JPS582937U

JPS582937U - Limit switch rotation shaft over-rotation prevention device

Info

Publication number: JPS582937U
Application number: JP9777181U
Authority: JP
Inventors: 三品　昌実
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1981-06-30
Filing date: 1981-06-30
Publication date: 1983-01-10

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図ａ、　　ｂは夫々従来例を示す正面図及び側面図
、第２図ａ、　　ｂは夫々同上の表示板の回転軸への取
付状態を示す側面図、第３図ａ、　　ｂは夫々本考案の
一実施例のケーシングを示す正面図及び側面図、第４図
ａ、　　ｂは夫々同上のヘッドを示す正面図及び側面図
、第５図ロは同上に使用するキャップ−例を示す側面図
、同図すは同図ａのＡ−Ａ線断面図、同図Ｃは同上に使
用する回転軸の一例を示す正面図、同図ｄは同上に使用
する回転軸の一例を示す側面図、第６図ａ、　　ｂ、　
　ｃは夫々同上に使用するキャップと回転軸との嵌合状
態の他の例を示す左側面図、同図ａのＢ−Ｂ線断面図、
右側面画、第７図ａ−，ｂ、　　ｃは夫々同上に使用す
るキャップと回転軸との嵌合状態のさらに他の例を示す
左側面図、同図ａのＣ−Ｃ線断面図、右側　　　。面図であり、１はケーシング、２は回転軸、３は軸受筒
、４はキャップ、５は係止突起、６は係止リブ、７は表
示リブである。Figures 1a and b are respectively a front view and a side view showing a conventional example, Figures 2a and b are side views respectively showing how the above display board is attached to the rotating shaft, and Figures 3a and b are respectively a side view. A front view and a side view showing a casing of an embodiment of the present invention, FIGS. 4a and 4b are a front view and a side view showing the head of the same, respectively, and FIG. 5b is a side view showing an example of a cap used in the same. The figure is a cross-sectional view taken along the line A-A of figure a, figure C is a front view showing an example of the rotating shaft used in the above, and figure d is a side view showing an example of the rotating shaft used in the same. , Figure 6 a, b,
c is a left side view showing another example of the fitted state of the cap and the rotating shaft used in the above, and a sectional view taken along the line B-B in the same figure a;
The right side view, Figures 7a-, b, and c are left side views showing still other examples of the fitted state of the cap and rotating shaft used in the above, respectively, and the sectional view taken along the line C--C in Figure 7a. Right side. 1 is a top view, 1 is a casing, 2 is a rotating shaft, 3 is a bearing sleeve, 4 is a cap, 5 is a locking projection, 6 is a locking rib, and 7 is a display rib.

Claims

[Scope of utility model registration request]

This is an over-rotation prevention device for a rotating shaft in a limit switch in which the switch opens and closes in conjunction with the rotation of a rotating shaft whose one end protrudes from a casing. protrudes, and a cap that covers the tip of the bearing tube is fixed to the rotating shaft, and the cap rotates together with the rotating shaft, and is locked in a direction along the axis of the rotating shaft from a part of the opening edge of the cap. A locking rib is provided on the outer wall of the casing, and a locking rib is provided on the outer wall of the casing so that the locking protrusion comes into contact with the projection when the rotation shaft rotates by a predetermined angle, thereby preventing the rotation shaft from over-rotating. An over-rotation prevention device for a limit switch rotating shaft, in which an indicator rib is provided protruding along the circumferential surface of the bearing cylinder to indicate the range in which the switch can operate properly in accordance with the movement range of the locking protrusion.