Swinging Brake Mechanism for Accurate Electric Nail Gun Striker Reset
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Solution Overview
Problem
Existing flywheel-type electric nail guns face issues with striker resetting accuracy and stability, particularly in models where the striker only moves linearly, lacking effective braking mechanisms to prevent poor resetting and unexpected secondary nailing.
Innovation Solution
A swinging brake mechanism is introduced, comprising a pendulum rod and an electromagnet-driven swing seat, which constrains and resets the striker to a standard position using elastic components and a stopping part, allowing the striker to accurately stop and release for nailing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a swing type stopping component is used to brake the striker for resetting, then the striker resetting accuracy is improved, but the assembly accuracy requirement increases and production cost increases
Solution Approach 1:
Instead of making the striker swing to engage with the flywheel (first type design), this patent inverts the approach by making the flywheel swing to engage with the striker (second type design). The striker remains linearly movable only, while the flywheel is configured to swing between idle and transmission positions. This inversion simplifies the striker structure and reduces assembly accuracy requirements while maintaining effective braking control through the swinging brake component.
Solution Approach 2:
The stopping component is divided into a fixed part (brake component) and a movable part (swing seat with flywheel). The brake component remains fixed on the gun frame while the flywheel swings on the swing seat. This segmentation allows the braking function to be separated from the striker, enabling independent optimization of each component and reducing overall assembly complexity.
2Adaptability or versatility
If the striker assumes both swing and linear movement dynamic variables, then the striker can capture kinetic energy and perform nailing, but the assembly accuracy requirement for the brake component increases
Solution Approach 1:
The patent inverts the traditional design by making the flywheel swing instead of the striker swinging. The striker is simplified to only linear movement along the nailing axial direction, while the flywheel performs the swinging motion to engage and disengage from the striker. This maintains the necessary dynamic functionality while significantly reducing the complexity and assembly accuracy requirements.
Solution Approach 2:
The system uses dynamic engagement between the swinging flywheel and the linearly moving striker. The flywheel swings between idle and transmission positions, dynamically controlling the engagement timing. This dynamic mechanism allows the striker to maintain simple linear movement while still achieving the complex function of capturing kinetic energy and performing nailing operations.
3Ease of operation
If a swing type stopping component is used to release the striker for nailing, then the nailing function is enabled, but the safety sliding bar mechanism increases friction and reduces braking effect over time
Solution Approach 1:
The patent extracts the braking function from the safety sliding bar mechanism and places it on a dedicated brake component that is independently actuated by the swing seat. The safety sliding bar is removed from the braking system, eliminating the friction and wear issues. The brake component is directly engaged or disengaged by the swinging flywheel mechanism, ensuring consistent braking effect throughout the tool's operational life.
Solution Approach 2:
The swing seat acts as an intermediary between the electromagnet and the brake component. The electromagnet drives the swing seat to swing, which in turn controls the flywheel's engagement with the striker. This intermediary mechanism provides precise control over the braking and release functions without the friction problems of direct contact between the safety sliding bar and brake components.
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 swinging brake mechanism ensures precise striker resetting, preventing secondary nailing and maintaining braking effectiveness over time by eliminating the need for a safety sliding bar, thus enhancing structural accuracy and reducing maintenance costs.
Implementation Method 1
The gun frame is fixed with an electromagnet... the electromagnet can drive the swing seat to swing so that the power flywheel can swing from an idle position to a transmission position
Implementation Method 2
an elastic component stores elastic potential energy, and after the striker shoots the nail, the elastic potential energy is immediately released to drive the striker to reset
Implementation Method 3
a rotary actuator (or motor) drives a power flywheel to generate rotational kinetic energy... transmitting the rotational kinetic energy to the striker to generate linear momentum for nailing
Implementation Method 4
the braking end can be pushed upon the stopping part when the power flywheel is at the idle position so as to constrain the resetting striker to stop at the standard position
Data Source
AI summary
The invention discloses a swinging brake of electric nail gun for restraining a striker to return to a standard position after shooting the nail. The swinging brake is elastically pivoted on a swing seat of a gun frame, and is extended to form a braking end. The braking end can butt a stopping part on the gun frame when a power flywheel driven by the swing seat is at an idle position, so as to restrain the striker that has returned to the standard position. The braking end can also be driven by the swing seat to leave the stopping part when the power flywheel swings to a transmission position, so that the striker can be released from the standard position to slide along the nailing axial direction to shoot the nail. In this way, the striker in an electric nail gun configured with a swinging power flywheel is improved to accurately return to the standard position after nailing.