Resilient Dampening Element for Gear Shift Detent Noise Reduction
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Solution Overview
Problem
Motor vehicle gear shift assemblies often generate unwanted noise and wear due to component movement, which existing designs fail to adequately address.
Innovation Solution
A gear shift assembly with a frame, yoke, and detent structure, where a dampening element made of resilient material decelerates and stops the detent structure's movement, reducing noise through engagement with a flexible dampening surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the detent structure moves directly into the gate structure without damping, then the gear shift assembly operates with simpler structure and fewer components, but unwanted noise and wear are generated due to direct impact
Solution Approach 1:
A dampening element is introduced as an intermediary component between the detent structure and the gate structure. This dampening element absorbs the impact energy when the detent structure engages with the gate structure, thereby reducing noise and wear without requiring complex active control systems. The dampening element serves as a passive mediator that mitigates harmful effects while maintaining structural simplicity.
Solution Approach 2:
The dampening element is pre-positioned between the detent structure and the gate structure to provide cushioning before impact occurs. This beforehand cushioning prepares the system to absorb impact energy during gear shifting, preventing direct contact between hard surfaces and reducing noise and wear before the harmful effects can manifest.
2Object-generated harmful factors
If a dampening element is added to reduce noise, then sound associated with detent structure movement is dampened, but the device complexity and number of components increase
Solution Approach 1:
The dampening element is implemented as a flexible component that can be integrated into the existing gear shift assembly structure. This flexible dampening element deforms during impact to absorb sound energy, providing noise reduction while maintaining a relatively simple component form factor that minimizes the increase in overall device complexity.
3Speed
If the detent structure is allowed to move freely, then the gear shifting operation is faster and more responsive, but wear on components increases due to uncontrolled impact
Solution Approach 1:
The dampening element is pre-positioned to provide cushioning before the detent structure impacts the gate structure. This allows the detent structure to move freely and quickly during gear shifting operations, while the dampening element is ready to absorb impact energy immediately upon contact, thereby maintaining fast response times while protecting components from wear and extending their longevity.
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 dampens sound and reduces wear by decelerating and stopping the detent structure's movement, enhancing the operational quietness and longevity of the gear shift assembly.
Implementation Method 1
A dampening element constructed of a resilient material has a dampening surface positioned such that as the detent structure moves toward the gear holding position thereof, engagement of the detent structure with the dampening surface decelerates movement of the detent structure to dampen sound associated with the movement
Data Source
AI summary
A motor vehicle gear shift assembly includes a dampening device and a detent structure. The dampening device includes a body structure made of a resilient material, a mounting structure for securing it to structure of the gear shift assembly, and a flexible dampening surface. The flexible dampening surface of the dampening device flexes to decelerate and stop the movement of the detent structure.