface, and B indicates the back surface. FIG. 3 is an external view of another embodiment of the electrode sheet constituting the cylindrical electrode of the present invention, where A shows the front surface and B shows the back surface. FIG. 4 is an enlarged view of a cross section taken along line X--X in FIG. 1A. Figure 5 is Y in Figure 1 A.
It is an enlarged view of a cross section taken along the -Y line. FIG. 6 is a perspective view of the cylindrical electrode of the present invention. FIG. 7 is a vertical sectional side view of the main part of a capacitive level sensor incorporating a cylindrical electrode of the present invention. FIG. 8 is an electrical connection diagram of the capacitive level sensor of FIG. 7. 1... Insulating sheet, 1a... Sheet surface, 1
b... Back surface of the sheet, 2a, 2b... A pair of electrodes,
2'a, 2'b... Extension portion, 2c... Shield electrode.
Claims (1)
縁性シート１の表裏両面１ａ，１ｂから対向さ
せ、これら電極２ａ，２ｂより導出されて夫々絶
縁性シート１の裏面１ｂの余部に形成される伸延
部２′ａ，２′ｂを有し、かつ、絶縁性シート１の
表面１ａの余部に導電性被膜からなるシールド電
極２ｃを形成せしめるよう、裏面１ｂの前記伸延
部２′ａ，２′ｂを対向させた態様に絶縁性シート
１の表裏にプリント配線を施してなる電極シート
１′を用い、その裏面を内側にして円筒状に曲成
したことを特徴とする円筒状電極。 A pair of electrodes 2a, 2b made of a conductive film are opposed from the front and back surfaces 1a, 1b of the insulating sheet 1, and extensions are drawn out from these electrodes 2a, 2b and formed on the remaining portions of the back surface 1b of the insulating sheet 1, respectively. The extended portions 2'a, 2'b on the back surface 1b are formed so as to form the shield electrode 2c made of a conductive film on the remaining portion of the front surface 1a of the insulating sheet 1. This cylindrical electrode is characterized in that it uses an electrode sheet 1' formed by printing wiring on the front and back sides of an insulating sheet 1 in such a manner that the two sides face each other, and is bent into a cylindrical shape with the back side facing inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14247387U JPH0428027Y2 (en) | 1987-09-17 | 1987-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14247387U JPH0428027Y2 (en) | 1987-09-17 | 1987-09-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6446719U JPS6446719U (en) | 1989-03-22 |
| JPH0428027Y2 true JPH0428027Y2 (en) | 1992-07-07 |
Family
ID=31408459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14247387U Expired JPH0428027Y2 (en) | 1987-09-17 | 1987-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0428027Y2 (en) |
-
1987
- 1987-09-17 JP JP14247387U patent/JPH0428027Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6446719U (en) | 1989-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1361581A (en) | Capacitance humidity sensing element | |
| JPH01165457U (en) | ||
| JPH0428027Y2 (en) | ||
| JPH01163862U (en) | ||
| JP2542222B2 (en) | Electrode configuration of capacitance level sensor | |
| JP2660517B2 (en) | Capacitive level sensor | |
| US11813088B2 (en) | Grip | |
| CN218781748U (en) | Capacitance displacement sensor and flexible probe and flexible connecting wire thereof | |
| JPH01104556U (en) | ||
| JPH0514909U (en) | Capacitance type humidity sensor | |
| JPH0361563U (en) | ||
| JPS6138524U (en) | Liquid level detection device | |
| JPS6444424U (en) | ||
| JPH01137466U (en) | ||
| JPS59104006U (en) | displacement meter | |
| JPS6251058U (en) | ||
| JPS6093971U (en) | surface electrometer | |
| JPH027528U (en) | ||
| JPS6396423U (en) | ||
| JPH027529U (en) | ||
| JPH02140351U (en) | ||
| JPS6218599U (en) | ||
| JPS6444425U (en) | ||
| JPS63120152U (en) | ||
| JPS59180662U (en) | humidity sensor |