CN211183368U

CN211183368U - T type elbow type cable joint of full waterproof formula

Info

Publication number: CN211183368U
Application number: CN201922462678.2U
Authority: CN
Inventors: 陈玉宝; 范红海
Original assignee: Nanjing Ruiduo Electric Co ltd
Current assignee: Nanjing Ruiduo Electric Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-04
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a full waterproof T-shaped elbow cable joint, which comprises a straight-through conductive piece and a branched conductive piece, wherein the branched conductive piece is communicated with the middle of the straight-through conductive piece, a connecting screw rod is arranged in the straight-through conductive piece, a crimping terminal is arranged in the branched conductive piece, the connecting screw rod is in threaded connection with the crimping terminal, and an inner semi-conductive layer is arranged on the crimping terminal; a first protective layer and a second protective layer are sequentially arranged on the forked conductive piece and the straight-through conductive piece from inside to outside. The utility model can protect the joint well inside or outside through the first protective layer and the second protective layer, thereby prolonging the service life of the joint; the waterproof layer through setting up has prevented the cable infiltration, has improved the heat resistance of cable through the heat-resistant layer that sets up to the cross arrangement of heat-resistant layer and waterproof layer, the intraformational steam of waterproof can dispel the heat to the heat-resistant layer, thereby has improved the thermal diffusivity of cable greatly.

Description

T type elbow type cable joint of full waterproof formula

Technical Field

The utility model relates to an electric parts field, in particular to T type elbow type cable joint of full waterproof formula.

Background

The wire and cable is used for transmitting electric (magnetic) energy, information and wire products for realizing electromagnetic energy conversion. A wire cable in a broad sense, also referred to as a cable for short, refers to an insulated cable, which can be defined as: an aggregate consisting of; one or more insulated wire cores, and their respective possible coatings, total protective layers and outer jackets, the cable may also have additional conductors without insulation; the T-shaped cable joint is frequently used when cables are connected, the existing T-shaped cable joint has certain defects when in use, firstly, the service life of the joint is short, and then the heat dissipation performance of the cable joint is poor.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a fully waterproof T-shaped elbow cable joint, which can effectively solve the problems of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a full waterproof T-shaped elbow cable joint comprises a straight-through conductive piece and a branched conductive piece, wherein the branched conductive piece is communicated with the middle of the straight-through conductive piece, a connecting screw rod is arranged in the straight-through conductive piece, a crimping terminal is arranged in the branched conductive piece, the connecting screw rod is in threaded connection with the crimping terminal, and an inner semi-conductive layer is arranged on the crimping terminal; a first protective layer and a second protective layer are sequentially arranged on the forked conductive piece and the straight-through conductive piece from inside to outside; four layers are arranged in the first protective layer, wherein two layers on the inner side are insulating layers, and two layers on the outer side are heat-conducting silica gel layers; five layers are arranged in the second protective layer, wherein a first heat-resistant layer, a first waterproof layer, a second heat-resistant layer, a second waterproof layer and an outer semi-conducting layer are sequentially arranged from inside to outside.

Preferably, the end part of the through conductive piece, where the cable is not connected, may be further provided with a semiconductor cap.

Preferably, an insulating rubber is arranged in the insulating layer.

Preferably, the first heat-resistant layer and the second heat-resistant layer are arranged in the same manner and are made of heat-resistant rubber.

Preferably, the first waterproof layer and the second waterproof layer are arranged in the same manner and are both waterproof breathable films.

Preferably, the lower end of the branched conductive piece is provided with a grounding eye.

Preferably, the inner semiconductive layer and the outer semiconductive layer are both internally provided with EPDM conductive rubber.

Preferably, the lower end part of the branched conductive piece is provided with a stress cone semi-conductive layer; and a metal sheath is arranged in the stress cone semi-conducting layer.

Compared with the prior art, the utility model has the following beneficial effects;

the joint can be well protected inside or outside through the first protective layer and the second protective layer, so that the service life of the joint is prolonged;

the insulating property of the cable can be well improved through the arranged insulating rubber sheet, so that the danger is greatly reduced; and two layers are arranged, so that the insulation thickness is increased;

through the arranged heat-conducting silica gel layer, the heat-conducting silica gel layer is a heat-conducting silica gel pad which can play a role of a heat transfer medium and cover the contact surface of the insulating layer, so that the heat of the cable is continuously conducted to the second protective layer, and the second protective layer is communicated with the atmosphere, so that the heat can be well dissipated;

the waterproof layer through setting up has prevented the cable infiltration, has improved the heat resistance of cable through the heat-resistant layer that sets up to the cross arrangement of heat-resistant layer and waterproof layer, the intraformational steam of waterproof can dispel the heat to the heat-resistant layer, thereby has improved the thermal diffusivity of cable greatly.

Drawings

Fig. 1 is a schematic view of the overall structure of a fully waterproof T-shaped elbow cable joint according to the present invention;

fig. 2 is a cross-sectional view of a fully waterproof T-shaped elbow cable joint according to the present invention;

fig. 3 is a sectional view of a second protection layer of a fully waterproof T-shaped elbow cable joint according to the present invention;

fig. 4 is a cross-sectional view of a protective layer of a fully waterproof T-shaped elbow cable joint of the present invention.

In the figure: 1. a direct-connection conductive piece; 2. a bifurcated conductive member; 3. a semiconductor sealing cap; 4. connecting a screw rod; 5. a second protective layer; 6. a first protective layer; 7. a grounding eye; 8. a stress cone semi-conductive layer; 9. a first heat-resistant layer; 10. a first waterproof layer; 11. a second heat-resistant layer; 12. a second waterproof layer; 13. an insulating layer; 14. a heat conductive silica gel layer; 15. an outer semiconducting layer.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a fully waterproof T-shaped elbow cable joint includes a straight-through conductive member 1 and a branched conductive member 2, the branched conductive member 2 is communicated with the middle of the straight-through conductive member 1, a connection screw 4 is arranged in the straight-through conductive member 1, and a crimping terminal is arranged in the branched conductive member 2; the cable passes through the straight-through conductive piece 1 and then is branched through the branched conductive piece 2, the crimping terminal is used for connecting the branched cable, and a copper crimping terminal or a copper-aluminum crimping terminal is selected according to the requirement of the conductive rod; the connecting screw rod 4 is connected with the crimping terminal in a threaded manner. An inner semi-conducting layer is arranged on the crimping terminal; the inner semi-conducting layer is internally provided with EPDM conductive rubber, namely ethylene propylene diene monomer rubber which is a copolymer of ethylene, propylene and a small amount of non-conjugated diene and is one of ethylene propylene rubbers, and the main chain of the EPDM conductive rubber is composed of chemically stable saturated hydrocarbon and only contains unsaturated double bonds in the side chain, so that the EPDM conductive rubber has excellent electrical insulation performance, heat resistance and ozone resistance; the EPDM conductive rubber enhances the heat resistance of the cable.

A first protective layer 6 and a second protective layer 5 are sequentially arranged on the forked conductive piece 2 and the straight-through conductive piece 1 from inside to outside; through the protection layer 6 and the second protection layer 5, the connector can be well protected inside or outside, and the service life of the connector is prolonged.

Four layers are arranged in the first protective layer 6, wherein two layers on the inner side are insulating layers 13; an insulating rubber sheet is arranged in the insulating layer 13; the insulating property of the cable can be well improved through the arranged insulating rubber sheet, so that the danger is greatly reduced; and two layers are arranged, so that the insulation thickness is increased.

The outer two layers are heat-conducting silica gel layers 14; the heat-conducting silica gel layer 14 is a heat-conducting silica gel pad, and the heat-conducting silica gel pad can play a role of a heat transfer medium and covers the contact surface of the insulating layer 13, so that heat of the cable is continuously conducted to the second protective layer 5, the second protective layer 5 is communicated with the atmosphere, and heat dissipation can be well achieved.

Five layers are arranged in the second protective layer 5, wherein a first heat-resistant layer 9, a first waterproof layer 10, a second heat-resistant layer 11, a second waterproof layer 12 and an outer semi-conducting layer 15 are arranged from inside to outside in sequence. The first heat-resistant layer 9 and the second heat-resistant layer 11 are provided with the same inner arrangement and are both made of heat-resistant rubber. The first waterproof layer 10 and the second waterproof layer 12 are arranged in the same way and are both waterproof breathable films; principle of waterproof ventilated membrane: under the state of water vapor, water particles are very fine, and can smoothly permeate into the capillary to the other side according to the principle of capillary motion, so that the vapor permeation phenomenon is generated. When water vapor is condensed into water drops, the particles become bigger, and water molecules can not smoothly separate from the water drops and permeate to the other side under the action of the surface tension of the water drops, so that the water permeation is prevented, and the vapor permeable membrane has a waterproof function; and the waterproof breathable film is composed of three layers: PP spunbonded nonwoven, PE macromolecule breathable film and PP spunbonded nonwoven. The spun-bonded non-woven fabric mainly has the functions of enhancing tension and hydrostatic pressure and protecting the middle layer (breathable film), and the real ventilation is mainly realized by the middle layer PE high-molecular breathable film; the waterproof layer has prevented the cable infiltration, and the heat resistance layer has improved the heat resistance of cable, and through the cross arrangement of heat resistance layer and waterproof layer, the intraformational steam of waterproof can dispel the heat to the heat resistance layer to the thermal diffusivity of cable has been improved greatly.

The end part of the through conductive piece 1, which is not connected with the cable, can be also provided with a semiconductor sealing cap 3; for semiconductor insulation material in the semiconductor sealing cap 3, through the semiconductor sealing cap 3 that sets up, the condition of intaking and electric leakage can be prevented to the one end that the cable that does not appear.

The lower end of the branched conductive member 2 is provided with a grounding eye 7.

The outermost layer of the second protective layer 5 is an outer semi-conducting layer 15; the outer semiconductive layer 15 is internally provided with EPDM conductive rubber.

The lower end part of the forked conductive piece 2 is provided with a stress cone semi-conductive layer 8; a metal sheath is arranged in the stress cone semi-conducting layer 8; through the stress cone semi-conducting layer 8, the bending degree of the cable branch is increased, and the outer insulating sleeve is not damaged, so that the service life is shortened.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A T type elbow cable joint of full waterproof formula, is including leading directly electrically conductive piece (1) and branching electrically conductive piece (2), its characterized in that: the forked conductive piece (2) is communicated with the middle of the straight-through conductive piece (1), a connecting screw rod (4) is arranged in the straight-through conductive piece (1), a crimping terminal is arranged in the forked conductive piece (2), the connecting screw rod (4) is in threaded connection with the crimping terminal, and an inner semi-conductive layer is arranged on the crimping terminal; a first protective layer (6) and a second protective layer (5) are sequentially arranged on the forked conductive piece (2) and the straight-through conductive piece (1) from inside to outside; four layers are arranged in the first protective layer (6), wherein two layers on the inner side are insulating layers (13), and two layers on the outer side are heat-conducting silica gel layers (14); five layers are arranged in the second protective layer (5), wherein a first heat-resistant layer (9), a first waterproof layer (10), a second heat-resistant layer (11), a second waterproof layer (12) and an outer semi-conducting layer (15) are arranged from inside to outside in sequence.

2. A fully watertight T-elbow cable joint according to claim 1, wherein: the end part of the through conductive piece (1) where the cable is not connected can be further provided with a semiconductor sealing cap (3).

3. A fully watertight T-elbow cable joint according to claim 1, wherein: and an insulating rubber sheet is arranged in the insulating layer (13).

4. A fully watertight T-elbow cable joint according to claim 1, wherein: the first heat-resistant layer (9) and the second heat-resistant layer (11) are arranged in the same way and are made of heat-resistant rubber.

5. A fully watertight T-elbow cable joint according to claim 1, wherein: the first waterproof layer (10) and the second waterproof layer (12) are arranged in the same way and are both waterproof and breathable films.

6. A fully watertight T-elbow cable joint according to claim 1, wherein: the lower end of the forked conductive piece (2) is provided with a grounding eye (7).

7. A fully watertight T-elbow cable joint according to claim 1, wherein: the inner and outer semiconductive layers (15) are each made of EPDM conductive rubber.

8. A fully watertight T-elbow cable joint according to claim 1, wherein: the lower end part of the forked conductive piece (2) is provided with a stress cone semi-conductive layer (8); a metal sheath is arranged in the stress cone semi-conducting layer (8).