CN2779691Y - Electric cable distribution box - Google Patents

Abstract

The utility model relates to a cable distribution box, which is composed of the following parts: after the upper part and the lower part of the flame-retardant insulating shell are clamped, a plurality of cavities are formed in it; The U-shaped main conductor; the U-shaped groove of the main conductor is provided with a transition block; the transition block is provided with a locking block; the main conductor is provided with a connecting plate for closing the U-shaped opening; one end of several compression studs Pass through the connecting pressing plate and press on the locking pressing block; there are several through holes for the main wire and the branch wire to pass through on the insulating shell. The utility model changes the limitation of the traditional cable in use, expands the application range of the cable, and enables the power supply system to adopt the connection between the main wire and the branch wire from the single-core cable to the multi-core cable, which is convenient to use, safe and reliable. It can meet the needs of different power supply systems in different usage occasions.

Description

Cable Distribution Box

1. Technical field: The utility model relates to a junction box, in particular to a junction box used for cable joint connection in a power supply system.

2. Background technology: At present, the power supply of high-rise buildings and buildings with relatively large interception flow is mostly connected by busway. The busway is connected in sections, and there are many connection points, and there are many hidden dangers of accidents. Among them, there is a connection point If there is a fault, it will cause a power transmission accident, and the busway is expensive, takes up a lot of space, is complicated to install, and has many accessories, and the prefabricated branch cable cannot make a branch joint with a relatively large interception flow, and the multi-core cable joint is even more difficult to produce.

3. Contents of the invention:

1. Purpose of the invention: This utility model provides a cable junction box, the purpose of which is to solve the problems of traditional busway connection with many connection points, complicated installation, high failure rate, high cost, large occupied space and prefabricated branch cables. The problem that branch joints of large-capacity multi-core cables cannot be produced.

2. Technical solution: the utility model is realized through the following technical solutions:

A cable junction box, characterized in that: after the upper and lower parts of the flame-retardant insulating shell are clamped, several cavities are formed in it; a U-shaped main conductor for placing the main conductor and branch conductors is arranged in the cavity; the main conductor There is a transitional pressing block in the U-shaped groove; a locking pressing block is provided on the transitional pressing block; a connecting pressing plate for closing the U-shaped opening is arranged on the main conductor; one end of several pressing studs passes through the connecting pressing plate and is pressed on the lock On the pressing block; the insulating shell is provided with several through holes for the main wire and the branch wire to pass through.

A seal made of flame retardant material is provided on the through hole.

The inner surface of the U-shaped groove of the main conductor is plated with a tin layer structure.

The contact surfaces of the transitional pressing block and the main wire and the branch wire are plated with a tin layer structure.

The contact surface of the locking pressing block and the branch wire is plated with a tin layer structure.

The main conductor is fixedly arranged in the cavity through the bottom corner studs at the lower part of the insulating case.

There are three compression studs on each main conductor.

3. Advantages and effects: Through the implementation of the technical solution of the utility model, it can well solve the problem that after the cables of the traditional power supply system are connected and installed through the bus duct, many joints lead to a high failure rate, and the bus duct not only has high cost but also takes up a large space. Complicated, which limits the use of cables in a wider range. The utility model changes the limitation of the traditional cable in use, expands the application range of the cable, and enables the power supply system to adopt the connection between the main wire and the branch wire from the single-core cable to the multi-core cable, which is convenient to use, safe and reliable. . The utility model can be applied to various occasions, it can be installed on the wall of the shaft, it can also be installed on the ladder type bridge frame, it can also be installed in the groove type bridge frame, it can be installed horizontally or vertically, and it can meet different power supplies in different use occasions System needs.

Four, accompanying drawing description: Accompanying drawing 1 is a structural representation of the utility model;

Accompanying drawing 2 is a top view of the utility model.

Five, the specific embodiment: the utility model is realized with the following technical documents:

In the figure 1. Main conductor; 2. Connecting pressure plate; 3. Locking press block; 4. Transition press block; 5. Main lead; 6. Branch lead; 7. Lower part of the insulating shell; , Seals; 10, high-strength compression studs; 11, tin layer structure.

As shown in accompanying drawing 1 and accompanying drawing 2, the insulating housing made of the flame retardant material of the present invention is composed of an upper part 8 and a lower part 7, and the four corners of the upper part 8 of the insulating housing are provided with four and fastened after being clamped with the lower part. After connecting the fixed bolts, the upper part 8 and the lower part 7 of the insulating shell are fastened and engaged, five cavities arranged at intervals are formed in the cavity, and a U-shaped main conductor 1 for placing the main wire 5 and the branch wire 6 is arranged in the cavity , in order to ensure the conductivity, the main conductor 1 is made of a red copper plate with good conductivity, which is formed by pressing a mold, and then a tin-plated layer structure 11 is added to the inner surface of the U-shaped groove. The main conductor 1 is set in the cavity of the lower part of the insulating shell The bottom corner studs of the main conductor 1 are fixedly installed in the cavity, and the joint of the main conductor 5 or the part used for branching is placed through the through hole set on the insulating shell corresponding to the U-shaped groove of the internal main conductor 1, and then set in the main conductor 1. The bottom of the U-shaped groove of the body 1, due to the arc-shaped contact between the two, increases the contact area and ensures electrical conductivity. In the U-shaped groove, a transitional pressing block 4 is provided on the main wire 5, and the transitional pressing block 4 is a copper plate. After being pressed and formed by the mold, the side in contact with the main wire 5 is provided with an arc-shaped groove compatible with the main wire 5. In order to better ensure electrical conductivity, the surface of the arc-shaped groove is plated with a tin layer structure, and the other side A branch arc-shaped groove compatible with the branch wire 6 is provided, and the surface of the branch arc-shaped groove is plated with a tin layer structure. In the groove, there is a locking pressing block 3 on the branch wire 6, and the arc groove of the locking pressing block 3 is in contact with the branch wire 6, and the surface of the arc groove of the locking pressing block 3 is also plated with a tin layer structure , the U-shaped notch of the main conductor 1 is provided with a connecting pressure plate 2 for closing, and one end of the high-strength compression stud 10 passes through the connection pressure plate 2 and is pressed on the locking pressure block 3, when the high-strength compression stud is tightened At 10 o'clock, it compresses and locks the briquetting block 3, and simultaneously compresses the branch wire 6 and the main wire 5, so that the branch wire 6 is connected to the main wire 5 through the transition briquetting block 4 and the main conductor 1. 1 is provided with three high-strength pressure compression studs 10, so the main wire 5 and the branch wire 6 are relatively fixed, and the phenomenon of poor contact will not occur. Install the flame retardant sealing member 9 on the through hole of the main lead wire 5 and the branch lead wire 6 on the insulating shell, which plays the role of waterproof and fire prevention, and ensures the safety used in outdoor or other special environments.

Claims (7)

1. A cable junction box, characterized in that: after the upper part (8) and the lower part (7) of the flame-retardant insulating shell are clamped, several cavities are formed in it; the main wire (5) and The U-shaped main conductor (1) of the branch wire (6); the U-shaped groove of the main conductor (1) is provided with a transition pressing block (4); the transition pressing block (4) is provided with a locking pressing block (3) ; The main conductor (1) is provided with a connecting pressure plate (2) for closing the U-shaped opening; one end of several compression studs (10) passes through the connecting pressure plate (2) and is pressed on the locking pressure block (3); The housing is provided with several through holes for the main wire (5) and the branch wire (6) to pass through. 2. The cable distribution box according to claim 1, characterized in that: a sealing member (9) made of flame-retardant material is provided on the through hole. 3. The cable distribution box according to claim 1, characterized in that: the inner surface of the U-shaped groove of the main conductor is plated with a tin layer structure (11). 4. The cable distribution box according to claim 1, characterized in that: the contact surfaces of the transitional pressing block (4) and the main conductor (5) and branch conductors (6) are plated with a tin layer structure. 5. The cable distribution box according to claim 1, characterized in that: the contact surface between the locking block (3) and the branch wire (6) is plated with a tin layer structure. 6. The cable distribution box according to claim 1, characterized in that: the main conductor (1) is fixedly arranged in the cavity through the bottom corner studs of the lower part (7) of the insulating case. 7. The cable distribution box according to claim 1, characterized in that there are three compression studs (10) on each main conductor.

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