Stacked Spring Member With Position-Dependent Spring Constants
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Solution Overview
Problem
Conventional spring members have a uniform spring constant along their plane, limiting their application to specific structures and products, as they cannot vary the spring constant between different positions in the along-plane direction.
Innovation Solution
A spring member design featuring multiple base plates with varying spring protrusions in terms of thickness, volume, number, and material Young's modulus, allowing for different spring constants at different positions by using insertion holes and varying dimensions and configurations of spring protrusions across the plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional spring member with uniform structure is used, then the structure is simple and easy to manufacture, but the spring constant cannot be varied between different positions in the along-plane direction
Solution Approach 1:
The spring member is divided into multiple base plates stacked in the thickness direction, with each base plate containing spring protrusions at different positions. This segmentation allows different regions of the spring member to have different spring constants while maintaining a relatively simple overall structure that is easy to manufacture.
Solution Approach 2:
The invention transitions from a two-dimensional uniform spring structure to a three-dimensional stacked structure with multiple base plates. By adding the thickness direction as a new dimension, the spring constant can be varied in the along-plane direction through selective arrangement of spring protrusions on different base plates, without significantly increasing manufacturing complexity.
2Adaptability or versatility
If multiple base plates with varying spring protrusions are used, then the spring constant can be made different between multiple positions, but the structure becomes more complex
Solution Approach 1:
The spring member is divided into multiple base plates that can be manufactured separately and then stacked. Each base plate can be produced using standard pressing processes, and the modular design allows for easy assembly. This segmentation enables spring constant customization at different positions while keeping the manufacturing process relatively simple and scalable.
Solution Approach 2:
The multiple base plates are designed with universal features such as insertion holes and standardized spring protrusion configurations that can be adapted to different applications. This multi-functionality allows the same basic structure to achieve customized spring constants for various products without requiring completely different manufacturing processes.
3Adaptability or versatility
If spring protrusions are inserted through base plates, then the spring constant can be adjusted by varying insertion positions, but the manufacturing process becomes more complex
Solution Approach 1:
Insertion holes are pre-formed in the base plates at predetermined positions before the spring protrusions are assembled. This preliminary action ensures proper alignment and positioning of spring protrusions, enabling spring constant adjustment at different positions while maintaining manufacturing precision through pre-planned hole locations rather than requiring complex alignment during assembly.
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
Enables the creation of spring members with customizable spring constants across the plane, expanding the range of applicable products and reducing structural restrictions, while also allowing for electrical insulation between pressed bodies if needed.
Implementation Method 1
a plurality of spring protrusions configured to protrude toward either one pressed body of the two pressed bodies and to press the two pressed bodies in directions such that the pressed bodies move away from each other
Data Source
AI summary
A spring member is provided between two pressed bodies facing each other in a first direction and includes base plates stacked in the first direction. Each base plate is provided with spring protrusions protruding toward either one pressed body of the two pressed bodies and pressing the two pressed bodies in directions such that the pressed bodies move away from each other in the first direction. Between two base plates adjacent to each other in the first direction, a base plate positioned closer to the one pressed body is provided with an insertion hole into which a spring protrusion of the other base plate is inserted in a state of penetrating therethrough in the first direction. Among portions in an along-plane direction along a plane orthogonal to the first direction provided with the spring protrusions, the spring constant of at least one portion is different from that of another portion.