Tapered Spring Plate Strip for Push Switch Stress Reduction
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Solution Overview
Problem
Conventional spring plates in push switches face challenges in distributing stress evenly and securing a switch stroke under varying operating loads, leading to potential mechanical failure and reduced lifespan.
Innovation Solution
The design incorporates a central portion with a strip that tapers from a wider first width to a narrower second width, allowing for stress reduction at the root and enabling the spring plate to endure higher operating loads, with the strip configuration dividing the opening into sections to distribute force effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional spring plate with uniform strip width is used, then the structure is simple and easy to manufacture, but stress concentrates at the root leading to mechanical failure and reduced lifespan
Solution Approach 1:
The spring plate employs a strip with non-uniform width where the first width at the root is greater than the second width at the end. This local variation in geometry redistributes stress along the strip, reducing stress concentration at the root while maintaining structural integrity. The tapered configuration optimizes the mechanical properties at different locations of the same component.
2Strength
If the strip width is increased to endure higher operating loads, then the load-bearing capacity improves, but stress concentration at the root increases leading to potential mechanical failure
Solution Approach 1:
The strip is designed with different widths at different locations: a first width at the root and a second width at the end, where the first width is greater than the second width. This local variation allows the root area to have higher strength to endure operating loads while the tapered transition reduces stress concentration, preventing mechanical failure.
3Reliability
If a tapered strip configuration is used to reduce stress concentration, then the lifespan is extended, but the manufacturing precision requirements increase
Solution Approach 1:
The spring plate features a strip with a first width at the root and a second width at the end, where the first width is greater than the second width. This tapered configuration optimizes stress distribution to extend lifespan. The design balances manufacturing feasibility with performance requirements by implementing a controlled width variation that can be achieved through standard manufacturing processes.
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 configuration reduces stress concentration, secures the switch stroke even at end positions, and extends the lifespan of the spring plate by effectively managing operating loads, enhancing the reliability and durability of push switches.
Implementation Method 1
The strip includes a first width that is positioned adjacent to the part of the inner edge of the opening and a second width that is positioned adjacent to an end of the strip. The first width of the strip is wider than the second width that is positioned adjacent to the end of the strip.
Implementation Method 2
This configuration reduces stress concentration, secures the switch stroke even at end positions, and extends the lifespan of the spring plate by effectively managing operating loads
Data Source
AI summary
A spring plate includes a central portion; an opening that is positioned at a center of the central portion; and a strip extending from a part of an inner edge of the opening that is positioned at the center of the central portion. The strip includes a first width that is positioned adjacent to the part of the inner edge of the opening and a second width that is positioned adjacent to an end of the strip. The first width of the strip is wider than the second width that is positioned adjacent to the end of the strip.