JPH06191272A - Power window driving control device - Google Patents

Abstract

PURPOSE:To provide a power window driving control device discriminating the operating state of a sensor for judging whether a door glass is totally closed, by the normal elevating action of the door glass. CONSTITUTION:In the case of raising a door glass automatically, an automatic/ manual switch 34 is operated in two stages. When the totally closed state is detected by a total closure detecting sensor 58, the driving of a motor 22 is continued for the specified time from this detecting time to perform the tightening of the door glass. When the total closure detecting sensor 58 is not operated normally during the rise of the door glass and placed in the 'on' state in spite of the rising process, the tightening of the door glass is performed immediately, so that an operator swiftly notices the action abnormality of the door glass. The repair, change and the like of the total closure detecting sensor 58 can be thereby performed promptly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when raising and lowering a door glass by a driving force of a motor, determines whether a foreign object is caught by detecting a predetermined overload state of the motor and stops or reverses the driving of the motor. The present invention relates to a power window drive control device that controls driving of a motor so as to perform processing.

[0002]

2. Description of the Related Art In a power window device, a motor is used for raising and lowering a door glass, and by operating a switch provided in a vehicle interior (for example, a door trim), the motor is driven to be fully closed. Alternatively, the door glass is moved until it is fully opened. Here, when the door glass is fully closed, the movement is blocked by the window frame or the like, so that the drive current of the motor increases. If this drive current exceeds a specified value, or if a foreign substance is present on the upward movement trajectory of the door glass and an abnormal current due to the foreign substance being caught is detected, it is possible to stop the motor drive. Has been. In this case, in order to distinguish between the fully closed state and the foreign matter trapped, a fully closed detection sensor that detects that the door glass is near the fully closed state is provided.
The motor is reversed for a predetermined time, and when the motor is fully closed, the driving of the motor is slightly continued to tighten the door glass.

[0003]

However, if the fully closed detection sensor does not operate normally and is always in the fully closed state (for example, in the on state), it operates without any hindrance in the normal door opening / closing operation. Therefore, it is not possible to determine that the full-closed detection sensor is abnormal until the foreign substance is caught (the foreign substance is caught).

In consideration of the above facts, the present invention can provide a power window drive control device which can determine the operating state of a sensor for determining whether or not a door glass is fully closed by a normal door glass raising / lowering operation. Is the purpose.

[0005]

According to a first aspect of the present invention, when a door glass is moved up and down by a driving force of a motor, foreign matter entrapment is determined by detecting a predetermined overload state of the motor to drive the motor. Is a power window drive control device for controlling the drive of the motor so as to perform a trapping avoidance process of stopping or reversing, and a fully closed detection sensor for detecting a fully closed state of the door glass, and while the door glass is rising. The control means for always performing the tightening process for delaying the stop of the motor for a predetermined time when the detection result of the full-closed detection sensor is discriminated to be fully closed.

[0006]

According to the first aspect of the present invention, the fully closed state of the door glass is always detected by the fully closed detection sensor from the time when the raising of the door glass is started. Here, if the full-closed detection sensor is normal while the door glass is rising, if the motor is driven in a predetermined overload state during this rising, it is determined that foreign matter is caught, and a trapping avoidance process is performed.

Here, when the fully closed detection sensor does not operate normally (particularly when it is always in the detection state), it is determined that the door is fully closed while the door glass is rising, and the door glass is subjected to the tightening process. become. For this reason, the rise of the door glass is stopped against the driver's intention, so that the abnormality of the full-closed detection sensor can be quickly determined.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a door 12 on the driver's seat side of a vehicle to which a power window device 10 according to this embodiment is applied, and one door 14 of a rear seat. Inside each door (inside the driver's seat door 12 in FIG. 3), a window regulator unit 16 for raising and lowering the door glass 20 is disposed.

As shown in FIG. 3, the window regulator portion 16 is of a so-called wire type in this embodiment, and is a rotary plate 2 attached to the drive shaft of the motor 22.
A wire is wound around 2A. The end of this wire has a holding channel 2 which supports the lower end of the door glass 20.
4, and the holding channel 24 is attached to the main guide 26 so as to be vertically movable.
As a result, when the motor 22 rotates in the forward and reverse directions, this rotational driving force is transmitted via the wire and the door glass 2
0 moves up and down along the glass guide 18. The configuration of the window regulator unit 16 is not limited to such a wire type, but may be an X arm type or a so-called motor self-propelled type in which the motor itself moves along the rack.

When the door glass 20 is lifted by the motor 22, the peripheral edge portion of the door glass 20 is a rubber weather strip (not shown) in the frame 12A of the door 12.
And the opening of the door frame 12A is closed. Further, when the door glass 20 is moved downward by the rotational driving of the motor 22, the opening of the frame 12A of the door 12 is opened.

The motor 22 includes a door 12 shown in FIG.
Power window master switch 3 attached to 14
0 and the door switch 32 are operated. The door switch 32 is attached to the door 14 other than the driver seat side, and the power window master switch 30 is attached to the door armrest portion 12B of the driver seat side door 12. The power window master switch 30 may be attached at any other position as long as it can be easily operated by the driver sitting in the driver's seat.

The power window master switch 30 includes an auto / manual switch 34 for automatically or manually operating the motor 22 of the door 12 and a door switch 36 (mainly for manually operating the motor 22 of each door 14). In the embodiment, three pieces are arranged. Also, the power window master switch 30
Even if the door switches 32 and 36 are operated, the motor 22
A lock switch 38 is provided to prevent the drive of the.

As the auto / manual switch 34, for example, one that can be operated in two stages in both directions can be applied.
In the case of the one-step operation, the motor 22 of the door 12 is driven only during the operation (manual operation), and the two-step operation causes the motor 22 to be driven until the door glass 20 reaches a predetermined position even when the hand is released from the switch. Is performed (automatic operation).

The motor 22 is driven when the power window master switch 30 or the door switch 32 is operated to rotate the rotary plate 22A (shown in FIG. 3) in either forward or reverse directions to raise the door glass 20. Or it can be lowered.

FIG. 1 shows a power window control unit 50 for controlling the driving of the motor 22 by operating the auto / manual switch 34. The power window control unit 50 is driven by the power supply from the power supply circuit 51. It should be noted that the operation of the door switch 32 has the same configuration and will not be described.

As shown in FIG. 1, the power window controller 50 is connected to a signal line 52 from each switch of the auto / manual switch 34.
Depending on the operating state of the manual switch 34, the motor 2
A drive current for forward rotation and reverse rotation is sent to 2.

The power window control unit 50 includes a current detection sensor 54 for detecting a current when the motor 22 is driven.
Signal line 56 from is connected and door glass 20
A signal line 60 from the fully closed detection sensor 58 for detecting the upper end position (see FIGS. 1 and 2), that is, the fully closed state is connected. The fully closed detection sensor 58 is used for the door glass 20.
Is turned on (high-level signal output) in the vicinity of fully closed, and turned off (low-level signal output) otherwise.

The power window control unit 50 recognizes that the door glass 20 is in the fully closed state when the fully closed detection sensor 58 is turned on, stops the drive of the motor 22, and when the lock current value is reached, the door is closed. It recognizes that the glass 20 is fully opened, and controls to stop the driving of the motor. At the time of fully closing, the drive stop of the motor 22 is delayed for a predetermined time, and the tightening process is performed so that the motor 22 is tightly accommodated in the window frame 12A.

A pinch detection / control circuit 62 is connected to the power window control section 50 by a signal line 64. The entrapment detection / control circuit 62 has a function of sending an abnormal signal to the power window control unit 50 when a foreign object is entrapped while the door glass 20 is rising.

That is, the pinch detection / control circuit 62 is connected to the signal line 56 from the current detection sensor 54 and the signal line 60 from the fully closed detection sensor 58, as in the power window control section 50.

The entrapment detection / control circuit 62 stores a comparative current value for detecting entrapment in advance, and when the door glass 20 is rising, the full-closed detection sensor 58 is turned off and the motor is detected. When the drive current value of 22 exceeds the comparison current value, it is recognized that there is a pinch and an abnormal signal is output to the power window control unit 50.

In the power window control unit 50, when an abnormal signal is input, the driving (normal rotation) of the motor 22 is immediately stopped, and the door glass 20 is slightly lowered (motor 2).
2).

Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG. First, drive control of the power window in the power window control device 50 will be described.

When the door glass 20 is manually raised, the manual up on / off switch is turned on in step 200, a positive determination is made, the process proceeds to step 202, the motor 22 is rotated normally, and the flag F is reset in step 203 ( 0) This allows the door glass 2
0 starts rising. In the next step 204, since the on / off switch for automatic switching is in the off state, a negative determination is made and the process returns to step 200. After that, when the manual up on / off switch is in the on state, step 200,
202, 203, 204 are repeated.

Next, when the hand is released from the manual-up on / off switch 52A, it is turned off, and a negative determination is made in step 200, and the routine proceeds to step 206. In step 206, since the flag F is reset (0), a negative determination is made and the process proceeds to step 209. In step 209, the driving of the motor 22 is stopped, the flag F is reset in step 210 (at this time, the flag F is in the reset state), and the process proceeds to step 212.

In step 212, it is determined whether or not the manual-down on / off switch is turned on. Therefore, a negative determination is made at this time, and the process proceeds to step 214. In step 214, since the flag F is reset, a negative determination is made and the process proceeds to step 216, the drive of the motor 22 is stopped (at this time, the motor 22 is already stopped), and the flag F is set in step 218. After the reset, the process returns to step 200.

After that, if the switch is not operated in the power-on state, the step 20 is repeated until the manual-up on / off switch (step 200) or the manual-down on / off switch (step 212) is operated.
0, 206, 209, 210, 212, 214, 21
6, 218 are repeated (basic flow).

Next, when manually lowering the door glass 20, the manual down ON / OFF switch is turned on in step 212, a positive determination is made, the process proceeds to step 220, the motor 22 is rotated in the reverse direction, and step 22
At 1, the flag F is reset (0). This causes the door glass 20 to start descending. At the next step 222, since the on / off switch 52C for automatic switching is in the off state, a negative determination is made and the process returns to step 212. Thereafter, when the manual down on / off switch 52B is in the on state, steps 212, 220, 221, 222 are repeated.

Next, when the hand is released from the manual down on / off switch 52B, the manual down switch 52B is turned off, and the flow is the same as the above-mentioned power-on state and no switch operation (basic flow).

Here, when the door glass 20 is automatically raised, the auto / manual switch 34 is operated in two steps, so that after the motor starts to rotate normally in step 202, a positive determination is made in step 204 after step 203. Then, the process proceeds to step 224, the flag F is set (1), then the process proceeds to step 225, and it is determined whether or not the fully closed detection sensor 58 detects the fully closed state (the fully closed detection sensor 58 is in the on state). To be done.

If a negative determination is made at step 225, the routine proceeds to step 212, where it is determined whether the auto / manual switch 34 has been operated to the manual down side. That is, even during the automatic ascent, when the manual down on / off switch 52B is turned on, the motor 22 is immediately reversely rotated and the above-described manual down operation is performed.

If the determination in step 212 is negative, the automatic operation is continued and the process proceeds to step 214. In step 214, since the flag F is set, an affirmative determination is made, the process returns to step 225, and the following steps 225,
Repeat steps 212 and 214. Here, if an affirmative determination is made in step 225, it is determined whether or not a predetermined time has elapsed after shifting to step 227. That is, the drive of the motor 22 is continued for a predetermined time from the fully closed state, and the door glass 20
Re-tightening processing is performed. If an affirmative decision is made in step 227, the routine proceeds to step 209, where the driving of the motor 22 is stopped, and the flag F is reset in step 210.
After that, the basic flow described above is performed.

When the door glass 20 is automatically lowered, the auto / manual switch 34 is operated in two steps, and after the motor starts to rotate normally in step 220, a positive determination is made in step 222 through step 221. Go to step 228, set flag F (1)
After that, the process proceeds to step 230 and the motor drive current Im
Uptake, and compares the detection level I _L corresponding to the motor drive current Im and the motor lock current in step 234 (Im: I _L).

If Im <I _L at step 234, the routine proceeds to step 200, where it is judged if the auto / manual switch 34 has been operated to the manual up side. That is, even during the automatic lowering, when the manual-up on / off switch 52A is turned on, the motor 22 is immediately rotated in the forward direction, and the above-described manual-up operation is performed.

If the determination in step 200 is negative, the automatic operation is continued and the routine proceeds to step 206. In step 206, since the flag F is set, an affirmative determination is made, and the process returns to step 230.
234, 200 and 206 are repeated. Here, when Im ≧ I _L is determined in step 234, it is determined that the door glass is fully opened, and the process proceeds to step 216 and the motor 2 is operated.
2 is stopped, and the flag F is reset in step 218. After that, the basic flow described above is performed.

Here, the entrapment detection / control circuit 62 in the power window control circuit 50 detects the entrapment of foreign matter. The entrapment detection routine will be described below with reference to the flowchart of FIG.

In step 250 shown in FIG. 5, it is judged whether or not the door glass 20 is fully closed. If a negative judgment is made, the routine proceeds to step 252, where the motor drive current Im is taken in, and in step 254 the motor drive current Im is taken. Im is compared with the comparison current Ic stored in advance (Im: Ic).

If Im <Ic is determined in step 254, it is determined that the motor 22 is normally driven, and the process ends. In step 254, I
If it is determined that m ≧ Ic, it is determined that a foreign substance is trapped, and the process proceeds to step 256 to output an abnormal signal. That is, when the door glass 20 is not fully closed and the abnormal current is detected, it is determined that the foreign matter is caught, and the abnormal signal is output to the power window control circuit 50.

When the entrapment detection / control circuit 62 detects entrapment of foreign matter, an abnormal signal is output to the power window control circuit 50. In the power window control circuit 50, when an abnormal signal is input, an interrupt is immediately issued and the pinch interrupt control shown in FIG. 7 is entered.
The trapping interrupt routine will be described below.

As shown in FIG. 6, in step 300, the driving of the motor 22 is stopped, and then in step 30.
At 2, the motor 22 is reversed. As a result, the door glass 20 which is being raised is lowered, and the foreign matter that has been caught is not clamped by the door glass 20 and the window frame 12A with a strong force, and damage and the like can be prevented.

In the next step 304, it is judged whether or not a predetermined time has elapsed, and if an affirmative judgment is made, step 30
In step 6, the drive (reverse rotation) of the motor is stopped. As a result, the door glass 20 is stopped in a state of being lowered by a predetermined amount (about 50 mm), and the foreign matter can be easily taken out.
After that, when the operation is prohibited for a certain period of time in step 308, and the closing operation input (manual up switch ON state) is continued (negative determination in step 310).
Returns to step 308 and prohibits the closing operation until there is no closing operation input (affirmative determination in step 310). When the entrapment control is completed, the flow returns to the basic flow of the main routine of FIG.

As described above, in this embodiment, the fully closed detection sensor 58 does not operate normally while the door glass is moving up, and when it is turned on even when the door glass is moving up, the door glass is tightened immediately. Therefore, the driver can quickly notice the abnormal operation of the door glass. Therefore, it is possible to promptly perform processing such as repair and replacement of the fully closed detection sensor 58.

If the tightening process is performed while the door glass is rising, the door glass 20 cannot be fully closed.
It is possible to fully close the switch by repeatedly operating the switch several times.

Although the power window device 10 is provided with the automatic / manual switch 34 in the driver's seat in the present embodiment, it is possible to operate only the manual operation such as the operation of the door switch 32 other than the driver's seat. Applicable. The operating state of the door glass during manual operation will be described below with reference to the flowchart of FIG.

When the door switch 32 is operated to the manual close-up side, an affirmative decision is made in step 350, and it is decided in step 352 whether or not the fully closed door glass of the fully closed detection sensor 58 is detected. If an affirmative decision is made here,
The process proceeds to step 354, and the tightening process is executed. When a negative determination is made in step 352, the process proceeds to step 356, the drive current of the motor 22 is detected, and in step 358, it is determined whether or not the drive current of the motor 22 is abnormal. When a negative determination is made in step 358, the process proceeds to step 350, and the raising of the door glass is continued. If a positive determination is made in step 358, it is unknown whether the abnormal current due to the entrapment of a foreign object or the abnormal current due to full closure is detected. Therefore, the process proceeds to step 360 and the full closure detection sensor 58 detects full closure. Whether or not it is determined again, and if a positive determination is made, it is determined that the valve is fully closed and the routine proceeds to step 354 where the tightening process is performed. Also,
When a negative determination is made in step 360, it is determined that the foreign matter is trapped, and the process proceeds to step 362 to execute the foreign matter trapping process.

In this way, by constantly judging the detection state of the full-closed detection sensor 58, when the door does not operate normally, the tightening process of the door glass is immediately performed.
The driver can quickly notice the abnormal operation of the door glass.

[0047]

As described above, the power window drive control device according to the present invention can determine the operating state of the sensor for determining whether or not the door glass is fully closed by the normal operation of raising and lowering the door glass. Has excellent effect.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a power window drive control device according to an embodiment.

FIG. 2 is a perspective view of a vehicle door as viewed from the inside of the vehicle.

FIG. 3 is a perspective view showing an internal structure of a driver side door.

FIG. 4 is a control flowchart in a power window control circuit.

FIG. 5 is a control flowchart showing an entrapment detection control routine in an entrapment detection / control circuit.

FIG. 6 is a control flowchart showing an interrupt routine at the time of detection of entrapment in the power window control circuit.

FIG. 7 is a power window operation control flowchart at the time of manual up.

[Explanation of symbols]

 10 power window drive control device 22 motor 50 power window control device 58 fully closed detection sensor

Claims (1)

[Claims] 1. When a door glass is moved up and down by a driving force of a motor, a foreign matter trapping is detected by detecting a predetermined overload state of the motor, and a trapping avoidance process of stopping or reversing the driving of the motor is performed. Is a power window drive control device for controlling the drive of, a full-closed detection sensor for detecting the fully closed state of the door glass, and the detection result of the full-closed detection sensor is always determined while the door glass is rising. A power window drive control device comprising: a control unit that performs a tightening process that delays the stop of the motor for a predetermined time when it is determined that the motor is stopped.