Special cable with high shielding performance and manufacturing method therefor

Abstract

A special cable with high shielding performance and a manufacturing method therefor. The special cable comprises a conductor and a shielding layer arranged on an outer side of the conductor, wherein a buffer layer I is provided on an outer side of an armor layer, and a buffer layer II is provided on an outer side of the buffer layer I; a plurality of buffer structures are provided between the buffer layer I and the buffer layer II; and an outer wrapping layer is provided on an outer side of the buffer layer II. Each buffer structure comprises an inner base I, an inner base II, and a movable column, wherein the inner base I and the inner base II are fixed to the surfaces of the buffer layer II and buffer layer I, respectively; and the inside of the inner base II is provided with an internal recess, and the movable column is movably mounted in the internal recess. Adding the buffer layer I, the buffer layer II, and the buffer structures between the armor layer and the outer wrapping layer can provide an effective buffering protection effect during subsequent use of the cable, ensuring that components on an inner side of the cable are not easily damaged by compression, thereby prolonging the service life of the cable in special conditions.

Description

A high-shielding special cable and its manufacturing method Technical Field

[0001] The present invention belongs to the technical field of special cables, and in particular relates to a high-shielding special cable and a manufacturing method thereof. Background Art

[0002] Special cables refer to cables used in special occasions and environments. They are generally required to have high shielding and protection functions. That is, a shielding layer is designed inside the cable to prevent problems such as signal interference. For example, the existing patent with publication number "CN104252903B" discloses "a shielded cable, which comprises, from the inside out, a conductor group, an insulation layer, and an outer sheath. A shielding layer is formed by a copper foil with a mesh of a predetermined thickness and width wrapped around the outer surface of the insulation layer in the axial direction of the cable..." It can be seen that the application describes a special cable with a shielding layer;

[0003] However, in actual use, the high-shielded special cable in the prior art has no effective buffer protection structure designed inside the cable, which causes the cable to be easily squeezed to the inner conductor or shielding layer when squeezed by external force, and no effective buffer protection is obtained, which reduces the service life of the cable under some extreme working conditions. Therefore, the present invention needs to improve and optimize the existing high-shielded special cable to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a high-shielding special cable and a manufacturing method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-shielded special cable, comprising a conductor and a shielding layer arranged on the outside of the conductor, an insulating layer is arranged on the outside of the shielding layer, an armor layer is arranged on the outside of the insulation layer, a buffer layer 1 is arranged on the outside of the armor layer, and a buffer layer 2 is arranged on the outside of the buffer layer 1, a plurality of buffer structures are arranged between the buffer layer 1 and the buffer layer 2, an outer sheath is arranged on the outside of the buffer layer 2, the buffer structure comprises an inner seat 1, an inner seat 2 and a movable column, the inner seat 1 and the inner seat 2 are respectively fixed on the surfaces of the buffer layer 2 and the buffer layer 1, an inner groove is opened inside the inner seat 2, and a movable column is arranged in the inner groove. The top end of the elliptical elastic member is installed in the top groove, and the bottom end of the elliptical elastic member is installed in the inner groove. Both ends of the elliptical elastic member are provided with an integrated limit block, and the inner wall of the top groove and the inner wall of the inner groove are provided with a limit groove, and the limit block is inserted into the limit groove.

[0006] Preferably, it also includes a connecting structure, which is arranged between the insulating layer and the armor layer. The connecting structure includes a plurality of connecting blocks installed between the insulating layer and the armor layer. The surfaces of the insulating layer and the armor layer are provided with T-shaped mounting grooves, and the two ends of the connecting block are respectively installed in two T-shaped mounting grooves. The connecting structure also includes positioning grooves and positioning protrusions. Both ends of the connecting block are provided with integrated positioning protrusions, and positioning grooves are provided on the inner walls of the T-shaped mounting grooves.

[0007] A method for manufacturing the high-shield special cable comprises the following steps:

[0008] Step 1: Use a conductor with a diameter of ≤0.8mm as the core wire to make a conductor with a diameter of ≤0.8mm;

[0009] Step 2: Wrap shielding material (non-metallic conductor and metal wire) around the outer diameter of the conductor to create a shielding layer;

[0010] Step 3: Apply insulating material (polyethylene, polyvinyl chloride or other insulating materials) between the conductor and the shielding layer to form an insulating layer;

[0011] Step 4: Wrap the armor layer material (steel tape, aluminum tape or other armor material) around the outer diameter of the insulation layer to form an armor layer, and install a connecting structure between the insulation layer and the armor layer;

[0012] Step 5: Add buffer layer 1 and buffer layer 2 on the outer diameter of the armor layer, and install a buffer structure between buffer layer 1 and buffer layer 2. Finally, make an outer sheath on the outside of buffer layer 2 to make a high-shielding special cable.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the present invention improves and optimizes the high-shielded special cable in the prior art, and by adding buffer layer 1, buffer layer 2 and a buffer structure between the armor layer and the outer sheath, it can effectively play a buffering and protective role in the subsequent use of the cable, ensuring that the inner components of the cable will not be easily damaged by extrusion, extending the service life of the cable under special circumstances, and under the action of the connecting structure, the structure inside the cable is also made more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a cross-sectional view of the present invention;

[0015] FIG2 is a partial enlarged view of the buffer structure in FIG1 of the present invention;

[0016] FIG3 is a partial enlarged view of area A in FIG2 of the present invention;

[0017] FIG4 is a partial enlarged view of the connection structure in FIG1 of the present invention;

[0018] FIG5 is a partial enlarged view of area B in FIG4 of the present invention;

[0019] In the figure: 1. Conductor; 2. Shielding layer; 3. Insulating layer; 4. Connection structure; 41. Connection block; 42. Positioning groove; 43. Positioning protrusion; 5. Armor layer; 6. Buffer layer 1; 7. Buffer layer 2; 8. Buffer structure; 81. Inner seat 1; 82. Inner seat 2; 83. Movable column; 84. Inner groove; 85. Elliptical elastic part; 86. Top groove; 87. Limit block; 88. Limit groove; 89. Side guide block; 9. Outer covering. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] Please refer to Figures 1 to 3, which are the first embodiment of the present invention. This embodiment provides a technical solution: a high-shielded special cable, including a conductor 1 and a shielding layer 2 arranged on the outside of the conductor 1, an insulating layer 3 is arranged on the outside of the shielding layer 2, an armor layer 5 is arranged on the outside of the insulation layer 3, a buffer layer 1 6 is arranged on the outside of the armor layer 5, and a buffer layer 2 7 is arranged on the outside of the buffer layer 1 6, a plurality of buffer structures 8 are arranged between the buffer layer 1 6 and the buffer layer 2 7, an outer sheath 9 is arranged on the outside of the buffer layer 2 7, and the buffer structure 8 includes an inner seat 81 , inner seat 2 82 and movable column 83, inner seat 1 81 and inner seat 2 82 are respectively fixed on the surface of buffer layer 2 7 and buffer layer 1 6, inner seat 2 82 is provided with inner groove 84, and movable column 83 is movably installed in inner groove 84, the top of movable column 83 extends to the outside of inner seat 2 82 and is fixed to inner seat 1 81, buffer structure 8 also includes side guide blocks 89 fixed on both sides of the bottom end of movable column 83, and the inner walls on both sides of the inner groove 84 are provided with side guide grooves corresponding to the side guide blocks 89, and the side guide blocks 89 are slidably located in the side guide grooves, so that the movable column 83 can be moved. 83 will not separate from the inner seat 2 82, the buffer structure 8 also includes an elliptical elastic member 85, a top groove 86 is provided at the bottom of the movable column 83, the elliptical elastic member 85 is made of rubber material and has elasticity, the top end of the elliptical elastic member 85 is installed in the top groove 86, and the bottom end of the elliptical elastic member 85 is installed in the inner groove 84, so that when the subsequent cable is squeezed by external force, the buffer layer 2 7 will be squeezed inward, and the movable column 83 will retract into the inner groove 84, and the elliptical elastic member 85 will be squeezed and deformed, thereby effectively responding to the external squeezing force. The elliptical elastic member 85 can be effectively buffered to protect the cable. When the external extrusion force disappears, the elliptical elastic member 85 will recover under its own elasticity and push the movable column 83 back, so that the movable column 83 pushes the buffer layer 7 back, thereby completing the recovery of the cable. Both ends of the elliptical elastic member 85 are provided with an integrated limit block 87, and the inner wall of the top groove 86 and the inner wall of the inner groove 84 are provided with a limit groove 88 corresponding to the limit block 87. The limit block 87 is inserted into the limit groove 88, so that the elliptical elastic member 85 will not deviate, thereby ensuring stability.

[0023] A method for manufacturing a high-shield special cable comprises the following steps:

[0024] Step 1: Using a 0.8 mm conductor as a core wire, make a conductor 1 with a diameter of 0.8 mm;

[0025] Step 2: Wrap a non-metallic conductor and a metal wire around the outer diameter of the conductor 1 to form a shielding layer 2;

[0026] Step 3: Coat the insulating material polyethylene between the conductor 1 and the shielding layer 2 to form an insulating layer 3;

[0027] Step 4: Wrap the armor layer material steel strip around the outer diameter of the insulation layer 3 to form an armor layer 5, and install a connecting structure 4 between the insulation layer 3 and the armor layer 5;

[0028] Step 5. Add buffer layer 1 6 and buffer layer 2 7 on the outer diameter of the armor layer 5. Both buffer layer 1 6 and buffer layer 2 7 are made of polytetrafluoroethylene material, and a buffer structure 8 is installed between buffer layer 1 6 and buffer layer 2 7. Finally, an outer sheath 9 is made of polyurethane material on the outside of buffer layer 2 7 to make a high-shielded special cable.

[0029] Example 2

[0030] Please refer to Figures 1 to 5, which are the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that a connecting structure 4 is provided to serve as an auxiliary connection between the insulating layer 3 and the armor layer 5 to ensure the stability of the cable.

[0031] Specifically, it also includes a connecting structure 4, which is arranged between the insulating layer 3 and the armor layer 5. The connecting structure 4 includes a plurality of connecting blocks 41 installed between the insulating layer 3 and the armor layer 5. The surfaces of the insulating layer 3 and the armor layer 5 are provided with T-shaped mounting grooves corresponding to the connecting blocks 41. The two ends of the connecting block 41 are respectively installed in the two T-shaped mounting grooves. The insulating layer 3 and the armor layer 5 can be stably connected together through a plurality of connecting blocks 41 to ensure the stability between the inner layers of the cable. The connecting structure 4 also includes positioning grooves 42 and positioning protrusions 43. Both ends of the connecting block 41 are provided with integrated positioning protrusions 43. The inner wall of the T-shaped mounting groove is provided with a positioning groove 42 for the positioning protrusion 43 to be embedded. The connecting block 41 and the positioning protrusion 43 are both made of rubber material and are elastic, and the positioning protrusion 43 ensures the installation stability of the connecting block 41 and prevents the connecting block 41 from slipping out of the T-shaped mounting groove.

[0032] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-shielded special cable, comprising a conductor (1) and a shielding layer (2) arranged outside the conductor (1), an insulating layer (3) being arranged outside the shielding layer (2), and an armor layer (5) being arranged outside the insulating layer (3), characterized in that: A buffer layer 1 (6) is arranged on the outside of the armor layer (5), and a buffer layer 2 (7) is arranged on the outside of the buffer layer 1 (6); a plurality of buffer structures (8) are arranged between the buffer layer 1 (6) and the buffer layer 2 (7); an outer cladding layer (9) is arranged on the outside of the buffer layer 2 (7); the buffer structure (8) comprises an inner seat 1 (81), an inner seat 2 (82) and a movable column (83); the inner seat 1 (81) and the inner seat 2 (82) are respectively fixed on the surfaces of the buffer layer 2 (7) and the buffer layer 1 (6); an inner groove (84) is provided inside the inner seat 2 (82), and a movable column (83) is movably installed in the inner groove (84); the top end of the movable column (83) extends to the outside of the inner seat 2 (82) and is fixed to the inner seat 1 (81).

2. A high-shielded special cable according to claim 1, characterized in that: The buffer structure (8) further comprises side guide blocks (89) fixed on both sides of the bottom end of the movable column (83); inner walls on both sides of the inner groove (84) are provided with side sliding grooves corresponding to the side guide blocks (89); and the side guide blocks (89) are slidably located in the side sliding grooves.

3. A high-shielded special cable according to claim 1, characterized in that: The buffer structure (8) further comprises an elliptical elastic member (85), a top groove (86) is provided at the bottom of the movable column (83), the top end of the elliptical elastic member (85) is installed in the top groove (86), and the bottom end of the elliptical elastic member (85) is installed in the inner groove (84).

4. A high-shielded special cable according to claim 3, characterized in that: Both ends of the elliptical elastic member (85) are provided with integrated limit blocks (87), the inner wall of the top groove (86) and the inner wall of the inner groove (84) are provided with limit grooves (88), and the limit blocks (87) are inserted into the limit grooves (88).

5. A high-shielded special cable according to claim 1, characterized in that: It also comprises a connecting structure (4), wherein the connecting structure (4) is arranged between the insulating layer (3) and the armor layer (5).

6. A high-shielded special cable according to claim 5, characterized in that: The connection structure (4) comprises a plurality of connection blocks (41) installed between the insulating layer (3) and the armor layer (5), the surfaces of the insulating layer (3) and the armor layer (5) are both provided with T-shaped installation grooves, and the two ends of the connection block (41) are respectively installed in two T-shaped installation grooves.

7. A high-shielded special cable according to claim 6, characterized in that: The connection structure (4) further comprises a positioning groove (42) and a positioning protrusion (43), both ends of the connection block (41) are provided with an integrated positioning protrusion (43), and the inner wall of the T-shaped installation groove is provided with a positioning groove (42).

8. A method for manufacturing a high-shielded special cable as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Using a conductor with a diameter of ≤0.8 mm as a core wire, a conductor with a diameter of ≤0.8 mm (1) is made; Step 2: Wrapping the shielding material around the outer diameter of the conductor (1) to form a shielding layer (2); Step 3: coating an insulating material between the conductor (1) and the shielding layer (2) to form an insulating layer (3); Step 4: Winding the armor layer material around the outer diameter of the insulating layer (3) to form an armor layer (5), and installing a connecting structure (4) between the insulating layer (3) and the armor layer (5); Step 5: Add buffer layer 1 (6) and buffer layer 2 (7) on the outer diameter of the armor layer (5), and install a buffer structure (8) between buffer layer 1 (6) and buffer layer 2 (7), and finally make an outer sheath (9) on the outer side of buffer layer 2 (7) to make a high-shielded special cable.

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