Article attachment device and movement measurement device

Abstract

To provide an article attachment improving the convenience and a moving measurement device.SOLUTION: An article attachment which is attached to a device having an operation mechanism, includes a holding member which can hold an article, a fixation member which fixes the holding member to the device, and a rotational member which can rotate the article in association with an operation of the operation mechanism.SELECTED DRAWING: Figure 11

Description

Technical Field

[0001] The present invention relates to an article mounting device and a movement measurement device.

Background Art

[0002] There is known a moving body device that measures the state of the external environment (surrounding vehicles, road conditions, tunnel conditions, etc.) by attaching an imaging device such as a camera to a moving body (vehicle, drone, etc.). As an imaging device for measuring the state of the external environment, a camera having a wide-angle lens, a plurality of cameras (stereo camera), LiDAR, etc. are already known.

[0003] Patent Document 1 discloses an article mounting device for attaching a stereo camera to a vehicle.

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, a moving body such as a vehicle is provided with an operating mechanism such as a rear hatch door. In the configuration of the article mounting device disclosed in Patent Document 1, since the article mounting device is installed on the rear hatch door of the vehicle, there is a possibility that the opening and closing operation of the rear hatch door may be hindered when the rear hatch door is opened and closed. For this reason, in a moving body provided with an article mounting device, improvement in convenience when operating the operating mechanism is required.

[0005] Therefore, an object of the present invention is to provide an article mounting device and a moving body that improve convenience.

Means for Solving the Problems

[0006] According to one aspect of the present embodiment, an article mounting device attached to a device having an operating mechanism comprising a holding member capable of holding an article, and a fixing member for fixing the holding member to the device and a rotating member capable of rotating the article along with the operation of the operating mechanism. The article has an abutting member against which the operating mechanism can abut when the operating mechanism operates. .

Advantages of the Invention

[0007] According to the present invention, it is possible to provide a highly convenient article mounting device and a movement measurement device.

Brief Description of the Drawings

[0008]

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Figure 14

Embodiment for Carrying out the Invention

[0009] The embodiments for carrying out the present invention will be described below. For the same members, etc., the same reference numerals will be given and the description thereof will be omitted.

[0010] The mobile measurement device 10 provided with the measurement system according to this embodiment will be described with reference to FIGS. 1 to 4.

[0011] FIG. 1 is a side view for explaining the mobile measurement device 10 provided with the measurement system according to this embodiment. In the following description, the traveling direction of the vehicle 20 is the forward direction (forward movement direction), the reverse direction thereof is the rear direction (reverse movement direction), the gravity direction is the downward direction, the reverse direction thereof is the upward direction, the horizontal right direction as viewed in the traveling direction is the right direction, and the reverse direction thereof is the left direction. Also, the traveling direction of the vehicle 20 is indicated by a white arrow. Further, the imaging direction of the measurement device 30 is indicated by a dashed-dotted line. Further, the imaging range of the measurement device 30 is indicated by a broken line.

[0012] The mobile measurement device 10 is a device that measures the state of the road surface 100 while traveling on the road surface 100. The mobile measurement device 10 includes a vehicle (mobile body) 20, a measurement device 30 attached to the vehicle 20, and an article attachment fixture 40.

[0013] The vehicle (device) 20 is configured to be able to travel (move) on the road surface 100. An article attachment fixture 40 is provided on the upper surface (first surface) of the vehicle 20. A rear hatch door (operating mechanism) 21 that can be opened and closed is provided on the rear surface (second surface) different from the upper surface of the vehicle 20.

[0014] The article attachment fixture 40 is attached from the upper surface of the vehicle 20 to the rear. The measurement device 30 is attached to the article attachment fixture 40 so that the imaging direction is substantially downward. Note that the measurement device 30 is attached within the movable range of the rear hatch door 21 during measurement.

[0015] With such a configuration, while traveling in the traveling direction on the road surface 100, the movement measurement device 10 images the road surface 100 with the stereo camera 31 (see FIG. 2 described later) in the measurement device 30, so that it can measure the unevenness of the road surface 100, which is the object to be measured, and the state of the road (such as whether the white line has disappeared). More specifically, it can measure road surface property values such as the flatness of the road (unevenness in the traveling direction), the amount of rutting, and the cracking rate. Then, based on these three road surface property values, the MCI (Maintenance Control Index) can be obtained. The MCI may be obtained by transmitting the measurement data to an external device such as a PC or a tablet terminal after measurement, or may be obtained while moving for measurement with a PC installed in the vehicle 20.

[0016] Next, the measurement device 30 will be further described. FIG. 2 is a cross-sectional view of the measurement device 30 seen from the side. FIG. 3 is a perspective view of the measurement device 30 seen from below.

[0017] The measurement device 30 includes a stereo camera (measurement instrument, imaging device) 31 having lenses 32a and 32b, a camera mount (measurement instrument fixing part) 33 for fixing the stereo camera 31, and a protective cover 34 for covering the stereo camera 31.

[0018] The stereo camera 31 is a camera having two lenses 32a and 32b, and can measure the distance to the measurement target by processing the obtained image data. Note that although the imaging device included in the measuring device 30 will be described as being the stereo camera 31, it is not limited to this. For example, when it is desired to check the state of the subject, a configuration including a camera having a single-lens as the imaging device may be used. Also, the number of imaging devices included in the measuring device 30 is not limited to one, and may be two or more. By adopting a configuration including a plurality of imaging devices, it is possible to acquire measurement data over a wider range. Further, by using the lenses 32a and 32b of the stereo camera 31 as wide-angle lenses with a focal length of 35 mm or less, it may be possible to acquire measurement data over a wider range. Also, as the imaging device of the measuring device 30, a configuration including LiDAR may be used.

[0019] The stereo camera 31 is attached to the article attachment tool 40 (see FIG. 1) via a camera mount (measuring instrument fixing portion) 33. Note that the camera mount 33 may have an angle adjustment function for adjusting the angle.

[0020] As shown in FIG. 2, the imaging direction of the stereo camera 31 of the measuring device 30 has a predetermined angle with respect to the traveling direction of the vehicle 20 (see FIG. 1). In other words, when the measuring device 30 is viewed from the width direction (side), the imaging direction of the stereo camera 31 indicated by the dashed line is inclined at a predetermined angle θ1 in the reverse direction (rearward) of the traveling direction of the vehicle 20 with respect to the vertical direction (up and down direction) indicated by the two-dot chain line.

[0021] The protective cover 34 is composed of, for example, a resin plate and an aluminum frame that supports the resin plate, and forms a box body having an opening on the lower surface side (that is, on the imaging direction side of the imaging device). Note that the stereo camera 31 is disposed in the internal space of the protective cover 34. The protective cover 34 prevents light from the light source 200 (see FIG. 8 described later) from directly entering the lenses 32a and 32b. Also, the protective cover 34 protects the stereo camera 31 from rain, wind, etc.

[0022] Next, the measuring device 30 and the article mounting fixture 40 will be further described with reference to FIGS. 4 to 6. FIG. 4 is a perspective view of the measuring device 30 and the article mounting fixture 40. FIG. 5 is a perspective view of the measuring device 30 and the article mounting fixture 40 with the protective cover 34 removed. FIG. 6 is a perspective view of the measuring device 30 and the article mounting fixture 40 with the stereo camera 31 and the camera mount 33 removed.

[0023] The article mounting fixture 40 includes a holding member 41 capable of holding the measuring device 30 (camera mount 33), a fixing member 42 fixed to the vehicle 20, and a rotating member 43 that rotatably supports the holding member 41 with respect to the fixing member 42.

[0024] The holding member 41 has a frame body 411 and a holding portion 412 fixed to the rear side of the frame body 411. The holding portion 412 holds the stereo camera 31 and the camera mount 33.

[0025] The fixing member 42 has a frame body 421 and a locking portion 422 that abuts against the holding member 41 (frame body 411).

[0026] The rotating member 43 has a bearing 431 fixed to the frame body 411, a bearing 432 fixed to the frame body 421, and a shaft body 433 inserted through the bearing 431 and the bearing 432. Thereby, the holding member 41 is rotatably supported with the shaft body 433 as a rotation axis. Further, the bearing 432 is provided on the front side of the center of the frame body 421 in the front-rear direction. Thereby, the distance (rotation radius) between the shaft body 433 serving as the rotation axis and the holding portion 412 is ensured, and the moving distance of the holding portion 412 when the holding member 41 rotates is ensured.

[0027] Also, the rotation of the holding member 41 is locked by the locking portion 422 of the fixing member 42.

[0028] In addition, in the first embodiment, the measuring device 30 (protective cover 34) attached to the article mounting fixture 40 is provided with a contact portion 345 that contacts the rear hatch door 21 when the rear hatch door 21 is opened. The contact portion 345 is preferably composed of a sliding member with good slidability (for example, a sliding member such as POM or PA) or a rotatable roller or the like. The contact portion 345 will be described later with reference to FIG. 11.

[0029] <Detachment of the protective cover 34> The detachment of the protective cover 34 will be further described with reference to FIG. 7. FIG. 7 is a view of the measuring device 30 seen from the opening side. A bracket 342 is provided inside the protective cover 34. The bracket 342 is fixed to the camera mount 33 with a fastening member 343 such as a bolt. Thereby, the fastening operation between the camera mount 33 and the protective cover 34 can be performed from the opening 341 of the protective cover 34.

[0030] FIG. 8 is a diagram for explaining the mounting angle of the protective cover 34 of the measuring device 30. Here, as shown in FIG. 8(a), let the angle formed by the plane perpendicular to the lower end of the protective cover 34 and the plane parallel to the road surface be θ. In other words, the opening surface of the opening 341 of the protective cover 34 is inclined in the direction of gravity, and the inclination formed by the opening surface of the opening 341 and the plane perpendicular to the direction of gravity is θ.

[0031] As shown in FIG. 8(b), the angle θ is preferably greater than 0°. Thereby, the visibility when the operator attaches and detaches the protective cover 34 is improved, and the workability is improved.

[0032] Also, as shown in FIG. 8(c), the angle θ is preferably less than 25°. Thereby, it is possible to suppress the light irradiated from the light source 200 such as the sun from entering the protective cover 34 through the opening 341.

[0033] That is, it is more preferable that the angle θ satisfies 0° < θ < 25°. This enables both ensuring visibility when an operator attaches and detaches the protective cover 34 and ensuring a function of suppressing incidence of light irradiated from a light source 200 such as the sun into the protective cover 34, thereby improving convenience.

[0034] <Detachment and attachment of the stereo camera 31 and the camera mount 33> The detachment and attachment of the stereo camera 31 and the camera mount 33 will be described with reference to FIGS. 9 and 10. FIG. 9(a) is a view of the stereo camera 31, the camera mount 33, and the article attachment device 40 as seen from below, FIG. 9(b) is a side view, and FIG. 9(c) is a side view for explaining a fixing method of the holding member 41 and the camera mount 33 with the omission of illustration of the fall prevention part 414.

[0035] The holding part 412 includes a bracket (article fixing part) 413 and a fall prevention part (article support part) 414. The bracket 413 is fixed to the holding part 412. The camera mount 33 is fixed to the bracket 413 with a fastening member 415 such as a bolt from below the camera mount 33. Thereby, the fastening operation between the camera mount 33 and the protective cover 34 can be performed from the opening 341 of the protective cover 34.

[0036] Further, the fall prevention part 414 has a receiving part 414a. Thereby, it is possible to prevent the stereo camera 31 and the camera mount 33 from falling backward due to the weight of the stereo camera 31. That is, as shown in FIG. 9(b), the receiving part 414a of the fall prevention part 414 is installed so as to be located on the camera side of the camera mount 33. Further, the receiving part 414a has a shape along the surface on the camera side of the camera mount 33.

[0037] FIG. 10 is a diagram for explaining when the camera mount 33 is attached. FIG. 10(a) is a side view when the camera mount 33 is attached to the article attachment device 40 according to the present embodiment. FIG. 10(b) is a side view when the camera mount 33 is attached to the article attachment device according to the reference example.

[0038] Here, the article mounting device according to the reference example shown in FIG. 10(b) differs from the article mounting device 4 of the present embodiment in that it does not have a fall prevention portion 414. Other configurations are the same, and redundant descriptions are omitted. When attaching the camera mount 33 to the holding member 41 of the article mounting device according to the reference example, the camera mount 33 is placed on the bracket 413 and fixed with a fastening member 415. Here, before fastening the camera mount 33 to the bracket 413 with the fastening member 415 (see FIG. 9(c)), the stereo camera 31 and the camera mount 33 may fall backward due to their own weights and fall to the ground (see the white arrow).

[0039] On the other hand, the article mounting device 4 of the present embodiment shown in FIG. 10(a) includes a fall prevention portion 414. When attaching the camera mount 33 to the holding member 41 of the article mounting device according to the present embodiment, the camera mount 33 is placed on the bracket 413 and fixed with a fastening member 415. Here, even when the stereo camera 31 and the camera mount 33 fall backward due to their own weights before fastening the camera mount 33 to the bracket 413 with the fastening member 415 (see FIG. 9(c)), the receiving portion 414a supports the surface of the camera mount 33 on the stereo camera 31 side, thereby restricting the fall of the camera mount 33. Thereby, the fall of the stereo camera 31 and the camera mount 33 to the ground can be prevented. In addition, the workability when attaching and detaching the camera mount 33 to and from the holding member 41 can be improved.

[0040] <Article mounting device 40> Next, the operation of the article mounting device 40 will be described with reference to FIG. 11. FIG. 11 is a diagram for explaining the operation of the article mounting device 40 according to the first embodiment, where (a) is a side view showing a state where the rear hatch door 21 is closed, and (b) is a side view showing a state where the rear hatch door 21 is open.

[0041] As shown in Fig. 11(a), when the rear hatch door 21 is in the closed state, the holding member 41 rotatable about the shaft body 433 as the rotation axis receives a clockwise moment due to the self-weight of the measuring device 30. Further, since the holding member 41 is locked by the locking portion 422 of the fixing member 42, the rotation of the holding member 41 is locked. Thereby, the inspection of the road surface 100 and the like can be performed using the measuring device 30.

[0042] Note that the article mounting fixture 40 may include a rotation fixing portion (rotation fixing member) 44 that fixes the holding member 41 at the position where the holding member 41 is locked by the locking portion 422. Fig. 12 is a diagram for explaining the operation of the article mounting fixture 40 and the rotation fixing portion 44. Fig. 12(a) is a diagram showing a state where the holding member 41 is fixed by the rotation fixing portion 44. Fig. 12(b) is an enlarged view for explaining the rotation fixing portion 44. Fig. 12(c) is a perspective view of the detachable member 443 of the rotation fixing portion 44. Fig. 12(d) is a diagram showing a state where the fixing of the holding member 41 by the rotation fixing portion 44 is released and the holding member 41 is swung. Note that in Fig. 12, the illustration of the protection cover 34 is omitted.

[0043] The rotation fixing portion 44 includes a member 441 fixed to the holding member 41, a member 442 fixed to the fixing member 42, and a detachable member 443.

[0044] The detachable member 443 may be, for example, a bolt as shown in Fig. 12(c). The detachable member 443 has a threaded portion and an annular gripping portion. The member 441 has, for example, a threaded hole that engages with the threaded portion of the detachable member 443. The member 442 has, for example, a through hole through which the threaded portion of the detachable member 443 is inserted.

[0045] As shown in FIGS. 12(a) and 12(b), by inserting the threaded portion of the detachable member 443 into the insertion hole of the member 442 and screwing it with the threaded hole of the member 441, the member 441 and the member 442 are fixed by the detachable member 443. That is, the holding member 41 is fixed to the fixing member 42 by the rotation fixing portion 44. Thereby, it is possible to prevent the holding member 41 from swinging when the vehicle 20 is running. Further, by removing the detachable member 443, as shown in FIG. 12(d), the holding member 41 can be swung.

[0046] FIG. 13 is a diagram for explaining the rotation fixing portion 44A. The rotation fixing portion 44A includes a member 441A fixed to the holding member 41, a member 442A fixed to the fixing member 42, and a detachable detachable member 443A. As shown in FIG. 13, the rotation fixing portion 44A may be configured such that the rotation can be fixed at an arbitrary angle within the range of 0° < θ < 25°, where θ is the angle formed by the plane perpendicular to the lower end of the protective cover 34 and the plane parallel to the road surface. By adopting such a configuration, it is possible to achieve both ensuring visibility when the operator attaches and detaches the protective cover 34 and ensuring the function of suppressing the incidence of light irradiated from a light source 200 such as the sun into the protective cover 34, thereby improving convenience.

[0047] Also, as shown in FIG. 11(b), when opening the rear hatch door 21, the rear hatch door 21 abuts against the contact portion 345 of the measuring device 30 (protective cover 34). Then, by further opening the rear hatch door 21, the holding member 41 and the measuring device 30 can rotate about the shaft body 433 as the rotation axis due to the load received by the contact portion 345 from the rear hatch door 21.

[0048] Thereby, in the mobile measuring device 10 in which the measuring device 30 is attached to the vehicle 20 using the article mounting fixture 40, the rear hatch door 21 can be easily opened and closed, improving convenience.

[0049] Note that the configurations of the measuring device 30 and the article mounting fixture 40 are not limited to this. Next, the operation of the article mounting fixture 40A according to the second embodiment will be described with reference to FIG. 14. FIG. 14 is a diagram for explaining the operation of the article mounting fixture 40A according to the second embodiment, where (a) is a side view showing the state where the rear hatch door 21 is closed, and (b) is a side view showing the state where the rear hatch door 21 is open.

[0050] In the article mounting fixture 40 according to the first embodiment shown in FIG. 11 and the like, the contact portion 345 is provided on the measuring device 30 (protective cover 34). On the other hand, in the article mounting fixture 40A according to the second embodiment shown in FIG. 14, the contact portion 416 is provided on the article mounting fixture 40 (holding member 41), which is different. Other configurations are the same, and duplicate explanations are omitted. Further, the measuring device 30A attached to the article mounting fixture 40A includes a stereo camera 31 and a camera mount 33. Also, in FIG. 14, although the illustration of the protective cover 34 of the measuring device 30A is omitted, it is preferable that the measuring device 30A includes a protective cover 34. Also, the protective cover 34 of the measuring device 30A may not include the contact portion 345.

[0051] As shown in FIG. 14(a), in the state where the rear hatch door 21 is closed, the holding member 41 rotatable about the shaft body 433 as a rotation axis receives a clockwise moment due to the self-weight of the measuring device 30. Further, since the holding member 41 is locked by the locking portion 422 of the fixing member 42, the rotation of the holding member 41 is locked.

[0052] As shown in FIG. 14(b), when opening the rear hatch door 21, the rear hatch door 21 comes into contact with the contact portion 416 of the article mounting fixture 40 (holding member 41). Then, by further opening the rear hatch door 21, the holding member 41 and the measuring device 30 can rotate about the shaft body 433 as a rotation axis due to the load received by the contact portion 416 from the rear hatch door 21.

[0053] As a result, in the mobile measurement device 10 in which the measurement device 30 is attached to the vehicle 20 using the article attachment device 40A, the rear hatch door 21 can be easily opened and closed, and the convenience can be improved. Further, with the article attachment device 40A, the rear hatch door 21 can be easily opened and closed even in a state where the measurement device 30A is removed, and the convenience can be improved.

[0054] As described above, the embodiments of the mobile measurement device 10 and the like have been described. However, the present invention is not limited to the above embodiments and the like, and various modifications and improvements can be made within the scope of the gist of the present invention described in the claims.

[0055] The mobile measurement device 10 has been described as using the vehicle 20 as a moving body, but is not limited thereto. The moving body may be, for example, a traveling body that travels on an inspection surface, or a drone that flies along the inspection surface.

[0056] Although the stereo camera 31 has been described as being used as the measuring instrument of the measuring devices 30a and 30b, it is not limited thereto. The measuring instrument may be, for example, a monocular camera, a wide-angle camera, or a LiDAR.

[0057] The mobile measurement device 10 has been described as inspecting the road surface 100, but is not limited thereto. It may be applied to a configuration for inspecting the side wall of the road surface 100, the inner wall of a tunnel (side wall, ceiling wall), etc.

[0058] Further, although the article attachment devices 40 and 40A have been described as attaching the measurement device (article) 30 within the operating range of the rear hatch door (operating mechanism) 21 of the vehicle (device) 20, it is not limited thereto. It may be applied to an article attachment device that attaches an article within the operating range of the operating mechanism of another device.

Explanation of Reference Numerals

[0059] 10 Mobile measurement device (moving body) 20 Vehicle (device) 21 Rear hatch door (operating mechanism) 30 Measuring device (article) 31 Stereo camera (imaging device) 33 Camera mount (measuring instrument fixing part) 34 Protective cover 40 Article mounting tool 41 Holding member 42 Fixing member 43 Rotating member 44 Rotation fixing part (rotation fixing member) 411 Frame 412 Holding part 413 Bracket (article fixing part) 414 Fall prevention part (article support part) 414a Receiving part (article support part) 415 Fastening member (article fixing part) 421 Frame 422 Locking part 431 Bearing 432 Bearing 433 Shaft body 341 Opening 342 Bracket 343 Fastening member 345 Contact part 100 Road surface (object) 200 Light source

Prior art documents

Patent documents

[0060]

Patent Document 1

Claims

1. An article mounting fixture attached to a device having an operating mechanism, comprising: a holding member capable of holding an article; a fixing member for fixing the holding member to the device; a rotating member capable of rotating the article in accordance with the operation of the operating mechanism. The article has an abutting member against which the operating mechanism can abut when the operating mechanism operates. Article mounting fixture.

2. An article mounting fixture attached to a device having an operating mechanism, comprising: a holding member capable of holding an article; a fixing member for fixing the holding member to the device; a rotating member capable of rotating the article in accordance with the operation of the operating mechanism. It has a rotation fixing member for fixing the rotation of the article by the rotating member, and the rotation fixing member can fix the rotation at an arbitrary rotation angle. Article mounting fixture.

3. An article mounting fixture attached to a device having an operating mechanism, comprising: a holding member capable of holding an article; a fixing member for fixing the holding member to the device; a rotating member capable of rotating the article in accordance with the operation of the operating mechanism. The holding member has an article fixing portion for fixing the article from below, and an article support portion for suppressing the tipping of the article. Article mounting fixture.

4. The holding member has an abutting member against which the operating mechanism can abut when the operating mechanism operates. The article mounting fixture according to claim 2 or claim 3.

5. The operating mechanism operates toward the holding member. The article mounting fixture according to any one of claims 1 to 4.

6. It has a locking portion for locking the rotation of the article by the rotating member. The article mounting fixture according to any one of claims 1 to 5.

7. The article is detachably provided with respect to the holding member. The article mounting fixture according to any one of claims 1 to 6.

8. A measuring device as the article, the article mounting fixture according to any one of claims 1 to 7, and a moving body as the device. A mobile measuring device comprising.

9. The measuring device comprises an imaging device, and a cover having an opening and surrounding the imaging device. The mobile measuring device according to claim 8.

10. The opening surface of the cover is inclined in the direction of gravity, and the inclination formed by the opening surface and a plane perpendicular to the direction of gravity is greater than 0° and less than 25°. The mobile measuring device according to claim 9.

11. A measuring device and a moving body A mobile measurement device comprising an article attachment device attached to the mobile body, wherein the article attachment device comprises a holding member capable of holding the measurement device, a fixing member for fixing the holding member to the mobile body, and a rotating member capable of rotating the measurement device in accordance with the operation of an operation mechanism of the mobile body, wherein the measurement device comprises an imaging device, and a cover having an opening and surrounding the imaging device, wherein an opening surface of the cover faces with an inclination in the direction of gravity, and an inclination formed by the opening surface and a plane perpendicular to the direction of gravity is greater than 0° and less than 25°, a mobile measurement device.

Images