Self-Adaptive Carriage for Vehicle Sliding Door Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sliding door mechanisms for vehicles, when adapted to attach to A, B, or C pillars, face issues with stability and increased movement effort, making them unsuitable for large-scale commercial production.
Innovation Solution
A sliding door assembly with a self-adaptive carriage that allows pillar attachment, featuring a guide rail with rolling surfaces and yieldably biased rollers, which flex to accommodate manufacturing variances, ensuring reduced movement effort and enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the door is attached to A, B, or C pillars with a traditional guide mechanism, then the door can be mounted at different positions, but the door stability deteriorates and movement effort increases
Solution Approach 1:
The carriage is designed to be dynamically adaptable rather than rigidly fixed. It can automatically adjust its position and orientation along the guide rail to accommodate different mounting locations while maintaining stable door operation. The bearing arm provides dynamic positioning capability that resolves the contradiction between mounting flexibility and operational stability.
Solution Approach 2:
The system allows changes in geometric parameters (position, orientation) of the carriage relative to the guide rail based on mounting requirements. By varying these parameters adaptively, the door can be installed at different pillar locations while maintaining consistent stability characteristics throughout the range of motion.
2Adaptability or versatility
If the door is attached to A, B, or C pillars with a traditional guide mechanism, then the door can be mounted at different positions, but the movement effort increases
Solution Approach 1:
The bearing arm creates a dynamic mechanical advantage system that reduces movement effort. As the carriage moves along the guide rail, the bearing arm rotates to maintain optimal force transmission, automatically adapting to different mounting positions without increasing the actuation force required.
3Ease of manufacture
If manufacturing tolerances are accommodated in traditional guide mechanisms, then production variance is accepted, but door stability and movement consistency deteriorate
Solution Approach 1:
The self-adaptive carriage dynamically compensates for manufacturing tolerances through its ability to adjust position and orientation along the guide rail. The bearing arm mechanism provides automatic alignment that maintains consistent door stability and movement characteristics regardless of production variations in guide rail spacing or positioning.
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 self-adaptive carriage maintains consistent rolling engagement and stability, reducing the effort required to move the door and accommodating production tolerances, making it suitable for large-scale production and potential power actuation.
Implementation Method 1
at least one roller is yieldably biased against a rolling surface of the guide rail by a biasing member
Implementation Method 2
The biasing member permits movement of one or more rollers relative to the carriage body to accommodate variances in the rolling surfaces as the adaptive carriage translates relative to the guide rail
Data Source
AI summary
A motor vehicle sliding door that may be supported by a pillar of the motor vehicle and having a sliding door assembly with a self-adaptive carriage. The self-adaptive carriage can allow for attachment of the door to the vehicle body at the A, B, or C pillars with reduced movement efforts and increased stability while accommodating manufacturing tolerance variation over large scale production runs.