Circuit Breaker Link Pin Support via Elastic Member
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Solution Overview
Problem
The existing apparatus for connecting a link pin in circuit breakers requires numerous components and complicates the assembly process, leading to increased manufacturing costs and reduced productivity.
Innovation Solution
An apparatus featuring a link pin locked within a cage of a movable contactor, supported by a pin supporting member with an elastic portion that elastically deforms to detachably couple with the cage, reducing the number of components needed for connection and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a holder with mounting portion and supporting portion is used to support the link pin, then the link pin can be securely supported and fixed to the cage, but the number of components increases and the assembly process becomes complicated
Solution Approach 1:
The patent merges the mounting function and supporting function into a single pin supporting member. The elastic portion provides mounting capability by elastically deforming to engage with the cage, while the supporting portion simultaneously supports the link pin, eliminating the need for separate holder components.
Solution Approach 2:
The pin supporting member serves multiple functions: the elastic portion acts as both a mounting mechanism (providing elastic deformation for engagement) and a supporting structure, while the supporting portion holds the link pin. This multi-functional design reduces component count while maintaining reliability.
2Reliability
If multiple components (holder, mounting portion, supporting portion) are used to connect the link pin, then secure connection is achieved, but the assembly process time increases and productivity decreases
Solution Approach 1:
By combining the mounting portion and supporting portion into a single integrated pin supporting member, the number of assembly steps is reduced. The elastic portion allows for easy engagement with the cage through elastic deformation, while the supporting portion simultaneously secures the link pin, streamlining the assembly process.
Solution Approach 2:
The elastic portion of the pin supporting member utilizes its own elastic deformation capability to achieve mounting without requiring additional fastening components or complex assembly operations. The component serves itself by using its material properties to accomplish both mounting and supporting functions.
3Reliability
If a traditional holder with separate mounting and supporting portions is used, then the link pin can be firmly fixed, but the manufacturing cost increases due to more components
Solution Approach 1:
The patent combines multiple functional portions (mounting portion and supporting portion) into a single pin supporting member, reducing the total number of components that need to be manufactured, inventoried, and assembled. This integration maintains fixing strength while lowering manufacturing costs through reduced part count.
Solution Approach 2:
The pin supporting member is designed as a multi-functional component where the elastic portion provides mounting capability and the supporting portion secures the link pin. This universal design eliminates the need for separate specialized components, reducing overall manufacturing complexity and cost.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces the number of components required for assembly, simplifies the connecting process, and lowers manufacturing costs by using an elastically deformable pin supporting member to secure the link pin, thereby enhancing assembly productivity.
Implementation Method 1
a pin supporting member having an elastic portion to be elastically deformed by itself and detachably coupled into the cage by the elastic portion so as to support the link pin
Data Source
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AI summary
An apparatus for connecting a link pin of a circuit breaker includes a link (210) for connecting with an operating mechanism and inserted into a cage (110A) of a movable contactor (100), a link pin (130) inserted into the cage to lock the link, and a pin supporting member (170) having an elastic portion (172) so as to be elastically deformable by itself and detachably coupled to the cage by the elastic portion so as to support the link pin. Accordingly, the number of components required supporting the link pin for locking the link of the operating mechanism can be reduced and a working process for assembling or disassembling the components can be simplified.