Portable hand warmer with magnetic attraction function

Abstract

To provide a portable warmer with a magnetic attraction function, which has the advantages of being easy to use, increasing the efficiency of thermal energy conduction, improving comfort, and allowing easy removal of a thermal conduction element, and allows for easy and quick cleaning and maintenance. [Solution] A portable heater with magnetic attraction function includes two sets of face shells 1 and two sets of bottom shells 3, the face shells are attached to the bottom shells, a heating sheet 12 is attached to the face shells, an arc-shaped heat-conducting metal shell 6 is attached to the heating sheet, and the arc-shaped heat-conducting metal shell is connected to the face shells, a magnet positioning cavity 8 is opened at both the top and bottom of the inner wall of the bottom shell, a magnet 9 is attached inside it, a battery 10 is attached to the center of the inner cavity of the bottom shell, and a PCBA board 14 is attached to the top of the inner cavity, which is electrically connected to the battery and the heating sheet.

Description

[Technical field]

[0001] This utility model relates to the technical field of electronic products, specifically to a portable heater with magnetic attraction function. [Background technology]

[0002] A portable hand warmer is a small electronic product suitable for warming hands in cold seasons, which utilizes electrothermal conversion, has a charging function, and can be charged by connecting it to a power source via a charging port. Such hand warmers are small and portable, and can be easily held in the hand or put in a pocket or bag, with a compact design that is not burdensome to carry. They are powered by a built-in battery, and can generate heat quickly by simply clicking a switch button, providing immediate warmth to the user.

[0003] During use of existing portable heaters with magnetic functions, the thermal energy transfer efficiency is low, which reduces the convenience of using the heater, and the heat conductive element is difficult to remove, which increases the difficulty of cleaning and maintenance. Summary of the Invention

[0004] The objective of this utility model is to provide a portable warmer with a magnetic attraction function, which has the advantage of being easy to use, and solves the problems that the thermal energy transfer efficiency is low during use of existing portable warmers with magnetic functions, which reduces the convenience of using the warmer, and the thermal conduction element is difficult to remove, making cleaning and maintenance more difficult.

[0005] In order to achieve the above object, the present invention provides the following technical solution: A portable heater with magnetic attraction function, comprising: two sets of face shells and two sets of bottom shells, the face shells being attached to the bottom shells; A heat generating sheet is attached to the face shell, a circular arc-shaped heat conductive metal shell is attached to the heat generating sheet, and the circular arc-shaped heat conductive metal shell is connected to the face shell; A magnet positioning cavity is opened at both the top and bottom of the inner wall of the bottom shell, and a magnet is attached inside the magnet positioning cavity; A battery is mounted in the center of the inner cavity of the bottom shell, and a PCBA board is mounted on the top of the inner cavity of the bottom shell, and the PCBA board is electrically connected to the battery and the heat generating sheet.

[0006] The advantage of the magnetic attraction function portable heater of this utility model is that the arc-shaped heat conductive metal shell is provided with heating sheet fixing legs, the face shell is provided with heating sheet fixing holes, and the heating sheet fixing legs are installed in the heating sheet fixing holes to fix the arc-shaped heat conductive metal shell.

[0007] The advantage of the magnetic attraction function portable warmer of this utility model is that a buckle is attached to the inner wall of the face shell, a buckle hole is opened in the inner wall of the bottom shell, and the buckle is attached inside the buckle hole to fix the face shell.

[0008] The advantage of the magnetic attraction function portable warmer of the present invention is that the face shell has a heating sheet fixing groove for accommodating the heating sheet and the arc-shaped heat-conducting metal shell.

[0009] An advantage of the magnetic attraction function-equipped portable warmer of this utility model is that a strap hole is provided on either the left or right side of the upper part of the face shell.

[0010] The advantage of the magnetic attraction function portable heater of the present invention is that the inner cavity of the bottom shell is provided with a PCBA board fixing seat, and the PCBA board is attached to the PCBA board fixing seat; The advantage of the magnetic attraction function portable heater of this utility model is that a Type-C charging port is installed on the PCBA board, the bottom of the Type-C charging port penetrates to the bottom of the face shell, a switch and a light-emitting member are respectively installed on the PCBA board, a button is installed on the switch, and the button and the light-emitting member penetrate to the face shell.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] 1. In this utility model, a groove for fixing the heating sheet is opened at the front end of the face shell, and the heating sheet is attached inside the groove for fixing the heating sheet, so that the heat can be concentrated and quickly transferred to the arc-shaped heat-conducting metal shell, and then evenly distributed. This design helps to improve the efficiency of thermal energy transfer, so that the user can feel warmth more quickly when holding the warmer, and the heat is more evenly distributed, improving the comfort of use. By placing the heating sheet inside and isolating it with the arc-shaped heat-conducting metal shell, the user can effectively avoid direct contact with the heating sheet and reduce the risk of burns. The arc-shaped heat-conducting metal shell has good thermal conductivity performance, and also provides physical protection for the heating sheet, which can prevent the heating sheet from being damaged by collision or pressure during daily use and extend the service life of the warmer. The heating sheet fixing leg cooperates with the heating sheet fixing hole to facilitate the installation and removal of the arc-shaped heat-conducting metal shell, which not only makes daily cleaning and maintenance more convenient for the user, but also means that when the heating sheet needs to be replaced or repaired, it can be done more easily and quickly.

[0013] 2. In this utility model, a magnet positioning cavity is opened inside the bottom shell, which can facilitate attachment to a magnet, and the heater can have a magnetic attraction function. With the magnetic function, the heater can be easily attached to the surface of any ferrous or ferrous material, thereby improving the flexibility and convenience of use. [Brief description of the drawings]

[0014] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a front perspective view of the PCBA board of the present invention. [Figure 4] FIG. 2 is a rear perspective view of the PCBA board of the present invention. [Diagram 5] FIG. 1 is a side cross-sectional view of the present utility model. In the drawing, 1 is a face shell, 2 is a strap hole, 3 is a bottom shell, 4 is a light emitting member, 5 is a button, 6 is a circular arc-shaped heat conductive metal shell, 7 is a type C charging port, 8 is a magnet positioning cavity, 9 is a magnet, 10 is a battery, 11 is a heating sheet fixing groove, 12 is a heating sheet, 13 is a heating sheet fixing leg, 14 is a PCBA board, 15 is a buckle hole, 16 is a PCBA board fixing seat, 17 is a buckle, 18 is a heating sheet fixing hole, 19 is a switch. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] 1 to 5, the portable warmer with a magnetic attraction function includes two face shells 1 and two bottom shells 3, and the face shells 1 are attached to the bottom shells 3. In the portable warmer with a magnetic attraction function, as shown in FIG.

[0016] Furthermore, a buckle 17 is attached to the inner wall of the face shell 1, a buckle hole 15 is formed in the inner wall of the bottom shell 3, and the buckle 17 is attached inside the buckle hole 15 to fix the face shell 1.

[0017] The buckle 17 cooperates with the buckle hole 15 to facilitate attachment and detachment to the face shell 1, making it easier for staff to maintain the internal components of the face shell 1 and the bottom shell 3.

[0018] Furthermore, strap holes 2 are provided on both the left and right sides of the upper portion of the face shell 1.

[0019] The provision of the strap hole 2 makes it easy to attach a strap, making it easier for the user to carry it.

[0020] Furthermore, a heat generating sheet 12 is attached to the face shell 1 , and a circular arc-shaped heat conductive metal shell 6 is attached to the heat generating sheet 12 , and the circular arc-shaped heat conductive metal shell 6 is connected to the face shell 1 .

[0021] Furthermore, the arc-shaped heat-conducting metal shell 6 is provided with a heat-generating sheet fixing leg 13, and the face shell 1 is provided with a heat-generating sheet fixing hole 18, and the heat-generating sheet fixing leg 13 is attached into the heat-generating sheet fixing hole 18 to fix the arc-shaped heat-conducting metal shell 6.

[0022] Furthermore, the face shell 1 is provided with a heat generating sheet fixing groove 11 for accommodating the heat generating sheet 12 and the arc-shaped heat conductive metal shell 6 .

[0023] A heating sheet fixing groove 11 is opened at the front end of the face shell 1, and the heating sheet 12 is attached inside the heating sheet fixing groove 11, so that the heat can be concentrated and quickly transferred to the arc-shaped heat-conducting metal shell 6, and then evenly distributed. This design helps to improve the thermal energy transfer efficiency, so that the user can feel warmth faster when holding the warmer, and the heat is more evenly distributed, improving the comfort of use. By placing the heating sheet 12 inside and isolating it with the arc-shaped heat-conducting metal shell 6, the user can effectively avoid touching the heating sheet 12 directly and reduce the risk of burns. The arc-shaped heat-conducting metal shell 6 has good thermal conductivity performance, and also provides physical protection for the heating sheet 12, which can prevent the heating sheet 12 from being damaged by collision or pressure during daily use, and can extend the service life of the warmer. The heating sheet fixing legs 13 cooperate with the heating sheet fixing holes 18 to facilitate the attachment and detachment of the arc-shaped heat-conducting metal shell 6, which not only makes daily cleaning and maintenance convenient for users, but also means that when the heating sheet 12 needs replacing or repairing, it can be done more easily and quickly.

[0024] Furthermore, magnet positioning cavities 8 are opened on both the top and bottom of the inner wall of the bottom shell 3, and magnets 9 are attached inside the magnet positioning cavities 8.

[0025] A magnet positioning cavity 8 is provided inside the bottom shell 3 to facilitate attachment to a magnet 9, and the heater has a magnetic attraction function that allows the heater to be easily attached to any surface of ferrous or iron-containing materials, improving flexibility and convenience of use.

[0026] Furthermore, a battery 10 is attached to the center of the internal cavity of the bottom shell 3 , and a PCBA board 14 is attached to the top of the internal cavity of the bottom shell 3 , and the PCBA board 14 is electrically connected to the battery 10 and the heat generating sheet 12 .

[0027] Furthermore, a PCBA board fixing seat 16 is provided in the internal cavity of the bottom shell 3 , and the PCBA board 14 is attached to the PCBA board fixing seat 16 .

[0028] The PCBA board fixing seat 16 supports and fixes the PCBA board 14, preventing the PCBA board 14 from rattling during operation.

[0029] Furthermore, a Type-C charging port 7 is attached to the PCBA board 14, and the bottom of the Type-C charging port 7 penetrates to the bottom of the face shell 1. A switch 19 and a light-emitting member 4 are attached to the PCBA board 14, and a button 5 is attached to the switch 19, and the button 5 and the light-emitting member 4 penetrate to the face shell 1.

[0030] The battery 10 provides power to the electrical device, and when the battery 10 needs to be charged, the Type-C charging port 7 is connected to an external charger to charge the battery 10 via the PCBA board 14.

[0031] A user can press the switch 19 using the button 5, and the switch 19 can send a control signal to the PCBA board 14, and the PCBA board 14 controls the heating sheet 12 based on the signal, and when the heating sheet 12 is activated, the light-emitting member 4 emits light to alert the user.

[0032] Furthermore, a thermistor is attached to the heating sheet 12 to detect the operating temperature of the heating sheet 12 and prevent overheating.

[0033] When the heating sheet 12 begins to heat up, as the temperature rises, the resistance of the thermistor decreases, which causes a change in the voltage output of the voltage divider circuit. The operational amplifier monitors this voltage change and compares it with a preset reference voltage. When the temperature detected by the thermistor reaches a set value, the output of the operational amplifier changes and controls the power transistor to reduce or cut off the current flowing to the heating sheet 12, thereby easing up or stopping the heating process. As the temperature drops, the resistance of the thermistor increases, and the circuit begins the heating process again, forming a closed-loop feedback control and keeping the temperature within the target range.

[0034] The above is only a preferred embodiment of the present utility model, and does not limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A portable heater with a magnetic attraction function, comprising two sets of face shells (1) and two sets of bottom shells (3), the face shells (1) being attached to the bottom shells (3), A heat generating sheet (12) is attached to the face shell (1), a circular arc-shaped heat conductive metal shell (6) is attached to the heat generating sheet (12), and the circular arc-shaped heat conductive metal shell (6) is connected to the face shell (1); A magnet positioning cavity (8) is opened on both the top and bottom of the inner wall of the bottom shell (3), and a magnet (9) is attached inside the magnet positioning cavity (8); A portable heater with a magnetic attraction function, characterized in that a battery (10) is attached to the center of the internal cavity of the bottom shell (3), a PCBA board (14) is attached to the top of the internal cavity of the bottom shell (3), and the PCBA board (14) is electrically connected to the battery (10) and the heating sheet (12).

2. The portable heater with magnetic attraction function according to claim 1, characterized in that the arc-shaped heat-conducting metal shell (6) is provided with heating sheet fixing legs (13), the face shell (1) is provided with heating sheet fixing holes (18), and the heating sheet fixing legs (13) are attached into the heating sheet fixing holes (18) to fix the arc-shaped heat-conducting metal shell (6).

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

4. The portable heater with magnetic attraction function according to claim 1, characterized in that the face shell (1) is provided with a heating sheet fixing groove (11) for accommodating the heating sheet (12) and the arc-shaped heat-conducting metal shell (6).

5. 2. The portable heater with magnetic attraction function according to claim 1, wherein a strap hole (2) is provided on either the left or right side of the upper part of the face shell (1).

6. 2. The portable heater with magnetic attraction function according to claim 1, wherein the inner cavity of the bottom shell (3) is provided with a PCBA board fixing seat (16), and the PCBA board (14) is attached to the PCBA board fixing seat (16).

7. The portable heater with magnetic attraction function of claim 1, characterized in that a type-C charging port (7) is attached to the PCBA board (14), the bottom of the type-C charging port (7) penetrates to the bottom of the face shell (1), a switch (19) and a light-emitting member (4) are attached to the PCBA board (14), a button (5) is attached to the switch (19), and the button (5) and the light-emitting member (4) penetrate to the face shell (1).

Images