Anti-electromagnetic sleeve

Abstract

The utility model discloses an anti-electromagnetic casing pipe, which comprises a pipe body, two ends of the pipe body are respectively provided with a convex ring and a plugging end, the inner side wall of the pipe body is bonded with a shielding layer, the inner side wall of the shielding layer is bonded with a plastic film, one end of the plastic film exceeds the plugging end and forms a necking section which shrinks inwards, and the other end of the plastic film extends out of the plugging end. And the necking section is inserted into the other end of the plastic film. The splicing of the pipe bodies is realized by inserting and fixing the inserting end in the convex ring, meanwhile, the plastic film is adhered to the inner side of the shielding layer of the pipe body, the shielding layer is prevented from being in direct contact with the penetrating wire through the plastic film, the reliability of the subsequent use of the penetrating wire is further ensured, and the necking section is arranged at one end of the plastic film, so that the sealing performance of the pipe body is improved. When the pipe bodies are spliced with each other, the necking section is inserted into the other end of the plastic film of another pipe body, so that the necking section provides guidance for the penetration of the wire, and the smoothness of the penetration of the wire is improved.

Description

Technical Field

[0001] This utility model relates to the field of sleeve technology, and in particular to an anti-electromagnetic sleeve. Background Technology

[0002] Electromagnetic shielding sleeves, also known as shielding sleeves, mainly utilize the mesh structure formed by the braided metal wires on their shielding layer to effectively absorb and reflect electromagnetic interference from the outside world, thereby reducing signal loss and preventing electromagnetic interference.

[0003] However, when wires are currently being run through electromagnetic shielding conduits, the metal wires on the shielding layer can easily scratch or even pierce the wires, which may affect the normal use of the wires. Furthermore, the wires are easily interfered with by the metal wires during the running process, which can affect the smoothness of the wire running and result in low running efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an anti-electromagnetic sleeve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An electromagnetic shielding sleeve includes a tube body with a protruding ring and a plug-in end at each end. The plug-in end can be inserted and fixed inside the protruding ring. A shielding layer is adhered to the inner wall of the tube body, and a plastic film is adhered to the inner wall of the shielding layer. A channel for a wire to pass through is opened on the inner circumference of the plastic film. One end of the plastic film extends beyond the plug-in end and forms an inwardly contracting section, which is inserted into the other end of the plastic film.

[0007] Preferably, the convex ring has an annular groove, and a heat-shrinkable ring is provided in the annular groove. One side of the heat-shrinkable ring is fixed to the convex ring, and the heat-shrinkable ring is sleeved on the outer periphery of the shielding layer.

[0008] Preferably, the convex ring has an insertion hole, a connecting rod is inserted into the insertion hole, and one side of the heat shrink ring is wrapped around the outside of the connecting rod.

[0009] Preferably, the convex ring is provided with an inwardly extending abutment ring, the insertion end is inserted into the convex ring and abuts against the abutment ring, and the ring groove is provided between the tube body and the abutment ring.

[0010] Preferably, the shielding layer and the plastic film extend beyond the plug-in end and the abutment ring respectively, and the outer periphery of the shielding layer is attached to the abutment ring.

[0011] The tube body can be in the shape of a bent tube.

[0012] The beneficial effects of this utility model are:

[0013] A convex ring and a plug-in end are respectively set at both ends of the tube body. The plug-in end is inserted and fixed to the convex ring to realize the assembly between tube bodies. At the same time, a plastic film is glued to the inside of the shielding layer of the tube body. The setting of the plastic film avoids direct contact between the shielding layer and the wire being threaded, thereby ensuring the reliability of the wire being threaded in the future. A constricted section is set at one end of the plastic film. When the tube bodies are assembled together, the constricted section is inserted into the other end of the plastic film of the other tube body. The constricted section provides guidance for the wire threading. Moreover, due to the smoothness of the plastic film itself, the smoothness of wire threading is further improved, thus ensuring the efficiency of wire threading operation. Attached Figure Description

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

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0017] In the figure: tube body 1, convex ring 11, insertion hole 111, connecting rod 112, ring groove 12, abutment ring 13, insertion end 14, shielding layer 2, plastic film 3, constricted section 31, heat shrink ring sleeve 4. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] In the description of this specification, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figures 1-3 As shown, an anti-electromagnetic sleeve includes a tube body 1. The two ends of the tube body 1 are respectively provided with a protruding ring 11 and a plug end 14. The plug end 14 can be inserted and fixed inside the protruding ring 11. By inserting and fixing the plug end 14 into the protruding ring 11, the tube body 1 can be assembled with other tube bodies 1. The tube body 1 can be in the shape of a bent tube, that is, straight-line assembly and turning assembly of multiple tube bodies 1 can be realized.

[0021] A shielding layer 2 is bonded to the inner wall of the tube body 1. The shielding layer 2 is formed by weaving metal wires, which is existing technology and will not be described in detail. The shielding layer 2 is a cylindrical shape with open ends, and the shielding layer 2 is bonded to the inner circumference of the tube body 1 with glue.

[0022] A plastic film 3 is adhered to the inner wall of the shielding layer 2. The plastic film 3 is also cylindrical with open ends. The size of the plastic film 3 is slightly smaller than that of the shielding layer 2. The plastic film 3 is then glued to the inner circumference of the shielding layer 2. The inner circumference of the plastic film 3 has a channel for the wire to pass through. That is, the wire passes through the inner circumference of the plastic film 3. The plastic film 3 is designed to prevent the shielding layer 2 from directly contacting the wire, that is, to prevent the wire from contacting the metal wire on the shielding layer 2 during the wire passing through, thus ensuring the reliability of the wire in subsequent use.

[0023] One end of the plastic film 3 extends beyond the insertion end 14 and forms an inwardly contracted constriction section 31. The constriction section 31 is inserted into the other end of the plastic film 3. Specifically, when the tube 1 is assembled with the tube 1, the constriction section 31 is inserted into the other end of the plastic film 3 of the other tube 1. Thus, the constriction section 31 provides guidance for the wire to be threaded, that is, the wire to be threaded enters the plastic film 3 of the other tube 1 from the constriction section 31. Furthermore, due to the smoothness of the plastic film 3 itself, the smoothness of the wire threading is further improved, thus ensuring the high efficiency of the wire threading operation.

[0024] A groove 12 is formed inside the convex ring 11, and a heat shrinkable sleeve 4 is provided in the groove 12. One side of the heat shrinkable sleeve 4 is fixed to the convex ring 11. The heat shrinkable sleeve 4 is sleeved on the outer periphery of the shielding layer 2. The heat shrinkable sleeve 4 can be heated by hot air from the outside of the convex ring 11, so that the heat shrinkable sleeve 4 shrinks and fixes the wires in the shielding layer 2 and plastic film 3 to the convex ring 11, so as to prevent the wires from shaking inside the tube 1, thereby improving the stability of the wires passing through the tube 1.

[0025] Specifically, the protruding ring 11 has an insertion hole 111, and a connecting rod 112 is inserted into the insertion hole 111. One side of the heat shrink sleeve 4 is wrapped around the outside of the connecting rod 112, so that when the heat shrink sleeve 4 is heated, one side of the heat shrink sleeve 4 can be limited to the connecting rod 112, that is, the wire inside the plastic film 3 is fixed to the connecting rod 112.

[0026] The convex ring 11 is provided with an inwardly extending abutment ring 13. The insertion end 14 is inserted into the convex ring 11 and abuts against the abutment ring 13. The annular groove 12 is provided between the tube body 1 and the abutment ring 13. The two ends of the shielding layer 2 and the plastic film 3 extend beyond the insertion end 14 and the abutment ring 13, respectively. The outer periphery of the shielding layer 2 is attached to the abutment ring 13. Thus, when the heat shrink sleeve 4 is heat-shrinked, the shielding layer 2 and the plastic film 3 on the abutment ring 13 side can slightly shrink into the tube body 1.

[0027] Furthermore, when the tube body 1 is inserted and assembled with the tube body 1, the shielding layer 2 that slightly extends beyond the insertion end 14 and the abutment ring 13 can abut against each other, and multiple shielding layers 2 abut against each other to form a long strip shielding layer 2, so as to better improve the shielding and protection effect on the wire.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-electromagnetic sleeve, comprising a sleeve body (1), characterized in that: The tube body (1) is provided with a convex ring (11) and a plug-in end (14) at both ends. The plug-in end (14) can be inserted and fixed inside the convex ring (11). A shielding layer (2) is adhered to the inner wall of the tube body (1). A plastic film (3) is adhered to the inner wall of the shielding layer (2). A channel for the wire to pass through is opened on the inner circumference of the plastic film (3). One end of the plastic film (3) extends beyond the plug-in end (14) and forms an inwardly contracted section (31). The contracted section (31) is inserted into the other end of the plastic film (3).

2. The electromagnetic shielding sleeve as described in claim 1, characterized in that: A groove (12) is provided in the convex ring (11), and a heat shrinkable sleeve (4) is provided in the groove (12). One side of the heat shrinkable sleeve (4) is fixed on the convex ring (11), and the heat shrinkable sleeve (4) is sleeved on the outer periphery of the shielding layer (2).

3. The anti-electromagnetic sleeve as described in claim 2, characterized in that: The protruding ring (11) has an insertion hole (111) and a connecting rod (112) is inserted into the insertion hole (111). One side of the heat shrink sleeve (4) wraps around the outside of the connecting rod (112).

4. The electromagnetic shielding sleeve as described in claim 2, characterized in that: The protruding ring (11) is provided with an inwardly extending abutment ring (13), the insertion end (14) is inserted into the protruding ring (11) and abuts against the abutment ring (13), and the ring groove (12) is provided between the tube body (1) and the abutment ring (13).

5. The anti-electromagnetic sleeve as described in claim 4, characterized in that: The shielding layer (2) and the plastic film (3) extend beyond the plug end (14) and the abutment ring (13) respectively, and the outer periphery of the shielding layer (2) is attached to the abutment ring (13).

6. The anti-electromagnetic sleeve as described in claim 1, characterized in that: The tube (1) may be in the shape of a bent tube.

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