JP2013203229A - Vehicle washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle washing device capable of preventing a wiper from involuntarily wiping a vehicle window in a dry condition while enabling the wiper to work in conjunction with the injection of washing liquid to the vehicle window without providing a tank and an electric pump for exclusive use.SOLUTION: A vehicle washing device includes: a solenoid changeover valve B provided in a branch portion of a branch pipe which branches from a main pipe connecting an electric pump 20 and a rear washer nozzle and connects the main pipe and a camera washer nozzle, for changing over a flow path for washing liquid into the side of the rear washer nozzle or the side of the camera washer nozzle; a wiper washer switch SW1 capable of interlocking operation to drive both the electric pump 20 and a wiper motor M1; and a washing control circuit part 31 for changing over the solenoid selector valve B into the side of the camera washer nozzle on the basis of the input of a reversing-state signal L showing that a vehicle is in a reversing state, and for prohibiting the drive of the wiper motor M1 with the interlocking operation.

Description

  The present invention relates to a vehicle cleaning device.

  In recent years, with the widespread use of car navigation, when a vehicle is moved backward, the situation behind the vehicle can be photographed with an in-vehicle camera placed at the rear of the vehicle, and the photographed image can be displayed on a car navigation monitor for confirmation. What is made is known. However, since this in-vehicle camera is arranged outside the vehicle, there is a problem in that if mud or the like adheres to the lens, the situation behind the vehicle cannot be sufficiently photographed and is difficult to confirm.

  In view of this, there has been proposed a vehicle cleaning apparatus provided with a nozzle that sprays cleaning liquid onto a lens of an in-vehicle camera to remove deposits, and a pump that sends the cleaning liquid to the nozzle (Patent Document 1). In such a vehicle cleaning device, the in-vehicle camera can be cleaned without the driver getting out of the vehicle.

Japanese Patent Application Laid-Open No. 11-255018

  However, the above-described vehicle cleaning apparatus has a dedicated cleaning liquid tank and pump for cleaning the lens of the in-vehicle camera, and these installation spaces are necessary or expensive. Therefore, the applicant of the present invention is provided with a vehicle washing apparatus including a window washing nozzle for injecting the fed washing liquid into the vehicle window, and an electric pump for feeding the window washing nozzle with a washing liquid from a tank. A switch valve device that can selectively switch the flow path of the cleaning liquid from the pump to the window cleaning nozzle side or the camera cleaning nozzle side is proposed. In this vehicle cleaning device, the vehicle-mounted camera can be cleaned by utilizing an existing electric pump or tank for window cleaning (without requiring the dedicated cleaning liquid tank and pump).

  By the way, as a vehicle equipped with the window cleaning nozzle, there is a vehicle that sprays cleaning liquid onto the vehicle window (window washer) and wipes the vehicle window in conjunction with a wiper motor (wiper) simply by operating a washer switch. . For this reason, when the cleaning liquid is sprayed onto the imaging surface of the in-vehicle camera, if the same operation of the switch (one switch operation [interlocking operation] for interlocking the window washer and the wiper) is performed, the cleaning liquid is applied to the vehicle window. In spite of the fact that the wiper motor is not jetted, the wiper motor unintentionally interlocks and wipes the dry vehicle window. Note that this causes, for example, early deterioration of the wiper blade. In addition, a configuration in which another independent switch operation is performed when the cleaning liquid is sprayed onto the imaging surface of the in-vehicle camera is conceivable, but in this case, the switch and its operation become complicated and a dedicated wiring is required, which is expensive. Become.

  The present invention has been made to solve the above problems, and its purpose is to enable a wiper to be linked to the injection of cleaning liquid into a vehicle window without providing a dedicated tank and an electric pump. However, an object of the present invention is to provide a vehicle washing apparatus that can prevent a wiper from wiping off a dry vehicle window unintentionally.

  According to the first aspect of the present invention, there is provided a camera cleaning nozzle for injecting the supplied cleaning liquid onto an imaging surface of an in-vehicle camera disposed outside the vehicle, and a window for injecting the supplied cleaning liquid into the vehicle window. A cleaning nozzle, an electric pump for feeding cleaning liquid stored in a tank, and a main pipe connecting between the electric pump and the window cleaning nozzle are branched from the main pipe and the camera cleaning nozzle. A branch pipe to be connected, and a branch portion of the main pipe and the branch pipe, and the flow path of the cleaning liquid from the electric pump can be selectively switched to the window cleaning nozzle side or the camera cleaning nozzle side. A switching valve device, a wiper motor for driving a wiper for wiping the vehicle window, and an interlocking operation for driving both the electric pump and the wiper motor are possible. In a state where the Ipa washer switch and the reverse state signal indicating that the vehicle is in the reverse state are not input, the switching valve device is held on the window cleaning nozzle side and the wiper motor is allowed to be driven by the interlocking operation. And a cleaning control circuit unit that switches the switching valve device from the window cleaning nozzle side to the camera cleaning nozzle side based on an input of a reverse drive state signal and prohibits driving of the wiper motor by the interlocking operation. To do.

  According to this configuration, since the switching valve device capable of selectively switching the flow path of the cleaning liquid from the electric pump to the window cleaning nozzle side or the camera cleaning nozzle side is provided, the existing electric pump or tank for window cleaning is installed. It can be used to clean the in-vehicle camera. As a result, for example, the installation space can be reduced and the cost can be reduced.

  In addition, when the reverse state signal indicating that the vehicle is in the reverse state is not input, the switching valve device is held on the wind cleaning nozzle side, and the wiper washer switch interlocking operation for driving both the electric pump and the wiper motor is performed. Driving of the wiper motor by is allowed. Therefore, both the electric pump and the wiper motor can be driven by the interlocking operation of the wiper washer switch, and the vehicle window can be wiped by injecting the cleaning liquid to the vehicle window and interlocking the wiper.

  Further, the switching valve device is switched from the window cleaning nozzle side to the camera cleaning nozzle side based on the input of the reverse drive state signal, and the wiper motor drive by the interlocking operation is prohibited. Thus, for example, when the interlock operation of the wiper washer switch is performed in a state where the reverse drive state signal is input, the electric pump is driven while the switching valve device is switched to the camera cleaning nozzle side, but the wiper motor is driven. do not do. As a result, cleaning liquid can be sprayed onto the imaging surface of the in-vehicle camera to clean the imaging surface of the in-vehicle camera, and the wiper motor is not driven. For example, the wiper prevents the wiper from wiping the dry vehicle window. Is done.

  According to a second aspect of the present invention, in the vehicular cleaning apparatus according to the first aspect, an image captured by the in-vehicle camera is displayed on a display provided on the vehicle in the reverse state, and a touch panel switch for cleaning the camera is provided. The gist of the invention is that it has a touch panel control section that displays and drives the electric pump based on the operation of the touch panel switch for cleaning the camera.

  According to this configuration, when the vehicle moves backward, an image captured by the in-vehicle camera is displayed on a display provided in the vehicle and a touch panel switch for camera cleaning is displayed. For example, when the driver looks at the display and confirms that the imaging surface is dirty, the driver can clean the imaging surface of the in-vehicle camera simply by operating (touching) the touch panel switch. Therefore, in such a case, for example, it is not necessary to perform a complicated lever operation in which a cleaning system switch such as the wiper washer switch capable of the interlocking operation is integrated, thereby avoiding erroneous operation and confusion during operation. It is possible to clean the imaging surface of the in-vehicle camera accurately and quickly.

  According to a third aspect of the present invention, in the vehicular cleaning apparatus according to the first or second aspect, the reverse state signal indicating that the vehicle is in the reverse state is a signal indicating each of the shift levers constituting the transmission of the vehicle. The gist is that it is an electrical signal of the reverse position among the positions.

  According to this configuration, when the driver operates the shift lever to the reverse position (reverse position) to reverse the vehicle on his own intention, the flow path of the cleaning liquid from the electric pump is switched to the camera cleaning nozzle side, and the driver By operating the wiper washer switch or the like with his own intention, the imaging surface of the in-vehicle camera can be immediately cleaned.

  According to a fourth aspect of the present invention, in the vehicular cleaning apparatus according to the third aspect, the reverse state signal is provided at the rear portion of the vehicle and is turned on when the shift lever is in the reverse position. The cleaning control circuit unit is arranged at the rear of the vehicle, and a part of the power supply to the back lamp is input as the reverse state signal.

  According to this configuration, the back lamp disposed in the rear part of the vehicle is turned on when the shift lever is set to the reverse position, and a part of the power supply is used as a reverse state signal, thereby shifting. The signal line from the lever to the cleaning control circuit at the rear of the vehicle can be significantly shortened (compared to the case where each is provided in parallel).

  According to the present invention, the wiper wipes the vehicle window in a dry state unintentionally while allowing the wiper to be interlocked with the spray of the cleaning liquid onto the vehicle window without providing a dedicated tank and an electric pump. It is possible to provide a vehicular cleaning device that can prevent the occurrence of such a situation.

The schematic block diagram of the vehicle provided with the washing | cleaning apparatus for vehicles of this embodiment. The electric circuit diagram for demonstrating the electrical structure of the washing | cleaning apparatus for vehicles of this embodiment.

Hereinafter, an embodiment of a vehicle cleaning device of the present invention will be described with reference to FIGS. 1 and 2.
As shown in FIG. 1, the vehicle 1 is provided with a shift lever 3 of a transmission 2 next to the driver's seat, and the vehicle 1 shifts by operating the shift lever 3. When the shift lever 3 is operated to the first speed position, the transmission 2 shifts the speed ratio of the vehicle 1 to the first speed. When the shift lever 3 is operated to the second speed position, the transmission 2 shifts the gear ratio of the vehicle 1 to the second speed. When the shift lever 3 is operated to the neutral position, the transmission 2 shifts the speed ratio of the vehicle 1 to neutral.

  Further, when the shift lever 3 is operated to the reverse position (reverse position), the transmission 2 causes the vehicle 1 to move backward (reverse drive is possible). At this time, the back lamp BL provided at the rear portion of the vehicle 1 is lit while the shift lever 3 is being shifted to the reverse position (reverse position).

The console panel of the vehicle 1 is provided with a display DSP that is used for displaying the current position and other maps in the navigation device.
A rear wiper device 6 is provided at the rear center position of the vehicle 1 and below the rear window 4 as a vehicle window. The rear wiper device 6 rotates when the wiper motor M <b> 1 is driven, and the wiper 7 of the rear wiper device 6 wipes the outer surface of the rear window 4.

  A rear washer nozzle N1 as a wind cleaning nozzle is provided at the rear center position of the vehicle 1 and above the rear window 4. The rear washer nozzle N1 has its nozzle port directed to the lower rear window 4 and sprays the fed cleaning liquid onto the wiping surface of the rear window 4 from the nozzle port.

  The rear washer nozzle N <b> 1 is connected to a washer pump P provided in the front engine room of the vehicle 1 via a main pipe 8. The washer pump P constitutes the electric pump 20 together with the pump motor M2, and is a pump for feeding the cleaning liquid stored in a tank T provided in the engine room to the rear washer nozzle N1 via the main pipe 8. When the wiper washer switch SW1 provided in the driver's seat is operated, the washer pump P is driven by the rotational drive of the pump motor M2 to supply the cleaning liquid from the tank T to the rear washer nozzle N1 via the main pipe 8. It is supposed to send.

  A back monitor vehicle-mounted camera 10 is installed outside the rear portion of the vehicle 1 and further in the rear position than the rear wiper device 6 in the present embodiment. In the present embodiment, the in-vehicle camera 10 is a rear-view camera for rearward viewing, and an image captured by the in-vehicle camera 10 is output as image data to a display DSP provided on the console panel of the vehicle 1. The display DSP displays an image captured by the in-vehicle camera 10 on the screen based on the image data.

  When the shift lever 3 of the transmission 2 is operated to the reverse position (reverse position), the in-vehicle camera 10 starts an imaging operation and outputs the image data to the display DSP. In addition, when the shift lever 3 is shifted from the reverse position (reverse position) to any other position, the vehicle-mounted camera 10 ends the imaging operation.

  A camera washer nozzle N2 as a camera cleaning nozzle is provided at a position adjacent to the in-vehicle camera 10 and deviating from the rear imaging viewing angle of the in-vehicle camera 10. The camera washer nozzle N2 has its nozzle port directed to the glass window 10a (see FIG. 2) provided to protect the lens of the in-vehicle camera 10 from mud, dust, dust, etc. From the nozzle opening, it injects to the glass window 10a of the vehicle-mounted camera 10.

  The camera washer nozzle N2 is connected to a branch pipe 8a branched from the main pipe 8 that connects the washer pump P and the rear washer nozzle N1. The branch pipe 8 a is connected to the main pipe 8 at the rear part of the vehicle 1, and the pipe up to the connection position (branch part) at the rear part is used in common with the main pipe 8. An electromagnetic switching valve B as a switching valve device is provided at a branch portion where the branch pipe 8a branches from the main pipe 8. The electromagnetic switching valve B is a valve that can selectively switch the flow path of the cleaning liquid supplied from the washer pump P to either the camera / washer nozzle N2 side or the rear washer nozzle N1 side.

  The electromagnetic switching valve B is driven based on the operation of the shift lever 3 of the transmission 2 to the reverse position (reverse position), and connects the branch pipe 8 a and the main pipe 8. That is, the electromagnetic switching valve B cuts off the connection between the rear washer nozzle N1 and the washer pump P and connects the camera washer nozzle N2 and the washer pump P. Accordingly, the camera / washer nozzle N2 is in a state where the washing liquid from the tank T can be fed by the washer pump P. When the washer pump P is driven and the cleaning liquid from the tank T is supplied to the camera / washer nozzle N2 via the main pipe 8 and the branch pipe 8a, the cleaning liquid is supplied from the nozzle port of the camera / washer nozzle N2. 10 glass windows 10a are jetted.

  On the other hand, the electromagnetic switching valve B is not driven when the shift lever 3 of the transmission 2 is operated to a position other than the reverse position (reverse position). When the electromagnetic switching valve B is in a non-driven state, the connection between the branch pipe 8a and the main pipe 8 is cut off. That is, the electromagnetic switching valve B connects the rear washer nozzle N1 and the washer pump P via the main pipe 8. Therefore, at the normal time, the rear washer nozzle N1 is in a state in which the cleaning liquid from the tank T can be fed by the washer pump P.

  When the wiper washer switch SW1 provided in the driver's seat is operated from this state, the washer pump P is driven and the cleaning liquid from the tank T is fed to the rear washer nozzle N1 via the main pipe 8. The cleaning liquid is sprayed to the rear window 4 from the nozzle port of the rear washer nozzle N1.

Next, the electrical configuration of the vehicle cleaning apparatus configured as described above will be described with reference to FIG.
In FIG. 2, the back lamp BL provided at the rear part of the vehicle 1 is connected in series with the back lamp relay 11 provided at one end to the ground and the other end via the lamp harness L <b> 1 in the engine room at the front part of the vehicle 1. It is connected.

(Back lamp relay 11)
The back lamp relay 11 is a reed relay having a reed switch 11a and an exciting coil 11b. The reed switch 11a has a plus terminal connected to the plus power supply line L0 via the fuse F1, and a minus terminal connected to the back lamp BL via the lamp harness L1. The positive power line L0 is connected to the high potential side terminal of the battery BA whose ground is connected to the low potential side terminal via an ignition switch IG and a fuse F2. The reed switch 11a is turned on when the exciting coil 11b is energized and excited, supplies current to the back lamp BL, and turns on the back lamp BL. The lamp harness L1 is connected to a cleaning control circuit 31 (described later) provided at the rear of the vehicle 1 (at the rear of the vehicle 1). At the same time, a signal indicating that the vehicle 1 is in the reverse drive state (reverse drive state signal L) is input.

  One end of the exciting coil 11b of the back lamp relay 11 is connected to the plus terminal side of the reed switch 11a, and the other end is connected to the vehicle ECU 12 as a touch panel control unit described later.

(Pump motor M2)
The pump motor M2 constituting a part of the electric pump 20 has a first terminal connected to the positive power line L0 and a second terminal connected to the pump relay 13, the cleaning control circuit unit 31, and the wiper washer switch SW1. ing.

(Pump relay 13)
The pump relay 13 is a reed relay having a reed switch 13a and an exciting coil 13b. Reed switch 13a has its plus terminal connected to the second terminal of pump motor M2, and its minus terminal grounded. The reed switch 13a is turned on when the exciting coil 13b is energized and excited, supplies current to the pump motor M2, and drives the pump motor M2 (electric pump 20). The exciting coil 13b of the pump relay 13 has one end connected to the positive power supply line L0 and the other end connected to the vehicle ECU 12.

(Vehicle ECU 12)
The vehicle ECU 12 performs various processes. When the shift lever reverse signal RV indicating that the shift lever 3 of the transmission 2 is operated to the reverse position (reverse position) is input, the excitation coil 11b. The other end of the coil is grounded to energize the exciting coil 11b. That is, the reed switch 11a is turned on, a current is passed through the back lamp BL via the lamp harness L1 to turn on the back lamp BL, and the signal (H) indicating that the vehicle 1 is in the reverse drive state to the cleaning control circuit unit 31. The reverse state signal L) of the level is output.

  Further, when the shift lever reverse signal RV is input, the vehicle ECU 12 displays an image captured by the in-vehicle camera 10 on the display DSP and also displays a touch panel switch TSW for camera cleaning.

  Further, when the touch panel switch TSW for camera cleaning is operated (touched), the vehicle ECU 12 grounds the other end of the excitation coil 13b and energizes the excitation coil 13b. That is, the reed switch 13a is turned on, the second terminal of the pump motor M2 is grounded, and the pump motor M2 (electric pump 20) is driven.

  On the other hand, when the shift lever 3 is in a position other than the reverse position (reverse position) and the shift lever reverse signal RV is not input, the vehicle ECU 12 turns off the reed switch 11a without energizing the exciting coil 11b, and the back lamp BL is extinguished and the reverse drive state signal L is not output to the cleaning control circuit unit 31.

  Further, when the shift lever reverse signal RV is not input, the vehicle ECU 12 does not display an image captured by the in-vehicle camera 10 on the display DSP (for example, displays a map or the like), and does not display the touch panel switch TSW for washing the camera. Is not displayed.

(Wiper washer switch SW1)
The wiper washer switch SW1 is a switch for driving the wiper motor M1 and the pump motor M2 (electric pump 20). The driver performs "OFF", "WASH1 (WA1 in FIG. 2)", "INT", " It can be operated at any position of “ON” and “WASH2 (WA2 in FIG. 2)”. The wiper washer switch SW1 is configured such that when it is operated to the “OFF”, “INT”, and “ON” positions, the state is maintained even if the driver releases the hand. The wiper washer switch SW1 can be operated to the “WASH1” position only while the driver is applying force, and is set to “OFF” when the driver releases the hand. The wiper washer switch SW1 can be operated to the “WASH2” position only while the driver is applying force, and is configured to be “ON” when the driver releases the hand.

  The wiper washer switch SW1 has an LS terminal, a C1 terminal, an E terminal, and a W terminal. And the 2nd terminal (The pump relay 13 and the said washing | cleaning control circuit part 31) of the said pump motor M2 is connected to the W terminal. The E terminal is grounded. Further, the LS terminal and the C1 terminal of the wiper washer switch SW1 are respectively connected to an LS terminal and a C1 terminal of a wiper motor ASSY 41 (its relay assembly 42) which will be described later.

  The wiper washer switch SW1 does not connect the terminals to each other when the wiper washer switch SW1 is operated to “OFF”. Further, the wiper washer switch SW1 connects the E terminal and the W terminal in a state in which the wiper washer switch SW1 is operated to “WASH1” (linked operation). Further, the wiper washer switch SW1 connects the C1 terminal and the E terminal when operated to “INT”. Further, the wiper washer switch SW1 connects the LS terminal and the E terminal in a state of being operated to “ON”. Further, the wiper washer switch SW1 connects the LS terminal, the E terminal, and the W terminal in a state where it is operated to “WASH2”.

(Cleaning control circuit unit 31)
As described above, the cleaning control circuit unit 31 is connected to the lamp harness L1 and receives the reverse drive state signal L that becomes H level when the vehicle 1 is in the reverse drive state. Further, as described above, the cleaning control circuit unit 31 is connected to the second terminal of the pump motor M2 (the W terminal of the pump relay 13 and the wiper washer switch SW1), and when the pump motor M2 is in the driving state, The pump driving state signal W1 is input.

  The cleaning control circuit 31 is connected to the W terminal of the wiper motor ASSY 41 (its relay assembly 42), and the reverse drive state signal L is not input (the reverse drive state signal L is L level) and the pump drive state signal W1 is input. Only when the pump drive state signal W1 is at the L level, the wiper interlock signal W2 at the L level is output to the W terminal. In other words, the cleaning control circuit unit 31 outputs the wiper interlock signal W2 of L level to the W terminal when the pump drive state signal W1 of L level is inputted in the state where the reverse state signal L of H level is not inputted. If the L level pump drive state signal W1 is not input, the L level wiper interlock signal W2 is not output (the wiper interlock signal W2 is set to the H level). Further, the cleaning control circuit unit 31 does not output the wiper interlocking signal W2 at the L level regardless of the input of the pump driving state signal W1 at the L level when the reverse state signal L at the H level is input (the wiper). The interlocking signal W2 is set to H level).

  The cleaning control circuit unit 31 is connected to a base terminal of an NPN transistor Tr1, which will be described later. When the reverse drive state signal L is input (the reverse drive state signal L is H level), the pump drive state signal W1 is input. Regardless of non-input (L level, H level), the valve drive signal V of H level is output to the base terminal of the transistor Tr1.

(Electromagnetic switching valve B)
The electromagnetic switching valve B includes a switching valve Ba and an excitation coil Bb. When the excitation coil Bb is not energized (in the initial state), the switching valve Ba is not driven, and the electric pump 20 (washer pump). P) and the rear washer nozzle N1 are kept connected via the main pipe 8. Further, when the exciting coil Bb is energized, the electromagnetic switching valve B drives the switching valve Ba to connect the electric pump 20 (washer pump P) and the camera / washer nozzle N2 via the branch pipe 8a. The state is maintained only while the exciting coil Bb is energized.

  The exciting coil Bb of the electromagnetic switching valve B has one end connected to the positive power supply line L0 and the other end grounded through the transistor Tr1. Therefore, when the H level valve drive signal V from the cleaning control circuit unit 31 is input to the base terminal of the transistor Tr1, the excitation coil Bb is energized, and the electric pump 20 (washer pump P) and the camera / washer nozzle N2 are energized. And are connected.

(Wiper motor ASSY41)
The wiper motor ASSY 41 is a unit in which the wiper motor main body 43 and the relay assembly 42 are combined together.

(Wiper motor main body 43 (wiper motor M1 and cam switch 44))
The wiper motor main body 43 is stopped by moving the wiper 7 to the home position and the wiper motor M1 and the automatic fixed position stop device (for example, even when the wiper washer switch SW1 is turned “OFF” when the wiper 7 is in a position other than the home position). And a cam switch 44 constituting the device.

  The wiper motor M1 has a first terminal connected to the +1 terminal of the wiper motor main body 43, a second terminal connected to the E terminal of the wiper motor main body 43 via the circuit breaker CB, and the E terminal is grounded.

  The cam switch 44 has an a contact, a b contact, a c contact (common contact), and a movable contact 44 a, and the a contact is connected to the positive power supply line L 0 via the + B terminal of the wiper motor main body 43. Further, the b contact is grounded via the E terminal of the wiper motor main body 43 and the like. The c contact (common contact) is connected to the S terminal of the wiper motor main body 43. The movable contact 44a is moved together with the driving of the wiper motor M1, thereby connecting the c contact (common contact) to either the a contact or the b contact.

  More specifically, when the wiper 7 is in a position other than the home position, the movable contact 44a connects the c contact to the a contact (that is, the positive power line L0). When the wiper 7 is positioned at the home position, the movable contact 44a connects the c contact to the b contact (that is, the ground).

(Relay assembly 42)
The relay assembly 42 includes a wiper drive relay 45 and a control IC 46, and is for driving the wiper motor M1 by a signal input from the outside.

(Wiper drive relay 45)
The wiper drive relay 45 is a relay having an a contact, a b contact, a c contact (common contact), a movable contact 45a, and an exciting coil 45b. The contact a is connected to the S terminal of the wiper motor main body 43. The b contact is connected to the positive power supply line L0 via the + B terminal which is an external terminal of the wiper motor ASSY 41 (relay assembly 42). The c contact (common contact) is connected to the + B terminal of the wiper motor main body 43. The movable contact 45a is turned on when the exciting coil 45b is energized and excited to connect the c contact to the b contact (that is, the positive power supply line L0). The movable contact 45a is turned off when the exciting coil 45b is de-energized, and the c contact is connected to the a contact (that is, the S terminal of the wiper motor main body 43).

  That is, when the wiper drive relay 45 is turned on, the positive power line L0 is connected to the first terminal of the wiper motor M1 to drive the wiper motor M1, and when it is turned off, the cam switch 44 is connected to the first terminal of the wiper motor M1 to automatically Perform a fixed position (home position) stop operation.

  One end of the exciting coil 45b of the wiper drive relay 45 is connected to the cathode of the diode 47 whose anode is connected to the positive power supply line L0, and the other end is the 7th pin of the control IC 46 (in FIG. No. 1 to No. 10 of No. 1 to No. 10 attached to the periphery of No. 1).

(Control IC 46)
The control IC 46 is a logic IC, and its 8th to 10th pins are connected to the W terminal, the C1 terminal, and the LS terminal of the wiper motor ASSY 41 (its relay assembly 42) through resistors R1 to R3, respectively. ing. The W terminal, C1 terminal, and LS terminal are connected to the cathode of the diode 47 through resistors R4 to R6. The control IC 46 has its fifth pin connected to the cathode of the diode 47 via the resistor R7, and is connected to the capacitors Ca and Cb connected in parallel and the external terminal of the wiper motor ASSY 41 (relay assembly 42). It is grounded through the terminal. Note that unused pins (pins 1 to 4 and 6) of the control IC 46 are grounded via a GND terminal which is an external terminal of the wiper motor ASSY 41 (relay assembly 42).

  When the L level wiper drive signal K1 is input from the wiper washer switch SW1 to the 10th pin, the control IC 46 connects the other end of the excitation coil 45b of the wiper drive relay 45 only during the input. The excitation coil 45b is energized by grounding, and the wiper drive relay 45 is turned on (the movable contact 45a is connected to the b terminal).

  Further, the control IC 46 receives the other end of the exciting coil 45b of the wiper drive relay 45 only when an L level wiper intermittent drive signal K2 is inputted to the 9th pin from the wiper washer switch SW1. Is grounded at regular intervals (for example, 3 seconds). That is, energization / non-energization of the exciting coil 45b is repeated at regular intervals (for example, 3 seconds), and the wiper drive relay 45 is turned on at regular intervals (for example, 3 seconds) (movable contact 45a is connected to the b terminal). Let

  Further, the control IC 46 receives the other end of the exciting coil 45b of the wiper drive relay 45 only when an L level wiper interlock signal W2 is input from the cleaning control circuit 31 to the eighth pin. Is grounded to energize the exciting coil 45b, and the wiper drive relay 45 is turned on (the movable contact 45a is connected to the b terminal).

Next, the operation of the embodiment (vehicle cleaning apparatus) configured as described above will be described.
(When the shift lever 3 is in a position other than the reverse position (reverse position))
Now, for example, when the shift lever 3 is in a position other than the reverse position (reverse position), the back lamp BL is turned off, and the reverse control state signal L is not input to the cleaning control circuit unit 31 (reverse state). Signal L is at L level). In this state, the cleaning control circuit unit 31 outputs the input pump drive state signal W1 as it is as the wiper interlock signal W2 (L level when L level, H level when H level). In this state, the cleaning control circuit unit 31 does not output the H-level valve drive signal V to the base terminal of the transistor Tr1, and the connection state between the electric pump 20 (washer pump P) and the rear washer nozzle N1 is determined. Retained.

  For example, when the wiper washer switch SW1 is operated to “WASH1” (linked operation), the W terminal of the wiper washer switch SW1 is connected to the E terminal (ground), and the pump motor M2 (electric pump 20) is driven. The As a result, the cleaning liquid is sprayed from the rear washer nozzle N1 to the rear window 4.

  Further, while the wiper washer switch SW1 is operated to “WASH1” (linked operation), the cleaning control circuit unit 31 receives the L level pump drive state signal W1, and the cleaning control circuit unit 31 receives the L level wiper. The interlock signal W2 is output to the control IC 46, and the control IC 46 turns on the wiper drive relay 45 (connects the movable contact 45a to the b terminal). Thus, while the wiper washer switch SW1 is operated to “WASH1” (linked operation) (more specifically, until the linked operation is completed and the automatic fixed position (home position) stopping operation by the cam switch 44 is completed). The wiper motor M1 is driven, and the wiper 7 wipes the rear window 4.

  For example, when the wiper washer switch SW1 is operated to “INT”, the C1 terminal of the wiper washer switch SW1 is connected to the E terminal (ground), and the L level wiper intermittent drive signal K2 is input to the control IC 46. Then, the control IC 46 turns on the wiper drive relay 45 (the movable contact 45a is connected to the b terminal) at regular intervals (for example, 3 seconds). As a result, the wiper motor M1 is driven (intermittently driven) at regular intervals (for example, 3 seconds), and the wiper 7 wipes the rear window 4.

  Further, for example, when the wiper washer switch SW1 is turned on, the LS terminal of the wiper washer switch SW1 is connected to the E terminal (ground), and the L-level wiper drive signal K1 is input to the control IC 46. The control IC 46 turns on the wiper drive relay 45 (connects the movable contact 45a to the b terminal). As a result, the wiper motor M1 is driven (continuously driven), and the wiper 7 wipes the rear window 4.

  For example, when the wiper washer switch SW1 is operated from “ON” to “WASH2”, the W terminal is connected to the E terminal (ground) in addition to the LS terminal of the wiper washer switch SW1, and the wiper motor M1 is driven (continuous drive). ), The pump motor M2 (electric pump 20) is driven. Thus, the wiper 7 wipes the rear window 4 and the cleaning liquid is sprayed from the rear washer nozzle N1 to the rear window 4.

(When the shift lever 3 is in the reverse position (reverse position))
Now, for example, when the shift lever 3 is in the reverse position (reverse position), the back lamp BL is turned on, and the reverse control state signal L is input to the cleaning control circuit unit 31. In this state, the cleaning control circuit unit 31 does not output the L level wiper interlock signal W2 (the wiper interlock signal W2 is set to H level) regardless of the input of the L level pump drive state signal W1. In this state, the cleaning control circuit unit 31 outputs the H level valve drive signal V to the base terminal of the transistor Tr1, and the electric pump 20 (washer pump P) and the camera / washer nozzle N2 are connected. The

  For example, when the wiper washer switch SW1 is operated to “WASH1” (linked operation), the W terminal of the wiper washer switch SW1 is connected to the E terminal (ground), and the pump motor M2 (electric pump 20) is driven. The As a result, the cleaning liquid is sprayed from the camera washer nozzle N2 to the glass window 10a of the in-vehicle camera 10.

  Further, even when the wiper washer switch SW1 is operated to “WASH1” (linked operation) and the L level pump drive state signal W1 is input to the cleaning control circuit unit 31, the cleaning control circuit unit 31 does not have the L level wiper interlock signal. Since W2 is not output to the control IC 46, the control IC 46 keeps the wiper drive relay 45 off (the movable contact 45a is connected to the terminal a). This prevents the wiper 7 from wiping the dry rear window 4, for example.

  Further, for example, when the wiper washer switch SW1 is operated to “INT”, the wiper motor M1 is moved at regular intervals (for example, 3 seconds) in the same manner as when the shift lever 3 is in a position other than the reverse position (reverse position). And the rear window 4 is wiped off by the wiper 7.

  For example, when the wiper washer switch SW1 is operated to “ON”, the wiper motor M1 is driven (continuously driven) and the wiper 7 is driven in the same manner as when the shift lever 3 is in a position other than the reverse position (reverse position). The rear window 4 is wiped off.

  For example, when the wiper washer switch SW1 is operated from “ON” to “WASH2”, the W terminal is connected to the E terminal (ground) in addition to the LS terminal of the wiper washer switch SW1, and the wiper motor M1 is driven (continuous drive). ), The pump motor M2 (electric pump 20) is driven. As a result, the wiper 7 wipes the rear window 4 and the cleaning liquid is sprayed from the camera washer nozzle N2 to the glass window 10a of the in-vehicle camera 10.

Next, the characteristic effects of the above embodiment will be described below.
(1) Since there is an electromagnetic switching valve B that can selectively switch the flow path of the cleaning liquid from the electric pump 20 (washer pump P) to the rear washer nozzle N1 side or the camera washer nozzle N2 side, The in-vehicle camera 10 (glass window 10a) can be cleaned using the existing electric pump 20 and tank T. As a result, for example, the installation space can be reduced and the cost can be reduced.

  Further, when the reverse drive state signal L indicating that the vehicle 1 is in the reverse drive state is not input to the cleaning control circuit unit 31, the electromagnetic switching valve B is held on the rear washer nozzle N1 side. Further, the wiper motor M1 is allowed to be driven by the interlocking operation (operation to “WA1”) of the wiper washer switch SW1 for driving both the electric pump 20 (pump motor M2) and the wiper motor M1. Therefore, both the electric pump 20 (pump motor M2) and the wiper motor M1 can be driven by the interlock operation of the wiper washer switch SW1 (operation to “WA1”), and the cleaning liquid is sprayed to the rear window 4 and the wiper 7 is turned on. The rear window 4 can be wiped off in conjunction with each other.

  The electromagnetic switching valve B is switched from the rear and washer nozzle N1 side to the camera and washer nozzle N2 side based on the input of the reverse state signal to the cleaning control circuit unit 31, and the interlocking operation ("WA1" The operation of the wiper motor M1 by operation) is prohibited. Therefore, for example, when the interlock operation (operation to “WA1”) of the wiper washer switch SW1 is performed in a state where the reverse control state signal L is input to the cleaning control circuit unit 31, the electromagnetic switching valve B is moved to the camera. The electric pump 20 (pump motor M2) is driven while being switched to the washer nozzle N2 side, but the wiper motor M1 is not driven. As a result, the cleaning liquid can be sprayed onto the glass window 10a of the in-vehicle camera 10 to clean the glass window 10a of the in-vehicle camera 10, and the wiper motor M1 is not driven. Wiping away is prevented.

  (2) When the vehicle 1 is in the reverse drive state, an image captured by the in-vehicle camera 10 is displayed on the display DSP and a touch panel switch TSW for camera cleaning is displayed. For example, when the driver looks at the display DSP and confirms that the glass window 10a is dirty, the driver only cleans the glass window 10a of the in-vehicle camera 10 by operating (touching) the touch panel switch TSW. It can be performed. Therefore, in such a case, for example, it is not necessary to perform a complicated lever operation in which cleaning switches such as the wiper washer switch SW1 capable of the interlock operation (operation to “WA1”) are integrated, Misoperation and confusion during operation can be avoided, and the glass window 10a of the in-vehicle camera 10 can be cleaned accurately and quickly.

  (3) When the driver operates the shift lever 3 to the reverse position to reverse the vehicle 1 with his own intention, the flow path of the cleaning liquid from the electric pump 20 is switched to the camera / washer nozzle N2 side, and the driver himself By operating the wiper washer switch SW1 and the like with the intention, the glass window 10a of the in-vehicle camera 10 can be immediately cleaned.

  (4) Utilizing the fact that the back lamp BL disposed at the rear part of the vehicle 1 is turned on when the shift lever 3 is moved to the reverse position, a part of the power supply (current) is set to the reverse state signal L. Thus, the signal line from the shift lever 3 to the cleaning control circuit unit 31 at the rear of the vehicle 1 can be significantly shortened (compared to the case where each is provided in parallel).

  (5) The cleaning control circuit unit 31 operates the wiper motor M1 when the operation (wiper driving operation) to “INT”, “ON”, and “WASH2” is performed even when the reverse state signal L of the H level is input. It is provided to allow driving. That is, the cleaning control circuit unit 31 is not provided to completely inhibit the driving of the wiper motor M1 regardless of the other operations of the wiper washer switch SW1 when the reverse state signal L of the H level is input. . Accordingly, even when the reverse drive state signal L is input at the H level, when the wiper driving operation is performed, the wiper motor M1 is allowed to be driven, and the wiper motor M1 can be driven normally. Therefore, for example, when the driver performs a wiper driving operation (operation to “INT”, “ON”, and “WASH2”) at his / her own intention, such as when it is raining in the reverse drive state, the wiper 7 is driven as usual and the rear is driven. The window 4 can be wiped off.

The above embodiment may be modified as follows.
In the above embodiment, when the vehicle is in the reverse drive state, an image captured by the in-vehicle camera 10 is displayed on the display DSP, and the touch panel switch TSW for camera cleaning is displayed, and the touch panel switch TSW for camera cleaning is operated. Although it was set as the structure which can drive the pump 20, it is not limited to this, You may delete this structure.
In the above embodiment, the wiring is configured so as to supply a part of the current supplied to the back lamp BL (as the reverse state signal L) to the cleaning control circuit unit 31. However, the wiring is not limited to this wiring. The wiring configuration may be changed. For example, when a warning buzzer for notifying the reverse state is provided at the rear part of the vehicle 1, when the shift lever 3 is operated to the reverse position, the alarm buzzer sounds and the current supplied to the warning buzzer May be supplied to the cleaning control circuit unit 31 (as the reverse state signal L). Of course, when the shift lever 3 is operated to the reverse position, an independent current different from the current supplied to the back lamp BL and the alarm buzzer (as the reverse state signal L) is supplied to the cleaning control circuit unit 31. You may do it.

  In the above embodiment, the reverse state signal L indicating that the vehicle 1 is in the reverse state is a signal that is output based on the position of the shift lever 3 that constitutes the transmission 2, but is not limited thereto. For example, it may be a signal output based on the fact that the vehicle 1 is actually moving backward (the tire is rotating in reverse).

The technical idea that can be grasped from the above embodiment and other examples will be described below together with the effects thereof.
(A) In the vehicle washing apparatus according to any one of claims 1 to 4, the wiper washer switch drives the wiper motor in addition to an interlocking operation for driving both the electric pump and the wiper motor. And a cleaning control circuit unit that allows driving of the wiper motor when the wiper driving operation is performed even when the reverse drive state signal is input. apparatus.

  According to this configuration, even when the reverse drive state signal is input, when the wiper driving operation is performed, the wiper motor is allowed to be driven, and the wiper motor can be driven normally. Therefore, for example, when the driver performs a wiper driving operation on his / her own intention, such as when it is raining in the reverse state, the vehicle wind can be wiped by driving the wiper as usual.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Transmission, 3 ... Shift lever, 4 ... Rear window, 7 ... Wiper, 8 ... Main piping, 8a ... Branch piping, 10 ... In-vehicle camera, 10a ... Glass window (imaging surface), 12 ... Vehicle ECU (touch panel control unit), 20 ... electric pump, 31 ... cleaning control circuit unit, B ... electromagnetic switching valve (switching valve device), L ... reverse drive state signal, T ... tank, BL ... back lamp, M1 ... wiper motor, N1 ... rear washer nozzle (window washing nozzle), N2 ... camera washer nozzle (camera washing nozzle), DSP ... display, SW1 ... washer switch, TSW ... touch panel switch.

Claims (4)

A camera cleaning nozzle for injecting the fed cleaning liquid onto the imaging surface of an in-vehicle camera disposed outside the vehicle;
A window cleaning nozzle for injecting the fed cleaning liquid into the vehicle window;
An electric pump for feeding the cleaning liquid stored in the tank;
Branching from a main pipe connecting between the electric pump and the window cleaning nozzle, a branch pipe connecting the main pipe and the camera cleaning nozzle;
A switching valve device provided at a branch portion of the main pipe and the branch pipe and capable of selectively switching the flow path of the cleaning liquid from the electric pump to the window cleaning nozzle side or the camera cleaning nozzle side;
A wiper motor for driving the wiper for wiping the vehicle window;
A wiper washer switch capable of interlocking operation for driving both the electric pump and the wiper motor;
When the reverse state signal indicating that the vehicle is in the reverse state is not input, the switching valve device is held on the window cleaning nozzle side and the wiper motor is allowed to be driven by the interlocking operation, and the reverse state signal is input. And a cleaning control circuit unit that switches the switching valve device from the window cleaning nozzle side to the camera cleaning nozzle side and prohibits driving of the wiper motor by the interlocking operation. . The vehicle cleaning device according to claim 1,
An image captured by the in-vehicle camera is displayed on a display provided in the vehicle in the reverse state, and a touch panel switch for camera cleaning is displayed, and the electric pump is driven based on an operation of the touch panel switch for camera cleaning. A vehicle cleaning apparatus comprising a touch panel control unit. The vehicle washing apparatus according to claim 1 or 2,
The vehicle washing apparatus according to claim 1, wherein the reverse state signal indicating that the vehicle is in a reverse state is an electric signal of a reverse position among the positions of the shift lever constituting the transmission of the vehicle. The vehicle cleaning device according to claim 3,
The reverse drive state signal is a power supply to a back lamp that is disposed at the rear of the vehicle and lights when the shift lever is in the reverse drive position.
The washing control circuit unit is disposed at a rear portion of the vehicle, and a part of the power supply to the back lamp is input as the reverse state signal.