Vehicle Window Drainage Seal With Elastic Anti-Ejection Engagement
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Solution Overview
Problem
The existing sealing systems for connecting drainage devices to vehicle window glasses face challenges with dimensional tolerances, making it difficult to mount the drainage device and prone to ejection, leading to water leakage.
Innovation Solution
A sealing system with a detachable engaging section featuring an elastic positioning element with a U-shaped or V-shaped engaging head that deforms to facilitate easy mounting and secure attachment, requiring a higher force for removal, ensuring the drainage device remains in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rigid sealing system with fixed dimensions is used to connect the drainage device to the vehicle window glass, then the manufacturing precision can be improved, but the ease of operation deteriorates due to dimensional tolerances making mounting difficult
Solution Approach 1:
The sealing system incorporates an elastic arm that can change its shape parameter dynamically. During mounting, the elastic arm deforms to accommodate dimensional variations in the drainage device, and after mounting, it rebounds to provide secure retention. This parameter change allows the system to maintain both manufacturing precision and ease of operation.
Solution Approach 2:
The sealing system transitions from a static rigid structure to a dynamic elastic structure. The elastic arm can deform during the mounting process to facilitate easy installation, then maintains a stable engaged state after mounting. This dynamic behavior resolves the contradiction between precision and ease of operation.
2Ease of operation
If a loose-fitting sealing system is used to accommodate dimensional tolerances, then the ease of operation is improved, but the reliability deteriorates due to ejection of the drainage device
Solution Approach 1:
The elastic arm's shape parameter changes during mounting to accommodate tolerances, then stabilizes in a locked position that prevents ejection. The transition from deformable state to stable engaged state ensures both ease of operation and connection reliability.
Solution Approach 2:
The sealing system design anticipates the ejection force that may occur after mounting. The elastic arm is pre-configured to exert a retaining force that counteracts any ejection tendency, ensuring the drainage device remains securely connected during vehicle operation.
3Reliability
If a secure retention mechanism is implemented to prevent ejection, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The sealing system is divided into distinct functional segments: a fixing section for attachment to the vehicle window glass, an engaging section for connection to the drainage device, and a positioning element for alignment. This segmentation allows each part to perform its specific function efficiently without unnecessary complexity.
Solution Approach 2:
The elastic arm serves multiple functions: it facilitates easy mounting by deforming during insertion, provides secure retention through its rebound force, and accommodates dimensional tolerances. This multi-functionality reduces the need for additional separate components, thereby reducing overall device complexity while maintaining high reliability.
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 system allows for easier mounting of the drainage device with reduced insertion force and increased extraction force, enhancing stability and production efficiency while preventing water leakage.
Implementation Method 1
the positioning element 130 being at least partially elastically deformable; when the drainage device 200 is mounted/introduced into the engaging section 120 of the sealing system 100, since the positioning element 130 is at least partially elastically deformable, the engaging head 132 deforms and moves towards the orientation of the opening
Implementation Method 2
a protruding portion of the free end of the rib 210 exceeds the engaging head 132, which relatively reduces the force acting on the engaging head 132, such that the engaging head 132 can partially rebound to abut against the rib 210 of the drainage device, thereby fixing the drainage device 200 to the sealing system 100
Data Source
AI summary
A sealing system for connecting a drainage device to a vehicle window, includes a fixing section for being connected to the vehicle window glass and an engaging section for being detachably connected to the drainage device, the engaging section including a supporting body, an elastic arm, and a transition portion connecting the supporting body to the elastic arm; wherein the sealing system further includes a positioning element connected to the transition portion and the supporting body, the positioning element being at least partially elastically deformable; further, the positioning element includes an elastic leg connected to the transition portion and an engaging head connected to the supporting body, the engaging head having a cross section presenting a U-shape or V-shape, and the U-shape or the V-shape having an opening oriented towards the supporting body.