Disc Spring Claw Hole Structure for Stable Rotary Load
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Solution Overview
Problem
Disc springs used on rotary shafts experience unstable load characteristics due to changing rotational speeds, causing variations in the pushing force and deformation of claw portions.
Innovation Solution
Incorporating a hole at the tip of the claw portion, which reduces the mass affected by centrifugal force and limits the pushing force, thereby stabilizing load characteristics by maintaining a stronger root part cross-sectional area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the claw portion is made solid without holes, then the pushing force due to centrifugal force increases with rotational speed, but the load characteristics become unstable and change according to rotational speed
Solution Approach 1:
The patent extracts material from the tip part of the claw portion by forming holes, removing the portion that generates excessive centrifugal force while preserving the structural integrity and function of the claw portion
Solution Approach 2:
The patent applies different structural qualities to different parts of the claw portion - the tip part has holes to reduce centrifugal force effect, while the root part maintains solid structure to ensure strength, creating local quality differentiation
2Force
If the tip part of the claw portion is reduced in mass by adding holes, then the pushing force due to rotation is limited, but the strength of the root part must be maintained
Solution Approach 1:
The hole formation is localized to the tip part of the claw portion, creating a quality differentiation where the tip has reduced mass for force control while the root part maintains full strength for structural support
Solution Approach 2:
The claw portion is segmented into different functional zones - the tip part with holes for centrifugal force management and the root part without holes for strength, allowing independent optimization of each segment
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 solution effectively stabilizes load characteristics by reducing the mass of the claw tip and maintaining the strength of the root part, resulting in consistent performance across varying rotational speeds.
Implementation Method 1
when the disc spring rotates, the centrifugal force acts on the claw portion and causes the claw portion to be pushed to be deformed such that the claw portion rises outward in the axial direction
Implementation Method 2
when a load in the axial direction acts on a portion between the body portion and the claw portion, the body portion is elastically deformed, and the tip of the claw portion moves (strokes) in the axial direction
Data Source
AI summary
The disc spring is a disc spring for being fitted on a rotary shaft and includes: an annular body portion; a claw portion protruding inward in a radial direction from an inner peripheral edge of the body portion, wherein the claw portion gradually extends toward one side in an axial direction as it goes inward in the radial direction, and at least a tip part of the claw portion is provided with a hole.