JP2013143204A - Plug insertion piece attachment tool for tracking prevention and warning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plug insertion piece attachment tool which can prevent intrusion of dust and moisture and can warn temperature rise at the plug part, as a countermeasure to tracking phenomenon at the connection of a power plug, is strong against contact damage, and discharges odor gradually upon detection.SOLUTION: The plug insertion piece attachment tool has a plug hole into which an insertion piece is inserted, and has an odor generator containing a substance generating odor when the temperature rises due to tracking in a microcapsule or a gel, in a first surface including the plug hole or a second surface extending from the plug hole. In order to prevent damage due to contact with the microcapsule or the gel, a contact prevention tool having a barrier is provided between the odor generator and the outside.

Description

The present invention relates to a plug insertion piece mounting tool for preventing and warning a tracking phenomenon occurring at a connection portion between a power plug and an outlet.

If the power plug that comes with the appliance has been connected to an outlet for many years, dust and moisture will adhere between the plug insert and the outlet, and current will flow between the plug insert and repeat spark discharge. It carbonizes, becomes conductive, and catches fire. This phenomenon is called a tracking phenomenon and leads to a fire accident.

As countermeasures against this tracking phenomenon, various product developments and inventions have been made. Products include caps that are attached to plug inserts, sheets that are attached to power strips and outlets to induce a current in the ground hole of the outlet during tracking, and to operate the breaker through the current from the ground hole to the breaker. As an invention, in Patent Document 1, a sticker with a fragrance attached between a plug and an outlet, and in Patent Document 2, an increase in temperature between plug part plugs or between outlet plugs is detected by a sensor, and an alarm is issued. Fire prevention devices that activate sound breakers have been proposed.
These products and inventions are designed to prevent dust and moisture from entering between the plug and the outlet, to prevent the tracking phenomenon, to warn by some means before firing due to the tracking phenomenon, and when the tracking phenomenon occurs, the breaker Three points are the points to prevent further damage progression by blocking.

However, although the tracking prevention product prevents dust and moisture from entering between the plug and the outlet, there is a problem that the accuracy is not perfect. For this reason, there are products that warn and prevent tracking phenomenon as a double measure, but tracking prevention products such as those that operate the breaker do not function unless the tracking phenomenon has progressed to a certain level. A mechanism is required to operate.
The invention of Patent Document 2 can be expected to be highly effective because it operates a breaker in addition to an alarm. However, it requires a sensor for detecting a temperature rise and a mechanism for issuing an alarm and operating the breaker. Absent.
The tracking prevention product for inducing current in the ground hole is simple without any special mechanism, but requires a ground hole in the outlet and cannot be used for other outlets.

And the invention of Patent Document 1 prevents moisture from entering between the plug and the outlet simply by sticking a seal, and when the temperature of the plug portion rises, the fragrance added to the base is heated into the air due to heat generation. It volatilizes and warns of danger, and it can realize both functions of prevention and warning although it is impossible to prevent the tracking phenomenon.
However, since the scent is completely volatilized immediately when the temperature of the plug portion rises, a case where the scent does not last when the person returns when the temperature rises while absent is expected. Further, it is expected that the fragrance is peeled off when the seal comes into contact with the outside, which is inconvenient.

JP 2000-77129 A JP2004-22172 JP 2001-301334 A Japanese Patent No. 3207256

"Application development of micro / nano-based capsules / fine particles" CMMC Publishing

An object of the present invention is to prevent dust and moisture from entering by attaching to the base of the plug insertion piece as a countermeasure against the tracking phenomenon that occurs at the connection portion between the power plug and the outlet. When the temperature of the plug portion rises to a certain level as a pre-stage of the phenomenon, the microcapsule arranged on the surface or the odorous substance in the gel is volatilized for a long time to warn of the temperature rise, and An object of the present invention is to provide an insulating plug insertion piece mounting tool comprising a contact preventing tool so that the microcapsule or gel is not damaged or peeled by contact with another object such as a hand.

The plug insertion piece for tracking prevention / warning of the present invention is an insulator such as polyvinyl chloride. By attaching it to the base of the power plug insertion piece, dust and moisture can enter between the plug and the outlet. Prevent the occurrence of tracking phenomenon. And the microcapsule or gel which encloses an odor substance and discharge | releases at high temperature is arrange | positioned on the surface. The means will be described below.
In order to generate a scent for a long time, a plurality of types of microcapsules that release odorous substances at different temperatures are used, and a time difference in odorous substance release is provided for each type of microcapsule or gel. Alternatively, by arranging microcapsules or gels at different distances from the plug mounting portion on the surface of the wearing tool, the odor substances are sequentially used by utilizing the temperature difference due to the distance difference from the power plug as a heat source. Volatilize. These methods may be used in combination. Furthermore, as a contact prevention device having a partition wall for preventing the microcapsule or gel from directly contacting other objects, a microcapsule or gel is placed on the surface of the wearing device, or an odor substance is placed. A coating film in which pores that can be passed are provided in advance or a coating film in which holes are opened at high temperatures is used, and microcapsules or gel is mixed and mixed with this, or covered with this. These depressions and coating films can also be used in combination.

The invention according to claim 1 is a plug insertion piece mounting tool for tracking prevention and warning,
It can be installed by inserting the plug of the power plug,
A plug hole portion formed of an insulator and having a plug hole for inserting the insertion piece is provided on a first surface including the plug hole portion or a second surface extending from the plug hole portion. ,
It has an odor generating part that has an odor substance in a microcapsule or gel to generate an odor due to a temperature rise by tracking,
In order to prevent damage from contact with the microcapsule or the gel, a contact preventer having a partition between the odor generating part and the outside is provided.

According to a second aspect of the present invention, there is provided the tracking prevention / warning plug insertion piece mounting device according to the first aspect, wherein the contact prevention device has the microcapsule or the surface on the first surface or the second surface. , Having a recess for inserting the gel, and the surface other than the recess is a recess with a narrow front width, or the first surface or The microcapsule disposed on the surface of the second surface or a coating film that covers the gel and serves as the partition wall,
The coating film has pores through which the smell of an odor substance can pass in advance, or the pores sealed with a sealing agent that changes at a high temperature so that the pores open at a desired temperature or higher. It is characterized in that at least one of the above is provided.

The invention according to claim 3 is the tracking prevention / warning plug insertion piece mounting device according to claim 1 or claim 2,
A plurality of types of the microcapsules or the gel that release the odorous substance at different temperatures are provided.

A fourth aspect of the present invention is the tracking prevention / warning plug insertion piece mounting tool according to the third aspect, wherein the odor is different for each type.

The invention according to claim 5 is the tracking prevention / warning plug insertion piece mounting tool according to any one of claims 1 to 4,
A plurality of the odor generating portions are provided at different distances from the plug hole portion, so that the odor substance is released at a plurality of different temperatures of the plug hole portion.

Since it is configured as described above, the tracking prevention / warning plug insertion piece mounting device of the present invention is attached to the base of the power plug insertion piece so that dust and moisture can enter between the plug and the outlet. Prevent / warn the occurrence of tracking phenomenon. In addition, since the timing of releasing the odorous substance from the microcapsules arranged on the surface or the gelling agent can be shifted, the odorous substance does not completely vaporize at a time and emits a scent for a long time. And as a tool for preventing contact of other objects such as microcapsules and gels on the surface of the wearing tool, a barrier against contact is made by making a depression, or a coating film in which pores are provided in advance or a hole at high temperature. By providing a coating film that opens or mixed with this, it is possible to avoid contact of external objects with the microcapsule or gel, and the microcapsule is difficult to break or peel. .
Therefore, the tracking prevention / warning plug mounting device of the present invention not only has a tracking phenomenon prevention function but also a high level warning function.

It is a figure which shows one embodiment of the plug insertion piece mounting tool for tracking prevention and warning by this invention. It is a figure which shows the plug mounting form of the plug insertion piece mounting tool for tracking prevention and warning by this invention. It is a figure which shows the usage condition which inserted the plug provided with the plug insertion piece mounting device for tracking prevention and warning by this invention in the outlet. It is a figure which shows the embodiment provided with the hollow in the surface of the plug insertion piece mounting tool for tracking prevention and warning by this invention. It is a figure which shows the state which has arrange | positioned the microcapsule or the gel in the hollow on the surface of the plug insertion piece mounting device for tracking prevention and warning by this invention. It is a figure which shows the state provided with the coating film which protects a microcapsule or gel on the surface of the plug insertion piece mounting tool for tracking prevention and warning by this invention.

The plug insertion piece mounting device for tracking prevention / warning of the present invention is formed of an insulator such as polyvinyl chloride resin, polyolefin resin, polyester resin, polypropylene resin, nylon resin, and is attached to the base of the power plug insertion piece. This prevents dust and moisture from entering the plug and the outlet and causing the tracking phenomenon. The odor generating part includes a microcapsule or gel that encloses the odor substance and releases it at a high temperature.
In order to generate a scent for a long time, use different types of microcapsules or gels that release odorous substances at different temperatures, and use different types of odorous substance release temperatures for each type, or Even with one kind of odor substance, a power plug that is a heat generation source is configured by arranging the odor generating part so that microcapsules or gels are arranged at different distances from the plug mounting portion on the surface of the mounting tool. By using the temperature difference due to the difference in distance from the insertion piece, the odorous substances are volatilized in order, so that it can be released slowly for a long time. These methods may be used in combination.
It is also possible to have a plurality of odorous substances with different odors.
Further, as a microcapsule or gel contact prevention device, a recess is provided on the surface of the wearing device, and a microcapsule or gel is placed therein to form a partition wall that stops contact with the surface other than the recess. Or a coating film in which pores through which an odorous substance can pass are provided in advance, or a coating film in which a hole is opened at a high temperature, and a microcapsule or a gel is mixed and mixed, or This is a partition wall that is covered with this to stop contact.
These depressions and coating films can also be used in combination.

FIG. 1 is a diagram showing an embodiment of a tracking prevention / warning plug insertion piece mounting device according to the present invention. The plug insertion piece mounting tool 101 for tracking prevention / warning is a cap type in 1-A, a card type in 1-B, and an L shape in 1-C, and each passes a plug of the power plug. There is a plug hole portion having a plug hole 102.
The 1-A cap type is a surface facing the outlet, and has a protruding surface portion 103 whose upper surface protrudes at a right angle from a plug surface 101A (first surface) having a plug hole 102, and is attached to the plug. In this case, the protruding surface portion 103 can cover the side where the plug insertion piece is present. In the example of 1-A, it is a figure which has the protrusion surface part 103 which covers a side surface and a lower surface other than an upper surface.
In the 1-B card type, it is a surface facing the outlet, only the plug surface 101A having the plug hole 102, and having no protruding surface portion.
In 1-A and 1-B, the plug hole 102 is opened in one plug surface 101A.
1-C is an L-shaped one that is attached to each plug piece of each plug, and one end is a plug hole portion having a plug hole 102, which is a long piece (second surface). ) Extends from there.
In any example, the odor substance is included in the whole or part of the odor generating part.
In any type, the plug insertion piece mounting tool 101 for tracking prevention / warning is firmly inserted to the root of the plug insertion piece.

FIG. 2 is a view showing a plug mounting form of the tracking prevention / warning plug insertion piece mounting tool according to the present invention. Reference numerals 2-A, 2-B, and 2-C indicate the state where the tracking prevention / warning plug insertion piece mounting tool 101 in 1-A, 1-B, and 1-C is mounted on the power plug.
The power plug has a body 201, a plug insertion piece 202, and a power cord 203, and the tracking prevention / warning plug insertion piece mounting tool 101 is firmly inserted to the base of the plug insertion piece 202.

FIG. 3 is a view showing a usage form in which a plug provided with a tracking prevention / warning plug insertion piece fitting according to the present invention is inserted into an outlet.
3-A, 3-B, and 3-C are usage forms using the tracking prevention / warning plug mounting tool 101 in 1-A, 1-B, and 1-C, respectively.
A power plug is inserted into the plug insertion port 302 on the outlet cover 301. In this figure, it is assumed that the outlet is attached to the wall, but of course it can also be used for a power strip.
When the plug portion generates heat, the microcapsule or gel installed on the surface of the tracking prevention / warning plug insertion piece mounting tool 101 releases the odorous substance 303.
As the odor substance 303 included in the microcapsule or gel, a substance that is solid / liquid at room temperature and releases a scented gas at a high temperature or a scented gas itself is used. Specific examples of the solid / liquid may be those that emit a pleasant scent such as perfumes or essential oils, or those that are harmless to the human body but emit strong odors and odors such as garlic. What is necessary is just to use what was extracted from the said solid and liquid as scented gas. When a plurality of types of microcapsules having different odor substance release temperatures are used, it is convenient to use various combinations of odor substances 303. For example, if the odorous substance 303 released at a low temperature emits a sweet scent and the odorous substance 303 released at a high temperature emits a bad odor, the progress of the tracking phenomenon can be easily understood. In addition, gelling agents such as waxes and amino acid derivatives can be used as in the case of the microcapsules. Since the gelling agent and the volatile chemicals that become odorous are described in detail in JP-A-2002-306584, they can be referred to.
There are many odorous substances such as aromatic compounds, terpenes, and esters.
In order to discover tracking at an initial stage when it is slightly heated, it is preferable that the volatilization temperature is about 50 to 80 ° C.
There are many types of microcapsules such as a coacervation method using gelatin. However, since they are described in JP-A-9-208488 and JP-A-9-77669, they can be referred to.

FIG. 4 is a view showing an embodiment in which a recess is provided on the surface of the tracking prevention / warning plug insertion piece mounting device according to the present invention.
A depression 401 is provided on the surface of the tracking prevention / warning plug insertion piece mounting tool 101, and a microcapsule or gel containing an odor substance is placed in the depression 401.
Due to the formation of the depression, the peripheral surface other than the depression forms a partition wall. This is because, when another object tries to come into contact, it does not come into contact with the microcapsule or gel that is stopped and encapsulated on the peripheral surface other than the depression.
If the recess 401 has a circular shape with different radii centered on the plug hole 102 as in 4-A, the distance from the plug hole 102 is the same at any point on the same recess 401. Further, when the lateral width of the tracking prevention / warning plug insertion piece mounting tool 101 is short as in 4-B, a plurality of linear depressions 401 can be arranged from the plug hole 102 at appropriate intervals. For example, the width and depth of the depression 401 may be set so that the finger does not touch the microcapsule or gel placed inside even if the surface is touched with the finger.
Each of the dents 401 has a temperature value or a sign as a measure of how much the temperature of the power plug rises and the microcapsules or gel that are disposed in the dent 401 release the odorous substance 303. If it is displayed, it is still easy to understand. As a means for displaying, a method of engraving a temperature value in advance, a method of using a pigment to raise the temperature value at a high temperature, and the like can be considered.

FIG. 5 is a view showing a state in which microcapsules or gels are arranged in the depressions on the surface of the plug insertion piece for tracking prevention / warning according to the present invention.
5-A and 5-B are cross-sectional views of the depression 401 of the plug insertion piece mounting tool 101 for tracking prevention / warning. When only one type of microcapsule or gel 501 is used, 5-A for multiple types The case where it has occurred is represented by 5-B. In 5-B, each type of microcapsule or gel 501 is indicated by a circle, triangle, or star.
There are a plurality of methods for realizing microcapsules having different odor substance release temperatures and different odors, and three examples are given below.

The first point is a method using thermoresponsive microcapsules. Thermally responsive microcapsules are those in which the capsule wall melts and breaks at high temperatures, or the odorous substance adsorption / capture characteristics of the capsule walls decrease at high temperatures, resulting in loss of the capsule wall material preservability. By selecting capsule wall materials having different temperatures, odorous substances can be volatilized at various temperatures. As the wall material for microcapsules, polymer materials are generally used. Specifically, paraffin, gelatin, polyurethane / urea, urea / formalin, melamine / formalin, and other common polymer compounds for crosslinking are acrylic. System, amide system, ester system and the like.
In addition, when a odor substance that releases solid gas at room temperature and releases a scented gas at a high temperature is placed in a microcapsule, the capsule wall will be exposed if the sublimation temperature or vaporization temperature of the odor substance is lower than the response temperature of the capsule wall. This is convenient because the vaporized odorous substance comes out of the capsule wall when the hole is opened due to alteration.

As described in Patent Document 3, the second point is a method using a thermoresponsive microcapsule as in the first point. However, in order to take out an odorous substance outside the capsule wall, Add a pyrolytic foaming agent containing nitrogen gas. In this method, the foaming agent is decomposed at a high temperature, and then the capsule wall is destroyed and the odorous substance comes out of the capsule wall by the internal pressure due to the thermal expansion of the nitrogen gas released into the microcapsule.
First, the thermally decomposable foaming agent decomposes at an intended temperature and emits a gas, and may have a decomposition temperature equal to or lower than the glass transition point (temperature) of the microcapsule wall film.
In this way, as in the first point, when an odorous substance that releases solid gas at room temperature and releases a scented gas at high temperature is put in the microcapsule, the odorous substance is higher than the temperature at which the capsule wall is destroyed. It is convenient to lower the sublimation temperature or vaporization temperature of the liquid.

The third point is a method in which a kneaded product of an odor substance and a hot-melt composition is placed in a microcapsule having a plurality of holes in the wall surface as described in Patent Document 4. In this method, the hot-melt composition melts at a high temperature, and the odorous substance goes out of the wall through a hole on the wall surface of the microcapsule.
In this method, the melting temperature of the hot-melt composition in the microcapsule is the odor substance release temperature, and it is not necessary to destroy the wall material of the microcapsule. Examples of the material for the heat-meltable composition include fatty acid compounds and other compounds, and examples of the fatty acid compounds include fatty acids and fatty acid derivatives.

FIG. 6 is a view showing a state in which a coating film for protecting microcapsules or gel is provided on the surface of the plug insertion piece for tracking prevention / warning according to the present invention.
A microcapsule or gel 501 is disposed on the surface of the tracking prevention / warning plug insertion piece mounting tool 101, and a coating film 601 is provided on the microcapsule or gel 501. In order to release the odorous substance 303, the coating film 601 is previously provided with pores 602 or is opened at a high temperature. For example, the pores 602 are closed with a hot-melt composition such as paraffin. The material of the coating film 601 is a material that changes in quality at a desired temperature at which the odorous substance 303 is desired to be released when it is desired to open a hole at a high temperature. When a plurality of types of microcapsules having different odor substance release temperatures are used, it is preferable to change the quality at the lowest odor substance release temperature.
As the coating film, a porous polypropylene film used in the medical field, a micro sponge made of polypropylene resin, a polyolefin-based composite microporous film disclosed in JP2011-519385A, and other polyethylene porous films can be used. is there.

As described above, the tracking prevention / warning plug mounting device according to the present invention is an insulator and is attached to the base of the plug of the power plug so as to prevent dust and moisture from entering. When the temperature of the plug part rises to a predetermined temperature as a pre-stage of the above phenomenon, the odorous substance in the microcapsules arranged on the surface is released for a long time without being volatilized at a time to warn of the temperature rise. To do. The microcapsules are prevented from being damaged, peeled off or altered by being in contact with other objects by providing a contact prevention tool.
Accordingly, the tracking prevention / warning plug mounting device according to the present invention is provided with a high level of prevention and warning functions for tracking phenomenon, and has extremely high industrial applicability.

DESCRIPTION OF SYMBOLS 101 Tracking prevention and warning plug insertion piece mounting tool 101A Plug surface 102 Plug hole 103 Projection surface part 201 Body 202 Plug insertion piece 203 Power cord 301 Outlet cover 302 Plug insertion port 303 Odor substance 401 Depression 501 Microcapsule 601 Covering Membrane 602 pores

Claims (5)

It can be installed by inserting the plug of the power plug,
A plug hole portion formed of an insulator and having a plug hole for inserting the insertion piece is provided on a first surface including the plug hole portion or a second surface extending from the plug hole portion. ,
It has an odor generating part that has an odor substance in a microcapsule or gel to generate an odor due to a temperature rise by tracking,
In order to prevent the microcapsule or the gel from being damaged due to contact with the gel, a contact prevention tool having a partition wall between the odor generating part and the outside is provided. Insert piece mounting tool. The contact preventive tool has a recess into which the microcapsule or the gel is placed on the surface of the first surface or the second surface, and the surface other than the recess stops the other surfaces from contacting each other. A coating film that is a narrow depression in front width so as to be a partition, or that covers the microcapsule or the gel disposed on the surface of the first surface or the second surface, and serves as the partition Because
The coating film has pores through which the smell of an odor substance can pass in advance, or the pores sealed with a sealing agent that changes at a high temperature so that the pores open at a desired temperature or higher. The plug insertion piece for tracking prevention / warning according to claim 1, wherein at least one of the above is provided. The plug insertion for tracking prevention / warning according to claim 1 or claim 2, comprising a plurality of types of the microcapsules or the gel for releasing the odorous substance at different temperatures. One-piece mounting tool. 4. The tracking prevention / warning plug insertion piece mounting device according to claim 3, wherein the odor is different for each type. The odor substance is released at a plurality of different temperatures of the plug hole by providing a plurality of the odor generating parts at different distances from the plug hole. The plug prevention piece installation tool for tracking prevention and warning according to any one of claims 1 to 4.

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