JP5696344B2 - Fixture with temperature-sensitive discoloration - Google Patents

Description

  The present invention can be easily retrofitted while maintaining the existing state of the electrical connection terminal fitting (hereinafter referred to as the terminal fitting) and the vicinity thereof, and the insulation cap attached to the terminal fitting, particularly the existing fitting of the terminal fitting, the electric wire and the insulation cap. The present invention also relates to a temperature-sensitive color changer-equipped tool having a resin body having a temperature-sensitive color changeable substance that can be attached to piping or the like.

  Conventionally, thermal discoloration molded bodies for detecting overheating are known in electric wires and cords used for indoor wiring connecting between the switchboard and distribution board, cables constituting outdoor wiring, parts of various electric devices, etc. Yes. These are made by mixing a thermochromic substance into a synthetic resin material and molded into a predetermined shape such as a sheet or tube, or applying a thermochromic substance on the surface of a molded product made of a synthetic resin material. And is used by being affixed to or coated on the above-mentioned electric wire or the like that is a detection object.

However, electric wires, cords, and cables used for wiring such as indoor wiring and outdoor wiring described above are generally equipped with terminal fittings at the ends, and terminal fittings are attached to switchboards, distribution boards, etc. It will be connected to other wiring via. FIG. 7 is a diagram showing a distribution board. The distribution board 700 has a main breaker 701 for main power supply wiring, and this output is divided into a sub breaker 703 for sub power supply wiring via a bus bar 702. The output of the sub-breaker 703 is connected to each electric wire by a terminal fitting, and an insulating cap is attached to the connection portion 704 between the terminal fitting and the electric wire. In such a terminal fitting and electric wire connecting portion 704, an insulating cap having a temperature-sensitive discoloration function is often attached at the time of newly installing. The connection portion 704 between the terminal fitting and the electric wire has a contact resistance that increases due to looseness of connection over a long period of use, and there is a risk of inducing a fire due to heat generated by current flowing therethrough. Therefore, for safety monitoring, an insulation cap with a temperature-sensitive color change function that can detect heat generation before the occurrence of a fire has been added. However, in existing distribution boards and distribution boards, a large number of terminal fittings and electric wire connection portions 704 are already provided with insulating caps having no temperature-sensitive color changing function.

FIG. 8 is a diagram illustrating a connection portion between the terminal fitting and the electric wire. In 8-A, the tip of the terminal fitting 800 has a circular plate-shaped ring portion 801 having a mounting hole into which a bolt of a terminal of the sub-breaker 703 is inserted and an electric wire binding barrel portion 802 integrally connected thereto. The barrel portion 802 is electrically connected to the metal wire at a portion of the electric wire 803 without an insulating coating. 8B shows a state where an insulating cap 804 is attached. A plurality of electric wires come out from one breaker with an insulating cap 804 attached, and a number of breakers are arranged as shown in FIG.

There has been a demand to easily add a temperature-sensitive color changing function and ensure safety while maintaining the state of being attached to the insulation caps 804 of such existing distribution boards and distribution boards. There has also been a demand to monitor temperature changes in hot water piping of thermal power plants and the like.

As a countermeasure, a temperature-sensitive discoloration tape was applied on the insulating cap 804, but there was a problem that the adhesive material deteriorated and peeled off due to heat and use for many years, which is an unsatisfactory measure. Yes.

Patent Document 1 proposes a temperature-sensitive discoloration molded article for detecting heat generation of an electric wire. A temperature-sensitive discoloration molded article that knots a single electric wire or an aggregate of a large number of electric wires has been proposed, but generally, the heat generation is more at the connecting portion between the electric wire and the terminal than the electric wire itself. This is because heat generation is caused by an increase in contact resistance due to loose connection. It is easier to implement as a monitoring measure if the terminal connection part is specified than an unspecified electric wire. However, the electric wire has an insulating coating and is linear and simple, only changing depending on the diameter. On the other hand, since the terminal has a complicated shape and the terminal is exposed, the temperature-sensitive discoloration body corresponding to the terminal connection part has to take into account the complexity of the shape of the insulating cap that secures the insulation function and heat conduction. There is a need to. In addition, when removing a temperature-sensitive color-change molded article once attached, the proposed temperature-sensitive color-change molded article cannot be removed and cannot be reused without cutting the temperature-sensitive color-change molded article itself. There were drawbacks. In addition, in this example, there is a disadvantage that the expensive temperature-sensitive color-changing dye is included in the entire nodule part other than the part necessary for display, and the extra part is separated at the time of the nodule. .
In addition, in Patent Document 2, the present applicant attaches a winding-type temperature-sensitive color changing body that can be easily applied to the terminal portion to the terminal portion in Patent Document 3 using a restoring force of a resin body or a spring body. A tool with temperature-sensitive discoloration is proposed.

JP H11-41760 JP 2005-308567 A Japanese Patent Application No. 2008-037543

The present invention has been made to solve the above problems, and is an attachment tool that is attached to an object to be detected and detects a temperature change by discoloration, and includes an electrical connection terminal fitting (hereinafter referred to as a terminal fitting), a terminal, Insulation caps with metal fittings, especially terminal metal fittings, electric wires, temperature-sensitive color-changing bodies having temperature-sensitive color-changing bodies that can be easily installed while maintaining the existing state, or can be attached to pipes, etc. The purpose is to provide attachments.

The present invention has been proposed in order to solve the conventional problems with the background described above, and is a tubular resin body having a circular tubular or polygonal cross-sectional through hole, and is attached to the through hole. A resin body having a cross section of a binding tool or a cross-sectionally round, oval or polygonal rod-shaped resin body, and the resin body is discolored by detecting a temperature change due to heat generated from electrical terminal fittings or piping. It has a temperature-sensitive discoloration body or at least on the surface or part of the resin body. Hereinafter, it demonstrates along a claim.

The invention according to claim 1 is a temperature-sensitive discolored body-attached tool that is wound around a detected object and detects a temperature change, and has a cross-section of a circle, an ellipse, and a polygon for passing the binding tool. It has a tubular shape with a through hole in the longitudinal direction, and has a resin body having a temperature-sensitive discoloration body.

The invention according to claim 2 is the temperature-sensitive color changing body-attached device according to claim 1, further comprising an attachment binder passed through the through hole of the tubular resin body, wherein the attachment binder is It is characterized in that it is in the form of a band or string for wrapping around the object to be detected.

According to a third aspect of the present invention, there is provided the temperature-sensitive color changer-attached device according to any one of the first and second aspects, wherein the flat resin body is integrally connected to the resin body and has the temperature-sensitive color change body. It is characterized by having.

According to a fourth aspect of the present invention, there is provided the temperature-sensitive color changing body-attached device according to any one of the first to third aspects, wherein the resin body is divided into a plurality of pieces having a desired length. The attachment tying tool passed through the resin body has a size longer than the total length of the resin body.

Since it is configured as described above, the temperature-sensitive color changer-equipped tool of the present invention is a device with a temperature-sensitive color changer while maintaining the connection state to the existing insulating caps at the connection terminals of the distribution board and distribution board breakers. Can be easily installed, or it can be attached to piping that wants to detect temperature changes, so it is possible to prevent fires due to poor contact and accidents due to abnormal overheating.

It is a figure which shows one embodiment of the fixture with a temperature-sensitive color-change body of this invention. It is a figure which shows another embodiment of the fixture with a temperature-sensitive color-change body of this invention. It is a figure which shows another embodiment of the fixture with a temperature-sensitive color-change body of this invention. It is a figure which shows another embodiment of the fixture with a temperature-sensitive color-change body of this invention. It is a figure which shows another embodiment of the fixture with a temperature-sensitive color-change body of this invention. It is a figure which shows what attached the temperature-sensitive color-change body sticking layer in the temperature-sensitive color-change object attachment tool of this invention. It is a figure which shows a distribution board. It is a figure which shows the connection part of a terminal metal fitting and an electric wire.

As the best mode for carrying out the invention, the temperature-sensitive discoloration body-attached tool of the present invention is a tubular resin body having a circular tubular or polygonal cross-sectional through-hole, and the attachment binder is passed through the through-hole. The resin body has a temperature-sensitive color-changing body that changes color by sensing the temperature due to heat generated from electrical terminal fittings and piping, or at least on the surface or part of the resin body. This is a temperature-sensitive color changer-attached tool that can be attached to an existing body of a terminal fitting, an electric wire, and an insulating cap while maintaining the existing state. Hereinafter, the embodiment will be described.

FIG. 1 is a view showing an embodiment of a temperature-sensitive color-changer-equipped device of the present invention. 8 are attached to the surface of the existing terminal fitting 800 and the insulating cap 804 attached to the electric wire 803 and the electric wire binding barrel 802 in FIG. In 1-A, the resin body 100 is a tubular resin body having a through hole 102 penetrating in the length direction, and the attachment tie 101 is a tie having an attachment tie fastening portion 103. Next, the temperature-sensitive color changer-attached tool 104 shown in 1-B is a state in which the attaching binder 101 is passed through the through hole 102, and as shown in 1-C and 1-D, the insulating cap Attached by being wound around 804 or the wire binding barrel portion 802. In addition, as the binding tool 101 for attachment, strip | belt-shaped things, such as a tie lock, are applicable.

FIG. 2 is a view showing another embodiment of the temperature-sensitive discoloration-equipped device of the present invention. In 2-A,
The resin body 200 is an example having a flat resin body that is integrally connected to the resin body and has a temperature-sensitive color change body. The resin body 200 is a rectangular flat resin body that is thin in the height direction, and is represented by 1-A. 100, and the resin body 201 in 2-B is a resin body having a shape such that two of the resin bodies 100 are placed on the through holes 203. And is attached by being wound around the insulating cap 804 or the wire binding barrel 802 as indicated by 2-C. Further, the resin body 202 shown in 2-D is shaped such that the resin body 200 is shortened in the length direction, and is connected to each through hole 203 so as to be skewered by using the binding tool 101 for attachment. And use it.

Next, FIG. 3 is a figure which shows another embodiment of the temperature-sensitive discoloration attaching tool of this invention. As shown in 3-A, the resin body 300 has a through hole 302 in a thin rectangular plate in the height direction, and in 3-B, the resin body 301 is shortened in the length direction. A plurality of such resin bodies are used, and the attaching tying member 101 is passed through the through-hole 302, and the resin body 301 is used by being skewered.

FIG. 4 is a view showing another embodiment of the temperature-sensitive discoloration-equipped device of the present invention. As shown in 4-A and 4-B, the resin bodies 400 and 401 are elliptical flat plate-shaped resin bodies that extend to both side surfaces of the resin body 100 and are integrally connected. 101 is used through the through hole 402.

Next, as shown in FIG. 5A, 5-A, the resin body 500 is a circular tube that is long in the length direction, and has a length longer than the time when it is passed through the attachment tying member 101. Can be cut into lengths. This is a very convenient feature.
In the case of a tube, it can be used in the form of 1-B in FIG. Further, it can be used in various other forms such as passing an existing transparent color resin band, nylon thread, other wire or the like. Moreover, as shown to 5-D, the form of the resin body containing a core wire which coat | covered the resin body 500 on core wires 502, such as these wires, can also be considered. The core wire 502 has a function of wrapping around a detection object and facilitating knots.
As shown to 5-B, it winds around the insulation cap 804 or the electric wire binding barrel part 802, and uses it. In addition, as shown to 5-E, you may have the temperature sensitive color-change body part 503 in a part of resin body.

In the above, the embodiment of the temperature-sensitive color changing body-attached tool of the present invention has been described with reference to FIGS. 1 to 5. The following can be said in common with the respective embodiments of the temperature-sensitive color-changer-equipped device of the present invention. In each embodiment, the temperature-sensitive color changing body changes from colored to white or transparent when the temperature is higher than a certain temperature, or vice versa, and when the temperature is returned, the color is reversible and the irreversible that does not return. Thus, temperature abnormality can be visualized. Details are described in paragraphs 0026 and 0027.
The resin body may be a single body or a plurality of resin bodies depending on changes in the shape and diameter of the portion to be attached. Also, the resin bodies 100, 200, 201, 202, 300, 301, 400, 401, 500 are temperature sensitive. The color changing body may be included in the entire resin body 100, 200, 201, 202, 300, 301, 400, 401, 500, or the temperature sensitive color changing body may be included in the resin body 100, 200, 201, 202, 300, 301, 400. , 401, 500, particularly on the inner surface. For example, the temperature-sensitive color changing body may be covered or pasted and integrated. FIG. 6 is a view showing such an example in which a temperature-sensitive color-changing material attaching layer is attached to the temperature-sensitive color-changing material-attached tool of the present invention. In this case, it is desirable that at least the abutting portion is transparent and the inside can be seen.

Examples of the resin of the temperature-sensitive color changer-equipped tool that can be used in the present invention include polyvinyl chloride resin, polyolefin resin, polyethylene resin, acrylic resin, styrene resin, polyamide resin, aromatic polyester resin, polypropylene resin, and silicone resin. Although it is mentioned, it is not limited to these. A polyvinyl chloride resin, a polyolefin resin, a polyethylene resin, and the like are preferable from the viewpoint that they have appropriate flexibility and are easy to attach and have excellent adhesion. Furthermore, from the viewpoint of improving the thermal discoloration by increasing the adhesion of the thermochromic molded product to the cable, a resin that thermally shrinks is also preferable. Examples of the resin exhibiting such characteristics include polyvinyl chloride resin, polyolefin resin, polyethylene Examples thereof include resins. Moreover, said resin may be used independently and 2 or more types may be mixed and used.

The temperature-changing substance used in the temperature-sensitive color-changing body used in the present invention is a reversible temperature-changing substance that returns to its original color when the temperature is lowered, as long as the temperature is lowered. Any irreversible temperature-changing substance that does not return to its original color even when it is lowered may be used. The temperature-sensitive color-changing substance used in the present invention normally exhibits a predetermined color, but will exhibit a different color when the temperature is higher than a predetermined temperature. When a reversible temperature-changing substance is used, the original color is restored when the temperature is lower than a predetermined temperature. When an irreversible substance is used, the discolored state is maintained. For example, the change in the color of the temperature-changing substance may include that the temperature-changing substance having a color such as red, white, blue, green, black, yellow, etc. changes its color to transparent or almost transparent by heating. However, it is not limited to these.

The reversible thermochromic material usable in the present invention has the advantage that it can be used repeatedly. From this point of view, it is desirable to use a macroencapsulated material that can be used over a long period of time as the reversible temperature-changing substance. For example, thermosensitive dyeing microcapsule powder manufactured by Nippon Capsule Products Co., Ltd. can be used. This includes electron-accepting compounds (developers), electron-donating dyes that are colorless dyes that react with these compounds, and electron-accepting compounds and electron-donating color-forming dyes. A thermochromic substance composed of a mixture with a desensitizer that has the property of inhibiting the reaction of the mixture at a temperature above or below a certain temperature is transparent and does not exude internal components and penetrates from the outside. It is microencapsulated with a material that can prevent the above, and has a characteristic that the color disappears at a certain temperature (or below). Examples of the electron-accepting compounds include a compound having a phenolic hydroxyl group (for example, bisphenol A) or a metal salt thereof, a metal salt of a carboxylic acid, or an acid acid ester (for example, propyl gallate) or a metal salt thereof. Is used. Examples of electron donating colorants include crystal violet lactone (blue), macalite green lactone (green), rhodamine B lactam (red), 3,6-dimethoxyfluorane (yellow), and 3-cyclohexylamino-6-chloro. Fluorane (orange), diethylaminobenzofluorane (peach), 8-diethylamino-6-methyl-7-anilinofluorane (black) and the like are used. As the desensitizer, alcohol, fatty acid and the like are used.

As the irreversible temperature-changing substance that can be used in the present invention, any substance can be used as long as it is a substance that changes color at a predetermined temperature and does not return to its original color even after the temperature is lowered. For example, thermochromic organic dye spiropyrans, ethylene derivatives substituted with condensed aromatic rings such as biantron and dixanthylene, etc .; metal complex crystals CoCl _2. (CH ₂ ) ₆ N ₄ .10H ₂ O, PbCrO ₄ , Cu ₂ HgI ₄ , Ag ₂ such HgI _4; (used in microencapsulated) the cholesteric liquid crystal; electron-donating coloring compound and an electron-accepting compound and a polar organic compound in combination, electron-donating color-forming compound triphenyl methane-based compound (Various fluoranes, phenylphthalides, etc.), various indolylphthalides, spiropyrans, leucooramines, acyl or arylauramines, etc.-electron-accepting compounds compounds having phenolic hydroxyl groups, compounds having phenolic hydroxyl groups Metal salts, various triazoles, carvone , Metal salts of carboxylic acids, etc., polar organic alcohols (oleyl alcohol, etc.), amides (acetoacetylanilide, etc.), esters (diphenyl phthalate, etc.), water-soluble primary amine salts of carboxylic acids, ketones Alternatively, ethers, azomethines having at least one aromatic group as a linking group, and the like are exemplified, but the invention is not limited thereto.

Regardless of the reversible or irreversible substance used in the present invention, the color change temperature can be changed by adjusting the molecular structure of the substance and the content of the substance that controls the color change temperature. The temperature can be appropriately set within a range of about ± 30 ° C, preferably about ± 20 ° C. The above-mentioned temperature-changing substance may be used alone, or a plurality of substances may be mixed and used.

As long as the object of the present invention is not impaired, various additives and inorganic fillers may be added in such an amount that the effect is exhibited. Examples of various additives include, but are not limited to, flame retardants, flame retardant aids, anti-dripping agents, antioxidants, ultraviolet absorbers, mold release agents, lubricants, and colorants.

  The above temperature-sensitive color changer-equipped equipment can be attached to the connection terminals of the switchboard and distribution board breakers and the existing insulation caps while maintaining the connected state, or piping, etc. Therefore, industrial applicability is extremely high.

100, 200, 201, 202, 300, 301, 400, 401, 500 Resin body 101 Attached binding tool 103 Attached binding tool fastening part 104 Temperature sensitive discoloring body attaching tool 102, 203, 302, 402, 501 Through hole 502 Core wire 503 Temperature-sensitive color-changing body part 600 Temperature-sensitive color-changing body adhesive layer 700 Distribution board 701 Main breaker 702 Bus bar 703 Sub-breaker 704 Terminal fitting and wire connection portion 800 Terminal fitting 801 Circular plate ring portion 802 Wire binding barrel portion 803 Electric wire 804 Insulation cap

Claims (4)

It is attached to a body to be detected and detects a temperature change, and has a cross section of a circle, an ellipse, a polygonal shape with a through hole in the longitudinal direction for passing a binding tool, and has a temperature-sensitive color changing body. A temperature-sensitive discoloration-equipped tool comprising a resin body. The attachment binder passed through the through hole of the tubular resin body, wherein the attachment binder is in a band shape or a string shape for winding around the detected body. The tool with a temperature-sensitive discoloration body according to 1.
3. The temperature-sensitive color changer-attached device according to claim 1, further comprising a flat resin body integrally connected to the resin body and having the temperature-sensitive color change body. 4. The resin body is divided into a plurality of desired lengths,
The feeling according to any one of claims 1 to 3, wherein the attachment tying tool passed through the resin body has a size longer than a total length of the resin body. A tool with a temperature-changing body.

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