JP2013222564A - Overheat display plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overheat display plug which utilizes color change of a temperature-indicating agent to visually indicate, at an early stage, representative fire accidents originating from a plug, such as fire accidents caused by overheat due to tracking phenomena and fire accidents caused at a joint between a plug and a wiring by loosened screws and wiring contact failures.SOLUTION: The overheat display plug includes a temperature-indicating agent, whose color changes depending on temperature, applied to a surface cover of the plug, thereby visually predicting an overheat state by the color change upon abnormal overheating.

Description

The present invention relates to an overheat indicating plug for predicting fire of a plug.

A typical fire accident that occurs from an outlet is a fire caused by a tracking phenomenon. If you continue to use the product with the plug inserted into the outlet, dust will accumulate between the plugs and in the gaps, and this will continue for a long time to solidify with moisture, causing a short circuit between the electrodes and current flow. It is a phenomenon that ignites. There are many cases of accidents in homes, for example, frequent outlets such as refrigerator outlets and microwave oven outlets. Since the kitchen is humid, the dust collected in the outlet is solidified by the moisture, and the oil and fat generated by cooking adheres to the dust, increasing the flammability. To prevent the tracking phenomenon, periodically check the outlet and clean the dust and debris that has accumulated on the plug.
There is also known an invention in which energization is interrupted internally when the conductive portion of the plug generates heat. (Patent Document 1)

JP H8-264232 PR

There have been the following problems.
(B) The plug cover that is attached to the plug avoids air from entering and exiting the outlet, making it difficult to breathe, and moisture contained in the dust is less likely to evaporate, causing the plug to overheat, deform, and ignite. there were. (Flushing phenomenon)
(B) When the screw (4) inside the plug is loosened or the contact resistance of the connecting part between the plug blade (2) and the wiring (5) is increased, overheating, deformation and ignition may occur even without a tracking phenomenon. .
The present invention has been conceived to solve these problems.

If the cover of the plug is overheated with a temperature indicating agent, the portion will change color and try to predict the internal state.
The overheat display plug is characterized by the above.

The present invention is intended to notify the danger by discoloration of the temperature indicating agent before burning out overheating due to tracking phenomenon or poor contact inside the plug, and promptly replace parts to prevent the occurrence of fire.
The product has a simple structure and can be visually understood by changing its color. The purpose of this product is to spread it as a home appliance and to help prevent fires.

Perspective view of plug body Cross section inside the plug

Embodiments of the present invention will be described.
A temperature indicating agent (3) is attached around the cover of the plug body (1) at a place as shown in FIG.
As the temperature indicating agent, one that changes color at about 50 ° C. to 60 ° C. before the plug burns out is used.
As a method of using the present invention, when the plug is overheated and the temperature rises to about 60 ° C., the use is immediately stopped, the cause is investigated, the parts are replaced or cleaned as necessary, and a fire due to overheating is caused. In advance.

1 Plug body 2 Plug blade 3 Thermal indicator 4 Screw 5 Wiring

Claims (1)

  An overheat display plug characterized by predicting overheating due to tracking phenomenon or poor contact of plug blades due to discoloration of the temperature indicator when a temperature indicator is applied around the cover of the plug body.