Waterproof Swivel Connector Axial Force and Sealing
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Solution Overview
Problem
Existing swivel connectors for robotic cleaning vehicles in liquid-filled containers face challenges in maintaining electrical contact, preventing liquid ingress, and resisting axial forces while allowing for torsional stress relief, which are not adequately addressed by current solutions.
Innovation Solution
A waterproof swivel electrical cable connector design featuring a housing structure with detents and protuberances, O-rings or X-rings for sealing, and a locking sleeve that allows for rotation and easy disconnection of cable segments, ensuring a watertight and secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a classical stereo jack and socket with an O-ring is used to effect electrical connection and isolate from liquid, then electrical contact and liquid isolation are achieved, but the connector cannot resist axial forces effectively
Solution Approach 1:
The patent combines the electrical connection function (stereo jack and socket) with the mechanical strength function (elbow structure) into a single integrated connector assembly. The elbow structure encompasses both the electrical contacts and the O-ring seal, providing both electrical connectivity and axial force resistance through its rigid geometry that can withstand bending and pulling forces while maintaining the electrical connection integrity.
2Strength
If a rigid right angle elbow structure is used to resist axial forces, then axial force resistance is improved, but torsional stress relief from vehicle movement is not achieved efficiently
Solution Approach 1:
The patent introduces a swivel joint mechanism within the elbow structure that enables rotational movement. This dynamic element allows the connector to rotate and flex as the robotic vehicle moves along tortuous paths, relieving torsional stress from the cable while the overall rigid elbow structure continues to provide axial force resistance. The swivel joint acts as a degrees-of-freedom element that accommodates motion without compromising structural strength.
3Reliability
If cable segments are connected with a locked structure, then connection security is improved, but ease of disconnection when not in operation is reduced
Solution Approach 1:
The patent employs a locking mechanism that automatically engages when the connector assemblies are mated, providing secure connection without requiring additional fastening steps. The lock is designed to be released by a simple manual action (such as pressing a button or pulling a tab), allowing the user to easily disconnect the cable segments when needed. This self-locking feature ensures connection security during operation while maintaining ease of disconnection for maintenance or storage.
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 provides a reliable, waterproof, and rotatable electrical connection that resists axial forces, maintains electrical contact, and allows for easy disconnection, effectively addressing the limitations of existing swivel connectors.
Implementation Method 1
an O-ring or X-ring providing a water-resistant seal between the first housing and the second housing
Implementation Method 2
a second housing step engaging a locking sleeve detent to limit the axial movement of the first housing relative to the second housing
Implementation Method 3
a cable grasping structure formed by the first end cap, the second end cap, a first housing, and a second housing
Data Source
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AI summary
A waterproof swivel electrical cable connector comprises a first housing including a first electrical connector being rotatably connected to a second housing including a second electrical connector. A first elastomeric washer is intermediate the first housing and the second housing and providing a watertight seal between the first housing and the second housing as the first housing and first electrical connector are rotated relative to the second housing and second electrical connector.