Sliding Door Guide Rail Positioning and Holding Arrangement
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Solution Overview
Problem
The installation of sliding side doors on commercial vehicles is cumbersome and prone to errors due to the need for complex assembly and adjustments, leading to shifts, clearances, and operational issues like squeaks, which are time-consuming and costly to correct.
Innovation Solution
An arrangement featuring separate positioning and holding means for the guide rail, including centering pins and threaded rods, allows for precise alignment and secure mounting of the guide rail to the vehicle body, eliminating the need for tedious template-based assembly and reducing assembly dispersions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a template is used for positioning the guide rail, then the positioning accuracy is improved, but the assembly time and complexity increase
Solution Approach 1:
The guide rail is pre-assembled with positioning ears that have positioning holes, and the body side is pre-equipped with positioning pins. This preliminary preparation eliminates the need for complex templates during assembly, as the components self-align through the pin-hole interface, achieving both high positioning accuracy and simplified assembly process
Solution Approach 2:
The positioning function is extracted from the complex template system and embodied in simple, dedicated positioning pins and positioning holes. This extraction simplifies the assembly process by removing the need for large, complex templates while maintaining positioning accuracy through the focused pin-hole interface
2Manufacturing precision
If manual adjustments are performed to correct positioning errors, then the positioning accuracy is improved, but the assembly time and labor effort increase
Solution Approach 1:
The guide rail and body side are pre-configured with positioning ears and positioning pins that ensure correct alignment before final assembly. This preliminary positioning action prevents the need for time-consuming manual adjustments during the assembly process, achieving both high positioning accuracy and reduced assembly time
Solution Approach 2:
The positioning pins and holes are designed to self-align the guide rail with the body side during assembly. This self-positioning mechanism eliminates the need for operator intervention and manual adjustments, automatically achieving accurate positioning while reducing assembly time and labor effort
3Strength
If the guide rail is securely fixed to the body side, then the holding strength is improved, but the positioning precision during assembly decreases
Solution Approach 1:
The fixing mechanism is segmented into distinct positioning ears with positioning holes and corresponding positioning pins. This segmentation separates the positioning function from the fixing function, allowing the guide rail to be precisely positioned through the pin-hole interface before being securely fastened with multiple fixing points, thereby achieving both high positioning precision and strong holding strength
Solution Approach 2:
The positioning pins are inserted into the positioning holes as a preliminary action before final fixing. This preliminary positioning step establishes accurate alignment, and only after this positioning is confirmed do the fixing means secure the connection, ensuring that holding strength is achieved without compromising positioning precision
Data Source
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AI summary
The invention relates to an arrangement (3) for ensuring the positioning and retention of a guide rail (20) of a sliding side door of a vehicle, in particular the positioning and retention of a lower guide rail, comprising a guide rail (20) having a rear end (22) and a front end (21), a body side (10) comprising a housing (30) for positioning and retaining the front end (21) of the guide rail (20), the housing (30) extending transversely into the interior of such a vehicle, the body side (10) and the guide rail (20) comprising positioning means (50) relative to each other and the body side (10) and the guide rail (20) comprising retaining means (60) relative to each other, the positioning means (50) being separate from the retaining means (60).