Sliding Door Control Apparatus Latch Interference Prevention
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Solution Overview
Problem
Vehicle opening-closing body control systems face issues with smooth restarting of sliding door driving control due to temporary power source voltage reductions and potential latch mechanism interference, especially in compact vehicles with limited power capacity.
Innovation Solution
A vehicle opening-closing body control apparatus with a control device that determines the movement position of the sliding door and performs a release action on the latch mechanism when it is in an engagement position, allowing for smooth restart of driving control and avoiding interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driving control of the sliding door is stopped when power source voltage is reduced, then power consumption is reduced and stability is improved, but the opening-closing action cannot be completed smoothly and requires restart after voltage recovery
Solution Approach 1:
The control device performs preliminary actions by determining the movement position of the sliding door before restarting driving control after voltage recovery. It checks whether the latch mechanism is in an engagement action position and releases the latch mechanism in advance if needed, preventing interference during the restart of opening-closing action.
2Ease of operation
If the driving motor is set to break state with electromagnetic clutch connected when driving control is stopped, then the sliding door movement is regulated, but external forces exceeding break force can change the movement position and cause latch mechanism engagement
Solution Approach 1:
The control device implements feedback by continuously monitoring the movement position of the sliding door even after driving control is stopped. When voltage is recovered and restart is considered, it determines the current position and checks for latch mechanism engagement risk, adjusting control based on this feedback information.
Solution Approach 2:
Before restarting driving control, the control device performs preliminary determination of the sliding door's movement position and checks whether the latch mechanism is in an engagement action position. This preliminary check prevents interference by releasing the latch mechanism in advance if the position indicates potential engagement.
3Ease of operation
If driving control is restarted automatically after power source voltage recovery, then convenience is improved, but latch mechanism interference may occur preventing smooth restart
Solution Approach 1:
The control device uses feedback by determining the movement position of the sliding door before restart and checking the latch mechanism state. This feedback ensures that restart only proceeds when conditions are safe, preventing interference while maintaining automatic restart functionality.
Solution Approach 2:
The control device performs preliminary determination of the sliding door position and latch mechanism state before initiating restart. If the latch mechanism is in an engagement action position, it releases the latch mechanism in advance, ensuring smooth restart without interference.
Data Source
AI summary
A vehicle opening-closing body control apparatus includes: a driving device driving an opening-closing body; a lock device retaining the opening-closing body in fully open and fully closed positions by including a latch mechanism, which performs an engagement action depending on a movement position of the opening-closing body; and a control device controlling the actions of the driving and lock devices, wherein the control device includes a position determination unit determining whether the movement position is in an engagement action position of the latch mechanism in a case in which driving control of the opening-closing body is stopped, and it becomes possible for the driving control to be restarted thereafter, and an engagement release control unit causing the latch mechanism to perform a release action by controlling the action of the lock device in a case in which it is determined that the movement position is in the engagement action position.