Modular Pallet Latching Assembly for Easier Forklift Maintenance

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Solution Overview

Problem

Existing pallet latching mechanisms are difficult to maintain and repair due to their complex construction, requiring the removal and replacement of multiple individual pieces welded to the pallet's bottom rail.

Innovation Solution

A latching mechanism assembly that can be installed and removed as a unit, featuring a bolt movable between latching and unlatching positions, an actuator, a link, and a spring, which is engaged by a forklift truck to facilitate easy replacement and maintenance by cutting spot welds for installation of a new assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the latching mechanism comprises multiple individual pieces welded to the bottom rail of the pallet, then the latching mechanism achieves reliable retention of the pallet on the support, but the maintenance and repair of the latching mechanism becomes difficult as the pieces must be removed, repaired and/or replaced individually

Engineering Contradiction:
Improvepallet retention reliabilityVSAvoidmaintenance difficulty
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The latching mechanism is divided into a modular assembly comprising a base plate, bolt, actuator, and link that can be removed and replaced as a single unit. This segmentation allows the entire latching assembly to be replaced without removing individual welded pieces, thereby maintaining reliability while dramatically improving ease of repair.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple components (base plate, bolt, actuator, link) are merged into a single integrated latching assembly that functions as one replaceable unit. This merging eliminates the need to disassemble and repair individual welded pieces, resolving the contradiction between reliable retention and ease of repair.

Inventive Principle:
Principle #5Merging (Combining)

2Stability of the object's composition

If the latching mechanism comprises multiple individual pieces that are welded or attached to the bottom rail of a pallet, then the latching mechanism provides stable retention, but other parts must be dismantled to access the individual pieces to be replaced

Engineering Contradiction:
Improvelatching mechanism stabilityVSAvoidassembly complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The latching mechanism is segmented into a self-contained modular assembly with a base plate that attaches to the pallet, a bolt, an actuator, and a link. This segmentation maintains stable retention through the integrated design while reducing overall device complexity by making the assembly replaceable as a unit without dismantling other parts.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The latching mechanism incorporates movable components (bolt that moves between latching and unlatching positions, actuator that moves upwardly and downwardly, link that rotates about a fixed point) within a stable overall structure. This dynamic design maintains retention stability while simplifying the assembly into a manageable replaceable unit.

Inventive Principle:
Principle #15Dynamics

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

Enables efficient maintenance and repair by allowing the latching mechanism to be replaced as a single unit, reducing the complexity and time required for maintenance, while maintaining the mechanical advantage and functionality of the existing mechanisms.

Implementation Method 1

a spring for urging the bolt to the latching position thereof

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 2

a link mounted for rotation about a fixed point, first coupling means for coupling the bolt to the link, second coupling means for coupling the actuator to the link

Methodology Applied
Scientific EffectRotation:

Implementation Method 3

an actuator movable substantially upwardly and substantially downwardly, engaging means on the actuator for being engaged by the fork of a lift truck for moving the actuator substantially upwardly to move the bolt to the unlatching position

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS20240262280A1Pallet Latching Assembly
Publication Date: 2024.08.08 WELDING OF AMERICA
  • US20240262280A1 patent drawing
  • US20240262280A1 patent drawing
  • US20240262280A1 patent drawing

AI summary

A truck bed is divided into a plurality of bays, each bay being defined by a pair of dividers. In each bay is a pallet. A latching mechanism assembly is attached to a bottom rail of each pallet and comprises a bolt which is spring-loaded outwardly, through the keeper hole in an adjacent divider. A triangular link is rotatably mounted at a fixed pivot point in the assembly. The bolt is coupled to a second point on the link. An actuator is movable substantially vertically and is attached to a third point on the link. When the fork of a lift truck engages the actuator and raises it, the link is caused to rotate about the fixed pivot point, to withdraw the bolt and thereby unlatch the latching mechanism.