Vehicle Sliding Door Opening Prevention Mechanism
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Solution Overview
Problem
Sliding doors in vehicles may unintentionally open due to inertia or weight when the vehicle moves, posing a risk of passengers falling out, especially when the door is not properly secured.
Innovation Solution
An opening prevention device that includes a vehicle movement detection unit, a door opening prevention unit, and an opening prevention latch, which engages with the door opening prevention unit to prevent the sliding door from opening when the vehicle moves, using a gyro sensor to detect vehicle movement and a drive motor to rotate a striker to engage the latch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sliding door is allowed to open freely for passenger access, then ease of operation is improved, but safety deteriorates when the vehicle moves with the door partially ajar
Solution Approach 1:
The system performs preliminary detection of vehicle movement state before the door opening becomes a safety hazard. The movement detection unit detects vehicle motion in advance, and the control unit activates the door opening prevention unit proactively, preventing the door from opening during vehicle operation before any accident can occur.
Solution Approach 2:
The door opening prevention unit acts as an intermediary mechanism between the sliding door and the vehicle body. It includes a prevention latch that can engage with a latch groove to physically block door opening, and a prevention motor that drives the latch engagement/disengagement based on vehicle movement detection, serving as a mediator that selectively restricts door operation.
2Reliability
If a door opening prevention mechanism is added to ensure safety, then passenger safety is improved, but device complexity increases
Solution Approach 1:
The door opening prevention unit integrates multiple functions into a single compact mechanism. It combines the prevention latch for physical blocking, the prevention motor for actuation, and the control unit for intelligence, allowing one integrated system to perform both normal door operation control and safety prevention functions.
Solution Approach 2:
The system achieves a degree of self-service through automatic operation. The movement detection unit automatically detects vehicle motion, the control unit automatically activates the prevention mechanism, and the prevention latch automatically engages or disengages without requiring manual intervention from passengers or drivers, reducing the perceived complexity for users.
3Ease of operation
If the door latch is released for normal operation, then ease of operation is improved, but the door may open unintentionally due to inertia or weight when the vehicle moves
Solution Approach 1:
The system applies preliminary anti-action by detecting vehicle movement and activating the door opening prevention unit before inertia or weight can cause the door to open unintentionally. The prevention latch engages in advance to counteract the harmful effects of vehicle motion on the released door latch.
Solution Approach 2:
The door opening prevention unit dynamically adjusts its state based on vehicle movement conditions. The prevention latch can be engaged or disengaged flexibly according to real-time vehicle motion detection, allowing the system to adapt between normal operation mode and safety prevention mode, rather than being fixed in one state.
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
Effectively prevents the sliding door from opening when the vehicle is in motion, even if it is partially ajar, thereby enhancing passenger safety by ensuring the door remains closed during vehicle operation.
Implementation Method 1
A gyro sensor may be used as the vehicle movement detection unit
Data Source
AI summary
An opening prevention device for a sliding door which is slidably installed in a side surface of a vehicle is provided. The opening prevention device includes a vehicle movement detection unit that is installed within a vehicle body of the vehicle and is configured to detect movement of the vehicle, and a door opening prevention unit that is installed in the vehicle body and configured to prevent lateral translation of the sliding door when the vehicle movement detection unit detects movement of the vehicle. Additionally, an opening prevention latch is installed on the sliding door to be engageable with a portion of the door opening prevention unit.