Gear Shift Lever Mount With Wave Damping for Vibration Isolation
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Solution Overview
Problem
Existing mounting devices for actuating members in motor vehicles inadequately suppress vibrations and noise, failing to meet modern driving comfort standards, and often require complex injection molding processes for assembly.
Innovation Solution
A mounting device with a damping element featuring a wavy outer wall and a threaded insert for secure attachment, allowing for improved vibration suppression and simplified, cost-effective assembly of the actuating member, utilizing a separate damping element with an intermittently configured wave profile and a bushing for adaptable mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional mounting device with a cylindrical damping element is used, then the assembly can be manufactured, but the vibration suppression performance is inadequate and the structure is complex requiring injection molding
Solution Approach 1:
The mounting device is divided into separate functional components: the damping element with wave profile is manufactured independently and then inserted into the receptacle, rather than being integrated through complex injection molding. This segmentation simplifies the overall assembly structure while maintaining effective vibration suppression through the specialized wave profile geometry
Solution Approach 2:
The damping element features a localized wave profile on its outer surface that creates specific contact points with the receptacle walls. This local geometric modification concentrates damping action at critical interfaces while keeping the rest of the structure simple, thereby improving vibration suppression without increasing overall device complexity
2Ease of manufacture
If injection molding is used to mount the actuating member, then assembly can be achieved, but the manufacturing process is complex and costly
Solution Approach 1:
The actuating member mounting is achieved through separate components that are assembled together, eliminating the need for complex multi-material injection molding processes. The damping element, receptacle, and actuating member are manufactured independently using simpler processes and then assembled, reducing manufacturing complexity and cost
Solution Approach 2:
The damping element serves as an intermediary component between the receptacle and the actuating member, providing both mechanical connection and vibration damping functions. This intermediary approach allows for simpler manufacturing of each individual component while achieving the combined functionality that would otherwise require complex injection molding
3Stability of the object's composition
If a rigid mounting connection is used, then structural stability is achieved, but vibration transfer to the vehicle interior increases
Solution Approach 1:
The wave profile on the damping element creates localized contact points with the receptacle walls, providing stable mechanical support at these discrete locations while allowing the damping material to absorb vibrations between contact points. This local contact approach maintains mounting stability while reducing vibration transfer
Solution Approach 2:
The damping element combines rigid geometric structure (wave profile) with viscoelastic damping material properties. The rigid wave profile provides structural stability and positioning, while the viscoelastic material dissipates vibration energy, achieving both stability and vibration reduction simultaneously
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 the transfer of undesired vibrations to the vehicle interior, enhancing both vibration suppression and noise comfort while facilitating a detachable, cost-effective mounting process that is more flexible and stable.
Implementation Method 1
an elastic damping element is arranged between the eyelet-like outer receiving element and the inner receiving element arranged therein
Implementation Method 2
The elastic damping element in the receptacle, which is arranged between the eyelet-like outer receiving element and the inner receiving element arranged therein, serves to damp the transfer of vibrations of the transmission
Data Source
AI summary
A device (1) for removably securing an actuating member to an input or output element, such as to a gear shift lever or a transmission of a motor vehicle, has a mounting point (10) for the actuating member, and a receptacle (20) for a mounting element of the input or output element. The receptacle (20) has an outer receptacle element (30) and an inner receptacle element (40) arranged therein, between which is an elastic damping element (50). To reduce undesired vibrations from the transmission or the actuating member to the interior of the vehicle, while securing the actuating member to the mounting device in a simpler manner, the damping element is a separate component which has a wave profile (52) on its wall (51) facing the outer receptacle element (30), and the mounting point (10) has a threaded insert (11) for securing the actuating member.