JP2006010643A - Device for driving thin plate, device for detecting object, device for detecting foreign materials on surface, and device for preventing clipping - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for driving a thin plate, which can obtain a high drive performance, has a simple structure and is manufactured easily. <P>SOLUTION: The device for driving the thin plate is equipped with a base section having a magnetic field producing section which produces a magnetic field; a fixed section 21 which is made up of a plate material and fixed to the base section; a thin plate member 13 which is formed at the fixed section 21 continuously via a connection support section 22 and has one tilting section 23, being supported at the connection support section 22 so as to able to tilt relative to the fixed section 21, while being centered by two axes A, B being at right angles to each other; and a plurality of coil sections 14-17 which are disposed at the tilting section 23 that should be tilted of the tilting section 23 about the two axes A, B. The connection support section 22 is in the form made up by connecting a first connection section 22a which extends parallel with respect to one axis A and perpendicularly with respect to the other axis B, with a second connection section 22b which extends perpendicularly with respect to the one axis A and parallel to the other axis B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a thin plate driving device, and more particularly to an object detection device, particularly a surface foreign object detection device that detects an object such as raindrops on a vehicle glass and a vehicle frame (for example, a slide door frame or a power window glass frame). The present invention relates to an anti-pinch device for detecting an object.

2. Description of the Related Art Conventionally, as a thin plate driving device, there is one in which a target movable plate can be driven to tilt around a plurality of axes (orthogonal axes) (see, for example, Patent Document 1). In this thin plate driving device, a movable frame is formed on the inner side of the non-driving portion via a pair of first hinge portions and is rotatable about the axis of the hinge portion, and is further orthogonal to the first hinge portion on the inner side of the movable frame. In some cases, a movable plate that can be rotated about the axis of the hinge portion is formed via a pair of second hinge portions. In such a thin plate driving device, the movable frame tilts (rotates) about the axis of the first hinge part with respect to the non-driving part, and the second hinge (perpendicular to the first hinge part) with respect to the movable frame. Since the movable plate tilts (rotates) around the axis of the part, the movable plate can be freely tilted around the two axes perpendicular to the non-driving part. In this thin plate driving device, electrodes are provided on the movable frame and the movable plate, respectively, are arranged opposite to the ground plane, and a voltage is applied to each electrode to drive the movable frame and the movable plate with electrostatic force ( Tilt).
Japanese Patent Laid-Open No. 11-337860 (see FIG. 7)

  However, the thin plate driving device as described above has two tilting portions, and thus the structure is complicated. In addition, since it is difficult to provide a coil part in a frame (movable frame) with a gap inside, it is easy to manufacture while providing a coil part to obtain high driving performance. It becomes difficult.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a thin plate driving device that can obtain high driving performance and that is easy to manufacture with a simple configuration, and the thin plate driving device. An object detection device, a surface foreign matter detection device, and a pinching prevention device are provided.

  In the invention according to claim 1, a pedestal part having a magnetic field generating part for generating a magnetic field, a fixed part made of a plate material and fixed to the pedestal part, and the fixed part continuously via a connection support part A thin plate member having one tilting portion formed and supported by the connection support portion so as to be tiltable about two axial centers orthogonal to the fixed portion, and to tilt the tilting portion about the two axis centers And a plurality of coil portions provided on the tilting portion.

  According to a second aspect of the present invention, in the thin plate driving device according to the first aspect, the connection support portion includes a first connection portion that extends parallel to one of the two axes and extends at right angles to the other, and A second connecting portion extending at a right angle to one of the two axes and parallel to the other.

According to a third aspect of the present invention, in the thin plate driving device according to the first or second aspect, a plurality of the connection support portions are provided so as to be line-symmetric with respect to the two axes.
According to a fourth aspect of the present invention, in the thin plate driving device according to the first to third aspects, the plurality of coil portions are provided in the same pattern.

  According to a fifth aspect of the present invention, in the thin plate driving device according to any one of the first to fourth aspects, the magnetic field generation unit is a permanent magnet that is disposed opposite to the tilting unit and generates a constant magnetic field. is there.

  In the invention of claim 6, the light emitting unit that emits light, and the tilting unit has a reflecting surface for reflecting the light from the light emitting unit and directing the light toward the object, and the reflecting surface is driven to rotate. A thin plate driving device according to any one of claims 1 to 5 for changing the direction of light within a target range of the object, and a light receiving unit for receiving light reflected by the object. A gist of the object detection device provided.

According to a seventh aspect of the present invention, there is provided a surface foreign object detection device that includes the object detection device according to the sixth aspect and detects an object on a vehicle glass as the object.
The gist of the invention described in claim 8 is the pinching prevention device that includes the object detection device according to claim 6 and detects an object up to the vehicle frame as the object.

(Function)
According to the first aspect of the present invention, the tilting portion is tilted about the two axes orthogonal to each other when current is supplied to the coil portion. Since one tilting part is supported by the connecting support part so as to be tiltable about two axis centers orthogonal to each other, compared to the prior art (having two tilting parts (tilting movable frame)). Therefore, the structure becomes simple. In addition, in the case of having two tilting portions as in the prior art and one of which is a movable frame, it is difficult to provide a coil portion on the movable frame, but there is no such thing, A plurality of coil portions for tilting around the two axes can be easily disposed on one tilting portion. As a result, high driving performance can be obtained, and a thin plate driving device that can be easily manufactured with a simple configuration can be obtained.

  According to the second aspect of the present invention, the connection support portion includes a first connection portion that extends parallel to one of the two axes and extends at a right angle to the other, and a right angle to one of the two axes and the other. And the second connecting portion extending in parallel with each other, it is easy to twist and bend easily (bend in a direction perpendicular to the two axes), and the tilting portions can be easily tilted about each of the two axes.

  According to the invention described in claim 3, since the plurality of connection support portions are provided so as to be line symmetric with respect to the two axes, the tilting portion is tilted about one of the two axes. The load (reaction force) is the same when the tilting portion is tilted about the other of the two axes. Therefore, for example, it becomes easy to control the tilt angle of the relative tilting portion around each of the two axes.

  According to the fourth aspect of the present invention, since the plurality of coil portions are provided in the same pattern, the magnetic force generated in each coil portion can be relatively easily controlled by the amount of current. Therefore, for example, it becomes easy to control the tilt angle of the tilt section relative to each of the two axes by the amount of current supplied to the coil section. In particular, by applying this configuration to the configuration according to the third aspect, it is possible to obtain an operational effect that the tilt angle control of the relative tilt portion around each of the two axes becomes easier. Become.

  According to the fifth aspect of the present invention, since the magnetic field generation unit is a permanent magnet that is disposed opposite to the tilting unit and generates a constant magnetic field, it has a simple configuration and is highly efficient (high with a small amount of current). Driving performance).

  According to the sixth aspect of the present invention, since the reflecting surface is rotationally driven together with the tilting portion in the thin plate driving device, and the direction of the light is changed within the target range of the object, the amount of light received by the light receiving portion is increased. Based on this, it is possible to detect whether or not an object other than the target object exists within the target range.

According to the seventh aspect of the present invention, an object on the vehicle glass can be detected.
According to the eighth aspect of the present invention, an object up to a vehicle frame (for example, a frame of a power window glass or a frame for a slide door) can be detected.

As described above in detail, according to the first to fifth aspects of the invention, it is possible to provide a thin plate driving device that can obtain high driving performance and can be easily manufactured with a simple configuration.
Further, according to the invention described in claim 6, it is possible to provide an object detection device that can obtain high driving performance and can be easily manufactured with a simple configuration.

According to the seventh aspect of the present invention, it is possible to provide a surface foreign matter detection device that can obtain high driving performance and that can be easily manufactured with a simple configuration.
Further, according to the invention described in claim 8, it is possible to provide an anti-pinch device which can obtain high driving performance and can be easily manufactured with a simple configuration.

  Hereinafter, an embodiment in which the present invention is embodied in a surface foreign object detection device (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 the light toward the windshield 2. And a thin plate driving device 5 for changing the direction of the light within the target range in the windshield 2 and a light receiving unit 6 for receiving the light reflected by the windshield 2 (part thereof). Prepare. In the surface foreign matter detection device 1 of the present embodiment, all of the light emitting unit 3, the thin plate driving device 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 FIG. 3, the thin plate driving device 5 includes a pedestal portion 11, a permanent magnet 12 as a magnetic field generation unit, a thin plate member 13, and a plurality of coil portions 14 to 17 (see FIG. 5).
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 is formed at the center of the upper surface (the upper surface in FIG. 3) of the mounting portion 11a when viewed from above, and a rectangular magnet when viewed from above at the center of the bottom (upper surface) of the recess 11b. A housing recess 11c is formed. And the permanent magnet 12 is accommodated and hold | maintained at each magnet accommodation recessed part 11c. The permanent magnet 12 is polarized in the vertical direction (the vertical direction in FIG. 3, for example, N pole upward and S pole downward), and generates a constant magnetic field.

  The thin plate member 13 is made of a silicon substrate as a plate material, and as shown in FIGS. 4 and 5, a fixed portion 21, a connection support portion 22, and a tilting portion 23 are integrally formed. 4 is a plan view of the thin plate member 13, and FIG. 5 is a bottom view of the thin plate member 13. In the present embodiment, the surface of the tilting portion 23 (the surface in FIG. 4 is the top surface in FIG. 3). ) Is circularly deposited with metal (for example, nickel), and the portion constitutes the reflection surface 4 (see FIG. 2).

  In detail, the fixing | fixed part 21 is formed in the square frame shape which can be mounted in the mounting part 11a upper surface in the said base part 11, and is mounted and fixed to this mounting part 11a. The tilting portion 23 is formed in a quadrangular shape (square), is formed continuously with the fixed portion 21 via the connection support portion 22, and is biaxially orthogonal to the fixed portion 21 at the connection support portion 22. It is supported so that it can tilt (turn) at the center of A and B (see FIG. 5). In the present embodiment, one of the two axes A and B (axis A) is the same as one of the diagonal lines in the square of the tilting portion 23 (the one extending diagonally to the lower right in FIG. 5). The other of B (axis B) is set to be the same as the other of the diagonal lines in the square of the tilting portion 23 (the one extending diagonally to the upper right in FIG. 5). Four connection support portions 22 are provided so as to be line symmetric with respect to the two axes A and B. In the present embodiment, the centers of the square sides of the fixed portion 21 and the tilting portion 23 are connected to each other. It is formed as follows. Each connection support portion 22 includes a first connection portion 22a extending parallel to one axis A and perpendicular to the other axis B, and perpendicular to one axis A and the other axis B. The second connecting portion 22b extending in parallel is connected to the second connecting portion 22b. The tilting portion 23 is disposed at a position corresponding to the concave portion 11b of the mounting portion 11a, and can be tilted because there is a gap above and below. Further, the tilting portion 23 is disposed to face the permanent magnet 12. The tilting part 23 is provided with a plurality of coil parts 14 to 17 (see FIG. 5).

  As shown in FIG. 5, the plurality of coil portions 14 to 17 are provided in the same pattern, specifically, the same number of turns and the same size. Further, the plurality of coil portions 14 to 17 of the present embodiment are wound in the same direction (in FIG. 5, clockwise from the outside toward the center). Among the plurality of coil portions 14 to 17, one coil portion 14 and 15 for tilting the tilting portion 23 about one axis A is provided along the other axis B, and tilted about the other axis B. A pair of the other coil parts 16 and 17 for tilting the part 23 is provided along one axis A. And one pair of coil parts 14 and 15 and the other pair of coil parts 16 and 17 are arranged so that the centers of the respective coil parts 14 to 17 correspond to the apexes of the square (in other words, the tilting part 23). Are arranged so that each square fits in a quadrilateral square.

  And one pair of coil parts 14 and 15 are mutually connected by the connection part 31 in the center side edge part which is the one end. Further, the other pair of coil portions 16 and 17 are connected to each other by a connection portion 32 at the center side end portion which is one end thereof. These connection parts 31 and 32 are arrange | positioned on the said 2 axis | shafts A and B so that it may become the shortest distance, respectively. Needless to say, the connection portions 31 and 32 have insulation at points where they intersect with each other and insulation other than the end portions on the center side of the coil portions 14 to 17.

  In addition, the outer ends of the coil portions 14 to 17 are connected to terminals 34 to 37 provided on the fixed portion 21 via wirings 33 provided on the connection support portions 22. The terminals 34 to 37 are connected to an external control unit (not shown).

  As shown in FIG. 2, the control unit tilts (rotates and drives) the reflecting surface 4 (tilting unit 23) that reflects the light from the light emitting unit 3 (see the broken line in FIG. 2) to change the direction of the light to the front. A current is supplied to the coil portions 14 to 17 (terminals 34 to 37) so as to be changed within the target range Z (see FIG. 1) in the glass 2. 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). Then, current is supplied to the coil portions 14 to 17 so as 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). In the present embodiment, for example, as shown in FIG. 6, the current I is supplied to one of the coil portions 14 and 15 (terminals 34 and 35) so that the reflecting surface 4 (tilting portion 23) is magnetically ( By tilting about one axis A with respect to the fixed portion 21 (by attracting and repelling action with the permanent magnet 12), the direction of light is changed (moved) in the left-right direction of the windshield 2 (left-right direction in FIG. 1). Let Further, in the present embodiment, by supplying current to the other coil parts 16 and 17 (terminals 36 and 37), the reflecting surface 4 (tilting part 23) is caused by magnetic force (by attractive repulsion with the permanent magnet 12). ) Tilt about the other axis B with respect to the fixed portion 21 to change (move) the direction of light 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 be increased 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. 7). X). In FIG. 7, the characteristic X for each line (see the two-dot chain line in FIG. 1) in the target range Z 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. 7 indicates 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. 8 shows the characteristic Y when a large number of raindrops U (see FIG. 2) are present. Moreover, in the characteristic Y of FIG. 8, 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. 8, 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 one tilting portion 23 is supported by the connecting support portion 22 so as to be tiltable (rotatable) about two axes A and B orthogonal to each other, the conventional technology (two tilting portions (tilting) The structure is simpler than that having a movable frame). In addition, in the case of having two tilting portions as in the prior art and one of which is a movable frame, it is difficult to provide a coil portion on the movable frame, but there is no such thing, A plurality of coil portions 14 to 17 for tilting about the two axes A and B can be easily arranged on one (rectangular) tilt portion 23. As a result, it is possible to obtain the thin plate driving device 5 and the surface foreign matter detection device that can obtain high driving performance and are easily manufactured with a simple configuration.

  (2) The connection support portion 22 includes a first connection portion 22a extending parallel to the one axis A and perpendicular to the other axis B, and perpendicular to the one axis A and the other axis B. Since the second connecting portion 22b extending in parallel is connected to the second connecting portion 22b, the second connecting portion 22b is easily twisted and bent easily (bends in a direction perpendicular to the two axes A and B). Therefore, the tilting portion 23 can be easily tilted (rotated) around each of the two axes A and B.

  (3) Since the four connection support portions 22 are provided so as to be line symmetric with respect to the two axes A and B, when the tilting portion 23 is tilted around one axis A, the other axis The load (reaction force) is the same when the tilting portion 23 is tilted about B. Therefore, for example, it is easy to control the tilt angle of the tilt portion 23 relative to each of the two axes A and B.

  (4) Since the plurality of coil portions 14 to 17 are provided in the same pattern, specifically the same number of turns and the same size, the magnetic force generated in each of the coil portions 14 to 17 can be relatively easily made with a current amount. Can be controlled. Therefore, for example, it is easy to control the tilt angle of the tilt section 23 relative to each of the two axes A and B by the amount of current supplied to the coil sections 14 to 17.

  (5) Among the plurality of coil portions 14 to 17, one coil portion 14 and 15 for tilting the tilting portion 23 about one axis A is provided along the other axis B, and the other axis B is A pair of other coil portions 16 and 17 that tilt the tilting portion 23 as a center is provided along one axis A. And one pair of coil parts 14 and 15 and the other pair of coil parts 16 and 17 are arranged so that the centers of the respective coil parts 14 to 17 correspond to the apexes of the square (in other words, the tilting part 23). Are arranged so that each square fits into a quadrant divided into four. Therefore, the dead space of the tilting part 23 can be reduced, and as a result, the apparatus can be reduced in size. In addition, for example, it is easy to control the tilt angle of the relative tilting portion around each of the two axes by the amount of current supplied to each of the coil portions 14 to 17.

  (6) One pair of coil portions 14 and 15 has one end (center side end portion) connected to each other at the connection portion 31 and the other pair of coil portions 16 and 17 has one end (center side end portion). ) Are connected to each other at the connection part 32, the wiring structure is simplified as compared with a structure in which a pair of wirings are connected to the coil parts 14 to 17 from the outside of the tilting part 23, respectively. In the present embodiment, the number of wirings 33 provided in the connection support portion 22 can be four.

  (7) Since the wiring 33 to the coil portions 14 to 17 is provided in each connection support portion 22, the wiring structure to the coil portions 14 to 17 can be simplified (easy). In the case of having two tilting parts (movable frame and movable plate) as in the prior art, it is difficult to provide a coil portion on the movable plate and wire the coil portion (from the non-driving portion to the movable plate). Since the first hinge part, the movable frame, and the second hinge part exist, the wiring structure (routing) is complicated, but this is not the case.

  (8) Since the magnetic field generation unit is the permanent magnet 12 that is disposed opposite to the tilting unit 23 and generates a constant magnetic field, high efficiency (high driving performance with a small amount of current) can be achieved with a simple configuration. .

  (9) Since the reflecting surface 4 is tilted (rotated and driven) together with the tilting unit 23 by the thin plate driving device 5, the direction of light is changed within the target range Z in the windshield 2, so the amount of light received by the light receiving unit 6 Based on Q, it can be determined (detected) whether or not an object exists on the windshield 2 (target range Z). Further, since the direction of light is changed by tilting (rotating drive) the reflecting surface 4 (tilting portion 23), the target range Z can be easily widened (by simply increasing the tilting angle of the reflecting surface 4). Can do. Further, since the light emitting unit 3, the thin plate driving device 5 and the light receiving unit 6 are respectively fixed to the windshield 2 at fixed positions (only for fixing the case 7 housing them), the mounting structure thereof, etc. Becomes easy.

The above embodiment may be modified as follows.
In the above embodiment, the plurality of coil portions 14 to 17 are wound in the same direction (in FIG. 5, clockwise from the outside toward the center). May be wound in different directions. For example, as shown in FIG. 9, the coil parts 14 and 17 of the above embodiment are changed to coil parts 41 and 42 wound in the reverse direction (counterclockwise from the outside toward the center in FIG. 9). May be. In this case, it is necessary to change the polarization direction of the permanent magnet 12 of the above embodiment as appropriate.
In the above-described embodiment, the connection support portion 22 includes the first connection portion 22a extending parallel to the one axis A and extending at a right angle to the other axis B, and being perpendicular to the one axis A and the other Although the second connecting portion 22b extending in parallel to the axis B is connected to the second connecting portion 22b, the shape may be changed to another shape as long as the tilting portion can be supported to be tiltable around two axes orthogonal to each other. For example, a first connecting portion that extends parallel to one axis A and perpendicular to the other axis B, and a second connecting portion that extends perpendicular to one axis A and parallel to the other axis B As shown in FIG. 10 and FIG. 11, the first and second connection parts 51 and two second connection parts 52 are formed as shown in FIGS. You may change to 53. If it does in this way, it will become possible to incline the inclination part 23 still more easily centering | focusing on each of 2 axis | shafts A and B, suppressing the enlargement of the physique by the connection support part 53, respectively.

  In the above embodiment, four connection support portions 22 are provided so as to be line-symmetric with respect to the two axes A and B. However, the present invention is not limited to this. ) The shape may be changed.

  In the above-described embodiment, the plurality of coil portions 14 to 17 are provided in the same pattern, specifically, the same number of turns and the same size. Also good.

  In the above embodiment, the coil portions 14 and 15 and the other coil portions 16 and 17 are arranged so that the centers of the coil portions 14 to 17 correspond to the apexes of the square (in other words, the tilting portion However, the arrangement is not limited to this, and the arrangement may be changed. Of course, the shape (square) of the tilting portion 23 may be changed, and the arrangement of the coil portions may be changed according to the shape.

-You may change the wiring structure (connection part 31, 32, wiring 33) with respect to each coil part 14-17 of the said embodiment to another structure.
In the above embodiment, the magnetic field generation unit is the permanent magnet 12 that is disposed opposite to the tilting unit 23 and generates a constant magnetic field. However, the present invention is not limited to this. For example, the magnetic field generation unit is provided in the pedestal unit 11 and generates a magnetic field. You may change to the fixed coil part to be made.

  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 thin plate driving device 5 and the light receiving unit 6 are accommodated in the case 7 and are integrally disposed. Also good.
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. 12, the object may be embodied in an anti-pinch device 63 that detects an object and an object between the frame 62 (of the power window glass 61) as a vehicle frame. This pinching prevention device 63 is configured in substantially the same manner as the surface foreign matter detection device 1 of the above embodiment. The pinching prevention device 63 is fixed to the front side of the vehicle door 64 and detects whether or not an object is present up to the frame 62 on the rear side of the vehicle door 64. In this case, a reflecting member 65 (indicated by a thick line in FIG. 12) for reflecting light (shown by a broken line arrow in FIG. 12) favorably on the frame 62 on the rear side of the vehicle door 64. 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 there is an object, the closing operation of the power window glass 61 is stopped or switched to the opening operation. This prevents the object from being caught. Further, in the pinching prevention device 63 for detecting an object between the power window glass 61 and the frame 62, the target range can be easily widened while the mounting structure is simple.

  Further, for example, as shown in FIG. 13, the object may be embodied in a pinching prevention device 74 that detects an object and an object between frames 72 and 73 (with respect to the slide door 71) as a vehicle frame. This pinching prevention device 74 is configured in substantially the same manner as the surface foreign matter detection device 1 of the above embodiment. The pinching prevention device 74 is fixed to the upper portion of the vehicle 75 at a position corresponding to the slide door 71 (position where the distance from the slide door 71 is close during the closing operation), and is fixed to the frame 72 of the slide door 71 and the slide door 71. It is detected whether or not an object exists between the lower frame 73 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 or not an object is present, the closing operation of the slide door 71 is switched to a stop or an opening operation. This prevents the object from being caught. Further, in the pinching prevention device 74 for detecting an object between the frames 72 and 73 with respect to the slide door 71, 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 thin plate driving device according to claim 2, wherein the connection support portion has a plurality of the first and second connection portions and is formed in a fold shape. If it does in this way, it will become possible to tilt each tilting part more easily centering on each of the two axes, while suppressing an increase in the size of the physique due to the connecting support part.

  (B) In the thin plate driving device according to claim 4, a pair of one of the plurality of coil portions that tilts the tilting portion about one of the two axes along the other of the two shafts. A pair of other coil portions that tilt the tilting portion around the other of the two axes among the plurality of coil portions along one of the two axes, the one pair of coil portions, A thin plate driving device characterized in that the other pair of coil portions are arranged so that the centers of the respective coil portions correspond to the apexes of a square. If it does in this way, the dead space of a tilting part can be decreased and by extension, size reduction of an apparatus can be achieved. In addition, for example, it is easy to control the tilt angle of the tilt section relative to each of the two axes by the amount of current supplied to each coil section.

  (C) The thin plate driving device according to (b), wherein one ends of the pair of coil portions are connected to each other at a connection portion. This simplifies the wiring structure as compared with a structure in which a pair of wirings are connected to each coil part from the outside of the tilting part. For example, in the configuration in which the coil unit and the external control device are connected via the wiring provided in the connection support part, the number of wirings provided in the connection support part can be suppressed.

  (D) The thin plate driving device according to any one of claims 1 to 5 and (a) to (c), wherein a wiring to the coil portion is provided in the connection support portion. Drive device. If it does in this way, the wiring structure to a coil part can be made simple (easy). In the case of having two tilting parts (movable frame and movable plate) as in the prior art, it is difficult to provide a coil portion on the movable plate and wire the coil portion (from the non-driving portion to the movable plate). Since the first hinge part, the movable frame, and the second hinge part exist, the wiring structure (routing) is complicated, but this is not the case.

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 thin-plate drive device in this Embodiment. The top view of the thin-plate member in this Embodiment. The bottom view of the thin-plate member in this Embodiment. (A) (b) Explanatory drawing for demonstrating the operation | movement in this Embodiment. Time-light-receiving amount characteristic diagram. Time-light-receiving amount characteristic diagram. The bottom view of the thin-plate member in another example. The top view of the plate-shaped member in another example. The bottom view of the plate-shaped member in 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 ... Reflecting surface, 5 ... Thin plate drive device, 6 ... Light-receiving part, 11 ... Base part, 12 ... Permanent magnet as a magnetic field generation part, 13 ... Thin plate member, 14-17, 41, 42 ... coil part, 21 ... fixed part, 22, 53 ... connection support part, 22a, 51 ... first connection part, 22b, 52 ... second connection part, 23 ... tilting part, 62, 72, 73: Frame as object and vehicle frame, A, B: Two axes orthogonal to each other, Z: Target range.

Claims (8)

A pedestal having a magnetic field generating part for generating a magnetic field;
A fixed portion made of a plate material and fixed to the pedestal portion, and continuously formed on the fixed portion via a connection support portion, and tilted about two axes perpendicular to the fixed portion at the connection support portion. A thin plate member having one tilting portion supported in a possible manner;
A thin plate driving device comprising: a plurality of coil portions provided on the tilting portion so as to tilt the tilting portion about the two axes. The thin plate driving device according to claim 1,
The connection support part includes a first connection part extending parallel to one of the two axes and extending at right angles to the other, and a second connection part extending perpendicular to one of the two axes and parallel to the other. And a thin plate driving device. 3. The thin plate driving device according to claim 1, wherein a plurality of the connection support portions are provided so as to be line-symmetric with respect to the two axes. 4. In the thin plate drive device according to claims 1 to 3,
The thin plate driving device, wherein the plurality of coil portions are provided in the same pattern. In the thin plate drive device according to any one of claims 1 to 4,
The thin plate driving device, wherein the magnetic field generation unit is a permanent magnet that is disposed to face the tilting unit and generates a constant magnetic field. A light emitting section that emits light;
The tilting part has a reflecting surface for reflecting light from the light emitting part and directing it toward the object, and the reflecting surface is rotationally driven to change the direction of the light within the object range of the object. The thin plate driving device according to any one of claims 1 to 5,
An object detection apparatus comprising: a light receiving unit for receiving light reflected by the object.   A surface foreign object detection device comprising the object detection device according to claim 6, wherein an object on a vehicle glass as the object is detected.   An anti-pinch device comprising the object detection device according to claim 6, wherein an object between the vehicle frame as the target object is detected.

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