Plug-in base of plastic shell type electric appliance having multiple wiring functions

Abstract

The invention relates to a plug-in base of electrical appliances such as a plastic housing type breaker with various wire-connecting modes and combined functions, etc., comprising a socket component bearing a contact stud of the electrical appliance body, a wire-connecting device connecting inlet-outlet wires and a connecting plate connected with the socket component; various wire-connecting devices at front of the plate and / or at the back of the plate can be connected by the connecting plate in a mode of exchange and selection; the plug-in base is also provided with assembled connecting structure which can combine and assemble the two plug-in bases together, just like a single-stage base and a three-stage base are combined into a four-stage base; the plug-in base is also provided with a structure which is convenient for pulling out the breaker body from the base easily; the plug-in base of the invention has wire-connecting devices which can be configured with different forms in the mode of exchange and selection, and can provide various wire-connecting modes of wire-connection at front of the plate and at the back of the plate with different polarities and different directions for users.

Description

technical field [0001] The invention relates to a plug-in base of a molded case electric appliance, in particular to a plug-in base of an easy-to-plug circuit breaker with multiple installation directions, multiple wiring modes and combined functions. Background technique [0002] In order to facilitate the installation and replacement of electrical appliances, and meet the requirements of no power failure and short time during replacement and maintenance, the existing molded case circuit breaker adopts the form that the circuit breaker body and the wiring base are separated. The column is inserted into the socket hole on the wiring base to realize mechanical connection and electrical connection with the wiring base, and the input / output terminals of the wiring device on the base are respectively connected to the circuit. When the circuit breaker needs to be repaired or replaced, the unloaded circuit breaker body can be unplugged from the wiring base. The operation process d...

AI Technical Summary

Problems solved by technology

However, the circuit breaker products currently produced provide a single wiring method, and cannot provide both front-panel and rear-panel wiring modes at the same time. The same product cannot meet the requirements for the use of various wiring devices that can be configured, so it is very inconvenient to use.

[0005] Another problem existing in the existing plug-in molded case circuit breaker is that it takes a lot of effort to pull out the circuit breaker body from the base, and it is difficult to do it manually, so it is very inconvenient to install and disassemble

[0006] In addition, the existing plug-in molded case circuit breakers generally have three poles and four poles, and the plug-in bases of the three-pole and four-pole circuit breakers are independent and cannot be used universally.

Due to the small market demand for four-pole plug-in circuit breakers, the mold cost for designing and manufacturing a special four-pole plug-in base is very high, thus increasing the production and use costs

[0007] To sum up, the main defects of the existing plug-in bases of plastic-cased electrical appliances that need to be improved are: single wiring mode, unable to meet the wiring requirements of incoming and outgoing lines from different directions at the same time, and unable to meet the use of front-panel and rear-panel wiring at the same time Necessary wiring devices such as wiring boards, wiring rods, and cage terminals cannot be interchangeably configured; it is laborious to pull out the electrical body from the base, and it is difficult to do it manually; between the three-pole plug-in base and the four-pole plug-in base It cannot be used universally or combined, which brings inconvenience to use and high production and use costs

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