Ergonomic Handle with Finger Grooves for Secure Grip
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Solution Overview
Problem
Conventional handles for personal care tools like tongue scrapers, toothbrushes, and dental flossers are typically straight and lack ergonomic features, making it difficult to securely grip these devices with the fingers, leading to insecure handling during use.
Innovation Solution
An ergonomic handle with an arcuate shape featuring concave-shaped grooves and convex-shaped protrusions on the top surface and a concave groove and two convex protrusions on the bottom surface, allowing for secure grasping by accommodating different fingers of the hand, enhancing grip security for both right- and left-handed users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional straight handles are used, then the device structure is simple, but the grip security is poor
Solution Approach 1:
The handle is designed with an arcuate shape instead of a straight configuration, allowing the fingers to naturally wrap around and grip the handle more securely. This curvature enables better ergonomic alignment with the hand's natural gripping posture, improving grip security without adding complex mechanical components.
Solution Approach 2:
The handle surface is segmented into multiple cavities and protrusions that correspond to different fingers. These segmented features allow each finger to be positioned in a specific cavity or on a specific protrusion, distributing the gripping force across multiple contact points and significantly improving overall grip security.
2Ease of operation
If conventional straight handles are used, then the manufacturing process is simple, but the ease of operation is poor
Solution Approach 1:
The arcuate shape of the handle is achieved through standard molding or shaping processes that are well-established in manufacturing. While the shape is curved, the manufacturing method remains relatively simple, using conventional techniques to form the curved geometry without requiring complex multi-step fabrication processes.
Solution Approach 2:
The cavities and protrusions are strategically positioned at specific locations on the handle surface to match finger placement. This local differentiation of the handle surface provides enhanced grip comfort where needed, while the rest of the handle maintains a simple structure that is easy to manufacture.
3Adaptability or versatility
If handles without finger accommodations are used, then the device design is simple, but the adaptability is poor
Solution Approach 1:
The handle design with multiple cavities and protrusions can accommodate different hand sizes and gripping preferences, making it universally applicable to various users. The same handle structure serves multiple functions by providing specific positioning for different fingers, allowing both right-handed and left-handed users to grip the device effectively.
Solution Approach 2:
By dividing the handle surface into multiple distinct cavities and protrusions, the design allows for flexible finger placement options. Users can position their fingers in different combinations depending on their preference or hand size, providing adaptability without requiring multiple different handle designs.
Data Source
AI summary
An ergonomic handle to be used in conjunction with a hand-operated personal use tool. A unique feature of the ergonomic handle is a series of concave-shaped grooves and convex-shaped protrusions on the top surface and one concave-shaped groove and two convex-shaped protrusions on the bottom surface. The ergonomic handle has an arcuate shape to facilitate a secure grasping of the handle by the fingers of one handle.