JP4097412B2 - Wiper control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiper control device that controls a wiper that wipes a windshield glass of an automobile.
[0002]
[Prior art]
As this type of wiper control device, there is an apparatus in which two wiper blades overlap to wipe the wiping surface.
[0003]
[Problems to be solved by the invention]
However, in the above-described wiper control device, there is a problem that when one wiper blade stops within a range where two wiper blades overlap, another wiper blade collides with one wiper blade. .
[0004]
OBJECT OF THE INVENTION
An object of the wiper control device according to the present invention is to provide a wiper control device that can move two overlapping wiper blades so that they do not collide.
[0005]
[Structure of the invention]
[0006]
[Means for Solving the Problems]
In the wiper control device according to the first aspect of the present invention, the first wiper motor and the first wiper motor rotate forward.First linkA first wiper having a first wiper blade reciprocatingly wiping on a first wiping surface between a first upper reversal position and a first lower reversal position via a first wiper motor; When this second wiper motor rotates backwardSecond linkThrough the first wiper bladeFirstThe second wiping on the second wiping surface between the second upper reversing position and the second lower reversing position higher than the first lower reversing position in a reciprocating manner overlapping with a part of the wiping surface A second wiper having a plurality of wiper blades, a controller electrically connected to the first and second wiper motors to supply current to the first and second wiper motors, and a wiper electrically connected to the controller A wiper control device including a switch, wherein the controller includes angular velocity detection means for detecting an angular velocity of the first wiper blade, and the first wiper blade is in a state where the first and second wiper blades are being wiped. Is in the overlap wiping area between the first wiper blade and the second wiper bladeThe first wiper bladeAngular velocity ofDecreasedPredeterminedThresholdWhen the value exceeds the second wiper blade, the second wiper motor is rotated forward when the second wiper blade reaches a predetermined third lower reversal position that is higher than the second lower reversal position, When the wiper blade reaches the second upper reversal position, the second wiper motor is reversely rotated, and the second wiper blade is moved on the wiping surface between the third lower reversal position and the second upper reversal position. It is characterized by having a configuration for performing reciprocating wiping.
[0007]
In the wiper control device according to claim 2 of the present invention,The first wiper motor has a first wiper motor, and the first wiper motor reciprocates on the first wiping surface between the first upper reversal position and the first lower reversal position via the first link when the first wiper motor rotates forward. The first wiper blade having the first wiper blade to be wiped and the second wiper motor have a first wiper blade through the second link by reverse rotation of the second wiper motor. A second wiper having a second wiper blade that overlaps a portion of the wiping surface and wipes reciprocally on the second wiping surface between the second upper inverted position and the second lower inverted position; A wiper control device comprising 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,The controller has an angular velocity detecting means for detecting an angular velocity of the first wiper blade, and the first wiper blade is in an overlap wiping region where the first wiper blade and the second wiper blade overlap. In addition,The first wiper bladeAngular velocity ofDecreasedPredeterminedThresholdWhen the value exceeds the second wiper blade, the second wiper motor is rotated forward when the second wiper blade reaches a predetermined third lower reversal position that is higher than the second lower reversal position, When the wiper blade reaches the second upper reversal position, the second wiper motor is reversely rotated, and the second wiper blade is moved on the wiping surface between the third lower reversal position and the second upper reversal position.round tripIt is characterized by having a configuration for performing control to wipe off.
[0008]
[Effects of the Invention]
In the wiper control device according to the present invention, the controller is configured such that the first wiper blade is in the overlap wiping region between the first wiper blade and the second wiper blade while the first and second wiper blades are being wiped. WhenThe first wiper bladeAngular velocity ofDecreasedPredeterminedThresholdWhen the value exceeds the second wiper blade, the second wiper motor is rotated forward when the second wiper blade reaches a predetermined third lower reversal position that is higher than the second lower reversal position, When the wiper blade reaches the second upper reversal position, the second wiper motor is reversely rotated, and the second wiper blade is moved on the wiping surface between the third lower reversal position and the second upper reversal position. Control to reciprocate. Therefore, the first and second wiper blades do not collide.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
[0010]
【Example】
1 to 10 show an embodiment of a wiper control device according to the present invention. The wiper control device shown in the figure mainly includes a wiper switch 2, a first wiper 3, a second wiper 4, a washer motor 5, and a controller 6.
[0011]
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 position counter 12. It has been. The first wiper 3 is used to wipe the first wiping surface 91 arranged on the passenger seat side. The second wiper 4 includes a second wiper motor 13, a second link 14, a second wiper arm 15, a second wiper blade 16, and a second position detection arranged in pairs with the first wiper 3. A switch 17 and a second position counter 18 are provided. The second wiper 4 is used to wipe the second wiping surface 92 arranged on the driver's seat side.
[0012]
The controller 6 includes a power supply circuit 61, a reset circuit 62, a relay drive circuit 63, a first input circuit 64, a second input circuit 65, a third input circuit 66, a fourth input circuit 67, and a fifth input. Circuit 68, high / low switching command output stage (H / L switching output command) 69, first motor driving circuit (motor driving circuit) 70, first high / low switching relay (H / L switching) 71, sixth input circuit 72, a seventh input circuit 73, a second motor driving circuit (motor driving circuit) 74, a second high / low switching relay (H / L switching) 75, an eighth input circuit 76, a ninth input circuit 77, A central processing circuit ECU is provided. The central processing circuit ECU includes a first forward / reverse switching stage 78, a first PWM output stage 79, a first motor position counter 80, a second forward / reverse switching stage 81, a second PWM output stage 82, 2 motor position counter 83, motor speed detection stage 84, and arithmetic processing unit 85 are incorporated.
[0013]
The wiper switch 2 includes a stop switch (OFF), an intermittent switch (INT), a low speed switch (LO), a high speed switch (HI), Washing switch (WA) Are provided. When the intermittent switch is turned on, the wiper switch 2 sets the central processing circuit ECU through the first input circuit 64 to the intermittent mode. The wiper switch 2 puts the central processing circuit ECU in the low speed mode through the second input circuit 65 when the low speed switch is turned on. When the high speed switch is turned on, the wiper switch 2 sets the central processing circuit ECU through the third input circuit 66 to the high speed mode. When the cleaning switch is turned on, the wiper switch 2 sets the central processing circuit ECU to the cleaning mode through the fourth input circuit 67.
[0014]
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. Yes. AndOutput shaft not shownIs connected to the first pivot shaft 8 a via the first link 8, and the first wiper blade 10 is coupled to the first pivot shaft 8 a 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, the first wiper blade 10 is moved to the wiping surface 90 shown in FIG.OurOn the passenger sideOf the first wiping surface 91Between the first lower inversion position A1 and the first upper inversion position B1, reciprocating wiping is performed at a low speed. When the third brush terminal 7c is set to the low level by the first high / low switching relay 71, the first wiper motor 7 wipes the first wiper blade 10 back and forth at high speed.
[0015]
The first position detection switch 11 is connected to the first wiper motor 7.Output shaftA movable contact 11a coupled to the ground, a grounded fixed contact 11b grounded, and a power supply fixed contact 11c connected to a power source. The movable contact 11a is connected to the ground-side fixed contact 11b when the first wiper blade 10 reaches the first lower inversion position A1 by the first wiper motor 7, and the first position detection switch 11 receives the position detection signal. On the other hand, when the first wiper blade 10 is in the middle of wiping and is not at the first lower inversion position A1, it is connected to the power supply side fixed contact 11c and does not generate a position detection signal.
[0016]
The first position counter 12 is an armature shaft of the first wiper motor 7.7dThe sensor magnet 12a is fixed to the sensor magnet 12a, and the Hall IC 12b is arranged on the outer periphery of the sensor magnet 12a in a non-contact manner with the sensor magnet 12a. The first position counter 12 has an armature shaft7dIs rotated, the Hall IC 12b generates a pulse-like rotation signal, and the rotation signal is supplied to the first motor position counter 80 through the seventh input circuit 73.
[0017]
The first motor position counter 80 detects the current position of the first wiper blade 10 by counting the rotation signal given from the first position counter 12. The count value generated by the first position counter 12 is selected as a predetermined value from the first lower inversion position A1 to the first upper inversion position B1 of the first wiper blade 10. As shown in FIGS. 2 and 3, an overlap wiping region Z is a portion where the first wiper blade 10 and the second wiper blade 16 overlap. When the first wiper blade 10 reaches the first lower inversion position A1, a position detection signal is given from the first position detection switch 11, so that the count value is reset.
[0018]
In the second wiper motor 13, the first brush terminal 13a is electrically connected to the second motor drive circuit 74, and the second and third brush terminals 13b and 13c are electrically connected to the second high / low switching relay 75, respectively. Yes. AndOutput shaft not shownIs connected to the second pivot shaft 14 a via the second link 14, and the second wiper blade 16 is coupled to the second pivot shaft 14 a via the second wiper arm 15. In the second wiper motor 13, when the second brush terminal 13b is set to a low level by the second high / low switching relay 75, the armature shaft 13d rotates forward at a low speed. Then, the second wiper blade 16 is removed from the wiping surface 90 by the second link 14.OurOn the driver's sideOf the second wiping surface 92Between the second lower inversion position A2 and the second upper inversion position B2, reciprocating wiping is performed at a low speed. When the third brush terminal 13c is set to a low level by the second high / low switching relay 75, the second wiper motor 13 wipes the second wiper blade 16 back and forth at high speed.
[0019]
The second position detection switch 17 is connected to the second wiper motor 13.Output shaftAnd a grounded fixed contact 17b that is grounded, and a power supply fixed contact 17c that is connected to a power source. The movable contact 17a is moved by the second wiper motor 13 to the second wiper blade.16Is connected to the ground-side fixed contact 17b when the second lower reversal position A2 is reached, and the second position detection switch 17 generates a position detection signal. On the contrary, the second wiper blade16Is in the middle of wiping and is not at the second lower inversion position A2, it is connected to the power supply side fixed contact 17c and does not generate a position detection signal.
[0020]
The second position counter 18 is an armature shaft of the second wiper motor 13.13dAnd a Hall IC 18b disposed on the outer periphery of the sensor magnet 18a in a non-contact manner with the sensor magnet 18a. The second position counter 18 has an armature shaft13dIs rotated, the Hall IC 18 b generates a pulsed rotation signal, and the rotation signal is supplied to the second motor position counter 83 through the ninth input circuit 77.
[0021]
The second motor position counter 83 counts the rotation signal given from the second position counter 18 and detects the current position of the second wiper blade 16. The count value generated by the second position counter 18 is selected to be a predetermined value from the second lower inversion position A2 to the second upper inversion position B2 of the second wiper blade 16. As shown in FIGS. 2 and 3, an overlap wiping region Z is a portion where the first wiper blade 10 and the second wiper blade 16 overlap. When the second wiper blade 16 reaches the second lower inversion position A2, a position detection signal is given from the second position detection switch 17, so that the count value is reset.
[0022]
The first and second motor drive circuits 70 and 74 incorporate first and second forward / reverse switching relays for switching the current supply direction to the first and second wiper motors 7 and 13. The first and second motor driving circuits 70 and 74 are a central processing circuit.ECUAre driven by PWM control by first and second PWM output stages 79 and 82 incorporated in the circuit. Each of the first and second forward / reverse switching relays is normally turned on at the forward side, but when the snowdrift is detected, the reverse side is also turned on.
[0023]
When the controller 6 determines that there is a snowdrift in the overlap wiping region Z where the second wiper blades 10 and 16 overlap during the wiping operation of the first and second wiper blades 10 and 16. In addition, both the first and 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 is stopped during the wiping operation of the first and second wiper blades 10 and 16, the first wiper blade 10 is stopped outside the overlap wiping region Z where the second wiper blade 16 overlaps. The wiping operation of the second wiper blade 16 is continued. When the first wiper blade 10 is stopped during the wiping operation of the first and second wiper blades 10 and 16, the first wiper blade 10 is stopped outside the overlap wiping region Z where the second wiper blade 16 overlaps. The wiping operation of the second wiper blade 16 is continued, and the wiping operation of the second wiper blade 16 is resumed after the wiper switch 2 is operated again and the first wiper blade 10 comes out of the overlap wiping region Z. Take control.
[0024]
In the controller 6, the angular velocity of the first wiper blade 10 is detected by the angular velocity detecting means 84, and the first wiper blade 10 is moved to the first wiper blade while the first and second wiper blades 10, 16 are being wiped. 10 and the second wiper blade 16 in the overlap wiping area ZThe first wiper blade 10Angular velocity ofDecreasedPredeterminedThresholdWhen the value exceeds the second wiper motor 16 when the second wiper blade 16 reaches a predetermined third lower reversal position (not shown) that is higher than the second lower reversal position A2. 13 is rotated forward, and when the second wiper blade 16 reaches the second upper reversal position B2, the second wiper motor 13 is reversely rotated to move the second wiper blade 16 to the third lower reversal position and the second reversal position. Control is performed to perform reciprocating wiping on the wiping surface between the upper reversal position B2 of the second.
[0025]
Such a wiper control device 1 is controlled according to the flowcharts shown in FIGS. In the flowchart, the one belonging to the first wiper 3 is referred to as As, and the one belonging to the second wiper 4 is 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, the wiper switch 2 is in which mode, the state of the first and second wiper motors 7 and 13, the state of the first and second position detection switches 11 and 17, and the wiper switch 2. The state of the intermittent volume 2a is detected, and the process proceeds to step 102. In step 102, a lock detection program, which will be described later, is executed, and the process proceeds to step 103 to determine whether there is a snowdock, which will also be described later. If it is detected that there is a snowdrift, the process proceeds to step 107, snowdrift control is executed, and the process proceeds to step 110. If no snowdrift is detected, the process proceeds to step 104 and whether or not an error has occurred. Determined. The occurrence of an error means a state when the first wiper blade 10 is locked outside the overlap wiping area Z. If it is detected that this error has occurred, the routine proceeds to step 108 where control of the operation limitation of the second wiper motor 13 is executed and the routine proceeds to step 110. If no error has been detected, step 105 is performed. Migrate to In step 105, it is determined whether or not the wiper switch 2 is input. If it is determined that there is no input from the wiper switch 2, the process proceeds to step 109, and each control of stop or stop request is executed and the process proceeds to step 110. If it is determined that there is an input from the wiper switch 2, The process proceeds to 106, where each control such as the low speed mode and the high speed mode is executed, and the process proceeds to Step 110. In step 110, mutual monitoring control is executed, and the process proceeds to step 111. Mutual monitoringControlMeans that the current position of the first and second wiper blades 10 and 16 is detected by the first and second motor position counters 80 and 83 to adjust the speed of the first and second wiper blades 10 and 16. It means to do. In step 111, a lock process is executed and the routine proceeds to step 112. The lock process is to detect the state of the first and second lock counters incorporated in the program. In step 112, the PWM control signal having 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 when the first wiper motor 7 starts rotating, 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 from the first motor position counter 80 is updated, and the position of the first wiper blade 10 is detected. The first motor lock timer built in the program is updated, the presence or absence of a snowdrift is detected, and the process returns. Further, when the edge of the rotation signal generated by the second position counter 18 is detected when the second wiper motor 13 starts rotating, as shown in FIG. While the count value is updated, the counter value of the wiping area of the second wiper blade 16 given by the second motor position counter 83 is updated, and the position of the second wiper blade 16 is further detected. The second motor lock timer incorporated in the program is updated and returned to the original state. Further, as shown in FIG. 7, in step 122, 2 ms which is a program cycle time is measured and returned to the original.
[0026]
When the low speed switch of the wiper switch 2 is turned on, the first and second wiper motors 7 and 13 are operated, and the wiping surface 90 is being wiped by the first and second wiper blades 10 and 16. When the first wiper blade 10 is prevented from returning to the first lower reversing position A1 in the overlap wiping region Z due to the accumulation of snow below the wiping surface 90, FIG. 8 and FIG. The indicated routine is executed. Step 200 is a loop return point. Since it is determined in step 201 that “the wiper switch 2 is 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. In step 203, “calculate the angular velocity using the value of As speed” is executed, and the flow advances to step 204. In step 204,Because the angular velocity is decreasing,Since it is determined that “the calculation result has exceeded the threshold value”, the process proceeds to step 205, “the snowdrift flag is set, the reverse rotation position is set”, and the process proceeds to step 207. Since it is determined that the "Dr snow up / down flag has been reset", the process proceeds to step 209, and "the reverse rotation of the motor is determined by the value of the Dr area". “Dr output duty ratio is determined” and the process proceeds to step 211. In step 211, it is determined that “As snow up / down flag has been reset”. Therefore, the process proceeds to step 212, and “As of motor reverse rotation based on the value of As area” Determine the output duty ratio "and proceed to Step 220. Since it is determined in step 220 that “the snowdrift flag is set”, the process proceeds to step 221, and in step 221, it is determined that “Dr snow up / down flag is reset”, so the process proceeds to step 222, and “ When the Dr-side forward / reverse switching relay is turned on, the routine proceeds to step 224. In step 224, it is determined that the “As snow up / down flag has been reset”, so the routine proceeds to step 225, where the “As-side forward / reverse switching relay is “ON” and the process proceeds to step 228, “a PWM signal having the selected duty ratio is output”, and the process returns to step 200. And when the snowdrift is removed,The angular velocity of the first wiper blade 10 increases,Since it is determined in step 204 that “the calculation result does not exceed the threshold value”, the process proceeds to step 206, “resets the snowdrift flag”, and proceeds to step 207, and the first, The second wiper blades 10 and 16 continue the wiping operation. Steps 216 and 227 are executed when the wiper switch 2 is turned off. Step 210, step 213, step 223, and step 226 are executed when the snow up and down flags of Dr and As are not reset.
[0027]
As described above, during the wiping operation of the first and second wiper blades 10 and 16, when it is determined that snow accumulates below the wiping surface 90 and there is a snowdrift, the second wiper blade 16 is moved in the reverse direction. The first and second wiper blades 10 and 16 do not collide with each other.
[0028]
When the low-speed switch of the wiper switch 2 is turned on, the first and second wiper motors 7 and 13 are operated, and the first and second wiper blades 10 and 16 are wiping the wiping surface 90 in the middle. When the second wiper blade 16 is stopped by an external force or the like, the routine shown in FIG. 10 is executed. Step 230 is a loop return point. In step 231, it is determined that “the wiper switch 2 is input”, so the process proceeds to step 232, and “time between each pulse of the Dr and As motors is calculated”. At this time, since the second wiper blade 16 is stopped by an external force, the time between pulses of the Dr motor exceeds the threshold value. Then, in step 233 that has shifted from step 232, it is determined that “time has exceeded the threshold value”, so that the flow shifts to step 234, “lock detection is set”, the flow shifts to step 235, and “Dr” Since it is determined that the motor is locked, the process proceeds to step 239. In step 239, "Dr and As motors are stopped" is executed, and the process proceeds to step 242. In step 242, "wiper switch 2 is reset. Since it is determined that no operation has been performed, the process returns to step 230. When the wiper switch 2 is operated again while the Dr and As motors are stopped, the routine proceeds from step 242 to step 243. At this time,The first wiper blade 10, i.e.As bladeOutside the interference area, ieSince it is not in the locked state outside the overlap wiping area Z, the process 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.
[0029]
As described above, when the second wiper blade 16 is stopped while the first and second wiper blades 10 and 16 are being wiped, the first and second wiper blades 10 and 16 are stopped. After that, when the wiper switch 2 is operated again, the first and second wiper blades 10 and 16 resume their operations. As a result, the first and second wiper blades 10 and 16 do not collide.
[0030]
When the low-speed switch of the wiper switch 2 is turned on, the first and second wiper motors 7 and 13 are operated, and the first and second wiper blades 10 and 16 are wiping the wiping surface 90 during the wiping. When the first wiper blade 10 is stopped by the external force in the lap wiping area Z, the process proceeds from step 231 to step 232, and "time between each pulse of the Dr and As motors is calculated". At this time, since the first wiper blade 10 is stopped by an external force, the time between pulses of the As motor exceeds the threshold value. Then, in step 233 that has shifted from step 232, it is determined that “time has exceeded the threshold value”, so that the flow shifts to step 234, “lock detection is set”, the flow shifts to step 235, and “Dr” Since it is determined that the motor is not locked, the process proceeds to step 236. In step 236, it is determined that the As motor is locked. Therefore, the process proceeds to step 237, and in step 237, “Interference areaSince it is determined that it is “locked”, the process proceeds to step 238, “Dr, As motor stop” is executed, and the process proceeds to step 242. In step 242, the wiper switch 2 is not re-operated. ”Is returned to step 230.
[0031]
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. In step 243, the As blade isOutside interference areaIn step 245, “Dr and As motors are normally operated” is executed in step 245, and the process returns to step 230.
[0032]
As described above, when the first wiper blade 10 is stopped in the overlap wiping area Z while the first and second wiper blades 10 and 16 are being wiped, the second wiper blade 16 is stopped. . As a result, the first and second wiper blades 10 and 16 do not collide.
[0033]
When the low speed switch of the wiper switch 2 is turned on, the first and second wiper motors 7 and 13 are operated, and the wiping surface 90 is being wiped by the first and second wiper blades 10 and 16. The first wiper blade 10 is caused by external forceOverlap wiperegionZWhen stopped outside, the process proceeds from step 231 to step 232, where “the time between each pulse of the Dr and As motors is calculated”, and the first wiper blade 10 is stopped by an external force. Since the time between the two exceeds the threshold value, the process proceeds from step 233 to step 234 and step 235. In step 235, it is determined that "Dr motor is not locked", so the process proceeds to step 236, and in step 236, " Since it is determined that the “As motor is locked”, the process proceeds to step 237. In step 237, it is determined that “the motor is not locked in the interference region”, so that the process proceeds to step 241 and “Dr motor operation, As motor” "Stop" is executed and the process proceeds to step 242, and it is determined that "the wiper switch is not operated again". Back to Runode step 230.
[0034]
When the wiper switch 2 is operated again while the As motor is stopped, the process proceeds from step 242 to step 243.Outside interference areaSince it is determined that the lock state has been reached, the process proceeds to step 244. In step 244, the "Dr blade isOutside interference areaHad reached”If so, the process proceeds to step 246, the As motor returns to normal operation, and the process returns to step 230.If “Dr blade has not reached the outside of the interference area”, the process returns to step 230.
[0035]
As described above, when the first wiper blade 10 is stopped outside the interference area while the first and second wiper blades 10 and 16 are being wiped, the second wiper blade 16 is operated to operate the driver seat. The side visibility can be secured. Further, even after the wiper switch 2 is operated again, the first wiper blade 10 is not operated until the second wiper blade 16 reaches the outside of the interference area, so that the first and second wiper blades 10 and 16 do not collide.
[0036]
In the wiper control device 1, while the first and second wiper blades 10, 16 are wiping operation, the first wiper blade 10 is overlapped wiping region Z between the first wiper blade 10 and the second wiper blade 16. The angular velocity of the first wiper blade 10 whenDecreasedPredeterminedThresholdWhen the value is exceeded, the second wiper motor 16 is rotated forward when the second wiper blade 16 reaches a predetermined third lower reverse position that is higher than the second lower reverse position A2. When the second wiper blade 16 reaches the second upper reversal position B2, the second wiper motor 13 is reversely rotated, and the second wiper blade 16 is moved to the third lower reversal position and the second upper reversal position B2. Control is performed to reciprocate on the wiping surface between.
[0037]
【The invention's effect】
As described above, according to the wiper control device according to the present invention, the controller is configured such that the first wiper blade and the second wiper blade are in the wiping operation while the first wiper blade and the second wiper blade are in the second wiper operation. When in the overlap wiping area with the wiper bladeThe first wiper bladeAngular velocity ofDecreasedPredeterminedThresholdWhen the value is exceeded, the second wiper motor is rotated forward when the second wiper blade reaches a predetermined third lower reversal position that is higher than the second lower reversal position.
When the second wiper blade reaches the second upper reversal position, the second wiper motor is reversely rotated, and the second wiper blade is moved between the third lower reversal position and the second upper reversal position. Control to reciprocate on the wiping surface. Therefore, there is an excellent effect that the overlapping first and second wiper blades can be moved without colliding.
[Brief description of the 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 the movement of the wiper blade in the forward movement in the wiper control device shown in FIG. 1;
FIG. 3 is a schematic diagram for explaining the movement of the wiper blade in a backward movement in the wiper control device shown in FIG. 1;
FIG. 4 is a flowchart for explaining a control operation in the wiper control device shown in FIG. 1;
FIG. 5 is a flowchart for explaining a control operation in the wiper control device shown in FIG. 1;
6 is a flowchart for explaining a control operation in the wiper control device shown in FIG. 1;
7 is a flowchart for explaining a control operation in the wiper control device shown in FIG. 1;
FIG. 8 is a flowchart for explaining a control operation in the wiper control device shown in FIG. 1;
FIG. 9 is a flowchart for explaining a control operation in the wiper control device shown in FIG. 1;
10 is a flowchart for explaining a control operation in the wiper control device shown in FIG. 1;
[Explanation of symbols]
1 Wiper control device
2 Wiper switch
3 First wiper
4 Second wiper
6 Controller
7 First wiper motor
8First link
10 First wiper blade
13 Second wiper motor
14Second link
16 Second wiper blade
84 (Angular speed detection means) Motor speed detection stage
91 First wiping surface
92 Second wiping surface
A1 First lower inversion position
B1 First upper inversion position
A2 Second lower inversion position
B2 Second upper inversion position
Z overlap wiping area

Claims (2)

The first wiper motor reciprocates on the first wiping surface between the first upper reversal position and the first lower reversal position via the first link by forward rotation of the first wiper motor. A first wiper having a first wiper blade to wipe;
The second wiper motor and the second wiper motor reversely rotate to overlap a part of the first wiping surface of the first wiper blade via the second link , and the second upper reversal a second wiper having a second wiper blade wiping position and a second wiping surface over between the second lower reversing position of the position higher than the first lower reversal position in a reciprocating,
A controller that is electrically connected to the first and second wiper motors and supplies a current to the first and second wiper motors;
A wiper control device comprising a wiper switch electrically connected to the controller,
The controller has an angular velocity detecting means for detecting an angular velocity of the first wiper blade, and the first wiper blade and the second wiper blade are connected to the first wiper blade and the second wiper blade during the wiping operation. from the the first wiper blade angular velocity when in the overlapping wiping region of a wiper blade is greater than the threshold value set in advance decreases, the second wiper blade and the second lower reversal position When the second wiper motor reaches the second upper reversal position, the second wiper motor is rotated forward when the predetermined third lower reversal position is reached, and the second wiper blade reaches the second upper reversal position. A wiper control device that performs a control of rotating a wiper motor in a reverse direction so that the second wiper blade is wiped back and forth on a wiping surface between a third lower inverted position and a second upper inverted position. The first wiper motor has a first wiper motor, and the first wiper motor reciprocates on the first wiping surface between the first upper reversal position and the first lower reversal position via the first link when the first wiper motor rotates forward. A first wiper having a first wiper blade to wipe
The second wiper motor has a second wiper motor, and the second wiper motor rotates in reverse to overlap a part of the first wiping surface of the first wiper blade via the second link. A second wiper having a second wiper blade for reciprocally wiping on the second wiping surface between the reversal position and the second lower reversal position;
A controller that is electrically connected to the first and second wiper motors and supplies a current to the first and second wiper motors;
A wiper control device comprising a wiper switch electrically connected to the controller,
The controller has an angular velocity detecting means for detecting an angular velocity of the first wiper blade, and the first wiper blade is in an overlap wiping region where the first wiper blade and the second wiper blade overlap. When, the wiper blade of the angular velocity of the first exceeds the threshold value set in advance decreases, the third predetermined second wiper blade is positioned higher than said second lower reversal position The second wiper motor is rotated forward when the lower wiper position is reached, and the second wiper motor is rotated reversely when the second wiper blade reaches the second upper turnover position. A wiper control device that performs reciprocal wiping on the wiping surface between the third lower inversion position and the second upper inversion position.

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