CN218123035U

CN218123035U - Thermoplastic elastomer cable

Info

Publication number: CN218123035U
Application number: CN202222001551.2U
Authority: CN
Inventors: 汪为良; 徐振起; 李宗乐
Original assignee: Shandong Yanggu Wanlihang Cable Co ltd
Current assignee: Shandong Yanggu Wanlihang Cable Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-12-23
Anticipated expiration: 2032-08-01

Abstract

The utility model belongs to the technical field of the cable, a thermoplastic elastomer cable is proposed, including a plurality of cable cores, a plurality of cable cores include a main cable core and six side cable cores that distribute in the main cable core outside, the cable core includes many conductors, the outside of conductor is provided with insulating layer and shielding layer, the outside of a plurality of cable cores is provided with around covering, buffer layer, aluminium mesh weaving layer, aluminium shielding layer, filling layer, inner sheath, armor and oversheath, the buffer layer includes annular body portion, annular body portion's inner wall is provided with a plurality of interior convex body portions that will be the wave surface around the surface extrusion of covering and cable core, interior convex body portion's convex surface is first circular arc cylindrical surface, interior convex body portion's inside is provided with the buffering through-hole of fusiformis cross-section, the inner sheath is including the base sheathing layer that has the roll-pressing groove, the oversheath is including inside and outside nested first restrictive body and second restrictive body. The cable is reasonable in design, simple in structure, high in tensile strength, good in toughness, long in service life and suitable for large-scale popularization.

Description

Thermoplastic elastomer cable

Technical Field

The utility model belongs to the technical field of the cable, especially, relate to a thermoplastic elastomer cable.

Background

Thermoplastic elastomers are also known as elastomers or synthetic rubbers. The product not only has the excellent performances of high elasticity, aging resistance and oil resistance of the traditional cross-linked vulcanized rubber, but also has the characteristics of convenient processing and wide processing mode of common plastics. The product can be produced by processing modes such as injection molding, extrusion, blow molding and the like. Thermoplastic elastomer materials have become the latest materials for replacing the traditional rubber, and the application performance of the thermoplastic elastomer materials on cables is better. A cable generally includes a plurality of cores, an insulating layer, a wrapping layer, a shielding layer, a sheath, a filler, etc., wherein the core includes a plurality of conductors.

All cable cores in the existing thermoplastic elastomer cable are generally directly wrapped by wrapping tapes, although the compactness of the cable cores is improved, gaps among the cable cores are increased along with long-term use, the tensile strength inside the whole cable is influenced, and the electric performance of the cable is greatly influenced; secondly, although the overall thickness of the outer sheath of many cables is larger than that of other layers, once a wound occurs, the outer sheath tends to pull the overall thickness from inside to outside, and the actual service life of the cable is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that foretell cable exists, provide a reasonable in design, simple structure, tensile strength are higher, toughness is better and the longer thermoplastic elastomer cable of life.

In order to achieve the above object, the utility model discloses a technical scheme do, the utility model provides a pair of thermoplastic elastomer cable, including a plurality of cable cores, the cable core includes many conductors, the outside of conductor is provided with insulating layer and shielding layer, the outside of a plurality of cable cores is provided with around covering, inner sheath and oversheath, a plurality of cable cores include a main cable core and six side cable cores that distribute in the main cable core outside, be provided with the buffer layer around the outside of covering, the buffer layer includes annular portion, annular portion's inner wall is provided with a plurality of inner convex portions that will be the wave surface around the surface extrusion of covering and cable core, inner convex portion's convex surface is first circular arc cylindrical surface, inner convex portion's inside is provided with the buffering through-hole of fusiformis cross-section, the outside of buffer layer is provided with the aluminium mesh weaving layer, the outside of aluminium mesh weaving layer is provided with the aluminium shielding layer, the outside of aluminium shielding layer is provided with the filling layer, the inner sheath is the copper sheathing and sets up the outside at the filling layer, the inner sheath includes the base sheathing layer, the outside of base sheathing layer is provided with a plurality of pressing groove evenly distributed, the second is provided with the outer sheath cooperation of second convex area.

Preferably, the inner boss portion has a convex surface provided with a plurality of cylindrical grooves aligned in the longitudinal direction thereof.

Preferably, the length track of the rolling grooves is zigzag, and the distance between adjacent rolling grooves is larger than the groove width of the rolling grooves.

Preferably, opposite sides of the inner convex belt and the outer convex belt are both second arc cylindrical surfaces, and the radius of the root of the inner convex belt and the radius of the root of the outer convex belt are both smaller than the radius of the second arc cylindrical surfaces.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

1. the utility model provides a thermoplastic elastomer cable, through adopting the buffer layer not only can provide the buffering in this cable, can also effectively restrict the displacement of cable core in its inboard to improve the stability of all cable cores, avoid the cable to appear the condition of obviously flattening; the aluminum mesh braid layer plays a role in improving tensile strength, and meanwhile, the coordination of combining the aluminum shielding layer with the inner side structure of the aluminum shielding layer can be improved; the heat insulation performance of the aluminum shielding layer and the inner sheath is improved by the filling layer, and the inner sheath is provided with the rolling grooves, so that the rolling grooves can play shielding and tensile functions and have better flexibility; the outer sheath adopts the structure that the components of a whole are nested into one, and the outer sheath has better durability when the total thickness of the outer sheath is reduced, and the probability of occurrence of a through hole is reduced. The cable is reasonable in design, simple in structure, high in tensile strength, good in toughness and long in service life, and is suitable for large-scale popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a thermoplastic elastomer cable provided in accordance with an embodiment;

FIG. 2 is a development view of an inner sheath provided by an embodiment;

in the above figures, 1, cable core; 1a, a main cable core; 1b, side cable cores; 11. a conductor; 12. an insulating layer; 13. a shielding layer; 2. wrapping a covering; 3. a buffer layer; 31. a ring body portion; 32. an inner boss portion; 33. a buffer through hole; 34. a cylindrical groove; 4. an aluminum mesh braid layer; 5. an aluminum shield layer; 6. a filling layer; 7. an inner sheath; 71. a base coat layer; 72. rolling the groove; 8. an armor layer; 9. an outer sheath; 91. a first sheath body; 92. a second sheath body; 93. an outer convex band; 94. an inner convex belt.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

Embodiment, as shown in fig. 1 and 2, the utility model provides a pair of thermoplastic elastomer cable, including a plurality of cable cores 1, cable core 1 includes many conductors, the outside of conductor is provided with insulating layer 12 and shielding layer 13, the outside of a plurality of cable cores 1 is provided with around covering 2, inner sheath 7 and oversheath 9. The cable core 1, the insulating layer 12, the shielding layer 13 and the wrapping layer 2 are prior art, and this embodiment is not described herein again. On this basis, the utility model provides a plurality of cable cores 1 include a main cable core 1a and six side cable cores 1b that distribute in the main cable core 1a outside, be provided with buffer layer 3 around the outside of covering 2, buffer layer 3 includes ring body 31, the inner wall of ring body 31 is provided with a plurality ofly will be around the interior convex part 32 that the surface extrusion of covering 2 and cable core 1 is the wave surface, the convex surface of interior convex part 32 is first circular arc cylindrical surface, the inside of interior convex part 32 is provided with fusiformis cross-sectional buffering through-hole 33, the outside of buffer layer 3 is provided with aluminium net weaving layer 4, the outside of aluminium net weaving layer 4 is provided with aluminium shielding layer 5, the outside of aluminium shielding layer 5 is provided with filling layer 6, inner sheath 7 is the copper sheath and sets up the outside at filling layer 6, inner sheath 7 includes base layer 71, the outside of base layer 71 is provided with a plurality of roll-in grooves 72 along its global evenly distributed, be provided with between inner sheath 7 and the armor 9, inner sheath 9 includes first nested body 91 and second nested body 92, the outer surface of first sheath 91 is provided with the cooperation of second sheath 93 with the convex area.

In the cable, the six side cable cores 1b extrude and abut against the main cable core 1a from outside to inside, the six side cable cores 1b are not easy to translocate or stagger with the main cable core 1a, and meanwhile, the inner convex part 32 and the different side cable cores 1b are convenient to form a stable mechanical clamping relation, so that the stability of the internal structure of the cable is improved. The inner convex part 32 directly extrudes the adjacent cable cores 1 in a manner of matching with the quantity of the cable cores 1, and the inner convex part 32 can be automatically deformed due to the design of the internal buffering through holes 33 after being pressed, and applies action counter force to the cable cores 1, so that the stability of the cable cores 1 on the inner side of the buffering layer 3 is improved, the condition that the cable is obviously flattened is effectively avoided, and the flexibility and the tensile strength of the cable are correspondingly ensured. The aluminum mesh braid layer 4 plays a role in improving tensile strength, and can improve the coordination of the aluminum shielding layer 5 after being combined with the inner side structure of the aluminum shielding layer; the heat insulation performance and the flame retardant performance of the aluminum shielding layer 5 and the inner sheath 7 are improved by the filling layer 6; the inner sheath 7 is designed with the rolling groove 72, so that the extensibility of the outer surface can be improved, the flexibility is improved, and the basic shielding and tensile functions can be fully exerted. The outer sheath 9 is of a split nested structure, so that the total thickness of the outer sheath 9 can be reduced when the outer sheath 9 is extruded, but the outer sheath still has good durability, particularly the combined design of the first sheath body 91 and the second sheath body 92 greatly reduces the probability of the occurrence of a through hole, and the physical and chemical properties of the whole sheath cannot be weakened.

In order to improve the limit effect of the buffer layer 3 on the inner cable core 1b, the utility model discloses be provided with a plurality of cylinder grooves 34 unanimous with its length direction on the convex surface of the inner convex part 32. The cylindrical grooves 34 can provide a certain deformation amount for the inner convex part 32, so that the inner convex part can automatically generate reasonable contraction and extension according to the compression condition, and dynamic pressure is applied to the cable core 1 and the wrapping layer 2, so that the whole cable has better internal stability all the time, and the electrical performance of the whole cable can be better exerted.

In order to improve the tensile strength of inner sheath 7, the utility model provides a length orbit of roll-in groove 72 is the zigzag, and is adjacent interval between the roll-in groove 72 is greater than the groove width of roll-in groove 72. The tooth surfaces of the rolling grooves 72 can bear larger tensile force, and although the flexibility of the inner sheath 7 is improved due to the rolling grooves 72, the tensile strength of the whole can still meet the tensile requirement of the cable.

In order to improve the nesting stability of the outer sheath 9, the opposite sides of the inner convex belt 94 and the outer convex belt 93 provided by the utility model are the second arc cylindrical surface, and the root of the inner convex belt 94 and the root radius of the outer convex belt 93 are both smaller than the radius of the second arc cylindrical surface. Therefore, a certain axial offset range exists between the nesting surfaces of the first sheath body 91 and the second sheath body 92, but the original matched inner convex belt 94 and outer convex belt 93 are not rotated to other nodes, so that the whole outer sheath 9 can always keep higher stability and integrity under the action of external force, and the anti-shrinkage effect is better.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. The thermoplastic elastomer cable comprises a plurality of cable cores, wherein the cable cores comprise a plurality of conductors, insulating layers and shielding layers are arranged outside the conductors, a wrapping layer, an inner sheath and an outer sheath are arranged outside the cable cores, the thermoplastic elastomer cable is characterized in that the cable cores comprise a main cable core and six side cable cores distributed outside the main cable core, a buffer layer is arranged outside the wrapping layer and comprises an annular body part, a plurality of inner convex body parts which extrude the outer surfaces of the wrapping layer and the cable cores to form a wavy surface are arranged on the inner wall of the annular body part, the convex surface of each inner convex body part is a first arc cylindrical surface, a buffering through hole with a fusiform cross section is arranged inside each inner convex body part, an aluminum mesh woven layer is arranged outside the buffer layer, an aluminum shielding layer is arranged outside the aluminum mesh woven layer, a filling layer is arranged outside the aluminum shielding layer, the inner sheath is a copper sheath and is arranged outside the filling layer, the inner sheath comprises a base sheath layer, a plurality of rolling grooves evenly distributed along the peripheral surface of the base sheath layer are arranged outside the base sheath layer, a second convex belt is arranged between the outer sheath and the outer sheath, and a second convex belt is arranged inside and outside the base sheath.

2. A thermoplastic elastomer cable according to claim 1, wherein the convex surface of the inner protrusion has a plurality of cylindrical grooves formed thereon in correspondence with the longitudinal direction thereof.

3. A thermoplastic elastomer cable according to claim 2, wherein the length locus of said embossed grooves is zigzag, and the interval between adjacent said embossed grooves is larger than the groove width of the embossed grooves.

4. A thermoplastic elastomer cable according to claim 3, wherein opposite sides of the inner and outer convex bands are each a second circular cylindrical surface, and wherein a radius of each of a root portion of the inner convex band and a radius of a root portion of the outer convex band are smaller than a radius of the second circular cylindrical surface.