Fastener Striking Tool With Debris-Separating Structure
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Solution Overview
Problem
Existing electric nail guns face issues with debris and broken nails entering the internal mechanisms, leading to damage and jamming, which existing magnetic solutions are ineffective in preventing.
Innovation Solution
A fastener striking tool with a separating structure around the compression limiting position of the striker to seal the side clearance between the striker and nailing passage, preventing debris and broken nails from entering the nail gun.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a chamber is disposed in the nailing base communicating with the nailing passage to allow striker movement, then the striker can move freely during nailing process, but debris and broken nails will enter through the chamber and cause damage to internal parts
Solution Approach 1:
The chamber is segmented into a first chamber and a second chamber by a partition wall. The first chamber communicates with the nailing passage and allows striker movement, while the second chamber serves as a collection space for debris and broken nails. This segmentation enables the striker to move freely in the first chamber while preventing debris from entering the second chamber and damaging internal parts.
Solution Approach 2:
A magnet is installed in the second chamber as an intermediary component to attract and collect ferromagnetic debris and broken nails. The magnet acts as a mediator that captures harmful particles before they can enter the meshing mechanism, thereby protecting internal parts while maintaining striker movement freedom in the first chamber.
2Reliability
If a magnet is installed on the gun nozzle to absorb broken nails, then broken nails may be discharged in the next nailing process, but the magnetic force is insufficient to effectively absorb broken nails in many cases
Solution Approach 1:
The solution moves from a one-dimensional approach (magnet on gun nozzle surface) to a three-dimensional collection space (second chamber). The second chamber provides a volumetric space where debris can be collected, and the magnet within this chamber can effectively attract and hold broken nails throughout the chamber volume, significantly improving the effectiveness of broken nail absorption compared to a surface-mounted magnet.
3Productivity
If the striker directly communicates with the nailing passage, then the nailing process can proceed smoothly, but broken nails will enter the meshing mechanism through the chamber along the gun nozzle causing jam and serious damage
Solution Approach 1:
The chamber is divided into two segments: the first chamber that communicates with the nailing passage and allows smooth nailing operations, and the second chamber that collects debris. This segmentation enables continuous nailing productivity while protecting the meshing mechanism from broken nails that are trapped in the second chamber.
Solution Approach 2:
The partition wall acts as an intermediary barrier between the nailing passage and the meshing mechanism. It allows the striker to move freely in the first chamber while preventing broken nails from the second chamber from entering the meshing mechanism, thus maintaining productivity while ensuring reliability.
Data Source
AI summary
A fastener tool includes a shell, a holder, a striker and a separating structure. The shell is configured to place a compression chamber with gas storage and a cylinder body with a piston inside, and to fix the holder. The holder supports a driving wheel driven by a motor, and provided with a nailing base of which a front end is provided with a gun nozzle, so as to form a nailing passage extending to the gun nozzle from the cylinder body. The striker is provided with a first end and a second end and in driving meshing with the driving wheel. The first end is connected to the piston, and the second end extends to the nailing passage along the gun nozzle direction, so as to move back and forth between a compression limiting position and a nailing limiting position.