Electromagnetic shielding heat-shrinkable tube with conductive projections on inner wall

Abstract

The utility model relates to an electromagnetic shielding heat shrink tube with electrically-conductive protrusions on the inner wall, belonging to the heat shrink tube technology, comprising a heat shrink tube body and a detachable filler, outer ring grooves and inner ring grooves are respectively arranged at both ends of the heat shrink tube body, and the detachable filler is installed in the outer ring grooves and the inner ring grooves; the heat shrink tube body comprises a heat shrink outer layer, a heat shrink inner layer, a crack prevention connecting piece, and an electrically-conductive protrusion part, the crack prevention connecting piece is fixedly arranged between the heat shrink outer layer and the heat shrink inner layer, the electrically-conductive protrusion part is fixed on the inner wall of the heat shrink inner layer, and the electrically-conductive protrusion part is circumferentially distributed on the heat shrink inner layer, the utility model can be flexibly spliced, meets the installation requirements of various lengths, is flat and compact after heat shrinkage, has good sealing, is stable in use and not prone to cracking, and can comprehensively improve the electromagnetic shielding efficiency and ensure the use effect.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink tubing technology, and in particular to an electromagnetically shielded heat shrink tubing with conductive protrusions on the inner wall. Background Technology

[0002] Electromagnetic shielding heat shrink tubing is a special type of heat shrink tubing that combines electromagnetic shielding and environmental sealing functions. Its core structure is a heat-shrinkable polyolefin tube body, with an inner wall coated with a flexible conductive adhesive layer containing precious metals or magnetic materials. Through a heat shrinking process, it tightly wraps around cables or connectors, effectively absorbing and reflecting electromagnetic waves, preventing signal leakage and external interference. It is suitable for applications with stringent electromagnetic compatibility requirements, such as aerospace, automotive electronics, and communication equipment.

[0003] However, existing heat shrink tubing has many problems in use. On the one hand, it is difficult to achieve seamless connections when meeting installation requirements of different lengths, and gaps are prone to appear at the joints. Furthermore, during heat shrinking, the heat shrink tubing may not make a tight enough contact with the cable or connector, affecting the sealing performance and electromagnetic shielding integrity, thus significantly reducing the protective effect. On the other hand, during the heat shrinking process, the tubing is prone to cracking due to stress concentration, which not only affects the appearance but also reduces its stability and lifespan. In view of these issues, this application is made. Utility Model Content

[0004] To overcome the technical defects of the existing technology, this utility model provides an electromagnetic shielding heat shrink tubing with conductive protrusions on the inner wall. It has the technical characteristics of being able to achieve seamless splicing, adapting to different lengths for installation, heat shrinking flat and sealing well, effectively preventing cracking, and comprehensively enhancing electromagnetic shielding performance.

[0005] The technical solution adopted by this utility model is as follows: it includes a heat shrink tubing body and a removable filler. The heat shrink tubing body has an outer ring groove and an inner ring groove at both ends, and the removable filler is installed in the outer ring groove and the inner ring groove.

[0006] The heat shrink tubing body includes a heat shrinkable outer layer, a heat shrinkable inner layer, a crack-resistant connector, and a conductive protrusion. The crack-resistant connector is fixedly disposed between the heat shrinkable outer layer and the heat shrinkable inner layer. The conductive protrusion is fixed on the inner wall of the heat shrinkable inner layer and is circumferentially distributed on the heat shrinkable inner layer.

[0007] In order to facilitate the removal and installation of the heat-shrinkable filling ring in the outer and inner ring grooves via the annular adhesive tape, the present invention is improved in that the removable filling component includes the heat-shrinkable filling ring and the annular adhesive tape, the annular adhesive tape is adhered to the inner wall of the outer and inner ring grooves, and the heat-shrinkable filling ring is fixed to the annular adhesive tape.

[0008] In order to enable the heat shrink filler ring to form an integral part with the heat shrink tubing body after installation, the present invention is improved in that the outer wall of the heat shrink filler ring located on the inner wall of the outer ring groove is flush with the outer wall of the heat shrink tubing body, and the inner wall of the heat shrink filler ring located on the inner wall of the inner ring groove is flush with the inner wall of the heat shrink tubing body.

[0009] In order to limit the anti-crack mesh through the first connecting film and the second connecting film, the present invention is improved in that the anti-crack connector includes the first connecting film, the second connecting film and the anti-crack mesh, the anti-crack mesh is fixed between the first connecting film and the second connecting film, the first connecting film is fixedly connected to the inner wall of the heat-shrinkable outer layer, and the second connecting film is fixedly connected to the outer wall of the heat-shrinkable inner layer.

[0010] In order to improve the stability of the heat shrink tubing body and avoid cracking during the heat shrinking process by using the anti-crack mesh, the present invention is improved in that the anti-crack mesh is composed of two staggered spiral reinforcing wires.

[0011] The beneficial effects of this utility model are:

[0012] 1. The heat shrink tubing bodies of this utility model can be seamlessly connected through the matching of the outer and inner grooves, and meet the installation requirements of different lengths. At the same time, the detachable filler not only facilitates the connection between the heat shrink tubing bodies, but also ensures the flatness of each heat shrink tubing body during use. Combined with the evenly distributed conductive protrusions around the circumference, the sealing and electromagnetic shielding effects are effectively enhanced.

[0013] 2. This utility model, through its anti-crack connector, can prevent cracking during heat shrinkage, thereby improving the stability of its use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the detachable filler of this utility model;

[0016] Figure 3 This is a schematic diagram of the installation structure of the conductive protrusion of this utility model;

[0017] Figure 4 This is a structural schematic diagram of the anti-crack connector of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Heat shrink tubing body; 2. Removable filler; 201. Heat shrink filler ring; 202. Annular adhesive tape; 3. Outer groove; 4. Inner groove; 5. Heat shrink outer layer; 6. Heat shrink inner layer; 7. Crack-resistant connector; 701. First connecting film; 702. Second connecting film; 703. Crack-resistant mesh; 8. Conductive protrusion. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1-4 As shown, this embodiment provides an electromagnetic shielding heat shrink tubing with conductive protrusions on the inner wall, including a heat shrink tubing body 1 and a removable filler 2. The heat shrink tubing body 1 has an outer ring groove 3 and an inner ring groove 4 at both ends. When two heat shrink tubing bodies 1 are connected, one end of one heat shrink tubing body 1 is inserted into one end of the other heat shrink tubing body 1, so that the outer ring groove 3 and the inner ring groove 4 are matched, achieving a seamless connection during the heat shrinking process. This is suitable for installation requirements of different lengths. The removable filler 2 is installed in the outer ring groove 3 and the inner ring groove 4. Removing the removable filler 2 facilitates connection between the heat shrink tubing bodies. Installing the removable filler 2 ensures the flatness of the heat shrink tubing and enhances the overall sealing and electromagnetic shielding effect of the heat shrink tubing.

[0021] The heat shrink tubing body 1 includes a heat shrinkable outer layer 5, a heat shrinkable inner layer 6, a crack-resistant connector 7, and conductive protrusions 8. The crack-resistant connector 7 is fixedly disposed between the heat shrinkable outer layer 5 and the heat shrinkable inner layer 6. The conductive protrusions 8 are fixed to the inner wall of the heat shrinkable inner layer 6 and are circumferentially distributed on the heat shrinkable inner layer 6. The crack-resistant connector 7 is firmly disposed between the heat shrinkable outer layer 5 and the heat shrinkable inner layer 6, which can effectively prevent the heat shrink tubing body 1 from cracking during the heat shrinking process and enhance the stability of use. The conductive protrusions 8 are firmly fixed to the inner wall of the heat shrinkable inner layer 6 and are evenly distributed circumferentially along the heat shrinkable inner layer 6, which can comprehensively enhance the electromagnetic shielding performance of the heat shrink tubing.

[0022] The removable filler 2 includes a heat-shrinkable filler ring 201 and an annular adhesive tape 202. The annular adhesive tape 202 is adhered to the inner walls of the outer ring groove 3 and the inner ring groove 4. The heat-shrinkable filler ring 201 is fixed to the annular adhesive tape 202. The outer wall of the heat-shrinkable filler ring 201 located on the inner wall of the outer ring groove 3 is flush with the outer wall of the heat-shrinkable tube body 1, and the inner wall of the heat-shrinkable filler ring 201 located on the inner wall of the inner ring groove 4 is flush with the inner wall of the heat-shrinkable tube body 1. During installation, the annular adhesive tape 202 is tightly and firmly adhered to the inner walls of the outer ring groove 3 and the inner ring groove 4, providing stable support for the heat-shrinkable filler ring 201. The heat shrinkable filler ring 201 is precisely fixed on the annular adhesive tape 202. The outer wall of the heat shrinkable filler ring 201 located on the inner wall of the outer ring groove 3 is perfectly flush with the outer wall of the heat shrinkable tube body 1, while the inner ring is flush with the inner wall, ensuring that the overall appearance is flat and aesthetically pleasing and has a good seal. When disassembling, simply remove the annular adhesive tape 202 from the outer ring groove 3 and the inner ring groove 4 to remove the heat shrinkable filler ring 201.

[0023] The crack-resistant connector 7 includes a first connecting film 701, a second connecting film 702, and a crack-resistant mesh 703. The crack-resistant mesh 703 is fixed between the first connecting film 701 and the second connecting film 702. The first connecting film 701 is fixedly connected to the inner wall of the heat-shrinkable outer layer 5, and the second connecting film 702 is fixedly connected to the outer wall of the heat-shrinkable inner layer 6. The crack-resistant mesh 703 is composed of two staggered spiral reinforcing wires. The crack-resistant mesh 703 is firmly fixed between the first connecting film 701 and the second connecting film 702, serving as a skeleton to enhance stability, effectively dispersing stress, and greatly enhancing the crack resistance of the heat-shrinkable tubing.

[0024] Working principle: When connecting two heat shrink tubing bodies 1, one end is inserted to fit the outer groove 3 and inner groove 4, achieving a seamless connection to accommodate different lengths. The removable filler 2 facilitates connection after disassembly and ensures flatness and sealing after installation. In the crack-resistant connector 7, the crack-resistant mesh 703 uses interlaced spiral reinforcing wires to disperse stress and prevent cracking. The conductive protrusions 8 are distributed circumferentially, enhancing electromagnetic shielding in all directions. All components work together to ensure the stability, sealing, and good shielding performance of the heat shrink tubing.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. An electromagnetically shielded heat shrink tubing with conductive protrusions on its inner wall, characterized in that: It includes a heat shrink tubing body (1) and a removable filler (2). The heat shrink tubing body (1) has an outer ring groove (3) and an inner ring groove (4) at both ends. The removable filler (2) is installed in the outer ring groove (3) and the inner ring groove (4). The heat shrink tubing body (1) includes a heat shrink outer layer (5), a heat shrink inner layer (6), a crack-resistant connector (7), and a conductive protrusion (8). The crack-resistant connector (7) is fixedly disposed between the heat shrink outer layer (5) and the heat shrink inner layer (6). The conductive protrusion (8) is fixed on the inner wall of the heat shrink inner layer (6). The conductive protrusion (8) is circumferentially distributed on the heat shrink inner layer (6).

2. The electromagnetic shielding heat shrink tubing with conductive protrusions on the inner wall according to claim 1, characterized in that: The removable filler (2) includes a heat-shrinkable filler ring (201) and an annular adhesive tape (202). The annular adhesive tape (202) is bonded to the inner walls of the outer ring groove (3) and the inner ring groove (4), and the heat-shrinkable filler ring (201) is fixed to the annular adhesive tape (202).

3. The electromagnetic shielding heat shrink tubing with conductive protrusions on the inner wall according to claim 2, characterized in that: The outer wall of the heat-shrinkable filling ring (201) located on the inner wall of the outer ring groove (3) is flush with the outer wall of the heat-shrinkable tube body (1), and the inner wall of the heat-shrinkable filling ring (201) located on the inner wall of the inner ring groove (4) is flush with the inner wall of the heat-shrinkable tube body (1).

4. The electromagnetic shielding heat shrink tubing with conductive protrusions on the inner wall according to claim 1, characterized in that: The anti-crack connector (7) includes a first connecting film (701), a second connecting film (702), and an anti-crack mesh (703). The anti-crack mesh (703) is fixed between the first connecting film (701) and the second connecting film (702). The first connecting film (701) is fixedly connected to the inner wall of the heat-shrinkable outer layer (5), and the second connecting film (702) is fixedly connected to the outer wall of the heat-shrinkable inner layer (6).

5. The electromagnetic shielding heat shrink tubing with conductive protrusions on the inner wall according to claim 4, characterized in that: The anti-crack mesh (703) consists of two staggered spiral reinforcing wires.

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