Gas Spring Fastener Driver With Stable Nosepiece Guidance
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Solution Overview
Problem
Existing fastener drivers are inefficient in terms of length and stability, particularly when driving fasteners into a workpiece, as they often require external air pressure sources and result in marred work surfaces due to driver blade projections.
Innovation Solution
A gas spring-powered fastener driver with a driver blade and nosepiece assembly that provides lateral stability to fasteners through guide ribs and grooves, reducing the overall length and minimizing contact with the work surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If existing fastener drivers are used, then fastener driving function is achieved, but the tool length becomes excessive and work surface is marred
Solution Approach 1:
The driver blade is designed with a curved trajectory path instead of linear motion, allowing the fastener to be driven at an angle relative to the work surface. This dimensional change in the motion path enables the driver blade to clear the work surface after fastener insertion, preventing marring while maintaining effective fastener driving capability.
Solution Approach 2:
The fastener driver employs a dynamic curved trajectory mechanism where the driver blade follows a predetermined curved path during operation. This dynamic motion allows the blade to approach the work surface at an optimal angle, insert the fastener, and then retract along the curve to clear the surface, eliminating the need for excessive tool length projection.
2Ease of operation
If driver blade projections are used for fastener driving, then fastener insertion is achieved, but work surface is marred
Solution Approach 1:
The driver blade projections are utilized along a curved trajectory rather than in direct linear contact with the work surface. This allows the projections to effectively engage and drive the fastener while the curved path ensures the blade clears the work surface during retraction, preventing marring.
Solution Approach 2:
Instead of the driver blade retracting linearly along the same path it approached, the blade follows a curved inversion path that clears the work surface. This inverted motion strategy allows the projections to perform their fastener driving function while avoiding contact with the work surface during withdrawal.
3Power
If external air pressure sources are used, then fastener driving power is achieved, but device complexity increases
Solution Approach 1:
The fastener driver incorporates an integrated gas spring mechanism that generates the necessary driving power internally. The gas spring expands to propel the driver blade along its curved trajectory, eliminating the need for external air pressure sources or complex pneumatic systems while maintaining sufficient power for fastener driving.
Solution Approach 2:
The device utilizes a gas spring, a pneumatic element, to generate driving force. The gas spring expands under controlled conditions to provide the necessary power for fastener insertion, offering a compact and self-contained power source that reduces overall device complexity compared to external pneumatic systems.
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 enhances fastener driving efficiency and stability, reducing the overall length of the tool while minimizing surface indentations, thus improving operational performance and user experience.
Implementation Method 1
A gas spring-powered fastener driver with a driver blade and nosepiece assembly
Data Source
AI summary
A fastener driver includes a housing, a cylinder disposed within the housing, a piston positioned and moveable within the cylinder, and a driver blade. The driver blade includes a body defining a first end having an aperture defined therein, a second end opposite the first end, and a plurality of teeth between the first and second ends. The aperture is sized to receive a fastener to attach the driver blade to the piston. The driver blade is moveable with the piston from a first position toward a second position along a longitudinal axis during a fastener driving operation. A nosepiece at least partially defining a fastener driving track through which fasteners are driven. A total length of the fastener driver as measured between a distal end of the nosepiece and a distal end of the cylinder is less than 11.4 inches (289.6 mm).