Heating device and foot warmer

Abstract

The utility model relates to the field of heating devices, and discloses a heating device and a foot warmer, the heating device comprises a flexible heating film, a first connecting cloth and a second connecting cloth, the second connecting cloth is fixed on the top surface of the first connecting cloth; the second connecting cloth is arranged to be in a closed loop shape, so that a channel is formed in the inner wall of the second connecting cloth; or the second connecting cloth is arranged to be in an inverted U shape, and the two ends of the U-shaped second connecting cloth are fixed to the first connecting cloth respectively, so that a channel is formed between the second connecting cloth and the first connecting cloth; the channel is used for being arranged on the sole in a sleeving mode, the flexible heating film is fixed to the first connecting cloth, and the second connecting cloth is made of elastic cloth. In addition, the foot warmer comprises the heating device. The heating device is very flexible to use, can be conveniently worn on the sole of the foot by a user, and can be matched with different shoes.

Description

Technical Field

[0001] The utility model relates to the field of heating devices, in particular to a heating device and a foot warmer. Background Art

[0002] In today's market, there are some foot warming devices in the shape of shoes, and their heating films are arranged at the insoles or soles of the shoes. However, this kind of design sacrifices the user's freedom to choose a variety of shoe styles, which may affect the user's adaptability in different social occasions. In addition, since the shoe sizes are fixed, people with different foot sizes cannot use them. For example, a foot warming shoe disclosed in Chinese Patent Publication No. CN213849010U is a typical representative of this kind of design. This product integrates the warming function into the shoes, thus restricting the user's flexibility to choose different shoe styles according to different occasions. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to solve at least one of the above-mentioned technical problems.

[0004] The solution of the utility model to solve its technical problem is:

[0005] A heating device, which includes a flexible heating film, as well as a first connecting cloth and a second connecting cloth, and the second connecting cloth is fixed on the top surface of the first connecting cloth;

[0006] The second connecting cloth is arranged in a closed-loop shape, so that the inner wall of the second connecting cloth forms a channel; or the second connecting cloth is arranged in an inverted U shape, and both ends of the U-shaped second connecting cloth are respectively fixed on the first connecting cloth, so that a channel is formed between the second connecting cloth and the first connecting cloth;

[0007] The channel is used to be sleeved on the instep, the flexible heating film is fixed on the first connecting cloth, and the second connecting cloth is made of elastic fabric.

[0008] As a further improvement of the above technical solution, the channel extends in the front-back direction, and the left and right sides of the first connecting cloth respectively extend out extension parts in the left-right direction.

[0009] As a further improvement of the above technical solution, the upper cloth layer is fixedly connected to the second connecting cloth.

[0010] As a further improvement of the above technical solution, the second connecting cloth is arranged in a closed-loop shape, the first connecting cloth further includes a connecting layer fixed on the upper cloth layer, the connecting layer encloses a ring shape, and the closed-loop second connecting cloth and the ring-shaped connecting layer are mutually penetrated and connected together.

[0011] As a further improvement of the above technical solution, a wire passing hole is provided between the upper cloth layer and the lower cloth layer, and the wire passing hole is used for passing a wire electrically connected to the flexible heating film.

[0012] As a further improvement of the above technical solution, the channel extends in the front-rear direction, and the cross-sectional area of the channel gradually increases from front to back.

[0013] As a further improvement of the above technical solution, the flexible heating film is a graphene flexible electrothermal film.

[0014] The present utility model also provides a foot warmer, which includes the heating device in any of the above technical solutions.

[0015] As a further improvement of the above technical solution, the foot warmer further includes a controller, and the controller is electrically connected to the flexible invention film through a wire.

[0016] The beneficial effects of the present utility model are as follows: The flexible heating film is a heat generating element that can be bent. When electrified, an electric current passes through the conductive material to generate Joule heat, thereby generating heat. The first connecting cloth serves as the base layer, and the flexible heating film is fixed thereon. Due to the flexibility of the flexible heating film, it can conform to an irregular surface to provide uniform heating. The second connecting cloth can form a closed-loop shape or an inverted U-shaped structure according to different designs. This design allows the second connecting cloth to form a channel that can be sleeved on the sole of the foot. The closed-loop structure provides a continuous annular channel, while the inverted U-shaped structure provides an open channel. Both can adapt to the shape of the sole of the foot, ensuring that the heating device closely adheres to the sole of the foot and improving the thermal efficiency. The second connecting cloth is made of elastic fabric, which enables the heating device to adapt to soles of different sizes and shapes, providing good fit and comfort. The present utility model utilizes the flexible heating film to generate heat, fixes the heating film through the first connecting cloth, and at the same time provides a channel to adapt to the shapes of different human soles. Before putting on shoes, the user can put the foot through the channel to sleeve on the sole of the foot, thereby providing the function of heating and keeping warm for the sole of the foot. Description of the Drawings

[0017] Figure 1 is the front view of the foot warmer according to an embodiment of the present utility model;

[0018] Figure 2 is the axonometric Figure 1 ;

[0019] Figure 3 is the axonometric of the foot warmer according to an embodiment of the present utility model Figure 2 ;

[0020] Figure 4 is the axonometric of the foot warmer according to an embodiment of the present utility modelFigure 3 ;

[0021] Figure 5 is a cross-sectional view of a heating device according to an embodiment of the present utility model.

[0022] In the drawings: 1 - flexible heating film, 2 - first connecting cloth, 21 - upper cloth layer, 22 - lower cloth layer, 23 - extending portion, 24 - wire passing hole, 25 - connecting layer, 3 - second connecting cloth, 31 - channel, 4 - controller, 5 - wire. Specific Embodiment

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the above description of the embodiments are briefly described. Obviously, the described drawings are only a part of the embodiments of the present utility model, rather than all embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.

[0024] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts all fall within the scope of protection of the present utility model. In addition, all the connection / connection relationships mentioned in the text do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present utility model can be interactively combined without conflicting with each other.

[0025] In today's market, there have emerged some foot-warming devices in the shape of shoes, and their heating films are arranged at the insoles or soles of the shoes. However, such designs sacrifice the user's freedom to choose a variety of shoe styles, which may affect the user's adaptability in different social situations. In addition, since the shoe sizes are fixed, people with different foot sizes cannot use them.

[0026] For this reason, please refer to Figures 1 to 5 , a heating device, which includes a flexible heating film 1, and a first connecting cloth 2 and a second connecting cloth 3, and the second connecting cloth 3 is fixed on the top surface of the first connecting cloth 2;

[0027] The second connecting cloth 3 is arranged in a closed-loop shape, so that a channel 31 is formed on the inner wall of the second connecting cloth 3; or the second connecting cloth 3 is arranged in an inverted U shape, and both ends of the U-shaped second connecting cloth 3 are respectively fixed on the first connecting cloth 2, so that a channel 31 is formed between the second connecting cloth 3 and the first connecting cloth 2;

[0028] The channel 31 is used to be sleeved on the instep, the flexible heating film 1 is fixed on the first connecting cloth 2, and the second connecting cloth 3 is made of elastic fabric.

[0029] As can be seen from the above, the utility model uses the flexible heating film 1 to generate heat, fixes the heating film through the first connecting cloth 2, and at the same time provides a channel 31 to adapt to the shape of the human instep, so as to provide the function of heating and keeping warm for the instep. The flexible heating film 1 is a bendable heating element. When electrified, an electric current passes through the conductive material to generate Joule heat, thereby generating heat. The first connecting cloth 2 serves as the base layer, and the flexible heating film 1 is fixed thereon. Due to the flexibility of the flexible heating film 1, it can be attached to an irregular surface to provide uniform heating. The second connecting cloth 3 can form a closed-loop shape or an inverted U-shaped structure according to different designs. This design allows the second connecting cloth 3 to form a channel 31, and this channel 31 can be sleeved on the instep. The closed-loop structure provides a continuous annular channel 31, while the inverted U-shaped structure provides an open channel 31. Both can adapt to the shape of the instep, ensure that the heating device is closely attached to the instep, and improve the thermal efficiency. The second connecting cloth 3 is made of elastic fabric, which enables the heating device to adapt to insteps of different sizes and shapes, providing good fit and comfort.

[0030] After the channel 31 is sleeved on the instep, in an embodiment, the channel 31 extends in the front-back direction, and the left and right side edges of the first connecting cloth 2 respectively extend out extension parts 23 in the left-right direction. Through the arrangement of the extension parts 23, it is convenient for the user to adjust the position of the flexible heating film 1 by pulling the extension parts 23.

[0031] In an embodiment, the upper cloth layer 21 and the second connecting cloth 3 are fixedly connected. This structure is simple and convenient to set. Optionally, the upper cloth layer 21 and the second connecting cloth 3 are sewn together with yarn. Of course, other connection methods can also be adopted between the upper cloth layer 21 and the second connecting cloth 3, such as ultrasonic welding or hot pressing fixation between the second connecting cloth 3 and the upper cloth layer 21, etc.

[0032] When the channel 31 is sleeved on the sole of the foot, if the second connecting cloth 3 is directly fixed to the first connecting cloth 2, and at this time if it is necessary to adjust the relative angle between the flexible heating film 1 and the sole of the foot, then the flexible heating film 1 and the sole of the foot must rotate relative to each other. In this way, the channel 31 and the sole of the foot will inevitably rotate relative to each other. The sliding friction force between the inner wall of the channel 31 and the sole of the foot may cause discomfort to the user. For this reason, in one embodiment, the second connecting cloth 3 is arranged in a closed loop shape, and the first connecting cloth 2 further includes a connecting layer 25 fixed on the upper cloth layer 21. The connecting layer 25 encloses a ring shape, and the closed-loop second connecting cloth 3 and the ring-shaped connecting layer 25 are mutually threaded together. Through the arrangement of the connecting layer 25, the connecting layer 25 and the second connecting cloth 3 can slide relative to each other, so that when adjusting the relative angle between the flexible heating film 1 and the sole of the foot, the relative rotation between the second connecting cloth 3 and the sole of the foot can be effectively reduced.

[0033] In order to facilitate the access of electric energy to the flexible heating film 1, in one embodiment, a wire passing hole 24 is left between the upper cloth layer 21 and the lower cloth layer 22. The wire passing hole 24 is used for passing a wire 5 electrically connected to the flexible heating film 1. This structure is simple and convenient to set. In actual use, the wire passing hole 24 is arranged at the extension part 23 on the left or right side of the first cloth. In this way, it is convenient for the wire 5 to be accessed.

[0034] In order to facilitate the user to insert the sole of the foot into the channel 31, in one embodiment, the channel 31 extends in the front-rear direction, and the cross-sectional area of the channel 31 gradually increases from front to back. This design enables the user to easily extend the sole of the foot forward from the rear end of the channel 31, greatly improving the convenience of use.

[0035] The flexible heating film 1 is a heating material in the prior art. It has good flexibility and bendability and can be attached to the surfaces of various shaped objects as needed. This kind of heating film is usually made of conductive materials such as conductive polymers or metal films, and generates heat through the passage of current. It is widely used in fields such as heating pads, warm clothing, car defrosting, and medical and health care equipment. The advantages of the flexible heating film 1 include energy saving and high efficiency, safety and reliability, easy installation and maintenance, and can be customized in shape and size according to needs. In one embodiment, the flexible heating film 1 is a graphene flexible electrothermal film. The surface of the graphene flexible electrothermal film uses a polymer resin and has the advantages of soft texture, safe and practical, foldable, non-toxic and harmless material, and green environmental protection.

[0036] The present utility model also provides a foot warmer, which includes the heating device in any of the above embodiments. Since the above content has described the heating device in detail, those skilled in the art should be able to understand it in combination with the accompanying drawings of the specification, so the heating device will not be elaborated here.

[0037] For convenience, in one embodiment, the foot warmer further includes a controller 4, and the controller 4 is electrically connected to the flexible invention film through a wire 5.

[0038] The preferred embodiments of the present utility model have been specifically described above, but the present utility model is not limited to the above embodiments. Those skilled in the art can also make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A heating device, comprising a flexible heating film (1), characterized in that: The heating device further comprises a first connecting cloth (2) and a second connecting cloth (3), wherein the second connecting cloth (3) is fixed on the top surface of the first connecting cloth (2); The second connecting fabric (3) is arranged in a closed loop shape, so that the inner wall of the second connecting fabric (3) forms a channel (31); or the second connecting fabric (3) is arranged in an inverted U-shape, and the two ends of the U-shaped second connecting fabric (3) are respectively fixed to the first connecting fabric (2), so that a channel (31) is formed between the second connecting fabric (3) and the first connecting fabric (2); The channel (31) is used to be put on the sole of the foot, the flexible heating film (1) is fixed on the first connecting cloth (2), and the second connecting cloth (3) is made of elastic cloth.

2. The heating device according to claim 1, characterized in that The channel (31) extends in the front-to-back direction, and the left and right side edges of the first connecting cloth (2) respectively extend extension portions (23) in the left and right directions.

3. According to the heating device according to claim 1 or 2, the first connecting cloth (2) comprises an upper cloth layer (21) and a lower cloth layer (22), and the edges of the upper cloth layer (21) and the lower cloth layer (22) are fixedly connected, so that a cavity is enclosed between the upper cloth layer (21) and the lower cloth layer (22), the flexible heating film (1) is fixed in the cavity, and the upper cloth layer (21) and / or the lower cloth layer (22) are fixedly connected to the second connecting cloth (3).

4. The heating device according to claim 3, characterized in that: The upper fabric layer (21) and the second connecting fabric (3) are fixedly connected.

5. The heating device according to claim 3, characterized in that: The second connecting fabric (3) is arranged in a closed loop, and the first connecting fabric (2) further comprises a connecting layer (25) fixed on the upper fabric layer (21), the connecting layer (25) being arranged in a ring shape, and the closed loop-shaped second connecting fabric (3) and the ring-shaped connecting layer (25) are interlaced with each other.

6. The heating device according to claim 3, characterized in that: A wire hole (24) is left between the upper fabric layer (21) and the lower fabric layer (22), and the wire hole (24) is used to pass a wire (5) electrically connected to the flexible heating film (1).

7. The heating device according to claim 1, characterized in that: The channel (31) extends in the front-to-back direction, and the cross-sectional area of ​​the channel (31) gradually increases from the front to the back.

8. The heating device according to claim 1, characterized in that The flexible heating film (1) is a graphene flexible electric heating film.

9. A foot warmer, characterized in that: Comprising a heating device as described in any one of claims 1-8.

10. The foot warmer according to claim 8, characterized in that: The foot warmer also includes a controller (4), and the controller (4) is electrically connected to the flexible invention film through a wire (5).

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