Spring-Loaded Body Tie-Downs for Flexible Chassis Coupling
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Solution Overview
Problem
Existing technologies for securing commercial vehicle bodies to chassis often result in loose components that can be lost during detachment, and they do not adequately address the need for a non-rigid coupling that allows for independent movement of the body relative to the frame.
Innovation Solution
A body tie-down system that includes a mounting plate, a spring assembly, and a rigid member, which provides a semi-resilient joint between the body and the chassis, allowing for non-rigid coupling and independent movement while preventing loose components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid coupling system is used to secure the body to the chassis, then the connection strength is improved, but the ability to accommodate independent movement and reduce damage risk is worsened
Solution Approach 1:
The coupling system transitions from a static rigid connection to a dynamic semi-rigid connection incorporating spring assemblies. The springs allow controlled movement and flexibility while maintaining connection, enabling the body and chassis to move independently when needed while preserving attachment strength.
Solution Approach 2:
The system changes the mechanical parameters of the connection by introducing elastic elements (springs) that modify the stiffness and flexibility characteristics. This allows the connection to adapt between rigid and flexible states based on operational requirements, balancing strength with movement accommodation.
2Stability of the object's composition
If traditional fastening systems are used, then the structural integrity is improved, but the risk of loose components being lost during detachment is worsened
Solution Approach 1:
The coupling system merges multiple components (mounting plates, spring assemblies, fasteners) into an integrated unit where all elements remain attached to the chassis during body detachment. The design ensures that no loose components are released, combining structural integrity with component retention.
Solution Approach 2:
The spring assemblies act as intermediary elements between the mounting plates and fasteners, providing a mechanism that maintains connection stability while preventing loose components from detaching with the body. The springs serve as a buffer that keeps the system together during separation events.
3Ease of operation
If a non-rigid coupling system is used to allow independent movement, then the serviceability and damage prevention are improved, but the connection strength is worsened
Solution Approach 1:
The coupling system is segmented into distinct functional components: mounting plates for attachment, spring assemblies for flexibility, and fasteners for secure connection. This segmentation allows each element to perform its specific function optimally while maintaining overall connection strength despite the non-rigid nature of the assembly.
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 system enhances serviceability by eliminating loose components and reduces the risk of damage to the body and chassis by allowing for flexible movement, thus improving overall vehicle durability and maintenance efficiency.
Implementation Method 1
The rigid member is configured to couple with the mounting plate through the spring assembly to provide a semi-resilient joint between the rigid member and the mounting plate
Implementation Method 2
each of the fasteners including a bolt and a collar that are swaged together
Data Source
AI summary
A body tie-down for a chassis includes a mounting plate, a spring assembly, and a rigid member. The mounting plate is configured to fixedly couple with a body frame member with one or more fasteners, each of the fasteners including a bolt and a collar that are swaged together. The rigid member is configured to couple with the mounting plate through the spring assembly to provide a semi-resilient joint between the rigid member and the mounting plate, the rigid member configured to fixedly couple with a frame.