JPH022251B2 - - Google Patents
Info
- Publication number
- JPH022251B2 JPH022251B2 JP2909885A JP2909885A JPH022251B2 JP H022251 B2 JPH022251 B2 JP H022251B2 JP 2909885 A JP2909885 A JP 2909885A JP 2909885 A JP2909885 A JP 2909885A JP H022251 B2 JPH022251 B2 JP H022251B2
- Authority
- JP
- Japan
- Prior art keywords
- case body
- cylindrical
- case
- electrode
- opening
- 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
- 238000000034 method Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 239000003566 sealing material Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electronic Switches (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Description
【発明の詳細な説明】
(a) 産業上の利用分野
この発明は、円筒状電極を備えてなる静電容量
形近接スイツチのシール方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a method for sealing a capacitive proximity switch comprising a cylindrical electrode.
(b) 従来の技術
本発明者は、既に筒状ケースの外周面方向の物
体を検出するために円筒状電極を形設してなる静
電容量形近接スイツチを新規提案した。その概略
縦断面図を第１図に示し、概略横断面図を第２図
に示す。図において、筒状ケース本体１の肉部１
１にはケース本体１の上面側に開口部部１２ａ，
１３ａにて開口した円筒状有底溝１２，１３が同
心円状に形成されている。大径の溝１２には円筒
状の検出電極３が挿設され、小径の溝１３には同
じく円筒状の遮蔽電極４が挿設されている。これ
によつて検出電極３および遮蔽電極４は位置決め
される。ケース本体１の中央中空部１４には回路
部品を搭載したプリント基板５が中空部１４壁面
のガイドレール１５に沿つて挿設されている。検
出電極３および遮蔽電極４はそれぞれ導線（図示
せず）にてプリント基板５の所定の端子部（図示
せず）に接続されている。導線６はプリント基板
５からケース本体１の下面側導線引き出し口１６
を介して導出される出力信号および電源用の電線
ケーブルである。そしてケース本体１の上面はケ
ースヘツド２によつてケース本体１側の環状突起
１０とケースヘツド２側に環状凹溝２０との嵌合
によつて嵌着閉蓋される。このようにして構成さ
れた円筒状電極を有する静電容量形近接スイツチ
Ｓはケース本体１とケースヘツド２との嵌合部分
から電極部分に水あるいは油等が浸入し、このこ
とによる静電容量の変化から物体検出感度に変化
を来す虞れがあり、したがつて水分等の浸入防止
のためケース内部を充填材にてシールしておくの
が通常である。ところでこのシール方法は従来ケ
ース本体１の所定の部位に電極３，４およびプリ
ント基板５を挿設してケースヘツド２をケース本
体１に嵌着した後にケースヘツド２側を下にし導
線引き出し口１６から充填材を注入して行つてい
た。(b) Prior Art The present inventor has already proposed a new capacitive proximity switch in which a cylindrical electrode is formed in order to detect objects in the direction of the outer peripheral surface of a cylindrical case. A schematic vertical cross-sectional view thereof is shown in FIG. 1, and a schematic cross-sectional view is shown in FIG. 2. In the figure, the flesh part 1 of the cylindrical case body 1
1 has an opening 12a on the top side of the case body 1,
Cylindrical bottomed grooves 12 and 13 that are open at 13a are formed concentrically. A cylindrical detection electrode 3 is inserted into the large diameter groove 12, and a similarly cylindrical shielding electrode 4 is inserted into the small diameter groove 13. As a result, the detection electrode 3 and the shielding electrode 4 are positioned. A printed circuit board 5 on which circuit components are mounted is inserted into the central hollow part 14 of the case body 1 along guide rails 15 on the wall surface of the hollow part 14. The detection electrode 3 and the shielding electrode 4 are each connected to a predetermined terminal portion (not shown) of a printed circuit board 5 by a conductive wire (not shown). The conductor 6 is connected from the printed circuit board 5 to the lower conductor outlet 16 of the case body 1.
This is an electric wire cable for output signals and power derived through the The upper surface of the case body 1 is fitted and closed by the case head 2 by fitting the annular protrusion 10 on the case body 1 side and the annular groove 20 on the case head 2 side. In the capacitive proximity switch S having a cylindrical electrode constructed in this manner, water or oil may enter the electrode portion from the fitting portion between the case body 1 and the case head 2, and this may cause a decrease in capacitance. There is a risk that the object detection sensitivity will change due to this change, and therefore, the inside of the case is usually sealed with a filler to prevent moisture from entering. By the way, this sealing method conventionally involves inserting the electrodes 3, 4 and the printed circuit board 5 into predetermined parts of the case body 1, fitting the case head 2 into the case body 1, and then filling the case head 2 side down from the conductor outlet 16. They were injecting materials.
(c) 発明が解決しようとする問題点
上述したようなシール方法では、電極３，４を
挿設する溝１２，１３の底部１２ｂ，１３ｂあた
りに空気が残つてしまい、この影響により製品ご
とに物体検出の感度がばらつくという問題が生じ
ていた。(c) Problems to be solved by the invention In the above-described sealing method, air remains around the bottoms 12b and 13b of the grooves 12 and 13 in which the electrodes 3 and 4 are inserted, and due to this effect, each product A problem has arisen in which the sensitivity of object detection varies.
(d) 問題点を解決するための手段
この発明では、上記問題点を解決するためにシ
ール方法を次のように改善するようにした。(d) Means for solving the problems In the present invention, in order to solve the above problems, the sealing method is improved as follows.
すなわち、第１図および第２図で示した円筒状
電極を有する静電容量形近接スイツチＳにおい
て、ケース本体１の溝１２，１３にそれぞれ検出
電極３、遮蔽電極４を挿設し、その後にシリコン
あるいはエポキシ樹脂等の充填材M1を充填する。
次にケース本体１の中空部１４においてガイドレ
ール１５に沿つてプリント基板５を挿設し、ケー
スヘツド２をケース本体１上面に嵌着して閉蓋す
る。そしてケースヘツド２を下方に位置させた状
態で導線引き出し口１６から充填材M2を注入し
中空部１４を充填する。 That is, in the capacitive proximity switch S having the cylindrical electrode shown in FIGS. 1 and 2, the detection electrode 3 and the shielding electrode 4 are inserted into the grooves 12 and 13 of the case body 1, respectively, and Fill with filler M1 such as silicone or epoxy resin.
Next, the printed circuit board 5 is inserted into the hollow part 14 of the case body 1 along the guide rails 15, and the case head 2 is fitted onto the upper surface of the case body 1 and the lid is closed. Then, with the case head 2 positioned downward, the filler M 2 is injected from the conductor outlet 16 to fill the hollow portion 14 .
(e) 作用
上述のような充填材の注入処理では、最初の溝
１２，１３内に充填材M1を注入した段階で空気
は開口部１２ａ，１３ａ側より抜けるので、溝１
２，１３内での空気の残存は無くなる。そして中
空部１４への充填材M2の注入は充填材M1の固化
した後にケース本体１をケースヘツド２で閉蓋し
て行われ、溝１２，１３内への影響は無いものと
なる。(e) Effect In the filler injection process as described above, air escapes from the openings 12a and 13a at the stage when the filler M1 is injected into the first grooves 12 and 13.
There will be no remaining air within 2 and 13. The filling material M 2 is injected into the hollow portion 14 by closing the case body 1 with the case head 2 after the filling material M 1 has solidified, so that the insides of the grooves 12 and 13 are not affected.
(f) 発明の効果
この発明は、上述したように円筒状電極を挿設
した溝とプリント基板を挿設した中空部とを順に
シールすることにより、溝内に空気が残るのを防
止することができ、すなわち予め設定した感度を
適正に備えたこの種静電容量形近接スイツチを構
成することが可能となるもので、その効果は大な
るものである。(f) Effect of the Invention This invention prevents air from remaining in the groove by sequentially sealing the groove in which the cylindrical electrode is inserted and the hollow part in which the printed circuit board is inserted, as described above. In other words, it is possible to construct this type of capacitive proximity switch having an appropriate preset sensitivity, and the effect is great.
第１図はこの発明に係る円筒状電極を有する静
電容量形近接スイツチの概略縦断面図で、第２図
は同概略横断面図である。
１……ケース本体、２……ケースヘツド、３…
…検出電極、４……遮蔽電極、５……プリント基
板、１１……肉部、１２，１３……溝、１２ａ，
１３ａ……開口部、１２ｂ，１３ｂ……底部、１
４……中空部、１６……導線引き出し口。
FIG. 1 is a schematic longitudinal cross-sectional view of a capacitive proximity switch having a cylindrical electrode according to the present invention, and FIG. 2 is a schematic cross-sectional view thereof. 1...Case body, 2...Case head, 3...
...Detection electrode, 4...Shielding electrode, 5...Printed circuit board, 11...Meat part, 12, 13...Groove, 12a,
13a...opening, 12b, 13b...bottom, 1
4...Hollow part, 16...Conductor outlet.
Claims (1)
電容量形近接スイツチのシール方法。 (イ) 筒状ケース本体内部においてケース本体一端
面側に開口部を設けて形成した円筒状有底溝の
内部に円筒状電極の挿設後開口部より充填材を
注入してシールする第一工程 (ロ) ケース本体中空部に回路部品を搭載したプリ
ント基板の挿設後溝開口部を有するケース本体
端面側にケースヘツドを嵌着し閉蓋する第二工
程 (ハ) ケースヘツドに対向するケース本体端面側に
設けた導線引き出し口よりケース本体中空部に
充填材を注入してシールする第三工程。[Scope of Claims] 1. A method for sealing a capacitive proximity switch having a cylindrical electrode, comprising the following steps. (b) After inserting a cylindrical electrode into a cylindrical bottomed groove formed by providing an opening on one end surface of the cylindrical case body, a first sealing material is injected from the opening. Process (B) After inserting the printed circuit board with circuit components mounted in the hollow part of the case body, the second process of fitting the case head to the end face side of the case body having the groove opening and closing the lid (C) The case body facing the case head The third step is to inject filler into the hollow part of the case body through the lead wire outlet provided on the end face and seal it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2909885A JPS61188826A (en) | 1985-02-16 | 1985-02-16 | Sealing of electrostatic capacitance type proximity switch having cylindrical electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2909885A JPS61188826A (en) | 1985-02-16 | 1985-02-16 | Sealing of electrostatic capacitance type proximity switch having cylindrical electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61188826A JPS61188826A (en) | 1986-08-22 |
| JPH022251B2 true JPH022251B2 (en) | 1990-01-17 |
Family
ID=12266873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2909885A Granted JPS61188826A (en) | 1985-02-16 | 1985-02-16 | Sealing of electrostatic capacitance type proximity switch having cylindrical electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61188826A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2505135Y2 (en) * | 1991-07-12 | 1996-07-24 | 光洋電子工業株式会社 | Proximity switch |
| JPH0721869A (en) * | 1993-06-30 | 1995-01-24 | Masayoshi Hosokawa | Connecting method of switch |
-
1985
- 1985-02-16 JP JP2909885A patent/JPS61188826A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61188826A (en) | 1986-08-22 |
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