Height Control Linkage Barrel Assembly for Cab Suspension
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Solution Overview
Problem
Existing height control linkages for vehicle cab suspension systems are time-consuming and ergonomically disadvantageous due to the requirement of screwing one linkage member into another and tightening lock nuts, making length adjustments cumbersome.
Innovation Solution
A height control linkage system comprising a lower and upper linkage member with a C-shaped barrel that allows for adjustable longitudinal connection, enabling easy assembly and adjustment without disassembly, using externally threaded and rotatable components for precise length adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If one linkage member is screwed into another linkage member with lock nuts to adjust length, then the linkage length can be adjusted, but the assembly becomes time-consuming and ergonomically disadvantageous
Solution Approach 1:
The linkage is divided into separate members (first linkage member, second linkage member, barrel) that can be independently assembled and adjusted. The barrel acts as a separate component that connects the two linkage members through a simplified interface, allowing length adjustment without complex threading operations.
Solution Approach 2:
Instead of screwing one linkage member into another (traditional approach), the patent inverts the connection method by using a barrel that receives both linkage members with external threads, allowing them to be screwed into the barrel rather than into each other. This reversal simplifies the assembly process and improves ergonomics.
2Stability of the object's composition
If lock nuts are tightened to maintain linkage member length, then the linkage length is fixed, but the assembly process becomes cumbersome
Solution Approach 1:
The complex lock nut mechanism is extracted and replaced with a simpler barrel component. The barrel itself provides the locking function through its threaded engagement with the linkage members, eliminating the need for separate lock nuts and simplifying the overall assembly process.
Solution Approach 2:
The barrel design allows the linkage members to self-lock through their threaded engagement with the barrel. The alternating ridges and grooves create a self-centering and self-locking mechanism that maintains linkage length stability without requiring additional locking components or complex assembly steps.
3Ease of operation
If alternating ridges and grooves are formed in the barrel, then 360-degree rotation is enabled, but the manufacturing complexity increases
Solution Approach 1:
The alternating ridges and grooves are integrated directly into the barrel manufacturing process as a single forming operation. The barrel is created with these features built-in, combining the rotation-enabling features with the basic barrel structure in one manufacturing step, thereby minimizing additional complexity.
Solution Approach 2:
The alternating ridges and grooves create a curved, non-linear surface profile on the barrel that enables smooth 360-degree rotation. This curved geometry allows the linkage members to rotate freely while maintaining engagement, providing rotational capability through the barrel's shaped surface rather than through separate mechanical components.
Data Source
AI summary
A height control linkage for a vehicle cab suspension comprising upper and lower linkage members which are adjustably joined by a barrel assembly including first and second barrel members which are selectively joined together. The upper linkage member includes a laterally facing socket and a shaft portion which extends therefrom with the shaft portion having a plurality of alternating and spaced-apart annular grooves and ridges which are rotatably secured to the upper ends of the barrel members. The lower linkage member includes a laterally facing socket and a threaded shaft extending upwardly therefrom which is adjustably threadably secured to the lower ends of the barrel members. The length of the height control linkage may be changed by threadably rotating the barrel assembly with respect to the lower linkage member.