Wire Box with Rectilinear Edge to Prevent Twisting
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Solution Overview
Problem
Existing electrical wire boxes fail to prevent the 'pigtail' effect, where wires twist when pulled out, making them unsuitable for direct use in circuits, and lack clear indicators for remaining wire length, complicating simultaneous installation of multiple wires.
Innovation Solution
The electrical wire box features a parallelepiped shape with a rectilinear opening on one square face to prevent twisting and a radial slot with graduations on another face to measure remaining wire length, allowing for straight extraction and precise length evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wire is pulled out from a conventional box without a straight edge, then the wire can be extracted easily, but the wire twists and forms a pig's tail making it unsuitable for direct use
Solution Approach 1:
A straight edge is introduced as an intermediary element at the wire exit point. This straight edge acts as a mediator between the wire and the external environment, guiding the wire as it exits and preventing twisting without requiring the operator to manually straighten it afterward.
2Device complexity
If conventional boxes are used without remaining wire indicators, then the box structure remains simple, but the operator cannot easily determine how much wire is left
Solution Approach 1:
A scale with visual indicators (different colors or markings) is implemented on the box. This allows the operator to quickly assess the remaining wire length through visual observation without adding complex mechanical or electronic components. The scale translates the physical state of wire remaining into easily interpretable visual information.
3Adaptability or versatility
If multiple boxes are used for simultaneous wire installation, then each box can be handled independently, but the operator must perform complicated procedures to extract wires to predetermined lengths
Solution Approach 1:
Multiple wire boxes are designed with complementary fastening means that enable them to be joined together into a single integrated unit. This merging allows the operator to handle multiple wires simultaneously from a unified structure, maintaining the ability to work with multiple wires while eliminating the need for separate, complicated extraction procedures for each box.
4Ease of operation
If the opening is made large to facilitate wire extraction, then the wire can be pulled out easily, but the box structure becomes weaker and less protective
Solution Approach 1:
The opening is segmented into a specific geometric configuration with straight edges rather than a single large unbroken aperture. This segmentation allows the opening to provide adequate wire extraction access while the straight edges and geometric structure maintain the structural integrity of the box, distributing stress and preventing weakness.
Data Source
Figure 1~2
AI summary
The invention relates to an electrical wire box (1) having a parallelepiped shape and being delimited by two main square faces (2, 3) and parallel, said box (1) comprising a coil (9) around which is wound an electrical wire (10), at least one of the two main square faces (2, 3) of the box (1) being provided with an opening (8) to allow one end (12) of said electrical wire (10) to emerge from the box (1). According to the invention, the opening (8) is delimited by at least one straight edge (13, 14, 15, 16), so that an operator, by pulling on the emerging end of the wire (10) to make it come out of the box (10), will cause the wire (10) to come into contact with the straight edge (13, 14, 15, 16), which will prevent the wire (10) from twisting or tangling.