JPH06217572A - Method for controlling motor of power window device - Google Patents

Abstract

PURPOSE:To provide a motor controlling method by which the reversing of a motor can be canceled without making the structure of a device complicated. CONSTITUTION:The control means 10 of a power window device 1 controls the setting of the reversing timing of a motor 4 by operating a close switch 2. The time setting means 7c of the means 10 sets second set time which cancels the reversing operation of the motor when the time from the previous turning on to the current turning on of the switch 2 is longer than first set time and third set time which cancels the reversing operation of the motor 4 in a period of time longer than the second set time when the time is shorter than the first set time.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a motor control method of a power window device for controlling the operation of a windshield by detecting the current position of the windshield of an automobile, the one shown in FIG. 7 is known. In FIG. 7, the motor 100 is connected to a window switch 111 via a controller 109 and a cancel switch 110. When the window switch 111 is turned on, the armature shaft 101 rotates, and the rotational power of the armature shaft 101 is changed. The motive power transmitted to 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.
7 is converted to the fully closed side / fully opened side movement. The armature shaft 101 is provided with a rotation detection mechanism 108, and the rotation speed of the armature shaft 101 is converted into a pulse signal by the rotation detection mechanism 108 and transferred to a controller 109 which is a control means.
Recognizes the current position data in the stroke from the fully closed position to the fully open position of the window glass 107 and the rotation speed of the armature shaft 101. Therefore, when the window glass 107 is prevented from moving before reaching the fully closed position, the controller 109 causes the rotation detection mechanism 10 to move.
Although the current position data of the windshield 107 from 8 does not reach the fully closed position, the rotation of the armature shaft 101 is stopped to recognize that something is pinched, and the current is supplied to the motor 100. Is once cut and then the current supplied to the motor 100 is reversed to move the window glass 107 to the fully open side by a predetermined amount. Further, when the friction between the window glass 107 and the glass run on which the window glass 107 is supported increases due to aged deterioration or the like, the moving speed of the window glass 107 becomes extremely slow, and thus the rotation speed of the armature shaft 101. When it becomes low to some extent, the controller 109 causes the rotation detection mechanism
Although the current position data of the windshield 107 from the above does not mean that the current position data has reached the fully closed position, the armature shaft 1
In order to recognize that the rotational speed of 01 has decreased, the supply of current to the motor 100 is cut off. At that time, since the recognition of the controller 109 is canceled by turning on the window switch 111 while turning on the cancel switch 110, the current is re-supplied to the motor 100 in a state where the control for reversing the motor 100 is interrupted. The glass 107 is moved to the fully closed position.

[0003]

In the above-described motor control method for the power window device, since the control for interrupting the reversal of the motor 100 is performed by turning on the cancel switch 110, the cancel operation is performed in addition to the window switch 111. It is necessary to provide the switch 110, and there is a problem that the entire device may become complicated due to the space for providing the cancel switch 110, the wiring of the wiring connected to the cancel switch 110, and the like. This problem is solved. That was a challenge.

[0004]

An object of the present invention is to provide a motor control method for a power window device, which can cancel the reverse rotation of the motor without complicating the structure of the device. There is.

[0005]

[Constitution of the invention]

[0006]

A motor control method for a power window device according to the present invention is an open switch / close switch which is turned on by an operation of an occupant, and an open switch / close switch which connects an output shaft to a window glass. By turning on, current in the forward and reverse directions is supplied, and the motor that moves the window glass within the stroke between the fully closed position and the fully open position via the output shaft,
Compared with the drive means that connects the power supply to the motor, the rotation detection means that detects the rotation speed of the output shaft of the motor and generates a pulse signal, and the elapsed time from when the close switch was last turned on to this time The first set time is set in advance and the second set time for canceling the reversing operation for the motor is set when the elapsed time is longer than the first set time and the elapsed time is set to be longer than the first set time. When the time is short, the time setting means for setting the third set time for canceling the reversing operation for the motor in a time longer than the second set time is provided, and in the vicinity of the fully closed position within the stroke of the window glass. Has a position reference value storage means for presetting a position reference value, and a reference time storage means for setting a pulse cycle time corresponding to the reference rotation speed of the motor. Has a reference value memory and a position counter for counting the current position data of the window glass with a pulse signal from the rotation detection means, 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. The control means is provided with a current value memory, and the control means compares the elapsed time from when the close switch is turned on this time with the second set time or the third set time set by the time setting means and also the pulse period timer. The current cycle time of the motor is compared with the reference time of the reference time storage means and the count number of the position counter is compared with the position reference value of the position reference value storage means to set the timing for reversing the supply current to the motor. When the second setting time is set by the setting means, the close switch is turned on. The current is supplied to the motor in a short time corresponding to the time, and when the third setting time is set by the time setting means, the current is supplied to the motor in a long time corresponding to the ON time of the close switch. Can be

[0007]

In the motor control method for the power window device according to the present invention, the timing for reversing the supply current to the motor is such that the elapsed time from the last time the close switch was turned on to the time it is turned on and the first set time. The second setting time or the third setting time, which is set based on the result of comparison with, is determined by the operation method of the close switch. Therefore, the control for canceling the reverse rotation of the motor can be performed without providing a cancel switch as in the conventional one.

[0008]

1 to 6 show an embodiment of a motor control method for a power window device according to the present invention.

A power window device 1 in which the motor control method of the power window device according to the present invention is used is shown in FIG.
As is clear from Fig. 7, the output shaft 4a is connected to the open switch 2 / close switch 3 and the window glass (see Fig. 7) which are mainly turned on by the operation of the occupant, and the open switch 2 / close switch 3 is turned on in the forward direction. A motor 4 which is supplied with a current in the opposite direction and moves the window glass within a stroke between the fully closed position and the fully open position via the output shaft 4a, drive means 5 for connecting a power source to the motor 4, and output of the motor 4. The motor 4 has a rotation detecting means 6 for detecting the number of rotations of the shaft 4a and generating a pulse signal, a position reference value storing means 7a for presetting a position reference value in the vicinity of the fully closed position within the stroke of the window glass, and the motor 4 Of the first set time T1, the second set time T2 and the third set time. The reference value memory 7 having a time setting means 7c for presetting the time T3 and a position counter 8a for counting the current position data of the window glass by the number of pulse signals from the rotation detecting means 6 and the pulse signal from the rotation detecting means 6 are provided. The control means 10 is provided with a current value memory 8 having a pulse cycle timer 8b for detecting the rotation state of the motor according to the cycle.

Open switch 2 and close switch 3
Is connected to the control means 10 via the input interface a, and includes an open switch 2 and a close switch 3.
Is turned on to the control means 10.

As is apparent from FIGS. 2 and 3, the motor 4 has one of the armature shafts 4c rotatably accommodated in the motor case 4b, which projects toward the gear case 4d. The gear case 4d of the armature shaft 4c. A worm 4e is formed on the projecting portion to. The armature shaft 4c is provided in an armature (not shown) in the motor case 4b, and the armature is supplied with a current from the driving means 5 to rotate in the forward and reverse directions.

A worm wheel 4f meshes with the worm 4e in the gear case 4d. The worm wheel 4f is rotatably supported by an output shaft support portion 4d1 having a center hole 4f1 formed in a substantially annular shape in the center of the gear case 4d, and a damper mount formed on the upper surface of the worm wheel 4f. Hole 4f2
A shock absorbing damper 4h is non-rotatably fitted therein. The damper hub 4h1 provided at the center of the damper 4h has an oval-shaped hole 4h2 formed concentrically with the worm wheel 4f. The oval hole 4h2 is non-rotatably attached to the output shaft 4a.

A magnetic plate 4j is arranged above the worm wheel 4f. This magnetic plate 4j
Is a disk shape having an outer diameter slightly smaller than the outer diameter of the worm wheel 4f, and an S pole magnetized portion 4j2 and an S pole magnetized portion 4j2 in which an S pole is magnetized on the outer circumference of a base 4j1 provided at the center. Six pairs of magnetized portions 4j2 and N-pole magnetized portions 4j3, which are magnetized N poles that are opposite magnetic poles, are alternately arranged on the circumference. An oval hole 4j4 is also formed in the center of the base 4j1 similarly to the damper 4h, and this oval hole 4j4 is also attached to the output shaft 4a so as not to rotate. The single S-pole magnetized portion 4j2 and the single N-pole magnetized portion 4j3 are in the same angular range on the circumference of the magnetic plate 4j.

On the other hand, an output shaft 4a is rotatably inserted through an output shaft support portion 4d1 provided on the gear case 4d, and one side of the output shaft 4a is connected to a glass elevating means (not shown) outside the gear case 4d. Is being done,
The other side projects into the gear case 4d. Output shaft 4a
In the protruding portion of the gear case 4d into the gear case 4d, there is provided a damper engaging oval shaft portion 4a1 having an outer shape to be inserted into an oval hole 4h2 formed in the damper hub 4h1 of the damper 4h. At the same time, the magnetic plate 4j is provided above the oval-shaped shaft portion 4a1 for locking the damper.
An oval shaft portion 4a2 for locking a magnetic plate, which has an outer shape to be inserted into an oval hole 4j4 formed in the base 4j1, is provided, and the oval shaft portion 4a2 for locking the magnetic plate is provided. A pin mounting groove 4a3 is provided on the upper side of. The output shaft 4a has an oval-shaped shaft portion 4a1 for locking the damper on the inner peripheral side of the worm wheel 4f.
Is inserted into the oval hole 4h2 of the damper 4h, the oval shaft portion 4a2 for locking the magnetic plate is inserted into the oval hole 4j4 of the magnetic plate 4j on the upper side of the worm wheel 4f, and the pin is attached on the upper side of the magnetic plate 4j. A see-through (C) -shaped pin 4k for retaining is fitted in the groove 4a3, and thus is integrally locked to the damper 4h and the magnetic plate 4j.

On the other hand, Hall elements 11 are arranged at three locations on the magnetic plate 4j. As is apparent from FIG. 3, the hall element 11 has a ring shape and is fixed to the lower side of the circuit board 13 in a state of being wrapped in a sliding contact member 12 formed of Teflon resin, and is connected to the outside. Line 11
a, 11b, and 11c are electrically connected to one end side of the leaf spring-like connecting members 14, 15, and 16 on the upper side of the circuit board 13. The hall element 11 is housed in the gear case 4d,
It is covered by the gear case cover 17. The other ends of the leaf spring-like connecting members 14, 15 and 16 are fixed to the grommet 18 and connected to external wirings 19, 20 and 21, respectively. The external wirings 19, 20 and 21 are connected to the control means 10 shown in FIG. 1, respectively. The leaf spring-shaped connecting members 14, 15 and 16 have some elasticity toward the magnetic plate 4j side, which is a direction orthogonal to the longitudinal direction, and the side opposite to the magnetic plate 4j, and thus the sliding contact member. 12
With the magnetic plate 4j in contact with the Hall element 11
In the magnetic field of the magnetic plate 4j are urged toward the side closer to the S pole magnetized portions 4j2 and N pole magnetized portions 4j3. Since the sliding contact member 12 contacts the magnetic plate 4j, the Hall element 1
1 does not directly contact the magnetic plate 4j.

The Hall element 11 is the S of the magnetic plate 4j.
The Hall voltage is induced by the rotating magnetic field generated when the magnetic plate 4j rotates because it is biased to the side closer to the pole magnetized portion 4j2 and the N pole magnetized portion 4j3. The Hall voltage is at a low level every time the pair of S-pole magnetized portions 4j2 and N-pole magnetized portions 4j3 pass by the rotation of the magnetic plate 4j,
Repeat high level. The Hall element 11 and the magnetic plate 4j form the rotation detecting means 6, and the rotation speed of the magnetic plate 4j is controlled by the number of pulse signals from the external wirings 19, 20, 21 via the interface circuit a.
By transferring to 0, the control unit 10 is made to recognize the current position of the windshield and the rotation state of the motor 4.

The driving means 5 is a power source connection switching means such as a relay and is connected to the control means 10 via the output interface circuit b, and a signal from the output stage of the control means 10 drives the motor 4 in the forward direction. Or supply current in the opposite direction.

The control means 10 incorporates a microcomputer having a reference value memory 7 and a current value memory 8 therein. The reference value memory 7 is a read-only memory (R
The position reference value storage means 7a provided in the reference value memory 7 is located near the fully closed position in the storage area corresponding to the stroke between the fully closed position and the fully open position of the window glass. The position reference value is preset.
Here, the vicinity of the fully closed position corresponds to a position having a dimension smaller than the clearance dimension when a finger or the like is caught while the window glass is moving toward the fully closed position. The position reference value storage means 7a is compared with the current position data from the position counter 8a described later. Here, the vicinity of the fully closed position corresponds to a position having a dimension smaller than a clearance dimension when a finger or the like is caught when the window glass is moving toward the fully closed position. Further, the reference value memory 7 is provided with a reference time storage means 7b, and the reference time storage means 7b presets the cycle time of the pulse generated when the motor 4 rotates in a steady state, The set pulse cycle reference time is compared with the current cycle time from the pulse cycle timer 8b described later. The reference value memory 7 is also provided with a time setting means 7c, and the time setting means 7c has the first set time T1 and the second set time.
The set time T2 and the third set time T3 are set in advance.
The first set time T1 is compared with the elapsed time from when the close switch 3 was last turned on to this time,
The second set time T2 is set as a mask time when the elapsed time from when the close switch 3 was turned on last time to when it is turned on this time is longer than the first set time T1,
The third set time T3 is set as a mask time when the elapsed time from when the close switch 3 was turned on last time to when it is turned on this time is shorter than the first set time T1.
The third set time T3 has a value larger than the second set time T2. While the first set time T1 and the second set time T2 are set, the reversing operation for the motor 4 is canceled corresponding to each mask time.

The current value memory 8 is a write / read memory (RAM) at any time, and the position counter 8a provided in the current value memory 8 stores the pulse signal from the rotation detecting means 6 in the RAM area at any time. The current position data of the windshield is obtained by the current position data stored in the position counter 8a, and the current position data stored in the position counter 8a is compared with the position reference value of the position reference value storage means 7a. Determine whether or not.

Further, the current value memory 8 is provided with a pulse cycle timer 8b, and this pulse cycle timer 8b stores the current cycle time of the pulse signal from the rotation detecting means 6 as needed, and the pulse cycle timer 8b. The present cycle time stored by is compared with the pulse cycle reference time of the reference time storage means 7b to determine whether the motor 4 is overloaded. The current value memory 8 is also provided with a position buffer 8c.
c has a function of temporarily storing the number of pulse signals from the rotation detecting means 6.

When the open switch 2 is on, the control means 10 compares the current cycle time of the pulse cycle timer 8b with the pulse cycle reference time of the reference time storage means 7b to compare the current cycle time of the pulse cycle timer 8b. Is shorter than the pulse cycle reference time of the reference time storage means 7b, a current on the window opening side is supplied to the motor 4 via the driving means 5, and the current cycle time of the pulse cycle timer 8b is stored as the reference time. When it becomes longer than the reference time of the means 7b, the current supply to the motor 4 is stopped. In addition, the control means 10 controls the second time when the time setting means 7c sets the elapsed time after the close switch 3 is turned on this time.
While comparing with the set time T2 or the third set time T3, the current cycle time of the pulse cycle timer 8b is compared with the pulse cycle reference time of the reference time storage means 7b, and the count number of the position counter 8a is compared with the position reference value storage means 7a. The timing for reversing the current supplied to the motor 4 is set by comparing with the position reference value of.

In the power window device 1 having such a structure, when the window glass is in the fully closed position,
When the open switch 2 is turned on, FIGS.
The program shown in is started. In this program, steps 70 to 87 are a main routine, and steps 60 to 64 are an interrupt routine executed prior to the main routine when the pulse signal generated by the rotation of the motor is taken in.

When the open switch 2 is turned on, the main routine is executed, the switch signal is reset in step 70, the switch signal is fetched in step 71, and the value of the position buffer 8c is stored in the position counter 8a in step 72. Whether the close switch 3 in 73 is ON or not, YES in step 74 is whether the open switch 2 is ON, or the current cycle time of the pulse cycle timer 8b in step 75 is the reference time of the reference time storage means 7b. Since it is no longer than that, in step 76, the current on the window opening side is supplied to the motor 4 via the drive means 5.

The armature shaft 4c rotates in the reverse direction by supplying a current to the motor 4 on the side of the opening of the window, so that the worm wheel 4f meshing with the armature shaft 4c starts the reverse rotation. Worm wheel 4
When f rotates in the reverse direction, the damper 4h also rotates in the reverse direction integrally with the worm wheel 4f. Therefore, the rotational power of the worm wheel 4f is transmitted to the output shaft 4a via the damper 4h, and the output shaft 4a rotates in the reverse direction. . When the output shaft 4a rotates in the reverse direction, the gear case 4d is attached to the output shaft 4a.
The window glass connected on the outer side of is moved toward the open side.

At the same time that the output shaft 4a starts to rotate in the reverse direction, the magnetic plate 4j also starts to rotate integrally with the output shaft 4a, so that a rotating magnetic field is generated, and the rotating magnetic field causes the Hall elements 11, 11, 11 to move to the Hall element. The voltage is induced to start the transfer to the control means 10. When the interrupt routine is executed by transferring the pulse signal from the rotation detecting means 6, it is determined whether or not the close switch 3 in step 60 is on, and whether or not the open switch 2 in step 61 is on. Therefore, in step 62, the position buffer 8c is incremented, and in step 63, the elapsed time from the occurrence of the previous interrupt is stored in the pulse cycle timer 8b, and then the main routine is executed. At step 72, the switch signal is fetched, at step 72 the position counter is stored, at step 73 is no, at step 74 is yes, and the routine proceeds to step 75, where the current cycle time of the pulse cycle timer 8b is the reference time storage means 7b.
Is longer than the reference time. If the motor 4 is not overloaded, the routine proceeds to step 76, where the window open side current is continuously supplied to the motor 4, and the routine returns to step 71. At this time, if the motor 4 is overloaded and the current cycle time of the pulse cycle timer 8b becomes longer than the reference time of the reference time storage means 7b, the answer is YES in step 74 and YES in step 75. The current supply to the motor 4 is stopped to stop the windshield in an emergency.

When the open switch 2 is turned off while the window glass is moving toward the fully open position, the switch signal is taken in at step 71, the position is stored in the position counter at step 72, the step 73 is NO, and the step 74 is NO. No, so step 7
At 8, the current supply to the motor 4 is stopped, and the window glass stops at the position where the open switch 2 is turned off.
In this state, when the open switch 2 is turned on, the current on the window opening side is supplied again to the motor 4, so that the window glass is moved toward the fully open position.

When the open switch 2 is turned off when the window glass reaches the fully open position, step 71
At step 72, the switch signal is taken in, at step 72 the position counter is stored, at step 73 is no, and at step 74 is no. Therefore, the current supply to the motor 4 is stopped at step 78 and the windshield is stopped at the fully open position.

When the close switch 3 is turned on while the windshield is in the fully open position, a current on the windward side is supplied to the motor 4 via the driving means 5 to move the windshield toward the fully closed position. Simultaneously with the start, the pulse signal from the rotation detection means 6 is transferred to the control means 10. The interrupt routine is executed by transferring the pulse signal, and it is determined whether or not the close switch 3 is turned on in step 60, the position buffer 8c is decremented in step 64, and the progress from the time of the previous interrupt occurrence in step 63. Time the pulse cycle timer 8
After storing in b, the main routine is executed, resetting is performed in step 70, a switch signal is taken in in step 71, the value of the position buffer 8c is stored in the position counter 8a in step 72, and the close switch in step 73 is executed. Since it is YES whether or not it is ON, the close switch 3 in step 79
It is determined whether or not the elapsed time from when the switch was turned on last time to when it was turned on this time has reached the first set time T1 set by the time setting means 7c. here,
By comparing the time from the last time the close switch 3 was turned on to the time it is turned on this time with the first set time T1, whether the close switch 3 is repeatedly turned on at a long cycle without pinching or the like, or It is determined whether or not the close switch 3 is repeatedly turned on in a short cycle by noticing an emergency such as trapping, and when the close switch 3 is repeatedly turned on in a long cycle, in step 80, the detection mask time is set to the first value. 2 When the set time T2 is set and the close switch 3 is repeatedly turned on in a short cycle, step 8
In 1, the third set time T3 is set as the detection mask time.

Since the second set time T2 is set when the close switch 3 is repeatedly turned on at a long cycle, the time elapsed since the close switch 3 was turned on this time in step 82 is the second set time T2. The determination as to whether or not it is longer than is switched from No to Yes in a short time. Then, since the time of NO in step 82 is shortened, the current on the window closing side is supplied to the motor 4 in a short time through the driving means 5 in step 83, so that the window glass is gradually moved to the fully closed position with a small movement amount. , And returns to step 71.

Since the third set time T3 is set when the close switch 3 is repeatedly turned on in a short cycle, the time elapsed since the close switch 3 was turned on this time in step 82 is the third set time T3. From No to Yes by determining whether it is longer than the second set time T2
The switching time is longer than when. And step 8
In No. 2, the time that is No becomes longer, so Step 8
In 3, the current on the window closing side is supplied to the motor 4 for a long time via the drive means 5, so that the window glass moves toward the fully closed position with a large movement amount and returns to step 71.

The answer in step 82 is YES, and in step 84 whether or not the cycle of the pulse cycle timer 8b is longer than the reference time is NO, and the motor 4 is not loaded and is rotating at a normal rotation speed. Is recognized,
Since the answer in step 82 is YES and the answer in step 84 is NO, the current on the window closing side is continuously supplied to the motor 4 via the driving means 5 in step 83, and the process returns to step 71.

When the movement of the window glass is restricted by an external force at a position away from the fully closed position while the window glass is moving toward the fully closed position, the current cycle time of the pulse cycle timer 8b becomes the reference time. In order to recognize that there is an overload because it becomes longer than the reference time of the storage means 7b,
The answer in step 84 is YES, and in step 85 it is NO whether or not the current position of the position counter 8a is smaller than the position reference value of the position reference value storage means 7a, and the windshield has reached the fully closed position. However, since it is recognized that the rotation speed has decreased, the current supplied to the motor 4 via the drive means 5 is reversed in step 86 to reverse the current on the window opening side opposite to the switch operation. Is supplied, and the process returns to step 71. The motor 4 reversely moves the window glass to the fully open side by the current supply on the window open side, and then stops at the same time when the operation of the close switch 3 is stopped. When the second set time T2 is set, the entrapment is not detected at the time corresponding to the second set time T2, and the electric current is supplied to the motor 4 based on the on time of the close switch 3 to set the third set time T2.
3 is set, the entrapment is not detected at the time corresponding to the third set time T3, and the close switch 3
The electric current is supplied to the motor 4 based on the ON time of. As a result, the timing of reversing the current supplied to the motor 4 changes depending on the ON time of the close switch 3.

When the external force is removed and the close switch 3 is turned on to bring the window glass to the fully closed position, the answer in step 85 is YES, and the current supply to the motor 4 is stopped in step 87. The glass stops in the fully closed position.

[0034]

As described above, since the motor control method for the power window device according to the present invention has the above-described configuration, the timing at which the current supplied to the motor is reversed is the last time the close switch is operated. Since the second set time or the third set time set based on the comparison result between the first set time and the elapsed time from the time when the switch is turned on this time is determined by the operation method of the close switch, Since the control for canceling the reversal of the motor can be performed without providing a cancel switch unlike the conventional one, there is an excellent effect that it is not necessary to complicate the structure of the device.

[Brief description of drawings]

FIG. 1 is a block diagram of a power window device using an embodiment of a motor control method for a power window device according to the present invention.

FIG. 2 is an external configuration diagram of each component of the motor in the power window device shown in FIG.

FIG. 3 is a vertical cross-sectional side view around a rotation detecting unit in the motor shown in FIG.

FIG. 4 is a flowchart illustrating the operation of the motor control method for the power window device according to the present invention.

FIG. 5 is a flowchart illustrating the operation of a motor control method for a power window device according to the present invention.

FIG. 6 is a flowchart illustrating the operation of a motor control method for a power window device according to the present invention.

FIG. 7 is a block diagram of a power window device using a conventional motor control method for the power window device.

[Explanation of symbols]

 1 Power window device 2 Open switch 3 Close switch 4 Motor 4a Output shaft 5 Driving means 6 Rotation detecting means 7 Reference value memory 7a Position reference value storage means 7b Reference time storage means 7c Time setting means 8 Current value memory 8a Position counter 8b Pulse Periodic timer 10 Control means

Claims (1)

[Claims] 1. An output shaft connected to an open switch / close switch which is turned on by an operation of an occupant, and an output shaft connected to a window glass, and a forward / backward current is supplied by turning on the open switch / close switch. A motor that moves the window glass within a stroke between the fully closed position and the fully open position via a drive unit, a drive unit that connects a power source to the motor, and a pulse signal is generated by detecting the rotation speed of the output shaft of the motor. And a first set time that is compared with an elapsed time from when the close switch is turned on last time to when the close switch is turned on this time, and the elapsed time is longer than the first set time. Sometimes the second set time for canceling the reversing operation for the motor is set and the elapsed time is set to the first
Third, when the time is shorter than the set time, the reversal operation for the motor is canceled in a time longer than the second set time.
It has a time setting means for setting a set time, has a position reference value storage means for setting a position reference value in the vicinity of the fully closed position within the stroke of the window glass, and corresponds to the reference rotation speed of the motor. A reference value memory having a reference time storage means in which the pulse cycle time is set, and a position counter for counting the current position data of the window glass with the pulse signal from the rotation detecting means, and the current pulse signal from the rotation detecting means. The control means is provided with a current value memory having a pulse cycle timer for detecting the rotation state of the motor according to the cycle time, and the control means sets the elapsed time after the close switch is turned on this time by the time setting means. 2 Set time or 3rd set time By comparing the in-cycle time with the reference time of the reference time storage means and comparing the count number of the position counter with the position reference value of the position reference value storage means, the timing for reversing the supply current to the motor is set to set the time. When the second set time is set by the means, the current is supplied to the motor in a short time corresponding to the on time of the close switch, and when the third set time is set by the time setting means, the close switch is turned on. Then, the motor control method for the power window device is characterized in that the current is supplied to the motor for a long time.