Vehicle Strike Plate Sealing Lip Indexing Pin Design
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Solution Overview
Problem
Existing striker plates for vehicle doors face issues with water, air, and dust infiltration due to indexing pins, leading to corrosion and humidity problems, and existing sealing solutions are either unreliable or costly.
Innovation Solution
A striker plate design featuring indexing pins surrounded by a sealing lip, which ensures sealing during engagement without requiring a full-perimeter seal, using molded plastic or metallic soles with attached sealing lips, or integrated molded sealing lips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If indexing pins are provided on the sole to improve fixing, then the striker can be held in position before fixing, but the openings constituted by the indexing pins allow water, air and dust to enter, leading to corrosion and humidity problems
Solution Approach 1:
A sealing lip is introduced as an intermediary element between the indexing pin and the external environment. This sealing lip acts as a mediator that blocks the harmful factors (water, air, dust) from entering through the opening created by the indexing pin, while still allowing the indexing pin to perform its fixing function. The sealing lip is positioned on the sole around the indexing pin, creating a barrier that prevents infiltration while maintaining the structural integrity and fixing capability of the indexing pin system.
2Object-affected harmful factors
If sealing gaskets are installed around the sole to ensure complete sealing, then water and dust infiltration is prevented, but the cost increases and an additional operation is required
Solution Approach 1:
Instead of providing a complete perimeter seal around the entire sole, the sealing function is segmented and applied only at the critical locations where openings are present. The sealing lip is positioned specifically around the indexing pins, which are the main entry points for harmful factors. This segmented approach provides effective sealing at the most important locations while avoiding the complexity and cost of a complete perimeter seal.
Solution Approach 2:
The sealing solution applies local quality by providing sealing only where needed - around the indexing pins - rather than uniformly across the entire sole perimeter. This localized sealing approach addresses the specific problem areas (openings at indexing pin locations) without unnecessarily complicating the overall structure or increasing cost for complete perimeter sealing.
3Object-affected harmful factors
If foam is stuck on the sole to preserve watertightness, then sealing is improved, but the foam may come off during transport and the seal is broken
Solution Approach 1:
The patent replaces the adhesion-based sealing mechanism (sticking foam on the sole) with a structural integration mechanism. The sealing lip is molded as an integral part of the sole structure, creating a mechanical connection that is inherently more reliable and resistant to detachment during transport. This substitution of the sealing mechanism from external adhesion to internal integration eliminates the problem of foam coming off while maintaining effective watertightness.
Data Source
Figure 1~2
AI summary
The invention relates to a strike plate (1) for the closing lock of a movable panel for a vehicle, including a base plate (2), on one surface (2a) of which a closing element (3) of the strike plate is mounted so as to project, and comprising, on the opposite surface (2b) thereof, at least one indexing pin (4, 5). The invention is characterized in that said base plate (2) further comprises, on said surface (2b), at least one sealing lip (10) provided around said at least one indexing pin (4, 5).