CN2479670Y

CN2479670Y - Low-voltage power cable junction box

Info

Publication number: CN2479670Y
Application number: CN 01212804
Authority: CN
Inventors: 钱幼珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-19
Filing date: 2001-03-19
Publication date: 2002-02-27
Anticipated expiration: 2011-03-19

Abstract

Disclosed is a low-voltage power cable adapter junction box, the box body of which comprises two parts which can be folded together. The two ends of the box body is provided with an inlet pipe opening and an outlet pipe opening, the box body is provided inside with the adaptor junction box which comprises two insulating plates with holes and a metal conductor assembly, wherein the ends of the metal conductor are respectively inserted into the installation holes of the two insulating plates and the parts of the metal conductor exposed out of the installation holes form into an inlet interface and an outlet interface. The metal conductor is a metal array, the end of which is provided with through-holes. The utility model is easy to manufacture, convenient to assemble and construct, good in osculation properties and particularly suitable to be placed underground, and the utility model is tightened with the connecting terminals of inlet cables and outlet cables by bolts.

Description

The lv power cable junction box

The utility model provides a kind of lv power cable junction box, uses the device of cable branch to user's branch family especially for the underground power transmission line that buries.

Often relate to being connected of bus cable and many branch cables in the low-voltage power supply system, the low-voltage cable junction box is a main device of realizing above-mentioned connection, existing low-voltage cable junction box is used on the ground mostly, usually the house lead in junction box all adopts the mode that skin hangs, facts have proved, there is the inconvenience installation in this class junction box and influences building shortcoming attractive in appearance, the turnover line cap of deconcentrator is arranged unreasonable in the junction box simultaneously, cause four heart yearn length of connected every cable to differ, make the field connection workload bigger.Such junction box can not seal fully, so can not be positioned over underground.For this reason, the applicant once proposed " burying formula lv power cable junction box " utility application, and this junction box comprises box body, deconcentrator, binding post, box body is made of two parts, and the junction is to be convenient to structure that both sealings are closed up between two parts box body.There are the inlet wire mouth of pipe and the outlet mouth of pipe in the box body two ends, the number of the inlet wire mouth of pipe and the outlet mouth of pipe is 1:N, N is more than or equal to 2, turnover spool mouth is provided with the airtight and watertight padding chamber, adopts the sealing of filler compressing method, and deconcentrator is housed in the box body, deconcentrator is one group and has an inlet wire interface and a plurality of conductor that goes out line interface is contained on the insulation framework, the inlet wire interface goes out line interface towards the outlet mouth of pipe towards the inlet wire mouth of pipe, and the turnover line terminals is fastened on line interface respectively.The above-mentioned formula of burying underground lv power cable junction box, it is the conical surface into and out of the line interface inwall, between this conical surface and binding post, be added with the Elastic Circular conical ring of band opening, binding post one end inserts the Elastic Circular conical ring, there is screw thread to match into and out of the line interface outer wall with clamp nut, the favorable conductive contact so that binding post is combined closely with the turnover line interface, was realized in compressing Elastic Circular conical ring end when nut screwed.Above-mentioned binding post one end has blind hole, and the other end is a barred body, and barred body is and the fastening usefulness of turnover line interface that blind hole is the cable core patchhole.The weak point of this junction box is to pass in and out line interface needs special processing, has limited the conductor that is adopted simultaneously and should adopt cylindrical shape, and consumptive material is more, requires the also processing especially of binding post of cooperation with it, has increased manufacturing cost.

The lv power cable junction box that the utility model provides, purpose are to simplify processing by changing conductor shape and turnover line interface structure, reduce cost, and provide multiple seal means simultaneously, so that adapt to the underground mounting means of burying underground.

Lv power cable junction box of the present utility model, box body is made of the two parts that can closely close up, there is turnover spool mouth at the box body two ends, its quantity is more than or equal to 3, deconcentrator is housed in the box body, deconcentrator comprises the insulation board and the metallic conductor of two band installing holes, two insulation board positions in box body are parallel, the insulation board plane is vertical with turnover spool mouth direction, the metallic conductor termination is inserted the installing hole of two insulation boards respectively, exceed part and constitute the turnover line interface, turnover line interface quantity and position are all corresponding with the enterprising outlet mouth of pipe of described box body, it is characterized in that: described metallic conductor is made of metal row, and metal row termination constitutes turnover line interface position and has through hole.

Described lv power cable junction box, it is further characterized in that described two parts box body joint portion is provided with sealing ring and clamping screw, can there be cylindrical protrusion at the place around box body two ends turnover spool mouth, and the internal diameter of cylindrical protrusion can be more than or equal to turnover spool mouth diameter.

The utility model is rational in infrastructure, volume is little, especially deconcentrator is enterprising goes out line interface and metallic conductor constitutes by simple metal row, and processing is simple, and the turnover line interface adopts bolt directly to be fastenedly connected with the turnover cable connecting terminal, conduct electricity very well, easy for installation, the visual concrete condition of turnover spool mouth adopts different sealing mode, easy construction, good airproof performance is particularly suitable for the underground placement of burying underground.

Fig. 1 is the utility model general structure schematic diagram.

Fig. 2 is the utility model deconcentrator metallic conductor structural representation.

Fig. 3 is a metallic conductor left view shown in Figure 2.

Fig. 4 is turnover cable connecting terminal schematic diagram.

Fig. 5 is a deconcentrator insulation board schematic diagram.

Among the figure: 1-1,1-2 is box bodys, and 1-3 is sealing rings, the 2nd, and fastening bolt, the 3rd, turnover spool mouth, the 4th, the metallic conductor in the deconcentrator, 4-1 is the turnover line interface on the conductor, 4-2 is clamp nut screw rods, the 5th, insulation board, 5-1 is the installing hole on the insulation board, the 6th, the turnover line terminals.

The cablehead box body is a vitals of realizing that conductive component is isolated from the outside in the box, and box body is made up of two parts, lays in order to conductive component inside.The joint portion of two box bodys is provided with sealing ring 1-3, and clamping screw 2 is tightly connected two box bodys, and the box body two ends are respectively equipped with cable turnover spool mouth 3, can directly seal the slit between turnover cable and the turnover spool mouth; When the internal diameter of turnover spool mouth place cylindrical protrusion during greater than turnover spool mouth diameter, form turnover spool mouth airtight and watertight padding chamber, airtight and watertight padding is compressed by compacting part; When the internal diameter that passes in and out spool mouth place cylindrical protrusion equals to pass in and out linear diameter, when promptly not having the airtight and watertight padding chamber, seal at cable and turnover spool mouth contact portion overcoat heat-shrink tube.

Deconcentrator is installed in the box body, and deconcentrator has an inlet wire interface to be connected with a plurality of metallic conductor 4 usefulness insulation boards that go out the mutual line of line interface by many groups and supports, with insulate between the assurance group and housing between insulation, Fig. 1 provides is three schematic diagrames that go out structure into.

Cable bus of deconcentrator realization is connected with two or two above cable branch lines, i.e. " one-in-and-two-out " or " one advances to have more ", be connected by binding post 6 transition between the turnover line interface in cable conductor heart yearn and the deconcentrator, cable core inserts in the binding post hole, connects with the general mode of colding pressing.The binding post other end and deconcentrator be enterprising to be gone out line interface and adopts bolted to be connected.

Claims

1. lv power cable junction box, box body is made of the two parts that can closely close up, there is turnover spool mouth at the box body two ends, its quantity is more than or equal to 3, deconcentrator is housed in the box body, deconcentrator comprises the insulation board and the metallic conductor of two band installing holes, two insulation board positions in box body are parallel, the insulation board plane is vertical with turnover spool mouth direction, the metallic conductor termination is inserted the installing hole of two insulation boards respectively, exceed part and constitute the turnover line interface, turnover line interface quantity and position are all corresponding with the enterprising outlet mouth of pipe of described box body, it is characterized in that: described metallic conductor is made of metal row, and metal row termination constitutes turnover line interface position and has through hole.

2. lv power cable junction box as claimed in claim 1, it is characterized in that described two parts box body joint portion is provided with sealing ring and clamping screw, there is cylindrical protrusion at the place around box body two ends turnover spool mouth, and the internal diameter of cylindrical protrusion can be more than or equal to turnover spool mouth diameter.