Vehicle Door Handle Safety Device with Dual Blocking Protuberances
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Solution Overview
Problem
Existing vehicle door handle safety devices may fail to block the activation element in time during high acceleration collisions, leading to doors opening unintentionally due to delayed rotation of the blocking element.
Innovation Solution
A safety device with a dual blocking protuberance system, where the first protuberance blocks early if the blocking element moves quickly, and the second protuberance provides a secondary block if the first is late, ensuring the activation element is intercepted even under high acceleration conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single blocking protuberance is used, then the device complexity is reduced, but the reliability of blocking the activation element during high acceleration collisions deteriorates
Solution Approach 1:
The blocking element is segmented into two distinct blocking protuberances (first blocking protuberance and second blocking protuberance) positioned at different locations. Each protuberance is responsible for blocking the activation element under specific rotation conditions, ensuring comprehensive coverage of blocking scenarios without requiring a single complex blocking mechanism.
Solution Approach 2:
The blocking element is pre-configured with two blocking protuberances at predetermined positions during manufacturing. This preliminary arrangement ensures that regardless of the activation element's rotation speed or position during a collision, there is always a blocking protuberance ready to intercept and block it, eliminating the need for complex real-time decision-making or adjustment mechanisms.
2Reliability
If the blocking element rotates quickly to block the activation element early, then the door closure reliability is improved, but the risk of the blocking element being too late to block increases under high acceleration conditions
Solution Approach 1:
The blocking function is segmented into two temporal phases: early blocking by the first blocking protuberance and late blocking by the second blocking protuberance. This segmentation ensures that whether the activation element rotates quickly or slowly, there is always a blocking protuberance positioned to intercept it at the appropriate moment, eliminating dead time or response delays.
Solution Approach 2:
The system provides beforehand cushioning by having the second blocking protuberance positioned as a backup blocking mechanism. If the first blocking protuberance fails to block the activation element in time during high acceleration collisions, the second blocking protuberance is pre-positioned to provide immediate backup blocking, cushioning against the potential harm of delayed blocking response.
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
Enhances the reliability and efficiency of the safety device by ensuring the activation element is blocked in both early and late scenarios, maintaining door closure during crashes, thereby improving vehicle safety.
Implementation Method 1
The blocking element comprises an inertial mass and a blocking part, wherein the blocking part is configured to intercept a stop of the activation element during a collision.
Data Source
AI summary
The present disclosure relates to a safety device for a vehicle door handle. The device includes an activation element configured to activate a latch by rotating from a rest position to an activation position and includes at least one activation protuberance. The device also includes a blocking element having first and second blocking protuberances and being configured to rotate between a disengaged position in which the blocking element allows the activation element to rotate, and first and second blocking positions in which the first or second blocking protuberance interact with the activation protuberance so as to block the activation element in a first or second intermediate positions disposed between the rest and activation positions of the activation element in case of a crash. The present disclosure further relates to the corresponding vehicle door handle and vehicle.