Heating film with temperature resistance

Abstract

The utility model provides a heating film with temperature resistance, and belongs to the technical field of heating films. Comprising an upper film, a lower film and a heating wire adhered between the upper film and the lower film, both the upper film and the lower film are high-temperature glass fiber adhesive tapes, a wire is arranged at a wiring end of the heating wire, and a glass fiber sleeve is sleeved on the wire. Through the arrangement of the upper film and the lower film, the upper film and the lower film are both high-temperature glass fiber adhesive tapes, the highest temperature of the heating film formed by matching the high-temperature glass fiber adhesive tapes with the heating wires can be safely and effectively operated is 260 DEG C, the temperature resistance of the heating film is improved, and the heating film is suitable for the use requirements of electronic cigarettes or fryers; through the arrangement of the connecting cover, the V-shaped part and the bent part of the connecting cover are fully filled in a spot welding manner, so that the contact area between the wiring end of the wire and the connecting cover is increased, the connection between the wire and the connecting cover is firm and reliable, and the conductivity among the wire, the connecting cover and the heating wire is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating films, in particular to a heating film with temperature resistance. Background Art

[0002] PI heating film is a heating element made of polyimide material. PI is the abbreviation of Polyimide in English. PI heating sheets are usually used in electronic equipment, medical equipment, aerospace, automobiles and other fields. They generate heat through the conduction of electric current to achieve the purpose of heating. PI heating sheets are mainly composed of two layers of polyimide film and a heating wire located between the two layers of polyimide film. After the heating wire is connected to the wire by soldering, the wire is connected to the power supply to generate heat through the heating wire.

[0003] When common PI heating films are used, the maximum temperature at which the PI heating films can work safely and effectively is usually 180 degrees. However, the heating films in electronic cigarettes or deep fryers usually require higher temperatures, and the heating films are usually difficult to meet the usage requirements of the above-mentioned equipment. Therefore, the present application provides a heating film with temperature resistance to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a heating film with temperature resistance to solve the technical problem that the maximum temperature at which common PI heating films can work safely and effectively is usually 180 degrees, but the heating films in electronic cigarettes or deep fryers usually require higher temperatures, and the heating films usually cannot meet the use requirements of the above-mentioned equipment.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A heating film with temperature resistance comprises an upper film, a lower film and a heating wire pasted between the upper and lower films. Both the upper and lower films are made of high-temperature fiberglass tape. The connection ends of the heating wire are provided with wires which are sleeved with fiberglass sleeves.

[0007] Preferably, a connection cover is fixed on the connection end of the heating wire, and the connection end of the wire is welded and fixed in the connection cover.

[0008] Preferably, the connection cover includes a plurality of vertical portions and a plurality of V-shaped portions, wherein the V-shaped portions are connected between two adjacent vertical portions, and the side surfaces of the vertical portions are in contact with the side surfaces of the connection terminals of the wires.

[0009] Preferably, a curved portion is connected between the two vertical portions at the bottom, a ball pin is fixed to the end of the wire terminal, the end of the ball pin is in contact with the inner wall of the curved portion, two main spring sheets are fixed to the inner wall of the curved portion, the main spring sheets are used for clamping the ball pin, and notches are provided at the opposite ends of the two main spring sheets, the inner walls of the notches are in contact with the surface of the ball pin.

[0010] Preferably, the inner wall of the notch is arc-shaped, and the shape of the inner wall of the notch is adapted to the shape of the ball stud.

[0011] Preferably, an auxiliary elastic sheet is fixed to the bottom of the main elastic sheet, and a side of the auxiliary elastic sheet away from the main elastic sheet is fixedly connected to the inner wall of the curved portion.

[0012] Preferably, the auxiliary elastic piece is arc-shaped.

[0013] Preferably, the side corners of the connection terminals of the wires are rounded.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] In the above scheme, through the setting of the upper membrane and the lower membrane, both the upper membrane and the lower membrane are high-temperature glass fiber tape. The heating membrane formed by the high-temperature glass fiber tape and the heating wire can work safely and effectively at a maximum temperature of 260 degrees, thereby improving the temperature resistance of the heating membrane and adapting to the use requirements of electronic cigarettes or deep fryers.

[0016] By setting the connection cover, the terminal of the wire is placed in the connection cover and clamped by the main spring to realize the positioning of the wire, which is convenient for the subsequent connection of the connection cover and the wire. Then, the terminal of the wire and the connection cover are connected by spot welding of conductors such as nickel wire and nickel strip. The V-shaped part and the curved part of the connection cover are filled by spot welding to increase the contact area between the terminal of the wire and the connection cover, so that the connection between the wire and the connection cover is firm and reliable, and the conductivity between the wire, the connection cover and the heating wire is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is an enlarged view of the vertical portion structure of the present utility model;

[0020] Figure 3 It is a front view of the utility model;

[0021] Figure 4 This is an enlarged view of the V-shaped structure of the present invention;

[0022] Figure 5 This is a front view of the heating wire of the present invention;

[0023] Figure 6This is a bottom cross-sectional view of the main shrapnel of the present invention.

[0024] [Reference Signs]

[0025] 1. Upper membrane; 2. Lower membrane; 3. Heating wire; 4. Wire; 5. Connecting cover; 51. Vertical portion; 52. Bend portion; 53. V-shaped portion; 6. Ball stud; 7. Main shrapnel; 8. Auxiliary shrapnel; 9. Notch; 10. Fiberglass sleeve.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0027] The following describes in detail a heat-resistant heating film provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0028] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0029] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0030] like Figures 1-6As shown, an embodiment of the present invention provides a heating film with temperature resistance, including an upper film 1 and a lower film 2 and a heating wire 3 pasted between the upper film 1 and the lower film 2. The upper film 1 and the lower film 2 are both high-temperature glass fiber tapes. The connection end of the heating wire 3 is provided with a wire 4, and a glass fiber sleeve 10 is sleeved on the wire 4. The glass fiber sleeve 10 is used to protect the wire 4 and reduce the impact of heat on the wire 4 during the use of the heating film. The heating film formed by the high-temperature glass fiber tape and the heating wire 3 can work safely and effectively at a maximum temperature of 260 degrees, which improves the temperature resistance of the heating film, thereby meeting the use requirements of electronic cigarettes or deep fryers.

[0031] like Figure 2 and Figure 4 As shown, in this embodiment, a connecting cover 5 is fixed on the terminal of the heating wire 3, and the terminal of the wire 4 is welded and fixed in the connecting cover 5. When wiring, the terminal of the wire 4 is inserted into the connecting cover 5 and the terminal of the wire 4 is fixed in the connecting cover 5 by spot welding, so that the electrical connection between the wire 4 and the heating wire 3 can be achieved.

[0032] like Figure 4 As shown, in this embodiment, the connection cover 5 includes a plurality of vertical portions 51 and a plurality of V-shaped portions 53. The V-shaped portion 53 is connected between two adjacent vertical portions 51. The side surfaces of the vertical portions 51 are in contact with the side surfaces of the terminal of the wire 4. The V-shaped portion 53 is filled with welding material by spot welding. The contact area between the terminal of the wire 4 and the connection cover 5 is increased by the V-shaped portion 53, thereby making the connection between the terminal of the wire 4 and the connection cover 5 more stable and reliable.

[0033] like Figure 4 As shown, in this embodiment, a curved portion 52 is connected between the two vertical portions 51 at the bottom, a ball pin 6 is fixed to the end of the terminal of the wire 4, the end of the ball pin 6 is fitted with the inner wall of the curved portion 52, and two main springs 7 are fixed to the inner wall of the curved portion 52. The main springs 7 are used for the clamping of the ball pin 6. The opposite ends of the two main springs 7 are provided with notches 9. The inner wall of the notch 9 is fitted with the surface of the ball pin 6. The terminal of the wire 4 is inserted into the connecting cover 5, and the wire 4 drives the ball pin 6. The ball head squeezes the main spring piece 7, causing the main spring piece 7 to deform. When the ball pin 6 fits into the inner wall of the curved portion 52 on the connecting cover 5, the ball head on the ball pin 6 separates from the main spring piece 7. After separation, the main spring piece 7 returns to its original state under the action of its own elastic force and clamps the ball pin 6 through the notch 9, thereby realizing the positioning between the connecting cover 5 and the terminal of the wire 4. During the subsequent spot welding, there is no need to hold the wire 4 by hand to ensure the alignment between the terminal of the wire 4 and the terminal of the heating wire 3, thereby facilitating the subsequent spot welding operation.

[0034] like Figure 6As shown, in this embodiment, the inner wall of the notch 9 is arc-shaped, and the shape of the inner wall of the notch 9 is adapted to the shape of the ball stud 6. The arc-shaped notch 9 ensures a stable fit between the notch 9 and the ball stud 6, thereby improving the stability and reliability of the clamping of the ball stud 6.

[0035] like Figure 4 As shown, in this embodiment, an auxiliary elastic piece 8 is fixed to the bottom of the main elastic piece 7, and the side of the auxiliary elastic piece 8 away from the main elastic piece 7 is fixedly connected to the inner wall of the curved portion 52. Through the cooperation between the auxiliary elastic piece 8 and the main elastic piece 7, the elasticity of the main elastic piece 7 and the rebound ability of the main elastic piece 7 to return to the initial undeformed state are improved, thereby making the ball head pin 6 more stable and reliable.

[0036] like Figure 4 As shown, in this embodiment, the auxiliary elastic piece 8 is arc-shaped, and the arc-shaped shape can increase the elastic force of the auxiliary elastic piece 8 itself, and further improve the resilience of the main elastic piece 7 to return to the initial undeformed state.

[0037] like Figure 4 As shown, in this embodiment, the side corners of the terminal of the wire 4 are rounded, and the rounded corner design facilitates the insertion of the terminal of the wire 4 into the connection cover 5, thereby facilitating the connection and positioning of the terminal of the wire 4 and the connection cover 5.

[0038] Working principle: The upper film 1 and the lower film 2 are both made of high-temperature fiberglass tape. The upper film 1 and the lower film 2 are pasted together with the heating wire 3 in between to form a heating film. The heating film formed by the high-temperature fiberglass tape and the heating wire 3 can work safely and effectively at a maximum temperature of 260 degrees, which improves the temperature resistance of the heating film and meets the needs of use in electronic cigarettes or deep fryers.

[0039] When wiring, the terminal of the wire 4 is inserted into the connecting cover 5, and the wire 4 drives the ball head of the ball pin 6 to squeeze the main spring piece 7, causing the main spring piece 7 to deform. When the ball pin 6 fits with the inner wall of the curved portion 52 on the connecting cover 5, the ball head on the ball pin 6 is separated from the main spring piece 7. After separation, the main spring piece 7 returns to its initial state under the action of its own elastic force and clamps the ball pin 6. After clamping, the terminal of the wire 4 and the connecting cover 5 can be connected by spot welding with a conductor such as nickel wire or nickel strip. The V-shaped portion 53 and the curved portion 52 of the connecting cover 5 are filled by spot welding to increase the contact area between the terminal of the wire 4 and the connecting cover 5, thereby improving the connection firmness of the wire 4 and the connecting cover 5, and also improving the conductivity between the wire 4 and the connecting cover 5 and the heating wire 3, thereby ensuring the stable use of the heating film.

[0040] The present invention encompasses any substitutions, modifications, equivalent methods, and solutions that are not within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments of the present invention above, but those skilled in the art can fully understand the present invention without these detailed descriptions.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A heating film with temperature resistance, characterized in that: The invention comprises an upper film (1), a lower film (2) and a heating wire (3) adhered between the upper film (1) and the lower film (2). The upper film (1) and the lower film (2) are both made of high-temperature glass fiber adhesive tape. The connection end of the heating wire (3) is provided with a wire (4), and a glass fiber sleeve (10) is sleeved on the wire (4).

2. The heating film with temperature resistance according to claim 1, characterized in that: A connection cover (5) is fixed on the connection end of the heating wire (3), and the connection end of the wire (4) is welded and fixed in the connection cover (5).

3. The heating film with temperature resistance according to claim 2, characterized in that: The connection cover (5) comprises a plurality of vertical portions (51) and a plurality of V-shaped portions (53), wherein the V-shaped portion (53) is connected between two adjacent vertical portions (51), and the side surfaces of the vertical portions (51) are in contact with the side surfaces of the connection terminals of the wires (4).

4. The heating film with temperature resistance according to claim 2, characterized in that: A curved portion (52) is connected between the two vertical portions (51) at the bottom. A ball pin (6) is fixed to the end of the terminal of the wire (4). The end of the ball pin (6) is in contact with the inner wall of the curved portion (52). Two main springs (7) are fixed to the inner wall of the curved portion (52). The main springs (7) are used for clamping the ball pin (6). Notches (9) are provided at opposite ends of the two main springs (7). The inner walls of the notches (9) are in contact with the surface of the ball pin (6).

5. The heating film with temperature resistance according to claim 4, characterized in that: The inner wall of the notch (9) is arc-shaped, and the shape of the inner wall of the notch (9) is compatible with the shape of the ball pin (6).

6. The heating film with temperature resistance according to claim 4, characterized in that: An auxiliary elastic piece (8) is fixed to the bottom of the main elastic piece (7), and a side of the auxiliary elastic piece (8) away from the main elastic piece (7) is fixedly connected to the inner wall of the curved portion (52).

7. The heating film with temperature resistance according to claim 6, characterized in that: The auxiliary elastic piece (8) is arc-shaped.

8. The heating film with temperature resistance according to claim 1, characterized in that: The side corners of the connection terminals of the wires (4) are rounded.

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