Tool-Free Interchangeable Fastener Guide for Jam Clearance
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Solution Overview
Problem
Existing fastener driving tools face issues with jamming due to insufficient clearance when using larger fasteners, leading to increased friction, tool temperature, and misfiring, requiring complex disassembly for replacing the front plate to accommodate different gauges.
Innovation Solution
A tool-free interchangeable fastener guide system that secures the front plate to the rear nose with a lower locking mechanism, allowing quick unlocking and removal without tools, featuring a U-shaped slot for engaging a captured pin to facilitate pivoting and replacement, enabling easier jam clearance and support for various fastener gauges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed front plate is used in the nosepiece assembly, then the tool structure is simple and reliable, but the tool cannot accommodate different fastener gauges and requires complex disassembly for jam clearance
Solution Approach 1:
The nosepiece assembly is segmented into a fixed rear nose portion and a removable front plate portion. The front plate can be detached from the rear nose through a simplified mechanism involving a pin and slot engagement, allowing users to replace the front plate to accommodate different fastener gauges without disassembling the entire tool. This segmentation enables versatility while maintaining operational simplicity.
Solution Approach 2:
The front plate is designed with dynamic characteristics, allowing it to be easily removed and reattached through a mechanical engagement system. The pin and slot configuration enables the front plate to transition between fixed and removable states, providing adaptability for different fastener types while maintaining structural integrity during operation.
2Ease of operation
If the front plate is made firmly fixed to prevent movement, then the fastener driving operation is reliable, but jam clearance becomes difficult without tool disassembly
Solution Approach 1:
The front plate is designed as a separable component that can be easily removed from the nosepiece assembly. This segmentation allows users to access the interior of the nosepiece for jam clearance by simply detaching the front plate, while the front plate remains firmly fixed during normal fastener driving operations to ensure reliability.
Solution Approach 2:
The front plate can be extracted from the nosepiece assembly through a simplified removal mechanism. This extraction capability provides easy access to the interior for clearing jams or removing fasteners, while the front plate can be reattached to restore the firm fixation needed for reliable fastener driving operations.
3Device complexity
If a simple pin engagement system is used for front plate attachment, then the device complexity is reduced, but the locking mechanism may not provide sufficient security for different fastener gauges
Solution Approach 1:
The attachment mechanism is segmented into discrete components: a pin element and a slot engagement feature. This segmentation allows for a simple yet effective locking system that provides sufficient security for various fastener gauges while maintaining minimal device complexity. The pin and slot configuration ensures reliable attachment without requiring complex multi-component fastening systems.
Data Source
AI summary
A tool free interchangeable fastener guide (26) is provided for use with a fastener tool (20) having a nosepiece (18) with a captured transverse pin (84) and a back plate. The guide (26) includes a front plate (30) having a tool engaging end (36) and an opposite fastener outlet end (38), an outer surface (40) and an inner surface. A butt plate (32) is pivotably joined to the outer surface (40), and a spring clip (34) has a first end (54) pivotably secured to the butt plate (32) and a second end (58) configured for attachment to the fastener tool (10). The tool engaging end (36) has an open slot (92) constructed and arranged for pivotally engaging the captured pin (84), the front plate (30) being disengageable from the captured pin (84) without the use of tools.