Anti-static structure and electronic product
By setting conductive plates and connectors between the electrical interface and the housing, an electrostatic conduction path is formed, which solves the problem of electrostatic discharge from exposed electrical interfaces such as USB causing damage to the circuit board, thereby improving the stability and service life of the device.
Patent Information
- Application Number
- CN202520360932.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Exposed electrical interfaces such as USB are prone to static electricity from human contact or the insertion of peripherals during use, which can damage the internal circuit board and affect the stability and lifespan of the device.
The design employs conductive sheets and conductive connectors to conduct static electricity from the electrical interface into the housing. The conductive sheets then contact the inner wall of the housing to form a static electricity conduction path, thus preventing static electricity from affecting the circuit board.
It effectively prevents static electricity from accumulating near the circuit board, reducing the risk of damage to the circuit board and improving the stability and service life of the equipment.
Smart Images
Figure CN223828847U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic product technology, and in particular to an anti-static structure and an electronic product. Background Technology
[0002] Exposed electrical interfaces such as USB ports are key components in electronic products used for charging, data transfer, and peripheral connection. However, they are prone to static electricity buildup during use due to human contact or peripheral insertion, which can damage internal circuit boards and affect the stability and lifespan of the device. Utility Model Content
[0003] The main purpose of this invention is to propose an anti-static structure and electronic product, which aims to avoid the impact of static electricity on circuit boards.
[0004] To achieve the above objectives, the antistatic structure proposed in this utility model includes:
[0005] case;
[0006] A circuit assembly, comprising a circuit board, a connector, and an electrical interface, wherein the circuit board is disposed within the housing, the electrical interface is exposed within the housing, the connector connects the circuit board and the electrical interface, and the connector has a conductive portion; and
[0007] A conductive sheet is disposed between the connector and the inner wall of the housing, and is in contact with the conductive part and the inner wall of the housing.
[0008] This utility model also proposes an electronic product, which includes the anti-static structure described above. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0010] Figure 1 A schematic diagram of an embodiment of the antistatic structure provided by this utility model;
[0011] Figure 2 A schematic diagram of an embodiment of the antistatic structure (hidden shell) provided by this utility model;
[0012] Figure 3 An exploded view of an embodiment of the antistatic structure (hidden shell) provided by this utility model;
[0013] Figure 4 This is a schematic diagram of one embodiment of a conductive sheet.
[0014] Explanation of icon numbers:
[0015] 100. Antistatic structure; 1. Housing; 2. Circuit board; 3. Connector; 31. Conductive part; 4. Electrical interface; 5. Conductive sheet; 51. First protrusion; 52. Second protrusion; 53. Mounting part; 54. Limiting block; 6. Bracket; 61. Positioning protrusion; 62. Mounting hole; 63. Limiting protrusion; 7. Conductive sleeve; 71. Positioning groove; 8. Elastic layer.
[0016] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0017] 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 scope of protection of the present utility model.
[0018] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0019] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0020] This utility model proposes an antistatic structure 100.
[0021] Please see Figures 1 to 3 In one embodiment of this utility model, the antistatic structure 100 includes a housing 1, a circuit assembly, and a conductive sheet 5; the circuit assembly includes a circuit board 2, a connector 3, and an electrical interface 4. The circuit board 2 is disposed inside the housing 1, the electrical interface 4 is exposed outside the housing 1, the connector 3 connects the circuit board 2 and the electrical interface 4, and the connector 3 has a conductive part 31; the conductive sheet 5 is disposed between the connector 3 and the inner wall of the housing 1, and is in contact with the conductive part 31 and the inner wall of the housing 1.
[0022] The casing 1 is made of a conductive metal material.
[0023] Connector 3 is an FPC (Flexible Printed Circuit). FPC possesses excellent flexibility and conductivity. Its conductive portion 31 is in close contact with the conductive sheet 5, enabling more efficient conduction of static electricity to the housing 1, further improving the efficiency and reliability of static discharge. As connector 3, FPC enables a more flexible and stable electrical connection between the circuit board 2 and the electrical interface 4. Its flexibility can, to some extent, buffer the impact of external forces on the connection points, reducing the impact of mechanical stress generated during the insertion or removal of peripheral devices on the connection, lowering the risk of loosening or damage, thereby improving the overall stability and service life of the device. In other embodiments, connector 3 can be a metal connector or a thin-film connector with good conductivity.
[0024] The conductive sheet 5 is made of copper, an excellent conductive material with high conductivity. In this anti-static structure 100, the copper conductive sheet 5 can quickly and efficiently conduct static electricity from the conductive part 31 of the connector 3 to the housing 1, greatly shortening the residence time of static electricity inside the equipment and avoiding the accumulation of static electricity near the circuit board 2. This effectively reduces the risk of damage to electronic components on the circuit board 2 by static electricity and ensures the stable operation of the equipment. Furthermore, copper has stable conductivity and low material cost.
[0025] In the technical solution of this utility model, by providing a conductive sheet 5 between the conductive part 31 of the connector 3 and the inner wall of the housing 1, and by making the conductive sheet 5 contact the conductive part 31 and the inner wall of the housing 1, an electrostatic conduction path is formed. When static electricity enters through the electrical interface 4, the conductive sheet 5 can conduct the static electricity into the housing 1, thereby avoiding the influence of static electricity on the circuit board 2.
[0026] To improve connection reliability, please refer to one embodiment of this utility model. Figure 3 and Figure 4The conductive sheet 5 has at least one first protrusion 51 on the side facing the conductive part 31, and each first protrusion 51 abuts against the conductive part 31. The abutment between the first protrusion 51 and the conductive part 31 increases the contact pressure between the conductive sheet 5 and the conductive part 31. During equipment use, even if subjected to vibration, impact, or other influences, the contact between the conductive sheet 5 and the conductive part 31 will not easily loosen or detach, thereby ensuring the stability and reliability of the electrostatic discharge path, effectively preventing the accumulation of static electricity at the connection point, and avoiding damage to the circuit board 2. Furthermore, with multiple first protrusions 51, the contact between the conductive sheet 5 and the conductive part 31 is no longer a simple planar contact, but forms a combination of point contact or line contact. This contact method can better adapt to minor deformations or positional deviations of the conductive part 31 during installation, ensuring good electrical connection under various installation conditions, and improving the adaptability and stability of the antistatic structure 100. Alternatively, a portion of the conductive sheet 5 may form a protrusion facing the conductive portion 31, and at least one first protrusion 51 may be formed on the side of this protrusion facing the conductive portion 31, so that the conductive sheet 5 can contact the conductive portion 31 more stably.
[0027] Furthermore, in one embodiment of this utility model, please refer to... Figure 3 and Figure 4 At least one second protrusion 52 is formed on the side of the conductive sheet 5 facing the inner wall of the housing 1, and each second protrusion 52 abuts against the inner wall of the housing 1. The abutment of the second protrusion 52 against the inner wall of the housing 1 increases the contact pressure between the conductive sheet 5 and the housing 1, thereby ensuring a stable electrical connection between the conductive sheet 5 and the housing 1, allowing static electricity to be conducted more effectively from the conductive sheet 5 to the housing 1, achieving reliable grounding, further improving the electrostatic protection effect, preventing static electricity from accumulating inside the equipment, and protecting the circuit board 2 from electrostatic damage. When multiple first protrusions 51 and second protrusions 52 are provided simultaneously, the presence of the first protrusions 51 and second protrusions 52 makes the conduction of static electricity between the conductive sheet 5 and the conductive part 31, and between the conductive sheet 5 and the housing 1 more uniform. In the contact area between the conductive sheet 5 and the conductive part 31, multiple first protrusions 51 disperse the current flow among multiple contact points, avoiding local overheating or arcing caused by the current concentrating at one point. Similarly, in the contact area between the conductive sheet 5 and the housing 1, the second protrusions 52 also play a role in balancing the current distribution, ensuring the safety and stability of the electrostatic discharge process, and extending the service life of the conductive sheet 5, the conductive part 31, and the housing 1.
[0028] In order to optimize the structural layout, please refer to one embodiment of this utility model. Figure 2 and Figure 3The anti-static structure 100 also includes a bracket 6, which is located inside the housing 1. The connector 3 is located on the bracket 6, and the circuit board 2 and electrical interface 4 are located at opposite ends of the bracket 6. The bracket 6 allows the circuit board 2 and electrical interface 4 to be positioned at opposite ends, fully utilizing the internal space of the housing 1 and avoiding mutual interference between them. It also provides more space for the installation of other electronic components and parts, facilitating the compact and miniaturized design of electronic products. The bracket 6 provides stable support and fixation for the connector 3, circuit board 2, and electrical interface 4, ensuring their relative positional relationship remains stable. This helps maintain good contact between the conductive sheet 5 and the conductive part 31 of the connector 3, as well as the inner wall of the housing 1, ensuring that static electricity can be smoothly conducted from the electrical interface 4 to the circuit board 2, and then through the conductive sheet 5 into the housing 1, improving the stability and reliability of the electrostatic protection.
[0029] Furthermore, in one embodiment of this utility model, please refer to... Figure 2 and Figure 3 The antistatic structure 100 also includes a conductive sleeve 7, which is fitted onto the support 6. A conductive sheet 5 is disposed between the connector 3 and the inner wall of the conductive sleeve 7, and contacts the conductive part 31 and the inner wall of the conductive sleeve 7. The outer wall of the conductive sleeve 7 contacts the inner wall of the housing 1. The conductive sleeve 7, fitted onto the support 6, provides more stable support and fixation for the connection between the connector 3, the conductive sheet 5, and the housing 1. The conductive sheet 5, sandwiched between the connector 3 and the inner wall of the conductive sleeve 7, is in close contact with the conductive part 31 and the inner wall of the conductive sleeve 7. This structure makes the relative positions of the components more stable, less prone to loosening or displacement due to external forces such as vibration and impact, ensuring the integrity and reliability of the electrostatic protection structure. When the conductive sheet 5 is provided with a second protrusion 52, the second protrusion 52 abuts against the inner wall of the conductive sleeve 7.
[0030] The conductive sleeve 7 is made of aluminum and undergoes conductive anode surface treatment. Aluminum itself has good conductivity, and the conductive anode surface treatment further enhances the surface conductivity of the conductive sleeve 7, enabling more effective conduction of static electricity. Simultaneously, the oxide film produced by the conductive anode surface treatment has high hardness and wear resistance, reducing the impact of surface wear on conductivity and ensuring that the conductive sleeve 7 maintains stable conductivity during long-term use. Furthermore, aluminum has good thermal conductivity, effectively dissipating the heat generated during equipment operation.
[0031] For ease of installation, please refer to one embodiment of this utility model. Figure 2 and Figure 3The bracket 6 is provided with a positioning protrusion 61; the conductive sleeve 7 is formed with a positioning groove 71, and the positioning protrusion 61 is engaged with the positioning groove 71. The engagement design of the positioning protrusion 61 and the positioning groove 71 makes the assembly between the conductive sleeve 7 and the bracket 6 very simple and quick. The installation of the conductive sleeve 7 on the bracket 6 can be completed without complicated tools or tedious alignment operations, greatly simplifying the assembly process. At the same time, the cooperation between the positioning protrusion 61 and the positioning groove 71 can accurately determine the position of the conductive sleeve 7 on the bracket 6, ensuring that the relative position between the conductive sleeve 7 and the bracket 6 is accurate. This precise assembly method helps to ensure good contact between the conductive sheet 5 and the conductive part 31 of the connector 3 and the inner wall of the conductive sleeve 7, while also ensuring tight contact between the outer wall of the conductive sleeve 7 and the inner wall of the housing 1, thereby improving the assembly accuracy and reliability of the entire antistatic structure 100.
[0032] Furthermore, in one embodiment of this utility model, please refer to... Figure 3 and Figure 4 The bracket 6 has a mounting hole 62; the conductive sheet 5 has a mounting portion 53, which is inserted into the mounting hole 62. The mounting portion 53 is formed by bending one end of the conductive sheet 5 at 90°. The cooperation between the mounting hole 62 and the mounting portion 53 can accurately determine the position of the conductive sheet 5 on the bracket 6, ensuring that the conductive sheet 5 is tightly fitted with the conductive portion 31 of the connector 3 and the inner wall of the conductive sleeve 7, thereby ensuring the stability and reliability of the electrostatic conduction path. The limiting insertion design makes it difficult for the conductive sheet 5 to shift or loosen after installation. In some embodiments, limiting blocks 54 are also provided on both sides of the mounting portion 53. The limiting blocks 54 extend toward the body of the conductive sheet 5, so that the mounting portion 53 can be smoothly inserted into the mounting hole 62, but will be restricted by the limiting blocks 54 when pulled out, thereby ensuring that during the use of the equipment, even if subjected to external forces such as vibration and impact, the conductive sheet 5 can remain in the predetermined position, maintain good contact with the connector 3 and the conductive sleeve 7, and maintain the integrity of the electrostatic protection structure.
[0033] Furthermore, in one embodiment of this utility model, please refer to... Figure 2 The bracket 6 has two spaced-apart limiting protrusions 63, and the connector 3 is located between the two limiting protrusions 63. The two spaced-apart limiting protrusions 63 provide a precise installation position for the connector 3. The connector 3 is located between the two limiting protrusions 63, and its position is effectively defined, ensuring accurate relative positioning between the connector 3, the conductive sheet 5, and the electrical interface 4. This precise positioning method helps improve the assembly accuracy of the anti-static structure 100, ensures the stability and reliability of the electrostatic conduction path, and provides a solid foundation for effective electrostatic conduction and protection.
[0034] To ensure the contact stability of the conductive sheet 5, in one embodiment of this utility model, please refer to... Figure 3 The bracket 6 has a mounting groove; the anti-static structure 100 also includes an elastic layer 8, which is disposed in the mounting groove and elastically abuts against the conductive sheet 5. Thus, after assembly, the elastic layer 8 provides elasticity to the conductive sheet 5, ensuring that the conductive sheet 5 remains tightly fitted to the conductive part 31 of the connector 3 and the inner wall of the conductive sleeve 7. During equipment use, even under external forces such as vibration and impact, the conductive sheet 5 will not easily loosen or detach, ensuring the stability and reliability of the electrostatic conduction path, effectively preventing interruption or accumulation of static electricity during transmission, and better protecting the circuit board 2 from electrostatic damage.
[0035] This utility model also proposes an electronic product, which includes the above-mentioned antistatic structure 100. The specific structure of the antistatic structure 100 is as described in the above embodiments. Since this electronic product adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0036] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. An antistatic structure, characterized in that, include: case; A circuit assembly, comprising a circuit board, a connector, and an electrical interface, wherein the circuit board is disposed within the housing, the electrical interface is exposed within the housing, the connector connects the circuit board and the electrical interface, and the connector has a conductive portion; and A conductive sheet is disposed between the connector and the inner wall of the housing, and is in contact with the conductive part and the inner wall of the housing.
2. The antistatic structure as described in claim 1, characterized in that, The conductive sheet has at least one first protrusion on the side facing the conductive portion, and each first protrusion abuts against the conductive portion.
3. The antistatic structure as described in claim 1, characterized in that, At least one second protrusion is formed on the side of the conductive sheet facing the inner wall of the housing, and each second protrusion abuts against the inner wall of the housing.
4. The antistatic structure as described in any one of claims 1 to 3, characterized in that, The antistatic structure also includes a bracket, which is located inside the housing. The connector is located on the bracket, and the circuit board and the electrical interface are located at opposite ends of the bracket.
5. The antistatic structure as described in claim 4, characterized in that, The antistatic structure also includes a conductive sleeve, which is sleeved on the bracket. The conductive sheet is disposed between the connector and the inner wall of the conductive sleeve and contacts the conductive part and the inner wall of the conductive sleeve. The outer wall of the conductive sleeve contacts the inner wall of the housing.
6. The antistatic structure as described in claim 5, characterized in that, The bracket is provided with a positioning protrusion; The conductive sleeve has a positioning groove, and the positioning protrusion is engaged with the positioning groove.
7. The antistatic structure as described in claim 4, characterized in that, The bracket has mounting holes; The conductive sheet has a mounting portion, which is inserted into the mounting hole for positioning.
8. The antistatic structure as described in claim 4, characterized in that, The bracket has two spaced-apart limiting protrusions, and the connector is located between the two limiting protrusions.
9. The antistatic structure as described in claim 4, characterized in that, The bracket has a mounting groove; The antistatic structure also includes an elastic layer, which is disposed in the mounting groove and elastically abuts against the conductive sheet.
10. An electronic product, characterized in that, Includes the antistatic structure as described in any one of claims 1 to 9.