JP2017202744A - Vehicular wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular wiper device that can efficiently remove a view obstacle, such as dirt.SOLUTION: When an operation signal from a view obstacle removal mode switch is detected, a controller controls the vehicular wiper device to conduct a wiping operation while jetting washer liquid on a side in an opposite direction to a side in a proceeding direction of a wiper blade (106 to 112) and then conduct a wiping operation without jetting washer liquid (114 to 118).SELECTED DRAWING: Figure 7

Description

  The present invention relates to a vehicle wiper device that performs spraying of washer liquid and wiping operation by a wiper blade.

  2. Description of the Related Art In general, a vehicle wiper device that performs a spray of washer liquid and a wiping operation by a wiper blade in an interlocking manner is known.

  In recent years, due to the problem of the washer liquid injection position, the problem of the design of the vehicle, and the like, nozzles for injecting the washer liquid are provided in the wiper arm and the wiper blade (for example, Patent Documents 1 and 2). .

  In the vehicle wiper device of Patent Document 1, a main nozzle is provided at the tip of the wiper arm, and the nozzle main body of the main nozzle protrudes to one side in the width direction of the wiper arm. In addition, an inclined surface constituting the outer peripheral portion of the nozzle main body is disposed on the arm base end side with respect to the first main nozzle injection hole of the nozzle main body, and toward the arm lower side as viewed from the side, toward the arm base end side. It is inclined. For this reason, most of the airflow that flows from the arm proximal end side to the arm distal end side on the side of the wiper arm is rectified by the inclined surface and flows to the upper side of the nozzle body along the inclined surface. Thereby, the inflow of the airflow between the windshield glass and the nozzle body part is suppressed, and the contact between the cleaning liquid and the airflow injected from the first main nozzle injection hole can be suppressed.

  Moreover, in patent document 2, it is set as the structure which injects a washing | cleaning liquid from the porous provided in the wiper blade.

Japanese Patent Laying-Open No. 2015-217842 Special table 2014-501199 gazette

  However, in Patent Documents 1 and 2, the washer liquid can be ejected from the wiper arm and the wiper blade, but since the washer liquid is wiped before effectively contributing to the visual field obstruction such as dirt, the visibility of dirt and the like is lost. There is room for improvement in order to remove the inhibitor efficiently.

  In view of the above facts, an object of the present invention is to provide a vehicle wiper device that can efficiently remove visual field obstructions such as dirt.

  The vehicle wiper device according to the present invention pressure-feeds the washer liquid to a wiper motor that performs a wiping operation of a wiping surface by a wiper blade connected to the tip of the wiper arm, and a spray unit provided in at least one of the wiper blade and the wiper arm. A washer pump for injecting the washer liquid from the injection unit onto the wiping surface, a direction control unit for controlling the direction of the injection unit to inject the washer liquid, and when a predetermined signal is detected, The wiper motor, the washer pump, and the direction control unit so as to execute a first operation for performing the wiping operation while spraying a washer liquid in a direction opposite to a traveling direction side of the wiper blade during the wiping operation. And a control unit for controlling.

  According to the vehicle wiper device having the above configuration, the wiping operation of the wiping surface is performed by the wiper blade connected to the tip of the wiper arm by the wiper motor.

  The spray unit is provided on at least one of the wiper blade and the wiper arm, and the washer liquid is sprayed from the spray unit to the wiping surface by pumping the washer liquid to the spray unit by the washer pump. Further, the direction control unit controls the direction (outward direction and return direction) in which the washer liquid of the injection unit is injected.

  In the control unit, for example, when a predetermined signal of a signal indicating that a visual field obstruction is detected or a signal indicating an operation of a switch or the like for removing the visual field obstruction is detected, a wiping operation is being performed. The wiper motor, the washer pump, and the direction control unit are controlled so as to execute the first operation of performing the wiping operation while spraying the washer liquid in the direction opposite to the traveling direction side of the wiper blade. In this way, by performing the wiping operation while spraying the washer liquid in the direction opposite to the direction of the wiper blade, the washer liquid is effectively wiped away, and the washer liquid can be effectively used to remove visual obstructions such as dirt. Can contribute.

  In the vehicle wiper device according to the present invention, the control unit performs the wiping operation without spraying the washer liquid or the wiping operation while spraying the washer liquid in the traveling direction after the first operation. To control the wiper motor, the washer pump, and the direction control unit.

  According to the vehicle wiper device having the above-described configuration, after the first operation, the wiping operation or the wiping operation while injecting the washer liquid can be performed to reliably remove the visual field obstruction such as dirt. Therefore, it is possible to provide a vehicle wiper device that can efficiently remove a visual field obstruction such as dirt.

  In addition, the vehicle wiper device of the present invention further includes a meandering portion that meanders the ejection trajectory of the washer fluid when the washer fluid is ejected from the ejection portion.

  According to the vehicle wiper device configured as described above, it is possible to uniformly inject the washer liquid onto the wiping surface.

  Further, in the vehicle wiper device according to the present invention, the injection unit is in a direction intersecting with the traveling direction of the wiper blade on the traveling direction side and a direction intersecting with the opposite direction of the traveling direction of the wiper blade on the opposite direction side. The washer liquid can be injected in each direction, and the meandering unit controls the washer pump so that the injection pressure of the washer liquid changes when the washer liquid is injected from the injection unit.

  According to the vehicle wiper device having the above configuration, the washer liquid can be sprayed in each of the direction intersecting with the traveling direction of the wiper blade and the direction intersecting with the opposite direction of the traveling direction, and the spraying trajectory of the washer liquid can be changed. Can meander.

  In the vehicle wiper device according to the present invention, the angle at which the injection unit injects the washer liquid on each of the traveling direction side and the opposite direction side can be changed, and the meandering unit injects the washer liquid. When injecting from the unit, the injection unit is controlled so as to change the angle at which the washer liquid is injected on each of the traveling direction side and the opposite direction side of the injection unit.

  According to the vehicle wiper device having the above configuration, the angle of spraying the washer liquid to each of the traveling direction side and the opposite direction side of the wiper blade can be changed, and the spraying trajectory of the washer liquid is changed by changing the spraying angle. Can meander.

  Further, in the vehicle wiper device according to the present invention, as the first operation, the control unit performs the wiping operation while injecting the washer liquid also in the traveling direction side, the wiper motor, the washer pump, and the Control the direction controller.

  According to the vehicle wiper device configured as described above, in the first operation, the wiping operation is performed while spraying the washer liquid also on the traveling direction side of the wiper blade. It can be removed.

  Further, the vehicle wiper device according to the present invention further includes a changing unit that changes a wiping range of the wiping surface by the wiper blade, and the control unit performs the wiping operation while changing the wiping range. Further control the changing unit.

  According to the vehicle wiper device having the above configuration, since the wiping operation is performed while changing the wiping range, it is possible to remove a visual field obstruction such as dirt over a wider range than when performing the wiping operation without changing the wiping range. It becomes.

It is the top view seen from the outer side of the wiping surface which shows the whole wiper apparatus for vehicles which concerns on this embodiment. It is a figure which shows the injection direction of a washer liquid. It is a block diagram which shows the structure of the control apparatus which controls the wiper apparatus for vehicles which concerns on this embodiment. (A) is a figure which shows the wiping operation | movement to the outward rotation direction of a wiper blade, injecting a washer liquid to a backward rotation direction side, (B), while injecting a washer liquid to an outward rotation direction side It is a figure which shows the wiping operation | movement to the return path rotation direction of a wiper blade. (A) is a figure which shows a mode that the injection locus | trajectory of a washer liquid meanders, (B) is a figure which shows the periodic change of the injection pressure of a washer liquid. (A) is a figure which shows the position of the wiper arm at the time of the reciprocating wiping operation | movement of a wiper arm, (B) is a figure which shows an example of the drive voltage of a 2nd washer pump, (C) is a drive of a 1st washer pump. It is a figure which shows an example of a voltage. It is a flowchart which shows an example of the flow of the process performed with the controller of the wiper apparatus for vehicles which concerns on this embodiment. (A) is a figure which shows the position of the wiper arm at the time of the reciprocating wiping operation | movement of a wiper arm, (B) is a figure which shows the modification of the drive voltage of a 2nd washer pump, (C) is a figure which shows the 1st washer pump. It is a figure which shows the modification of a drive voltage. It is a figure which shows a mode that it ejects without making the ejection locus | trajectory of a washer liquid meander. It is a figure which shows the structure of the wiper apparatus for vehicles which can change the wiping range by a wiper blade. (A) is a figure which shows a mode that the wiper arm extended | expanded apparently, (B) is a figure which shows a mode that the wiper arm contracted apparently. (A) is a figure which shows the mode of operation | movement of the link mechanism in the wiping range Z1, (B) is a figure which shows the mode of operation | movement of the link mechanism in the wiping range Z2.

  Hereinafter, an example of this embodiment will be described in detail with reference to the drawings. FIG. 1 is a plan view seen from the outside of a wiping surface showing the entire wiper device for a vehicle according to the present embodiment.

  As shown in FIG. 1, a vehicle wiper device 10 includes a substantially long wiper arm 12 and a wiper blade 14 that is connected to the tip of the wiper arm 12 and wipes a windshield glass WG as a wiping surface of the vehicle. It is configured to include. Further, the vehicle wiper device 10 includes a first main nozzle 18 and a second main nozzle 20 provided near the tip of the wiper arm 12, and a first sub nozzle 21 and a second sub nozzle 22 provided near the middle of the wiper arm 12. And as an injection part.

  The wiper arm 12 includes an arm head 12A, a retainer 12B, an arm piece 12C, and an arm side connecting member 12D. The arm head 12 </ b> A constitutes the proximal end portion of the wiper arm 12, the retainer 12 </ b> B constitutes the intermediate portion in the longitudinal direction of the wiper arm 12, and the arm piece 12 </ b> C and the arm side connecting member 12 </ b> D constitute the distal end portion of the wiper arm 12.

  The arm head 12A is formed in a substantially rectangular column shape, and is made of, for example, aluminum die cast. A fixing portion 15 is formed at the base end portion of the arm head 12 </ b> A, and a distal end portion of a substantially columnar pivot shaft 17 is fastened and fixed to the fixing portion 15. The pivot shaft 17 is rotatably supported by a pivot holder (not shown) fixed to a vehicle frame or the like, and is connected to a wiper motor (not shown) via a link mechanism. The pivot shaft 17 is reciprocally rotated by the driving force of the wiper motor, whereby the wiper arm 12 is reciprocally rotated, and the wiper blade 14 connected to the tip of the wiper arm 12 is moved between the lower inversion position and the upper inversion position. It is designed to reciprocate. Further, in this embodiment, the position where the wiper blade 14 is hidden between the engine hood of the vehicle on the arrow B direction side (the vehicle lower side) in FIG. 1 with respect to the lower inversion position is the storage position, and the storage is performed when the wiping operation is stopped. The wiper blade 14 is stored at the position. Therefore, the wiper motor is not configured to continuously rotate in one direction, but is configured to reciprocally rotate the wiper blade 14 by reversing the rotation between the upper reversal position and the lower reversal position. The wiper motor uses an electric motor provided with a control circuit that controls the rotation speed by PWM (pulse width modulation) control or the like. The direction of arrow A in FIG. 1 from the lower reverse position to the upper reverse position of the wiper blade 14 is the forward rotation direction, and the direction of arrow B in FIG. The direction of movement. That is, the reverse position of the wiper blade 14 from the forward path to the backward path is the upper reverse position, and the reverse position from the backward path to the forward path is the lower reverse position. Further, in the present embodiment, a configuration example in which the wiper blade 14 is driven in the normal rotation and reverse rotation to store the wiper blade 14 in the storage position as described above will be described. However, the wiper motor is assumed to have the storage position (stop position) as the lower reverse position. You may apply the structure rotated in one direction.

  On the other hand, the wiper blade 14 is formed in a substantially long shape and is arranged side by side with the wiper arm 12 in the longitudinal direction, and the longitudinal center portion of the wiper blade 14 is connected to the arm of the wiper arm 12 via the connecting lever 19. It is connected to the tip of the side connecting member 12D. Accordingly, when viewed from the direction orthogonal to the wiping surface S, the wiper blade 14 is disposed on the forward rotation direction side with respect to the wiper arm 12 (a portion excluding the arm side connecting member 12D). Then, the reciprocating wiping operation by the wiper blade 14 is performed by the reciprocating rotation of the wiper arm 12.

  Further, washer liquid is ejected from each of the first main nozzle 18, the second main nozzle 20, the first sub nozzle 21, and the second sub nozzle 22 provided in the wiper arm 12.

  The first main nozzle 18 and the first sub-nozzle 21 inject the washer liquid toward the forward rotation direction side of the wiper arm 12, and the second main nozzle 20 and the second sub-nozzle 22 are the washer liquid toward the backward rotation direction side of the wiper arm 12. Inject.

  The first main nozzle 18 and the second main nozzle 20 are each provided with a plurality of injection holes, and the washer liquid is injected from the plurality of injection holes. In the present embodiment, each of the first main nozzle 18 and the second main nozzle 20 has three injection holes, and as shown in FIG. 2, the washer from each injection hole in a direction intersecting with the rotation direction of the wiper arm 12. Spray liquid.

  On the other hand, the first sub-nozzle 21 and the second sub-nozzle 22 are provided closer to the pivot shaft 17 than the first main nozzle 18 and the second main nozzle 20, and from the injection holes provided in the first sub-nozzle 21 and the second sub-nozzle 22. The washer liquid is sprayed in a direction intersecting with the rotation direction of the wiper arm 12.

  In the present embodiment, when a washer liquid is ejected by operating a washer switch 36 (see FIG. 3) described later, the wiper arm 12 wipes from the first main nozzle 18 and the first sub-nozzle 21 when the wiper arm 12 rotates forward. The washer liquid is sprayed to the forward rotation side of the blade 14. On the other hand, when the wiper arm 12 rotates in the backward direction, washer liquid is ejected from the second main nozzle 20 and the second sub nozzle 22 to the backward rotation side of the wiper blade 14. At this time, the washer fluid is injected at each predetermined position immediately before rotating in the forward rotation direction and reaching the upper reverse position and immediately before rotating in the backward rotation direction and reaching the lower reverse position. Stop. Then, by switching the nozzles (first main nozzle 18 and second main nozzle 20 and first sub nozzle 21 and second sub nozzle 22) that are sprayed at each reversal position and restarting the spraying, wasteful washer fluid spraying is prevented. It is supposed to be.

  FIG. 3 is a block diagram illustrating a configuration of the control device 50 that controls the vehicle wiper device 10 according to the present embodiment.

  The control device 50 includes a wiper motor 32, a first washer pump 34, a second washer pump 35, and a controller 30 as a control unit.

  The wiper motor 32 is driven to reciprocate the wiper arm 12. Further, the first washer pump 34 pumps the washer liquid to the first main nozzle 18 and the first sub nozzle 21 to thereby wash the washer from each of the injection holes and the first sub nozzle 21 provided in the first main nozzle 18. Spray the liquid. Further, the second washer pump 35 pumps the washer liquid to the second main nozzle 20 and the second sub nozzle 22 to thereby wash the washer from each of the injection holes provided in the second main nozzle 20 and the second sub nozzle 22. Spray the liquid. The wiper motor 32, the first washer pump 34, and the second washer pump 35 are each connected to the controller 30, and each drive is controlled by the controller 30.

  The controller 30 is further connected to a washer switch 36, a wiper switch 38, a visual field obstruction release mode switch 40, a vehicle ECU (Electronic Control Unit) 42, and a receiver 43 provided on the vehicle side.

  The washer switch 36 is a switch that gives an instruction for injecting the washer fluid. When the washer switch 36 is operated by an occupant, the operation result is input to the controller 30.

  In the present embodiment, when the washer switch 36 is operated by an occupant to instruct to inject the washer liquid, the operation result of the washer switch 36 is input to the controller 30. When the operation result of the washer switch 36 is input to the controller 30, the controller 30 immediately drives the washer pump 34 based on the operation result of the washer switch 36 to inject a predetermined amount of washer liquid, and then the wiper motor 32. Start driving. That is, when the washer switch 36 is operated, the controller 30 controls the wiper motor 32 and the washer pump 34 so that the washer liquid is sprayed and the wiper blade 14 is wiped.

  The wiper switch 38 is a switch that gives an instruction to start the wiping operation by the wiper blade 14, and an operation result is input to the controller 30 when the wiper switch 38 is operated by an occupant. The wiper switch 38 can be instructed to operate the wiping operation speed by the wiper blade 14 at a plurality of speeds. When the operation result of the wiper switch 38 is input to the controller 30, the controller 30 starts the wiping operation by the wiper blade 14 by driving the wiper motor 32 at the instructed speed based on the operation result of the wiper switch 38. In the present embodiment, the speed of the wiping operation by the wiper blade 14 when the wiper switch 38 is operated will be described as an example having four speeds of intermittent operation, low speed, medium speed, and high speed.

  The visual field obstruction cancellation mode switch 40 is a switch for instructing a predetermined visual field obstruction canceling operation for removing visual field obstructions such as dirt attached to the surface of the windshield glass WG as the visual field obstruction. . The visual field obstruction releasing operation is performed by a predetermined combination of the washer liquid injection and the wiper blade 14 wiping operation. In the present embodiment, in order to issue a visual field obstruction release instruction separately from each instruction of the wiping operation of the wiper blade 14 and the washer liquid injection, a dedicated switch is provided separately from the washer switch 36 and the wiper switch 38. ing. The operation result is input to the controller 30 when the visual field obstruction cancellation mode switch 40 is operated by the occupant. The controller 30 controls driving of the first washer pump 34, the second washer pump 35, and the wiper motor 32 so as to perform a predetermined visual field obstruction release operation based on the operation result of the visual field obstruction release mode switch 40. .

  The vehicle ECU 42 is connected to the controller 30 to acquire various types of vehicle information. In this embodiment, the controller 30 can acquire information for detecting that the vehicle is stopped from the vehicle ECU 42. ing. For example, the controller 30 acquires the detection result of the shift position of the transmission of the vehicle, the detection result of the vehicle speed, the detection result of the acceleration, and the like from the vehicular ECU 42 as information for detecting that the vehicle is stopped. And in this embodiment, when the controller 30 detects that it is a stop state, it controls to perform the above-mentioned visual field inhibition cancellation | release operation | movement.

  The receiver 43 is a receiver for receiving an instruction of a predetermined visual field obstruction releasing operation that is performed to remove a visual field obstruction such as dirt attached to the surface of the windshield glass WG as a visual field obstruction. The visual field obstruction releasing operation is performed by a predetermined combination of the washer liquid injection and the wiper blade 14 wiping operation. When an instruction of a visual field obstacle releasing operation is transmitted from an external terminal 45 such as a smartphone by an occupant (a person who will be in the vehicle from now on), the instruction is received by the receiver 43 and input to the controller 30. The controller 30 controls the driving of the first washer pump 34, the second washer pump 35, and the wiper motor 32 so as to perform a predetermined visual field obstruction release operation based on an instruction for the visual field obstruction release operation.

  Here, the above-described visual field obstruction cancellation operation performed by operating the visual field obstruction cancellation mode switch 40 will be described in detail.

  In this embodiment, when the visual field obstruction cancellation mode switch 40 is operated in a stopped state, the visual field obstruction cancellation operation combining the washer fluid injection and the wiping operation by the wiper blade 14 is performed as described above.

  Specifically, when the visibility obstruction release mode switch 40 is operated, the controller 30 acquires various types of information (including transmission shift position, vehicle speed, and acceleration) from the vehicle ECU 42, so that the vehicle is stopped. Detect whether or not there is. When the stop state is detected, the controller 30 performs a predetermined operation combining the reciprocating wiping operation by the wiper blade 14 and the washer fluid injection, and the wiper motor 32, the first washer pump 34, and the first 2 The washer pump 35 is controlled.

  Specifically, as an initial operation, the washer liquid is sprayed to both the forward rotation direction side and the backward rotation direction side of the wiper arm 12 as shown in FIG. . That is, a one-way wiping operation is performed by the wiper blade 14 while spraying the washer liquid in both directions of the wiper blade traveling direction and in the opposite direction of the traveling direction. The washer fluid injection start timing at the start of the initial operation may be the same as the start of the wiping operation on the forward direction side (first main nozzle 18 and first sub nozzle 21), but before the wiping operation is started. The wiping operation can be performed smoothly by starting to eject the liquid. On the other hand, for the backward direction side (the second main nozzle 20 and the second sub nozzle 22), after the wiping operation is started or after a predetermined time has elapsed since the start of the wiping operation, the washer liquid is started to be ejected, so that it is out of the wiping range (such as a cowl). It is possible to prevent the washer liquid from being ejected unnecessarily. Note that the first operation described later may be performed without executing the initial operation.

  Next, when the one-way wiping operation of the initial operation by the wiper blade 14 is finished, as shown in FIG. 4A, as the first operation, the jetting of the washer liquid in the forward rotation direction side is stopped and the return pass is performed. The wiping operation of the wiper blade 14 in the forward rotation direction is performed while spraying the washer liquid toward the rotation direction. In other words, the forward rotation of the wiper blade 14 is performed while the spraying of the washer liquid from the first main nozzle 18 and the first sub nozzle 21 is stopped and the washer liquid is sprayed from the second main nozzle 20 and the second sub nozzle 22. Wiping operation in the direction is performed. Further, when the wiper blade 14 moves to the upper reversal position, the wiper blade 14 is reversed and switched to the wiping operation in the backward rotation direction. As shown in FIG. 4 (B), the wiping operation in the backward rotation direction is performed by wiping the wiper liquid while stopping the injection of the washer liquid in the backward rotation direction side and injecting the washer liquid in the forward rotation direction side. The wiping operation of the blade 14 in the backward rotation direction is performed. In other words, the backward rotation of the wiper blade 14 is performed while the spraying of the washer liquid from the second main nozzle 20 and the second sub nozzle 22 is stopped and the washer liquid is sprayed from the first main nozzle 18 and the first sub nozzle 21. Wiping operation in the direction is performed. That is, as the first operation, the reciprocating wiping operation is performed by the wiper blade 14 while spraying the washer liquid to the side opposite to the moving direction of the wiper blade 14. When performing the wiping operation from each inversion position in the first operation, the washer liquid is started to be sprayed after the wiping operation is started or after the wiping operation is started and a predetermined time has elapsed, so that the washer is wasted outside the wiping range. It is possible to prevent the liquid from being ejected.

  Subsequently, when the first operation is finished, as a second operation, the spraying of the washer liquid is stopped, and the windshield glass WG is wiped up by performing a one-way wiping operation by the wiper blade 14 to perform a series of operations. finish.

  The controller 30 controls the wiper motor 32 so that the wiper blade 14 is wiped at a speed slower than the wiping speed when the wiper switch 38 is operated in the rain. May be. Visibility obstruction removal performance can be improved by setting the wiping speed to a slower speed than in rainy weather.

  Further, in this embodiment, since the spray direction of the washer liquid is sprayed in a direction intersecting with the rotation direction of the wiper arm 12 (the traveling direction of the wiper blade 14), the spray pressure is changed so that the windshield glass WG is uniformly formed. The washer fluid can be distributed. For example, as shown in FIG. 5A, when the wiping operation of the wiper arm 12 is performed, the washer liquid is ejected to the opposite side to the rotation direction of the wiper arm 12 (the forward rotation direction in FIG. 5A). By changing the jet pressure, the jet trajectory of the washer liquid (the trace connecting the landing points of the washer liquid) meanders. Thereby, a washer liquid can be uniformly sprayed on the windshield glass WG whole surface. The injection pressure at this time periodically changes as shown in FIG. 5B, for example, by controlling the drive voltage. Specifically, as shown in FIG. 6 (A), during the one-way wiping operation of the wiper arm 12 in the initial operation, as shown in FIGS. 5 (B) and 5 (C), the first washer pump 34 and By periodically changing the drive duty of each of the second washer pumps 35, the pressure of the washer liquid is changed to inject the washer liquid. As a result, the trajectory of the washer liquid meanders in accordance with the rotation of the wiper arm 12 and can be uniformly injected onto the windshield glass WG. Subsequently, in the reciprocating wiping operation of the wiper arm 12 in the first operation, the ejection of the washer liquid in the rotation direction of the wiper arm 12 is stopped, and the drive duty of the washer pump on the opposite side to the rotation direction is periodically changed. . As a result, as shown in FIG. 5A, the washer liquid can meander and be ejected on the side opposite to the rotation direction of the wiper arm 12. Then, in the last reciprocation of the wiper arm 12 in the second operation, the application of voltage to the washer pump is stopped and the wiping operation by the wiper blade 14 is performed.

  Next, a specific process performed by the controller 30 of the vehicle wiper device 10 according to the present embodiment configured as described above will be described. FIG. 7 is a flowchart illustrating an example of a flow of processing performed by the controller 30 of the vehicle wiper device 10 according to the present embodiment. Note that the processing of FIG. 7 starts when the visual field obstruction cancellation mode switch 40 is operated, but is not limited thereto. For example, the processing may be started when a visual field obstruction of the windshield glass WG is detected from a photographed image photographed by a photographing device such as a camera. That is, it includes a predetermined signal including at least one of an operation signal of the visual field obstacle release mode switch 40, a visual field obstacle detection signal, and an instruction signal for the visual field obstacle release operation received from the external terminal 45 by the external receiver 43. Starts when a detected signal is detected.

  In step 100, the controller 30 determines whether or not the vehicle is stopped. In this determination, the controller 30 acquires vehicle information such as a shift position detection result, a vehicle speed detection result, and an acceleration detection result from the vehicle ECU 42, and whether or not the vehicle is in a stopped state from the acquired vehicle information. Determine whether. If the determination is negative, the process is terminated without performing the visual field obstacle releasing operation. If the determination is positive, the process proceeds to step 102. That is, in this embodiment, the visual field obstruction release operation is performed by performing the subsequent processing when the vehicle is in a stopped state.

  In step 102, the controller 30 starts the wiping operation by the wiper blade 14, performs control so that the washer liquid is ejected to both the forward path direction side and the backward path direction side, and the process proceeds to step 104. That is, the controller 30 controls to drive the wiper motor 32, the first washer pump 34, and the second washer pump 35. Thus, the washer liquid is ejected from the first main nozzle 18 and the first sub nozzle 21 by the first washer pump 34 while the wiping operation is performed, and the washer liquid is ejected from the second main nozzle 20 and the second sub nozzle 22 by the second washer pump 35. Be injected. At this time, when the first washer pump 34 and the second washer pump 35 are controlled, the washer fluid is ejected while changing the ejection pressure, for example, by periodically changing the duty ratio of the applied voltage. Specifically, the controller 30 applies the voltage shown in FIG. 6C to the first washer pump 34 while driving the wiper motor 32, and applies the voltage shown in FIG. 6B to the second washer pump 35. Control to do. As a result, the jet trajectory of the washer liquid meanders and can be uniformly jetted to the front surface of the windshield glass WG, so that visual obstacles such as dirt can be efficiently removed.

  In step 104, the controller 30 determines whether or not the rotation of the wiper arm 12 has completed one reciprocation. This determination is based on the detection result of a sensor or the like that detects the position of the rotary shaft provided in the wiper motor 32, and determines whether or not the initial operation has ended. Then, the wiping operation and the washer liquid injection are continued until the determination is affirmed, and then the process proceeds to step 106.

  In step 106, the controller 30 controls to stop the jetting of the washer liquid in the forward path direction, and to perform the wiping operation in the forward path while spraying the washer liquid in the backward path direction, and the process proceeds to step 108. That is, the controller 30 stops the voltage application to the first washer pump 34 as shown in FIG. 6C while driving the wiper motor 32, and the voltage shown in FIG. 6B is applied to the second washer pump 35. Control to apply. As a result, the washer liquid can be ejected in the direction opposite to the traveling direction of the wiper blade 14 during the forward wiping operation, and the ejection locus can be made to meander.

  In step 108, the controller 30 determines whether or not the wiper blade 14 connected to the tip of the wiper arm 12 has been rotated to the upper reverse position. This determination is made based on the detection result of a sensor or the like that detects the position of the rotary shaft provided in the wiper motor 32, and waits until the determination is affirmed, and the process proceeds to step 110.

  In step 110, the controller 30 performs control so as to perform the wiping operation on the return path direction side by switching the spray direction of the washer liquid to the forward path direction side, and the process proceeds to step 112. That is, the controller 30 stops the voltage application to the second washer pump 35 as shown in FIG. 6B while driving the wiper motor 32, and the voltage shown in FIG. 6C is applied to the first washer pump 34. Control to apply. Thereby, also about the wiping operation | movement of a return path | route, a washer liquid can be injected to the opposite side to the advancing direction of the wiper blade 14, and an injection locus can be made to meander.

  In step 112, the controller 30 determines whether or not the wiper blade 14 connected to the tip of the wiper arm 12 has been rotated to the lower reverse position. This determination is based on the detection result of a sensor or the like that detects the position of the rotary shaft provided in the wiper motor 32, and determines whether or not the first operation has been completed, and waits until the determination is affirmed (step 114). Migrate to In this way, while performing the wiping operation by the wiper blade 14, the washer liquid can be effectively contributed to the removal of visual field obstructions such as dirt by ejecting the washer liquid to the opposite side of the moving direction of the wiper arm 12. .

  In step 114, the controller 30 controls to stop the spraying of the washer liquid and perform the wiping operation, and proceeds to step 116. That is, the controller 30 performs control so that the voltage application to the first washer pump 34 and the second washer pump 35 is stopped and the drive of the wiper motor 32 is continued.

  In step 116, the controller 30 determines whether or not the rotation of the wiper arm 12 has completed one reciprocation. This determination is based on the detection result of a sensor or the like that detects the position of the rotary shaft provided in the wiper motor 32, and it is determined whether or not the second operation has been completed. After the wiping operation is continued without performing the process, the process proceeds to step 118. That is, the washer liquid sprayed onto the windshield glass WG can be wiped up by performing a single reciprocating wiping operation without spraying the washer liquid. In this embodiment, the wiping operation of the washer liquid is performed without spraying the washer liquid as the second operation. However, the wiping operation is performed while spraying the washer liquid toward the traveling direction side of the wiper blade 14. You may make it perform a wiping operation.

  In step 118, the controller 30 controls the wiper motor 32 so as to stop the wiping operation, and ends the series of visual field obstruction releasing operations.

  As described above, in this embodiment, while performing the wiping operation, the washer liquid is ejected at least in the direction opposite to the traveling direction of the wiper blade 14, so that the ejected washer liquid is not removed immediately and the visibility of the washer liquid is inhibited. It is possible to effectively contribute to things. As a result, it is possible to improve the removal performance of the visual field obstruction such as dirt.

  In the above-described embodiment, as the visibility obstruction release operation, as shown in FIGS. 6A to 6C, the ejection of the washer liquid is controlled according to the rotation of the wiper arm 12. The inhibitor release operation is not limited to this. For example, the first operation of the above embodiment may be omitted and the initial operation and the second operation may be performed. Or it is good also as a form which made the 1st operation | movement of said embodiment the operation | movement similar to an initial stage operation | movement. Alternatively, the wiping operation of the wiper blade 14 in the forward rotation direction injects the washer liquid toward the backward rotation direction, and the wiping operation of the wiper blade 14 in the backward rotation direction injects the washer liquid or the washer liquid to the backward rotation side. A single reciprocating wiping operation may be applied so as not to inject. Or you may control as shown to FIG. 8 (A)-(C). That is, in FIGS. 8A to 8C, the wiping operation in the forward rotation direction of the initial operation drives the first washer pump 34 and the second washer pump 35 to drive the wiper arm 12 in the forward rotation direction side and the backward rotation direction. Inject the washer fluid to both sides of the moving direction. In the initial operation, the wiping operation in the backward rotation direction performs the wiping operation while driving only the first washer pump 34 and injecting the washer liquid in the direction opposite to the traveling direction of the wiper blade 14. Thereafter, control is performed in the same manner as in the above embodiment.

  Further, in the above embodiment, the initial operation, the first operation, and the second operation are each one reciprocating wiping operation, but each is not limited to one reciprocating wiping operation, for example, a plurality of reciprocating wiping operations. It is good.

  In the above embodiment, the washer liquid is jetted in a direction crossing the rotational direction of the wiper arm 12, and the jet trajectory of the washer liquid is meandered by changing the jet pressure of the washer pump. This is not a limitation. For example, the injection angle of the nozzle for injecting the washer liquid can be changed by driving various actuators, etc., and the actuator is driven to change the injection angle of the washer nozzle in accordance with the rotation of the wiper arm 12. The locus may be meandered. Or you may apply the structure which injects a washer liquid by fixed injection pressure, as shown in FIG. 9, without meandering the injection locus | trajectory of a washer liquid.

  In addition, the above embodiment may further include a configuration capable of changing the wiping range by the wiper blade 14. For example, the configuration of the vehicle wiper device 11 shown in FIG. 10 may be applied. FIG. 10 is a diagram illustrating a configuration of the vehicle wiper device 11 in which the wiping range by the wiper blade 14 can be changed. In addition, about the same structure as said embodiment, the same code | symbol is attached | subjected and demonstrated. In FIG. 10, the first main nozzle 18, the second main nozzle 20, the first sub nozzle 21, and the second sub nozzle 22 are omitted. 10 shows the case of a right-hand drive vehicle, the right side of the vehicle (left side in FIG. 10) is the driver's seat side, and the left side of the vehicle (right side in FIG. 10) is the passenger seat side. When the vehicle is a left-hand drive vehicle, the left side of the vehicle (the right side in FIG. 10) is the driver seat side, and the right side of the vehicle (the left side in FIG. 10) is the passenger seat side. Further, when the vehicle is a left-hand drive vehicle, the configuration of the vehicle wiper device 11 is opposite to the left and right. Hereinafter, the configuration of the vehicle wiper device 11 capable of changing the wiping range will be briefly described.

  In the vehicle wiper device 11 of the example of FIG. 10, a pair of wiper arms 12, a wiper blade 14 coupled to the tip of the wiper arm 12, a first wiper motor 32 </ b> A, a second wiper motor 32 </ b> B as a changing unit, and a controller 30. And.

  The first wiper motor 32A reciprocates each of the pair of wiper arms 12 on the windshield glass WG by rotating the output shaft forward and backward within a range of a predetermined rotation angle. For example, when the first wiper motor 32A rotates in the forward direction, the wiper blade 14 connected to the tip of the wiper arm 12 operates so as to wipe the upper reverse position from the lower reverse position. Further, when the first wiper motor 32A rotates in the reverse direction, the wiper blade 14 connected to the tip of the wiper arm 12 operates so as to wipe from the upper reverse position to the lower reverse position.

  The second wiper motor 32B is a drive source that apparently expands and contracts the wiper arm 12 on the passenger seat side, and the wiping range can be changed to the wiping ranges Z1 and Z2 by driving the second wiper motor 32B.

  As a specific mechanism for changing the wiping range, for example, a substantially parallelogram-shaped link mechanism 52 is provided on the wiper arm 12 on the passenger seat side. In the link mechanism 52, a substantially parallelogram-shaped link mechanism 52 is constituted by the first drive lever 54, the second drive lever 56, the driven lever 58, and the arm head 12A.

  The first drive lever 54 rotates in the direction of arrow A in FIGS. 11A and 11B around the axis of the rotation shaft 54A provided on one end side in conjunction with the rotation of the first wiper motor 32A. The other end side of the first drive lever 54 is rotatably connected to one end side of the driven lever 58. The other end side of the driven lever 58 is rotatably connected to the vehicle lower end side of the arm head 12A.

  Further, the second drive lever 56 rotates in the direction of arrow B in FIGS. 11A and 11B around the axis of the rotation shaft 54A in conjunction with the rotation of the second wiper motor 32B. The negative end side of the second drive lever 56 is pivotally connected to the arm head 12A.

  That is, by the rotation of the first wiper motor 32A, the wiper arm 12 is reciprocally rotated by the link mechanism 52 around the connection portion between the second drive lever 56 and the arm head 12A. Then, by driving the second wiper motor 32B, the second drive lever 56 is rotated, and the rotation center of the reciprocating rotation of the wiper arm 12 (the connection portion between the second drive lever 56 and the arm head 12A) is moved to move the wiper arm. 12 apparently expands and contracts. For example, FIG. 11A shows a state where the rotation angle of the first drive lever 54 is an angle α and the rotation angle of the second drive lever 56 is an angle β, and FIG. 11B shows the first drive lever. A state in which the rotation angle 54 is an angle α and the rotation angle of the second drive lever 56 is an angle γ is shown. As shown by the dotted lines in FIGS. 11A and 11B, the wiper arm 12 can be apparently expanded and contracted by rotating the second drive lever 56. Accordingly, as shown in FIGS. 12A and 12B, the rotation angle of the second wiper motor 32B (the position of the second drive lever 56) according to the rotation angle of the first wiper motor 32A (the position of the first drive lever 54). ) Can be changed to the wiping ranges Z1 and Z2. The rotation of the first wiper motor 32A (first drive lever 54) and the rotation of the second wiper motor 32B (second drive lever 56) are separated, and the rotation of the first drive lever 54 and the second drive are separated. The rotation of the lever 56 does not affect each other. More specifically, one end of the first drive lever 54 is fixed to a rotating shaft (not shown) that is rotated by the rotation of the first wiper motor 32A, and the other end of the second drive lever 56 is fixed to the second wiper motor 32B. It is being fixed to the rotating shaft (not shown) rotated by this rotation. The rotating shafts are coaxial with each other and are configured such that the rotation of one rotating shaft does not affect the rotation of the other rotating shaft.

  In the above-described embodiment, a mode in which the washer liquid is ejected by the two washer pumps (the first washer pump 34 and the second washer pump 35) to the forward rotation direction side and the backward rotation direction side of the wiper arm 12 will be described. However, it is not limited to this. For example, the washer liquid may be jetted to each of the forward rotation direction side and the backward rotation direction side of the wiper arm 12 by a mechanism such as switching the path of the washer liquid using a single washer pump.

  In the above embodiment, the first main nozzle 18, the second main nozzle 20, the first sub nozzle 21, and the second sub nozzle 22 are provided in the wiper arm 12. However, the present invention is not limited to this. For example, any or all of the nozzles may be provided on the wiper blade 14 or may be provided on both the wiper arm 12 and the wiper blade 14.

  In the above-described embodiment, the wiper device configured to move the wiper blade 14 to the storage position below the vehicle from the lower reversal position is described as an example. However, the wiper having the same position of the storage position and the lower reversal position is described. An apparatus may be applied.

  In the above embodiment, the first main nozzle 18 and the second main nozzle 20 are each provided with three injection holes. However, the present invention is not limited to this. For example, two may be provided, or four or more may be provided.

  In the above embodiment, the first sub nozzle 21 and the second sub nozzle 22 are provided. However, the present invention is not limited to this, and the first sub nozzle 21 and the second sub nozzle 22 may be omitted.

  Although one embodiment has been described above, the present invention is not limited to the above, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10, 11 ... Vehicle wiper apparatus, 12 ... Wiper arm, 14 ... Wiper blade, 18 ... 1st main nozzle, 20 ... 2nd main nozzle, 21 1st sub nozzle, 22 ... Second sub nozzle, 30 ... controller, 32 ... wiper motor, 32A ... first wiper motor, 32B ... second wiper motor, 34 ... first washer pump, 35 ... second washer pump , 40 ... Visibility obstruction release mode switch, 42 ... Vehicle ECU, 50 ... Control device

Claims (7)

A wiper motor for wiping the wiping surface with a wiper blade connected to the tip of the wiper arm;
A washer pump for injecting washer liquid from the injection unit onto the wiping surface by pumping washer liquid to an injection unit provided on at least one of the wiper blade and the wiper arm;
A direction control unit that controls a direction in which the washer liquid is sprayed from the spray unit;
When a predetermined signal is detected, the first operation is performed to perform the wiping operation while injecting washer liquid in the direction opposite to the traveling direction side of the wiper blade during the wiping operation. A control unit for controlling the wiper motor, the washer pump, and the direction control unit;
Wiper apparatus for vehicles provided with.   The wiper motor, the controller, so as to execute, after the first operation, the wiping operation that does not spray the washer liquid or the second operation that performs the wiping operation while spraying the washer liquid toward the traveling direction side, The vehicle wiper device according to claim 1, which controls a washer pump and the direction control unit.   3. The vehicle wiper device according to claim 1, further comprising a meandering portion that meanders an ejection locus of the washer fluid when the washer fluid is ejected from the ejection portion. The spray unit can spray a washer liquid in each of a direction intersecting with the traveling direction of the wiper blade on the traveling direction side and a direction intersecting with the opposite direction of the traveling direction of the wiper blade on the opposite direction side,
4. The vehicle wiper device according to claim 3, wherein the meandering unit controls the washer pump so that an injection pressure of the washer liquid is changed when the washer liquid is injected from the injection unit. 5. The angle at which the spraying unit sprays the washer fluid on each of the traveling direction side and the opposite direction side can be changed.
When the meandering part injects the washer liquid from the injection part, the injection part is controlled to change the angle at which the washer liquid is injected on each of the traveling direction side and the opposite direction side of the injection part. The vehicle wiper device according to claim 3.   The said control part controls the said wiper motor, the said washer pump, and the said direction control part so that the said wiping operation | movement may be performed as a said 1st operation | movement, injecting a washer liquid also to the said advancing direction side. The vehicle wiper device according to claim 1. A change unit for changing a wiping range of the wiping surface by the wiper blade;
The vehicle wiper device according to any one of claims 1 to 6, wherein the control unit further controls the changing unit to perform the wiping operation while changing the wiping range.