JP2009209892A - Liquid level detection device, pump device and vehicular washer device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid level detection device for easily performing connection work of a connector. <P>SOLUTION: A pump body 21 includes: a connector part 49 of deriving a power supply terminal 48b. A liquid level detection adapter 22 has a first connector part 79, having a connecting terminal 75b connected to the power supply terminal 48b by the connection to the connector part 49; a sidewall part 71a for supporting liquid level detection electrodes 74a and 74b; and a second connector part 80, having a power terminal connected to the connecting terminal 75b and an output terminal connected to the liquid level detection electrodes 74a and 74b. The second connector part 80 is connected to an external connector 81 for connecting the power terminal to a battery and extracting a liquid level detection signal, in response to an electric continuing state between the liquid level detection electrodes 74a and 74b. The liquid level detection adapter 22 is installed on a sidewall 11a so that the liquid level detection electrodes 74a and 74b project into a tank 3 from a second opening part 11e, and outputs the liquid level detection signal from the output terminal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid level detection device for detecting the liquid level of a liquid in a tank, a pump device for discharging the liquid stored in the tank to a windshield and a rear glass of a vehicle, and a vehicle equipped with the pump device. It relates to a washer device.

2. Description of the Related Art Conventionally, in a vehicle washer device that discharges cleaning liquid (liquid) in a washer tank to the windshield and rear glass of a vehicle by rotating an impeller by a driving force of a motor, the liquid level of the cleaning liquid in the washer tank (from the bottom of the tank) Some of them are equipped with a liquid level detection device for detecting the height of the liquid level. For example, the liquid level detection device described in Patent Document 1 includes a pair of liquid level detection electrodes arranged so as to protrude into the tank from a lower portion of the side wall of the washer tank. The position detection electrodes are spaced apart in the vertical direction. Further, these liquid level detection electrodes are electrically connected to a warning ECU for lighting a warning lamp when the liquid level of the cleaning liquid in the washer tank is low. When the amount of the cleaning liquid in the washer tank is sufficient, both the pair of liquid level detection electrodes are immersed in the cleaning liquid, and the two liquid level detection electrodes are conducted through the cleaning liquid, so that a warning light Is off. On the other hand, when the cleaning liquid in the washer tank becomes low and one liquid level detection electrode is exposed from the cleaning liquid and the conduction between the pair of liquid level detection electrodes is interrupted, the warning lamp is turned on and the liquid level of the cleaning liquid is changed. The driver of the vehicle is warned that it is low.
JP 2008-14866 A

  By the way, in the vehicle washer device provided with the liquid level detection device described in Patent Document 1, the liquid level detection device and the pump that rotates the impeller by the driving force of the motor and discharges the cleaning liquid are respectively provided on the side walls of the washer tank. Is attached. Therefore, an external connector for taking out a detection signal corresponding to the conduction state of the pair of liquid level detection electrodes is connected to the connector part of the liquid level detection device, and an external connector for supplying power to the motor is connected to the pump. It will be connected to the connector part. Further, when the pump is configured to alternatively discharge the cleaning liquid from either one of the two discharge ports according to the rotation direction of the motor that is rotated forward and backward, the liquid level detection device and the pump In addition, a control relay for switching the polarity of the power supply voltage supplied to the motor is further attached to the tank. In this case, since the pump and the control relay are electrically connected and the control relay is electrically connected to an external power source, more external connectors are required. Therefore, in the vehicle washer device provided with the liquid level detection device, the wiring harness connected to the external connector becomes complicated and the connector connection work becomes complicated.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a liquid level detection device, a pump device, and a vehicle washer device capable of easily performing connector connection work.

  In order to solve the above-mentioned problem, the invention described in claim 1 is characterized in that a first opening is formed and a side wall having a second opening formed above the first opening is formed inside. At least a pair of liquid level detection electrodes for detecting the liquid level of the liquid is attached to the tank in which the liquid is stored so as to protrude from the second opening into the tank, and form a pair. A liquid level detection device that outputs a liquid level detection signal corresponding to a conduction state between level detection electrodes, wherein a suction part is inserted into the first opening, and the liquid in the tank is sucked from the suction part. A connection that is connected to the connector portion from which a power supply terminal for supplying power to the pump main body provided integrally with the pump main body discharged from the discharge port is connected and connected to the power supply terminal by connection with the connector portion First having a terminal A connector part, an electrode support part for supporting the pair of liquid level detection electrodes, a power supply terminal connected to the connection terminal, and a liquid level detection signal connected to the pair of liquid level detection electrodes to output the liquid level detection signal And a second connector portion to which an external connector for connecting the power supply terminal to an external power supply and taking out the liquid level detection signal is connected.

  According to this configuration, it is possible to detect whether the liquid level of the liquid in the tank is higher or lower than the predetermined position based on the liquid level detection signal taken out via the external connector. Further, the pump body and the liquid level detection device can be assembled by connecting the connector part of the pump body and the first connector part of the liquid level detection adapter. Further, when the connector part and the first connector part are connected, the positional relationship between the suction part of the pump body and the liquid level detection electrode forming a pair of the liquid level detection adapter is determined. Accordingly, when the pump device formed by assembling the pump main body and the liquid level detection device is inserted into the first opening and the liquid level detection electrode is inserted into the second opening and attached to the tank, the suction unit The liquid level in the tank can be detected in a predetermined positional relationship. In addition, since the power supply terminal connected to the external power supply for supplying power to the pump body and the output terminal for outputting the liquid level detection signal are concentrated in the second connector part of the liquid level detection adapter, By connecting an external connector, it is possible to supply power to the pump body and to output a liquid level detection signal externally. Therefore, an external connector that is directly connected to the pump main body to supply power to the pump main body is not necessary, and the number of connectors to be connected is reduced. As a result, the external connector can be easily connected.

  According to a second aspect of the present invention, the suction portion for sucking the liquid in the tank is inserted into the tank from the first opening formed in the side wall of the tank. A pump device to be attached, comprising: a motor disposed in a motor chamber; an impeller disposed in the pump chamber and rotated by the motor; and a connector portion having a power feeding terminal for feeding power to the motor; A first connector portion including a pump body that discharges liquid sucked into the pump chamber from the suction portion by rotation of the impeller from a discharge port, and a connection terminal that is connected to the power supply terminal by connection with the connector portion. And at least a pair of liquid level detection electrodes projecting into the tank from a second opening formed above the first opening on the side wall of the tank. And an output terminal for outputting a liquid level detection signal corresponding to a conduction state between the liquid level detection electrode paired with the power supply terminal connected to the connection terminal and the power supply terminal connected to the external power source And a liquid level detection adapter having a second connector portion to which an external connector for taking out the liquid level detection signal is connected.

  According to this configuration, the pump body and the liquid level detection adapter can be assembled by connecting the connector part of the pump body and the first connector part of the liquid level detection adapter, and the suction of the pump body The positional relationship between the liquid level detection electrode and the liquid level detection electrode of the liquid level detection adapter is determined. Therefore, when the pump device formed by assembling the pump main body and the liquid level detection adapter is inserted into the first opening and the liquid level detection electrode is inserted into the second opening and attached to the tank, the suction unit The liquid level in the tank can be detected in a predetermined positional relationship. In addition, since the power supply terminal connected to the external power supply for supplying power to the motor of the pump body and the output terminal for outputting the liquid level detection signal are concentrated in the second connector portion of the liquid level detection adapter, the second connector By connecting an external connector to the unit, it is possible to supply power to the motor of the pump body and to output a liquid level detection signal externally. Therefore, an external connector connected to the pump body for supplying power to the motor is not necessary, and the number of connectors to be connected is reduced. As a result, the external connector can be easily connected. Further, it is possible to detect whether the liquid level of the liquid in the tank is higher or lower than a predetermined position based on the liquid level detection signal taken out via the external connector.

  According to a third aspect of the present invention, in the pump device according to the second aspect, the liquid level detection adapter includes a first connector housing that surrounds the connection terminal, a second connector that surrounds the output terminal and the power supply terminal. A connector housing and an adapter housing integrally formed with the electrode support portion, the electrode support portion having a shape protruding outward from the adapter housing, and the liquid level detection electrodes forming a pair are each The gist of the invention is that the tip of the liquid level detection electrode is supported by the electrode support in a state of being exposed from the tip of the electrode support.

  According to this configuration, the electrode support portion has a shape protruding outward from the adapter housing, and the liquid level detection electrodes that form a pair are such that the front end portion of each liquid level detection electrode is exposed from the front end portion of the electrode support portion. In this state, it is supported by the electrode support portion. Therefore, the drag acting from the tank side when the liquid level detection electrode is inserted into the second opening can be received by the electrode support. As a result, the drag is suppressed from acting on the electrical connection portion of each liquid level detection electrode.

  According to a fourth aspect of the present invention, in the pump device according to the second or third aspect, the liquid level detection electrode is liquid-tightly inserted into an electrode insertion hole formed through a grommet made of a rubber material. In addition, the gist is to be inserted into the second opening through the grommet.

According to this configuration, since the liquid level detection electrode is liquid-tightly inserted into the electrode insertion hole provided in the rubber grommet, liquid leakage from between the liquid level detection electrode and the grommet is prevented. .
According to a fifth aspect of the present invention, in the pump device according to any one of the second to fourth aspects, the liquid level detection adapter switches a polarity of a power supply voltage supplied to the motor. And the two connection terminals that are connected to the power supply terminal via the polarity switching circuit, and the pump body rotates forward according to the polarity of the two discharge ports and the supplied power supply voltage. And the motor rotated in reverse and the two power supply terminals, and the liquid sucked into the pump chamber is divided into two according to the rotation direction of the impeller rotated forward and reverse by the motor. The gist is to discharge from any one of the discharge ports.

  According to this configuration, the polarity switching circuit that switches the polarity of the power supply voltage supplied to the motor of the pump body is provided in the liquid level detection adapter, and the power supply terminal is connected to the connection terminal via the polarity switching circuit. . Therefore, even if the pump body is configured to discharge liquid from one of the two discharge ports according to the rotation direction of the motor, the pump body or the liquid level detection adapter Since it is not necessary to provide a separate connector part, an increase in the number of connectors to be connected is prevented. Therefore, the connector can be easily connected.

  The invention according to claim 6 is the tank that is mounted on a vehicle and stores the cleaning liquid, and the pump device according to any one of claims 2 to 5 attached to the side wall of the tank. And a vehicle washer device for injecting the cleaning liquid onto the surface to be cleaned of the vehicle.

  According to the same configuration, by connecting an external connector on the vehicle side for supplying power by being connected to an external power source and for taking out a liquid level detection signal to the second connector portion of the pump device attached to the tank, Power can be supplied to the motor of the pump body, and the liquid level detection signal can be taken out to the outside. Therefore, the connector can be easily connected in the vehicle washer device.

  ADVANTAGE OF THE INVENTION According to this invention, the liquid level detection apparatus, pump apparatus, and vehicle washer apparatus which can perform the connection operation | work of a connector easily can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 is an overall configuration diagram of a vehicle washer device 1. As shown in FIG. 1, a vehicular washer device 1 includes a washer tank 3 installed in an engine room of a vehicle 2, a pump device 4 attached to the washer tank 3, and a cleaning liquid on a windshield 2 a of the vehicle 2. 5 (see FIG. 3), a rear nozzle 7 for injecting the cleaning liquid 5 onto the rear glass 2b of the vehicle 2, and an operation switch 8 disposed in the passenger compartment. The front nozzle 6 and the rear nozzle 7 are connected to the pump device 4 by pipes 9 and 10, respectively. In the vehicular washer device 1 of the present embodiment, the pump device 4 alternatively injects the cleaning liquid 5 from the front nozzle 6 or the rear nozzle 7 in accordance with the operation of the operation switch 8.

  As shown in FIG. 2, the synthetic resin washer tank 3 includes a tank main body 11 having a box shape opened upward, and a lid portion 12 for closing the opening of the tank main body 11. The tank body 11 disposed on the lower side in the engine room is formed by integrally forming a flat bottom portion 11a and a side wall 11b erected upward from the peripheral edge of the bottom portion 11a. On the other hand, the lid 12 has a box shape shallower than the tank main body 11, and the opening thereof has a shape corresponding to the opening of the tank main body 11. Further, an inlet (not shown) for injecting the cleaning liquid 5 (see FIG. 3) into the washer tank 3 is provided in the upper bottom portion 12a of the lid portion 12, and the inlet is provided with a removable cap 13. Is blocked. The tank body 11 and the lid portion 12 are fixed in a liquid-tight manner by heat welding or the like in a state where the openings are aligned, and the cleaning liquid 5 is stored in the space formed by the tank body 11 and the lid portion 12. Is done.

  Further, as shown in FIG. 3, a part of the side wall 11b of the tank body 11 is provided with an attachment part 11c for attaching the pump device 4, and the attachment part 11c is orthogonal to the bottom part 11a. That is, it is formed so as to be parallel to the vertical direction. Then, two openings 11d and 11e (a first opening 11d and a second opening 11e) are formed in the attachment portion 11c so as to penetrate the attachment portion 11c with a gap in the vertical direction. . Each of the openings 11d and 11e opens in a circular shape, and a second opening 11e is formed above the first opening 11d in the attachment portion 11c.

  As shown in FIG. 4, the pump device 4 includes a pump body 21 and a liquid level detection adapter 22. A pump housing 31 constituting the pump body 21 has a substantially cylindrical shape, and a first end frame 32 is fixed to a lower end thereof, and a second end frame 33 is fixed to an upper end thereof. Further, a partition wall 31 a that partitions a space in the pump housing 31 is integrally formed at a portion near the lower end of the pump housing 31. A space between the partition wall 31 a and the second end frame 33 in the pump housing 31 is a motor chamber 34, and a space between the partition wall 31 a and the first end frame 32 in the pump housing 31 is a pump chamber 35. Has been.

  In the motor chamber 34, a motor 41 capable of rotating forward and reverse is disposed. More specifically, the motor yoke 42 having a cylindrical shape of the motor 41 is fixed to the inner peripheral surface of the pump housing 31, and a permanent magnet 43 is fixed to the inner peripheral surface of the motor yoke 42. Further, an armature 44 is disposed inside the permanent magnet 43. The armature 44 has a rotating shaft 44a that is supported by a bearing (not shown) provided in the second end frame 33 and a bearing 45 disposed in a central portion in the radial direction of the partition wall 31a. While being rotatable in the chamber 34, the end of the rotating shaft 44a on the partition wall 31a side protrudes into the pump chamber 35 from the partition wall 31a. The second end frame 33 holds a plurality of power supply brushes 46 (only one is shown in FIG. 4). The power supply brushes 46 are fixed to a rotating shaft 44a and form a cylindrical shape that constitutes an armature 44. Of the commutator 44b.

  Further, a connector housing 33a is formed to protrude from the upper surface of the second end frame 33 (the surface opposite to the pump housing 31). The connector housing 33a has a substantially square cylindrical shape and extends in parallel with the rotation axis L1 of the rotation shaft 44a. A rubber O-ring 47 is fitted on the connector housing 33a. In addition, positive and negative power supply terminals 48 a and 48 b for supplying power to the armature 44 are led out inside the connector housing 33 a. FIG. 4 shows only one of the two power supply terminals 48a and 48b, but the two power supply terminals 48a and 48b are arranged side by side in the direction perpendicular to the paper surface. The two power supply terminals 48a and 48b are electrically connected to the corresponding power supply brushes 46, respectively. The power supply terminals 48a and 48b are surrounded by the connector housing 33a by protruding from the upper surface of the second end frame 33 into the connector housing 33a. The portions of the power supply terminals 48a and 48b that protrude from the upper surface of the second end frame 33 extend parallel to the rotation axis L1 of the rotation shaft 44a, and the tips of the power supply terminals 48a and 48b are the tips of the connector housing 33a. It is located in the base end side of the connector housing 33a rather than. And the connector part 49 is comprised by the connector housing 33a and electric power feeding terminal 48a, 48b. Note that the power supply terminals 48a and 48b of the present embodiment are male terminals.

  The motor 41 configured as described above rotates the rotating shaft 44a forward and backward according to the polarity of the power supply voltage supplied from the outside via the power supply terminals 48a and 48b. That is, when an external power supply voltage is applied so that one of the power supply terminals 48a and 48b has a positive potential with respect to the other power supply terminal, the motor 41 rotates forward and the one power supply terminal has the opposite polarity. When an external power supply voltage is applied so that is at a negative potential with respect to the other power supply terminal, the motor 41 rotates in the reverse direction. In the present embodiment, the power supply terminal on the negative potential side is installed in the vehicle 2 outside the pump device 4.

  An impeller 51 is accommodated in the pump chamber 35. The impeller 51 is fixed to a portion of the rotating shaft 44a protruding into the pump chamber 35 so as to be integrally rotatable. Further, a cylindrical inlet 31b is provided integrally with the pump housing 31 on the side of the pump chamber 35. The inlet 31b has a central axis L2 that is parallel to the rotation axis L1 of the rotation shaft 44a in the motor chamber 34. It extends toward the outside of the pump housing 31 so as to be orthogonal. The outer opening of the inlet 31b serves as a suction port 52 for sucking the cleaning liquid in the washer tank 3, and the suction port 52 communicates with the pump chamber 35 via a suction passage 53 that is an internal space of the inlet 31b. Has been.

  The pump housing 31 is integrally provided with a housing-side protruding portion 31c that protrudes on the opposite side to the inlet 31b with respect to the rotating shaft 44a, and the first end frame 32 includes a housing-side protruding portion. A frame-side protruding portion 32a is integrally formed so as to correspond to the protruding portion 31c. The housing-side protruding portion 31c and the frame-side protruding portion 32a that are assembled to face each other in the direction of the rotation axis L1 of the rotating shaft 44a constitute a valve chamber 54. The valve chamber 54 includes two flow channels (not shown). The pump chamber 35 communicates with the passage. Further, a first discharge portion 31d (see FIG. 2) is formed to protrude outward from the housing-side protruding portion 31c, and a first flow path 55 connected to the valve chamber 54 is formed inside the first discharge portion 31d. In addition, the tip opening of the first discharge part 31d is a first discharge port 56. Similarly, a second discharge portion 32b (see FIG. 2) is formed to protrude outward from the frame side protrusion 32a, and a second flow path 57 connected to the valve chamber 54 is formed inside the second discharge portion 32b. At the same time, the opening at the tip of the second discharge part 32 b is a second discharge port 58. A pipe 9 connected to the front nozzle 6 is connected to the tip of the first discharge part 31d, and a pipe 10 connected to the rear nozzle 7 is connected to the tip of the second discharge part 32b (see FIG. 1). .

  In addition, an annular valve seat 61 is provided in the opening on the valve chamber 54 side in the second flow path 57, and a substantially disc-like shape that is attached to and detached from the valve seat 61 in the valve chamber 54. A seal valve 62 is arranged. The seal valve 62 is urged toward the valve seat 61 by a compression coil spring 63 disposed between the outer peripheral portion of the opening on the valve chamber 54 side of the first flow path 55 and the seal valve 62, and thereby the valve seat 61. Sitting on. When the impeller 51 is rotated forward by the forward rotation of the motor 41, the seal valve 62 is maintained in the state of being seated on the valve seat 61, the pump chamber 35 and the first flow path 55 are communicated, and the reverse of the motor 41 is achieved. When the impeller 51 is reversely rotated by the rotation, the seal valve 62 is separated from the valve seat 61 (that is, separated from the valve seat 61) against the urging force of the compression coil spring 63 by water flow (water pressure), and the pump chamber 35 and the second flow path 57 are configured to communicate with each other. When the motor 41 rotates in the reverse direction, the opening on the valve chamber 54 side in the first flow path 55 is closed by the seal valve 62.

  An adapter housing 71 made of synthetic resin that constitutes the liquid level detection adapter 22 has a hollow box shape, and has a cylindrical side wall 71a and an upper wall that closes the upper and lower ends of the side wall 71a. 71b and the lower wall part 71c are integrally formed. A flat circuit board 72 is disposed in the adapter housing 71 so as to be parallel to the upper wall portion 71 b, and a control relay 73 is fixed to the lower surface of the circuit board 72. This control relay 73 is comprised from electrical components, such as the relay coil 73a and switch 73b, 73c (refer Fig.5 (a)). The circuit board 72 has a pair of liquid level detection electrodes 74a and 74b, positive and negative connection terminals 75a and 75b (FIG. 4 shows only one of the two connection terminals arranged in the direction perpendicular to the paper surface), and a power supply terminal 76. (See FIG. 2) Two input terminals 77a and 77b and a pair of output terminals 78a and 78b (see FIG. 2) are provided.

  As shown in FIG. 3, the two liquid level detection electrodes 74a and 74b are inserted into the washer tank 3 from the second opening 11e of the washer tank 3, and the liquid level of the cleaning liquid 5 in the washer tank 3 is low. It is for detecting that it became. The two liquid level detection electrodes 74a and 74b are juxtaposed in the direction perpendicular to the paper surface in FIG. 3, and their base ends are electrically connected to the circuit board 72 by solder. Each of the liquid level detection electrodes 74a and 74b extends vertically downward from the circuit board 72 and then bends at a right angle, and extends in parallel with the circuit board 72 and the upper wall 71b from the bent portion to the tip. . And the front-end | tip part of each liquid level detection electrode 74a, 74b protrudes outside the adapter housing 71 from the two protrusion holes 71e formed in the attachment surface 71d facing the said attachment part 11c in the side wall part 71a, respectively. In addition, it is perpendicular to the mounting surface 71d. The mounting surface 71d in which the protruding hole 71e is formed in the side wall portion 71a is flat, and the inner peripheral surface of the protruding hole 71e abuts on the outer peripheral surface of the liquid level detection electrodes 74a and 74b, respectively. The liquid level detection electrodes 74a and 74b are supported by 71a. The liquid level detection electrodes 74a and 74b output an ON signal (liquid level detection signal) when they are conducted by the cleaning liquid 5 in the washer tank 3, and an OFF signal ( The liquid level detection signal) is output.

  The two connection terminals 75a and 75b are connected to the power supply terminals 48a and 48b of the connector portion 49, and are arranged with respect to the circuit board 72 so as to extend downward from the circuit board 72. The substrate 72 is electrically connected to the control relay 73. And the front-end | tip part of each connection terminal 75a, 75b penetrates the lower wall part 71c of the adapter housing 71, protrudes outside the adapter housing 71, and is the cylindrical 1st formed integrally with the lower wall part 71c. It is surrounded by a connector housing 71f. The first connector housing 71f has a substantially rectangular tube shape corresponding to the outer shape of the connector housing 33a so that the connector housing 33a can be fitted therein, and extends vertically so as to be perpendicular to the circuit board 72. Further, an abutting portion 71g protruding inward is integrally formed at the upper end portion of the first connector housing 71f, and the tips of the connection terminals 75a and 75b are substantially equal to the lower end of the first connector housing 71f. Is located. The first connector housing 79f and the connection terminals 75a and 75b constitute a first connector portion 79.

  As shown in FIGS. 2 and 4, the power supply terminal 76, the input terminals 77a and 77b, and the output terminals 78a and 78b are connected to the circuit board 72 by solder at their base ends. The power terminal 76 and the input terminals 77a and 77b are electrically connected to the control relay 73 in the circuit board 72, and the output terminals 78a and 78b are electrically connected to the liquid level detection electrodes 74a and 74b in the circuit board 72, respectively. Connected. The power supply terminal 76, the input terminals 77a and 77b, and the output terminals 78a and 78b extend downward from the circuit board 72 perpendicularly to the circuit board 72, then bend at right angles, and are parallel to the circuit board 72 from the bent portion to the tip. It extends to. And the front-end | tip part of the power terminal 76, input terminal 77a, 77b, and output terminal 78a, 78b makes perpendicular | vertical to the connection surface 71h on the opposite side to the attachment surface 71d in the side wall part 71a, and is provided in this connection surface 71h. Each of the five protruding holes 71k protrudes outside the adapter housing 71. The connection surface 71h is parallel to the mounting surface 71d, and the inner peripheral surface of each projecting hole 71k and the outer peripheral surfaces of the power terminal 76, the input terminals 77a and 77b, and the output terminals 78a and 78b are in contact with each other. Thereby, the power supply terminal 76, the input terminals 77a and 77b, and the output terminals 78a and 78b are supported by the side wall 71a (connection surface 71h), respectively.

  In addition, a second connector housing 71m having a substantially rectangular tube shape is integrally formed on the connection surface 71h so as to surround the distal ends of the power terminal 76, the input terminals 77a and 77b, and the output terminals 78a and 78b. The second connector housing 80m, the power terminal 76, the input terminals 77a and 77b, and the output terminals 78a and 78b constitute a second connector portion 80. When the external connector 81 is connected to the second connector portion 80, the power terminal 76 is electrically connected to the battery B of the vehicle 2 via the external connector 81, and the input terminals 77a and 77b are operated. The switch 8 is electrically connected, and the output terminals 78a and 78b are electrically connected to a warning ECU 83 for controlling turning on / off of the warning light 82 relating to the amount of the cleaning liquid 5 (see FIG. 1). .

  As shown in FIG. 4, the pump body 21 and the liquid level detection adapter 22 configured as described above are connected to the connector part 49 of the pump body 21 and the first connector part 79 of the liquid level detection adapter 22. Thus, the pump device 4 is integrated (assembled). More specifically, the pump body 21 and the liquid level detection adapter 22 are arranged in the direction of the rotation axis L1 of the rotation shaft 44a in a state where the upper end opening of the connector housing 33a and the lower end opening of the first connector housing 71f face each other. The connector housing 33a is fitted into the first connector housing 71f, and the O-ring 47 fitted on the connector housing 33a is brought into contact with the contact portion 71g. The At the same time, the power supply terminals 48a and 48b are connected to the connection terminals 75a and 75b, respectively, so that the pump body 21 and the liquid level detection adapter 22 are integrated. The connection portion between the connector portion 49 and the first connector portion 79 is sealed by the O-ring 47 to ensure confidentiality. As shown in FIG. 3, in the integrated pump body 21 and liquid level detection adapter 22, the central axis L2 of the inlet 31b and the tip ends of the liquid level detection electrodes 74a and 74b are parallel to each other. .

  The pump device 4 is connected to the attachment portion 11c of the washer tank 3 so that the inlet 31b is inserted into the first opening 11d and the liquid level detection electrodes 74a and 74b are inserted into the second opening 11e. Attached. In the present embodiment, a first grommet 91 made of a rubber material is attached to the first opening 11d, and a second grommet 92 made of a rubber material is attached to the second opening 11e. 4 is attached to the washer tank 3 via a first grommet 91 and a second grommet 92.

  The cylindrical first grommet 91 is provided with a press-fitting hole 91a penetrating in the axial direction in the central portion in the radial direction, and the outer diameter of the first grommet and 91 is equal to or slightly equal to the inner diameter of the first opening 11d. Largely formed. In addition, a flange portion 91 b is extended from an axial end portion of the first grommet 91 that is disposed outside the washer tank 3 so as to protrude radially outward. The flange portion 91b is in contact with the outer surface of the attachment portion 11c. Further, the second grommet 92 made of rubber has a substantially cylindrical shape having two electrode insertion holes 92a penetrating in the axial direction (only one of the two electrode insertion holes arranged in the direction perpendicular to the paper surface is shown in FIG. 3). I am doing. The inner diameter of each electrode insertion hole 92a is formed slightly smaller than the outer shape of the liquid level detection electrodes 74a and 74b. Further, at both ends of the second grommet 92, retaining portions 92b and 92c having an outer diameter larger than the inner diameter of the second opening 11e are integrally formed, and the spacing between the retaining portions 92b and 92c is as follows. The thickness of the mounting portion 11c is set equal. The retaining portions 92b and 92c prevent the second grommet 92 from falling off from the second opening 11e.

  Then, the inlet 31 b is press-fitted into the press-fitting hole 91 a of the first grommet 91, whereby the suction port 52 is disposed in the washer tank 3. At the same time, the liquid level detection electrodes 74a and 74b are inserted into the electrode insertion holes 92a (liquid-tightly inserted) until the mounting surface 71d comes into contact with the outer end face of the washer tank 3 in the second grommet 92. The tip ends of the liquid level detection electrodes 74 a and 74 b are exposed in the washer tank 3. Since the inner diameter of each electrode insertion hole 92a is slightly smaller than the outer shape of the liquid level detection electrodes 74a and 74b, the inner periphery of the electrode insertion hole 92a is formed on the outer peripheral surface of each liquid level detection electrode 74a and 74b. The surfaces are in close contact with each other to ensure the liquid tightness of the washer tank 3. The first grommet 91 seals between the inlet 31b and the first opening 11d, and the second grommet 92 seals between the liquid level detection electrodes 74a and 74b and the second opening 11e. . Then, after the pump device 4 is attached to the washer tank 3, the external connector 81 is connected to the second connector portion 80.

  The protruding positions of the liquid level detection electrodes 74a and 74b in the washer tank 3 are the amounts to be replenished when the liquid level of the cleaning liquid 5 in the washer tank 3 becomes low (that is, the cleaning liquid 5 in the washer tank 3 becomes small). And the position of the liquid surface of the cleaning liquid 5 is set. Accordingly, the formation position (height with respect to the bottom 11a) of the second opening 11e in the washer tank 3 is set so that the liquid level detection electrodes 74a and 74b are arranged at the above positions.

Next, the operation of the vehicle washer device 1 configured as described above will be described.
The control relay 73 of this embodiment is configured such that the contacts of the switches 73b and 73c are switched when the input terminals 77a and 77b are grounded. As shown in FIG. 5A, the switch 73b is electrically connected to the terminal T1 electrically connected to the power supply terminal 48a via the connection terminal 75a and to the switch 8b of the operation switch 8 via the input terminal 77b. The switching terminal T2 connected and the switching terminal T3 electrically connected to the battery B via the power supply terminal 76 are connected. The switch 73c includes a terminal T4 electrically connected to the power supply terminal 48b via the connection terminal 75b, a switching terminal T5 electrically connected to the switch 8a of the operation switch 8 via the input terminal 77a, and One of the switching terminals T6 electrically connected to the battery B is connected to the battery B through the power terminal 76. The operation switch 8 is configured such that the switch 8a is closed when operated to inject the cleaning liquid 5 onto the windshield 2a, and the switch 8b is closed when operated to inject the cleaning liquid 5 onto the rear glass 2b. (See FIG. 1). In a normal state in which the vehicle washer device 1 is not operated, the switch 73b connects the terminal T1 and the switching terminal T3, and the switch 73c connects the terminal T4 and the switching terminal T5. .

  When the operation switch 8 is operated to inject the cleaning liquid 5 onto the windshield 2a from the normal state and the switch 8a is closed, the power is supplied via the power terminal 76, the switching terminal T3 and the terminal T1 of the switch 73b, and the connection terminal 75a. A voltage is applied to the power supply terminal 48 a of the motor 41. On the other hand, the power feeding terminal 48b is grounded via the connection terminal 75b, the terminal T4 of the switch 73c, the switching terminal T5, and the switch 8a. Thereby, a closed circuit for rotating the motor 41 forward is formed, and the motor 41 rotates forward. When the motor 41 is rotated forward and the impeller 51 is rotated forward, the cleaning liquid 5 is sucked into the pump chamber 35 from the suction port 52 through the suction passage 53 by the forward rotation of the impeller 51. As shown in FIGS. 1 and 3, when the cleaning liquid 5 is sucked by the forward rotation of the impeller 51, the seal valve 62 maintains a seated state, and the pump chamber 35 and the first flow path 55 are connected to the valve chamber. 54, the cleaning liquid 5 in the pump chamber 35 is jetted from the front nozzle 6 to the windshield 2a through the first flow path 55, the first discharge port 56, and the pipe 9.

  On the other hand, as shown in FIG. 5B, when the operation switch 8 is operated to inject the cleaning liquid 5 onto the rear glass 2b and the switch 8b is closed, the battery B is connected to the power terminal 76, the relay coil 73a, the input terminal 77b, It is grounded via the switch 8b. Thereby, a current flows through the relay coil 73a, and the contacts of the switches 73b and 73c are switched. That is, the switch 73b connects the terminal T1 and the switching terminal T2, and the switch 73c connects the terminal T4 and the switching terminal T6. Then, the power supply voltage is applied to the power supply terminal 48b via the power supply terminal 76, the switching terminal T6, the terminal T4, and the connection terminal 75b. On the other hand, the power supply terminal 48a is grounded via the connection terminal 75a, the terminal T1, the switching terminal T2, the input terminal 77b, and the switch 8b. Thereby, a closed circuit for reversely rotating the motor 41 is formed, and the motor 41 rotates reversely. When the motor 41 rotates in the reverse direction and the impeller 51 rotates in the reverse direction, the cleaning liquid 5 is sucked into the pump chamber 35 from the suction port 52 through the suction passage 53 by the reverse rotation of the impeller 51. As shown in FIGS. 1 and 3, when the cleaning liquid 5 is sucked by the reverse rotation of the impeller 51, the seal valve 62 is separated from the pump chamber 35 and the second flow path 57 through the valve chamber 54. The cleaning liquid 5 in the pump chamber 35 is jetted from the rear nozzle 7 to the rear glass 2b through the second flow path 57, the second discharge port 58, and the pipe 10.

  When the remaining amount of the cleaning liquid 5 in the washer tank 3 is sufficient, that is, when the cleaning liquid 5 in the washer tank 3 is larger than the amount to be replenished, the liquid level of the cleaning liquid 5 is a pair of liquid level detection electrodes. It is higher than 74a and 74b. Accordingly, since the two liquid level detection electrodes 74a and 74b are made conductive by the cleaning liquid 5, the liquid level detection electrodes 74a and 74b are turned on to indicate that the remaining amount of the cleaning liquid 5 is sufficient via the output terminals 78a and 78b. Is output to the warning ECU 83. The warning ECU 83 turns off the warning lamp 82 when the ON signal is input.

  On the other hand, when the vehicle washer device 1 is used and the amount of the cleaning liquid 5 in the washer tank 3 decreases and the liquid level of the cleaning liquid 5 becomes low (for example, the state illustrated by the two-dot chain line in FIG. 3), the cleaning liquid 5, the liquid level detection electrodes 74a and 74b are exposed, and the conduction between the two liquid level detection electrodes 74a and 74b is interrupted. When the conduction between the liquid level detection electrodes 74a and 74b is interrupted, the liquid level detection electrodes 74a and 74b output an OFF signal indicating that the cleaning liquid 5 should be replenished to the warning ECU 83 via the output terminals 78a and 78b. The warning ECU 83 keeps the warning lamp 82 lit when the OFF signal is input.

As described above, the present embodiment has the following effects.
(1) By connecting the connector part 49 of the pump body 21 and the first connector part 79 of the liquid level detection adapter 22, the pump body 21 and the liquid level detection adapter 22 can be assembled. Further, by connecting the connector part 49 and the first connector part 79, the positional relationship between the inlet 31b of the pump body 21 and the liquid level detection electrodes 74a and 74b forming a pair with the liquid level detection adapter 22 is determined. . Accordingly, in the pump device 4 formed by assembling the pump body 21 and the liquid level detection adapter 22, the inlet 31b is inserted into the first opening 11d and the liquid level detection electrodes 74a and 74b are inserted into the second opening 11e. When attached to the attachment portion 11c of the washer tank 3, the level of the cleaning liquid 5 in the washer tank 3 can be detected in a predetermined positional relationship with respect to the inlet 31b. Further, a power level terminal 76 connected to the battery B to supply power to the motor 41 and output terminals 78a and 78b for outputting an ON signal or an OFF signal according to the conduction state of the liquid level detection electrodes 74a and 74b detect the liquid level. The input terminals 77 a and 77 b connected to the operation switch 8 are also integrated into the second connector unit 80 while being integrated into the second connector unit 80 of the adapter 22. Therefore, by connecting the external connector 81 to the second connector portion 80, it is possible to supply power to the motor 41 and output the ON signal and OFF signal to the warning ECU 83, and according to the operation of the operation switch 8. The pump body 21 can be operated. This eliminates the need for an external connector or the like connected to the pump main body 21 to supply power to the motor 41, thereby reducing the number of connectors to be connected. As a result, the connection work of the external connector 81 can be easily performed.

  (2) The two liquid level detection electrodes 74a and 74b are inserted into the two electrode insertion holes 92a provided in the rubber-made second grommet 92 in a liquid-tight manner, respectively. Accordingly, the leakage of the cleaning liquid 5 from between the liquid level detection electrodes 74a and 74b and the second grommet 92 is prevented. Further, since the gap between the liquid level detection electrodes 74a and 74b and the second opening 11e is sealed by the second grommet 92, the cleaning liquid 5 from between the liquid level detection electrodes 74a and 74b and the second opening 11e is sealed. Liquid leakage is prevented.

  (3) The control relay 73 for switching the polarity of the power supply voltage supplied to the motor 41 is disposed in the adapter housing 71 of the liquid level detection adapter 22, and the power supply terminal 76 is connected to the connection terminals 75 a and 75 b via the control relay 73. Connected with. Accordingly, even when the pump body 21 configured to discharge the cleaning liquid 5 from either one of the first discharge port 56 and the second discharge port 58 according to the rotation direction of the motor 41 is used. Since the pump body 21 or the liquid level detection adapter 22 does not have to be provided with a separate connector portion, an increase in the number of connectors to be connected is prevented. Therefore, the connection work of the external connector 81 can be easily performed.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the pump main body 21 is configured to alternatively discharge the cleaning liquid 5 from one of the two discharge ports 56 and 58 according to the rotation direction of the motor 41. . However, the pump main body 21 may include a motor that is rotated only in one direction and a single discharge port. In this case, the liquid level detection adapter 22 does not include the control relay 73, and the connection terminal 75 a and the power supply terminal 76 are directly connected to the circuit board 72.

  In the above embodiment, the control relay 73 including the relay coil 73a and the switches 73b and 73c is used as a polarity switching circuit that switches the polarity of the power supply voltage supplied to the motor 41. However, the polarity switching circuit may be configured using an FET (Field-effect Transistor).

  In the above embodiment, the paired liquid level detection electrodes 74 a and 74 b are inserted into the second opening 11 e through the second grommet 92. However, the second grommet 92 may be omitted if the liquid tightness between the liquid level detection electrodes 74a and 74b and the second opening 11e is ensured.

  In the above embodiment, the paired liquid level detection electrodes 74a and 74b are supported by the side wall portion 71a by projecting from the projection hole 71e provided in the side wall portion 71a to the outside of the adapter housing 71, respectively. That is, the side wall 71a is an electrode support that supports the liquid level detection electrodes 74a and 74b. However, the configuration of the electrode support portion is not limited to this. For example, the electrode support portion 101 shown in FIG. 6 has a shape protruding from the mounting surface 71d to the outside of the adapter housing 71. Specifically, the electrode support portion 101 has a cylindrical shape whose central axis L3 is orthogonal to the mounting surface 71d. The pair of liquid level detection electrodes 74 a and 74 b are supported by the electrode support portion 101 in a state in which the tip portions of the liquid level detection electrodes 74 a and 74 b are exposed from the tip surface of the electrode support portion 101. Note that the tip side portions of the liquid level detection electrodes 74 a and 74 b are supported so as to be parallel to the central axis L <b> 3 of the electrode support portion 101. Further, the liquid level detection electrodes 74a and 74b are configured to be supported by the electrode support portion 101 by insert molding, and the liquid tightness between the electrode support portion 101 and the liquid level detection electrodes 74a and 74b is ensured. It is secured. When the liquid level detection electrodes 74a and 74b are inserted into the second opening 11e, a substantially cylindrical second grommet 102 is interposed between the second opening 11e and the electrode support 101, The second grommet 102 seals between the electrode support portion 101 and the second opening 11e. Thus, the drag force acting from the second grommet 92 attached to the washer tank 3 when the liquid level detection electrodes 74a and 74b are inserted into the second opening 11e can be received by the electrode support portion 101. As a result, the drag acts on the electrical connection portions of the liquid level detection electrodes 74a and 74b (that is, the portion where the base ends of the liquid level detection electrodes 74a and 74b and the circuit board 72 are connected by solder). It is suppressed. In addition, since the electrode support portion 101 has a shape protruding outward from the adapter housing 71, the liquid level detection electrodes 74a and 74b can be supported over a wider range in the longitudinal direction of the liquid level detection electrodes 74a and 74b. Therefore, each liquid level detection electrode 74a, 74b can be supported more firmly.

  As shown in FIG. 7, a stopper 111 may be provided on the liquid level detection electrodes 74a and 74b. More specifically, the mounting surface 71d is integrally provided with an electrode support 112 protruding outward from the mounting surface 71d. The electrode support portion 112 has a cylindrical shape, and its central axis L4 is orthogonal to the mounting surface 71d. The liquid level detection electrodes 74a and 74b pass through the electrode support portion 112 so that the tip side portions are parallel to the central axis L4, and the tip portion protrudes from the tip portion of the electrode support portion 112. Supported by part 112. The stopper 111 provided integrally with the liquid level detection electrodes 74 a and 74 b is formed to project from the outer peripheral surface of each liquid level detection electrode 74 a and 74 b in a bowl shape, and abuts against the tip surface of the electrode support portion 112. ing. The second grommet 92 is formed with an accommodating recess 92d corresponding to the electrode support 112 and the stopper 111. When the liquid level detection electrodes 74a and 74b are inserted into the electrode insertion hole 92a in a liquid-tight manner, the electrodes The support portion 112 and the stopper 111 are housed in the housing recess 92d. In this way, when the liquid level detection electrodes 74a and 74b are inserted into the electrode insertion holes 92a of the second grommet 92, a part of the drag acting on the liquid level detection electrodes 74a and 74b from the second grommet 92 side is stopped. 111 and the electrode support 112. Therefore, the drag acts on the electrical connection portion between the liquid level detection electrodes 74a and 74b and the circuit board 72 (that is, the portion where the base ends of the liquid level detection electrodes 74a and 74b and the circuit board 72 are connected by solder). Is suppressed.

  In the above embodiment, the paired liquid level detection electrodes 74a and 74b are arranged in parallel in the horizontal direction. However, if the liquid level detection electrodes 74a and 74b are spaced apart from each other, the positional relationship between the liquid level detection electrodes 74a and 74b Is not limited to this. For example, the liquid level detection electrodes 74a and 74b that make a pair may be arranged at intervals in the vertical direction. In general, when the liquid level is in the vicinity of the liquid level detection electrode, if the liquid level is shaken by vibration or the like, so-called chattering in which a conductive state and a non-conductive state are repeated between the pair of liquid level detection electrodes may occur. is there. However, if the pair of liquid level detection electrodes 74a and 74b are arranged in the vertical direction in this way, this chattering can be suppressed.

  In the above embodiment, the liquid level detection adapter 22 includes a pair of liquid level detection electrodes 74a and 74b. However, a plurality of pairs of liquid level detection electrodes may be included. In this case, the output terminals 78a and 78b constituting the second connector portion 80 are also increased according to the number of liquid level detection electrodes. For example, the warning ECU 83 is configured to turn on the warning lamp 82 when all the liquid level detection electrodes that form a pair output an OFF signal via the output terminal.

-By adding a circuit element such as a coil to the circuit board 72, an EMC (electromagnetic environment compatibility) function can be easily added.
In the above embodiment, the pump device 4 is provided in the vehicle washer device 1 that sucks the cleaning liquid 5 in the washer tank 3 mounted on the vehicle 2 and injects the cleaning liquid 5 onto the windshield 2a or the rear glass 2b. . However, the pump device 4 may be provided in a device other than the vehicle washer device 1 as long as it is a device that sucks and injects the liquid in the tank.

The technical ideas that can be grasped from each of the above embodiments and each of the above modifications are described below.
(A) In the pump device according to claim 3, the liquid level detection electrode includes a stopper that is formed to protrude from an outer peripheral surface of the liquid level detection electrode and is in contact with a front end surface of the electrode support portion. Pump device to do. According to this configuration, when the liquid level detection electrode is inserted into the second opening, a part of the drag acting on the liquid level detection electrode from the tank side can be received by the stopper and the electrode support part. Accordingly, the drag is suppressed from acting on the electrical connection portion of the liquid level detection electrode.

1 is a schematic view of a vehicle including a vehicle washer device. The front view of the washer tank with which the pump apparatus was attached. The fragmentary sectional view of the washer device for vehicles. The exploded sectional view of a pump device. (A) And (b) is an electrical block diagram of the vehicle washer apparatus. The fragmentary sectional view of the liquid level detection adapter of another form. The fragmentary sectional view of the liquid level detection adapter of another form.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Vehicle, 3 ... Washer tank as tank, 4 ... Pump device, 2a ... Front glass as surface to be cleaned, 2b ... Rear glass as surface to be cleaned, 5 ... Cleaning liquid as liquid, 11b ... Side wall of tank, 11d DESCRIPTION OF SYMBOLS 1st opening part, 11e ... 2nd opening part, 21 ... Pump main body, 22 ... Liquid level detection adapter as a liquid level detection apparatus, 31b ... Inlet as suction | inhalation part, 34 ... Motor chamber, 35 ... Pump chamber, 41 DESCRIPTION OF SYMBOLS Motor, 48a, 48b ... Feed terminal, 49 ... Connector part, 51 ... Impeller, 56 ... First discharge port as discharge port, 58 ... Second discharge port as discharge port, 71 ... Adapter housing, 71a ... Electrode support Side wall part as part, 71f ... 1st connector housing, 71m ... 2nd connector housing, 73 ... Control relay as polarity switching circuit, 74a, 74b ... Liquid Detection electrode, 75a, 75b ... connection terminal, 76 ... power supply terminal, 78a, 78b ... output terminal, 79 ... first connector part, 80 ... second connector part, 81 ... external connector, 92 ... second grommet as grommet, 92a ... Electrode insertion hole, 101, 112 ... Electrode support, B ... Battery as an external power source.

Claims (6)

The liquid level of the liquid is adjusted with respect to a tank having a side wall in which a first opening is formed and a second opening is formed above the first opening and in which liquid is stored. At least a pair of liquid level detection electrodes for detection is attached so as to protrude into the tank from the second opening, and a liquid level detection signal corresponding to a conduction state between the pair of liquid level detection electrodes is output. A liquid level detecting device,
A power supply terminal for supplying power to the pump main body provided integrally with the pump main body in which the suction portion is inserted into the first opening and the liquid in the tank is sucked from the suction portion and discharged from the discharge port is derived. A first connector part connected to the connector part and having a connection terminal connected to the power feeding terminal by connection with the connector part;
An electrode support for supporting the liquid level detection electrodes forming a pair;
A power supply terminal connected to the connection terminal; and an output terminal connected to the liquid level detection electrode forming a pair to output the liquid level detection signal; and connecting the power supply terminal to an external power source and the liquid level A second connector portion to which an external connector for taking out a detection signal is connected;
A liquid level detection device comprising: A pump device attached to the side wall of the tank in a state in which a suction part for sucking liquid in the tank is inserted into the tank from a first opening formed in the side wall of the tank,
A motor unit disposed in a motor chamber; an impeller disposed in a pump chamber and rotated by the motor; and a connector unit having a power supply terminal for supplying power to the motor; A pump body for discharging the liquid sucked into the pump chamber from a discharge port;
The tank from the first connector part provided with a connection terminal connected to the power supply terminal by connection with the connector part, and the second opening part formed above the first opening part in the side wall of the tank A liquid level detection signal corresponding to a conduction state between the electrode level supporting electrode supporting at least a pair of liquid level detection electrodes protruding inward, a power supply terminal connected to the connection terminal and the liquid level detection electrode forming a pair; A liquid level detection adapter having an output terminal for outputting, and having a second connector portion to which the power supply terminal is connected to an external power source and an external connector for taking out the liquid level detection signal is connected;
A pump device comprising: The pump device according to claim 2,
The liquid level detection adapter includes an adapter housing in which a first connector housing that surrounds the connection terminal, a second connector housing that surrounds the output terminal and the power supply terminal, and the electrode support portion are integrally formed. And
The electrode support portion has a shape protruding outward from the adapter housing,
The pump device, wherein the liquid level detection electrodes forming a pair are supported by the electrode support portions in a state where the front end portions of the liquid level detection electrodes are exposed from the front end portions of the electrode support portions. The pump device according to claim 2 or claim 3,
The liquid level detection electrode is liquid-tightly inserted into an electrode insertion hole formed through a grommet made of a rubber material, and is inserted into the second opening through the grommet. . The pump device according to any one of claims 2 to 4,
The liquid level detection adapter includes a polarity switching circuit for switching the polarity of a power supply voltage supplied to the motor, and includes the two connection terminals connected to the power supply terminal via the polarity switching circuit,
The pump body includes two discharge ports, the motor that rotates forward and backward according to the polarity of the supplied power supply voltage, and the two power supply terminals. The pump device according to claim 1, wherein the liquid sucked into the pump chamber is discharged from one of the two discharge ports in accordance with a rotation direction of the rotating impeller.   A surface to be cleaned of the vehicle, comprising: the tank mounted on the vehicle and storing the cleaning liquid; and the pump device according to any one of claims 2 to 5 attached to the side wall of the tank. The vehicle washer device is characterized in that the cleaning liquid is sprayed onto the vehicle.

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