Insulating polyurethane elastomer sheath control cable

Abstract

The utility model discloses an insulating polyurethane elastomer sheath control cable, and relates to the technical field of cables. The cable comprises an outer sheath, a total shielding layer is arranged in the outer sheath, a plurality of cable inner cores are arranged in the total shielding layer, each cable inner core comprises two conductors, an inner sheath and a sub-shielding layer, the two conductors are wrapped with the inner sheath, the inner sheath and the outer sheath are polyurethane sheaths, and the sub-shielding layer is arranged between the inner sheath and the outer sheath. The two inner sheaths are twisted in pairs to form a wire core, and a sub-shielding layer is arranged outside the wire core; the two sides of the exterior of the outer sheath are fixedly provided with cylindrical strips and C-shaped clamping sleeves through connecting bands, the upper ends and the lower ends of the exteriors of the cylindrical strips are fixedly provided with metal strips for magnetic strips to be attracted, and the magnetic strips are installed in reserved cavities formed in the C-shaped clamping sleeves.

Description

Technical Field

[0001] This utility model belongs to the field of cables, and more specifically, relates to an insulated polyurethane elastomer sheathed control cable. Background Technology

[0002] In low-voltage cable products, control cables for computer rooms have high requirements for cable quality. They require many signal transmission lines to be connected together and must not interfere with each other. Due to the limitations of computer rooms, the cable size cannot be too large. In order to reduce the size of the cable, the metal armor layer is often removed, which reduces its ability to resist electromagnetic interference. Furthermore, when wiring in a computer room, it is necessary to prevent multiple control cables from getting tangled. In view of this, this utility model is proposed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an insulated polyurethane elastomer sheathed control cable.

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0005] An insulated polyurethane elastomer sheathed control cable includes an outer sheath, an inner shielding layer inside the outer sheath, and multiple cable cores inside the inner shielding layer. Each cable core includes two conductors, an inner sheath, and a sub-shielding layer. The two conductors are wrapped with an inner sheath. Both the inner and outer sheaths are polyurethane sheaths. The two inner sheaths are twisted into a wire core, and the wire core is provided with a sub-shielding layer.

[0006] Both sides of the outer sheath are fixed with cylindrical strips and C-shaped snap sleeves by connecting straps. Metal strips for magnetic strips to be attracted are fixed at the upper and lower ends of the cylindrical strips. The magnetic strips are installed in the reserved cavity opened inside the C-shaped snap sleeve.

[0007] Optionally, the outer sheath is integrally formed with pre-grinding strips, and wear-resistant ceramic blocks are fixed at equal intervals on the top of the protruding end of each pre-grinding strip.

[0008] Optionally, a tensile reinforcing core is provided at the circular center of the total shielding layer, and the three cable cores are distributed at equal intervals with the tensile reinforcing core as the center point.

[0009] Optionally, the three cable cores are further abutted by irregularly shaped insulating elastic strips, and the three cable cores and the exterior of the multiple elastic strips are fixed by wrapping with the same first self-adhesive flame-retardant wrapping tape.

[0010] Optionally, the remaining multiple cable cores are arranged in a ring array between the first self-adhesive flame-retardant wrapping tape and the total shielding layer, and a second self-adhesive flame-retardant wrapping tape is provided between the total shielding layer and the outer sheath.

[0011] Optionally, the outer surfaces of the outer sheath and the pre-grinding strip are coated with a capsaicin coating to prevent rodents from gnawing on them.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0013] 1. The multiple cable cores inside this utility model have their own sub-shielding layers as the first layer of electromagnetic interference protection, and the multiple cable cores can also be shielded by the total shielding layer as the second layer of electromagnetic interference protection. Therefore, the electromagnetic interference from the outside world is greatly reduced. The sub-shielding layers can also be used to prevent mutual interference between multiple cables. During the later production, the braiding density of the total shielding layer is not less than 85%. Similarly, in order to ensure the anti-interference ability, the braiding density of the sub-shielding layer is greater than or equal to 80%.

[0014] 2. The multiple cables of this utility model can be connected and arranged by strip posts and C-type clamp sleeves, thereby preventing the multiple cables from getting tangled during the laying process. Tangling will make it difficult for workers to maintain them later.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the component structure of this utility model, in which multiple cables are connected by a combination of a cylindrical strip and a C-type snap-fit ​​sleeve;

[0019] Figure 3 This is a schematic diagram of the combined component structure of the three cable inner cores, tensile reinforcing core, and irregularly shaped elastic block in this utility model.

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of part A in the diagram;

[0021] Figure 5 for Figure 1 Schematic diagram of part B in the diagram;

[0022] Figure 6 for Figure 2 A schematic diagram of the structure of part C in the diagram.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Outer sheath; 2. Overall shielding layer; 3. Conductor; 4. Inner sheath; 5. Sub-shielding layer; 6. Connecting strip; 7. Columnar strip; 8. C-type snap sleeve; 9. Magnetic strip; 10. Metal strip; 11. Pre-grinding strip; 12. Wear-resistant ceramic block; 13. Tensile reinforcing core; 14. Irregularly shaped insulating elastic strip; 15. First self-adhesive flame-retardant wrapping tape; 16. Second self-adhesive flame-retardant wrapping tape; 17. Capsaicin coating.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] Please see Figures 1 to 6 This utility model provides a technical solution: an insulated polyurethane elastomer sheathed control cable, including an outer sheath 1, an inner shielding layer 2 inside the outer sheath 1, and multiple cable cores inside the inner shielding layer 2. Each cable core includes two conductors 3, an inner sheath 4, and a sub-shielding layer 5. The two conductors 3 are wrapped with the inner sheath 4. Both the inner sheath 4 and the outer sheath 1 are polyurethane sheaths. The two inner sheaths 4 are twisted into a wire core, and the wire core is provided with a sub-shielding layer 5.

[0028] Both sides of the outer sheath 1 are fixed with cylindrical strips 7 and C-type snap-fit ​​sleeves 8 via connecting straps 6. Metal strips 10 for magnetic strips 9 to be attracted are fixed at both the upper and lower ends of the cylindrical strips 7. The magnetic strips 9 are installed in a reserved cavity inside the C-type snap-fit ​​sleeve 8. Considering that in low-voltage cable products, computer room control cables have high requirements for cable quality, requiring multiple signal transmission lines to be connected together and not interfere with each other, and due to the limitations of the computer room, the cable size cannot be too large. To reduce the cable size, the metallic armor layer is often removed, which reduces its electromagnetic interference resistance. Therefore, this cable has multiple inner cores with various... The sub-shielding layer 5 serves as the first electromagnetic interference barrier, while the inner cores of multiple cables can also be shielded by the total shielding layer 2 as the second electromagnetic interference barrier. This greatly reduces external electromagnetic interference. The sub-shielding layers 5 can also be used to prevent mutual interference between multiple cables. During later production, the braiding density of the total shielding layer 2 is not less than 85%. Similarly, in order to ensure anti-interference capability, the braiding density of the sub-shielding layer 5 is greater than or equal to 80%. Secondly, multiple cables can be arranged and combined by connecting the strip posts and C-type clamp sleeves 8, thereby preventing the multiple cables from getting tangled during laying. Tangling will be detrimental to later maintenance by workers.

[0029] The outer sheath 1 is integrally formed with pre-grinding strips 11. Wear-resistant ceramic blocks 12 are fixed at equal intervals on the top of the protruding end of each pre-grinding strip 11. By setting the pre-grinding strips 11, the outer sheath 1 can be protected against wear by the pre-grinding strips 11 and the wear-resistant ceramic blocks 12 during the cable laying process. When the wear-resistant ceramic blocks 12 come into contact with the ground, the dragging process will utilize the contact between the wear-resistant ceramic blocks 12 and the ground to reduce the wear of the outer sheath 1.

[0030] Among them, the center of the circular shielding layer 2 is provided with a tensile reinforcing core 13, and the three cable cores are distributed at equal intervals with the tensile reinforcing core 13 as the center point. The tensile reinforcement improves the overall tensile performance of the cable.

[0031] Among them, there are irregularly shaped insulating elastic strips 14 between the three inner cores of the cable. The three inner cores of the cable and the outside of the multiple elastic strips are fixed by wrapping with the same first self-adhesive flame-retardant wrapping tape 15. By setting the irregularly shaped insulating elastic strips 14, the cable inner cores are protected, so that when the cable is dropped or hit, the cable inner cores will be protected by the internal irregularly shaped insulating elastic strips 14.

[0032] The remaining multiple cable cores are arranged in a ring array between the first self-adhesive flame-retardant wrapping tape 15 and the total shielding layer 2. A second self-adhesive flame-retardant wrapping tape 16 is provided between the total shielding layer 2 and the outer sheath 1. By setting the first self-adhesive flame-retardant wrapping tape 15, not only are the three cable cores, the irregular insulating elastic strip 14 and the tensile reinforcing core 13 fixed, but the three cable cores are also protected against flame retardancy. At the same time, the second self-adhesive flame-retardant wrapping tape 16 improves the overall flame retardancy of the cable.

[0033] The outer surfaces of the outer sheath 1 and the pre-grinding strip 11 are coated with capsaicin coating 17 to prevent rodents from gnawing on the cable. The capsaicin coating 17 prevents rodents from gnawing on the cable and causing the outer sheath 1 to break.

[0034] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A polyurethane elastomer-sheathed control cable, comprising an outer sheath (1), characterized in that, The outer sheath (1) has a total shielding layer (2) inside, and multiple cable cores are provided inside the total shielding layer (2). Each cable core includes two conductors (3), an inner sheath (4) and a sub-shielding layer (5). The two conductors (3) are wrapped with an inner sheath (4). Both the inner sheath (4) and the outer sheath (1) are polyurethane sheaths. The two inner sheaths (4) are twisted into a wire core, and the wire core is provided with a sub-shielding layer (5) on the outside. The outer sheath (1) has a cylindrical strip (7) and a C-shaped snap sleeve (8) fixed on both sides of the outer side by a connecting strip (6). Metal strips (10) for magnetic strips (9) to be attracted are fixed at the upper and lower ends of the cylindrical strip (7). The magnetic strips (9) are installed in the reserved cavity opened inside the C-shaped snap sleeve (8).

2. The control cable with polyurethane elastomer sheath according to claim 1, characterized in that, The outer sheath (1) is integrally formed with pre-grinding strips (11), and wear-resistant ceramic blocks (12) are fixed at equal intervals on the top of the protruding end of each pre-grinding strip (11).

3. The control cable with polyurethane elastomer sheath according to claim 1, characterized in that, The total shielding layer (2) has a tensile reinforcing core (13) at its circular center, and the three cable cores are distributed at equal intervals with the tensile reinforcing core (13) as the center point.

4. The control cable with polyurethane elastomer sheath according to claim 3, characterized in that, The three cable cores are also in contact with irregularly shaped insulating elastic strips (14), and the three cable cores and the exterior of the multiple elastic strips are fixed by wrapping them with the same first self-adhesive flame-retardant wrapping tape (15).

5. A control cable with polyurethane elastomer sheath according to claim 4, characterized in that, The remaining multiple cable cores are arranged in a ring array between the first self-adhesive flame-retardant wrapping tape (15) and the total shielding layer (2), and a second self-adhesive flame-retardant wrapping tape (16) is provided between the total shielding layer (2) and the outer sheath (1).

6. The control cable with polyurethane elastomer sheath according to claim 1, characterized in that, The outer surfaces of the outer sheath (1) and the pre-grinding strip (11) are coated with a capsaicin coating (17) to prevent rodents from gnawing on them.

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