JP6760020B2 - Wiper device - Google Patents

Description

The present invention relates to a wiper device.

The wiper device that wipes the windshield glass with a wiper blade operates the wiper blade attached to the tip of the wiper arm by a wiper motor that rotates by receiving power from the vehicle battery.

Generally, the higher the load of a motor, the larger the current (motor current) flowing through the windings of the motor. For example, as shown in FIG. 5, after the wiper blades 128 and 130 start the wiping operation from the upper reversal position P1 on the windshield glass 12, the snow pool before reaching the lower reversal position P2 or the storage position P3. When the wiping operation is hindered by an obstacle 82 such as, the wiper motor 118 tends to be overloaded.

Even if the wiping operation of the wiper blades 128 and 130 is hindered by the obstacle 82, when the output shaft 132 of the wiper motor 118 is to be rotated in the rotation direction 134, the winding of the wiper motor 118 is wound from the battery 80 which is a power source. A large current 84 flows, and in some cases, the electric system from the wiper motor 118 and the battery 80 to the wiper motor 118 may be damaged.

Patent Document 1 discloses a technique in which a change in a motor current is monitored by a current sensor, and when the motor current becomes excessive, the window of the vehicle is heated to consume the excessive current.

Japanese Unexamined Patent Publication No. 2006-240550

However, the technique disclosed in Patent Document 1 has a problem that when the current sensor fails, it cannot detect the case where the motor current becomes excessive.

The present invention has been made in view of the above, and an object of the present invention is to provide a wiper device capable of avoiding an overload of the wiper motor even when the current sensor is malfunctioning.

In order to solve the above-mentioned problems, the wiper device according to claim 1 controls a wiper motor for operating the wiper blade and energization of the wiper motor so that the wiper blade operates for wiping when the wiper switch is on. At the same time, if the wiper blade does not reach the predetermined second position from the predetermined first position within a predetermined time while the wiper motor is energized, the wiper motor is controlled to stop energization. It includes a control unit and a control unit.

According to this wiper device, if the wiper blade that started the wiping operation from the predetermined first position does not reach the predetermined second position within the predetermined time, the wiping operation is hindered by an obstacle. Deemed, stop energizing the wiper motor. As a result, even if the current sensor malfunctions, the wiper motor is prevented from being overloaded.

The wiper device according to claim 2 is the wiper device according to claim 1, wherein the control unit is turned on again after the ignition switch of the vehicle is turned off after the power supply of the wiper motor is stopped. When the wiper switch is on, the wiper motor is re-energized and controlled so that the wiping operation from the predetermined first position to the predetermined second position is restarted.

According to this wiper device, obstacles on the windshield glass can be eliminated by restarting the stopped wiping operation.

The wiper device according to claim 3 restarts energization of the wiper motor in accordance with a reset signal transmitted from the vehicle side control device in the wiper device according to claim 1, and starts from the predetermined first position. The wiping operation toward the predetermined second position is controlled so as to be restarted.

According to this wiper device, obstacles on the windshield glass can be eliminated by restarting the control unit when the ignition switch is turned on.

The wiper device according to claim 4 is the wiper device according to claim 1, wherein the control unit stops operation in accordance with a sleep signal transmitted from the vehicle side control device, and a wake transmitted from the vehicle side control device. According to the up signal, the energization of the wiper motor is restarted, and the wiping operation from the predetermined first position to the predetermined second position is controlled to be restarted.

According to this wiper device, an obstacle on the windshield glass can be eliminated by activating the control unit by a wakeup signal transmitted when the ignition switch is turned on.

The wiper device according to claim 3 is the wiper device according to claim 2, wherein the control unit does not reach the predetermined second position after resuming the energization of the wiper motor. If this is the case, the wiper motor is controlled to stop energization again.

According to this wiper device, if the wiper blade does not reach the predetermined second position after the wiping operation is restarted, the energization is stopped to prevent the wiper motor from being overloaded.

The wiper device according to claim 4 is the wiper device according to any one of claims 1 to 3, wherein the predetermined first position is one of the reverse positions for reversing the wiping operation. The predetermined second position is the other reversing position that reverses the wiping operation.

According to this wiper device, it is possible to prevent the wiper motor from being overloaded when the wiping operation is hindered by an obstacle existing between the two inverted positions.

The wiper device according to claim 5 includes a rotation angle sensor that detects the rotation angle of the output shaft of the wiper motor in the wiper device according to any one of claims 1 to 4, and the control unit is the control unit. The wiping operation of the wiper blade is controlled based on the rotation angle detected by the rotation angle sensor.

According to this wiper device, the position of the wiper blade can be calculated from the rotation angle of the output shaft of the wiper motor, and it can be determined whether or not the wiper blade has reached the other inverted position.

It is the schematic which shows an example of the structure of the wiper device which concerns on embodiment of this invention. It is a block diagram which shows the outline of an example of the structure of the wiper control device which concerns on embodiment of this invention. It is explanatory drawing which showed the case where the wiping operation was obstructed by an obstacle on the passenger side of the wiper device which concerns on embodiment of this invention, and (A) is just after the wiper blade started the wiping operation from the upper inversion position. (B) shows a state in which the wiper blade or the wiper arm on the passenger side interferes with an obstacle. It is a flowchart which showed an example of the processing of the wiper device which concerns on embodiment of this invention. Explanatory drawing showing a case where the wiper blade starts the wiping operation from the upper inverted position on the windshield glass and then is hindered by an obstacle such as a snow pool before reaching the lower inverted position or the storage position. Is.

FIG. 1 is a schematic view showing an example of the configuration of the wiper device 100 according to the present embodiment. The wiper device 100 is for wiping, for example, a windshield glass 12 provided in a vehicle such as a passenger car, and is a pair of wipers 14 and 16, a wiper motor 18, a link mechanism 20, and a wiper control device 10. And have.

The wipers 14 and 16 are composed of wiper arms 24 and 26 and wiper blades 28 and 30, respectively. The base ends of the wiper arms 24 and 26 are fixed to the pivot shafts 42 and 44, which will be described later, and the wiper blades 28 and 30 are fixed to the tips of the wiper arms 24 and 26, respectively.

In the wipers 14 and 16, the wiper blades 28 and 30 reciprocate on the windshield glass 12 with the operation of the wiper arms 24 and 26, and the wiper blades 28 and 30 wipe the windshield glass 12.

The wiper motor 18 has an output shaft 32 capable of forward / reverse rotation via a reduction mechanism 52 mainly composed of a worm gear. The link mechanism 20 includes a crank arm 34, a first link rod 36, a pair of pivot levers 38 and 40, a pair of pivot shafts 42 and 44, and a second link rod 46.

One end side of the crank arm 34 is fixed to the output shaft 32, and the other end side of the crank arm 34 is operably connected to one end side of the first link rod 36. Further, the other end side of the first link rod 36 is operably connected to a position near the end different from the end having the pivot shaft 42 of the pivot lever 38, and is connected to the end having the pivot shaft 42 of the pivot lever 38. Both ends of the second link rod 46 are operably connected to different ends and to the ends of the pivot lever 40 corresponding to the ends of the pivot lever 38.

Further, the pivot shafts 42 and 44 are operably supported by a pivot holder (not shown) provided on the vehicle body, and the ends of the pivot levers 38 and 40 having the pivot shafts 42 and 44 are via the pivot shafts 42 and 44. The wiper arms 24 and 26 are fixed respectively.

In the wiper device 100 according to the present embodiment, when the output shaft 32 is rotated forward and reverse at a rotation angle θ1 in a predetermined range, the rotational force of the output shaft 32 is transmitted to the wiper arms 24 and 26 via the link mechanism 20. Then, along with the reciprocating operation of the wiper arms 24 and 26, the wiper blades 28 and 30 reciprocate between the lower reversing position P2 and the upper reversing position P1 on the windshield glass 12. The value of θ1 can take various values depending on the configuration of the link mechanism of the wiper device 100 and the like, but in the present embodiment, it is 140 ° as an example.

In the wiper device 100 according to the present embodiment, as shown in FIG. 1, when the wiper blades 28 and 30 are located at the storage position P3, the crank arm 34 and the first link rod 36 are linear. It is said to be a crank structure.

The storage position P3 is provided below the downward inversion position P2. The wiper blades 28 and 30 operate at the retracted position P3 by rotating the output shaft 32 at the rotation angle θ2 from the state where the wiper blades 28 and 30 are in the downward inversion position P2. The value of θ2 can take various values depending on the configuration of the link mechanism of the wiper device and the like, but in the present embodiment, it is set to 10 ° as an example.

When θ2 is “0”, the downward inversion position P2 and the storage position P3 coincide with each other, and the wiper blades 28 and 30 stop at the downward inversion position P2 and are stored.

A wiper control device 10 for controlling the rotation of the wiper motor 18 is connected to the wiper motor 18. The wiper control device 10 according to the present embodiment controls the rotation speed of the wiper motor 18 based on the detection result of the rotation angle sensor 54 that detects the rotation speed and the rotation angle of the output shaft 32 of the wiper motor 18. The rotation angle sensor 54 is provided in the reduction mechanism 52 of the wiper motor 18, and converts the magnetic field (magnetic force) of the sensor magnet that rotates in conjunction with the output shaft 32 into an electric current for detection.

Since the wiper motor 18 according to the present embodiment has the reduction mechanism 52 as described above, the rotation speed and the rotation angle of the output shaft 32 are not the same as the rotation speed and the rotation angle of the wiper motor main body. However, in the present embodiment, since the wiper motor main body and the reduction mechanism 52 are integrally inseparably configured, the rotation speed and rotation angle of the output shaft 32 are hereinafter regarded as the rotation speed and rotation angle of the wiper motor 18. ..

The wiper control device 10 can calculate the positions of the wiper blades 28 and 30 on the windshield glass 12 from the rotation angle of the output shaft 32 detected by the rotation angle sensor 54, and the rotation speed of the output shaft 32 can be calculated according to the position. The rotation speed of the wiper motor 18 is controlled so as to change.

Further, the wiper control device 10 is connected to a wiper switch 50 that turns on or off the electric power supplied to the wiper motor 18 from the vehicle battery as a power source. The wiper switch 50 operates at a low speed operation mode selection position for operating the wiper blades 28 and 30 at a low speed, a high speed operation mode selection position for operating at a high speed, an intermittent operation mode selection position for intermittently operating the wiper blades 28 and 30, and storing (stopping). It is possible to switch to the mode selection position. Further, a signal for commanding the rotation speed according to the selected position of each mode is output to the wiper control device 10.

When the signal output from the wiper switch 50 according to the selected position of each mode is input to the wiper control device 10, the wiper control device 10 performs the control using the control corresponding to the output signal from the wiper switch 50.

FIG. 2 is a block diagram showing an outline of an example of the configuration of the wiper control device 10 according to the present embodiment. Further, the wiper motor 18 shown in FIG. 2 is, for example, a brushed DC motor.

The wiper control device 10 shown in FIG. 2 includes a drive circuit 56 that generates a voltage applied to a winding terminal of the wiper motor 18, and a microcomputer 58 that controls on and off of switching elements constituting the drive circuit 56. Includes. The electric power of the battery 80 is supplied to the microcomputer 58 via the diode 68, and the voltage of the supplied electric power is detected by the voltage detection circuit 60 provided between the diode 68 and the microcomputer 58. The detection result is output to the microcomputer 58. Further, an electrolytic capacitor C1 is provided in which one end is connected between the diode 68 and the microcomputer 58 and the other end (−) is grounded. The electrolytic capacitor C1 is a capacitor for stabilizing the power supply of the microcomputer 58. The electrolytic capacitor C1 protects the microcomputer 58 by storing a sudden high voltage such as a surge and bypassing it to the ground region.

A signal for instructing the rotation speed of the wiper motor 18 is input from the wiper switch 50 to the microcomputer 58 via the signal input circuit 62. Since the signal output from the wiper switch 50 is an analog signal, the signal is digitized in the signal input circuit 62 and input to the microcomputer 58.

Further, the microcomputer 58 is connected to a rotation angle sensor 54 that detects the magnetic field of the sensor magnet 70 that changes according to the rotation of the output shaft 32. The microcomputer 58 identifies the positions of the wiper blades 28 and 30 on the windshield glass 12 by calculating the rotation angle of the output shaft based on the signal output by the rotation angle sensor 54.

Further, the microcomputer 58 refers to the rotation speed data of the wiper motor 18 defined according to the positions of the wiper blades 28 and 30 stored in the memory 48, and the rotation of the wiper motor 18 is specified by the wiper blade 28. , The drive circuit 56 is controlled so that the number of rotations corresponds to the position of 30.

As shown in FIG. 2, the drive circuit 56 uses N-type FETs (field effect transistors), Tr1, Tr2, Tr3, and Tr4, as switching elements. In the transistor Tr1 and the transistor Tr2, the drain is connected to the battery 80 via the noise prevention coil 66, and the source is connected to the drain of the transistor Tr3 and the transistor Tr4, respectively. Further, the sources of the transistor Tr3 and the transistor Tr4 are grounded.

Further, the source of the transistor Tr1 and the drain of the transistor Tr3 are connected to one end of the winding of the wiper motor 18, and the source of the transistor Tr2 and the drain of the transistor Tr4 are connected to the other end of the winding of the wiper motor 18. ..

When a high level signal is input to each gate of the transistor Tr1 and the transistor Tr4, the transistor Tr1 and the transistor Tr4 are turned on, and the wiper motor 18, for example, the wiper blades 28 and 30 are clockwise when viewed from the passenger compartment side. The operating CW current 72 flows. Further, when one of the transistor Tr1 and the transistor Tr4 is on-controlled, the voltage of the CW current 72 can be modulated by turning the other on and off in small steps by PWM (Pulse Width Modulation) control.

Further, when a high level signal is input to each gate of the transistor Tr2 and the transistor Tr3, the transistor Tr2 and the transistor Tr3 are turned on, and the wiper motor 18, for example, the wiper blades 28 and 30 are seen from the passenger compartment side. A CCW current 74 that operates clockwise flows. Further, when one of the transistor Tr2 and the transistor Tr3 is on-controlled, the voltage of the CCW current 74 can be modulated by turning the other on and off in small steps by PWM (Pulse Width Modulation) control.

In the present embodiment, a reverse connection protection circuit 64 and a noise prevention coil 66 are provided between the battery 80 as a power source and the drive circuit 56, and the electrolytic capacitor C2 is provided in parallel with the drive circuit 56. It is provided. The noise prevention coil 66 is an element for suppressing noise generated by switching of the drive circuit 56.

The electrolytic capacitor C2 alleviates the noise generated from the drive circuit 56, stores a sudden high voltage such as a surge, and bypasses the grounded region, so that an excessive current is input to the high voltage drive circuit 56. It is an element for preventing the above.

The reverse connection protection circuit 64 is a circuit for protecting the elements constituting the wiper control device 10 when the positive electrode and the negative electrode of the battery 80 are connected in the opposite direction to the case shown in FIG. As an example, the reverse connection protection circuit 64 is composed of a so-called diode-connected FET or the like in which its own drain and gate are connected.

In addition, the wiper device 100 is provided with a current sensor using a shunt resistor in order to detect the motor current flowing through the winding of the wiper motor 18. However, in the present embodiment, the overcurrent is overcurrent even when the current sensor is malfunctioning. Since the purpose is to avoid overload due to the current sensor, a detailed description of the current sensor will be omitted.

Hereinafter, the operation and effect of the wiper device 100 according to the present embodiment will be described. FIG. 3 is an explanatory view showing a case where the wiping operation is hindered by the obstacle 82 on the passenger side of the wiper device 100 according to the present embodiment, and FIG. 3 (A) shows the wiper blades 28 and 30 in the upward inverted position. Immediately after starting the wiping operation from P1, (B) shows a state in which the wiper blade 28 or the wiper arm 24 on the passenger side interferes with the obstacle 82, respectively.

As shown in FIG. 3A, when the wiper blades 28 and 30 start the wiping operation from the upper inversion position P1 which is the start position, the wiper control device 10 of the wiper device 100 starts counting. If the wiper blades 28 and 30 have reached the goal of the lower inversion position P2 by the predetermined count number, the wiping operation is normal. As described above, in the present embodiment, the positions of the wiper blades 28 and 30 on the windshield glass 12 are calculated from the rotation angle of the output shaft 32 detected by the rotation angle sensor 54. If the calculated positions of the wiper blades 28 and 30 reach the downward reversal position P2 within a predetermined count number (predetermined time) from the start of counting, the wiping operation is normal and there is no interference by the obstacle 82. Can be regarded.

Further, even when the wiper blades 28 and 30 start the wiping operation from the downward reversing position P2, the wiper control device 10 starts counting when the wiper blades 28 and 30 start moving from the downward reversing position P2. If the wiper blades 28 and 30 reach the upper inversion position P1 by the predetermined count number, the wiping operation is normal.

As an example, the counting is performed based on the clock of the microcomputer 58 included in the wiper control device 10. The predetermined count number is determined in consideration of the fact that the wiping operation of the wiper blades 28 and 30 is affected by the action of external forces such as friction on the windshield glass 12 and running wind. For example, in consideration of the fact that the wiping operation of the wiper blades 28 and 30 is slightly delayed due to friction on the windshield glass 12 or the running wind, the wiper blades 28 and 30 are set to the upper reversal position P1 and the lower reversal position. Make it longer than the count required for one-way movement to and from P2. Further, due to the influence of the link mechanism 20 and the like, the time required for the wiping operation from the upper inversion position P1 to the lower inversion position P2 (return route wiping) and the wiping operation from the lower inversion position P2 to the upper inversion position P1 (outward route wiping) If the required time is different, the predetermined count number for the return route wiping and the predetermined count number for the outward route wiping may be set separately.

As described above, in the present embodiment, the wiper switch 50 operates the wiper blades 28 and 30 intermittently at a low speed operation mode selection position, a high speed operation mode selection position, and a constant cycle. It is possible to switch to the intermittent operation mode selection position. Therefore, it is necessary to set a predetermined count number corresponding to the low-speed operation mode, the high-speed operation mode, and the intermittent operation mode.

As shown in FIG. 3B, when the wiping operation is hindered by the obstacle 82, the wiper blades 28 and 30 cannot reach the goal downward reversal position P2 by the predetermined count number. In the present embodiment, when the wiper blades 28 and 30 that have started one of the reversing positions cannot reach the other reversing position by a predetermined count number, the drive circuit 56 is so as to stop the energization of the wiper motor 18. Is controlled so that the wiper motor 18 is not overloaded.

FIG. 4 is a flowchart showing an example of processing of the wiper device 100 according to the present embodiment. In step 400, it is determined whether or not the wiper blades 28 and 30 are located at the upper inversion position P1 or the lower inversion position P2, and in the case of an affirmative determination, in step 402, the wiper blades 28 and 30 are in the current inversion position. The count is started when the wiping operation is started from to the other reversing position.

In step 404, it is determined whether or not the wiper blades 28 and 30 have reached the other inverted position. In the case of affirmative determination in step 404, the procedure is shifted to step 402, and counting is started again with the start of the wiping operation from the reversed position reached.

In the case of a negative determination in step 404, whether or not the count number has reached a predetermined count in step 406, that is, whether or not a predetermined time has elapsed since the wiper blades 28 and 30 started the wiping operation from one of the inverted positions. Judge whether or not. In the case of a negative determination in step 406, the procedure is shifted to step 404, and it is determined whether or not the wiper blades 28 and 30 have reached the other inverted position.

If the affirmative judgment is made in step 406, the wiper blades 28 and 30 do not reach the other inverted position within a predetermined count number (predetermined time), and the wiper blade 28 is caused by an obstacle 82 on the windshield glass 12. , 30 is regarded as a case where the wiping operation is hindered, and even if the wiper switch 50 is in the ON state, the energization of the wiper motor 18 is stopped in step 408 to end the process.

Various modes can be considered for the processing after stopping the energization of the wiper motor 18. As an example, when the wiper switch 50 is continuously in any of the low-speed operation mode selection position, the high-speed operation mode selection position, and the intermittent operation mode selection position, the ignition switch of the vehicle is turned off after the power supply to the wiper motor 18 is stopped. When the wiper motor 18 is turned on again, the wiper blades 28 and 30 may be wiped off to try to eliminate the obstacle 82.

For example, when the ignition switch of the vehicle is turned off and then turned on again, a reset signal is transmitted from the vehicle side ECU (Electronic Control Unit) to the wiper control device 10, and the wiper control device 10 is reset according to the signal. , The power supply to the wiper motor 18 is restarted.

Alternatively, when the ignition switch of the vehicle is turned off, a sleep signal is transmitted from the vehicle side ECU to the wiper control device 10, and the wiper control device 10 is stopped according to the signal. Then, when the ignition switch of the vehicle is turned on again, a wake-up signal is transmitted from the vehicle side ECU to the wiper control device 10, and the wiper control device 10 resumes energization of the wiper motor 18 according to the signal.

If the wiper blades 28 and 30 do not reach the other inverted position even after resuming the energization, the energization of the wiper motor 18 is stopped. The determination that the wiper blades 28 and 30 do not reach the other reversing position even after the resumption of energization is, as an example, the wiper blades 28 and 30 are set to the other reversing position when a predetermined restart allowable time has elapsed from the resumption of energization. This is the case when it does not reach. The allowable restart time is an allowable time during which the wiper motor 18 is not damaged even if it is overloaded. The allowable restart time will be determined concretely through tests of the actual machine.

If the wiper blades 28 and 30 do not reach the other reversing position even after resuming energization, if the other reversing position is the lower reversing position P2, the wiper blades 28 and 30 are stopped at the current position and the other reversing position is set. If it is the upper reversal position, the wiper blades 28 and 30 are inverted from the current position, and the wiper motor 18 is controlled to be energized so as to be moved to the other inverted position or the storage position P3 which is the lower inverted position P2 and stopped.

As described above, in the present embodiment, when the wiper blades 28 and 30 that have started the wiping operation from one reversing position do not reach the other reversing position within a predetermined time, the energization of the wiper motor 18 is stopped. , Prevents an overcurrent from flowing through the wiper motor 18 and the electric system related to the wiper motor 18. The current of the electric system can also be detected by a current sensor using a shunt resistor, but if the electric sensor is malfunctioning, the overcurrent state cannot be detected, and the electric system related to the wiper device 100 and the battery 80 It may be damaged. However, with the wiper device 100 according to the present embodiment, even if the current sensor is malfunctioning, it is possible to avoid overloading the wiper motor 18 and the electric system related to the wiper motor 18.

10 ... Wiper control device, 12 ... Windshield glass, 14, 16 ... Wiper, 18 ... Wiper motor, 20 ... Link mechanism, 24, 26 ... Wiper arm, 28, 30 ... Wiper blade, 32 ... Output shaft, 34 ... Crank arm, 36 ... Link rod, 38, 40 ... Pivot lever, 42, 44 ... Pivot shaft, 46 ... Link rod, 48 ... Memory, 50 ... Wiper switch, 52 ... Reduction mechanism, 54 ... Rotation angle sensor, 56 ... Drive circuit, 58 ... Microcomputer, 60 ... Voltage detection circuit, 62 ... Signal input circuit, 64 ... Reverse connection protection circuit, 66 ... Noise prevention coil, 68 ... Diode, 70 ... Sensor magnet, 72 ... CW current, 74 ... CCW current, 80 ... Battery, 82 ... Obstacle, 84 ... Large current, 100 ... Wiper device, 118 ... Wiper motor, 128, 130 ... Wiper blade, 132 ... Output shaft, 134 ... Rotation direction, θ1, θ2 ... Rotation angle, C1, C2 ... Electrolytic Capacitor, P1 ... Upper inversion position, P2 ... Lower inversion position, P3 ... Storage position, Tr1, Tr2, Tr3, Tr4 ... Diode

Claims (7)

The wiper motor that operates the wiper blade and
The energization of the wiper motor is controlled so that the wiper blade operates in a wiping operation when the wiper switch is on, and the wiper blade starts from a predetermined first position within a predetermined time while the wiper motor is energized. A control unit that controls to stop energization of the wiper motor when it does not reach a predetermined second position.
Wiper device including. The control unit is turned on again after the ignition switch of the vehicle is turned off after the power supply of the wiper motor is stopped, and when the wiper switch is turned on, the power supply to the wiper motor is restarted. The wiper device according to claim 1, wherein the wiper device for controlling the wiping operation from the predetermined first position to the predetermined second position is restarted. The control unit resumes energization of the wiper motor according to a reset signal transmitted from the vehicle-side control device, and restarts the wiping operation from the predetermined first position to the predetermined second position. The wiper device according to claim 1, wherein the wiper device is controlled so as to. The control unit stops the operation according to the sleep signal transmitted from the vehicle side control device, resumes the energization of the wiper motor according to the wakeup signal transmitted from the vehicle side control device, and resumes the energization of the wiper motor. The wiper device according to claim 1, wherein the wiper device for controlling the wiping operation from the position to the predetermined second position is restarted. The control unit controls to stop the energization of the wiper motor again when the wiper blade does not reach the predetermined second position after resuming the energization of the wiper motor. The wiper device according to any one of 4. Any of claims 1 to 5, wherein the predetermined first position is one reversing position for reversing the wiping operation, and the predetermined second position is the other reversing position for reversing the wiping operation. The wiper device according to item 1. Includes a rotation angle sensor that detects the rotation angle of the output shaft of the wiper motor.
The wiper device according to any one of claims 1 to 6, wherein the control unit controls the wiping operation of the wiper blade based on the rotation angle detected by the rotation angle sensor.