Reinforced Power Tool Hanger Structure to Prevent Suspension Failure
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Solution Overview
Problem
Electric power tools with hanger portions designed for suspending members like carabiners or ropes face deformation or damage due to load, leading to potential tool falls, and existing solutions compromise between strength and user comfort or durability.
Innovation Solution
Incorporating a metal reinforcement member, such as a high-strength wire or ring, within the hanger portion to enhance its strength and toughness, along with features like a half-split structure for easy assembly and a suspension detecting member to prevent motor activation when suspended, and an alarm system to alert users of deformation or damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the hanger portion is made larger to increase load resistance, then the strength and toughness are improved, but the usage comfort deteriorates due to contact with user's arm or work surface
Solution Approach 1:
The hanger portion is constructed using composite materials, specifically a resin base material combined with metal reinforcement members (wire or mesh). This composite structure provides high strength and toughness to withstand suspension loads while maintaining a compact size that does not interfere with user comfort or work surface operations.
2Reliability
If the hanger portion size is increased to prevent deformation, then the load resistance is improved, but the device complexity increases
Solution Approach 1:
Instead of uniformly increasing the entire hanger portion size, the invention applies metal reinforcement members (wire or mesh) locally within the resin hanger portion. This localized reinforcement provides the necessary strength and deformation resistance while maintaining a compact overall structure and avoiding unnecessary complexity.
3Strength
If a metal reinforcement member is embedded in the hanger portion, then the strength and toughness are improved, but the manufacturing complexity increases
Solution Approach 1:
The metal reinforcement members (wire or mesh) are prepared in advance and then embedded into the resin material during the molding process. This preliminary preparation of reinforcement members allows for efficient integration into the hanger portion structure, balancing enhanced strength with manageable manufacturing complexity.
Data Source
AI summary
A metal wire may be provided inside a hanger portion extending with an annular shape and which is integrally formed with an outer casing. An electric power tool may be prevented from falling, etc. due to deformation or breakage of the hanger portion by being reinforced by the wire.