Backhoe Attachment Mechanism Quick Connect System

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Solution Overview

Problem

The existing backhoe attachment mechanism to a vehicle body is cumbersome, requiring pin insertion and bolt usage, making it difficult to attach or detach the backhoe efficiently.

Innovation Solution

A mechanism featuring engaging and locking members with urging members and positioning pins allows for easy attachment and detachment of the backhoe without pins or bolts, using a locking mechanism that switches between engaging and releasing positions to stabilize the attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a pin and bolt attachment mechanism is used, then the backhoe can be securely attached to the vehicle body, but the attachment and detachment operations become troublesome and time-consuming

Engineering Contradiction:
Improveattachment securityVSAvoidattachment operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The attachment mechanism is divided into separate functional components: an engaging member with engaging protrusions on the backhoe, a corresponding engaged member with recesses on the vehicle body, and a locking member with locking protrusions. This segmentation allows each component to perform its specific function independently, enabling secure attachment through simple engagement and locking operations without requiring multiple fastening steps

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The engaging member is designed with engaging protrusions that automatically engage with the recesses of the engaged member when the backhoe is brought near the vehicle body. This preliminary engagement action occurs before the locking member is activated, ensuring that the backhoe is preliminarily secured to the vehicle body, and subsequent locking simply prevents detachment

Inventive Principle:
Principle #10Preliminary action

2Reliability

If pins and bolts are used for attachment, then the connection is secure, but the number of parts and operational complexity increases

Engineering Contradiction:
Improveconnection securityVSAvoidattachment mechanism structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention merges the functions of engagement and locking into a unified mechanism. The locking member integrates both the locking function (via locking protrusions engaging with locking recesses) and the releasing function (via urging members that can be activated to disengage). This consolidation reduces the number of separate components compared to traditional pin-and-bolt systems while maintaining secure connection

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The invention extracts and eliminates the need for separate pins and bolts by integrating all attachment functions into the engaging member, engaged member, and locking member assembly. The urging member is extracted as a separate component to provide the necessary biasing force, simplifying the overall structure by removing unnecessary fastening elements

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of operation

If a simple engagement mechanism is used, then attachment is easy, but the risk of inadvertent detachment increases

Engineering Contradiction:
Improveattachment easeVSAvoidattachment stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The locking member is designed with locking protrusions that automatically engage with locking recesses in the engaged member when the backhoe is attached to the vehicle body. This preliminary locking action occurs as part of the attachment process, preventing any possibility of inadvertent detachment before the operator even completes the attachment operation. The urging member maintains continuous biasing force to ensure the locking protrusions remain engaged

Inventive Principle:
Principle #9Preliminary anti-action

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 quick and stable attachment and detachment of the backhoe, preventing inadvertent detachment and reducing operational complexity while maintaining structural integrity.

Implementation Method 1

a first urging member is provided for urging the engaging member to switch the engaging member to the non-engaging position

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a locking member for fixing the engaging member to the engaged member under mutually engaged state thereof

Methodology Applied
Scientific EffectMechanical Fastening: Mechanical Fastener

Data Source

PatentUS10145082B2Work vehicle and backhoe
Publication Date: 2018.12.04 KUBOTA CORP
  • US10145082B2 patent drawing
  • US10145082B2 patent drawing
  • US10145082B2 patent drawing

AI summary

A work vehicle including an attachment mechanism for attaching a backhoe to a vehicle body. The attachment mechanism includes a pin provided in the vehicle body, an engaging body provided in the backhoe and engageable with the pin, and a locking body for fixing the engaging body to the pin under mutually engaged state. As the engaging body comes into engagement with the pin, the engaging body and the pin are fixed under the mutually engaged state.