Elastic arched conductive foam

Abstract

The utility model discloses the technical field of electromagnetic shielding material's elastic arch back formula's conductive foam, including base, the upper surface between base respectively fixed connection has conductive foam body and elastic support layer, the inside surface of conductive foam body is provided with foam base, the outside surface of foam base is installed with conductive layer, the outside of conductive layer is provided with adhesive layer, the outside surface of adhesive layer is provided with protective coating, the inside of elastic support layer is located in the conductive foam body, the upper between base respectively symmetry is provided with vertical rod, through the arc spring strip and elastic skeleton of setting, the stability of conductive foam body after arc bending has been increased in entirety, and enough resilience has after long -term compression itself, and then increased contact pressure, improved shielding performance, convenient to adapt complex curved surface installation environment.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic shielding material technology, specifically relating to elastic arched conductive foam. Background Technology

[0002] Foam is a material made by foaming plastic particles. Foam is categorized into various types, including PU foam, antistatic foam, conductive foam, EPE, antistatic EPE, CR, EVA, cross-linked PE, SBR, and EPDM. Conductive foam refers to flame-retardant sponge wrapped with conductive cloth, which, after a series of treatments, achieves good surface conductivity and can be easily fixed to the device requiring shielding with adhesive tape. Shielding materials with different cross-sectional shapes, installation methods, UL ratings, and shielding effectiveness are available.

[0003] Most existing conductive foams adopt a planar structure, which results in insufficient contact area when installed on curved surfaces, leading to a decrease in shielding effectiveness. After long-term compression, the foam has poor resilience, weakened contact pressure, unstable shielding performance, and difficulty in adapting to complex curved surface installation environments, such as irregular joints and moving parts. Therefore, we propose an elastic arched conductive foam. Utility Model Content

[0004] The purpose of this invention is to provide an elastic, arched conductive foam to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elastic arched conductive foam, comprising a base, a conductive foam body and an elastic support layer fixedly connected between the upper surfaces of the base, a foam substrate disposed on the inner surface of the conductive foam body, a conductive layer installed on the outer surface of the foam substrate, an adhesive layer disposed on the outer side of the conductive layer, a protective coating disposed on the outer surface of the adhesive layer, the elastic support layer disposed on the inner side of the conductive foam body, uprights symmetrically disposed between the upper surfaces of the base, guide rods slidably passing through the inner side of the uprights, an arc-shaped spring strip connected between the guide rods, the arc-shaped spring strip disposed between the elastic support layer and the conductive foam body, and the inner surface of the conductive foam body and the surface of the arc-shaped spring strip being bonded and fixed.

[0006] Preferably, the outer side of the elastic support layer is connected to an arc-shaped elastic skeleton, and the two ends of the elastic skeleton are fixedly connected to the surface of the base.

[0007] Preferably, the surface of the arc-shaped spring strip is fixedly connected to the inner surface of the conductive foam body by a connector.

[0008] Preferably, the surface of the elastic skeleton and the surface of the arc-shaped spring strip are connected by a fixing buckle.

[0009] Preferably, the inner surface of the elastic support layer is provided with an insulating wrapping layer.

[0010] Preferably, a fixing block is fixedly installed at the bottom end of the upright, and the surface of the fixing block is provided with a positioning hole in an annular shape.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By using an arc-shaped spring strip and elastic skeleton, the overall stability of the conductive foam body is increased after arc bending, and it has sufficient resilience after long-term compression, thereby increasing contact pressure, improving shielding performance, and making it easier to adapt to complex curved surface installation environments.

[0012] 2. The fixed buckles and connectors increase the structural strength of the connection between the conductive foam body and the elastic support layer, extending its service life. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a side view of the present invention.

[0014] In the diagram: 1. Base; 2. Insulating wrapping layer; 3. Elastic support layer; 4. Upright pole; 5. Guide rod; 6. Arc-shaped spring strip; 7. Conductive foam body; 701. Foam substrate; 702. Conductive layer; 703. Adhesive layer; 704. Protective coating; 8. Connector; 9. Elastic frame; 10. Fixing buckle; 11. Fixing block; 12. Positioning hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3This utility model provides a technical solution: an elastic arched conductive foam, including a base 1, with a conductive foam body 7 and an elastic support layer 3 fixedly connected between the upper surfaces of the base 1, a foam substrate 701 provided on the inner surface of the conductive foam body 7, a conductive layer 702 installed on the outer surface of the foam substrate 701, an adhesive layer 703 provided on the outer surface of the conductive layer 702, a protective coating 704 provided on the outer surface of the adhesive layer 703, the elastic support layer 3 located on the inner side of the conductive foam body 7, uprights 4 symmetrically arranged above the base 1, guide rods 5 slidably passing through the inner side of the uprights 4, and arc-shaped spring strips 6 connected between the guide rods 5, the arc-shaped spring strips 6 located between the elastic support layer 3 and the conductive foam body 7, and the inner surface of the conductive foam body 7 and the surface of the arc-shaped spring strips 6 being bonded and fixed.

[0017] Specifically, an arc-shaped elastic frame 9 is connected to the outer side of the elastic support layer 3, and the two ends of the elastic frame 9 are fixedly connected to the surface of the base 1.

[0018] Specifically, the surface of the arc-shaped spring strip 6 is fixedly connected to the inner surface of the conductive foam body 7 through a connector 8.

[0019] Specifically, the surface of the elastic frame 9 and the surface of the arc-shaped spring strip 6 are connected by a fixing buckle 10.

[0020] Specifically, an insulating wrapping layer 2 is provided on the inner surface of the elastic support layer 3.

[0021] Specifically, a fixing block 11 is fixedly installed at the bottom of the upright 4, and a positioning hole 12 is circumferentially opened on the surface of the fixing block 11.

[0022] In this embodiment, the foam substrate 701 serves as the supporting structure for the conductive foam body 7, providing flexibility, compression resistance, and cushioning protection. Simultaneously, it acts as the carrier for the conductive layer 702, enabling highly efficient electromagnetic shielding (EMI / RFI) to ensure a surface resistance below 10 mohm and a shielding effectiveness of over 90 dB. The adhesive layer 703 uses an adhesive to firmly bond the conductive layer 702 to the foam substrate 701, preventing detachment that could reduce conductivity and facilitating installation. The protective coating 704 enhances the environmental resistance (e.g., temperature range -40°C to 70°C), flame retardant rating (UL94 V0), and service life of the conductive foam body 7. The curved spring strip 6 and elastic skeleton 9 increase the overall stability of the conductive foam body 7 after curved bending, and it has sufficient resilience after long-term compression, thereby increasing the contact pressure, improving the shielding performance, and making it easier to adapt to complex curved surface installation environments. The fixed buckle 10 and connector 8 increase the structural strength of the connection between the conductive foam body 7 and the elastic support layer 3, extending its service life. The insulating wrapping layer 2 can block the current conduction path, effectively isolate the direct contact of components with different potentials, and prevent electromagnetic interference (EMI) and electrostatic discharge (ESD) from interfering with electronic equipment.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[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. An elastic, arched conductive foam, including a base (1), characterized in that: The upper surfaces of the base (1) are respectively fixedly connected to a conductive foam body (7) and an elastic support layer (3). The inner surface of the conductive foam body (7) is provided with a foam substrate (701). The outer surface of the foam substrate (701) is provided with a conductive layer (702). The outer side of the conductive layer (702) is provided with an adhesive layer (703). The outer surface of the adhesive layer (703) is provided with a protective coating (704). The elastic support layer (3) is located inside the conductive foam body (7). The upper surfaces of the base (1) are respectively symmetrically provided with uprights (4). The inner side of the uprights (4) is slidably provided with guide rods (5). The guide rods (5) are connected to each other with arc-shaped spring strips (6). The arc-shaped spring strips (6) are located between the elastic support layer (3) and the conductive foam body (7). The inner surface of the conductive foam body (7) and the surface of the arc-shaped spring strips (6) are bonded and fixed.

2. The elastic arched conductive foam according to claim 1, characterized in that: The outer side of the elastic support layer (3) is connected to an arc-shaped elastic skeleton (9), and the two ends of the elastic skeleton (9) are fixedly connected to the surface of the base (1).

3. The elastic arched conductive foam according to claim 2, characterized in that: The surface of the arc-shaped spring strip (6) is fixedly connected to the inner surface of the conductive foam body (7) by a connector (8).

4. The elastic arched conductive foam according to claim 3, characterized in that: The surface of the elastic skeleton (9) and the surface of the arc spring strip (6) are connected by a fixing buckle (10).

5. The elastic arched conductive foam according to claim 1, characterized in that: An insulating wrapping layer (2) is provided on the inner surface of the elastic support layer (3).

6. The elastic arched conductive foam according to claim 1, characterized in that: A fixing block (11) is fixedly installed at the bottom end of the pole (4), and a positioning hole (12) is provided on the surface of the fixing block (11) in an annular shape.

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