Trailing Arm Connection Assembly Alignment
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Solution Overview
Problem
Existing vehicle suspension systems for heavy-duty commercial vehicles face challenges in providing a simple, economical, and durable connection between trailing arms and other suspension elements, particularly in preventing misalignment and accommodating various suspension platforms without requiring specialized tools.
Innovation Solution
A trailing arm connection assembly that includes a mounting bracket, a trailing arm, an air spring assembly, and a pivotable connector system with bushing and pin members, along with mechanical fasteners, which allows for easy assembly and secure coupling of the trailing arm to the mounting bracket, preventing misalignment through tab and notch configurations and enabling adjustable alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional trailing arm connection assembly is used, then the connection between trailing arm and mounting bracket is achieved, but misalignment occurs and specialized tools are required for assembly
Solution Approach 1:
The connection assembly is divided into separate modular components: a connector with alignment tabs, a mounting bracket with corresponding notches, a bushing member, and a pin member. This segmentation allows each component to perform its specific function independently, enabling tool-free assembly while preventing misalignment through the tab-notch interface.
Solution Approach 2:
The alignment tabs on the connector act as intermediaries that engage with notches in the mounting bracket to prevent misalignment. The bushing member serves as an intermediary between the connector and pin member, facilitating smooth movement and reducing wear while maintaining proper alignment during assembly.
2Ease of manufacture
If a simple connection design is used, then manufacturing cost is reduced, but durability and alignment precision deteriorate
Solution Approach 1:
The alignment tabs and notches are pre-formed as integral features of the connector and mounting bracket respectively, during the molding or fabrication process. This preliminary action ensures proper alignment is built-in from the start, eliminating the need for complex alignment mechanisms while maintaining durability and precision.
Solution Approach 2:
The bushing member is nested within the connector, and the pin member passes through both the bushing and connector. This nested arrangement allows multiple functional elements (alignment, cushioning, rotation) to be integrated in a compact configuration, maintaining reliability without increasing manufacturing complexity.
3Adaptability or versatility
If a fixed connection is used, then alignment precision is maintained, but adaptability to different suspension platforms is reduced
Solution Approach 1:
The connection assembly transitions from a fixed rigid connection to a dynamic adjustable connection. The pin member can be removed and reinserted at different positions along the connector, allowing the trailing arm to be adjusted to various angles and positions. This dynamic capability enables the same assembly to adapt to different suspension platforms while maintaining precise alignment through the tab-notch interface.
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 robust, long-lasting, and cost-effective suspension arrangement that can be easily assembled and adapted across different platforms, ensuring proper alignment and load distribution while allowing for rotational movement and vibration absorption.
Implementation Method 1
a bushing member received within the first end of the trailing arm, a pin member received within the bushing member
Implementation Method 2
an air spring assembly configured to bias the second end of the trailing arm from the vehicle frame member
Data Source
AI summary
A vehicle suspension arrangement includes a mounting bracket, a trailing arm, an air spring assembly configured to bias a second end of the trailing arm from a vehicle frame member, an axle assembly couple to the trailing arm, and a trailing arm connection assembly that includes a connector having a first portion received within an aperture of the mounting bracket, and a second portion extending outwardly from the first portion and including an aperture, a bushing member received within a first end of the trailing arm, a pin member received within the bushing member and including a first aperture, and a first mechanical fastener received within the first aperture of the pin member and within the aperture of the second portion of the first connector, thereby pivotably securing the trailing arm to the mounting bracket.