JPH06346659A - Power window drive control device - Google Patents

Abstract

PURPOSE:To reduce size by a method wherein a switch to prevent reversing of a window glass right before a full closed position and a window glass reversing preventing switch are connected to a control part through a common signal line. CONSTITUTION:During a time in which a window glass is moved from full opening to this side of a position near full closed position, a position switch 7 is turned OFF, and when a nip occurs during the time, a logic wherein movement of a glass is blocked without a position signal is outputted to a control means 10. After the glass passes through the position, the switch 7 is turned ON and when movement of the glass is blocked, a logic wherein a position detecting signal is present and movement of the glass is blocked is outputted to the means 10. When a cancel switch 11 is turned ON simultaneously with a close switch 3, a cancel signal is outputted to the means 10, and the means 10 prevents the increase of friction during movement of the glass from misunderstanding as a nip. Further, since signals from the switches 7 and 11 are both for non-reversion use, the switches are connected to the means 10 through a common signal line 12. This constitution reduces size through reduction of the number of connector poles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window control device used for controlling a motor for driving a windshield of a vehicle by detecting a current position of the windshield.

[0002]

2. Description of the Related Art Conventionally, as a power window control device for controlling a motor for driving a window glass by detecting the current position of the window glass of an automobile,
The one shown in FIG. 4 is known. In the illustrated power window control device 120, when a power window switch (not shown) connected to the motor 100 is turned on, current is supplied to the motor 100, so that the armature shaft 101 rotates. When the armature shaft 101 rotates, the rotational power of the armature shaft 101 is transmitted to the worm wheel 102, and the rotational power of the worm wheel 102 is transmitted to the output shaft 105 via the shock absorbing damper 104. A window glass 107 is connected to the output shaft 105 via a glass elevating mechanism 106, and the rotational power of the output shaft 105 is generated by the glass elevating mechanism 106.
It is converted to the movement of 7 on the fully closed side and the fully open side. A rotation detecting mechanism 108 is attached to the armature shaft 101, and the rotation detecting mechanism 108 serves as the armature shaft 10.
If 1 is rotating, the pulse signal is transferred to the controller 109. A limit switch 11 is turned on when the window glass 107 is located near the fully closed position to near the fully closed position on the door portion supporting the window glass 107.
0 is attached, and when the window glass 107 is blocked from moving due to a finger being caught before the fully closed position while the window glass 107 is moving to the fully closed side, rotation detection is performed although the limit switch 110 is not turned on. Since there is no pulse signal from the mechanism 108, the controller 109 reverses the supply current to the motor 100. Since the controller 109 reverses the current supply to the motor 100, the controller 109 controls the window glass 107 to move from the position where the pinch occurs to the fully open side. Further, a cancel switch 111 is connected to the controller 109, and for some reason the friction between the window glass 107 and the supporting portion of the door becomes large, and the window glass 107 does not move smoothly when moving to the fully closed side. The cancel switch 11 together with the power window switch.
By pressing 1, the reversing of the window glass is not performed, so that the window glass 107 is moved to the fully closed position.

[0003]

In the above-mentioned conventional power window control device 120, the limit switch 110 for judging whether or not the window glass 107 should be inverted.
And the cancel switch 111 that does not invert the window glass are electrically connected to the controller 109 by different signal lines 112 and 113. Therefore, the signal line from the limit switch 110 and the signal line from the cancel switch 111 are different from each other. Due to this, there is a possibility that the connector on the controller side will have multiple poles, and the external shape of the multipole connector will be large, so there is a concern that it may be disadvantageous in terms of the space of the mounting part. The task was to do so.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power window control device in which the number of poles of the connector on the controller side is reduced as much as possible, which is advantageous in terms of space for a mounting portion. I am trying.

[0005]

[Constitution of the invention]

[0006]

SUMMARY OF THE INVENTION A power window control device according to the present invention has an open switch and a close switch which are turned on by an operation of an occupant, and an output shaft connected to a window glass and an open switch or a close switch which is turned on. Connect the power supply to the motor and the motor that is supplied with the current to open or close the window glass to move the window glass within the stroke from the fully closed position to the fully open position via the output shaft. Drive means, rotation detecting means for detecting the number of rotations of the output shaft of the motor to generate a pulse signal, and a position to switch when detecting that the windshield has reached a predetermined position within the stroke of the windshield. Switch and position switch electrically connected to the A reference value memory having a reference time storage means in which a reference cycle time corresponding to the number of rotations is set, and a current value memory having a pulse cycle timer for detecting the rotation state of the motor based on the current cycle time of the pulse signal from the rotation detecting means. And when the close switch is turned on and the current cycle time of the pulse cycle timer becomes longer than the reference cycle time of the reference time storage means when the position switch is not turned on, the window glass is opened to the motor. And a canceling switch electrically connected to the control means for preventing the reverse current supply to the motor by the operation of the occupant. In, the position switch and the cancel switch are connected to the control means via a single signal line. It is characterized by a door.

[0007]

In the power window control device according to the present invention, the window glass is reversed until the window glass reaches the predetermined position, and after the window glass reaches the predetermined position. The position switch that does not invert the window glass and the cancel switch that does not invert the window glass have substantially the same function. Therefore, the position switch and the cancel switch are connected to the control means by a single signal line.

[0008]

1 to 3 show an embodiment of a power window control device according to the present invention.

As is clear from FIG. 1, the power window control device 1 mainly includes an open switch 2 that is switched to a window open side by an operation of an occupant, a close switch 3 that is switched to a window close side by an operation of an occupant, and a window glass ( (See FIG. 5) is connected to the output shaft 4a, and a current for opening the window glass or a current for closing the window glass is supplied by switching the open switch 2 or the close switch 3 so that the window glass is completely removed through the output shaft 4a. A motor 4 that moves within a stroke between a closed position and a fully open position, a drive unit 5 that connects a power source to the motor 4, and a rotation detection unit 6 that detects the number of rotations of the output shaft 4a of the motor 4 and generates a pulse signal. , The window glass is moved to the position near the predetermined closed position within the stroke of the window glass. Then it turned on the position switch 7,
A reference value memory 8 having a reference time storage means 8a in which a reference time corresponding to the drive time of the motor 4 is set, and a pulse cycle timer 9a for detecting the rotation state of the motor 4 by the cycle of the pulse signal from the rotation detection means 6. The control unit 10 is a controller having the present value memory 9 and a cancel switch 11 for preventing the motor 4 from being reversed by an operation of an occupant.

The open switch 2 and the close switch 3 are attached to the armrest portion of the driver's seat door. The open switch 2 is electrically connected to the control means 10 via the open switch signal line 2a via the input interface a, and the open signal generated by being turned on by the occupant is converted by the input interface a to open. It is transferred to the control means 10 and recognized by the switch signal line 2a. The close switch 3 is also electrically connected to the control means 10 via the close switch signal line 3a via the input interface a, and the close signal generated by being turned on by the occupant is converted by the input interface a to close. It is transferred to the control means 10 and recognized by the switch signal line 3a.

The position switch 7 is attached to the driver's seat door supporting the movement of the windshield, and the control means 10 is connected to the common signal line 12 via the input interface a.
Electrically connected to. The position switch 7 is turned on when a window glass reaches near the fully closed position while the window glass is moving toward the fully closed position, and a position detection signal is generated. The generated position detection signal is converted in the input interface a, transferred to the control means 10 through the common signal line 12, and recognized. Here, the vicinity of the fully closed position corresponds to a position having a dimension smaller than a clearance dimension generated when a finger or the like is caught when the window glass is moving toward the fully closed position. While the window glass moves from the fully open position to the position near the fully closed position, the position switch 7 is in the off state and the position detection signal is not generated. Therefore, pinching or the like occurs between them and the movement of the window glass is blocked. If there is no position detection signal and the window glass is blocked from moving, the control means 1
Since the position switch 7 is in the ON state and the position detection signal is generated after the wind glass passes from the fully open position to the position near the fully closed position, if the wind glass is blocked from moving. , The logic that there is a position detection signal and the movement of the windshield is blocked is given to the control means 10.

Like the open switch 2 and the close switch 3, the cancel switch 11 is attached to the armrest portion of the driver's door, and the cancel switch 1
1 generates a cancel signal when it is turned on by the occupant at the same time as the close switch 3, and the generated cancel signal is converted at the input interface a and transferred to the control means 10 through the common signal line 12 like the position switch 7. Will be recognized. Close switch 3
The cancellation signal generated by turning on at the same time as when the window glass is moving to the closing side,
The friction between the door and the door is increased to prevent the control means 10 from erroneously recognizing that the window is pinched.

Here, the position switch 7 is turned on when the window glass passes near the fully closed position to generate a position detection signal, and the cancel switch 11 prevents the window glass from being inverted in the vicinity of the fully closed position. In order to generate a cancel signal for changing the input signal, the position detection signal generated by the position switch 7 and the cancel signal generated by the cancel switch 11 are for non-inversion common to the control means 10, and therefore, via the single common signal line 12. Electrical connection to the control means 10.

When the drive means 5 is turned on to supply a current for opening the window glass or a current for closing the window glass, the motor 4 rotates the output shaft 4a in the forward or reverse direction. When the output shaft 4a is normally or reversely rotated, the window glass is moved toward the fully open position or the fully closed position. The rotation detecting means 6 is connected to the output shaft 4a, and the rotation detecting means 6 generates a pulse signal in synchronization with the rotation of the output shaft 4a, and the pulse signal generated by the rotation detecting means 6 passes through the input interface a. Converted via the pulse signal line 6a to the control means 10
Transferred to.

The driving means 5 is a power source connection switching mechanism such as a relay, and is connected to the control means 10 via the output interface b. The driving means 5 is turned on by a signal from the output stage of the control means 10 to turn on the motor 4. Supply current in the forward or reverse direction.

The control means 10 is attached to the inside of an instrument panel (not shown).
Is equipped with a microcomputer including a reference value memory 8 and a current value memory 9. Reference value memory 8
Is a read-only memory (ROM), and the reference time storage means 8a provided in the reference value memory 8 presets the cycle time of the pulse generated when the motor 4 rotates in a steady state. The set reference cycle time is compared with the current cycle time from the pulse cycle timer 9a, which will be described later, and the current cycle time of the pulse cycle timer 9a is longer than the reference cycle time, whereby the window glass is prevented from moving. Is recognized.

The current value memory 9 is a write / read memory (RAM) at any time, and the pulse cycle timer 9a provided in the current value memory 9 stores the current cycle time of the pulse signal from the rotation detecting means 6 at any time. Therefore, the current cycle time stored by the pulse cycle timer 9b is compared with the reference cycle time of the reference time storage means 8a, and when the current cycle time becomes longer than the reference cycle time, the output shaft 4a of the motor 4 outputs the current cycle time. Recognition of overload.

The control means 10 does not overload the motor 4 while the open switch 2 is on and the current cycle time of the pulse cycle timer 9a is not longer than the reference cycle time of the reference time storage means 8a. Therefore, the drive means 5 is turned on in response to the turn-on of the open switch 2 to supply the current on the window opening side to the motor 4, and the current cycle time of the pulse cycle timer 9a is stored in the reference time storage means. If it becomes longer than the reference cycle time of 8a, it is recognized that the windshield has reached the fully open position based on the overload of the motor 4 moving the windshield to the open side. Therefore, the current supply to the motor 4 is stopped.

Further, the control means 10 overloads the motor 4 while the close switch 3 is in the ON state and the current cycle time of the pulse cycle timer 9a does not become longer than the reference cycle time of the reference time storage means 8a. Therefore, the drive means 5 is turned on in response to the closing switch 3 being turned on, the motor 4 is supplied with current for closing the window glass, and the current cycle time of the pulse cycle timer 9a is set. Becomes longer than the reference cycle time of the reference time storage means 8a, and if the position switch 7 is not in the ON state or the cancel switch 11 is not turned on, the motor 4 moving the windshield to the closing side is selected. It is recognized that the windshield is pinching something because it is overloaded, so the motor Is switched to the current for opening the window glass, the current cycle time of the pulse cycle timer 9a becomes longer than the reference cycle time of the reference time storage means 8a, and the window glass passes near the fully closed position to change the position. When the switch 7 is turned on or the cancel switch 11 is turned on in order to prevent the driver from reversing, the windshield is overloaded on the motor 4 moving the windshield to the closing side. Since it is recognized that has reached the fully closed position, the current supply to the motor 4 is stopped.

In the power window control device 1 having such a structure, the control operation is performed based on the programs shown in FIGS. In this program, steps 30 to 42 are the main routine, and step 4
Reference numeral 3 is an interrupt routine executed prior to the main routine when a pulse signal generated by the rotation detecting means 6 is taken in by the rotation of the motor 4.

When the window glass is fully closed, both the open switch 2 and the close switch 3 are in the off state, and an occupant's operation turns on an ignition switch (not shown) from the off state and at the same time, the power source is connected to the control means 10. Therefore, the main routine is executed, and step 30
Resetting is performed in step 31, each switch signal is taken in in step 31, and it is determined in step 32 whether the close switch 3 is on. Since the close switch 3 is off, the open switch 2 is turned on in step 33. Since it is determined whether or not the open switch 2 is also off, the current supply to the motor 4 is stopped in step 34 and step 31
This routine is repeated until the open switch 2 and the close switch 3 are turned on again after returning to.

When the open switch 2 is turned on when the window glass is in the fully closed position, the determination in step 33 leads to step 35, so step 35
It is determined whether or not the current cycle time of the pulse cycle timer 9a is longer than the reference cycle time (reference time) of the reference time storage means 8b, and if the movement of the window glass is not blocked, the current cycle is determined. Since the time is shorter than the reference cycle time, the process proceeds to step 36, and in response to the turning on of the open switch 2, current is supplied to the motor 4 via the drive means 5 to open the window glass, and the process returns to step 31. Since the motor 4 is supplied with electric current for opening the windshield, the output shaft 4a starts to rotate and moves the windshield toward the fully open position. Since the output shaft 4a of the motor 4 starts to rotate, a pulse signal is generated from the rotation detecting means 6, so that an interrupt routine is executed, and in step 43, the elapsed time from the time of the previous interrupt generation is set to the pulse cycle timer 9b. , And then the process proceeds to step 31 and the main routine is continuously executed. The open switch 2 continues to be turned on, and step 36
When the window glass reaches the fully open position by continuing to supply the electric current to the motor 4 in order to open the window glass, the movement is blocked at the fully open position, so that the output shaft 4a of the motor 4 is also restrained from rotating. The current cycle time of the pulse cycle timer 9a becomes longer than the reference cycle time of the reference time storage means 8a according to the determination in step 35, the process proceeds to step 37, and the current supply to the motor 4 is stopped in step 37. The glass is stopped at the fully open position, and the process returns to step 31.

When the occupant turns on the open switch 2, in response to the time when the open switch 2 is turned on, the window glass is moved to the fully open position, and when the window glass reaches the fully open position, the current supply to the motor 4 is stopped. Since the suspension is canceled, the occupant is notified that the windshield has reached the fully open position, and the off operation of the open switch 2 is prompted.

When the occupant turns on the close switch 3 while the windshield is in the fully open position, the switch signal is fetched in step 31, step 32.
At step 38, the current cycle time of the pulse cycle timer 9a is set to the reference time storage means 8 because the close switch 3 in step 3 determines whether or not the close switch 3 is on.
It is determined whether or not it is longer than the reference cycle time of a. Since the motor 4 is not driven, the process proceeds to step 39 to turn on the driving means 5, and in response to the closing switch 3 being turned on, the driving means 5 is operated. Electric current is supplied to close the window glass, and the process returns to step 31.

Since the motor 4 is supplied with electric current for closing the windshield, the output shaft 4a starts rotating and moves the windshield toward the fully closed position. Since the output shaft 4a of the motor 4 starts rotating, a pulse signal is generated from the rotation detecting means 6, so that the interrupt routine is executed,
In step 43, the elapsed time from the occurrence of the previous interrupt is stored in the pulse cycle timer 9a, and then the process returns to step 31.

When the windshield is moving toward the fully closed position in response to the closing switch 3 being turned on, if the windshield is caught near something near the fully closed position and is blocked from moving, Based on the determination in step 38, the current cycle time of the pulse cycle timer 9a is the reference time storage means 8
Since it becomes longer than the reference cycle time of a, it moves to step 40 and it is judged whether or not the position switch 7 or the cancel switch 11 is in the ON state, and the window glass reaches only before near the fully closed position. So position switch 7
Since it has not been turned on, the routine proceeds to step 41, where the drive means 5 is turned on to supply the motor 4 with an electric current for opening the reversed window glass, which is contrary to the close switch 3, and then returns to step 31. The window glass that has moved toward the fully closed position in response to the close switch 3 is instantaneously inverted and moved to the fully open side from the position where the window was caught, so that the trapping is eliminated.

When the close switch 3 is turned on, the window glass continues to move toward the fully closed position without being pinched, and when the window glass passes near the fully closed position, the position switch 7 is turned on from the off state. Since the position detection signal is generated and the position detection signal is transferred to the control means 10 through the common signal line 12, the determination in step 32 proceeds to step 38, the determination in step 38 proceeds to step 40, and the step Since the process proceeds to step 42 when the determination in step 40 is made, the current supply to the motor 4 is stopped, the window glass is stopped at the fully closed position, and the process returns to step 31.

Further, when the occupant having the close switch 3 turned on causes the frictional force between the window glass near the fully closed position and the door to increase, the movement of the window glass to the closing side has a load. When the close switch 3 and the cancel switch 11 are turned on at the same time, the cancel signal is transferred to the control means 10 through the common signal line 12, and the determination in step 32 proceeds to step 38. In step 38, Immediately after the close switch 3 is turned on, the current cycle time of the pulse cycle timer 9a is not longer than the reference cycle time of the reference time storage means 8a and the process moves to step 39 to close the window glass for the motor 4. For a short time after the close switch 3 is turned on. Since the current cycle time of the loose cycle timer 9a is longer than the reference cycle time of the reference time storage means 8a, the process shifts to step 40. Since the cancel switch 11 is turned on in the determination in step 40, the process shifts to step 42. The current supply to the motor 4 is stopped, the window glass moves to the fully closed position, and then stops at the fully closed position.

[0029]

As described above, since the power window control device according to the present invention has the above-mentioned configuration, the position switch and the cancel switch are connected to the control means by a single signal line. Therefore, the number of poles of the connector can be reduced and the external shape of the connector does not become large as compared with the case where they are connected by different signal lines different from each other.
This has an excellent effect of being advantageous in terms of space in the mounting portion.

[Brief description of drawings]

FIG. 1 is a block diagram of a power window control device according to the present invention.

FIG. 2 is a flowchart illustrating an operation of the power window control device shown in FIG.

FIG. 3 is a flowchart illustrating an operation of the power window control device shown in FIG.

FIG. 4 is a block diagram of a conventional power window control device.

[Explanation of symbols]

 1 Power Window Control Device 2 Open Switch 3 Close Switch 4 Motor 4a Output Shaft 5 Driving Means 6 Rotation Detecting Means 7 Position Switch 8 Reference Value Memory 8a Reference Time Storage Means 9 Current Value Memory 9a Pulse Cycle Timer 10 Control Means 12 Single Signal line

Claims (1)

[Claims] 1. An open switch and a close switch which are turned on by an operation of an occupant, and an output shaft connected to the windshield and an electric current for opening the windshield or closing the windshield when the open switch or the close switch is turned on. Motor for moving the window glass within the stroke between the fully closed position and the fully open position via the output shaft, the drive means for connecting the power source to the motor, and the rotation of the output shaft of the motor. Rotation detecting means for detecting a number to generate a pulse signal, a position switch for detecting when the window glass reaches a predetermined position within the stroke of the window glass and switching the position switch, and an electrical switch for the position switch. Connected to
A reference value memory having a reference time storage means for setting a reference cycle time corresponding to the reference rotation speed of the motor, and a pulse cycle timer for detecting the rotation state of the motor based on the current cycle time of the pulse signal from the rotation detection means. A current value memory having, and when the close switch is turned on and the position cycle switch is not turned on, the current cycle time of the pulse cycle timer becomes longer than the reference cycle time of the reference time storage means. A control means for supplying an inverted current to open the window glass, and a cancel switch electrically connected to the control means so as not to supply an inverted current to the motor by an operation of an occupant. In the power window control device having the above, the position switch and the cancel switch are Power window control apparatus characterized by being connected to the control unit via the signal line.