Rubber Drive Unit Mounting With Integrated Joining Aid
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Solution Overview
Problem
Existing drive units for motor vehicle components, such as door units, face challenges in decoupling the engine's vibrations and noise, leading to increased complexity and cost in assembly and acoustics.
Innovation Solution
A rubber-like warehouse with a hollow-cylinder shape and a deepening feature, equipped with a fitting assembly that extends into the deepening, allowing for direct force introduction and deformation of the elastic bearing for secure and low-noise attachment to a carrier component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rubber-elastic bearing is used to decouple the drive unit, then noise and vibrations are reduced, but the assembly process becomes more complex and costly
Solution Approach 1:
The joining aid is integrated directly into the rubber-elastic bearing as an integral component, combining the bearing and joining aid into a single unit. This eliminates the need for separate joining operations and reduces assembly complexity while maintaining the noise and vibration decoupling function of the bearing
Solution Approach 2:
The joining aid on the bearing enables the bearing to be self-installing into the carrier component without requiring additional joining operations or tools. The bearing automatically provides its own joining mechanism through the integrated joining aid, simplifying the assembly process
2Ease of manufacture
If a joining aid is added to the bearing, then the assembly process is simplified, but the bearing structure becomes more complex
Solution Approach 1:
The joining aid is merged with the bearing to form an integral component rather than a separate part. This integration simplifies the overall assembly process while the joining aid's simple geometric design minimizes the increase in bearing structure complexity
Solution Approach 2:
The joining aid is designed as a simple protruding structure on the bearing surface, adding minimal structural complexity while providing effective joining functionality. The design uses simple geometric forms that do not significantly complicate the bearing manufacturing
3Reliability
If the joining aid extends fully into the recess, then the connection is maximally secure, but the elastic bearing cannot deform to its maximum extent
Solution Approach 1:
The joining aid is designed with specific dimensional characteristics (length, diameter) that create an optimal balance between connection security and elastic deformation capability. The joining aid extends partway into the recess rather than fully, providing localized securing while leaving space for the bearing material to deform elastically under dynamic loads
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 simplifies the assembly process, ensures a secure fit, and effectively decouples vibrations and noise, improving the acoustic performance and reducing the overall cost of the drive unit.
Implementation Method 1
a rubber-elastic bearing (4) for the decoupled fastening of a component, in particular a drive unit (1), in a motor vehicle
Implementation Method 2
effectively decouples vibrations and noise, improving the acoustic performance
Data Source
Figure 1~3
AI summary
The invention relates to a rubber elastic bearing (4, 22, 28) for securing a drive unit in a motor vehicle in an uncoupled manner. The bearing (4, 22, 28) can be assembled between a housing (8, 30) of the drive unit (1, 18) and a support component (3, 19, 29), and the bearing (4, 22, 28) can be held at least indirectly in the support component (3, 19, 29) in a form-fitting manner. A joining aid (12, 27, 31) for the bearing (4, 22, 28) is provided such that a secure joint of the form-fitting connection with the support component (3, 19, 29) can be achieved.