Vehicle Door Opening Prevention Lock Ring Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional techniques fail to maintain a vehicle door in a locked state during collisions from any direction, potentially allowing occupants to fall out due to impact forces.
Innovation Solution
A door opening prevention apparatus featuring a cable and connection bushing system with a lock ring and spring support unit, which blocks upward movement of the connection bushing during collisions, preventing the door latch from releasing, regardless of collision direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional blocking mechanisms (balance weight, blocking lever) are used to prevent door opening during collision, then side collision protection is improved, but protection against front or rear collision is not achieved
Solution Approach 1:
The opening prevention unit is designed to provide universal protection against door opening from any collision direction (front, rear, side). The lock ring with multiple springs arranged at angular intervals creates a multi-functional system that responds to impact forces from different directions, making the door latch maintenance mechanism applicable to all collision scenarios rather than just side collisions.
Solution Approach 2:
The invention transitions from conventional single-direction or side-collision-specific blocking mechanisms to a multi-dimensional protection system. The lock ring structure with springs positioned at different angular intervals (e.g., 90 degrees apart) creates protection in multiple spatial dimensions, allowing the system to counteract impact forces from any direction by engaging the appropriate spring.
2Reliability
If the door latch is maintained locked during collision to prevent occupant ejection, then safety is improved, but manual opening for rescue after collision is hindered
Solution Approach 1:
The opening prevention unit employs dynamic springs that can be compressed or expanded based on applied forces. During collision, the springs compress to maintain the lock ring in a position that prevents door opening. After collision, when external force is applied to the exterior door handle, the springs can expand, allowing the lock ring to move and enabling manual door opening for rescue operations.
Solution Approach 2:
The system applies preliminary anti-action by using springs to pre-position the lock ring in a way that counteracts potential impact forces before they can cause unwanted door opening. The springs are pre-loaded to create a counterbalancing force that maintains latch engagement during collision, while still allowing controlled release when necessary for rescue.
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 maintains the door latch in a locked state during collisions from any direction, preventing occupant ejection while allowing manual opening post-collision for rescue.
Implementation Method 1
The spring may include a plurality of springs installed at positions spaced apart from each other at a predetermined angular interval, wherein one of the springs (e.g., a first spring) may be installed to be compressed or expanded when a collision occurs with respect to a lateral direction of the vehicle, and another one of the springs (e.g., a second spring) may be installed to be compressed or expanded when a collision occurs with respect to a longitudinal direction of the vehicle.
Implementation Method 2
When an inertia force greater than a preset reference inertia force, over which the inertia force is determined as being caused by a collision, is applied to the spring, the spring may be compressed or expanded and the lock ring may be displaced from the original position.
Data Source
AI summary
An apparatus for preventing a door of a vehicle from opening during a collision is provided. The door includes a cable that is connected to an exterior door handle and a connection bushing that is connected to the cable and coupled to an operating lever. When the exterior door handle is manipulated, the operating lever is moved upward to release a door latch. Additionally, an opening prevention unit is configured to allow the connection bushing to move upward under normal conditions, and when a vehicle collision occurs, the opening prevention unit is displaced from an original position to block upward movement of the connection bushing and prevent the door from opening.