Rubber Lip Seal Structure for Misalignment-Proof Bore Sealing
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Solution Overview
Problem
Existing hermetically sealing devices for bored openings in fluid pipes are complex, require precise alignment, and are prone to misalignment, especially when the opening is slightly misaligned, necessitating a simpler and more accurate sealing method that prevents misalignment during attachment.
Innovation Solution
A hermetically sealing device with a rubber seal featuring an inner lip that extends along the periphery of the bored opening, an outer lip that inclines towards the inner circumference, and a slit that allows the outer-surface-edge of the bored opening to enter, ensuring proper alignment and contact with the outer surface, while the inner lip is inserted into the opening and the outer lip contacts the periphery, preventing misalignment upon fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a hermetically sealing device is designed with a simple configuration, then manufacturing cost decreases and ease of manufacture improves, but positioning accuracy and alignment precision deteriorate
Solution Approach 1:
The rubber seal incorporates localized structural features including an inclined outer-circumference surface that guides the outer-surface-side edge of the bored opening, and a strategically positioned slit that receives this edge. These local structural qualities enable automatic positioning and alignment without requiring complex overall device configuration, thus resolving the contradiction between simplicity and positioning accuracy.
2Device complexity
If the hermetically sealing device is made simpler, then device complexity decreases, but the ability to prevent misalignment during attachment deteriorates
Solution Approach 1:
The rubber seal is pre-formed with an inclined outer-circumference surface and a slit positioned before the attachment process. When the device is attached to the bored opening, the outer-surface-side edge of the opening automatically enters the slit and follows the inclined surface, which preliminarily guides and positions the device correctly before final fixation. This preliminary action ensures reliable alignment without requiring complex alignment mechanisms.
3Ease of manufacture
If the rubber seal structure is simplified, then manufacturing cost decreases, but the hermetic sealing performance under water pressure deteriorates
Solution Approach 1:
The rubber seal utilizes the elastic and deformable properties of rubber material to dynamically adapt to the bored opening. The inclined outer-circumference surface and slit structure allow the rubber to deform and conform to the opening's geometry, ensuring reliable hermetic sealing under water pressure while maintaining a relatively simple manufacturable structure.
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 simple configuration that accurately positions the sealing device, prevents misalignment, and enhances hermetically-sealing performance by ensuring the inner and outer lips sandwich the edge of the bored opening, maintaining a tight seal even under water pressure, thus improving workability and sealing efficiency.
Implementation Method 1
an outer lip that is formed on an outer-circumference side relative to the slit that is formed on an outer-circumference side relative to the inner lip, and transforms in such a manner that the outer lip extends toward an outer-circumference side to be hermetically in contact with an outer surface of the periphery of the bored opening
Data Source
AI summary
A hermetically sealing device has a sealing main-body and a rubber seal adhered to the sealing main-body. The rubber seal includes an inner lip, a slit and an outer lip. The inner lip extends along a periphery of the bored opening, and includes an outer-circumference surface that extends forward and inclines toward an inner-circumference side. The slit is formed on an outer-circumference side relative to the inner lip. An outer-surface-side edge of the bored opening enters the slit. The outer lip is formed on an outer-circumference side relative to the slit that is formed on an outer-circumference side relative to the inner lip, and transforms in such a manner that the outer lip extends toward an outer-circumference side to be hermetically in contact with an outer surface of the periphery of the bored opening.