A hand warmer

Abstract

An embodiment of the present invention provides a hand warmer, which relates to the field of daily necessities. The hand warmer includes a heating element, a first conduction member, and a second conduction member. The heating element has a first heating area and a second heating area. One side of the first conduction member covers the first heating area. A part of the second conduction member covers the side of the first conduction member away from the first heating area, and another part of the second conduction member covers the second heating area. Although the heating temperature of the first heating area during operation is higher than that of the second heating area during operation, the thermal conductivity coefficient of the first conduction member is less than that of the second conduction member. In this way, the temperatures of the various parts of the second conduction member are close, and the situation of scalding the user due to the local overheating of the second conduction member can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of daily necessities, and more particularly, to a hand warmer. Background Art

[0002] Hand warmers mainly use electric heating technology for heating. Generally, an electric heating wire or a carbon fiber heating film is attached to a metal shell, and then the electric heating wire or the carbon fiber heating film is energized. After the electric heating wire or the carbon fiber heating film is heated, heat is generated and transferred to the metal shell. The user places the hand on the metal shell to achieve the purpose of warming.

[0003] When a traditional hand warmer is working, the heating areas of the electric heating wire or the carbon fiber heating film are not balanced. That is to say, there are both heating areas with higher heating temperatures and heating areas with lower heating temperatures on the electric heating wire or the carbon fiber heating film. In this way, the temperatures of different parts of the metal shell are different, and it is easy to burn the user's hand on the part of the metal shell with a higher temperature. Summary of the Invention

[0004] An object of the present invention is to provide a hand warmer, which can effectively improve the above-mentioned technical problems.

[0005] Embodiments of the present invention are implemented as follows:

[0006] In a first aspect, an embodiment of the present invention provides a hand warmer, including:

[0007] A heating element, the heating element having a first heating area and a second heating area;

[0008] A first heat conduction member, one side of the first heat conduction member covering the first heating area;

[0009] A second heat conduction member, a part of the second heat conduction member covering the side of the first heat conduction member away from the first heating area, and another part of the second heat conduction member covering the second heating area;

[0010] Wherein, the heating temperature of the first heating area during operation is higher than that of the second heating area during operation, and the heat conduction coefficient of the first heat conduction member is less than that of the second heat conduction member.

[0011] In an optional embodiment, the second heating area is arranged to surround the first heating area along the circumferential direction of the first heating area. The second heat conduction member includes a first conduction portion and a second conduction portion connected to each other. The second conduction portion is arranged to surround the first conduction portion along the circumferential direction of the first conduction portion. The first conduction portion covers the side of the first heat conduction member away from the first heating area, and the second conduction portion covers the second heating area.

[0012] In an alternative embodiment, the hand warmer further includes a mounting shell located on a side of the heating element away from the first conductive member. The mounting shell is connected to the second conductive member to confine the heating element and the first conductive member between the mounting shell and the second conductive member.

[0013] In an alternative embodiment, an edge of the second conductive member is bent, and a first buckle is provided on an inner side of the edge of the second conductive member. An edge of the mounting shell is bent to be adapted to the edge of the second conductive member, and a second buckle is provided on an outer side of the edge of the mounting shell. The second conductive member covers the mounting shell so that the first buckle is engaged with the second buckle.

[0014] In an alternative embodiment, a fixing groove is provided on a side of the mounting shell close to the heating element, and the heating element is embedded in the fixing groove.

[0015] In an alternative embodiment, through holes are provided in a portion of the second conductive member covering a side of the first conductive member away from the first heating area, and both the first conductive member and the first heating area are made of a transparent material;

[0016] The hand warmer further includes a light-emitting body, and the mounting shell is further provided with a receiving groove for receiving the light-emitting body. An area enclosed by the receiving groove, the first heating area, and an area enclosed by the through holes are correspondingly arranged.

[0017] In an alternative embodiment, the hand warmer further includes a battery electrically connected to the heating element. A card slot is provided on a side of the mounting shell away from the heating element, and an area where the card slot is located is misaligned with an area where the first heating area covers the mounting shell. The battery is snapped into the card slot.

[0018] In an alternative embodiment, the number of the card slots is two, and the two card slots are symmetrically arranged with respect to an area where the first heating area covers the mounting shell. The batteries are snapped into both of the two card slots.

[0019] In an alternative embodiment, the mounting shell is further provided with a wire passing hole penetrating through opposite sides of the mounting shell. The wire passing hole is used for allowing a cable to extend from the battery to the heating element.

[0020] In an alternative embodiment, the numbers of the first conductive member, the second conductive member, the heating element, and the mounting shell are all two, and they are symmetrically arranged with respect to a reference plane, and the reference plane is a joint surface where the two mounting shells are attached to each other.

[0021] The beneficial effects of the embodiments of the present invention include, for example:

[0022] An embodiment of the present invention provides a hand warmer, which includes a heating element, a first conduction member, and a second conduction member. The heating element has a first heating area and a second heating area. One side of the first conduction member covers the first heating area, a part of the second conduction member covers the side of the first conduction member away from the first heating area, and another part of the second conduction member covers the second heating area. In this way, the heat generated when the first heating area works can be transferred to the second conduction member through the first conduction member, and the heat generated when the second heating area works can be directly transferred to the second conduction member. Although the heating temperature when the first heating area works is higher than the heating temperature when the second heating area works, since the thermal conductivity coefficient of the first conduction member is less than that of the second conduction member, the first conduction member can reduce the transfer of some heat to the second conduction member, so that the heat transferred from the first heating area to the second conduction member through the first conduction member is close to the heat directly transferred from the second heating area to the second conduction member. In this way, the temperatures of each part of the second conduction member are close, and the situation where the user is scalded due to the too high local temperature of the second conduction member can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is an exploded schematic view of the hand warmer provided by the embodiment of the present invention;

[0025] Figure 2 is a schematic structural view of the heating element provided by the embodiment of the present invention;

[0026] Figure 3 is a schematic structural view of the second conduction member provided by the embodiment of the present invention from a first perspective;

[0027] Figure 4 is a schematic structural view of the installation shell provided by the embodiment of the present invention from a first perspective;

[0028] Figure 5 is a schematic structural view of the second conduction member provided by the embodiment of the present invention from a second perspective;

[0029] Figure 6 is a schematic structural view of the installation shell provided by the embodiment of the present invention from a second perspective.

[0030] Icons: 1 - Hand warmer; 11 - Heating element; 111 - First heating area; 112 - Second heating area; 12 - First conduction piece; 13 - Second conduction piece; 131 - First conduction part; 132 - Second conduction part; 133 - First buckle; 134 - Through hole; 14 - Installation shell; 141 - Second buckle; 142 - Fixing groove; 143 - Accommodating groove; 144 - Card slot; 145 - Installation groove; 146 - Wire passing hole; 15 - Battery; 16 - Electric control component. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0033] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0035] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0036] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Please refer to Figure 1 and Figure 2 , this embodiment provides a hand warmer 1, which includes a heating element 11, a first conduction member 12, and a second conduction member 13. The heating element 11 has a first heating area 111 and a second heating area 112. One side of the first conduction member 12 covers the first heating area 111, and a part of the second conduction member 13 covers the side of the first conduction member 12 away from the first heating area 111, and another part of the second conduction member 13 covers the second heating area 112.

[0038] In this way, the heat generated when the first heating area 111 works can be transferred to the second conduction member 13 through the first conduction member 12, and the heat generated when the second heating area 112 works can be directly transferred to the second conduction member 13.

[0039] It can be understood that although the heating temperature when the first heating area 111 works is higher than the heating temperature when the second heating area 112 works, since the thermal conductivity coefficient of the first conduction member 12 is less than that of the second conduction member 13, the first conduction member 12 can reduce part of the heat transferred to the second conduction member 13, so that the heat transferred from the first heating area 111 to the second conduction member 13 through the first conduction member 12 is close to the heat directly transferred from the second heating area 112 to the second conduction member 13. In this way, the temperatures of each part of the second conduction member 13 are close, and the situation that the user is scalded due to the too high local temperature of the second conduction member 13 can be reduced.

[0040] It should be noted that in this embodiment, the second conduction member 13 is made of a metal material, and its heat conduction performance is good, which can effectively realize the hand warming function.

[0041] In this embodiment, the first conduction member 12 can be made of a plastic material, such as: PC board, PET, PI, silicone, acrylic and other materials. The thermal conductivity coefficient of the first conduction member 12 made of the above plastic materials is less than that of the second conduction member 13, which can effectively reduce the heat transferred from the first heating area 111 to the second conduction member 13 and reduce the situation that the user is scalded due to the too high local temperature of the second conduction member 13.

[0042] Please refer toFigures 1-3 , in this embodiment, the second conductive member 13 includes a first conductive portion 131 and a second conductive portion 132 that are connected to each other. The first conductive portion 131 covers one side of the first conductive member 12 away from the first heating area 111, and the second conductive portion 132 covers the second heating area 112.

[0043] That is to say, in this embodiment, the heat generated when the first heating area 111 works is transferred to the first conductive portion 131 through the first conductive member 12. The heat generated when the second heating area 112 works is directly conducted to the second conductive portion 132.

[0044] It should be noted that, in this embodiment, the second heating area 112 is arranged to surround the first heating area 111 along the circumferential direction of the first heating area 111. Correspondingly, the second conductive portion 132 is arranged to surround the first conductive portion 131 along the circumferential direction of the first conductive portion 131. In this way, it is convenient for the user to warm the hands in different positions, and the user's hand can reach the purpose of warming the hands by contacting the first conductive portion 131 or the second conductive portion 132.

[0045] Please refer to Figure 1 and Figure 2 , in this embodiment, the hand warmer 1 further includes a mounting shell 14, and the mounting shell 14 is located on the side of the heating element 11 away from the first conductive member 12. It can be understood that the heating element 11 and the first conductive member 12 are located between the mounting shell 14 and the first conductive member 12. After the second conductive member 13 is installed on the mounting shell 14, the heating element 11 and the first conductive member 12 are restricted between the second conductive member 13 and the mounting shell 14.

[0046] In this way, it can play a fixing role for the heating element 11 and the first conductive member 12, avoid relative movement between the heating element 11 and the first conductive member 12, and enable the first conductive member 12 to maintain the state of covering the first heating area 111.

[0047] Specifically, in this embodiment, both the heating element 11 and the first conductive member 12 are in a sheet structure. The heating element 11 and the second conductive member 13 are stacked and bonded to each other, which can reduce the relative movement between the heating element 11 and the first conductive member 12.

[0048] Specifically, in this embodiment, the side of the heating element 11 away from the first conductive member 12 is bonded to the mounting shell 14, and the side of the first conductive member 12 away from the heating element 11 is bonded to the second conductive member 13.

[0049] Combined with Figure 4, in this embodiment, a fixing groove 142 is provided on one side of the mounting shell 14 close to the heating element 11, and the heating element 11 is embedded in the fixing groove 142. In this way, the fixing groove 142 can limit the heating element 11 and reduce the situation that the heating element 11 moves relative to the mounting shell 14.

[0050] Specifically, in this embodiment, the heating element 11 is bonded to the bottom wall of the fixing groove 142.

[0051] Please refer to Figure 1 , Figures 3-5 , in this embodiment, the edges of the second conducting member 13 and the mounting shell 14 are both bent. And, a first buckle 133 is provided on the inner side of the edge of the second conducting member 13, and a second buckle 141 is provided on the outer side of the edge of the mounting shell 14. The second conducting member 13 covers the outer wall of the mounting shell 14, so that the first buckle 133 and the second buckle 141 are snapped together. In this way, the second conducting member 13 and the mounting shell 14 can be relatively fixed. At the same time, the heating element 11 and the first conducting member 12 are located inside the second conducting member 13, and the second conducting member 13 can protect the heating element 11 and the first conducting member 12.

[0052] Please refer to Figure 1 , in this embodiment, the hand warmer 1 further includes a battery 15. The battery 15 is electrically connected to the heating element 11, and the battery 15 can provide electrical energy for the heating element 11.

[0053] Combined with Figure 2 and Figure 6 , in this embodiment, a card slot 144 is provided on the side of the mounting shell 14 away from the heating element 11. The area where the card slot 144 is located is misaligned with the area where the first heating area 111 covers the mounting shell 14, and the battery 15 is clamped in the card slot 144. In this way, the battery 15 is misaligned with the area covered by the first heating area 111, which can avoid the situation that the battery 15 bulges or explodes due to excessive temperature.

[0054] Of course, the card slot 144 can also play a certain role in limiting the battery 15. The battery 15 clamped in the card slot 144 can be relatively fixed with the mounting shell 14.

[0055] Specifically, in this embodiment, the number of the card slots 144 is two. The two card slots 144 are symmetrically arranged with respect to the area where the first heating area 111 covers the mounting shell 14, and the battery 15 is clamped in both of the two card slots 144. It can be understood that, in this embodiment, the two batteries 15 are arranged at intervals, and the two batteries 15 are both misaligned with the area where the first heating area 111 covers the mounting shell 14, which can effectively improve the safety performance.

[0056] It should be noted that in this embodiment, both of the two batteries 15 are 18650 lithium batteries, and the two batteries 15 can be connected in series or in parallel.

[0057] Combined with Figure 4 , in this embodiment, the mounting shell 14 is further provided with a wire passing hole 146. The wire passing hole 146 penetrates through the opposite sides of the mounting shell 14. The cable starting from the battery 15 can pass through the wire passing hole 146 and be connected to the heating element 11. The battery 15 delivers electric energy to the heating element 11 through the cable.

[0058] Please refer to Figures 1-4 , Figure 6 , in this embodiment, a through hole 134 is provided on the first conduction part 131. The hand warmer 1 further includes a light-emitting body (not shown in the figure). The mounting shell 14 is provided with a receiving groove 143 for receiving the light-emitting body. The area enclosed by the receiving groove 143, the first heating area 111, and the area enclosed by the through hole 134 are correspondingly arranged. And, in this embodiment, both the heating element 11 and the first conduction member 12 are made of a transparent material.

[0059] In this way, the user can observe the light-emitting body in the receiving groove 143 through the through hole 134, through the first conduction member 12 and the first heating area 111.

[0060] In some embodiments, the luminous brightness of the light-emitting body can represent the power of the battery 15, that is, when the brightness of the light-emitting body becomes dim, it can indicate that the power of the battery 15 is low, prompting the user to charge.

[0061] In some embodiments, the light-emitting body can be an LED lamp with different luminous colors, such as: two-color lamp, three-color lamp or seven-color lamp. In this way, the light-emitting body can cooperate with color switching or color gradient programs to simulate various gradient colors and running light effects to improve the ornamental value.

[0062] It should be noted that in this embodiment, the second conduction member 13 is a metal shell, and a through hole 134 is opened on the second conduction member 13, which not only enables the user to observe the light-emitting body through the through hole 134, but also can effectively reduce the weight of the second conduction member 13, making the overall hand warmer 1 lighter and more convenient to use and carry.

[0063] It should be noted that in this embodiment, the above-mentioned first conduction member 12 made of plastic material can be prepared into a transparent structure. Correspondingly, in this embodiment, the whole heating element 11 is a transparent structure. Specifically, the heating element 11 can be a transparent graphene electrothermal film, a transparent ITO electrothermal film, a transparent nanosilver wire electrothermal film, a transparent metal mesh electrothermal film, etc.

[0064] It should be noted that in other embodiments, only the area where the first heating zone 111 is located may be made of a transparent material.

[0065] It should be noted that in this embodiment, the heating element 11 is made of a graphene electrothermal film, which is prepared by chemical vapor deposition. The number of graphene layers is controlled between 1 and 10, the light transmittance can reach more than 80%, and the overall thickness is between 0.1 mm and 1 mm. It has good overall heating performance and high light transmittance.

[0066] In addition, the heating element 11 made of graphene material has a far-infrared physiotherapy effect. While heating the user, the heating element 11 also has a health care function. In addition, the graphene material resonates at the same frequency as the human body, and it is not easy for the user to experience skin dryness when using it.

[0067] It should be noted that in actual use, silk screen patterns can be customized on the surfaces of the first conductive member 12 and the heating element 11 for personalized customization according to user needs. When the user is using it, the customized silk screen pattern can also be observed through the through hole 134.

[0068] Combined Figure 1 and Figure 6 , in this embodiment, an installation groove 145 is further provided in the installation shell 14, and an electronic control component 16 is installed in the installation groove 145. The electronic control component 16 is electrically connected to the battery 15, and the battery 15 provides electrical energy for the electronic control component 16.

[0069] It should be noted that in this embodiment, the area where the installation groove 145 is located is also misaligned with the area where the first heating zone 111 covers the installation shell 14, which can reduce the occurrence of safety problems of the electronic control component 16 due to excessive temperature.

[0070] In this embodiment, the outer contours of the installation groove 145 and the electronic control component 16 are both semi-elliptical, which can be adapted to the curved part of the edge of the installation shell 14 and can reduce the space occupied inside the installation shell 14.

[0071] In actual use, the electronic control component 16 can be electrically connected to the above-mentioned heating element 11 to control the heating temperature of the heating element 11, and the electronic control component 16 can also be electrically connected to the above-mentioned light-emitting body to control the light-emitting effect of the light-emitting body.

[0072] Specifically, in actual use, the electronic control component 16 may include an MCU main control board and a power control unit, a heating control unit, an NTC temperature control probe, a switch gear adjustment key, a usb interface, a type-C interface, etc. on the main control board.

[0073] It can be understood that the power control unit can be used to control the power release of the battery 15. The heating control unit can be used to control the heat generation amount of the heating element 11. The temperature control probe can be used to detect the temperature of the battery 15 or the heating element 11 to discover potential safety hazards in a timely manner. The switch gear adjustment key can be used to adjust the start or stop of the heating element 11. The USB interface and the Type-C interface can be used to connect cables to achieve charging or discharging.

[0074] It can be understood that when discharging operations are performed through the USB interface and the Type-C interface, the hand warmer 1 can also be used as a power bank.

[0075] It should be noted that during actual use, the electronic control component 16 can be set with short-circuit protection, overcurrent protection, overvoltage protection, etc. In the case of short-circuit protection, overcurrent protection, and overvoltage protection, the electronic control component 16 can control the overall stop of operation, and subsequent charging is required for activation.

[0076] It should be noted that the above control circuit diagrams are all involved in the related technologies and will not be described in detail here.

[0077] Combined with Figure 1 , in this embodiment, the number of the first conductive member 12, the second conductive member 13, the heating element 11, and the mounting shell 14 is two, and they are all symmetrically arranged with respect to the reference plane, and the reference plane is the joint surface where the two mounting shells 14 are mutually jointed.

[0078] In this way, when the user holds the hand warmer 1 with both hands, both hands can obtain heat, which is convenient for warming both hands simultaneously.

[0079] It should be noted that during actual use, the two heating elements 11 can be connected in series or in parallel.

[0080] The above are only specific embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hand warmer, characterized in that, Comprising: A heating element, which has a first heating area and a second heating area; A first conducting member, one side of which covers the first heating area; A second conducting member, a part of which covers the side of the first conducting member away from the first heating area, and another part of which covers the second heating area; Wherein, the heating temperature of the first heating area during operation is higher than that of the second heating area during operation, and the thermal conductivity of the first conducting member is less than that of the second conducting member; The second heating area is arranged to surround the first heating area along the circumferential direction of the first heating area. The second conducting member includes a first conducting part and a second conducting part connected to each other. The second conducting part is arranged to surround the first conducting part along the circumferential direction of the first conducting part. The first conducting part covers the side of the first conducting member away from the first heating area, and the second conducting part covers the second heating area.

2. The hand warmer according to claim 1, characterized in that, The hand warmer further includes a mounting shell, which is located on the side of the heating element away from the first conducting member. The mounting shell is connected to the second conducting member to limit the heating element and the first conducting member between the mounting shell and the second conducting member.

3. The hand warmer according to claim 2, wherein The edge of the second conducting member is bent. A first buckle is arranged on the inner side of the edge of the second conducting member. The edge of the mounting shell is bent to be adapted to the edge of the second conducting member. A second buckle is arranged on the outer side of the edge of the mounting shell. The second conducting member covers the mounting shell so that the first buckle is engaged with the second buckle.

4. The hand warmer according to claim 2, wherein A fixing groove is arranged on the side of the mounting shell close to the heating element. The heating element is embedded in the fixing groove.

5. The hand warmer according to claim 2, characterized in that, A through hole is arranged at the part where the second conducting member covers the side of the first conducting member away from the first heating area. Both the first conducting member and the first heating area are made of transparent materials; The hand warmer further includes a light-emitting body. The mounting shell is further provided with a receiving groove for receiving the light-emitting body. The area enclosed by the receiving groove, the first heating area, and the area enclosed by the through hole are correspondingly arranged.

6. The hand warmer according to claim 2, characterized in that, The hand warmer further includes a battery, which is electrically connected to the heating element. A card slot is arranged on the side of the mounting shell away from the heating element. The area where the card slot is located is misaligned with the area where the first heating area covers the mounting shell. The battery is clamped in the card slot.

7. The hand warmer according to claim 6, wherein, The number of the card slots is two. The two card slots are symmetrically arranged with respect to the area where the first heating area covers the mounting shell. The battery is clamped in both of the two card slots.

8. The hand warmer according to claim 6, characterized in that, The mounting shell is further provided with a wire passing hole, which penetrates through opposite sides of the mounting shell. The wire passing hole is used for enabling a cable to extend from the battery to the heating element.

9. The hand warmer according to any one of claims 2-8, characterized in that, The number of the first conducting member, the second conducting member, the heating element, and the mounting shell is two, and they are all symmetrically arranged with respect to a reference plane, and the reference plane is the joint surface where the two mounting shells are mutually attached.

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