Flame-retardant control cables with compression protection structure for intelligent electrical equipment

Abstract

The utility model discloses a flame-retardant control cable with a pressure-resistant protection structure for intelligent electrical equipment, which relates to the field of cable harnesses and aims to solve the problem that cables with weak pressure resistance are easily damaged and the fire easily spreads to the entire cable when one part burns. The key points of the technical solution are that the pressure-resistant protection layer includes an inner layer and an outer layer, and the inner layer and the outer layer of the pressure-resistant protection layer are respectively penetrated with a plurality of deformation airbags, the pressure-resistant protection layer includes the inner layer and the outer layer of the deformation airbags which are staggered with each other, and the outer edge of the pressure-resistant protection layer is wrapped with an insulating layer, so as to avoid direct local pressure being transmitted to the cable core body to cause damage to the cable core body, thereby producing an effect of wrapping the cable core body in an all-round and large-area manner and concentrating the local pressure to damage the cable core body.

Description

Technical Field

[0001] The utility model relates to the technical field of cable harnesses, in particular to a flame-retardant control cable with a compression protection structure for intelligent electrical equipment. Background Art

[0002] Wires and cables are wire products used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. Wires and cables in a broad sense are also referred to as cables. Cables in a narrow sense refer to insulated cables, which can be defined as: a collection of the following parts; one or more insulated cores, and their respective coatings, total protective layers and outer sheaths. Cables may also have additional uninsulated conductors. When installing cables for intelligent electrical equipment, sometimes some heavy objects are pressed on the cables to make the cables bear the weight.

[0003] At present, cables on the market generally have weak compressive resistance. Under external pressure, the outer sheath of the cable is squeezed, and then the internal cable core wire is squeezed, which will directly cause the core wire to break due to excessive squeezing, resulting in cable damage. At the same time, when one part of the cable burns, it is easy to spread to the entire cable, causing great economic losses. Therefore, there is an urgent need for a pressure-resistant flame-retardant cable with strong pressure resistance and flame resistance that is not easy to spread. Utility Model Content

[0004] The utility model aims to provide a flame retardant control cable with a compression protection structure for intelligent electrical equipment.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] It comprises a cable body, wherein a flame-retardant cable core is arranged inside the cable body, wherein the flame-retardant cable core comprises a cable core body twisted in bundles, wherein the cable core body is wrapped with a flame-retardant layer, wherein the flame-retardant cable core is wrapped with a pressure-resistant protective layer, wherein the pressure-resistant protective layer comprises an inner layer and an outer layer, wherein a plurality of deformation airbags are respectively penetrated through the inner layer and the outer layer of the pressure-resistant protective layer, wherein the deformation airbags of the inner layer and the outer layer are staggered with each other, and an insulating layer is wrapped around the outer edge of the pressure-resistant protective layer.

[0007] By adopting the above technical scheme, the flame retardant layer wrapping the cable core body has a good flame retardant effect, and the flame is not easy to spread. The deformation airbag formed by the elastic material has a good buffering effect. When external force is pressed, the insulation layer of the cable body is partially compressed and deformed. When the pressure is transmitted to the pressure-resistant protective layer, the internal gas of the deformation airbag is compressed during adaptive deformation to produce an outward expansion force, which has a good buffering effect and avoids direct local pressure transmission to the cable core body, causing damage to the cable core body. The staggered setting of the deformation airbag with nested inner and outer layers of the pressure-resistant protective layer can allow the deformation airbag to wrap the cable core body in an all-round and large area, avoiding the existence of dead corners that cause local pressure concentration and damage to the cable core body.

[0008] Furthermore, the flame retardant layer is made of polyvinyl chloride added with decabromodiphenyl ether, the compression protection layer is made of nitrile rubber added with polyvinyl chloride, and the insulating layer is made of cross-linked polyvinyl chloride.

[0009] By adopting the above technical solution, the main structural layers of the cable body contain the flame-retardant component polyvinyl chloride, so that the entire cable body has a good flame-retardant effect, thereby preventing the fire from spreading on the cable body.

[0010] Furthermore, a signal shielding layer of sparsely wound copper wires plus reverse copper tape or a copper wire structure is wrapped on one side of the flame retardant layer close to the pressure-resistant protective layer.

[0011] By adopting the above technical solution, the signal shielding layer of sparsely wound copper wire plus reverse copper tape or copper wire structure has a good shielding effect on the signal, avoiding the phenomenon of signal interference between cables when they are densely installed, and ensuring the stable and normal operation of intelligent electrical equipment.

[0012] Furthermore, the insulating layer is provided with a plurality of bending grooves at equal intervals along the length direction of the cable body, and the outer wall of the insulating layer is wrapped with a Kevlar fiber braided sheath layer.

[0013] By adopting the above technical solution, the setting of the bending groove does not affect the overall protection effect of the insulation layer, while providing sufficient bending space when the cable body is bent, so that the bending freedom becomes larger, the turning radius is smaller during installation, and the installation space and installation materials are saved. The Kevlar fiber braided sheath layer has good wear resistance and long life, which protects the cable body and prevents the insulation layer from direct contact and friction with external objects, ensuring that the cable body can be used stably for a long time.

[0014] In summary, the beneficial technical effects of the utility model are:

[0015] 1. The deformation airbag with inner and outer layers nested design is adopted. When the deformation airbag is adaptively deformed, the internal gas is compressed to produce external expansion force, avoiding direct local pressure transmission to the cable core body and causing damage to the cable core body, thereby producing an effect of wrapping the cable core body in an all-round and large area to concentrate local pressure and damage the cable core body;

[0016] 2. The main structural layers of the cable body contain flame-retardant polyvinyl chloride, which makes the cable body have good flame-retardant effect and prevents the fire from spreading on the cable body;

[0017] 3. The bending groove and Kevlar fiber braided sheath layer are used to save installation space and installation materials, protect the cable body and prevent the insulation layer from direct contact and friction with external objects, ensuring that the cable body can be used stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0021] Figure 3 It is an exploded schematic diagram of the overall structure of the utility model.

[0022] In the figure, 1. cable body; 2. flame-retardant cable core; 21. cable core body; 22. flame-retardant layer; 3. compression protection layer; 31. deformation airbag; 4. insulation layer; 41. bending groove; 5. signal shielding layer; 6. Kevlar fiber braided sheath layer. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 , the utility model provides a technical solution:

[0026] The cable body 1 includes a flame-retardant cable core 2, the flame-retardant cable core 2 includes a cable core body 21 twisted in a bundle, the cable core body 21 is wrapped with a flame-retardant layer 22, the flame-retardant cable core 2 is wrapped with a pressure-resistant protective layer 3, the pressure-resistant protective layer 3 includes an inner layer and an outer layer, the inner layer and the outer layer of the pressure-resistant protective layer 3 are respectively penetrated with a plurality of deformation airbags 31, the pressure-resistant protective layer 3 includes the inner layer and the outer layer of the deformation airbags 31 are mutually staggered, the outer edge of the pressure-resistant protective layer 3 is wrapped with an insulating layer 4, the flame-retardant layer 22 wraps the cable core body 21, has a good flame-retardant effect, the flame is not easy to spread, and the elastic material is shaped The deformable airbag 31 has a good buffering effect. When an external force is applied, the insulating layer 4 of the cable body 1 is partially compressed and deformed. When the pressure is transmitted to the pressure-resistant protective layer 3, the internal gas of the deformable airbag 31 is compressed when it is adaptively deformed to produce an external expansion force, which has a good buffering effect and avoids direct local pressure transmission to the cable core body 21, causing damage to the cable core body 21. The staggered arrangement of the deformable airbag 31 with nested inner and outer layers of the pressure-resistant protective layer 3 allows the deformable airbag 31 to wrap the cable core body 21 in an all-round and large area, avoiding the existence of dead corners that cause local pressure concentration to damage the cable core body 21.

[0027] The flame retardant layer 22 is made of polyvinyl chloride added with decabromodiphenyl ether, the compression protection layer 3 is made of nitrile rubber added with polyvinyl chloride, and the insulating layer 4 is made of cross-linked polyvinyl chloride. The main structural layers of the cable body 1 all contain the flame retardant component polyvinyl chloride, so that the cable body 1 as a whole has a good flame retardant effect to prevent the fire from spreading on the cable body 1.

[0028] The flame retardant layer 22 is wrapped on one side close to the compression protection layer 3 with a signal shielding layer 5 of sparsely wound copper wires and reverse copper tape or a copper wire structure. The signal shielding layer 5 of sparsely wound copper wires and reverse copper tape or a copper wire structure has a good shielding effect on the signal, avoiding the phenomenon of signal interference when the cable bodies 1 are densely installed, thereby ensuring the stable and normal operation of the intelligent electrical equipment.

[0029] The insulating layer 4 is provided with a number of bending grooves 41 at equal intervals along the length direction of the cable body 1. The outer wall of the insulating layer 4 is wrapped with a Kevlar fiber braided sheath layer 6. The setting of the bending grooves 41 does not affect the overall protection effect of the insulating layer 4. At the same time, it provides sufficient bending space when the cable body 1 is bent, so that its bending freedom becomes larger, the turning radius is smaller during installation, and more installation space and installation materials are saved. The Kevlar fiber braided sheath layer 6 has good wear resistance and a long service life, protects the cable body 1 and prevents the insulating layer 4 from direct contact and friction with external objects, ensuring that the cable body 1 can be used stably for a long time.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flame-retardant control cable with a compression protection structure for intelligent electrical equipment, comprising a cable body (1), characterized in that: The cable body (1) is provided with a flame-retardant cable core (2) inside, the flame-retardant cable core (2) comprises a cable core body (21) twisted in a bundle, the cable core body (21) is wrapped with a flame-retardant layer (22), the flame-retardant cable core (2) is wrapped with a pressure-resistant protective layer (3), the pressure-resistant protective layer (3) comprises an inner layer and an outer layer, the inner layer and the outer layer of the pressure-resistant protective layer (3) are respectively penetrated by a plurality of deformation airbags (31), the pressure-resistant protective layer (3) comprises inner and outer deformation airbags (31) arranged staggered with each other, and the outer edge of the pressure-resistant protective layer (3) is wrapped with an insulating layer (4).

2. The flame-retardant control cable with a pressure-resistant protection structure for intelligent electrical equipment according to claim 1, characterized in that: The flame retardant layer (22) is wrapped on one side close to the pressure-resistant protective layer (3) with a signal shielding layer (5) having a sparsely wound copper wire plus a reverse copper tape or a copper wire structure.

3. The flame-retardant control cable with a pressure-resistant protection structure for intelligent electrical equipment according to claim 1, characterized in that: The insulating layer (4) is made of cross-linked polyvinyl chloride, and the insulating layer (4) is provided with a plurality of bending grooves (41) at equal intervals along the length direction of the cable body (1). The outer wall of the insulating layer (4) is wrapped with a Kevlar fiber braided sheath layer (6).

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