Vehicle Door Actuation with Pre-Operation Warning
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Solution Overview
Problem
Existing vehicle door opening and closing systems require manual operation, leading to user burden, potential safety hazards due to asynchronous motor driving and jerky movements, and increased risk of accidental door opening/closing, especially on inclined surfaces.
Innovation Solution
A vehicle door opening and closing system that includes a controller generating instructions for a motor and an announce mechanism to provide a notice before operation, ensuring the door is fully latched and using synchronous motor control to prevent pinching and enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual door opening and closing operation is used, then device complexity is reduced, but user burden increases and safety decreases
Solution Approach 1:
The door opening and closing system operates automatically without requiring user intervention. The control unit detects door state through switches and autonomously controls motor-driven latch mechanisms to open or close doors, eliminating manual operation burden while maintaining system simplicity through self-monitoring capabilities.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated electromechanical system. Motors drive the latch mechanisms instead of human hands, and electronic sensors detect door states instead of manual observation, reducing user burden while managing complexity through integrated control electronics.
2Device complexity
If a single motor is used for door opening and closing, then device complexity is reduced, but manufacturing precision and movement smoothness deteriorate
Solution Approach 1:
The door opening and closing system is divided into multiple independent motor-driven latch mechanisms, with each motor controlling a specific latch. This segmentation allows precise independent control of each latch position, improving overall door positioning precision while managing system complexity through modular architecture.
Solution Approach 2:
The control unit independently adjusts operational parameters such as motor speed, torque, and timing for each motor-driven latch mechanism. By changing these parameters dynamically, the system achieves smooth coordinated movement and precise positioning of multiple latches simultaneously, resolving the precision issue without requiring excessive mechanical complexity.
3Productivity
If automatic door opening and closing operation is implemented without notice, then productivity is improved, but safety deteriorates due to unexpected door movement
Solution Approach 1:
The control unit activates announcement output devices (such as audio or visual alerts) before executing door opening or closing operations. This preliminary warning action informs occupants of the impending automatic door movement, allowing them to take protective measures while maintaining the efficiency of automated operation. The notice period is timed to provide sufficient warning without significantly delaying the door operation.
Data Source
AI summary
The invention provides a vehicle door opening and closing system for making a notice before opening and closing a door by using a motor to enhance the safety. The inventive is a door opening and closing system mounted on a vehicle including a controller generating and sending a first instruction and a second instruction, a motor controlled by the controller so as to open or close the door and an announce mechanism controlled by the controller. The first instruction instructs the motor to drive after a predetermined wait time from the generation of the first instruction; and the second instruction instructs the announce mechanism to announce generation of the first instruction for a predetermined notice time before starting to drive the motor.