Flexible Handle Sheath for Insulated Dust-Protected Tool Grip
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Solution Overview
Problem
Hand-held tools face risks of foreign object penetration and electrical hazards in dusty or high-voltage environments, with existing protective measures inadequate for both protection and ergonomic handling.
Innovation Solution
A flexible, tubular sheath part made of thermoplastic elastomer or rubber, covering the handle region and actuating switch, featuring a circumferential rib for anti-slip protection and electrical insulation, with optional one-piece protrusions for secure attachment, ensuring complete coverage and protection against dirt, moisture, and electrical hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective sheath is provided for the handle region, then protection against dirt and moisture is improved, but ergonomic handling may be compromised
Solution Approach 1:
The patent applies a flexible sheath part made of elastomeric material that covers the handle region and actuating switch. The flexible nature of the sheath allows it to conform to the hand's grip while providing protective coverage against dirt and moisture, thus maintaining ergonomic handling characteristics.
Solution Approach 2:
The sheath part is designed with differentiated regions: a first region covering the handle region and a second region covering the actuating switch. This local differentiation allows each area to be optimized for its specific function while maintaining overall protection and ergonomics.
2Reliability
If the sheath part covers the actuating switch, then electrical insulation is improved, but the actuation mechanism may be affected
Solution Approach 1:
The sheath part is made of flexible elastomeric material that can be compressed and deformed. When the user actuates the switch, the flexible sheath deforms accordingly, allowing the actuation mechanism to function properly while maintaining electrical insulation during normal use.
Solution Approach 2:
The sheath part's flexibility allows it to dynamically adapt to the actuation action. The material can compress and return to its original shape, enabling the switch to be actuated through the sheath without compromising the electrical insulation provided by the sheath covering.
3Ease of operation
If a rib is added for anti-slip protection, then grip stability is improved, but device complexity increases
Solution Approach 1:
The rib is integrated directly into the flexible sheath part as a protruding feature. This integration allows the rib to provide anti-slip protection through its protruding structure while the flexible material maintains the overall simplicity of the sheath part design without requiring separate complex components.
Data Source
AI summary
A hand-held tool having an electromotive actuation is provided. The hand-held tool has a handle region and a working head. In the handle region, an actuating switch is provided, which is arranged for the application of manual force. The handle region including the actuating switch is sheathed with a flexible sheath part, which, starting from an end of the handle region that is facing away from the working head to beyond the handle region is formed without an opening. A sheath part for a hand-held tool is also provided.