Lockable Modular Fork Assembly for Reconfigurable Pallet Trucks

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Solution Overview

Problem

Conventional pallet trucks with welded forks lack versatility and efficiency in configuration changes, requiring costly retooling and inefficient packing due to permanent attachment, which hinders adaptation to customer specifications and aftermarket modifications.

Innovation Solution

A modular fork and battery box system with lockable forks that can be easily assembled and disassembled, allowing for variable configurations and efficient packing, enabling aftermarket modifications without damaging the battery box.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If forks are welded to the battery box for permanent attachment, then structural strength is improved, but adaptability and ease of modification deteriorate

Engineering Contradiction:
Improvestructural strengthVSAvoidadaptability
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The fork assembly is divided into separate components (forks and battery box) that can be independently assembled and disassembled. The forks are not permanently welded to the battery box, allowing them to be segmented and reconfigured as needed, thus maintaining structural integrity while enabling adaptability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connection between forks and battery box is made dynamic rather than static. The forks can be attached and detached from the battery box, allowing the system to adapt to different configurations and customer specifications without requiring permanent modifications.

Inventive Principle:
Principle #15Dynamics

2Stability of the object's composition

If forks are permanently welded to the battery box, then structural stability is improved, but ease of manufacture and production efficiency deteriorate

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of manufacture
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

By segmenting the fork assembly into detachable components, the manufacturing process becomes more flexible. Forks can be manufactured separately and assembled to the battery box using reversible fastening methods, eliminating the need for costly retooling and enabling faster production cycles.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The design allows for easy recovery and reuse of fork components. If forks need to be replaced or reconfigured, they can be detached from the battery box without damage, allowing for component recovery and reuse, which improves manufacturing efficiency and reduces waste.

Inventive Principle:
Principle #34Discarding and recovering

3Strength

If forks are welded to the battery box, then structural strength is improved, but packing efficiency and shipping cost-effectiveness deteriorate

Engineering Contradiction:
Improvestructural strengthVSAvoidpacking efficiency
Core Design Contradiction:
StrengthVSLoss of substance

Solution Approach 1:

The detachable fork design allows components to be separated for compact packing. Forks can be removed from the battery box and packed separately, maximizing space utilization in shipping containers and reducing transportation costs without compromising structural strength when assembled.

Inventive Principle:
Principle #1Segmentation

4Strength

If forks are permanently attached to the battery box, then structural integrity is improved, but ease of repair and maintenance deteriorate

Engineering Contradiction:
Improvestructural integrityVSAvoidease of repair
Core Design Contradiction:
StrengthVSEase of repair

Solution Approach 1:

The fork assembly is segmented into detachable components that can be easily removed and replaced. This segmentation allows for simple maintenance and repair operations, as damaged forks can be quickly detached and swapped without requiring complex welding or structural modifications to the battery box.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3967644B1Battery box and lockable fork systems for industrial vehicles
Publication Date: 2025.01.15 HYSTER YALE MATERIALS HANDLING INC
  • EP3967644B1 patent drawingFigure 1
  • EP3967644B1 patent drawingFigure 2
  • EP3967644B1 patent drawingFigure 3

AI summary

A modular lockable fork (40) for a vehicle, comprising a heel end and a toe end, wherein the heel end comprises: (i) an upper surface (80) including a first locking component (65), and (ii) a side surface (100) including a second locking component (95).