Compact Jigsaw with 3.6V Battery and Segmented Housing
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Solution Overview
Problem
Existing handheld power tools are often bulky and intimidating, limiting their use among women and inexperienced users due to their size and complexity.
Innovation Solution
A compact battery-operated jigsaw design featuring a rechargeable battery with a nominal voltage of 3.6V, an electronically commutated electric motor, and a ergonomic handle, allowing for efficient space utilization and ease of handling, with optional features like a second handle and annular lighting for improved usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional power tools are designed with larger components and higher power motors, then cutting performance and durability are improved, but size and weight increase making them intimidating and difficult to handle
Solution Approach 1:
The patent changes the voltage parameter from traditional high voltage to a specific low voltage range (2V-7.5V, preferably 3.6V), which enables the use of smaller, less intimidating tool dimensions while maintaining adequate cutting performance for the target user group
Solution Approach 2:
The tool is divided into two housing parts with the battery integrated into the first housing part, allowing for a compact, balanced design that improves handleability while distributing components efficiently
2Ease of operation
If the battery voltage is reduced to make the tool more compact and accessible to smaller users, then ease of handling is improved, but cutting power and performance may be compromised
Solution Approach 1:
The patent identifies and tests specific voltage parameters (2V-7.5V, particularly 3.6V) that provide the optimal balance between compact size for ease of handling and sufficient cutting power, resolving the contradiction through precise parameter optimization
Solution Approach 2:
The electronically commutated motor provides dynamic speed and power control, allowing the tool to deliver adequate cutting power when needed while maintaining a compact design that is easy to handle
3Adaptability or versatility
If the handle size is reduced to accommodate smaller hands, then accessibility to women and inexperienced users is improved, but the structural integrity and component mounting capability may be reduced
Solution Approach 1:
Dividing the housing into two parts with the battery integrated into the first part allows the handle to be compact for small hands while maintaining sufficient structural integrity through proper component distribution and housing design
Solution Approach 2:
The battery integration in the first housing part adds dimensional balance to the compact handle design, distributing weight and structural load in a way that maintains integrity without increasing handle size
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 design results in a compact, user-friendly power tool that is accessible to a wider range of users, including smaller individuals, while maintaining high performance and operational efficiency.
Implementation Method 1
at least one rechargeable battery (14) is provided as an energy source for the battery-operated hand tool (10)
Implementation Method 2
an electronically commutated electric motor (18) which is arranged in a second housing part (26)
Data Source
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AI summary
The invention relates to a battery-operated hand-held power tool (10), in particular a jigsaw (10), with at least one first housing part (12) that can accommodate at least one rechargeable battery (14). It is proposed that the rechargeable battery (14) comprises at least one battery cell (14) which in particular has a voltage of 3.6 V.