Electric Power Tool Hook With Slip-Off Preventing Ring
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Solution Overview
Problem
Existing hook designs for electric power tools often become unfixable when the band or screw loosens, causing the tool to fall from a belt or carabiner, and waterproof covers can obstruct the attachment portion, preventing secure fixation.
Innovation Solution
A ring-shaped slip-off preventing portion is integrated with the hook, allowing loose insertion around the handle when the battery pack is not attached, and can be attached directly to the handle or through a waterproof cover, ensuring the hook remains secured even if it comes off, and a connecting mechanism between divided waterproof covers enhances attachment and waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the hook is fixed to the handle using a band, then the hook can be attached to almost all kinds of rechargeable electric power tools regardless of their shapes, but the band can be loosened and the hook becomes unfixable
Solution Approach 1:
The band is designed with elastic properties allowing it to dynamically adapt to different handle shapes while maintaining constant attachment force. The elasticity enables the band to accommodate various geometries without loosening, solving both the adaptability and reliability requirements simultaneously.
Solution Approach 2:
The attachment mechanism uses adjustable parameters including band tension, elastic modulus, and geometric configuration to optimize both versatility across different tool shapes and reliable securement. By changing these parameters, the same band design can adapt to various handles while preventing loosening.
2Reliability
If the water proof cover is attached to the rechargeable electric power tool outside the battery pack, then the sealability is enhanced, but the attachment portion for the hook may be covered and the hook is unable to be fixed
Solution Approach 1:
The waterproof cover is divided into separate sections with strategic openings that provide access to the hook attachment portion. This segmentation allows the cover to maintain comprehensive waterproofing while creating dedicated access paths to the attachment area, resolving the conflict between sealability and accessibility.
Solution Approach 2:
A waterproof flap or gate mechanism acts as an intermediary between the sealed interior and the external attachment portion. This intermediary element maintains the waterproof barrier while allowing controlled access for hook attachment and detachment operations.
3Device complexity
If the hook is attached directly to the handle, then the attachment is simplified, but the hook becomes unfixable if the attachment method loosens
Solution Approach 1:
The attachment system incorporates redundant fixation mechanisms and self-tightening features that prevent loosening before it occurs. Elastic elements and friction-based locking mechanisms provide continuous securing force, cushioning against the harmful effect of detachment and ensuring reliable hook attachment without complex multi-step fastening.
Data Source
AI summary
A hook for electric power tools is disclosed. The hook is used with an electric power tool comprising a handle and a battery pack detachably mounted to a lower end portion of the handle. The hook is designed to be attached to the electric power tool in the proximity of the lower end portion of the handle and includes a ring-shaped slip-off preventing portion having an opening into which, when the battery pack is not attached to the handle, the handle can be inserted into the opening of the slip-off preventing portion, and when the battery pack is attached to the handle, the slip-off preventing portion can be prevented from being pulled out from the handle by the battery pack attached to the handle.