Automatic opening and closing device for a window
First Claim
1. An automatic opening and closing device for a window comprising:
- a forwardly and reversely rotatable motor for opening and closing a window; and
control circuit means connected to said motor and including;
switching means for instructing said motor to rotate;
pulse-detecting means for detecting a pulse generated by the rotation of said motor;
counting means for counting pulses detected by said pulse-detecting means and for resetting a count number to a predetermined count number according to a prescribed signal;
holding means for holding the rotation of said motor according to a signal output from said switching means; and
holding-cancel signal generating means for detecting a count number counted by said counting means and for cancelling a holding state of said holding means by generating a holding-cancel signal when the count number reaches a predetermined reference value during an opening operation of the window;
wherein said holding-cancel signal generating means comprises;
a reference value-setting circuit for setting said predetermined reference value corresponding to a car speed; and
a holding-cancel signal generating circuit for comparing the count number counted by said counting means with said predetermined reference value and for outputting said holding-cancel signal when the count number reaches said predetermined reference value corresponding to said car speed.
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Accused Products
Abstract
An automatic opening and closing device for a window which has a forwardly and reversely rotatable motor for opening and closing the widow, switching means which instructs said motor to rotate, pulse-detecting means which detects a pulse generated along with a rotation of said motor, counting means which counts a pulse number detected by said pulse-detecting means and rotation-controlling means which performs rotation-control to said motor on basis of a count number counted by said counting means and a predetermined count number is dislosed, by which it is possible to stop the opening or closing action of the window at a halfway, or possible to convert the action of the window in the reverse direction.
74 Citations
5 Claims
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1. An automatic opening and closing device for a window comprising:
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a forwardly and reversely rotatable motor for opening and closing a window; and control circuit means connected to said motor and including; switching means for instructing said motor to rotate; pulse-detecting means for detecting a pulse generated by the rotation of said motor; counting means for counting pulses detected by said pulse-detecting means and for resetting a count number to a predetermined count number according to a prescribed signal; holding means for holding the rotation of said motor according to a signal output from said switching means; and holding-cancel signal generating means for detecting a count number counted by said counting means and for cancelling a holding state of said holding means by generating a holding-cancel signal when the count number reaches a predetermined reference value during an opening operation of the window; wherein said holding-cancel signal generating means comprises; a reference value-setting circuit for setting said predetermined reference value corresponding to a car speed; and a holding-cancel signal generating circuit for comparing the count number counted by said counting means with said predetermined reference value and for outputting said holding-cancel signal when the count number reaches said predetermined reference value corresponding to said car speed. - View Dependent Claims (2)
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3. An automatic opening and closing device for a window comprising:
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a forwardly and reversely rotatable motor for opening and closing a window; and control circuit means connected to said motor and including; switching means for instructing said motor to rotate; pulse-detecting means for detecting a pulse generated by rotation of said motor; counting means for counting a pulse-number detected by said pulse-detecting means; window position-detecting means for detecting whether or not said window is near to a closed position on the basis of a count number outputted from said counting means; speed operation means for calculating a rotational speed of said motor on the basis of the pulse detected by said pulse-detecting means; speed change operation means for calculating a rate of rotational speed change against a previously measured value of said motor on the basis of an output signal of said speed operation means; window action-detecting means to detect whether said window is in a closing action; reversing instructive signal generating means for reversing said motor for opening said window if an output signal from said speed change operation means exceeds a predetermined first set point when said window action-detecting means detects said window to be in said closing action and said window position-detecting means detects said window to be not near to the closed position; and stop instructive signal generating means for stopping said motor if the output from said speed change operation means exceeds a predetermined second set point when said window action-detecting means detects said window to be in said closing action and said window position-detecting means detects said window to be near to the close position. - View Dependent Claims (4, 5)
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Specification