Remote Vehicle Access System Window Lowering Mechanism
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Solution Overview
Problem
Conventional vehicle access systems cause excessive wear on door seals and weather strips due to window lowering after the door is unlatched, leading to improper seals and potential damage from external substances entering the vehicle.
Innovation Solution
A remote access system using a key fob to detect proximity and contact with the door handle, communicating with sensors to lower the window a predetermined amount before door opening, reducing wear on seals and weather strips by anticipating door opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the window is lowered after the door is unlatched and partially opened, then the door seal components experience wear, but the seal integrity deteriorates
Solution Approach 1:
The system performs preliminary action by lowering the window before the door is actually opened. The control system detects when the door is unlatched and automatically lowers the window a predetermined distance, separating it from the weather strip before door opening occurs. This preliminary window lowering prevents excessive wear on the weather strip during subsequent door opening operations while maintaining proper seal integrity when the door is closed.
2Ease of operation
If the window is lowered to facilitate door opening, then ingress and egress are enhanced, but wear on weather strip increases
Solution Approach 1:
The system applies preliminary action by automatically lowering the window before door opening is initiated. The control system monitors door latch status and, upon detection of unlatched condition, commands the window actuator to lower the window a predetermined distance. This preliminary separation of the window from the weather strip eliminates excessive wear during door opening while preserving enhanced ingress and egress functionality.
Solution Approach 2:
The system implements self-service by using the door's own unlatched state as the trigger signal for window lowering. The control system automatically detects when the door latch is released and autonomously commands the window actuator to perform the necessary separation, eliminating the need for manual window operation and preventing wear without requiring additional user action.
3Ease of operation
If conventional access systems lower windows after door unlatching, then door opening is facilitated, but seal components experience excessive wear
Solution Approach 1:
The invention applies preliminary action by lowering the window before door opening occurs. The control system detects the unlatched door state and automatically commands the window actuator to lower the window a predetermined distance, separating it from the weather strip. This preliminary separation prevents excessive wear during door opening operations, thereby extending the service life of the weather strip while maintaining facilitated door opening.
Data Source
AI summary
A remote access system is configured for use with a fob configured to lock and unlock a vehicle, the vehicle including a door having a handle, a window, and a window actuator. The system includes a position sensor configured to detect proximity between and relative position of the fob and the door of the vehicle. The remote access system also includes a contact sensor configured to detect contact with the handle. The system further includes a processor configured to communicate with the position sensor and the contact sensor to lower the window a predetermined amount that facilitates opening of the door via the window actuator upon the processor determining: 1) the handle has been contacted, and 2) the fob is disposed at a specified position relative to the door of the vehicle.