Curved Grip Surface Structure for Secure Hold and Lower Vibration
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Solution Overview
Problem
Existing surface structures for working devices fail to provide a secure grip in various positions and effectively manage vibration transfer while maintaining aesthetic appeal.
Innovation Solution
A surface structure featuring a curved design with varying angles between base and side surfaces, allowing for multiple grip positions and reduced vibration transmission, comprising repeated base and variant structures with decreasing angles, preventing sharp edges and light reflexes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform protrusions are applied over the entire gripping surface, then the surface structure is simple and easy to manufacture, but the grip security deteriorates when fingers slip off
Solution Approach 1:
The patent applies different protrusion heights at different locations on the gripping surface. Higher protrusions are positioned where fingers naturally contact the handle, providing enhanced grip security at critical contact points while maintaining simpler structures elsewhere. This local differentiation resolves the contradiction by targeting grip enhancement where it matters most without unnecessarily complicating the entire surface structure.
2Reliability
If acupressure features are designed to fit a particular hand position, then grip security is improved for that specific position, but adaptability to different grip positions deteriorates
Solution Approach 1:
The patent creates multiple zones with different protrusion heights distributed across the gripping surface. This allows the handle to provide secure grip at various locations, enabling users to adopt different grip positions (such as palm grip, finger grip, or thumb grip) while maintaining security. The distributed high-protrusion zones act as multiple anchor points that support various hand orientations.
Solution Approach 2:
The gripping surface is segmented into multiple regions with varying protrusion characteristics. This segmentation creates distinct contact zones that can accommodate different finger placements and hand positions, thereby improving adaptability while maintaining grip security through the coordinated arrangement of these segmented zones.
3Force
If hard plastic material is used for the handle surface, then vibration transmission is improved, but grip comfort deteriorates due to lack of cushioning
Solution Approach 1:
The patent combines hard plastic material with softer, more cushioning material in a layered structure. The harder base layer provides the necessary vibration transmission and structural integrity, while the softer top layer provides cushioning for comfort during prolonged use. This local quality differentiation allows simultaneous achievement of vibration transmission and comfort.
Solution Approach 2:
The handle employs a composite structure combining hard plastic and softer plastic materials. The hard plastic provides rigidity and vibration transmission, while the softer plastic layer absorbs vibrations and provides cushioning. This composite material approach resolves the contradiction by integrating materials with complementary properties in a synergistic arrangement.
4Reliability
If larger surface area is provided for grip, then grip security is improved, but vibration transmission increases
Solution Approach 1:
The patent concentrates protrusions of high protrusion height at specific localized areas rather than distributing them uniformly across the entire surface. This creates focal points for enhanced grip security while limiting the overall surface area that transmits vibrations intensely. The localized concentration of high-protrusion zones provides grip anchoring points without requiring a large overall contact area.
Data Source
AI summary
The present invention relates to a gripping area and a surface structure for a working device. In particular, the invention relates to a surface structure for a working device, which has at least one curved surface, on which there is a first surface normal and a second surface normal, which forms an α angle, wherein the surface structure comprises a base structure, which has a base surface and at least one side surface, wherein the side surface, along with the base surface, forms a β angle, and wherein the surface normal of the base surface of the base structure is parallel to the first surface normal, wherein the surface structure further comprises a variant structure, which comprises a base surface and at least one side surface, wherein a γ angle is formed between the base surface and the side surface, wherein the variant structure is different from the base structure and wherein the surface normal of the base surface of the variant structure is parallel to the second surface normal, and the γ angle is smaller than the β angle by at least the amount of the α angle. The invention also relates to a working device with such a surface.