CN203038691U

CN203038691U - Improved soft cable

Info

Publication number: CN203038691U
Application number: CN 201220736301
Authority: CN
Inventors: 刘辉; 张银中; 姚春玲; 潘军
Original assignee: SHANGHAI NANDA GROUP CO Ltd
Current assignee: Shanghai Ober New Materials Co ltd
Priority date: 2012-12-27
Filing date: 2012-12-27
Publication date: 2013-07-03
Anticipated expiration: 2022-12-27

Abstract

The utility model discloses an improved soft cable which is formed by stranding a plurality of conducting wires. Each of the conducting wires is formed by stranding wires. A wrapping belt which binds the conducting wires to form an integrative assembly is arranged outside the conducting wires. The soft cable comprises at least two layers of stranded layer. The conducting wires in each stranded layer are in circular distribution, and a stranded layer of an innermost layer is a hollow structure. A stranded pitch between wires is large, and a stranded pitch of an outermost layer is far smaller than stranded pitches of other stranded layers. A stranded direction between wires is same with a stranded direction of each stranded layer. The improved soft cable has the advantages that compared with an existing cable, the diameter is decreased in the condition of the same current-carrying capacity, the softness is high, and a small bending angle is occupied in a bending with a large angle; conducting wires in the cable are not easy to be loose and deformed, and the rounding of the surface can be maintained in bending.

Description

A kind of modified model flexible cable

Technical field

The utility model relates to the cable technology field, particularly a kind of modified model flexible cable.

Background technology

Little and electrical property is identical with hard conductor with mechanical performance because of its bending radius for flexible cable, therefore is used widely in all trades and professions, particularly electric equipment terminal junction, because of its angle of bend bigger, needed bending radius is less, so shared space is narrow and small, is convenient to construction and installation.

Make Cable Bending Radius littler, except the insulation and sheath material of using the mechanical performance weakness, main is the flexibility of cable conductor.Regulation to the 5th class and the 6th class flexible conductor among standard GB/T3956-2008 is as follows: 20 ℃ of conductor DC resistances are not more than standard code, and the conductor filament diameter must not be greater than national Specification.Concrete conductor monofilament radical, conductor direction of lay and strand radical be regulation not.

The general synnema machine of using earlier of existing flexible cable is with copper filament tow skein silk strand, again strand is twisted into conductor with stranding machine, this flexible cable usually adopts the structure that tangles of just restoring to norm of " 1+6+12 " class, be about to synnema and be twisted into lead, and around the 1 stranded 6 leads formation of lead ground floor strand layer, and twist the external stranded second layer of being formed by 12 leads of layer at this and twist layer; Direction of lay is opposite between each strand layer, and the stranded side of the synnema of the lead between each layer is also opposite.This cable is through after the less bend radius, and conductor has protruding phenomenon, and its angle of bend is little, and required bending radius is also not ideal enough.

The utility model content

The purpose of this utility model is to provide a kind of modified model flexible cable, by adopting hollow stranded mode, has overcome the dissatisfactory shortcoming of existing cable angle of bend, thereby realizes the purpose of this utility model.

The technical problem that the utility model solves can realize by the following technical solutions:

A kind of modified model flexible cable forms by some leads are stranded, and each lead forms by synnema is stranded, and lead also is provided with outward and brings lead together become one band, and described synnema is circle metal monofilament, wherein:

Comprise in the flexible cable at least by some leads are stranded forming two-layer strand layer, the lead in each strand layer is the center of circle and distributes, and the strand layer of innermost layer is hollow-core construction;

Pitch stranded between the synnema is bigger, and the twisting pitch of outermost layer twisted layer conductor is less than the twisting pitch of other twisted layer conductors, and it is peripheral that band is arranged on outer strand layer, forms the cable of a smooth in appearance rounding;

Direction of lay between the synnema, the direction of lay of each twisted layer conductor are all identical.

In a preferred embodiment of the present utility model, be provided with two-layer strand layer in the flexible cable.

Need to prove that especially the number of conductors of the strand layer of innermost layer is 5 in the flexible cable, the number of conductors of outermost layer strand layer is 11.

In a preferred embodiment of the present utility model, between the synnema, the direction of lay of each twisted layer conductor is left-hand.

The beneficial effects of the utility model are:

With respect to existing cable, diameter reduces to some extent under the situation of identical ampacity, and the pliability height, can take very little bending angle than the bending of wide-angle the time; The lead of cable inside is difficult for loose distortion, and when bending took place, appearance can keep rounding.

Description of drawings

Fig. 1 is a kind of modified model flexible cable described in the utility model generalized section in the specific implementation.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.

Be illustrated in figure 1 as a kind of modified model flexible cable described in the utility model, comprise lead 1 and band 3, wherein, lead 1 is by some synnema 2 stranded forming, and synnema 2 is circle metal monofilament, and the twisting pitch of synnema 2 should be big as far as possible; In the present embodiment, be provided with two-layer strand layer in the flexible cable, in being respectively strand layer 5 and be located in the outer strand layer 4 of strand layer 5 outside, interior strand layers 5 comprises 5 according to the lead 1 of circle distribution, and the center do not arrange lead, is hollow-core construction; The outer strand layer 4 of interior strand layer 5 outside comprises 11 leads 1, and wherein, the lead of the direction of lay of synnema 2, interior strand layer 4 and the outer lead direction of lay that twists layer 5 are stranded left, and the twisting pitch of outer strand layer 4 lead should be as best one can little; Twist layer 4 outside wrapped one deck band 3 at last outside, it is an integral body that two layer conductors are brought together.

When producing this flexible cable, use the synnema machine that synnema 2 is twisted into lead 1 earlier, because the requirement of the twisting pitch of synnema 2 is big as much as possible, thereby the pitch gear transformation of synnema machine can be reached the purpose than coarse pitch; Lead 1 is twisted into the interior strand layer 4 of hollow by stranding machine, and twists layer 4 outside its outside stranded formation, the strand layer is 4 o'clock outside stranded, and that the pitch gear of stranding machine should be adjusted is big as far as possible; Twist layer 4 outside wrapped one deck band at last outside.

Because the utility model is hollow structure, and be provided with the interior strand layer of 5 leads and the outer strand layer of 11 leads, i.e. the arrangement of " 0+5+11 ", cable has bigger space when bending; Because the twisting pitch of synnema 2 is bigger, lead 1 deformation extent of formation is bigger, is easy to the space is filled up, and with respect to existing cable, and under the constant situation of ampacity, the external diameter of cable can also reduce to some extent.

Moreover because the direction of lay of each strand layer is all identical, during the cable bending, the space between the lead can be filled uniformly, does not have projection on the band.

Moreover, because the twisting pitch of outermost layer strand layer is very little, adding that the outside also is provided with band, the situation of loose distortion can not take place in cable, and its profile can keep rounding, and the bending of smaller angle takes place immediately, and cable also can not be out of shape or be loose.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a modified model flexible cable forms by some leads are stranded, and each lead forms by synnema is stranded, and some leads also are provided with outward and bring some leads together become one band, and described synnema is circle metal monofilament, it is characterized in that:

Comprise in the described flexible cable at least by some leads are stranded forming two-layer strand layer, the lead in each strand layer is the center of circle and distributes, and the strand layer of innermost layer is hollow-core construction;

Pitch stranded between the described synnema is bigger, and the twisting pitch of outermost layer twisted layer conductor is less than the twisting pitch of other twisted layer conductors, and it is peripheral that band is arranged on outer strand layer, forms the cable of a smooth in appearance rounding;

Direction of lay between the described synnema, the direction of lay of each twisted layer conductor are all identical.

2. a kind of modified model flexible cable according to claim 1 is characterized in that, is provided with two-layer strand layer in the described flexible cable.

3. a kind of modified model flexible cable according to claim 2 is characterized in that, the number of conductors of the strand layer of innermost layer is 5 in the described flexible cable, and the number of conductors of outermost layer strand layer is 11.

4. a kind of modified model flexible cable according to claim 1 is characterized in that, between the described synnema, the direction of lay of each twisted layer conductor is left-hand.