Spherical warming bag

Abstract

The utility model discloses a spherical warming bag which comprises a flexible heating sheet, a buffer layer and a power supply unit. The flexible heating sheet is provided with an insulating layer and a heating wire, and the heating wire is arranged on the insulating layer and comprises a power supply interface for inputting power; the buffer layer is made of an elastic soft material; the power supply unit is electrically connected with the power supply interface and has a charging hole communicated with the outside to connect with an external power supply for charging. The number of the flexible heating sheets is at least two, connecting pieces are arranged on the edges of the surfaces of the flexible heating sheets, and the flexible heating sheets are 8-shaped. The connected flexible heating sheets are placed horizontally and vertically and are connected in a manner similar to baseball stitches so as to form a spherical shape. The flexible heating piece is used for replacing a traditional hard heating assembly, so that the heating pad can be matched with the elastic buffer layer, and the heating pad can be better attached to all parts of the body. And when the external force is removed, the original shape can be changed back. In addition, the flexible heating sheet can be detached from the heating device, and the connecting piece is connected to different objects to increase the use mode.

Description

Technical Field

[0001] This utility model relates to the field of portable heaters, and in particular to a spherical hand warmer that can be freely deformed in shape. Background Technology

[0002] During the cold season, people often use heating devices to increase environmental or physical comfort. This is especially true for the extremities, which, due to limitations in walking or working, cannot be kept warm like the torso with layers of clothing. When going out or to places where access to electricity is difficult, most people carry hand warmers to maintain body warmth.

[0003] Hand warmers can be mainly divided into two categories: disposable and reusable. Disposable hand warmers typically use the principle of iron oxide heating, where iron powder reacts with oxygen in the air to release heat. They are convenient to carry and can provide heat for a long time, but they cannot be reheated after use, resulting in resource waste and environmental pollution. Reusable hand warmers are mostly salt solution type, where a metal sheet triggers crystallization to release heat. Although they can be reheated and used, their heat release time is shorter, and they need to be heated to a high temperature (such as hot water or a microwave oven) to be used again, making them less convenient.

[0004] To increase ease of use and reduce environmental pollution from disposable consumables, rechargeable hand warmers have begun to appear on the market. These hand warmers use a built-in battery to power the heating element, thereby increasing the overall temperature of the device for warmth.

[0005] However, due to the material structure of the heating element and the built-in battery in conventional rechargeable hand warmers, most products have a hard outer shell to protect the internal heating element and battery from external impacts. This also makes it difficult for conventional rechargeable hand warmers to conform to the user's body contours. Even with an ergonomic design, when used on areas with complex contours such as the hands or feet, they can only be used in specific postures to effectively transfer heat to the body.

[0006] Furthermore, if the shape is designed for a specific body part, it will lose its ease of use, as it can only fit that specific area. At the same time, the increased surface area will also lead to faster heat dissipation and less heat retention, and the heat energy will easily be lost directly into the air without passing through the body surface, further reducing the battery life or heating capacity of conventional rechargeable hand warmers.

[0007] This utility model addresses the shortcomings of existing rechargeable hand warmers, such as: hard outer shells making it difficult to fit the body surface; ergonomic design reducing the fit area; and increased size leading to increased heat loss. Utility Model Content

[0008] The purpose of this invention is to utilize a flexible heating element combined with an elastic cushioning layer, so that rechargeable hand warmers are no longer limited by the material of the heating element and the internal battery, thus avoiding the constraints of a limited shape and rigid outer shell. Through the flexible heating element and cushioning layer, users can apply external force to change the shape of the spherical hand warmer, making it fit the body more closely.

[0009] This utility model discloses a spherical hand warmer, which is spherical in shape and includes: a flexible heating element, a buffer layer, and a power supply unit. The flexible heating element is made of elastic material and has: an insulation layer and a heating wire. The heating wire, which provides heat energy, is disposed on the insulation layer and includes a power supply interface for inputting electricity. The buffer layer is made of elastic soft material. The power supply unit is electrically connected to the power supply interface and has a charging port for connecting to an external power source for charging.

[0010] In a preferred embodiment of this invention, the flexible heating element generates heat via a heating wire powered by electricity from a power supply unit. The spherical hand warmer of this invention comprises, from the innermost to the outermost layer: a power supply unit, a buffer layer, and the flexible heating element. The buffer layer covers the outer surface of the power supply unit; and the flexible heating element covers the buffer layer. The spherical hand warmer has an opening to expose the charging port of the power supply unit. Users can apply external force to the elastic flexible heating element and buffer layer outside the power supply unit to deform the spherical hand warmer and make it fit more snugly.

[0011] In a preferred embodiment of this invention, the flexible heating element comprises two pieces, and a connector is provided on the surface edge of each flexible heating element. Multiple flexible heating elements can be interconnected via the connectors to enclose the power supply unit and buffer layer, forming a spherical shape.

[0012] Preferably, the connector can be a zipper.

[0013] In a preferred embodiment of this utility model, the plurality of flexible heating elements can be directly connected to a buffer layer or other items via connectors, and can be repeatedly disassembled to change the usage method according to the usage scenario.

[0014] Preferably, the connector can be Velcro or a magnet.

[0015] In a preferred embodiment of this utility model, the outer surface of the plurality of flexible heating elements is provided with an outer protective layer to prevent external hard objects from damaging the heating wires of the flexible heating elements.

[0016] In a preferred embodiment of this utility model, the multiple flexible heating elements are shaped like the number 8, and the connected flexible heating elements are arranged horizontally and vertically so that they can be connected in a way similar to the stitching of a baseball, thereby forming a spherical shape.

[0017] In a preferred embodiment of this utility model, the heating wire is a conductive ink printed on an insulating layer, such as conductive silver paste or conductive carbon paste.

[0018] In a preferred embodiment of this utility model, the heating wire is a metal fiber filament disposed in the insulating layer, such as stainless steel fiber filament.

[0019] The advantage of this invention lies in replacing traditional rigid heating elements with a flexible heating pad, thus avoiding the possibility of damage from impacts and eliminating the need for a hard outer shell. Furthermore, the flexible buffer layer significantly increases the elastic deformation range under external force, allowing for a more conformal fit to various parts of the body. After the external force is removed, it returns to its original shape, reducing the risk of insufficient heating effect or battery life caused by increasing surface area or affecting the size of the heating element to conform to ergonomics. Because the flexible heating pad can deform freely, it can also be detached and connected to different items using connectors, increasing its versatility. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the flexible heating element unfolded according to an embodiment of the present invention;

[0022] Figure 3 This is a perspective view of an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram illustrating the application of an embodiment of the present utility model; and

[0024] Figure 5 This is a schematic diagram of the outer protective layer of an embodiment of the present utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1: Flexible heating element;

[0027] 10: Contact point;

[0028] 11: Insulation layer;

[0029] 12: Heating wire;

[0030] 121: Power supply interface;

[0031] 13: Connectors;

[0032] 2: Buffer layer;

[0033] 3: Power supply unit;

[0034] 30: Open;

[0035] 31: Charging port;

[0036] 4: Outer protective layer. Detailed Implementation

[0037] To facilitate understanding of this utility model, it will be described in detail below with reference to the accompanying drawings and embodiments. The drawings show some, but not all, embodiments of this utility model. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without any inventive effort are within the scope of protection of this utility model.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0039] Figures 1 to 5 This is a schematic diagram of an embodiment of the present utility model, as shown below. Figure 1 Cross-sectional schematic diagram of the embodiment of this utility model and Figure 2 The schematic diagram of the flexible heating element 1 in this embodiment of the present invention is shown. The spherical hand warmer of the present invention includes: a flexible heating element 1, a buffer layer 2, and a power supply unit 3. The flexible heating element 1 has: an insulating layer 11 and a heating wire 12, the heating wire 12 being disposed on the insulating layer 11 and including a power supply interface 121 for inputting power; the buffer layer 2 is an elastic soft material; the power supply unit 3 is electrically connected to the power supply interface 121, and the flexible heating element 1 and the buffer layer 2 form an opening 30 for connecting to the outside world, allowing the charging port 31 to connect to an external power source for charging.

[0040] like Figure 1 As shown, the spherical hand warmer of this invention comprises, from the innermost layer to the outermost layer: a power supply unit 3, a buffer layer 2, and a flexible heating element 1. The buffer layer 2 covers the outer surface of the power supply unit 3 except for the charging port 31; and the flexible heating element 1 covers the buffer layer 2 and exposes the charging port 31. Users can apply external force to the elastic flexible heating element 1 and the buffer layer 2 on the outside of the power supply unit 3 to deform the spherical hand warmer of this invention and make it fit more snugly.

[0041] Specifically, because the flexible heating element 1 is elastic and not easily broken, it can be bent freely to conform to the curves of the human body. Furthermore, the buffer layer 2 allows for a closer fit to the body and protects the power supply unit 3 from impacts. When the device is compressed, the buffer layer 2 distributes the pressure, reducing the sensation of foreign objects transmitted to the user from the sharp-edged power supply unit 3, thus improving user comfort when using it against the body.

[0042] like Figure 2 As shown, the flexible heating element 1 consists of two pieces, both with an outline shaped like an 8, and a connector 13 is provided on the surface edge of the flexible heating element 1. The flexible heating elements 1 can be connected to each other through the connector 13, thereby covering the power supply unit 3 and the buffer layer 2.

[0043] Preferably, the connector 13 can be a zipper, and the flexible heating elements 1 can be connected or separated by the zipper.

[0044] like Figure 2 as well as Figure 3 As shown in the three-dimensional schematic diagram of the embodiment of this utility model, the flexible heating element 1 consists of two pieces, both of which are shaped like the number 8. The flexible heating elements 1 are arranged horizontally and vertically, so that they can be connected in a way similar to a baseball with stitching, to form a spherical shape that covers the power supply unit 3 and the buffer layer 2.

[0045] In detail, the baseball stitching method involves making contact point 10 by bringing the longest side of one flexible heating element 1 into contact with the narrowest side of another flexible heating element 1. Then, the flexible heating elements 1 are bent towards the center of the ball, and in the process, starting from contact point 10, the two flexible heating elements 1 are connected along the contact edge.

[0046] like Figure 4 As shown in the schematic diagram of the application of this utility model embodiment, the flexible heating element 1 can be directly connected to the buffer layer 2 or other items through the connector 13, and can be repeatedly disassembled to change the usage mode according to the usage scenario.

[0047] Specifically, the connector 13 can be Velcro, tape, or an adhesive coating for attaching to other objects, such as the cushioning layer 2, clothing, or human body. Furthermore, when the flexible heating element 1 is removed from the cushioning layer 2 and directly attached to other items, clothing, or the human body, the power supply unit 3 can be removed from the opening 30 for use; or an external power source can be connected to the power supply interface 121 to supply power to the flexible heating element 1 for use in different scenarios.

[0048] Furthermore, the connector 13 can also be a magnet, and the surface edge of the flexible heating element 1 can be provided with corresponding N poles and S poles for mutual adsorption and adhesion, thereby being disposed on the outer surface of the buffer layer 2 or the surface of other items.

[0049] like Figure 5 As shown in the schematic diagram of the outer protective layer 4 of this utility model embodiment, an outer protective layer 4 is provided on the outer surface of a plurality of flexible heating elements 1 to prevent external hard objects from damaging the heating wires 12 of the flexible heating elements 1. In detail, the outer protective layer 4 covers the outer surface corresponding to the heating wires 12, so that the heating wires 12 are not directly scratched by external objects. When the flexible heating elements 1 are disposed on the outside of the buffer layer 2, the side of the flexible heating elements 1 that contacts the buffer layer 2 is the inner surface, and the opposite side is the outer surface.

[0050] Preferably, the heating wire 12 is a conductive ink printed on the insulating layer 11, such as conductive silver paste or conductive carbon paste. Alternatively, several layers of conductive silver paste with high conductivity and conductive carbon paste with high impedance can be stacked together.

[0051] Preferably, the heating wire 12 is a metal fiber filament disposed on the insulation layer 11, such as stainless steel fiber filament.

[0052] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various changes and modifications without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A ball-shaped heat pack formed in a ball shape, characterized by, include: A flexible heating element, made of elastic material, has the following characteristics: An insulating layer; as well as A heating wire for providing heat energy is disposed on the insulating layer and includes a power supply interface; and A buffer layer, made of elastic soft material; and A power supply unit is electrically connected to the power supply interface and has a charging port for connecting to an external power source; The buffer layer covers the outer surface of the power supply unit, and the flexible heating element covers the outer surface of the buffer layer to form a spherical shape; and The flexible heating element is powered by the power supply unit to generate heat in the heating wire.

2. The spherical-shaped heat pack of claim 1, wherein, The flexible heating element consists of two pieces, and the outline of each flexible heating element is formed in the shape of an 8. A connector is provided on the surface edge of each of the multiple flexible heating elements. The multiple flexible heating elements are interconnected by the connector to form the spherical shape, which is used to cover the power supply unit and the buffer layer.

3. The spherical-shaped heat pack of claim 2, wherein, The connector is a zipper.

4. The spherical-shaped heat pack of claim 1, wherein, The flexible heating element consists of two pieces, and the outline of the multiple flexible heating elements is figure-eight shaped. The multiple flexible heating elements are connected by stitches to form the spherical shape.

5. The spherical-shaped heat pack of claim 2, wherein, The connector is Velcro or a magnet; The flexible heating element is connected to the buffer layer via the connector and can be repeatedly disassembled.

6. The spherical-shaped packable warmer of any one of claims 1 to 5, wherein, The outer surface of the multiple flexible heating elements is also provided with an outer protective layer to prevent external hard objects from damaging the multiple flexible heating elements.

7. The spherical-shaped heat pack of claim 6, wherein, The heating wire is formed by printing a conductive ink onto the insulating layer.

8. The spherical-shaped heat pack of claim 7, wherein, The conductive ink is conductive silver paste or conductive carbon paste.

9. The spherical-shaped heat pack of claim 6, wherein, The heating wire is formed from a metal fiber filament disposed on the insulating layer.

10. The spherical-shaped heat pack of claim 9, wherein, The metal fiber filaments are stainless steel fiber filaments.

Images