Conductive foam with stable connection

Abstract

This utility model relates to the field of conductive foam technology, specifically a stable conductive foam, comprising conductive cotton, a conductive cloth sleeved on the outer side of the conductive cotton, and a conductive adhesive sheet fixed to the bottom of the conductive cotton. Conductive adhesive sheets are also provided at the four corners of the bottom of the conductive cotton. The beneficial effect is that by setting the conductive adhesive sheet at the center of the bottom of the conductive cotton and the conductive adhesive sheets at the four corners, multi-point bonding and fixation are achieved at the center and four corners of the bottom of the conductive cotton. This multi-point bonding method can effectively disperse the vibration and stress generated during equipment operation, avoid loosening of the bonded parts due to stress concentration, and greatly improve the bonding strength between the conductive foam and the mounting surface.

Description

Technical Field

[0001] This utility model relates to the field of conductive foam, specifically a conductive foam with a stable connection. Background Technology

[0002] In electronic and communication equipment, conductive foam is widely used as an important electromagnetic shielding and conductive connection material for component connections and gap filling within devices to achieve good electromagnetic shielding and electrical connection performance. However, traditional conductive foam has some significant problems during installation:

[0003] Insufficient adhesion: Traditional conductive foam typically only has a single conductive film at the center of the bottom for bonding and fixation. During equipment operation, factors such as vibration and temperature changes may affect the adhesion between the conductive foam and the mounting surface, causing it to gradually weaken, leading to loosening, displacement, or even detachment. This severely affects the electromagnetic shielding effect and electrical connection stability of the equipment.

[0004] Limited bonding area: The single-center bonding method results in a small contact area between the conductive foam and the mounting surface. Under external forces, stress concentration easily occurs at the bonding area, further reducing the reliability of the bond. In addition, the limited bonding area also restricts the conductive foam's adaptability to uneven mounting surfaces, making it difficult to guarantee a tight fit in various complex installation environments.

[0005] Low installation efficiency: In the actual installation process, if multiple parts of the conductive foam need to be individually bonded and fixed, the operation is cumbersome, which not only increases the installation time and labor costs, but also easily leads to inaccurate bonding positions due to improper operation, affecting the installation quality.

[0006] Given the aforementioned problems with traditional conductive foam, developing a more robust conductive foam is of significant practical importance. By optimizing the adhesive structure design of the conductive foam, improving the bonding strength and area between it and the mounting surface, problems such as loosening and displacement that occur during the installation of traditional conductive foam can be effectively solved. This ensures stable operation of equipment in various complex environments, improving equipment reliability and service life. Furthermore, the development of this new conductive foam also helps simplify the installation process, improve installation efficiency, and reduce production costs. Utility Model Content

[0007] The purpose of this invention is to provide a conductive foam with a stable connection to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a stable conductive foam, comprising conductive cotton, a conductive cloth sleeved on the outer side of the conductive cotton, and a conductive film one fixed to the bottom of the conductive cotton, wherein conductive films two are provided at the four corners of the bottom of the conductive cotton.

[0009] Preferably, the conductive cloth is in the shape of a "C" strip, the long side of the conductive cloth is equal to the long side of the conductive cotton, and the conductive film is located in the groove between the two ends of the conductive cloth.

[0010] Preferably, the thickness of the first conductive film is greater than the thickness of the conductive cloth, the bottom of the first conductive film is covered with a release paper sheet, and release paper extension strips are integrally formed at the four corners of the side groove, and the release paper extension strips cover the second conductive film.

[0011] Preferably, the conductive cloth has side grooves at the four corners of the bottom surface, the side grooves are "L" shaped, the conductive film is "L" shaped, the conductive film penetrates through the side grooves, and the thickness of the conductive film is greater than the thickness of the conductive cloth.

[0012] Preferably, the release paper extension strip is L-shaped.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention proposes a robust conductive foam connection. A conductive film (first layer) is positioned at the center of the bottom of the conductive foam, while conductive films (second layer) are positioned at the four corners, achieving multi-point bonding and fixation at the center and four corners. This multi-point bonding method effectively disperses vibrations and stresses generated during equipment operation, preventing loosening of the bonded areas due to stress concentration, and significantly improving the adhesion between the conductive foam and the mounting surface. The thickness of both conductive films (first and second layers) is greater than that of the conductive cloth, allowing for a tighter contact between the conductive films and the mounting surface, enhancing adhesion. Under external forces, the thicker conductive films better buffer stress, reducing deformation at the bonded areas and further ensuring bonding stability. Attached Figure Description

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

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

[0017] Figure 3 This is a schematic diagram of the connection structure between the release paper sheet and the release paper extension strip of this utility model;

[0018] Figure 4 This is a schematic diagram of the conductive cloth structure of this utility model.

[0019] In the diagram: 1. Conductive cotton; 2. Conductive cloth; 3. Conductive film one; 4. Side groove; 5. Conductive film two; 6. Release paper sheet; 7. Release paper extension strip. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-4 This utility model provides a technical solution: a stable conductive foam, including conductive cotton 1, a conductive cloth 2 sleeved on the outside of the conductive cotton 1, and a conductive adhesive sheet 3 fixed to the bottom of the conductive cotton 1. The conductive cloth 2 is a "C"-shaped strip, and the long side of the conductive cloth 2 is equal to the long side of the conductive cotton 1. The conductive adhesive sheet 3 is located in a groove between the two ends of the conductive cloth 2. The thickness of the conductive adhesive sheet 3 is greater than the thickness of the conductive cloth 2, and the bottom of the conductive adhesive sheet 3 is covered with a release paper 6. After removing the release paper 6 from under the conductive adhesive sheet 3, the conductive cotton 1 can be adhered to the desired installation position through the conductive adhesive sheet 3.

[0022] The conductive cotton 1 has conductive adhesive sheets 5 at each of its four bottom corners; release paper extension strips 7 are integrally formed at each of the four corners of the side groove 4, covering the conductive adhesive sheets 5; the conductive cloth 2 has side grooves 4 at each of its four bottom corners, the side grooves 4 are "L" shaped grooves, the conductive adhesive sheets 5 are "L" shaped pieces, the conductive adhesive sheets 5 penetrate the side grooves 4, and the thickness of the conductive adhesive sheets 5 is greater than the thickness of the conductive cloth 2; the release paper extension strips 7 are "L" shaped strips. When the release paper sheet 6 is removed, the release paper sheet 6 also removes the release paper extension strips 7 from below the conductive cloth 2, at which point the conductive adhesive sheets 5 are exposed. When the conductive adhesive sheet 3 is removed from the surface to be installed, the conductive adhesive sheet 5 also adheres to the surface to be installed, thus achieving that the bottom center of the conductive cotton 1 and the four bottom corners of the conductive cotton 1 are all bonded and fixed, thereby improving the firmness of the conductive cotton 1 after installation.

[0023] Instructions for using the securely connected conductive foam: Based on actual needs, determine the specific location where the conductive foam needs to be installed. Ensure the surface of this location is flat, clean, and free of dust, oil, or other impurities to ensure good adhesion of the conductive film. Prepare the tools needed to remove the release paper, such as tweezers (used to assist in removing the release paper and avoid direct contact with the film by fingers, which may affect adhesion; not strictly necessary but recommended). Holding the conductive foam, use the release paper 6 at the bottom of the conductive foam 1 as the starting point. Gently pinch one corner of the release paper 6 with your fingers or tweezers and slowly and steadily peel it upwards. During the peeling process, maintain even pressure to avoid deforming or damaging the conductive film 3 due to excessive force. Since the release paper 6 is connected to the release paper extension strip 7, removing the release paper 6 will simultaneously pull the release paper extension strip 7 away from under the conductive cloth 2. The release paper extension strip 7 covers the conductive film 5; after removal, the conductive film 5 will be exposed. After removing the release paper, place the conductive foam in the predetermined installation position, ensuring that the bottom of conductive foam 1 is tightly fitted to the mounting surface. During placement, carefully adjust the position of the conductive foam to ensure accurate alignment with the installation position and avoid misalignment. Apply even pressure to the center of the bottom of conductive foam 1 (i.e., where conductive film 3 is located) with your palm or a suitable tool, pressing for 3-5 seconds to ensure full adhesion between conductive film 3 and the mounting surface. While pressing the center of the bottom of conductive foam 1, apply appropriate pressure to the four corners of the bottom of conductive foam 1 (i.e., where conductive film 5 is located) with your fingers, also for 3-5 seconds, to ensure tight adhesion between conductive film 5 and the mounting surface. By fixing the center and corners simultaneously, the center and four corners of the bottom of conductive foam 1 are firmly bonded, greatly improving the stability of the conductive foam 1 after installation. After installation, gently shake the conductive foam to check if it is securely installed and if there is any loosening or displacement. If the conductive foam shows signs of loosening, the conductive film must be removed (if the film's adhesion is unaffected), and the foam should be reinstalled following the steps described above. Check conductivity: Use appropriate conductivity testing equipment to test the conductivity of the installed conductive foam to ensure it meets the usage requirements. If the conductivity is abnormal, investigate whether there were problems during installation or check the conductive foam itself for quality defects.

[0024] 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 stable conductive foam, comprising conductive cotton (1), conductive cloth (2) sleeved on the outer side of the conductive cotton (1), and a conductive film (3) fixed to the bottom of the conductive cotton (1), characterized in that: The conductive cotton (1) has conductive film two (5) at each of the four corners at the bottom.

2. The conductive foam with a stable connection according to claim 1, characterized in that: The conductive cloth (2) is in the shape of a "C" strip. The length of the long side of the conductive cloth (2) is equal to the length of the long side of the conductive cotton (1). The conductive film (3) is located in the groove between the two ends of the conductive cloth (2).

3. The conductive foam with a stable connection according to claim 1, characterized in that: The thickness of the first conductive film (3) is greater than the thickness of the conductive cloth (2). The bottom of the first conductive film (3) is covered with a release paper (6). The four corners of the side groove (4) are integrally formed with release paper extension strips (7), and the release paper extension strips (7) cover the second conductive film (5).

4. The conductive foam with a stable connection according to claim 1, characterized in that: The conductive cloth (2) has side grooves (4) at the four corners of the bottom surface. The side grooves (4) are "L" shaped grooves. The conductive film (5) is "L" shaped and passes through the side grooves (4). The thickness of the conductive film (5) is greater than the thickness of the conductive cloth (2).

5. The conductive foam with a stable connection according to claim 3, characterized in that: The release paper extension strip (7) is in the shape of an "L".

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