Drive control device for opening/closing member
First Claim
1. A drive control device for controlling a driving mechanism active to move an opening and closing member in first and second directions, comprising:
- resistance detecting means which outputs a closing resistance value which varies in accordance with a detected resistance acting against movement of said opening and closing member during moving operation thereof;
pinch detecting means, active to terminate moving operation of said opening and closing member when said closing resistance value detected by said resistance detecting means exceeds a predetermined threshold level; and
threshold control means which varies said threshold level in accordance with a moving speed of said opening and closing member.
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Accused Products
Abstract
A drive control device for an opening and closing member is active to optimally adjust a threshold level for pinch detection. Utilizing a speed sensor or the like, the closing speed of the opening/closing member is detected. The value of the closing speed is renewed in accordance with the closing position and stored in memory. Based on memorized data, a predicting circuit derives a future closing speed. To the predicted value there is added an allowed addition value, to permit a threshold level setting circuit to set an appropriate threshold for pinch detection. The allowed addition value is adjusted in accordance with the closing speed of the opening/closing member by a threshold level adjusting circuit.
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Citations
10 Claims
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1. A drive control device for controlling a driving mechanism active to move an opening and closing member in first and second directions, comprising:
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resistance detecting means which outputs a closing resistance value which varies in accordance with a detected resistance acting against movement of said opening and closing member during moving operation thereof; pinch detecting means, active to terminate moving operation of said opening and closing member when said closing resistance value detected by said resistance detecting means exceeds a predetermined threshold level; and threshold control means which varies said threshold level in accordance with a moving speed of said opening and closing member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification