Slidable Fifth-Wheel Hitch With Adjustable Guides
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Solution Overview
Problem
Conventional fifth-wheel trailer hitch assemblies require manual repositioning during turns, lack adaptability to varying trailer dimensions, and are prone to jamming due to dependency on anti-friction means, which limits maneuverability and increases the risk of trailer-tow vehicle contact.
Innovation Solution
A sliding and rotatable trailer hitch head assembly with adjustable guides that automatically displaces the pivot point rearward during turns and returns to a straight-line position, allowing for increased maneuverability without the need for additional adapting plates or frequent maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional fifth-wheel trailer hitch assembly is used, then the trailer can be connected to the vehicle, but manual repositioning is required during turns which limits maneuverability
Solution Approach 1:
The hitch head assembly is made dynamically movable along the longitudinal axis of the vehicle through a sliding mechanism. The assembly can automatically shift position during turns without requiring manual intervention, transforming a static hitch system into a dynamic one that adapts to turning conditions.
Solution Approach 2:
The hitch head assembly performs self-repositioning through its sliding mechanism during vehicle turns. The system automatically adjusts its position based on the turning motion, eliminating the need for manual operation by the driver or operator.
2Ease of operation
If the trailer arm is made longer to provide clearance during turns, then maneuverability is improved, but the distance between the trailer and tow vehicle increases causing drag and instability
Solution Approach 1:
The hitch head assembly dynamically adjusts its longitudinal position during turns, automatically moving to provide necessary clearance between the trailer and vehicle corners. This dynamic adjustment eliminates the need for a permanently long trailer arm, maintaining optimal distance during straight-line towing to reduce drag and instability.
3Ease of operation
If a sliding lockable trailer hitch assembly is used, then maneuverability is improved, but the assembly is prone to jamming due to dependency on anti-friction means
Solution Approach 1:
The problematic anti-friction means (bearings, lubricants) are extracted and replaced from the sliding mechanism. The invention uses a direct sliding interface between the hitch head assembly and the vehicle frame that does not rely on friction-reducing components, thereby eliminating the source of jamming while maintaining maneuverability.
4Adaptability or versatility
If conventional fifth-wheel hitch assemblies are used, then the trailer can be connected, but they lack adaptability to varying trailer dimensions
Solution Approach 1:
The hitch head assembly is designed with universal adaptability through its sliding mechanism and adjustable guides, allowing it to accommodate various trailer sizes and configurations. The same basic assembly structure serves multiple functions and adapts to different trailer dimensions without requiring complex additional components.
Data Source
AI summary
A slidable trailer hitch apparatus comprises a trailer hitch head operable to receive a cooperating portion of a trailer, the trailer hitch head adapted to be slidable and rotatable relative to the vehicle about an axis of rotation, first and second parallel spaced part guides fixedly located relative to the vehicle, and a body affixed to and rotatable with the trailer hitch head, the body having a center of rotation about the axis and a distal surface adapted to engage either of the first or second guides when the body is rotated relative to the first and second guides. The engagement of the distal surface upon either of the first or second guides displaces the center of the body and the trailer hitch head parallel to the first or second guide when the trailer hitch head is rotated relative to the first and second guides.