Heating film with high ductility

Abstract

The utility model discloses a heating film with strong ductility, which comprises a first base film, a second base film, a heating unit, an edge sealing strip frame and a protective component, the second base film is arranged at the top of the first base film, the heating unit is arranged between the first base film and the second base film, and the first base film and the second base film are used for insulating and protecting the heating unit. The heating unit comprises a protective sleeve, a resistance wire and a connecting wire, the protective sleeve is connected between the first base film and the second base film in an S-shaped bending mode, the resistance wire is arranged in the protective sleeve in an S-shaped bending mode, and one end of the connecting wire is connected with the resistance wire. The first base film, the second base film, the heating unit and the protection assembly are used in a matched mode, the protection sleeve and the resistance wire are arranged in the S-shaped bending shape, and therefore when the first base film and the second base film are stretched by tensile force, the protection sleeve and the resistance wire can release pre-stress in the transverse direction and the longitudinal direction respectively, and the pre-stress effect is improved. Therefore, the condition that the resistance wire is snapped is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heating film, especially a heating film with strong ductility. BACKGROUND

[0002] The heating film is a kind of thin film material that can generate heat, usually combined by conductive material and high-temperature stable polymer, when current is applied, the heating film will generate heat energy, and transfer the heat energy to the nearby object or space, so as to achieve the purpose of heating.

[0003] The existing heating film is usually composed of two base films and resistance wires, the resistance wires are arranged between the two base films, since the base film is usually made of extendable insulating film, when the base film is pulled, the base film can extend to a certain extent, so as to avoid the direct fracture of the base film, but the resistance wires are usually made of metal material, so when the base film is pulled and extended, the resistance wires will be broken, so the heating film is damaged, and there is a certain defect. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a heating film with strong ductility to solve the problems in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a heating film with strong ductility, comprising:

[0006] The first base film and the second base film are arranged on the top of the first base film.

[0007] The heating unit is arranged between the first base film and the second base film, and the first base film and the second base film are used for insulating and protecting the heating unit, and the heating unit comprises:

[0008] The protective sleeve is S-bent and connected between the first base film and the second base film.

[0009] The resistance wire is S-bent and arranged in the interior of the protective sleeve.

[0010] One end of the connecting line is connected with the resistance wire, the connecting line is connected with the external power supply, and the connecting line is used for power supply to the resistance wire.

[0011] Preferably, the heating unit further comprises:

[0012] The first release part is formed by the bending part of the protective sleeve, and the first release part is used for releasing the longitudinal prestress of the heating film.

[0013] The second release section is formed at the bend of the resistance wire and is used to release the lateral prestress of the heating film.

[0014] Preferred options also include:

[0015] An edge sealing frame is connected between a first base film and a second base film, and the protective sleeve is located inside the edge sealing frame;

[0016] A protective component is disposed inside the edge sealing strip frame and is used to protect the heating unit.

[0017] Preferably, the protective component includes a filler colloid that fills the gap between the edge sealing strip and the protective sleeve, and the filler colloid is connected between the first base film and the second base film.

[0018] Preferably, the protective component includes:

[0019] The first adhesive strip is connected between the first base film and the second base film, and the first adhesive strip is disposed at the bending gap of the protective sleeve;

[0020] The second adhesive strip is connected between the first base film and the second base film, and the side of the second adhesive strip is connected to the edge sealing strip frame.

[0021] Preferably, the protective component further includes:

[0022] The mounting groove is formed at the top of the second adhesive strip;

[0023] A connecting block, which is connected to the end of the mounting groove cavity;

[0024] A protective pull wire is provided inside the mounting groove, and the end of the protective pull wire is fixedly connected to the connecting block.

[0025] The technical effects and advantages of this utility model are as follows:

[0026] This invention utilizes the combined use of a first base film, a second base film, a heating unit, and a protective component. The heating unit includes a protective sleeve and a resistance wire, both of which are S-shaped. This allows the protective sleeve and the resistance wire to release prestress in the transverse and longitudinal directions, respectively, when the first and second base films are stretched under tension, thus preventing the resistance wire from breaking. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0028] Figure 2 This is a top-view internal structure diagram of the first embodiment of the present invention.

[0029] Figure 3 This is a top-view internal structure diagram of the second embodiment of the present invention.

[0030] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0031] In the diagram: 1. First base film; 2. Second base film; 3. Sealing strip frame; 4. Heating unit; 41. Protective sleeve; 42. Resistance wire; 43. Connecting wire; 44. First release part; 45. Second release part; 5. Protective component; 51. Filling colloid; 52. First adhesive strip; 53. Second adhesive strip; 54. Mounting groove; 55. Protective pull wire; 56. Connecting block. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] This utility model provides, for example Figures 1-2 The illustrated heating film with high extensibility includes a first base film 1, a second base film 2, a heating unit 4, a sealing strip 3, and a protective component 5. The second base film 2 is disposed on top of the first base film 1, and the heating unit 4 is disposed between the first base film 1 and the second base film 2. The first base film 1 and the second base film 2 are used to insulate and protect the heating unit 4. Both the first base film 1 and the second base film 2 are made of extensible insulating film material. The heating unit 4 includes a protective sleeve 41, a resistance wire 42, and a connecting wire 43. The protective sleeve 41 is S-shaped. The resistance wire 42 is connected between the first base film 1 and the second base film 2. It is arranged in an S-shape inside the protective sleeve 41. The protective sleeve 41 is a sleeve film, so the resistance wire 42 can slide relative to the protective sleeve 41 to a certain extent. This allows the protective sleeve 41 and the resistance wire 42 to release prestress to a certain extent, preventing the resistance wire 42 from breaking when the first base film 1 and the second base film 2 are stretched under tension. One end of the connecting wire 43 is connected to the resistance wire 42, and the connecting wire 43 is connected to an external power source to supply power to the resistance wire 42.

[0035] In particular, the heating unit 4 also includes a first release part 44 and a second release part 45. The first release part 44 is formed by the bend in the protective sleeve 41 and is used to release the longitudinal prestress of the heating film. The second release part 45 is formed by the bend in the resistance wire 42 and is used to release the transverse prestress of the heating film. Figure 2 As shown, when the first base film 1 and the second base film 2 are subjected to longitudinal tension, the first release part 44 of the protective sleeve 41 bends, which can release the prestress of the resistance wire 42 and prevent the resistance wire 42 from being damaged by longitudinal tension. When the first base film 1 and the second base film 2 are subjected to lateral tension, the second release part 45 of the resistance wire 42 bends, which can release the prestress of the resistance wire 42 and prevent the resistance wire 42 from being damaged by lateral tension.

[0036] Furthermore, the sealing frame 3 is connected between the first base film 1 and the second base film 2, the protective sleeve 41 is located inside the sealing frame 3, and the protective component 5 is disposed inside the sealing frame 3. The protective component 5 is used to protect the heating unit 4. The protective component 5 includes a filling colloid 51, which fills the gap between the sealing frame 3 and the protective sleeve 41. The filling colloid 51 is connected between the first base film 1 and the second base film 2. The filling colloid 51 is made of silicone material, which not only ensures the stability of the connection between the first base film 1 and the second base film 2, but also does not affect the extensibility of the first base film 1 and the second base film 2. Moreover, the thickness of the filling colloid 51 is the same as the thickness of the sealing frame 3, thereby ensuring the overall flatness of the first base film 1 and the second base film 2.

[0037] Example 2

[0038] Unlike Example 1, as Figures 3-4 The heating film shown has high elasticity. The protective component 5 includes a first adhesive strip 52 and a second adhesive strip 53. The first adhesive strip 52 is connected between the first base film 1 and the second base film 2. The first adhesive strip 52 can ensure the stability of the protective sleeve 41 when bent and placed. The first adhesive strip 52 is set at the bending gap of the protective sleeve 41. The second adhesive strip 53 is connected between the first base film 1 and the second base film 2. The side of the second adhesive strip 53 is connected to the sealing strip frame 3. The thickness of the first adhesive strip 52 and the second adhesive strip 53 is the same as the thickness of the sealing strip frame 3, which can reduce the compressive force on the resistance wire 42.

[0039] Furthermore, the protective component 5 also includes a mounting groove 54, a connecting block 56, and a protective pull wire 55. The mounting groove 54 is opened at the top of the second adhesive strip 53, the connecting block 56 is connected to the end of the inner cavity of the mounting groove 54, and the protective pull wire 55 is disposed inside the mounting groove 54. The end of the protective pull wire 55 is fixedly connected to the connecting block 56. When the first base film 1 and the second base film 2 are in their initial shape, the protective pull wire 55 is in a relaxed state. When the first base film 1 and the second base film 2 are stretched by tension, the protective pull wire 55 can limit the length of its extension, thereby reducing the damage caused by excessive stretching of the first base film 1 and the second base film 2.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heating film with high extensibility, characterized in that, include: A first base film (1) and a second base film (2), wherein the second base film (2) is disposed on top of the first base film (1); A heating unit (4) is disposed between a first base film (1) and a second base film (2). The first base film (1) and the second base film (2) are used to insulate and protect the heating unit (4). The heating unit (4) includes: A protective sleeve (41) is connected between the first base film (1) and the second base film (2) in an S-bend. A resistance wire (42) is arranged in an S-shape inside the protective sleeve (41); A connecting wire (43) is provided, one end of which is connected to a resistance wire (42). The connecting wire (43) is connected to an external power source to supply power to the resistance wire (42).

2. The heating film with high extensibility according to claim 1, characterized in that, The heating unit (4) also includes: The first release part (44) is formed by the bend of the protective sleeve (41) and is used to release the longitudinal prestress of the heating film. The second release part (45) is formed by the bend of the resistance wire (42) and is used to release the lateral prestress of the heating film.

3. The heating film with high extensibility according to claim 2, characterized in that, Also includes: The edge sealing frame (3) is connected between the first base film (1) and the second base film (2), and the protective sleeve (41) is located inside the edge sealing frame (3); The protective component (5) is disposed inside the sealing strip frame (3) and is used to protect the heating unit (4).

4. The heating film with high extensibility according to claim 3, characterized in that, The protective component (5) includes a filler colloid (51) which fills the gap between the sealing strip frame (3) and the protective sleeve (41) and is connected between the first base film (1) and the second base film (2).

5. The heating film with high extensibility according to claim 3, characterized in that, The protective component (5) includes: The first adhesive strip (52) is connected between the first base film (1) and the second base film (2), and the first adhesive strip (52) is disposed at the bending gap of the protective sleeve (41); The second adhesive strip (53) is connected between the first base film (1) and the second base film (2), and the side of the second adhesive strip (53) is connected to the sealing strip frame (3).

6. The heating film with high extensibility according to claim 5, characterized in that, The protective component (5) also includes: Mounting groove (54) is provided on the top of the second adhesive strip (53); A connecting block (56) is connected to the end of the cavity of the mounting groove (54); A protective pull wire (55) is provided inside the mounting groove (54), and the end of the protective pull wire (55) is fixedly connected to the connecting block (56).

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