Indexable Trim Tool Head for Automotive Fastener Removal
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Solution Overview
Problem
Current automotive trim and fastener removal tools have fixed angles, small fulcrum areas, and lack a low-profile design, making them inefficient and prone to damaging surfaces during use, especially in environments with obstructions and varied fastener orientations.
Innovation Solution
An indexable joint mechanism in a fastener removal tool allows the head to adjust angular orientation relative to the handle, providing a wider fulcrum area and reducing the risk of damage by allowing single-tool use in multiple situations with a low-profile design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed angle tool is used, then the tool structure is simple, but the tool cannot adapt to different fastener orientations and requires multiple tools
Solution Approach 1:
The tool employs an indexable joint mechanism that allows the head to be rotated and locked at multiple angular positions relative to the handle. This dynamic adjustment capability enables the tool to adapt to different fastener orientations while maintaining a relatively simple overall structure through a modular design with splined bores and detent mechanisms.
Solution Approach 2:
The tool integrates multiple functions into a single device by combining a handle, an indexable joint, and a removable head assembly. The universal design allows the same tool to perform fastener removal at various angles and can accommodate different head types, eliminating the need for multiple specialized tools.
2Object-affected harmful factors
If a small fulcrum area is used, then the tool is compact, but the prying forces are concentrated causing surface damage
Solution Approach 1:
The tool head incorporates a wide fulcrum surface with a large contact area that distributes prying forces across a broader region of the trim panel. This local quality enhancement at the fulcrum point prevents concentrated loads that could damage the vehicle surface, while the overall tool head maintains a compact design through optimized geometry.
3Ease of operation
If an indexable joint with threaded fastener is used, then the components are securely retained, but the tool cannot be positioned quickly due to locking mechanism complexity
Solution Approach 1:
The indexable joint uses a dynamic locking mechanism with a movable pin that can be quickly inserted or removed to engage or disengage the splined bore. This allows the user to rapidly reposition the head to different angular orientations by simply moving the pin, providing both secure retention and fast repositioning capability without complex threaded fasteners.
4Adaptability or versatility
If a low-profile design is not used, then the tool structure is simpler, but the tool cannot access fasteners in environments with obstructions
Solution Approach 1:
The tool employs a low-profile head design that reduces the vertical height of the tool assembly, allowing it to access fasteners in tight spaces and environments with obstructions. The indexable joint mechanism adds angular versatility without significantly increasing the profile, achieving both compactness and adaptability through clever spatial arrangement of components.
Data Source
AI summary
An indexable automotive trim fastener removal/disconnection tool is disclosed. The tool may include a handle having a gripping portion, an indexable joint mechanism, and a head. The indexable joint mechanism may include an axially movable joint-pin and a bias member, such as an elastic or compressible spring, disposed in a transverse hole, having one or more balls. The head may include or define a splined tool head bore, wherein the joint-pin is axially inserted to couple head to handle. A prying surface or fulcrum disposed on the head may be sloped, curved, beveled, or otherwise shaped to facilitate insertion between automotive trim panels.