Automatic induction heating hand warmer

Abstract

The utility model discloses a kind of hand warmer of automatic response heating, including two groups of face shell and two groups of bottom shell, the face shell is installed on bottom shell, heating sheet is installed on the face shell, heat-conducting hardware shell is installed on the heating sheet, the heat-conducting hardware shell is connected with face shell;Magnet positioning cavity is set in the top and bottom of bottom shell inner wall, magnet is installed in the magnet positioning cavity inside;Battery is installed in the middle end of bottom shell inner cavity, PCBA board is installed in the head of bottom shell inner cavity, the PCBA board and battery and heating sheet are electrically connected.The utility model has the advantages of being easy to use, solves the portable hand warmer of the current magnetic attraction function in the process of using, not convenient for the hand of user to induct, to realize the function of automatic heating, reduces the problem of intelligence in the process of using hand warmer.

Description

Technical Field

[0001] This utility model relates to the field of electronic product technology, specifically to an automatic induction heating hand warmer. Background Technology

[0002] Portable hand warmers are a type of small electronic product designed to provide warmth to hands in cold weather. They utilize electrothermal conversion and are equipped with a charging function, allowing them to be charged via a power source. These hand warmers are small and portable, with a compact design that allows them to be easily held in the hand or placed in a pocket or bag without adding to the burden of carrying them. Powered by a built-in battery, they quickly generate heat by pressing a switch button, providing instant warmth to the user.

[0003] Existing portable hand warmers with magnetic attraction are not convenient to sense the user's hand during use to achieve automatic heating, which reduces the intelligence of the hand warmer during use. Utility Model Content

[0004] The purpose of this invention is to provide an automatic induction heating hand warmer, which is easy to use and solves the problem that existing portable hand warmers with magnetic functions are not convenient to sense the user's hands to achieve automatic heating, thus reducing the intelligence of the hand warmer during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic induction heating hand warmer, comprising two sets of front shells and two sets of bottom shells, wherein the front shells are mounted on the bottom shells.

[0006] A heating element is mounted on the faceplate, and a heat-conducting metal shell is mounted on the heating element. The heat-conducting metal shell is connected to the faceplate.

[0007] The bottom shell has magnetic positioning cavities at the top and bottom, and magnets are installed inside the magnetic positioning cavities.

[0008] A battery is installed in the middle 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 element.

[0009] The bottom of the faceplate is provided with a sensing area, and a touch switch that works in conjunction with the sensing area is installed inside the faceplate.

[0010] As a preferred embodiment of the present invention, the heat-conducting metal shell is provided with heating element fixing feet, and the surface shell is provided with heating element fixing holes. The heating element fixing feet are installed in the heating element fixing holes to fix the heat-conducting metal shell.

[0011] As a preferred embodiment of the present invention, an automatic induction heating hand warmer has a buckle installed on the inner wall of the face shell and a locking hole opened on the inner wall of the bottom shell. The buckle is installed inside the locking hole to fix the face shell.

[0012] As a preferred embodiment of the present invention, an automatic induction heating hand warmer has a heating element fixing groove on the outer shell to accommodate the heating element and the heat-conducting metal shell.

[0013] As a preferred embodiment of the automatic induction heating hand warmer of this utility model, the top of the face shell is provided with hanging rope holes on both the left and right sides.

[0014] As a preferred embodiment of the present invention, an automatic induction heating hand warmer is provided with a PCBA board fixing seat in the inner cavity of the bottom shell, and the PCBA board is installed on the PCBA board fixing seat.

[0015] As a preferred embodiment of the present invention, an automatic induction heating hand warmer is provided with a Type-C charging interface installed on the PCBA board, the bottom of which extends to the bottom of the front cover. A push switch and a decorative light are also installed on the PCBA board. The push switch has a button installed on it, and the button and the decorative light extend to the surface of the front cover.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model features a heating element fixing groove at the front end of the outer shell, into which a heating element is installed. This allows heat to be concentrated and quickly transferred to the heat-conducting metal shell, where it is then evenly distributed. This design improves heat transfer efficiency, allowing users to feel warmth more quickly when holding the hand warmer. The more even heat distribution enhances comfort. Placing the heating element inside and isolating it with the heat-conducting metal shell effectively prevents direct contact with the heating element, reducing the risk of burns. In addition to its excellent thermal conductivity, the heat-conducting metal shell provides physical protection for the heating element, preventing damage from bumps or pressure during daily use and extending the hand warmer's lifespan. The combination of the heating element fixing feet and holes facilitates easy disassembly and installation of the heat-conducting metal shell. This not only makes daily cleaning and maintenance easier but also means that replacement or repair of the heating element can be completed more quickly and easily.

[0018] 2. This utility model, by opening a magnet positioning cavity inside the bottom shell, facilitates the installation of magnets, giving the hand warmer a magnetic attraction function. The magnetic attraction function allows the hand warmer to easily adhere to any ferrous or iron-containing material surface, increasing the flexibility and convenience of use. Attached Figure Description

[0019] Figure 1This is the main view axonometric drawing of this utility model;

[0020] Figure 2 This is an exploded view of the main front view of this utility model;

[0021] Figure 3 This is the main isometric view of the PCBA board of this utility model;

[0022] Figure 4 This is a rear axonometric view of the PCBA board of this utility model;

[0023] Figure 5 This is a side sectional view of the present invention;

[0024] Figure 6 This is a partial sectional view of the present invention.

[0025] In the diagram: 1. Front cover; 2. Lanyard hole; 3. Bottom cover; 4. Decorative light; 5. Button; 6. Heat-conducting metal shell; 7. Type-C charging port; 8. Magnet positioning cavity; 9. Magnet; 10. Battery; 11. Heating element fixing slot; 12. Heating element; 13. Heating element fixing foot; 14. PCBA board; 15. Clip hole; 16. PCBA board fixing base; 17. Buckle; 18. Heating element fixing hole; 19. Press switch; 20. Sensing area; 21. Touch switch. Detailed Implementation

[0026] Please see Figures 1-6 An automatic induction heating hand warmer includes two sets of front shells 1 and two sets of bottom shells 3, with the front shells 1 mounted on the bottom shells 3.

[0027] Furthermore, a buckle 17 is installed on the inner wall of the face shell 1, and a locking hole 15 is opened on the inner wall of the bottom shell 3. The buckle 17 is installed inside the locking hole 15 to fix the face shell 1.

[0028] The use of clips 17 and holes 15 facilitates the installation and disassembly of the face shell 1, and makes it easier for staff to maintain the internal parts of the face shell 1 and the bottom shell 3.

[0029] Furthermore, hanging holes 2 are provided on both the left and right sides of the top of the faceplate 1.

[0030] By providing a lanyard hole 2, it is easy to install a rope, making it convenient for users to carry.

[0031] Furthermore, a heating element 12 is installed on the faceplate 1, and a heat-conducting metal shell 6 is installed on the heating element 12, which is connected to the faceplate 1.

[0032] Furthermore, the heat-conducting metal shell 6 is provided with heating element fixing feet 13, and the face shell 1 is provided with heating element fixing holes 18. The heating element fixing feet 13 are installed in the heating element fixing holes 18 to fix the heat-conducting metal shell 6.

[0033] Furthermore, the faceplate 1 has a heating element fixing groove 11 for accommodating the heating element 12 and the heat-conducting metal shell 6.

[0034] By opening a heating element fixing groove 11 at the front end of the faceplate 1 and installing the heating element 12 inside the heating element fixing groove 11, heat can be concentrated and quickly transferred to the heat-conducting metal shell 6, and then evenly distributed. This design helps to improve the heat conduction efficiency, allowing users to feel warmth faster when holding the hand warmer, and the heat distribution is more even, improving the comfort of use. Placing the heating element 12 inside and is isolated by the heat-conducting metal shell 6 can effectively prevent users from directly contacting the heating element 12, reducing the risk of burns. In addition to having good thermal conductivity, the heat-conducting metal shell 6 can also provide physical protection for the heating element 12, preventing damage to the heating element 12 from bumps or squeezes during daily use, and extending the service life of the hand warmer. Through the cooperation of the heating element fixing feet 13 and the heating element fixing holes 18, the heat-conducting metal shell 6 can be easily disassembled and installed. This not only facilitates the user's daily cleaning and maintenance, but also means that when the heating element 12 needs to be replaced or repaired, it can be done more simply and quickly.

[0035] Furthermore, the top and bottom of the inner wall of the bottom shell 3 are provided with magnet positioning cavities 8, and magnets 9 are installed inside the magnet positioning cavities 8.

[0036] By creating a magnet positioning cavity 8 inside the bottom shell 3, it is easy to install the magnet 9, giving the hand warmer a magnetic attraction function. The magnetic attraction function allows the hand warmer to easily adhere to any ferrous or iron-containing material surface, increasing the flexibility and convenience of use.

[0037] Furthermore, a battery 10 is installed in the middle 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 element 12.

[0038] Furthermore, 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.

[0039] The PCBA board mounting bracket 16 supports and secures the PCBA board 14, preventing the PCBA board 14 from shaking during operation.

[0040] Furthermore, a type-c charging port 7 is installed on the PCBA board 14, with the bottom of the type-c charging port 7 extending through to the bottom of the front cover 1. A push switch 19 and a decorative light 4 are installed on the PCBA board 14, and a button 5 is installed on the push switch 19. The button 5 and the decorative light 4 extend through to the front cover 1.

[0041] Battery 10 provides power to the device. When battery 10 needs to be charged, the type-c charging port 7 is connected to an external charger, and the battery 10 is charged through PCBA board 14.

[0042] The user can press the push switch 19 by pressing button 5. The push switch 19 can transmit control signals to the PCBA board 14. The PCBA board 14 controls the heating element 12 according to the signal. When the heating element 12 is working, the decorative light 4 lights up to remind the user.

[0043] Furthermore, a thermistor is installed on the heating element 12 to detect the operating temperature of the heating element 12 and prevent it from overheating.

[0044] When the heating element 12 starts heating, the resistance of the thermistor decreases as the temperature rises. This 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 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 element 12, thus slowing down or stopping the heating process. As the temperature drops, the resistance of the thermistor increases, and the circuit restarts the heating process, forming a closed-loop feedback control that keeps the temperature within the target range.

[0045] Furthermore, a sensing area 20 is provided at the bottom of the surface of the faceplate 1, and a sensor touch switch 21 that works in conjunction with the sensing area 20 is installed inside the faceplate 1.

[0046] When automatic induction heating is required, the user's hand is placed on the sensing area 20. At this time, the parameter value of the induction touch switch 21 changes, and the induction touch switch 21 transmits an electrical signal to the PCBA board 14. After receiving the heating signal, the PCBA board 14 controls the heating element 12 to heat up. The heat emitted by the heating element 12 is conducted to the user's hand through the heat-conducting metal shell 6. Moreover, the heating level can be switched and the heating temperature adjusted by shortly pressing the switch 19.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic induction heating hand warmer, comprising two sets of front shells (1) and two sets of bottom shells (3), wherein the front shells (1) are mounted on the bottom shells (3), characterized in that: A heating element (12) is installed on the face shell (1), and a heat-conducting metal shell (6) is installed on the heating element (12). The heat-conducting metal shell (6) is connected to the face shell (1). The bottom shell (3) has magnet positioning cavities (8) at the top and bottom of its inner wall, and magnets (9) are installed inside the magnet positioning cavities (8). A battery (10) is installed in the middle 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 element (12). The bottom of the surface of the faceplate (1) is provided with a sensing area (20), and a sensor touch switch (21) that works in conjunction with the sensing area (20) is installed inside the faceplate (1).

2. The automatic induction heating hand warmer according to claim 1, characterized in that: The heat-conducting metal shell (6) is provided with heating element fixing feet (13), and the face shell (1) is provided with heating element fixing holes (18). The heating element fixing feet (13) are installed in the heating element fixing holes (18) to fix the heat-conducting metal shell (6).

3. The automatic induction heating hand warmer according to claim 1, characterized in that: The inner wall of the face shell (1) is fitted with a buckle (17), and the inner wall of the bottom shell (3) is provided with a locking hole (15). The buckle (17) is installed inside the locking hole (15) to fix the face shell (1).

4. The automatic induction heating hand warmer according to claim 1, characterized in that: The faceplate (1) is provided with a heating element fixing groove (11) for accommodating the heating element (12) and the heat-conducting hardware shell (6).

5. The automatic induction heating hand warmer according to claim 1, characterized in that: The top of the faceplate (1) has hanging holes (2) on both the left and right sides.

6. The hand warmer with automatic induction heating according to claim 1, characterized in that: The bottom shell (3) has a PCBA board fixing seat (16) inside, and the PCBA board (14) is installed on the PCBA board fixing seat (16).

7. The automatic induction heating hand warmer according to claim 1, characterized in that: A type-c charging interface (7) is installed on the PCBA board (14). The bottom of the type-c charging interface (7) extends through to the bottom of the face shell (1). A push switch (19) and a decorative light (4) are installed on the PCBA board (14). A button (5) is installed on the push switch (19). The button (5) and the decorative light (4) extend through to the surface of the face shell (1).

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