CN216451746U

CN216451746U - All-round electrically conductive bubble that electromagnetic shield is effectual is cotton

Info

Publication number: CN216451746U
Application number: CN202122767134.4U
Authority: CN
Inventors: 吴春明
Original assignee: Suzhou Jiachuang Electronic Material Co ltd
Current assignee: Suzhou Jiachuang Electronic Material Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-05-06
Anticipated expiration: 2031-11-10

Abstract

The utility model belongs to the field of conductive foam, and particularly discloses omnibearing conductive foam with a good electromagnetic shielding effect, which comprises a conductive foam body, wherein a plurality of caulking grooves are formed in the bottom surface of the conductive foam body at equal intervals, a layer of first conductive cloth is adhered to the bottom surface of the conductive foam body, the first conductive cloth is laid along the inner walls of the caulking grooves, and two sides of the first conductive cloth extend to form edge covering layers covering two outer side surfaces of the conductive foam body; a circle of positioning strips which are embedded into the caulking grooves and press the first conductive cloth on the conductive foam body are wound on the conductive foam body; the cotton body top surface of electrically conductive bubble is pasted and is covered one deck electromagnetic shield layer, and the peripheral first fixed frame and the fixed frame of second that distributes about overlapping respectively of electrically conductive bubble cotton body is used for wrapping the layer pressfitting in the electrically conductive cotton body outside with first electrically conductive cloth, and the fixed frame of second is used for encapsulating the electromagnetic shield layer at electrically conductive bubble cotton body top surface, and the fixed frame of first fixed frame and second docks each other and utilizes glue to link fixedly.

Description

All-round electrically conductive bubble that electromagnetic shield is effectual is cotton

Technical Field

The utility model relates to the field of conductive foam, in particular to omnibearing conductive foam with good electromagnetic shielding effect.

Background

The conductive foam is formed by wrapping conductive cloth on the flame-retardant sponge, and after a series of treatments, the conductive cloth has good surface conductivity and can be easily fixed on a device to be shielded by an adhesive tape. There are different cross-sectional shapes, mounting methods, UL grades and shielding materials available for selection. The material is very light, and the performance of electromagnetic shielding can dominate the electrostatic protection performance of the product and has permanence; the material is light, so the surface impedance capability of the material is reduced, and the material has no dependence on the environmental humidity; the novel antistatic material has good corrosion resistance and oxidation resistance, and fully meets the requirements of high-tech enterprises such as photoelectrons, microelectronics, aviation, aerospace, communication, military, chemical engineering and the like on the novel antistatic material.

The cotton electrically conductive cloth of current electrically conductive bubble and shielding layer pass through the form of bonding to lay on the electrically conductive bubble cotton, receive the temperature influence great, under the not good environment of high temperature heat dissipation, the stickness that electrically conductive cloth and shielding layer bonded is not enough, appears easily to loosen and produce the clearance, influences its holistic shielding effectiveness and electric conductive property.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an omnibearing conductive foam with good electromagnetic shielding effect to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an omnibearing conductive foam with good electromagnetic shielding effect comprises a conductive foam body, wherein a conductive surface of the conductive foam body is defined as a bottom surface, the other surface of the conductive foam body is a top surface, a plurality of sunken caulking grooves are formed in the bottom surface of the conductive foam body at equal intervals, a layer of first conductive cloth is pasted on the bottom surface of the conductive foam body, the first conductive cloth is pasted on the inner wall of the caulking grooves and laid, and two sides of the first conductive cloth extend to form edge covering layers covering two outer side surfaces of the conductive foam body; a circle of positioning strips which are embedded into the caulking grooves and press the first conductive cloth on the conductive foam body are wound on the conductive foam body; the cotton body top surface of electrically conductive bubble is pasted and is covered one deck electromagnetic shield layer, and the cotton body periphery of electrically conductive bubble is equipped with the fixed frame of first fixed frame and the second that distributes from top to bottom respectively, and first fixed frame is used for the bound layer pressfitting of first electrically conductive cloth in the cotton body outside of electrically conductive bubble, and the fixed frame of second is used for encapsulating the electromagnetic shield layer at the cotton body top surface of electrically conductive bubble, and the fixed frame of first fixed frame and second dock each other and utilize glue to link up fixedly.

Preferably, the positioning strip comprises a rubber strip and second conductive cloth coated outside the rubber strip, and avoidance grooves for embedding the positioning strip are reserved at positions, corresponding to the caulking grooves, of the top surface of the conductive foam body respectively, so that the positioning strip is flush with the top surface and the bottom surface of the conductive foam body.

Preferably, the electromagnetic shielding layer is formed by laminating a plurality of copper foil shielding layers.

Preferably, the first fixed frame is a rectangular ring frame structure, the second fixed frame is a rectangular box body structure with an opening facing the first fixed frame, and the inner walls of the first fixed frame and the second fixed frame are abutted to the surfaces of the positioning strips, so that a spacing cavity is formed between the first fixed frame and the outer side surface of the conductive foam body and between the second fixed frame and the outer side surface of the conductive foam body.

Preferably, the inner walls of the two sides of the first fixing frame and the second fixing frame, which avoid the positioning strip, are reserved with a plurality of grooves distributed at equal intervals, the grooves on the inner walls of the first fixing frame and the second fixing frame are communicated in a one-to-one correspondence manner, and glue is injected into the spacing cavities and the grooves to form adhesive tapes which penetrate through and link the first fixing frame and the second fixing frame.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the conductive surface of the conductive foam body is provided with the caulking groove for laying the first conductive cloth, the first conductive cloth is tightly bound by the positioning strip embedded in the caulking groove, and the second conductive cloth is coated outside the positioning strip, so that the conductive contact area of the conductive surface of the conductive foam body is ensured; meanwhile, the first fixing frame is used for fixing the covered edge on the outer side of the first conductive cloth, and the positioning strips can be bound, so that the first conductive cloth is stably laid.

2. The fixed frame of second with the electromagnetic shield encapsulation is overlapped to the outside cover of the cotton body of electrically conductive bubble, and the adhesive tape that is filled the formation by glue behind the fixed frame butt joint of first fixed frame and second runs through the linking, guarantees the stable installation of the fixed frame of first fixed frame and second, and whole compactedness is good for electrically conductive cloth and the difficult pine of electromagnetic shield take off.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a laying structure of a first conductive cloth outside the conductive foam body according to the present invention;

FIG. 3 is a schematic view of a positioning strip wound around a conductive foam body according to the present invention;

FIG. 4 is a schematic view of a specific structure of the positioning strip of the present invention;

fig. 5 is an assembly schematic view of the first and second fixing frames of the present invention.

In the figure: 1. a conductive foam body; 2. caulking grooves; 3. a first conductive cloth; 4. a binding layer; 5. a positioning bar; 6. a second conductive cloth; 7. an avoidance groove; 8. an electromagnetic shielding layer; 9. a first fixed frame; 10. a second fixed frame; 11. a compartment; 12. a groove is opened; 13. and (4) an adhesive tape.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-5, the present invention provides a technical solution: an omnibearing conductive foam with good electromagnetic shielding effect comprises a conductive foam body 1, wherein a conductive surface of the conductive foam body 1 is defined as a bottom surface, the other surface of the conductive foam body is a top surface, a plurality of embedded caulking grooves 2 are formed in the bottom surface of the conductive foam body 1 at equal intervals, a layer of first conductive cloth 3 is adhered to the bottom surface of the conductive foam body 1, the first conductive cloth 3 is adhered to the inner walls of the caulking grooves 2 and laid, and two sides of the first conductive cloth 3 extend to form a binding layer 4 coated on two outer side surfaces of the conductive foam body 1; a circle of positioning strips 5 which are embedded into the caulking grooves 2 and press the first conductive cloth 3 on the conductive foam body 1 are wound on the conductive foam body 1; the cotton body of electrically conductive bubble 1 top surface is pasted and is covered one deck electromagnetic shield layer 8, and the cotton body of electrically conductive bubble 1 periphery is equipped with the fixed frame of first fixed frame 9 and the fixed frame 10 of second that distributes from top to bottom respectively, and first fixed frame 9 is used for the bound layer 4 pressfitting of first electrically conductive cloth 3 in the cotton body 1 outside of electrically conductive bubble, and the fixed frame 10 of second is used for encapsulating the electromagnetic shield layer 8 at the cotton body 1 top surface of electrically conductive bubble, and the fixed frame 10 of first fixed frame 9 and second docks each other and utilizes glue to link up fixedly.

Further, the positioning strip 5 comprises a rubber strip and a second conductive cloth 6 coated outside the rubber strip, and avoidance grooves 7 for embedding the positioning strip 5 are reserved at positions, corresponding to the caulking grooves 2, of the top surface of the conductive foam body 1 respectively, so that the positioning strip 5 is flush with the top surface and the bottom surface of the conductive foam body 1.

Further, the electromagnetic shielding layer 8 is formed by laminating a plurality of copper foil shielding layers.

Further, the first fixed frame 9 is a rectangular ring frame structure, the second fixed frame 10 is a rectangular box structure with an opening facing the first fixed frame 9, and the inner walls of the first fixed frame 9 and the second fixed frame 10 are abutted to the surfaces of the positioning strips 5, so that a spacing cavity 11 is formed between the first fixed frame 9 and the second fixed frame 10 and the outer side surface of the conductive foam body 1.

Further, the both sides inner wall that the fixed frame of first 9 and the fixed frame 10 of second avoided the locating bar 5 reserves the opening groove 12 that has a plurality of equidistant distributions, and the opening groove 12 one-to-one intercommunication on the fixed frame 10 inner wall of first 9 and the second of first fixed frame, pours into glue into the glue and forms the adhesive tape 13 that runs through the fixed frame 10 of first 9 and the second of linking in compartment 11 and opening groove 12.

The working principle is as follows:

firstly, adhering a first conductive cloth 3 to the bottom surface of a conductive foam body 1, laminating and laying along the inner wall of an embedding groove 2, covering the front side and the rear side of the conductive foam body 1 with edge covering layers 4 on two sides of the first conductive cloth 3, and finishing preliminary fixing of the first conductive cloth 3 by using an adhesive; then the rubber strip that will cladding have the electrically conductive cloth 6 of second is around establishing in the cotton body 1 outside of electrically conductive bubble to in embedding the caulking groove 2 of the cotton body 1 top bottom two sides of electrically conductive bubble and dodging groove 7, utilize the binder to paste, so that location strip 5 flushes with the cotton body 1 top of electrically conductive bubble, two surfaces at the bottom, guarantee that the electrically conductive face of the cotton body 1 of electrically conductive bubble is whole to be flushed by electrically conductive cloth and cover, guarantee its electrically conductive area of contact.

Then, a first fixing frame 9 is downwards pressed and sleeved on the conductive foam body 1, the edge covering layer 4 of the first conductive cloth 3 is pressed by the front side wall and the rear side wall of the first fixing frame, and the positioning strips 5 are bound and fixed by the left side wall and the right side wall of the first fixing frame; sleeving a second fixing frame 10 on the top surface of the conductive foam body 1, packaging the electromagnetic shielding layer 8, simultaneously attaching and aligning opposite surfaces of the second fixing frame 10 and the first fixing frame 9, and binding and fixing the positioning strips 5 by the left side wall and the right side wall of the second fixing frame 10; because the notch that supplies the embedding of locating bar 5 is not reserved to the cotton body of electrically conductive bubble 1 left and right sides, consequently locating bar 5 is in the bulge state in the cotton body of electrically conductive bubble 1 left and right sides, consequently forms compartment 11 between the cotton body of first fixed frame 9 and the fixed frame 10 of second and electrically conductive bubble 1 lateral surface.

At last, glue is injected into the gap cavity 11 and the grooves 12 reserved on the inner walls of the first fixed frame 9 and the second fixed frame 10, glue is solidified to form a glue strip 13 penetrating and connecting the first fixed frame 9 and the second fixed frame 10, the first fixed frame 9, the second fixed frame 10 and the conductive foam body 1 are mutually connected and restricted, the whole compactness is good, and the conductive cloth and the electromagnetic shielding layer 8 are not easy to loosen and loosen.

The electromagnetic shielding layer 8 is formed by laminating a plurality of copper foil shielding layers, and the electromagnetic shielding effect is good.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The omnibearing conductive foam with a good electromagnetic shielding effect is characterized by comprising a conductive foam body (1), wherein a conductive surface of the conductive foam body is defined as a bottom surface, and the other surface of the conductive foam body is a top surface, a plurality of embedded caulking grooves (2) are formed in the bottom surface of the conductive foam body (1) at equal intervals, a layer of first conductive cloth (3) is pasted on the bottom surface of the conductive foam body (1), the first conductive cloth (3) is pasted on the inner wall of the caulking grooves (2) and laid, and two sides of the first conductive cloth extend to form edge wrapping layers (4) wrapping two outer side surfaces of the conductive foam body (1); a circle of positioning strips (5) which are embedded into the caulking grooves (2) and press the first conductive cloth (3) on the conductive foam body (1) are wound on the conductive foam body (1); the cotton body of electrically conductive bubble (1) top surface is pasted and is covered one deck electromagnetic shield layer (8), the cotton body of electrically conductive bubble (1) periphery is equipped with the fixed frame of first fixed frame (9) and the fixed frame of second (10) that distribute about the cover respectively, first fixed frame (9) are used for the bound layer (4) pressfitting of first electrically conductive cloth (3) in the cotton body of electrically conductive bubble (1) outside, the fixed frame of second (10) are used for encapsulating electromagnetic shield layer (8) at the cotton body of electrically conductive bubble (1) top surface, and the fixed frame of first fixed frame (9) and second (10) dock each other and utilize glue to link up fixedly.

2. The omni-directional conductive foam with good electromagnetic shielding effect according to claim 1, wherein: the location strip (5) include the rubber strip and cladding at the outside electrically conductive cloth (6) of second of rubber strip, and the cotton body of electrically conductive bubble (1) top surface corresponds each caulking groove (2) position punishment and reserves respectively that supply to locate the groove (7) of dodging of strip (5) embedding to make location strip (5) flush with the cotton body of electrically conductive bubble (1) top, two surfaces at the bottom.

3. The omni-directional conductive foam with good electromagnetic shielding effect according to claim 1, wherein: the electromagnetic shielding layer (8) is formed by laminating a plurality of copper foil shielding layers.

4. The omni-directional conductive foam with good electromagnetic shielding effect according to claim 1, wherein: the utility model discloses a cotton body of electrically conductive bubble, including the cotton body of electrically conductive bubble body (1), first fixed frame (9) are the rectangle ring frame structure, and the fixed frame of first frame (9), and the fixed frame of second (10) are the rectangle box body structure of opening towards first fixed frame (9), and the fixed frame of first frame (9) and the fixed frame of second (10) inner wall and each location strip (5) surface butt for form between the fixed frame of first frame (9) and second (10) and electrically conductive bubble cotton body (1) lateral surface and separate chamber (11).

5. The omni-directional conductive foam with good electromagnetic shielding effect according to claim 1, wherein: the fixed frame of first fixed frame (9) and second (10) keep away from both sides inner wall reservation of location strip (5) has opening groove (12) of a plurality of equidistant distributions, and opening groove (12) one-to-one intercommunication on the fixed frame of first fixed frame (9) and second (10) inner wall, pours into glue into compartment (11) and opening groove (12) and forms adhesive tape (13) that run through linking up the fixed frame of first fixed frame (9) and second (10).