Circuit connection structure of the heating carrier

Abstract

This utility model relates to a circuit connection structure for a heating carrier. At least one flexible circuit board is provided in the interlayer space formed by two main shielding members, and conductive adhesive is applied to the conductor of the flexible circuit board to bond it to a heating film. A protective film is provided between the heating film and one edge of the flexible circuit board to separate the heating film from the edge of the flexible circuit board. Accordingly, by setting the protective film, the heating film can be prevented from being cut or damaged by the edge of the flexible circuit board, thereby effectively improving the durability of the heating carrier.

Description

Technical Field

[0001] This utility model relates to the technical field of an electric heating device, and more particularly to a circuit connection structure for a heating carrier. Background Technology

[0002] In cold environments, people need to wear warm clothing to prevent hypothermia. Therefore, people wear heavy clothes to keep warm. However, heavy clothing is not only uncomfortable to wear but also restricts movement. Therefore, some companies have developed electrically heated clothing. Current electrically heated clothing mainly uses a heating element sewn inside the garment. When the heating element conducts electricity, the high impedance of the heating wire inside generates heat when current passes through, thus warming the user's body. However, this linear heating wire has drawbacks such as slow heating speed and low heating efficiency.

[0003] Therefore, some companies have developed a method to replace the heating wire with a printed heating film. Please refer to [link / reference]. Figure 12 As shown, after the existing printed heating film 91 is connected to the silver paste conductive film or copper foil 92, it is then soldered to the positive and negative terminals of the copper foil 92 to which the heating film 91 is connected by two copper sheets 94 pre-connected with conductive lines 93. Please also refer to [link to relevant documentation]. Figure 13 As shown, after the existing heating film 91 is connected to the copper foil 92, a male buckle 95 is provided on each of the positive and negative terminals of the copper foil 92, and two female buckles 96 are respectively connected to two conductive wires 93. Then, the copper foil 92 with the heating film 91 connected to it is combined with the conductive wires 93 by the corresponding snapping method of the male buckles 95 and female buckles 96. See also Figure 14 As shown, after the existing heating film 91 is connected to the copper foil 92, a locking hole 921 is provided at the positive and negative poles of the copper foil 92. Two connecting boxes 97 are then connected to two conductive wires 93 respectively. The screws 971 on the two connecting boxes 97 are used to lock the copper foil 92 with the heating film 91 to the pre-set locking holes 921 at the positive and negative poles. The heating film 91 can then be pasted onto the fabric and wrapped inside the fabric along with the power cord 93 to form a heating carrier. When the user wears clothing with the heating carrier or washes and dries the clothing, the printed heating film 91 or silver paste conductive film is easily cut during washing due to its connection with the copper sheet 94, male / female buckles 95, 96, screws 971, or other fixing methods, resulting in rapid damage and loss of the printed heating film 91.

[0004] Therefore, in view of the aforementioned shortcomings in the use and implementation of existing heating film heating carriers, the applicant has developed this application based on its many years of manufacturing and design experience and knowledge in related fields and through various ingenious ideas. Utility Model Content

[0005] This utility model relates to a circuit connection structure for a heating carrier, the main purpose of which is to provide a circuit connection method that can effectively improve the durability of the heating carrier.

[0006] To achieve the aforementioned objectives, the applicant has devised a circuit connection structure for a heating carrier, comprising a first shielding member and a second shielding member, the first shielding member and the second shielding member being correspondingly combined to form a sandwich space between the first shielding member and the second shielding member. Within the sandwich space, at least one flexible circuit board, at least one protective film, at least one heating film, and at least one wire are disposed. At least one conductor is disposed on the at least one flexible circuit board, and a conductive adhesive is coated on the at least one conductor. At least one heating film is bonded to the conductive adhesive. At least one protective film covers one side edge of the at least one flexible circuit board, and the at least one heating film is separated from the side edge of the at least one flexible circuit board by the at least one protective film. One end of at least one wire is connected to the at least one flexible circuit board, and the other end of the at least one wire extends outward from the combined first shielding member and the second shielding member.

[0007] In the circuit connection structure of the heating carrier as described above, at least one flexible circuit board is arranged horizontally, at least one heating film and at least one protective film are arranged vertically, one end of the at least one protective film covers one side edge of the at least one flexible circuit board, and at least one heating film is disposed on the at least one protective film.

[0008] In the circuit connection structure of the heating carrier as described above, at least one flexible circuit board is arranged horizontally, at least one heating film is arranged vertically, and at least one protective film is arranged horizontally and is disposed along one side edge of at least one flexible circuit board to cover the one side edge of at least one flexible circuit board.

[0009] In the circuit connection structure of the heating carrier as described above, at least one of the protective films corresponds to the shape and size of the at least one heating film, one end of the at least one protective film covers one side edge of the at least one flexible circuit board, and the at least one heating film is correspondingly disposed on the at least one protective film.

[0010] In the circuit connection structure of the heating carrier as described above, the first shielding member and the second shielding member are respectively provided with a first adhesive layer and a second adhesive layer on one side of the interlayer space, and the first shielding member and the second shielding member are bonded and fixed by the first adhesive layer and the second adhesive layer.

[0011] In the circuit connection structure of the heating carrier as described above, at least one conductive film is provided in the interlayer space formed between the first shielding member and the second shielding member, and at least one conductive film is connected to at least two heating films, and at least two heating films are connected in series or in parallel through at least one conductive film.

[0012] Therefore, the circuit connection structure of the heating carrier of this utility model is printed with a heating film of uniform thickness, and then the heating film is attached to the cover material by heat transfer. In addition, a protective film is set to prevent the heating film from being cut or damaged by the edge of the flexible circuit board. In this way, the heating carrier can effectively improve the stability of heating temperature and power and its durability. Attached Figure Description

[0013] Figure 1 The flowchart shown is of this utility model; Figure 2 The diagram shown illustrates the printing implementation of this utility model. Figure 3 The diagram shown illustrates the implementation state of the heat transfer process of this utility model. Figure 4 The diagram shown is a circuit connection implementation state diagram of this utility model; Figure 5 The diagram shown is a schematic diagram of the molding heating carrier of this utility model (I). Figure 6 The figure shown is a schematic diagram (II) of the molding heating carrier of this utility model. Figure 7 The image shown is a front view of the heating carrier of this utility model; Figure 8 The figure shown is a cross-sectional view of the heating carrier of this utility model; Figure 9 The image shown is a front view of another embodiment of the heating carrier of this utility model; Figure 10 The figure shown is an exploded perspective view of the heating carrier according to another embodiment of this utility model; Figure 11 The image shown is a front view of another embodiment of the heating carrier of this utility model; Figure 12 The diagram shown is an assembly state diagram of one of its existing embodiments; Figure 13 The diagram shown is an assembly state diagram of two existing embodiments; Figure 14 The diagram shows the assembly state of the three existing embodiments.

[0014] Explanation of symbols in the attached drawings: 1: Substrate; 2: Heating film; 3: First covering element; 4: Second covering element; 5: Flexible circuit board; 51: Conductor; 52: Conductive adhesive; 6: Wire; 7: Protective film; 8: Heating carrier; 81: Conductive film; 91: Heating film; 92: Copper foil; 921: Keyhole; 93: Conductive wire; 94: Copper sheet; 95: Male buckle; 96: Female buckle; 97: Connector box; 971: Screw. Detailed Implementation

[0015] To more fully and clearly disclose the technical means and effects of this utility model, a detailed description is provided below, along with the disclosed drawings and drawing numbers: First, please refer to Figure 1 The diagram shows the circuit connection structure of the heating carrier of this utility model, and its manufacturing steps include: A. Printing: Please refer to the attached document as well. Figure 2 As shown, a low-resistivity carbon-based paste is printed onto a flat substrate 1 by screen printing to form at least one heating film 2 of uniform thickness on the substrate 1. The low-resistivity carbon-based paste contains carbon nanotubes, carbon black and adhesive. The carbon nanotubes, carbon black and adhesive are mixed together to form the low-resistivity carbon-based paste. The substrate 1 can be made of a high-strength and high-airtightness plate such as polyethylene terephthalate (PET). B. Heat transfer: Please refer to the following as well. Figure 3 As shown, a first covering member 3 is provided. The first covering member 3 is made of fabric and has a first side and a second side. A first adhesive layer is provided on the first side of the first covering member 3. The first adhesive layer is a thermoplastic polyurethane (TPU) film. At least one heating film 2 provided on the substrate 1 is correspondingly covered on the first side of the first covering member 3. Then, the at least one heating film 2 is transferred from the substrate 1 to the first side of the first covering member 3 by hot pressing, so that at least one heating film 2 is longitudinally arranged on the first side of the first covering member 3. C. Circuit Connection: Please refer to the following section as well. Figure 4As shown, a second covering 4 is provided, which is made of fabric and has a first side and a second side. A second adhesive layer is provided on the first side of the second covering 4. The second adhesive layer is a thermoplastic polyurethane film. At least one horizontally arranged flexible circuit board (FPC) 5 is fixed on the first side of the second covering 4. At least one end of a wire 6 is connected to the at least one flexible circuit board 5. The wire 6 includes positive and negative conductive wires. At least one conductor 51 is provided on the at least one flexible circuit board 5. The conductor 51 is a copper foil and is coated with conductive adhesive 52. At least one vertically arranged protective film 7 is bonded to the first side of the second covering 4. The protective film 7 is formed in a shape and size corresponding to the heating film 2. One end of the protective film 7 is pasted to the at least one flexible circuit board 5 to cover one edge of the at least one flexible circuit board 5. The protective film 7 is made of hot melt adhesive. D. Molded heating carrier: Please refer to the following as well. Figure 5 , Figure 6 As shown, the first surface of the first shielding member 3 with the heating film 2 is then attached to the first surface of the second shielding member 4 with the flexible circuit board 5 and the protective film 7, so that at least one heating film 2 vertically arranged on the first shielding member 3 is correspondingly disposed on at least one protective film 7 provided on the second shielding member 4, and the at least one heating film 2 is separated from one side edge of the flexible circuit board 5 by the at least one protective film 7, and then one end of the at least one heating film 2 is attached to at least one side edge of the flexible circuit board 5. The conductive adhesive 52 provided on the conductor 51 is bonded together. Then, the first adhesive layer and the first adhesive layer provided on the first shielding member 3 and the second shielding member 4 are heat-melted by hot pressing. The first shielding member 3 and the second shielding member 4 are bonded and fixed. The at least one heating film 2, at least one flexible circuit board 5, at least one protective film 7 and at least one wire 6 are covered inside to form a heating carrier 8. The other end of the at least one wire 6 extends out of the outside of the combined first shielding member 3 and second shielding member 4.

[0016] Therefore, please refer to the heating carrier 8 produced through the above steps. Figure 7 , Figure 8As shown, the device includes a first shielding member 3 and a second shielding member 4, with a sandwich space formed between the first shielding member 3 and the second shielding member 4. The first shielding member 3 and the second shielding member 4 each have a first adhesive layer on one side forming the sandwich space. Within the sandwich space, at least one longitudinally arranged heating film 2, at least one laterally arranged flexible circuit board 5, at least one longitudinally arranged protective film 7, and at least one conductive wire 6 are provided. At least one conductive element 51 is provided on the at least one flexible circuit board 5. Conductive adhesive 52 is applied to the conductor 51, and one end of the at least one heating film 2 is bonded to the conductive adhesive 52. At least one protective film 7 is disposed below the at least one heating film 2 and between the at least one heating film 2 and the flexible circuit board 5 to separate the at least one heating film 2 from one side edge of the flexible circuit board 5. One end of the wire 6 is connected to the at least one flexible circuit board 5, and the other end of the at least one wire 6 extends out of the outside of the bonded first shielding member 3 and second shielding member 4.

[0017] Therefore, when the heating carrier 8 of this invention is used, it is sewn onto clothing, gloves, hats, shoes, etc. The other end of the wire 6 extending from the outside of the first covering member 3 and the second covering member 4 of the heating carrier 8 is then connected to a battery. Power is supplied to the heating film 2 via the wire 6, causing the heating film 2 to conduct electricity and generate heat, which is then transferred to the user's body to achieve the effect of warming the user's body. It is also worth mentioning that, since this invention uses screen printing to form the heating film 2 and then uses heat transfer printing to flatly print the heating film 2 onto the first covering member 3, the uniformity of the resistance value of the heating film 2 can be ensured. Therefore, when the heating film 2 conducts electricity and generates heat, its uniform resistance characteristic can achieve effects such as improving the heating temperature and power stability.

[0018] When a user wears clothing with the heating carrier 8 of this invention sewn on it, or washes and dries the clothing, causing the heating film 2 inside the heating carrier 8 to be subjected to strong pulling, the carbon nanotubes in the low-resistivity carbon-based paste of this invention are firmly bonded to the carbon black and adhesive, thus preventing the carbon nanotubes inside the heating film 2 from separating due to thermal expansion and contraction. Furthermore, the protective film 7 between the heating film 2 and the flexible circuit board 5 prevents the edges of the heating film 2 and the flexible circuit board 5 from rubbing against each other and causing damage. In addition, the heating film 2 of this invention is bonded to the flexible circuit board 5 with conductive adhesive 52. Therefore, compared with the existing locking method such as screws, the damage caused by the pulling of the heating film 2 can be greatly reduced, thereby effectively improving the durability and other substantial benefits of the heating carrier 8 of this invention.

[0019] Please refer to the following as well. Figure 9As shown, in another embodiment of the present invention, at least one conductive film 81 can be provided between at least two heating films 2. The conductive film 81 is made of conductive paste such as silver paste. During the manufacturing process, at least two heating films 2 are first screen-printed onto a substrate 1, and then the conductive film 81 is screen-printed onto the substrate 1, connecting the at least one conductive film 81 to the at least two heating films 2. Then, the at least two heating films 2 and the at least one conductive film 81 are transferred from the substrate 1 to the first covering member 3 by thermal transfer. In this way, by using the conductive film 81, at least two heating films 2 can be connected in series or in parallel to further improve the heating speed and heating efficiency of the heating carrier 8.

[0020] The foregoing embodiments or drawings are not intended to limit the implementation of this utility model. The protective film 7 of this utility model may be arranged longitudinally with the heating film 2, except for... Figure 5 , Figure 6 [As shown], it can also be arranged horizontally in the same orientation as the flexible circuit board 5. Please refer to both. Figure 10 , Figure 11 As shown, at this time, the horizontally arranged protective film 7 is arranged along one side edge of the flexible circuit board 5 and completely covers one side edge of at least one flexible circuit board 5. Here, when one end of the vertically arranged heating film 2 is bonded to the conductive adhesive 52 provided on the conductor 51 of the flexible circuit board 5, it can also be separated from one side edge of the flexible circuit board 5 by the horizontally arranged protective film 7, so as to prevent the heating film 2 from being cut or damaged by the edge of the flexible circuit board 5. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

[0021] As can be seen from the above structure and implementation method, this utility model has the following advantages: 1. The circuit connection structure of the heating carrier of this utility model has controllable mesh size through screen printing, which facilitates the formation of a heating film with uniform thickness. Then, the heating film is flatly printed on the masking part by heat transfer. In this way, the uniformity of the resistance value of the heating film can be ensured, thereby effectively improving the heating temperature and power stability of the heating film.

[0022] 2. The circuit connection structure of the heating carrier of this utility model enables the carbon nanotubes in the low-resistivity carbon-based slurry used to make the heating film to be firmly bonded to carbon black and adhesive as one unit. Therefore, it avoids the separation of the carbon nanotubes in the heating film due to thermal expansion and contraction when the heating film is washed and dried, thereby improving the durability of the conductive film.

[0023] 3. The circuit connection structure of the heating carrier of this utility model has a protective film between the edge of the heating film and the edge of the flexible circuit board. Therefore, when the heating film is stretched and rubs against the edge of the flexible circuit board, the protective film can prevent the heating film from directly rubbing against the edge of the flexible circuit board and being cut or damaged.

[0024] 4. The circuit connection structure of the heating carrier of this utility model allows the heating film to be bonded and fixed to the flexible circuit board with conductive adhesive. Therefore, compared with the existing heating carriers where the heating film and flexible circuit board are locked together with screws or other means, the damage of the heating film when subjected to force and pulling can be greatly reduced.

[0025] 5. The circuit connection structure of the heating carrier of this utility model has at least one conductive film between at least two heating films, so that at least two heating films are connected in series or in parallel, thereby further improving the heating speed and heating efficiency of the heating carrier.

[0026] In conclusion, the embodiments of this utility model can indeed achieve the expected effects, and the specific structure disclosed therein has not only never been seen in similar products, but was also not disclosed before the application, and thus fully complies with the provisions and requirements of the Patent Law.

Claims

1. An electric circuit connection structure of a heat-generating carrier, characterized by comprising: The circuit connection structure includes a first shielding member and a second shielding member, which are correspondingly combined to form a sandwich space between the first shielding member and the second shielding member. Within the sandwich space, at least one flexible circuit board, at least one protective film, at least one heating film, and at least one wire are provided. At least one conductor is provided on the at least one flexible circuit board, and a conductive adhesive is coated on the at least one conductor. At least one heating film is bonded to the conductive adhesive. At least one protective film covers one side edge of the at least one flexible circuit board, and the at least one heating film is separated from the side edge of the at least one flexible circuit board by the at least one protective film. One end of the at least one wire is connected to the at least one flexible circuit board, and the other end of the at least one wire extends out of the combined first shielding member and the second shielding member.

2. The circuit connection structure of the heat-generating carrier according to claim 1, characterized by At least one flexible circuit board is arranged horizontally, at least one heating film and at least one protective film are arranged vertically, one end of the at least one protective film covers one side edge of the at least one flexible circuit board, and at least one heating film is disposed on the at least one protective film.

3. The circuit connection structure of the heat-generating carrier according to claim 1, characterized by At least one flexible circuit board is arranged horizontally, at least one heating film is arranged vertically, and at least one protective film is arranged horizontally and is disposed along one side edge of at least one flexible circuit board to cover the one side edge of at least one flexible circuit board.

4. The circuit connection structure of the heat-generating carrier according to claim 1, characterized by At least one of the protective films corresponds to the shape and size of the at least one heating film, one end of the at least one protective film covers one side edge of the at least one flexible circuit board, and the at least one heating film is correspondingly disposed on the at least one protective film.

5. The circuit connection structure of the heat-generating carrier according to claim 1, characterized by The first covering and the second covering have a first adhesive layer and a second adhesive layer respectively on one side of the interlayer space, and the first covering and the second covering are bonded and fixed by the first adhesive layer and the second adhesive layer.

6. The circuit connection structure of the heating carrier according to claim 1, characterized in that, At least one conductive film is provided in the interlayer space formed between the first shielding member and the second shielding member. The at least one conductive film is connected to at least two heating films, and the at least two heating films are connected in series or in parallel through the at least one conductive film.

Images