Hand warmer

Abstract

The utility model provides a hand warmer which comprises a shell provided with a first positioning part and a second positioning part; the control circuit board is arranged on the first positioning part and is provided with a spring needle; the heating device is arranged on the second positioning part and provided with a contact, and the contact abuts against the spring needle so that the heating device and the control circuit board can be electrically connected together. According to the hand warmer, the first positioning part and the second positioning part are arranged on the shell, during installation, the first positioning part can be used for positioning the control circuit board so as to fix the position of the control circuit board, namely, the spring needle is positioned, and the second positioning part can be used for positioning the heating device so as to fix the position of the heating device. Therefore, when the control circuit board is arranged on the first positioning part and the heating device is arranged on the second positioning part, the contact can abut against the corresponding spring needle, the assembly operation is convenient, and the problem of abnormal function caused by reverse insertion is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of small household appliances, in particular to a hand warmer. BACKGROUND

[0002] A hand warmer is a small household appliance used for warmth in winter, mainly providing heat to keep warm. There are many types and application scenarios of hand warmers, suitable for different needs and occasions.

[0003] At present, the commonly used lithium battery hand warmers on the market mainly include a battery, a circuit board, a heating device, a temperature sensor and an external shell. The battery is usually a lithium battery, which provides electric energy; the circuit board is responsible for controlling and managing the use of electric energy; the heating device converts electric energy into heat energy to provide warmth; the probe of the temperature sensor abuts against the heating device; and the external shell protects the internal structure and provides a comfortable grip. Although the above-mentioned lithium battery hand warmer can start heating in a short time to meet the demand for rapid warming, since the connection mode of the heating device and the circuit board is wire bonding or terminal connection, wire bonding requires using a welding tool to weld the wire with the heating device and the circuit board together, and terminal connection requires welding a terminal on the heating device, welding a terminal female seat on the circuit board, and then inserting the terminal and the female seat together, which is troublesome to assemble and is prone to the problem of reverse insertion leading to abnormal function. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the present application provides a hand warmer to solve the problems in the related art, and the technical scheme is as follows:

[0005] The embodiment of the present application provides a hand warmer, which comprises:

[0006] A shell, wherein the shell is provided with a first positioning part and a second positioning part;

[0007] A control circuit board, wherein the control circuit board is arranged on the first positioning part, and the control circuit board is provided with a spring needle; and

[0008] A heating device, wherein the heating device is arranged on the second positioning part, the heating device is provided with a contact point, the contact point abuts against the spring needle, so that the heating device and the control circuit board are electrically connected together.

[0009] In an embodiment, the shell comprises:

[0010] A main shell, wherein the main shell is provided with the first positioning part and the second positioning part; and

[0011] A heat conductor, wherein the heat conductor is arranged outside the main shell, and the heat conductor covers the heating device.

[0012] In an embodiment, the second positioning part comprises a first positioning groove, which accommodates the heat generating device and is adapted to the heat conducting body.

[0013] In an embodiment, the main housing has an inner cavity and an avoiding hole, the inner cavity is located below the first positioning groove, the inner cavity has the first positioning part, the avoiding hole is located on the bottom wall of the first positioning groove and communicates the first positioning groove and the inner cavity, and the avoiding hole is used for the spring needle to pass through.

[0014] In an embodiment, the main housing comprises:

[0015] a lower housing; and

[0016] an upper housing, which is provided with the second positioning part, and the upper housing and the lower housing are connected and surround the inner cavity.

[0017] In an embodiment, the lower housing is provided with a first clamping part, the upper housing is provided with a second clamping part, and the second clamping part and the first clamping part are connected to connect the upper housing and the lower housing together.

[0018] In an embodiment, the upper housing has a first connecting hole, which is located on the bottom wall of the first positioning groove and penetrates the upper housing up and down;

[0019] The heat conducting body is provided with a first connecting buckle, which penetrates the first connecting hole and abuts against the bottom wall of the upper housing to connect the heat conducting body and the upper housing together.

[0020] In an embodiment, the inner cavity is provided with a power supply module, the power supply module and the control circuit board are electrically connected, and the power supply module and the control circuit board are arranged in sequence along the length direction of the outer housing.

[0021] In an embodiment, the heat generating device comprises a heat generating sheet, the heat generating sheet is attached to the heat conducting body, and the heat generating sheet is provided with the contact point.

[0022] In an embodiment, the outer side wall of the outer housing is provided with a second positioning groove.

[0023] The hand warmer further comprises a lens, which is adapted to the second positioning groove.

[0024] The above technical solution has at least the following advantages or beneficial effects:

[0025] The warming hand treasure of the utility model, through setting first positioning part and second positioning part in shell, can utilize first positioning part to position control circuit board to fix position of control circuit board, namely position pogo pin, can utilize second positioning part to position heating device to fix position of heating device, namely position contact, so that contact and corresponding pogo pin abut under condition that control circuit board is arranged in first positioning part and heating device is arranged in second positioning part, convenient to assemble, and will not appear function abnormal problem caused by inserting reversely, can greatly improve assembling efficiency.

[0026] The above summary is intended to illustrate only and is not intended to limit the application in any way. Further aspects, implementations, and features of the application will be apparent from a review of the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0027] In the drawings, like reference numerals are used to indicate like elements throughout the several views. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and should not be construed as limiting the scope of the application.

[0028] Figure 1 is a perspective view of the warming hand treasure of the utility model under a first viewing angle;

[0029] Figure 2 is a perspective view of the warming hand treasure of the utility model under a second viewing angle;

[0030] Figure 3 is an exploded view of the warming hand treasure of the utility model under the first viewing angle;

[0031] Figure 4 is a partial exploded view of the warming hand treasure of the utility model under the second viewing angle;

[0032] Figure 5 is a sectional view of the warming hand treasure of the utility model under a third viewing angle;

[0033] Figure 6 is a partial enlarged view of A in Figure 5

[0034] REFERENCE NUMERALS

[0035] ​1, shell; 11, main shell; 111, lower shell; 1111, first buckle part; 1112, second positioning groove; 1113, second connecting hole; 112, upper shell; 1121, second positioning part; 11211, first positioning groove; 1122, avoiding hole; 1123, second buckle part; 1124, first connecting hole; 113, inner cavity; 1131, first positioning part; 12, heat conduction body; 121, first connecting buckle; 2, control circuit board; 21, spring needle; 3, heating device; 31, contact; 4, power supply module; 5, lens; 51, second connecting buckle. DETAILED DESCRIPTION

[0036] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0037] Referring to Figures 1-6 , a hand warmer of a preferred embodiment of the present application is shown, comprising:

[0038] The shell 1 is provided with a first positioning part 1131 and a second positioning part 1121.

[0039] The control circuit board 2 is arranged on the first positioning part 1131, and the control circuit board 2 is provided with a spring needle 21.

[0040] The heating device 3 is arranged on the second positioning part 1121, and the heating device 3 is provided with a contact 31, and the contact 31 and the spring needle 21 abut to electrically connect the heating device 3 and the control circuit board 2 together.

[0041] The hand warmer of the present application, by arranging the first positioning part 1131 and the second positioning part 1121 on the shell 1, when installing, the first positioning part 1131 can be used to position the control circuit board 2 to fix the position of the control circuit board 2, that is, to position the spring needle 21, and the second positioning part 1121 can be used to position the heating device 3 to fix the position of the heating device 3, that is, to position the contact 31, so that the contact 31 and the corresponding spring needle 21 can abut in the case that the control circuit board 2 is arranged on the first positioning part 1131 and the heating device 3 is arranged on the second positioning part 1121, the assembly operation is convenient, and the function abnormal problem caused by inserting in reverse will not occur, and the assembly efficiency can be greatly improved.

[0042] Referring to Figures 1-4 In an embodiment, the shell 1 comprises:

[0043] The main shell 11 is provided with a first positioning part 1131 and a second positioning part 1121; and

[0044] The heat conductor 12 is arranged outside the main shell 11, and covers the heat generating device 3. Thus, when the heat generating device 3 works, the heat generated by the heat generating device 3 can be transferred to the heat conductor 12, and the heat conductor 12 absorbs the heat and rapidly heats up, so that the heating efficiency can be improved.

[0045] In an embodiment, the heat conductor 12 is made of aluminum material, so as to further improve the heat transfer efficiency, thereby further improving the heating efficiency.

[0046] In other embodiments, the heat conductor 12 can also be made of copper, aluminum alloy or other materials, as long as it can play a heat conduction role.

[0047] In an embodiment, the second positioning part 1121 includes a first positioning groove 11211, which accommodates the heat generating device 3 and is adapted to the heat conductor 12, that is, the first positioning groove 11211 can meet the requirement of accommodating the heat generating device 3, and at the same time, the first positioning groove 11211 can also position the heat conductor 12. Thus, when installing, the heat generating device 3 can be pre-assembled on the heat conductor 12, and then the heat conductor 12 pre-assembled with the heat generating device 3 is arranged in the first positioning groove 11211, so as to position the heat conductor 12, that is, to position the heat generating device 3. The installation operation is simple and convenient, and the installation efficiency is high.

[0048] Referring to Figure 3 and Figure 5 In an embodiment, the main shell 11 has an inner cavity 113 and a relief hole 1122. The inner cavity 113 is located below the first positioning groove 11211, and the inner cavity 113 has the first positioning part 1131. The relief hole 1122 is located on the bottom wall of the first positioning groove 11211 and communicates the first positioning groove 11211 and the inner cavity 113, and is used for the spring needle 21 to pass through. Thus, the control circuit board 2 and the heat generating device 3 can be arranged one by one along the height direction of the shell 1, so as to separate the control circuit board 2 and the heat generating device 3, thereby avoiding the heat generated by the heat generating device 3 from affecting the control circuit board 2 when the heat generating device 3 works, and ensuring that the control circuit board 2 can normally operate.

[0049] For the convenience of installation of the control circuit board 2, referring to Figures 1-5 In an embodiment, the main shell 11 includes:

[0050] The lower shell 111; and

[0051] The upper shell 112 is provided with a second positioning portion 1121, and the upper shell 112 and the lower shell 111 are connected to form an inner cavity 113.

[0052] In an embodiment, the lower shell 111 is provided with a first buckle portion 1111, and the upper shell 112 is provided with a second buckle portion 1123, the second buckle portion 1123 and the first buckle portion 1111 are connected to connect the upper shell 112 and the lower shell 111 together. In this way, by connecting the second buckle portion 1123 and the first buckle portion 1111, the upper shell 112 and the lower shell 111 can be connected together, the installation operation is simple and convenient, and the installation efficiency can be greatly improved.

[0053] In an embodiment, the lower shell 111 and the upper shell 112 are further connected together by screws to further increase the connection stability of the lower shell 111 and the upper shell 112.

[0054] In an embodiment, one of the first buckle portion 1111 and the second buckle portion 1123 is a buckle slot, and the other is a buckle protrusion, and the buckle protrusion and the buckle slot are matched.

[0055] In an embodiment, the lower shell 111 and the upper shell 112 can be connected together only by fasteners such as screws, bolts, rivets, etc.

[0056] In an embodiment, the upper shell 112 has a first connecting hole 1124, the first connecting hole 1124 is located on the bottom wall of the first positioning groove 11211, and the first connecting hole 1124 penetrates the upper shell 112 upward and downward;

[0057] The heat conductor 12 is provided with a first connecting buckle 121, the first connecting buckle 121 penetrates the first connecting hole 1124 and abuts against the bottom wall of the upper shell 112 to connect the heat conductor 12 and the upper shell 112 together, the connecting structure composed of the first connecting buckle 121 and the first connecting hole 1124 is simple and practical, and the first connecting buckle 121 and the first connecting hole 1124 can be covered by the heat conductor 12, so that the first connecting buckle 121 and the first connecting hole 1124 can be hidden in the shell 1, the appearance structure of the hand warmer can be simplified, and the appearance of the hand warmer is more beautiful.

[0058] In other embodiments, the heat conductor 12 can also be connected together with the upper shell 112 by fasteners such as screws, rivets, etc.

[0059] In an embodiment, the inner cavity 113 is provided with a power supply module 4, the power supply module 4 is electrically connected with the control circuit board 2, and the power supply module 4 and the control circuit board 2 are arranged in sequence along the length direction of the shell 1. The power supply module 4 can supply power to the control circuit board 2, ensuring that the control circuit board 2 can operate normally without external power supply. The power supply module 4 and the control circuit board 2 are arranged in sequence along the length direction of the shell 1, which can improve the space utilization of the length direction of the shell 1, and make the overall structure of the hand warmer more compact and small.

[0060] In an embodiment, the power supply module 4 includes a rechargeable battery, which can be used repeatedly and can reduce the use cost.

[0061] In other embodiments, the power supply module 4 can also include a non-rechargeable battery.

[0062] In an embodiment, the heating device 3 includes a heating sheet, the heating sheet is attached to the heat conductor 12, and the heating sheet is provided with a contact 31. Since the heating sheet is flat, the contact area between the heating sheet and the heat conductor 12 can be increased, thereby improving the heat conduction efficiency and in turn improving the heating efficiency. In addition, the heating sheet has a thin wall thickness and occupies less space, which is more conducive to the compactness and miniaturization of the hand warmer.

[0063] In an embodiment, the heating sheet is connected to the heat conductor 12 through a glue layer, so that the heating sheet and the heat conductor 12 are reliably connected together, which is conducive to further improving the heat conduction efficiency.

[0064] In an embodiment, the heating sheet is a PI heating sheet, i.e., a polyimide heating sheet. The heating sheet has good flexibility, thin thickness, high insulation strength, no toxicity, and good heat resistance, so that the overall structure of the heating device 3 is more compact, which can greatly reduce the occupied space, thereby being more conducive to the compactness or miniaturization design of the hand warmer.

[0065] In other embodiments, the heating sheet can also be any one of a USB heating sheet, a silica gel heating sheet (silicone rubber heating sheet), a mica heating sheet, an MCH heating sheet, a ceramic heating sheet, a silicon heating sheet, a soft carbon crystal floor heating sheet, a PET electric heating film polyester heating sheet, an aluminum foil heating sheet, etc.

[0066] In other embodiments, the heating device 3 can also include a heating wire, a heating tube, etc.

[0067] Referring to Figure 3 and Figure 4 In an embodiment, the outer side wall of the shell 1 is provided with a second positioning groove 1112.

[0068] The hand warmer further comprises a lens 5, the lens 5 and the second positioning groove 1112 are matched, so that the lens 5 can be positioned by matching the lens 5 with the second positioning groove 1112, the installation efficiency of the lens 5 can be improved, the lens 5 can be reliably fixed on the shell 1, in addition, the lens 5 can make the hand warmer have a mirror function, the function of the hand warmer is enriched, the utilization rate of the hand warmer is improved, and the hand warmer is more convenient to use.

[0069] Referring to Figure 3 and Figure 4 In an embodiment, the second positioning groove 1112 has a second connecting hole 1113, the frame bottom of the lens 5 is provided with a second connecting buckle 51, the second connecting buckle 51 and the second connecting hole 1113 are matched to reliably connect the lens 5 and the shell 1 together.

[0070] Of course, in other embodiments, the lens 5 can be connected with the shell 1 through a glue layer.

[0071] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0072] In addition, the terms "first", "second" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0073] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A hand warmer, characterized by, The application relates to a hand warmer. The hand warmer comprises: a shell provided with a first positioning part and a second positioning part; a control circuit board arranged on the first positioning part, wherein a spring needle is arranged on the control circuit board; and a heating device arranged on the second positioning part, wherein the heating device is provided with a contact point, the contact point and the spring needle abut to electrically connect the heating device and the control circuit board together.

2. The hand warmer according to claim 1, wherein The shell comprises: a main shell provided with the first positioning part and the second positioning part; and a heat conduction body arranged outside the main shell, wherein the heat conduction body covers the heating device.

3. The hand warmer according to claim 2, wherein The second positioning part comprises a first positioning groove, the first positioning groove contains the heating device and is matched with the heat conduction body.

4. The hand warmer according to claim 3, wherein The main shell has an inner cavity and an avoiding hole, the inner cavity is located below the first positioning groove, the inner cavity is provided with the first positioning part, the avoiding hole is located on the bottom wall of the first positioning groove and is communicated with the first positioning groove and the inner cavity, and the avoiding hole is used for allowing the spring needle to pass through.

5. The hand warmer according to claim 4, wherein The main shell comprises: a lower shell; and an upper shell provided with the second positioning part, wherein the upper shell and the lower shell are connected, and the upper shell and the lower shell enclose the inner cavity.

6. The hand warmer according to claim 5, wherein The lower shell is provided with a first buckle part, the upper shell is provided with a second buckle part, the second buckle part is connected with the first buckle part to connect the upper shell and the lower shell together.

7. The hand warmer according to claim 5, wherein The upper shell has a first connecting hole, the first connecting hole is located on the bottom wall of the first positioning groove and penetrates the upper shell upward and downward; the heat conduction body is provided with a first connecting buckle, the first connecting buckle penetrates the first connecting hole and abuts against the bottom wall of the upper shell to connect the heat conduction body and the upper shell together.

8. The hand warmer according to claim 4, wherein A power supply module is arranged in the inner cavity, the power supply module is electrically connected with the control circuit board, and the power supply module and the control circuit board are arranged in sequence along the length direction of the shell.

9. The hand warmer according to claim 2, wherein The heating device comprises a heating sheet, the heating sheet is attached to the heat conduction body, and the heating sheet is provided with the contact point.

10. The hand warmer according to claim 1, wherein The outer side wall of the shell is provided with a second positioning groove; the hand warmer further comprises a lens, and the lens is matched with the second positioning groove.

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