Powered Fastener Driver Damper for Noise Attenuation
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Solution Overview
Problem
Existing fastener drivers face power, size, and cost constraints, and often fail to effectively attenuate noise and vibration during operation.
Innovation Solution
A battery-powered fastener driver with a housing, drive mechanism, firing mechanism, and damper to reduce noise and vibration, featuring a piston, driver blade, and biasing member, along with a lifter assembly for efficient operation and a lubrication system to support smooth movement, and a magazine with a ribbed structure for controlled fastener feeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a powered fastener driver uses a compression spring to return the piston to TDC position, then the device can operate without external power, but the noise and vibration during operation increase
Solution Approach 1:
A rubber damper is introduced as an intermediary element between the compression spring and the piston. This damper absorbs and attenuates the noise and vibration generated during piston movement while still allowing the spring to perform its energy-storing and piston-returning function. The damper acts as a mediator that filters harmful effects without interfering with the core mechanical operation.
2Reliability
If the fastener driver uses a ribbed magazine structure to control fastener feeding, then feeding reliability improves, but the device complexity increases
Solution Approach 1:
The magazine is divided into multiple ribs that create separate channels or pathways for fastener feeding. This segmentation allows each rib to independently guide and control fasteners, improving feeding reliability through better alignment and control. The segmented structure achieves complex functionality through simple, repetitive geometric elements rather than a single complicated mechanism.
3Volume of moving object
If the fastener driver is designed to be compact, then portability improves, but the power output decreases
Solution Approach 1:
The design nests components within each other to maximize space utilization. The compression spring is positioned to nest around the piston, the damper is integrated into the housing structure, and the magazine ribs are arranged to optimize internal volume. This nested arrangement allows a compact overall size while maintaining sufficient space for the mechanical components to generate adequate fastener driving power.
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 provides a compact, efficient, and cost-effective fastener driver that effectively attenuates noise and vibration while ensuring reliable and controlled fastener feeding, enhancing operational performance and user experience.
Implementation Method 1
a biasing member having a first end supported within the piston and a second end supported by the head portion, the biasing member configured to move the piston and the driver blade from a top dead center position toward a bottom dead center position
Implementation Method 2
a damper positioned between the firing mechanism and the head portion of the housing, the damper configured to attenuate one or more of noise or vibration from the firing mechanism as the driver blade moves from the top dead center position toward the bottom dead center position
Implementation Method 3
a lubrication member supported on the guide member, the lubrication member configured to release a lubricant to the guide member in response to the piston reaching the top dead center position or the bottom dead center position
Data Source
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AI summary
A fastener driver includes a housing defining a head portion and a handle portion, a drive mechanism positioned within the housing, and a firing mechanism. The firing mechanism includes a piston, a driver blade attached to the piston, a biasing member having a first end supported within the piston and a second end supported by the head portion, and a damper positioned between the firing mechanism and the head portion of the housing. The damper configured to attenuate one or more of noise or vibration from the firing mechanism as the driver blade moves from the top dead center position toward the bottom dead center position.