Casing Assembly Collar Bushing for Wear Reduction
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Solution Overview
Problem
When two elements made of different materials are assembled, the hardness difference leads to wear and tear, causing the shaft hole structure to become eccentric and reducing the smoothness of rotation over time.
Innovation Solution
A casing assembly with two collar components made of different materials, mounted on the movable component, acts as a bushing between the movable component and the hole structures, preventing direct friction and noise generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If two elements made of different materials are assembled as rotation shaft and rotation shaft hole, then the structure is simple and easy to manufacture, but hardness difference causes wearing and tearing, making the shaft hole matching structure eccentric and reducing rotation smoothness
Solution Approach 1:
The patent introduces a bushing as an intermediary component between the rotation shaft and the rotation shaft hole. This bushing acts as a mediator that separates the two different material elements, preventing direct contact and friction between them. The bushing absorbs the wear and tear caused by hardness differences, maintaining the matching structure's eccentricity and rotation smoothness over time, thus resolving the reliability issue while keeping the overall structure simple and manufacturable
2Device complexity
If two elements made of different materials are assembled as rotation shaft and rotation shaft hole, then the structure is simple, but direct friction causes damage and generates noises
Solution Approach 1:
The bushing serves as an intermediary element that separates the rotation shaft from the rotation shaft hole, preventing direct friction between the two different material elements. This intermediary component significantly reduces noise generation from direct contact and friction, while maintaining relatively simple device complexity as the bushing is a straightforward cylindrical component that integrates easily into the existing structure
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 reduces wear and tear, maintaining the smoothness of rotation and stability by using collar components to mitigate friction between elements with different hardness levels.
Implementation Method 1
The movable component and the hole structures are separated, and direct friction, which would otherwise cause damage or generate noises, can be avoided
Data Source
AI summary
A casing assembly is provided in this disclosure. The casing assembly comprises a bezel body, a movable component and two collar components. The bezel body includes at least one pair of hole structures. The movable component has a shaft portion. The two collar components are mounted on two opposite ends of the shaft portion. The shape of the two collar components is adapted to that of at least one pair of hole structures. The movable component is pivotally arranged in at least one pair of hole structures through the two collar components. The movable component and the two collar components are made of different materials.