Dustproof anti-interference network signal surge protection device

By using protective plates, sliding connections, limiting components and elastic block components in network signal surge protectors, combined with electromagnetic shielding coatings, the problem of insufficient dust protection and anti-interference capabilities of traditional equipment is solved, and a higher level of Equipment protection and service life are extended.

CN222464157UActive Publication Date: 2025-02-11ZHUHAI TELEHOF ELECTRICS CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
CN202421738443.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-23
Publication Date
2025-02-11
Estimated Expiration
2034-07-23

AI Technical Summary

Technical Problem

Traditional network signal surge protectors have shortcomings in dust protection and anti-interference capabilities, resulting in reduced thermal dissipation performance of the equipment and shortened service life, and are unable to effectively resist electromagnetic interference in complex modern network environments.

Method used

A dust-proof and anti-interference-type network signal surge protector is designed, using a protective plate symmetrically hinged on the shell, a sliding connection between the connecting component and the dust-proof component, a coordination between the limit component and the elastic block component, combined with electromagnetic shielding coating, Achieve effective protection against dust and electromagnetic interference.

Benefits of technology

Through the improved design, the equipment's dustproof and anti-interference capabilities are significantly improved, the service life is extended, the equipment's heat dissipation performance is enhanced, and the equipment provides higher protection effects in complex network environments.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222464157U_ABST
    Figure CN222464157U_ABST
Patent Text Reader

Abstract

The utility model discloses a dustproof anti-interference network signal surge protector, which relates to the technical field of surge protectors and comprises a protector body. Protective plates are symmetrically hinged to the upper end of the first shell and the lower end of the first shell, a plurality of heat dissipation holes are formed in the middles of the protective plates, connecting assemblies are fixedly connected to the upper portion of an inner cavity of the first shell and the lower portion of the inner cavity of the first shell, dustproof assemblies are slidably connected to inner cavities of the connecting assemblies, and limiting assemblies are symmetrically and fixedly connected to one sides of the upper portions of the connecting assemblies. The protective plates are symmetrically hinged to the upper end of the first shell and the lower end of the first shell, so that external impurities such as large-particle dust and insects can be prevented from entering an inner cavity of the first shell through the protective plates, and then meshes in the dustproof assembly are prevented from being blocked; therefore, the dustproof assembly can be conveniently pulled out of the inner cavity of the connecting assembly in a sliding mode, and then dust on the dustproof assembly can be conveniently cleaned or the dustproof assembly can be conveniently replaced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of surge protectors, in particular to a dustproof and anti-interference type network signal surge protector. Background Art

[0002] Network Signal Surge Protector (NSP) is a protective device designed to protect network communication equipment from transient overvoltage interference such as surge, overvoltage and lightning. In network communication systems, surges may be caused by various factors such as lightning strikes, power grid fluctuations, and equipment switching operations. If these transient overvoltages act directly on network equipment, they may damage it or even cause communication interruption. NSP uses built-in voltage limiting and discharge mechanisms to effectively guide surge energy to a safe place, thereby protecting the back-end network equipment from damage.

[0003] Although traditional network signal surge protectors have shown significant effects in protecting network equipment from surge interference, their design limitations cannot be ignored, especially in terms of dust and interference resistance. First, although network signal surge protectors are equipped with filters to prevent external impurities such as dust and insects from entering the equipment, these filters are prone to accumulate dust after long-term use, and are often difficult to clean and maintain due to their hidden locations or complex designs. This not only affects the appearance of the network signal surge protector, but more importantly, the accumulation of dust will seriously hinder the heat dissipation performance of the equipment, causing the internal temperature to rise, thereby accelerating the aging of components, shortening the service life of the network signal surge protector and affecting its performance stability. Secondly, in terms of interference resistance, although traditional network signal surge protectors can suppress surge interference to a certain extent, with the increasingly complex modern network environment and the emergence of various electromagnetic interference sources, traditional anti-interference designs have been difficult to meet the growing protection needs.

[0004] Chinese patent document CN221126283U discloses a network signal surge protector, comprising a protector body, a plurality of connection grooves are provided on the side surface of the protector body, a transverse groove is provided on the upper surface of the protector body, a mounting groove is provided inside the transverse groove at a position corresponding to the connection groove, a T-shaped extrusion rod is installed inside the mounting groove, a connection spring is fixedly installed on the surface of the extrusion rod, and one end of the connection spring is fixed inside the transverse groove; however, the following defects still exist in the implementation process:

[0005] Although the device in the above document can use the rebound force of the connecting spring to make the extrusion rod press against the surface of the wire, multiple wires can be operated in the same way without the help of tools, and the installation is very convenient, but the device in the above document can be further enhanced in terms of dust and interference resistance. Utility Model Content

[0006] The purpose of the utility model is to provide a dust-proof and anti-interference type network signal surge protector to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A dustproof and anti-interference type network signal surge protector comprises a protector body; a shell one is fixedly connected to the outer surface of the protector body, a protective plate is symmetrically hinged at the upper end and the lower end of the shell one, a plurality of heat dissipation holes are opened in the middle of the protective plate, a connecting component is fixedly connected to the upper part and the lower part of the inner cavity of the shell one, a dustproof component is slidably connected to the inner cavity of the connecting component, and a limiting component is symmetrically fixedly connected to one side of the upper part of the connecting component.

[0009] A further improvement of the technical solution of the utility model is that the connecting component includes a connecting block 1, which is fixedly connected to an inner cavity of an outer shell, and a connecting hole is symmetrically provided on one side of the connecting block 1 close to the dustproof component and extends through an end face of the connecting block 1 to the inner cavity of the connecting block 1.

[0010] The above technical solution is adopted, in which connecting holes are symmetrically opened, so that the position of the limiting component can be fixed and connected by using the connecting holes, and then when the dustproof component is slidingly connected with an inner cavity of the connecting block, the position of the dustproof component can be limited by the limiting component.

[0011] A further improvement of the technical solution of the utility model is that a spring block is symmetrically arranged on one side of the inner cavity of the connecting block away from the dustproof component, the spring block is used to buffer the impact force of the dustproof component sliding into the inner cavity of the connecting block, and the side of the spring block close to the outer shell is fixedly connected to the outer shell.

[0012] The above technical solution is adopted, in which a spring block is arranged in the inner cavity of the connecting block, so that the impact force of the dustproof component sliding into the inner cavity of the connecting block can be absorbed by the spring block, thereby reducing the impact of the dustproof component on the outer shell. Since the spring block itself has a spring, when the dustproof component slides in the inner cavity of the connecting block, a force is applied to the spring block, which then drives the spring block to contract. After the position limitation of the dustproof component is released, the spring block stretches by its own elastic force, and then pushes the dustproof component to move in a direction away from the spring block, thereby facilitating the sliding of the dustproof component out of the inner cavity of the connecting block.

[0013] A further improvement of the technical solution of the utility model is that the dustproof component includes a filter plate, a side of the filter plate away from the spring block is fixedly connected to a connecting block 2, the filter plate is slidably connected to the inner cavity of the connecting block 1, and a side of the connecting block 2 close to the limiting component is symmetrically provided with limiting holes for use with the limiting component.

[0014] The above-mentioned technical solution is adopted, in which a limiting hole is symmetrically opened on one side of the connecting block 2 close to the limiting component, so that the position of the filter plate can be limited by the cooperation of the limiting hole and the limiting component, thereby preventing the filter plate from slipping out of the inner cavity of the connecting block 1, thereby affecting the normal filtration of the filter plate.

[0015] A further improvement of the technical solution of the utility model is that the limiting component includes an outer shell two, the outer surface of the outer shell two with the same center is fixedly connected to the inner cavity of the connecting hole, the inner cavity of the outer shell two is slidably connected to an elastic block component used in conjunction with the limiting hole, and a threaded rod is threadedly connected to one side of the inner cavity of the outer shell two away from the elastic block component.

[0016] The above-mentioned technical solution is adopted, in which the outer shell 2 is rotatably connected to the threaded rod, so that the position of the threaded rod in the inner cavity of the outer shell 2 can be changed by rotating the threaded rod, and then the elastic block assembly is pushed to apply a force to the inner cavity of the limiting hole, and then the position of the dustproof assembly can be limited by utilizing the cooperation of the elastic block assembly and the limiting hole, and there is a twist handle on the threaded rod, so that the user can quickly disassemble and install the dustproof assembly without using tools.

[0017] A further improvement of the technical solution of the utility model is that the elastic block assembly includes a protrusion, a side of the protrusion close to the threaded rod is fixedly connected to a spring, a side of the spring away from the protrusion is fixedly connected to a connecting block three, and the connecting block three is rotatably connected to the inner cavity of the adjacent threaded rod.

[0018] The above-mentioned technical solution is adopted, in which the connecting block three is rotatably connected to the threaded rod, so that when the threaded rod rotates, there is no need to drive the elastic block assembly to rotate, but through the cooperation between the connecting block three and the threaded rod, when the threaded rod moves in the inner cavity of the shell two, it can drive the connecting block three to move together, so that the entire elastic block assembly can be driven to move through the connecting block three, and then the elastic block assembly can be driven to limit the position of the dustproof assembly.

[0019] A further improvement of the technical solution of the utility model is that: an outer surface of the shell and an outer surface of the protection plate are coated with electromagnetic shielding paint, and the electromagnetic shielding paint is made of epoxy resin material.

[0020] The above-mentioned technical scheme is adopted, in which an electromagnetic shielding coating is coated on an outer surface of the shell and an outer surface of the protective plate, so that a conductive layer can be formed on an outer surface of the shell and an outer surface of the protective plate using the electromagnetic shielding coating, thereby effectively shielding external electromagnetic interference and protecting internal electronic components from the influence of external electromagnetic signals. In addition, epoxy resin has good corrosion resistance to chemical substances such as acids, alkalis, and salts, and can protect the device from long-term use in harsh environments without damage.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a dustproof and anti-interference type network signal surge protector. A protective plate is symmetrically hinged at an upper end of a shell and a lower end of the shell, so that the protective plate can be used to prevent external impurities such as large dust particles and insects from entering an inner cavity of the shell, and then clogging the mesh holes on the dustproof component, thereby affecting the heat dissipation of the device. The connecting component is slidably connected to the dustproof component, so that the dustproof component can be slidably pulled out from the inner cavity of the connecting component, and then the dust on the dustproof component can be cleaned or the dustproof component can be replaced, so that the dustproof effect of the dustproof component can be further improved. The position of the dustproof component can be limited by the limit component, so that the user can quickly disassemble and install the dustproof component without using tools, thereby improving the dustproof effect of the device.

[0023] 2. The utility model provides a dustproof and anti-interference type network signal surge protector. By arranging a spring block in the inner cavity of a connecting block, the spring block can be used to absorb the impact force of the dustproof component when the dustproof component slides into the inner cavity of the connecting block, thereby reducing the impact of the dustproof component on the outer shell. On the other hand, when the dustproof component slides out of the inner cavity of the connecting block, the spring block stretches itself through its own elastic force, and then pushes the dustproof component to move away from the spring block, thereby facilitating the sliding of the dustproof component out of the inner cavity of the connecting block; by coating an electromagnetic shielding paint on the outer surface of the outer shell and the outer surface of the protective plate, the electromagnetic shielding paint can be used to form a conductive layer on the outer surface of the outer shell and the outer surface of the protective plate, thereby effectively shielding external electromagnetic interference and protecting internal electronic components from the influence of external electromagnetic signals, thereby improving the anti-interference ability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a front view of the overall structure of the utility model;

[0026] Figure 2 This is a rear view of the overall structure of the utility model;

[0027] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 4 It is a schematic diagram of the partial structure of the utility model;

[0029] Figure 5 It is a schematic diagram of the connection assembly of the utility model;

[0030] Figure 6 It is a schematic diagram of a partial housing of the utility model;

[0031] Figure 7 This is a schematic diagram of the dustproof component of the utility model;

[0032] Figure 8 It is a schematic diagram of the limit assembly of the utility model;

[0033] Fig. 9 This is a schematic diagram of the elastic block assembly of the utility model;

[0034] In the figure: 1. Protector body; 2. Shell 1; 3. Protective plate; 4. Connecting assembly; 41. Connecting block 1; 42. Connecting hole; 5. Dustproof assembly; 51. Filter plate; 52. Connecting block 2; 53. Limiting hole; 6. Limiting assembly; 61. Shell 2; 62. Elastic block assembly; 621. Protrusion; 622. Spring; 623. Connecting block 3; 63. Threaded rod; 7. Spring block. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the embodiments:

[0036] Example 1

[0037] like Figure 1-9 As shown, the utility model provides a dustproof and anti-interference type network signal surge protector, including a protector body 1; the outer surface of the protector body 1 is fixedly connected to a shell 2, the upper end of the shell 2 and the lower end of the shell 2 are symmetrically hinged with a protective plate 3, the middle part of the protective plate 3 is provided with a plurality of heat dissipation holes, the upper part of the inner cavity of the shell 2 and the lower part of the inner cavity of the shell 2 are fixedly connected with a connecting component 4, the inner cavity of the connecting component 4 is slidably connected with a dustproof component 5, and one side of the upper part of the connecting component 4 is symmetrically fixedly connected with a limiting component 6.

[0038] In this embodiment, a shell 2 is fixedly connected to the outer surface of the protector body 1, so that the protector body 1 can be protected by the shell 2, and a protective plate 3 is hinged at the upper end of the shell 2 and the lower end of the shell 2, so that the protective plate 3 can prevent larger particles of dust and external impurities such as insects from entering the inner cavity of the shell 2, and then clogging the mesh holes on the dustproof component 5, thereby affecting the heat dissipation of the device, and a connecting component 4 is fixedly connected to the inner cavity of the shell 2, so that the dustproof component 5 can be supported and connected by the connecting component 4, and then the position of the dustproof component 5 is limited by the limiting component 6, and the dustproof component 5 can prevent dust from entering the interior of the device and causing damage to the electronic components inside the device, thereby affecting the normal use of the device.

[0039] Example 2

[0040] like Figure 8 , Fig. 9 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the limiting component 6 includes a second shell 61, the outer surface of the second shell 61 with the same center is fixedly connected to the inner cavity of the connecting hole 42, the inner cavity of the second shell 61 is slidably connected with an elastic block component 62 used in conjunction with the limiting hole 53, the inner cavity of the second shell 61 away from the elastic block component 62 is threadedly connected with a threaded rod 63, the elastic block component 62 includes a protrusion 621, the side of the protrusion 621 close to the threaded rod 63 is fixedly connected with a spring 622, the side of the spring 622 away from the protrusion 621 is fixedly connected with a connecting block three 623, and the connecting block three 623 is rotatably connected to the inner cavity of the adjacent threaded rod 63.

[0041] In this embodiment, when the dust on the dustproof component 5 needs to be cleaned, or the dustproof component 5 needs to be replaced, first, the position limit between the two protective plates 3 is released, and then the protective plates 3 are flipped outward to release the obstruction to the inner cavity of the shell 1 2, and then the user rotates the threaded rod 63 clockwise to drive the threaded rod 63 to move in the inner cavity of the shell 2 61 toward the side away from the limiting hole 53, and then the threaded rod 63 can be used to drive the connecting block three 623 to move toward the side away from the limiting hole 53, and then the connecting block three 623 can be used to drive the spring 622 and the protrusion 621 to move together, and then the entire elastic block assembly 62 will be driven to move in the inner cavity of the shell 2 61 toward the side away from the limiting hole 53, and then the protrusion 621 will no longer be released from the inner cavity of the limiting hole 53, and then the elastic block assembly 62 will release the position limit on the dustproof component 5.

[0042] Example 3

[0043] like Figure 5 , Figure 6 , Figure 7 As shown, on the basis of Example 2, the utility model provides a technical solution: preferably, the connecting component 4 includes a connecting block 41, the connecting block 41 is fixedly connected to the inner cavity of the outer shell 2, and a connecting hole 42 that penetrates the end surface of the connecting block 41 and extends to the inner cavity of the connecting block 41 is symmetrically opened on the side of the connecting block 41 close to the dustproof component 5, and a spring block 7 is symmetrically arranged on the side of the inner cavity of the connecting block 41 away from the dustproof component 5. The spring block 7 is used to buffer the impact force of the dustproof component 5 sliding into the inner cavity of the connecting block 41, and the side of the spring block 7 close to the outer shell 2 is fixedly connected to the outer shell 2, the dustproof component 5 includes a filter plate 51, and the side of the filter plate 51 away from the spring block 7 is fixedly connected to the outer shell 2, the filter plate 51 is slidably connected to the inner cavity of the connecting block 41, and the side of the connecting block 2 52 close to the limit component 6 is symmetrically opened with a limit hole 53 used in conjunction with the limit component 6.

[0044] In this embodiment, under the action of the spring block 7's own elastic force, the spring block 7 will be driven to extend, and then the dustproof component 5 will be pushed to move in the direction away from the spring block 7, and then the dustproof component 5 will slide in the inner cavity of the connecting block 41, so as to facilitate the sliding and removal of the dustproof component 5 from the inner cavity of the connecting block 41, and then the user can clean the dust on the dustproof component 5, or replace the dustproof component 5, and then slide the cleaned dustproof component 5 or the replaced dustproof component 5 into the inner cavity of the connecting block 41, and then by rotating the threaded rod 63 counterclockwise, the threaded rod 63 is used to drive the elastic block component 62 to reset, and then the position of the dustproof component 5 can be limited by the cooperation of the elastic block component 62 and the limiting hole 53, and then the protective plate 3 is flipped inward to reset, and then the two protective plates 3 are limited by the cooperation of bolts and nuts, and the cooperation between the protective plate 3 and the dustproof component 5 can prevent external dust from entering the interior of the device and then causing damage to electronic components.

[0045] Example 4

[0046] like Figure 4 As shown, based on Example 1, the utility model provides a technical solution: preferably, the outer surface of the shell 2 and the outer surface of the protective plate 3 are coated with electromagnetic shielding paint, and the electromagnetic shielding paint is made of epoxy resin material.

[0047] In this embodiment, since electromagnetic shielding paint is coated on the outer surface of the shell 2 and the outer surface of the protective plate 3, the electromagnetic shielding paint can be used to form a conductive layer on the outer surface of the shell 2 and the outer surface of the protective plate 3, thereby effectively shielding external electromagnetic interference and protecting internal electronic components from the influence of external electromagnetic signals, thereby improving the anti-interference ability of the device.

[0048] The following is a detailed description of the working principle of this dust-proof and anti-interference network signal surge protector.

[0049] like Figure 1-9As shown, when the dust on the dustproof component 5 needs to be cleaned, or the dustproof component 5 needs to be replaced, first, the position limit between the two protective plates 3 is released, and then the protective plates 3 are flipped outward to release the obstruction to the inner cavity of the shell 1 2, and then the user rotates the threaded rod 63 clockwise to drive the threaded rod 63 to move in the inner cavity of the shell 2 61 toward the side away from the limiting hole 53, and then the threaded rod 63 can be used to drive the connecting block 3 623 to move toward the side away from the limiting hole 53, and then the connecting block 3 623 can be used to drive the spring 622 and the protrusion 621 to move together, and then the entire elastic block assembly 62 will be driven to move in the inner cavity of the shell 2 61 toward the side away from the limiting hole 53, and then the protrusion 621 will no longer be released from the inner cavity of the limiting hole 53, and then the elastic block assembly 62 will release the position limit of the dustproof component 5;

[0050] Under the elastic force of the spring block 7, the spring block 7 will be extended, and then the dustproof component 5 will be pushed to move in the direction away from the spring block 7, and then the dustproof component 5 will slide in the inner cavity of the connecting block 41, so as to facilitate the sliding and removal of the dustproof component 5 from the inner cavity of the connecting block 41, and then the user can clean the dust on the dustproof component 5, or replace the dustproof component 5, and then slide the dustproof component 5 that has been cleaned or the replaced dustproof component 5 into the inner cavity of the connecting block 41, and then by rotating the threaded rod 63 counterclockwise, the threaded rod 63 is used to drive the elastic block component 62 to reset, and then the elastic block component 62 and the limiting hole 53 are cooperated to limit the position of the dustproof component 5, and then the protective plate 3 is reset by flipping it inward, and then the two protective plates 3 are cooperated with bolts and nuts to limit the position of the two protective plates 3, and the cooperation between the protective plate 3 and the dustproof component 5 can prevent external dust from entering the device and causing damage to electronic components.

[0051] Since electromagnetic shielding paint is coated on the outer surface of the shell 2 and the outer surface of the protective plate 3, the electromagnetic shielding paint can be used to form a conductive layer on the outer surface of the shell 2 and the outer surface of the protective plate 3, thereby effectively shielding external electromagnetic interference and protecting internal electronic components from the influence of external electromagnetic signals, thereby improving the anti-interference ability of the device.

[0052] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A dust-proof and anti-interference network signal surge protector, comprising a protector body (1); characterized in that: The outer surface of the protector body (1) is fixedly connected to a shell (2); the upper end of the shell (2) and the lower end of the shell (2) are symmetrically hinged with a protective plate (3); a plurality of heat dissipation holes are provided in the middle of the protective plate (3); the upper part of the inner cavity of the shell (2) and the lower part of the inner cavity of the shell (2) are fixedly connected to a connecting component (4); the inner cavity of the connecting component (4) is slidably connected to a dustproof component (5); and one side of the upper part of the connecting component (4) is symmetrically fixedly connected to a limiting component (6).

2. The dust-proof and anti-interference network signal surge protector according to claim 1 is characterized in that: The connection assembly (4) comprises a connection block (41) fixedly connected to the inner cavity of the housing (2), and a connection hole (42) symmetrically provided on one side of the connection block (41) close to the dustproof assembly (5) and extending through the end surface of the connection block (41) to the inner cavity of the connection block (41).

3. The dust-proof and anti-interference network signal surge protector according to claim 2 is characterized in that: A spring block (7) is symmetrically arranged on one side of the inner cavity of the connecting block 1 (41) away from the dustproof component (5), and the spring block (7) is used to buffer the impact force of the dustproof component (5) sliding into the inner cavity of the connecting block 1 (41), and the side of the spring block (7) close to the outer shell 1 (2) is fixedly connected to the outer shell 1 (2).

4. The dust-proof and anti-interference network signal surge protector according to claim 3 is characterized in that: The dustproof component (5) comprises a filter plate (51), a side of the filter plate (51) away from the spring block (7) is fixedly connected to a second connection block (52), the filter plate (51) is slidably connected to the inner cavity of the first connection block (41), and a side of the second connection block (52) close to the limit assembly (6) is symmetrically provided with a limit hole (53) for use with the limit assembly (6).

5. The dust-proof and anti-interference network signal surge protector according to claim 2, characterized in that: The limiting assembly (6) comprises a second shell (61), the outer surface of the second shell (61) having the same center is fixedly connected to the inner cavity of the connecting hole (42), the inner cavity of the second shell (61) is slidably connected to an elastic block assembly (62) used in conjunction with the limiting hole (53), and a threaded rod (63) is threadedly connected to the side of the inner cavity of the second shell (61) away from the elastic block assembly (62).

6. The dust-proof and anti-interference network signal surge protector according to claim 5, characterized in that: The elastic block assembly (62) comprises a protrusion (621), a side of the protrusion (621) close to the threaded rod (63) is fixedly connected to a spring (622), a side of the spring (622) away from the protrusion (621) is fixedly connected to a connecting block three (623), and the connecting block three (623) is rotatably connected to the inner cavity of the adjacent threaded rod (63).

7. The dust-proof and anti-interference network signal surge protector according to claim 1, characterized in that: The outer surface of the shell 1 (2) and the outer surface of the protective plate (3) are both coated with electromagnetic shielding paint, and the electromagnetic shielding paint is made of epoxy resin material.

Citation Information

Patent Citations

  • Network signal surge protection device

    CN221126283U