JP2005265549A - Object detector, surface foreign substance detector and clipping arrester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an object detector capable of making attaching structure simple and easily widening objective range. <P>SOLUTION: A surface foreign substance detector 1 is provided with a luminescent part 3 emitting light, a reflection part 5 having a reflection surface 4 for reflecting the light from the luminescent part 3 and directing to a front glass 2 and changing the light direction within the objective range in the front glass 2 by turning the reflection surface 4, a light reception part 6 for receiving the light reflected by the front glass 2, and a case 7 for containing all of them. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an object detection device, and in particular, a surface foreign object detection device that detects an object such as a raindrop on a vehicle glass and a pinch that detects an object between a vehicle frame (for example, a slide door frame or a power window glass frame). The present invention relates to a prevention device.

  Conventionally, some object detection devices include a light emitting unit and a light receiving unit. These include a raindrop detection device (surface foreign object detection device) for detecting raindrops on a vehicle windshield, and an open / close drive. There is an anti-pinch device for detecting an object on a track of a vehicle opening / closing body.

  As a raindrop detection device, there is a device that detects a raindrop and the like while providing a light emitting portion and a light receiving portion so as to be relatively movable with respect to a windshield (object) (for example, , See Patent Document 1). In such a raindrop detection apparatus, it is possible to detect raindrops and the like on a locus corresponding to the locus on which the light emitting unit and the light receiving unit move relative to the windshield (object). Can be driven automatically.

In addition, as a pinching prevention device, a light emitting unit and a light receiving unit (optical wireless control device) are provided on the vehicle body and the sliding door, respectively, on the slide door track (between the vehicle body frame and the sliding door frame). There is one that detects an object (see, for example, Patent Document 2). In such an anti-pinch device, an object can be detected without particularly touching the object. For example, it is possible to prevent the sliding door from being closed based on the detection of the object.
Japanese Patent Laid-Open No. 10-62336 JP 2002-256664 A

  However, in the raindrop detection apparatus as described above, the mounting structure (mechanism for movement) is complicated due to the configuration in which the light emitting unit and the light receiving unit are moved to detect raindrops on the locus corresponding to the locus. Become. Further, in order to widen the detection target range, it is difficult to make the movement locus large and complicated.

  In addition, in the above-described pinching prevention device, the light emitting unit and the light receiving unit (optical wireless control device) are provided not only on the vehicle body but also on the sliding door that moves, so that the mounting structure is complicated. Further, in order to widen the detection target range, it is difficult to increase the device and the arrangement space.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an object detection device and a surface foreign matter detection device that can easily widen the target range while simplifying the mounting structure. And to provide an anti-pinch device.

  In the first aspect of the present invention, the light-emitting unit that emits light, and a reflection surface for reflecting the light from the light-emitting unit and directing the light toward the object, the reflection surface is rotated to change the direction of the light. The gist of the present invention is an object detection apparatus including a reflection unit for changing within a target range of the object and a light receiving unit for receiving light reflected by the object.

  According to a second aspect of the present invention, in the object detection device according to the first aspect, the reflecting portion includes a rotating portion having the reflecting surface and a pedestal portion for rotatably supporting the rotating portion. The pedestal portion is provided with a magnetic field generating portion for generating a constant magnetic field, and the rotating portion is provided with a coil portion.

  According to a third aspect of the present invention, in the object detection device according to the second aspect, the rotation unit is arranged on the intermediate rotation unit that is rotatably supported with respect to the pedestal unit. Is supported so as to be pivotable about an axis that is 90 degrees different from that of the pedestal, and is supported by the pedestal, and an intermediate coil is provided in the intermediate rotation.

  According to a fourth aspect of the present invention, in the object detection device according to the first aspect, the reflecting portion includes a rotating portion having the reflecting surface and a pedestal portion for rotatably supporting the rotating portion. The rotating part is provided with a permanent magnet for generating a constant magnetic field, and the pedestal part is provided with a coil part.

  According to a fifth aspect of the present invention, in the object detection device according to the fourth aspect, the rotating portion is arranged on the intermediate rotating portion that is rotatably supported with respect to the pedestal portion. Is supported so as to be rotatable about an axis that is 90 degrees different from that of the pedestal portion, and a permanent magnet is provided on the intermediate rotation portion.

  According to a sixth aspect of the present invention, in the object detection device according to the third or fifth aspect, the rotating portion and the intermediate rotating portion are made of a plate material via a rotation allowing portion that allows their rotation. The fixed portion fixed to the pedestal portion and the intermediate rotation portion are integrally formed from the plate material through an intermediate allowance portion that allows the rotation thereof.

  According to a seventh aspect of the present invention, in the object detection device according to any one of the third, fifth, and sixth aspects, the intermediate rotation portion is formed inside the pedestal portion, and the rotation portion is It was formed inside the intermediate rotation part.

According to an eighth aspect of the present invention, in the object detection device according to the seventh aspect, the rotating portion is formed in a circular shape.
According to a ninth aspect of the present invention, in the object detection device according to any one of the first to eighth aspects, the light emitting unit, the reflecting unit, and the light receiving unit are integrally disposed.

  The gist of the invention according to claim 10 is the surface foreign object detection device that includes the object detection device according to any one of claims 1 to 9 and detects an object on the vehicle glass as the object.

  The invention according to claim 11 is characterized in that the object detection device according to any one of claims 1 to 9 is provided, and the pinching prevention device that detects an object between the vehicle frame as the target object. .

(Function)
According to the first aspect of the present invention, since the reflecting surface is rotationally driven by the reflecting portion and the direction of light is changed within the target range of the target, the target is based on the amount of light received by the light receiving portion. It is possible to detect whether or not an object other than is present in the target range. In addition, since the direction of light is changed by rotationally driving the reflection surface, the target range can be easily widened (by simply increasing the rotation (tilting) angle of the reflection surface). In addition, since the light emitting unit, the reflecting unit, and the light receiving unit can be fixed to the target object at fixed locations (necessary to be relatively movable with respect to the target object as in the prior art (Patent Document 1). The mounting structure is simplified.

  According to a second aspect of the present invention, the reflecting portion includes a rotating portion having the reflecting surface and a pedestal portion for rotatably supporting the rotating portion. Is provided with a magnetic field generator for generating a constant magnetic field, and the rotating part is provided with a coil part. By supplying a current to the coil part, the rotating part having a reflecting surface is rotated by a magnetic force. Can be made. And since it is the structure which provides a coil part in a rotation part, the weight reduction of a rotation part can be achieved compared with the case where a permanent magnet is provided in a rotation part.

  According to a third aspect of the present invention, the rotating portion rotates around an axis that is 90 degrees different from the intermediate rotating portion on the intermediate rotating portion that is rotatably supported with respect to the pedestal portion. It is supported with respect to the said base part by being supported so that a movement is possible. Since the intermediate rotating portion is provided with an intermediate coil portion, by supplying current to the intermediate coil portion and the coil portion, the rotating portion having the reflecting surface is changed by two axes that differ by 90 degrees due to magnetic force. Each can be driven to rotate at the center.

  According to the invention described in claim 4, the reflecting portion includes a rotating portion having the reflecting surface and a pedestal portion for rotatably supporting the rotating portion, and the rotating portion. Is provided with a permanent magnet for generating a constant magnetic field, and the pedestal part is provided with a coil part. By supplying a current to the coil part, the rotating part having a reflecting surface is rotated by a magnetic force. be able to. And since it is the structure which provides a permanent magnet instead of a coil part in a rotation part, the wiring structure for supplying an electric current to the member to rotate becomes unnecessary.

  According to the fifth aspect of the present invention, the rotating portion rotates on an intermediate rotating portion that is rotatably supported with respect to the pedestal portion at an axis center that is 90 degrees different from the intermediate rotating portion. It is supported with respect to the said base part by being supported so that a movement is possible. Since the intermediate rotating portion is provided with a permanent magnet, the rotating portion having the reflecting surface is driven to rotate about two axes different by 90 degrees by magnetic force by supplying current to the coil portion. Can do.

  According to the invention described in claim 6, the rotating portion and the intermediate rotating portion are integrally formed from the plate material via the rotation allowing portion allowing the rotation thereof, and are fixed to the pedestal portion. The part and the intermediate rotation part are integrally formed of a plate material via an intermediate allowance part that allows the rotation thereof. Therefore, it is possible to turn the intermediate turning portion and the turning portion with a simple plate member (without requiring a separate shaft or the like).

  According to the seventh aspect of the present invention, since the rotating portion is formed further inside the intermediate rotating portion formed inside the pedestal portion, the rotating portion can be made small and light. It can be pivoted and driven quickly.

According to the eighth aspect of the present invention, since the rotating part is formed in a circular shape, the rotating part can be lighter as it is separated from the center of the shaft, and the rotating part can be driven to rotate quickly. .
According to the ninth aspect of the present invention, the light emitting portion, the reflecting portion, and the light receiving portion are integrally disposed, so that the mounting structure thereof is further simplified.

  According to the invention described in claim 10, in the surface foreign object detection device for detecting an object on the vehicle glass, it is possible to easily widen the target range while simplifying the mounting structure.

  According to the eleventh aspect of the present invention, in the pinching prevention device for detecting an object up to a vehicle frame (for example, a frame of a power window glass or a frame for a sliding door), the object structure is simplified while the mounting structure is simplified. Can be easily widened.

  As described above in detail, according to the first to ninth aspects of the invention, it is possible to provide an object detection device that can easily widen the target range while simplifying the mounting structure.

In addition, according to the invention described in claim 10, it is possible to provide a surface foreign matter detecting device capable of easily widening the target range while simplifying the mounting structure.
According to the eleventh aspect of the present invention, it is possible to provide an anti-pinch device that can easily widen the target range while simplifying the mounting structure.

  Hereinafter, an embodiment in which the present invention is embodied in a surface foreign object detection device will be described with reference to FIGS. As shown in FIG. 1, the surface foreign object detection device 1 is provided in the vicinity of an object in a vehicle and a windshield 2 as a vehicle glass, and detects objects such as raindrops and bird droppings on the windshield 2.

  As schematically shown in FIG. 2, the surface foreign object detection device 1 includes a light emitting unit 3 that emits light and a reflective surface 4 that reflects light from the light emitting unit 3 and directs it toward the windshield 2. 4 is rotated to change the direction of light within the target range of the windshield 2, and the light receiving section 6 is for receiving light (part thereof) reflected by the windshield 2. Prepare. In the surface foreign matter detection device 1 of the present embodiment, all of the light emitting unit 3, the reflecting unit 5, and the light receiving unit 6 are accommodated in a case 7 and are integrally disposed. That is, the surface foreign matter detection device 1 is provided with its case 7 attached to the vicinity of the windshield 2.

As shown in FIGS. 3 and 4, the reflecting portion 5 includes a pedestal portion 11, four permanent magnets 12 as magnetic field generating portions, a plate-like member 13, a coil portion 14, and an intermediate coil portion 15. .
In the center of the upper surface (upper surface in FIG. 3) of the pedestal portion 11, a rectangular mounting portion 11a is formed by being recessed as viewed from above. In addition, a rectangular recess 11b as viewed from above is formed in the center of the upper surface (the upper surface in FIG. 3) of the mounting portion 11a. Further, on the upper surface (upper surface in FIG. 3) of the pedestal portion 11, magnet accommodating recesses 11c are formed so as to correspond to the (rectangular) sides of the mounting portion 11a (outside each side). . In addition, the magnet accommodation recessed part 11c is recessed deeply than the mounting part 11a mentioned above. And each magnet accommodation recessed part 11c accommodates and holds the permanent magnet 12, and this permanent magnet 12 generates a fixed magnetic field with respect to the part (plate-shaped member 13) of the mounting part 11a.

  The plate-like member 13 is formed by depositing a metal (for example, nickel) on the surface (upper surface in FIG. 3) of a silicon substrate as a plate material, and as shown in FIG. 4, a fixed portion 21 and an intermediate twist as an intermediate allowable portion. The shaft 22, the intermediate rotation portion 23, the rotation torsion shaft 24 as a rotation permission portion, and the rotation portion 25 are integrally formed. In the present embodiment, the upper surface (the upper surface in FIG. 3) of the rotating unit 25 on which metal is deposited constitutes the reflecting surface 4.

  Specifically, the fixing portion 21 is formed in the same shape as the upper surface of the mounting portion 11a of the pedestal portion 11, and is fixed to the mounting portion 11a. The intermediate rotation part 23 is formed on the inner side of the fixed part 21 via a twistable intermediate torsion shaft 22, and the rotation part 25 is intermediately rotated via a twistable rotation torsion shaft 24. It is formed inside (rectangular) the portion 23. The intermediate torsion shafts 22 are respectively extended from the centers of a pair of opposed (outer) sides of the intermediate rotation part 23 (that is, a pair), and are twisted (relative to the fixed part 21 and the intermediate rotation part 23). ) Allow rotation. Further, the rotating torsion shaft 24 extends from the center of a pair of opposed (outer) sides of the rotating portion 25 (that is, a pair) so as to be an axis center different from the intermediate torsion shaft 22 by 90 degrees. By twisting, the (relative) rotation of the intermediate rotation unit 23 and the rotation unit 25 is allowed. From these things, the rotation part 25 can be rotated on the biaxial center which differs 90 degree | times with respect to the fixing | fixed part 21 (pedestal part 11). In addition, the intermediate | middle rotation part 23 and the rotation part 25 are arrange | positioned in the position corresponding to the recessed part 11b of the mounting part 11a, and rotation is accept | permitted also because there is a clearance up and down. The intermediate rotating unit 23 is provided with an intermediate coil unit 15, and the rotating unit 25 is provided with a coil unit 14 (see FIG. 5).

  Specifically, as shown in FIG. 5, the intermediate coil unit 15 has a pair (one pair) at both ends in a direction orthogonal to the axial direction of the intermediate torsion shaft 22 on the lower surface (the lower surface in FIG. 3) of the intermediate rotation unit 23. Is provided. The intermediate coil unit 15 is connected to an external control unit (not shown) through a wiring 15 a that extends to the outside of the fixed unit 21 through the intermediate torsion shaft 22.

  In addition, as shown in FIG. 5, the coil portions 14 are respectively provided (one pair) at both ends in a direction orthogonal to the axial direction of the rotating torsion shaft 24 on the lower surface (the lower surface in FIG. 3) of the rotating portion 25. ing. The coil unit 14 is connected to an external control unit (not shown) through a wiring 14 a that extends to the outside of the fixed unit 21 through the rotating torsion shaft 24 and the intermediate torsion shaft 22.

  As shown in FIG. 2, the control unit rotationally drives the reflecting surface 4 (rotating unit 25) that reflects light from the light emitting unit 3 (see the broken line in FIG. 2) to change the direction of the light on the windshield 2. A current is supplied to the coil portion 14 and the intermediate coil portion 15 so as to be changed within the target range Z (see FIG. 1). Specifically, as shown in FIG. 1, the control unit of the present embodiment changes (moves) the direction of light from the upper left side of the windshield 2 (upper left in FIG. 1) to the right (see arrow S). Next, in order to repeat (scan) the operation of changing (moving) from the left to the right in the next lower line (see the two-dot chain line in FIG. 1), current is supplied to the coil unit 14 and the intermediate coil unit 15. Supply. In the present embodiment, by supplying an electric current to the coil portion 14, the reflecting surface 4 (the rotating portion 25) is caused by a magnetic force (by an attractive repulsive action with the permanent magnet 12) and the intermediate rotating portion. 23, the light is changed (moved) in the left-right direction of the windshield 2 (left-right direction in FIG. 1). In the present embodiment, the current is supplied to the intermediate coil portion 15 to fix the reflection surface 4 (the rotation portion 25) together with the intermediate rotation portion 23 by magnetic force (by the attractive repulsion action with the permanent magnet 12). By rotating and driving with respect to the portion 21, the direction of light is changed (moved) in the vertical direction of the windshield 2 (vertical direction in FIG. 1).

  The light receiving unit 6 receives a part of the light reflected by the windshield 2 and further reflected by the reflecting surface 4. Then, the control unit determines (detects) whether or not an object such as raindrops or bird droppings exists on the windshield 2 (target range Z) based on the amount of light received Q at the light receiving unit 6. Specifically, in the present embodiment, by setting the light reflection angle on the reflection surface 4 when the light direction is changed from the left side to the right side of the windshield 2 to increase from 90 degrees, When there is no object on the windshield 2, the amount of received light Q is set to gradually decrease as it changes to the right (that is, as time t advances) (characteristic of FIG. 6). X). In FIG. 6, the characteristic X for each line in the target range Z (see the two-dot chain line in FIG. 1) is illustrated. In the present embodiment, the light reflection angle at the reflection surface 4 when the light direction is changed from the upper side of the windshield 2 to the lower side (one line) is set to increase from 90 degrees. . That is, the uppermost characteristic X1 in FIG. 6 shows the characteristic corresponding to the uppermost line of the windshield 2 (target range Z). And the control part of this Embodiment determines (detects) that an object exists, when the light reception amount Q in each characteristic X for every line increases (when differential value dQ / dt becomes larger than 0). . FIG. 7 shows the characteristic Y when a large number of raindrops U (see FIG. 2) are present. Moreover, in the characteristic Y of FIG. 7, the same code | symbol (U) is attached | subjected to the part corresponding to the raindrop U for convenience. When the control unit of the present embodiment determines that there are objects such as raindrops and bird droppings in a preset amount (for example, in the case of the state shown in FIG. 7, there are many objects (raindrops)). Then, a control signal is output, and a vehicle wiper device (not shown) is driven to perform the wiping operation of the windshield 2.

Next, characteristic effects of the above embodiment will be described below.
(1) Since the reflection surface 4 (the rotation unit 25) is rotationally driven by the reflection unit 5 and the direction of the light is changed within the target range Z in the windshield 2, the light reception amount Q at the light reception unit 6 is Based on this, it can be determined (detected) whether or not an object exists on the windshield 2 (target range Z). Moreover, since the direction of light is changed by rotating the reflecting surface 4 (the rotating unit 25), the target range Z can be easily widened (by simply increasing the rotating (tilting) angle of the reflecting surface 4). can do. In addition, since the light emitting unit 3, the reflecting unit 5, and the light receiving unit 6 are fixed to the windshield 2 at fixed locations, respectively (as in the prior art (Patent Document 1), they can be moved relative to the object. Since there is no need to provide it), the mounting structure is simplified.

  (2) By supplying current to the intermediate coil unit 15 and the coil unit 14 respectively, the rotating unit 25 having the reflecting surface 4 is rotated 90 degrees by a magnetic force (by attractive repulsion with the permanent magnet 12). Can be freely rotated. Therefore, the direction of light can be easily changed in a continuous (or stepwise) manner over a wide range. And since it is the structure which provides the coil part 14 in the rotation part 25, the weight reduction of the rotation part 25 can be achieved compared with the case where a permanent magnet is provided in the rotation part, for example. As a result, the rotation unit 25 can be driven to rotate quickly. As a result, for example, it is possible to detect a wide range in a short time.

  (3) The rotating portion 25 and the intermediate rotating portion 23 are integrally formed via a twistable rotating torsion shaft 24, and the intermediate rotating portion 23 and the fixed portion 21 are twistable. The intermediate rotation part 23 and the rotation part 25 can be rotated while being simply configured with a single plate (plate member 13) (without requiring a separate shaft or the like). It can be. Therefore, the number of parts and assembly man-hours can be reduced.

  (4) Since the intermediate rotation part 23 is formed on the inner side (square) of the fixed part 21 and the rotation part 25 is formed on the inner side (square) of the intermediate rotation part 23, the rotation part 25 is made smaller. A light configuration can be obtained, and the rotating unit 25 can be driven to rotate quickly.

(5) Since all of the light emitting unit 3, the reflecting unit 5 and the light receiving unit 6 are accommodated in the case 7 and are integrally disposed, the mounting structure is further simplified (just fixing the case 7). .
The above embodiment may be modified as follows.

  In the above embodiment, the fixed portion 21, the intermediate rotation portion 23, and the rotation portion 25 in the plate-like member 13 are rectangular when viewed from the plane orthogonal direction of the plate-like member 13 (the outer and inner shapes thereof). Although formed, their shapes may be changed. For example, as shown in FIG. 8, the inner shape of the fixed portion 31, the outer and inner shapes of the intermediate rotation portion 32, and the outer shape of the rotation portion 33 may be changed to a circle. In this way, the intermediate rotation unit 32 and the rotation unit 33 can be configured to be lighter as they are separated from the center of the (rotation) axis, and the intermediate rotation unit 32 and the rotation unit 33 can be quickly rotated. It can be driven dynamically. Further, for example, as shown in FIG. 9, the shape of the fixing portion 41 is left as it is (substantially the same as the fixing portion 21 in the above embodiment), the inner shape of the intermediate rotation portion 42, and the outer side of the rotation portion 43. The shape may be changed to a circle. If it does in this way, it can be set as the structure lighter so that the rotation part 43 is spaced apart from the (rotation) axis center, and it becomes possible to drive the rotation part 43 agilely.

  In the above embodiment, a pair of intermediate torsion shafts 22 are provided between the fixed portion 21 and the intermediate rotation portion 23 in the plate-like member 13, and the intermediate rotation portion 23 and the rotation portion 25 are interposed between them. Is provided with a pair of rotational torsion shafts 24. However, as long as the intermediate rotational portion 23 and the rotational portion 25 are supported so as to be capable of rotating (tilting) (allowing rotation (tilting)), respectively. It may be changed to other configurations. For example, as shown in FIG. 10, one intermediate connecting portion 53 as an intermediate permissible portion is provided between the fixed portion 51 and the intermediate rotating portion 52 (between one opposing side), and the intermediate rotating portion One rotation connecting portion 55 as a rotation allowing portion may be provided (integrated molding) between 52 and the rotation portion 54 (between one opposing side). Further, for example, a separate shaft that connects the fixed portion (the mounting portion of the pedestal portion) and the intermediate rotation portion or between the intermediate rotation portion and the rotation portion so as to be rotatable is provided. It may be provided and implemented.

  In the above embodiment, the four permanent magnets 12 are provided on the pedestal portion 11, the intermediate coil portion 15 is provided on the intermediate rotation portion 23, and the coil portion 14 is provided on the rotation portion 25. As shown in FIG. 5, the intermediate coil part (coil part) 62 and the coil part 63 may be provided in the pedestal part 61, and the permanent magnets 66a and 66b may be provided in the intermediate rotation part 64 and the rotation part 65, respectively. That is, in this example, as shown in FIG. 12, the intermediate coil portion 15 and the coil portion 14 of the above embodiment are changed to permanent magnets 66a and 66b. Further, the pedestal portion 61 has a shape in which the portion of the magnet accommodating recess 11c in the pedestal portion 11 of the above embodiment is omitted, and the above-described implementation is performed at a position facing the permanent magnets 66a and 66b on the bottom surface 61b of the recess 61a. The intermediate coil part 62 and the coil part 63 (refer FIG. 13) of the same shape as the intermediate coil part 15 and the coil part 14 of a form are provided. Even in this case, by supplying currents to the intermediate coil unit 62 and the coil unit 63, the rotation unit 65 can be freely rotated around two axes different by 90 degrees by magnetic force. In addition, since the intermediate rotating portion 64 and the rotating portion 65 are provided with the permanent magnets 66a and 66b instead of the intermediate coil portion and the coil portion, a complicated wiring structure for supplying current to the rotating member is unnecessary. It becomes. In FIG. 13, wirings extending from the intermediate coil unit 62 and the coil unit 63 and connected to the control unit are illustrated in the same shape as the above embodiment (wirings 14 a and 15 a). In order to facilitate connection with the control unit, the terminals of the wiring may be concentrated at one place. Of course, the permanent magnet 12 of the above embodiment may be changed to a fixed coil portion as a magnetic field generating portion that generates a constant magnetic field, and may be a reflecting portion that does not use a permanent magnet.

  In the above embodiment, when the amount of received light Q is increased (when the differential value dQ / dt is greater than 0), it is determined (detected) that an object is present, but based on the amount of received light Q at the light receiving unit 6 The determination may be made by other methods. For example, the amount of light received when there is no object in each part of the target range Z is stored in advance in the storage unit, and whether the object exists by comparing the stored value with the amount of light received by the light receiving unit It may be determined whether or not. In this case, the pattern for changing the direction of light may be changed in any way. Even if there is a scratch or the like on the windshield 2, it is possible to prevent the scratch from being determined as an object by storing the amount of light received in that state in advance. .

  In the above embodiment, all of the light emitting unit 3, the reflecting unit 5, and the light receiving unit 6 are accommodated in the case 7 and are integrally disposed. Good. Even if it does in this way, since it is not necessary to provide with relative movement with respect to a target object like the prior art (patent document 1), the attachment structure becomes simple.

  In the above embodiment, the surface foreign object detection device 1 that detects an object on the windshield 2 is embodied, but may be embodied in another object detection device (or another device that includes the object detection device). Good.

  For example, as shown in FIG. 14, the object may be embodied in an anti-pinch device 73 that detects an object and an object between the frame 72 (of the power window glass 71) as a vehicle frame. This pinching prevention device 73 is configured in substantially the same manner as the surface foreign matter detection device 1 of the above embodiment. The pinching prevention device 73 is fixed to the front side of the vehicle door 74 and detects whether or not an object is present up to the frame 72 on the rear side of the vehicle door 74. In this case, a reflecting member 75 (indicated by a thick line in FIG. 14) for reflecting light from the pinching prevention device 73 (shown by a broken line arrow in FIG. 14) on the frame 72 on the rear side of the vehicle door 74. It is desirable to provide In this case, as in the above-described another example, the amount of light received when no object is present is stored in advance, and the stored value is compared with the amount of light received by the light receiving unit, so that the object exists. If it is determined whether or not an object is present, the closing operation of the power window glass 71 is switched to the stop or opening operation. In addition, when the object (the frame 72 on the rear side of the vehicle door 74) is in a single plane, the intermediate rotating part 23 (intermediate coil part 15) and the two permanent magnets of the surface foreign object detection device 1 in the above embodiment. 12 may be omitted and the anti-pinch device 73 may be configured. This prevents the object from being caught. In addition, in the pinching prevention device 73 for detecting an object between the power window glass 71 and the frame 72, the target range can be easily widened while simplifying the mounting structure.

  Further, for example, as shown in FIG. 15, the object may be embodied in a pinching prevention device 84 that detects an object and an object between frames 82 and 83 (with respect to the slide door 81) as a vehicle frame. This pinching prevention device 84 is configured in substantially the same manner as the surface foreign matter detection device 1 of the above embodiment. The pinching prevention device 84 is fixed to the upper portion at a position corresponding to the slide door 81 of the vehicle 85 (a position where the distance from the slide door 81 is close during the closing operation), and is fixed to the frame 82 and the slide door 81 of the slide door 81. It is detected whether or not an object exists between the lower frame 83 of the vehicle body. Also, in this case, as in the above-described another example, the amount of light received when no object is present is stored in advance, and the stored value is compared with the amount of light received by the light receiving unit to determine whether the object exists. If it is determined whether the object is present, the closing operation of the slide door 81 is switched to the stop or the opening operation. Further, when the object (frames 82 and 83) is in a single plane, the intermediate rotating part 23 (intermediate coil part 15) and the two permanent magnets 12 of the surface foreign object detection device 1 of the above embodiment are omitted. An anti-pinch device 84 may be configured. This prevents the object from being caught. Further, in the pinching prevention device 84 for detecting an object between the frames 82 and 83 with respect to the slide door 81, the target range can be easily widened while simplifying the mounting structure.

The technical idea that can be grasped from the above embodiments will be described below together with the effects thereof.
(A) The object detection device according to claim 9, further comprising a case that houses the light emitting unit, the reflecting unit, and the light receiving unit. If it does in this way, the attachment structure will only fix a case, and will become still easier.

The schematic diagram of the surface foreign material detection apparatus and windshield in this Embodiment. The schematic diagram of the surface foreign material detection apparatus and windshield in this Embodiment. Sectional drawing of the reflection part in this Embodiment. The top view of the reflection part in this Embodiment. The bottom view of the plate-shaped member in this Embodiment. Time-light-receiving amount characteristic diagram. Time-light-receiving amount characteristic diagram. The top view of the plate-shaped member in another example. The top view of the plate-shaped member in another example. The top view of the plate-shaped member in another example. Sectional drawing of the reflection part in another example. The top view of the reflection part in another example. The bottom view of the recessed part in the base part of another example. The schematic diagram of the vehicle door and pinching prevention apparatus in another example. The schematic diagram of the vehicle and pinching prevention apparatus in another example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Front glass as a target object and vehicle glass, 3 ... Light emission part, 4 ... Reflection surface, 5 ... Reflection part, 6 ... Light-receiving part, 11, 61 ... Base part, 12 ... Permanent magnet as a magnetic field generation part, 13 ... Plate-like members as plate materials, 14, 63 ... Coil portions, 15, 62 ... Intermediate coil portions, 21, 31, 41, 51 ... Fixing portions, 22 ... Intermediate torsion shafts as intermediate allowance portions, 23, 32, 42 , 52, 64 ... intermediate turning part, 24 ... turning torsion shaft as turning allowance part, 25, 33, 43, 54, 65 ... turning part, 53 ... intermediate connecting part as intermediate allowing part, 55 ... Rotation coupling part as a rotation permission part, 66a, 66b ... Permanent magnet, 72, 82, 83 ... Frame as object and vehicle frame, Z ... Target range.

Claims (11)

A light emitting section that emits light;
A reflecting surface for reflecting the light from the light emitting unit and directing the light toward the object, and rotating the reflecting surface to change the direction of the light within the target range of the object; ,
An object detection apparatus comprising: a light receiving unit for receiving light reflected by the object. The object detection apparatus according to claim 1,
The reflective portion is
A rotating part having the reflecting surface; and a pedestal part for rotatably supporting the rotating part. The pedestal part is provided with a magnetic field generating part for generating a constant magnetic field. An object detection apparatus characterized in that a coil part is provided in the moving part. The object detection device according to claim 2,
The rotating portion is supported by an intermediate rotating portion supported rotatably with respect to the pedestal portion so as to be rotatable about an axis that is 90 degrees different from the intermediate rotating portion. Supported against the part,
An object detection apparatus according to claim 1, wherein an intermediate coil part is provided in the intermediate rotation part. The object detection apparatus according to claim 1,
The reflective portion is
A rotating part having the reflecting surface; and a pedestal part for rotatably supporting the rotating part, wherein the rotating part is provided with a permanent magnet for generating a constant magnetic field; An object detection device characterized in that a coil part is provided in the part. The object detection device according to claim 4,
The rotating portion is supported by an intermediate rotating portion supported rotatably with respect to the pedestal portion so as to be rotatable about an axis that is 90 degrees different from the intermediate rotating portion. Supported against the part,
An object detection apparatus, wherein the intermediate rotation unit is provided with a permanent magnet. In the object detection device according to claim 3 or 5,
The rotating portion and the intermediate rotating portion are integrally formed of a plate material via a rotation allowing portion that allows the rotation, and a fixed portion that is fixed to the pedestal portion, and the intermediate rotating portion. The object detecting device is integrally formed from the plate member through an intermediate allowing portion that allows the rotation thereof. In the object detection device according to any one of claims 3, 5, and 6,
The object detection device according to claim 1, wherein the intermediate rotation part is formed inside the pedestal part, and the rotation part is formed inside the intermediate rotation part.   The object detection apparatus according to claim 7, wherein the rotation unit is formed in a circular shape. The object detection device according to any one of claims 1 to 8,
The object detection apparatus, wherein the light emitting unit, the reflection unit, and the light receiving unit are integrally provided.   A surface foreign object detection apparatus comprising the object detection apparatus according to claim 1, wherein the object detection apparatus detects an object on a vehicle glass as the object.   An anti-pinch device comprising the object detection device according to any one of claims 1 to 9 and detecting an object up to a vehicle frame as the object.

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