JPS62178433U

JPS62178433U -

Info

Publication number: JPS62178433U
Application number: JP6728086U
Authority: JP
Priority date: 1986-05-02
Filing date: 1986-05-02
Publication date: 1987-11-12

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例による静電容量型
近接スイツチを示す断面図、第２図は近接スイツ
チ本体の前面に設けられるコネクタと検出ヘツド
との接続状態を示す図、第３図ａ，ｂ、第４図、
第５図ａ，ｂ、第６図ａ，ｂ及び第７図は検出ヘ
ツドの種々の形状を示す図であり、第８図ａは棒
状の検出ヘツドを示す斜視図、第８図ｂはこの検
出ヘツドを用いてタンク内の粉体を検出する状態
を示す図、第９図ａ，ｂは本考案の静電容量型近
接スイツチの第２の実施例による近接スイツチ本
体の斜視図及び要部断面図、第１０図ａ，ｂ，ｃ
は第２実施例の近接スイツチ本体に検出ヘツドを
取付けた状態を示す図、第１１図は従来の静電容
量型近接スイツチの一例を示す断面図である。１，１２……ケース、２，１７……主電極、３
，１８……補助電極、１６……コネクタ、１１ａ
〜１１ｇ，３３ａ，３３ｂ……検出ヘツド、２０
……プラグ、３２……ネジ溝、３４……ボルト。 FIG. 1 is a sectional view showing a capacitive proximity switch according to the first embodiment of the present invention, FIG. 2 is a view showing the connection state between the connector provided on the front surface of the proximity switch body and the detection head, and FIG. 3 a, b, Figure 4,
5a, b, 6a, b, and 7 are diagrams showing various shapes of the detection head. FIG. 8a is a perspective view showing a rod-shaped detection head, and FIG. Figures 9a and 9b are perspective views and essential parts of a proximity switch body according to a second embodiment of the capacitive proximity switch of the present invention. Cross-sectional view, Figure 10 a, b, c
1 is a diagram showing a state in which a detection head is attached to the proximity switch body of the second embodiment, and FIG. 11 is a sectional view showing an example of a conventional capacitive proximity switch. 1, 12... Case, 2, 17... Main electrode, 3
, 18... Auxiliary electrode, 16... Connector, 11a
~11g, 33a, 33b...detection head, 20
...Plug, 32...Thread groove, 34...Bolt.

Claims

[Claims for Utility Model Registration] (1) A capacitive proximity switch that detects nearby objects and has an oscillation circuit whose amplitude changes according to changes in capacitance between a detection electrode and the ground. A proximity switch body having a connection means with a detection electrode at one end and a detection circuit mounted thereon; and a detection head connected to the connection means of the proximity switch body and having an electrode formed thereon. Capacitive proximity switch. (2) The capacitive proximity switch according to claim 1, wherein the connection means for connecting the proximity switch main body and the detection head is a detachable connector. (3) The capacitive type according to claim 1 of the utility model registration, characterized in that a screw groove is provided as a connection means on the front surface of the proximity switch body, and the detection head portion is connected with a bolt. Proximity switch.