JPS642339U - - Google Patents
Info
- Publication number
- JPS642339U JPS642339U JP9776787U JP9776787U JPS642339U JP S642339 U JPS642339 U JP S642339U JP 9776787 U JP9776787 U JP 9776787U JP 9776787 U JP9776787 U JP 9776787U JP S642339 U JPS642339 U JP S642339U
- Authority
- JP
- Japan
- Prior art keywords
- detection coil
- coil
- proximity switch
- front surface
- external case
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Description
第１図は本考案の第１実施例による近接スイツ
チの断面図、第２図ａは本実施例の検出コイルを
一体成形したコイルケースを示す断面図、第２図
ｂはコイルケースの変形例を示す断面図、第３図
は第１実施例のコイルケースとポツトコアを示す
斜視図、第４図は本考案の第２実施例による近接
スイツチを示す断面図、第５図は従来の近接スイ
ツチの一例を示す断面図、第６図ａは従来の近接
スイツチの磁束を示す図、第６図ｂは本考案の第
１実施例による近接スイツチの磁束を示す図であ
り、第７図は共振回路のコンダクタンスの距離変
化率を示すグラフである。
１０，２１……コイルケース、１１……検出コ
イル、１２……ポツトコア、１３……外部ケース
、１４……検知回路部、１５……プリント基板、
１８……エポキシ樹脂、２０……磁性樹脂。
Fig. 1 is a sectional view of a proximity switch according to the first embodiment of the present invention, Fig. 2a is a sectional view showing a coil case in which the detection coil of this embodiment is integrally molded, and Fig. 2b is a modification of the coil case. 3 is a perspective view showing the coil case and pot core of the first embodiment, FIG. 4 is a sectional view showing the proximity switch according to the second embodiment of the present invention, and FIG. 5 is a diagram showing the conventional proximity switch. 6a is a diagram showing the magnetic flux of the conventional proximity switch, FIG. 6b is a diagram showing the magnetic flux of the proximity switch according to the first embodiment of the present invention, and FIG. 7 is a diagram showing the magnetic flux of the proximity switch according to the first embodiment of the present invention. It is a graph which shows the distance change rate of the conductance of a circuit. 10, 21...Coil case, 11...Detection coil, 12...Pot core, 13...External case, 14...Detection circuit section, 15...Printed circuit board,
18... Epoxy resin, 20... Magnetic resin.
Claims (1)
と、 前記検出コイルに設けられるコアと、 前記検出コイルを有する発振回路を含み発振出
力の変化によつて物体の近接を検出する検知回路
部と、を有する近接スイツチにおいて、 前記検出コイルは、前記外部ケースの前面に設
けられるコイルケース内に埋め込んで一体に形成
され、該コイルケースの裏面よりコアを取付けて
構成したことを特徴とする高周波発振型近接スイ
ツチ。[Claims for Utility Model Registration] An external case constituting a proximity switch, a detection coil attached to the front surface of the external case, a core provided in the detection coil, and an oscillation circuit including an oscillation circuit having the detection coil and generating an oscillation output. a detection circuit unit that detects the proximity of an object based on a change in the proximity switch, wherein the detection coil is embedded and integrally formed within a coil case provided on the front surface of the external case, and the detection coil is integrally formed within a coil case provided on the front surface of the external case; A high frequency oscillation type proximity switch characterized by a structure with a core attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9776787U JPS642339U (en) | 1987-06-24 | 1987-06-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9776787U JPS642339U (en) | 1987-06-24 | 1987-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS642339U true JPS642339U (en) | 1989-01-09 |
Family
ID=30965063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9776787U Pending JPS642339U (en) | 1987-06-24 | 1987-06-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS642339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08212890A (en) * | 1995-11-15 | 1996-08-20 | Omron Corp | High frequency oscillating type proximity switch |
-
1987
- 1987-06-24 JP JP9776787U patent/JPS642339U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08212890A (en) * | 1995-11-15 | 1996-08-20 | Omron Corp | High frequency oscillating type proximity switch |
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