A DC plate
By using an interlaced connection structure between the main circuit board and the DC circuit board, the problem of transformer position limitation in ultra-thin chargers is solved, enabling a centered output interface design, improving product aesthetics and heat dissipation efficiency, and simplifying the production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN MAKER HENGYUAN TECH CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
In existing ultra-thin charger designs, the transformer's position limits the output interface from being centered, affecting the product's aesthetics, increasing internal space congestion, reducing heat dissipation efficiency, and increasing production costs due to the use of special sockets.
The main circuit board and the DC circuit board are connected by an interlaced structure. The two circuit boards are interlaced by positioning pins. The output interface is centrally located and connected by metal positioning pins, which simplifies the assembly process.
The system achieves a symmetrical and centered layout of the output interfaces, optimizes the internal component space, improves heat dissipation efficiency, maintains the product's compactness and aesthetics, and simplifies the production process while reducing production costs.
Smart Images
Figure CN224503611U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic equipment technology, specifically to a DC board. Background Technology
[0002] With the widespread use of portable electronic devices, ultra-thin chargers have gained market favor due to their portability and aesthetics. Currently, most ultra-thin chargers on the market adopt a single-layer flat circuit board design, where components such as transformers, rectifier circuits, and output interfaces are all located on the same PCB. However, because transformers are relatively large and have a fixed shape, the circuit board usually needs to be placed in the center to ensure the product achieves an ultra-thin design and efficient heat dissipation. This layout means that the output interfaces (such as USB-C or DC sockets) cannot be symmetrically centered, affecting the product's visual harmony. If the interface position is forcibly adjusted, the overall thickness of the charger needs to be increased or a custom socket needs to be used, further compressing the internal space and reducing structural compactness.
[0003] Existing ultra-thin charger designs suffer from the following core problems: First, the single-layer circuit board layout is limited by the transformer's position, and the offset design of the output interface sacrifices product aesthetics, failing to meet consumer needs. Second, achieving a centered interface by thickening the casing or using a recessed socket (such as a recessed DC socket) occupies additional internal space, leading to crowded component layout, reduced heat dissipation efficiency, and even affecting circuit stability. Furthermore, the introduction of specialized sockets increases production costs, while the increased overall thickness contradicts the original intention of ultra-thin design. These issues collectively limit the balance between size optimization and functional design in ultra-thin chargers. Utility Model Content
[0004] The purpose of this utility model is to provide a DC board that solves the problem of the output interface not being centered due to the transformer position limitation in the design of ultra-thin chargers by setting a structure in which the main circuit board body and the DC circuit board body are connected in an alternating and overlapping manner.
[0005] This utility model is achieved through the following technical solution:
[0006] This utility model is a DC board, including a main circuit board body, positioning and fixing pins, and a DC circuit board body. The DC circuit board body is disposed on the top of the main circuit board body. The main circuit board body has five positioning holes and five through holes. The positions of the positioning holes and the through holes correspond to each other. There are five positioning and fixing pins, which pass through the corresponding through holes and are engaged in the positioning holes.
[0007] Furthermore, a clearance opening is provided at the end of the main circuit board body, and the bottom of the DC circuit board body is located on one side of the clearance opening.
[0008] Furthermore, a reserved opening is provided at the end of the DC circuit board body, and five through holes are located on one side of the reserved opening, with the reserved opening at the top of the clearance opening.
[0009] Furthermore, a transformer body is provided at the end of the main circuit board body, and an output port socket is provided at the end of the DC circuit board body.
[0010] Furthermore, the positioning and fixing needle has a needle tube and a needle shaft, with the needle tube having a larger diameter than the needle shaft.
[0011] Furthermore, the needle shaft is connected to the positioning hole, and the needle tube is connected to the through hole.
[0012] This utility model has the following beneficial effects:
[0013] This utility model effectively solves the technical problem of the output interface not being centered due to the transformer position limitation in the design of ultra-thin chargers by setting a structure in which the main circuit board body and the DC circuit board body are connected by an interlaced overlap. The two circuit boards maintain the compactness of the overall structure and achieve a symmetrical and centered layout of the output interface by spatially staggered superposition. At the same time, the structure optimizes the arrangement space of internal components and improves heat dissipation efficiency. Without increasing the overall thickness of the product, it takes into account both the aesthetics and functionality of the charger and breaks through the limitations of traditional single-layer circuit board design in terms of space utilization.
[0014] This invention uses metal positioning pins as a connection method for two circuit boards. The positioning pins, with one end larger than the other, achieve an overlapping effect between the main circuit board and the DC circuit board. The overlap gap is equivalent to a zero-to-zero overlap connection between the two circuit boards. In this connection method, the pin shaft of the positioning pin and the positioning hole of the main circuit board can be directly surface-mounted without manual soldering. Compared with traditional soldering or ribbon cable connection methods, the positioning pin connection does not require additional soldering steps, simplifying the assembly process, improving production efficiency, and saving connection space, making the product structure more compact.
[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the DC board;
[0017] Figure 2 This is a schematic diagram of the overall structure of the DC board;
[0018] Figure 3 This is a structural diagram of the main circuit board body and the DC circuit board body;
[0019] Figure 4This is a structural diagram of the main circuit board body and the DC circuit board body;
[0020] Figure 5 This is a schematic diagram of the positioning and fixing pin.
[0021] In the diagram: 1. Main circuit board body; 101. Transformer body; 102. Clearance port; 103. Positioning hole; 2. DC circuit board body; 201. Output port socket; 202. Reserved port; 203. Through hole; 3. Positioning and fixing pin; 301. Needle tube; 302. Needle shaft. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-5 This utility model provides a technical solution: a DC board, including a main circuit board body 1, positioning pins 3, and a DC circuit board body 2. The main circuit board body 1 and the DC circuit board body 2 are electrically connected and mechanically fixed by the positioning pins 3. The DC circuit board body 2 is disposed on the top of the main circuit board body 1. The main circuit board body 1 has five positioning holes 103. The DC circuit board body 2 has five through holes 203. The positions of the positioning holes 103 and the through holes 203 correspond to each other. The five positioning pins 3 pass through the corresponding through holes 203 and are engaged in the positioning holes 103. The main circuit board body 1 and the DC circuit board body 2 are stacked vertically. The layered layout and positioning pin 3 are connected to the main circuit board body 1 and the DC circuit board body 2 by welding to ensure the stability of signal and power transmission. When the DC circuit board body 2 is stacked on the main circuit board body 1, the position of the output port socket 201 is centered inside the charger shell, improving the product's aesthetics. In the initial state, the pin shaft 302 is fixed in the positioning hole 103 of the main circuit board body 1 by manufacturing surface mount technology. The pin tube 301 is directly welded after passing through the through hole 203 of the DC circuit board body 2. The welding method ensures the reliability of the electrical connection. At this time, the pin shaft 302 is simultaneously surface mount welded to the main circuit board body 1, and the pin tube 301 is welded to the DC circuit board body 2 to form a complete circuit path. The welding method maintains a long-term stable electrical connection.
[0024] like Figure 3 and Figure 4As shown, the end of the main circuit board body 1 is provided with a clearance opening 102, and the bottom of the DC circuit board body 2 is located on one side of the clearance opening 102. The clearance opening 102 provides space for the electronic components at the bottom of the DC circuit board body 2 to avoid interference. The end of the DC circuit board body 2 is provided with a reserved opening 202, and five through holes 203 are located on one side of the reserved opening 202. The reserved opening 202 is located at the top of the clearance opening 102. The reserved opening 202 corresponds to the clearance opening 102 of the main circuit board body 1 to ensure that the overall thickness is not affected by component interference when the main circuit board body 1 and the DC circuit board body 2 are stacked.
[0025] like Figure 1 and Figure 2 As shown, a transformer body 101 is provided at the end of the main circuit board body 1. The transformer body 101 is used to realize the voltage conversion function. An output port socket 201 is provided at the end of the DC circuit board body 2. The output port socket 201 is used to connect external devices.
[0026] like Figure 3 , Figure 4 and Figure 5 As shown, the positioning and fixing pin 3 has a needle tube 301 and a needle shaft 302 made of metal. The needle shaft 302 is reliably connected to the main circuit board body 1 by surface mount welding, and the needle tube 301 is reliably connected to the DC circuit board body 2 by welding to ensure contact stability.
[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A DC board, comprising a main circuit board body (1) and a DC circuit board body (2), characterized in that: The DC circuit board body (2) is set on the top of the main circuit board body (1). The main circuit board body (1) has five positioning holes (103). The DC circuit board body (2) has five through holes (203). The positions of the positioning holes (103) and the through holes (203) correspond to each other. It also includes positioning and fixing pins (3), the number of which is five, and the five positioning and fixing pins (3) respectively pass through the corresponding through holes (203) and are fitted into the positioning holes (103).
2. A DC board according to claim 1, characterized in that, The main circuit board body (1) has a clearance opening (102) at its end, and the bottom of the DC circuit board body (2) is located on one side of the clearance opening (102).
3. A DC board according to claim 2, characterized in that, The DC circuit board body (2) has a reserved opening (202) at its end, and five through holes (203) are located on one side of the reserved opening (202). The reserved opening (202) is located at the top of the clearance opening (102).
4. A DC board according to claim 1, characterized in that, The main circuit board body (1) is provided with a transformer body (101) at one end, and the DC circuit board body (2) is provided with an output port socket (201) at one end.
5. A DC board according to claim 1, characterized in that, The positioning and fixing needle (3) has a needle tube (301) and a needle shaft (302), wherein the diameter of the needle tube (301) is larger than that of the needle shaft (302).
6. A DC board according to claim 5, characterized in that, The needle shaft (302) is connected to the positioning hole (103), and the needle tube (301) is connected to the through hole (203).