JP6460186B2 - Vehicle cleaning device - Google Patents

Description

  The present invention relates to a vehicle cleaning device.

  Conventionally, it is known that when a vehicle is moved backward, the situation behind the vehicle is photographed with an in-vehicle camera arranged at the rear of the vehicle, and the photographed image is displayed on a monitor for car navigation. Yes. Since this in-vehicle camera is arranged outside the vehicle, mud or the like may adhere to the imaging surface (lens, etc.). In this case, the rear situation of the vehicle cannot be sufficiently photographed and it is difficult to confirm the rear situation. There is a problem of becoming.

  Accordingly, a vehicle cleaning device including a camera cleaning nozzle that injects cleaning liquid toward the imaging surface of the in-vehicle camera, a window cleaning nozzle that injects cleaning liquid toward the rear window, and a rear wiper device for wiping the rear window. Has been proposed (see, for example, Patent Document 1). In this vehicle cleaning device, when an electric signal indicating that the vehicle is in reverse is input, the flow path of the cleaning liquid from the electric pump is switched from the window cleaning nozzle to the camera cleaning nozzle, and the electric pump is driven. Then, the cleaning liquid is jetted from the camera cleaning nozzle onto the imaging surface of the in-vehicle camera, and the imaging surface is cleaned.

JP 2012-236583 A

  An object of the present invention is to provide a vehicular cleaning device in which an operation of driving a rear wiper device and an operation of injecting a cleaning liquid from a camera cleaning nozzle to an imaging surface of an in-vehicle camera are not easily mistaken.

A vehicle cleaning device that solves the above problems includes a camera cleaning nozzle that injects cleaning liquid toward an imaging surface of an in-vehicle camera disposed at the rear of the vehicle, and a window that injects cleaning liquid toward a rear window disposed at the rear of the vehicle. A vehicle cleaning device including a cleaning nozzle and a rear wiper device for wiping the rear window, the electric pump for feeding cleaning liquid stored in a tank, the electric pump, and the rear wiper device A switch device capable of commanding driving, wherein the switch device is an off position where the electric pump and the rear wiper device are not driven, a wiper position where the rear wiper device is driven, and the electric pump is driven to clean the camera. said electric port and wash position for ejecting the cleaning liquid from the nozzles, together with driving the rear wiper device And a wiper wash position to by driving up the injected cleaning liquid from the window cleaning nozzles, the wash position, Ri opposite direction near the said wiper position direction as a reference the off position, in the wash position, Without driving the rear wiper device, the cleaning liquid is sprayed only to the imaging surface of the in-vehicle camera among the imaging surface of the in-vehicle camera and the rear window, and at the wiper wash position, the imaging surface of the in-vehicle camera and the rear Cleaning liquid is sprayed only on the rear window of the window.

  According to the same configuration, the wash position is in the direction opposite to the wiper position direction with respect to the off position. For example, when the vehicle is in the reverse drive state, the wash position is operated in the direction opposite to the wiper position direction. Thus, the cleaning liquid can be jetted from the camera cleaning nozzle to the imaging surface of the in-vehicle camera. At this time, since the wash position is in the direction opposite to the wiper position direction, it is difficult for the driver to mistake the operation for driving the rear wiper device.

In the cleaning device for the vehicle, before Symbol wiper wash position, and it can be operated via the wiper position from the OFF position.

  ADVANTAGE OF THE INVENTION According to this invention, the washing | cleaning apparatus for vehicles which makes it easy to make a mistake with the operation which drives a rear wiper apparatus and the operation which sprays a washing | cleaning liquid from the camera washing nozzle to the imaging surface of a vehicle-mounted camera can be provided.

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. The electric circuit diagram for demonstrating the electrical structure of the washing | cleaning apparatus for vehicles of another example. The electric circuit diagram for demonstrating the electrical structure of the washing | cleaning apparatus for vehicles of another example.

Hereinafter, an embodiment of a vehicle cleaning apparatus 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 the transmission 2 next to the driver's seat, and the vehicle 1 shifts by operating the shift lever 3 to each position (each position). The transmission 2 of this embodiment employs an automatic transmission, and the shift lever 3 is positioned at a position such as a parking position (P), a reverse position (R), a neutral position (N), and a drive position (D). Operation (arrangement) is possible. For example, when the shift lever 3 is operated to the reverse position, the transmission 2 places the vehicle 1 in a reverse drive state in which the vehicle 1 can move backward. At this time, while the shift lever 3 is shifted to the reverse position, the back lamp BL provided at the rear portion of the vehicle 1 is turned on.

The console panel of the vehicle 1 is provided with a display device DSP 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. The rear wiper device 6 has a rear wiper motor M1 and a wiper blade 7. When the rear wiper motor M1 is driven, the wiper blade 7 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 a nozzle port directed toward the lower rear window 4, and the cleaning liquid is sprayed from the nozzle port toward the wiping surface of the rear window 4.

  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 is a pump for supplying the cleaning liquid to the rear washer nozzle N1 through the main pipe 8 from the tank T that is also provided in the engine room and stores the cleaning liquid. When the switch device SW1 provided in the driver's seat is operated, the washer pump P is driven by the command by the pump motor M2 (see FIG. 2), and the cleaning liquid is supplied from the tank T through the main pipe 8 to the rear washer nozzle. It is designed to feed N1. In the present embodiment, the washer pump P and the pump motor M2 constitute the electric pump 20.

  A vehicle-mounted camera 10 for back monitoring 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 to the display device DSP as image data. The display device 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, the in-vehicle camera 10 starts an imaging operation and outputs the image data to the display device DSP. Further, when the shift lever 3 is shifted from the reverse position to another position, the in-vehicle 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 is directed to a glass window 10a (see FIG. 2) provided to protect the lens of the in-vehicle camera 10 from mud, dust, dust, etc. It is jetted toward the glass window 10a of the 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 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 switches the flow path of the cleaning liquid from the washer pump P from the rear washer nozzle N1 side to the camera washer nozzle N2 side while a voltage is applied (energized).

  When the conditions described later are satisfied, the electromagnetic switching valve B is driven by application of voltage (energization), 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.

  From this state, when the switch device SW1 is operated and the pump motor M2 (see FIG. 2) is driven, the washer pump P is driven and the cleaning liquid from the tank T passes through the main pipe 8 and the branch pipe 8a. It is fed to the camera washer nozzle N2. Then, the cleaning liquid is ejected from the nozzle opening of the camera washer nozzle N2 to the glass window 10a of the in-vehicle camera 10.

  On the other hand, when the condition described later is not satisfied, the electromagnetic switching valve B is not applied (energized) and is not driven. 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, and the rear washer nozzle N1 and the washer pump P are connected via the main pipe 8. Accordingly, at such a normal time, the rear washer nozzle N1 is in a state where the washing liquid from the tank T can be fed by the washer pump P.

  From this state, when the switch device SW1 is operated and the pump motor M2 (see FIG. 2) is driven, the washer pump P is driven, and the cleaning liquid from the tank T passes through the main pipe 8 and the rear washer nozzle. To N1. 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 in-vehicle camera cleaning device configured as described above will be described.
As shown in FIG. 2, the back lamp BL provided at the rear part of the vehicle 1 is grounded at one end and connected to the lamp harness L1 at the other end, and the shift lever 3 is in the reverse position. It is connected to the positive power supply line L0 connected to the positive terminal of the battery via the switch 11 and the fuse F1 which are turned on in the state. Therefore, the switch 11 is turned on when the shift lever 3 is operated to the reverse position, supplies current to the back lamp BL, and turns on the back lamp BL. The switch 11 is turned off when the shift lever 3 is operated to a position other than the reverse position, cuts off the supply of current to the back lamp BL, and turns off the back lamp BL.

The lamp harness L1 is connected to the input terminal of the AND circuit 12. When the shift lever 3 is operated to the reverse position, the AND circuit 12 indicates that the vehicle is in a reverse drive state (H level). A reverse state signal R is input. The AND circuit 12 is connected to a switch device SW1.
(Switch device SW1)
The switch device SW1 drives the pump motor M2 (electric pump 20) and the rear wiper device 6 to the off position (OFF), the wiper position (ON) to drive the rear wiper device 6, the rear wiper device 6 and the pump motor M2. A wiper wash position (ON + WASH) and a wash position (WASH) for driving the pump motor M2 are provided. Further, the switch device SW1 of the present embodiment has an intermittent wiper position (INT) for intermittently driving the rear wiper device 6. The switch device SW1 of the present embodiment is a dial switch, and has an intermittent wiper position (INT), a wiper position (ON), and a wiper wash position (ON + WASH) on the basis of an off position (OFF). They are arranged in this order. In addition, the switch device SW1 has a wash position (WASH) arranged in a direction opposite to the wiper position (ON) direction with reference to the off position (OFF).

  The switch device SW1 is connected to the control unit S by first to third signal lines S1 to S3. Then, when the switch device SW1 is operated to the intermittent wiper position (INT), the first signal line S1 changes from the state of being originally connected to the ground to the H level to the L level. Further, when the switch device SW1 is operated to the wiper position (ON) or the wiper wash position (ON + WASH), the second signal line S2 is connected to the ground and is originally set to the L level. Further, when the switch device SW1 is operated to the wiper wash position (ON + WASH) or the wash position (WASH), the third signal line S3 is connected to the ground and is changed to the L level from the original state. The third signal line S3 has one end connected to the other end of the pump motor M2 connected to the positive power supply line L0 via the fuse F2. Therefore, when the switch device SW1 is operated to the wiper wash position (ON + WASH) or the wash position (WASH), the pump motor M2 is energized and driven by connecting the other end of the pump motor M2 to the ground.

When the second signal line S2 is connected to the input terminal of the AND circuit 12 and the switch device SW1 is not operated to the wiper position (ON) or the wiper wash position (ON + WASH), the AND circuit 12 includes a rear wiper device. A wiper non-drive signal N (H level) indicating that 6 is in a non-drive state is input. The AND circuit 12 is a reverse state signal R (H level) indicating that the vehicle is in a reverse state, and a wiper (H level) indicating that the rear wiper device 6 is in a non-driven state. If it is the non-drive signal N, an H level control signal L is output to the pressure reduction control unit 31. In the present embodiment, the electromagnetic switching valve B, the AND circuit 12, and the pressure reduction control unit 31 constitute a switching unit.
(Decompression controller 31)
The decompression control unit 31 applies a switching voltage to the electromagnetic switching valve B for a preset first time based on the input of the control signal L output from the AND circuit 12, and after the first time has elapsed. While the control signal L is continuously input, a switching state holding voltage lower than the switching voltage is applied instead of the switching voltage.

  Specifically, the decompression control unit 31 applies a switching state holding voltage to the electromagnetic switching valve B by reducing the switching voltage, and includes a voltage dividing resistor R1, an NPN transistor Tr1, and an NPN transistor Tr2. And a timer TM.

  One end of the voltage dividing resistor R1 is connected to the ground side terminal of the exciting coil C in the electromagnetic switching valve B described later, and the other end is grounded (connected to the ground) via the transistor Tr1. The transistor Tr1 is turned on while the AND circuit 12 is connected to its base terminal via a resistor R2 and the control signal L (H level signal) is being input.

The ground side terminal of the exciting coil C in the electromagnetic switching valve B is grounded (connected to the ground) via the transistor Tr2. The transistor Tr2 is turned on while the AND circuit 12 is connected to its base terminal via the resistor R3 and the timer TM and the timer signal TK (H level signal) from the timer TM is being input. When the control signal L (H level signal) is input, the timer TM outputs a timer signal TK (H level signal) for a preset first time, and the control signal is output after the first time has elapsed. Even if L continues to be input, the output of the timer signal TK is stopped.
(Rear wiper motor M1)
The rear wiper motor M1 that drives the rear wiper device 6 has one end connected to a common contact 13c of the relay switch 13, and the a contact 13a of the relay switch 13 is connected to the positive power line L0 via the fuse F2. A movable contact 13d is connected to the common contact 13c of the relay switch 13, and when the adjacent exciting coil 13z is energized (excited), the common contact 13c (that is, one end of the rear wiper motor M1) becomes the a contact 13a (that is, a power source). When the exciting coil 13z is not energized, the common contact 13c is connected to the b contact 13b. On the other hand, the other end of the rear wiper motor M1 is grounded.

The rear wiper motor M1 includes an automatic fixed position stop device for the rear wiper device 6 (the wiper blade 7 is brought to the home position even when the switch device SW1 is turned off when the wiper blade 7 is in a position other than the home position. A cam switch 14 constituting a device that is moved and stopped is incorporated. (Cam switch 14)
The cam switch 14 has an a contact 14a, a b contact 14b, a common contact 14c, and a movable contact 14d. The a contact 14a of the cam switch 14 is connected to the positive power supply line L0 via the fuse F2. The b contact 14b of the cam switch 14 is connected to the other end of the rear wiper motor M1 and grounded. One end of the movable contact 14d of the cam switch 14 is connected to the common contact 14c connected to the b contact 13b of the relay switch 13, and moves with the rotation of the rear wiper motor M1. The movable contact 14d of the cam switch 14 is movable so that the other end is connected to either the a contact 14a or the b contact 14b.

  When the wiper blade 7 is in a position other than the home position, the movable contact 14d of the cam switch 14 is connected to the a contact 14a. Therefore, the rear wiper motor M1 is maintained in power supply from the positive power line L0 via the cam switch 14 even if the common contact 13c of the relay switch 13 is connected to the b contact 13b.

When the wiper blade 7 is located at the home position, the movable contact 14d is disconnected from the a contact 14a and connected to the b contact 14b. As a result, both ends of the rear wiper motor M1 are closed and grounded, and power generation braking is applied and stopped.
(Control part S)
The control unit S is connected to the power supply line L0 via the exciting coil 13z and the fuse F2 of the relay switch 13. Then, the controller S intermittently connects the exciting coil 13z to the ground in a state where the switch device SW1 is operated to the intermittent wiper position (INT), and the wiper position (ON) or wiper wash position (ON + WASH). In the state operated in this way, the exciting coil 13z is connected to the ground, and the exciting coil 13z is energized (excited).
(Electromagnetic switching valve B)
The electromagnetic switching valve B has an introduction port P0 for introducing the cleaning liquid from the main pipe 8 upstream from the electromagnetic switching valve B. The electromagnetic switching valve B is downstream of the electromagnetic switching valve B, and is downstream of the electromagnetic switching valve B and a first outlet port P1 for leading the cleaning liquid to the main pipe 8 connected to the rear washer nozzle N1. The branch pipe 8a connected to the camera / washer nozzle N2 has a second outlet port P2 for leading the cleaning liquid.

  The electromagnetic switching valve B drives the valve SB provided in the valve body so that the introduction port P0 is electrically connected to one of the first derivation port P1 and the second derivation port P2. Is to be blocked.

  The valve SB is driven and controlled by an exciting coil C provided in the electromagnetic switching valve B. When the exciting coil C is not energized (in the initial state), the valve SB communicates the introduction port P0 and the first derivation port P1 and keeps the introduction port P0 and the second derivation port P2 in a disconnected state. . On the other hand, when the exciting coil C is energized (while energized), the valve SB operates to connect the introduction port P0 and the second derivation port P2, and the introduction port P0 and the first derivation port P1. Is kept shut off.

  The exciting coil C of the electromagnetic switching valve B has a high potential side terminal connected to the positive power supply line L0 via the fuse F2, and a ground side terminal connected to the decompression control unit 31 as described above. As a result, while the control signal L is input to the decompression control unit 31, the transistor Tr1 is turned on and the ground side terminal of the exciting coil C is grounded via the voltage dividing resistor R1. When the control signal L is input to the decompression control unit 31, the transistor Tr2 is turned on for the first time, and the ground side terminal of the exciting coil C is directly grounded (via the transistor Tr2). Therefore, a current flows without passing through the voltage dividing resistor R1 until the first time elapses, and a high voltage switching voltage is applied to the exciting coil C. As a result, a sufficient electromagnetic force for driving the valve SB to switch the flow path is generated, and the valve SB operates to bring the introduction port P0 and the second outlet port P2 into communication. Here, the first time is set in advance to a time at which the switching operation of the electromagnetic switching valve B is sufficiently completed. Further, while the control signal L is continuously input after the first time has elapsed, the transistor Tr2 is turned off, so that a current flows through the voltage dividing resistor R1 and the excitation coil C is low. A voltage switching state holding voltage is applied. As a result, an electromagnetic force for holding the valve SB is generated, the valve SB is held, and the introduction port P0 and the second outlet port P2 are maintained in communication with each other.

Here, the operation | movement and effect | action of the washing | cleaning apparatus for vehicles of this embodiment are demonstrated.
For example, when the shift lever 3 is operated to the reverse position in a state where the switch device SW1 is in the OFF position (OFF), that is, in a state where the wiper non-drive signal N is input to the AND circuit 12, the AND circuit 12 The reverse state signal R is input, and the control signal L is output from the AND circuit 12.

  When this state is maintained, the timer signal TK becomes H level for the first time, and during that time, the transistor Tr2 is turned on and a high switching voltage is applied to the electromagnetic switching valve B. Thereby, the electromagnetic switching valve B (excitation coil C) is energized, and the introduction port P0 (main pipe 8) and the second outlet port P2 (branch pipe 8a) communicate with each other. That is, the flow path of the cleaning liquid from the electric pump 20 is switched to the camera / washer nozzle N2 side.

  The transistor Tr1 is turned on while the control signal L (H level) is being output. Then, after the elapse of the first time and while the control signal L is output, the transistor Tr2 is turned off, so that a low switching state holding voltage is applied to the electromagnetic switching valve B. Thereby, the state where the introduction port P0 (main pipe 8) and the second outlet port P2 (branch pipe 8a) communicate with each other is maintained. That is, the flow path of the cleaning liquid from the electric pump 20 remains switched to the camera / washer nozzle N2 side.

  In this state, when the switch device SW1 is operated to the wash position (WASH), the electric pump 20 is driven, and the cleaning liquid is sprayed from the camera / washer nozzle N2 to the glass window 10a of the in-vehicle camera 10, and the glass window 10a. Mud, dust, dust, etc. adhering to the surface are removed.

  Further, as described above, when the driver operates the switch device SW1 to the wiper position (ON) in order to ensure the visibility of the rear window 4 with the shift lever 3 being operated to the reverse position, the control unit S The exciting coil 13z is energized, and the rear wiper motor M1 is connected to the power supply line L0 via the relay switch 13 and the fuse F2. As a result, the rear wiper device 6 is driven, and the rear window 4 is wiped by the wiper blade 7. At this time, the wiper non-driving signal N is not input to the AND circuit 12 (the second signal line S2 becomes L level), and the output of the control signal L from the AND circuit 12 is stopped. (Output is set to L level). Then, the transistor Tr1 is turned off, the electromagnetic switching valve B (excitation coil C) is de-energized, the introduction port P0 (main pipe 8) and the second outlet port P2 (branch pipe 8a) are shut off and introduced. The port P0 and the first derivation port P1 are communicated. That is, the flow path of the cleaning liquid from the electric pump 20 is returned to the rear washer nozzle N1 side.

  In this state, when the switch device SW1 is operated to the wiper wash position (ON + WASH), the electric pump 20 is driven and the cleaning liquid is sprayed from the rear washer nozzle N1 to the rear window 4.

Next, the characteristic effects of the above embodiment will be described below.
(1) The flow path of the cleaning liquid is based on the input of the wiper non-drive signal N indicating that the rear wiper device 6 is in the non-drive state and the reverse drive state signal R indicating that the vehicle 1 is in the reverse drive state. Is switched from the rear washer nozzle N1 to the camera washer nozzle N2. Therefore, when the rear wiper device 6 is in the driving state, the cleaning liquid is jetted onto the rear window 4 when the electric pump 20 is driven. That is, regardless of whether the vehicle 1 is in the reverse drive state, in the state where the rear wiper device 6 is driven to secure the field of view of the rear window 4, the flow path of the cleaning liquid is changed from the rear washer nozzle N1 to the camera washer nozzle N2. The cleaning liquid can be quickly sprayed onto the rear window 4 without being switched to. Therefore, while the glass window 10a (imaging surface) of the in-vehicle camera 10 can be cleaned in the reverse drive state, the cleaning liquid can be quickly sprayed to the rear window 4 even in the reverse drive state.

  (2) The wiper wash position (ON + WASH) can be operated from the OFF position (OFF) via the wiper position (ON). Can previously set the flow path of the cleaning liquid to the rear washer nozzle N1 side by a wiper driving signal based on the previous wiper position. Alternatively, it is possible to start switching the cleaning liquid flow path to the rear washer nozzle N1 side. Therefore, when the wiper wash position (ON + WASH) is operated, the cleaning liquid can be quickly sprayed onto the rear window 4.

  (3) Since the wash position (WASH) is in the direction opposite to the wiper position (ON) direction with respect to the off position (OFF), for example, when the vehicle 1 is in the reverse drive state, the direction is opposite to the wiper position direction. By operating to the wash position, the cleaning liquid can be sprayed from the camera washer nozzle N2 to the glass window 10a of the in-vehicle camera 10. At this time, since the wash position (WASH) is in a direction opposite to the wiper position (ON) direction, it is difficult to be mistaken for an operation in which the driver drives the rear wiper device 6.

  (4) When the wiper non-drive signal N and the reverse drive state signal R are input together, the flow path is switched to the camera washer nozzle N2 regardless of the operation for commanding the drive of the electric pump 20 by the switch device SW1. Thereafter, when an operation for instructing driving of the electric pump 20 is performed, it is possible to promptly inject the cleaning liquid onto the glass window 10a of the in-vehicle camera 10.

  (5) The wiper non-drive signal N is a signal indicating that the switch device SW1 is operated to a position where the rear wiper device 6 is not driven. Therefore, for example, even if the automatic fixed position stop device of the rear wiper device 6 works and moves to the stop position, if the driver operates the switch device SW1 to a position where the rear wiper device 6 is not driven, the flow path can be quickly connected to the camera. It is switched to the washer nozzle N2. Specifically, for example, if the switch device SW1 is operated from the wiper position (ON) to the off position (OFF), the flow path can be quickly switched to the camera / washer nozzle N2 even if the automatic fixed position stop device is working. . Therefore, when an operation for instructing driving of the electric pump 20 (to the wash position) is continuously performed, the cleaning liquid can be promptly injected onto the glass window 10a of the in-vehicle camera 10.

The above embodiment may be modified as follows.
In the above embodiment, the switch device SW1 is connected to the input terminal of the AND circuit 12, and the wiper non-drive signal N is a signal indicating that the switch device SW1 is being operated to a position where the rear wiper device 6 is not driven. However, it may be changed to another wiper non-driving signal N indicating that the rear wiper device 6 is in a non-driving state.

  For example, as shown in FIG. 3, one end (common contact 13 c) that is a positive terminal of the rear wiper motor M <b> 1 may be changed to a configuration in which the terminal is connected to the input terminal of the AND circuit 12 via the inverter circuit 41.

  For example, as shown in FIG. 4, the common contact 14 c (b contact 13 b) of the cam switch 14 may be changed to a configuration connected to the input terminal of the AND circuit 12 via the inverter circuit 42.

  By doing so, the wiper non-drive signal N indicating that the rear wiper device 6 is in the non-driven state is input to the AND circuit 12 only when the power is not actually supplied to the rear wiper motor M1. Specifically, for example, even if the switch device SW1 is operated from the wiper position (ON) to the off position (OFF), while the automatic fixed position stop device of the rear wiper device 6 operates and moves to the stop position, the wiper The non-drive signal N is not input to the AND circuit 12.

  In the above embodiment, the switch device SW1 is a dial switch. However, the switch device SW1 may be changed to another type of switch device, and the arrangement of each position may be changed. Further, the switch device SW1 may be changed to one having no intermittent wiper position (INT).

  In the above embodiment, the wiper non-drive signal N indicating that the rear wiper device 6 is in the non-driven state is input to the AND circuit 12 even when the switch device SW1 is operated to the intermittent wiper position (INT). The wiper non-driving signal N may not be input to the AND circuit 12 when the switch device SW1 is operated to the intermittent wiper position (INT).

  In the above embodiment, when both the wiper non-drive signal N and the reverse drive state signal R are input, the flow path is switched to the camera / washer nozzle N2 regardless of the operation for commanding the drive of the electric pump 20. However, the configuration may be such that the flow path is switched to the camera washer nozzle N2 when further other conditions are satisfied. For example, both the wiper non-drive signal N and the reverse drive state signal R may be input, and the flow path may be switched to the camera / washer nozzle N2 in accordance with an operation for instructing driving of the electric pump 20. In this case, it is preferable to drive the electric pump 20 after the flow path is switched.

  In the above embodiment, the pressure reduction control unit 31 is provided. However, the configuration is not limited thereto, and the pressure reduction control unit 31 may not be provided. In other words, the excitation coil C may be simply energized (with the switching voltage) while the control signal L is being output.

The technical idea that can be grasped from the above embodiment will be described below together with the effects thereof.
(A) In the vehicular cleaning apparatus according to any one of claims 1 to 3, when the wiper non-drive signal and the reverse drive state signal are both input to the switching unit, A vehicle cleaning apparatus, wherein the flow path of the cleaning liquid is switched from the window cleaning nozzle to the camera cleaning nozzle regardless of an operation for instructing driving of the electric pump.

  According to the same configuration, when both the wiper non-drive signal and the reverse drive state signal are input, the flow path is switched to the camera cleaning nozzle regardless of the operation for commanding the drive of the electric pump by the switch device. When an operation for instructing driving of the electric pump is performed, the cleaning liquid can be promptly sprayed onto the imaging surface of the in-vehicle camera.

  (B) In the vehicular cleaning apparatus according to any one of claims 1 to 3 and (a), the wiper non-drive signal indicating that the rear wiper device is in a non-driven state indicates the rear wiper device. A vehicle washing apparatus, characterized in that it is a signal indicating that the switch device is operated at a position where it is not driven.

  According to the same configuration, the wiper non-drive signal is a signal indicating that the switch device is operated to a position where the rear wiper device is not driven. For example, the automatic fixed position stop device of the rear wiper device works to the stop position. Even if the driver is moving, if the driver operates the switch device to a position where the rear wiper device is not driven, the flow path is quickly switched to the camera cleaning nozzle. Therefore, when an operation for instructing driving of the electric pump is performed, it is possible to promptly spray the cleaning liquid onto the imaging surface of the in-vehicle camera.

Other technical ideas will be described below.
In the vehicle cleaning device, even when the rear wiper device is driven to secure the rear window field of view, when the vehicle is in the reverse drive state, the flow path of the cleaning liquid is switched to the camera cleaning nozzle side. The cleaning liquid cannot be sprayed to the rear window promptly. Accordingly, an object of the present invention is to provide a vehicular cleaning device that can clean the imaging surface of an in-vehicle camera in a reverse drive state, and can quickly spray a cleaning liquid onto the rear window even in a reverse drive state.

  The vehicle cleaning device that achieves the above-described object sprays the cleaning liquid toward the imaging surface of the in-vehicle camera disposed at the rear of the vehicle and the cleaning liquid toward the rear window disposed at the rear of the vehicle. A vehicle cleaning apparatus including a window cleaning nozzle and a rear wiper device for wiping the rear window, the electric pump for feeding cleaning liquid stored in a tank to the window cleaning nozzle, and the electric motor A switch device capable of commanding driving of the pump and the rear wiper device; a branch pipe branching from a main pipe connecting between the electric pump and the window cleaning nozzle; and a branch pipe connecting the main pipe and the camera cleaning nozzle; A wiper non-drive signal provided at a branch portion of the main pipe and the branch pipe and indicating that the rear wiper device is in a non-drive state and a front Vehicle based on the fact that a reverse state signal indicative of the reverse state is input together and a switching means for switching the camera wash nozzle flow path of the cleaning liquid from the window cleaning nozzle.

  According to this configuration, the flow path of the cleaning liquid is based on the input of both the wiper non-drive signal indicating that the rear wiper device is in the non-drive state and the reverse drive state signal indicating that the vehicle is in the reverse drive state. Since the window cleaning nozzle is switched to the camera cleaning nozzle, when the electric wiper is driven when the rear wiper device is in a driving state, the cleaning liquid is sprayed to the rear window. That is, when the rear wiper device is driven to secure the rear window visibility regardless of whether the vehicle is moving backward, the flow path of the cleaning liquid is not switched from the window cleaning nozzle to the camera cleaning nozzle. The cleaning liquid can be sprayed to the rear window.

  In the vehicle cleaning device, the switch device includes an off position that does not drive the electric pump and the rear wiper device, a wiper position that drives the rear wiper device, and a wiper wash position that drives the rear wiper device and the electric pump. And a wash position for driving the electric pump, and the wiper wash position is preferably operable from the off position via the wiper position.

  According to this configuration, since the wiper wash position can be operated from the off position via the wiper position, when the wiper wash position is operated to spray the cleaning liquid to the rear window, the previous wiper position is set. By using the wiper driving signal based on the above, the flow path of the cleaning liquid can be set on the window cleaning nozzle side in advance. Alternatively, it is possible to start switching for setting the flow path of the cleaning liquid to the window cleaning nozzle side. Therefore, when the wiper wash position is operated, the cleaning liquid can be quickly sprayed to the rear window.

In the vehicular cleaning device, it is preferable that the wash position is in a direction opposite to the wiper position direction with respect to the off position.
According to the same configuration, the wash position is in the direction opposite to the wiper position direction with respect to the off position. For example, when the vehicle is in the reverse drive state, the wash position is operated in the direction opposite to the wiper position direction. Thus, the cleaning liquid can be jetted from the camera cleaning nozzle to the imaging surface of the in-vehicle camera. At this time, since the wash position is in the direction opposite to the wiper position direction, it is difficult for the driver to mistake the operation for driving the rear wiper device.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 4 ... Rear window, 6 ... Rear wiper apparatus, 8 ... Main piping, 8a ... Branch piping, 10 ... In-vehicle camera, 10a ... Glass window (imaging surface), 12 ... AND circuit which comprises a part of switching means , 20 ... Electric pump, 31 ... Depressurization control part constituting part of the switching means, B ... Electromagnetic switching valve constituting part of the switching means, N ... Wiper non-drive signal, R ... Reverse drive state signal, T ... Tank , N1 ... rear washer nozzle (window cleaning nozzle), N2 ... camera washer nozzle (camera cleaning nozzle), SW1 ... switch device.

Claims (2)

A camera cleaning nozzle that sprays the cleaning liquid toward the imaging surface of the in-vehicle camera disposed at the rear of the vehicle;
A window cleaning nozzle that injects cleaning liquid toward a rear window disposed at the rear of the vehicle;
A vehicle cleaning device including a rear wiper device for wiping the rear window,
An electric pump for feeding the cleaning liquid stored in the tank;
A switch device capable of commanding driving of the electric pump and the rear wiper device;
The switch device includes an off position where the electric pump and the rear wiper device are not driven, a wiper position where the rear wiper device is driven, a wash position where the electric pump is driven and the cleaning liquid is ejected from the camera cleaning nozzle , A wiper wash position for driving a rear wiper device and driving the electric pump to inject cleaning liquid from the window cleaning nozzle ;
The wash position, Ri opposite direction near the said wiper position direction as a reference the off position,
In the wash position, without driving the rear wiper device, the cleaning liquid is sprayed only on the imaging surface of the in-vehicle camera among the imaging surface of the in-vehicle camera and the rear window,
In the wiper wash position, the vehicle cleaning apparatus sprays cleaning liquid only on the rear window of the imaging surface of the in-vehicle camera and the rear window . The vehicle cleaning device according to claim 1,
Before SL wiper wash position, vehicle cleaning apparatus characterized by being operable via said wiper position from the OFF position.