Vehicle Level Adjustment Adapter Sleeve Design
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Solution Overview
Problem
Existing level adjustment devices for motor vehicles are complex in design and installation, and they are acoustically coupled to the chassis suspension, leading to noise generation issues due to the use of multiple adapter sleeves and spacing components.
Innovation Solution
A simplified level adjustment device using a single adapter sleeve with a radially inward flange that is axially supported on the cylinder, featuring elastic elements for acoustic decoupling, eliminating the need for additional adapter sleeves and ensuring rotational fixation, thereby reducing noise transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple adapter sleeves and spacing components are used to mount the ball screw drive, then the installation is possible due to tolerance compensation, but the device complexity increases and acoustic coupling to the chassis suspension occurs leading to noise generation
Solution Approach 1:
The patent combines multiple separate components (adapter sleeve and spacing sleeve) into a single integrated adapter sleeve that performs both functions: compensating for tolerance variations and providing acoustic decoupling. This merging eliminates the need for multiple separate parts while maintaining installation feasibility and reducing overall device complexity.
Solution Approach 2:
The adapter sleeve acts as an intermediary component between the ball screw drive and the piston-cylinder unit. It incorporates elastic elements that serve as mediators to acoustically decouple the ball screw drive from the chassis suspension, thereby reducing noise transmission while enabling proper mounting.
2Ease of manufacture
If multiple adapter sleeves and spacing components are used, then proper mounting is achieved, but noise generation increases due to acoustic coupling with the chassis suspension
Solution Approach 1:
The adapter sleeve incorporates elastic elements as intermediary components between the rigid ball screw drive and the chassis suspension. These elastic intermediaries act as vibration isolators that reduce acoustic coupling and minimize noise transmission to the chassis suspension while still enabling proper mounting.
Solution Approach 2:
The patent changes the physical parameters of the mounting connection by introducing elastic elements with specific material properties (viscoelasticity, damping characteristics). This parameter change transforms the rigid acoustic coupling into a damped, noise-reducing connection that maintains mounting capability while reducing harmful noise generation.
3Ease of operation
If the cylinder outer diameter is used directly for mounting, then the mounting process is simplified, but the great tolerances make direct placement of the ball screw drive impossible
Solution Approach 1:
The adapter sleeve is designed with dimensional parameters that compensate for the cylinder's tolerance variations. By incorporating adjustable or flexible dimensional parameters in the adapter sleeve (such as elastic deformation capabilities or tolerance-absorbing features), the system accommodates the cylinder's great tolerances while maintaining precise mounting of the ball screw drive.
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 provides a more straightforward installation process, reduces noise generation by decoupling the adapter sleeve from the cylinder, and supports the level adjustment system effectively, minimizing the number of components and ensuring precise positioning without direct contact, thus enhancing the overall system's acoustic performance.
Implementation Method 1
the adapter sleeve is acoustically decoupled in relation to the cylinder via at least one elastic element
Implementation Method 2
at least one elastic element...arranged between the adapter sleeve and the cylinder
Data Source
AI summary
A level adjustment device for a vehicle, comprising a damping device having a piston-cylinder unit and a screw drive, and an adapter sleeve that axially supports a spindle of the screw drive and includes a flange directed radially inwards, wherein the adapter sleeve is configured to utilize the screw drive and is decoupled in relation to a cylinder of the piston-cylinder unit via one or more elastic elements.