Insulating Screwdriver Handle Structure for Electrical Isolation
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Solution Overview
Problem
Conventional screwdrivers lack effective insulation between the rod body and driving rod, posing a risk of electric shock when used with electrical equipment.
Innovation Solution
An insulating screwdriver handle structure with a handle, central shaft, and insulator that separates the driving member and central shaft, featuring a sleeve tube with elastic claws and a collar for secure positioning and storage, ensuring complete insulation and safe use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the rod body is directly connected to the driving rod inside the main body, then the screwdriver structure is simple and easy to manufacture, but the insulation performance deteriorates, creating a risk of electric shock
Solution Approach 1:
An insulator is introduced as an intermediary component between the driving rod and the rod body. The insulator is embedded in the main body and surrounds the driving rod where it contacts the rod body, preventing direct electrical contact while allowing mechanical connection. This resolves the contradiction by maintaining structural simplicity while achieving reliable insulation.
Solution Approach 2:
The screwdriver is divided into electrically isolated segments: the driving rod (metal), the insulator (non-conductive), and the rod body (metal). By segmenting the conductive paths and introducing non-conductive material between metal components, the design achieves both ease of manufacture and reliable insulation.
2Strength
If the driving member and central shaft are in direct contact, then the mechanical connection is strong and reliable, but the insulation performance deteriorates, posing a safety risk
Solution Approach 1:
The insulator serves as a mediator that allows the driving member to transmit mechanical force to the central shaft while blocking electrical current flow. The insulator is positioned precisely where the driving member contacts the central shaft, maintaining mechanical strength while eliminating electrical conductivity between these components.
3Ease of operation
If the sleeve tube is made to slide freely on the central shaft for easy bit storage and retrieval, then the ease of operation improves, but the positioning precision deteriorates, allowing the sleeve tube to detach
Solution Approach 1:
The elastic claws provide self-service positioning through their elastic deformation. When the sleeve tube is inserted, the elastic claws automatically deform and engage with the peripheral grooves on the central shaft, providing secure positioning without requiring external fastening mechanisms. This maintains ease of operation while ensuring precise positioning.
Solution Approach 2:
The elastic claws transition from a static attachment to a dynamic, flexible connection. The elastic deformation allows the claws to adapt to slight variations in positioning while maintaining secure engagement, providing both ease of insertion and precise positioning simultaneously.
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
The design achieves complete insulation between the driving member and central shaft, enhancing safety for use with electrical equipment and providing excellent positioning and storage performance.
Implementation Method 1
A plurality of elastic claws are formed on one end of the sleeve tube, and the other end thereof is connected to an end cap. When the sleeve tube is slidably disposed on the central shaft, the elastic claws are configured to engage with the first peripheral groove or the second peripheral groove, and the elastic ring is adapted to tighten the elastic claws
Data Source
AI summary
An insulating screwdriver handle structure may include a handle, a central shaft, an accommodating member, and at least a screwdriver bit. The handle has a working end and an open end, and an insulator embedded within the working end is connected to a driving member, and the driving member protruding from the working end is adapted to connect to the screwdriver bit. The central shaft comprises a fixed end and a locating end. The driving member and the central shaft are separated by the coating of the insulator, so that the driving member and the central shaft have no direct contact to achieve complete insulation during use, making it relatively safe for application in electrical equipment.