Power Tool Sound Damping via Flywheel Integration
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Solution Overview
Problem
Existing fastening tools are often inefficient, expensive, heavy, and emit excessive noise due to inadequate design and sound damping mechanisms, making them inconvenient and ineffective for various applications.
Innovation Solution
The integration of sound damping members, such as sound damping tapes or powders, into the design of power tools like nailers and impact drivers, which include a cantilevered flywheel with a rotor shaft coupled to a flywheel, to absorb vibrations and reduce noise emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional drive systems with motors, rotors, clutches, and transmissions are used, then sufficient power can be achieved, but the tool becomes bulky and complex
Solution Approach 1:
The patent extracts and eliminates intermediate transmission components (clutches, transmissions) from the traditional motor-drive system, directly coupling the motor rotor to the flywheel to achieve a simplified direct-drive mechanism that maintains power while reducing complexity
Solution Approach 2:
The patent merges the motor rotor and flywheel into a single integrated assembly where the rotor shaft directly drives the flywheel, combining previously separate components (motor, clutch, transmission, flywheel) into a unified direct-drive system
2Device complexity
If traditional power tools without sound damping are used, then structural simplicity is maintained, but excessive noise and vibration are emitted
Solution Approach 1:
The patent applies sound damping material to the flywheel, converting the harmful vibrations and noise generated by the fastening mechanism into beneficial dampened energy that reduces acoustic emission and improves user comfort
Solution Approach 2:
The patent applies sound damping material specifically to the flywheel surface that contacts the driver blade, targeting the local source of vibration and noise generation rather than requiring comprehensive damping throughout the entire tool structure
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 solution results in more efficient, lighter, and quieter power tools with improved sound characteristics, enabling better performance and user experience by reducing noise levels and enhancing operational efficiency.
Implementation Method 1
The sound damping member can have a sound damping material. In an embodiment, the sound damping member vibration absorption member
Data Source
AI summary
A power tool having one or more sound damping members which reduce sound and/or vibration from one or more parts of a power tool. The sound damping member can reduce sound and/or vibration from static or dynamic parts of a power tool. The sound damping member can reduce noise and/or vibration from one or more rotating or moving parts of a power tool and its housing or internal structure. Methods, means, controls, systems and practices for reducing or eliminating undesired sound from a power tool are disclosed.