JP4995699B2 - Opposite wiper wiper device - Google Patents

Description

  The present invention relates to a counter-wiping type wiper device provided with a pair of wiper blades arranged so as to overlap each other at a central portion of a windshield.

  2. Description of the Related Art Conventionally, a vehicle such as an automobile is provided with a wiper device for wiping off deposits such as rain and snow adhering to a windshield and splashes of a front vehicle to ensure a driver's view. As the wiper device provided in the vehicle, a counter-wiping type wiper device in which a pair of motors rotating in the forward and reverse directions are arranged opposite to each other on the left and right sides of the vehicle in order to reduce the mounting space of the wiper device in an engine room or the like. It has been known. This counter-wiping type wiper device is configured to reciprocate a pair of wiper blades arranged so as to overlap each other at the center portion of the windshield by rotating each motor in the forward and reverse directions. Therefore, the opposed wiping type wiper device has a movable part such as a link mechanism as compared with a general wiper device (tandem type wiper device) in which a pair of wiper blades are reciprocally wiped by a single motor via a link mechanism. Therefore, it is possible to reduce the mounting space.

  As the counter-wiping type wiper device, for example, a technique described in Patent Document 1 is known. In the counter-wiping wiper device described in Patent Document 1, motors having control devices are arranged opposite to each other on the driver seat side (DR side) and on the passenger seat side (AS side), and between the control devices. Are provided with communication lines for electrically connecting the control devices. Each control device exchanges the operation angle data of each motor via a communication line, and thereby, the operation state of the other party is grasped so that each wiper blade can be operated synchronously without interfering with each other. .

Each control device operates independently (fail-safe operation) so that each wiper blade does not interfere when communication failure is detected due to disconnection of the communication line or the like. That is, the DR-side control device continuously performs the reciprocating wiping operation on the DR-side wiper blade, and the AS-side control device performs the reciprocating wiping operation by narrowing the wiping range of the AS-side wiper blade to a range that does not interfere with the DR-side wiper blade. The AS-side wiper blade is stopped at the upper reverse position after a predetermined time has elapsed.
JP 2007-176263 A

  However, according to the counter-wiping type wiper device described in Patent Document 1 described above, when a communication failure occurs between the control devices, the AS-side wiper blade wipes a narrow wiping range and after a predetermined time has elapsed. Since it is stopped, the wiping range on the windshield is approximately halved, which may cause anxiety to the operator. Therefore, it is necessary to devise rotation control of each motor so that a fail-safe operation capable of securing a sufficient wiping range can be performed.

  An object of the present invention is to provide a counter-wiping wiper device that can secure a sufficient wiping range and reduce anxiety to an operator even when a communication failure occurs between the control devices. .

  An opposed wiping type wiper device according to the present invention includes a first wiper blade and a second wiper blade that are arranged so as to overlap each other at a central portion of a windshield, and each wiper blade is turned upside down by turning on an operation switch. An opposing wiping type wiper device that performs a reciprocating wiping operation between positions, a first driving force transmission mechanism that transmits a driving force to the first wiper blade, and a first output that drives the first driving force transmission mechanism A first motor having a shaft and a first rotating shaft that rotationally drives the first output shaft; and a first motor that is provided in the first motor and outputs a first position signal in accordance with a rotational position of the first output shaft. Position signal output means, first rotation signal output means provided in the first motor and outputting a first rotation signal in accordance with the rotation state of the first rotation shaft, the first position signal and the first rotation A first control device that receives a signal and controls rotation of the first motor based on the output signals; and the first control device that is provided in the first control device and that rotates the first motor according to an operation state of the operation switch. A first control map storage unit for storing first map data used for control; and a first output signal provided in the first control device for outputting the first position signal and the first rotation signal to the outside. An output unit; a second driving force transmission mechanism that transmits a driving force to the second wiper blade; a second output shaft that drives the second driving force transmission mechanism; and a second rotation that rotationally drives the second output shaft. A second motor having a shaft, a second position signal output means provided in the second motor and outputting a second position signal in accordance with a rotational position of the second output shaft, and provided in the second motor, The rotational shape of the second rotating shaft Second rotation signal output means for outputting a second rotation signal in response to the second position signal, and the second position signal and the second rotation signal are input, and the second motor controls the rotation of the second motor based on the output signals. A control device, a second control map storage unit that is provided in the second control device and stores second map data used to control rotation of the second motor according to an operation state of the operation switch; A second output signal output unit provided in the second control device for outputting the second position signal and the second rotation signal to the outside, and electrically between the first control device and the second control device; A communication line that is connected and passes the first and second map data between the first and second control devices, and is electrically connected between the first output signal output unit and the second control device; , The first position signal and the A first signal line for sending a first rotation signal to the second control device, and electrically connected between the second output signal output unit and the first control device, and the second position signal and the first control signal And a second signal line for sending a two-rotation signal to the first control device, and the first and second control devices use the first and second signal lines when communication via the communication line is interrupted. Switching to rotation control of the first and second motors is characterized.

  In the counter wiping type wiper device according to the present invention, when switching to rotation control of the first and second motors by the first and second signal lines, the first and second wiper blades are larger than normal. A reciprocating wiping operation is performed with an angle difference.

  According to the present invention, the first and second control devices are switched to rotation control of the first and second motors using the first and second signal lines when communication via the communication line is interrupted. The reciprocating wiping operation of each wiper blade can be continued while grasping the operation state of the other party. Therefore, each wiper blade can wipe the wiping range similar to that during rotation control of each motor by the communication line, and it is possible to secure a sufficient wiping range and reduce anxiety to the operator.

  According to the present invention, when switching to the rotation control of the first and second motors by the first and second signal lines, the first and second wiper blades are reciprocated with a larger angle difference than normal. Since it operates, it is possible to indicate to the operator that it is abnormal.

  Hereinafter, an embodiment of a counter-wiping wiper device according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram for explaining a counter-wiping wiper device mounted on a vehicle according to the present invention, FIG. 2 is an explanatory diagram for explaining the structure of a wiper motor, FIG. 3 is a block diagram showing the structure of a control device, FIG. 4 is an explanatory diagram for explaining the A-phase, B-phase pulse signal, and reference signal.

  As shown in FIG. 1, a windshield 11 as a windshield is attached to the vehicle 10, and the windshield 11 is disposed on the ceiling portion 12 a forming the vehicle body 12 and the left and right sides of the vehicle 10. It is supported by a pair of front pillar parts 12b.

  A counter-wiping type wiper device 13 is mounted on the lower end side of the windshield 11 in order to wipe off deposits such as rain and snow attached to the windshield 11 and splashes of the front car to ensure the driver's visibility. Has been. This counter-wiping type wiper device 13 includes a DR-side wiper device 14a disposed on the driver's seat side (DR side) of the vehicle 10, and an AS-side wiper device 14b disposed on the passenger seat side (AS side) of the vehicle 10. The wiper devices 14 a and 14 b are configured in the same manner, and are disposed opposite to each other on the left and right sides of the vehicle 10.

  The wiper devices 14a and 14b have a DR-side wiper blade (first wiper blade) 15a and an AS-side wiper blade (second wiper blade) 15b. The wiper blades 15a and 15b are in the stop state shown in FIG. They are arranged at the storage positions. In the stopped state, the DR-side wiper blade 15a is arranged at a central portion of the windshield 11 so as to overlap the AS-side wiper blade 15b with a predetermined interval.

  The wiper blades 15a and 15b are rotatably mounted on the distal end sides of the DR side and AS side wiper arms 16a and 16b, and the base end sides of the wiper arms 16a and 16b are on the DR side and AS side fixed to the vehicle 10, respectively. The pivot shafts 17a and 17b are rotatably mounted. On the base end side of the wiper arms 16a and 16b, DR side and AS side drive pins 18a and 18b for swinging the wiper arms 16a and 16b are provided, and the drive pins 18a and 18b are connected to the pivot shafts 17a and 17b. Thus, the wiper blades 15a and 15b reciprocate in the DR-side and AS-side wiping ranges 19a and 19b on the windshield 11 by reciprocating in the forward and reverse directions in the forward and reverse directions.

  The DR-side wiper motor (first motor) 20a and the AS-side wiper motor (second motor) 20b constituting the wiper devices 14a and 14b include a DR-side output shaft (first output shaft) 21a and an AS-side output shaft (second output shaft). ) 21b, and one end side of the DR side and AS side link plates 22a and 22b rotated with the rotation of the output shafts 21a and 21b is fixed to the output shafts 21a and 21b.

  Between the link plates 22a and 22b and the drive pins 18a and 18b, DR side and AS side link rods 23a and 23b are provided, and both end sides of the link rods 23a and 23b are the link plates 22a and 22b and the drive pins 18a. , 18b are pivotally connected to both. Here, the first driving force transmission mechanism and the second power transmission mechanism in the present invention are configured by wiper arms 16a and 16b, link rods 23a and 23b, and link plates 22a and 22b.

  As shown in FIG. 2, the wiper motors 20a and 20b include DR side and AS side motor parts 24a and 24b, and DR side and AS side gear case parts 25a and 25b. A DR side shaft (first rotating shaft) 26a and an AS side shaft (second rotating shaft) 26b are rotatably provided inside the motor units 24a and 24b. The shafts 26a and 26b have a large driving current. Accordingly, it rotates at a predetermined rotation speed.

  DR side and AS side reduction mechanisms 27a and 27b are accommodated in the gear case portions 25a and 25b. The speed reduction mechanisms 27a and 27b are constituted by a DR side and AS side worms 28a and 28b formed integrally with the shafts 26a and 26b, and a DR side and AS side worm wheels 29a and 29b with the output shafts 21a and 21b fixed at the center. It is configured. The worm wheels 29a and 29b are rotatably provided on the gear case portions 25a and 25b, and the worm wheels 29a and 29b and the worms 28a and 28b are engaged with each other so as to transmit power to each other. As a result, the rotation of the shafts 26a and 26b is decelerated to a predetermined speed, and the increased torque can be output to the outside via the output shafts 21a and 21b.

  As shown by a two-dot chain line in FIG. 2, DR side and AS side control boards 30a and 30b are provided inside the gear case portions 25a and 25b. The control boards 30a and 30b include output shafts 21a and 21b. DR side MR sensor (first position signal output means) 31a that outputs position signals (first and second position signals) of the output shafts 21a and 21b according to the rotation angle and AS side MR sensor (second position signal output) Means) 31b is provided. The control boards 30a and 30b output a rotation signal (first and second rotation signals) corresponding to the rotation state of the shafts 26a and 26b, and a pair of DR side Hall ICs (first rotation signal output). Means) 32a and AS side Hall IC (second rotation signal output means) 32b are provided.

  Here, the MR sensors 31a and 31b continuously output voltage signals (analog signals) according to the relative rotation of the DR side and AS side ring magnets 34a and 34b fixed to the worm wheels 29a and 29b. It has become. Further, the Hall ICs 32a and 32b output a high or low rectangular wave signal (pulse signal) according to the relative rotation of the DR side and AS side multipolar magnets 35a and 35b fixed to the shafts 26a and 26b. It has become. However, each sensor is not limited to the magnetic sensor as described above, and for example, an optical sensor having a photo interrupter can also be used.

  The control boards 30a and 30b are provided with a DR-side control device (first control device) 33a and an AS-side control device (second control device) 33b. The control devices 33a and 33b include MR sensors 31a and 31b and The output signals from the Hall ICs 32a and 32b are received. Then, the control devices 33a and 33b calculate DR-side control data and AS-side control data for determining the operating angles of the wiper blades 15a and 15b in accordance with output signals from the sensors, and use them as DR-side and AS-side control data. Based on this, the rotation of the wiper motors 20a and 20b is controlled.

  A wiper switch (operation switch) 37 provided in the passenger compartment (not shown) or the like is electrically connected to the DR-side control board 30a. A communication line 38 is electrically connected between the control boards 30a and 30b, and the communication line 38 passes DR side and AS side control data between the control devices 33a and 33b, respectively. Yes.

  In addition to the communication line 38, a fail-safe communication line (first and second signal lines) 39 is electrically connected between the control boards 30a and 30b. The fail-safe communication line 39 is connected to each DR side. The output signal of the sensor is sent to the AS side, and the output signal of each sensor on the AS side is sent to the DR side. In other words, the fail-safe communication line 39 can be detected from the output signals of the sensors between the control devices 33a and 33b even when the communication line 38 is disconnected for some reason and communication of the DR side and AS side control data is interrupted. It plays a role to make it possible to grasp the operation state of the other party.

  The control devices 33a and 33b are configured as shown in FIG. Output signals from MR sensors 31a and 31b and Hall ICs 32a and 32b (see FIG. 2) provided in the wiper motors 20a and 20b are shown in the DR side and AS side drive control arithmetic units 50a and 50b as indicated by arrows in the figure. The DR side and AS side control data is calculated by being inputted.

  DR-side and AS-side motor drive control units 51a and 51b are electrically connected to the drive control calculation units 50a and 50b, and the motor drive control units 51a and 51b receive DR from the drive control calculation units 50a and 50b. Side and AS side control data is generated, and a duty value for PWM driving is superimposed to generate DR side and AS side driving currents that can drive the wiper motors 20a and 20b. 20b is supplied to each.

  An SW state detection unit 52 is electrically connected to the DR side drive control calculation unit 50a, and the SW state detection unit 52 receives an operation signal (a signal indicating an ON operation or an OFF operation) from the wiper switch 37. It comes to recognize. Here, the operation signal indicating the ON operation from the wiper switch 37 includes a High signal (high speed), a Low signal (low speed), an Int signal (intermittent), and the like.

  The drive control calculation units 50a and 50b are DR-side control map storage units (first control) for storing DR-side and AS-side map data (first and second map data) used to control rotation of the wiper motors 20a and 20b. A map storage unit) 53a and an AS-side control map storage unit (second control map storage unit) 53b are provided. The control map storage units 53a and 53b store a target speed map based on an operation signal (High signal, Low signal, Int signal) from the wiper switch 37 and a target angle difference map between the other wiper blades 15a and 15b. Has been. The DR side and AS side control data are calculated while referring to these map information.

  The drive control arithmetic units 50a and 50b are electrically connected to the DR side and AS side switching units 54a and 54b. The switching units 54a and 54b perform communication control by the communication line 38 and pulses by the fail-safe communication line 39. It is designed to switch between control. The switching units 54a and 54b are electrically connected to the DR side and AS side communication state detection units 55a and 55b. The communication state detection units 55a and 55b are provided between the communication state detection units 55a and 55b. The communication state (normal or abnormal) of the communication line 38 is detected. When the switching units 54a and 54b are switched to communication control, the DR side and AS side control data are input to the drive control calculation units 50a and 50b via the switching units 54a and 54b.

  DR-side and AS-side A-phase pulse signal output units 56a and 56b and DR-side and AS-side B-phase pulse signal output units 57a and 57b are electrically connected to the drive control arithmetic units 50a and 50b. An output signal (A phase pulse signal) from one of the pair of Hall ICs 32a and 32b is input to the A phase pulse signal output units 56a and 56b. An output signal (B phase pulse signal) from the other Hall IC 32a, 32b of the pair is input to 57b. Here, the first and second rotation signals in the present invention are composed of the DR side, AS side A phase pulse signal and the DR side, AS side B phase pulse signal.

  The A-phase and B-phase pulse signals are output as shown in FIG. 4 in accordance with the rotation control of the wiper motors 20a and 20b, and each pulse signal is output with a phase shift of 90 degrees (deg). . The DR-side A-phase and B-phase pulse signals are sent from the DR-side A-phase and B-phase pulse signal output units 56a and 57a to the AS-side control device 33b via signal lines a1 and b1. . The AS-side A-phase and B-phase pulse signals are sent from the AS-side A-phase and B-phase pulse signal output units 56b and 57b to the DR-side control device 33a via the signal lines a2 and b2. .

  DR-side and AS-side reference signal output units 58a and 58b are electrically connected to the drive control arithmetic units 50a and 50b, and output signals from the MR sensors 31a and 31b are connected to the reference signal output units 58a and 58b. Is entered. As shown in FIG. 4, the reference signal output units 58a and 58b convert the output signals from the MR sensors 31a and 31b into pulse signals. That is, as shown in FIG. 4, when the voltage output (v) output from the MR sensors 31a and 31b according to the angle (deg) of the worm wheels 29a and 29b is V1 (white circle in the figure), the lower inversion position. , V2 (black circle in the figure) is the upper reversal position, and is high when the angle of the worm wheels 29a, 29b is between the lower reversal position and the upper reversal position (see FIG. 1), otherwise A pulse-like signal is generated so as to be low.

  Associating the angles of the worm wheels 29a and 29b with the voltage signals V1 and V2, as shown in FIG. 1, wiper blades 15a and 15b are arranged at the lower inversion position and the upper inversion position on the windshield 11, and the MR at that time This is done by measuring the output signals of the sensors 31a and 31b and storing them in a nonvolatile memory such as an EEPROM (not shown).

  Here, the first and second position signals in the present invention are composed of pulsed DR side and AS side reference signals as shown in FIG. Further, the first and second output signal output units of the present invention include DR side and AS side A phase pulse signal output units 56a and 56b, DR side and AS side B phase pulse signal output units 57a and 57b, DR side and AS side. It is comprised by the side reference signal output part 58a, 58b.

  The reference signal output units 58a and 58b mutually send the pulsed DR side and AS side reference signals converted by the reference signal output units 58a and 58b to the control devices 33a and 33b via the signal lines c1 and c2. It is like that. The fail-safe communication line 39 is composed of a total of six signal lines a1, a2, b1, b2, c1, and c2, and the signal lines a1, b1, and c1 among them are the first signal line in the present invention and the signal lines. a2, b2, and c2 constitute the second signal line in the present invention.

  DR-side and AS-side A-phase pulse signal input portions 59a and 59b are electrically connected to the switching portions 54a and 54b, and the A-phase pulse signal input portions 59a and 59b are connected via signal lines a1 and a2. Thus, the DR-side and AS-side A-phase pulse signals are input from the counterpart A-phase pulse signal output units 56a and 56b. DR-side and AS-side B-phase pulse signal input units 60a and 60b are electrically connected to the switching units 54a and 54b. The B-phase pulse signal input units 60a and 60b are connected via signal lines b1 and b2. Thus, the DR side and AS side B phase pulse signals are input from the counterpart B phase pulse signal output sections 57a and 57b. The DR side and AS side reference signal input parts 61a and 61b are electrically connected to the switching parts 54a and 54b. The reference signal input parts 61a and 61b are connected to the other party via signal lines c1 and c2. The DR side and AS side reference signals are input from the reference signal output units 58a and 58b. The DR side and AS side A phase pulse signals, the DR side and AS side B phase pulse signals, and the DR side and AS side reference signals are transmitted to the switching units 54a and 54b when the switching units 54a and 54b are switched to pulse control. Via the drive control arithmetic units 50a and 50b.

  Next, the operation of the counter-wiping wiper device 13 configured as described above will be described with reference to FIG. FIG. 5 is a flowchart showing the operation of the counter-wiping wiper device of FIG.

  As shown in FIG. 5, when the system power is turned on by turning on an ignition switch (not shown) (step S1), initialization processing of the counter-wiping wiper device 13, that is, the count value of the pulse signal Is reset (step S2). Next, the wiper motors 20a, 20b are stopped in step S3, and the process proceeds to step S4. In step S4, it is determined whether or not the wiper switch 37 has been turned on by the operator. If it is determined to be no, the process of returning to step S3 is repeated until it is determined to be yes.

  If the wiper switch 37 is turned on by the operator and determined to be yes, a communication state confirmation process is executed in the subsequent step S5. In the communication status confirmation process, for example, the communication status detection units 55a and 55b mutually send inspection currents (weak currents) to the communication line 38, and the communication status detection units 55a and 55b detect the counterpart inspection current. . In subsequent step S6, it is determined whether or not a communication abnormality (disconnection, etc.) of the communication line 38 has been detected by the communication state detection units 55a and 55b. If it is determined to be no (normal determination), the process proceeds to step S7, and yes. Is determined (abnormality determination), the process proceeds to step S12.

  In step S7, the switching units 54a and 54b switch to communication control (normal control) using the communication line 38. Next, in step S8, normal control by the communication line 38 is executed based on a predetermined control logic (not shown).

  In step S8, the DR side and AS side control data calculated based on the map information on the DR side and AS side are transferred between the wiper devices 14a and 14b via the communication line 38, and the wiper blades 15a and 15b are exchanged. The wiper motors 20a and 20b are controlled to rotate so as to move without interference. As a result, the wiper motors 20a and 20b perform speed control based on the operation signal of the wiper switch 37 and angle control according to the target angle difference between the wiper blades 15a and 15b, so that the wiping ranges 19a and 19b on the windshield 11 are accurate. The reciprocating wiping operation can be performed well.

  In step S9, it is determined whether or not the wiper switch 37 is turned off. If the wiper switch 37 is still turned on (no), the process returns to step S8 to continue the reciprocating wiping operation (normal time). To do. On the other hand, if it is determined that the wiper switch 37 is turned off (yes), the process proceeds to step S10. In step S10, a storing operation for stopping the wiper blades 15a and 15b at the storing position shown in FIG. 1 is executed, and then the process proceeds to step S11, where the operation of the counter-wiping wiper device 13 is ended.

  In step S12, the switching units 54a and 54b switch to the pulse control (control at the time of abnormality) by the fail-safe communication line 39. Next, in step S13, control at the time of abnormality by the fail-safe communication line 39 is performed based on a predetermined control logic. In the abnormal control by the fail-safe communication line 39, since the communication line 38 has a poor communication, it is impossible to accurately control the rotation of the wiper motors 20a and 20b by obtaining the map information of the other party. Therefore, the rotation control of the wiper motors 20a and 20b is simplified in order to cause the wiper blades 15a and 15b to perform a reciprocating wiping operation.

  In step S13, the DR-side and AS-side drive control arithmetic units 50a and 50b respectively transmit the counterpart A-phase pulse signal, B-phase pulse signal and reference signal, and their own A-phase pulse signal, B-phase pulse signal and reference signal. The wiper motors 20a and 20b are controlled to rotate at a predetermined timing so that the wiper blades 15a and 15b do not interfere with each other at the minimum. Specifically, the angle difference between the wiper blades 15a and 15b is set so that the angle difference becomes larger than normal, and the wiper motors 20a and 20b are controlled to rotate under this state. Yes. Here, the angle difference between the wiper blades 15a and 15b is set such that, for example, when the operation signal from the wiper switch 37 is a high signal, the angle difference is larger than when the operation signal is a low signal. To do.

  In step S14, it is determined whether or not the wiper switch 37 is turned off. If the wiper switch 37 is still turned on (no), the process returns to step S13 to continue the reciprocating wiping operation (at the time of abnormality). To do. On the other hand, when it determines with the wiper switch 37 having been turned off (yes), it progresses to step S15. In step S15, a storing operation for stopping the DR-side wiper blade 15a at the storing position shown in FIG. 1 is executed, and the AS-side wiper blade 15b is moved to the storing position following the storing operation of the DR-side wiper blade 15a. Is done. Then, it progresses to step S16 and the operation | movement of the opposing wiping type wiper apparatus 13 is complete | finished.

  As described in detail above, according to the counter-wiping type wiper device 13 according to the present embodiment, the DR-side and AS-side control devices 33a and 33b are capable of fail-safe communication lines when communication via the communication line 38 is interrupted. 39, switching to rotation control of the DR side and AS side wiper motors 20a, 20b is performed, so that each control device 33a, 33b reciprocates the DR side and AS side wiper blades 15a, 15b while grasping the operation state of the other party. The wiping operation can be continued. Accordingly, the wiper blades 15a and 15b can wipe the DR side and AS side wiping ranges 19a and 19b, respectively, which are the same as when the rotation of the wiper motors 20a and 20b is controlled by the communication line 38 (during normal operation). It is possible to secure a range and reduce anxiety to the operator.

  Furthermore, according to the counter-wiping wiper device 13 according to the present embodiment, the wiper blades 15a and 15b are larger than normal when the rotation of the wiper motors 20a and 20b by the fail-safe communication line 39 is abnormal (when abnormal). Since the reciprocating wiping operation is performed with an angle difference, the change in the operation of the wiper blades 15a and 15b can be clearly transmitted to the operator, and the operator can promptly prompt the operator to take measures such as repairing the communication line 38. It becomes.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the counter wiping type wiper device 13 is applied to a device that wipes the windshield 11 of the vehicle 10, but the present invention is not limited to this, and a rear glass as a winshield is used. The present invention can also be applied to a counter-wiping type wiper device for wiping.

It is explanatory drawing explaining the opposing wiping type wiper apparatus which concerns on this invention mounted in the vehicle. It is explanatory drawing explaining the structure of a wiper motor. It is a block diagram which shows the structure of a control apparatus. It is explanatory drawing explaining an A phase, a B phase pulse signal, and a reference signal. It is a flowchart which shows operation | movement of the opposing wiping type wiper apparatus of FIG.

Explanation of symbols

10 Vehicle 11 Windshield (windshield)
DESCRIPTION OF SYMBOLS 12 Car body 12a Ceiling part 12b Front pillar part 13 Opposite wiping-type wiper apparatus 14a DR side wiper apparatus 14b AS side wiper apparatus 15a DR side wiper blade (1st wiper blade)
15b AS side wiper blade (second wiper blade)
16a DR side wiper arm (first driving force transmission mechanism)
16b AS side wiper arm (second driving force transmission mechanism)
17a DR side pivot shaft 17b AS side pivot shaft 18a DR side drive pin 18b AS side drive pin 19a DR side wiping range 19b AS side wiping range 20a DR side wiper motor (first motor)
20b AS side wiper motor (second motor)
21a DR output shaft (first output shaft)
21b AS side output shaft (second output shaft)
22a DR side link plate (first driving force transmission mechanism)
22b AS side link plate (second driving force transmission mechanism)
23a DR side link rod (first driving force transmission mechanism)
23b AS side link rod (second driving force transmission mechanism)
24a DR side motor part 24b AS side motor part 25a DR side gear case part 25b AS side gear case part 26a DR side shaft (first rotating shaft)
26b AS side shaft (second rotary shaft)
27a DR-side reduction mechanism 27b AS-side reduction mechanism 28a DR-side worm (deceleration mechanism)
28b AS side worm (deceleration mechanism)
29a DR side worm wheel (deceleration mechanism)
29b AS side worm wheel (deceleration mechanism)
30a DR side control board 30b AS side control board 31a DR side MR sensor (first position signal output means)
31b AS side MR sensor (second position signal output means)
32a DR side Hall IC (first rotation signal output means)
32b AS side Hall IC (second rotation signal output means)
33a DR side control device (first control device)
33b AS side control device (second control device)
34a DR side ring magnet 34b AS side ring magnet 35a DR side multi-pole magnet 35b AS side multi-pole magnet 37 Wiper switch (operation switch)
38 communication lines 39 fail-safe communication lines (first signal line, second signal line)
50a DR side drive control calculation unit 50b AS side drive control calculation unit 51a DR side motor drive control unit 51b AS side motor drive control unit 52 SW state detection unit 53a DR side control map storage unit (first control map storage unit)
53b AS-side control map storage (second control map storage)
54a DR side switching unit 54b AS side switching unit 55a DR side communication state detection unit 55b AS side communication state detection unit 56a DR side A phase pulse signal output unit (first output signal output unit)
56b AS side A-phase pulse signal output section (second output signal output section)
57a DR side B phase pulse signal output section (first output signal output section)
57b AS side B-phase pulse signal output section (second output signal output section)
58a DR side reference signal output unit (first output signal output unit)
58b AS side reference signal output unit (second output signal output unit)
59a DR side A phase pulse signal input section 59b AS side A phase pulse signal input section 60a DR side B phase pulse signal input section 60b AS side B phase pulse signal input section 61a DR side reference signal input section 61b AS side reference signal input section a1, b1, c1 signal lines (first signal lines)
a2, b2, c2 signal lines (second signal lines)

Claims (2)

A first wiper blade and a second wiper blade arranged so as to overlap each other at the center portion of the windshield, and each wiper blade is operated to reciprocate between the lower reverse position and the upper reverse position when the operation switch is turned on. A wiping type wiper device,
A first driving force transmission mechanism for transmitting a driving force to the first wiper blade;
A first motor having a first output shaft for driving the first driving force transmission mechanism and a first rotation shaft for rotationally driving the first output shaft;
A first position signal output means provided in the first motor for outputting a first position signal in accordance with a rotational position of the first output shaft;
A first rotation signal output means provided in the first motor for outputting a first rotation signal according to a rotation state of the first rotation shaft;
A first controller that receives the first position signal and the first rotation signal and controls the rotation of the first motor based on the output signals;
A first control map storage unit that is provided in the first control device and stores first map data used to control rotation of the first motor according to an operation state of the operation switch;
A first output signal output unit provided in the first control device for outputting the first position signal and the first rotation signal to the outside;
A second driving force transmission mechanism for transmitting a driving force to the second wiper blade;
A second motor having a second output shaft for driving the second driving force transmission mechanism and a second rotation shaft for rotationally driving the second output shaft;
A second position signal output means provided in the second motor for outputting a second position signal in accordance with a rotational position of the second output shaft;
A second rotation signal output means provided in the second motor for outputting a second rotation signal according to a rotation state of the second rotation shaft;
A second controller that receives the second position signal and the second rotation signal and controls the rotation of the second motor based on the output signals;
A second control map storage unit that is provided in the second control device and stores second map data used to control rotation of the second motor in accordance with an operation state of the operation switch;
A second output signal output unit provided in the second control device for outputting the second position signal and the second rotation signal to the outside;
A communication line that is electrically connected between the first control device and the second control device and passes the first and second map data between the first and second control devices;
A first signal line that is electrically connected between the first output signal output unit and the second control device, and sends the first position signal and the first rotation signal to the second control device;
A second signal line that is electrically connected between the second output signal output unit and the first control device and that sends the second position signal and the second rotation signal to the first control device; ,
The first and second control devices switch to rotation control of the first and second motors using the first and second signal lines when communication via the communication line is interrupted. Wiper device.   2. The counter-wiping type wiper device according to claim 1, wherein when the first and second motors are controlled to rotate by the first and second signal lines, the first and second wiper blades are in a normal state. A counter-wiping type wiper device characterized in that a reciprocating wiping operation is performed with a large angle difference.

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