Seal Ring Positioning in Non-Circular Waterproof Connectors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing waterproof connectors with non-circular terminal accommodating portions experience reduced sealing performance due to nonuniform resilient deformation of seal rings when displaced in the circumferential direction.
Innovation Solution
A connector design featuring a tubular fitting with positioning recesses on its inner periphery and a seal ring with positioning projections, ensuring the seal ring is correctly positioned in the circumferential direction before mounting, preventing displacement and enhancing sealing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the seal ring is mounted on the non-circular terminal accommodating portion while being displaced in the circumferential direction, then the seal ring can be installed, but the resilient deformation becomes nonuniform and sealing performance is reduced
Solution Approach 1:
The positioning recess is formed at the front end of the tubular fitting to preliminarily position the seal ring in the circumferential direction before the seal ring is fully mounted. This preliminary positioning ensures that the seal ring starts from the correct position and maintains uniform resilient deformation, preventing sealing performance reduction while facilitating easy mounting.
2Reliability
If the seal ring is positioned correctly at the initial mounting stage, then sealing performance is maintained, but additional positioning structures are required
Solution Approach 1:
The positioning recess serves multiple functions: it positions the seal ring in the circumferential direction at the initial mounting stage, guides the seal ring during mounting, and maintains the seal ring's position to ensure uniform deformation. This multi-functional design maintains high sealing performance without significantly increasing structural complexity.
3Ease of operation
If the seal ring is located near the front end of the tubular fitting at the initial mounting stage, then visual position confirmation and operability are improved, but the seal ring may be more exposed to external forces
Solution Approach 1:
The positioning recess is strategically formed at the front end of the tubular fitting to provide preliminary positioning exactly where the seal ring is initially inserted. This allows operators to visually confirm and easily position the seal ring while the positioning structure itself provides immediate support to resist external forces during the critical initial mounting phase.
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 ensures consistent sealing performance by maintaining the seal ring's position during mounting, simplifying the process with visual confirmation and improved operability, and eliminating the need for post-mounting corrections.
Implementation Method 1
The positioning recess is configured to position the seal ring in a circumferential direction by engaging the positioning portion at an initial stage of mounting the seal ring
Implementation Method 2
the amount of resilient deformation of the seal ring may become nonuniform in the circumferential direction
Data Source
AI summary
A connector includes a housing (10) with a terminal accommodating portion (11) having a non-circular outer periphery and a tubular fitting (12) surrounding the terminal accommodating portion (11). A seal ring (30) is mounted on the outer periphery of the terminal accommodating portion (11) in the tubular fitting (12). Positioning projections (32) are formed on the seal ring (30), and positioning recesses (26) are formed on the inner periphery of a front end part of the tubular fitting portion (12) for engaging the positioning projections (32) at an initial stage of mounting the seal ring (30) and positioning the seal ring (30) in a circumferential direction by being.