Cantilevered Flywheel Power Tool Sound Damping
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Solution Overview
Problem
Existing fastening tools are often inefficient, expensive, heavy, and emit excessive noise due to inadequate sound damping, leading to operator discomfort and increased size due to bulky drive systems.
Innovation Solution
Integration of sound damping members, such as sound damping tapes or powders, into the power tool design to reduce noise emission, combined with a cantilevered flywheel mechanism that allows for direct drive without clutches or transmissions, enabling smaller and lighter tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional drive systems with motors, clutches, and transmissions are used, then sufficient power can be achieved, but the tool size increases and weight increases
Solution Approach 1:
The patent removes clutches and transmissions from the drive system, extracting only the essential motor-flywheel-nosepiece chain while eliminating unnecessary intermediate components. This extraction maintains sufficient driving power while significantly reducing tool size and weight.
Solution Approach 2:
The patent replaces complex mechanical transmission systems with a direct mechanical chain drive where the motor rotor directly drives the flywheel, which directly drives the nosepiece. This substitution eliminates the need for clutches and transmissions, achieving compact dimensions while retaining adequate power.
2Ease of manufacture
If traditional power tools without sound damping are used, then manufacturing simplicity is maintained, but excessive noise is emitted causing operator discomfort
Solution Approach 1:
The patent applies sound damping material specifically to the flywheel component where vibration and noise are generated, rather than damping the entire tool. This localized application effectively reduces noise emission while maintaining manufacturing simplicity and avoiding complex overall structural changes.
Solution Approach 2:
The patent converts the harmful vibration and noise generated by the flywheel into beneficial damping effects by applying sound damping material that absorbs vibrational energy. The harmful mechanical vibrations are transformed into heat energy through the damping material, reducing noise emission while maintaining the flywheel's essential driving function.
3Reliability
If adequate protection for moving parts is provided, then reliability improves, but device complexity increases
Solution Approach 1:
The patent merges the protective function into the existing structural components. The housing and component arrangements naturally protect moving parts during operation and storage, eliminating the need for separate protective mechanisms. This integration maintains reliability while avoiding increased device complexity.
Solution Approach 2:
The patent designs the tool so that moving parts are inherently protected through their operational positions and structural arrangements. The components protect themselves through their own geometry and placement, without requiring additional protective devices or complex control systems.
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 significantly reduces noise emission, improves tool efficiency, and allows for a more compact design, enhancing user experience and manufacturing costs by providing a quieter and more efficient fastening process.
Implementation Method 1
The sound damping member can have a sound damping material. The sound damping member can be a sound damping tape. The sound damping member can have a polymer.
Implementation Method 2
The sound damping member can have a sound damping material. The sound damping member can be a sound damping tape. The sound damping member can have a polymer.
Implementation Method 3
The rotor shaft can be coupled to a flywheel. The flywheel can have a portion which is cantilevered over at least a portion of the electric motor. The flywheel can have a contact surface adapted to impart energy from the flywheel when contacted by a moveable member.
Implementation Method 4
The rotor shaft can be coupled to a flywheel. The flywheel can have a portion which is cantilevered over at least a portion of the electric motor.
Implementation Method 5
The power tool can have an electric motor having a rotor which has a rotor shaft.
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.