CN220511272U - Negative temperature coefficient heater wire and negative temperature coefficient sensor wire - Google Patents
Negative temperature coefficient heater wire and negative temperature coefficient sensor wire Download PDFInfo
- Publication number
- CN220511272U CN220511272U CN202322111028.XU CN202322111028U CN220511272U CN 220511272 U CN220511272 U CN 220511272U CN 202322111028 U CN202322111028 U CN 202322111028U CN 220511272 U CN220511272 U CN 220511272U
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- conductor
- winding conductor
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- wound
- temperature coefficient
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- 239000004020 conductor Substances 0.000 claims abstract description 133
- 238000004804 winding Methods 0.000 claims abstract description 125
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 230000004888 barrier function Effects 0.000 claims abstract description 11
- 230000035807 sensation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 239000013585 weight reducing agent Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
Landscapes
- Resistance Heating (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The utility model provides a negative temperature coefficient heater wire and a negative temperature coefficient sensor wire. The durability at the time of buckling can be improved, thereby preventing breakage. The device comprises: a winding core (21); a lower winding conductor (22) wound around the winding core (21); a temperature-sensitive resin (23) which is arranged around the winding core (21) and the lower winding conductor (22); an upper winding conductor (24) wound around the temperature-sensitive resin (23); a barrier layer (25) disposed around the temperature-sensitive resin (23) and the winding-up conductor (24); and an insulating resin (26) which is disposed around the barrier layer (25), wherein the diameter of the lower wound conductor (22) and the upper wound conductor (24) is 0.15mm or less when the lower wound conductor (22) and the upper wound conductor (24) are round wires, and the thickness of the lower wound conductor (22) and the upper wound conductor (24) is 0.15mm or less when the lower wound conductor and the upper wound conductor (24) are flat wires.
Description
Technical Field
The present utility model relates to a heater wire and a sensor wire having an NTC (negative temperature coefficient: negative temperature coefficient) function.
Background
NTC heater wires, NTC sensor wires are used in electro-thermal carpets, etc.
The NTC heater wire is capable of detecting the temperature of an electro-thermal carpet, an electro-thermal blanket, etc. throughout the length of the heater wire. In addition, the NTC sensor wire does not have a heater function, but is capable of detecting the temperature of an electric blanket, or the like.
Conventionally, an NTC heater wire of the utility model CN213755005U is known.
Such conventional NTC heater wires have priority in heat generation performance and NTC characteristics, and durability is not considered. Thus, the conductor may break.
The NTC sensor line has the same structure as the NTC heater line, and the conventional NTC sensor line preferentially senses and NTC characteristics, and durability is not considered. Thus, the conductor may break.
Disclosure of Invention
The present utility model has been made to solve the above problems, and an object thereof is to provide an NTC heater wire and an NTC sensor wire having improved durability.
In order to achieve the above object, the present utility model has the following structure.
That is, the NTC heater wire and the NTC sensor wire of the present utility model are characterized by comprising: a winding core; a lower winding conductor wound around the winding core; a temperature-sensitive resin disposed around the winding core and the lower winding conductor; an upper winding conductor wound around the temperature-sensitive resin; a barrier layer disposed around the temperature-sensitive resin and the winding-up conductor; and an insulating resin disposed around the barrier layer, wherein the diameter of the lower winding conductor and the upper winding conductor is 0.15mm or less when the lower winding conductor and the upper winding conductor are round wires, and the thickness of the lower winding conductor and the upper winding conductor is 0.15mm or less when the lower winding conductor and the upper winding conductor are flat wires.
By adopting this structure, durability at the time of buckling of the NTC heater wire or the NTC sensor wire can be improved, thereby preventing breakage of the lower winding conductor and the upper winding conductor.
In addition, the outer diameter of the NTC heater wire or the NTC sensor wire is also reduced by reducing the thickness of each conductor, so that the foreign body sensation during use of the electrothermal carpet, the electrothermal blanket, or the like can be reduced, and the weight can be reduced.
The lower wound conductor may be wound at intervals of 2mm or less.
With this structure, durability at the time of buckling of the NTC heater wire or the NTC sensor wire can also be improved, thereby preventing breakage of the lower winding conductor.
The upper wound conductor may be wound at intervals of 2mm or less.
With this structure, durability at the time of buckling of the NTC heater wire or the NTC sensor wire can also be improved, thereby preventing breakage of the upwind conductor.
Further, the winding direction of the lower winding conductor may be different from the winding direction of the upper winding conductor.
By thus making the winding direction of the lower winding conductor and the upper winding conductor different, the buckling resistance can be made good.
According to the NTC heater wire and the NTC sensor wire of the present utility model, durability at the time of buckling can be improved, thereby preventing breakage of the lower winding conductor and the upper winding conductor.
Drawings
Fig. 1 is an explanatory diagram showing the structure of an NTC heater wire in the case where the lower winding conductor and the upper winding conductor are round wires.
Fig. 2 is an explanatory diagram showing the structure of the NTC heater wire in the case where the lower winding conductor and the upper winding conductor are flat wires.
Detailed Description
Hereinafter, preferred embodiments of the NTC heater wire and the NTC sensor wire will be described in detail with reference to the accompanying drawings.
Fig. 1 is an NTC heater wire in the case where the lower winding conductor and the upper winding conductor are round wires.
A winding core 21 is disposed at the center of the NTC heater wire 10. The winding core 21 uses polyester resin, polyarylate fiber, aramid fiber, or the like.
Around the winding core 21, a lower winding conductor 22 is spirally wound. The lower winding conductor 22 uses copper, copper alloy, nickel chromium, or the like.
The lower winding conductor 22 is a round wire, and has a diameter phi of 0.15mm or less.
By setting the diameter of the lower winding conductor 22 to 0.15mm or less, the durability is not easily reduced even if the NTC heater wire 10 is repeatedly bent, and breakage of the lower winding conductor 22 can be prevented. In addition, the outer diameter of the NTC heater wire or the NTC sensor wire is also reduced by the reduction of the thickness of each conductor, and the effect of reducing the foreign body sensation during use of the electrothermal carpet, the electrothermal blanket, or the like, and realizing weight reduction is also achieved.
A temperature sensitive resin 23 is disposed around the winding core 21 and the lower winding conductor 22. The temperature sensitive resin 23 is a resin having an NTC (negative temperature coefficient: negative temperature coefficient) function, and has a property that the resistance value becomes small when the temperature becomes high. As the temperature sensitive resin 23, a resin obtained by adding a conductivity imparting material to a polymer resin such as PVC (polyvinyl chloride) or nylon is used.
Around the temperature sensitive resin 23, an upper winding conductor 24 is spirally wound. Copper, copper alloy, nickel chromium, etc. are used for the upper wound conductor 24.
The upper winding conductor 24 is a round wire, and has a diameter phi of 0.15mm or less.
By setting the diameter of the upper winding conductor 24 to 0.15mm or less, the durability is not easily reduced even if the NTC heater wire 10 is repeatedly bent, and breakage of the upper winding conductor 24 can be prevented. In addition, the outer diameter of the NTC heater wire or the NTC sensor wire is also reduced by the reduction of the thickness of each conductor, and the effect of reducing the foreign body sensation during use of the electrothermal carpet, the electrothermal blanket, or the like, and realizing weight reduction is also achieved.
A barrier layer 25 is disposed around the temperature sensitive resin 23 and the upper winding conductor 24. As the barrier layer 25, a PET (polyethylene terephthalate) film or the like is used.
An insulating resin 26 is disposed around the barrier layer 25. As the insulating resin 26, PVC (polyvinyl chloride) or the like is used.
As shown in fig. 1, the winding interval of the lower winding conductor 22 is preferably set to 2mm or less.
By setting the interval between the conductors of the lower winding conductor 22 to 2mm or less, the durability is not easily reduced even if the NTC heater wire 10 is repeatedly bent, and breakage of the lower winding conductor 22 can be prevented.
Similarly, as shown in fig. 1, the winding interval of the upper winding conductor 24 is preferably set to 2mm or less.
By setting the interval between the conductors of the upper winding conductor 24 to 2mm or less, the durability is not easily reduced even if the NTC heater wire 10 is repeatedly bent, and breakage of the upper winding conductor 24 can be prevented.
As shown in fig. 1, the winding direction of the lower winding conductor 22 and the winding direction of the upper winding conductor 24 may be different from each other. By reversing the winding direction of the lower winding conductor 22 and the upper winding conductor 24, the buckling resistance of the NTC heater wire 10 can be improved.
The winding direction may be a combination opposite to that of fig. 1.
Next, fig. 2 shows the NTC heater wire in the case where the lower winding conductor and the upper winding conductor are flat wires.
Unlike the wires of fig. 1, which are only the lower and upper wound conductors, the description of the structures other than the lower and upper wound conductors is omitted.
The lower wound conductor 22 of fig. 2 is a flat wire, and the thickness t thereof is 0.15mm or less.
By setting the thickness of the lower winding conductor 22 to 0.15mm or less, the durability is not easily reduced even if the NTC heater wire 10 is repeatedly bent, and breakage of the lower winding conductor 22 can be prevented. In addition, the outer diameter of the NTC heater wire or the NTC sensor wire is also reduced by the reduction of the thickness of each conductor, and the effect of reducing the foreign body sensation during use of the electrothermal carpet, the electrothermal blanket, or the like, and realizing weight reduction is also achieved.
The upwind conductor 24 of fig. 2 is a flat wire, and has a thickness t of 0.15mm or less.
By setting the thickness of the upper winding conductor 24 to 0.15mm or less, the durability is not easily reduced even if the NTC heater wire 10 is repeatedly bent, and breakage of the upper winding conductor 24 can be prevented. In addition, the outer diameter of the NTC heater wire or the NTC sensor wire is also reduced by the reduction of the thickness of each conductor, and the effect of reducing the foreign body sensation during use of the electrothermal carpet, the electrothermal blanket, or the like, and realizing weight reduction is also achieved.
As shown in fig. 2, the winding interval of the lower winding conductor 22 is preferably set to 2mm or less.
By setting the interval between the conductors of the lower winding conductor 22 to 2mm or less, the durability is not easily reduced even if the NTC heater wire 10 is repeatedly bent, and breakage of the lower winding conductor 22 can be prevented.
Similarly, as shown in fig. 2, the winding interval of the upper winding conductor 24 is preferably set to 2mm or less.
By setting the interval between the conductors of the upper winding conductor 24 to 2mm or less, the durability is not easily reduced even if the NTC heater wire 10 is repeatedly bent, and breakage of the upper winding conductor 24 can be prevented.
It is not necessary that the lower wound conductor 22 and the upper wound conductor 24 have the same wire shape, and for example, the lower wound conductor 22 may be a round wire, the upper wound conductor 24 may be a flat wire, the lower wound conductor 22 may be a flat wire, and the upper wound conductor 24 may be a round wire.
In the above description, the NTC heater wire is described, but the NTC sensor wire is also identical in structure, and therefore, the description of the NTC sensor wire is omitted.
In the case of using the above-described configuration as the NTC heater wire, the lower winding conductor 22 is used as the heater wire and the upper winding conductor 24 is used as the detection line of the resistance value, but in the case of using the above-described configuration as the NTC sensor wire, the lower winding conductor 22 and the upper winding conductor 24 are used as the signal wire, so that the NTC heater wire or the NTC sensor wire can be separately used by different use methods.
Claims (8)
1. A negative temperature coefficient heater wire is characterized in that,
the negative temperature coefficient heater wire has:
a winding core;
a lower winding conductor wound around the winding core;
a temperature-sensitive resin disposed around the winding core and the lower winding conductor;
an upper winding conductor wound around the temperature-sensitive resin;
a barrier layer disposed around the temperature-sensitive resin and the winding-up conductor; and
an insulating resin disposed around the barrier layer,
the diameter of the lower winding conductor and the upper winding conductor is not more than 0.15mm when the lower winding conductor and the upper winding conductor are round wires, and the thickness of the lower winding conductor and the upper winding conductor is not more than 0.15mm when the lower winding conductor and the upper winding conductor are flat wires.
2. The negative temperature coefficient heater wire according to claim 1, wherein,
the lower winding conductor is wound at intervals of 2mm or less.
3. The negative temperature coefficient heater wire according to claim 1 or 2, wherein,
the upper wound conductor is wound at intervals of 2mm or less.
4. The negative temperature coefficient heater wire according to claim 1, wherein,
the winding direction of the lower winding conductor is a direction different from the winding direction of the upper winding conductor.
5. A negative temperature coefficient sensor wire is characterized in that,
the negative temperature coefficient sensor line has:
a winding core;
a lower winding conductor wound around the winding core;
a temperature-sensitive resin disposed around the winding core and the lower winding conductor;
an upper winding conductor wound around the temperature-sensitive resin;
a barrier layer disposed around the temperature-sensitive resin and the winding-up conductor; and
an insulating resin disposed around the barrier layer,
the diameter of the lower winding conductor and the upper winding conductor is not more than 0.15mm when the lower winding conductor and the upper winding conductor are round wires, and the thickness of the lower winding conductor and the upper winding conductor is not more than 0.15mm when the lower winding conductor and the upper winding conductor are flat wires.
6. The negative temperature coefficient sensor line according to claim 5, wherein,
the lower winding conductor is wound at intervals of 2mm or less.
7. The negative temperature coefficient sensor line according to claim 5 or 6, characterized in that,
the upper wound conductor is wound at intervals of 2mm or less.
8. The negative temperature coefficient sensor line according to claim 5, wherein,
the winding direction of the lower winding conductor is a direction different from the winding direction of the upper winding conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322111028.XU CN220511272U (en) | 2023-08-07 | 2023-08-07 | Negative temperature coefficient heater wire and negative temperature coefficient sensor wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322111028.XU CN220511272U (en) | 2023-08-07 | 2023-08-07 | Negative temperature coefficient heater wire and negative temperature coefficient sensor wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220511272U true CN220511272U (en) | 2024-02-20 |
Family
ID=89870188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322111028.XU Active CN220511272U (en) | 2023-08-07 | 2023-08-07 | Negative temperature coefficient heater wire and negative temperature coefficient sensor wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220511272U (en) |
-
2023
- 2023-08-07 CN CN202322111028.XU patent/CN220511272U/en active Active
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