Novel conductive foam with high vibration resistance

Abstract

The utility model discloses a novel conductive foam with high vibration resistance, which comprises a connecting adhesive tape and conductive units, the conductive units are uniformly arranged on the connecting adhesive tape, each conductive unit comprises a foam mold with an inner cavity, the outer wall of each foam mold is covered with a conductive layer, two ends of each inner cavity are provided with folding clamp springs, and the folding clamp springs are connected with the connecting adhesive tape. A spring is arranged between every two adjacent folding clamping springs, bases are fixed to the two ends of each spring, positioning columns are fixed to the inner walls of the two ends of the inner cavity, and positioning grooves matched with the positioning columns are formed in the ends of the bases. According to the folding clamp spring, the foam mold, the conductive layer, the inner cavity, the base, the spring, the positioning column and the positioning groove are arranged, the spring is prevented from shifting, the foam mold is prevented from seriously deforming, the limiting column is arranged to limit the deformation degree of the folding clamp spring, the service life of the folding clamp spring can be prolonged, the folding clamp spring can be prevented from extruding the base, and the service life of the folding clamp spring is prolonged. And excessive deformation of the foam mold can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of conductive foam technology, and in particular to a novel conductive foam with high vibration resistance. Background Technology

[0002] Conductive foam is a flame-retardant sponge with a conductive cloth wrapped around its outer surface. It has good surface conductivity and can be easily fixed to devices requiring shielding using adhesive tape. Applying a layer of conductive foam to some components inside mobile terminals provides conductivity, anti-static properties, and reduces electromagnetic radiation. An existing patent (publication number: CN221486155U) discloses a vibration-resistant conductive foam structure. This invention incorporates a spring between the upper and lower end covers, providing vertical shock absorption. A rotating latch and connecting holes are used to assemble the upper and lower end covers. However, in practical applications, because the upper and lower end covers are not effectively connected to the foam mold, vibration can easily cause misalignment between the rebound device and the foam mold, leading to severe deformation of the foam mold and hindering practical use. Therefore, we propose a novel conductive foam with high vibration resistance. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a novel conductive foam with high vibration resistance.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A novel conductive foam with high vibration resistance is designed, comprising a connecting tape and conductive units. The conductive units are evenly arranged on the connecting tape. Each conductive unit includes a foam mold with an inner cavity. The outer wall of the foam mold is covered with a conductive layer. Folding springs are provided at both ends of the inner cavity. A spring is provided between adjacent folding springs. Bases are fixed at both ends of the springs. Positioning posts are fixed on the inner walls at both ends of the inner cavity. Positioning grooves that cooperate with the positioning posts are opened at the ends of the bases.

[0006] In the above scheme, the inner cavity is symmetrical at both ends and H-shaped, and foam blocks are filled in the middle of the upper and lower sides of the foam mold.

[0007] In the above scheme, the upper and lower ends of the folding snap ring abut against the inner walls of the inner cavity at both ends.

[0008] In the above scheme, two pairs of limiting posts are fixed on the inner walls at both ends of the inner cavity, and the limiting posts are located at the upper and lower ends of the folding snap ring, respectively.

[0009] In the above scheme, the base is inserted into the folding snap ring, the positioning post is coaxially provided with a locking ring, and the inner wall of the positioning groove is provided with a locking groove that cooperates with the locking ring.

[0010] In the above scheme, the folding spring is made of flame-retardant plastic.

[0011] In the above solution, the spring is covered with flame-retardant plastic.

[0012] The advantages and beneficial effects of this utility model are as follows: By setting up a foam mold, a conductive layer, an inner cavity, a base, a spring, a positioning post, and a positioning groove, the inner cavity provides space to install the spring. Combined with the positioning post and positioning groove, the base and the inner wall of the cavity are quickly positioned and connected. Compared with the prior art, the positioning post and positioning groove allow for a detachable connection between the base and the foam mold, achieving both effective connection of the spring and the foam mold and facilitating installation. Simultaneously, when the spring is subjected to vibration and impact, it prevents displacement within the inner cavity, preventing severe deformation of the foam mold and maintaining the integrity of the conductive layer. By setting limiting posts and folding springs, with two pairs of limiting posts respectively positioned at the upper and lower ends of the folding spring, when the folding spring is impacted from both sides, the limiting posts prevent excessive inward contraction of the folding spring, limiting its deformation. This not only extends the service life of the folding spring but also prevents it from squeezing the base, protecting the base. Furthermore, it effectively prevents excessive deformation of the foam mold, ensuring normal use. Attached Figure Description

[0013] 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 these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a novel conductive foam with high vibration resistance proposed in this utility model.

[0015] Figure 2 This is a partial cross-sectional view of the conductive unit of a novel conductive foam with high vibration resistance proposed in this utility model.

[0016] Figure 3 This is a cross-sectional view of a foam mold for a novel conductive foam with high vibration resistance proposed in this utility model.

[0017] In the diagram: 1. Connecting tape; 2. Conductive unit; 21. Foam mold; 22. Inner cavity; 23. Foam block; 24. Folding snap ring; 241. Limiting post; 25. Base; 251. Positioning post; 252. Locking ring; 253. Positioning groove; 254. Locking groove; 26. Spring; 27. Conductive layer. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a novel conductive foam with high vibration resistance, including a connecting tape 1 and conductive units 2. The conductive units 2 are uniformly disposed on the connecting tape 1 and arranged in an array on the connecting tape 1. The conductive units 2 include a foam mold 21 with an inner cavity 22.

[0020] Furthermore, such as Figure 2 As shown, the inner cavity 22 is symmetrical at both ends and H-shaped. Foam blocks 23 are filled in the middle of the upper and lower sides of the foam mold 21. The foam blocks 23 are harder than the foam mold 21, which improves the strength of the conductive unit 2. The foam mold 21 is fixed to the connecting tape 1.

[0021] The outer wall of the foam mold 21 is covered with a conductive layer 27, which is a conductive tape. Folding spring clips 24 are provided in the vertical areas at both ends of the inner cavity 22.

[0022] Furthermore, the folding retainer 24 is made of flame-retardant plastic, which not only improves the flame-retardant performance of the foam mold 21, but also ensures that the folding retainer 24 has good elasticity.

[0023] Furthermore, the upper and lower ends of the folding retainer 24 abut against the inner walls of the inner cavity 22 at both ends, so as to quickly position the folding retainer 24 and facilitate installation;

[0024] Furthermore, such as Figure 2 and Figure 3 As shown, the folding retaining spring 21 is W-shaped, providing good support for contraction and rebound. Two pairs of limiting posts 241 are fixed to the inner walls at both ends of the inner cavity 22. The limiting posts 241 are fixed to the inner walls of the inner cavity 22 by adhesive. The limiting posts 241 are located at the upper and lower ends of the folding retaining spring 24 respectively. The length of the limiting posts 241 is less than the thickness of the folding retaining spring 24. The limiting posts 241 are located on the upper and lower sides of the base 25 mentioned below to avoid interference with the base 25.

[0025] Specifically, by setting limit posts 241 and folding retaining springs 24, and by setting two pairs of limit posts 241 at the upper and lower ends of the folding retaining springs 24 respectively, when the folding retaining springs 24 are subjected to impacts from the upper and lower sides, the limit posts 241 prevent the folding retaining springs 24 from excessively contracting inward, and limit the degree of deformation of the folding retaining springs 24. This not only extends the service life of the folding retaining springs 24, but also prevents the folding retaining springs 24 from squeezing the base 25, thus protecting the base 25. In addition, it can also effectively prevent the foam mold 21 from excessively deforming, ensuring normal use.

[0026] A spring 26 is provided between adjacent folding snap rings 24, and a base 25 is fixed at both ends of the spring 26;

[0027] Furthermore, the spring 26 is covered with flame-retardant plastic. The flame-retardant plastic is applied to the spring 26 through processes such as injection molding, thereby improving the flame-retardant performance of the foam mold 21.

[0028] The inner walls at both ends of the inner cavity 22 are fixed with positioning posts 251, and the end of the base 25 is provided with positioning grooves 253 that cooperate with the positioning posts 251. The two are connected by splicing.

[0029] Furthermore, the base 25 is inserted into the folding snap ring 24, and a locking ring 252 protruding from the cylindrical surface of the positioning post 251 is coaxially fixed on the positioning post 251. The inner wall of the positioning groove 253 is provided with a locking groove 254 that cooperates with the locking ring 252. When the positioning post 251 and the positioning groove 253 are pre-connected, the locking ring 252 and the locking groove 254 can be locked by pressing the base 25 onto the positioning post 251, thereby improving the tightness of the connection between the base 25 and the inner cavity 22 and improving the structural stability.

[0030] Specifically, by setting up a foam mold 21, a conductive layer 27, an inner cavity 22, a base 25, a spring 26, a positioning post 251, and a positioning groove 253, the inner cavity 22 provides space to install the spring 26. With the help of the positioning post 251 and the positioning groove 253, the base 25 and the inner wall of the inner cavity 22 can be quickly positioned and connected. Compared with the prior art, the positioning post 251 and the positioning groove 253 make the base 25 and the foam mold 21 detachably connected, which not only achieves the purpose of effectively connecting the spring 26 and the foam mold 21, but also facilitates installation. At the same time, when the spring 26 is subjected to vibration and impact, it is prevented from shifting in the inner cavity 22, preventing the foam mold 21 from undergoing serious deformation and maintaining the integrity of the conductive layer 27.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel conductive foam with high vibration resistance, comprising a connecting tape (1) and a conductive unit (2), characterized in that, The conductive unit (2) is evenly disposed on the connecting tape (1). The conductive unit (2) includes a foam mold (21) with an inner cavity (22). The outer wall of the foam mold (21) is covered with a conductive layer (27). The inner cavity (22) has folding spring clips (24) at both ends. A spring (26) is provided between adjacent folding spring clips (24). The spring (26) has a base (25) fixed at both ends. The inner wall of the inner cavity (22) has a positioning post (251) fixed at both ends. The end of the base (25) has a positioning groove (253) that cooperates with the positioning post (251).

2. The novel conductive foam with high vibration resistance according to claim 1, characterized in that, The inner cavity (22) is symmetrical at both ends and H-shaped, and foam blocks (23) are filled in the middle of the upper and lower sides of the foam mold (21).

3. The novel conductive foam with high vibration resistance according to claim 2, characterized in that, The upper and lower ends of the folding snap ring (24) abut against the inner walls of the two ends of the inner cavity (22).

4. A novel conductive foam with high vibration resistance according to claim 2, characterized in that, The inner walls at both ends of the inner cavity (22) are fixed with two pairs of limiting posts (241), which are located at the upper and lower ends of the folding spring (24) respectively, and the base (25) is located between the two pairs of limiting posts (241).

5. A novel conductive foam with high vibration resistance according to claim 1, characterized in that, The base (25) is inserted into the folding snap ring (24), and a locking ring (252) is coaxially provided on the positioning post (251). The inner wall of the positioning groove (253) is provided with a locking groove (254) that cooperates with the locking ring (252).

6. The novel conductive foam with high vibration resistance according to claim 1, characterized in that, The folding snap ring (24) is made of flame-retardant plastic.

7. A novel conductive foam with high vibration resistance according to claim 1, characterized in that, The spring (26) is covered with flame-retardant plastic.

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