Omnibearing conductive foam with good electromagnetic shielding effect
By introducing a limiting mechanism into the conductive foam, the connection between the conductive foam body and the underlying conductive cloth is enhanced, which solves the problem of conductive foam's viscosity decreasing and loosening in high temperature environments, and significantly improves its electromagnetic shielding effectiveness. and conductive properties.
Patent Information
- Application Number
- CN202420165843.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-01-24
AI Technical Summary
The existing conductive foams have poor heat dissipation in high-temperature environments, resulting in a decrease in the viscosity of the conductive cloth and shielding layer, which is easy to loosen, affecting its electromagnetic shielding performance and conductive properties.
An all-round conductive foam is designed, using a bottom conductive cloth and a conductive foam body, and a limiting mechanism is set on it, including a first fixed cap, a second fixed cap, a plug rod, a nut, a pressure rod and a pressing block. , these structures strengthen the connection between the conductive foam body and the underlying conductive cloth to prevent loosening.
It effectively prevents the decrease in viscosity and loosening of conductive foam in high temperature environments, and improves its electromagnetic shielding effectiveness and conductive performance.
Smart Images
Figure CN222380293U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conductive foam technology, and in particular to an all-around conductive foam with good electromagnetic shielding effect. Background Technology
[0002] Conductive foam refers to conductive cloth wrapped around flame-retardant sponge. After a series of treatments, it acquires excellent surface conductivity and can be easily fixed to devices requiring shielding using adhesive tape. Shielding materials with different cross-sectional shapes, installation methods, UL ratings, and shielding effectiveness are available. The material is very lightweight, providing electromagnetic shielding performance that dominates the electrostatic protection performance of products while ensuring permanence. Its light weight reduces surface impedance, making it independent of environmental humidity. Utilizing excellent corrosion and oxidation resistance, it fully meets the needs of high-tech enterprises in optoelectronics, microelectronics, aerospace, communications, military, and chemical industries for new antistatic materials.
[0003] The conductive cloth and shielding layer of existing conductive foam are mostly laid on the conductive foam by bonding. This is greatly affected by temperature. In high-temperature environments with poor heat dissipation, the adhesion between the conductive cloth and the shielding layer is not strong enough, and they are prone to loosening and gaps, which affects the overall shielding effectiveness and conductivity. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an all-around conductive foam with good electromagnetic shielding effect.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An all-around conductive foam with good electromagnetic shielding effect includes a bottom conductive cloth, a conductive foam body is provided on the top of the bottom conductive cloth, and a limit mechanism is provided above the conductive foam body.
[0007] The limiting mechanism includes a first fixing cap located in the middle and four second fixing caps symmetrically arranged in four directions of the first fixing cap. The bottom of the first fixing cap and the second fixing cap are both fixed with a plug rod. The top of the conductive foam body and the bottom conductive cloth are both provided with a plug hole for the plug rod to pass through. The bottom of the outer wall of the plug rod is provided with an external thread, and the outer wall of the plug rod is threaded with a nut.
[0008] As a further embodiment of this utility model, a connecting mechanism is installed between the first fixing cap and the second fixing cap. The connecting mechanism includes a first pressure rod rotatably connected to the outer wall of the first fixing cap, a second pressure rod rotatably connected to the first pressure rod, and the other end of the second pressure rod rotatably connected to the outer wall of the second fixing cap.
[0009] As a further embodiment of this utility model, a plurality of pressing blocks are uniformly fixed to the bottom of both the first pressing rod and the second pressing rod.
[0010] As a further embodiment of this utility model, the conductive foam body includes a substrate layer, a melamine resin layer, a poly(terephthalic acid) layer, and a shielding layer. The melamine resin layer is bonded to the substrate layer, the poly(terephthalic acid) layer is bonded to the melamine resin layer, the shielding layer is bonded to the poly(terephthalic acid) layer, and the substrate layer is bonded to the bottom conductive fabric.
[0011] As a further embodiment of this utility model, three limiting strips are fixed at equal intervals on the top of the bottom conductive cloth, and a limiting groove adapted to the limiting strips is opened at the bottom of the substrate layer.
[0012] As a further embodiment of this utility model, the top of the shielding layer is provided with a fitting groove that is adapted to and fitted into the limiting mechanism. The conductive foam body includes a substrate layer, a melamine resin layer, a polyterephthalic acid layer and a shielding layer. The fitting groove for fitting the limiting mechanism is provided on the shielding layer to achieve hidden installation of the fitting groove.
[0013] The beneficial effects of this utility model are as follows:
[0014] This utility model comprises a bottom conductive cloth, a conductive foam body, and a limiting mechanism. The limiting mechanism includes a first fixing cap, a second fixing cap, an insertion rod, a nut, a first pressure rod, a second pressure rod, and a pressing block. Insertion holes for the insertion rod to pass through are provided on both the bottom conductive cloth and the conductive foam body. By rotating the nut, the four second fixing caps and one first fixing cap can compress the top of the conductive foam body. The compression effect is further enhanced by the action of the first pressure rod, the second pressure rod, and the pressing block, strengthening the connection between the bottom conductive cloth and the conductive foam body. This prevents the problem of decreased adhesion and loosening, which could affect the shielding effect, in environments with poor heat dissipation at high temperatures.
[0015] This utility model: The conductive foam body includes a substrate layer, a melamine resin layer, a poly(terephthalic acid) layer and a shielding layer, and an interlocking groove with an interlocking limiting mechanism is formed on the shielding layer to achieve hidden installation of the interlocking groove. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of an all-around conductive foam with good electromagnetic shielding effect proposed in this utility model.
[0017] Figure 2 This is a schematic diagram of the unfolded three-dimensional structure of an all-around conductive foam with good electromagnetic shielding effect proposed in this utility model.
[0018] Figure 3This is a three-dimensional structural diagram of a limiting mechanism for an all-around conductive foam with good electromagnetic shielding effect proposed in this utility model.
[0019] Figure 4 This is a cross-sectional structural diagram of the conductive foam body of an all-around conductive foam with good electromagnetic shielding effect proposed in this utility model.
[0020] In the diagram: 1. Bottom conductive cloth; 101. Limiting strip; 2. Conductive foam body; 201. Substrate layer; 202. Melamine resin layer; 203. Poly(terephthalic acid) layer; 204. Shielding layer; 3. Limiting mechanism; 4. Fitting groove; 5. Insertion hole; 6. First fixing cap; 7. Second fixing cap; 8. Insert rod; 9. Nut; 10. First pressure rod; 11. Second pressure rod; 12. Pressing block. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] Reference Figures 1-4 A kind of all-around conductive foam with good electromagnetic shielding effect includes a bottom conductive cloth 1, a conductive foam body 2 is provided on the top of the bottom conductive cloth 1, and a limit mechanism 3 is provided above the conductive foam body 2.
[0024] The limiting mechanism 3 includes a first fixing cap 6 located in the middle and four second fixing caps 7 symmetrically arranged in four directions of the first fixing cap 6. The bottom of the first fixing cap 6 and the second fixing cap 7 are both fixed with insert rods 8. The top of the conductive foam body 2 and the bottom conductive cloth 1 are both provided with insertion holes 5 for the insert rods 8 to pass through. The bottom of the outer wall of the insert rod 8 is provided with external threads, and the outer wall of the insert rod 8 is threaded with nuts 9.
[0025] In this embodiment, a connecting mechanism is installed between the first fixing cap 6 and the second fixing cap 7. The connecting mechanism includes a first pressure rod 10 rotatably connected to the outer wall of the first fixing cap 6, a second pressure rod 11 rotatably connected to the first pressure rod 10, and the other end of the second pressure rod 11 rotatably connected to the outer wall of the second fixing cap 7.
[0026] In this embodiment, a plurality of pressing blocks 12 are uniformly fixed to the bottom of both the first pressing rod 10 and the second pressing rod 11.
[0027] In this embodiment, the conductive foam body 2 includes a substrate layer 201, a melamine resin layer 202, a poly(terephthalic acid) layer 203, and a shielding layer 204. The melamine resin layer 202 is bonded to the substrate layer 201, the poly(terephthalic acid) layer 203 is bonded to the melamine resin layer 202, the shielding layer 204 is bonded to the poly(terephthalic acid) layer 203, and the substrate layer 201 is bonded to the bottom conductive cloth 1.
[0028] In this embodiment, three limiting strips 101 are fixed at equal intervals on the top of the bottom conductive cloth 1, and a limiting groove adapted to the limiting strips 101 is opened at the bottom of the substrate layer 201.
[0029] In this embodiment, the top of the shielding layer 204 is provided with a fitting groove 4 that is adapted to and fitted into the limiting mechanism 3. The conductive foam body 2 includes a substrate layer 201, a melamine resin layer 202, a polyterephthalic acid layer 203 and a shielding layer 204. The fitting groove 4 of the fitting limiting mechanism 3 is provided on the shielding layer 204 to achieve the hidden installation of the fitting groove 4.
[0030] Working principle: In use, the conductive foam body 2 and the limiting mechanism 3 are configured. The limiting mechanism 3 includes a first fixing cap 6, a second fixing cap 7, an insertion rod 8, a nut 9, a first pressure rod 10, a second pressure rod 11, and a pressing block 12. Insertion holes 5 for the insertion rod 8 to pass through are opened on both the bottom conductive cloth 1 and the conductive foam body 2. By rotating the nut 9, the four second fixing caps 7 and one first fixing cap 6 can squeeze the top of the conductive foam body 2. The squeezing effect is enhanced by the action of the first pressure rod 10, the second pressure rod 11, and the pressing block 12, preventing the decrease in adhesion and loosening in high-temperature environments with poor heat dissipation. Furthermore, the conductive foam body 2 includes a substrate layer 201, a melamine resin layer 202, a poly(terephthalic acid) layer 203, and a shielding layer 204. The shielding layer 204 has a fitting groove 4 for the fitting limiting mechanism 3, which enables the fitting groove 4 to be installed in a concealed manner.
[0031] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An omnidirectional conductive foam with good electromagnetic shielding effect, characterized in that: It comprises a bottom conductive cloth (1), a conductive foam body (2) is arranged on the top of the bottom conductive cloth (1), and a limiting mechanism (3) is arranged above the conductive foam body (2); The limiting mechanism (3) comprises a first fixing cap (6) located in the middle and four second fixing caps (7) symmetrically arranged in four directions of the first fixing cap (6); a plug rod (8) is fixed to the bottom of the first fixing cap (6) and the second fixing cap (7); a plug hole (5) for the plug rod (8) to pass through is provided at the top of the conductive foam body (2) and the bottom conductive cloth (1); an external thread is provided at the bottom of the outer wall of the plug rod (8); and a nut (9) is connected to the thread of the outer wall of the plug rod (8).
2. The omnidirectional conductive foam with good electromagnetic shielding effect according to claim 1, characterized in that: A connecting mechanism is installed between the first fixing cap (6) and the second fixing cap (7), and the connecting mechanism includes a first pressure rod (10) rotatably connected to the outer wall of the first fixing cap (6), the first pressure rod (10) is rotatably connected to the second pressure rod (11), and the other end of the second pressure rod (11) is rotatably connected to the outer wall of the second fixing cap (7).
3. The omnidirectional conductive foam with good electromagnetic shielding effect according to claim 2, characterized in that: A plurality of pressing blocks (12) are evenly fixed on the bottom of the first pressing rod (10) and the second pressing rod (11).
4. The omnidirectional conductive foam with good electromagnetic shielding effect according to claim 3, characterized in that: The conductive foam body (2) comprises a substrate layer (201), a melamine resin layer (202), a poly(p-phenylenediol) layer (203) and a shielding layer (204); the melamine resin layer (202) is bonded to the substrate layer (201), the poly(p-phenylenediol) layer (203) is bonded to the melamine resin layer (202), the shielding layer (204) is bonded to the poly(p-phenylenediol) layer (203), and the substrate layer (201) is bonded to the bottom conductive cloth (1).
5. The omnidirectional conductive foam with good electromagnetic shielding effect according to claim 4, characterized in that: Three limiting strips (101) are fixed at equal intervals on the top of the bottom conductive cloth (1), and limiting grooves adapted to the limiting strips (101) are provided on the bottom of the base material layer (201).
6. The omnidirectional conductive foam with good electromagnetic shielding effect according to claim 5, characterized in that: The top of the shielding layer (204) is provided with a groove (4) adapted to the limiting mechanism (3) and embedded in the embedding groove (4).