Adjustable Jaw Screwing Tool With Insulated Live-Work Handle
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Solution Overview
Problem
Existing screwing tools struggle to efficiently accommodate screws and nuts with different wrench sizes and are not suitable for use on live parts due to electrical conductivity issues.
Innovation Solution
A screwing tool with a movable actuating element that allows adjustable jaw distance and an electrically insulating handle, enabling secure grip on live parts and accommodating various wrench sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the head is pivotally connected to the handle allowing distance adjustment between jaws, then the tool can accommodate different wrench sizes, but the tool becomes electrically conductive and unsafe for live parts
Solution Approach 1:
An electrically insulating actuating element is introduced as an intermediary component between the user's hand and the conductive head. This actuating element allows mechanical operation (pivoting the head to adjust jaw distance) while electrically isolating the user from live parts, thus resolving the contradiction between adaptability and electrical safety
2Ease of operation
If a spring element forces the head into a closed position, then the jaws are automatically positioned for small distances, but an additional actuating mechanism is required to open the jaws for large distances
Solution Approach 1:
The actuating element serves multiple functions: it mechanically pivots the head to adjust jaw distance, provides electrical insulation for safety, and enables user control over the spring-loaded mechanism. By combining these functions in a single component, the patent minimizes overall device complexity while maintaining ease of operation
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
Enables secure gripping of screws and nuts with different wrench sizes while ensuring electrical safety when used on live parts.
Implementation Method 1
against a restoring force... The movable jaw is spring-loaded towards the fixed jaw by a spring element
Implementation Method 2
the actuating element is electrically insulating or has an electrically insulating sheath... the handle has an electrically insulating casing
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a screwing tool, comprising a head (2), which has a fixed jaw (4) and a movable jaw (3) and is fastened to a handle (1) such that the head can be pivoted about a pivot axis (20) against a restoring force from a small distance position of the two jaws (3, 4) to a large distance position of the two jaws (3, 4). In order to allow voltage-carrying parts to be touched with a screwing tool of this type, the handle has an insulating casing (11), and an actuation element (5) movable relative to the handle (1) is provided, which actuation element, when moved, moves the head (2) from a small distance position to the large distance position.