Rotatable Asymmetric Grip for Portable Power Tools
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Solution Overview
Problem
Existing portable power tools with orbital and rotational capabilities lack ergonomic design features that enhance user operability, particularly in adjusting grip positions for different working angles and orientations.
Innovation Solution
A portable power tool design featuring a grip that can be rotated between multiple angles, allowing the user to switch between two distinct surface positions, with one surface positioned at the top and the other at the bottom, and vice versa, along with a projection on one surface for easier finger engagement, enhancing grip stability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the grip is fixed at a single position, then the device structure is simple, but the operability for different working angles is poor
Solution Approach 1:
The grip is designed to be rotatable around a rotating axis, allowing it to dynamically change its angular position relative to the housing. This enables the user to adjust the grip orientation according to different working angles and operational requirements, transforming a static structure into a dynamic one that adapts to various usage scenarios.
Solution Approach 2:
The grip structure is designed to serve multiple functions: it provides both a fixed mounting position and rotatable adjustment capability. The same grip assembly can be mounted at different angles (first angle and second angle) to accommodate various working conditions, making the device versatile for different operational requirements without requiring multiple separate components.
2Ease of operation
If the grip surface is symmetric, then the manufacturing is simple, but the grip stability for different orientations is reduced
Solution Approach 1:
The grip portion is designed with an asymmetric shape relative to the rotating axis, featuring a first surface and a second surface with different characteristics. This asymmetry allows the grip to provide optimized contact surfaces for different orientations, improving grip stability and user comfort when held at different angles, while the asymmetric features are integrated into the manufacturing process.
3Adaptability or versatility
If the grip is non-rotatable, then the structural complexity is low, but the adaptability to different working aspects is poor
Solution Approach 1:
The grip is designed to be rotatable around a rotating axis, allowing it to dynamically change its angular position relative to the housing. This enables the user to adjust the grip orientation according to different working angles and operational requirements, transforming a static structure into a dynamic one that adapts to various usage scenarios.
4Adaptability or versatility
If the grip surfaces are identical, then the manufacturing is simple, but the ergonomic adjustment capability is reduced
Solution Approach 1:
The grip portion is designed with an asymmetric shape relative to the rotating axis, featuring a first surface and a second surface with different characteristics. This asymmetry allows the grip to provide optimized contact surfaces for different orientations, improving grip stability and user comfort when held at different angles, while the asymmetric features are integrated into the manufacturing process.
Data Source
AI summary
A portable power tool includes a tool accessory, drive mechanism, housing and grip having a rotating axis. The grip includes grip portion having a first face and a second face. The grip portion is formed in a rotation asymmetric shape to the rotating axis. The grip is attachable to the housing with respect to a rotating angle around the rotating axis at a first angle and a second angle. When the grip is viewed in the rotating axis extending direction, the position of the first surface and the position of the second surface in the circumferential direction around the rotating axis in a case that the rotating angle is at the first angle are different from the position of the first surface and the position of the second surface in the circumferential direction around the rotating axis in a case that the rotating angle is at the second angle.