Heating wire structure, heating cushion and heating seat

Abstract

The utility model relates to the technical field of heating and temperature measuring, in particular to a heating wire structure, a heating pad and a heating seat, the heating wire structure comprises a heating wire and a temperature measuring wire, the temperature measuring wire and the heating wire are adjacently arranged, so that the temperature measuring wire can accurately acquire the temperature of the heating wire, the temperature measuring accuracy is improved, and the heating wire is prevented from being damaged. The risk of overheating combustion of the heating wire far away from the thermistor area is reduced, and the safety and reliability of the automobile seat heating pad are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating and measuring temperature, in particular to a heating wire structure, a heating pad and a heating seat. Background Art

[0002] Existing car seat heating pads generally use alloy heating wires as heating devices, and use single-point thermistors for temperature measurement to achieve temperature control. In actual applications, the heating area required for car seat cushions and face covers is large, and single-point temperature measurement can only detect the temperature of a part of the area, so that when its temperature control circuit and software work normally, there is still a large risk of thermal runaway, resulting in thermal runaway in areas far from the thermistor, and even the risk of burning. At this time, the safety and reliability of car seat heating pads are low. Summary of the invention

[0003] The embodiments of the utility model provide a heating wire structure, a heating pad and a heated seat to solve the problem of low safety and reliability of heating pads for automobile seats in the prior art.

[0004] In a first aspect, the utility model provides a heating wire structure, comprising: a heating wire and a temperature measuring wire; wherein:

[0005] The temperature measuring line is arranged adjacent to the heating line, and the temperature measuring line is used to collect the temperature of the heating line.

[0006] In one embodiment, the temperature measuring wires are arranged in parallel along the extending direction of the heating wires.

[0007] In one embodiment, there are a plurality of heating wires, each of which is arranged around the temperature measuring wire and parallel to the temperature measuring wire.

[0008] In one embodiment, the material of the temperature measuring wire is a material with a high temperature coefficient of resistance.

[0009] In one embodiment, the temperature measuring wire comprises: a wire core and a temperature measuring wire;

[0010] The temperature measuring wire is wound on the wire core, and two ends of the temperature measuring wire are used to output temperature measuring signals.

[0011] In one embodiment, the core is a tensile fiber.

[0012] In one embodiment, the heating wire structure further includes an outer sheath for wrapping the heating wire and the temperature measuring wire.

[0013] In a second aspect, the present invention provides a heating pad, wherein the heating pad is provided with a heating wire structure as described in any one of the first aspects above;

[0014] The heating wire structure is arranged between the base layer and the cover layer.

[0015] In one embodiment, the heating pad further comprises: double-sided tape;

[0016] The first adhesive surface of the double-sided adhesive tape is used for adhering to the base layer, and the second adhesive surface of the double-sided adhesive tape is used for adhering to the external circuit, so as to fix the heating pad on the external circuit.

[0017] In a third aspect, the present invention provides a heated seat, wherein the heated seat is provided with a heating pad as described in any one of the second aspects above.

[0018] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0019] The heating wire structure of the utility model comprises: a heating wire and a temperature measuring wire. By arranging the temperature measuring wire and the heating wire adjacent to each other, the temperature measuring wire can accurately collect the temperature of the heating wire, thereby improving the accuracy of temperature measurement, reducing the risk of overheating and burning of the heating wire far away from the thermistor area, and improving the safety and reliability of the car seat heating pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of a heating wire structure provided by an embodiment of the utility model;

[0022] Figure 2 It is another structural schematic diagram of a heating wire structure provided by an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a temperature measuring line provided by an embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of a heating pad provided by an embodiment of the utility model;

[0025] Figure 5 This is a circuit diagram of a heated seat provided by an embodiment of the utility model;

[0026] Among them, 01, heating wire, 02, temperature measuring wire, 03, outer skin, 10, temperature measuring wire, 11, wire core, 100, heating wire structure, 200, base layer, 300, covering layer, 400, double-sided tape, 101, backrest heating part of the heated seat, 102, seat cushion heating part of the heated seat, 103, external terminal. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0031] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0032] In one embodiment, if Figure 1 As shown, a schematic structural diagram of a heating wire structure 100 is provided, including: a heating wire 01 and a temperature measuring wire 02; wherein the temperature measuring wire 02 is arranged adjacent to the heating wire 01, and the temperature measuring wire 02 is used to collect the temperature of the heating wire 01.

[0033] In practical applications, the material of the temperature measuring wire 02 can be a material with a high temperature coefficient of resistance, such as pure copper, Ti or Ti alloy, etc., which is not specifically limited here; since the resistance of alloy materials is relatively high, the heating wire 01 can be an alloy material in practical applications to facilitate the control of the resistance and maximum heating power of the heating wire 01. The practical application is not limited to this, and it can be determined according to the specific application environment, which is within the protection scope of this application.

[0034] The working process of the above-mentioned heating wire structure 100 is as follows: when the heating wire structure 100 is working, the current passes through the terminals S3 and S4 of the heating wire 01 and passes through the heating wire 01, so that the heating wire 01 generates heat, and the temperature measuring wire 02 collects the temperature of the heating wire 01 and outputs the corresponding temperature signal to the external circuit through the terminals S1 and S2, so that the external circuit can control the working state of the heating wire 01 according to the temperature of the heating wire 01.

[0035] In practical applications, since the temperature measuring wire 02 has a high resistance temperature coefficient, when the heating wire 01 generates heat and continues to generate heat, the temperature of the temperature measuring wire 02 will increase accordingly, and the resistance of the temperature measuring wire 02 will also increase proportionally. The external circuit can measure the temperature by detecting the change in the resistance of the temperature measuring wire 02, thereby preventing thermal runaway.

[0036] The heating wire structure 100 of this embodiment includes: a heating wire 01 and a temperature measuring wire 02. By arranging the temperature measuring wire 02 and the heating wire 01 adjacent to each other, the temperature measuring wire 02 can accurately collect the temperature of the heating wire 01, thereby improving the accuracy of temperature measurement, reducing the risk of overheating and burning of the heating wire far away from the thermistor area, and improving the safety and reliability of the car seat heating pad.

[0037] In one embodiment, the temperature measuring wires 02 in the heating wire structure 100 can be arranged in parallel along the extending direction of the heating wires 01 .

[0038] Optionally, the heating wire 01 and the temperature measuring wire 02 can be of equal length so that the temperature measuring wire 02 can monitor the global temperature of the heating wire 01, thereby avoiding the situation where the heating wire 01 and the temperature measuring wire 02 are of unequal lengths, the temperature measuring wire 02 cannot collect the local temperature of the heating wire 01, or the temperature measuring wire 02 is too long and the collected temperature is inaccurate, resulting in the local temperature of the heating wire 01 being too high and thermal runaway, thereby improving the safety and reliability of the heating wire structure 100.

[0039] The heating wire structure 100 of this embodiment arranges the temperature measuring wire 02 in parallel along the extending direction of the heating wire 01 so that the temperature measuring wire 02 can accurately collect the temperature of the heating wire 01, further improving the accuracy of temperature collection by the temperature measuring wire 02.

[0040] In one embodiment, if Figure 2 As shown, a schematic diagram of the structure of a heating wire structure 100 is provided. Figure 1 On the basis of the heating wire structure 100 shown, there are multiple heating wires 01 in the heating wire structure 100 , and each heating wire 01 is arranged around the temperature measuring wire 02 and is arranged in parallel with the temperature measuring wire 02 .

[0041] The working process of the above-mentioned heating wire structure 100 is as follows: when the heating wire structure 100 is working, the current passes through each heating wire 01 so that the heating wire 01 generates heat, the temperature measuring wire 02 collects the temperature of the heating wire 01, and outputs the corresponding temperature signal to the external circuit, so that the external circuit can control the working state of each heating wire 01 according to the temperature of the heating wire 01 collected by the temperature measuring wire 02.

[0042] The heating wire structure 100 of the present embodiment improves the heating efficiency of the heating wire structure 100 by adopting a plurality of heating wires 01, and arranges each heating wire 01 in parallel with and around the temperature measuring wire 02, so that only one heating wire 01 is used to collect the temperature of each temperature measuring wire 02, and then the external circuit can control the working state of each heating wire 01 according to the temperature of the heating wire 01 collected by the temperature measuring wire 02, thereby improving the accuracy of temperature measurement, reducing the risk of overheating and combustion of the heating wire far away from the thermistor area, and improving the safety and reliability of the car seat heating pad.

[0043] In one embodiment, the temperature measuring line 02 is as follows: Figure 3 As shown, it includes: a wire core 11 and a temperature measuring wire 10; wherein the temperature measuring wire 10 is wound on the wire core 11, and two ends of the temperature measuring wire 10 are used to output temperature measuring signals.

[0044] In practical applications, since the elongation of tensile fibers is relatively low, tensile fibers can be used as the wire core 11 to improve the tensile and bending resistance of the temperature measuring wire 02, so that the temperature measuring wire 10 is not easily deformed during the tensile process, thereby affecting the temperature measurement accuracy. Specifically, the tensile fibers can be non-metallic materials, which are not specifically limited here; Figure 3As shown, the temperature measuring wire 10 can also be wound on the wire core 11 in a spiral winding manner to further improve the resistance and overall resistance of the temperature measuring wire 10, thereby facilitating detection and improving the acquisition accuracy of the temperature measuring wire 10. The actual application is not limited to this, and it depends on the specific application environment, which is within the protection scope of this application.

[0045] The heating wire structure 100 of this embodiment, wherein the temperature measuring wire 02 includes a wire core 11 and a temperature measuring wire 10, and the temperature measuring wire 10 is fixed on the wire core 11 by winding, so as to increase the resistance and temperature acquisition accuracy of the temperature measuring wire 10, and further improve the temperature measurement accuracy of the temperature measuring wire 10; and by winding the temperature measuring wire 10 on the wire core 11, the bending and tensile properties of the temperature measuring wire 02 are improved, so that the temperature measuring wire 10 inside the heating wire structure 100 is not easy to produce plastic deformation during the tension process to affect the temperature measurement accuracy, thereby improving the safety and reliability of the heating wire structure 100.

[0046] In one embodiment, if Figure 2 As shown, the heating wire structure 100 further includes an outer skin 03 for wrapping the heating wire 01 and the temperature measuring wire 02 .

[0047] The heating wire structure 100 of the present embodiment wraps the heating wire 01 and the temperature measuring wire 02 in an outer skin 03 so as to fix the heating wire 01 and the temperature measuring wire 02 through the outer skin 03, thereby preventing the heating wire 01 or the temperature measuring wire 02 from moving and affecting the temperature measurement accuracy of the temperature measuring wire 02, thereby improving the safety and reliability of the heating wire structure 100.

[0048] In a second embodiment, if Figure 4 As shown, a schematic structural diagram of a heating pad is provided, in which a heating wire structure 100 as described in any one of the first embodiments described above is provided, and the heating wire structure 100 is provided between a base layer 200 and a cover layer 300 .

[0049] In practical applications, non-woven fabric, 3D mesh fabric or sponge can be used as the base layer 200, and polypropylene and acrylic ester can be used to form the covering layer 300. The practical application is not limited to this and depends on the specific application environment. All of them are within the protection scope of this application.

[0050] Specifically, the heating pad can be applied to car seats, massage seats, stools or electric car seats, and can also be used on beds to achieve the corresponding heating function. The actual application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0051] The heating pad of this embodiment adopts the heating wire structure 100 as described in any one of the first embodiments above, so that the temperature measuring wire 02 can accurately collect the temperature of the heating wire 01, thereby improving the accuracy of temperature measurement, reducing the risk of overheating and burning of the heating wire far away from the thermistor area, and improving the safety and reliability of the heating pad.

[0052] In one embodiment, optionally, Figure 4 As shown, the heating pad also includes: double-sided tape 400; wherein, the first adhesive surface of the double-sided tape 400 is used to adhere to the base layer 200, and the second adhesive surface of the double-sided tape 400 is used to adhere to the external circuit to fix the heating pad on the external circuit.

[0053] The heating wire structure 100 of this embodiment uses double-sided adhesive 400 to fix the heating pad on the external circuit to prevent the heating pad from moving and affecting the user experience.

[0054] In a third embodiment, if Figure 5 As shown, a structural schematic diagram of a heated seat is provided, in which a heating pad as described in any one of the second aspects above is provided.

[0055] Among them, 101 is the backrest heating part of the heated seat, 102 is the cushion heating part of the heated seat, and 103 is an external terminal for connecting an external circuit. The actual application is not limited to this, depending on the specific application environment, and all are within the protection scope of this application.

[0056] The heated seat of this embodiment is provided with a heating pad as described in any one of the second aspects above, so that the temperature measuring line 02 can accurately collect the temperature of the heating line 01, thereby improving the accuracy of temperature measurement, reducing the risk of overheating and burning of the heating line far away from the thermistor area, and improving the safety and reliability of the heated seat.

[0057] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A heating wire structure, characterized in that: include: Heating wire and temperature measuring wire; among them, The temperature measuring line is arranged adjacent to the heating line, the temperature measuring line is arranged in parallel along the extending direction of the heating line, and the temperature measuring line is used to collect the temperature of the heating line.

2. The heating wire structure according to claim 1, characterized in that: There are multiple heating wires, and each of the heating wires is arranged around the temperature measuring wire and is arranged in parallel with the temperature measuring wire.

3. The heating wire structure according to claim 1, characterized in that: The material of the temperature measuring wire is a material with a high temperature coefficient of resistance.

4. The heating wire structure according to any one of claims 1 to 3, characterized in that: The temperature measuring wire comprises: a wire core and a temperature measuring wire; The temperature measuring wire is wound on the wire core, and two ends of the temperature measuring wire are used to output temperature measuring signals.

5. The heating wire structure according to claim 4, characterized in that: The wire core is tensile-resistant fiber.

6. The heating wire structure according to any one of claims 1 to 3, characterized in that: The heating wire structure also includes an outer skin for wrapping the heating wire and the temperature measuring wire.

7. A heating pad, characterized in that: The heating pad is provided with a heating wire structure according to any one of claims 1 to 6; The heating wire structure is arranged between the base layer and the cover layer.

8. The heating pad according to claim 7, characterized in that The heating pad also includes: double-sided tape; The first adhesive surface of the double-sided adhesive tape is used for adhering to the base layer, and the second adhesive surface of the double-sided adhesive tape is used for adhering to the external circuit, so as to fix the heating pad on the external circuit.

9. A heated seat, characterized in that: The heated seat is provided with a heating pad as described in any one of claims 7 to 8.

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