A cable shield wire

Abstract

The present invention belongs to the technical field of basic electrical components of conductors or cables, and discloses a cable shielded wire, which includes a wire core and a shielding layer wrapped outside the wire core. An inner insulating layer is provided between the wire core and the shielding layer, and an outer insulating layer is wrapped outside the shielding layer. It also includes a connecting piece for realizing the connection of the wire core. The connecting piece includes a connecting sleeve. Installation grooves are provided at both ends of the connecting sleeve, and a connecting hole with both ends communicating with the installation grooves is provided in the middle of the connecting sleeve. Two pressing blocks are provided on the inner wall of the connecting hole. The pressing blocks are arc-shaped, and the inner arc surfaces of the pressing blocks are arranged oppositely. It also includes a driving member for driving the pressing blocks to slide radially along the connecting sleeve. The end of the wire core can pass through the installation groove and be located in the connecting hole. The present invention solves the problem that in the prior art, when connecting two cable shielded wires, it is necessary to peel off the shielding layer and then electrically connect the wire cores of the two cable shielded wires, resulting in the wire cores being exposed outside, making the electromagnetic shielding ability of the entire cable shielded wire relatively weak.

Description

Technical Field

[0001] The present invention belongs to the technical field of basic electrical components of conductors or cables, and particularly relates to a cable shield wire. Background Art

[0002] A cable shield wire is a transmission line that uses a metal mesh braid layer to wrap the signal wire. By grounding the shield layer of the shield wire, external interference signals can be introduced into the ground by this layer, thereby reducing the influence of the external electromagnetic field on the power supply or communication line. The cable shield wire also has the function of preventing the line from radiating electromagnetic energy outward.

[0003] When the cable shield wire is in use, according to actual needs, the cable shield wires need to be connected for use. When connecting the cable shield wires, the shield layers of the two connected cable shield wires need to be peeled off, and the two core wires are electrically connected. However, this method will expose the core wires to the outside, resulting in a relatively weak electromagnetic shielding ability of the entire cable shield wire. Summary of the Invention

[0004] The present invention aims to provide a cable shield wire to solve the problem in the prior art that when connecting two cable shield wires, the shield layer needs to be peeled off, and then the cores of the two cable shield wires are electrically connected. Therefore, the cores are exposed outside, resulting in a relatively weak electromagnetic shielding ability of the entire cable shield wire.

[0005] To achieve the above object, the present invention adopts the following technical solution: A cable shield wire includes a core wire and a shield layer wrapped outside the core wire. An inner insulating layer is provided between the core wire and the shield layer, and an outer insulating layer is wrapped outside the shield layer; it further includes a connecting member for realizing the connection of the core wires. The connecting member includes a connecting sleeve. Installation grooves are provided at both ends of the connecting sleeve, and a connecting hole is provided in the middle of the connecting sleeve, with both ends of the connecting hole communicating with the installation grooves respectively; two pressing blocks are provided on the inner wall of the connecting hole. The pressing blocks are arc-shaped, and the inner arc surfaces of the pressing blocks are arranged opposite to each other; it further includes a driving member for driving the pressing blocks to slide radially along the connecting sleeve; the end of the core wire can pass through the installation groove and be located in the connecting hole.

[0006] In the above technical solution, the setting of the inner insulating layer and the outer insulating layer can improve the shielding effect and insulating effect of the cable shield wire. And the setting of the connecting member can avoid the situation where the core wires are exposed outside when connecting two cable shield wires, thereby avoiding affecting the electromagnetic shielding effect of the cable shield wire.

[0007] Insert the core wires of the two cable shield wires to be connected into the connecting hole respectively through the installation grooves at both ends, and drive the pressing blocks to move relative to each other through the driving member, so as to clamp and fix the two core wires, thereby realizing the electrical connection of the core wires, and further being able to complete the connection of the two cable shield wires. At this time, the exposed core wires are wrapped with a connecting sleeve, which can play an insulating and shielding role.

[0008] In another preferred embodiment of the present invention, a plurality of communicating vessels are uniformly arranged on the outer periphery of the mounting groove on the connecting sleeve. The communicating vessels are U-shaped, and both ends of the communicating vessels are communicated with the mounting groove. Sliding plates are slidably connected inside both ends of the communicating vessels, and a communicating liquid is filled between the sliding plates in the communicating vessels; the sliding plates are respectively fixed with moving rods and clamping rods. A driving plate is slidably connected in the mounting groove. The driving plate is located between the moving rod and the clamping rod, and a through hole for the wire core to pass through is provided on the driving plate.

[0009] In another preferred embodiment of the present invention, the driving member includes a sliding groove located inside the connecting sleeve and a driving rod slidably connected in the sliding groove. One end of the sliding groove is communicated with the mounting groove, and the driving rod is fixed to the driving rod; the end of the driving rod away from the mounting groove is in contact with the pressing block, and the end of the driving rod close to the pressing block is a wedge surface. A spring is provided between the pressing block and the inner wall of the connecting hole.

[0010] In another preferred embodiment of the present invention, a limiting groove communicated with the connecting hole is provided on the connecting sleeve. A limiting block is fixed on the pressing block, and the limiting block is slidably connected in the limiting groove. The limiting groove is also communicated with the sliding groove, and the driving rod abuts against the limiting block.

[0011] In another preferred embodiment of the present invention, an elastic member is provided between the driving plate and the mounting groove.

[0012] In another preferred embodiment of the present invention, a positioning groove communicated with the mounting groove is provided between the communicating vessels and the connecting hole inside the connecting sleeve. A positioning block is slidably connected in the positioning groove. An elastic member is provided between the positioning block and the positioning groove. The end of the positioning block located in the mounting groove is a wedge surface.

[0013] In another preferred embodiment of the present invention, a magnetic layer is provided on the positioning block.

[0014] In another preferred embodiment of the present invention, an annular groove communicated with the mounting groove is provided inside the connecting sleeve. A sealing airbag is provided in the annular groove, and an air filling member for filling air into the sealing airbag is also provided.

[0015] In another preferred embodiment of the present invention, the air filling member includes an air filling groove located inside the connecting sleeve. A pressing plate is slidably connected in the air filling groove. A push rod is fixed between the pressing plate and the driving plate. The push rod is slidably connected to the connecting sleeve. A pressure stabilizing port communicated with the side of the air filling groove close to the mounting groove is provided on the connecting sleeve. A diversion channel with both ends respectively communicated with the sealing airbag and the end of the air filling groove away from the pressure stabilizing port is also provided inside the connecting sleeve.

[0016] In another preferred embodiment of the present invention, a limiting plate is provided between the sealing airbag and the communicating vessels in the mounting groove. The limiting plate is in contact with the sealing airbag, and a through hole for the shielding wire to pass through is provided on the limiting plate.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a longitudinal sectional view of an embodiment of the present application.

[0020] Figure 2 is a longitudinal sectional view of a connecting member in an embodiment of the present application.

[0021] Reference numerals in the drawings of the specification include: wire core 1, inner insulating layer 2, shielding layer 3, outer insulating layer 4, connecting sleeve 5, mounting groove 6, connecting hole 7, limiting groove 8, limiting block 9, pressing block 10, sliding groove 11, driving rod 12, communicating vessel 13, sliding plate 14, moving rod 15, clamping rod 16, driving plate 17, positioning groove 18, positioning block 19, sealing airbag 20, limiting plate 21, gas filling groove 22, pressing plate 23, voltage stabilizing port 24, diversion channel 25, push rod 26. Detailed Description of the Embodiments

[0022] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0024] In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it may be a mechanical connection or an electrical connection, or may be the communication inside two elements. It may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The present invention provides a cable shielded wire, asFigure 1 As shown, in a preferred embodiment of the present invention, it includes a core 1, an inner insulating layer 2, a shielding layer 3, and an outer insulating layer 4 arranged in sequence from the inside to the outside. The core 1 is a cable formed by stranding multiple conductors. The conductors used in the core 1 are made of copper, aluminum, or alloys of these metals, and the specific materials used are selected according to actual requirements. The diameter of the conductors used in the core 1 is 0.08 mm - 0.15 mm, and the specific dimensions are selected according to actual requirements, which can reduce the probability of breakage after repeated bending during use.

[0026] The shielding layer 3 is woven from polyarylate fibers plated with copper or tin; both the inner insulating layer 2 and the outer insulating layer 4 are made of epoxy resin.

[0027] Combined Figure 2 As shown, it also includes a connector for connecting the cores 1 of two cable shielding wires. The connector includes a connecting sleeve 5. Both ends of the connecting sleeve 5 are provided with installation grooves 6, and a connecting hole 7 is provided in the middle of the connecting sleeve 5, with both ends of the connecting hole 7 communicating with the two installation grooves 6 respectively. The upper and lower parts of the connecting sleeve 5 are also provided with limiting grooves 8 communicating with the connecting hole 7. A limiting block 9 is vertically slidably connected in the limiting groove 8. One end of the limiting block 9 is located in the connecting hole 7, and a pressing block 10 is provided at the end of the limiting block 9 located in the connecting hole 7. The pressing block 10 is arc-shaped, and the inner arc surfaces of the two pressing blocks 10 are arranged opposite to each other. A spring is provided between the outer arc surface of the pressing block 10 and the inner wall of the connecting hole 7. It also includes two driving members for respectively driving the two pressing blocks 10 to move.

[0028] The structures of the connecting sleeve 5 at the part of the installation groove 6 are the same, and now the structure on the left side will be described. A plurality of communicating devices 13 are evenly arranged on the outer circumference of the connecting sleeve 5 at the installation groove 6. In this embodiment, 3 communicating devices 13 are provided. The communicating device 13 is U-shaped, and both ends of the communicating device 13 communicate with the installation groove 6.

[0029] A sliding plate 14 is vertically slidably connected in the vertical part of the communicating device 13. A communicating liquid is filled between the sliding plates 14 in the communicating device 13. In this embodiment, the communicating liquid used is oil. A spring is provided between the sliding plate 14 and the horizontal part of the communicating device 13. A clamping rod 16 is fixed on the left sliding plate 14, and a moving rod 15 is fixed on the right sliding plate 14. When the connector is not in use, the moving rod 15 is located in the installation groove 6, and the clamping rod 16 is located in the communicating device 13. The left end face of the moving rod 15 is a wedge surface.

[0030] A driving plate 17 is also horizontally slidably connected in the installation groove 6. When the connector is not in use, the driving plate 17 is located between the moving rod 15 and the clamping rod 16. An elastic member is provided between the driving plate 17 and the right end of the installation groove 6. In this embodiment, the elastic member is selected as a spring. A through hole is also provided on the driving plate 17, which can enable the core 1 to pass through the through hole and be inserted into the connecting hole 7.

[0031] The driving member includes a sliding groove 11 located inside the connecting sleeve 5 and a driving rod 12 that is horizontally slidably connected inside the sliding groove 11. The two driving members are respectively located on the upper and lower sides. The two ends of the sliding groove 11 are respectively communicated with the installation groove 6 and the limiting groove 8. One end of the driving rod 12 is fixed to the driving plate 17. The upper driving rod 12 is fixed to the left driving plate 17, and the lower driving rod 12 is fixed to the right driving plate 17. The other end of the driving rod 12 is a wedge surface and is in contact with one end of the limiting block 9 away from the pressing block 10.

[0032] On the right side of the communicating device 13 inside the connecting sleeve 5, there is a positioning groove 18. In this embodiment, there are two positioning grooves 18. The positioning groove 18 is communicated with the installation groove 6. A positioning block 19 is vertically slidably connected inside the positioning groove 18. An elastic member is arranged between the positioning block 19 and the positioning groove 18. In this embodiment, the elastic member is selected as a spring. All the springs used in this embodiment are compression springs, and the specific model is selected according to actual requirements. The left side surface of the positioning block 19 is a wedge surface, and a magnetic layer is arranged at one end of the positioning block 19 located inside the positioning groove 18. In this embodiment, the magnetic layer is selected as an iron powder layer.

[0033] On the left side of the communicating device 13 inside the connecting sleeve 5, there is an annular groove, which is communicated with the installation groove 6. An annular sealing airbag 20 is arranged inside the annular groove. The inner ring of the installation groove 6 is also fixed with a limiting plate 21, and the limiting plate 21 is in contact with the right side of the sealing airbag 20 to limit the sealing airbag 20. The limiting plate 21 is provided with a through hole coaxially arranged with the through hole, which can allow the cable shielding wire to pass through.

[0034] It also includes two gas filling members that respectively fill the sealing airbags 20 inside the two installation grooves 6 with gas. The left gas filling member is located at the lower side, and the right gas filling member is located at the upper side. Taking the left gas filling member as an example, the gas filling member includes a gas filling groove 22 arranged inside the connecting sleeve 5. A pressing plate 23 is horizontally slidably connected inside the gas filling groove 22. The connecting sleeve 5 is provided with a pressure stabilizing port 24 that is communicated with the left part of the pressing plate 23 in the gas filling groove 22. Inside the connecting sleeve 5, there is also a diversion channel 25 with two ends respectively communicated with the right end of the gas filling groove 22 and the sealing airbag 20. A push rod 26 is fixed to the left side of the pressing plate 23. The right end of the push rod 26 is fixed to the driving plate 17, and the push rod 26 is horizontally slidably connected with the connecting sleeve 5.

[0035] The specific implementation process is as follows:

[0036] When connecting the shielding wires of two cables, strip the inner insulating layer 2, shielding layer 3, and outer insulating layer 4 at one end of the two cable shielding wires to expose the wire core 1. Then, pass the exposed wire core 1 through the through holes in the sealing airbag 20 and the limiting plate 21, and the through hole in the driving plate 17 in sequence. Then, move the two cable shielding wires relative to each other. The inner insulating layer 2, shielding layer 3, and outer insulating layer 4 outside the cable shielding wires are blocked by the driving plate 17 and will not pass through the through hole. Therefore, it will drive the driving plate 17 to move relative to each other, and insert the wire core 1 into the connection hole 7.

[0037] During this process, the driving plate 17 will drive the driving rod 12 to move, so that the wedge surface of the driving rod 12 gradually squeezes the limiting block 9, realizing the relative movement of the two pressing blocks 10, thereby wrapping and clamping the two wire cores 1, and can realize the fixation and electrical connection of the wire core 1.

[0038] Moreover, when the driving plate 17 moves relative to each other, it will squeeze the moving rod 15, so that the moving rod 15 slides into the connector 13. Furthermore, the connecting liquid squeezes another slide plate 14 to drive the clamping rod 16 to slide out of the connector 13 and gradually approach the cable shielding wire to clamp and fix the cable shielding wire. And during the relative movement of the driving plate 17, it will gradually squeeze the wedge surface on the positioning block 19, so that the positioning block 19 slides into the positioning groove 18, realizing the sliding of the driving plate 17. After the driving plate 17 slides past the positioning block 19, the extrusion force on the positioning block 19 disappears. Therefore, it will reset under the action of the spring to limit and fix the driving plate 17. Through the limitation of the positioning block 19, the position of the driving plate 17 can be kept unchanged, so that the positions of the pressing block 10 and the clamping rod 16 can be kept unchanged, realizing the fixation of the wire core 1 and the cable shielding wire and avoiding falling off.

[0039] During the entire connection process, the driving plate 17 moves, driving the push rod 26 and the pressing plate 23 to move, and can squeeze the gas in the gas adding groove 22 into the sealing airbag, making the sealing airbag expand to close the end of the installation groove 6, playing a role in waterproofing.

[0040] When it is necessary to disconnect the two cable shielding wires, set a magnet on the outside of the connecting sleeve 5 to make the magnet attract the magnetic layer on the positioning block 19. Therefore, the positioning block 19 will slide into the positioning groove 18, and the limiting force on the driving plate 17 disappears. The driving plate 17 will reset under the action of the spring, and then loosen the wire core 1 and the cable shielding wire, facilitating the removal of the two cable shielding wires.

[0041] In the description of this specification, the descriptions referring to terms such as "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cable shielded wire, comprising a wire core and a shielding layer coated outside the wire core, characterized in that: An inner insulating layer is provided between the core and the shielding layer, and an outer insulating layer is wrapped around the shielding layer; it further includes a connecting piece for connecting the cores. The connecting piece includes a connecting sleeve. Installation grooves are provided at both ends of the connecting sleeve, and a connecting hole with both ends communicating with the installation grooves is provided in the middle of the connecting sleeve; two pressing blocks are provided on the inner wall of the connecting hole. The pressing blocks are arc-shaped, and the inner arc surfaces of the pressing blocks are arranged opposite to each other; it further includes a driving piece for driving the pressing blocks to slide radially along the connecting sleeve; the end of the core can pass through the installation groove and be located in the connecting hole; a plurality of communicating devices are evenly arranged on the connecting sleeve on the outer circumference of the installation groove. The communicating devices are U-shaped, and both ends of the communicating devices are communicated with the installation groove. Sliding plates are slidably connected inside both ends of the communicating devices, and a communicating liquid is injected between the sliding plates in the communicating devices; the sliding plates are respectively fixed with a moving rod and a clamping rod. A driving plate is slidably connected in the installation groove. The driving plate is located between the moving rod and the clamping rod, and a through hole for the core to pass through is provided on the driving plate; the driving piece includes a sliding groove located inside the connecting sleeve and a driving rod slidably connected in the sliding groove. One end of the sliding groove is communicated with the installation groove, and the driving rod is fixed to the driving rod; the end of the driving rod away from the installation groove is in contact with the pressing block, and the end of the driving rod close to the pressing block is a wedge surface. A spring is provided between the pressing block and the inner wall of the connecting hole.

2. A cable shielded wire according to claim 1, characterized in that: A limiting groove communicated with the connecting hole is provided on the connecting sleeve. A limiting block is fixed on the pressing block, and the limiting block is slidably connected in the limiting groove. The limiting groove is also communicated with the sliding groove, and the driving rod abuts against the limiting block.

3. A cable shielded wire according to claim 2, characterized in that: An elastic member is provided between the driving plate and the installation groove.

4. A cable shielded wire according to claim 3, characterized in that: A positioning groove communicated with the installation groove is provided inside the connecting sleeve between the communicating device and the connecting hole. A positioning block is slidably connected in the positioning groove. An elastic member is provided between the positioning block and the positioning groove, and the end of the positioning block located in the installation groove is a wedge surface.

5. A cable shield wire according to claim 4, characterized in that: A magnetic layer is provided on the positioning block.

6. A cable shielded wire according to claim 5, characterized in that: An annular groove communicated with the installation groove is provided inside the connecting sleeve. A sealing airbag is provided in the annular groove, and an air filling member for filling gas into the sealing airbag is also provided.

7. A cable shielded wire according to claim 6, characterized in that: The air filling member includes an air filling groove located inside the connecting sleeve. A pressing plate is slidably connected in the air filling groove. A push rod is fixed between the pressing plate and the driving plate. The push rod is slidably connected to the connecting sleeve. A pressure stabilizing port communicated with the side of the air filling groove close to the installation groove is provided on the connecting sleeve. A diversion channel with both ends respectively communicated with the sealing airbag and the end of the air filling groove away from the pressure stabilizing port is also provided inside the connecting sleeve.

8. A cable shield wire according to claim 7, characterized in that: A limiting plate is provided in the installation groove between the sealing airbag and the communicating device. The limiting plate is in contact with the sealing airbag, and a through hole for the shielding wire to pass through is provided on the limiting plate.

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