Integrated Vehicle Sliding Door Rail and Bracket Structure
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Solution Overview
Problem
The existing sliding door devices for vehicles require multiple support and guide rails, increasing weight, component count, and complexity, which degrades design freedom and productivity, while also necessitating additional components for side collision protection.
Innovation Solution
A sliding door module structure featuring a center rail integrated with a module bracket and injection-molded plastic components, where the door rail protrudes into the vehicle compartment, supported by upper and lower guide rails with reinforcing members, allowing the slider to move stably along these rails, reducing the need for additional components and enhancing structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple support and guide rails are used to guide and support the sliding door, then the sliding door can be properly supported and guided, but the weight and number of components increase
Solution Approach 1:
The patent combines multiple separate rails (support rail and guide rail) into a single integrated center rail structure. The center rail includes both upper and lower portions that work together to provide both support and guidance functions, eliminating the need for separate support and guide rails. This merging reduces the number of components and overall weight while maintaining the necessary support and guidance capabilities for the sliding door.
2Reliability
If multiple support and guide rails are used to guide and support the sliding door, then the sliding door can be properly supported and guided, but the number of components increases
Solution Approach 1:
The patent integrates the support rail and guide rail functions into a single center rail assembly. The center rail includes a support portion and a guide portion that are structurally integrated, reducing the component count from multiple separate rails to a unified structure. This integration simplifies the overall door assembly while maintaining reliable support and guidance.
Solution Approach 2:
The center rail is designed to perform multiple functions simultaneously - it provides both vertical support and lateral guidance for the sliding door. The upper and lower portions of the center rail work together to achieve both support and guidance functions that previously required separate dedicated components, demonstrating multi-functionality that reduces overall system complexity.
3Strength
If the center rail is made longer to improve side collision resistance, then the strength increases, but the assemble-ability and productivity decrease
Solution Approach 1:
The center rail is divided into distinct upper and lower portions that can be manufactured separately and then assembled together. This segmentation allows each portion to be optimized for its specific function while maintaining overall structural strength. The modular design improves assemble-ability and productivity by enabling parallel manufacturing and simplifying installation, while the integrated upper-lower structure maintains the necessary length and strength for side collision resistance.
4Strength
If the center rail is made longer to improve side collision resistance, then the strength increases, but the productivity decreases
Solution Approach 1:
By segmenting the center rail into upper and lower portions, the patent enables more efficient manufacturing processes. Each portion can be produced using optimized manufacturing methods and then assembled, improving overall productivity. This segmentation allows for parallel production and reduces the complexity of manufacturing a single long rail, thereby increasing manufacturing efficiency while maintaining the total length needed for collision resistance.
Data Source
AI summary
A sliding door module structure for a vehicle may include a module bracket on which a door associated component is mounted, and a door rail formed integrally with the module bracket and coupled with a slider configured to be connected to a vehicle body to be movable.