Electrically Isolated Socket Tool with Segmented Metallic Bodies
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Solution Overview
Problem
Metallic socket tools used near electrically charged components pose a risk of electrical shock or spark hazards due to potential conductivity, as traditional non-conductive coatings wear off quickly under high torque conditions, exposing metallic surfaces.
Innovation Solution
An electrically isolated socket tool design featuring separate metallic bodies for the driven and drive ends, over-molded with a non-metallic, insulating material to prevent electrical contact and enhance durability, ensuring the tool remains non-conductive even under high torque and repeated use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a metallic socket is coated with non-conductive material, then electrical isolation is improved, but the coating wears away quickly under high torque conditions
Solution Approach 1:
The socket is divided into two separate metallic bodies (drive body and driven body) that are electrically isolated from each other. This segmentation allows each body to maintain its metallic properties for strength and torque transmission while eliminating the need for a coating that would wear away. The isolation is achieved through physical separation rather than relying on a consumable protective layer.
Solution Approach 2:
A non-conductive body portion acts as an intermediary element between the drive body and driven body. This intermediary provides the electrical isolation function without being subject to the high torque and wear conditions that would degrade a surface coating. The intermediary transfers mechanical function while blocking electrical conduction.
2Strength
If the socket ends contacting driving tool or fastener remain metallic, then torque transmission and durability are improved, but electrical conductivity creates shock or spark hazards
Solution Approach 1:
The socket is segmented into separate metallic bodies for the drive end and driven end. This allows both ends to be metallic for optimal torque transmission and durability, while the segmentation combined with the non-conductive body portion prevents electrical conduction between the ends, eliminating the spark hazard.
Solution Approach 2:
Different parts of the socket have different electrical properties. The drive body and driven body are metallic where needed for strength and torque transmission, while the body portion providing isolation is non-conductive. This local differentiation of material properties allows simultaneous optimization of torque transmission and electrical safety.
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 solution effectively prevents electrical hazards by maintaining electrical isolation between the driven and drive ends, enhancing the tool's durability and safety for use near electrically charged components without compromising its ability to withstand high torque.
Implementation Method 1
The body portion may over-mold substantially all portions of the drive body and the driven body other than the drive end and the driven end, respectively... effectively prevents electrical hazards by maintaining electrical isolation between the driven and drive ends
Data Source
AI summary
An electrically isolated socket may include a drive body, a driven body, and a body portion. The driven body may be made of first metallic material and having a driven end configured to receive a fastener. The drive body may be made of a second metallic material and having a drive end configured to receive a protrusion of a driving tool. The body portion may over-mold substantially all portions of the drive body and the driven body other than the drive end and the driven end, respectively. The drive end of the drive body and the driven end of the driven body may face away from each other, and the drive body and driven body each include axial grooves. The axial grooves of the drive body each extend substantially perpendicular to an annular groove formed in the drive body from the annular groove formed in the drive body to the drive end, and the axial grooves of the driven body each extend substantially perpendicularly to an annular groove formed in the driven body from the annular groove formed in the driven body to the driven end.