Insulated Handle with Replaceable Rod for High Voltage Safety
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Solution Overview
Problem
Existing hand tools, such as screwdrivers, fail to provide adequate insulation between the metal rod and handle, leading to potential electric shocks when used in high-voltage environments, posing a safety risk to users.
Innovation Solution
A hand tool design featuring a handle made of insulation material with a hollow portion and embedding groove, combined with an end plug that includes a clamping section and abutting section, ensuring proper insulation between the tool rod and handle, allowing for replaceable tool rod insertion and preventing current conduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If steel balls are used for positioning the tool rod in the handle, then the tool rod can be replaced, but the insulation between the metal rod and handle is insufficient, causing current conduction risk
Solution Approach 1:
An insulating sleeve is introduced as an intermediary component between the metal tool rod and the handle. This sleeve completely covers the surface of the metal rod, acting as a mediator that prevents direct contact and current conduction while still allowing the tool rod to be positioned and replaced within the handle assembly.
Solution Approach 2:
The handle assembly uses composite material structure combining insulating material (for the handle and insulating sleeve) with metal material (for the tool rod). This composite approach allows the metal tool rod to maintain its mechanical properties while the insulating materials provide electrical isolation, achieving both functionality and safety.
2Device complexity
If metal rod is directly inserted into the handle, then the structure is simple, but current can be conducted from the tool rod to the handle
Solution Approach 1:
The insulating sleeve serves as a mediator component that is relatively simple in structure (a cylindrical covering) but effectively blocks current conduction. It is inserted into the handle and over the tool rod, creating electrical isolation without significantly complicating the overall handle structure.
Solution Approach 2:
The handle assembly is segmented into distinct functional components: the handle body, the insulating sleeve, and the metal tool rod. This segmentation allows each component to perform its specific function - the insulating sleeve specifically handles electrical isolation while the metal rod handles mechanical functions, and the parts can be assembled and disassembled independently.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances user safety by ensuring that current is not conducted from the tool rod to the handle, even when in contact with high voltage, through effective insulation, thereby preventing electric shocks.
Implementation Method 1
The end plug has the insulation material... the insulating sleeve and the end plug both have proper insulation property, the insulation effect between the tool rod and the handle may be ensured, so that the current may not be conducted to the handle
Data Source
AI summary
A hand tool with insulation handle. The handle is made of an insulation material and is formed with a hollow portion (11) and an embedding groove (12). The embedding groove (12) is communicated with the hollow portion (11) and located on a front end (101) of the handle. The tool rod (20) includes a shaft (21) having a rear end (211) and a front end (212). The end plug (30) is made of the insulation material and includes a clamping section (31) and an abutting section (32). The rear end (211) of the shaft is positioned in the end plug through snapping the clamping section. The tool rod (20) is replaceablely inserted in the hollow portion (11) of the handle and protrudes from the handle.