Two-Member Disc Spring Assembly for Stable Conductive Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing disc spring members struggle to stably exhibit conductivity and heat transfer properties while prioritizing load characteristics.
Innovation Solution
A disc spring member design featuring a first member with higher conductivity and a second member with higher Young's modulus, where the second member increases in diameter from one side to the other, and the first member spans the second member to ensure stable contact and characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single spring member is used to prioritize load characteristics, then load-bearing capability is improved, but conductivity and heat transfer properties become unstable
Solution Approach 1:
The spring member is divided into two separate members: a first spring member that contacts the first pressed body and a second spring member that contacts the second pressed body. This segmentation allows each member to be optimized for its specific function - the first member for conductivity/heat transfer and the second for load-bearing spring characteristics.
Solution Approach 2:
The conductive/heat transfer function is extracted from the spring member and assigned to a separate first spring member made of highly conductive material. This allows the second spring member to focus on providing elastic load characteristics while the first member ensures stable conductivity and heat transfer properties.
2Reliability
If plating is applied to improve conductivity, then electrical conductivity is improved, but plating peeling occurs over time
Solution Approach 1:
Instead of applying plating that will eventually peel, the patent uses a first spring member made of inherently highly conductive material (such as copper or aluminum). This eliminates the need for plating and ensures long-term stability of conductivity properties without the peeling issue that plating would cause.
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
The design allows for stable exhibition of conductivity and heat transfer properties, preventing peeling of plating and ensuring these characteristics are maintained over time.
Implementation Method 1
by providing the second member between the first pressed body and the second pressed body and elastically deforming the second member in the first direction by the first pressed body and the second pressed body
Implementation Method 2
transfer heat from one of the first pressed body and the second pressed body to the other
Implementation Method 3
conduct a current or transfer heat from one of the first pressed body and the second pressed body to the other
Data Source
AI summary
A disc spring device includes a first member and a second member, in which the second member increases in diameter from a side of a first pressed body to a side of a second pressed body in a state of being provided between the first pressed body and the second pressed body, in a cross-sectional view taken along a first direction, the first member spans the second member in the first direction such that the first member is located at least at a radially inner end portion of an outer peripheral surface of the second member facing radially outward and a radially outer end portion of an inner peripheral surface of the second member facing radially inward, and the second member presses the first pressed body via the first member and presses the second pressed body via the first member.