Spring Steel Sleeve Retainer to Block Mud and Ease Unlocking
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Solution Overview
Problem
Existing retaining mechanisms for work implement assemblies, such as those used in earth-moving equipment, face issues with mud or debris packing and increased force requirements for unlocking, which hinder their performance.
Innovation Solution
A spring steel sleeve design with a spring-loaded retainer that includes a lug receiving portion and a drive portion, configured to minimize assembly force and prevent debris entry, using a flange to secure the retainer and springs to maintain the locked or unlocked configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a retaining clip is used to prevent rotation of the mounting component, then the retaining mechanism can hold the wear member, but mud or other material can pack into the retaining mechanism and hinder its performance
Solution Approach 1:
The retainer is extracted from a traditional clip design and transformed into a spring-loaded mechanism with a retainer body that can be independently actuated. This allows the retaining function to be separated from the mounting component, enabling the retainer to be unlocked and removed without affecting the mounting component structure, thereby preventing mud packing issues.
Solution Approach 2:
The static retaining clip is replaced with a dynamic spring-loaded retainer system. The spring mechanism allows the retainer to be easily actuated between locked and unlocked states, providing dynamic control over the retaining function while maintaining reliability and preventing material packing through controlled movement.
2Reliability
If a retaining clip is used to secure the mounting component, then the wear member can be held, but the force necessary to unlock the retaining mechanism increases to an undesirable extent
Solution Approach 1:
The spring-loaded mechanism provides dynamic force multiplication, allowing a small input force on the drive portion to generate sufficient unlocking force through the spring's mechanical advantage. This maintains secure retention during normal operation while enabling easy unlocking when needed.
Solution Approach 2:
The traditional mechanical clip retention system is replaced with a spring-loaded mechanical system that uses elastic energy storage and release. This substitution provides both secure retention and easy actuation through the spring's inherent mechanical advantage, reducing the force required for unlocking.
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 solution effectively prevents mud and debris from entering the retaining mechanism while reducing the force needed to unlock the mechanism, enhancing operational efficiency and reliability.
Implementation Method 1
a spring having a folded body including a flat base defining a front face, a rear face, a first side edge, a second side edge, a top edge, a bottom edge, and a flat base thickness measured from the front face to the rear face; and a first spring arm extending from the first side edge of the flat base
Data Source
AI summary
A spring loaded retainer includes a lug receiving portion defining a first maximum outside dimension, the lug receiving portion also defining a lug receiving slot that extends partially through the lug receiving portion, forming a first sidewall, a second sidewall, and a catch surface connecting the first sidewall to the second sidewall. A drive portion defines a second maximum outside dimension, and a first flat is disposed on the outside of the lug receiving portion proximate to the first sidewall or the second sidewall.