High-temperature-resistant and high-flexibility motor outgoing cable

Abstract

The utility model relates to a high-temperature-resistant and high-flexibility motor outgoing cable, which comprises an outer protective layer, the outer protective layer is of a hollow pipeline structure, and the two ends of the outer protective layer are provided with openings; the wrapping layer is of a hollow pipeline structure, the two ends of the wrapping layer are open, the wrapping layer is arranged on the inner side of the outer protection layer, the wrapping layer sequentially comprises a first flexible wrapping tape, a second flexible wrapping tape and a third flexible wrapping tape in the direction from the position close to the outer protection layer to the position away from the outer protection layer, and the first flexible wrapping tape and the second flexible wrapping tape are arranged at intervals; the second flexible wrapping tape and the third flexible wrapping tape are tightly attached to each other; the shielding layer is clamped between the second flexible wrapping tape and the first flexible wrapping tape; the core wire layer comprises a plurality of insulated core wires, the plurality of insulated core wires are arranged on the inner side of the coating layer, the plurality of insulated core wires are arranged in the circumferential direction of the coating layer, and every two adjacent insulated core wires abut against each other; and the inner side of the core wire layer is filled with the filling piece. According to the invention, the outgoing cable of the motor has high temperature resistance and high flexibility at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a motor lead-out cable with high temperature resistance and high flexibility. Background Technique

[0002] There are various types of motor lead-out cables, and there are many differences in performance requirements and structures. Among them, the demand for motor lead-out cables that meet the requirements of high temperature resistance and high flexibility has been relatively large in the market in recent years. However, the commonly seen motor lead-out cables in the market rarely can take into account both high temperature resistance and high flexibility at the same time. Content of the Utility Model

[0003] In order to enable the motor lead-out cable to take into account both high temperature resistance and high flexibility at the same time, this application provides a motor lead-out cable with high temperature resistance and high flexibility.

[0004] A motor lead-out cable with high temperature resistance and high flexibility provided by this application adopts the following technical solutions:

[0005] A motor lead-out cable with high temperature resistance and high flexibility, comprising:

[0006] An outer protective layer, which is a hollow pipeline structure and is provided with openings at both ends;

[0007] A coating layer, which is a hollow pipeline structure and is provided with openings at both ends. The coating layer is arranged inside the outer protective layer. The coating layer sequentially includes a first flexible tape, a second flexible tape, and a third flexible tape from the direction close to the outer protective layer to the direction far from the outer protective layer. The first flexible tape and the second flexible tape are arranged at intervals, the second flexible tape and the third flexible tape are closely arranged, and the first flexible tape is made of polyimide material;

[0008] A shielding layer, which is clamped between the second flexible tape and the first flexible tape;

[0009] A core wire layer, which includes a plurality of insulated core wires. The plurality of insulated core wires are arranged inside the coating layer. Each insulated core wire abuts against the inner side of the third flexible tape. The plurality of insulated core wires are arranged along the circumference of the coating layer and two adjacent insulated core wires abut against each other;

[0010] A filling member, which is filled inside the core wire layer.

[0011] By adopting the above technical solutions, the core wire layer is coated by multiple layers of flexible tapes, and the first flexible tape made of polyimide material is both high temperature resistant and highly flexible, enabling the motor lead-out cable to take into account both high temperature resistance and high flexibility at the same time.

[0012] Preferably, the outer protective layer is made of polyurethane material.

[0013] By adopting the above technical solution, the polyurethane material part has high strength, high wear resistance and high temperature resistance, and the outer protective layer made of the polyurethane material part further improves the high temperature resistance of the cable.

[0014] Preferably, both the second flexible tape and the third flexible tape are made of polytetrafluoroethylene material parts.

[0015] By adopting the above technical solution, the polytetrafluoroethylene material part has high corrosion resistance, high flexibility and high temperature resistance. Therefore, both the second flexible tape and the third flexible tape made of polytetrafluoroethylene material parts further enable the motor lead-out cable to take into account both high temperature resistance and high flexibility.

[0016] Preferably, the shielding layer is made of a tinned copper wire braid.

[0017] By adopting the above technical solution, the tinned copper wire braid used for the shielding layer has high bending strength. The shielding layer sandwiched between the second flexible tape and the first flexible tape not only has a good insulation effect, but also keeps the cable in good stability and anti-loosening property, thereby improving the torsional resistance of the cable.

[0018] Preferably, the braiding density of the shielding layer > 85%.

[0019] By adopting the above technical solution, the cable has good shielding performance and structural stability performance.

[0020] Preferably, the insulated core wire includes a core conductor and an insulating layer coated outside the core conductor. The core conductor is made of a tinned copper stranded conductor part, and the insulating layer is made of a Teflon material part.

[0021] By adopting the above technical solution, the tinned copper stranded conductor part enables the core conductor to have good conductive transmission performance, and the Teflon material part enables the insulated core wire to have good insulation performance with the structure outside the core wire.

[0022] Preferably, six insulated core wires are provided, and the outer diameters of two relatively arranged insulated core wires are smaller than those of the other four insulated core wires;

[0023] The filling member includes a central filling wire, intermediate filling wires and edge filling wires;

[0024] The central filling wire is located on the central axis of the outer protective layer, and the central filling wire abuts against the four insulated core wires with larger outer diameters at the same time;

[0025] The intermediate filling wires are located on both sides in the radial direction of the central filling wire, and the intermediate filling wires abut against the adjacent central filling wire, one insulated core wire with a smaller outer diameter, and two insulated core wires with larger outer diameters at the same time;

[0026] The edge filling lines are located on both sides of the center filling line in the radial direction. The connection line between the centers of the end faces of the two intermediate filling lines is perpendicular to the connection line between the centers of the end faces of the two edge filling lines. The edge filling lines are simultaneously in contact with the inner sides of the two adjacent insulating core wires with larger outer diameters and the third flexible tape.

[0027] By adopting the above technical solution, the filler effectively fills the void structure inside the core wire layer, preventing the cable from deforming during long-term continuous pulling, bending, twisting and other complex movements, and improving the structural durability of the cable.

[0028] Preferably, the filler is made of an aramid fiber material piece.

[0029] By adopting the above technical solution, the aramid fiber material piece has strong insulation, high temperature resistance and anti-aging properties, ensuring the durability of the filler.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. The core wire layer is coated by multiple flexible tapes. The first flexible tape made of a polyimide material piece is both high temperature resistant and highly flexible. The second flexible tape and the third flexible tape made of polytetrafluoroethylene material pieces have high corrosion resistance, high flexibility and high temperature resistance, enabling the motor lead-out cable to take into account both high temperature resistance and high flexibility;

[0032] 2. The filler effectively fills the void structure inside the core wire layer, preventing the cable from deforming during long-term continuous pulling, bending, twisting and other complex movements, and improving the structural durability of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of a high temperature resistant and highly flexible motor lead-out cable in an embodiment of the present application.

[0034] Description of the reference numerals: 1, outer sheath; 2, coating layer; 21, first flexible tape; 22, second flexible tape; 23, third flexible tape; 3, shielding layer; 4, core wire layer; 41, insulating core wire; 411, core wire conductor; 412, insulating layer; 42, filler; 421, center filling line; 422, intermediate filling line; 423, edge filling line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following will Figure 1 be further described in detail with reference to the attached

[0036] An embodiment of the present application discloses a high temperature resistant and highly flexible motor lead-out cable.

[0037] Refer to Figure 1, a motor lead-out cable that is heat-resistant and highly flexible includes an outer protective layer 1. The outer protective layer 1 is a hollow pipeline structure with both ends open. The outer protective layer 1 is made of a polyurethane material part. The polyurethane material part has high strength, high wear resistance, and heat resistance. The outer protective layer 1 made of the polyurethane material part improves the heat resistance and wear resistance of the cable surface.

[0038] An inner layer 2 is provided inside the outer protective layer 1. The inner layer 2 is a hollow pipeline structure with both ends open. The inner layer 2 includes a first flexible tape 21, a second flexible tape 22, and a third flexible tape 23 in sequence from the direction close to the outer protective layer 1 to the direction far from the outer protective layer 1. The first flexible tape 21 and the second flexible tape 22 are arranged at intervals, and the second flexible tape 22 and the third flexible tape 23 are closely arranged. The first flexible tape 21 is made of a polyimide material part, and the second flexible tape 22 and the third flexible tape 23 are both made of a polytetrafluoroethylene material part.

[0039] The core wire layer 4 is covered by multiple layers of flexible tapes. The first flexible tape 21 made of a polyimide material part is both heat-resistant and highly flexible. The second flexible tape 22 and the third flexible tape 23 made of a polytetrafluoroethylene material part have high corrosion resistance, high flexibility, and heat resistance, enabling the motor lead-out cable to take into account both heat resistance and high flexibility.

[0040] A shielding layer 3 is sandwiched between the second flexible tape 22 and the first flexible tape 21. The shielding layer 3 is made of a tinned copper wire braided part and has high bending strength. The shielding layer 3 sandwiched between the second flexible tape 22 and the first flexible tape 21 not only plays a good insulation effect but also keeps the cable in good stability and anti-loosening property, thus improving the torsional resistance of the cable. The braiding density of the shielding layer 3 > 85%, enabling the cable to have good shielding performance and structural stability performance.

[0041] A core wire layer 4 is provided inside the inner layer 2. The core wire layer 4 includes multiple insulated core wires 41. The multiple insulated core wires 41 are arranged inside the inner layer 2. Each insulated core wire 41 abuts against the inner side of the third flexible tape 23. The multiple insulated core wires 41 are arranged circumferentially along the inner layer 2 and two adjacent insulated core wires 41 abut against each other. Six insulated core wires 41 are provided, and the outer diameters of two relatively arranged insulated core wires 41 are smaller than those of the other four insulated core wires 41.

[0042] The insulated core wire 41 includes a core wire conductor 411 and an insulating layer 412 covering the core wire conductor 411. The core wire conductor 411 is made of a tinned copper stranded conductor part, enabling the core wire conductor 411 to have good conductive transmission performance. The insulating layer 412 is made of a Teflon material part, enabling the insulated core wire 41 to have good insulation performance between the core wire and the structure outside the core wire.

[0043] Inside the core wire layer 4, there is a filler 42 filled. The filler 42 is made of aramid fiber material parts, and the aramid fiber material parts have strong insulation, high temperature resistance and anti-aging properties, ensuring the durability of the filler 42.

[0044] The filler 42 includes a central filler wire 421, intermediate filler wires 422 and edge filler wires 423.

[0045] The central filler wire 421 is located on the central axis of the outer sheath 1, and the central filler wire 421 is simultaneously in contact with four insulating core wires 41 with larger outer diameters.

[0046] The intermediate filler wires 422 are located on both sides of the central filler wire 421 in the radial direction. The intermediate filler wires 422 are simultaneously in contact with the adjacent central filler wire 421, one insulating core wire 41 with a smaller outer diameter, and two insulating core wires 41 with larger outer diameters.

[0047] The edge filler wires 423 are located on both sides of the central filler wire 421 in the radial direction. The connection line of the centers of the end faces of the two intermediate filler wires 422 is perpendicular to the connection line of the centers of the end faces of the two edge filler wires 423. The edge filler wires 423 are simultaneously in contact with two adjacent insulating core wires 41 with larger outer diameters and the inner side of the third flexible tape 23.

[0048] The filler 42 effectively fills the void structure inside the core wire layer 4, preventing the cable from deforming during long-term continuous pulling, bending, twisting and other complex movements, and improving the structural durability of the cable.

[0049] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A high temperature resistant and highly flexible motor lead cable, characterized in that: include: An outer protective layer (1), wherein the outer protective layer (1) is a hollow pipeline structure and is open at both ends; A covering layer (2), wherein the covering layer (2) is a hollow pipeline structure and is open at both ends. The covering layer (2) is arranged on the inner side of the outer protective layer (1). The covering layer (2) includes a first flexible wrapping tape (21), a second flexible wrapping tape (22), and a third flexible wrapping tape (23) in sequence from the direction close to the outer protective layer (1) to the direction away from the outer protective layer (1). The first flexible wrapping tape (21) and the second flexible wrapping tape (22) are arranged at intervals. The second flexible wrapping tape (22) and the third flexible wrapping tape (23) are arranged in close contact. The first flexible wrapping tape (21) is made of a polyimide material. a shielding layer (3), the shielding layer (3) being sandwiched between the second flexible wrapping tape (22) and the first flexible wrapping tape (21); A core wire layer (4), the core wire layer (4) comprising a plurality of insulating core wires (41), the plurality of insulating core wires (41) being arranged on the inner side of the covering layer (2), each of the insulating core wires (41) being in contact with the inner side of the third flexible wrapping tape (23), the plurality of insulating core wires (41) being arranged along the circumference of the covering layer (2), and two adjacent insulating core wires (41) being in contact with each other; A filling piece (42), wherein the filling piece (42) is filled inside the core wire layer (4).

2. The high-temperature resistant and highly flexible motor lead cable according to claim 1, characterized in that: The outer protective layer (1) is made of polyurethane material.

3. The high-temperature resistant and highly flexible motor lead-out cable according to claim 1, characterized in that: The second flexible wrapping belt (22) and the third flexible wrapping belt (23) are both made of polytetrafluoroethylene material.

4. The high-temperature resistant and highly flexible motor lead-out cable according to claim 1, characterized in that: The shielding layer (3) is made of a tinned copper wire braid.

5. The high-temperature resistant and highly flexible motor lead cable according to claim 4, characterized in that: The braiding density of the shielding layer (3) is greater than 85%.

6. The high-temperature resistant and highly flexible motor lead-out cable according to claim 1, characterized in that: The insulated core wire (41) comprises a core wire conductor (411) and an insulating layer (412) covering the core wire conductor (411); the core wire conductor (411) is made of a tinned copper stranded conductor, and the insulating layer (412) is made of a Teflon material.

7. The high-temperature resistant and highly flexible motor lead-out cable according to claim 1, characterized in that: Six insulating core wires (41) are provided, wherein the outer diameters of two insulating core wires (41) arranged opposite to each other are smaller than the outer diameters of the other four insulating core wires (41); The filling piece (42) includes a central filling line (421), a middle filling line (422) and an edge filling line (423); The central filling line (421) is located on the central axis of the outer sheath (1), and the central filling line (421) is simultaneously in contact with four insulating core wires (41) having larger outer diameters; The intermediate filling line (422) is located on both sides of the central filling line (421) in a radial direction, and the intermediate filling line (422) is simultaneously in contact with the adjacent central filling line (421), an insulating core wire (41) with a smaller outer diameter, and two insulating core wires (41) with a larger outer diameter; The edge filling lines (423) are located on both sides of the center filling line (421) in the radial direction, the line connecting the centers of the end faces of the two middle filling lines (422) is perpendicular to the line connecting the centers of the end faces of the two edge filling lines (423), and the edge filling lines (423) are simultaneously in contact with the two adjacent insulating core wires (41) with larger outer diameters and the inner side of the third flexible wrapping tape (23).

8. The high-temperature resistant and highly flexible motor lead-out cable according to claim 1, characterized in that: The filling piece (42) is made of aramid fiber material.

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