JP7207206B2 - In-vehicle sensor cleaning device - Google Patents

Description

The present invention relates to an in-vehicle sensor cleaning device.

Conventionally, some vehicles are equipped with an on-board sensor and an on-board sensor cleaning device. For example, an in-vehicle sensor cleaning device disclosed in Patent Document 1 includes a movable nozzle having an injection port, a motor as a driving source for moving the movable nozzle, and a pump for supplying fluid to the movable nozzle. In such an in-vehicle sensor cleaning device, when the cleaning target surface of the in-vehicle sensor is cleaned by injecting the fluid from the injection port to the cleaning target surface, the movable nozzle is moved to change the position of the injection port, thereby cleaning the cleaning target. It is possible to clean a wide area of the surface appropriately.

JP 2019-43270 A

The present inventors have studied how to achieve efficient cleaning of the surface to be cleaned in the on-vehicle sensor cleaning apparatus as described above.
SUMMARY OF THE INVENTION An object of the present invention is to provide an in-vehicle sensor cleaning apparatus capable of efficiently cleaning a surface to be cleaned.

An in-vehicle sensor cleaning device that solves the above problems comprises a movable nozzle (32) having an injection port (32a), a motor (M) as a drive source for moving the movable nozzle, and a pump that supplies fluid to the movable nozzle. (22), wherein the movable nozzle is moved to change the position of the injection port, and the fluid is injected from the injection port to the cleaning target surface (12) of the vehicle-mounted sensor (11) to In the on-vehicle sensor cleaning device for cleaning a surface to be cleaned, the movable nozzle is moved such that the injection port stops at a preset stop position.

According to this configuration, the stop position of the injection port, that is, the next cleaning start position can be set in advance, so that the surface to be cleaned can be efficiently cleaned.

1 is a schematic configuration diagram of a sensor system including an in-vehicle sensor cleaning device according to an embodiment; FIG. The schematic block diagram of the nozzle unit in the same form. The schematic diagram which shows the circuit structure containing a contact plate and each contact plate in the same form. (a) A schematic diagram showing an operation mode of a contact plate and each contact pin, (b) A timing chart for explaining an operation mode of an in-vehicle sensor cleaning device. The front view of the vehicle-mounted sensor washing|cleaning apparatus in the example of a change. The schematic diagram which shows the sensor part in the example of a change. The schematic block diagram which shows the nozzle unit in the example of a change.

An embodiment of a sensor system including an in-vehicle sensor cleaning device will be described below.
As shown in FIG. 1, the sensor system 10 of the present embodiment includes a vehicle-mounted sensor 11 and a vehicle-mounted sensor cleaning apparatus for cleaning an optical surface 12 integrally provided with the vehicle-mounted sensor 11 and serving as a surface to be cleaned of the vehicle-mounted sensor 11. 20.

The in-vehicle sensor 11 of the present embodiment is, for example, a LIDAR that emits an infrared laser and receives scattered light reflected from the object to measure the distance to the object, and has an optical surface 12 through which the laser can pass. The in-vehicle sensor 11 measures the distance to an object using, for example, an infrared laser, outputs the information to an external device, and can be used for an automatic braking system or the like. In the following description, the optical surface 12 side of the in-vehicle sensor 11 is defined as the front side, and the opposite side is defined as the rear side.

The in-vehicle sensor cleaning device 20 includes a nozzle unit 21 stacked above the in-vehicle sensor 11 and a pump 22 for supplying fluid such as air to the nozzle unit 21 . The in-vehicle sensor cleaning device 20 also includes a control section 23 that controls the nozzle unit 21 and the in-vehicle sensor 11 .

The nozzle unit 21 includes a housing 31 fixed above the in-vehicle sensor 11, a movable nozzle 32 partially exposed from the housing 31, and a motor M provided inside the housing 31. . The nozzle unit 21 also has a cover 33 that covers the front side of the movable nozzle 32 (the front side of the paper surface in FIG. 1). The cover 33 is fixed to the housing 31 and constitutes a part of the housing 31 .

The movable nozzle 32 has an injection port 32a for injecting the air supplied from the pump 22 toward the optical surface 12, and is provided rotatably about an axis L1 along a direction intersecting the optical surface 12 to inject air. The orientation of the port 32a, that is, the direction of air injection can be changed. The motor M is drivingly connected to the movable nozzle 32 and is capable of driving, that is, rotating the movable nozzle 32 .

The pump 22 has a pump motor (not shown) as a drive source. The pump 22 sends the compressed air to the movable nozzle 32 of the nozzle unit 21 by electrically driving the pump motor.

Next, the details of the driving mechanism of the movable nozzle 32 will be described.
As shown in FIG. 2 , the nozzle unit 21 has a crank mechanism 34 that converts rotary motion into reciprocating linear motion on a drive transmission path from the motor M to the movable nozzle 32 .

The crank mechanism 34 includes a gear 35 that rotates in one direction based on the drive of the motor M, a rod member 36 that is connected to the gear 35 at one end, and a slider member 37 that is connected to the other end of the rod member 36. have

The gear 35 is composed of a spur gear. Note that the gear 35 is connected to the motor M via a reduction section 38 . One end of a rod member 36 is connected to one axial end face of the gear 35 . A contact plate 40 , which will be described later, is fixed to the other end surface of the gear 35 in the axial direction so as to be integrally rotatable with the gear 35 .

One end of a slider member 37 is connected to the other end of the rod member 36 . The slider member 37 is supported by a linear guide member 39 and is capable of reciprocating linear movement along the guide member 39 .

In the above-described crank mechanism 34, when the gear 35 is driven to rotate based on the drive of the motor M, the rotational driving force is transmitted to the slider member 37 via the rod member 36, thereby causing the slider member 37 to move toward the guide member. 39 for reciprocating linear motion.

A tooth portion 37 a provided on the surface of the slider member 37 meshes with a pinion gear portion 32 b formed on the movable nozzle 32 . As a result, the movable nozzle 32 reciprocates about the axis L1 by reciprocating linear motion of the slider member 37 . By the reciprocating rotation of the movable nozzle 32, the orientation of the ejection port 32a of the movable nozzle 32 reciprocates within a predetermined angle range (hereinafter referred to as an ejection range H) (see FIG. 1).

As shown in FIG. 1, the ejection range H is desirably configured to include the entire optical surface 12 . The first end Ha, which is one folded end of the injection range H, is positioned at a position corresponding to the first end 12a in the width direction of the optical surface 12 (that is, the air is injected to the first end 12a of the optical surface 12). possible positions). Similarly, the second end Hb, which is the other folded end of the ejection range H, is located at a position corresponding to the second end 12b in the width direction of the optical surface 12 (that is, at the second end 12b of the optical surface 12). position where air can be injected).

Here, when the gear 35 rotates at a constant speed, the speed of the slider member 37 that reciprocates linearly changes in a sinusoidal manner. Specifically, the speed of the slider member 37 is the slowest at the turn-back position of the reciprocating motion (that is, the position where the reciprocating motion is switched) and the fastest at an intermediate position between the turn-back positions. Therefore, the speed of reciprocating rotation of the movable nozzle 32 is also slowest when the injection port 32a faces the turned-back ends (first end Ha and second end Hb) of the injection range H. points toward the center position Hc of the injection range H (see FIG. 1). Also, due to the motion conversion characteristics of the crank mechanism 34, the movable nozzle 32 rotates with higher torque as it rotates at a lower speed. That is, the movable nozzle 32 is rotated so that the lower the speed and the higher the torque, the closer to the turn-back position of the reciprocating rotation.

As shown in FIG. 2, the nozzle unit 21 includes a contact plate that rotates integrally with the gear 35 as a mechanism for stopping the injection port 32a at either the first end Ha or the second end Hb of the injection range H. 40 and three contact pins 41 , 42 , 43 that are slidably contactable with the contact plate 40 . In this embodiment, the contact plate 40 and the contact pins 41, 42, 43 constitute a sensor section for detecting the position of the injection port 32a.

As shown in FIG. 3, the contact plate 40 has a substantially annular plate shape. A pair of notches (a first notch 44a and a second notch 44b) are formed in the outer peripheral edge of the contact plate 40. As shown in FIG. The first notch 44 a is formed at a position corresponding to the first end Ha of the injection range H in the circumferential direction of the contact plate 40 . The second notch 44b is formed at a position corresponding to the second end Hb of the injection range H in the circumferential direction of the contact plate 40 .

A first protrusion 45a that protrudes radially inward from the inner peripheral edge of the contact plate 40 is formed inside the first notch 44a in the radial direction. That is, the first protrusion 45a is formed at a position corresponding to the first end Ha of the injection range H in the circumferential direction of the contact plate 40 .

Similarly, a second protrusion 45b that protrudes radially inward from the inner peripheral edge of the contact plate 40 is formed inside the second notch 44b in the radial direction. That is, the second protrusion 45b is formed at a position corresponding to the second end Hb of the injection range H in the circumferential direction of the contact plate 40 .

Each contact pin 41 , 42 , 43 is provided so as to be slidably contactable with the contact plate 40 . The contacts 41a, 42a, 43a of the contact pins 41, 42, 43 are arranged along the radial direction of the contact plate 40, and the contacts 41a of the first contact pin 41 and the contacts 41a of the second contact pin 42 are arranged from the radially outer side to the inner side. The contact 42a and the contact 43a of the third contact pin 43 are arranged in this order.

Specifically, the contact 41 a of the first contact pin 41 is set at a position corresponding to each of the notches 44 a and 44 b near the outer periphery of the contact plate 40 .
A contact 42 a of the second contact pin 42 is set at a position near the inner peripheral edge of the contact plate 40 . The contact 42 a of the second contact pin 42 is always in contact with the contact plate 40 regardless of the rotational position of the contact plate 40 .

The contact 43a of the third contact pin 43 is set inside the inner peripheral edge of the contact plate 40, and is configured to contact only the projections 45a and 45b of the contact plate 40. As shown in FIG.

The first contact pin 41 is connected to the positive side terminal of the motor M. As shown in FIG. A negative terminal of the motor M is grounded. Also, the first contact pin 41 is connected to a vehicle battery 47 via an activation relay 46 . The second contact pin 42 is connected with the vehicle battery 47 . Since the second contact pin 42 is always connected to the contact plate 40, the potential of the contact plate 40 is always the battery potential. The third contact pin 43 is connected with the controller 23 .

The voltage of the vehicle battery 47 is supplied to the motor M via the first contact pins 41, thereby driving the motor M. As shown in FIG. Then, the crank mechanism 34 including the gear 35 operates based on the drive of the motor M, and the movable nozzle 32 reciprocates.

Here, the pair of the first notch 44a and the first protrusion 45a and the pair of the second notch 44b and the second protrusion 45b of the contact plate 40 are formed at both ends of the return of the reciprocating rotation of the injection port 32a ( That is, they are provided at positions corresponding to the first end Ha and the second end Hb) of the injection range H, respectively. Specifically, when the injection port 32a faces the first end Ha of the injection range H, the first notch 44a overlaps the contact 41a of the first contact pin 41, and the first projection 45a extends toward the third contact pin 43. is configured to overlap with the contact 43a of the . Further, when the injection port 32a faces the second end Hb of the injection range H, the second notch 44b overlaps the contact 41a of the first contact pin 41, and the second protrusion 45b overlaps the third contact pin 43. It is configured to overlap with the contact 43a. As a result, when the injection port 32a faces the first end Ha and the second end Hb of the injection range H, the contact plate 40 is not electrically connected to the first contact pin 41 and the third contact pin 43 is in a conducting state.

Next, the operation and effects of the nozzle unit 21 configured as described above will be described.
As shown in FIGS. 4A and 4B, in the stopped state S1 of the motor M, the start relay 46 is turned off and the first contact pin 41 is made non-conductive to the contact plate 40. be. That is, in the stopped state S1 of the motor M, the angular position of the gear 35 is such that the first notch 44a of the contact plate 40 overlaps the contact 41a of the first contact pin 41. As shown in FIG. Therefore, in the stopped state S1 of the motor M, the injection port 32a of the movable nozzle 32 faces the first end Ha of the injection range H. As shown in FIG.

The control unit 23 drives the pump 22 and turns on the start relay 46 based on the drive command for the nozzle unit 21 . When the activation relay 46 is turned on, the first contact pin 41 is electrically connected to the vehicle battery 47 . As a result, the battery voltage is supplied to the motor M to start rotating the motor M and the movable nozzle 32, and the orientation of the injection port 32a moves from the first end Ha toward the second end Hb. An example of the drive command for the nozzle unit 21 is a drive command based on detection of foreign matter such as raindrops or mud on the optical surface 12 .

After the motor M starts to drive, the contact 41 a of the first contact pin 41 does not overlap the first notch 44 a of the contact plate 40 due to the rotation of the gear 35 , and the first contact pin 41 is electrically connected to the contact plate 40 .

After that, the third contact pin 43 is brought out of contact with the first protrusion 45a of the contact plate 40, thereby turning off the feedback signal FB output from the third contact pin 43 to the control unit 23. Then, the control unit 23 turns off the activation relay 46 based on the turn-off of the feedback signal FB. At this time, since the first contact pin 41 is electrically connected to the vehicle battery 47 through the contact plate 40 and the second contact pin 42, the driving state of the motor M is maintained. In addition, in FIGS. 4A and 4B, the drive state at this time is shown as S2. In the drive state S2, the orientation of the injection port 32a is moved from the first end Ha side of the injection range H toward the second end Hb side.

After that, the second protrusion 45b of the contact plate 40 comes into contact with the contact 43a of the third contact pin 43 (S3). At this time, the contact between the third contact pin 43 and the second projecting portion 45b turns on the feedback signal FB output from the third contact pin 43 to the control section 23 . Then, the controller 23 stops driving the pump 22 based on the turn-on of the feedback signal FB.

After that, the second notch 44b of the contact plate 40 overlaps the contact 41a of the first contact pin 41, and the first contact pin 41 is disconnected from the contact plate 40. As shown in FIG. As a result, power supply to the motor M is stopped, and the drive of the motor M is stopped, resulting in a stopped state S4. That is, in the stopped state S4, the injection port 32a of the movable nozzle 32 faces the second end Hb of the injection range H. As shown in FIG.

According to the above aspect, the orientation of the injection port 32a moves from the first end Ha of the injection range H to the second end Hb. Further, in the stopped state S4, when the start relay 46 is turned on, the direction of the injection port 32a moves from the second end Hb of the injection range H to the first end Ha of the injection range H as in the above-described mode. and returns to the stop state S1.

Effects of the present embodiment will be described.
(1) The stop position of the injection port 32a is preset at a position facing the first end Ha of the injection range H and a position facing the second end Hb of the injection range H. Therefore, since the cleaning start position is the first end Ha or the second end Hb of the injection range H, the time required to clean the entire injection range H can be shortened, and the optical surface 12 can be cleaned efficiently. becomes possible. As a result, the optical surface 12 of the in-vehicle sensor 11 can be quickly restored to a normal state, and the reliability of the sensor system 10 can be improved.

(2) A contact plate 40 and contact pins 41, 42 and 43 are provided as a sensor for detecting the position of the injection port 32a. Then, based on the detection of the position of the injection port 32a by the contact plate 40 and the contact pins 41, 42, 43, the injection port 32a is stopped at a position facing the first end Ha or the second end Hb. Thus, a simple circuit configuration using the contact plate 40 and the contact pins 41, 42, 43 can set the stop position of the injection port 32a.

(3) The control unit 23 stops driving the pump 22 based on the detection of the position of the injection port 32a. This makes it possible to stop the pump 22 at a suitable timing based on the position of the injection port 32a.

(4) Before stopping the injection port 32a at the position facing the first end Ha and the position facing the second end Hb, the power supply to the pump 22 is stopped to stop the pump 22 from being driven. In general, the fall time of the pump 22 (that is, the time from when power supply is stopped until the supply of air is completely finished) is longer than the fall time of the motor M. Therefore, by stopping the power supply to the pump 22 before the rotation of the movable nozzle 32 is stopped, the timing of stopping the supply of air from the pump 22 to the movable nozzle 32 and the timing of stopping the rotation of the movable nozzle 32 may be different. can be kept to a minimum. Therefore, it is possible to minimize the situation where air is wasted from the injection port 32a after the rotation of the movable nozzle 32 is stopped.

(5) Since the stop position of the injection port 32a, that is, the next cleaning start position is set at the turn-back position of the reciprocating motion, in the next cleaning, the entire injection range H can be injected in one forward motion. Become.

(6) A crank mechanism 34 for converting rotation of the motor M into reciprocating rotation of the movable nozzle 32 is provided. The crank mechanism 34 rotates the movable nozzle 32 so that the lower the speed and the higher the torque, the closer the return position of the reciprocation (that is, the closer the injection port 32a is to the first end Ha and the second end Hb of the injection range H). Rotate. According to this aspect, since the movable nozzle 32 is driven with a high torque at the start of cleaning, the movable nozzle 32 can be stably driven even when frozen.

Further, due to the function of the crank mechanism 34, the speed of the movable nozzle 32 at the start of cleaning from the first end Ha or the second end Hb of the injection range H becomes low. This makes it possible to reduce the amount of movement of the injection port 32a during the rising period of the pump 22 at the start of cleaning. Therefore, even if the timing of starting the motor M and the starting of the pump 22 is set to be the same without setting the waiting time for starting the motor M with respect to the starting of the pump 22, there is a range in which air is not injected immediately after the start of cleaning. It can be kept as narrow as possible.

This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range. In the following description, the same reference numerals as in the above embodiment indicate the same configurations, and the preceding description is referred to.

As shown in FIG. 5, the cover 33 forming part of the housing 31 that accommodates the movable nozzle 32 has a facing portion 51 that faces the injection port 32a at the stop position in the direction of the injection axis. ing. Note that the injection port 32a in the example shown in FIG. 5 reciprocates within a range of approximately 180 degrees in the circumferential direction of the movable nozzle 32, and the stop positions of the injection port 32a are set at both ends of the turn of the reciprocating motion. It is That is, two opposing portions 51 are provided corresponding to each stop position of the injection port 32a.

Each facing portion 51 is provided with a sealing portion 52 that closes a gap between the facing portion 51 and the movable nozzle 32 . Each sealing portion 52 is a seal lip made of, for example, rubber. The sealing portion 52 is fixed to the facing portion 51 , protrudes toward the movable nozzle 32 , and its tip is in contact with the movable nozzle 32 . The sealing portion 52 is provided at the inlet portion of the gap between the facing portion 51 and the movable nozzle 32 . That is, the sealing portion 52 is provided on the side (lower side in FIG. 5) where the injection port 32a moves when the cleaning is started with respect to the injection port 32a at the stop position. Each facing portion 51 is provided with a heating portion 53 such as a heater.

According to the above configuration, by providing the facing portion 51 that faces the ejection port 32a at the stop position, it is possible to prevent foreign matter such as raindrops and dust from entering the ejection port 32a at the stop position. In addition, immediately after the start of cleaning, the air jetted from the jet nozzle 32a hits the opposing portion 51 and passes through the gap between the movable nozzle 32 and the cover 33, so that the foreign matter is trapped in the gap between the movable nozzle 32 and the cover 33. You can prevent it from accumulating.

Further, according to the above configuration, since the gap between the facing portion 51 and the movable nozzle 32 is sealed by the sealing portion 52, foreign matter such as raindrops and dust can enter between the facing portion 51 and the movable nozzle 32. As a result, it is possible to further suppress foreign matter from entering the injection port 32a at the stop position. Further, according to the above configuration, the heating of the heating unit 53 can unfreeze the injection port 32a at the stop position. When the stop position of the injection port 32a is set only at one end of the return of the reciprocating motion, only the heating unit 53 corresponding to the stop position of the injection port 32a is provided, and the other heating unit 53 is omitted. is desirable.

- In the above embodiment, the contact plate 40 and the contact pins 41, 42, 43 are used as the sensor portion for detecting the position of the injection port 32a. Configuration is changeable.

For example, in the configuration shown in FIG. 6, a sensor magnet 61 that rotates integrally with the gear 35 and a magnetic sensor 62 such as a Hall element or Hall IC facing the sensor magnet 61 serve as a sensor unit for detecting the position of the injection port 32a. Configure. In the example of FIG. 6 , the first south pole portion 63 of the sensor magnet 61 is provided at a position corresponding to the first end portion Ha of the injection range H in the circumferential direction of the gear 35 . A second south pole portion 64 of the sensor magnet 61 is provided at a position corresponding to the second end portion Hb of the injection range H in the circumferential direction of the gear 35 . In addition, in the circumferential direction of the sensor magnet 61, portions other than the first and second S pole portions 63 and 64 are N poles.

The control section 23 detects the positions of the first S pole portion 63 and the second S pole portion 64 based on the output signal from the magnetic sensor 62, and stops driving the motor M based on the detection. As a result, the stop position of the injection port 32a can be a position facing the first end Ha of the injection range H and a position facing the second end Hb of the injection range H. Also, the control unit 23 stops driving the pump 22 based on the output signal from the magnetic sensor 62 .

Note that the configuration shown in FIG. 6 is an example, and part of the configuration in FIG. 6 can be changed as appropriate.
For example, in the above example, the sensor magnet 61 has first and second south pole portions 63 and 64 so that the stop position of the injection port 32a corresponds to the first end portion Ha and the second end portion Hb of the injection range H, respectively. Prepare. In this regard, one of the first and second south pole portions 63 and 64 may be omitted, and the stop position of the injection port 32a may be set to only one of the first end portion Ha and the second end portion Hb of the injection range H. . Also, the S and N poles of the sensor magnet 61 may have opposite polarities.

- FIG. 7 shows an example of a configuration in which the movable nozzle 32 can be reciprocally rotated without using the crank mechanism 34 .
The nozzle unit 21 configured as shown in FIG. 7 includes a gear 71 that rotates based on the rotation of the motor M, and a slider member 72 that meshes with the gear 71 . The gear 71 has three tooth portions 71a having two gear teeth at equal intervals in the circumferential direction.

The slider member 72 is, for example, reciprocally supported within a cylinder 73 formed in the housing 31 of the nozzle unit 21 . The slider member 72 is formed with a tooth portion 72a that meshes with the tooth portion 71a of the gear 71 at one end thereof, and a tooth portion 72b that meshes with the pinion gear portion 32b of the movable nozzle 32 at the other end thereof.

A flange 72c is formed at a portion of the slider member 72 that is located in the middle of the longitudinal direction and is housed in the cylinder 73. As shown in FIG. A compression coil spring 74 is provided between the flange 72 c and the bottom portion 73 a of the cylinder 73 . A compression coil spring 74 biases the flange 72c toward an opening 73b on the opposite side of the cylinder 73 from the bottom 73a.

When the gear 71 rotates in one direction (clockwise direction in FIG. 7) due to the rotation of the motor M, the slider member 72 resists the biasing force of the compression coil spring 74 due to the meshing of the teeth 71a and 72a. (right direction in FIG. 7).

Then, when the rotation of the gear 71 in one direction progresses and the toothed portion 72a of the slider member 72 and the toothed portion 71a of the gear 71 are disengaged, the slider member 72 is compressed by the biasing force of the compression coil spring 74. It moves in the direction in which the coil spring 74 biases. By repeating such operations, the slider member 72 performs reciprocating linear motion. When the slider member 72 reciprocates linearly, the movable nozzle 32 reciprocates due to the engagement between the toothed portion 72b of the slider member 72 and the pinion gear portion 32b.

In the configuration shown in FIG. 7, when the driving of the motor M is stopped in a state where the teeth 71a of the gear 71 and the teeth 72a of the slider member 72 are not in mesh with each other, the compression coil spring 74 pushes the slider member 72. is moved to the left in FIG. 7 to the turn-around position of the reciprocating motion. As a result, the stopping position of the injection port 32a of the movable nozzle 32 becomes the turning-back position of the reciprocating motion.

In addition, in the configuration shown in FIG. 7, even when the driving of the motor M is stopped in a state where the teeth 71a of the gear 71 and the teeth 72a of the slider member 72 are meshed, the compression coil spring 74 is also engaged with the slider member. It is desirable to configure 72 to push to the left in FIG. As a result, the stop position of the injection port 32a of the movable nozzle 32 can be set to the return position of the reciprocating motion regardless of the stop position of the motor M (that is, the stop position of the gear 71).

- In the above-described embodiment, by omitting the first notch 44a and the first protrusion 45a (or the second notch 44b and the second protrusion 45b) of the contact plate 40, the stop position of the injection port 32a can be reciprocated. may be set only at one end of the folded back.

- The configuration of the movable nozzle 32 is not limited to the above-described embodiment, and can be changed as appropriate according to the configuration of the in-vehicle sensor 11 and the like. For example, the movable nozzle 32 may be configured to rotate only in one direction. In addition, the movable nozzle 32 may be operated in a slide movement instead of rotation.

- In the above-described embodiment, the injection range H of the injection port 32a is set to include the entire optical surface 12, but the entire optical surface 12 may not be completely included. For example, as long as the jet air from the jet port 32a does not slightly reach the upper corners of the optical surface 12, the effect of the above embodiment is not affected.

The fluid supplied by the pump 22 to the optical surface 12 is not limited to air, and may be configured to supply liquid (for example, windshield washer fluid) or a mixed fluid of air and liquid to the optical surface 12 .

DESCRIPTION OF SYMBOLS 11... Vehicle-mounted sensor, 12... Optical surface (surface to be cleaned), 12a... First end, 12b... Second end, 20... Vehicle-mounted sensor cleaning device, 22... Pump, 31... Housing, 32... Movable nozzle, 32a... injection port, 34... crank mechanism, 40... contact plate (sensor portion), 41, 42, 43... first to third contact pins (sensor portion), 51... opposing portion, 52... sealing portion, 53... Heating part 61...Sensor magnet (sensor part) 62...Magnetic sensor (sensor part) M...Motor.

Claims (9)

a movable nozzle (32) having an injection port (32a);
a motor (M) as a drive source for moving the movable nozzle;
a pump (22) that supplies fluid to the movable nozzle;
An in-vehicle sensor that cleans the surface to be cleaned by injecting the fluid from the ejection port to a surface to be cleaned (12) of the in-vehicle sensor (11) while changing the position of the ejection port by moving the movable nozzle. A cleaning device,
The movable nozzle is moved so that the injection port stops at a preset stop position ,
An in-vehicle sensor cleaning device that stops driving the pump before stopping the injection port at the stop position . a movable nozzle (32) having an injection port (32a);
a motor (M) as a drive source for moving the movable nozzle;
a pump (22) that supplies fluid to the movable nozzle;
An in-vehicle sensor that cleans the surface to be cleaned by injecting the fluid from the ejection port to a surface to be cleaned (12) of the in-vehicle sensor (11) while changing the position of the ejection port by moving the movable nozzle. A cleaning device,
The movable nozzle is moved so that the injection port stops at a preset stop position,
A housing (31) for housing the movable nozzle is provided with a facing portion (51) facing the injection port at the stop position,
An in -vehicle sensor cleaning device, wherein the facing portion is provided with a sealing portion (52) for closing a gap between the facing portion and the movable nozzle. a movable nozzle (32) having an injection port (32a);
a motor (M) as a drive source for moving the movable nozzle;
a pump (22) that supplies fluid to the movable nozzle;
An in-vehicle sensor that cleans the surface to be cleaned by injecting the fluid from the ejection port to a surface to be cleaned (12) of the in-vehicle sensor (11) while changing the position of the ejection port by moving the movable nozzle. A cleaning device,
The movable nozzle is moved so that the injection port stops at a preset stop position,
A housing (31) for housing the movable nozzle is provided with a facing portion (51) facing the injection port at the stop position,
An in -vehicle sensor cleaning device in which the facing portion includes a heating portion (53). In order to inject the fluid over the entire area of the surface to be cleaned, the movable nozzle is configured such that the injection port extends from a first position corresponding to a first end (12a) of the surface to be cleaned to a second end of the surface to be cleaned. is movable to move between to a second position corresponding to the portion (12b);
4. The in-vehicle sensor cleaning device according to claim 1, wherein said stop position of said injection port is set to at least one of said first position and said second position. A sensor unit (40, 41, 42, 43, 61, 62) that detects the position of the injection port,
The in-vehicle sensor cleaning device according to any one of claims 1 to 4 , wherein the injection port is stopped at the stop position based on detection by the sensor section. 6. The in-vehicle sensor cleaning device according to claim 5 , wherein the driving of the pump is stopped based on detection of the position of the injection port by the sensor unit. The movable nozzle and the injection port are configured to reciprocate,
The in-vehicle sensor cleaning device according to any one of claims 1 to 6 , wherein said stop position of said injection port is set at a turn-back position of reciprocating motion. A mechanism for converting the rotation of the motor into reciprocating rotation of the movable nozzle, comprising a crank mechanism (34) that rotates the movable nozzle so that the closer it is to the turn-around position, the lower the speed and the higher the torque, The in-vehicle sensor cleaning device according to claim 7 . 9. The in-vehicle sensor cleaning device according to claim 8 , wherein the start-up of the motor and the start-up of the pump are set at the same timing.

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