Power window with detecting function of sticking of foreign matt

Details Power window with detecting function of sticking of foreign matt Power window with detecting function of sticking of foreign matt

1996-08-23

1998-05-19

Ro, Bentsu

Electricity: motive power systems

Motor-reversing

Automatic and/or with time-delay means

318257, 318266, 318434, 318469, 49 28, B60J 108

Patent

active

057540179

ABSTRACT:
To improve the detection reliability in the detection of sticking of a foreign matter and minimize a sticking load, a power window is provided with a window frame sensor disposed along the inner peripheral edge of a window frame and a drive motor for advancing and retreating a window glass in accordance with an external signal. A control circuit makes a duty control for a transistor to decrease the operating speed of the window glass when the pressure detected by the window frame sensor becomes larger than a predetermined value during a closing operation of the window glass. Thereafter, when the drive load of the drive motor exceeds a predetermined value, a relay is switched over to operate the window glass reverse in the opening direction.

REFERENCES:
patent: 5404673 (1995-04-01), Takeda et al.
patent: 5483135 (1996-01-01), Parks
patent: 5621290 (1997-04-01), Heller et al.

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