Offset-Groove Hog Ring Pliers for Auto-Feed Ring Separation
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Solution Overview
Problem
Existing hog ring pliers are inadequate for gripping and separating hog rings connected in auto-feed mechanisms, requiring multiple tools for removal and installation during automotive seat repairs.
Innovation Solution
A pliers-type tool with specialized jaw geometry and offset grooves allows for efficient gripping, manipulation, and installation of hog rings, including those in auto-feed mechanisms, by enabling the tool to separate and form hog rings without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional hog ring pliers are used, then hog rings can be installed, but they cannot grip and separate hog rings connected in auto-feed mechanisms
Solution Approach 1:
The jaw is divided into multiple functional regions: a relief region for gripping and separating hog rings, and a groove region for guiding and forming the hog ring during installation. This segmentation allows each region to perform its specific function optimally, enabling the tool to handle both auto-feed and manual hog rings effectively
Solution Approach 2:
Different portions of the jaw are given different geometries tailored to specific tasks. The relief region has a geometry optimized for gripping and separating hog rings, while the groove region has geometry optimized for guiding and forming the hog ring during collapse. This local differentiation enables the single tool to perform multiple operations on different hog ring configurations
2Reliability
If multiple different tools are used for removal and installation, then each tool can be optimized for its specific function, but the overall process becomes more complex and time-consuming
Solution Approach 1:
The tool combines multiple previously separate functions into a single pliers design: the ability to grip and separate hog rings (removal function) and the ability to guide and form hog rings (installation function). By merging these functions into one tool with appropriately designed jaw features, the system reduces the number of tools needed while maintaining task-specific effectiveness
Solution Approach 2:
The pliers are designed with universal applicability to handle both auto-feed hog rings (requiring separation) and individual hog rings (requiring installation). The jaw geometry accommodates multiple operational modes, making the tool versatile enough to replace multiple specialized tools in hog ring applications
3Reliability
If multiple different tools are used for removal and installation, then each task can be performed with specialized equipment, but the repair time increases
Solution Approach 1:
By combining removal and installation capabilities in a single tool, technicians can switch between operations without putting down or picking up different tools. The jaw geometry allows seamless transition from gripping/separating mode to guiding/forming mode, reducing idle time and improving overall repair efficiency
Solution Approach 2:
The multi-functional pliers eliminate the need to switch between specialized removal tools and installation tools. A single universal tool handles both auto-feed hog ring separation and individual hog ring installation, reducing the total time required for repair operations while maintaining reliable performance for each specific task
Data Source
AI summary
A tool includes first and second halves pivotally coupled together at a pivot and having respective first and second jaw portions with respective first and second front faces. The first and second jaw portions have respective first and second contact surfaces disposed proximal to the front faces, and when the first and second contact surfaces are brought together, they cooperatively define a contact plane that extends along a longitudinal axis of the tool. The jaw portions respectively include first and second relief regions having a depth from the contact plane and respective first and second grooves disposed in the relief regions, wherein the first and second grooves are offset by an offset distance.