Carrier Latch Mechanism With Single-Actuator Auto Locking

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Solution Overview

Problem

Existing carriers for work vehicles require manual attachment and latching of implements, lack efficient locking mechanisms, and are prone to wear, with high spare parts costs and limited integration with operator interfaces.

Innovation Solution

A carrier and latch mechanism featuring a pair of brackets, a latch mechanism with lock pins and actuator, and a shield plate, allowing for automated locking and unlocking, reduced wear, and integration with in-cab controls, while maintaining a secure locking force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual attachment and latching mechanisms are used, then device complexity is reduced, but productivity and ease of operation deteriorate due to manual labor requirements

Engineering Contradiction:
Improveattachment speedVSAvoidlatch mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The latch mechanism is designed to automatically engage and lock when the implement is inserted into the carrier. The lock pins are spring-loaded and automatically move into the latch receptacles upon insertion, eliminating manual latching operations while maintaining relatively simple structure.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical latching operations with an automated mechanism that uses the insertion motion itself to trigger the locking action. The spring-loaded lock pins automatically engage with the latch receptacles without requiring separate manual locking steps.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If simple latch mechanisms are used, then device complexity is reduced, but reliability deteriorates due to wear and high spare parts costs

Engineering Contradiction:
Improvelocking reliabilityVSAvoidlatch mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The latch mechanism is divided into separate functional components: lock pins, latch receptacles, and a shield plate. This segmentation allows each component to be optimized independently and facilitates easier maintenance and replacement of wear-prone parts without replacing the entire mechanism.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shield plate is positioned to protect the latch mechanism from external damage and wear before failures occur. This protective element absorbs and distributes wear and damage, extending the service life of the locking components and reducing the frequency of replacements.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Ease of operation

If automated locking mechanisms are integrated with in-cab controls, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improveoperator interface integrationVSAvoidcontrol system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The latch mechanism is designed with universal compatibility with standard in-cab control interfaces. The actuator can be controlled by various input methods (manual switch, sensor, or vehicle control system), allowing the same basic mechanism to serve multiple control scenarios without requiring complex specialized components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4711526A1Carrier frame and latch mechanism
Publication Date: 2026.03.18 DEERE & CO
  • EP4711526A1 patent drawingFigure 1
  • EP4711526A1 patent drawingFigure 2~3
  • EP4711526A1 patent drawingFigure 4~5

AI summary

A carrier with a latch mechanism movable between a locked position and an unlocked position through operation of a single actuator. The actuator provides a locking force to maintain the latch mechanism in the locked position. A visible locking indicator is coupled to the latch mechanism to signal a locking status to an operator.