Power Tool Handle Vibration Damping via Elastic Grip Mount
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Solution Overview
Problem
Existing power tool handles fail to effectively prevent vibration transmission and ensure secure grip during operation, leading to potential damage and loss of control.
Innovation Solution
A handle design featuring a grip part firmly connected to a mounting part via an elastic vibration-damping element, with a movable retaining element, such as a flexible wire rope or band, that applies compressive stress to the elastic element, preventing vibration transmission and ensuring secure attachment even if the elastic element is damaged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid retaining element is used to secure the grip part, then the connection strength is improved, but vibration transmission increases
Solution Approach 1:
The patent employs a flexible retaining element (such as a wire rope or band) instead of a rigid connector. This flexible element can accommodate vibrations and movements while maintaining the secure connection between the grip part and mounting part, thereby preventing vibration transmission while preserving connection strength.
Solution Approach 2:
The retaining element is constructed from composite materials that combine high tensile strength with flexibility. This allows the element to withstand mechanical loads and secure the grip part firmly while simultaneously dampening vibrations and preventing their transmission to the housing.
2Device complexity
If the retaining element is integrated concealed in the elastic element, then the design simplicity is improved, but accessibility for replacement deteriorates
Solution Approach 1:
The retaining element is designed as a separate, modular component that can be independently accessed and replaced. The element is integrated into the elastic element's structure in a way that allows for easy disassembly and reassembly, enabling users to replace the retaining element without replacing the entire handle assembly.
Solution Approach 2:
The patent incorporates an intermediary access mechanism that allows the retaining element to be concealed during normal operation yet accessible when needed for replacement. This could involve removable covers, snap-fit components, or other intermediary structures that provide both aesthetic integration and practical accessibility.
3Force
If the retaining element is subjected to high compressive stresses, then the loadability of the elastic element is improved, but the risk of breakage increases
Solution Approach 1:
The retaining element is designed with dynamic characteristics that allow it to flex and deform under high compressive stresses rather than failing catastrophically. This dynamic behavior enables the element to withstand high loads while maintaining reliability, as it can absorb and redistribute stress rather than concentrating it at weak points.
Solution Approach 2:
The patent employs parameter changes in the retaining element's material properties or geometric configuration to optimize its performance under compressive stresses. This could involve using materials with specific stress-strain characteristics, optimizing the element's cross-sectional area, or designing features that redistribute stress to prevent breakage while maintaining high loadability.
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 effectively prevents vibration transmission and ensures a secure grip, enhancing the loadability and longevity of the handle by distributing stress and protecting the elastic element from damage, while allowing for easy installation and replacement of the retaining element.
Implementation Method 1
an elastic, vibration-damping element (14), by means of which the grip part (12) is connected in a firm manner to a mounting part (16)
Implementation Method 2
If the retaining element, in the installed state, is subjected to compressive stresses, and the elastic element is subjected to tensile stresses
Data Source
AI summary
The invention is based on a power tool with at least one handle (10, 26, 50, 62, 104) that comprises at least one grip part (12, 72, 106) that is firmly connected to a mounting part (16, 70, 110) via at least one elastic, vibration-damping element (14, 24, 52, 108), via which the grip part (12, 72, 106) is affixable to a housing (60).It is proposed that the connection between the grip part (12, 72, 106) and the mounting part (16, 70, 110) is secured by means of the elastic element (14, 24, 52, 108) via at least one movable retaining element (20, 22, 28, 64, 112).