Power Tool Hammer Assembly With Spring-Isolated Impact Head
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Solution Overview
Problem
Operators face the challenge of manually striking fasteners with power tools like impact drivers, which can lead to damage of the tool, as there is no integrated hammer function.
Innovation Solution
A hammer assembly is designed to be attached to the backside of power tools, incorporating a distal engagement portion with energy storage chambers and a head portion, allowing the tool to function as a multifunctional hammer without damaging the tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If operators manually strike fasteners using the butt end of the power tool, then hammering function is provided, but damage risk to the power tool increases
Solution Approach 1:
The hammer assembly is separated from the power tool body, with only the distal engagement portion attaching to the tool while the head portion and energy storage device remain isolated. This segmentation allows hammering function to be added without exposing the power tool's internal components to damage risk.
Solution Approach 2:
The distal engagement portion acts as an intermediary element between the power tool and the head portion. It transmits minimal reactive forces to the power tool while enabling the hammering function through the energy storage device mechanism.
2Adaptability or versatility
If a hammer assembly with energy storage device is attached to the power tool, then hammering function is enabled, but device complexity increases
Solution Approach 1:
The hammer assembly is designed as a self-contained multifunctional unit that attaches to the power tool. The distal engagement portion with embedded protrusions can attach to various power tool backsides, while the energy storage device provides hammering action, making the assembly universally applicable to different power tools.
Solution Approach 2:
The energy storage device is nested within chambers formed in the distal engagement portion. The protrusions are embedded within cavities in the engagement portion, creating a compact nested structure that minimizes overall complexity while maintaining functionality.
3Object-affected harmful factors
If the distal engagement portion is made of elastomeric material, then shock absorption is improved, but manufacturing precision requirements increase
Solution Approach 1:
The distal engagement portion is made of elastomeric material, changing the physical parameter of the material from rigid to flexible. This allows the material to absorb shock through deformation while the embedded protrusions maintain precise mechanical attachment through the elastomeric matrix.
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 enables power tools to perform hammering functions without risking damage to the tool, enhancing usability and reducing the need for separate hammers during construction tasks.
Implementation Method 1
one or more chambers of the distal engagement portion housing an energy storage device so that a portion of a compressive force applied to a second side of the distal engagement portion is absorbed by the energy storage device
Data Source
AI summary
A hammer assembly for a power tool. The hammer assembly provides a first, proximal engagement portion couplable directly to a backside of the power. A second, distal engagement portion is directly connected to the first engagement portion. A head portion is directly connected to the second engagement portion. The second engagement portion provides one or more chambers, each chamber housing a spring for storing energy imparted by compressive forces against the head portion. Each spring directly interconnecting the first and second engagement portions through an open side of the chamber facing the first engagement portion. There is a gap between the first and second engagement portions, between their respective distal and proximal surface, which is spanned by the spring, enabling the latter to deflect before said surfaces contact under compressive loading.