KR20090063221A - Temperature detector - Google Patents

Abstract

Intended is to provide a temperature detector, which can be made conductive, when exposed even partially to a target temperature such as an abnormally high temperature, to detect the temperature, which is made so thin and flexible that it can be mounted on detection objects of various shapes and which has an excellent operation reliability. The temperature detector comprises a first long electrode having a spring property, a second long electrode arranged adjacent to the first electrode, and a spacer made of an insulating material and arranged to insulate the first electrode and the second electrode biased in one direction. When the temperature detector is exposed to a predetermined temperature, the insulation by the spacer between the first electrode and the second electrode is released so that the first electrode and the second electrode are made to contact and conduct with each other thereby to detect the predetermined temperature.

Description

TEMPERATURE DETECTOR

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a temperature sensing body that can conduct and sense a predetermined temperature even when a portion of the temperature sensing body is exposed to a target temperature such as an abnormal high temperature. In particular, the present invention relates to a thin object and excellent flexibility, so that it can be attached to a sensing object of various shapes and has excellent operational reliability.

In order to detect abnormal temperature in a hot air heater, a lithium secondary battery, etc. conventionally, as a safety device, a thermal fuse or thermistor of an element shape is used as a safety device. (thermistor) is used. Moreover, when there exists a wide range of places which may become abnormal temperature, in order to improve safety, several temperature fuses and thermistors are connected and used.

However, in such a configuration, there is a problem that it is not clear whether the portion for detecting the abnormal temperature is a dot and whether the abnormal temperature generated locally is reliably acted on. In addition, since the use of thermal fuses and thermistors increases, component costs not only increase, but also enormous air consumption is consumed in the connection process.

As a solution to this problem, conventionally, various face-shaped temperature fuses are known. For example, as in Patent Literature 1, a thermoplastic sheet is formed between a film sheet-like planar electrode and a film-shaped thermal sensing electrode in which a plurality of holes are formed. The resin film was inserted and these were coat | covered with the polyethylene terephthalate film. In Patent Document 1, when an abnormal high temperature occurs, the thermoplastic resin film is melted and introduced into a concave portion or a plurality of holes formed on the surface of the heat sensing electrode so that the heat sensing electrode and the planar electrode contact each other. Therefore, the present invention relates to a technology for detecting abnormal temperature by being conductive.

In addition, as in Patent Document 2, two board-shaped electrode plates face each other, and an electric insulating material that is melted at a temperature equal to or higher than a predetermined value over the entire area therebetween is pressed and sandwiched. It can be mentioned. This patent document 2 relates to the technique of electrically conducting by electrically melting an electrically insulating substance by overheating, and contacting both electrode plates, and detecting abnormality.

In addition, although not directly related to the present application, in the field of heating wires, a pair of spiral electrode wires are formed on the outer surface of the PCC heating element layer, for example, as in Patent Document 3, It is known to form a heat-melt polymer layer in contact with an electrode line and a PCC heating element layer, and to further form a conductor line on the outer surface of the heat-melt polymer layer. This patent document 3 relates to the technique which prevents overheating by melt | dissolving a molten polymer layer with abnormal overheating, and making a spiral electrode line and outermost conductor line contact.

On the other hand, as a technology related to the present application, Patent Document 4 is filed by the patent applicant.

Patent Document 1: Japanese Patent Application Laid-Open No. 6-229839

Patent Document 2: Japanese Patent Application Laid-Open No. 9-145164

Patent Document 3: Japanese Patent Application Laid-Open No. 59-207586

Patent Document 4: Japanese Patent Application No. 2006-81339

(Challenge to be solved)

Here, in the case of the planar temperature fuse disclosed in Patent Document 1, a part of the thermoplastic resin film remains between the heat sensing electrode and the planar electrode unless the recessed portion or the hole of the heat sensing electrode is formed to a sufficient depth. As a result, the thermal sensing electrode and the planar electrode cannot be reliably contacted. However, if the concave portion or the hole portion of the thermal sensing electrode is formed to a sufficient depth, the thickness of the thermal sensing electrode is increased, so that flexibility as a surface temperature fuse is not obtained.

Moreover, since the surface-shaped thermal fuse disclosed by patent document 2 does not have a space where a molten electrically insulating substance moves, it is thought that it remains between both electrode plates in a molten state, and neither electrode plate contact is made. Moreover, this patent document 2 discloses using what mix | blended soldering particle | grains in the flux as an electrically insulating material. As a result, at the abnormal temperature, the flux is melted away and the soldering particles overlap or fuse, thereby relaying between the two electrode plates. However, in this case, when it is detected by the flux effect, it is considered that the molten soldering is separated into small spherical shapes so that the connection between the two electrode plates cannot be conducted. In addition, if it is used for a long time in a high temperature environment, it is considered that the flux dissipates and disappears due to thermal deterioration. In this case, even if the abnormal temperature is not reached, both electrode plates become conductive and malfunction.

In the heating wire described in Patent Literature 3, the spiral electrode wire is only wound around the PTC heating element layer, and the outermost conductor wire is only wound around the heat-melting polymer layer. For this reason, even if abnormally overheating generate | occur | produces locally and a thermomelt polymer layer melt | dissolves, it is thought that a spiral electrode wire and a conductor wire do not reach contact, since the force which changes the distance of a spiral electrode wire and a conductor wire does not generate | occur | produce.

The present invention has been made in view of this point, and its object is to be conductive even when a part of the temperature sensor is exposed to a target temperature such as an abnormal high temperature, and to detect a predetermined temperature, and also to be thin and flexible. It is an object of the present invention to provide a temperature sensing member that can be mounted on various sensing objects and has excellent operational reliability.

(Solution solution)

In order to achieve the above object, the temperature sensing body according to claim 1 of the present invention comprises a long first electrode having a spring elasticity, and the first sensor. An elongated second electrode disposed adjacent to one electrode, and arranged to insulate the first electrode and the second electrode which are pressed in one direction and are insulated from each other; And a spacer formed of a spacer, the insulation of the first electrode and the second electrode by the spacer is released by exposure to a predetermined temperature, and thus the first electrode and the second electrode are brought into contact with each other so that It is characterized in that to detect a predetermined temperature by the communication.

The temperature sensor according to claim 2 is the temperature sensor according to claim 1, wherein at least one of the first electrode and the second electrode is covered with the spacer.

The temperature sensor according to claim 3 is characterized in that, in the temperature sensor according to claim 1 or 2, the first electrode and the second electrode are provided in a entangled state.

In the temperature sensor according to claim 4, in the temperature sensor according to any one of claims 1 to 3, at least one of the first electrode and the second electrode has a stranded wire structure. It is characterized by.

In the temperature sensor according to claim 5, in the temperature sensor according to claim 4, both the first electrode and the second electrode have a stranded structure, and the twisted directions thereof are opposite to each other. It is characterized by.

In the temperature sensing body according to claim 6, in the temperature sensing body according to claim 2, a space supporting member is provided on an outer circumference of the first electrode, the second electrode, and the spacer. It is.

The temperature sensing member according to claim 7 is the temperature sensing member according to claim 6, wherein the space supporting member is made of a conductive material.

The temperature sensing member according to claim 8 is characterized in that, in the temperature sensing member according to claim 2, a separate spacer is further coated on the outer circumference of the first electrode, the second electrode, and the spacer.

The temperature sensor according to claim 9 is characterized in that the spacer is melted at a predetermined temperature in the temperature sensor according to any one of claims 1 to 8.

(Effects of the Invention)

As described above, according to the temperature sensing body according to claim 1 of the present invention, a long first electrode having spring elasticity, a long second electrode disposed to be adjacent to the first electrode, and in one direction A spacer formed of an insulating material and arranged to insulate the first electrode and the second electrode to be pressed, and the insulation of the first electrode and the second electrode by the spacer is released by being exposed to a predetermined temperature; As a result, since the first electrode and the second electrode are in contact with each other, the second electrode is configured to sense a predetermined temperature, the insulation between the first electrode and the second electrode by the spacer is released and the first electrode is actively activated. Since the structure is in contact with the two electrodes, the first electrode and the second electrode are securely in contact with each other. As a result, it is possible to reliably detect a target temperature such as a locally generated abnormal temperature, thereby improving safety. Moreover, since it does not increase the thickness of an electrode, it can be made thin and excellent in flexibility as a temperature sensing body, and can be attached also to the sensing object of various shapes.

In the temperature sensing body according to claim 2, in the temperature sensing body according to claim 1, at least one of the first electrode and the second electrode is covered with the spacer, so that the temperature sensing body has a relatively simple configuration. It is possible to obtain a structure in which insulation between the first electrode and the second electrode pressed in one direction by the spacer is reliably maintained.

In the temperature sensor according to claim 3, in the temperature sensor according to claim 1 or 2, the first electrode and the second electrode are arranged in an entangled state. Not only is it sufficiently pressurized but also temperature sensing is possible in both intersected and intersected areas, thereby improving detection accuracy.

In the temperature sensing body according to claim 4, in the temperature sensing body according to any one of claims 1 to 3, at least one of the first electrode and the second electrode is a stranded wire, The contact between the first electrode and the second electrode can be made more reliable and faster.

In the temperature sensor according to claim 5, in the temperature sensor according to claim 4, both the first electrode and the second electrode have a stranded structure, and the twisted directions thereof are opposite to each other. Since it is a structure, the contact of a 1st electrode and a 2nd electrode at the time of temperature detection can be made more reliable and quick.

The temperature sensing member according to claim 6 is a temperature sensing member according to claim 2, wherein a space supporting member is provided on an outer circumference of the first electrode, the second electrode, and the spacer. As a result, the insulation release operation by the spacer is more smoothly performed.

The temperature sensing member according to claim 7 is the temperature sensing member according to claim 6, wherein the space supporting member is made of a conductive material, so that the temperature supporting member can also function as a second electrode for the space supporting member. Can be.

In the temperature sensing body according to claim 8, in the temperature sensing body according to claim 2, a separate spacer is further covered on the outer circumference of the first electrode, the second electrode, and the spacer. The support of the second electrode is more sure.

In the temperature sensing body according to any one of claims 1 to 8, the temperature sensing body according to any one of claims 1 to 8 has a configuration in which the spacer is melted at a predetermined temperature. Since the melting temperature is equal to the setting of the sensing temperature becomes easy. In addition, the sensing temperature can be freely set by appropriately selecting a spacer having various melting points.

1 is a view showing a first embodiment of the present invention, wherein a part of the temperature sensor is cut away.

Fig. 2 is a circuit diagram showing the first embodiment of the present invention and shows the circuit configuration of the temperature sensing member.

3 is a perspective view showing the first embodiment of the present invention, in which the temperature sensing body is attached to the air conditioner.

Fig. 4 is a view showing a second embodiment of the present invention, and Fig. 4 (a) is a partially cutaway perspective view showing the state of the temperature sensor before the temperature sensing, and Fig. 4 (b) is the state of the temperature sensing body after the temperature sensing. It is a partially cut perspective view showing.

Fig. 5 is a view showing a third embodiment of the present invention, in which Fig. 5 (a) is a partially cutaway perspective view showing the state of the temperature sensor before temperature sensing, and Fig. 5 (b) is the state of the temperature sensing body after temperature sensing. It is a partially cut perspective view showing.

6 is a view showing a fourth embodiment of the present invention, in which part of a temperature sensor is cut away;

FIG. 7 is a diagram showing a fifth embodiment of the present invention, in which a main part of the temperature sensor is cut and enlarged.

FIG. 8 is a diagram showing a sixth embodiment of the present invention, in which a main portion of the temperature sensor is cut and enlarged.

9 is a view showing a seventh embodiment of the present invention, in which a main portion of the temperature sensor is cut and enlarged.

FIG. 10 is a diagram showing an eighth embodiment of the present invention, in which a main portion of the temperature sensor is cut and enlarged.

Fig. 11 is a view showing an eighth embodiment of the present invention, in which a main portion of the temperature sensor is cut and enlarged.

12 is a sectional view showing a ninth embodiment of the present invention, in which a main portion of the temperature sensor is cut and enlarged.

Explanation of symbols on the main parts of the drawings

1: first electrode 2: second electrode

3: spacer 4: base material

5: film 10: temperature sensor

A first embodiment of the present invention will be described below with reference to Figs. On the other hand, the surface-shaped temperature sensor according to the present embodiment is configured to sense the temperature in the vicinity of 85 ° C.

As shown in Fig. 1, a hot melt adhesive (melting point 85 ° C.) and a solid wax are formed on the outer circumference of the first electrode 1 made of SS304 stainless steel wire. The spacer 3 which consists of a mixture of wax (melting point 85 degreeC) is extruded and coat | covered. The first electrode 1 and the second electrode 2 made of a twisted pair are twisted with each other on the base 4 made of a PET nonwoven fabric. On the first electrode 1 and the second electrode 2, an adhesive is coated on one surface to protect the electrode, and a film 5 made of PET is attached. In this way, the temperature sensing body 10 according to the present embodiment is constructed.

And the temperature sensing body 10 which comprises the said structure is provided in the predetermined position of the outer periphery of arbitrary air conditioners 11, for example as shown in FIG. As a result, the abnormal temperature in the hot air heater 11 is detected.

The test circuit configuration of the temperature sensing body 10 is as shown in FIG. In the drawing, reference numeral 6 denotes a power source, and reference numeral 7 denotes an ammeter. In the circuit diagram shown in Fig. 2, the circuit is cut off when the spacer 3 is not melted. On the other hand, when the spacer 3 is melted by a predetermined temperature, the first electrode 1 and the second electrode 2 contact each other. This detects that a current flows in the circuit and reaches a predetermined temperature.

On the other hand, Fig. 2 is a diagram showing a test circuit configuration to the last as described above, and in the case of actual implementation, another circuit configuration is obtained.

The temperature sensor 10 thus obtained is installed in a heating bath not shown in the figure, and the temperature is increased at 1 ° C / min. In the test circuit diagram shown in FIG. 2, the temperature when the spacer 3 was melted and the first electrode 1 and the second electrode 2 were in contact with and energized was measured as the sensing temperature.

On the other hand, the sample number was five. As a result, all samples were detected at 85-90 degreeC, and it was confirmed that the target temperature can be detected reliably.

According to the above embodiment, before reaching the target temperature, the twisting force is applied to the first electrode 1 and the pressure is applied to the first electrode 1, and the first electrode 1 is covered. The spacer 3 is installed at a distance from the second electrode 2, that is, the first electrode is pressed and held by the spacer while the first electrode is pressed. Even when a part of the temperature sensor reaches the desired temperature, the spacer 3 is melted to fix and support in the pressurized state so that the first electrode 1 actively contacts the second electrode 2. Therefore, the first electrode 1 and the second electrode 2 are reliably connected to each other so that the temperature can be sensed. Moreover, since none of the 1st electrode 1, the 2nd electrode 2, the spacer 3, the base material 4, and the film 5 has thickness, it is excellent in flexibility, and therefore, temperature The whole sensing body 10 can also be made thin and excellent in flexibility.

Since the spacer 3 is extruded and coated on the outer circumference of the first electrode 1, the first electrode 1 and the spacer 3 can be treated as one linear body. Therefore, handling at the time of manufacture and arrangement | positioning with respect to a base material become easy, and productivity can be improved. In addition, since the spacer 3 completely covers the first electrode 1, it is possible to reliably prevent conduction, that is, malfunction in a state where the target temperature is not reached.

On the other hand, the temperature sensing body 10 according to the present invention is not limited to the above embodiment. The first electrode 1 may be a conductor having spring elasticity, and the material may be, for example, a hard steel wire, a piano wire, or an oil tempered wire. oil-tempered wire), stainless steel wire, etc., are not particularly limited. In addition to this, it is also possible, for example, to wrap a conductive wire in an insulating material having spring elasticity. The shape is not particularly limited as long as it does not prevent active contact with the second electrode when the fixing and the support in the pressurized state are released. For example, the shape is a single line or a stranded wire. ), A so-called band-shaped one having a predetermined width, and the like, and these are disposed on the substrate 4 in various shapes such as a meandering shape or a straight line shape. I think. In this case, the first electrode 1 may not be composed of one conductor but may be composed of a plurality of conductors. For example, a plurality of linear conductors may be formed into a mesh to form the first electrode ( 1) may be used.

Next, the second electrode 2 is not limited as long as it is a conductive material. For example, a single wire or a stranded wire may be formed of a conductive organic fiber such as iron, copper, aluminum, an alloy thereof, carbon fiber, or the like. It may be a line-like thing like what is, and what is called a strip | belt shape provided with a predetermined | prescribed width | variety. It is also possible to use a sensor line in which a temperature sensing line is wound around an outer tension body. Moreover, it may not be a linear thing, For example, it may be comprised by what is foil-like thing and what formed a plurality of linear conductors in the shape of a mesh. In this way, when disposing the second electrode 2, productivity can be improved because it can be easily assembled without the need for complicated wiring. Examples of the foil-shaped second electrode 2 include aluminum foil, copper foil, copper-PET film, conductive organic film, and the like. What is necessary is just to select suitably the thing of the thickness so that the solubility does not fall.

On the other hand, if the second electrode 2 has a band or foil shape, it is possible to increase the contact point with the first electrode 1 as described above. However, in terminal processing when connecting an electrode to a lead wire etc., a linear electrode is excellent in workability. For this reason, by using a strip | belt-shaped 2nd electrode and a linear 2nd electrode together, the contact point of a 1st electrode and a 2nd electrode can be increased, and workability of terminal processing can be improved.

Next, as the spacer 3, before reaching the target temperature, the first electrode 1 can be fixed and supported in a pressurized state, and when the target temperature is reached, the fixing and support can be released. If so, there is no particular limitation. For example, the shape and arrangement of the first electrode 1 or the second electrode 2, such as melting at a predetermined temperature, vaporizing, shrinking, or decreasing viscosity. Alternatively, it may be appropriately selected according to the shape or arrangement of the spacer 3 itself. Among these, melting at a predetermined temperature is preferred because it can be used most simply and the setting of the sensing temperature is easy. Examples of the material for melting at a predetermined temperature include polyethylene resins, ethylene-vinyl acetate copolymer resins, polyester resins, and polyamide resins. ), Polyvinylalcohol copolymer resin, polyvinylidene chloride resin, polyvinyl chloride resin, polyurethane resin, polypropylene resin Thermoplastic elastomers such as thermoplastic resins, thermoplastic elastomers such as olefin elastomers, organic salts, organic salts, plant-based, animal-based ore-based waxes, paraffin, micro Petroleum waxes, such as micro waxes and petrolatum waxes, wax products, resin products, Agent may be mentioned synthetic product such as a mixture wax, fatty acid, fatty acid salt or the like of these, may be suitably selected that the melting point for the temperature of interest from the aforementioned.

In FIG. 1, although the thing which twisted the 1st electrode 1 and the 2nd electrode 2 was arrange | positioned in a meandering shape, it is not limited to what was arrange | positioned in such a shape. What is necessary is just to arrange | position in the shape of the hot air | heater 11, etc. suitably according to various usage conditions, and the thing which twisted the 1st electrode 1 and the 2nd electrode 2 mutually, for example is arrange | positioned in a straight line. You may use it.

However, if it is arranged in a meandering shape as shown in Fig. 1, even if the surface of the air conditioner 11 is a curved surface or a complicated shape, it can be easily adhered to the shape following the shape. In other words, when disposed in a meandering shape, the electrode is inclined with respect to a curved surface or a complicated shape, so that the bend radius of the electrode itself is increased, and as a result, the adhesion is improved. In addition, even when an external force such as tension or bending is applied to the temperature sensing body 10, it is difficult to apply excessive force to the first electrode 1 or the second electrode 2, and thus the first electrode 1 This is preferable because disconnection of the second electrode 2 can be prevented.

Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, although the first electrode 1 and the second electrode 2 covered by the spacer 3 are twisted together, the configuration is not limited thereto. Importantly, before the target temperature is reached, the spacer 3 is arranged to insulate the first electrode 1 and the second electrode 2, and the first electrode 1 is in the pressurized state. The first electrode 1 and the second electrode 1 are fixed and supported by the spacer 3 and are exposed to the desired temperature, thereby releasing the fixing and supporting of the first electrode 1 by the spacer 3. What is necessary is just a structure which 2) contacts.

As another specific example, the structure in which the coil-shaped first electrode 1 is covered with the spacer 3 in a state where the diameter is small as shown in FIG. 4 and the second electrode 2 is arranged on the outer circumference (FIGS. (a) shows the state before the detection and FIG. 4 (b) shows the state after the detection).

Next, a third embodiment of the present invention will be described with reference to FIG. In this case, it is the same as the case of the said 2nd Example, and is made to the spacer 3 and the base material 4 in the state which forcibly laid down the square part standing up on the 1st electrode 1 by force. And the second electrode 2 is arranged on the spacer 3 (FIG. 5 (a) shows before detection and FIG. 5 (b) shows the state after detection). Can be mentioned.

These second and third embodiments are also within the scope of the present invention. Preferably, as in the first embodiment, the spacer 3 is disposed on either or both of the first electrode 1 and the second electrode 2. Is coated and the first electrode 1 and the second electrode 2 are entangled with each other.

On the other hand, the term "entangled" as used herein includes not only the twisted form as described above, but also the form in which the first electrode 1 is rolled around the outer periphery of the second electrode 2, for example.

Next, a fourth embodiment of the present invention will be described with reference to FIG. Although the base material 4 shown in the said 1st Example-3rd Example does not need to be provided in particular, When the spacer 3 is made to melt at predetermined | prescribed temperature, as a preferable aspect, the molten spacer 3 will move. It is sufficient to have a shape and configuration such that it can contain the melted and dripping down. For example, a sheet formed with irregularities and holes, a mesh made of various linear materials, and the like may be considered, but it is particularly preferable to be able to absorb the molten spacer 3. This is because the contact between the first electrode 1 and the second electrode 2 can be made faster by absorbing the molten spacer 3 effectively. As the base material 4 which can absorb the molten spacer 3 in this way, not only the nonwoven fabric described in the said Example but a mesh cross, a sponge, a woven fabric, paper, etc. are considered, for example.

In addition, the material which comprises the base material 4 is not specifically limited. Of course, there is no problem even if a PET film or the like is used like the film 5. In addition, the shape is not limited to a sheet shape, for example, as shown in Fig. 6, the first electrode 1, the second electrode 2, and the spacer 3 may be covered, and this coating material may be used as the base material 4. .

Next, a fifth embodiment of the present invention will be described with reference to FIG. The film 5 shown in the said 1st Example-4th Example may also be provided as needed similarly to the base material 4, and it is not necessary to install it unless it is needed in particular.

In the case where the first electrode 1 and the second electrode 2 coated with the spacer 3 are twisted with each other, as shown in FIG. 7, the first electrode 1 coated with the spacer 3 and A braid 21 made of various fiber materials, fine metal wires, or the like may be applied to the outer circumference of the second electrodes 2 twisted with each other. This makes it possible to make a space around the first electrode 1 and the second electrode 2 coated with the spacer 3, so that the molten spacer 3 can be easily moved to the substrate 4. . If the braid 21 is made of a conductive material such as a thin metal wire, the braid 21 can be made to function in the same manner as the second electrode 2.

Next, a sixth embodiment of the present invention will be described with reference to FIG. In the case where the first electrode 1 and the second electrode 2 coated with the spacer 3 are twisted together, as shown in FIG. 8, the first electrode 1 and the first electrode 1 coated with the spacer 3 are formed as shown in FIG. 8. On the outer circumference of the two electrodes 2 twisted together, a lateral wrapping 22 made of various fiber materials, metal thin wires, or the like may be provided. This makes it possible to make a space around the first electrode 1 and the second electrode 2 coated with the spacer 3, so that the molten spacer 3 can be easily moved to the substrate 4. . When the lateral winding 22 is made of a conductive material such as a thin metal wire, the lateral winding 22 can also function as in the second electrode 2.

Next, a seventh embodiment of the present invention will be described with reference to FIG. In the case of the seventh embodiment, the first electrode 1 in the first embodiment has a stranded structure.

In addition, the structure other than this is made the same as the case of the said 1st Example, the same code | symbol is attached | subjected to the same part, and the description is abbreviate | omitted.

Also in this case, the same effects as in the first embodiment can be obtained. In addition, since the first electrode 1 has a twisted-pair structure, when the spacer 3 is melted during temperature sensing, the twist of the first electrode 1 and the twist of the twisted line are released. Since the two-way action of the thing is operated, the first electrode 1 and the second electrode 2 are easily accessible to each other, thereby enabling a more reliable and rapid detection.

In the case of such a stranded wire structure, the stainless steel wire and the interlocking wire may be twisted as appropriate. By doing so, the spring elasticity and flexibility can be adjusted so that the arrangement of the first electrode 1 and the process of attaching the terminal to the terminal can be facilitated. In particular, when the stainless steel wire and the interlocking wire are twisted, if the center is made of stainless steel and the interlocking wire is arranged on the outer periphery, the twisted wire becomes difficult to be released and the contact resistance with the terminal at the terminal ( I) is preferred because it is lowered.

Next, an eighth embodiment of the present invention will be described with reference to FIG. In the case of the eighth embodiment, the first electrode 1 and the second electrode 2 in the first embodiment have a stranded structure together, and the first electrode 1 and the second electrode 2 Both are covered with the spacers 3 and 3, respectively. In this case, the twisted direction of the stranded wires in the first electrode 1 and the second electrode 2 is reversed.

In addition, the structure other than this is made the same as the case of the said 1st Example, the same code | symbol is attached | subjected to the same part, and the description is abbreviate | omitted.

In this case as well, the same effects as in the first embodiment can be obtained. In addition, since the twisted directions of the twisted pairs in the first electrode 1 and the second electrode 2 are reversed, when the spacers 3 and 3 are melted at the time of temperature sensing, the first electrode 1 Both the twisting and unwinding of the twisted lines in the entirety of) not only work but also the unwinding directions of the twisted lines are close to each other, so that the first electrode 1 and the second electrode ( 2) becomes easier to approach each other, thereby enabling more reliable and rapid detection.

Next, a ninth embodiment of the present invention will be described with reference to FIG. In the case of the ninth embodiment, in the structure of the first embodiment, the substrate 4 and the film 5 are removed and the whole is covered with another spacer 3 '.

In addition, the structure other than this is made the same as the case of the said 1st Example, the same code | symbol is attached | subjected to the same part, and the description is abbreviate | omitted.

In this case as well, the same effects as in the first embodiment can be obtained, and the structure can be simplified by removing the base material 4 and the film 5.

On the other hand, in this embodiment, both of the spacer 3 and the spacer 3 'are melted at the time of temperature sensing, and the first electrode 1 and the second electrode 2 come into contact with each other.

Next, a tenth embodiment of the present invention will be described with reference to FIG. In the tenth embodiment, the second electrode 2 in the first embodiment is covered with a solid spacer 3.

In addition, the structure other than this is made the same as that of the said 1st Example, the same code | symbol is attached | subjected to the same part, and the description is abbreviate | omitted.

Also in this case, the same effects as in the first embodiment can be obtained.

In addition, this invention is not limited to the said 1st Example-10th Example.

For example, the first electrode 1 or the second electrode 2 may be provided with a heater function. As a result, the heating function and the temperature sensing function can be combined. As a specific aspect, for example, it is conceivable to use either the first electrode 1 or the second electrode 2 as a heater line. At this time, if one electrode is used as the sensor line, heating can be performed by the heater wire during normal temperature control by the sensor wire, and in the abnormal case, the heater wire and the sensor wire are brought into contact with each other. By detecting the potential difference, it can interrupt the energization. As a heater wire, resistance wires, such as a nichrome line and a kanthal line, and these wound around the outer periphery of tension-tension bodies, such as a cable core, etc. are mentioned. As the sensor wire, for example, a temperature sensing wire such as a Ni wire is wound around the outer periphery of the tension body such as a cable core. When the first electrode is used as a heater wire or a sensor wire, a material having spring elasticity may be used as the tensioning body.

However, when a conductive material is used for the tensioning body, it is necessary to apply insulation coating to the outer circumference.

In another aspect, a combination of the above-described sensor wire and heater wire is also considered. For example, an insulator is coated on the outer circumference of the sensor wire, a resistance wire is wound on the outer circumference thereof, and an outer insulator is coated on the outer circumference of the heater wire. And a temperature sensing wire wound around the wire, and a resistance wire and a temperature sensing wire wound on the outer periphery of the tension body such that they do not come into contact with each other.

In addition, a heater wire may be provided separately from the first electrode 1 and the second electrode 2. For example, if it is insulated from the 1st electrode 1 and the 2nd electrode 2 at the temperature below the target temperature, a heater wire is arrange | positioned between the 1st electrode 1 and the 2nd electrode 2. You may.

As described in detail above, the present invention relates to a temperature sensor that is conductive even when a part of the temperature sensor is exposed to a target temperature such as an abnormal high temperature and can detect a predetermined temperature, and is thin and excellent in flexibility. Therefore, the temperature sensing body can be attached to various sensing objects and has excellent operational reliability. In addition, for example, secondary batteries, hot water heaters, refrigerators, air conditioners, outdoor air conditioners, clothes dryers, rice cookers, hot plates, coffee makers, water heaters, ceramic heaters, petroleum heaters, and automatic It is contemplated for use in vending machines, thermal futons, floor heating panel heaters, copiers, facsimiles, dish dryers, flyers and the like.

Claims (9)

A long first electrode having a spring elasticity, a long second electrode disposed to be adjacent to the first electrode, in one direction A spacer made of an insulating material and arranged to insulate the first electrode and the second electrode under pressure, The insulation of the first electrode and the second electrode by the spacer is released by being exposed to a predetermined temperature, and thus the first electrode and the second electrode are brought into contact with each other so as to be conductive so as to sense a predetermined temperature. A temperature sensing body characterized by the above-mentioned. The method of claim 1, At least one of the first electrode and the second electrode is covered by the spacer. The method according to claim 1 or 2, And the first electrode and the second electrode are entangled with each other. The method according to any one of claims 1 to 3, At least one of the first electrode and the second electrode has a stranded wire structure, characterized in that the temperature sensing member. The method of claim 4, wherein Both the first electrode and the second electrode have a twisted pair structure, and the twisted directions thereof are opposite to each other. The method of claim 2, A temperature sensing member, characterized in that a space supporting member is provided on the outer periphery of the first electrode, the second electrode, and the spacer. The method of claim 6, And the space supporting member is made of a conductive material. The method of claim 2, The temperature sensing body, characterized in that a separate spacer is further coated on the outer circumference of the first electrode, the second electrode, and the spacer. The method according to any one of claims 1 to 8, And the spacer is melted at a predetermined temperature.

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