CN217506998U - Polyvinyl chloride insulation shielding control cable - Google Patents

Abstract

The utility model relates to the technical field of control cables, in particular to a polyvinyl chloride insulation shielding control cable, which comprises a grounding wire core, a pair twisting wire core, a wrapping layer, a filling layer, a shielding layer and an outer sheath, wherein the pair twisting wire core comprises a pair of wire cores twisted with each other and a coating layer coated outside the wire cores, the cross section of the coating layer is in an oblate shape, two side surfaces of the cross section width direction of the coating layer are both provided with grooves extending along the length direction, one end of the cross section length direction of the pair twisting wire core is attached to the outer wall of the grounding wire core for twisting, the inner side end of the twisted pair twisting wire core is compact after twisting, the outer side end is loose, the cable has an elastic deformation activity space under the bending state, thereby being easier to bend and twist, and the two side surfaces of the pair twisting wire core are both provided with grooves, so that the pair twisting wire core is easier to deform in the radial direction, thereby the whole cable is easy to bend, the bending and twisting device is suitable for the working condition environment needing frequent bending and twisting.

Description

Polyvinyl chloride insulation shielding control cable

Technical Field

The utility model relates to a control cable technical field particularly relates to a polyvinyl chloride insulation shielding control cable.

Background

The twisted pair cable is formed by twisting two different insulated wires with each other, and is similar to twisted pair cable in function, and is used to reduce the influence of electromagnetic radiation and external electromagnetic interference.

As shown in fig. 1, the outer sides of the twisted pairs in the existing twisted pair cable are usually coated with insulating layers with circular cross sections, and several pairs of twisted pairs are twisted and wrapped again to form a cable core, so that under the condition of bending and twisting of the control cable (a control line of a mechanical execution component requiring frequent repeated actions), the twisted pair insulating layers are in contact with each other, extruded and rubbed, and accordingly, the abrasion and disconnection are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art, provide a polyvinyl chloride insulation shielding control cable, include: the grounding wire core comprises a grounding wire and an insulating coating layer extruded outside the grounding wire; the multiple groups of twisted wire cores are twisted on the outer side of the grounding wire core; the wrapping layer is wrapped on the outer side of the twisted wire core; the filling layer is filled between the wrapping layer and the twisted pair wire core; the shielding layer is coated on the outer side of the wrapping layer; the outer sheath is extruded on the outer side of the shielding layer; the twisted pair wire core comprises a pair of wire cores twisted with each other and a coating layer coated outside the wire cores, the cross section of the coating layer is oblate, grooves extending along the length direction are formed in the two side faces of the width direction of the cross section of the coating layer, and one end of the length direction of the cross section of the twisted pair wire core is attached to the outer wall of the grounding wire core in a twisted mode.

Further, the wire core comprises a plurality of groups of mutually twisted wires and an insulating layer extruded outside the plurality of wires.

Further, the cross-sectional shape of the groove is semicircular, rectangular or triangular.

Further, the distance between the two wire cores in the cladding layer is larger than the radius of the wire cores and smaller than the diameter of the wire cores.

Further, the width of the opening side of the groove is larger than the distance between the two wire cores in the cladding layer.

Furthermore, the pair-twisted wire core is wound around the periphery of the grounding wire core in the direction of inclining the diameter of the grounding wire core.

Furthermore, the wire of the wire core is a copper wire, the diameter of the copper wire is 0.4 mm-1 mm, the twisting direction is anticlockwise, the lay length is 3.81 cm-14 cm, and the difference of the twisting lengths of the adjacent twisted pairs is about 1.27 cm.

Further, the insulating layer adopts flexible polyvinyl chloride insulating layer.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a polyvinyl chloride insulation shielding control cable adopts the pair twist sinle silk of oblate cross-section, medial extremity is compact after its transposition, the outside end is loose, make the cable under the bending condition, elastic deformation's activity space has, the extrusion force that so bending condition pair twist sinle silk produced each other will reduce, crooked and distortion more easily from this, and the recess is all seted up to the both sides face of pair twist sinle silk, make pair twist sinle silk more easily in the radial deformation that upwards, thereby the cable is whole flexible, be fit for the operating mode environment that needs frequent crooked kink.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the inventive subject matter of this disclosure.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic cross-sectional view of a conventional pvc insulated shielded control cable according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a polyvinyl chloride insulation shielding control cable according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of another twisted structure of the pvc insulated shielding control cable according to the embodiment of the present invention;

fig. 4 is a schematic partial perspective view of a twisted wire core in a polyvinyl chloride insulation shielding control cable according to an embodiment of the present invention.

Detailed Description

For a better understanding of the technical aspects of the present invention, specific embodiments are described below in conjunction with the appended drawings.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

Because the twisted pair among the current control cable is tightly packed together around the package, the control line of using in movable parts such as some arms or vehicle cantilevers, under long-term frequent active state, the mutual contact extrusion of twisted pair insulating layer and friction to the condition of the wearing and tearing broken string that arouses, consequently, the utility model aims at providing a polyvinyl chloride insulation shielding control cable can adapt to the operating mode environment of frequent crooked kink.

Referring to fig. 3, a polyvinyl chloride insulation shielding control cable comprises a grounding wire core 1, a twisted pair wire core 2, a filling layer 3, a wrapping layer 4, a shielding layer 5 and an outer sheath 6.

Wherein, earth connection core 1 sets up the axle center position at the cable, including earth conductor 11 and crowded package at the insulating coating 12 in the earth conductor 11 outside, earth conductor 11 adopts pure copper single conductor, and insulating coating 12 adopts flexible polyvinyl chloride insulating material, and crowded package forms earth connection core 1 in the outside of earth conductor 11.

Combine fig. 3 and fig. 4 to show, multiunit pair twist sinle silk 2 transposition is in the outside of earth connection core 1, and pair twist sinle silk 2 includes a pair of sinle silk 21 of transposition each other and the cladding at the coating 22 of the outside of sinle silk 21, and the cross-section of coating 22 is the oblate, and the recess 201 that extends along length direction is all seted up to the both sides face of coating 22 cross-section width direction, and the one end subsides of 2 cross-section length directions of pair twist sinle silk are to the outer wall transposition of earth connection sinle silk 1.

In this embodiment, because the cross-section of pair twist sinle silk 2 is oblate, for circular cross-section, its area is littleer to after the transposition is at earth core 1, it is compacter to be close to earth core 1 one end, and the one end that is close to oversheath 6 is then looser, makes the cable under the bending condition, has elastic deformation's activity space between pair twist sinle silk 2, and the extrusion force that so bending condition pair twist sinle silk 2 produced each other will reduce, thereby crooked and distortion more easily.

And the both sides face of coating 22 cross-section width direction all sets up the recess 201 that extends along length direction, and in optional embodiment, the cross-sectional shape of recess 201 is semi-circular, rectangle or triangle-shaped, so, and pair twist sinle silk 2 warp more easily in footpath to there is not relative static pressure, friction between the twist sinle silk 2, makes the cable whole flexible, is fit for the operating mode environment that needs frequent bending kink.

In a preferred embodiment, the spacing between the two wire cores 21 within the cladding 22 is greater than the radius of the wire cores 21 and less than the diameter of the wire cores 21, and the width of the open side of the groove 201 is greater than the spacing between the two wire cores 21 within the cladding 22.

If the interval between two sinle silks 21 is too big, then the width of stranded conductor core 2 is great, and is crushd easily, and when the interval between two sinle silks 21 is undersize, then the width of stranded conductor core 2 is little, and stranded conductor core 2 can't be crooked and release the stress that the extrusion produced, and in preferred embodiment, the width of stranded conductor core 2 is appropriate, under the atress extrusion, can be crooked and absorb the stress that the extrusion produced to after pressure release, stranded conductor core 2 can elastic recovery, keeps cable stable in structure.

Further, the wire core 21 includes a plurality of groups of mutually twisted conductive wires 211 and an insulating layer 212 extruded outside the plurality of conductive wires 211, the conductive wires 211 are copper conductive wires, the diameter of the copper conductive wires is 0.4mm to 1mm, the twisting direction is counterclockwise, the twisting pitch is 3.81cm to 14cm, and the difference of the twisting lengths of adjacent twisted pairs is about 1.27 cm. The insulating layer 212 is made of flexible polyvinyl chloride.

As shown in fig. 2, in order to make the twisted pair cores 2 more loose and have a softer bending characteristic, and to be able to adapt to the situation of high-frequency bending, the twisted pair cores 2 are wound around the grounding core 1 in a direction inclined to the diameter of the grounding core 1.

As shown in the combined figure 3, in order to make the end of the twisted wire core 2 close to the grounding wire core 1 relatively compact and the end close to the outer sheath 6 relatively loose, the twisted wire core 2 can adapt to the working condition occasion of repeated bending to a certain extent, the twisted wire core 2 is wound around the periphery of the grounding wire core 1 in the direction parallel to the diameter of the grounding wire core 1

Further, being the outside of pair twist sinle silk 2 around the package around covering 4, filling 3 is filling around between covering 4 and pair twist sinle silk 2, and the cladding of shielding layer 5 is in the outside around covering 4, and 6 crowded packages of oversheath are in the outside of shielding layer 5.

In specific embodiment, filling layer 3 adopts the elasticity filling rope, fill and strand in the space between pair twist sinle silk 2, make the whole rounding of cable, and can help deformation after 2 to the reconversion of pair twist sinle silk, with the holistic structural stability of reinforcing cable, adopt thin polyurethane around the band around covering 4, with the mode of indulging the package around the package in the outside of pair twist sinle silk 2 and elasticity filling rope, make the whole rounding shaping of cable, shielding layer 5 adopts the copper shielding net that flexible annealing thin copper wire woven, oversheath 6 adopts the crowded package shaping of polyurethane material.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is intended to cover by those skilled in the art various modifications and adaptations of the invention without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.

Claims (10)

1. A polyvinyl chloride insulation shielding control cable, comprising:

the grounding wire core (1) comprises a grounding wire (11) and an insulating coating layer (12) extruded outside the grounding wire (11);

the multiple groups of twisted wire cores (2) are twisted on the outer side of the grounding wire core (1);

the wrapping layer (4) is wrapped on the outer side of the twisted wire core (2);

the filling layer (3) is filled between the wrapping layer (4) and the twisted pair wire core (2);

the shielding layer (5) is coated on the outer side of the wrapping layer (4);

the outer sheath (6) is extruded on the outer side of the shielding layer (5);

wherein, pair twist sinle silk (2) include a pair of sinle silk (21) of twisting each other and the cladding be in coating (22) of the outside of sinle silk (21), the cross-section of coating (22) is the oblate, recess (201) that extend along length direction are all seted up to coating (22) cross-section width direction's both sides face, pair twist sinle silk (2) cross-section length direction's one end paste to the outer wall transposition of ground connection sinle silk (1).

2. The polyvinyl chloride insulation shielding control cable according to claim 1, wherein the core (21) comprises a plurality of groups of conductors (211) twisted with each other and an insulation layer (212) extruded outside the plurality of conductors (211).

3. The polyvinyl chloride insulation shielding control cable according to claim 1, wherein the cross-sectional shape of the groove (201) is a semicircle, a rectangle or a triangle.

4. The polyvinyl chloride insulation shielding control cable according to claim 1, wherein the distance between the two wire cores (21) in the coating layer (22) is larger than the radius of the wire cores (21) and smaller than the diameter of the wire cores (21).

5. The polyvinyl chloride insulation shielding control cable according to claim 4, wherein the width of the open side of the groove (201) is larger than the distance between the two wire cores (21) in the covering (22).

6. The insulation shielding control cable of polyvinyl chloride according to any one of claims 1 to 5, wherein the twisted pair core (2) is wound around the circumference of the ground core (1) in a direction inclined to the diameter of the ground core (1).

7. The insulation shielding control cable of polyvinyl chloride according to any one of claims 1-5, wherein the twisted pair core (2) is wound around the circumference of the grounding core (1) in a direction parallel to the diameter of the grounding core (1).

8. The polyvinyl chloride insulation shielding control cable according to any one of claims 1-5, wherein the insulation coating layer (12) is a flexible polyvinyl chloride insulation layer, and is extruded outside the grounding conductor (11) to form the grounding core (1).

9. The insulation shielding control cable of polyvinyl chloride according to claim 2, wherein the conductive wires (211) of the core (21) are copper wires, the diameter of the copper wires is 0.4 mm-1 mm, the twisting direction is counterclockwise, the lay length is 3.81 cm-14 cm, and the difference of the twist lengths of the adjacent twisted pairs is about 1.27 cm.

10. The pvc insulation shielded control cable of claim 2, wherein the insulation layer (212) is a flexible pvc insulation layer.

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