Adjustable Threshold Assembly for Vehicle Door Jamming
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Solution Overview
Problem
Vehicle doors and closet units often stick or jam during transit due to load movement or vehicle component bending, and existing adjustable threshold assemblies are overly complex and expensive.
Innovation Solution
An adjustable threshold assembly with a striker component that is removably coupled to a threshold body, featuring a plate and cup offset from the center, allowing for adjustable positioning to prevent sticking and jamming by modifying the engagement between the latch and the threshold assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a threshold assembly and striker plate are made adjustable to avoid sticking and jamming, then the reliability of door operation is improved, but the device complexity and cost increase
Solution Approach 1:
The threshold assembly is divided into separate modular components: a threshold body with a receptacle, a striker plate with a protrusion, and adjustable positioning elements. This segmentation allows each component to be independently adjusted and replaced, improving reliability while maintaining manageable complexity through modular design.
Solution Approach 2:
The striker plate is designed with adjustable positioning capabilities, allowing it to be moved to different locations on the threshold body. This dynamic adjustability enables the system to adapt to variations in door alignment and vehicle frame movement, preventing sticking and jamming while using simple mechanical adjustment mechanisms rather than complex systems.
2Reliability
If existing adjustable threshold assemblies are designed to prevent sticking and jamming, then the reliability is improved, but the manufacturing cost and complexity increase
Solution Approach 1:
By segmenting the threshold assembly into separate standardizable components (threshold body, striker plate, positioning elements), each part can be manufactured using simple, standardized processes. This modular approach reduces manufacturing complexity and cost compared to designing a single complex adjustable assembly, while still providing the necessary adjustability for reliable operation.
3Adaptability or versatility
If the cup is offset from the center of the plate, then the adjustability and customization of engagement is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The cup is deliberately positioned offset from the center of the striker plate, creating an asymmetric configuration that provides adjustable engagement characteristics. This asymmetry allows the protrusion to engage at different points on the cup's inner surface, enabling customization of the door's engagement behavior. The offset position is established through simple manufacturing features rather than requiring high-precision positioning, maintaining ease of manufacture while achieving adaptability.
Data Source
AI summary
A closet unit for a vehicle and a threshold assembly for use with a door are provided. The threshold assembly includes a threshold body that is coupleable to a frame of the closet unit with the threshold body including an opening formed therethrough. The threshold assembly further includes a striker component, in which the striker component includes a plate removably coupleable to the threshold body and a cup coupled to and offset from a center of the plate with the cup positionable through the opening of the threshold body. The threshold assembly further includes a fastener to removably couple the plate of the striker component to the threshold body.