Impact Device for Electric Nail Gun Flywheel Energy Management
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Solution Overview
Problem
Conventional electric nail guns experience inefficiencies and excessive wear due to counteracting rotational and kinetic energies during nail striking, leading to increased power consumption and potential overheating, as the flywheel's rotational energy is often cancelled out by the impact member's return kinetic energy, necessitating significant motor energy input to regain speed for subsequent strikes.
Innovation Solution
The impact device features a swing arm unit, a track unit with a guiding track, and an impact unit that allows the impact member to be detached from the flywheel during its return movement, preventing interference and ensuring the flywheel's continuous rotation, thereby optimizing energy usage and reducing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flywheel's rotational energy is greater than the kinetic energy of the impact member, then the impact member is driven to move in the striking direction again, but this results in inefficient power consumption and potential overheating of the motor unit
Solution Approach 1:
The patent segments the interaction between the impact member and flywheel into distinct phases: contact phase (when impact member touches flywheel), striking phase (when impact member moves forward), and return phase (when impact member returns to initial position). During the return phase, the guiding track separates the impact member from the flywheel, preventing unwanted re-acceleration and energy waste.
Solution Approach 2:
The guiding track acts as an intermediary mechanism that controls the interaction between the impact member and flywheel. It guides the impact member's movement trajectory and selectively engages or disengages the impact member from the flywheel based on the operational phase, thereby preventing energy waste during the return stroke.
2Device complexity
If the flywheel and impact member are in continuous contact during return movement, then the mechanism is simple, but this causes excessive wear and tear on both components
Solution Approach 1:
The patent implements dynamic engagement and disengagement between the impact member and flywheel through the guiding track mechanism. The impact member is dynamically separated from the flywheel during the return phase and only engages during the striking phase, reducing continuous friction and wear while maintaining operational simplicity.
3Ease of operation
If the rotational energy of the flywheel is cancelled out by the kinetic energy of the impact member, then the impact member returns to the pre-firing position, but this requires significant motor energy input to regain speed
Solution Approach 1:
The patent extracts the flywheel's rotational energy utilization to only the necessary striking phase, preventing energy cancellation during the return phase. The guiding track separates the impact member from the flywheel during return movement, allowing the impact member to coast back without opposing the flywheel's rotation, thus preserving motor energy.
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
This configuration enhances the efficiency of nail striking operations, reduces energy wastage, and prolongs the service life of the motor unit by preventing flywheel reversal and minimizing overheating, resulting in a more efficient and durable electric nail gun.
Implementation Method 1
the guiding track being movable resiliently relative to the swing arm unit between a front position and a rear position
Implementation Method 2
a flywheel that is rotatably mounted to the supporting frame... rotation of the flywheel drives the impact unit to move in the striking direction
Data Source
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AI summary
An impact device is adapted to be mounted to an electric nail gun (2) that includes a flywheel (22), and includes a swing arm unit (3), a track unit (4) and an impact unit (5) . The swing arm unit (3) is adapted to be pivoted toward or away from the flywheel (22). The track unit (4) includes a guiding track (41) movably connected to the swing arm unit (3). The impact unit (5) is connected to the guiding track (41), and is movable relative to the guiding track (41) in a striking direction (Y1) and a return direction (Y2) that are opposite to each other. The guiding track (41) is movable resiliently relative to the swing arm unit (3) between a front position, where the impact unit (5) is adapted to contact the flywheel (22), and a rear position, where the impact unit (5) is adapted to be spaced apart from the flywheel (22).