An electromagnetic shielding seam connection device based on a closed core rivet

Abstract

The utility model discloses a kind of electromagnetic shielding seam connecting devices based on closed core-pulling rivet, it is related to electromagnetic shielding technical field.The utility model includes first metal plate, first metal plate side is provided with second metal plate, and first metal plate top is provided with core-pulling rivet body.The utility model rivets by using closed core-pulling rivet body, avoid the high energy consumption and environmental pollution problem needed in traditional welding process.Riveting process does not need welding equipment and professional technician, simple and quick operation meets the requirement of energy saving and environmental protection, through the riveting process of closed core-pulling rivet body, the close contact between first metal plate and second metal plate is ensured, electromagnetic leakage is effectively prevented.Core-pulling rivet body end closed design, further enhance electromagnetic shielding effect, prevent water and air from entering, realize electromagnetic sealing and environmental sealing function, ensure long-term stable shielding performance.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic shielding technology, and in particular relates to an electromagnetic shielding joint connection device based on a closed-type pull-out rivet. Background Technology

[0002] A joint is an area in construction, engineering, and manufacturing where two or more components, materials, or parts come into contact or are connected. The treatment of joints directly affects the stability, durability, and aesthetics of a structure. In particular, the shielding treatment at the joint is crucial. To avoid or reduce electromagnetic leakage at the joint, electromagnetic shielding joint connection devices are used to connect the materials.

[0003] Existing electromagnetic shielding joint connection devices mostly use welding and splicing methods to connect materials in order to achieve electromagnetic shielding at the joints, but both have shortcomings:

[0004] (1) Welding requires welding equipment and professional technicians, which makes it difficult to meet the requirements of energy saving, environmental protection and high efficiency. It is costly, has poor safety, and the quality of welding cannot be guaranteed.

[0005] (2) When splicing, screws are used in conjunction with conductive pads. This is a traditional shielding connection process. Its shock resistance is weak. After long-term use, the gaps are prone to oxidation, the contact resistance increases, the shielding effectiveness decreases, maintenance is difficult, and it cannot guarantee long-term reliable and stable shielding performance. Its service life is limited by this.

[0006] To address these issues, we provide an electromagnetic shielding joint connection device based on a closed-type blind rivet. Utility Model Content

[0007] The purpose of this invention is to provide an electromagnetic shielding joint connection device based on a closed-type blind rivet. By cooperating with the blind rivet body and the first metal plate, it solves the problem that existing electromagnetic shielding joint connection devices rely on welding and splicing for electromagnetic shielding, resulting in high operational difficulty and short shielding time.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0009] This utility model is an electromagnetic shielding joint connection device based on a closed-type blind rivet, including a first metal plate, a second metal plate disposed on one side of the first metal plate, and a blind rivet body disposed on the top of the first metal plate.

[0010] The present invention is further configured such that the first metal plate and the second metal plate are connected by a riveting process through a blind rivet body, and the end of the blind rivet body is closed.

[0011] The present invention is further configured such that the diameter of the core-pulling rivet body is 4mm, 5mm or 6.4mm, and its length is selected according to the thickness of the first metal plate and the second metal plate.

[0012] The present invention is further configured such that the core-pulling rivet bodies are staggered in two or more rows on the surfaces of the first metal plate and the second metal plate, with a spacing of 20mm, 30mm or 40mm.

[0013] The present invention is further configured such that the body of the pull rivet is made of aluminum or stainless steel, and the surfaces of the first metal plate and the second metal plate are provided with rivet holes.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model utilizes a closed-type blind rivet body for riveting, avoiding the high energy consumption and environmental pollution problems associated with traditional welding processes. The riveting process requires no welding equipment or specialized technicians, is simple and quick to operate, and meets energy-saving and environmental protection requirements. The closed-type blind rivet body ensures tight contact between the first and second metal plates, effectively preventing electromagnetic leakage. The closed end design of the blind rivet body further enhances the electromagnetic shielding effect, preventing water and air from entering, achieving electromagnetic sealing and environmental sealing functions, and ensuring long-term stable shielding performance.

[0016] 2. This utility model employs a riveting process, which provides high bonding strength and vibration resistance, ensuring the robustness and stability of the connection device. Compared to traditional screw connections, riveting is less prone to loosening and maintains good shielding effectiveness even after prolonged use, extending the device's lifespan. The riveting process is simple to operate, requiring no professional installation, thus reducing labor costs. Furthermore, the material cost of riveting is lower, and it eliminates the need for additional conductive gaskets, further reducing overall costs. It is suitable not only for specialized locations such as electromagnetic shielding rooms and anechoic chambers, but also for a wide range of shielding applications, including secure cabinets, shielded shelters, communication enclosures, and cabinets, demonstrating broad application value. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a diagram showing the overlapping state of the first and second metal plates in an electromagnetic shielding joint connection device based on a closed-type blind rivet, as described in Example 1.

[0019] Figure 2 This is a schematic diagram of the distribution of the core-pulling rivet body in Example 1.

[0020] Figure 3 This is a diagram showing the splicing state of the first metal plate and the second metal plate in an electromagnetic shielding joint connection device based on a closed-type blind rivet, as described in Example 2.

[0021] Figure 4 This is a schematic diagram of the distribution of the core-pulling rivet body in Example 2.

[0022] In the attached diagram: 1. First metal plate; 2. Second metal plate; 3. Body of the pop rivet. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] Please see Figures 1-2 This utility model is an electromagnetic shielding joint connection device based on a closed-type blind rivet, including a first metal plate 1, a second metal plate 2 disposed on one side of the first metal plate 1, and a blind rivet body 3 disposed on the top of the first metal plate 1.

[0026] Specifically: The blind rivet body 3 is a fastener commonly used for fixing and connecting, usually made of materials such as aluminum, steel, and stainless steel. It consists of a rivet body and a removable core rod, which is a mature existing technology. The first metal plate 1 and the second metal plate 2 are combined together by splicing or overlapping, with an overlap width between 30mm and 50mm.

[0027] Example 2

[0028] Please see Figures 3-4 Based on Embodiment 1, the first metal plate 1 and the second metal plate 2 are connected by a riveting process using a blind rivet body 3. The end of the blind rivet body 3 is closed. The diameter of the blind rivet body 3 is 4mm, 5mm or 6.4mm, and its length is selected according to the thickness of the first metal plate 1 and the second metal plate 2. The blind rivet bodies 3 are staggered in two or more rows on the surface of the first metal plate 1 and the second metal plate 2, with a spacing of 20mm, 30mm or 40mm. The material of the blind rivet body 3 is aluminum or stainless steel, and nail holes are opened on the surface of the first metal plate 1 and the second metal plate 2.

[0029] Specifically: Riveting is a process that permanently connects two or more parts using rivets. It is widely used in metal structures, construction and aerospace. Riveting utilizes the plastic deformation or destruction of the blind rivet body 3 to make the head of the blind rivet body 3 make close contact with the connected parts, thereby transferring the load. After connection, the rivet body 3 is not removable, but can be removed with a special tool. The riveting process achieves electromagnetic shielding. The end of the rivet body 3 is sealed to prevent water and air from entering, thus achieving electromagnetic sealing and environmental sealing. The rivet body 3 is selected with the optimal diameter to firmly fix the first metal plate 1 and the second metal plate 2. The rivet body 3 adopts a staggered double or multi-row arrangement to achieve a wide-band high attenuation shielding effect. When riveting the rivet body 3, the rivet holes are punched with a special tool, which has high precision and no cumulative error, realizing factory processing. The riveting process has many advantages: high bonding strength, firmness, vibration resistance, excellent stability, simple and quick operation, high efficiency and energy saving, lower cost, better performance, better meeting the requirements of shielding design, stable performance, long service life and maintenance-free, etc., and it overcomes the various drawbacks and defects of welding and screwing. The core-pulling rivet body 3 can be used in specific environments, especially where it is inconvenient or impossible to use traditional bolts and nuts. Meanwhile, the riveting process has a wide range of applications, not only suitable for electromagnetic shielding rooms and anechoic chambers, but also for all products with shielding requirements, such as secure cabinets, shielded shelters, communication enclosures and cabinets, etc., making it highly valuable for widespread application. In addition, the riveting process can be used in traditional shielding structures, for patented corrugated boards, and for metal-faced sandwich integrated composite panels, further highlighting its advantages. Its shielding performance fully meets the design requirements of MRI shielding rooms, high-voltage test shielding halls, military anechoic chambers, and secure shielded equipment rooms, offering excellent cost-effectiveness. Installation can be performed without professional personnel, truly achieving de-professionalization.

[0030] The working principle of this utility model is as follows: First, several first metal plates 1 and second metal plates 2 are combined together by splicing or overlapping to form multiple shielding templates. The overlap width is usually between 30mm and 50mm to ensure sufficient contact area.

[0031] Special tools are used to drill nail holes at predetermined positions on the first metal plate 1 and the second metal plate 2. The nail holes are highly precise with no cumulative error, ensuring the accuracy of subsequent riveting.

[0032] Based on the thickness of the first metal plate 1 and the second metal plate 2, select a blind rivet body 3 of appropriate length and diameter. Optimal diameters are typically 4mm, 5mm, and 6.4mm to ensure a secure fastening effect.

[0033] Using a rivet gun, install the blind rivet bodies 3 in the predetermined positions with optimal spacing, typically 20mm, 30mm, and 40mm, in staggered double or multiple rows. During installation, ensure that each blind rivet body 3 is securely fixed and that its end is in close contact with the material surface.

[0034] After installation, use a multimeter in resistance mode to measure the resistance at the gap between the first metal plate 1 and the second metal plate 2. If the resistance value is less than 0.1Ω, the shielding effect is satisfactory; if the resistance value does not meet the requirements, the number or density of the pull rivet body 3 needs to be increased to ensure that the shielding effectiveness requirements are met.

[0035] This achieves a highly efficient, stable, and long-lasting electromagnetic shielding effect, and is suitable for a variety of applications requiring shielding.

[0036] Several first metal plates 1 and second metal plates 2 are combined by splicing or overlapping to form multiple shielding templates. Nail holes are made using tools, and the optimal diameter of the blind rivet body 3 is selected. The appropriate length is selected according to the thickness of the first metal plate 1 and the second metal plate 2. The blind rivet body 3 is installed in the predetermined position with the optimal spacing and staggered arrangement using a rivet gun. After installation, it is ensured that each blind rivet body 3 is firmly fixed and that the end of the blind rivet body 3 is in close contact with the material surface.

[0037] After installation, use a multimeter in resistance mode to measure the resistance at the gap between the first metal plate 1 and the second metal plate 2. If the resistance value is less than 0.1, it meets the standard. Otherwise, it does not meet the electromagnetic shielding design requirements, and the number or density of the pull-core rivet body 3 needs to be increased to ensure that the shielding effectiveness requirements are met.

[0038] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. An electromagnetic shielding seam joining device based on a closed core rivet, comprising a first metal sheet (1), characterized in that: A second metal plate (2) is provided on one side of the first metal plate (1), and a blind rivet body (3) is provided on the top of the first metal plate (1). The first metal plate (1) and the second metal plate (2) are connected by a riveting process through the blind rivet body (3). The end of the blind rivet body (3) is closed. The diameter of the blind rivet body (3) is 4mm, 5mm or 6.4mm, and its length is selected according to the thickness of the first metal plate (1) and the second metal plate (2). The blind rivet bodies (3) are staggered in two or more rows on the surface of the first metal plate (1) and the second metal plate (2), and their spacing is 20mm, 30mm or 40mm.

2. An electromagnetic shielding seam joining device based on a closed core rivet according to claim 1, characterized in that: The core-pulling rivet body (3) is made of aluminum or stainless steel, and the first metal plate (1) and the second metal plate (2) have rivet holes on their surfaces.

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