JP2003054376A - Wiper controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wipe controller capable of moving two overlapping wiper blades without collision. SOLUTION: When angular speed of the first wiper blade 10 exceeds a predetermined value while the first wiper blade 10 is within an overlapping wiping region when the first and second wiper blades 10, 16 are wiping, a second wiper motor 13 is normally rotated if the second wiper blade 16 reaches a position at a higher level than a second lower reversing position and the second wiper motor 13 is reversely rotated if the second wiper blade 16 reaches a second upper reversing position. This wiper controller 1 has a controller 6 for controlling the second wiper blade 16 to reciprocatingly wipe on unwiped parts between a third lower reversing position and the second upper reversing position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper control device for controlling a wiper for wiping a windshield glass of an automobile.

[0002]

2. Description of the Related Art As a wiper control device of this type, there is one in which two wiper blades are overlapped to wipe a wiping surface.

[0003]

However, in the above-mentioned wiper control device, when one wiper blade stops within the range where the two wiper blades overlap, the other wiper blade causes the other wiper blade to stop. There was a problem of colliding with.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a wiper control device which can move two overlapping wiper blades so as not to collide with each other.

[0005]

[Constitution of the invention]

[0006]

In the wiper control apparatus according to the first aspect of the present invention, the first wiper motor and the first wiper motor are rotated forward and the first wiper link is passed through the first wiper link. A first wiper having a first wiper blade that reciprocates and wipes on a first wiping surface between an upper reversal position and a first lower reversal position, a second wiper motor, and this second wiper motor. Is reversely rotated to overlap a part of the wiping surface of the first wiper blade via the second wiper link, and the second upper position and the second lower position which are higher than the first lower inverting position. A second wiper having a second wiper blade that reciprocally wipes on a second wiping surface between the first and second wiper motors, and the first and second wiper motors. A coil that supplies current to the wiper motor A wiper control device comprising a controller and a wiper switch electrically connected to the controller, wherein the controller has angular velocity detecting means for detecting an angular velocity of the first wiper blade, and the first and second wiper If the angular velocity exceeds a predetermined value when the first wiper blade is in the overlap wiping area of the first wiper blade and the second wiper blade during the wiping operation of the second wiper blade, The wiper blade is positioned higher than the second lower reversal position, and the predetermined third
When the second wiper blade reaches the second upper reversal position, the second wiper motor is rotated in the reverse direction when the lower wiper motor is reached, and the second wiper blade is rotated in the reverse direction when the second wiper blade is reached. It is characterized in that it is configured to perform reciprocating wiping on the wiping surface between the third lower reversal position and the second upper reversal position.

In the wiper control device according to the second aspect of the present invention, the controller has an angular velocity detecting means for detecting the angular velocity of the first wiper blade, and the first wiper blade includes the first wiper blade and the second wiper blade. When the angular velocity exceeds a predetermined value when the wiper blade is in the overlap wiping area where the second wiper blade overlaps with the second wiper blade, the second wiper blade is positioned higher than the second lower reversal position. When the second wiper blade reaches the second upper inversion position, the second wiper motor is normally rotated when the third lower inversion position is reached, and the second wiper motor is reversely rotated when the second wiper blade reaches the second upper inversion position. The wiper blade is controlled to wipe on the wiping surface between the third lower reversal position and the second upper reversal position.

[0008]

In the wiper control device according to the present invention, the controller is configured such that the first wiper blade operates the first wiper blade and the second wiper blade during the wiping operation of the first and second wiper blades. When the angular velocity exceeds a predetermined value while in the overlap wiping area, the second wiper blade moves to a predetermined third lower reversal position which is higher than the second lower reversal position. When the second wiper blade reaches the second upper reversal position, the second wiper motor is rotated forward when the second wiper motor reaches the second upper reverse position.
The reverse rotation of the wiper motor is performed to control the second wiper blade to reciprocally wipe on the wiping surface between the third lower reversal position and the second upper reversal position. Therefore, the first and second
The wiper blade does not collide.

[0009]

DETAILED DESCRIPTION OF THE INVENTION

[0010]

1 to 10 show one embodiment of a wiper control device according to the present invention. The illustrated wiper control device mainly includes a wiper switch 2, a first wiper 3, a second wiper 4, a washer motor 5, and a controller 6.

The first wiper 3 includes a first wiper motor 7, a first link 8, a first wiper arm 9, a first wiper blade 10, a first position detection switch 11 and a first wiper blade 10.
Position counters 12 are provided respectively.
The first wiper 3 is a first wiping surface 9 arranged on the passenger side.
Used to wipe 1. The second wiper 4 has a second wiper motor 13, a second link 14, a second wiper arm 15, which are arranged in a pair with the first wiper 3.
Second wiper blade 16, second position detection switch 1
7 and a second position counter 18 are provided respectively. The second wiper 4 is used to wipe the second wiping surface 92 arranged on the driver seat side.

The controller 6 includes a power supply circuit 61, a reset circuit 62, a relay drive circuit 63, and a first input circuit 6
4, second input circuit 65, third input circuit 66, fourth input circuit 67, fifth input circuit 68, high / low switching command output stage (H / L switching output command) 69, first motor drive Circuit (motor drive circuit) 70, first high / low switching relay (H / L switching) 71, sixth input circuit 72, seventh input circuit 73, second motor drive circuit (motor drive circuit)
74, second high / low switching relay (H / L switching) 75,
An eighth input circuit 76, a ninth input circuit 77, and a central processing circuit ECU are provided. In the central processing circuit ECU,
A first forward / reverse switching stage 78, a first PWM output stage 79, a first
Motor position counter 80, second forward / reverse switching stage 81, second PWM output stage 82, second motor position counter 8
3, a motor speed detection stage 84, and an arithmetic processing unit 85 are incorporated.

The wiper switch 2 includes a stop switch (O
FF), intermittent switch (INT), low speed switch (L
O), high speed switch (HIGH), washing switch (WA
SH) respectively. Wiper switch 2
When the intermittent switch is turned on, the first input circuit 64
The central processing circuit ECU is set to the intermittent mode through. When the low speed switch is turned on, the wiper switch 2 puts the central processing circuit ECU into the low speed mode through the second input circuit 65. When the high-speed switch is turned on, the wiper switch 2 passes through the third input circuit 66 and the central processing circuit ECU.
To fast mode. When the cleaning switch is turned on, the wiper switch 2 puts the central processing circuit ECU in the cleaning mode through the fourth input circuit 67.

In the first wiper motor 7, the first brush terminal 7a is electrically connected to the first motor drive circuit 70, and the second and third brush terminals 7b and 7c are electrically connected to the first high / low switching relay 71, respectively. It is connected. Then, the armature shaft 7d is connected to the first pivot shaft 8 via the first link 8.
The first wiper blade 10 is connected to the first pivot shaft 8a via the first wiper arm 9. In the first wiper motor 7, when the second brush terminal 7b is set to the low level by the first high / low switching relay 71, the armature shaft 7d rotates forward at a low speed. Then, by the first link 8, the first wiper blade 1
0 is wiped back and forth between the first lower reversal position A1 and the first upper reversal position B1 on the passenger side of the wiping surface 90 shown in FIG. 2 at a low speed. The first wiper motor 7 causes the first wiper blade 10 to reciprocally be wiped at high speed when the third brush terminal 7c is set to the low level by the first high / low switching relay 71.

The first position detection switch 11 includes a movable contact 11a connected to the armature shaft 8a of the first wiper motor 7, a grounded fixed contact 11b, and a power supply fixed contact 11c connected to a power supply. With and. The movable contact 11a is connected to the ground side fixed contact 11b when the first wiper blade 7 reaches the first lower reversal position A1 by the first wiper motor 7, and the first position detection switch 11 outputs the position detection signal. And on the contrary, the first
When the wiper blade 10 is in the middle of wiping and is not at the first lower reversal position A1, it is connected to the power source side fixed contact 11c and does not generate a position detection signal.

The first position counter 12 comprises a sensor magnet 12a fixed to the armature shaft 8a of the first wiper motor 7 and a Hall IC 12b arranged on the outer periphery of the sensor magnet 12a in a non-contact manner with the sensor magnet 12a. . First position counter 12
When the armature shaft 8a rotates, the Hall IC 12b generates a pulse-shaped rotation signal, and supplies the rotation signal to the first motor position counter 80 through the seventh input circuit 73.

The first motor position counter 80 counts the rotation signal given from the first position counter 12 to detect the current position of the first wiper blade 10. The count value generated by the first position counter 12 is selected as a predetermined value from the first lower reversal position A1 to the first upper reversal position B1 of the first wiper blade 10. Then, as shown in FIGS. 2 and 3, a portion where the first wiper blade 10 and the second wiper blade 16 overlap each other is defined as an overlap wiping area Z. When the first wiper blade 10 reaches the first lower reverse position A1, the count value is reset because the position detection signal is given from the first position detection switch 11.

In the second wiper motor 13, the first brush terminal 13a is connected to the second motor drive circuit 74, and the second and third brush drive motors 74 are connected to each other.
The brush terminals 13b and 13c are electrically connected to the second high / low switching relay 75, respectively. The armature shaft 13d is connected to the second pivot shaft 14a through the second link 14, and the second pivot shaft 14a
The second wiper blade 16 is connected to the second wiper blade 16 via the second wiper arm 15. Second wiper motor 13
When the second brush terminal 13b is set to the low level by the second high / low switching relay 75, the armature shaft 1
3d rotates forward at low speed. Then, the second link 14 causes the second wiper blade 16 to move the second wiper blade 16 to the second lower inverting position A2 and the second upper inverting position B2 on the driver seat side of the wiping surface 90.
Swipe back and forth between and at low speed. Second wiper motor 1
When the third brush terminal 13c is set to the low level by the second high / low switching relay 75, the second wiper blade 16 wipes the second wiper blade 16 back and forth at high speed.

The second position detection switch 17 includes a movable contact 17a connected to the armature shaft 13a of the second wiper motor 13, a grounded fixed contact 17b, and a grounded fixed contact 17b.
It has a power supply side fixed contact 17c connected to a power supply. The movable contact 17a is connected to the ground side fixed contact 17b when the second wiper blade 15 reaches the second lower reversal position A2 by the second wiper motor 13, and the second position detection switch 17 outputs the position detection signal. On the contrary, when the second wiper blade 15 is in the middle of wiping and is not in the second lower reversal position A2, the power supply side fixed contact 17 is generated.
It is connected to c and does not generate a position detection signal.

The second position counter 18 comprises a sensor magnet 18a fixed to the armature shaft 13a of the second wiper motor 13 and a Hall IC 18b arranged on the outer periphery of the sensor magnet 18a in a non-contact manner with the sensor magnet 18a. . The second position counter 18 causes the armature shaft 8a to rotate,
The Hall IC 18b generates a pulse-shaped rotation signal and supplies the rotation signal to the second motor position counter 83 through the ninth input circuit 77.

The second motor position counter 83 counts the rotation signal given from the second position counter 18 to detect the current position of the second wiper blade 16. The count value generated by the second position counter 18 is selected as a predetermined value from the second lower reversal position A2 to the second upper reversal position B2 of the second wiper blade 16. Then, as shown in FIGS. 2 and 3, a portion where the first wiper blade 10 and the second wiper blade 16 overlap each other is defined as an overlap wiping area Z. When the second wiper blade 16 reaches the second lower reverse position A2, the position detection signal is given from the second position detection switch 17, so that the count value is reset.

The first and second motor drive circuits 70 and 74 have first and second forward / reverse switching relays for switching the current supply direction to the first and second wiper motors 7 and 13, respectively. . The first and second motor drive circuits 70, 7
Reference numeral 4 denotes a first and a second P built in the central processing circuit CPU.
It is driven by PWM control by the WM output stages 79 and 82. Normally, the positive sides of the first and second forward / reverse switching relays are turned on, but when a snowdrift is detected, the reverse sides are also turned on.

The controller 6 determines that there is a snow accumulation in the overlap wiping area Z where the second wiper blades 10 and 16 overlap while the first and second wiper blades 10 and 16 are in the wiping operation. When the first,
Both the second wiper blades 10 and 16 are operated in the forward and reverse directions. The controller 6 stops the first wiper blade 10 when the second wiper blade 16 stops during the wiping operation of the first and second wiper blades 10 and 16. When the first wiper blade 10 stops outside the overlap wiping area Z where the second wiper blade 16 overlaps during the wiping operation of the first and second wiper blades 10 and 16, The wiping operation of the second wiper blade 16 is continued. When the first wiper blade 10 stops outside the overlap wiping area Z where the second wiper blade 16 overlaps during the wiping operation of the first and second wiper blades 10 and 16, The wiping operation of the second wiper blade 16 is continued, and the wiper switch 2 is re-operated to restart the wiping operation of the second wiper blade 16 after the first wiper blade 10 is outside the overlap wiping area Z. Take control.

In the controller 6, the angular velocity of the first wiper blade 10 is detected by the angular velocity detecting means 84, and during the wiping operation of the first and second wiper blades 10 and 16, the first wiper blade 10 moves to the first When the angular velocity exceeds a predetermined value when the wiper blade 10 and the second wiper blade 16 are in the overlap wiping area Z, the second wiper blade 16 moves from the second lower reversal position A2. When a predetermined third lower reversal position (not shown), which is a high position, is reached, the second wiper motor 13 is rotated forward, and the second wiper blade 16 is moved to the second upper reversal position B2. The second wiper motor 16 is rotated in the reverse direction to reach the third wiper blade 16
The reciprocating wiping is performed on the wiping surface between the lower reversal position and the second upper reversal position B2.

In the controller 6, when the angular velocity of the first wiper blade 10 is within the overlap wiping area Z and the angular velocity exceeds a predetermined value, the second wiper blade 16 moves the second lower reversing position. When the second wiper motor 13 is rotated forward when the predetermined third lower reversal position, which is a position higher than A2, is reached, and the second wiper blade 16 reaches the second upper reversal position B2. Then, the second wiper motor 13 is rotated in the reverse direction so that the second wiper blade 16 is wiped on the wiping surface between the third lower reversal position and the second upper reversal position B2.

The wiper control device 1 as described above is controlled by the flow charts shown in FIGS. In the flowchart, the first wiper 3
Those belonging to the second wiper 4 are referred to as As, and those belonging to the second wiper 4 are referred to as Dr. Step 100 shown in FIG. 4 is an initial setting. In step 101, the state of the input signal is detected. In step 101, which mode the wiper switch 2 is in, the states of the first and second wiper motors 7 and 13, the first and second position detection switches 11,
The state of 17 and the state of the intermittent volume 2a provided in the wiper switch 2 are respectively detected, and the process proceeds to step 102. In step 102, a lock detection program, which will be described later, is executed. Then, the process proceeds to step 103, and similarly, it is determined whether or not there is a snow accumulation, which will be described later. When it is detected that there is a snowdrift, the routine proceeds to step 107, where the snowdrift control is executed, and then proceeds to step 110. When it is not detected that there is a snowdrift, the routine proceeds to step 104 to determine whether an error has occurred. To be determined. What is an error?
The first wiper blade 10 overlaps the wipe area Z
It means the state when locked outside. When it is detected that this error has occurred, the routine proceeds to step 108, where the control of the operation limit of the second wiper motor 13 is executed, and the routine proceeds to step 110, and when it is not detected that an error has occurred, step 105 Move to. In step 105, it is determined whether or not the wiper switch 2 has been input. If it is determined that the wiper switch 2 has not been input, step 10
9, the control of stop or stop request is executed, the process proceeds to step 110, and when it is determined that the wiper switch 2 is input, the process proceeds to step 106 to perform each control such as the low speed mode and the high speed mode. Is executed and step 11
Move to 0. In step 110, mutual monitoring control is executed, and the process proceeds to step 111. What is mutual monitoring?
The current positions of the first and second wiper blades 10 and 16 are detected by the first and second motor position counters 80 and 83 to adjust the speeds of the first and second wiper blades 10 and 16. means. In step 111, lock processing is executed and the process proceeds to step 112. The lock processing is to detect the states of the first and second lock counters incorporated in the program. In step 112, the PWM control signal with the selected duty ratio is output, and the process returns to step 101. When the edge of the rotation signal generated by the first position counter 12 is detected as the first wiper motor 7 starts rotating, the interrupt processing is performed by the first position counter in step 121 as shown in FIG. The count value of 12 is updated, the counter value of the wiping area of the first wiper blade 10 given by the first motor position counter 80 is updated, and the position of the first wiper blade 10 is detected. Then, the first motor lock timer incorporated in the program is updated, the presence or absence of a snowdrift is detected, and the routine returns. In addition, the second wiper motor 13
When the edge of the rotation signal generated by the second position counter 18 is detected by starting the rotation of FIG.
As shown in, the count value of the second position counter 18 is updated in step 120, and the counter value of the wiping area of the second wiper blade 16 given by the second motor position counter 83 is displayed. Is updated, the position of the second wiper blade 16 is detected, and the second motor lock timer incorporated in the program is updated to return to the original state. Further, as shown in FIG. 7, in step 122, the program cycle time of 2 ms is measured and the process returns to the original.

When the low speed switch of the wiper switch 2 is turned on, the first and second wiper motors 7 and 13 are turned on.
Is actuated, and while the wiping surface 90 is being wiped by the first and second wiper blades 10 and 16, snow is accumulated below the wiping surface 90, and the first wiper blade 10 causes the first wiper blade 10 to move to the first When the return movement of the above to the lower reversal position A1 is blocked in the overlap wiping area Z, the routines shown in FIGS. 8 and 9 are executed. Step 200 is a loop return point. Since it is determined in step 201 that “the wiper switch 2 has been input”, the process proceeds to step 202, and it is determined that the value of the As area is 6 or less, that is, in the overlap wiping area Z, and thus the process proceeds to step 203. The process proceeds to step 203, where "calculate angular velocity using As speed value" is executed, and the process proceeds to step 204. In step 204, it is determined that "the calculation result has exceeded the threshold value", so step 205 Move to, “Snowdrift flag set, reverse rotation position set”
Then, the process proceeds to step 207, and in step 207 it is determined that the "snowdrift flag is set". Therefore, the process proceeds to step 208 and in step 208 it is determined that the "Dr snow up / down flag is reset". Therefore, the process proceeds to step 209, "Dr output duty ratio for motor reverse rotation is determined by the value of the Dr area" and the process proceeds to step 211, where "As"
Since it is determined that the snow up / down flag has been reset, the routine proceeds to step 212, "determines the As output duty ratio of motor reverse rotation based on the value of the As area" and then proceeds to step 220. At step 220, "snow pool" Since it is determined that the flag is set ", the process proceeds to step 221, and in step 221, it is determined that the" Dr snow up / down flag is reset ", so the process proceeds to step 222 and" Dr side forward / reverse switching relay ". Is turned on "and the process proceeds to step 224. Since it is determined in step 224 that" As snow up / down flag is reset ", the process proceeds to step 225," As side forward / reverse switching relay is turned on "and step 228 And the "PWM signal of the selected duty ratio is output" is displayed and the step 2
Return to 00. Then, when the snowdrift is removed, “the calculation result does not exceed the threshold value” in step 204.
Therefore, the routine proceeds to step 206, “resets the snow accumulation flag” and then proceeds to step 207, and at steps 214 and 215, the first and second wiper blades 10 and 16 continue the wiping operation. Step two
16, step 227 is executed when the wiper switch 2 is turned off. Step 210, Step 213,
Steps 223 and 226 are executed when the snow up / down flags of Dr and As are not reset.

As described above, during the wiping operation of the first and second wiper blades 10 and 16, when it is determined that snow has accumulated below the wiping surface 90 and there is a snow pool, the second wiper blade 16 is removed. By moving in the opposite direction,
The first and second wiper blades 10 and 16 do not collide.

When the low speed switch of the wiper switch 2 is turned on, the first and second wiper motors 7 and 13 are turned on.
Is activated and the second wiper blade 16 is stopped by external force while the wiping surface 90 is being wiped by the first and second wiper blades 10 and 16, the routine shown in FIG. 10 is executed. Step 230 is a loop return point. Since it is determined in step 231 that "the wiper switch 2 is input", the process proceeds to step 232, and "the time between each pulse of the Dr and As motors is calculated". At this time, since the second wiper blade 16 is stopped by the external force, the time between the pulses of the Dr motor exceeds the threshold value. Then, at step 233 after step 232, it is determined that "the time exceeds the threshold value", so the routine proceeds to step 234, where "lock detection is set", and the routine proceeds to step 235 where "Dr" is set. Since it is determined that the motor is locked ", the process proceeds to step 239 and step 23
In "9", "Stop both motors of Dr and As" is executed, and the routine proceeds to step 242. Since it is determined in step 242 that "the wiper switch 2 has not been operated again", the routine returns to step 230. When the wiper switch 2 is operated again while the Dr and As motors are stopped, the process proceeds from step 242 to step 243. At this time, the As blade overlaps the wiping area Z.
Since it is not in the locked state outside, the routine proceeds from step 243 to step 245, and "normal operation of both Dr and As motors" is executed. Step 247 is executed when the wiper switch 2 is turned off.

As described above, when the second wiper blade 16 is stopped during the wiping operation of the first and second wiper blades 10 and 16, when the first and second wiper blades 10 and 16 are stopped,
16 is stopped. Then, when the wiper switch 2 is operated again thereafter, the first and second wiper blades 1
0 and 16 resume operation. As a result, the first and second wiper blades 10, 16 do not collide.

By turning on the low speed switch of the wiper switch 2, the first and second wiper motors 7 and 13 are turned on.
When the first wiper blade 10 is actuated and the first wiper blade 10 is stopped by the external force in the overlap wiping area Z while the wiping surface 90 is being wiped by the first and second wiper blades 10 and 16, steps 231 to 232. Then, the time between pulses of the Dr and As motors is calculated. At this time, since the first wiper blade 10 is stopped by the external force, the time between the pulses of the As motor exceeds the threshold value. Then, at step 233 after step 232, it is determined that "the time exceeds the threshold value", so the routine proceeds to step 234, where "lock detection is set", and the routine proceeds to step 235 where "Dr" is set. Motor is not locked ”
Therefore, the process proceeds to step 236, and step 2
Since it is determined in 36 that "As motor is locked", the process proceeds to step 237, and in step 237 "is locked in the overlap wiping area Z".
Since it is determined that “Dr, A
"s motor stop" is executed and the process proceeds to step 242. In step 242, it is determined that "the wiper switch 2 has not been operated again".
Return to.

When the wiper switch 2 is operated again while the Dr and As motors are stopped, step 2
42, the process proceeds to step 243. In step 243, it is determined that the As blade is not in the locked state outside the overlap wiping area Z.
5, the routine proceeds to step 230 where "normal operation of both Dr and As motors" is executed.

As described above, when the first wiper blade 10 stops in the overlap wiping area Z during the wiping operation of the first and second wiper blades 10 and 16,
The wiper blade 16 is stopped. As a result, the first,
The second wiper blades 10, 16 do not collide.

When the low speed switch of the wiper switch 2 is turned on, the first and second wiper motors 7 and 13 are turned on.
When the first wiper blade 10 is stopped outside the interference area by an external force while the wiping surface 90 is being wiped by the first and second wiper blades 10 and 16, step 231 to step 232. Transition to "Dr, A
s The time between each pulse of the motor is calculated ", and the first wiper blade 10 is stopped by the external force,
Since the time between As motor pulses exceeds the threshold,
The process proceeds from step 233 to step 234 and step 235. Since it is determined in step 235 that "Dr motor is not locked", the process proceeds to step 236, and in step 236 it is determined that "As motor is locked". Therefore, the process proceeds to step 237, and in step 237, “the lock is not in the interference area”
Therefore, the process proceeds to step 241, and "Dr motor operation, As motor stop" is executed and step 242 is executed.
Then, since it is determined that “the wiper switch has not been operated again”, the process returns to step 230.

With the As motor stopped,
When the wiper switch 2 is operated again, the process proceeds from step 242 to step 243. Since it is determined in step 243 that the “As blade is in the locked state outside the overlap wiping area Z”, the process proceeds to step 244. At 244, “If the Dr blade has reached outside the overlap wiping area Z, step 246.
, The As motor returns to normal operation, and Step 2
Return to 30.

As described above, when the first wiper blade 10 stops outside the interference area during the wiping operation of the first and second wiper blades 10 and 16, the second wiper blade 16 is operated. Can secure the driver's side view.
Further, even after the wiper switch 2 is re-operated, the first wiper blade 10 is not operated until the second wiper blade 16 reaches the outside of the interference region, so that the first and second wiper blades 10 and 16 do not collide.

In the wiper controller 1, the first wiper blade 10 overlaps the first wiper blade 10 and the second wiper blade 16 during the wiping operation of the first and second wiper blades 10 and 16. When the angular velocity exceeds a predetermined value while in the wiping area Z, the second wiper blade 16 is located at a predetermined third lower reversal position higher than the second lower reversal position A2. When the second wiper blade 16 reaches the second upper reversal position B2, the second wiper motor 13 rotates in the reverse direction, and the second wiper blade 16 rotates in the reverse direction. Is controlled to reciprocate on the wiping surface between the third lower reversal position and the second upper reversal position B2.

In the wiper control device 1, when the first wiper blade 10 is in the overlap wiping area Z and the angular velocity thereof exceeds a predetermined value, the second wiper blade 16 causes the second lower wiper blade 16 to move. When it reaches a predetermined third lower reversal position which is higher than the reversal position A2, the second wiper motor 13 is rotated forward so that the second wiper blade 16 reaches the second upper reversal position B2. When you do the second
Reversely rotate the wiper motor 13 to move the second wiper blade 16 to the third lower reversal position and the second upper reversal position B2.
Control is performed to wipe on the wiping surface between and.

[0039]

As described above, according to the wiper control device of the present invention, the controller causes the first wiper blade to move the first wiper blade during the wiping operation of the first and second wiper blades. When the angular velocity exceeds a predetermined value when the blade and the second wiper blade are in the overlap wiping area, the second wiper blade is located at a position higher than the second lower inverted position. When the second wiper motor reaches the second upper reverse position, the second wiper motor is normally rotated when the third lower reverse position is reached, and the second wiper motor is reversely rotated when the second wiper blade reaches the second upper reverse position.
Control is performed to cause the second wiper blade to reciprocally wipe on the wiping surface between the third lower reversal position and the second upper reversal position. Therefore, there is an excellent effect that the overlapping first and second wiper blades can be moved without collision.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of an embodiment of a wiper control device according to the present invention.

FIG. 2 is a schematic diagram for explaining a forward movement of a wiper blade in the wiper control device shown in FIG.

FIG. 3 is a schematic diagram for explaining the movement of the wiper blade when the wiper control device shown in FIG. 1 is returning.

FIG. 4 is a flowchart illustrating a control operation in the wiper control device shown in FIG.

5 is a flowchart illustrating a control operation in the wiper control device shown in FIG.

FIG. 6 is a flowchart illustrating a control operation in the wiper control device shown in FIG.

FIG. 7 is a flowchart illustrating a control operation in the wiper control device shown in FIG.

FIG. 8 is a flowchart illustrating a control operation in the wiper control device shown in FIG.

9 is a flowchart illustrating a control operation in the wiper control device shown in FIG.

10 is a flowchart illustrating a control operation in the wiper control device shown in FIG.

[Explanation of symbols]

1 Wiper control device 2 Wiper switch 3 First wiper 4 Second wiper 6 controller 7 First wiper motor 8 (1st wiper link) 1st link 10 First wiper blade 13 Second wiper motor 14 (Second wiper link) Second link 16 Second wiper blade 84 (Angular velocity detecting means) Motor velocity detecting stage

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Noboru Kaneko             1760 Higashimatano-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Within Automotive Electric Industry Co., Ltd. F-term (reference) 3D025 AA01 AD09 AG02 AG20 AG48                 5H001 AB10 AB12 AC01 AD02 AD05                 5H530 AA12 BB20 CD03 CD10 CD21

Claims (2)

[Claims] 1. A first wiper motor, and a first wiper motor positively rotating to cause a first wiper motor to rotate between a first upper reverse position and a first lower reverse position via a first wiper link. The first wiper having a first wiper blade that reciprocates on the wiping surface, a second wiper motor, and the second wiper motor reversely rotate to cause the first wiper to pass through the first wiper link.
Of the wiper blade overlaps a part of the wiping surface and reciprocates on the second wiping surface between the second upper reversing position and the second lower reversing position higher than the first lower reversing position. A second wiper having a second wiper blade for wiping with a controller, a controller electrically connected to the first and second wiper motors, and supplying a current to the first and second wiper motors; A wiper control device including a wiper switch electrically connected, wherein the controller has angular velocity detecting means for detecting an angular velocity of a first wiper blade, and the first and second wiper blades wipe the wiper blade. During operation, when the first wiper blade is within the overlap wiping region of the first wiper blade and the second wiper blade and the angular velocity exceeds a predetermined value, the second wiper blade When the wiper blade reaches a predetermined third lower reverse position, which is a position higher than the second lower reverse position, the second wiper motor is normally rotated, and the second wiper blade causes the second upper wiper blade to rotate. When the inversion position is reached, the second wiper motor is rotated in the reverse direction,
A wiper control device characterized in that control is performed to reciprocally wipe the second wiper blade on the wiping surface between the third lower reversal position and the second upper reversal position. 2. A first wiper motor having a first wiper motor, and the first wiper motor being positively rotated to cause a first wiper motor to move between a first upper reverse position and a first lower reverse position via a first wiper link. Has a first wiper having a first wiper blade that reciprocates and wipes on the wiping surface, and a second wiper motor, and the second wiper motor rotates in the reverse direction to cause the first wiper blade to move through the second wiper link. A second wiper blade that overlaps a part of the wiping surface of the first wiper blade and reciprocally wipes on the second wiping surface between the second upper inversion position and the second lower inversion position. A second wiper, a controller electrically connected to the first and second wiper motors and supplying a current to the first and second wiper motors, and a wiper switch electrically connected to the controller. Wiper In the control device, the controller has an angular velocity detecting means for detecting an angular velocity of the first wiper blade, and the first wiper blade overlaps with the first wiper blade and the second wiper blade. When the angular velocity exceeds a predetermined value in the lap wiping region, the second wiper blade has a predetermined third lower reversal position which is a position higher than the second lower reversal position. When the second wiper blade reaches the second upper reversal position, the second wiper motor is rotated in the reverse direction, and the second wiper blade is rotated in the third direction. A wiper control device, which controls to wipe on a wiping surface between a lower reversal position and a second upper reversal position.