CN219163039U

CN219163039U - Flexible cable

Info

Publication number: CN219163039U
Application number: CN202223566392.7U
Authority: CN
Inventors: 蔚彦丽; 齐刚; 邱绍坤; 荣沭; 俞俊; 谢清心
Original assignee: Youyi Cable Zhangjiagang Co ltd
Current assignee: Youyi Cable Zhangjiagang Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-09
Anticipated expiration: 2032-12-30

Abstract

The application discloses flexible cable relates to cable technical field, includes: a cable core, the cable core further comprising: the first heart yearn, the quantity of first heart yearn sets up to eight groups, eight groups the first pitch of heart yearn sets up rationally, first heart yearn still includes: a first conductor disposed in the center of the first core wire; an insulating material I, wherein the insulating material I is extruded to encapsulate the conductor I; the second core wire is arranged in the center of the cable core, the second core wire and the first core wire are twisted into a cable by adopting a structure of adding eight groups, and the second core wire further comprises: a first filling, which is arranged in the second core wire; the second insulating material is extruded and wrapped with the first filling material; an inner sheath surrounding the cable core; and the outer sheath is used for extruding the cable core and the inner protective layer. The purpose of this application is to solve the problem that current flexible cable's cycle life-span is less than 500 ten thousand times.

Description

Flexible cable

Technical Field

The application relates to the technical field of cables, in particular to a flexible cable.

Background

In recent years, there has been an increasing demand for flexible cables in various industries, which are one type of cables that are positioned in a high-end type of cable, and whose special use performance is excellent far beyond that of a conventional cable. In terms of technology, the manufacture of the flexible cable is complex compared with the common cable, and the requirement is high. The copper wires used are all very fine copper wires, and are very difficult to test in terms of bundle wires, and require very careful and intensive experience. The formula is important in the aspect of sizing material, the flexibility of the finished cable is determined, and the specific requirements of the flexible cable are bending resistance, wear resistance, oil resistance, high flexibility and the like.

The flexible cable is required to achieve the characteristics of good flexibility and long service life only by matching between the conductor and the sheath rather than by the flexibility of the rubber, but mechanical damage to the cable caused by bending and torsion is unavoidable, and the sheath of the conventional flexible cable cannot completely protect the conductor, so that the circulating bending life of the conventional flexible cable is less than 500 ten thousand times.

In view of this, a flexible cable having a cyclic bending life of greater than 500 ten thousand times is provided.

Disclosure of Invention

The utility model provides a solve the problem that current flexible cable's cycle life-span is less than 500 ten thousand times, for solving above-mentioned technical problem, provide a flexible cable that is greater than 500 ten thousand times at cycle life-span.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: a flexible cable, comprising: the cable core, the cable core still includes: first heart yearn, the quantity of first heart yearn sets up to eight groups, and eight group heart yearn pitch rationally set up, and first heart yearn still includes: a first conductor arranged in the center of the first core wire; an insulating material I, wherein the insulating material I is used for extruding a conductor I; core wire two sets up in the central authorities of cable core, and core wire two and core wire one adopt a set of structure hank of adding eight groups to become the cable, and core wire two still includes: the first filling is arranged in the second core wire; the second insulating material is extruded and filled with the first insulating material; the inner protection layer is wound around the cable core; the outer sheath is used for extruding the cable core and the inner sheath.

Further, according to an embodiment of the present application, the inner protection layer further includes a first strap, a first shielding strap, and a second strap.

Further, according to an embodiment of the present application, wherein the first strap is wrapped around the first strap.

Further, according to an embodiment of the present application, wherein the shielding is a woven shielding tape.

Further, according to an embodiment of the present application, the second strap is wrapped around the outer layer of the first shield.

Further, according to the embodiment of the application, the first conductor is a 6-class soft copper conductor, and the first insulation material is a TPEE insulation extrusion conductor.

Further, according to the embodiment of the application, the first filling yarn is TPE filling yarn, and the second insulating material is PVC insulating extrusion packaging filling yarn.

Further, according to an embodiment of the present application, the first strap and the second strap are made of PTFE strap materials.

Further, according to an embodiment of the present application, the shielding is made of tin-plated copper wire material.

Further, according to an embodiment of the present application, the outer sheath is a TPEE outer sheath.

Compared with the prior art, the cable core wire II in the cable core is insulated and filled, the core wire II is prevented from being dissociated to the central area of the cable, the core wire I in the cable core and the core wire II are designed into the cable through the 1+8 structure, and then the cable is overlapped and wrapped with the inner protection layer, so that the bending times of the cable are greatly improved, the flexibility of the cable is ensured, the problem that the circulating bending life of the conventional flexible cable is less than 500 ten thousand times is solved, and the better effect that the circulating bending life of the flexible cable is more than 500 ten thousand times is achieved.

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a flexible cable according to the present application.

Fig. 2 is a schematic structural view of a flexible cable core according to the present application.

Fig. 3 is a schematic structural view of an inner sheath of a flexible cable according to the present application.

Fig. 4 is a schematic structural view of a torsion layer of a flexible cable according to the present application.

Fig. 5 is a schematic structural view of a flexible cable buffer layer according to the present application.

In the accompanying drawings

1. Cable core 11, core wire 111, conductor

112. Insulating material one 12, core wire two 121, and filling one

122. Insulating material II 2, inner protective layer 21 and belting I

22. Shield I23, strap II 3 and outer sheath

4. Torsion layer 5, buffer layer

Detailed Description

In order to make the objects, technical solutions, and advantages of the present utility model more apparent, the embodiments of the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present utility model, are intended to be illustrative only and not limiting of the embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

In the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Example 1:

as shown in fig. 1 to 3, the present embodiment provides a flexible cable, which includes: the cable core 1, the cable core 1 further comprises: the first core wire 11, the quantity of first core wire 11 sets up to eight groups, and eight groups of first core wires 11 pitch rationally sets up, and first core wire 11 still includes: a conductor one 111, the conductor one 111 being disposed in the center of the core wire one 11; an insulating material one 112, the insulating material one 112 is extruded with the conductor one 111; core wire two 12, core wire two 12 sets up in the central authorities of cable core 1, and core wire two 12 and core wire one 11 adopt the structure hank of a set of eight groups to become the cable, and core wire two 12 still includes: a filler one 121, the filler one 121 being disposed in the core wire two 12; the second insulating material 122, the second insulating material 122 is extruded and filled with the first 121; the inner protection layer 2, the inner protection layer 2 wraps the cable core 1; the outer sheath 3, the outer sheath 3 is extruded to cover the cable core 1 and the inner sheath 2.

The first conductor 111 is a 6-class soft copper conductor, and the material has good flexibility and bending performance, so that stable transmission of electrical performance of the cable in the use process is ensured. The first insulating material 112 is a first TPEE (Thermoplastic Polyester Elastomer ) insulating extruded conductor 111, and the TPEE material is a block copolymer containing a polyester hard segment and a polyether soft segment, has the elasticity of rubber and the strength of engineering plastics, and has better processability and longer service life compared with the rubber; compared with engineering plastics, the flexible cable has the characteristics of high strength, better flexibility and dynamic mechanical property, and can meet the electrical insulation and dynamic use characteristics of the cable, so that the cable cannot be broken in the bending and twisting processes, and the cycle bending life of the flexible cable can be longer than 500 ten thousand times.

The first filler 121 is filled with TPE (Thermoplastic Elastomer ) filler yarn, and the second insulating material 122 is filled with PVC (Polyvinyl Chloride ) insulating extrusion. The second core wire 12 adopts the structural design of the TPE filling yarn insulated by the extrusion PVC, the TPE filling yarn has good elasticity and good compatibility with PVC materials, the first filling 121 and the second insulating material 122 after extrusion ensure the roundness of the cable after cabling according to the PVC insulating thickness of the cable structural design, the phenomenon that the second core wire 12 is free to the central area of the cable or jumps to strand is avoided, the second core wire 12 passes through a talcum powder machine, the second core wire 12 has good slippage, meanwhile, the excellent mechanical property of the PVC meets the excellent tensile property of the cable in the round trip use process, the excellent elasticity and flexibility of the TPE filling yarn ensure that the cable is not broken in the bending and torsion process, and the better effect that the cycle bending life of the flexible cable can be more than 500 ten thousand times is achieved.

The first core wire 11 and the second core wire 12 in the flexible cable adopt 1+8 structural design, and the inner protective layer 2 is overlapped and wrapped after the cable is formed, so that the cable can be prevented from being loosened or deformed during bending during the cable forming, the round and compact cable core 1 is ensured, and the flexible cable has the characteristics of good structural toughness, high longitudinal strength and easy transverse deformation, and can be used for a long time even at a high temperature of 260 ℃, so that the bending times, the working temperature and the transmission capacity of the cable can be greatly improved, the flexibility of the cable is ensured, the flexible cable is not broken during bending and torsion, and the better effect that the cyclic bending life of the flexible cable can be more than 500 ten thousand times is achieved.

The inner protection layer 2 further comprises a first wrapping belt 21, a first shielding belt 22 and a second wrapping belt 23, wherein the first wrapping belt 21 is wrapped around the first wrapping belt 121, the first shielding belt 22 is woven to shield the outer layer of the first wrapping belt 21, and the second wrapping belt 23 is wrapped around the outer layer of the first shielding belt 22.

The first shielding layer 22 of the inner protective layer is made of tinned copper wires, and a layer of tinned copper wires with the weaving density being more than or equal to 85% is woven outside the cable element, so that the cable has strong external electromagnetic interference resistance, stable data and signal transmission is ensured, and the cable is particularly suitable for occasions with high requirements for resisting electromagnetic interference.

The first wrapping tape 21 and the second wrapping tape 23 in the inner protective layer 2 are made of PTFE (Polytetrafluoroethylene) wrapping tape materials, and the first wrapping tape 21 is an ideal high-frequency dielectric material with low dielectric constant, small dielectric loss, high electric strength, self-lubricating property, non-tackiness, high electrical insulation and good ageing resistance, and can prevent the cable from loosening or deforming during bending when being cabled so as to ensure the rounding and compactness of the cable core 1, and the third wrapping tape 23 is wrapped with a layer of PTFE wrapping tape outside the braiding shield, so that the adhesion between the outer sheath 3 and the first shielding tape 22 can be prevented, the relative sliding between insulating core wires can be met, the bending times of the cable in the operation process can be improved, the cable is ensured to be well flexible and not to be broken in the bending and torsion processes, and the cycle bending life can be more than 500 ten thousand times.

Finally, the outer sheath 3 adopts a TPEE (Thermoplastic Polyester Elastomer ) outer sheath, and the material has good radiation resistance, deflection resistance, creep resistance, impact resistance and fatigue resistance, high tearing strength and high friction resistance, and ensures the good service life of the cable in the complex use environment and dynamic operation process.

As shown in Table 1, after a plurality of tests, the flexible cable has better effect on the cycle bending life and the cable state compared with the existing flexible cable.

TABLE 1

Example 2:

this embodiment provides a flexible cable having the same structural features as embodiment 1.

As shown in fig. 4, the outer layer of the inner sheath 2 is further extruded with a torsion layer 4, and the outer sheath 3 covers the torsion layer 4.

The torsion layer 4 is formed by intertwining two strands of aramid fiber, the aramid fiber is novel high-tech synthetic fiber, the aramid fiber has excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength is 5-6 times of that of steel wires, the modulus is 2-3 times of that of steel wires or glass fiber, the toughness is 2 times of that of the steel wires, the weight is only about 1/5 of that of the steel wires, and the aramid fiber is not decomposed and does not melt at the temperature of 560 ℃. The cable has good insulativity and ageing resistance, has a very long life cycle, has stronger anti-twisting capability, ensures that the flexible cable is good in bending and twisting processes and cannot be broken, and ensures that the cycle bending life of the flexible cable can be longer than 500 ten thousand times.

As shown in table 2, the flexible cable of example 2 had better effects than the cyclic bending life and cable state after multiple tests.

TABLE 2

Example 3:

this embodiment provides a flexible cable having the same structural features as those of

embodiments

1 and 2.

As shown in fig. 5, the torsion layer 4 and the outer sheath 3 further include a buffer layer 5, the buffer layer 5 wraps the torsion layer 4, and the buffer layer 5 is used for protecting the flexible cable.

The buffer layer 5 is made of rubber or elastomer or a material with a certain elasticity, and the like, and the material is deformed under the action of external force, and can be quickly recovered after the external force is withdrawn, so that when the flexible cable is bent and twisted, the force applied to the flexible cable is reduced due to the elasticity of the elastic material, and the flexible cable is further ensured to be good in bending and twisting processes and not to be broken, so that the better effect that the cycle bending life of the flexible cable can be longer than 500 ten thousand times is achieved.

As shown in table 3, the flex cable of example 3 had better effects than the cyclic bending life and cable state after multiple tests.

TABLE 3 Table 3

While the foregoing has been described in terms of illustrative embodiments thereof, so that those skilled in the art may appreciate the present application, it is not intended to be limited to the precise embodiments so that others skilled in the art may readily utilize the present application to its various modifications and variations which are within the spirit and scope of the present application as defined and determined by the appended claims.

Claims

1. A flexible cable, comprising:

a cable core, the cable core further comprising:

the first heart yearn, the quantity of first heart yearn sets up to eight groups, eight groups the first pitch of heart yearn sets up rationally, first heart yearn still includes:

a first conductor disposed in the center of the first core wire;

an insulating material I, wherein the insulating material I is extruded to encapsulate the conductor I;

the second core wire is arranged in the center of the cable core, the second core wire and the first core wire are twisted into a cable by adopting a structure of adding eight groups, and the second core wire further comprises:

a first filling, which is arranged in the second core wire;

the second insulating material is extruded and wrapped with the first filling material;

an inner sheath surrounding the cable core;

and the outer sheath is used for extruding the cable core and the inner protective layer.

2. The flexible cable of claim 1, wherein the inner sheath further comprises a first strap, a first shield, and a second strap.

3. A flexible cable according to claim 2, wherein said strap-one wraps around said filler-one.

4. A flexible cable according to claim 3, wherein said shield one braid shields an outer layer of said tape one.

5. The flexible cable of claim 4, wherein said second strap is wrapped around an outer layer of said first shield.

6. A flexible cable according to claim 1, wherein said first conductor is a 6-class soft copper conductor and said first insulation material is a TPEE insulation extrusion coating said first conductor.

7. A flexible cable according to claim 1, wherein said first filler is a TPE filler yarn and said second insulating material is PVC insulation extrusion coated with said first filler.

8. The flexible cable of claim 2, wherein the first strap and the second strap are both made of PTFE strap material.

9. A flexible cable according to claim 2, wherein said shield is formed of tin-plated copper wire material.

10. A flexible cable according to claim 1, wherein the outer sheath is a TPEE outer sheath.