Vehicle Suspension Subframe with Integrated Damping Body
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Solution Overview
Problem
Existing suspension devices for motor vehicles require significant installation space and are complex to assemble, particularly due to the need for separate support bearings that stiffen the suspension system and absorb vibration peaks.
Innovation Solution
The damping body of the support bearing is integrated into the subframe and connected to the vehicle body via a pull or push rod, allowing for preassembly on the subframe and easy connection, with the option of alignment in the vertical direction or at an angle for optimal installation and force flow, and featuring a cast subframe with stiffening ribs and cavities for protection and space efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a separate support bearing with rod and bearing eyes is used to stiffen the suspension system, then the suspension system gains additional stiffness and vibration control, but the installation space requirement increases and assembly complexity increases
Solution Approach 1:
The support bearing is merged with the subframe by integrating the damping body directly into the subframe structure. The subframe serves dual purposes: as the main structural component and as the housing for the support bearing's damping body, eliminating the need for a separate support bearing assembly and reducing installation space requirements.
Solution Approach 2:
The subframe is designed to perform multiple functions: it provides structural support for the drive unit and simultaneously houses the damping body of the support bearing. This multi-functionality reduces the number of separate components needed and simplifies the overall suspension system architecture.
2Strength
If a separate support bearing with rod and bearing eyes is used to stiffen the suspension system, then the suspension system gains additional stiffness and vibration control, but the assembly complexity increases
Solution Approach 1:
The support bearing is merged with the subframe by integrating the damping body directly into the subframe structure. The subframe serves dual purposes: as the main structural component and as the housing for the support bearing's damping body, eliminating the need for a separate support bearing assembly and reducing installation space requirements.
Solution Approach 2:
The subframe is designed to perform multiple functions: it provides structural support for the drive unit and simultaneously houses the damping body of the support bearing. This multi-functionality reduces the number of separate components needed and simplifies the overall suspension system architecture.
3Object-affected harmful factors
If the damping body is integrated into the subframe with cavity and bearing plate, then the damping body is protected from external influences, but the subframe design complexity increases
Solution Approach 1:
The damping body is nested within a cavity formed in the subframe structure. The bearing plate closes off the cavity and is firmly connected to the subframe, creating a protected environment for the damping body while utilizing the subframe's structural volume efficiently.
Solution Approach 2:
The subframe is designed with specific local features including a cavity for housing the damping body and a bearing plate for closure and connection. These localized structural modifications provide protection and functional integration without requiring complete redesign of the entire subframe.
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
This solution reduces installation space requirements, simplifies assembly, and provides effective vibration absorption by integrating the support bearing into the subframe, ensuring reliable damping of impermissible vibration peaks while protecting the damping body from external influences.
Implementation Method 1
The damping body itself preferably has an elastomer body with a defined spring stiffness or is formed by one
Implementation Method 2
additional stiffen the suspension system or impermissible vibration peaks
Data Source
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AI summary
The invention relates to a suspension device for a drive assembly (22) of a motor vehicle. The suspension device has an assembly support member (16) for vibration attenuation, a housing (16a) of the assembly support member is supported on a vehicle body (10), and a support core (16d) of the assembly support member is connected with an assembly bracket (20) fixed on the power assembly (22); and the suspension device also has an auxiliary support member (18) arranged in parallel with the assembly support member (16), on the one hand, a vibration attenuation body (18a) of the auxiliary support member is connected with the assembly bracket (20), and on the other hand, is connected with the vehicle body (10). A structure convenient to assemble and install is realized through the following method: the vibration attenuation body (18a) of the auxiliary support member (18) is at least partially integrated in the assembly bracket (20), and the vibration attenuation body is indirectly or directly connected with the vehicle body (10) through a pull rod or push rod (18d).