Shift Dial Bearing Mediator Eliminates Friction and Wear
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Solution Overview
Problem
Conventional dial type shift control apparatuses in electronic shift systems experience friction between the housing and dial, leading to wear, noise, reduced durability, and a 'stuck' phenomenon, causing discomfort and operational issues.
Innovation Solution
A dial type shift control apparatus with a bearing installed between the housing and dial to prevent direct contact, reducing friction and wear, and incorporating a bearing holder to restrain upward movement and prevent dial deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dial is directly installed in the housing with direct contact, then the structure is simple and easy to manufacture, but friction occurs between the housing and dial causing wear, noise, and reduced durability
Solution Approach 1:
A bearing is introduced as an intermediary component between the housing and the dial. The bearing's inner ring contacts the dial while the outer ring contacts the housing, mediating the interaction between these two components. This intermediary structure eliminates direct contact friction between the housing and dial, resolving the wear and durability issues while maintaining structural simplicity through the use of a standard bearing component.
2Ease of operation
If the dial and housing are in direct contact, then the device structure is compact, but friction causes a 'stuck' phenomenon preventing smooth return to Null stage
Solution Approach 1:
The bearing serves as a mediator that enables smooth relative rotation between the dial and housing. By replacing direct surface contact with rolling element contact, the bearing eliminates the stuck phenomenon and ensures the dial can smoothly return to the Null stage. The bearing's design with rollers or balls allows for low-friction rotation while maintaining structural compactness.
3Object-affected harmful factors
If direct contact between housing and dial is used, then manufacturing is simple, but friction causes noise and discomfort to the driver
Solution Approach 1:
The bearing acts as an intermediary that isolates the dial from direct frictional contact with the housing. This mediation eliminates the harmful friction effects that cause noise and driver discomfort. The bearing's rolling contact mechanism significantly reduces friction compared to direct sliding contact, thereby eliminating noise and discomfort while the bearing itself remains a straightforward component to manufacture and install.
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 improves durability and operational feel by eliminating friction and the 'stuck' phenomenon, ensuring smooth dial operation and enhanced user experience.
Implementation Method 1
friction may occur between the housing and the dial when the dial is rotated and operated
Data Source
AI summary
A dial type shift control apparatus for an electronic shift system is provided. The dial type shift control apparatus includes a main housing having a boss portion protruding upward, a bearing fitted to an outside of the boss portion, a rotator fitted to an outside of the bearing, and a shift dial coupled to the rotator. The shift dial covers the rotator and the bearing from above, and the shift dial is configured to rotate with the rotator when operated by a driver.