JPS6116592Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circuit breaker with a plug, and more particularly to a circuit breaker with a plug that can be kept plugged into a power outlet.

Conventionally, circuit breakers with plugs can be used by simply plugging them directly into a power outlet, so they are extremely convenient because they do not require connection cords or troublesome connection work.

However, since the circuit breaker is simply held by the pressure bond between the plug and the power outlet, there is a problem in that the circuit breaker easily falls off.

On the other hand, in this type of circuit breaker, one has been proposed in which a terminal cover is attached to cover a load terminal connected to a load so that the terminal portion has a waterproof or dustproof structure. When attaching this terminal cover to the circuit breaker body by screwing it, there is a risk that the resin of the body may crack if the screw tightening force is too large. Therefore, it is possible to prevent resin cracking of the main body by fitting a reinforcing metal fitting into the main body and threading the end of the screw into the reinforcing metal fitting to reduce the tightening force.

The present invention was developed with this point in mind, and provides a circuit breaker with a plug that prevents it from falling off from a power outlet by extending one end of the reinforcing metal fitting and attaching this end to the mounting surface. The purpose is to

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.

In the drawing, 1 and 4 are a base and case made of synthetic resin, and this and the terminal cover 1 described below.
7 and a circuit breaker main body (hereinafter referred to as main body), which accommodates an appropriate interrupting mechanism and the like therein.

A plug 2, which is a power supply terminal, protrudes from the bottom surface of the base 1, and a recess 3 is provided. On the other hand, a reset button 5, a test button 6, and an operation indicator lamp 7 are exposed on the upper surface of the case 4 through a transparent packing 8, so that the upper surface of the case 4 is sealed. One end portion 11a of a fixture 11 made of a metal plate is fitted into the recess 3 of the base 1, and a fixing screw 9 is inserted into a hole 12 provided in this end portion 11a.
, and screw it onto the case 4 through the base 1.
By screwing one more fixing screw 10 into the case 4 through the base 1, the base 1, the case 4, and the fixture 11 are fixed integrally.
Two screw holes 13 and 14 are provided at both ends of the first mounting part 11a of the fixture 11, and the central part is bent into a step shape, and the second mounting part 11b is connected to the first mounting part 11a. The second mounting portion 11 is inclined at a predetermined angle away from the plane of the second mounting portion 11a.
Two mounting holes 15 and 16 are provided in b.

A terminal block portion 4a is integrally provided on one side of the case 4, and a terminal cover 17 made of synthetic resin is attached onto the terminal block portion 4a, thereby providing a waterproof structure. That is, the terminal cover 17 is placed so as to cover the load terminal (not shown) exposed on the terminal block portion 4a, and leads out the cord 18 connected to the load terminal to the outside via the conduit 19. At the same time, insert the mounting screws 20 and 21 through the insertion holes 22 and 23 into the screw holes 13 and 21 of the mounting tool 11, respectively.
The terminal cover 17 is attached by screwing onto the terminal cover 14. At this time, the fixing screw 9 of the case 4 and the mounting screw 2 of the terminal cover 17 are attached to the bottom surface of the base 1.
Although a tightening force of 0 and 21 is applied, since the tightening force is relaxed by the fixture 11, no local tightening force is applied to the base 1, and there is no fear of resin cracking.

Here, a method for attaching the plug-equipped circuit breaker having the above configuration to a power outlet will be explained.

First, insert the plug 2 into the power outlet 25 provided on the mounting surface 24 of the building, and while holding the main body by the crimping force of both, insert the wood screws 26 through the mounting holes 15 and 16 of the mounting tool 11. Mounting surface 2
Screw on 4. At this time, the other end 1 of the fixture 11
Since 1b is inclined with respect to the mounting surface 24,
As the wood screws 26 are tightened, a force is applied to the fixture 11 in the direction of the arrow in FIG. 3 using the tip of the second mounting portion 11b as a fulcrum, and this force presses the main body against the power outlet 25. Therefore, the main body does not fall off from the power outlet 25.
Strongly mounted.

As is clear from the above explanation, according to the present invention, the tips of the terminal cover mounting screws are screwed into the fixture, so no local tightening force is applied to the base of the main body, and the resin Problems such as cracks can be prevented, and by attaching the second attachment part, which is the other end of the attachment, to the attachment surface, it is possible to prevent the main body from falling off from the power outlet. Therefore, one fixture can have both the functions of preventing resin cracking of the main body and preventing the main body from falling off, and the main body can be easily and reliably mounted without increasing the number of parts.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of the circuit breaker with a plug according to the present invention, Figure 2 is an inside view of the fixture fixed to the main body of the circuit breaker with a plug, and Figure 3 is a portion showing the state of use. FIG. 3 is a cross-sectional side view. 1...Base, 2...Plug, 4...Case,
11... Mounting tool, 11a... First mounting part, 11b
...Second mounting part, 13, 14...Screw hole, 17...
...Terminal cover, 20, 21...Mounting screw, 24...
... Mounting surface, 25 ... Power outlet, 26 ...
wood screws

Claims (1)

[Scope of utility model registration request] A blocking mechanism is built into the base and case.
a circuit breaker body with a plug, the circuit breaker body having a plug on the back surface of a base to be inserted into a power outlet, the circuit breaker body having a terminal cover on a terminal block portion provided on the case to cover a load terminal of the breaking mechanism exposed from the case, the terminal cover being integrated with the terminal cover by means of mounting screws through holes provided on both sides of the terminal cover, the terminal block and the base; and a mounting fixture made of a metal plate, the mounting fixture being located on the back surface of the base and including a first mounting portion having screw holes corresponding to the two side holes respectively, and a second mounting portion having a mounting hole for mounting to a mounting surface including the power outlet, the free end of the second mounting portion being inclined away from the plane of the first mounting portion, the mounting fixture being attached to the circuit breaker body by screwing the mounting screws into the screw holes of the first mounting plate.