JPS60119883A - Safety apparatus for power window - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a power window equipped on a vehicle, etc., in which the windshield is automatically raised and lowered by a motor drive, and in particular, the present invention relates to a power window equipped on a vehicle etc. in which the windshield is automatically raised and lowered by a motor drive. This invention relates to a power window safety device that prevents fingers and the like from being caught by the windshield.

Prior Art This type of safety device for power windows has been developed since 1973.
-87858 and Special Publication No. 51-9972 n'
fI: , 0 In all of these conventional examples, a sensor is provided at the upper part of the sash. When an obstacle such as a finger is caught between the two, the sensor is activated to stop the windshield from rising.

However, in the case where the sensor is installed on the satchel side, when an obstacle is caught between the satchel and the windshield and a sufficient pressing force is applied to activate the sensor, This is the first time that the windshield is stopped rising, and even if the windshield is stopped or the windshield is moved down from this stop, the obstacles, such as the nine fingers, must be held with a strong pressing force.
This is extremely dangerous. In particular, if a side visor is provided, the obstacle will hit the side visor before it hits the satchel, and the sensor will be activated, causing the obstacle to be strongly pinched between the side visor and the window glass. OBJECT OF THE INVENTION In view of the above-mentioned conventional problems, the present invention is designed to prevent the obstacle from rising by stopping the glass rising when the obstacle comes into contact with the upper end of the windshield when the windshield is rising. OBJECT OF THE INVENTION In order to achieve this object, the present invention has been made In a power window in which the windshield is raised and lowered by a motor drive, a touch sensor detects when an obstacle such as a finger comes into contact with the top edge of the windshield and issues a detection signal. It is advantageous to provide a sensor and a control circuit that stops the windshield from rising based on a detection signal from the touch sensor.

Example Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

That is, FIGS. 1 to 5 show a safety device for a power window showing an embodiment of the present invention, and this safety device is formed at the upper end of the windshield as shown in FIG.
A touch sensor J is installed in the recess core a.

This touch sensor is 3! @3 As shown in Figure 3, there is a pair of electrodes ≠, ufL fixed to the end of the window glass, 2, Jl, and a pressurized energized rubber S placed across these electrodes ≠, Va. The electrodes are composed of three, and these electrodes are made up of two types of electrodes:

A transparent rubber body such as A7'C silicone rubber is coated on the upper end of the wind glass and is embedded inside the pressurized energized rubber 5t. When an obstacle comes into contact with the upper end of the rubber body t and pressurizes the energized rubber S, the electrodes q and ψa are short-circuited. Said electrode 6. The ua is connected to the ftt control circuit IO, which will be described later, through wiring 7, 7a'i7, which is coated at an inconspicuous location such as the side edge of the windshield 2 and at a location that does not come into contact with the sash (not shown). There is. The control circuit 10 is constructed as shown in FIG. That is, the city control circuit 10 is connected to the switches for raising and lowering the windshield glass, so that when one is ON, the other is OFF (the illustrated position indicates a neutral state).
, the state of the rising switch // is the 1st NAND.

One input of the circuit 13 and the output of the NAND circuit are connected to the ON terminal of the down switch /2 through the resistor tuf, and the ON terminal of the up switch l/ is connected through the resistor lS to the ON terminal of the down switch /2. Connected to the base of control transistor/A
At the same time, the ON terminal of the lowering switch foot is connected to the second NAND circuit/7. It is connected to the down control transistor 19 through a resistor /l'5.Furthermore, the ON terminal of the down switch /A is connected to the base of the up control transistor /A through a diode O. 2/
is the third. Fourth NAND circuit 7j.

The touch sensor 3 is connected to the input side of the third NAND circuit 2.2 of the flip-flop 2/, and the output of the third NAND circuit 74 is connected to the first NAND circuit 2. It is designed to be input to circuit/3. tfc, the output side of the third NAND circuit -) is connected to the capacitor yt via a resistor 21I,
Moreover, the output terminal of the NAND circuit is connected to the base of the discharge transistor U. Furthermore, the capacitor 2
A transistor 270 is connected between the resistor 21I and the base of the transistor 270. The collector of the transistor is connected to the input side of the fourth NAND circuit F3 of the flip-flop F/F. Figure 5 is Wind Crow, 2
A drive circuit jQ that reverses the motor M for raising and lowering the
, and the first one for the upward drive. second transistor, 1
The base sides A and B of / and -2 are connected to the emitter and collector sides A and B of the rise control transistor /A of the control circuit 10, and the third base side A and B for fall drive. 4th) Ranjistor? J.? The base side of 41 is the emitter of the drop control transistor 19, and the collector side 0. There is a DiC connection.

Furthermore, the aforementioned drive circuit? O indicates a transistor, as shown in FIG. 6, and 7/.

, Mayu, 7da, a relay configuration using relay contacts instead of the loincloth may be used as a mental drive circuit.

With the above configuration, flip-flop? / or in the reset state, that is, the NAND circuit, when the dove exit is at L (low) level, when the rise switch 11 is turned ON, the power supply is passed through the entire resistor 13 to the base of the rise control transistor /6. , this rise control transistor /l is O
The first .N of the drive circuit ')O is 2nd) transistor, 1. 2, the motor M is rotated forward, and the window glass 2 is raised. Next, when the lowering switch /q is fully turned on after going through the neutral state, the raising control transistor 761 is forcibly turned off via the diode 2Qf, and the input of the second NAND circuit 17 is also turned on. It becomes L level and the output of the second S/D circuit/7 becomes T((
high) level.

As a result, the lowering control transistor 19 is turned on, and the drive circuit 70 is turned on. 4th transistor ri, 3rd ri'1
ON1 reverses the motor M and lowers the wind crow. Note that when the rising and falling switches // and /2 are in the neutral state shown in the figure, the transistors /6. /
The windshield glass is stationary at the neutral setting position with both the windshield and the windshield in the off state.

By the way, when the windshield glass is rising and the occupant is putting out nine fingers due to the force of the window, if the upper end of the windshield glass comes into contact with an obstacle such as one finger, the touch sensor J will be activated at the moment of this contact. When turned on, the input side of the eighth NAND circuit, 2j, becomes L level. This allows flip-flop 2/
is set, and the outputs of two of the third NAND circuits become H level. Therefore, the input to the first NAND circuit 13 is n
is at H level, the output of the first NAND circuit 13 is at L level, and the input to the second NAND circuit/7 is connected to the resistor/IA.
It becomes L level through i. At this time, the base of the rise control transistor/6 goes through the diode 20 to the L level, and the rise control transistor/6 turns off at the same time as the fall control transistor/de turns on, causing the window glass to rise. to stop. Mako, said 2nd
Since the input to the NAND circuit 17 is at L level, the output of the second NAND circuit/7 is at H level, and the drop control transistor // is turned on.
21il". On the other hand, the touch sensor 3 is
When N, the capacitor J is charged via the resistor 7a'6 by the H level output of the third NAND circuit F2. When the voltage across the capacitor 2 rises and reaches a predetermined voltage, the transistor 27 is turned on and the flip-flop is reset to 1/4. This flip-flop, 2
While / is set and returns to reset, the windshield J is lowered even when the raising switch // is in the ON state, and one finger or the like can be easily retracted. Also,
When the touch sensor 3 is turned on, the flip-flop 21 is turned on.
While it is being set, even if you notice that one finger is being pinched and accidentally press the switch //, /:l in any direction, the window lower glass will descend and the finger will be pinched. The danger of this happening is unavoidable. By the way, the capacitor j
After charging t't,7'2, the flip-flop 7/
At the same time as resetting, the discharging transistor 140 is turned on and discharged, thereby preventing the flip-flop from being accidentally set. 9. While the touch sensor J maintains the ON state, that is, while an obstacle is in contact with the upper end of the windshield, the flip-flop 31 is forcibly set and the windshield 2 continues to descend. 0 In addition, when the window glass is normally raised 1 and closed at the shutter R, as shown in Figure 1, the window glass is closed at the shutter R. Stoppers 7 are provided that abut against both ends of the upper end of the windshield in the longitudinal direction of the vehicle, and the touch sensor 3 is prevented from being turned on by the touch sensor R. Therefore, the window glass is reliably closed without being lowered by the touch sensor, and the airtightness of the interior and exterior of the vehicle is ensured.

By the way, in this embodiment, the touch sensor J is housed in the fourth part Ja of the window glass, but the touch sensor tl is attached to the upper end of the window glass, which is not provided with the recessed part. Even in this case, the touch sensor is covered with a transparent rubber body.
Ru.

It should be noted that the safety equipment R/ of this embodiment is meant to be provided on the front and rear windows, but it goes without saying that it can also be applied to the window glass of a sunroof.

DETAILED DESCRIPTION OF THE INVENTION To be sure, the power window safety device of the present invention is provided with a touch sensor at the upper end of the windshield, and when an obstacle such as nine fingers comes into contact with the touch sensor when the windshield is raised, Since the windshield is stopped from rising, the obstacle is not caught between the windshield and the sash, and safety is significantly improved.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram showing an embodiment of the power window safety device of the present invention, Fig. 2 is a W circuit diagram in Fig. 1, and Fig. FIG. 6 is a circuit diagram showing one embodiment of the drive circuit. FIG. 6 is a circuit diagram showing another embodiment of the drive circuit. /...Safety device for power windows, Co...Wind glass, 3...Touch sensor,! ...Satush, 1
0...Control circuit, ,2(7,lIo...Drive circuit 5M...Motor.

Claims (1)

[Claims] (1) In a power window in which the windshield is raised and lowered by a motor drive, a detection signal is generated when an obstacle such as a finger comes into contact with the upper edge of the windshield. A safety device for a power window, comprising a touch sensor and a control circuit that completely stops the windshield from rising based on a detection signal from the touch sensor.