Motion detection device and vehicle structure

Abstract

The present invention provides a motion detection device and vehicle structure that can prevent the detection range of the object's motion from becoming narrower. [Solution] The motion detection device 5 is composed of a first electric wire and includes a first front detection unit 511a and a first rear detection unit 511b that detect capacitance, and a sensor bracket 52 to which the first front detection unit 511a and the first rear detection unit 511b are attached. The portion of the carrier member of the sensor bracket 52 that should face the metal second support unit is provided with a recessed portion 521a that adjusts the distance between the first front detection unit 511a and the first rear detection unit 511b so that a gap is created between the first front detection unit 511a and the first rear detection unit 511b.

Description

[Technical Field]

[0001] The present invention relates to a motion detection device and a vehicle structure. [Background Art]

[0002] Conventionally, there is a motion detection device that detects the motion of a person's foot using a capacitance sensor mounted on an elongated sensor bracket (see, for example, Japanese Patent Laid-Open No. 2020-190483 (Patent Document 1)).

[0003] A loop-shaped electric wire forming a sensor electrode extends from the sensor body of the capacitance sensor. This electric wire includes first and second portions extending along the longitudinal direction of the sensor bracket, and a folded portion connected to an end of the first and second portions opposite to the sensor body side. [Prior Art Documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Laid-Open No. 2020-190483 [Summary of the Invention] [Problem to be Solved by the Invention]

[0005] When the above conventional motion detection device is mounted on a vehicle, if a metal hitch member is located near the motion detection device, in a portion of the sensor bracket that is not opposed to the hitch member, the first and second portions of the electric wire are arranged spaced apart from each other, but in the portion of the sensor bracket that is opposed to the hitch member, the first and second portions of the electric wire are arranged in contact with each other. For this reason, Therefore, there has been a problem that the range for detecting the motion of a person's foot is narrowed in the vicinity of the portion of the sensor bracket opposed to the hitch member.

[0006] Therefore, the object of the present invention is to provide a motion detection device and a vehicle structure that can prevent the detection range of the object's motion from becoming narrower. [Means for solving the problem]

[0007] The motion detection device according to the first aspect of the present invention is It consists of electric wires and includes first and second sensor electrodes for detecting capacitance, The sensor bracket to which the first and second sensor electrodes described above are attached Equipped with, The portion of the sensor bracket that should face the metal part is provided with a spacing adjustment section that adjusts the distance between the first sensor electrode and the second sensor electrode so that a gap is created between the first sensor electrode and the second sensor electrode.

[0008] According to the above configuration, a spacing adjustment section is provided in the portion of the sensor bracket that should face the metal component. This spacing adjustment section adjusts the distance between the first and second sensor electrodes so that a gap is created between them, thereby preventing the detection range of the object's movement (e.g., a person's foot) from narrowing near the portion of the sensor bracket that should face the metal component.

[0009] The motion detection device according to a second aspect of the present invention is In the motion detection device of the first embodiment described above, The spacing adjustment portion is provided on the part of the sensor bracket that should face the metal part, and is a recessed portion that is recessed in a direction away from the metal part.

[0010] According to the above configuration, the recessed portion is recessed away from the metal part, so even if the metal part vibrates, it is less likely to interfere with the metal part. Therefore, the possibility of damage to the sensor bracket can be reduced. Furthermore, by setting the shape of the recess according to the specifications of the metal part (especially its size in the vertical direction of the vehicle), the distance between the first sensor electrode and the second sensor electrode can be easily adapted to the specifications of the metal part, making it easy to secure the required detection range for each vehicle.

[0011] The motion detection device according to the third aspect of the present invention is In the motion detection device of the first or second embodiment described above, The spacing adjustment section is provided with a holding section for holding the first and second sensor electrodes such that when the sensor bracket is attached to the vehicle, the first sensor electrode is positioned above the second sensor electrode.

[0012] According to the above configuration, the holding part holds the first and second sensor electrodes such that when the sensor bracket is attached to the vehicle, the first sensor electrode is positioned above the second sensor electrode. Therefore, even if the sensor bracket is located on a metal part, the first sensor electrode can be positioned relatively far from the metal part, and the second sensor electrode can be positioned relatively close to the metal part. Consequently, adverse effects from the metal part can be suppressed in detecting the movement of the object.

[0013] The motion detection device according to the fourth aspect of the present invention is In any one of the motion detection devices described in the first to third embodiments above, The sensor bracket is provided with a restricting portion that restricts the movement of the first and second sensor electrodes away from the sensor bracket.

[0014] According to the above configuration, the restricting unit restricts the movement of the first and second sensor electrodes away from the sensor bracket, thereby preventing the detection range of the object's movement from deviating from a predetermined range.

[0015] The motion detection device according to the fifth aspect of the present invention is In the motion detection device of the fourth embodiment described above, Said restricting portion is formed integrally with said sensor bracket.

[0016] According to the above configuration, forming the restricting portion integrally with the sensor bracket reduces the number of components compared to forming the restricting portion as a separate body on the sensor bracket. Therefore, forming the restricting portion integrally with the sensor bracket can contribute to simplifying the manufacturing process.

[0017] The motion detection device according to the sixth aspect of the present invention is: In the motion detection device according to the fourth aspect or the fifth aspect, Said restricting portion is connected to an edge of said sensor bracket, and is rotatable between a non-restricting position for being located outside the edge of said sensor bracket in a state of not overlapping with said sensor bracket, and a restricting position for sandwiching said first and second sensor electrodes together with said sensor bracket in a state of overlapping with said sensor bracket.

[0018] According to the above configuration, Said restricting portion is connected to an edge of said sensor bracket, and is rotatable between a non-restricting position for being located outside the edge of said sensor bracket in a state of not overlapping with said sensor bracket, and a restricting position for sandwiching said first and second sensor electrodes together with said sensor bracket in a state of overlapping with said sensor bracket.

[0019] With the above configuration, since said restricting portion is rotatable between the non-restricting position and the restricting position, the position of the restricting portion can be easily switched from the non-restricting position to the restricting position.

[0020] The motion detection device according to the seventh aspect of the present invention is: any one of the motion detection devices according to the first aspect to the sixth aspect, said metal component and comprising.

[0021] According to the above configuration, by providing the above motion detection device, it is possible to prevent the detection range of the object's motion from narrowing in the vicinity of the part of the sensor bracket that should face the metal part. [Effects of the Invention]

[0022] As is clear from the above, the motion detection device of the present invention can prevent the detection range of the object's motion from becoming narrower. [Brief explanation of the drawing]

[0023] [Figure 1] This is a schematic rear view of a vehicle employing the vehicle structure of one embodiment of the present invention. [Figure 2] This is a schematic diagram illustrating the opening and closing operation of the rear door of the above vehicle. [Figure 3] This is a perspective view of the motion detection device and carrier member of one embodiment of the present invention, as seen from the rear, left, and slightly above. [Figure 4] This is a top view of the above-mentioned motion detection device. [Figure 5] This is a bottom view of the above-mentioned motion detection device. [Figure 6] This is a perspective view of the above motion detection device, taken from the rear, upper left side. [Figure 7] This is a perspective view of the above motion detection device, taken from the rear, slightly lower left side. [Figure 8] This is a magnified view of a portion of Figure 7. [Figure 9] This is a bottom view of the section shown in Figure 8. [Figure 10] This is a magnified view of a portion of Figure 5. [Figure 11] This is an end view taken along the line XI-XI in Figure 10. [Figure 12] This is an end view taken along the line XII-XII in Figure 10. [Figure 13] This is an end view taken along the line XIII-XIII in Figure 5. [Figure 14] This is a bottom view of the above motion detection device before its completion. [Figure 15]This is a magnified perspective view of a portion of Figure 14. [Modes for carrying out the invention]

[0024] Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same reference numerals indicate the same part or a corresponding part.

[0025] Furthermore, the drawings include mutually orthogonal X, Y, and Z axes as needed. The direction parallel to the X axis corresponds to the vehicle's front-to-back direction (length direction), the direction parallel to the Y axis corresponds to the vehicle's left-to-right direction (width direction), and the direction parallel to the Z axis corresponds to the vehicle's up-and-down direction (height direction).

[0026] Figure 1 is a schematic diagram showing a vehicle employing the vehicle structure of one embodiment of the present invention, viewed from directly behind. Figure 2 is a schematic diagram illustrating the operation for opening and closing the vehicle's back door 2.

[0027] As shown in Figure 1, the vehicle comprises a body 1 having an opening 1a at its rear, a back door 2 attached to the rear of the body 1 that rotates vertically to open and close the opening 1a, and a rear bumper 3 attached to the rear of the body 1 and positioned below the opening 1a.

[0028] When the user opens or closes the back door 2, they perform an intrusion action (hereinafter referred to as the "kick action") in which they insert their foot into a predetermined area in the space below the rear bumper 3, as shown in Figure 2.

[0029] As shown in Figures 1 and 2, the rear bumper 3 covers most of the carrier member 4 for towing trailers such as camping trailers and boat trailers.

[0030] As shown in Figure 3, the carrier member 4 includes a ball mount 44 and a hitch ball 47 fixed to the rear bent portion 44a of the ball mount 44.

[0031] The ball mount 44 is supported by a first support portion 45 extending downward from the center of the cross frame 41 in the left-right direction, and a second support portion 46 extending toward the rear of the vehicle from the lower end of the first support portion 45. These first and second support portions 45 and 46 are made of metal, like the other components of the carrier member 4. The second support portion 46 is an example of a metal part.

[0032] More specifically, the first support portion 45 is composed of first and second plates 451 and 452 that clamp the front end of the second support portion 46. On the other hand, the second support portion 46 is formed into a rectangular tube shape, into which the front straight portion 44b of the ball mount 44 is inserted. This straight portion 44b is detachably attached to the second support portion 46 using a detachable pin 49 and a snap pin 48. Although not shown in the diagram, the upper end of the cross frame 41 is fixed to the rear of the vehicle body 1 via the cross frame of the carrier member 4, etc. Of the parts of the carrier member 4, only the second support portion 46 is located directly below the motion detection device 5.

[0033] As shown in Figures 4 to 7, the motion detection device 5 comprises a capacitive non-contact sensor unit 51 and a resin sensor bracket 52 on which the sensor unit 51 is mounted. This motion detection device 5 is fixed to the rear of the vehicle body 1 with bolts or the like.

[0034] The sensor bracket 52 is formed in a long, plate-like shape and extends along the left-right direction of the vehicle. The longitudinal center of the sensor bracket 52 is positioned between the first support portion 45 and the rear bent portion 44a of the ball mount 44, and faces the second support portion 46 in the vertical direction. In other words, the longitudinal center of the sensor bracket 52 is positioned above the second support portion 46, behind the first support portion 45, and in front of the bent portion 44a (see Figure 3).

[0035] The sensor bracket 52 comprises a lower section 521 and an upper section 522 which is located behind the lower section 521 and above the lower section 521.

[0036] The sensor unit 51 includes first and second electric wires 511 and 512, and a controller 513 connected to each end of the first and second electric wires 511 and 512 via connectors 514. The controller 513 is mounted on the upper left surface of the lower section 521 and receives and processes detection signals from the first and second electric wires 511 and 512. Note that the first electric wire 511 is just one example of an electric wire.

[0037] The first electric wire 511 is routed in a loop from the area above the upper surface of the lower section 521 to the area below the lower surface of the lower section 521. This first electric wire 511 has a first front detection unit 511a, a first rear detection unit 511b located behind the first front detection unit 511a, and a first connection unit 511c located to the right of the first front detection unit 511a and the first rear detection unit 511b, all located below the lower surface of the lower section 521. The first front detection unit 511a and the first rear detection unit 511b detect capacitance. The capacitance detected by the first front detection unit 511a and the first rear detection unit 511b changes as the user's foot approaches the first front detection unit 511a and the first rear detection unit 511b. In other words, the first front detection unit 511a and the first rear detection unit 511b are parts for detecting capacitance that changes as the user's foot approaches. The first front detection unit 511a is an example of a first sensor electrode, and the first rear detection unit 511b is an example of a second sensor electrode.

[0038] Furthermore, the first front detection unit 511a is inserted into a plurality of first front grooves 523 provided on the lower surface of the lower section 521 and is held by a plurality of first front holding units 524. These plurality of first front grooves 523 are arranged along the front edge of the sensor bracket 52 at predetermined intervals from each other.

[0039] Furthermore, the first rear detection unit 511b is inserted into a plurality of first rear grooves 525 provided on the lower surface of the lower section 521 and is held by a plurality of first rear holding units 526. These plurality of first rear grooves 525 are arranged along the front edge of the sensor bracket 52 at predetermined intervals from each other.

[0040] Furthermore, the first front groove 523 and the first rear groove 525 are formed with a predetermined distance between them in the front-rear direction. This makes it possible to easily and reliably route the first front detection unit 511a and the first rear detection unit 511b in a manner that separates them from each other in the front-rear direction, except for the central part in the longitudinal direction of the lower section 521.

[0041] The first connection portion 511c is a semicircular portion when viewed from below the first electric wire 511. One end of this first connection portion 511c is connected to the right end of the first front detection portion 511a, while the other end is connected to the right end of the first rear detection portion 511b.

[0042] Furthermore, the lower portion 521 of the sensor bracket 52 is integrally provided with first and second restricting sections 61 and 62, which restrict the movement of the first front detection section 511a and the first rear detection section 511b away from the sensor bracket 52. Note that the first and second restricting sections 61 and 62 are examples of restricting sections.

[0043] The second electric wire 512 is routed in a loop, from the area above the upper surface of the upper section 522 to the area below the lower surface of the upper section 522. This second electric wire 512 has a second front detection section 512a, a second rear detection section 512b located behind the second front detection section 512a, and a second connection section 512c located to the right of the second front detection section 512a and the second rear detection section 512b, all located below the lower surface of the upper section 522. The capacitance detected by the second front detection section 512a and the second rear detection section 512b changes as the user's foot approaches the second front detection section 512a and the second rear detection section 512b. In other words, the second front detection section 512a and the second rear detection section 512b are parts for detecting capacitance that changes as the user's foot approaches.

[0044] The second front detection unit 512a is inserted into a plurality of second front grooves 527 provided on the lower surface of the upper section 522 and is held by a plurality of second front holding sections 528. These plurality of second front grooves 527 are arranged along the rear edge of the sensor bracket 52 at predetermined intervals from each other.

[0045] Furthermore, the second rear detection unit 512b is inserted into a plurality of second rear grooves 529 provided on the lower surface of the upper section 522 and is held by a plurality of second rear holding units 530. These plurality of second rear grooves 529 are arranged along the rear edge of the sensor bracket 52 at predetermined intervals from each other.

[0046] Furthermore, the second front groove 527 and the second rear groove 529 are formed with a predetermined distance between them in the front-rear direction. This makes it possible to easily and reliably route the second front detection unit 512a and the second rear detection unit 512b across the entire upper section 522 while keeping them separated from each other in the front-rear direction.

[0047] The second connection portion 512c is a semi-circular shape when viewed from below the second electric wire 512. One end of this second connection portion 512c is connected to the right end of the second front detection portion 512a, while the other end is connected to the right end of the second rear detection portion 512b.

[0048] Furthermore, a third restricting unit 63 is integrally provided on the upper portion 522 of the sensor bracket 52, which restricts the movement of the second front detection unit 512a and the second rear detection unit away from the sensor bracket 52. Note that the third restricting unit 63 is just one example of a restricting unit.

[0049] As shown in Figures 8 and 9, the lower portion 521 of the sensor bracket 52 has a recessed portion 521a in the longitudinal center that is recessed away from the second support portion 46, i.e., upward. This recessed portion 521a adjusts the distance between the first front detection portion 511a and the first rear detection portion 511b so that a gap is created between them. The longitudinal center of the lower portion 521 of the sensor bracket 52 is an example of a part of the sensor bracket that should face a metal component.

[0050] Furthermore, the recessed portion 521a is provided with a plurality of third front holding portions 531 and a plurality of third rear holding portions 532. These third front holding portions 531 and the plurality of third rear holding portions 532 hold the first front detection portion 511a and the first rear detection portion 511b so that when the sensor bracket 52 is attached to the vehicle, the first front detection portion 511a is positioned above the first rear detection portion 511b. Note that the third front holding portion 531 and the third rear holding portion 532 are examples of holding portions.

[0051] Each third front retaining portion 531 is composed of first and second claw portions 5311 and 5312 that face each other. The first front detection portion 511a is positioned between the first claw portion 5311 and the second claw portion 5312. Furthermore, one tip of the first and second claw portions 5311 and 5312 bulges out toward the other tip of the first and second claw portions 5311 and 5312, so as to be able to engage with the first front detection portion 511a. In other words, the respective tips of the first and second claw portions 5311 and 5312 are formed in such a way that the first front detection portion 511a is prevented from detaching from between the first claw portion 5311 and the second claw portion 5312.

[0052] Furthermore, through holes 533 are provided in the recessed portion 521a so as to be adjacent to the base of each third front holding portion 531. This makes it possible to visually confirm from the upper surface of the sensor bracket 52 whether or not the first front detection portion 511a is being held by the third front holding portion 531.

[0053] Each third rear retaining portion 532 is also composed of first and second claw portions 5321 and 5322 that face each other. The first rear detection portion 511b is positioned between the first claw portion 5321 and the second claw portion 5322. Furthermore, one tip of the first and second claw portions 5321 and 5322 bulges out toward the other tip of the first and second claw portions 5321 and 5322, so as to be able to engage with the first rear detection portion 511b. In other words, the respective tips of the first and second claw portions 5321 and 5322 are formed in such a way that the first front detection portion 511a is prevented from detaching from between the first claw portion 5321 and the second claw portion 5322.

[0054] Furthermore, through holes 534 are provided in the recessed portion 521a so as to be adjacent to the base of each third rear holding portion 532. This makes it possible to visually confirm from the upper surface of the sensor bracket 52 whether or not the first rear detection portion 511b is being held by the third rear holding portion 532.

[0055] One of the multiple third rear retaining portions 532 is provided at the lower end of a bulge portion 521b that protrudes forward from the rear side of the recessed portion 521a. The upper end of this bulge portion 521b abuts against the first front detection portion 511a. This restricts the downward movement of the first front detection portion 511a.

[0056] Furthermore, the recessed portion 521a is provided with through holes 535 that face the through holes 534 at the upper end and lower end of the bulging portion 521b.

[0057] Each first front retaining portion 524 is composed of first and second claw portions 5241 and 5242 that face each other, as shown in Figures 10 and 11. The first front detection portion 511a is sandwiched between the intermediate portions of the first claw portion 5241 and the second claw portion 5242. In addition, one tip of the first and second claw portions 5241 and 5242 bulges out toward the other tip of the first and second claw portions 5241 and 5242, making it possible to engage with the first front detection portion 511a. That is, the first and second claw portions 5241 and 5242 of the first front retaining portion 524 are formed in the same way as the first and second claw portions 5311 and 5312 of the third front retaining portion 531 and the first and second claw portions 5321 and 5322 of the third rear retaining portion 532.

[0058] Although not shown in the figures, the first rear retaining portion 526, the second front retaining portion 528, and the second rear retaining portion 530 are also formed to have a cross-section similar to that of the first front retaining portion 524.

[0059] Furthermore, a through hole 536 is provided in the lower portion 521 of the sensor bracket 52, adjacent to the base of the first front holding portion 524 (see Figure 5). This makes it possible to visually confirm from the upper side of the sensor bracket 52 whether or not the first front detection portion 511a is being held by the first front holding portion 524.

[0060] Although not shown in the diagram, through holes are also adjacent to the base portions of the first rear retaining portion 526, the second front retaining portion 528, and the second rear retaining portion 530.

[0061] Each first front groove 523 has first and second wall portions 5231 and 5232 facing each other, as shown in Figures 10 and 12. The first front detection portion 511a is inserted between these first and second wall portions 5231 and 5232. The first and second wall portions 5231 and 5232 are each slightly thinner at the tip than at the base.

[0062] The first restricting section 61, the second restricting section 62, and the third restricting section 63 are connected to the edge of the sensor bracket 52, as shown in Figure 14.

[0063] As shown in Figures 5 and 14, the first restricting unit 61 is rotatable between an unrestricted position and a restricted position. The unrestricted position is a position in which the first restricting unit 61 is located outside the edge of the sensor bracket 52, while the first restricting unit 61 does not overlap the sensor bracket 52. The restricted position is a position in which the first front detection unit 511a and the first rear detection unit 511b are sandwiched between the sensor bracket 52 while overlapping the sensor bracket 52.

[0064] Furthermore, as shown in Figures 13 and 15, the first restricting portion 61 has a plate-shaped base portion 610, a first claw portion 611, a second claw portion 612, a third claw portion 613, a fourth claw portion 614, a first projection 615, a second projection 616, a third projection 617, and a fourth projection 618.

[0065] The first claw portion 611, the second claw portion 612, the third claw portion 613, and the fourth claw portion 614 are arranged in this order from the root side of the base portion 610 toward the tip side of the base portion 610. In this case, the first claw portion 611 is located closest to the pivot axis of the first restricting portion 61, while the fourth claw portion 614 is located furthest from the pivot axis of the first restricting portion 61.

[0066] Furthermore, one tip of the first and second claw portions 611 and 612 bulges out on the opposite side from the other tip of the first and second claw portions 611 and 612.

[0067] Furthermore, one tip of the third and fourth claw portions 613 and 614 bulges out on the opposite side from the other tip of the third and fourth claw portions 613 and 614.

[0068] In the lower portion 521 of the sensor bracket 52, where the first restricting portion 61 overlaps, a front clamping portion 541 and a rear clamping portion 542 are provided, which are located behind the front clamping portion 541.

[0069] The front end of the front clamping portion 541 is adjacent to the first through hole 555 into which the first claw portion 611 is inserted. On the other hand, the rear end of the front clamping portion 541 is adjacent to the second through hole 556 into which the second claw portion 612 is inserted. In other words, the front clamping portion 541 is provided between the first through hole 555 and the second through hole 556.

[0070] The front end of the rear clamping portion 542 is adjacent to the third through hole 557 into which the third claw portion 613 is inserted. On the other hand, the rear end of the rear clamping portion 542 is adjacent to the fourth through hole 558 into which the fourth claw portion 614 is inserted. In other words, the rear clamping portion 542 is provided between the third through hole 557 and the fourth through hole 558.

[0071] Furthermore, the lower portion 521 of the sensor bracket 52 is provided with a first claw portion 551, a second claw portion 552, a third claw portion 553, and a fourth claw portion 554.

[0072] The first claw portion 551 and the second claw portion 552 each have a tip portion that bulges out toward the front clamping portion 541. As a result, when the first and second claw portions 611 and 612 are inserted into the first and second through holes 555 and 556, the first and second claw portions 611 and 612 become capable of engaging with the first and second claw portions 551 and 552. At this time, the first front detection portion 511a is clamped between the front clamping portion 541 and the base portion 610.

[0073] The third claw portion 553 and the fourth claw portion 554 each have a tip portion that bulges out toward the rear clamping portion 542. As a result, when the third and fourth claw portions 613 and 614 are inserted into the third and fourth through holes 557 and 558, the third and fourth claw portions 613 and 614 become capable of engaging with the third and fourth claw portions 553 and 554. At this time, the first rear detection portion 511b is clamped between the rear clamping portion 542 and the base portion 610.

[0074] Furthermore, between the base of the first claw portion 611 and the base of the second claw portion 612, there are first and second projections 615 and 616 that extend parallel to each other. The direction of extension of these first and second projections 615 and 616 is non-parallel to the direction of extension of the first front detection portion 511a.

[0075] On the front clamping portion 541, a projection (not shown) is provided on the surface facing the first front detection portion 511a, which exhibits a line not parallel to the extending direction of the first front detection portion 511a.

[0076] Furthermore, between the base of the third claw portion 613 and the base of the fourth claw portion 614, there are third and fourth protrusions 617 and 618 that extend parallel to each other. The direction of extension of these third and fourth protrusions 617 and 618 is non-parallel to the direction of extension of the first rear detection portion 511b.

[0077] On the surface of the rear clamping portion 542 facing the first rear detection portion 511b, a projection (not shown) is provided that exhibits a line not parallel to the extending direction of the first rear detection portion 511b.

[0078] According to the motion detection device 5 with the above configuration, a recess 521a is provided in the part of the sensor bracket 52 that should face the metal second support part 46 of the carrier member 4. This recess 521a adjusts the distance between the first front detection part 511a and the first rear detection part 511b so that a gap is created between them, thereby preventing the detection range of the user's foot movement from narrowing near the part of the sensor bracket 52 that should face the second support part 46.

[0079] In contrast, if there is no gap between the first front detection unit 511a and the first rear detection unit 511b, it becomes difficult to detect the user's foot entering the space below the second support unit 46.

[0080] Furthermore, since the recessed portion 521a is recessed away from the second support portion 46, it is less likely to interfere with the second support portion 46 even if the second support portion 46 vibrates. Therefore, the possibility of damage to the sensor bracket 52 can be reduced. Furthermore, by setting the shape of the recess 521a according to the specifications of the second support portion 46 (especially its size in the vertical direction of the vehicle), the distance between the first front detection portion 511a and the first rear detection portion 511b can also be easily adapted to the specifications of the second support portion 46, making it easy to secure the necessary detection range for each vehicle.

[0081] Furthermore, the third front holding portion 531 and the third rear holding portion 532 hold the first front detection portion 511a and the first rear detection portion 511b such that when the sensor bracket 52 is attached to the vehicle, the first front detection portion 511a is positioned above the first rear detection portion 511b. Therefore, even when the sensor bracket 52 is positioned on the second support portion 46, the first front detection portion 511a can be positioned relatively far away from the second support portion 46, and the first rear detection portion 511b can be positioned relatively close to the second support portion 46. Consequently, adverse effects from the second support portion 46 in detecting kicking motion can be suppressed.

[0082] Furthermore, the first and second restricting units 61 and 62 restrict the first front detection unit 511a and the first rear detection unit 511b from moving away from the sensor bracket 52, thereby preventing the detection range of user movements from deviating from a predetermined range.

[0083] Furthermore, the third restricting unit 63 restricts the movement of the second front detection unit 512a and the second rear detection unit 512b away from the sensor bracket 52, thereby preventing the detection range of the user's movements from deviating from a predetermined range.

[0084] Furthermore, forming the first restricting section 61, the second restricting section 62, and the third restricting section 63 integrally with the sensor bracket 52 reduces the number of parts compared to forming them separately with the sensor bracket 52. Therefore, by integrally forming the first restricting section 61, the second restricting section 62, and the third restricting section 63 with the sensor bracket 52, the manufacturing process can be simplified.

[0085] Furthermore, since the first restricting section 61, the second restricting section 62, and the third restricting section 63 are each rotatable between an unrestricted position and a restricted position, the positions of the first restricting section 61, the second restricting section 62, and the third restricting section 63 can be easily switched from the unrestricted position to the restricted position.

[0086] Furthermore, the vehicle structure equipped with the motion detection device 5 can prevent the detection range of the user's foot movement from narrowing in the vicinity of the portion of the sensor bracket 52 that should face the second support portion 46.

[0087] In the above embodiment, a recessed portion 521a was provided in the part of the sensor bracket 52 that should face the metal second support portion 46 of the carrier member 4, but it may be a flat portion, for example. In this case, a column portion may be provided in that part, and the first front detection portion 511a or the first rear detection portion 511b may be held by the column portion so that a gap is created between the first front detection portion 511a and the first rear detection portion 511b.

[0088] In the above embodiment, the first front detection unit 511a and the first rear detection unit 511b were constructed using a single first wire 511, but they may also be constructed using, for example, two wires. In other words, the first front detection unit 511a may be constructed using a part of one wire, while the second rear detection unit 512b may be constructed using a part of another wire.

[0089] In the above embodiment, the motion detection device 5 was fixed to the rear of the vehicle body 1 with bolts or the like, but it may also be fixed to, for example, the left side of the vehicle body 1 with bolts or the like.

[0090] In the above embodiment, the recessed portion 521a of the sensor bracket 52 faced the metal second support portion 46 of the carrier member 4, but it may also face a metal part of the vehicle body 1.

[0091] Although specific embodiments of the present invention have been described, this invention is not limited to the above embodiments and can be implemented with various modifications within the scope of the present invention. [Explanation of Symbols]

[0092] 61 First Regulatory Section 62 Second Regulatory Section 63 Third Regulatory Section 511 First power line 511a First front detection unit 511b First rear detection unit 512 Second Electric Wire 521a Recess 531 3rd front holding part 532 Third rear holding part

Claims

1. It consists of electric wires and first and second sensor electrodes for detecting capacitance, The sensor bracket to which the first and second sensor electrodes described above are attached In an action detection device equipped with, The portion of the sensor bracket that should face the metal part is provided with a spacing adjustment section for adjusting the distance between the first sensor electrode and the second sensor electrode so that a gap is created between them. Motion detection device.

2. The above-mentioned spacing adjustment portion is provided on the portion of the sensor bracket that should face the above-mentioned metal component, and is a recessed portion that is recessed in a direction away from the above-mentioned metal component. The motion detection device according to claim 1.

3. The spacing adjustment section is provided with a holding section for holding the first and second sensor electrodes so that when the sensor bracket is attached to the vehicle, the first sensor electrode is positioned above the second sensor electrode. The motion detection device according to claim 1 or 2.

4. The sensor bracket is provided with a restricting portion that restricts the movement of the first and second sensor electrodes away from the sensor bracket. The motion detection device according to claim 1 or 2.

5. The above-mentioned restricting portion is formed integrally with the sensor bracket. The motion detection device according to claim 4.

6. The restricting portion is connected to the edge of the sensor bracket and is rotatable between an unrestricted position, which is located outside the edge of the sensor bracket without overlapping it, and a restricting position, which overlaps it with the sensor bracket and clamps the first and second sensor electrodes with the sensor bracket. The motion detection device according to claim 4.

7. The motion detection device according to claim 1 or 2, The above metal parts and A vehicle structure that includes the following features.

Images