Vehicle Sliding Door Speed Control for Window Catch Prevention
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Solution Overview
Problem
Existing opening and closing control devices for vehicle sliding doors, such as those described in JP2000-240352A, fail to provide adequate user convenience as they stop the sliding door short of full opening when the window is open, potentially causing extraneous materials to be caught between the window frame and the vehicle body, and lack efficient control mechanisms to prevent such catches.
Innovation Solution
The proposed solution involves a power sliding door device with a door ECU that detects the moved position and window state, implementing movement speed reduction control to prevent extraneous materials from being caught by reducing the sliding door's speed when it approaches the fully-open position and using pre-entrance stop control to prevent the door from entering the specific opening range while the window is open.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sliding door stops before the fully-open position when the window is open, then extraneous materials are prevented from being caught, but user convenience is reduced
Solution Approach 1:
The system dynamically adjusts the door opening behavior based on real-time window state detection. When the window is detected to be open, the door applies reduced speed control in the critical range rather than complete retention, allowing flexible adaptation between safety and convenience based on actual conditions
Solution Approach 2:
The control system changes the movement speed parameter of the sliding door based on window state. When the window is open, the door speed is reduced to a predetermined low speed in the specific opening movement range, transforming the door's movement characteristics to prevent catching while maintaining operability
2Ease of operation
If the sliding door releases retention control when the window is open, then user convenience is improved, but extraneous materials may be caught between the window frame and vehicle body
Solution Approach 1:
The control system applies different speed control strategies to different movement ranges. In the specific opening movement range where catching risk exists, reduced speed control is applied locally, while other ranges maintain normal operation, creating localized safety without affecting overall convenience
Solution Approach 2:
The control system introduces an intermediate speed state between complete retention and full-speed operation. This intermediary reduced speed allows the door to move slowly enough to prevent catching while still progressing toward full opening, mediating between safety and convenience requirements
Data Source
AI summary
An opening and closing body control device for a vehicle includes a drive control portion operating a drive control of an opening and closing body by controlling an operation of a drive device, a window portion open state determination portion determining whether a window portion being provided at the opening and closing body is open, and a moved position determination portion determining whether a moved position of the opening and closing body is within a preset specific opening movement range. The drive control portion performs a movement speed reduction control reducing a movement speed of the opening and closing body so as not to exceed a predetermined speed in a case where the moved position of the opening and closing body is within the specific opening movement range.