Quick connect and disconnect cable junction box

Patent metadata

Field	Value
Publication number	US-9997897-B2
Application number	US-201615524928-A
Country	US
Kind code	B2
Filing date	Jul 21, 2016
Priority date	Aug 13, 2015
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

The present disclosure provides a quick connect and disconnect cable junction box, including: a box body, insulators, copper busbars, connection wires, T-shaped cable terminals, linear adapters, and an insulation spacer. The insulators, the copper busbars, the connection wires, and the T-shaped cable terminals are positioned inside the box body. The linear adapter includes a conductive rod, an insulation layer, a quick engagement connector, and a housing. One end of each of three linear adapters is electrically connected to the T-shaped cable terminal inside the box body. The three linear adapters, three T-shaped cable terminals, three connection wires, and three copper busbars form a three-phase electrical path. During operation, the three copper busbars are correspondingly connected to three phase lines of an incoming cable of a ring main unit; and the three linear adapters are engaged with quick connectors of three bypass cable connectors via the quick engagement connectors thereof.

First claim

What is claimed is:

1. A quick connect and disconnect square junction box assembly comprising:
a back wall,
a plurality of side walls extending from the back wall and defining a front opening,
a plurality of insulators, wherein said insulators are attached to the back wall,
a plurality of T-shaped cable terminals;
a plurality of busbars, wherein each of the busbars is attached to one of the insulators, and each of the busbars includes a front-wire connecting terminal to connect with an incoming cable, and a rear wire-connecting terminal to connect with one of the T-shaped cable terminals,
a plurality of linear adapters, wherein the linear adapters and the T-shaped cable terminals are attached to the back wall, each of the busbars is connected to one of the T-shape terminals, and each of the linear adapters is connected to one of the busbars through one of a plurality of wires,
an openable door attached to side walls of the square box, and
heat dissipation windows attached to a front of the side walls;
wherein each of the linear adapters includes a conductive rod, an insulation layer, a quick engagement connector, and a housing;
the conductive rod includes a front cylinder body and a rear cylinder body, and a diameter of the front cylinder body of the conductive rod is greater than a diameter of the rear cylinder body; a thread hole that concaves inwardly is disposed in the front cylinder body of the conductive rod along an axial direction; threads are fixedly disposed in the thread hole of the conductive rod; a bypass cable plug hole that concaves inwardly is disposed in the rear cylinder body of the conductive rod along the axial direction, an elastic fastening ring is coupled to the bypass cable plug hole;
the insulation layer covers an outside surface of the conductive rod, the insulation layer includes, sequentially from front to rear of the insulation layer, a first truncated cone portion, a second truncated cone portion, a first cylinder portion, a second cylinder portion, and a third cylinder portion, an outer diameter of the first truncated cone portion is less than an outer diameter of the second truncated cone portion, an outer diameter of the first cylinder portion is greater than an outer diameter of the second cylinder portion, and the outer diameter of the second cylinder portion is greater than an outer diameter of the third cylinder portion;
the quick engagement connector is fitted and connected at a rear end of the second truncated cone portion of the insulation layer, and a rear portion of the third cylinder portion of the insulation layer passes through the quick engagement connector and extends outwardly; the housing is fixedly installed on an outer surface of the second truncated cone portion of the insulation layer and is fixedly connected to a front end of the quick engagement connector;
the quick engagement connector of the linear adapter is located outside the back wall of the square box; each of the linear adapters is fixedly connected, through the threads in the conductive rod of the linear adapter, to a corresponding bolt of one of the T-shaped cable terminals; an upper end of each of the T-shaped cable terminals is, using one of the wires, electrically connected to the corresponding rear wire-connecting terminal of one of the busbars;
an insulation spacer is fixedly disposed inside the box assembly and is located in front of the T-shaped cable terminals and the wires; and
during operation, the front wire-connecting terminals of the busbars are respectively connected to corresponding power lines of the incoming cable of a ring main unit; the linear adapters are connected, respectively through the quick engagement connectors, with quick connectors of bypass cables.

2. The quick connect and disconnect square junction box assembly according to claim 1 , wherein external dimensions of the square box are 680 millimeter in length, 535 millimeter in width, and 1150 millimeter in height.

3. The quick connect and disconnect square junction box assembly according to claim 1 , wherein the T-shaped cable terminals are standard bolt-fastening type T-shaped cable terminals.

4. The quick connect and disconnect square junction box assembly according to claim 1 , wherein:
the quick engagement connectors of the linear adapters are standard quick engagement connectors;
a front end of the quick engagement connector is provided with a mounting fixation ring;
the housing of each of the linear adapters is formed by two vertically symmetrical parts;
an outer shape of the housing of each of the linear adapters after installation is square;
an inner shape of the housing of each of the linear adapters is compatible with an outer shape of the second truncated cone portion of the insulation layer;
a rear end inside the housing of each of the linear adapters is provided with a fixation ring socket groove; and
the quick engagement connector is fixedly connected to the housing through a compatible coupling between the mounting fixation ring and the fixation ring socket groove.

5. The quick connect and disconnect square junction box assembly according to claim 1 , wherein a material of the insulation layers of the linear adapters are EPDM (Ethylene Propylene Diene Monomers) rubber material having a compressive stress of 8-12 kilogram per centimeter square.

Assignees

• State Grid Chang Zhou Current Supply Company Of Jiangsu Electric Power Company
• State Grid Jiangsu Electric Power Co
• State Grid Corp China

Inventors

• Gong Bing
• Qin Yongming
• He Jianjun
• Xu Zhen

Classifications

• H02G1/02 Primary

  for overhead lines or cables · CPC title

• H01R25/00

  Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits (supported only by co-operation with a counterpart H01R31/00; with a holder adapted for supporting apparatus to which its counterpart is attached H01R33/88) · CPC title

• H02G15/10

  protected by boxes, e.g. by distribution, connection or junction boxes · CPC title

• H01R13/74

  Means for mounting coupling parts in openings of a panel · CPC title

• H01R13/622

  Screw-ring or screw-casing (H01R13/623 takes precedence) · CPC title