CN211629794U

CN211629794U - Cable distribution box

Info

Publication number: CN211629794U
Application number: CN202020707504.8U
Authority: CN
Inventors: 李金荣
Original assignee: Hubei Jinde Source Electrical Equipment Co ltd
Current assignee: Hubei Jinde Source Electrical Equipment Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-10-02
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a cable distribution box, belonging to the technical field of electrical accessories, comprising a detachable box body, wherein a conductive central terminal is fixed in the box body, and a plurality of sections of internal cables are connected on the central terminal; the box body is also provided with a plurality of through holes for external cables to extend into; the inner cable comprises a wire and a sheath wrapped outside the wire, wherein the outer wall of the sheath is formed by a plurality of annular bulges which are arranged at intervals, so that the outer wall of the sheath is of a corrugated pipe outer wall-shaped structure, and the inner wall of the sheath is tightly connected with the wire. The utility model discloses a distribution box is convenient and reliable when cable junction.

Description

Cable distribution box

Technical Field

The utility model belongs to the technical field of electrical accessories, especially, relate to a cable distribution box.

Background

The cable tapping box is mainly equipment for tapping, branching, connecting and converting a circuit of a cable line, generally, most of the cable tapping boxes are used for outdoor wiring, a cable joint is covered and protected by the tapping box, in practical application, two sections of cable heads to be connected need to be respectively stripped with a part of insulating layer (sheath) to expose a lead for connection and fixation, the cable head section needs to be stripped with tools such as an art designer knife and the like during connection, the operation is troublesome, the stripping length is basically subjectively estimated by manual roughness, sometimes the length is short, for a large-scale power transmission line, the cable is thick, the cut insulating layer is difficult to strip after the insulating layer is annularly cut by the art designer knife, namely, the insulating sheath still wrapped on the lead after the cutting is difficult to be easily pulled out, and the tightness between the lead and the sheath is always inappropriate, in addition, the connection of a plurality of cable heads can also cause the connection difficulty and is easy to loosen, so that the conventional cable distribution box is inconvenient and unreliable in wiring.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned technical problem, provide a cable distribution box, this cable distribution box has solved the problem that present cable distribution box is neither convenient nor reliable when the wiring among the prior art.

The technical scheme of the utility model as follows: a cable distribution box comprises a detachable box body, wherein a conductive central terminal is fixed in the box body, and a plurality of sections of internal cables are connected to the central terminal; the box body is also provided with a plurality of through holes for external cables to extend into;

the outer wall of the sheath of the internal cable is provided with a plurality of annular bulges which are arranged at intervals, so that the outer wall of the sheath is of a corrugated pipe outer wall-shaped structure, and the inner wall of the sheath is tightly connected with the lead of the internal cable.

The utility model has the advantages that: the cable distribution box is characterized in that a central terminal is pre-arranged in the detachable structure of the cable distribution box for a public wiring terminal, so that the condition that a plurality of cable heads are intensively connected and are easy to fall off and difficult to connect is avoided. In addition, the internal cable is preset in the tapping box, in order to facilitate the stripping of the insulating layer of the internal cable in the narrow tapping box, the traditional smooth circular tube type structure of the sheath is changed, the sheath is made into the structure of the outer wall of the corrugated tube, in the process of stripping the sheath of the cable, after a section of the sheath is annularly cut, when the cut sheath section is pulled outwards along the length direction of the lead by hands, because the annular bulge structure exists, an acting point can be provided, so that an operator has more sufficient force to apply on the cut sheath section and pull outwards, compared with the traditional smooth sheath outer wall, the pinching force of the sheath on the sheath when the sheath is pulled is greatly reduced, particularly the pinching force of the sheath in the radial direction is reduced, so that the sheath is easier to be stripped, and the local thick sheath wall formed by the annular bulge can be ensured in a natural state, enough wrapping force is provided between the lead and the sheath, and the wrapping protection effect on the lead is improved. By the design, even compared with the wiring of the existing common terminal structure, at least the connecting joint in the tapping box can be quickly and easily stripped when the insulating layer is stripped, the connecting speed can be accelerated to a certain extent, and the number of the annular structures can also visually represent the length of the intercepted insulating layer.

Drawings

Fig. 1 is a schematic structural diagram of one embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of a first inner cable according to an embodiment of the present invention.

Fig. 3 is a longitudinal sectional view of a second inner cable according to an embodiment of the present invention.

Fig. 4 is a schematic view of the inner cable shown in fig. 3 with the sheath stripped.

Fig. 5 is a longitudinal sectional view of a third inner cable.

Element number description: the cable comprises a lead 1, a sheath 2, an outer sleeve 3, an annular bulge 201, an annular cavity 202, a box body 4, a perforation 401, a rib plate 402, a central terminal 5 and an inner cable a.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

The invention will be further explained with reference to the following figures and examples:

the cable distribution box described in this embodiment is shown in fig. 1, and includes a detachable box body 4, specifically, the box body 4 is split into two halves, a rib plate 402 is respectively disposed around each half box body 4, bolt holes are disposed on the rib plate 402, and the respective bolt holes are arranged opposite to each other when the two half box bodies 4 are split, so as to assemble the box body 4. A conductive central terminal 5 is fixed in the box body 4, and a plurality of sections of internal cables a are connected to the central terminal 5. The box 4 also has a plurality of through holes 401 for external cables to pass through. Specifically, the internal cable a in this embodiment has a special structure, as shown in fig. 2, which specifically includes: including wire 1 and parcel sheath 2

outside wire

1, 2 outer walls of sheath are the structure that a plurality of annular protrusion 201 interval were arranged to make 2 outer walls of sheath be bellows outer wall column structure, the inner wall of sheath 2 closely meets with wire 1 of inner cable a. The sheath 2 may be made of PE, PVC or other materials. If necessary, a two-layer sheath and a three-layer sheath can be added during manufacturing to increase the outer diameter of the cable and improve the insulation protection.

The cable distribution box has simple structure, changes the traditional smooth round tube structure of the sheath 2, makes the sheath 2 into the structure of the corrugated tube outer wall, in the process of stripping the sheath 2 of the cable, after a section of the sheath 2 is circularly cut according to the length of 30-70mm, when the cut sheath section is held by hands and pulled outwards along the length direction of the lead 1, because of the structure of the annular bulge 201, an acting point can be provided, so that an operator has more sufficient force to exert on the cut sheath segment to pull outwards, this considerably reduces the pinching force on the jacket 2 itself when drawing the jacket 2, in particular on the jacket 2 in the radial direction, so that the sheath 2 is easier to be stripped, and the local thick wall of the sheath 2 formed by the annular bulge 201 can ensure that the wrapping force between the lead 1 and the sheath 2 is improved under the natural state.

As a specific implementation detail, as shown in FIG. 2, the interval D between the wave troughs of two adjacent annular protrusions 201 can be set to be 5-10mm, so that whether the length of the stripped sheath 2 is 30-70mm or other required length range can be judged by the number of the annular protrusions 201 and the cutting position on one annular protrusion 201, and the stripped length is more accurate and intuitive.

In order to further facilitate the stripping of the sheath 2, referring to fig. 3, the present embodiment may also be implemented by recessing a plurality of spaced annular cavities 202 on the inner wall of the sheath 2 along the radial direction thereof, and the spacing between two adjacent annular cavities 202 is not less than half of the length of the annular cavities 202 along the axial direction of the sheath 2, so as to ensure that the wrapping force after the lead wire 1 contacts the inner wall of the sheath 2 is sufficient, but may also be implemented by changing the material of the sheath 2 and the thickness of the sheath 2. The annular cavity 202 in this embodiment is mainly used to increase the protrusion degree of the sheath 2 in the length direction of the conductor 1 (as shown in fig. 4) when the cut sheath segment is pulled outward by an external force F after the sheath 2 is cut, so as to reduce the engaging force between the sheath 2 and the conductor 1, thereby quickly stripping and stripping the sheath 2. In particular, on the basis of this, as shown in fig. 5, the sheath 2 may be further wrapped with an outer sleeve 3 having a tightening force on the outer portion thereof, so that in a natural state, the outer sleeve 3 radially presses the sheath 2, so that the cavity wall of the annular cavity 202 contacts the lead 1 as much as possible, thereby further improving the tightening force between the lead 1 and the sheath 2 in the natural state, and it is required that in the design, when the length of the insulating layer is cut, the length of the outer sleeve is only estimated to be lengthened so as to expose the inner sheath 2, so as to further more accurately cut the sheath 2. When the outer sleeve needs to be stripped, the outer sleeve 3 is cut off firstly, then the outer sleeve 3 is pulled out outwards, due to the action of the annular protrusion 201 on the sheath 2, the outer sleeve 3 can be pulled out from the sheath 2 in advance relatively easily, after the outer sleeve is pulled out, the sheath 2 is released, the annular concave cavity 202 of the outer sleeve gradually recovers a certain concavity, at the moment, the contact area between the inner wall of the sheath 2 and the lead 1 is reduced, the wrapping force is reduced, the cut sheath 2 can be conveniently and rapidly stripped from the lead 1, the inner cable a is tightly wrapped on the lead 1 in a natural state, the sheath 2 can be rapidly and conveniently stripped in processing, two purposes are achieved, and the special cable structure is ingenious and effective, and can be popularized to the field of the existing cables.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a cable distribution box, includes the box body of removable branch, its characterized in that: a conductive central terminal is fixed in the box body, and a plurality of sections of internal cables are connected to the central terminal; the box body is also provided with a plurality of through holes for external cables to extend into;

2. The cable distribution box of claim 1, wherein: the interval between the wave troughs of two adjacent annular bulges is 5-10 mm.

3. The cable distribution box of claim 1, wherein: the inner wall of the sheath is recessed into a plurality of annular cavities at intervals along the radial direction of the inner wall, and the interval between two adjacent annular cavities is not less than half of the length of the annular cavities in the axial direction of the sheath.

4. The cable distribution box of claim 3, wherein: and the outer part of the sheath is also wrapped with an outer sleeve with a tightening force.

5. The cable distribution box of claim 1, wherein: the central terminal is disc-shaped, the central terminal is erected in the center of the box body in a hanging mode through an insulating support rod fixed on the inner wall of the box body, the internal cables are connected to the circumferential surface of the central terminal, all the internal cables are in a circular array with the circle center of the central terminal as the center, and the free end of each internal cable is opposite to one through hole.

6. The cable distribution box of claim 1, wherein: the box body is in a two-half splicing type, a rib plate is arranged on the periphery of each half box body, bolt holes are formed in the rib plate, and the respective bolt holes are arranged in a one-to-one opposite mode when the two half box bodies are spliced.