Fifth Wheel Glider Hitch Slide Rail Locking Mechanism

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Solution Overview

Problem

Conventional fifth-wheel trailer hitch systems lack efficient mechanisms for adjusting the position of the fifth wheel assembly relative to the towing vehicle, limiting maneuverability and clearance, which affects the vehicle's ability to perform tight turns.

Innovation Solution

A glider hitch system that includes slide rails and a spring-loaded locking pin mechanism, allowing the fifth wheel assembly to be easily positioned and securely locked along the rails, enabling precise adjustment and increased clearance for improved maneuverability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the fifth wheel assembly is made fixed relative to the towing vehicle, then the hitch system structure is simple, but the maneuverability and clearance are limited

Engineering Contradiction:
ImprovemaneuverabilityVSAvoidhitch system structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by making the fifth wheel assembly longitudinally movable relative to the towing vehicle through slide rails, allowing the system to transition between fixed and movable states. This enables the fifth wheel to be positioned above the rear axle for normal towing or displaced toward the rear end for increased clearance and tighter turns, resolving the contradiction between structural simplicity and maneuverability.

Inventive Principle:
Principle #15Dynamics

2Length of stationary object

If a sliding mechanism is added to adjust the fifth wheel position, then the clearance and maneuverability are improved, but the locking reliability may be compromised

Engineering Contradiction:
ImproveclearanceVSAvoidlocking mechanism
Core Design Contradiction:
Length of stationary objectVSReliability

Solution Approach 1:

The patent applies the self-service principle through the spring-loaded locking pin mechanism that automatically engages with the slide rails to secure the fifth wheel assembly in its desired position. The spring-loaded design provides automatic locking without requiring additional manual intervention, ensuring reliable positioning while maintaining the sliding mechanism's maneuverability benefits.

Inventive Principle:
Principle #25Self-service

3Productivity

If manual adjustment of the fifth wheel is used, then the device complexity is low, but the positioning time and operational efficiency are reduced

Engineering Contradiction:
Improvepositioning speedVSAvoidadjustment mechanism
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies the intermediary principle by introducing a spring-loaded locking pin as a mediator between the sliding mechanism and the fifth wheel assembly. This intermediary component enables quick and easy locking/unlocking of the fifth wheel in desired positions along the slide rails, significantly improving positioning speed while keeping the overall adjustment mechanism relatively simple.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 glider hitch system enhances maneuverability by allowing for quick and secure positioning of the fifth wheel assembly, providing increased clearance and enabling tighter turns without compromising safety or hindering the operation of the hitch system.

Implementation Method 1

spring loaded locking pin mechanism, allowing the fifth wheel assembly to be easily positioned and securely locked along the rails

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentUS8342558B1Glider hitch for trailer fifth wheel
Publication Date: 2013.01.01 SU AUSTIN
  • US8342558B1 patent drawing
  • US8342558B1 patent drawing
  • US8342558B1 patent drawing

AI summary

A fifth wheel glider hitch is disclosed having a pair of sliding rails that support a fifth wheel assembly, the fifth wheel assembly sliding on the rails over first and second brackets that include a locking hole. The sliding rails each have apertures defining a forward position and a rear position, and the glider includes handle with a locking mechanism that traps the assembly in a forward or aft position.