Gasket Locking Protrusions for Position Stability
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Solution Overview
Problem
Sealing structures with small cross-sectional size gaskets face challenges in maintaining position stability and preventing deformation during fitting, as they tend to twist or come out easily due to elastic deformation.
Innovation Solution
A sealing structure featuring a gasket with locked protrusions engaging with locking protrusions in the fitting groove, supported by supporting protrusions, which limits compression and enhances positional stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a gasket with small cross sectional size is used, then the sealing structure can be more compact, but the gasket tends to twist or abnormally deform during fitting
Solution Approach 1:
The gasket is segmented with multiple locking protrusions distributed along its length, and the fitting groove has corresponding locking holes. This segmentation allows the gasket to be secured at multiple discrete points rather than relying on continuous elastic deformation, preventing twisting and abnormal deformation while maintaining compact dimensions.
Solution Approach 2:
The locking protrusions and locking holes are pre-configured in specific positions along the gasket and fitting groove. This preliminary arrangement ensures that during assembly, the gasket automatically engages with the locking features at the correct positions, stabilizing its orientation and preventing deformation before the sealing function is even activated.
2Reliability
If elastic repulsive force is used to prevent the gasket from coming out, then the gasket can be retained in the fitting groove, but the gasket may be twisted or abnormally deformed
Solution Approach 1:
Instead of relying on continuous elastic repulsive force along the entire gasket, the retention mechanism is segmented into discrete locking protrusions that engage with locking holes. This segmentation localizes the retention force at specific points, preventing the gasket from twisting or deforming while still ensuring reliable retention.
Solution Approach 2:
The patent replaces the elastic mechanical retention system with a mechanical interlocking system using locking protrusions and locking holes. This substitution eliminates the need for continuous elastic deformation to maintain retention, thereby preventing abnormal deformation while achieving reliable retention.
3Reliability
If the gasket is compressed in the groove width direction to prevent it from coming out, then retention is achieved, but the entire gasket deforms easily leading to twisting
Solution Approach 1:
The compression and retention mechanism is segmented into discrete locking protrusions rather than continuous compression. This allows the gasket to be retained through localized engagement points without requiring uniform compression across the entire gasket width, thereby preventing twisting and improving fitting accuracy.
Solution Approach 2:
The locking protrusions are positioned at specific locations along the gasket where retention is most needed. This local quality approach applies retention force only at critical points rather than uniformly across the entire gasket, minimizing deformation and improving fitting accuracy while maintaining reliable retention.
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 effectively stabilizes the gasket's position, prevents deformation, and improves attachability by securely locking the gasket within the groove, even with small cross-sectional sizes.
Implementation Method 1
a structure is known in which a protrusion is provided on the gasket or the fitting groove so that the gasket is prevented from coming out of the fitting groove by utilizing elastic repulsive force generated from a portion of the gasket that is being compressed in a groove width direction
Data Source
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AI summary
Provided is a sealing structure that is capable of stabilizing a position of a gasket while preventing the gasket from coming out, even if the gasket is one having a small cross sectional size. A sealing structure includes a first member (200) having a fitting groove (220); a second member (300) fixed to the first member (200); and a gasket (100) fitted to the fitting groove (220) to seal a gap between opposing surfaces of the first member (200) and the second member (300), wherein a plurality of locking protrusions (230) are provided on one of two sidewalls of the fitting groove (220), the locking protrusions (230) being spaced from each other and arranged along the direction in which the fitting groove (220) extends, and the gasket (100) is provided with a plurality of locked protrusions (120), the locked protrusions (120) being engageably locked against the respective locking protrusions (230) from a groove bottom side of the fitting groove (220).