Portable hand warmer with magnetic attraction function

Abstract

The utility model discloses a portable hand warmer with a magnetic attraction function, which comprises two groups of surface shells and two groups of bottom shells, the surface shells are mounted on the bottom shells, heating sheets are mounted on the surface shells, arc-shaped heat conduction hardware shells are mounted on the heating sheets, and the arc-shaped heat conduction hardware shells are connected with the surface shells; magnet positioning cavities are formed in the top and the bottom of the inner wall of the bottom shell, and magnets are mounted in the magnet positioning cavities; a battery is installed at the middle end of an inner cavity of the bottom shell, a PCBA board is installed on the head portion of the inner cavity of the bottom shell, and the PCBA board is electrically connected with the battery and the heating piece. The portable hand warmer has the advantage of being convenient to use, and the problems that in the using process of an existing portable hand warmer with a magnetic function, the heat transfer efficiency is low, the using convenience of the hand warmer is reduced, a heat conduction element is difficult to disassemble, and the cleaning and maintaining difficulty is increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to a portable hand warmer with a magnetic suction function. Background Art

[0002] Portable hand warmers are small electronic products that are suitable for providing warmth to the hands in cold weather. They use electric heat conversion and are equipped with a charging function, which can be connected to a power source for charging through a charging port. This kind of hand warmer is small and portable, with a compact design, and can be easily held in the hand or put into a pocket or bag without adding to the burden of carrying. It is powered by a built-in battery and can quickly heat up by clicking the switch button, providing instant warmth to the user.

[0003] During use, the existing portable hand warmer with magnetic function has low efficiency in transferring heat energy, which reduces the convenience of using the hand warmer. In addition, it is difficult to disassemble the heat-conducting element, which increases the difficulty of cleaning and maintenance. Utility Model Content

[0004] The purpose of the utility model is to provide a portable hand warmer with a magnetic suction function, which has the advantage of being easy to use and solves the problem that the existing portable hand warmers with a magnetic function have low heat energy transfer efficiency during use, reducing the convenience of using the hand warmer, and it is difficult to disassemble the heat-conducting elements, which increases the difficulty of cleaning and maintenance.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a portable hand warmer with magnetic suction function, comprising two sets of surface shells and two sets of bottom shells, wherein the surface shells are installed on the bottom shells.

[0006] A heating sheet is installed on the surface shell, an arc-shaped heat-conducting hardware shell is installed on the heating sheet, and the arc-shaped heat-conducting hardware shell is connected to the surface shell;

[0007] The top and bottom of the inner wall of the bottom shell are both provided with magnet positioning cavities, and magnets are installed inside the magnet positioning cavities;

[0008] A battery is installed at the middle end of the inner cavity of the bottom shell, and a PCBA board is installed at the head of the inner cavity of the bottom shell. The PCBA board is electrically connected to the battery and the heating sheet.

[0009] As a preferred portable hand warmer with magnetic suction function of the utility model, the arc-shaped heat-conducting hardware shell is provided with a heating plate fixing foot, the surface shell is provided with a heating plate fixing hole, and the heating plate fixing foot is installed in the heating plate fixing hole to fix the arc-shaped heat-conducting hardware shell.

[0010] As a preferred portable hand warmer with magnetic suction function of the utility model, the inner wall of the surface shell is installed with a buckle, the inner wall of the bottom shell is opened with a clamping hole, and the buckle is installed inside the clamping hole to fix the surface shell.

[0011] As a preferred portable hand warmer with magnetic attraction function of the utility model, the surface shell is provided with a heating plate fixing groove for accommodating the heating plate and the arc-shaped heat-conducting hardware shell.

[0012] As a preferred portable hand warmer with a magnetic suction function of the utility model, lanyard holes are provided on both the left and right sides of the top of the surface shell.

[0013] As a preferred embodiment of the portable hand warmer with magnetic attraction function of the utility model, the inner cavity of the bottom shell is provided with a PCBA board fixing seat, and the PCBA board is installed on the PCBA board fixing seat.

[0014] As a preferred portable hand warmer with magnetic suction function of the utility model, a type-c charging interface is installed on the PCBA board, and the bottom of the type-c charging interface passes through the bottom of the surface shell. A switch and a light-emitting component are respectively installed on the PCBA board, and a button is installed on the switch, and the button and the light-emitting component pass through the surface shell.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model opens a heating plate fixing groove at the front end of the face shell and installs the heating plate inside the heating plate fixing groove, so that the heat can be concentrated and quickly transferred to the arc-shaped heat-conducting hardware shell, and then evenly distributed. Such a design helps to improve the conduction efficiency of heat energy, so that the user can feel the warmth faster when holding the hand warmer, and the heat distribution is more even, which improves the comfort of use. Placing the heating plate inside and isolating it by the arc-shaped heat-conducting hardware shell can effectively prevent the user from directly contacting the heating plate and reduce the risk of scalding. In addition to having good thermal conductivity, the arc-shaped heat-conducting hardware shell can also provide physical protection for the heating plate to prevent the heating plate from being damaged by bumps or squeezing during daily use, thereby extending the service life of the hand warmer. The coordinated use of the heating plate fixing feet and the heating plate fixing holes makes it easy to disassemble and install the arc-shaped heat-conducting hardware shell, which not only facilitates the user's daily cleaning and maintenance, but also means that when the heating plate needs to be replaced or repaired, it can be completed more simply and quickly.

[0017] 2. The utility model opens a magnet positioning cavity inside the bottom shell, which makes it easy to install the magnet, so that the hand warmer has a magnetic attraction function. The magnetic function allows the hand warmer to be easily adsorbed on the surface of any iron or iron-containing material, increasing the flexibility and convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main axonometric drawing of the utility model;

[0019] Figure 2 This is the main exploded view of the utility model;

[0020] Figure 3 This is the main axonometric view of the PCBA board of the utility model;

[0021] Figure 4 This is the rear axonometric view of the PCBA board of the utility model;

[0022] Figure 5 It is a side sectional view of the utility model.

[0023] In the figure: 1. Top shell; 2. Hanging rope hole; 3. Bottom shell; 4. Light-emitting part; 5. Button; 6. Arc-shaped heat-conducting hardware shell; 7. Type-C charging interface; 8. Magnet positioning cavity; 9. Magnet; 10. Battery; 11. Heating plate fixing groove; 12. Heating plate; 13. Heating plate fixing foot; 14. PCBA board; 15. Card hole; 16. PCBA board fixing seat; 17. Buckle; 18. Heating plate fixing hole; 19. Switch. DETAILED DESCRIPTION

[0024] See also Figure 1-Figure 5 A portable hand warmer with a magnetic suction function comprises two groups of surface shells 1 and two groups of bottom shells 3, wherein the surface shells 1 are mounted on the bottom shells 3.

[0025] Furthermore, a buckle 17 is installed on the inner wall of the surface shell 1 , and a clamping hole 15 is opened on the inner wall of the bottom shell 3 . The buckle 17 is installed inside the clamping hole 15 to fix the surface shell 1 .

[0026] The cooperation of the buckle 17 and the clamping hole 15 can facilitate the installation and disassembly of the front shell 1 and the maintenance of the parts inside the front shell 1 and the bottom shell 3 by the staff.

[0027] Furthermore, rope holes 2 are provided on both left and right sides of the top of the face shell 1 .

[0028] By providing the hanging rope hole 2, it is convenient to install the rope, so that the user can carry it conveniently.

[0029] Furthermore, a heating sheet 12 is installed on the surface shell 1 , and an arc-shaped heat-conducting hardware shell 6 is installed on the heating sheet 12 , and the arc-shaped heat-conducting hardware shell 6 is connected to the surface shell 1 .

[0030] Furthermore, a heating plate fixing foot 13 is provided on the arc-shaped heat-conducting hardware shell 6 , a heating plate fixing hole 18 is opened on the surface shell 1 , and the heating plate fixing foot 13 is installed in the heating plate fixing hole 18 to fix the arc-shaped heat-conducting hardware shell 6 .

[0031] Furthermore, a heating plate fixing groove 11 for accommodating the heating plate 12 and the arc-shaped heat-conducting hardware shell 6 is provided on the surface shell 1 .

[0032] By opening a heating plate fixing groove 11 at the front end of the face shell 1 and installing a heating plate 12 inside the heating plate fixing groove 11, heat can be concentrated and quickly transferred to the arc-shaped heat-conducting hardware shell 6 and then evenly distributed. Such a design helps to improve the efficiency of heat conduction, so that the user can feel the warmth faster when holding the hand warmer, and the heat distribution is more even, which improves the comfort of use. Placing the heating plate 12 inside and isolating it through the arc-shaped heat-conducting hardware shell 6 can effectively prevent the user from directly contacting the heating plate 12 and reduce the risk of scalding. In addition to having good thermal conductivity, the arc-shaped heat-conducting hardware shell 6 can also provide physical protection for the heating plate 12 to prevent the heating plate 12 from being damaged by bumps or squeezing during daily use, thereby extending the service life of the hand warmer. The coordinated use of the heating plate fixing feet 13 and the heating plate fixing holes 18 can make it easy to disassemble and install the arc-shaped heat-conducting hardware shell 6, which not only facilitates the user's daily cleaning and maintenance, but also means that when the heating plate 12 needs to be replaced or repaired, it can be completed more simply and quickly.

[0033] Furthermore, magnet positioning cavities 8 are provided at the top and bottom of the inner wall of the bottom shell 3 , and magnets 9 are installed inside the magnet positioning cavities 8 .

[0034] By opening a magnet positioning cavity 8 inside the bottom shell 3, the magnet 9 can be easily installed, so that the hand warmer has a magnetic attraction function. The magnetic function allows the hand warmer to be easily adsorbed on the surface of any iron or iron-containing material, increasing the flexibility and convenience of use.

[0035] Furthermore, a battery 10 is installed at the middle end of the inner cavity of the bottom shell 3 , and a PCBA board 14 is installed at the head of the inner cavity of the bottom shell 3 . The PCBA board 14 is electrically connected to the battery 10 and the heating sheet 12 .

[0036] Furthermore, a PCBA board fixing seat 16 is provided in the inner cavity of the bottom shell 3 , and the PCBA board 14 is installed on the PCBA board fixing seat 16 .

[0037] The PCBA board fixing seat 16 supports and fixes the PCBA board 14 to prevent the PCBA board 14 from shaking during operation.

[0038] Furthermore, a type-c charging interface 7 is installed on the PCBA board 14, and the bottom of the type-c charging interface 7 passes through the bottom of the face shell 1. A switch 19 and a light-emitting component 4 are respectively installed on the PCBA board 14, and a button 5 is installed on the switch 19. The button 5 and the light-emitting component 4 pass through the face shell 1.

[0039] The battery 10 supplies power to the electrical equipment. When the battery 10 needs to be charged, the type-c charging interface 7 is connected to an external charger to charge the battery 10 through the PCBA board 14.

[0040] The user can press the switch 19 through the button 5, and the switch 19 can transmit a control signal to the PCBA board 14. The PCBA board 14 controls the heating plate 12 according to the signal. When the heating plate 12 is working, the light-emitting element 4 emits light to remind the user.

[0041] Furthermore, a thermistor is installed on the heating plate 12 to detect the working temperature of the heating plate 12 to prevent it from overheating.

[0042] When the heating sheet 12 starts to heat, the resistance of the thermistor decreases as the temperature rises, which causes the voltage output by the voltage divider circuit to change. The operational amplifier monitors this voltage change and compares it with a preset reference voltage. When the temperature detected by the thermistor reaches the set value, the output of the operational amplifier changes, thereby controlling the power transistor to reduce or cut off the current flowing to the heating sheet 12, thereby slowing down or stopping the heating process. As the temperature drops, the resistance of the thermistor increases, and the circuit starts the heating process again, forming a closed-loop feedback control to keep the temperature within the target range.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable hand warmer with a magnetic suction function, comprising two sets of surface shells (1) and two sets of bottom shells (3), wherein the surface shells (1) are mounted on the bottom shells (3), and characterized in that: A heating sheet (12) is mounted on the surface shell (1), an arc-shaped heat-conducting metal shell (6) is mounted on the heating sheet (12), and the arc-shaped heat-conducting metal shell (6) is connected to the surface shell (1); The inner wall top and bottom of the bottom shell (3) are both provided with magnet positioning cavities (8), and magnets (9) are installed inside the magnet positioning cavities (8); A battery (10) is installed at the middle end of the inner cavity of the bottom shell (3), a PCBA board (14) is installed at the head of the inner cavity of the bottom shell (3), and the PCBA board (14) is electrically connected to the battery (10) and the heating sheet (12).

2. A portable hand warmer with magnetic suction function according to claim 1, characterized in that: The arc-shaped heat-conducting hardware shell (6) is provided with a heating plate fixing foot (13), the surface shell (1) is provided with a heating plate fixing hole (18), and the heating plate fixing foot (13) is installed in the heating plate fixing hole (18) to fix the arc-shaped heat-conducting hardware shell (6).

3. The portable hand warmer with magnetic attraction function according to claim 1, characterized in that: The inner wall of the face shell (1) is provided with a buckle (17), the inner wall of the bottom shell (3) is provided with a buckle hole (15), and the buckle (17) is installed inside the buckle hole (15) to fix the face shell (1).

4. The portable hand warmer with magnetic attraction function according to claim 1, characterized in that: The surface shell (1) is provided with a heating plate fixing groove (11) for accommodating the heating plate (12) and the arc-shaped heat-conducting hardware shell (6).

5. The portable hand warmer with magnetic attraction function according to claim 1, characterized in that: The left and right sides of the top of the face shell (1) are both provided with hanging rope holes (2).

6. The portable hand warmer with magnetic attraction function according to claim 1, characterized in that: The inner cavity of the bottom shell (3) is provided with a PCBA board fixing seat (16), and the PCBA board (14) is mounted on the PCBA board fixing seat (16).

7. The portable hand warmer with magnetic attraction function according to claim 1, characterized in that: The PCBA board (14) is provided with a type-c charging interface (7), the bottom of which passes through the bottom of the face shell (1), the PCBA board (14) is provided with a switch (19) and a light-emitting component (4), respectively, the switch (19) is provided with a button (5), and the button (5) and the light-emitting component (4) pass through the face shell (1).

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