Rubber-Elastic Drive Unit Bearing With Joining Aid for Low-Noise Mounting
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Solution Overview
Problem
Existing motor vehicle drive units face challenges in achieving low-noise and secure mounting while ensuring easy installation, particularly in decoupling vibrations and noises generated by electric motors, which affects the comfort and safety of motor vehicle occupants.
Innovation Solution
A rubber-elastic bearing with a multi-part design and a joining aid is used for decoupled fastening between the drive unit's housing and a carrier component, allowing for secure and easy installation by transmitting a direct force component through the joining aid, which is integral or separate, to facilitate secure interlocking with the carrier component, thereby enhancing acoustic decoupling and vibration absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rubber-elastic bearing is used for decoupled fastening of the drive unit, then noise and vibrations are reduced, but installation difficulty increases due to secure interlocking requirements
Solution Approach 1:
The joining aid is designed to facilitate the insertion process before the bearing is fully installed. The aid includes features such as a tapered section or cam action that allows the bearing to be easily pushed into the carrier component, establishing the interlocking connection in advance of final installation position.
Solution Approach 2:
A joining aid serves as an intermediary tool between the installer and the rubber-elastic bearing. This aid includes features such as a tapered section, cam action mechanism, or lever arm that translates simple installer motion into the complex motion required to establish secure interlocking of the bearing with the carrier component.
2Reliability
If secure interlocking is achieved through complex joining mechanisms, then mounting reliability improves, but device complexity increases
Solution Approach 1:
The bearing is divided into distinct functional sections: a first portion for vibration decoupling, a second portion for joining, and an intermediate portion connecting them. This segmentation allows each section to be optimized independently - the first portion for acoustic decoupling and the second portion for secure mechanical interlocking.
Solution Approach 2:
The joining aid acts as a temporary intermediary that simplifies the installation process. It includes features such as a tapered section or cam action that translates simple installer motion into complex bearing deformation and interlocking actions, then is removed after installation, leaving a simple yet reliable bearing-carrier connection.
3Ease of manufacture
If the bearing is designed as a single integrated component, then manufacturing is simpler, but installation and adjustment flexibility are reduced
Solution Approach 1:
The bearing is segmented into a first portion for decoupling, a second portion for joining, and an intermediate portion. This segmentation can be achieved through co-molding or bonding different material sections, maintaining manufacturing efficiency while enabling differential optimization of each section's properties and installation characteristics.
Solution Approach 2:
The bearing utilizes composite construction with different material properties in different sections. The first portion may use materials optimized for vibration damping, while the second portion uses materials optimized for mechanical interlocking, with an intermediate portion connecting them. This can be achieved through co-molding or bonding dissimilar materials.
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 noise and vibrations, ensuring secure and easy installation of the drive unit while maintaining the elasticity of the rubber-elastic bearing, thus improving the acoustic and structural integrity of the motor vehicle assembly.
Implementation Method 1
rubber-elastic bearing for the decoupled fastening of a component, in particular a drive unit
Implementation Method 2
The solution effectively reduces noise and vibrations, ensuring secure and easy installation
Data Source
AI summary
A rubber elastic bearing for securing a drive unit in a motor vehicle in an uncoupled manner. The bearing can be assembled between as housing of a drive unit and a support component, and the bearing can be held at least indirectly in the support component in a form-fitting manner. A joining aid for the bearing is provided such that a secure joint of the form-fitting connection with the support component can be achieved.