Vehicle Door Locking Disk Mechanism for Vibration-Resistant Opening
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Solution Overview
Problem
Existing door systems for vehicles lack sufficient protection against vibrations and shocks, often require excessive force to overcome dead-center positions, and are costly to produce and install, with locking mechanisms that can be easily reversed during movement, posing safety risks.
Innovation Solution
A door system with a locking device featuring a pivotable locking disk that pivots between two final positions, allowing a predetermined free motion angle before enabling relative displacement between longitudinal and transverse beams, utilizing a drive device for operation, and incorporating a guide member within an elongated-hole opening to ensure secure locking and unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known locking systems are used, then locking function is provided, but protection against vibrations and shocks is insufficient
Solution Approach 1:
The locking disk is designed to pivot into a dead-center position that preemptively counteracts the effects of vibrations and shocks before they can cause unwanted door opening. The elongated-hole opening and guide member arrangement create a pre-positioned mechanical advantage that resists external disturbances.
Solution Approach 2:
The system incorporates a predetermined free motion angle that allows the locking disk to absorb and cushion the impact of vibrations and shocks through controlled pivoting movement, protecting the locking mechanism from harmful external forces.
2Reliability
If locking mechanisms lock far beyond dead-center position, then locking security improves, but reversing movement causes door leaves to be easily moved in opening direction
Solution Approach 1:
The elongated-hole opening is designed with an asymmetric geometry that provides strong mechanical locking in one direction while controlling the reversing movement. The asymmetric shape ensures the guide member engages optimally during normal operation while preventing easy reversal during unexpected movements.
Solution Approach 2:
The locking mechanism uses dynamic pivoting of the locking disk rather than a static locked position. The disk can pivot within a controlled range, adapting to operational needs while maintaining security, and the drive device dynamically adjusts the locking state as needed.
3Reliability
If known locking devices are used, then locking function is achieved, but larger force is required to overcome dead center than for producing sealing dimensions
Solution Approach 1:
The drive device performs preliminary pivoting of the locking disk to position it optimally before the main locking action occurs. This preliminary positioning reduces the mechanical advantage needed during the actual locking, minimizing the force required to overcome dead center.
Solution Approach 2:
The locking process uses dynamic motion to overcome dead center rather than static force application. The continuous pivoting motion of the locking disk, driven by the drive device, allows the system to pass through the dead-center position with minimal force requirement.
4Reliability
If known locking systems are used, then locking is provided, but production, installation and commissioning result in relatively large costs
Solution Approach 1:
The locking system is segmented into modular components: a pivotable locking disk, an elongated-hole opening, a guide member, and a drive device. This segmentation allows for simplified manufacturing of individual parts and easier assembly during installation, reducing overall production and commissioning costs.
Solution Approach 2:
The locking disk serves multiple functions: it provides the locking action, absorbs vibrations, and guides the door leaf movement through its interaction with the elongated-hole opening and guide member. This multi-functionality reduces the need for additional separate components, lowering manufacturing and installation costs.
Data Source
AI summary
A door system for a vehicle, such as a rail vehicle, includes a door leaf movable from a closed state to an open state and vice versa. The door system includes a longitudinal beam extending along a longitudinal vehicle axis (X) and having a longitudinal guide in which the door leaf is movably guided; a transverse beam arranged firmly on the vehicle, which extends along a transverse vehicle axis (Y) substantially perpendicularly to the longitudinal beam, wherein the longitudinal beam is movably guided via a guiding device in a transverse guide of the transverse beam; and a locking device configured for blocking a relative displacement between the longitudinal and transverse beams in a locking position and for enabling a displacement of the longitudinal beam relative to the transverse beam in an open position. A door system of this type is more cost-effective and meets higher security standards during locking.