Fastening Device Sealing Element Height-to-Width Ratio
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Solution Overview
Problem
Existing fastening devices face challenges in ensuring a reliable sealing function across a wide tolerance range for driving depth, as the sealing element may not be sufficiently compressed or may protrude excessively, limiting the tolerance for driving depth.
Innovation Solution
A fastening device with a sealing element having a greater height-to-width ratio (h>1.1×b, preferably h>1.5×b or h>1.8×b) ensures sufficient compression and prevents radial protrusion, featuring a sealing ring with specific dimensions and geometries to maintain sealing effectiveness across varying driving depths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving depth is increased to ensure sufficient compression of the sealing element, then the sealing function is improved, but the sealing element may protrude radially outward excessively
Solution Approach 1:
The sealing element's height-to-width ratio is changed to greater than 1:1 (specifically h>1.1×b, preferably h>1.5×b, especially preferably h>1.8×b). This parameter change allows the sealing element to achieve sufficient compression for reliable sealing without excessive radial protrusion, even when driving depth fluctuates within a wide tolerance range.
2Shape
If the driving depth is decreased to prevent radial protrusion of the sealing element, then the shape control is improved, but the sealing element may not be sufficiently compressed to guarantee sealing function
Solution Approach 1:
The sealing element is designed with a height-to-width ratio greater than 1:1 (h>1.1×b, preferably h>1.5×b, especially preferably h>1.8×b). This geometric parameter ensures that even at reduced driving depths, the sealing element maintains sufficient compression for reliable sealing while preventing excessive radial protrusion.
3Device complexity
If a conventional sealing element with equal height and width is used, then the device complexity is reduced, but the tolerance for driving depth is limited
Solution Approach 1:
The sealing element is designed with a height-to-width ratio greater than 1:1 (h>1.1×b, preferably h>1.5×b, especially preferably h>1.8×b). This simple geometric parameter change significantly widens the acceptable driving depth tolerance range, reducing the need for precise depth control during installation while maintaining both sealing function and shape control.
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 guarantees a reliable sealing function within a wide tolerance for driving depth without excessive radial protrusion, ensuring effective sealing even with large fluctuations in depth, while maintaining contact with the object being fastened.
Implementation Method 1
the sealing element is compressed sufficiently even if there are large fluctuations in the driving depth
Data Source
AI summary
The invention relates to a device for fastening a first object to a second object, said device comprising a first load section having a first load-engaging means, a driving section defining a driving direction and a sealing element for creating a seal between the device and the second object, the sealing element having a width perpendicular to the driving direction and a height in the driving direction.