Electromagnetic shielding seam connecting device based on closed type self-plugging rivet

Abstract

The invention discloses an electromagnetic shielding seam connecting device based on a closed type self-plugging rivet, and relates to the technical field of electromagnetic shielding. The self-plugging rivet comprises a first metal plate, a second metal plate is arranged on one side of the first metal plate, and a self-plugging rivet body is arranged at the top of the first metal plate. Riveting is conducted through the closed type self-plugging rivet body, and the problems of high energy consumption and environmental pollution needed in a traditional welding process are solved. Welding equipment and professional technicians are not needed in the riveting process, operation is easy and fast, the energy-saving and environment-friendly requirements are met, tight contact between the first metal plate and the second metal plate is ensured through the riveting process of the closed type self-plugging rivet body, and electromagnetic leakage is effectively prevented. The tail end of the self-plugging rivet body is designed to be closed, so that the electromagnetic shielding effect is further enhanced, water and air are prevented from entering the self-plugging rivet, the functions of electromagnetic sealing and environment sealing are achieved, and the long-term stable shielding performance is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of electromagnetic shielding, and particularly relates to an electromagnetic shielding seam connection device based on a closed blind rivet. Background Art

[0002] A seam refers to the area where two or more components, materials, or parts come into contact or are connected in fields such as construction, engineering, and manufacturing. The treatment of seams directly affects the stability, durability, and aesthetics of the structure. In particular, the shielding treatment of seams is particularly important. In order to avoid or reduce electromagnetic leakage at the seams, an electromagnetic shielding seam connection device is used to connect the materials.

[0003] In the process of using the existing electromagnetic shielding seam connection devices, in order to perform electromagnetic shielding at the seams, welding and splicing are mostly used to connect the materials, both of which have deficiencies:

[0004] (1) Welding requires welding equipment and professional technicians, and it is difficult to meet the requirements of energy conservation, environmental protection, and high efficiency. The cost is high, the safety is poor, and the quality of welding cannot be guaranteed.

[0005] (2) When splicing, screws are used and conductive gaskets are cooperated. It is a traditional shielding connection process. Its seismic resistance is weak. After long-term use, the gap is prone to oxidation, the contact resistance increases, resulting in a decrease in shielding effectiveness, and the maintenance difficulty is large. It cannot ensure long-term reliable and stable shielding performance, and its service life is restricted by this.

[0006] Therefore, we provide an electromagnetic shielding seam connection device based on a closed blind rivet to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide an electromagnetic shielding seam connection device based on a closed blind rivet. Through the cooperation of the blind rivet body and the first metal plate, it solves the problems that the electromagnetic shielding seam connection device in the prior art relies on welding and splicing for electromagnetic shielding, resulting in high operation difficulty and short shielding time.

[0008] To solve the above technical problems, the present invention is realized through the following technical solutions.

[0009] The present invention is an electromagnetic shielding seam connection device based on a closed blind rivet, including a first metal plate. A second metal plate is arranged on one side of the first metal plate, and a blind rivet body is arranged on the top of the first metal plate.

[0010] The present invention is further arranged such that the first metal plate and the second metal plate are connected by a riveting process through the 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 blind rivet body is preferably 4 mm, 5 mm, and 6.4 mm, and its length is selected according to the thicknesses of the first metal plate and the second metal plate.

[0012] The present invention is further configured such that the blind rivet bodies are arranged in a staggered double row or multiple rows on the surfaces of the first metal plate and the second metal plate, and the spacing therebetween is preferably 20 mm, 30 mm, and 40 mm.

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

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

[0015] 1. By using the closed - type blind rivet body for riveting, the present invention avoids the high energy consumption and environmental pollution problems in the traditional welding process. The riveting process does not require welding equipment and professional technicians, is simple and fast to operate, meets the requirements of energy conservation and environmental protection. Through the riveting process of the closed - type blind rivet body, the close contact between the first metal plate and the second metal plate is ensured, effectively preventing electromagnetic leakage. The closed - end design of the blind rivet body further enhances the electromagnetic shielding effect, prevents water and air from entering, realizes the functions of electromagnetic sealing and environmental sealing, and ensures long - term stable shielding performance.

[0016] 2. By using the riveting process, the present invention has high bonding strength and anti - vibration ability, ensuring the firmness and stability of the connecting device. Compared with the traditional screw connection method, the riveting process is not easy to loosen, and can still maintain good shielding efficiency after long - term use, extending the service life of the device. The riveting process is simple to operate and does not require professionals for installation, reducing labor costs. At the same time, the material cost of the riveting process is low, and no additional conductive gaskets are required, further reducing the overall cost. It is not only applicable to professional places such as electromagnetic shielding rooms and anechoic chambers for shielding radio waves, but also can be widely applied to products with shielding requirements such as confidential cabinets, shielding shelters, communication chassis, and cabinets, and has wide popularization and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below.

[0018] Figure 1 It is a lap - joint state diagram of the first metal plate and the second metal plate in an electromagnetic shielding seam connection device based on a closed - type blind rivet.

[0019] Figure 2 It is a splicing state diagram of the first metal plate and the second metal plate in an electromagnetic shielding seam connection device based on a closed - type blind rivet.

[0020] In the accompanying drawings: 1. First metal plate; 2. Second metal plate; 3. Blind rivet body. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be described with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1

[0023] Please refer to Figure 1 - Figure 2 , the present invention is an electromagnetic shielding seam connection device based on a closed blind rivet, including a first metal plate 1, a second metal plate 2 is arranged on one side of the first metal plate 1, and a blind rivet body 3 is arranged on the top of the first metal plate 1.

[0024] 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 retractable core rod, which is an existing mature technology. The first metal plate 1 and the second metal plate 2 are combined together by splicing or overlapping, and the overlapping width is between 30 mm and 50 mm.

[0025] Embodiment 2

[0026] Please refer to Figure 1 - Figure 2 , on the basis of Embodiment 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 preferably 4 mm, 5 mm, and 6.4 mm. Its 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 arranged in a staggered double row or multiple rows on the surfaces of the first metal plate 1 and the second metal plate 2, and the spacing is preferably 20 mm, 30 mm, and 40 mm. The material of the blind rivet body 3 is aluminum or stainless steel. Nail holes are provided on the surfaces of the first metal plate 1 and the second metal plate 2.

[0027] Specifically: The riveting process is a process of permanently connecting two or more parts by rivets, which is widely used in fields such as metal structures, construction, and aerospace. Riveting utilizes the plastic deformation or destruction of the blind rivet body 3 to form close contact between the head of the blind rivet body 3 and the connected parts, thereby transmitting loads. After connection, the blind rivet body 3 is non-removable but can be removed by special tools. By means of the riveting process, the electromagnetic shielding function is achieved. The end of the blind rivet body 3 is closed to prevent water and air from entering, thereby realizing the functions of electromagnetic sealing and environmental sealing. The blind rivet body 3 is selected with the optimal diameter to firmly fix the first metal plate 1 and the second metal plate 2. The blind rivet body 3 is arranged in a staggered double-row or multi-row manner to obtain a shielding effect with wide-band high attenuation. When the blind rivet body 3 is riveted, the nail holes are punched by special tools with high precision and no cumulative error, realizing factory processing. The adopted riveting process has many advantages: high bonding strength, firmness, anti-vibration, excellent stability, simple and fast operation, high efficiency and energy saving, lower cost, better performance, more in line with the requirements of shielding design, stable performance, long life and maintenance-free, etc., and it overcomes various drawbacks and defects of welding and screwing. The blind rivet body 3 can be used in some specific environments, especially in places where it is inconvenient or impossible to use traditional bolts and nuts. At the same time, the riveting process has a wide range of applications, not only applicable to electromagnetic shielding rooms and anechoic chambers for shielding radio waves, but also applicable to all products with shielding requirements, such as confidential cabinets, shielding shelters, communication chassis and cabinets, etc., and has great value for popularization and application. In addition, the riveting process can be used for traditional shielding structures, for patented corrugated plates and metal-faced sandwich integrated composite plates, and its advantageous features are more prominent. Its shielding effectiveness fully meets the design requirements of MRI shielding rooms, high-voltage test shielding halls, military anechoic chambers and confidential shielding computer rooms, etc., with excellent cost performance, and can be installed without professional personnel operation, truly de-specialized.

[0028] The working principle of the present invention is as follows: First, several first metal plates 1 and second metal plates 2 are combined together by splicing or lapping to form multiple shielding templates. The lapping width is usually between 30 mm and 50 mm to ensure sufficient contact area.

[0029] Use special tools to open nail holes at the predetermined positions of the first metal plate 1 and the second metal plate 2. The nail holes have high precision and no cumulative error, ensuring the accuracy of subsequent riveting.

[0030] According to the thicknesses of the first metal plate 1 and the second metal plate 2, select a blind rivet body 3 with appropriate length and diameter. The optimal diameters are usually 4 mm, 5 mm, and 6.4 mm to ensure a firm fixing effect.

[0031] Use a riveting gun to install the blind rivet body 3 at a predetermined position in a staggered double-row or multi-row manner with an optimal spacing, usually 20mm, 30mm, and 40mm. During installation, ensure that each blind rivet body 3 is firmly fixed and its end is in close contact with the material surface.

[0032] After installation, use the resistance range of a multimeter 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, it indicates that the shielding effect meets the standard; if the resistance value does not meet the requirements, the number of rows or density of the blind rivet body 3 needs to be increased to ensure that the shielding efficiency requirements are met.

[0033] In this way, an efficient, stable, and long-lasting electromagnetic shielding effect is achieved, and it is applicable to various application scenarios with shielding requirements.

[0034] Combine several first metal plates 1 and second metal plates 2 together by splicing or lapping to form multiple shielding templates, and use tools to create rivet holes. Select the blind rivet body 3 with the optimal diameter and select an appropriate length according to the thickness of the first metal plate 1 and the second metal plate 2. Use a riveting gun to install the blind rivet body 3 at a predetermined position in a staggered double-row or multi-row manner with an optimal spacing. After installation, ensure that each blind rivet body 3 is firmly fixed and the end of the blind rivet body 3 is in close contact with the material surface.

[0035] After installation, use the resistance range of a multimeter 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 cannot meet the electromagnetic shielding design requirements, and the number of rows or density of the blind rivet body 3 needs to be increased to ensure that the shielding efficiency requirements are met.

[0036] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not elaborate on all details and do not limit the invention to the specific embodiments described. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention.

Claims

1. An electromagnetic shielding seam connection device based on a closed-type blind rivet, comprising a first metal plate (1), characterized in that: A second metal plate (2) is arranged on one side of the first metal plate (1), and a blind rivet body (3) is arranged on the top of the first metal plate (1).

2. According to claim 1, an electromagnetic shielding seam connection device based on closed-type blind rivets is characterized in that: The first metal plate (1) and the second metal plate (2) are connected by a blind rivet body (3) using a riveting process, and the end of the blind rivet body (3) is closed.

3. The electromagnetic shielding seam connection device based on closed-type blind rivets according to claim 1, characterized in that: The optimal diameters of the blind rivet body (3) are 4 mm, 5 mm and 6.4 mm, and its length is selected according to the thickness of the first metal plate (1) and the second metal plate (2).

4. The electromagnetic shielding seam connection device based on closed-type blind rivets according to claim 1, characterized in that: The blind rivet bodies (3) are arranged in double or multiple rows on the surfaces of the first metal plate (1) and the second metal plate (2), with the optimal spacing being 20 mm, 30 mm and 40 mm.

5. The electromagnetic shielding seam connection device based on closed-type blind rivets according to claim 1, characterized in that: The blind rivet body (3) is made of aluminum or stainless steel, and nail holes are provided on the surfaces of the first metal plate (1) and the second metal plate (2).

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