Wire Retaining Device Acute Angle Projections Peg Board
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Solution Overview
Problem
Manual assembly of wire harnesses leads to inconsistent routing and potential damage to wires due to slipping issues with cylindrical pegs, and existing clamping solutions alter the insulation or damage the wires.
Innovation Solution
A wire retaining device with a base and wire retaining members that restrict movement in specific directions, using a combination of channels, columns, and pliable materials to securely hold wires without manual tie-offs or clamps, incorporating features like acute-angle projections, triangular cross-sections, and pliable rubber folds for grip, and optional magnets or alignment pins for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If cylindrical pegs are used to hold wires during automated assembly, then wires can be placed automatically, but wires tend to slip up and away from the pegs interfering with robotic gripping fingers
Solution Approach 1:
The wire retaining device is segmented into multiple functional components: a base for mounting, a main body forming a receiving channel, and wire retaining members with acute-angle projections. This segmentation allows each component to perform its specific function - the channel guides the wire while the acute-angle projections prevent upward slippage, solving the reliability issue while maintaining automation
Solution Approach 2:
The wire retaining members act as intermediaries between the cylindrical peg structure and the wire. These members with acute-angle projections provide the necessary mechanical interference to prevent wire slippage without requiring the robotic gripper to maintain constant pressure, thus mediating between automated placement and reliable retention
2Reliability
If clamping pegs are used to prevent wire slippage, then wire retention improves, but the required clamping force alters the insulation around the wires and even dents or otherwise damages the wires
Solution Approach 1:
The wire retaining members have acute-angle projections that concentrate the retaining function at specific localized points rather than applying distributed clamping pressure. The acute angles provide mechanical interference to prevent slippage while the localized contact points minimize the affected area on the wire insulation, reducing damage compared to broad clamping surfaces
Solution Approach 2:
The wire retaining members feature asymmetric acute-angle projections that allow wire insertion in one direction while preventing removal in the opposite direction. This asymmetric geometry provides retention without requiring symmetric clamping forces that would compress and damage the wire insulation, allowing the wire to nestle against the acute angles rather than be squeezed
3Adaptability or versatility
If manual assembly is used to place wires on a peg board, then wire routing can be adjusted, but routing consistency varies and additional wire length is required for tie-offs
Solution Approach 1:
The wire retaining members are pre-configured with acute-angle projections at fixed positions on the wire receiving channel. This preliminary configuration establishes consistent wire routing paths before assembly begins, ensuring that wires are retained at precise, repeatable locations without requiring manual adjustment during assembly, thus improving manufacturing precision while maintaining adaptability through the modular device design
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, automated placement of wires on a peg board without altering the wire's insulation or causing damage, maintaining consistent routing and reducing setup and takedown times, while allowing for versatile repositioning and minimizing space requirements.
Implementation Method 1
The wire retaining members are positioned within said wire receiving channel and project outward from the corresponding first and second columns at acute angles. Projecting the wire retaining members at acute angles restricts movement of a wire through the wire receiving channel
Implementation Method 2
The wire retaining members may be constructed of a pliable material. Additionally, the first and second opposing columns may each include an outer sidewall that forms an arc extending between opposing ends of the column
Data Source
AI summary
A peg apparatus is described that is suitable for use with an electrical wire harness peg board. The pegs are utilized on a wire harness peg board during the assembly of a wire harness, and are particularly well suited for use in an automated assembly of the electrical wire harness where a constant upward, downward or lateral tension is desired without altering the free ends of each wire of an assembled wire harness.