A spliced ​​conductive foam

Abstract

The present invention discloses a spliced ​​conductive foam, wherein the foam body is formed integrally by hot pressing of an upper foam and a lower foam, the left outer wall of the lower foam horizontally extends outward to form a first protrusion, the right outer wall of the lower foam horizontally extends outward to form a second protrusion, the top and bottom surfaces of the first protrusion are respectively bonded with a left upper connecting strip and a left lower connecting strip, the top and bottom surfaces of the second protrusion are respectively bonded with a right upper connecting strip and a right lower connecting strip, the left upper connecting strip is provided with a first sliding groove, and the surface of the right upper connecting strip is protruded to form a first sliding block matched with the first sliding groove. The left upper connecting strip, the left lower connecting strip, the right upper connecting strip, the right lower connecting strip and other components of the present invention are all located outside the conductive foam, which will not affect the normal compression deformation of the conductive foam, nor will it limit the use scenarios of the conductive foam, and the use effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of conductive foam, and in particular to a spliced ​​conductive foam. Background Art

[0002] Conductive foam refers to a flame-retardant sponge wrapped with conductive cloth. After a specific treatment, it has good conductivity and is widely used in electromagnetic shielding of electronic equipment. Conductive foam can shield external electromagnetic interference through conductive paths to ensure the normal operation of the equipment. However, when it is necessary to shield devices of larger size or complex shape, existing conductive foams have some technical limitations.

[0003] First, when the surface of the electronic device is large, it is usually necessary to paste multiple independent conductive foams. However, since the adjacent conductive foams are not tightly connected, deformation or displacement will cause gaps between the foams, affecting the shielding effect and failing to completely cover the device surface, thereby reducing the overall electromagnetic shielding performance.

[0004] To this end, the conductive foam in the prior art combines multiple foams by splicing. For example, the prior art with announcement number CN113921167B provides a combined special-shaped conductive foam, which quickly splices and fixes multiple pieces of conductive foam through structures such as docking columns, thereby improving the overall shielding effect of the conductive foam. However, these connection structures are located inside the foam, which limits its deformation when compressed and makes it difficult to be used in narrow spaces. Secondly, when compressed, the connection structure easily leads to a decrease in the amount of compression, which affects the resilience and service life of the foam. At the same time, due to the complexity of the internal structure, the production and manufacturing costs increase, which limits the promotion of conductive foam in practical applications.

[0005] Therefore, the existing technology urgently needs to be improved to develop a technology that can achieve modular splicing while ensuring the compression and rebound performance of the conductive foam, solve the electromagnetic shielding problem of large-size equipment or equipment with complex shapes, and ensure the good use of foam in a small space. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0007] Therefore, the object of the present invention is to provide a spliced ​​conductive foam, comprising a foam body, and a conductive cloth wrapped around the outer surface of the foam body, wherein the conductive cloth is coated with a conductive adhesive layer for bonding with an external device.

[0008] The foam body is formed as a whole by hot pressing an upper foam and a lower foam, the left outer wall of the lower foam extends horizontally outward to form a first protrusion, the right outer wall of the lower foam extends horizontally outward to form a second protrusion, and the conductive cloth on the left and right sides of the lower foam is provided with through holes for the first protrusion and the second protrusion to pass through.

[0009] The top surface and bottom surface of the first protrusion are respectively bonded with a left upper connecting strip and a left lower connecting strip, and the top surface and bottom surface of the second protrusion are respectively bonded with a right upper connecting strip and a right lower connecting strip.

[0010] The left upper connecting strip is provided with a first sliding groove, and the surface of the right upper connecting strip is protruded to form a first sliding block matched with the first sliding groove.

[0011] A fixed elastic strip, a movable elastic strip and a connecting mechanism are arranged between the left upper connecting strip and the left lower connecting strip, and between the right upper connecting strip and the right lower connecting strip.

[0012] The movable elastic strip comprises an elastic sheet and connecting plates located at both ends of the elastic sheet, and the connecting plates are provided with notches matched with the connecting mechanism.

[0013] As the preferred technical solution:

[0014] In the spliced ​​conductive foam as described above, grooves are evenly formed on opposite sides of the upper foam and the lower foam, and the groove combination between the upper foam and the lower foam is a cylindrical hole groove, a connecting rod is inserted into the hole groove, and both ends of the connecting rod pass through the conductive cloth and are respectively connected to the left upper connecting strip and the right upper connecting strip.

[0015] Both ends of the connecting rod are perpendicular to the left upper connecting bar and the right upper connecting bar, and the connecting rod is distributed horizontally as a whole.

[0016] Through the above technical scheme, the distribution design of the connecting rod makes it possible that when only the upper foam is subjected to the extrusion force, the extrusion force is transmitted to the connecting rod through the upper foam, and the connecting rod transmits the force to the fixed elastic strip and the movable elastic strip through the left upper connecting strip and the left lower connecting strip as well as the right upper connecting strip and the right lower connecting strip on both sides, so that the fixed elastic strip and the movable elastic strip have elastic potential energy after deformation, and when the external force disappears, the conductive foam can be assisted to rebound, thereby increasing the overall thickness of the conductive foam after rebound, which is beneficial to improving the overall electromagnetic shielding effect of the conductive foam.

[0017] In the spliced ​​conductive foam as described above, the left upper connecting strip and the left lower connecting strip are parallel to each other, the right upper connecting strip and the right lower connecting strip are parallel to each other, and the left lower connecting strip and the right lower connecting strip are flush with the conductive cloth at the bottom of the foam body.

[0018] Through the above technical solution, the arrangement of the left lower connecting strip and the right lower connecting strip will not affect the flatness of the bottom surface of the conductive foam, so that during normal use, the conductive foam can be flatly attached to the surface of the device, and the structure is reasonable.

[0019] In the spliced ​​conductive foam as described above, the fixed elastic strip and the elastic sheet are both made of plastic elastomer, the fixed elastic strip and the elastic sheet are both vertical, and the left upper connecting strip and the left lower connecting strip as well as the right upper connecting strip and the right lower connecting strip are all fixedly bonded to the fixed elastic strip.

[0020] Through the above technical solution, the fixed elastic strips and elastic sheets can be made of TPE, TPR or a material with high elasticity, so that the fixed elastic strips and elastic sheets can generate a certain elastic potential energy after deformation, thereby better assisting the conductive foam to rebound and deform.

[0021] In the above-mentioned spliced ​​conductive foam, both the first sliding groove and the first sliding block are in the shape of long strips, and both the first sliding groove and the first sliding block have T-shaped cross-sections.

[0022] Through the above technical solution, the formation design of the first sliding groove and the first sliding block ensures that when the first sliding block is inserted into the first sliding groove, the first sliding block will not slide out of the first sliding groove along its width direction, thereby ensuring the integrity of the conductive foam after splicing.

[0023] In the spliced ​​conductive foam as described above, the connection mechanism is composed of a group of first rotating columns and a group of second rotating columns, and the cross-sections of the first rotating columns and the second rotating columns are semicircular structures.

[0024] Through the above technical solution, the shapes of the first rotating column and the second rotating column are designed so that they can be combined into a cylinder, and then the connecting plate can axially rotate around the cylinder through the notch.

[0025] In the spliced ​​conductive foam as described above, the left upper connecting strip, the left lower connecting strip, the right upper connecting strip and the right lower connecting strip are all integrally formed with the first rotating column and the second rotating column.

[0026] Through the above technical solution, the two first rotating columns between the left upper connecting bar and the left lower connecting bar and between the right upper connecting bar and the right lower connecting bar share a common axis centerline, and the two second rotating columns also share a common axis centerline.

[0027] The left end surfaces of the left upper connecting bar, the left lower connecting bar, the right upper connecting bar and the right lower connecting bar are flush with the side surface of the first rotating column.

[0028] The right end surfaces of the left upper connecting bar, the left lower connecting bar, the right upper connecting bar and the right lower connecting bar are flush with the side surface of the second rotating column.

[0029] In this way, when the two conductive foams are butted together in the length direction, the side surface of the first rotating column and the side surface of the second rotating column can fit together, and then the first rotating column and the second rotating column can be combined into a cylinder.

[0030] In the spliced ​​conductive foam as described above, both ends of the elastic sheet are fixedly bonded to the connecting plate, and the opposite sides of the left upper connecting strip and the left lower connecting strip and the opposite sides of the right upper connecting strip and the right lower connecting strip are both in contact with the connecting plate.

[0031] Through the above technical solution, by fitting with the connecting plate, when the left upper connecting strip and the right upper connecting strip are subjected to the force transmitted by the connecting rod, the force will be transmitted to the elastic sheet through the connecting plate, thereby causing the elastic sheet to undergo elastic deformation.

[0032] In the spliced ​​conductive foam as described above, the recess is a semicircular arc structure, the diameters of the first rotating column and the second rotating column are consistent with the inner diameter of the recess, a circular arc second sliding groove is provided on the outer circular wall of the first rotating column and the second rotating column, and a circular arc second sliding block is provided on the inner circular wall of the recess.

[0033] The second sliding groove and the second sliding block are adapted to each other, and the cross-sections of the second sliding groove and the second sliding block are both T-shaped structures.

[0034] Through the above technical solution, the design of the second sliding groove and the second sliding block ensures that after the second sliding block is screwed into the second sliding groove, the second sliding block will not fall off the second sliding groove in the horizontal direction, thereby ensuring that the connecting plate will not be separated from the first rotating column and the second rotating column, thereby ensuring the firmness of the connection.

[0035] Compared with the prior art, the present invention has at least the following beneficial effects:

[0036] (1) Modular splicing and multi-dimensional connection mechanism. The present invention realizes flexible splicing of the conductive foam in the width and length directions through the ingenious design of the left upper connecting strip, the left lower connecting strip, the right upper connecting strip and the right lower connecting strip. The splicing in the width direction is achieved through the T-shaped structure of the first sliding groove and the first sliding block, ensuring the firmness and stability of the splicing; the splicing in the length direction is completed by the rotational cooperation of the connecting plate and the connecting mechanism (the first rotating column and the second rotating column), which is easy to operate and reliable in connection. This multi-dimensional splicing mechanism is not only suitable for devices of different sizes and shapes, but also ensures that the conductive foam after splicing will not produce gaps during the compression and rebound process, thereby improving the overall electromagnetic shielding effect.

[0037] (2) Coordinated optimization of external connection structure and internal compression performance. The connection structure of the present invention (such as the upper connection strip on the left, the upper connection strip on the right, etc.) is located outside the conductive foam, avoiding the interference of the traditional internal connection structure on the compression performance of the foam. Through the design of fixed elastic strips and movable elastic strips (elastic sheets), when the conductive foam is compressed, the external force will be transmitted to the fixed elastic strips and movable elastic strips through the connecting rod, causing them to produce elastic deformation and store elastic potential energy. When the external force disappears, the elastic potential energy is released, and the auxiliary foam rebounds quickly, ensuring that the conductive foam can still maintain its original thickness and electromagnetic shielding performance after multiple compressions. This coordinated optimization of external connection and internal compression performance solves the problem of limited compression and rebound performance of traditional conductive foam in a small space.

[0038] (3) Multi-level transmission and rebound enhancement of elastic potential energy. The present invention realizes efficient utilization of elastic potential energy through a multi-level transmission mechanism of connecting rods, fixed elastic strips, and movable elastic strips (elastic sheets). When the conductive foam is compressed, the external force is first transmitted to the connecting rod through the upper foam, and then transmitted to the upper connecting strip on the left and the upper connecting strip on the right, and finally acts on the fixed elastic strip and the movable elastic strip. This multi-level transmission mechanism not only enhances the rebound performance of the conductive foam, but also ensures that the foam is evenly stressed during the compression process, avoiding deformation or damage caused by local stress concentration.

[0039] (4) Simplify the production process and reduce costs. The connection structure of the present invention (such as the left upper connection bar, the right upper connection bar, etc.) is located outside the conductive foam, and the splicing function is realized through a simple sliding groove, sliding block and rotating column design. This external connection structure not only simplifies the production process, but also reduces the manufacturing cost. In addition, the modular design of components such as the connecting rod and the fixed elastic strip makes the production and assembly of the conductive foam more convenient, which is conducive to large-scale promotion and application.

[0040] (5) High-efficiency electromagnetic shielding and wide applicability. Through the design of modular splicing and external connection structure, the present invention can flexibly adapt to electronic devices of different sizes and shapes, ensuring that the conductive foam can still maintain good electromagnetic shielding performance after splicing. At the same time, the elastic potential energy-assisted rebound mechanism of the fixed elastic strip and the movable elastic strip ensures that the conductive foam can still maintain its original thickness and shielding effect after multiple compressions, which is suitable for various complex usage scenarios, especially the electromagnetic shielding needs in small spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0042] Figure 1 A perspective view of the present invention;

[0043] Figure 2 is a cross-sectional view of the present invention;

[0044] Figure 3 It is a left side view of the present invention;

[0045] Figure 4 It is a splicing diagram in the width direction of the present invention;

[0046] Figure 5 It is a splicing diagram in the length direction of the present invention;

[0047] Figure 6 It is a three-dimensional diagram of the upper foam, the lower foam and the connecting rod of the present invention;

[0048] Figure 7 A three-dimensional diagram of the connecting plate, the first rotating column and the second rotating column of the present invention;

[0049] Figure 8 It is a side view of the connecting plate and the notch of the present invention.

[0050] In the figure: 1. upper foam; 2. lower foam; 3. conductive cloth; 4. conductive adhesive layer; 5. first protrusion; 6. second protrusion; 7. upper connecting strip on the left side; 8. lower connecting strip on the left side; 9. upper connecting strip on the right side; 10. lower connecting strip on the right side; 11. first sliding groove; 12. first sliding block; 13. fixed elastic strip; 14. elastic sheet; 15. connecting plate; 16. notch; 17. first rotating column; 18. second rotating column; 19. second sliding groove; 20. second sliding block; 21. groove; 22. connecting rod. DETAILED DESCRIPTION

[0051] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0053] See also Figure 1-5 The present invention provides a technical solution: a spliced ​​conductive foam, comprising a foam body, and a conductive cloth 3 wrapped on the outer surface of the foam body, and the conductive cloth 3 is coated with a conductive adhesive layer 4 for bonding with an external device.

[0054] The foam body is formed as a whole by hot pressing an upper foam 1 and a lower foam 2. The left outer wall of the lower foam 2 extends horizontally outward to form a first protrusion 5, and the right outer wall of the lower foam 2 extends horizontally outward to form a second protrusion 6. The conductive cloth 3 on the left and right sides of the lower foam 2 is provided with through holes for the first protrusion 5 and the second protrusion 6 to pass through.

[0055] The top and bottom surfaces of the first protruding portion 5 are respectively bonded with a left upper connecting strip 7 and a left lower connecting strip 8 , and the top and bottom surfaces of the second protruding portion 6 are respectively bonded with a right upper connecting strip 9 and a right lower connecting strip 10 .

[0056] The left upper connecting strip 7 is provided with a first sliding groove 11, and the right upper connecting strip 9 has a first sliding block 12 protruding from its surface to match the first sliding groove 11. Both the first sliding groove 11 and the first sliding block 12 are in the shape of long strips, and both have T-shaped cross-sections.

[0057] A fixed elastic strip 13 , a movable elastic strip and a connecting mechanism are provided between the left upper connecting strip 7 and the left lower connecting strip 8 , and between the right upper connecting strip 9 and the right lower connecting strip 10 .

[0058] The movable elastic strip includes an elastic sheet 14 and connecting plates 15 located at both ends of the elastic sheet 14 . The connecting plates 15 are provided with notches 16 that match the connecting mechanism.

[0059] The surface of the conductive cloth 3 on the top of the upper foam 1 is coated with a conductive adhesive layer 4, and the surface of the conductive cloth 3 on the bottom of the lower foam 2 is coated with a conductive adhesive layer 4, and the surface of the conductive adhesive layer 4 is covered with an isolation film. When the conductive foam needs to be spliced ​​in its width direction, the two adjacent conductive foams are one positive and one negative. In this way, the bottom end and bottom surface of the conductive foam are both provided with a conductive adhesive layer 4, so as to ensure the bonding firmness of the conductive foam and prevent the conductive foam from falling off the device after splicing.

[0060] When two conductive foams need to be spliced ​​in their width direction, conductive foam A is placed normally and conductive foam B is flipped 180°, so that the left upper connecting strip 7 on the flipped conductive foam A can be opposite to the right upper connecting strip 9 on the conductive foam B. By sliding the first sliding block 12 horizontally into the first sliding groove 11, the left upper connecting strip 7 and the right upper connecting strip 9 can be docked together, thereby realizing the splicing of the two conductive foams.

[0061] At this time, after the spliced ​​conductive foam as a whole is compressed and deformed, the extrusion force exerted on the conductive foam A will be first transmitted to the upper foam 1, and then to the lower foam 2, and the extrusion force received by the conductive foam B will be directly transmitted to the lower foam 2. Fixed elastic strips 13 and movable elastic strips are arranged on both sides of the lower foam 2. The elastic potential energy generated by the fixed elastic strips 13 and the movable elastic strips can assist the conductive foam to rebound. In this way, after the conductive foam is squeezed and deformed for many times, it can still recover and maintain a certain thickness. The thickness of the foam body affects the overall electromagnetic shielding effect. Through this design, the electromagnetic shielding performance of the conductive foam can be improved.

[0062] By flipping 180° for splicing, the elastic potential energy generated by the lower foam 2 on the conductive foam A can assist the upper foam 1 on the conductive foam B to rebound, and the elastic potential energy generated by the lower foam 2 on the conductive foam B can assist the upper foam 1 on the conductive foam A to rebound. The two conductive foams cooperate with each other to improve the overall resilience.

[0063] When two conductive foams need to be spliced ​​in their length direction, the two conductive foams are butted end to end. At this time, the connecting plate 15 is rotated and moved on the connecting mechanism through the notch 16, and then the two conductive foams can be spliced ​​together through the connecting mechanism. By combining and splicing the conductive foams, it can be suitable for devices of different sizes.

[0064] like Figure 2 and Figure 6 As shown, grooves 21 are evenly formed on the opposite sides of the upper foam 1 and the lower foam 2. The grooves 21 between the upper foam 1 and the lower foam 2 are combined into cylindrical holes, and a connecting rod 22 is inserted into the hole. Both ends of the connecting rod 22 pass through the conductive cloth 3 and are connected to the left upper connecting strip 7 and the right upper connecting strip 9 respectively.

[0065] Both ends of the connecting rod 22 are perpendicular to the left upper connecting strip 7 and the right upper connecting strip 9. The connecting rod 22 is distributed horizontally as a whole. The left upper connecting strip 7 and the left lower connecting strip 8 are parallel to each other, the right upper connecting strip 9 and the right lower connecting strip 10 are parallel to each other, and the left lower connecting strip 8 and the right lower connecting strip 10 are flush with the conductive cloth 3 at the bottom of the foam body.

[0066] A plurality of holes and grooves can be formed between the upper foam 1 and the lower foam 2. By inserting a plurality of connecting rods 22 into the holes and grooves, the extrusion force exerted on the upper foam 1 can be transmitted to the left upper connecting strip 7 and the right upper connecting strip 9 through the connecting rods 22, and then indirectly transmitted to the fixed elastic strip 13 and the movable elastic strip. Since the left upper connecting strip 7 and the right upper connecting strip 9 are located on both sides of the lower foam 2, the design of the connecting rods 22 can avoid the extrusion force from directly acting on the upper foam 1 and the lower foam 2.

[0067] After the fixed elastic strip 13 and the movable elastic strip are subjected to the squeezing force, since the left lower connecting strip 8 and the right lower connecting strip 10 are in contact with the device surface, the fixed elastic strip 13 and the movable elastic strip will be deformed under the action of the squeezing force and generate elastic potential energy. When the squeezing force is reduced, the elastic potential energy can assist the upper foam 1 and the lower foam 2 to be reset.

[0068] The connecting rod 22, the left upper connecting strip 7, the left lower connecting strip 8, the right upper connecting strip 9 and the right lower connecting strip 10 are all made of plastic materials, and the connecting rod 22 and the left upper connecting strip 7 and the right upper connecting strip 9 are all fixedly bonded or hot-melt connected.

[0069] like Figure 1 , Figure 2 and Figure 3 As shown, the fixed elastic strip 13 and the elastic sheet 14 are both made of plastic elastomer, and are both vertical. The left upper connecting strip 7 and the left lower connecting strip 8 as well as the right upper connecting strip 9 and the right lower connecting strip 10 are all fixedly bonded to the fixed elastic strip 13, and both ends of the elastic sheet 14 are fixedly bonded to the connecting plate 15, and the opposite sides of the left upper connecting strip 7 and the left lower connecting strip 8 as well as the opposite sides of the right upper connecting strip 9 and the right lower connecting strip 10 are all in contact with the connecting plate 15.

[0070] When the left upper connecting bar 7 and the right upper connecting bar 9 are subjected to the force transmitted by the connecting rod 22, the left upper connecting bar 7 and the right upper connecting bar 9 will move downward under the force, and the left upper connecting bar 7 can cooperate with the left lower connecting bar 8 to squeeze the fixed elastic bar 13 during the downward process, and the right upper connecting bar 9 can also squeeze the fixed elastic bar 13 during the downward process by cooperating with the right lower connecting bar 10, and the fixed elastic bar 13 will produce elastic deformation at this time.

[0071] The left upper connecting strip 7 and the right upper connecting strip 9 will also squeeze the elastic sheet 14 through the connecting plate 15 during the downward process, and the elastic sheet 14 will also produce elastic deformation. The fixed elastic strip 13 and the elastic sheet 14 have elastic potential energy after deformation, so that when the squeezing force disappears, it can assist the upper foam 1 and the lower foam 2 to rebound.

[0072] The fixed elastic strip 13 and the elastic sheet 14 are located on both sides of the first protrusion 5 or the second protrusion 6. In this way, when the conductive foam is squeezed after splicing, there is still a distance between the fixed elastic strip 13 and the elastic sheet 14, so that the fixed elastic strip 13 and the elastic sheet 14 can be fully deformed.

[0073] like Figure 1 , Figure 5 , Figure 7 and Figure 8As shown, the connecting mechanism is composed of a group of first rotating columns 17 and a group of second rotating columns 18. The cross-section of the first rotating columns 17 and the second rotating columns 18 is a semicircular structure, and the left upper connecting bar 7, the left lower connecting bar 8, the right upper connecting bar 9 and the right lower connecting bar 10 are all integrally formed with the first rotating column 17 and the second rotating column 18.

[0074] The recess 16 is a semicircular structure. The diameters of the first rotating column 17 and the second rotating column 18 are consistent with the inner diameter of the recess 16. A circular arc second sliding groove 19 is provided on the outer circular wall of the first rotating column 17 and the second rotating column 18, and a circular arc second sliding block 20 is provided on the inner circular wall of the recess 16.

[0075] The second sliding groove 19 and the second sliding block 20 are adapted to each other, and the cross-sections of the second sliding groove 19 and the second sliding block 20 are both T-shaped structures.

[0076] When it is necessary to splice two conductive foams in the length direction, the two conductive foams are butted end to end. At this time, the side of the second rotating column 18 at the right end of the left upper connecting strip 7, the left lower connecting strip 8, the right upper connecting strip 9 and the right lower connecting strip 10 on the conductive foam A will fit with the side of the first rotating column 17 at the left end of the left upper connecting strip 7, the left lower connecting strip 8, the right upper connecting strip 9 and the right lower connecting strip 10 on the conductive foam B. At this time, the fitted first rotating column 17 and the second rotating column 18 are combined into a cylinder. At this time, the second sliding grooves 19 on the first rotating column 17 and the second rotating column 18 are combined from arc shapes to circular ring shapes, and the second sliding block 20 can perform 360° axial rotation in the combined second sliding groove 19.

[0077] A circle of rubber pads is arranged on the groove wall of the second sliding groove 19. The second sliding block 20 will contact with the rubber pads when rotating, thereby generating friction. The friction force prevents the second sliding block 20 from sliding in the second sliding groove 19 without the action of external force, thereby ensuring that the connecting plate 15 can remain in a fixed state after the first rotating column 17 and the second rotating column 18 rotate.

[0078] Then the connecting plate 15 is rotated 90° around the first rotating column 17 and the second rotating column 18 through the recess 16. The end face of the connecting plate 15 that is not connected to the elastic sheet 14 is perpendicular to the side face of the first rotating column 17, so that the first rotating column 17 and the second rotating column 18 are restricted by the recess 16. At this time, the first rotating column 17 and the second rotating column 18 will not be separated in the length direction of the conductive foam, so that the splicing operation can be completed. The splicing and splitting are completed by rotating the connecting plate 15, the operation is simple and convenient, and the overall structure is simple, and multiple components such as the left upper connecting strip 7, the left lower connecting strip 8, the right upper connecting strip 9 and the right lower connecting strip 10 are all located outside the conductive foam. After the conductive foam is produced, it can be directly installed on the conductive foam, which can simplify the production process and reduce production costs, which is conducive to popularization and use.

[0079] The left upper connecting strip 7, the left lower connecting strip 8, the right upper connecting strip 9 and the right lower connecting strip 10 and other components can realize auxiliary rebound while realizing the splicing function, which greatly improves the overall practicality.

[0080] In the description of this specification, "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spliced ​​conductive foam, comprising a foam body, and a conductive cloth (3) wrapped around the outer surface of the foam body, wherein the conductive cloth (3) is coated with a conductive adhesive layer (4) for bonding to an external device, Features: The foam body is formed by hot pressing an upper foam (1) and a lower foam (2) into one piece, the left outer wall of the lower foam (2) horizontally extending outwards to form a first protrusion (5), the right outer wall of the lower foam (2) horizontally extending outwards to form a second protrusion (6), and the conductive cloth (3) on the left and right sides of the lower foam (2) is provided with through holes for the first protrusion (5) and the second protrusion (6) to pass through; The top surface and bottom surface of the first protruding portion (5) are respectively bonded with a left upper connecting strip (7) and a left lower connecting strip (8), and the top surface and bottom surface of the second protruding portion (6) are respectively bonded with a right upper connecting strip (9) and a right lower connecting strip (10); A first sliding groove (11) is formed on the upper surface of the left upper connecting strip (7), and a first sliding block (12) is formed protruding from the upper surface of the right upper connecting strip (9) and matches the first sliding groove (11); A fixed elastic strip (13), a movable elastic strip and a connecting mechanism are provided between the left upper connecting strip (7) and the left lower connecting strip (8), and between the right upper connecting strip (9) and the right lower connecting strip (10); The movable elastic strip comprises an elastic sheet (14) and connecting plates (15) located at both ends of the elastic sheet (14); the connecting plates (15) are provided with notches (16) that cooperate with the connecting mechanism; The connection mechanism is composed of a group of first rotating columns (17) and a group of second rotating columns (18), and the cross-sections of the first rotating columns (17) and the second rotating columns (18) are semicircular structures; The first rotating column (17) and the second rotating column (18) are respectively located at two ends of each connecting strip.

2. The spliced ​​conductive foam according to claim 1, characterized in that: The upper foam (1) and the lower foam (2) are both evenly provided with grooves (21) on opposite sides thereof. The grooves (21) between the upper foam (1) and the lower foam (2) are combined to form a cylindrical hole. A connecting rod (22) is inserted into the hole. Both ends of the connecting rod (22) pass through the conductive cloth (3) and are respectively connected to the left upper connecting strip (7) and the right upper connecting strip (9).

3. The spliced ​​conductive foam according to claim 2, characterized in that: Both ends of the connecting rod (22) are perpendicular to the left upper connecting bar (7) and the right upper connecting bar (9), and the connecting rod (22) is distributed horizontally as a whole.

4. The spliced ​​conductive foam according to claim 1, characterized in that: The left upper connecting strip (7) and the left lower connecting strip (8) are parallel to each other, the right upper connecting strip (9) and the right lower connecting strip (10) are parallel to each other, and the left lower connecting strip (8) and the right lower connecting strip (10) are flush with the conductive cloth (3) at the bottom of the foam body.

5. The spliced ​​conductive foam according to claim 1, characterized in that: The fixed elastic strip (13) and the elastic sheet (14) are both made of plastic elastomer, the fixed elastic strip (13) and the elastic sheet (14) are both vertical, and the left upper connecting strip (7) and the left lower connecting strip (8) as well as the right upper connecting strip (9) and the right lower connecting strip (10) are all fixedly bonded to the fixed elastic strip (13).

6. The spliced ​​conductive foam according to claim 1, characterized in that: The first sliding groove (11) and the first sliding block (12) are both in the shape of long strips, and the cross-sections of the first sliding groove (11) and the first sliding block (12) are both in the shape of a T.

7. The spliced ​​conductive foam according to claim 1, characterized in that: The left upper connecting bar (7), the left lower connecting bar (8), the right upper connecting bar (9) and the right lower connecting bar (10) are all integrally formed with the first rotating column (17) and the second rotating column (18).

8. The spliced ​​conductive foam according to claim 1, characterized in that: The two ends of the elastic sheet (14) are fixedly bonded to the connecting plate (15), and the opposite sides of the left upper connecting strip (7) and the left lower connecting strip (8) and the opposite sides of the right upper connecting strip (9) and the right lower connecting strip (10) are both in contact with the connecting plate (15).

9. The spliced ​​conductive foam according to claim 1, characterized in that: The recess (16) is a semicircular structure; the diameters of the first rotating column (17) and the second rotating column (18) are consistent with the inner diameter of the recess (16); the outer circular walls of the first rotating column (17) and the second rotating column (18) are provided with a circular arc second sliding groove (19); and the inner circular wall of the recess (16) is provided with a circular arc second sliding block (20); The second sliding groove (19) and the second sliding block (20) are adapted to each other, and the cross-sections of the second sliding groove (19) and the second sliding block (20) are both T-shaped structures.

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