Composite stranded wire reinforced core cable and preparation method thereof

Abstract

The invention discloses a composite stranded wire reinforced core cable and a preparation method thereof, and belongs to the technical field of cables. The composite stranded wire reinforced core cable comprises a cable body and a fixing block, an anti-abrasion assembly is assembled on the outer wall of the cable body, the inner periphery of the anti-abrasion assembly is attached to the cable body to reduce abrasion of the surface of the cable body, and a fixing assembly is installed on the surface of the fixing block. By pulling the cable strap, the cable strap extrudes the elastic limiting sleeve, after being extruded, the elastic limiting sleeve shrinks inwards and extrudes the cable, meanwhile, the limiting protruding blocks can extrude the surface of the cable and separate the multiple sets of cables, and therefore fixing of the cable is completed, when the electric bicycle steers, the contact plate can be driven to rotate synchronously, and the contact plate is driven to rotate synchronously. At the moment, the contact plate slides in the fixing sleeve through the sliding block, the movement of the cable is buffered, the tensile tension of the cable is reduced, meanwhile, connection between the cable and the fixing sleeve is kept stable, abrasion of the surface of the cable is reduced, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field related to cables, and in particular to a composite stranded wire reinforced core cable and a preparation method thereof. Background Art

[0002] In recent years, electric bicycles have played an increasingly important role in people's daily lives. Batteries, motors, controllers, sensors, displays, etc. are all components of the electronic system of electric bicycles, and the components are connected through cables. With the increase of electronic components in electric bicycles, there are higher requirements for the reliability, protection level and integration of the connection of electrical components. Therefore, the importance of vehicle cables in the electrical system of electric bicycles is increasing. Composite stranded wire reinforced core cable is a special cable with the advantages of light weight, high strength, high temperature resistance, corrosion resistance, low line loss, low sagging and small thermal expansion coefficient. When it is used in electric bicycles, it can meet the connection requirements between the components in the electrical system of electric bicycles.

[0003] However, the existing electric bicycles mostly adopt an exposed, hidden or semi-hidden wiring design in the layout of the lines; for example, the control wires are usually inserted from the reserved holes on the handlebar cross tube, and the power cord is inserted from the middle of the handlebar cross tube. The above lines are bundled together into a cable with cable ties, which will cause friction and stretching on the cables when turning, which will cause wear and tear on the cables in these parts over time, shortening the service life of the lines and causing malfunctions, damage or even short circuit damage to the electric bicycle. Summary of the invention

[0004] The object of the present invention is to provide a composite twisted wire reinforced core cable to solve the problem proposed in the above background technology that most of the existing electric bicycles adopt an exposed, hidden or semi-hidden wiring design in the line layout, which will cause friction and stretching to the cables when turning, and over time will cause wear of the cables in these parts, shortening the service life of the line and causing the electric bicycle to malfunction, damage or even short circuit damage.

[0005] To achieve the above object, the present invention provides the following technical solutions: a composite stranded wire reinforced core cable, comprising a cable and a fixing block, wherein an anti-wear component is mounted on the outer wall of the cable, so that the inner periphery of the anti-wear component fits the cable to reduce the wear on the cable surface, and a fixing component is mounted on the surface of the fixing block, so that the fixing component fixes the cable and fixes the fixing block at a specified position;

[0006] The cable comprises a cable core, a metal shielding layer covering the outer side of the cable core, a protective layer arranged on the outer wall of the metal shielding layer, and a filling layer arranged inside the protective layer and located outside the metal shielding layer.

[0007] Furthermore, the anti-wear component includes a fixed sleeve covering the outside of the cable, a hard block is provided at one end of the fixed sleeve, and a bending plate is provided at the other end of the fixed sleeve close to one side of the hard block, so that the bending plate and the hard block cooperate to form an embedding groove, and an embedding block adapted to the embedding groove is provided on the bending plate close to one side of the hard block.

[0008] Furthermore, the anti-wear component also includes a slider sliding on the side of the fixed sleeve facing away from the cable, a return spring adapted to the slider is arranged inside the fixed sleeve, a contact plate is fixedly connected to the top outer wall of the slider, and a plurality of rubber heads are arranged on the outer wall of the contact plate.

[0009] Furthermore, the fixing component includes a cable tie and a fixing mechanism, one end of the cable tie is installed on the surface of the fixing block and covered on the outside of the anti-wear component, the surface of the cable tie and the side of the fixing block close to the cable tie are provided with an elastic limiting sleeve, and a limiting protrusion is provided on the outer wall of the elastic limiting sleeve. The cable tie fixes the cable and the fixing block through the elastic limiting sleeve and the limiting protrusion and in cooperation with the fixing mechanism.

[0010] Furthermore, a guide slot hole adapted for the cable tie is provided on the outer wall of the fixing block.

[0011] Furthermore, the fixing mechanism includes a slide plate, a connecting spring and a clamping block, the slide plate is slidably connected inside the fixing block, a connecting spring is provided on the outer wall of the slide plate near the connection between the cable tie and the fixing block, and a clamping block adapted to the cable tie is provided on the end of the slide plate facing away from the connecting spring.

[0012] Furthermore, a connecting block is fixedly connected to the surface of the slide plate.

[0013] Furthermore, the fixing mechanism also includes a cavity, which is opened inside the fixing block, and a push rod is slidably arranged on the outer peripheral surface of the cavity, and a fixing spring adapted to the push rod is arranged inside the cavity, the push rod is arranged along the radial and longitudinal directions of the cavity, and a movable head is arranged at one end of the push rod away from the surface of the fixing block.

[0014] Furthermore, a connecting sleeve adapted to the cable tie is provided on one end of the surface of the fixing block close to the connection between the cable tie and the fixing block.

[0015] A method for preparing a composite twisted wire reinforced core cable comprises the following steps:

[0016] S1: manufacturing a cable core, using a wire drawing machine to draw a copper rod to obtain a copper wire, annealing the obtained single copper wire to obtain a conductor, and twisting the obtained conductors together to obtain a cable core;

[0017] S2: Making a metal shielding layer, using a metal mesh braided layer to wrap the surface of the cable core to obtain a metal shielding layer;

[0018] S3: Making a filling layer. The material of the filling layer is graphene material. Graphene has good tensile properties and excellent thermal conductivity, and can absorb the heat generated by the cable core;

[0019] S4: Make a protective layer. The protective layer is made of hydrophobic polyethylene material. Due to the molecular structure of polyethylene material, it has hydrophobic properties and will not penetrate into the interior of the cable when it encounters water.

[0020] The beneficial effect of the present invention is that the present invention pulls one end of the cable tie to shrink the cable tie and squeeze the elastic limiting sleeve. After being squeezed, the elastic limiting sleeve shrinks inward and squeezes the cable. At the same time, the limiting protrusion squeezes the surface of the cable and separates multiple groups of cables, thereby completing the fixation of the cable. After that, the cable tie is wrapped along the surface of the handlebar cross tube of the electric bicycle, and the groove on the surface of the other end of the cable tie is engaged with the clamping block, and the cable tie is limited. At the same time, the movable head on the surface of the push rod squeezes the surface of the handlebar cross tube, and cooperates with the rotation connection of the movable head and the push rod to make the push rod The surface can completely fit the surface of the handlebar cross tube, and the surface of the movable head is made of rubber, which can increase the friction between the movable head and the handlebar cross tube and improve the stability of the fixed block on the surface of the handlebar cross tube. When the electric bicycle generates friction and stretching on the cable during steering, the contact plate can be driven to rotate synchronously through the connection and extrusion of the elastic limit sleeve and the contact plate. At this time, the contact plate slides inside the fixed sleeve through the slider, which buffers the movement of the cable and reduces the tensile tension of the cable. At the same time, the connection between the cable and the fixed sleeve remains stable, reducing the wear on the cable surface and increasing the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the cable structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the elastic limiting sleeve and the limiting protrusion cooperating with each other in the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the slide plate and the connecting spring cooperating with each other in the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the push rod and the fixed spring cooperating with each other in the present invention;

[0026] Figure 6 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0027] In the figure: 1. cable; 101. cable core; 102. metal shielding layer; 103. filling layer; 104. protective layer; 2. anti-wear component; 201. fixing sleeve; 202. slider; 203. reset spring; 204. contact plate; 205. rubber head; 206. hard block; 207. bending plate; 208. embedding groove; 209. embedding block; 3. fixing block; 4. fixing component; 401. cable tie; 402. elastic limiting sleeve; 403. limiting protrusion; 404. guide slot; 405. slide plate; 406. connecting spring; 407. clamping block; 408. connecting block; 409. cavity; 410. push rod; 411. fixing spring; 412. movable head; 413. connecting sleeve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Embodiment 1

[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The present invention provides a technical solution: a composite stranded wire reinforced core cable, comprising a cable 1 and a fixing block 3, an outer wall of the cable 1 is equipped with an anti-wear component 2, so that the inner periphery of the anti-wear component 2 fits with the cable 1 to reduce the wear on the surface of the cable 1, and a fixing component 4 is installed on the surface of the fixing block 3, so that the fixing component 4 fixes the cable 1 and fixes the fixing block 3 at a specified position.

[0032] When in use, the cable 1 is fixed to the surface of the fixing block 3 through the fixing component 4, and the fixing block 3 is fixed to the cross tube of the electric bicycle handlebar. When the electric bicycle is rotated to stretch the cable 1, the anti-wear component 2 can reduce the wear on the surface of the cable 1.

[0033] See also Figure 2As shown in the figure, the cable 1 includes a cable core 101, a metal shielding layer 102 wrapped around the outside of the cable core 101, a protective layer 104 is arranged on the outer wall of the metal shielding layer 102, and a filling layer 103 is arranged inside the protective layer 104 and located on the outside of the metal shielding layer 102.

[0034] When in use, the protective layer 104 is made of hydrophobic polyethylene material. Due to the molecular structure of the polyethylene material, it has hydrophobic properties and will not penetrate into the interior of the cable 1 when exposed to water. The metal shielding layer 102 adopts a double-layer composite shielding structure of soft fine copper wire and soft copper tape, which can homogenize the electric field distribution and prevent the electric field from being concentrated in certain areas of the cable 1, thereby avoiding excessive local electric field intensity and ensuring the normal operation of the cable 1. The material of the filling layer 103 is graphene material. Graphene has good tensile properties and excellent thermal conductivity, and can absorb the heat generated by the cable core 101.

[0035] See also Figure 6 As shown in the figure, the anti-wear component 2 includes a fixed sleeve 201 wrapped around the outside of the cable 1, a hard block 206 is provided at one end of the fixed sleeve 201, and a bending plate 207 is provided at the other end of the fixed sleeve 201 close to the side of the hard block 206, so that the bending plate 207 cooperates with the hard block 206 to form an embedding groove 208, and an embedding block 209 adapted to the embedding groove 208 is provided on the bending plate 207 close to the side of the hard block 206.

[0036] When in use, first wrap the fixing sleeve 201 on the surface of the cable 1, so that the hard blocks 206 and the bending plates 207 at both ends of the fixing sleeve 201 are closed to each other, thereby forming an embedding groove 208 on one side of the cable 1, and then insert the embedding block 209 into the embedding groove 208, so that the embedding block 209 is squeezed and embedded in the groove 208, so that the embedding groove 208 extends and expands to both ends, thereby pulling the fixing sleeve 201 to contract and fix the fixing sleeve 201 on the surface of the cable 1.

[0037] See also Figure 2 As shown in the figure, the anti-wear component 2 also includes a slider 202 sliding on the side of the fixed sleeve 201 facing away from the cable 1, and a return spring 203 adapted to the slider 202 is arranged inside the fixed sleeve 201. A contact plate 204 is fixedly connected to the outer wall of the top end of the slider 202, and a plurality of rubber heads 205 are arranged on the outer wall of the contact plate 204.

[0038] When in use, the friction between the contact plate 204 and the elastic limiting sleeve 402 can be increased through the rubber head 205, thereby improving the stability of the connection between the elastic limiting sleeve 402 and the contact plate 204. When the electric bicycle generates friction and tension on the cable 1 during turning, the contact plate 204 can be driven to rotate synchronously through the connection and extrusion of the elastic limiting sleeve 402 and the contact plate 204. At this time, the contact plate 204 slides inside the fixed sleeve 201 through the slider 202 and squeezes the return spring 203, thereby buffering the movement of the cable 1, reducing the tensile tension of the cable 1, and at the same time keeping the connection between the cable 1 and the fixed sleeve 201 stable, reducing the wear on the surface of the cable 1, and increasing the service life of the cable 1.

[0039] See also Figure 3 As shown in the figure, the fixing component 4 includes a cable tie 401 and a fixing mechanism. One end of the cable tie 401 is installed on the surface of the fixing block 3 and covered on the outside of the anti-wear component 2. An elastic limiting sleeve 402 is provided on the surface of the cable tie 401 and the side of the fixing block 3 close to the cable tie 401. A limiting protrusion 403 is provided on the outer wall of the elastic limiting sleeve 402. The cable tie 401 fixes the cable 1 and the fixing block 3 through the elastic limiting sleeve 402 and the limiting protrusion 403 and cooperates with the fixing mechanism.

[0040] When in use, first place multiple groups of cables 1 into the interior and top groove of the elastic limiting sleeve 402 respectively, then pass one end of the cable tie 401 through the interior of the guide slot 404, and then pull one end of the cable tie 401 to make the cable tie 401 shrink and squeeze the elastic limiting sleeve 402. After being squeezed, the elastic limiting sleeve 402 shrinks inward and squeezes the cable 1, thereby fixing the cable 1 to the surface of the fixing block 3. At the same time, when the elastic limiting sleeve 402 shrinks, the limiting protrusions 403 on the surface will squeeze the surface of the cable 1, thereby pushing the cable 1 to move. After the cable tie 401 fixes the cable 1 to the surface of the fixing block 3, the multiple groups of limiting protrusions 403 will separate the multiple groups of cables 1, and cooperate with the squeezing of the cable tie 401 and the elastic limiting sleeve 402 to complete the fixation of the cable 1.

[0041] See also Figure 3 As shown in the figure, a guide slot hole 404 adapted to the cable tie 401 is provided on the outer wall of the fixing block 3 .

[0042] When in use, the guide slot 404 limits and guides the cable tie 401. Passing one end of the cable tie 401 through the guide slot 404 can limit the cable tie 401 on the surface of the fixing block 3, so that when the cable tie 401 is fixed to the fixing block 3, the cable tie 401 can remain stable on the surface of the fixing block 3, thereby improving the stability of the fixing of the fixing block 3.

[0043] See also Figure 4As shown in the figure, the fixing mechanism includes a slide plate 405, a connecting spring 406 and a clamping block 407. The slide plate 405 is slidably connected inside the fixing block 3. The outer wall of the slide plate 405 is provided with a connecting spring 406 near the connection between the cable tie 401 and the fixing block 3. The end of the slide plate 405 facing away from the connecting spring 406 is provided with a clamping block 407 adapted to the cable tie 401.

[0044] When in use, after the cable tie 401 fixes the cable 1, the other end of the fixing block 3 is attached to the cross tube of the electric bicycle handlebar, and the cable tie 401 is wrapped along the surface of the cross tube of the electric bicycle handlebar. Then, the other end of the cable tie 401 is passed through the surface of the fixing block 3, and one end of the cable tie 401 is pulled so that the groove on the surface of the cable tie 401 squeezes and pushes the clamping block 407. The clamping block 407 is subject to external force and pushes the slide plate 405 to slide inside the fixing block 3 and squeeze the connecting spring 406. When the cable tie 401 completes the fixation of the cable 1 and the fixing block 3, stop pulling the cable tie 401. At this time, the force of the connecting spring 406 pushes the slide plate 405 to reset, thereby clamping the clamping block 407 into the inside of the groove on the surface of the cable tie 401, and limiting the cable tie 401 to ensure the stability of the fixation of the cable 1 and the fixing block 3.

[0045] See also Figure 4 As shown in the figure, a connecting block 408 is fixedly connected to the surface of the slide plate 405 .

[0046] When in use, when the cable 1 needs to be taken out, the connecting block 408 is pushed to drive the slide plate 405 to slide, so that the clamping block 407 slides out of the groove on the surface of the cable tie 401, and the limit on the cable tie 401 is released, so that the cable 1 can be taken out.

[0047] See also Figure 5 As shown in the figure, the fixing mechanism also includes a cavity 409, which is opened inside the fixed block 3. A push rod 410 is slidably arranged on the outer peripheral surface of the cavity 409. A fixing spring 411 adapted to the push rod 410 is arranged inside the cavity 409. The push rod 410 is arranged along the radial and longitudinal directions of the cavity 409, and a movable head 412 is arranged at one end of the push rod 410 away from the surface of the fixed block 3.

[0048] When in use, when one end of the cable tie 401 is pulled to fix the cable 1 and the fixed block 3, the movable head 412 on the surface of the push rod 410 squeezes the surface of the handlebar cross tube. After being squeezed, the movable head 412 on the surface of the handlebar cross tube will push the push rod 410 to slide into the inside of the cavity 409 and squeeze the air inside the cavity 409. After being squeezed, the air will push the push rod 410 that is not in contact with the surface of the handlebar cross tube to move outward, thereby contacting the surface of the handlebar cross tube, and cooperating with the rotational connection between the movable head 412 and the push rod 410, so that the surface of the push rod 410 can completely fit the surface of the handlebar cross tube, and the surface of the movable head 412 is made of rubber, which can increase the friction between the movable head 412 and the handlebar cross tube, and improve the stability of the fixed block 3 on the surface of the handlebar cross tube.

[0049] See also Figure 4 As shown in the figure, a connecting sleeve 413 adapted to the cable tie 401 is provided at one end of the surface of the fixing block 3 close to the connection between the cable tie 401 and the fixing block 3 .

[0050] When in use, after the block 407 is inserted into the groove on the surface of the cable tie 401, one end of the cable tie 401 is passed through the interior of the connecting sleeve 413, so that the surface of the cable tie 401 and the surface of the fixing block 3 fit each other, and the balance and stability of the cable tie 401 and the fixing block 3 are maintained to prevent the cable tie 401 from loosening.

[0051] The present invention also provides an embodiment of a method for preparing a composite stranded wire reinforced core cable:

[0052] S1: manufacturing the cable core 101, using a wire drawing machine to draw a copper rod to obtain a copper wire, annealing the obtained single copper wire to obtain a conductor, and twisting the obtained conductors together to obtain the cable core 101;

[0053] S2: Making a metal shielding layer 102, using a metal mesh braided layer to wrap the surface of the cable core 101 to obtain the metal shielding layer 102;

[0054] S3: making a filling layer 103, wherein the material of the filling layer 103 is a graphene material, which has good tensile properties and excellent thermal conductivity, and can absorb the heat generated by the cable core 101;

[0055] S4: manufacturing the protective layer 104. The protective layer 104 is made of hydrophobic polyethylene material. Due to the molecular structure of the polyethylene material, it has hydrophobic properties and will not penetrate into the interior of the cable 1 when it encounters water.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite stranded wire reinforced core cable, comprising a cable (1) and a fixing block (3), characterized in that: An anti-wear component (2) is mounted on the outer wall of the cable (1), so that the inner periphery of the anti-wear component (2) fits the cable (1) to reduce the wear on the surface of the cable (1); a fixing component (4) is mounted on the surface of the fixing block (3), so that the fixing component (4) fixes the cable (1) and fixes the fixing block (3) at a specified position; The cable (1) comprises a cable core (101), a metal shielding layer (102) covering the outside of the cable core (101), a protective layer (104) being arranged on the outer wall of the metal shielding layer (102), and a filling layer (103) being arranged inside the protective layer (104) and located outside the metal shielding layer (102).

2. A composite stranded wire reinforced core cable according to claim 1, characterized in that: The anti-wear component (2) comprises a fixing sleeve (201) covering the outside of the cable (1); a hard block (206) is arranged at one end of the fixing sleeve (201); a bending plate (207) is arranged at the other end of the fixing sleeve (201) close to one side of the hard block (206), so that the bending plate (207) cooperates with the hard block (206) to form an embedding groove (208); and an embedding block (209) adapted to the embedding groove (208) is arranged at one side of the bending plate (207) close to the hard block (206).

3. A composite stranded wire reinforced core cable according to claim 2, characterized in that: The anti-wear component (2) further comprises a slider (202) sliding on the side of the fixed sleeve (201) facing away from the cable (1); a return spring (203) adapted for the slider (202) is arranged inside the fixed sleeve (201); a contact plate (204) is fixedly connected to the outer wall of the top end of the slider (202); and a plurality of rubber heads (205) are arranged on the outer wall of the contact plate (204).

4. A composite twisted wire reinforced core cable according to claim 1, characterized in that: The fixing assembly (4) comprises a cable tie (401) and a fixing mechanism, one end of the cable tie (401) is mounted on the surface of the fixing block (3) and is wrapped around the outside of the anti-wear assembly (2), an elastic limiting sleeve (402) is provided on the surface of the cable tie (401) and on the side of the fixing block (3) close to the cable tie (401), a limiting protrusion (403) is provided on the outer wall of the elastic limiting sleeve (402), and the cable tie (401) is fixed to the cable (1) and the fixing block (3) by means of the elastic limiting sleeve (402) and the limiting protrusion (403) in cooperation with the fixing mechanism.

5. A composite twisted wire reinforced core cable according to claim 4, characterized in that: The outer wall of the fixing block (3) is provided with a guide slot hole (404) adapted for the cable tie (401).

6. A composite stranded wire reinforced core cable according to claim 4, characterized in that: The fixing mechanism comprises a slide plate (405), a connecting spring (406) and a clamping block (407); the slide plate (405) is slidably connected inside the fixing block (3); a connecting spring (406) is provided on the outer wall of the slide plate (405) near the connection between the cable tie (401) and the fixing block (3); and a clamping block (407) adapted to the cable tie (401) is provided at one end of the slide plate (405) facing away from the connecting spring (406).

7. A composite stranded wire reinforced core cable according to claim 6, characterized in that: A connecting block (408) is fixedly connected to the surface of the slide plate (405).

8. A composite twisted wire reinforced core cable according to claim 4, characterized in that: The fixing mechanism also includes a cavity (409), the cavity (409) is opened inside the fixing block (3), a push rod (410) is slidably arranged on the outer peripheral surface of the cavity (409), a fixing spring (411) adapted to the push rod (410) is arranged inside the cavity (409), the push rod (410) is arranged along the radial and longitudinal directions of the cavity (409), and a movable head (412) is arranged at one end of the push rod (410) away from the surface of the fixing block (3).

9. A composite stranded wire reinforced core cable according to claim 4, characterized in that: A connection sleeve (413) adapted to the cable tie (401) is provided on one end of the surface of the fixing block (3) close to the connection between the cable tie (401) and the fixing block (3).

10. The method for preparing a composite stranded wire reinforced core cable according to claim 1, characterized in that: The following steps are involved: S1: manufacturing a cable core (101), using a wire drawing machine to draw a copper rod to obtain a copper wire, annealing the obtained single copper wire to obtain a conductor, and twisting the obtained conductors together to obtain a cable core (101); S2: manufacturing a metal shielding layer (102), using a metal mesh braided layer to wrap the surface of the cable core (101) to obtain the metal shielding layer (102); S3: manufacturing a filling layer (103), wherein the material of the filling layer (103) is a graphene material. Graphene has good tensile properties and excellent thermal conductivity, and can absorb the heat generated by the cable core (101); S4: Making a protective layer (104). The protective layer (104) is made of a hydrophobic polyethylene material. Due to the molecular structure of the polyethylene material, it has a hydrophobic property and will not penetrate into the interior of the cable (1) when it encounters water.

Images