Modular Door Guide Profile Rail for Quiet Vehicle Operation
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Solution Overview
Problem
Existing profile rails for vehicle door guides, particularly those with curved sections, face manufacturing challenges due to constrictions and bending during production, leading to high manufacturing tolerances and potential issues with smooth operation and noise during door movement.
Innovation Solution
A modular profile rail system comprising separate profile rail pieces connected via a plug-in system, including a connecting piece with upper and lower parts that can be assembled transversely, allowing for compensation of manufacturing and thermal tolerances, and featuring a virtually gap-free transition for smooth roller movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a one-piece profile rail is used, then manufacturing complexity is reduced, but manufacturing precision deteriorates due to constrictions and bending during production
Solution Approach 1:
The profile rail is divided into multiple separate profile rail pieces that can be manufactured individually with high precision and then connected together. This segmentation allows each piece to be produced without the constrictions and bending issues that affect one-piece manufacturing, thereby maintaining high manufacturing precision while using a modular structure.
2Ease of operation
If high manufacturing tolerances are enforced, then smooth operation is improved, but manufacturing difficulty increases
Solution Approach 1:
By segmenting the profile rail into separate pieces, each component can be manufactured with standard tolerances that are easier to achieve, while the final assembled structure provides the smooth roller movement required for operation. The modular approach distributes the precision requirements across multiple components rather than demanding extreme precision from a single piece.
3Device complexity
If thermal expansion is not compensated, then manufacturing simplicity is maintained, but reliability deteriorates due to dimensional changes
Solution Approach 1:
The modular segmented structure allows for natural thermal expansion and contraction of individual pieces without creating excessive stress in the overall assembly. The connection points between segments can accommodate dimensional changes, maintaining reliability while keeping the structural design relatively simple.
Data Source
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AI summary
The invention relates to a profile rail for a door guide of a vehicle, comprising a first profile rail section (2) with a first end face (S1) and with a second end face (S2), and a connecting piece (4), wherein the connecting piece (4) has a first end (4a) and a second end (4b), wherein the first end (4a) of the connecting piece (4) has a first end-face connection area (5) for connecting to the first profile rail section (2), wherein the connecting piece (4) is designed as a separate profile rail section, and wherein the connecting piece (4) can be connected via the first end-face connection area (5) to at least one end face (S1; S2) of the first profile rail section (2) by means of a plug-in system.A profile rail which is easy to assemble and reliable and enables quiet operation is created according to the invention by the fact that the connecting piece (4) comprises an upper connecting piece part (33) and a lower connecting piece part (34), and that the upper connecting piece part (33) and the lower connecting piece part (34) can be connected to each other along a connecting line (35) which runs at least partially transversely with respect to the first end-face connection area (5).