Flywheel Electric Nail Gun With Strike Prevention Locking
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Solution Overview
Problem
Existing electric nail guns experience excessive kinetic energy loss and unsmooth movement due to simultaneous contact of the driver with the flywheel and pressing roller during nail striking, leading to potential accidental discharges.
Innovation Solution
The electric nail gun incorporates a frame unit, power unit, swing arm unit, impact unit, driving unit, and accidental discharge prevention unit, featuring a swingable strike prevention member that locks the impact member in a locked position to prevent accidental discharges and allows smooth nail striking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the driver contacts the flywheel and pressing roller simultaneously during nail striking, then the nail can be struck, but excessive kinetic energy is lost and movement becomes unsmooth
Solution Approach 1:
The patent divides the driving mechanism into separate functional components: the driver is separated from direct simultaneous contact with both the flywheel and pressing roller. Instead, the driver contacts the pressing roller first, which then transfers energy through a controlled sequence, avoiding the energy loss of simultaneous contact with both components.
Solution Approach 2:
The pressing roller is positioned to contact the driver before the flywheel does. This preliminary contact allows the driver to be gradually accelerated and positioned correctly before receiving the main kinetic energy transfer from the flywheel, ensuring smooth movement and reducing energy loss.
2Reliability
If the blocking member locks the driver after return to initial position, then accidental discharges are prevented, but the driver movement is restricted
Solution Approach 1:
The blocking member is designed as a dynamic component that automatically adjusts its position based on the driver's movement state. It locks the driver only when the driver has fully returned to its initial position, and releases automatically when the driver needs to move forward for the next striking operation, thus preventing accidental discharges while maintaining operational freedom.
Solution Approach 2:
The blocking member acts as a feedback mechanism that monitors the driver's position. When the driver returns to the initial position, the blocking member engages to prevent backward movement. When the trigger is pulled and the driver moves forward, the blocking member detects this movement and disengages, allowing the cycle to continue safely.
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 effectively prevents accidental nail discharges by limiting the impact member's movement during unexpected contact, ensuring safety and smooth operation by separating the strike prevention member from the impact member during nail striking.
Implementation Method 1
a flywheel that is rotatably connected to the frame unit and that is driven by electric power
Implementation Method 2
a returning component that includes an elastic component that is biased in the returning direction
Data Source
AI summary
An electric nail gun includes a frame unit, a flywheel that is rotatably connected to the frame unit, a swing arm unit, an impact member, a driving member that is swingably connected to the frame unit, and a strike prevention member that is swingably connected to the frame unit. The swing arm unit is operable to urge the impact member to be in contact with the flywheel. The impact member is urged by rotation of the flywheel to strike a nail. The driving member is operable to swing relative to the swing arm unit between an initial position and a trigger position, and drives the swing arm unit to move toward the flywheel when the driving member swings from the initial position to the trigger position. The strike prevention member is driven by the driving member to swing relative to the impact member and the driving member.