Multi-interface circuit board

By designing a dustproof moving mechanism and protective components on the circuit board, the interference problem during the use of the USB port was solved, and stability was improved.

CN224124324UActive Publication Date: 2026-04-14SHENZHEN HUAFAXIN ELECTRONIC TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN HUAFAXIN ELECTRONIC TECHNOLOGY CO LTD
Filing Date
2025-07-09
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

When using the USB port on existing circuit boards, the dustproof device is prone to interference with other components when it is open or closed, leading to instability in use.

Method used

A dustproof moving mechanism and protective components were designed, including a fixed frame, a dustproof net, an L-shaped fixed plate, a rotating plate, a pin, a spring, and a moving column. The dustproof net is limited and protected by sliding and rotating to avoid interference.

Benefits of technology

It effectively prevents dust from being used for USB interfaces and avoids interference between the mounting frame and other components of the circuit board during use, thus improving the stability of the circuit board.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a multi-interface circuit board, which relates to the technical field of circuit boards, and comprises a circuit board body, a chip, a diode and a capacitor, a plurality of groups of uniformly distributed USB interface assemblies are arranged on the right side of the upper end of the circuit board body, protection assemblies are arranged at all corners of the circuit board body, and each USB interface assembly comprises a USB interface body. A dustproof moving mechanism is arranged at the outer end of the USB interface body, the dustproof moving mechanism is used for carrying out an external dust blocking action on the USB interface body, and the protection assembly is used for carrying out an external protection action on the circuit board body. According to the utility model, external dust blocking action can be carried out on the unused USB interface body through the dustproof moving mechanism, and limiting action can be carried out on the whole body formed by the fixed frame and the dustproof net on the used USB interface body, so that the phenomenon that the fixed frame interferes with other parts on the circuit board body can be avoided; and the stability of the circuit board body in the use process is improved.
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Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, specifically to a multi-interface circuit board. Background Technology

[0002] Circuit boards generally refer to electronic circuit boards, also known as ceramic circuit boards, alumina ceramic circuit boards, PCB boards, etc. A circuit board is a printed board on an insulating substrate with interconnecting wires formed according to a predetermined design, but without any printed components. Modern circuit boards can be classified into single-sided boards, double-sided boards, and multi-layer circuit boards according to the number of layers. Circuit boards are important electronic components, serving as the support for electronic components and the carrier for electrical connections between them. In today's world where electronic devices are ubiquitous, circuit boards are present in the electronic devices we see, from small electronic watches and calculators to large radio frequency cables.

[0003] For example, utility model patent CN219626987U discloses a circuit board for a dustproof USB interface, including a circuit board body. Several chips are fixedly connected to the upper middle part of the circuit board body. Through holes are opened at the four corners of the upper part of the circuit board body. Protective devices are fixedly connected to each of the four through holes. A USB port is fixedly connected to the upper right part of the circuit board body. A dustproof device is fixedly connected to the outer surface of the USB port. By setting the dustproof device, the shell is fixedly connected to the outer surface of the USB port. When the USB connector is not inserted into the USB port, the outer frame can be pulled to adjust the angle, so that the magnetic block and the metal block are magnetically connected together, thereby blocking the dustproof mesh from entering the USB port and preventing dust from entering the USB port. The dustproof USB interface circuit board described in this utility model avoids damage to the circuit board during installation through the protective device. However, when using the USB port, the outer frame needs to be opened. The opened outer frame is in an open / closed state without any limit, which can cause interference between the outer frame and the components on the circuit board, ultimately leading to instability of the circuit board during use. To address this, we propose a multi-interface circuit board. Utility Model Content

[0004] The purpose of this invention is to provide a multi-interface circuit board to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-interface circuit board, comprising a circuit board body, a chip, a diode, and a capacitor. Multiple sets of evenly distributed USB interface components are arranged on the upper right side of the circuit board body. Protective components are provided at each corner of the circuit board body. Each USB interface component includes a USB interface body. A dustproof moving mechanism is provided at the outer end of the USB interface body. The dustproof moving mechanism is used to block external dust from the USB interface body. The protective components are used to provide external protection for the circuit board body.

[0006] Preferably, the dustproof moving mechanism includes a fixed frame, on which a USB interface body is fitted. A dustproof mesh is fixedly installed at the front end of the fixed frame. L-shaped fixed plates are fixedly installed on both sides of the USB interface body. Each L-shaped fixed plate has a first insertion hole on its surface and a rotating plate abutting against its inner wall. A second insertion hole is opened on the surface of the rotating plate. A pin is inserted between the first and second insertion holes. A rotating column is fixedly installed at the front end of the rotating plate. A placement groove is opened at the front end of the rotating column. A spring is fixedly installed on the inner wall of the placement groove. A moving column is fixedly installed at the end of the spring away from the rotating column. A contact block is fixedly installed at the end of the moving column away from the spring. A fixed frame is fixedly installed at the end of the two contact blocks that are close to each other.

[0007] Preferably, the protective component includes a contact post that penetrates the circuit board body, an upper baffle plate is detachably installed on the upper end of the contact post, and a lower baffle plate is detachably installed on the end of the contact post away from the upper baffle plate.

[0008] Preferably, the circuit board body is provided with chips, diodes and capacitors, and multiple chips, diodes and capacitors are provided.

[0009] Preferably, a limiting plate is fixedly installed at the outer end of the pin, and the end of the limiting plate near the L-shaped fixing plate abuts against the L-shaped fixing plate.

[0010] Preferably, the outer end of the movable column is slidably connected to the rotating column, and the outer diameter of the movable column is matched with the inner diameter of the placement groove.

[0011] Preferably, two symmetrically arranged blocking blocks are fixedly installed on the upper end of the USB interface body, and the blocking blocks are arranged in a triangular shape.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model can block external dust from the unused USB interface body through the dustproof moving mechanism, and limit the overall structure composed of the fixing frame and dustproof net on the used USB interface body, so that there will be no interference between the fixing frame and other parts on the circuit board body, thus improving the stability of the circuit board body during use.

[0014] 2. This utility model can achieve the protection of components on the outside of the circuit board body by installing the upper and lower blocking plates onto the contact post through the protective components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the USB interface component structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the dustproof moving mechanism of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged view of the structure of section A in the middle;

[0019] Figure 5 This is a schematic diagram of the protective component structure of this utility model.

[0020] In the diagram: 1. Circuit board body; 2. USB interface assembly; 21. USB interface body; 22. Blocking block; 3. Dustproof moving mechanism; 31. Fixing frame; 32. Dustproof net; 33. Contact block; 34. L-shaped fixing plate; 35. First socket; 36. Rotating plate; 37. Second socket; 38. Pin; 39. Limiting plate; 310. Rotating column; 311. Placement slot; 312. Spring; 313. Moving column; 4. Chip; 5. Diode; 6. Capacitor; 7. Protective assembly; 71. Contact column; 72. Upper blocking plate; 73. Lower blocking plate. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-5This utility model provides a technical solution: a multi-interface circuit board, including a circuit board body 1, a chip 4, a diode 5 and a capacitor 6. Multiple sets of evenly distributed USB interface components 2 are arranged on the upper right side of the circuit board body 1. Each corner of the circuit board body 1 is provided with a protective component 7. The USB interface component 2 includes a USB interface body 21. A dustproof moving mechanism 3 is provided at the outer end of the USB interface body 21. The dustproof moving mechanism 3 is used to block external dust from the USB interface body 21. The protective component 7 is used to provide external protection for the circuit board body 1.

[0023] In this embodiment, the dustproof moving mechanism 3 includes a fixed frame 31, on which a USB interface body 21 is fitted. A dustproof net 32 ​​is fixedly installed at the front end of the fixed frame 31. L-shaped fixed plates 34 are fixedly installed on both sides of the USB interface body 21. Each L-shaped fixed plate 34 has a first insertion hole 35 on its surface. A rotating plate 36 abuts against the inner wall of each L-shaped fixed plate 34. A second insertion hole 37 is opened on the surface of the rotating plate 36. A pin 38 is inserted between the first insertion hole 35 and the second insertion hole 37. A rotating column 310 is fixedly installed at the front end of the rotating plate 36. A placement groove 311 is opened at the front end of the rotating column 310. A spring 312 is fixedly installed on the inner wall of the placement groove 311. A moving column 313 is fixedly installed at the end of the spring 312 away from the rotating column 310. A contact block 33 is fixedly installed at the end of the moving column 313 away from the spring 312. The fixed frame 31 is fixedly installed at the end of the two contact blocks 33 that are close to each other.

[0024] Specifically, when the USB interface body 21 is needed, the fixing frame 31 can be pulled outward. This causes the dustproof mesh 32 to move away from the USB interface body 21. During this process, the moving column 313 slides outward within the placement slot 311, causing the spring 312 to stretch. Once the fixing frame 31 is completely detached from the USB interface body 21, it can be rotated counter-clockwise. This causes the contact block 33, rotating column 310, spring 312, moving column 313, and rotating plate 36 to rotate counter-clockwise. During this process, the rotating plate 36 slides relative to the pin 38. When the fixing frame 31 rotates above the USB interface body 21, the work on the fixing frame 31 can be released. Due to the elastic force of the spring 312, the spring 312 causes the moving column 313 to move inward within the placement slot 311. The fixing frame 31 is complete when its left end abuts against the blocking block 22.

[0025] In this embodiment, the protective component 7 includes a contact post 71 that penetrates the circuit board body 1. An upper baffle plate 72 is detachably installed on the upper end of the contact post 71, and a lower baffle plate 73 is detachably installed on the end of the contact post 71 away from the upper baffle plate 72.

[0026] Specifically, the protective component 7 can be used to protect the components on the outside of the circuit board body 1 by installing the upper baffle plate 72 and the lower baffle plate 73 onto the contact post 71.

[0027] In this embodiment, the circuit board body 1 is provided with a chip 4, a diode 5 and a capacitor 6, and multiple chips 4, diodes 5 and capacitors 6 are provided.

[0028] Specifically, the circuit board body 1 can be used normally through chip 4, diode 5 and capacitor 6.

[0029] In this embodiment, a limiting plate 39 is fixedly installed on the outer end of the pin 38, and the end of the limiting plate 39 near the L-shaped fixing plate 34 abuts against the L-shaped fixing plate 34.

[0030] Specifically, the limiting plate 39 can be used to limit the movement of the pin 38.

[0031] In this embodiment, the outer end of the movable column 313 is slidably connected to the rotating column 310, and the outer diameter of the movable column 313 is matched with the inner diameter of the placement groove 311.

[0032] Specifically, ensure that the movable column 313 slides within the placement slot 311 without interference.

[0033] In this embodiment, two symmetrically arranged blocking blocks 22 are fixedly installed on the upper end of the USB interface body 21, and the blocking blocks 22 are arranged in a triangular shape.

[0034] Specifically, the blocking block 22 can be used to limit and block the fixed frame 31.

[0035] Working principle: When the USB interface body 21 is needed, the fixing frame 31 can be pulled outward. This causes the dustproof mesh 32 to move away from the USB interface body 21. During this process, the moving column 313 slides outward within the placement slot 311, causing the spring 312 to stretch. Once the fixing frame 31 is completely detached from the USB interface body 21, it can be rotated counterclockwise. This rotates the contact block... 33. The rotating column 310, spring 312, moving column 313 and rotating plate 36 rotate counterclockwise. During this process, the rotating plate 36 and the pin 38 slide relative to each other. When the fixed frame 31 rotates above the USB interface body 21, the work on the fixed frame 31 can be released. At this time, due to the elastic force of the spring 312, the spring 312 drives the moving column 313 to move inward in the placement slot 311. When the left end of the fixed frame 31 abuts against the blocking block 22, it is ready.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-interface circuit board, comprising a circuit board body (1), a chip (4), a diode (5), and a capacitor (6), characterized in that: The upper right side of the circuit board body (1) is provided with multiple sets of evenly distributed USB interface components (2). Each corner of the circuit board body (1) is provided with a protective component (7). The USB interface component (2) includes a USB interface body (21). The outer end of the USB interface body (21) is provided with a dustproof moving mechanism (3). The dustproof moving mechanism (3) is used to block external dust from the USB interface body (21). The protective component (7) is used to provide external protection for the circuit board body (1).

2. The multi-interface circuit board according to claim 1, characterized in that: The dustproof moving mechanism (3) includes a fixed frame (31), on which a USB interface body (21) is fitted. A dustproof net (32) is fixedly installed at the front end of the fixed frame (31). L-shaped fixing plates (34) are fixedly installed on both sides of the USB interface body (21). Each L-shaped fixing plate (34) has a first insertion hole (35) on its surface. A rotating plate (36) abuts against the inner wall of each L-shaped fixing plate (34). A second insertion hole (37) is opened on the surface of the rotating plate (36). The first insertion hole (35) and the second insertion hole (37) are connected. A pin (38) is inserted between the sockets (37). A rotating column (310) is fixedly installed at the front end of the rotating plate (36). A placement groove (311) is opened at the front end of the rotating column (310). A spring (312) is fixedly installed on the inner wall of the placement groove (311). A moving column (313) is fixedly installed at the end of the spring (312) away from the rotating column (310). A contact block (33) is fixedly installed at the end of the moving column (313) away from the spring (312). A fixing frame (31) is fixedly installed at the end of the two contact blocks (33) that are close to each other.

3. A multi-interface circuit board according to claim 1, characterized in that: The protective component (7) includes a contact post (71) that penetrates the circuit board body (1). An upper baffle plate (72) is detachably installed on the upper end of the contact post (71), and a lower baffle plate (73) is detachably installed on the end of the contact post (71) away from the upper baffle plate (72).

4. A multi-interface circuit board according to claim 1, characterized in that: The circuit board body (1) is provided with a chip (4), a diode (5) and a capacitor (6), and multiple chips (4), diodes (5) and capacitors (6) are provided.

5. A multi-interface circuit board according to claim 2, characterized in that: The pin (38) is fixedly installed with a limiting plate (39) at its outer end, and the limiting plate (39) abuts against the L-shaped fixing plate (34) at one end near the L-shaped fixing plate (34).

6. A multi-interface circuit board according to claim 2, characterized in that: The outer end of the movable column (313) is slidably connected to the rotating column (310), and the outer diameter of the movable column (313) is matched with the inner diameter of the placement groove (311).

7. A multi-interface circuit board according to claim 1, characterized in that: Two symmetrically arranged blocking blocks (22) are fixedly installed on the upper end of the USB interface body (21), and the blocking blocks (22) are arranged in a triangular shape.

Citation Information

Patent Citations

  • Circuit board of dustproof USB interface

    CN219626987U