Circuit Breaker Layout With Lateral Transmission and Larger Arc Chamber
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Solution Overview
Problem
Conventional circuit breakers have a compact structural design, a small arc extinguishing chamber, and a transmission mechanism prone to interference with other components, leading to malfunctions and damage.
Innovation Solution
A circuit breaker design with a housing featuring a recessed accommodation portion and accommodation cavity, a rotating wheel and movable contact, an arc extinguishing device, and a transmission mechanism that transmits signals laterally to drive the movable contact, allowing for a larger arc extinguishing chamber and avoiding interference with other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the arc extinguishing chamber capacity is increased, then the arc extinguishing performance is improved, but the overall height or thickness of the circuit breaker is increased
Solution Approach 1:
The patent changes the transmission direction from vertical to lateral (horizontal), allowing the arc extinguishing chamber to be positioned at the bottom while the transmission mechanism operates in the horizontal plane. This dimensional reorganization enables the arc extinguishing chamber to have sufficient capacity without increasing the vertical height of the circuit breaker, as the transmission mechanism no longer occupies vertical space.
2Ease of operation
If the transmission mechanism transmits signals in the vertical direction, then the opening and closing operations are achieved, but the transmission mechanism is prone to interference with other components
Solution Approach 1:
The transmission mechanism is redesigned to transmit signals in the lateral (horizontal) direction rather than vertically. This dimensional change positions the transmission mechanism in the horizontal plane, separating it from other vertical components and eliminating interference issues while maintaining the opening and closing operational functionality.
3Volume of moving object
If the circuit breaker structure is made compact, then the overall size is reduced, but the arc extinguishing chamber volume is limited
Solution Approach 1:
By changing the transmission direction to lateral, the patent frees up vertical space that can be allocated to the arc extinguishing chamber. This allows the chamber to have sufficient volume for effective arc extinguishing while the overall circuit breaker maintains a compact footprint, as the transmission mechanism operates horizontally rather than vertically.
Data Source
AI summary
A circuit breaker, comprising a housing, an operation assembly, an arc extinguishing device, and a transmission mechanism. The housing has, in a first direction, a bottom and a top opposite to each other, an accommodation portion recessed from the top to the bottom, and an accommodation cavity semi-surrounding the accommodation portion; a rotating wheel and a movable contact connected to the rotating wheel are provided in the accommodation cavity close to the top and adjacent to the accommodation portion in a second direction, wherein the first direction intersects the second direction; the operation assembly is rotatably and detachably connected to the top of the housing; the arc extinguishing device comprises an arc extinguishing chamber located in the accommodation cavity and close to the bottom of the housing. The circuit breaker can avoid interference between the transmission mechanism and other components while increasing the size of the arc extinguishing chamber.