Nailer Pre-Positioning Magazine Alignment Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fastening tools, such as nailers and staplers, face difficulties in aligning fasteners with workpieces, particularly with metal connectors or steel straps that have pre-existing holes, due to the lack of flexibility and precision in aligning the nosepiece or contact trip with the intended hole.
Innovation Solution
A fastening tool design featuring a housing with a magazine that stores fasteners, a stabilizing surface, and a driving mechanism, allowing for precise alignment and engagement of fasteners with workpieces through a firing slot and a trigger assembly that activates the driving mechanism upon user input, ensuring accurate and repeatable fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional fastening tool is used without a pre-positioning mechanism, then the device complexity is low, but the alignment precision between the nosepiece and the workpiece hole is poor
Solution Approach 1:
The patent applies the preliminary action principle by incorporating a pre-positioning mechanism that aligns the fastener with the workpiece hole before the actual fastening operation. The nosepiece includes a pre-positioning surface that contacts the fastener head, and a positioning mechanism with a positioning pin or guide that guides the fastener into the correct position relative to the hole in the metal connector or steel strap. This preliminary alignment action ensures precise positioning before the driving mechanism engages, resolving the contradiction by adding complexity only where needed to achieve the alignment precision improvement.
2Adaptability or versatility
If the magazine is fixed relative to the housing, then the device complexity is low, but the adaptability for different fastener positions and workpiece configurations is limited
Solution Approach 1:
The patent applies the dynamics principle by making the magazine movable relative to the housing rather than fixed. The magazine can move along a guide rail or track, allowing it to adjust its position to accommodate different fastener positions, workpiece configurations, and hole locations. This dynamic adjustment capability enables the same device to handle various applications with metal connectors and steel straps without requiring multiple specialized tools, thereby improving adaptability while managing complexity through a simple movable mechanism.
3Manufacturing precision
If the stabilizing surface is added to guide the fastener head, then the manufacturing precision of fastener engagement is improved, but the device complexity increases
Solution Approach 1:
The patent applies the intermediary principle by introducing a stabilizing surface as a mediator between the fastener head and the driving mechanism. The stabilizing surface is a guide surface or positioning surface that contacts the fastener head during the engagement process, ensuring proper alignment and precise engagement with the hole. This intermediary surface simplifies the overall system by providing a simple geometric solution for precision engagement rather than requiring complex positioning mechanisms, actuators, or sensors. The stabilizing surface works in conjunction with the pre-positioning mechanism to achieve the desired precision with minimal added complexity.
Data Source
AI summary
A fastening tool can include a housing comprising a nosepiece and a handle. The handle can define a first longitudinal axis. A magazine can be connected to the housing for storing a fastener. The magazine can define a second longitudinal axis that is substantially parallel to the first longitudinal axis and a fastener channel for receiving a fastener. The magazine can be movable relative to the housing between an alignment position wherein the distal tip of the fastener engages a workpiece and an activation position wherein the magazine moves toward the housing upon movement of the handle toward the workpiece. A driving mechanism can be disposed within the housing for driving the fastener into a workpiece. A trigger assembly can be coupled to the housing for activating the driving mechanism upon actuation of a primary trigger and movement of the magazine into the activation position.