Heating sheet with composite structure

Abstract

The utility model provides a heating sheet with a composite structure, which comprises a barrier layer / a first etching sheet, a second etching sheet and a protective layer, and is characterized in that the first etching sheet and the second etching sheet are respectively arranged on the end surfaces of the two sides of the barrier layer; the two protective layers are arranged on the two sides of the barrier layer respectively and wrap the first etching sheet and the second etching sheet; and the first etching sheet and the second etching sheet are connected in series. According to the heating sheet, the heating efficiency can be improved through the arrangement of the first etching sheet and the second etching sheet, meanwhile, the adopted first etching sheet and the second etching sheet do not need to be wound, the process is relatively simple, and errors caused by winding can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heating sheets, in particular to a heating sheet with a composite structure. Background Art

[0002] Most existing heating sheets adopt the following structure: by winding a resistance wire on a mica substrate, this structure may have the following disadvantages:

[0003] First, the winding method is used. Due to the error in the winding process, in order to prevent a short circuit between the two resistance wires, the winding spacing is too large, and the heating effect is not good;

[0004] Second, the winding method has a relatively complicated process structure and the production efficiency of the heating sheet is not high.

[0005] In view of this, the inventor specially designed a heating sheet with a composite structure, and this case was thus generated. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose a heating sheet with a composite structure, which can improve the heating efficiency by setting a first etched sheet and a second etched sheet, and the first etched sheet and the second etched sheet do not need to be wound, so the process is relatively simple and the error caused by winding can be avoided, thus overcoming the disadvantages of the current winding structure.

[0007] A composite heating sheet provided by the utility model comprises:

[0008] Barrier layer;

[0009] A first etched sheet and a second etched sheet, wherein the first etched sheet and the second etched sheet are respectively arranged on end surfaces at both sides of the barrier layer;

[0010] A protective layer, wherein the protective layer is provided with two layers, which are respectively provided on both sides of the barrier layer and cover the first etching sheet and the second etching sheet;

[0011] The first etching sheet and the second etching sheet are connected in series.

[0012] The heating sheet of the utility model can improve the heating efficiency by arranging the first etched sheet and the second etched sheet. Meanwhile, the first etched sheet and the second etched sheet do not need to be wound, so the process is relatively simple and the error caused by winding can be avoided.

[0013] In some embodiments of the utility model, at least one barrier layer is provided, the number of the first etching sheets is consistent with the number of barrier layers, wherein the two side end surfaces of one barrier layer respectively have the first etching sheet and the second etching sheet, and the two side end surfaces of the remaining barrier layers all have the first etching sheet.

[0014] In some embodiments of the utility model, the barrier layer is provided with two layers, the first etched sheet is provided with two layers, the heating sheet comprises a protective layer, a first etched sheet, a barrier layer, a first etched sheet, a barrier layer, a second etched sheet and a protective layer in sequence, and the two first etched sheets are connected in series and then connected in series with the second etched sheet.

[0015] In some embodiments of the utility model, the barrier layer and the first etched sheet are each provided with one layer, and the heating sheet sequentially comprises a protective layer, a first etched sheet, a barrier layer, a second etched sheet and a protective layer, and the first etched sheet is connected in series with the second etched sheet.

[0016] In some embodiments of the present invention, the protective layer is made of a semi-sustainable silicone layer; and the barrier layer is made of a twin-sustainable silicone layer.

[0017] In some embodiments of the present invention, the first etched sheet includes a first heating portion and two first connecting electrodes respectively disposed at two ends of the first heating portion and arranged side by side.

[0018] In some embodiments of the present invention, the second etched sheet includes a second heating portion and a third heating portion, two second connecting electrodes respectively connected to one end of the second heating portion and one end of the third heating portion and arranged side by side, and two third connecting electrodes respectively connected to the other end of the second heating portion and the other end of the third heating portion and arranged side by side;

[0019] In some embodiments of the present invention, the two first connecting electrodes are respectively connected to the two second connecting electrodes.

[0020] In some embodiments of the present invention, the intervals between the first heating portion, the second heating portion and the third heating portion are 0.1-0.5 mm.

[0021] In some embodiments of the present invention, an avoidance gap for avoiding the connection between the first connection electrode and the second connection electrode is provided on the barrier layer.

[0022] In some embodiments of the present invention, the heating sheet further includes two wires for connecting to the third connecting electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] in:

[0025] Figure 1 It is an exploded view of the heating sheet of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the first etching sheet of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the second etching sheet of the utility model;

[0028] Figure 4 It is a top view of the second etched sheet of the utility model;

[0029] Figure 5 This is an exploded view of another heating plate structure of the utility model;

[0030] Figure 6 It is an experimental schematic diagram of Example 1 of the utility model.

[0031] Description of labels:

[0032] 10. Barrier layer; 11. Avoidance gap; 20. First etched sheet; 21. First heating portion; 22. First connecting electrode; 30. Second etched sheet; 31. Second heating portion; 32. Second heating portion; 33. Second connecting electrode; 34. Second connecting electrode; 40. Protective layer; 50. Wire. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Example

[0034] See also Figures 1 to 4 , is a composite structure heating sheet as embodiment 1 of the utility model, including a barrier layer 10 / a first etched sheet 20, a second etched sheet 30, and a protective layer 40, wherein the first etched sheet 20 and the second etched sheet 30 are respectively arranged on the end surfaces on both sides of the barrier layer 10; the protective layer 40 is provided with two layers, which are respectively arranged on both sides of the barrier layer 10 and cover the first etched sheet 20 and the second etched sheet 30; the first etched sheet 20 and the second etched sheet 30 are connected in series. The heating sheet of the utility model can improve the heating efficiency by arranging the first etched sheet 20 and the second etched sheet 30, and the first etched sheet 20 and the second etched sheet 30 do not need to be wound, the process is relatively simple and the error caused by winding can be avoided.

[0035] The protective layer 40 is made of semi-raw silicone layer; the barrier layer 10 is made of twin silicone layer. The barrier layer 10 is provided with at least one layer, and the number of the first etched sheets 20 is consistent with the number of the barrier layers 10, wherein the end faces of both sides of one barrier layer 10 have the first etched sheet 20 and the second etched sheet 30 respectively, and the end faces of both sides of the remaining barrier layers 10 have the first etched sheet 20, that is, the barrier layer 10 is provided with at least one layer, the number is M; the number of the first etched sheet 20 is also M, and the number of the second etched sheet 30 is 1; this embodiment adopts a double-layer structure, specifically, the barrier layer 10 and the first etched sheet 20 are both provided with one layer, and the heating sheet includes the protective layer 40, the first etched sheet 20, the barrier layer 10, the second etched sheet 30 and the protective layer 40 in sequence, and the first etched sheet 20 is connected in series with the second etched sheet 30 in series.

[0036] The first etched sheet 20 includes a first heating portion 21, two first connecting electrodes 22 respectively arranged at both ends of the first heating portion 21 and arranged side by side; the second etched sheet 30 includes a second heating portion and a third heating portion, two second connecting electrodes respectively connected to one end of the second heating portion and one end of the third heating portion and arranged side by side, and two third connecting electrodes respectively connected to the other end of the second heating portion and the other end of the third heating portion and arranged side by side; the two first connecting electrodes 22 are respectively connected to the two second connecting electrodes, so that the first etched sheet 20 and the second etched sheet 30 are connected in series.

[0037] The spacing between the first heating part 21, the second heating part and the third heating part is 0.1-0.5mm. Preferably, the present embodiment can adopt a spacing of 0.2mm, which not only ensures the heating effect while ensuring that the spacing between the first etched sheet 20 and the second etched sheet 30 is large enough.

[0038] The barrier layer 10 is provided with an escape notch 11 for escaping the connection between the first connection electrode 22 and the second connection electrode, so as to facilitate welding of the first electrode with the first electrode or the first electrode with the second electrode. The heating sheet also includes two wires 50 for connecting with the third connection electrode, so as to power the heating sheet.

[0039] The preparation method of the heating sheet of this embodiment is as follows:

[0040] First, cut two pieces of semi-raw silicone cloth and one piece of twin silicone cloth to correspond to two protective layers 40 and one barrier layer 10 → paste the first etched sheet 20 on one of the protective layers 40 → paste the barrier layer 10 and paste the second etched sheet 30 → solder the upper and lower first etched sheet 20 and the second etched sheet 30 (that is, the two first connection electrodes 22 are welded to the two second connection electrodes) → solder the two wires 50 to the two third connection electrodes respectively → paste another protective layer 40 and vulcanize it up and down → conduct power-on test; adjust the voltage to 220v, the power is 20w, and the temperature of the double-layer heating plate is stable at about 147 degrees after 15 minutes of power-on. For details, see Figure 6 . Example

[0041] See also Figure 5 , is a heating sheet of a composite structure as embodiment 2 of the utility model. The difference between this embodiment and embodiment 1 is that the number of layers of the barrier layer 10 and the first etched sheet 20 is different. Specifically, the barrier layer 10 is provided with two layers, and the first etched sheet 20 is provided with two layers. The heating sheet comprises a protective layer 40, a first etched sheet, a barrier layer, a first etched sheet, a barrier layer, a second etched sheet 30 and a protective layer 40 in sequence. The two first etched sheets 20 are connected in series and then connected in series with the second etched sheet 30. Preferably, the spacing between the first heating part 21, the second heating part and the third heating part in this embodiment can be 0.3 mm. If a larger resistance is required, the spacing is reduced.

[0042] To sum up, the heating sheet of the utility model can improve the heating efficiency by setting the first etched sheet and the second etched sheet. At the same time, the first etched sheet and the second etched sheet do not need to be wound, the process is relatively simple and the error caused by winding can be avoided. Furthermore, the number of layers of the first etched sheet of the utility model can be adjusted as needed, and heating sheets with different spacing or resistance can be obtained according to actual needs.

[0043] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A composite heating sheet, characterized in that: include: Barrier layer (10); A first etched sheet (20) and a second etched sheet (30), wherein the first etched sheet (20) and the second etched sheet (30) are respectively arranged on end surfaces on both sides of the barrier layer (10); A protective layer (40), wherein the protective layer (40) is provided in two layers, and is respectively provided on both sides of the barrier layer (10) and covers the first etched sheet (20) and the second etched sheet (30); The first etched sheet (20) and the second etched sheet (30) are connected in series.

2. The composite heating sheet according to claim 1, characterized in that: The barrier layer (10) is provided with at least one layer, the number of the first etched sheets (20) is consistent with the number of the barrier layers (10), one of the barrier layers (10) has a first etched sheet (20) and a second etched sheet (30) on both side end surfaces respectively, and the other barrier layers (10) have a first etched sheet (20) on both side end surfaces.

3. A composite heating sheet according to claim 2, characterized in that: The barrier layer (10) is provided with two layers, the first etched sheet (20) is provided with two layers, the heating sheet comprises in sequence a protective layer (40), a first etched sheet, a barrier layer, a first etched sheet, a barrier layer, a second etched sheet (30) and a protective layer (40), and the two first etched sheets are connected in series and then connected in series with the second etched sheet (30).

4. The composite heating sheet according to claim 1, characterized in that: The barrier layer (10) and the first etched sheet (20) are each provided with a layer, and the heating sheet comprises a protective layer (40), a first etched sheet (20), a barrier layer (10), a second etched sheet (30), and a protective layer (40) in sequence, and the first etched sheet (20) is connected in series with the second etched sheet (30).

5. The composite heating sheet according to claim 1, characterized in that: The protective layer (40) is made of a semi-saturated silica gel layer; and the barrier layer (10) is made of a double-saturated silica gel layer.

6. The composite structure heating sheet according to claim 1, characterized in that: The first etched sheet (20) comprises a first heating portion (21), and two first connecting electrodes (22) respectively arranged at two ends of the first heating portion (21) and arranged side by side.

7. A composite structure heating sheet according to claim 6, characterized in that: The second etched sheet (30) comprises a second heating portion and a third heating portion, two second connecting electrodes respectively connected to one end of the second heating portion and one end of the third heating portion and arranged side by side, and two third connecting electrodes respectively connected to the other end of the second heating portion and the other end of the third heating portion and arranged side by side.

8. A composite structure heating sheet according to claim 7, characterized in that: The two first connecting electrodes (22) are respectively connected to the two second connecting electrodes.

9. The composite structure heating sheet according to claim 7, characterized in that: The barrier layer (10) is provided with an avoidance notch (11) for avoiding the connection between the first connection electrode (22) and the second connection electrode.

10. A composite structure heating sheet according to claim 7, characterized in that: The heating sheet also includes two wires (50) for connecting to the third connecting electrode.

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