JP2020097293A - Cleaning device and detection device - Google Patents

Abstract

To provide a cleaning device which can properly clean a cleaned surface having a proper shape, and to provide a detection device.SOLUTION: A cleaning device includes: a string-like member 21 which moves along a detection surface 13; a first roller 22 and a second roller 23 spaced a predetermined distance apart in a direction in which the string-like member 21 extends on the detection surface 13 and extending in a direction intersecting with the direction and a direction along the detection surface 13; and a motor 24 which rotationally drives the first roller 22 and the second roller 23 in a linked manner. The first roller 22 and the second roller 23 are respectively formed with attachment parts 31a, 32a which spirally extend along center shafts 22a, 23a and around which the string-like member 21 is wound. A first end 21a of the string-like member 21 is fixed to the first end part 22b side of the first roller 22 and a second end part 21b of the string-like member 21 is fixed to the fourth end part 23c of the second roller 23.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cleaning device and a detection device.

BACKGROUND ART A wiper device including a blade for wiping a cover glass of a housing for housing a camera, a rotating shaft for supporting a base end of the blade, and a driving unit such as a motor for rotating the rotating shaft has been conventionally known. (For example, see Patent Document 1). In such a wiper device, the blade wipes water droplets on the surface of the cover glass while reciprocating along an arcuate orbit by the rotation of the rotating shaft.

JP, 2005-205929, A

By the way, the above-mentioned wiper device only rotates the blade about the axis of the rotation shaft fixed to the housing, and the movement of the blade is restricted to an arcuate orbit. For this reason, since the shape of the wiping range by the blade is a fan shape, if the surface to be wiped is formed in a rectangular shape, for example, there is a possibility that unwiping will occur.

Therefore, an object of the present invention is to provide a cleaning device capable of appropriately cleaning a surface to be cleaned having an appropriate shape, and to provide a detection device including the cleaning device and having excellent detection performance. To do.

In order to solve the above problems, a cleaning apparatus according to the present invention is a string-shaped member that moves on a surface to be cleaned of a cleaning object along the surface to be cleaned, and the string-shaped member is on the surface to be cleaned. And a first roller and a second roller that extend in a direction that intersects the cleaning surface at a predetermined interval and that intersects with the cleaning roller, and the first roller and the second roller that rotate in conjunction with each other. And a drive unit for driving the first roller and the second roller. Each of the first roller and the second roller is formed with a mounting portion that spirally extends along a central axis and around which the string-shaped member is wound. The two axial ends of the second roller are the first end and the second end, and the axial end of the second roller on the same side as the first end is the third end and the same side as the second end. A first end of the string-shaped member is fixed to the first end side of the first roller, and a second end of the string-shaped member is the second end of the second roller. The roller is fixed to the fourth end side of the roller.

With this configuration, the cord-like member extends on the surface to be cleaned by the cord-like member by a combination of winding and feeding out the cord-like member by the mutual spiral mounting portions of the first roller and the second roller. Direction and the direction in which each roller extends. Accordingly, the string-shaped member can be driven by an appropriate trajectory according to the shape of the surface to be cleaned, and the entire surface to be cleaned can be appropriately cleaned by the direct or indirect wiping operation by the string-shaped member. ..

In the cleaning device according to the present invention, the drive unit is connected to the motor connected to either the first roller or the second roller, the first roller and the second roller, and the first unit. And a transmission mechanism that transmits a rotational force between the roller and the second roller.

With this configuration, the driving force of one motor is transmitted to the first roller and the second roller. As a result, it is possible to suppress an increase in the cost required for the configuration, as compared with the case where each of the first roller and the second roller is provided with a motor.

A cleaning device according to the present invention is configured such that, of the first roller and the second roller, at least one roller to which the motor is not connected has the first end portion, the second end portion, the third end portion, and At least one of the two ends of the fourth end, at least one of the rear side of the surface to be cleaned opposite to the front side and the direction in which the first roller and the second roller are separated from each other. It is preferable that a biasing member that biases the device is provided.

With this configuration, the string-shaped member on the surface to be cleaned is pressed against the surface to be cleaned by the biasing member. Accordingly, the entire surface to be cleaned can be appropriately cleaned by the direct or indirect wiping operation of the string-like member that moves on the surface to be cleaned with the interlocking rotation of the first roller and the second roller. ..

In the cleaning device according to the present invention, in the axial direction parallel to the central axis of each of the first roller and the second roller, the length of the first roller and the second roller is greater than the width of the surface to be cleaned. It is preferable that the surface to be cleaned is arranged inside the outer shape positions of the first roller and the second roller in the axial direction.

With this configuration, the string-shaped member extending on the surface to be cleaned moves to the outside of the surface to be cleaned in at least one of the axial directions according to the interlocking rotation of the first roller and the second roller. be able to. Accordingly, when the cleaning of the surface to be cleaned is unnecessary, the cord-shaped member is arranged outside the surface to be cleaned, so that the desired function of the surface to be cleaned can be prevented from being impaired.

The cleaning device according to the present invention preferably includes a guide portion that guides the movement of the string-like member from the outside of the surface to be cleaned to the surface to be cleaned.

With this configuration, the guide portion guides the movement of the string-shaped member from the outside of the surface to be cleaned onto the surface to be cleaned. Accordingly, the string-shaped member can be smoothly moved between the outside of the surface to be cleaned and the surface to be cleaned.

In the cleaning device according to the present invention, at least one of the first roller and the second roller is arranged rearward of the surface to be cleaned, which is opposite to the front surface, and the peripheral portion of the surface to be cleaned has the above-mentioned structure. It is preferable to provide a support portion that supports the string-shaped member so as to be separated from the peripheral portion between at least one of the cleaning target surface and the surface to be cleaned.

With this configuration, at least one of the first roller and the second roller is disposed behind the surface to be cleaned, and thus exposed to foreign matter such as dust and droplets removed from the surface to be cleaned. This can be prevented and normal operation of each roller can be maintained.
Further, the string-like member extending from the surface to be cleaned toward the rear of the surface to be cleaned is supported by the supporting portion so as to be separated from the peripheral portion. This prevents the string-like member extending from the surface to be cleaned toward the rear of the surface to be cleaned from coming into contact with an unintended portion such as the edge of the surface to be cleaned when the support is not provided. Therefore, it is possible to prevent the string-like member from being damaged by friction.

A detection device according to the present invention includes the cleaning device described above and the surface to be cleaned.

With this configuration, the detection surface of the detection device is set to be the surface to be cleaned, so that it is possible to suppress a decrease in detection efficiency.

According to the present invention, the string-shaped member can be driven by the track according to the shape of the surface to be cleaned, and the surface to be cleaned can be appropriately cleaned.

The perspective view which shows the structure of the washing|cleaning apparatus and detection device which concern on embodiment of this invention. FIG. 3 is a diagram showing the configurations of the cleaning device and the detection device according to the embodiment of the present invention as seen from the front side of the detection device (the positive direction side in the Y-axis direction). It is sectional drawing which shows the structure of the roller urging|biasing part of the washing|cleaning apparatus which concerns on embodiment of this invention, Comprising: The sectional view by the YZ plane in the position of the AA line shown in FIG. Sectional drawing by the XZ plane in the position of the BB line shown in FIG. It is the figure seen from the front side (the positive direction side of the Y-axis direction) which shows the composition of the washing device and the detecting device concerning the embodiment of the present invention, and is a figure showing the winding start state of the cord-like member by the 1st roller. It is the figure seen from the front side (the positive direction side of the Y-axis direction) which shows the composition of the washing device and the detecting device concerning the embodiment of the present invention, and is a figure showing the winding start state of the cord-like member by the 2nd roller. The figure seen from the front side (the positive direction side of the Y-axis direction) showing the composition of the washing device and the detecting device concerning the 1st modification of an embodiment of the present invention. Sectional drawing by the YZ plane in the position of CC line shown in FIG. Sectional drawing by the YZ plane which shows the structure of the washing|cleaning apparatus and detection apparatus which concern on the 2nd modification of embodiment of this invention. The figure seen from the front side (the positive direction side of the Y-axis direction) showing the composition of the washing equipment and the detecting device concerning the 3rd modification of an embodiment of the present invention.

Hereinafter, an embodiment of a cleaning device and a detection device of the present invention will be described with reference to the accompanying drawings.

(Cleaning device and detection device)
FIG. 1 is a perspective view showing the configurations of a cleaning device 11 and a detection device 10 according to the embodiment. FIG. 2 is a diagram showing the configurations of the cleaning device 11 and the detection device 10 according to the embodiment, as viewed from the front side of the detection device (the positive direction side in the Y-axis direction).

As shown in FIGS. 1 and 2, the detection device 10 of the present embodiment includes a cleaning device 11 that cleans the surface to be cleaned. The surface to be cleaned of the detection device 10 is, for example, the detection surface 13 provided on the front side (the positive direction side in the Y-axis direction described later) of the support 12 of the detection device 10. That is, the detection device 10 is the cleaning target of the cleaning device 11.

In the following, the X-axis, Y-axis, and Z-axis directions that are orthogonal to each other in the three-dimensional space are directions parallel to the respective axes. For example, the left-right direction of the detection device 10 is parallel to the X-axis direction. The positive direction of the X-axis direction is the direction from the right side to the left side of the detection device 10 (the direction from the left side to the right side in FIG. 2 ). The front-back direction of the detection device 10 is parallel to the Y-axis direction. The positive direction of the Y-axis direction is the direction from the rear part to the front part of the detection device 10. For example, the positive direction of the Y-axis direction is parallel to the normal direction of the detection surface 13. The up-down direction of the detection device 10 is parallel to the Z-axis direction. The positive Z-axis direction is a direction from the lower part of the detection device 10 toward the upper part.

The outer shape of the support 12 is, for example, a rectangular box shape. The outer shape of the detection surface 13 is, for example, flat or curved.
The detection device 10 detects the distance to the object by, for example, emitting light (irradiation light) to the periphery of the detection device 10 via the detection surface 13 and receiving scattered light scattered by the object. For example, a range sensor. The range sensor is, for example, LIDAR (Light Detection and Ranging or Laser Imaging Detection and Ranging).

For example, the detection device 10 is mounted on the front grill or the like on the front surface of the vehicle body of the vehicle. The detection device 10 is arranged such that the left-right direction, the front-rear direction, and the up-down direction of the detection device 10 are parallel to the left-right direction, the front-rear direction, and the up-down direction of the vehicle. The detection device 10 detects an object around the vehicle, a pedestrian, and the like by the irradiation light and the scattered light that pass through the detection surface 13 exposed to the outside of the vehicle.

The cleaning device 11 includes, for example, a string-shaped member 21, a first roller 22 and a second roller 23, a motor 24, a transmission mechanism 25, two roller urging portions 26, two guide portions 27, and two. And one cover member 28. The motor 24 corresponds to the drive unit in the claims. The roller biasing portion 26 corresponds to the biasing member in the claims.

The string-shaped member 21 is formed of an elastic material such as rubber or resin. The first end 21a of the string-shaped member 21 is fixed to the first end 22b of the first roller 22 described later. The second end 21b of the string-shaped member 21 is fixed to the fourth end 23c of the second roller 23, which will be described later.
The string-shaped member 21 is wound around the first roller 22 and the second roller 23, and on the detection surface 13 of the detection device 10 or the surface (guide surface) 27A of the guide portion 27 described later, the vertical direction (that is, the Z-axis direction). It is arranged to extend to. The string-like member 21 is arranged so as to contact at least the entire detection surface 13 of the detection device 10 in the up-down direction (for example, the entire area of the detection surface 13 in the YZ plane).

The string-shaped member 21 is wound around the first roller 22 or the second roller 23 by the rotation of the central axes 22a and 23a of the first roller 22 and the second roller 23, respectively. Along with this, the string-like member 21 moves in the up-down direction (that is, the Z-axis direction) and the left-right direction (that is, the X-axis direction) along the detection surface 13 while contacting the entire detection surface 13 in the up-down direction. As a result, the string-shaped member 21 wipes the entire detection surface 13 and wipes foreign matter such as dust and liquid droplets existing on the detection surface 13.

The outer shape of each of the first roller 22 and the second roller 23 is, for example, the same shape, and is formed in a cylindrical shape. On the outer peripheral surfaces 22A and 23A of the first roller 22 and the second roller 23, mounting portions 31a and 32a around which the cord-shaped member 21 is wound are formed. Each of the mounting portions 31a and 32a is, for example, a groove or the like that spirally extends along the central axes 22a and 23a of the first roller 22 and the second roller 23. The outer shape of the mounting portion 31a of the first roller 22 and the outer shape of the mounting portion 32a of the second roller 23 are formed in the same shape. The same shape is, for example, the winding direction and pitch in the spiral groove.

The central shaft 22a of the first roller 22 is rotatably supported by the support 12 of the detection device 10 via a bearing member (not shown) or the like. The central shaft 23a of the second roller 23 is rotatably supported by the support 12 of the detection device 10 via a roller urging portion 26 described later, for example.

The first roller 22 and the second roller 23 are orthogonal to this direction (Z-axis direction) with a predetermined interval in the direction in which the string-shaped member 21 extends on the detection surface 13 (for example, the vertical direction and the Z-axis direction). Direction, and so as to extend in the direction along the detection surface 13. That is, the axial directions of the central axes 22a and 23a of the first roller 22 and the second roller 23 are parallel to the left-right direction (X-axis direction) of the detection surface 13.
The first roller 22 and the second roller 23 are, for example, outside the detection surface 13 in the direction in which the string-shaped member 21 extends on the detection surface 13 in the periphery of the peripheral edge portion 13 a of the detection surface 13, that is, above the detection surface 13 ( It is arranged on the positive side in the Z-axis direction and on the lower side (the negative side in the Z-axis direction).

The axial lengths of the first roller 22 and the second roller 23 are formed to be larger than the width of the detection surface 13 in the left-right direction. For example, when viewed from the front-back direction of the detection device 10 (that is, the Y-axis direction), the detection surface 13 is arranged inside the outer shape position P of the first roller 22 and the second roller 23. For example, the outer shape positions P of the first roller 22 and the second roller 23 in the axial direction are the tip positions of the first end portion 22b and the second end portion 22c, which are both axial ends of the first roller 22, and the second roller 23. Is a position that surrounds the tip end positions of the third end portion 23b and the fourth end portion 23c, which are both axial ends of the. The first roller 22 and the second roller 23 have the first end portion 22b and the third end portion 23b oriented in the same direction, and the second end portion 22c and the fourth end portion 23c oriented in the same direction.
A guide portion 27, which will be described later, is arranged between the peripheral edge portion 13a of the detection surface 13 and the outer shape positions P of the first roller 22 and the second roller 23 in the left-right direction of the detection surface 13.

The motor 24 is fixed to the support 12 of the detection device 10. The rotation shaft (not shown) of the motor 24 is connected to the central shaft 22a of the first roller 22 on the side of the first end 22b of the first roller 22, for example. The motor 24 rotationally drives the first roller 22 around the central axis 22a.

The motor 24 is drive-controlled by an appropriate control device, for example. The control device is a software function unit that functions by executing a predetermined program by a processor such as a CPU (Central Processing Unit). The software function unit is a processor such as a CPU, a ROM (Read Only Memory) for storing programs, a RAM (Random Access Memory) for temporarily storing data, and an ECU (Electronic Control Unit) including an electronic circuit such as a timer. is there. Further, at least a part of the control device may be an integrated circuit such as an LSI (Large Scale Integration).

The transmission mechanism 25 is, for example, a belt mechanism including a belt 25a spanned by the central shaft 22a of the first roller 22 and the central shaft 23a of the second roller 23. The belt 25a is, for example, bridged over the central axes 22a and 23a on the second end 22c side of the first roller 22 and the fourth end 23c side of the second roller 23. The transmission mechanism 25 may be, for example, a chain mechanism including a chain instead of the belt 25a or a gear mechanism including a gear instead of the belt 25a. The transmission mechanism 25 transmits the rotational force around the central axes 22a and 23a between the central axis 22a of the first roller 22 and the central axis 23a of the second roller 23.

FIG. 3 is a cross-sectional view showing the configuration of the roller urging portion 26 of the cleaning device 11 according to the embodiment, and is a cross-sectional view taken along the YZ plane at the position of the line AA shown in FIG. FIG. 4 is a cross-sectional view taken along the line BB shown in FIG. 3 along the XZ plane.
The two roller urging portions 26 are provided on the central shaft 23a on the third end portion 23b side and the fourth end portion 23c side of the second roller 23, for example.
The roller urging portion 26 includes, for example, a bearing member 41, a bearing housing portion 42, an elastic member 43, and a housing 44.

The bearing member 41 is, for example, a rolling bearing such as a radial bearing. The bearing member 41 supports the central shaft 23a of the second roller 23 rotatably around the shaft. The bearing member 41 is housed in the bearing housing portion 42.
The outer shape of the bearing accommodating portion 42 is formed in a box shape, for example. The bearing housing portion 42 houses the bearing member 41 therein. The bearing accommodating portion 42 is arranged in the housing 44 so as to be slidable in a predetermined direction and connected to the elastic member 43. The predetermined direction is, for example, the front-back direction of the detection device 10 (that is, the normal direction of the detection surface 13 and the Y-axis direction).

The elastic member 43 is a spring member such as a tension coil spring. The elastic member 43 applies to the bearing accommodating portion 42 an elastic force toward the rear in the front-rear direction of the detection device 10 in the sliding direction of the bearing accommodating portion 42 in the housing 44, that is, toward the rear opposite to the front surface of the detection surface 13. It is arranged to work.

The first end portion 43a of the elastic member 43 is fixed to, for example, an end surface 44A of the inner wall surface of the housing 44, which is rearward in the front-rear direction (negative Y-axis direction side). The second end portion 43b of the elastic member 43 is fixed to an end surface 42A of the outer surface of the bearing housing portion 42 that is rearward in the front-rear direction (on the negative side in the Y-axis direction). The elastic member 43 causes the bearing housing portion 42 to exert an elastic force directed rearward in the front-rear direction of the detection device 10 by, for example, a repulsive force of the tension coil spring in an expanded state.

The outer shape of the housing 44 is formed in a box shape, for example. The housing 44 is fixed to the support 12 of the detection device 10. The housing 44 houses the bearing member 41 that supports the central shaft 23a of the second roller 23, the bearing housing portion 42 that houses the bearing member 41, and the elastic member 43 inside.

The housing 44 includes a guide member (not shown) such as a guide rail that guides the sliding movement of the bearing housing 42 in the front-rear direction of the detection device 10. The housing 44 is formed with, for example, a through hole 44a into which the central shaft 23a of the second roller 23 is inserted. The shape of the through hole 44a is, for example, an elongated hole extending in the front-rear direction of the detection device 10. That is, the shape of the through hole 44 a is formed so that the central axis 23 a of the second roller 23 can move in the front-back direction of the detection device 10 as the bearing housing 42 slides in the housing 44. There is.

As shown in FIGS. 1 and 2, the outer shape of the guide portion 27 is, for example, a plate shape having a surface that is smoothly continuous with the detection surface 13. The outer shape of the surface (guide surface) 27A of the guide portion 27 is formed in, for example, a flat surface or a curved surface that is smoothly continuous with the detection surface 13.
The two guide portions 27 are fixed to the support 12 of the detection device 10. The two guide portions 27 are arranged between the peripheral edge portion 13 a of the detection surface 13 and the outer shape positions P of the first roller 22 and the second roller 23 in the left-right direction of the detection surface 13.
The two guide portions 27 guide the movement of the string-shaped member 21 from the outside of the detection surface 13 (that is, the outside in the left-right direction) to the detection surface 13.

The outer shape of the cover member 28 is, for example, a plate shape that curves along the outer peripheral surfaces 22A and 23A of the first roller 22 and the second roller 23, respectively. In the axial direction of the first roller 22 and the second roller 23, the length of the cover member 28 is, for example, the same as the length of each of the first roller 22 and the second roller 23.

The two cover members 28 are fixed to the support 12 of the detection device 10. The cover member 28 around the first roller 22 is disposed above the outer peripheral surface 22A of the first roller 22 upward (that is, in the positive direction along the Z-axis) by a predetermined distance. The cover member 28 around the second roller 23 is disposed below the outer peripheral surface 23A of the second roller 23 (that is, in the negative Z-axis direction) by a predetermined distance.
The two cover members 28 guide the attachment of the cord-shaped member 21 wound by each of the first roller 22 and the second roller 23 to the attachment portions 31a and 32a.

(Operation of cleaning device)
Next, the operation of the cleaning device 11 will be described.
FIG. 5 is a view showing the configurations of the cleaning device 11 and the detection device 10 according to the embodiment as viewed from the front side (the positive direction side in the Y-axis direction), and the winding start of the string-shaped member 21 by the first roller 22 is started. It is a figure which shows a state. FIG. 6 is a view showing the configurations of the cleaning device 11 and the detection device 10 according to the embodiment as viewed from the front side (the positive direction side in the Y-axis direction), and the winding start of the string-shaped member 21 by the second roller 23 is started. It is a figure which shows a state.

As shown in FIG. 5 or 6, when the cleaning device 11 is stopped, the string-shaped member 21 is arranged outside the detection surface 13, that is, on the surface 27A of either of the two guide portions 27. For example, in the case shown in FIG. 5, the winding amount of the string-shaped member 21 by the first roller 22 is almost zero, and the winding amount of the string-shaped member 21 by the second roller 23 is almost the maximum amount. On the other hand, for example, in the case shown in FIG. 6, the winding amount of the string-shaped member 21 by the first roller 22 is almost the maximum amount, and the winding amount of the string-shaped member 21 by the second roller 23 is almost zero. is there.

Then, when the driving of the motor 24 is started in the predetermined rotation direction with the start of the operation of the cleaning device 11, a rotational force is applied from the motor 24 to the first roller 22 and the transmission mechanism 25 is moved from the first roller 22. The rotational force is transmitted to the second roller 23 via the. As a result, each of the first roller 22 and the second roller 23 rotates in conjunction with each other about the central axes 22a and 23a.
The predetermined rotation direction is, for example, the winding direction of the string-like member 21 by the first roller 22 in the case shown in FIG. 5, or the winding direction of the string-like member 21 by the second roller 23 in the case shown in FIG. 6, for example. Is.
With the interlocking rotation of the first roller 22 and the second roller 23, the string-shaped member 21 is guided by the two cover members 28, and the mounting portion 31a of the first roller 22 and the mounting portion 32a of the second roller 23 are guided. One of them is wound up and sent out from the other.

The string-shaped member 21 is guided by the winding of the string-shaped member 21 by the first roller 22 and the sending-out by the second roller 23, or the winding of the string-shaped member 21 by the second roller 23 and the sending-out by the first roller 22. It moves vertically and horizontally along the surface 27A of the portion 27. Further, the string-like member 21 moves in the up-down direction and the left-right direction along the detection surface 13 after being guided by the guide portion 27 to the detection surface 13.

At this time, the two roller urging portions 26 apply a force toward the rear in the front-rear direction of the detection device 10 to the second roller 23, so that the string-shaped member 21 on the detection surface 13 becomes the detection surface 13. It is pressed toward and moves while contacting the entire detection surface 13 in the vertical direction. In this way, the string-shaped member 21 wipes the entire detection surface 13 by moving in the up-down direction and the left-right direction, and wipes foreign matter such as dust and droplets present on the detection surface 13.

As described above, according to the cleaning device 11 of the present embodiment, by the combination of the winding and sending out of the string-shaped member 21 by the mutual spiral mounting portions 31a and 32a of the first roller 22 and the second roller 23, The string-like member 21 moves on the detection surface 13 in the Z-axis direction and the X-axis direction. Thereby, the string-shaped member 21 can be driven by an appropriate track according to the shape of the detection surface 13, and the entire detection surface 13 can be appropriately washed by the wiping operation by the string-shaped member 21.

The driving force of one motor 24 is applied to the first roller 22 and is also transmitted to the second roller 23 via the transmission mechanism 25. As a result, it is possible to suppress an increase in the cost required for the configuration, as compared with the case where each of the first roller 22 and the second roller 23 is provided with a motor.
The string-shaped member 21 on the detection surface 13 is pressed against the detection surface 13 by the two roller urging portions 26 via the second roller 23. Thereby, the contact between the string-shaped member 21 and the detection surface 13 can be appropriately maintained, and the entire detection surface 13 can be appropriately washed.

Further, when viewed from the front-rear direction of the detection device 10 (that is, the Y-axis direction), the detection surface 13 is arranged inside the outer shape position P of the first roller 22 and the second roller 23. Accordingly, the string-shaped member 21 extending on the detection surface 13 can move to the outside of the detection surface 13 in the axial direction of the first roller 22 and the second roller 23. Accordingly, when the detection surface 13 does not need to be cleaned, the detection operation by the detection device 10 can be properly performed by disposing the string-shaped member 21 outside the detection surface 13.

Further, the two guide portions 27 arranged between the peripheral edge portion 13 a of the detection surface 13 and the outer shape positions P of the first roller 22 and the second roller 23 in the left-right direction of the detection surface 13 are provided from the outside of the detection surface 13. The movement of the string-shaped member 21 onto the detection surface 13 is guided. Thereby, the string-shaped member 21 can be smoothly moved between the outside of the detection surface 13 and the top of the detection surface 13.

Further, the roller urging portion 26 applies a tensile load to the bearing member 41 supporting the second roller 23 by the elastic member 43 via the bearing housing portion 42. Therefore, depending on the shape of the detection surface 13 and the like, The magnitude of the force pressing the member 21 against the detection surface 13 can be easily adjusted.

Further, according to the detection device 10 of the present embodiment, the cleaning device 11 is provided. As a result, the detection surface 13 of the detection device 10 can be properly washed, and a decrease in detection efficiency can be suppressed.

Hereinafter, modified examples of the embodiment will be described.

(First modification)
In the above-described embodiment, the string-shaped member 21 wipes the detection surface 13 by moving while contacting the detection surface 13, but the present invention is not limited to this.
For example, the cleaning device 11 may include a wiping member 51 that is attached to the string-shaped member 21 on the detection surface 13 and is in contact with the detection surface 13.
FIG. 7 is a diagram showing the configurations of the cleaning device 11 and the detection device 10 according to the first modified example of the embodiment, viewed from the front side (the positive direction side in the Y-axis direction). FIG. 8 is a cross-sectional view taken along the line YZ at the position of the line CC shown in FIG. 7.

As shown in FIGS. 7 and 8, the cleaning device 11 according to the first modification includes a wiping member 51 and two slide guide portions 52.
The outer shape of the wiping member 51 is formed, for example, in a plate shape extending in the vertical direction along the detection surface 13. The wiping member 51 is formed of an elastic material such as rubber or resin. The wiping member 51 includes, for example, a contact portion 53 that comes into contact with the detection surface 13, a mounting portion 54 to which the string-shaped member 21 is mounted, and two slide portions 55 that are mounted to the two slide guide portions 52. .. The contact portion 53, the mounting portion 54, and the two slide portions 55 are integrally formed, for example.

The contact portion 53 is provided so as to contact the entire area of the detection surface 13 in the vertical direction (for example, the entire area of the detection surface 13 in the YZ plane).
The mounting portion 54 is provided on the front side in the front-rear direction with respect to the contact portion 53. The mounting portion 54 is formed with a through hole 54a that penetrates in the vertical direction. The string-like member 21 extending in the vertical direction on the detection surface 13 is inserted into the through hole 54a so as to be movable in the vertical direction.

The two slide portions 55 are provided on the upper side and the lower side in the vertical direction with respect to the contact portion 53. The outer shape of each slide portion 55 is, for example, formed in a convex shape that protrudes upward or downward in the vertical direction. Each slide part 55 is attached to each slide guide part 52 and is provided so as to be slidable in the left-right direction along the detection surface 13 in each slide guide part 52.

The outer shape of each slide guide portion 52 is, for example, a concave rail shape into which the slide portion 55 of the wiping member 51 is fitted. The two slide guide portions 52 are fixed to the support 12 of the detection device 10.
The two slide guide portions 52 are arranged above and below the detection surface 13 so as to extend parallel to the left-right direction of the detection surface 13. In the axial direction of the first roller 22 and the second roller 23, the length of each slide guide portion 52 is formed to be the same as the length of each of the first roller 22 and the second roller 23, for example.

The wiping member 51 slides each slide portion 55 in each slide guide portion 52 as the string-shaped member 21 inserted in the mounting portion 54 moves in the left-right direction of the detection surface 13. The wiping member 51 wipes the entire detection surface 13 by moving in the left-right direction along the detection surface 13 together with the string-like member 21 while keeping the contact portion 53 in contact with the entire detection surface 13 in the vertical direction. Foreign matter such as dust and liquid droplets existing on the surface 13 is wiped off.
According to the first modified example, by providing the wiping member 51 that moves on the detection surface 13 by the string-shaped member 21, the wiping member 51 that directly contacts the detection surface 13 can be easily replaced.

(Second modified example)
Although the first roller 22 and the second roller 23 are arranged above and below the detection surface 13 in the above-described embodiment, the present invention is not limited to this.
For example, at least one of the first roller 22 and the second roller 23 may be arranged behind the detection surface 13 (that is, on the negative side in the Y-axis direction).
FIG. 9 is a cross-sectional view taken along the YZ plane showing the configurations of the cleaning device 11 and the detection device 10 according to the second modified example of the embodiment.

As shown in FIG. 9, the cleaning device 11 according to the second modification has a configuration different from that of the cleaning device 11 according to the above-described embodiment, for example, the first roller 22 and the second roller 22 arranged behind the detection surface 13. The roller 23 and the two support portions 61 that support the string-shaped member 21 so as to be spaced apart from the peripheral edge portion 13a of the detection surface 13 between the rollers 22 and 23 and the detection surface 13 are provided.
The outer shape of the support portion 61 is formed in a column shape having an outer surface that smoothly curves, such as a column shape. The two support portions 61 are fixed to the support body 12 of the detection device 10.

The two support portions 61 are arranged above and below the detection surface 13 in the up-down direction of the detection surface 13 around the peripheral edge portion 13 a of the detection surface 13. The two support portions 61 are arranged so as to extend parallel to the axial directions of the first roller 22 and the second roller 23. In the axial direction of the first roller 22 and the second roller 23, the length of each support portion 61 is, for example, the same as the length of each of the first roller 22 and the second roller 23. The string-shaped member 21 is arranged on the support portion 61, and the string-shaped member 21 is supported by the support portion 61 so as to be separated from the peripheral edge portion 13 a of the detection surface 13.

According to this second modified example, the first roller 22 and the second roller 23 are arranged behind the detection surface 13 so that they are not exposed to foreign matter such as dust and liquid droplets removed from the detection surface 13. Therefore, the normal operation of each roller 22 and 23 can be maintained.
The string-shaped member 21 extending from the detection surface 13 toward the rear of the detection surface 13 is supported by the support portion 61. Thereby, for example, when the support portion 61 is not provided, the string-like member 21 extending from above the detection surface 13 toward the rear of the detection surface 13 comes into contact with an unintended portion such as an edge portion of the detection surface 13. It is possible to prevent the cord-shaped member 21 from being damaged by friction.

In addition, in the second modified example, each of the two support portions 61 may be a roller or the like rotatably supported in the support body 12 of the detection device 10.
Further, in the cleaning device 11 according to the second modified example, the two roller urging portions 26 and the two cover members 28 in the above-described embodiment may be omitted.

(Third Modification)
Although the first roller 22 and the second roller 23 are arranged above and below the detection surface 13 in the above-described embodiment, the present invention is not limited to this.
For example, the first roller 22 and the second roller 23 may be arranged on the left side and the right side of the detection surface 13 (that is, the positive direction side and the negative direction side in the X-axis direction).
FIG. 10 is a diagram showing the configurations of the cleaning device 11 and the detection device 10 according to the third modified example of the embodiment, viewed from the front side (the positive direction side in the Y-axis direction).

As shown in FIG. 10, the cleaning device 11 according to the third modified example has a main configuration different from that of the cleaning device 11 according to the above-described embodiment. For example, the cleaning device 11 is parallel to the vertical direction (Z-axis direction) of the detection surface 13. A first roller 22 and a second roller 23 having respective central axes 22a and 23a are provided. Further, the cleaning device 11 according to the third modified example includes two guide portions 27 arranged above and below the peripheral edge portion 13a of the detection surface 13 in the vertical direction of the detection surface 13.

In the embodiment described above, the winding of the string-shaped member 21 by each of the first roller 22 and the second roller 23 is switched by switching the rotation direction of the motor 24, but the invention is not limited to this.
For example, a spring member such as a mainspring connected to the central shaft 23a of the second roller 23 may be provided, and the rotational driving direction of the motor 24 may be restricted to a predetermined direction. In this case, for example, a state in which the string-shaped member 21 is wound by the first roller 22 that is rotationally driven by the motor 24 and a state in which the rotational force is applied from the spring member in a direction opposite to the rotational direction by the motor 24 are generated by the second roller 23. The state in which the string-shaped member 21 is wound may be switched.
Further, the motor 24 may be connected to the second roller 23 instead of the first roller 22. In this case, the first roller 22 is provided with a roller urging portion 26.

Although the elastic member 43 is, for example, a tension coil spring in the above-described embodiment, the elastic member 43 is not limited to this and may be another spring member such as a compression coil spring or a torsion spring.
Further, in the above-described embodiment, the elastic member 43 is directed rearward in the front-rear direction of the detection device 10 in the sliding direction of the bearing accommodating portion 42 in the housing 44, that is, rearward on the side opposite to the front surface of the detection surface 13. The case where the elastic member is arranged so that the elastic force acts on the bearing housing 42 has been described. However, the present invention is not limited to this, and the elastic member 43 may be arranged so as to cause the bearing housing portion 42 to exert an elastic force directed in a direction in which the first roller 22 and the second roller 23 are separated from each other. ..

Further, in the above-described embodiment, the first end 21 a of the string-shaped member 21 is fixed to the first end portion 22 b of the first roller 22, and the second end 21 b of the string-shaped member 21 is connected to the second roller 23. The case of being fixed to the fourth end portion 23c of the above has been described. However, the ends 21a and 21b of the string-like member 21 do not necessarily have to be fixed to the ends 22b and 23c of the rollers 22 and 23, respectively. Depending on the axial length of each roller 22, 23 and the width of the detection surface 13 in the left-right direction, each end 21a, 21b of the string-like member 21 is located on the side of each end 22b, 23c of each roller 22, 23. It just needs to be fixed.

The embodiments of the present invention are presented as examples, and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof, as well as included in the scope and spirit of the invention.

DESCRIPTION OF SYMBOLS 10... Detection device, 11... Cleaning device, 12... Support body, 13... Detection surface (cleaning surface), 13a... Peripheral part, 21... String member, 21a... 1st end, 21b... 2nd end, 22... 1st roller, 22a... Central axis, 22b... 1st end part, 22c... 2nd end part, 23... 2nd roller, 23a... Central axis, 23b... 3rd end part, 23c... 4th end part, 24... Motor (driving part), 25... Transmission mechanism, 26... Roller biasing part (biasing member), 27... Guide part, 28... Cover member, 31a, 32a... Mounting part, 51... Wiping member, 52... Slide guide part , 61... Supporting part, P... External position

Claims (7)

A string-like member that moves on the surface to be cleaned of the object to be cleaned along the surface to be cleaned;
A first roller and a second roller extending in a direction intersecting the string-shaped member at a predetermined interval in a direction in which the string-shaped member extends on the surface to be cleaned, and in a direction along the surface to be cleaned;
A driving unit that rotationally drives the first roller and the second roller in an interlocking manner;
Equipped with
Each of the first roller and the second roller has a mounting portion that spirally extends along a central axis and around which the string-shaped member is wound.
Both axial ends of the first roller are a first end and a second end, and an axial end of the second roller on the same side as the first end is a third end and the second end. When the end on the same side as the part is the fourth end,
A first end of the string-like member is fixed to the first end side of the first roller,
The cleaning device, wherein the second end of the string-like member is fixed to the fourth end side of the second roller. The drive unit is
A motor connected to either one of the first roller and the second roller,
A transmission mechanism that is connected to the first roller and the second roller and that transmits a rotational force between the first roller and the second roller;
The cleaning device according to claim 1, further comprising: Any one of the first end portion, the second end portion, the third end portion, and the fourth end portion of at least one of the first roller and the second roller to which the motor is not connected An urging member that urges the two end portions in at least one of the rear side of the surface to be cleaned opposite to the front surface and the direction in which the first roller and the second roller are separated from each other. The cleaning device according to claim 2, wherein the cleaning device is provided. In the axial direction parallel to the central axis of each of the first roller and the second roller, the length of the first roller and the second roller is set to be larger than the width of the surface to be cleaned,
The said to-be-cleaned surface is arrange|positioned inside the outer shape position of the said 1st roller and the said 2nd roller in the said axial direction, The any one of Claim 1 to 3 characterized by the above-mentioned. Cleaning device. The cleaning device according to claim 4, further comprising a guide portion that guides movement of the string-shaped member from the outside of the surface to be cleaned to the surface to be cleaned. At least one of the first roller and the second roller is disposed behind the surface to be cleaned opposite to the front surface,
7. A support part is provided around the periphery of the surface to be cleaned, the support part supporting the string-like member so as to be separated from the peripheral part between the at least one and the surface to be cleaned. The cleaning device according to any one of claims 1 to 5. A cleaning device according to any one of claims 1 to 6,
The surface to be cleaned,
A detection device comprising:

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