JPH02126328U

JPH02126328U -

Info

Publication number: JPH02126328U
Application number: JP3535889U
Authority: JP
Priority date: 1989-03-28
Filing date: 1989-03-28
Publication date: 1990-10-18

Description

[Brief explanation of the drawing]

第１図および第２図はそれぞれこの考案に係る
リミツトスイツチの一例を示す一部破断正面図お
よび側面断面図、第３図は同リミツトスイツチの
要部の分解斜視図、第４図および第５図はそれぞ
れこの考案の他の実施例を示すリミツトスイツチ
の一部破断正面図および側面断面図、第６図は第
４図および第５図で示したものの要部の分解斜視
図、第７図はこの考案のさらに他の実施例を示す
リミツトスイツチの要部を示す分解斜視図、第８
図はこの考案の要部の変形構造を示す断面図、第
９図および第１０図はそれぞれ従来のリミツトス
イツチの一例を示す一部破断正面図および側面断
面図である。１……スイツチケース、２……基本スイツチ、
３……ヘツド、４……回転軸、７…操作レバー、
７ａ……基端部、７ａ……先端部、８……ローラ
、１４……平坦面部、１５……復帰プランジヤ、
１６……復帰コイルばね、１９，１９Ａ，１９Ｂ
……円板カム、２０……操作プランジヤ、３０，
４０，７０Ａ，７０Ｂ，８１Ａ，８１Ｂ……突部
、３１，４１，７２……弾性ストツパ手段。 1 and 2 are a partially cutaway front view and a side sectional view respectively showing an example of the limit switch according to this invention, FIG. 3 is an exploded perspective view of the main parts of the limit switch, and FIGS. 4 and 5 are A partially cutaway front view and a side sectional view of a limit switch showing other embodiments of this invention, FIG. 6 is an exploded perspective view of the main parts of the limit switch shown in FIGS. 4 and 5, and FIG. FIG. 8 is an exploded perspective view showing essential parts of a limit switch showing still another embodiment of
The figure is a sectional view showing a modified structure of the main part of this invention, and FIGS. 9 and 10 are a partially cutaway front view and a side sectional view, respectively, showing an example of a conventional limit switch. 1...Switch case, 2...Basic switch,
3...Head, 4...Rotary shaft, 7...Operation lever,
7a... Base end part, 7a... Tip part, 8... Roller, 14... Flat surface part, 15... Return plunger,
16...Return coil spring, 19, 19A, 19B
... Disk cam, 20 ... Operation plunger, 30,
40, 70A, 70B, 81A, 81B... protrusion, 31, 41, 72... elastic stopper means.

Claims

[Scope of utility model registration request]

A head supporting a rotating shaft is fixed to one end of the switch case containing the basic switch, and the base end of an operating lever with a roller supported at its tip to detect the object to be detected is fixed to the rotating shaft. A return coil spring that applies a spring force to the flat surface of the rotating shaft via a return plunger is disposed in the head, and the operating plunger for opening and closing the basic switch is operated in response to rotation of the operating lever. In a limit switch in which a driving disc cam is fixed to the rotating shaft, a protrusion is formed on the outer circumferential surface of the rotating shaft or the cam corresponding to the free position of the operating lever, and the protrusion is pressed when the operating lever returns. A limit switch characterized in that an elastic stopper means for braking is provided on the head side.