| 摘要 |
A window glass in a motor vehicle body is slidable in a vertical direction within a window frame by means of an electric motor (34) controlled by "up" and "down" switches (36, 40). The window glass slides with reference to a window guide channel (11 which incorporates a metal carrier, or other electrical conductor, (14) which receives the output from electrical oscillating means (28). If a part of the human body is present within the frame of the window and within a predetermined distance from the window guide channel (11), the resultant capacitive effect will change the output of the oscillator (28) which is detected by a detecting unit (42) and opens a switch (38). This switch (38) is connected in series with the "up" switch (36) for the window drive motor (34) and thus either stops the motor, if it is driving the window glass upwards, or prevents the window glass from being so driven. |
