Circuit board mounting structure and blower

Abstract

The utility model discloses a circuit board mounting structure, which relates to the technical field of hair driers and at least comprises a shell and a PCB (printed circuit board) accommodated in the shell, a first component group is mounted on one surface of the PCB facing the shell, a second component group is mounted on the other surface of the PCB, and the first component group and the second component group are mounted in the shell. According to the circuit board installation structure, the first component set and the second component set are installed on the two sides of the PCB respectively, the compact layout of the circuit board is achieved, the space is saved, the design requirement for miniaturization of the blower is met, the structure is simple, the cost is low, and the application range is wide. And meanwhile, the function integrity is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, and in particular to a circuit board mounting structure. Background Technology

[0002] In a hair dryer, the circuit board is the core control unit, responsible for functions such as power management, motor control, heating adjustment, and temperature protection. It converts the input AC power into a stable power supply, drives the motor to run and controls the airflow, while adjusting the power of the heating wire to achieve temperature control. The circuit board also has a built-in overheat protection mechanism to prevent equipment damage or safety hazards. In addition, it receives user commands and provides feedback on the status through indicator lights or a display screen. The circuit board ensures that the hair dryer operates efficiently and safely.

[0003] Traditional hair dryers have capacitor and inductor modules located on opposite sides of the circuit board. Due to the thickness of the inductor module, the circuit board and the handle wrapped around it are also thick, making them inconvenient to carry. Utility Model Content

[0004] The purpose of this utility model is to provide a circuit board mounting structure and a hair dryer to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:

[0006] A circuit board mounting structure includes at least a housing and a PCB board housed within the housing:

[0007] The PCB board is positioned on the lower side of the lower shell away from the upper shell. A first component group is mounted on the side of the PCB board facing the shell, and a second component group is mounted on the other side of the PCB board. The height of each component in the first component group when in use is greater than the height of each component in the second component group when in use.

[0008] As a further embodiment of this utility model, the housing is provided with a ventilation channel, and the first component group is accommodated in the ventilation channel.

[0009] As a further embodiment of this invention, the PCB board is attached to one side of the housing.

[0010] As a further embodiment of this utility model, the housing includes a lower housing and an upper housing. One end of the upper housing has a main air intake unit, and the end of the lower housing away from the main air intake unit has an air outlet. The lower housing and the upper housing enclose each other to form a ventilation channel. One end of the ventilation channel is connected to the main air intake unit, and the other end is connected to the air outlet located on the lower housing.

[0011] As a further embodiment of this utility model, a preset through slot is provided in the area of ​​the lower shell corresponding to the main air intake unit, and a first component group is installed in the area of ​​the PCB board exposed in the preset through slot.

[0012] As a further embodiment of this utility model, the lower shell has a receiving position on its lower side away from the upper shell that is connected to a preset through slot, and the PCB board is adapted to be installed in the receiving position.

[0013] As a further embodiment of this utility model, the lower shell is provided with auxiliary air intake units on both sides of the preset through slot.

[0014] As a further embodiment of this utility model, a wiring area is formed between the PCB board and the two side walls of the receiving position, and at least one wire-passing groove is provided on the lower shell corresponding to the wiring area.

[0015] As a further embodiment of this utility model, multiple screw holes are provided on both sides of the receiving position, and a reinforcing plate is connected between adjacent screw holes. A positioning plate is provided on the side of the screw holes opposite to the reinforcing plate. The PCB board is adapted to be installed between each positioning plate, and a notch is provided on the edge of the PCB board at the position directly opposite the screw holes.

[0016] In addition, this utility model also provides a hair dryer, including the aforementioned circuit board mounting structure.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model discloses a circuit board mounting structure and a hair dryer. The first component group and the second component group are respectively mounted on both sides of the PCB board, which realizes a compact layout of the circuit board, saves space, meets the design requirements of miniaturization of the hair dryer, and at the same time ensures the integrity of the function. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the circuit board mounting structure and the overall assembly structure of the hair dryer according to the present invention.

[0021] Figure 2 This utility model discloses a circuit board mounting structure and a blower structure disassembly. Figure 1 ;

[0022] Figure 3 This utility model discloses a circuit board mounting structure and a blower structure disassembly. Figure 2 ;

[0023] Figure 4This utility model relates to a circuit board mounting structure and a hair dryer. Figure 2 Enlarged view of the structure at point A in the image.

[0024] The components represented by each number in the attached diagram are listed below: 1. Upper shell; 11. Main air intake unit; 12. Column hole; 2. Lower shell; 21. Air outlet; 22. Pre-set through slot; 23. Accommodation position; 231. Screw hole post; 232. Reinforcing plate; 233. Positioning plate; 24. Secondary air intake unit; 25. Wiring groove; 26. Assembly column; 3. PCB board; 31. First component group; 32. Second component group; 33. Notch. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Please see Figure 1-4 This utility model provides a circuit board mounting structure, which includes at least a housing and a PCB board 3 housed in the housing; wherein, a first component group 31 is mounted on the side of the PCB board 3 facing the housing, and a second component group 32 is mounted on the other side of the PCB board 3, wherein the height of each component in the first component group 31 in its working state is greater than the height of each component in the second component group 32 in its working state.

[0027] Specifically, the first component group 31 can be thick components (the thickness being the usable height), such as inductors, electrolytic capacitors, control chips, and rectifiers, while the second component group 32 can be very small and thin components, such as surface mount resistors and surface mount capacitors. This invention places the tallest components on one side, with the tallest component determining the PCB height. Compared to existing technologies that arbitrarily arrange components (such as placing electrolytic capacitors and inductors on opposite sides of the circuit board), this invention results in a shorter PCB height, and the outer casing of the PCB tapers from thick to thin, making it easier for the user to hold.

[0028] In some embodiments, the PCB board 3 is mounted on the lower side of the lower shell 2 away from the upper shell 1. This design makes full use of the internal space of the lower shell 2. At the same time, the shell is provided with a ventilation channel, and the first component group 31 is accommodated in the ventilation channel.

[0029] The design of the ventilation channels, combined with the layout of the first component group 31, not only optimizes space utilization but also achieves excellent heat dissipation. This compact design makes the overall circuit board mounting structure more streamlined, enabling the miniaturization of the hair dryer.

[0030] Furthermore, the PCB board 3 is attached to one side of the housing;

[0031] Specifically, the bonding installation method makes the connection between the PCB board 3 and the housing more secure, reducing the possible shaking or loosening of the PCB board 3 during operation, thereby improving the structural stability of the entire device and making full use of the space inside the housing to avoid wasting space.

[0032] Furthermore, the housing includes a lower shell 2 and an upper shell 1. One end of the upper shell 1 has a main air intake unit 11, and the lower shell 2 has an air outlet 21 at the end away from the main air intake unit 11. The lower shell 2 and the upper shell 1 enclose each other to form a ventilation channel. One end of the ventilation channel is connected to the main air intake unit 11, and the other end is connected to the air outlet 21 located on the lower shell 2.

[0033] Specifically, the upper shell 1 and the lower shell 2 are fixed together as a single structure with screws. The lower shell 2 has multiple assembly cylinders 26 with internal threads on its edge. The upper shell 1 has cylinder holes 12 that are directly opposite to each assembly cylinder 26. Screws can pass through the cylinder holes 12 on the upper shell 1 and then engage with the internal threads in the assembly cylinders 26 on the lower shell 2, thereby achieving a tight fixation between the upper shell 1 and the lower shell 2. This connection method not only ensures a stable connection between the upper shell 1 and the lower shell 2, but also facilitates disassembly, making it convenient to repair or replace electronic components such as motors and fans between the upper shell 1 and the lower shell 2.

[0034] Specifically, the main air intake unit 11 provides sufficient cold air for the heat dissipation system, ensuring that the airflow in the ventilation channel can efficiently remove heat. Specifically, the main air intake unit 11 includes multiple air intake holes arranged in an array. Optionally, the air intake holes can be circular, rectangular, or strip-shaped. The air intake holes are evenly distributed on the curved surface of the upper shell 1 to maximize the air intake area.

[0035] Specifically, the main function of the ventilation channel is to guide cold air into the blower, pass through the first component group 31 area of ​​the PCB board 3, absorb heat, and then discharge it from the air outlet 21. The preset channel 22 is set in the area of ​​the lower shell 2 corresponding to the main air intake unit 11, so that the first component group 31 on the PCB board 3 can be directly exposed in the ventilation channel.

[0036] Furthermore, a preset through slot 22 is provided in the area of ​​the lower shell 2 corresponding to the main air intake unit 11, and a first component group 31 is installed in the area of ​​the PCB board 3 exposed in the preset through slot 22;

[0037] Specifically, the first component group 31 typically generates a lot of heat during operation. By installing these components in the area of ​​the PCB board 3 exposed within the preset through slot 22, airflow can be directly introduced for heat dissipation using the main air intake unit 11 and the secondary air intake unit 24. The first component group 31 is installed in the area of ​​the PCB board 3 exposed within the preset through slot 22. This layout allows the first component group 31 to be directly exposed in the ventilation channel and dissipated using airflow. The second component group 32 typically generates less heat. By distributing it on the side away from the first component group 31, heat concentration can be avoided, further optimizing the heat dissipation effect. By reasonably selecting and arranging the second component group 32, the possibility of circuit failure can be effectively reduced.

[0038] Furthermore, the lower shell 2 is provided with a receiving position 23 on its lower side away from the upper shell 1, which is connected to the preset through slot 22, and the PCB board 3 is adapted to be installed in the receiving position 23.

[0039] Specifically, the pre-set through slot 22 is an opening area on the lower shell 2, used to expose the first component group 31 on the PCB board 3, so that it can be directly exposed in the ventilation channel for heat dissipation. The PCB board 3 also serves to block the pre-set through slot 22, thereby forming a complete ventilation channel.

[0040] Furthermore, the lower shell 2 is provided with auxiliary air intake units 24 on both sides of the preset through slot 22;

[0041] Specifically, the first component group 31 generates a lot of heat when operating at high power. The secondary air intake unit 24 allows air to enter from both sides of the blower, which can more effectively introduce cooling air into the area of ​​the first component group 31 on the PCB board 3 to ensure the heat dissipation efficiency of the first component group 31.

[0042] Specifically, the secondary air intake unit 24 is composed of multiple air holes arranged in an array, which can provide ventilation over a large area;

[0043] Alternatively, the vents may be circular or strip-shaped to allow airflow to pass through.

[0044] Furthermore, a wiring area is formed between the two side walls of the PCB board 3 and the receiving position 23, and at least one wire-passing groove 25 is provided on the lower shell 2 corresponding to the wiring area.

[0045] Specifically, the wiring area provides a clear path for the wires, making the wiring neater, easier to install and maintain. Wiring through the wire channel 25 does not interfere with the airflow of the ventilation channel, making the entire circuit board mounting structure more compact, saving space, and meeting the design requirements of miniaturization of the blower. Maintenance personnel can easily find and replace damaged components or wires.

[0046] Furthermore, multiple screw hole posts 231 are provided on both sides of the receiving position 23, and a reinforcing plate 232 is connected between adjacent screw hole posts 231. A positioning plate 233 is provided on the side of the screw hole post 231 opposite to the reinforcing plate 232. The PCB board 3 is adapted to be installed between each positioning plate 233. A notch 33 is provided on the edge of the PCB board 3 at the position directly opposite to the screw hole post 231.

[0047] Specifically, the receiving position 23 is a specially designed space area on the lower shell 2 for accommodating the PCB board 3. It is connected to the preset through slot 22, so that the first component group 31 on the PCB board 3 can be exposed in the preset through slot 22, thereby being directly exposed to the ventilation channel for heat dissipation.

[0048] Specifically, the multiple screw holes 231 on both sides of the receiving position 23 are used to fix the PCB board 3 or other related components. The presence of the screw holes 231 allows the PCB board 3 to be firmly installed on the lower shell 2 by fasteners such as screws, ensuring its stability during operation.

[0049] Specifically, the reinforcing plate 232 not only improves the overall rigidity of the receiving position 23, but also disperses external pressure to prevent the lower shell 2 from deforming or being damaged due to excessive local stress. This design is particularly suitable for devices such as hair dryers that need to be used in environments with high power operation and frequent movement.

[0050] Specifically, the receiving position 23 is a space with protruding edges and recessed center. The bottom of this space gradually rises from both sides to the center. The reinforcing plate 232 is connected between adjacent screw hole posts 231. The edges of multiple reinforcing plates 232 away from the lower shell 2 are all located in the same plane to ensure that the PCB board 3 can be placed flat.

[0051] Specifically, the positioning plate 233 has a semi-circular structure, and the recessed structure of the positioning plate 233 is directly opposite the notch 33, which facilitates the precise positioning of the PCB board 3.

[0052] Specifically, by installing the PCB board 3 between each positioning plate 233, the position of the PCB board 3 in space can be ensured to be accurate, avoiding the tilting or loosening of the circuit board due to installation errors.

[0053] Specifically, by passing the screw through the notch 33 and screwing it into the screw hole post 231, the PCB board 3 can be pressed into the receiving position 23 to prevent the PCB board 3 from falling off.

[0054] In addition, this utility model also provides a hair dryer, including the aforementioned circuit board mounting structure.

Claims

1. A circuit board mounting structure, characterized by comprising: It includes at least the housing and the PCB board housed within the housing (3): The PCB board (3) has a first component group (31) installed on the side facing the shell, and a second component group (32) installed on the other side of the PCB board (3). The height of each component in the first component group (31) is greater than the height of each component in the second component group (32).

2. The circuit board mounting structure according to claim 1, characterized by: The housing is provided with a ventilation channel, and the first component group (31) is housed in the ventilation channel.

3. The circuit board mounting structure of claim 1, wherein: The PCB board (3) is attached to one side of the housing.

4. The circuit board mounting structure of claim 1, wherein: The housing includes a lower shell (2) and an upper shell (1). The upper shell (1) has a main air intake unit (11) at one end, and the lower shell (2) has an air outlet (21) at the end away from the main air intake unit (11). The lower shell (2) and the upper shell (1) enclose each other to form a ventilation channel. One end of the ventilation channel is connected to the main air intake unit (11), and the other end is connected to the air outlet (21) located on the lower shell (2).

5. The circuit board mounting structure according to claim 4, characterized by: The lower shell (2) is provided with a preset through slot (22) in the area corresponding to the main air intake unit (11), and the first component group (31) is installed in the area of ​​the PCB board (3) exposed in the preset through slot (22).

6. The circuit board mounting structure according to claim 4, characterized by: The lower shell (2) has a receiving position (23) connected to the preset through slot (22) on its lower side away from the upper shell (1), and the PCB board (3) is adapted to be installed in the receiving position (23).

7. The circuit board mounting structure according to claim 4, characterized by: The lower shell (2) is provided with auxiliary air intake units (24) on both sides of the preset through slot (22).

8. The circuit board mounting structure according to claim 6, characterized by: A wiring area is formed between the two side walls of the PCB board (3) and the receiving position (23), and at least one wire slot (25) is provided on the lower shell (2) corresponding to the wiring area.

9. The circuit board mounting structure of claim 6, wherein: Multiple screw holes (231) are provided on both sides of the receiving position (23). A reinforcing plate (232) is connected between adjacent screw holes (231). A positioning plate (233) is provided on the side of the screw hole (231) opposite to the reinforcing plate (232). The PCB board (3) is adapted to be installed between each positioning plate (233). A notch (33) is provided on the edge of the PCB board (3) at the position directly opposite to the screw hole (231).

10. A hair dryer characterized by Includes the circuit board mounting structure as described in any one of claims 1-9.

Images