Movable Door Drive Assembly for Jam Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door drives for large portal openings in vehicles are prone to jamming due to relative movements between holding parts caused by vehicle deformation and uneven road conditions, which can lead to functional impairment and damage.
Innovation Solution
The door drive design incorporates a movable connection between holding parts, allowing the movable assembly to move independently of one holding part, with transverse guides that absorb relative movements, preventing jamming and distributing loads effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If holding parts are rigidly connected via transverse guides and movable arrangement, then structural stability is improved, but jamming occurs due to vehicle deformation and road unevenness
Solution Approach 1:
The patent converts the rigid connection between holding parts into a dynamic, movable connection. The movable arrangement is designed to move relative to at least one holding part along a guide, allowing the system to adapt to vehicle deformations and road unevenness while maintaining operational reliability and preventing jamming.
2Adaptability or versatility
If transverse guides are designed to compensate for movements, then adaptability to vehicle deformation is improved, but movements in other directions cannot be compensated
Solution Approach 1:
The patent extends movement compensation from one dimension (transverse direction) to multiple dimensions by allowing the movable arrangement to move relative to the holding part along a guide. This enables compensation for vehicle deformations and road unevenness in various directions, not just transverse movements.
3Measurement precision
If movable arrangement is firmly connected to both holding parts, then positional accuracy is improved, but increased loading on components occurs during relative movements
Solution Approach 1:
The patent replaces the static, firm connection with a dynamic movable connection that allows controlled movement along a guide. This reduces component loading during vehicle deformations and road unevenness while maintaining sufficient positional accuracy for door operation.
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
This design ensures that relative movements between holding parts do not affect the door drive's operation, preventing jamming and reducing the risk of component failure, thereby maintaining functionality even under practical driving conditions.
Implementation Method 1
The transverse guides, which represent a guide in the y-direction, can compensate for movements in this direction
Implementation Method 2
The transverse guides are designed as roller guides. They each have at least one, preferably at least two roles.
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The drive has two lateral retaining parts (24, 26), which have attachment units for their attachment at a vehicle wall (20), and a movable arrangement (28) provided between the parts. The arrangement has a unit for accommodating a door wing of a vehicle e.g. rail vehicle. Left and right cross rails (30, 32) are arranged between the arrangement and the parts to enable transverse guidance transverse to a portal opening (22) lying in the wall. The rail (30) is movably connected with the arrangement and/or to the retaining parts and/or the relative movement is enabled in the rail (30).