Trailer Hitch Jack Assembly for Even Tongue Weight Distribution
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Solution Overview
Problem
As trailer loads increase, excessive tongue weight can push down the rear of the tow vehicle, leading to instability. Existing weight distribution hitches struggle to effectively distribute this weight among all the tow vehicle and trailer wheels.
Innovation Solution
A jack assembly with a telescoping mechanism and link assembly is integrated into the weight distribution hitch. This assembly includes a base with a frame rail passage, a telescoping assembly with an outer and inner tube, and a link assembly with spherical end links. The telescoping assembly adjusts to accommodate varying lengths, while the link assembly distributes the weight more evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a weight distribution hitch uses spring bars to distribute tongue weight, then the tow vehicle remains nearer to level from front to back, but the device complexity increases due to the need for telescoping assemblies and link mechanisms
Solution Approach 1:
The jack assembly is divided into distinct functional segments: a base portion for mounting, a telescoping assembly with inner and outer tubes for length adjustment, and a link assembly with spherical joints for force transmission. This segmentation allows each component to be optimized independently while maintaining overall stability.
Solution Approach 2:
The telescoping assembly employs a nested structure where the inner tube is housed within the outer tube, allowing compact storage and smooth extension. This nested configuration reduces spatial requirements while providing the necessary adjustment range for weight distribution.
2Adaptability or versatility
If the telescoping assembly allows length adjustment to accommodate varying loads, then the adaptability increases, but the device complexity increases due to threaded shafts and locking mechanisms
Solution Approach 1:
The telescoping assembly transitions from a static fixed-length structure to a dynamic adjustable-length structure. The inner tube can extend and retract relative to the outer tube, allowing the jack assembly to adapt to different tongue weights and trailer configurations while maintaining structural integrity.
Solution Approach 2:
The length parameter of the telescoping assembly is made variable through the threaded shaft mechanism. By rotating the threaded shaft, the inner tube moves axially, changing the overall length of the assembly to match different load requirements.
3Reliability
If the link assembly uses spherical joints to distribute weight evenly, then the reliability of weight distribution improves, but the device complexity increases due to multiple links and fastening points
Solution Approach 1:
Spherical joints are used at critical connection points where the link assembly interfaces with the telescoping assembly and spring bars. These spherical connections allow for multi-directional movement and force distribution, ensuring reliable weight transfer while accommodating minor misalignments and movements during towing.
Data Source
AI summary
A hitch assembly includes a jack assembly that includes a base that includes a frame rail passage. A telescoping assembly that extends along a central longitudinal axis includes an outer tube fixed to the base. An inner tube moveable along the central longitudinal axis within the outer tube to adjust a length of the telescoping tube assembly. A link assembly includes a first spherical end link attached to the telescoping assembly with a first spherical joint. A second spherical end link is fixed relative to the first spherical end link and has a second spherical joint. A spring bar is pivotably attached to the first spherical link end.