Retaining Ring Plier With Bias Spring Alignment
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Solution Overview
Problem
Existing systems are inefficient in deforming retaining rings from an expanded to a compressed configuration for installation and removal, which is necessary for maintaining parts within recesses.
Innovation Solution
A plier assembly comprising handle assemblies, a main hinge pin, and a bias spring, with a drive assembly that allows for the controlled movement of the handle assemblies to facilitate the deformation of retaining rings, enabling efficient installation and removal by aligning and rotating the support blocks and tip assemblies to engage and disengage the retaining ring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional pliers are used to deform retaining rings, then the device complexity is low, but the productivity and ease of operation are poor due to inefficient deformation capability
Solution Approach 1:
The plier assembly is divided into multiple functional segments: first and second handle assemblies that can move independently, a drive assembly with pivot blocks that provide controlled motion, and a bias assembly that maintains proper positioning. This segmentation allows each component to perform its specific function efficiently, improving overall productivity while keeping the complexity manageable through modular design.
Solution Approach 2:
The plier assembly incorporates dynamic elements including movable handle assemblies relative to each other, a drive assembly that enables controlled pivoting motion, and a bias assembly that provides dynamic positioning feedback. These dynamic components work together to efficiently deform retaining rings through coordinated movement, significantly improving productivity compared to static conventional pliers.
2Ease of operation
If conventional pliers are used for retaining ring installation, then the device complexity is low, but the ease of operation is poor due to difficulty in controlled deformation and engagement
Solution Approach 1:
The bias assembly performs preliminary action by maintaining a biasing force that keeps the support blocks in the correct relative position before deformation begins. This pre-positioning ensures that when the user applies force, the retaining ring deforms smoothly and predictably, making the operation easier and more controlled without requiring complex manual manipulation.
Solution Approach 2:
The drive assembly acts as an intermediary mechanism between the user's input force and the retaining ring deformation. It provides controlled pivoting motion through pivot blocks and pivot pins, translating simple user motion into precise deformation actions. This intermediary system greatly improves ease of operation by eliminating the need for complex hand movements while achieving the same deformation effect.
3Manufacturing precision
If the support blocks are allowed to move freely during handle assembly operation, then the device complexity is low, but the manufacturing precision and reliability are reduced due to misalignment
Solution Approach 1:
The bias assembly provides continuous feedback by maintaining a biasing force that monitors and corrects the relative position of the support blocks during operation. This feedback mechanism ensures the support blocks remain properly aligned throughout the deformation process, improving manufacturing precision and reliability without requiring complex active control systems.
Solution Approach 2:
The bias assembly changes the physical parameter of force application by maintaining a constant biasing force on the support blocks. This parameter change ensures that the support blocks stay in the correct relative position during handle assembly operation, providing precise alignment through a simple and effective force-based constraint rather than complex mechanical positioning.
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 plier assembly effectively deforms retaining rings between expanded and compressed configurations, simplifying the installation and removal process, ensuring secure engagement and easy release, thereby improving the efficiency and reliability of retaining ring operations.
Implementation Method 1
A bias spring is arranged to apply a biasing force to the support blocks of the first and second handle assemblies
Data Source
AI summary
A plier assembly comprises first and second handle assemblies, a main hinge pin, and a bias spring. The first and second handle assemblies each comprise a frame assembly, a support block defining a support block longitudinal axis, a proximal opening, and a distal opening, a tip assembly supported by the first support block, a proximal pin, and a distal pin. The main hinge pin engages the support blocks to support the second handle assembly for movement relative to the first handle assembly. The bias spring is configured to apply a biasing force to the support blocks of the first and second handle assemblies. The proximal openings are sized and dimensioned such that, as the second handle assembly moves relative to the first handle assembly, the longitudinal axes of the support blocks are substantially parallel.