JPS6010031Y2 - Switch handle locking device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a handle locking device that is fitted to a tilting handle provided in a switch case in a switch.

Figures 1 to 5 show conventional switch handle locking devices. In Figures 1 and 2, when the switch handle angle is ON or OFF, the 01 character 02 locking device is shown. Shows the handle locking device in condition.

That is, in FIGS. 1 and 2, 1 is a switch case made of a molded insulator and protects the elements inside the device, 2 is a handle that protrudes outside the case and opens and closes the electrical circuit of the device, and 3 is a switch case that protects the elements inside the device. A lock cover (also shown in FIG. 8) is installed on the case, and reference numeral 4 designates an inclined hole provided in the lock cover.

In this way, in both the ON lock and OFF lock, by using the lock cover 3 with the head and tail reversed, the locking function in each case is achieved.

However, in general, ON, as shown in Figures 1 and 2,
It is extremely rare for the OFF handle angle to be at θ□02, and it is usually unbalanced, such as the 4th
There are many cases as shown in FIG.

In such a case, the angle θ of each inclined hole 4at4b
It is necessary to prepare two lock covers 3a and 3b with different angles 3 and θ4 and use them for ON lock and OFF lock, which has disadvantages such as being very complicated and expensive.

This idea was made in view of the above-mentioned drawbacks, and allows the handle locks of switches that have different operating angles for ON and OFF to be shared by one lock cover.

An embodiment of this invention will be described below with reference to FIGS. 6 to 9.

In the figure, 1 is the switch case, 2 is the handle, 3 is the lock cover, and 4 is the slanted hole, which is the same as above, but in the present invention, when the lock cover 3 is used, the switch case 1 is The opposing upper and lower wall surfaces 31 and 32 are formed with an inclination of a predetermined angle.

In other words, the X and Y lines of the wall surfaces 31 and 32 are not parallel like the conventional lock cover, and the ON,
It is configured to provide an angle θX sufficient to correct the difference in angle of the handle 2 when the handle 2 is turned off.

In this way, in the present invention, by forming the wall surfaces 31 and 32 of the lock cover 3 that are in contact with the switch case 1 at a predetermined angle, the lock cover 3 As shown in FIGS. 8 and 9, by separately installing the lock cover on the front and back sides, a simple and inexpensive lock cover that can be used in both cases is provided.

[Brief explanation of the drawing]

Figures 1 and 2 are cross-sectional side views of the main parts of a conventional switch handle locking device used in a switch whose operating angles are approximately equal during ON and OFF, and Figure 3 is only the lock cover. 4 and 5 are perspective views showing ON, OF
FIG. 6 is a cross-sectional side view of the main part of a conventional handle lock device used in switches with different F-operation angles;
FIG. 7 is a sectional side view of a main part showing an embodiment of the present invention, and FIGS. 8 and 9 are perspective views showing the lock cover in use. In the figure, 1 is the switch case, 2 is the handle, 3 is the lock cover, 31.32 is the upper and lower opposing surfaces of the lock cover,
4 is an inclined hole. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A switch case that protects the internal elements of the device, a handle that protrudes outside the case to open and close the electrical circuit of the device, and a lock cover that is installed on the case and has an inclined hole that is inserted into the handle. In the opening/closing device, the slope angle corresponding to the angle difference when the handle is turned ON and OFF is provided on both sides facing the case, and is used for the front and back to perform the locking function in each case. Handle locking device.