Power distribution unit and movable type elastic busbar for the same

Abstract

The invention provides a movable type elastic busbar for a power distribution unit, comprising a master conductor with one end being connected to a master switch of the power distribution unit. The movable type elastic busbar also comprises at least two slave conductors. One end of each slave conductor is connected to a slave switch of the power distribution device, and the other end of each slaveconductor can be clamped in the master conductor with a predetermined clamp force, and each slave conductor at the same phase share the line with the connecting part of the master conductor. The invention also provides a power distribution unit, comprising a housing, a master switch, at least two slave switches, and the movable type elastic busbar. The master switch and the slave switches are fixedly disposed in the housing, and the movable type elastic busbar is connected between the master switch and the slave switches. The invention also provides a power distribution unit, comprising a master switch, at least two slave switches, and the movable type elastic busbar connected between the master switch and the slave switches. The invention is advantageous in that the position adjustment of the slave conductors can be conducted based on the demand of a wiring port, and the contact is stable and reliable, and the mounting and dismounting are simple.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, and relates to a mobile elastic busbar for a power distribution device and a power distribution device. Background technique [0002] In the low-voltage power distribution system, the power distribution device includes a distribution box and a combiner box. The distribution box mainly plays the role of diversion, and the combiner box mainly plays the role of confluence. It mainly includes a casing, a main switch, multiple sub-switches and conductive components. The main switch and multiple sub-switches are placed in the casing. The main switch and multiple sub-switches are connected and transmit electric energy through conductive components, that is, the function of the conductive components is Carrying current, shunting or converging, the existing conductive components mainly have three forms: electric wire, bus bar, combination of electric wire and bus bar. [0003] Such as figu...

AI Technical Summary

Problems solved by technology

Because the outlet end of the main switch needs to be connected with multiple electric wires, the multiple electric wires connected to the main switch end need to be crimped together with a terminal, and then connected to the outlet end of the main switch, so it has the following disadvantages: (1 ) The installation process is too complicated, the installation efficiency is low, the more wires, the more messy the wiring; (2) The more sub-switches, the more electrical wires connected to the outlet end of the main switch, making it more difficult for multiple electrical wires to be connected to the outlet end of the main switch Large; (3) there is waste in the use of electric wires, and the cost is high

[0004] The existing conductive assembly in the form of a combination of electric wires and busbars is composed of two electric wires and a bipolar busbar. One end of the electric wire is connected to the outlet end of the main switch, and the other end of the electric wire is connected to the busbar through a terminal block. Then the bus bar is connected to the incoming line end of the sub-switch, and the electric energy enters the sub-switch from the main switch through the electric wire and the bus bar. The connection method is welding connection or screw connection, which has the following disadvantages: (1) The installation process is complicated , the installation efficiency is low; (2) the wiring head is added, the parts are many, and the cost is high; (3) the position between the sub-conductors in the bus bar is fixed, and it cannot be adapted to the switch of various wiring ports, nor can it be used according to the system make adjustments

[0005] Existing conductive components in the form of bus bars, the bus bar has multiple poles, each pole includes multiple conductors, and the electric energy flows from the main switch through multiple conductors into the sub-switches, or the electric energy flows from the sub-switches into the main switch through multiple conductors, The connection methods between the conductors of this type of busbar include screw connection, welding connection or crimping connection, but it has the following disadvantages: (1) Busbars with welding or crimping connection methods: the sub-conductors need to be welded or crimped. On the main conductor, there are many processes, cumbersome packaging and transportation, long production cycle, and high positioning accuracy is required when welding or crimping, which increases the difficulty of production, and the position between the sub-conductors of the formed bus bar is fixed remain unchanged, cannot adapt to the switching requirements of various wiring ports, and cannot be adjusted according to the system; (2) Busbars connected by bolts or screws: screws and nuts are added, the number of parts is large, the cost is high, and the production process is many. The production cycle is long, and the loosening of screws or bolts will cause virtual connections in the circuit, posing safety hazards and easily causing major accidents, and the position between the sub-conductors of the formed bus bar is fixed, which cannot adapt to various wiring The switch requirements of the port cannot be adjusted according to the system.

[0007] (1) During the assembly process: the crimping frame 1 needs to line up and penetrate one end of the confluence body 3 sequentially, and the installation process is tedious; Between the set screws 2, precise positioning is required, and the installation is difficult; in order to ensure reliable contact between the joint piece 4 and the collector body 3, the set screws 2 need to be tightened, which has a long production cycle, heavy workload, and low efficiency; (2) In terms of structure: there is a hidden danger of screw loosening in a vibrating environment, which may easily cause unstable contact resistance; the crimping frame 1 is fixed with the set screw 2, and the process of tightening and loosening the set screw 2 requires a certain amount of room for movement, and The large volume of the wire crimping frame causes the overall volume of the busbar to be large, which is not conducive to the demand for miniaturization of the volume; there are many types of components, complex assembly, long production cycle, and high cost, which cannot meet the needs of fast delivery; (3) in the later stage In terms of system adjustment: because the crimping frame 1 is worn on the bus body 3, the number of crimping frames and connectors cannot be increased or decreased after the bus bar is installed, which is inconvenient for later system adjustments

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