JP2012166702A - Position detecting device of side stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a position detecting device of a side stand capable of suppressing the generation of a variation in a detecting result caused by a variation in a magnetic force of a magnet.SOLUTION: The position detecting device 7 of the side stand includes the magnet 71, a Hall IC 72 arranged in a position opposed to the magnet 71, and a magnetic shielding plate 73 rotating accompanied by the rotational operation of the side stand. The magnetic shielding plate 73 is installed on a rotary member 5 fixed to a rotary shaft 6 rotating by being interlocked with the side stand, and the rotary member 5 is sandwiched by an upper case 3 and a lower case 4. The magnetic shielding plate 73 has a projection 73c. The projection 73c of the magnetic shielding plate 73 is positioned in a predetermined area between the magnet 71 and the Hall IC 72 when the side stand exists in a rising position, and positioned in an area of retreating from the predetermined area when the side stand exists in a storage position.

Description

  The present invention relates to a position detection device for a side stand that is rotatably provided on a motorcycle.

  In general, a side stand of a two-wheeled vehicle is attached to a bracket of the two-wheeled vehicle so as to be rotatable between a standing position and a storage position. If the two-wheeled vehicle travels while the side stand is in the standing position, the side stand hinders the traveling of the two-wheeled vehicle, and in the worst case, the two-wheeled vehicle falls over. Therefore, in order to prevent the two-wheeled vehicle from traveling when the side stand is in the standing position, a device that detects the position of the side stand and controls the permission / prohibition of traveling according to the detection result has been proposed (for example, Patent Literatures 1 to 3).

Patent Document 1 discloses a rotary sensor including a coil and a detection circuit that detects the orientation of the stand based on a change in inductance of the coil.
In this rotary sensor, the distance between the rotor and the coil changes as the rotor rotates together with the stand. As a result, the inductance of the coil changes. And in a two-wheeled vehicle, based on the change of the inductance of a coil, it is determined whether a stand is a standing state.

  However, in the rotary sensor disclosed in Patent Document 1, when the stand is stationary, the inductance of the coil does not change, so it is impossible to always detect whether the stand is in the standing state.

  Patent Document 2 discloses a position detection device for a side stand that includes a magnet plate and a Hall IC disposed at a position facing the magnet plate. In this side stand position detection device, the polarity of the magnet plate facing the Hall IC is switched by rotating the magnet plate together with the side stand. Thereby, the on / off state of the output signal of the Hall IC is switched. In a two-wheeled vehicle, the position of the side stand is determined based on the on / off state of the output signal of the Hall IC.

  However, in the side stand position detection device disclosed in Patent Document 2, the polarity of the magnet plate facing the Hall IC is switched by rotating the magnet plate relative to the Hall IC. For this reason, variations in the output signal of the Hall IC are likely to occur due to variations in the magnetic force of the magnet plate. That is, variations in the detection results of the position of the side stand are likely to occur due to variations in the magnetic force of the magnet plates. In addition, the above-described variation in magnetic force includes a variation that occurs during the production of the magnet plate and a variation that occurs due to temperature.

  Further, Patent Document 3 discloses a position detection device for a side stand including a rotating member having a magnet surface and a reed switch disposed at a position facing the magnet surface. In this side stand position detecting device, the rotating member rotates together with the side stand, whereby the polarity of the magnet surface facing the reed switch is switched. Thereby, the on / off state of the reed switch is switched. In a motorcycle, the position of the side stand is determined based on the on / off state of the reed switch.

  However, the side stand position detection device of Patent Document 3 also has the same problems as Patent Document 2.

JP 2010-163093 A JP 2008-130314 A JP 2004-355903 A

  The subject of this invention is providing the position detection apparatus of the side stand which can suppress that a dispersion | variation generate | occur | produces in a detection result resulting from the dispersion | variation in the magnetic force of a magnet.

  The position detection device for a side stand according to the present invention includes a magnet and a magnetic sensor disposed at a position facing the magnet in a position detection device for a side stand provided on a two-wheeled vehicle so as to be rotatable between a standing position and a storage position And a movable member that moves as the side stand rotates. And the magnet, the magnetic sensor, and the movable member are arrange | positioned inside the fixed member which consists of an upper case and a lower case. In addition, a movable member is attached to a rotating member that is sandwiched between the upper case and the lower case and connected to a rotating shaft that rotates in conjunction with the rotating operation of the side stand. When the side stand is in one of the standing position and the storage position, the movable member is positioned in a predetermined area between the magnet and the magnetic sensor, thereby shielding the magnetic sensor from the magnetic field by the magnet, and the side stand is in the standing position. And when it is in the other of the storage positions, it is located in the area retracted from the predetermined area.

  With this configuration, whether or not the magnetic sensor is shielded from the magnetic field by the magnet is switched depending on whether or not the movable member that moves in accordance with the turning operation of the side stand is located in the predetermined region. Therefore, compared with the case where the magnet rotates with respect to the magnetic sensor, even when the magnetic force of the magnet varies, it is possible to suppress the occurrence of variations in the detection position of the side stand when the output signal of the magnetic sensor is switched. The detection error can be reduced.

  In the side stand position detection device, packing may be provided in the gap between the rotating member and the upper case and in the gap between the rotating member and the lower case.

  With this configuration, it is possible to prevent water or dust from entering the space inside the case along the gap formed between the upper and lower cases and the rotating member. Thereby, it can avoid that a magnet or a movable member gets wet or rusts, and magnetic characteristics change. In addition, unlike the oil seal, the packing is thin in the axial direction of the rotating shaft and easy to assemble, so the side stand position detection device can be made thinner and the cost of assembly can be reduced. I can do it.

  In the position detection device for the side stand, grooves facing each other may be provided on the upper case side and the lower case side of the rotating member, and packings may be disposed in these groove portions, respectively.

  By configuring in this way, even if the rotating member rotates in conjunction with the side stand, it is possible to suppress the displacement of the packing in the radial direction of the rotating member, so that the waterproof and dustproof functions can be further enhanced. In addition, the apparatus can be further reduced in thickness in the axial direction of the rotation shaft as compared with the case where packing is disposed on the front and back surfaces of the rotating member. Further, the apparatus can be made thinner in the radial direction of the rotating member as compared with the case where the groove portions are provided so as not to face each other.

  The position detection device for the side stand may further include a determination circuit that determines the position of the side stand based on an output signal of the magnetic sensor.

  In this case, the determination circuit may include an output circuit for outputting the determination result of the position of the side stand to the outside.

  In the position detection device for the side stand, the movable member has a disk part attached to the rotating member, and a protrusion formed on the outer periphery of the disk part so as to protrude in the radial direction of the disk part, The protrusion of the movable member may be located in a predetermined region between the magnet and the magnetic sensor when the side stand is in the standing position or the storage position.

  ADVANTAGE OF THE INVENTION According to this invention, the position detection apparatus of the side stand which can suppress that dispersion | variation generate | occur | produces in a detection result resulting from the dispersion | variation in the magnetic force of a magnet can be provided.

It is the top view which showed the side stand apparatus provided with the position detection apparatus of the side stand by one Embodiment of this invention. It is A-A 'sectional drawing of the side stand apparatus of FIG. It is the top view which showed the state in which the side stand of the side stand apparatus of FIG. 1 is located in a storage position. FIG. 4 is a B-B ′ sectional view of the side stand device of FIG. 3. It is a principal part disassembled perspective view of the side stand apparatus of FIG. It is a principal part disassembled perspective view at the time of upside down of FIG. It is the perspective view which showed the state which attached the magnetic-shield board to the rotating member. It is a figure for demonstrating operation | movement of the position detection apparatus of the side stand of FIG. It is a figure for demonstrating operation | movement of the position detection apparatus of the side stand of FIG. It is a figure for demonstrating operation | movement of the position detection apparatus of the side stand of FIG. It is a figure for demonstrating operation | movement of the position detection apparatus of the side stand of FIG. It is the graph which showed the change of magnetic flux density when a magnetic shielding board moves to a magnet and Hall IC. It is the graph which showed the change of magnetic flux density when a magnet moves to Hall IC.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, with reference to FIGS. 1-7, the structure of the position detection apparatus 7 and the side stand apparatus 100 of the side stand by one Embodiment of this invention is demonstrated. 1 to 6, illustrations of a vehicle body frame F, a side stand S, and a wire harness 76 which will be described later are omitted in the drawings other than FIGS. 1 and 3.

  The side stand device 100 is attached to a body frame F of a motorcycle as shown in FIGS. The side stand device 100 includes a side stand S, a holding member 1, a fixing member 2, a rotating shaft 6, and a side stand position detecting device 7 (see FIG. 5).

  The side stand S is held by the holding member 1. The holding member 1 is rotatably attached to the fixed member 2 via a rotation shaft 6 that rotates in conjunction with the side stand S. The fixing member 2 is fixed to the vehicle body frame F.

  As shown in FIG. 5, a U-shaped wall portion 10 is formed on the surface 1 a (the surface on the side stand S side) of the holding member 1. Further, as shown in FIG. 6, a cylindrical large-diameter convex portion 11 and a cylindrical small-diameter convex portion that is continuous with the convex portion 11 are formed on the back surface 1 b (surface on the fixing member 2 side) of the holding member 1. Part 13 is provided.

  A concave portion 12 is formed inside the convex portion 11 as shown in FIG. A through hole 14 that communicates with the recess 12 is provided at the center of the protrusion 13. The rotation shaft 6 is fitted in the through hole 14.

  The fixing member 2 is a pair of upper and lower cases including an upper case 3 and a lower case 4 (see FIG. 5). A gap between the holding member 1 and the upper case 3 is sealed with a packing 86 (see FIG. 2).

  As shown in FIG. 5, a circular recess 31 is formed on the surface 3 a (the surface on the holding member 1 side) of the upper case 3. A through hole 32 is provided at the center of the recess 31. Further, as shown in FIG. 6, on the back surface 3 b (surface on the lower case 4 side) of the upper case 3, a cylindrical convex portion 35 surrounding the through hole 32, a groove portion 33 surrounding the convex portion 35, and this A groove 34 surrounding the groove 33 is formed.

  The groove width of the groove portion 33 (the width in the radial direction of the through hole 32) is larger than the groove width of the groove portion 34. A rectangular recess 36 is formed in a part of the groove 33.

  An O-ring 87 that seals the gap between the upper case 3 and the lower case 4 is fitted in the groove 34 (see FIG. 2).

  As shown in FIGS. 2 and 5, a first housing portion 41 and a circular recess 42 are formed on the surface 4 a (surface on the upper case 3 side) of the lower case 4.

  The first accommodating portion 41 is supported on the surface 4 a by a support portion 43 that extends in a substantially vertical upward direction (direction on the upper case 3 side) with respect to the surface 4 a of the lower case 4. A magnet 71 is accommodated in the first accommodating portion 41. Moreover, the 1st accommodating part 41 is accommodated in the recessed part 36 of the upper case 3 in the inside of the fixing member 2 (refer FIG. 2).

  As shown in FIGS. 2 and 6, a cylindrical convex portion 49 is provided on the back surface 4 b of the lower case 4. The inside of the convex portion 49 is the aforementioned concave portion 42 (see FIG. 5). A through hole 44 is provided at the center of the recess 42. The hole diameter of the through hole 44 and the hole diameter of the through hole 32 of the upper case 3 are substantially the same (see FIG. 2).

  Further, as shown in FIG. 5, a cylindrical convex portion 46 surrounding the through hole 44 and a groove portion 45 surrounding the convex portion 46 are formed on the bottom surface of the concave portion 42. The convex portion 46 and the convex portion 35 of the upper case 3 have substantially the same radial width (see FIG. 2).

  As shown in FIG. 6, the second housing portion 47 is provided on the back surface 4 b of the lower case 4. A printed circuit board 75 described later is accommodated in the second accommodating portion 47. The 2nd accommodating part 47 is sealed by the cover part 48 (refer FIG. 2).

  Moreover, the 2nd accommodating part 47 is adjacent to the outer surface of the convex part 49, and is extended in the tangential direction with respect to the radial direction of the said convex part 49 (refer FIG. 6). The 1st accommodating part 41 (refer FIG. 5) by the surface 4a side exists in the position corresponding to a part of 2nd accommodating part 47 (refer FIG. 2).

  Inside the fixed member 2, that is, between the upper case 3 and the lower case 4, there is provided a rotating member 5 that holds the rotating shaft 6 and rotates together with the rotating shaft 6 (see FIG. 2). ). A through hole 51 is provided at the center of the rotating member 5. The diameter of the through hole 51 is substantially the same as the diameter of the through hole 14 provided in the holding member 1.

  As shown in FIG. 5, on the front side (upper case 3 side) of the rotating member 5, a cylindrical convex portion 53 that surrounds the through hole 51, a groove portion 52 that surrounds this convex portion 53, and a cylinder that surrounds this groove portion 52. A convex portion 54 is formed. The convex portion 54 constitutes an outer edge portion of the rotating member 5. Four protrusions 55 for attaching a magnetic shielding plate 73 described later are formed on the upper end surface of the convex portion 54.

  As shown in FIG. 6, on the back side (lower case 4 side) of the rotating member 5, a cylindrical convex portion 57 surrounding the through hole 51, a groove portion 56 surrounding the convex portion 57, and a cylinder surrounding the groove portion 56. A convex portion 58 is formed. The front-side convex portion 53 and the back-side convex portion 57, and the front-side convex portion 54 and the back-side convex portion 58 are continuous (see FIG. 2). Further, the front-side groove portion 52 and the back-side groove portion 56 face each other.

  In the rotating member 5 having the above configuration, the groove widths of the groove portion 52 and the groove portion 56 (the width in the radial direction of the through hole 51) are substantially the same. The sizes of the convex portion 53 and the convex portion 57 are also substantially the same, and the sizes of the convex portion 54 and the convex portion 58 are also substantially the same.

  As described above, in the rotating member 5, the groove portions 52 and 56 are formed to face each other on both the front side and the back side. For this reason, the left and right cross sections of the rotating member 5 sandwiching the through hole 51 are substantially H-shaped (see FIG. 2).

  As shown in FIG. 2, the rotating member 5 having the above structure fits the groove portion 52 and the convex portion 35 of the upper case 3 and also fits the groove portion 56 and the convex portion 46 of the lower case 4. It is accommodated inside the fixing member 2. Further, in the side stand device 100 of the present embodiment, a packing 81 is provided between the groove portion 52 and the convex portion 35 in order to seal the gap between the upper case 3 and the rotating member 5. Similarly, a packing 82 is provided between the groove portion 56 and the convex portion 46 in order to seal the gap between the rotating member 5 and the lower case 4. A broken line arrow L in FIGS. 2 and 4 represents an intrusion route for water or dust, which will be described later.

  The rotating shaft 6 is formed in a cylindrical shape and includes cylindrical portions 61 and 62 having different outer diameters. Specifically, the outer diameter of the cylindrical portion 61 is shorter than the outer diameter of the cylindrical portion 62 and slightly shorter than the hole diameter of the through hole 14 of the holding member 1 and the hole diameter of the through hole 51 of the rotating member 5. The outer diameter of the cylindrical portion 62 is longer than the hole diameter of the through hole 14 and the hole diameter of the through hole 51, and slightly longer than the hole diameter of the through hole 44 of the lower case 4.

  As shown in FIG. 2, the rotating shaft 6 is fitted into the through hole 14 of the holding member 1 and the through hole 51 of the rotating member 5. Thereby, the holding member 1 and the rotating member 5 are connected to the rotating shaft 6 and are attached to the fixed member 2 so as to be rotatable together with the rotating shaft 6. The gap between the rotating shaft 6 and the lower case 4 is sealed with a packing 88.

  The side stand position detection device 7 (see FIG. 5) according to the present embodiment is provided inside the fixing member 2 and includes a magnet 71, a Hall IC 72, a magnetic shielding plate 73, and a determination circuit 74. . The Hall IC 72 is an example of the “magnetic sensor” in the present invention, and the magnetic shielding plate 73 is an example of the “movable member” in the present invention.

  The magnet 71 is accommodated in the first accommodating portion 41 of the lower case 4 as described above. The Hall IC 72 is attached to the printed circuit board 75 so as to be disposed at a position facing the magnet 71. The Hall IC 72 outputs a signal of L (Low) level or H (High) level to the determination circuit 74 according to the strength of the detected magnetic field T (see FIGS. 8B and 9B).

  The magnetic shielding plate 73 is made of a ferromagnetic material such as iron. As shown in FIG. 5, the magnetic shielding plate 73 is formed so as to protrude in the radial direction of the disc portion 73 b on the disc portion 73 b in which the mounting hole 73 a is formed and on the outer periphery of the disc portion 73 b. And a protrusion 73c.

  The diameter of the mounting hole 73 a is longer than the outer diameter of the through hole 51 of the rotating member 5 and is substantially the same length as the inner diameter of the convex portion 54. In addition, four notches 73d corresponding to the protrusions 55 of the protrusions 54 are formed in the mounting holes 73a.

  The notch 73d has a slightly larger shape than the protrusion 55. Then, as shown in FIG. 7, when the notch 73 d of the mounting hole 73 a is fitted into the protrusion 55 of the rotating member 5, the magnetic shielding plate 73 can rotate with the rotating member 5 in a rotatable state. It is attached to the member 5. Therefore, the magnetic shield 73 can be rotated together with the rotating shaft 6 fitted in the rotating member 5.

  The determination circuit 74 (see FIG. 5) is formed on the printed circuit board 75. The determination circuit 74 determines the position of the side stand S based on the output signal of the Hall IC 72 and outputs the determination result to a control unit (not shown) of the motorcycle. The determination result is output from the output circuit 77 included in the determination circuit 74 to the control unit of the motorcycle via the wire harness 76 (see FIG. 1) connected to the printed circuit board 75.

  As described above, the printed circuit board 75 having the Hall IC 72 and the determination circuit 74 is accommodated in the second accommodating portion 47 of the lower case 4 and is sealed by the lid portion 48 (see FIG. 2). A part of the wire harness 76 is exposed to the outside through an opening (not shown) formed in the second housing portion 47 (see FIG. 1).

  In the side stand device 100, the side stand S is provided so as to be rotatable between a standing position (see FIG. 1) and a storage position (see FIG. 3). Here, the standing position is a position where the side stand S faces downward with respect to the motorcycle, and supports the motorcycle so that the motorcycle does not fall down when the motorcycle is parked by the side stand S coming into contact with the ground. Position. Further, the storage position is a position where the side stand S faces rearward with respect to the motorcycle, and is a position where the side stand S is retracted from the standing position so that the side stand S does not contact the ground when the motorcycle is traveling. The side stand S is urged toward the standing position or the storage position by an urging member (not shown), and is located at the standing position or the storage position.

  Next, operations of the side stand position detection device 7 and the side stand device 100 according to the present embodiment will be described with reference to FIGS.

(Standing position)
First, as shown in FIGS. 1 and 8 (a), when the side stand S is in the upright position, as shown in FIGS. 8 (a) and 8 (b), the protrusion 73c of the magnetic shielding plate 73 is a magnet. It is located in the predetermined area | region R between 71 and Hall IC72 (state of FIG. 2). Here, the predetermined region R is a region formed by a magnetic field T (see FIG. 8B) generated between the magnet 71 and the Hall IC 72. In the state of FIG. 8A, the Hall IC 72 is shielded from the magnetic field T by the magnet 71 by the protrusion 73 c of the magnetic shielding plate 73 in the predetermined region R. Accordingly, the Hall IC 72 outputs an L level signal to the determination circuit 74 (see FIG. 5).

  At this time, the determination circuit 74 determines that the side stand S is in the upright position when an L level signal is input from the Hall IC 72, and the determination result is output from the output circuit 77 to the motorcycle control unit (illustrated). (Omitted). In the motorcycle, when the determination result that the side stand S is in the upright position is input, the start of the engine (not shown) is prohibited and the vehicle cannot run. The standing position is, for example, a position inclined about 15 degrees forward (in the direction of arrow C in FIG. 8A) with respect to the vertical direction about the rotation shaft 6.

(Standing position → storage position)
Next, when the side stand S is rotated in the A direction from the standing position illustrated in FIG. 8A, the holding member 1, the rotation shaft 6, and the magnetic shielding plate 73 are also used for the rotation operation of the side stand S. Accordingly, it rotates in the A direction. Then, in the process in which the side stand S is rotated to the storage position, as shown in FIGS. 9A and 9B, the protrusion 73 c of the magnetic shielding plate 73 moves from the predetermined region R between the magnet 71 and the Hall IC 72. evacuate. For this reason, when the protruding portion 73c of the magnetic shielding plate 73 is located in a region other than the predetermined region R, the shielding state by the protruding portion 73c of the magnetic shielding plate 73 is released, and the intensity of the magnetic field T detected by the Hall IC 72 is increased. growing.

  When the intensity of the magnetic field T detected by the Hall IC 72 becomes larger than a predetermined value, the signal output from the Hall IC 72 is switched from the L level to the H level. At this time, the determination circuit 74 (see FIG. 5) determines that the side stand S is in the storage position when an H level signal is input from the Hall IC 72, and the determination result is output from the output circuit 77 to the motorcycle. To the control unit (not shown). Note that the position where the output signal is switched from the L level to the H level, for example, tilts about 60 degrees backward (in the direction of arrow D in FIG. 9A) with respect to the vertical direction around the rotation shaft 6. Position.

  Thereafter, as shown in FIGS. 3 and 10, the side stand S is rotated to the storage position (the state shown in FIG. 4). At this time, in the motorcycle, when the determination result that the side stand S is in the storage position is input, the engine (not shown) can be started and the vehicle can run. The storage position is, for example, a position inclined about 90 degrees rearward (in the direction of arrow D in FIG. 9A) with respect to the vertical direction about the rotation shaft 6.

(Storage position → Standing position)
Next, when the side stand S is rotated in the B direction from the storage position illustrated in FIG. 10, the holding member 1, the rotation shaft 6, and the magnetic shielding plate 73 are also moved along with the rotation of the side stand S. Rotate in the direction. Then, in the process in which the side stand S is rotated to the standing position, as shown in FIG. 11, the protrusion 73 c of the magnetic shielding plate 73 enters a predetermined region R between the magnet 71 and the Hall IC 72. For this reason, the hall | hole IC72 is shielded from the magnetic field T by the magnet 71 by the protrusion part 73c of the magnetic shielding board 73, and the intensity | strength of the magnetic field T detected by the Hall IC72 becomes small (refer FIG.8 (b)).

  When the intensity of the magnetic field T detected by the Hall IC 72 becomes smaller than a predetermined value, the signal output from the Hall IC 72 is switched from the H level to the L level. This predetermined value is different from the predetermined value when the signal is switched from the L level to the H level due to the hysteresis of the characteristics of the Hall IC 72. Therefore, the position where the output signal is switched from the H level to the L level is, for example, a position inclined about 30 degrees backward (in the direction of arrow D in FIG. 11) with respect to the vertical direction around the rotation shaft 6. .

  At this time, the determination circuit 74 (see FIG. 5) determines that the side stand S is in the standing position when an L level signal is input from the Hall IC 72, and the determination result is output from the output circuit 77 to the motorcycle. To the control unit (not shown). Thereafter, as shown in FIGS. 1 and 8A, the side stand S is rotated to the standing position. At this time, in the motorcycle, when the determination result that the side stand S is in the upright position is input, the start of the engine (not shown) is prohibited and the vehicle cannot run.

  In the present embodiment, as described above, whether or not the protrusion 73c of the magnetic shielding plate 73 that rotates in accordance with the rotation operation of the side stand S is located in the predetermined region R between the magnet 71 and the Hall IC 72. Thus, whether to shield the Hall IC 72 from the magnetic field T by the magnet 71 is switched. For this reason, compared with the case where the magnet rotates with respect to the magnetic sensor, even when the magnetic force of the magnet 71 varies, the detection position (detection angle) of the side stand S when the output signal of the Hall IC 72 is switched varies. Can be suppressed. That is, the detection error of the position of the side stand S can be reduced.

  Further, in the present embodiment, when the side stand S is in the standing position, the projecting portion 73c of the magnetic shielding plate 73 is interposed between the magnet 71 and the Hall IC 72, and the Hall IC 72 outputs an “L” level signal. Output. For this reason, even when the distance between the magnet 71 and the Hall IC 72 is increased due to the vibration of the side stand S, the Hall IC 72 continuously outputs an “L level” signal. Therefore, it is not erroneously determined that the position of the side stand S is the storage position due to vibration. As a result, the motorcycle can be prevented from being able to travel with the side stand S standing up, and safety can be ensured. In the present embodiment, when the side stand S is in the storage position, the Hall IC 72 outputs an L level signal due to a decrease in the strength of the magnetic field T detected by the Hall IC 72 due to vibration. In this case, the determination circuit 74 may remove it as noise.

  In the present embodiment, the position (detection angle) of the side stand S when the output signal of the Hall IC 72 is easily switched by adjusting the position of the protrusion 73c of the magnetic shielding plate 73 and the length in the circumferential direction. Can be adjusted. Therefore, the position detection device 7 for the side stand according to the present embodiment can be easily applied to various motorcycles having different detection angles.

  Next, a comparative experiment performed to confirm the effect of the above-described embodiment will be described. In this experiment, a change in magnetic flux density when the magnetic shielding plate moves with respect to the magnet and the Hall IC and a change in magnetic flux density when the magnet moves with respect to the Hall IC were measured. These measurements were made for every three magnets using three magnets with different magnetic forces. The measurement results are shown in FIGS. The magnetic flux density Brp at which the output signal of the Hall IC switches from the H level to the L level is 4 mT.

  When the magnetic shielding plate moves relative to the magnet and the Hall IC (in the present invention), as shown in FIG. 12, the error E1 of the movement amount due to the magnetic force of the magnet when the magnetic flux density is 4 mT is about 1 mm. there were. On the other hand, when the magnet moves with respect to the Hall IC (comparative example), as shown in FIG. 13, the error E2 of the moving amount due to the magnetic force of the magnet when the magnetic flux density is 4 mT was about 2 mm. .

  Therefore, in the case where there is a variation in the magnetic force of the magnet, the output signal of the Hall IC is switched when the shield plate moves relative to the magnet and the Hall IC compared to when the magnet moves relative to the Hall IC. It was found that variation in the amount of movement at the time can be suppressed.

  Further, in the present embodiment, as shown in FIGS. 2 and 4, the rotating member 5 is provided with groove portions 52 and 56 facing each other so that the left and right cross sections of the rotating member 5 are substantially H-shaped. Yes. Then, the convex portion 35 of the upper case 3 is fitted in the groove portion 52 on the front side of the rotating member 5, and the convex portion 46 of the lower case 4 is fitted in the groove portion 56 on the back side. With such a fitting structure, the thickness of the fixing member 2 constituted by the upper case 3 and the lower case 4 in the vertical direction (the axial direction of the rotating shaft 6) can be reduced.

  Further, in the present embodiment, packings 81 and 82 are provided in the grooves 52 and 56 of the rotating member 5, respectively, so that a gap between the upper case 3 and the rotating member 5 and a gap between the rotating member 5 and the lower case 4 are provided. It is sealed. For this reason, for example, when the packing 86 or the packing 88 is worn out or the like with the rotation of the holding member 1 or the rotating member 5, water or dust is held along the broken line arrow L in FIGS. Even when entering the gap between the member 1 and the upper case 3 or the gap between the rotating shaft 6 and the lower case 4, the packings 81 and 82 can prevent entry into the space inside the case.

  Thereby, it can avoid that the magnet 71 and the magnetic-shield board 73 get wet or rust and a magnetic characteristic changes. In particular, by disposing the packings 81 and 82 in the groove portions 52 and 56, even if the rotating member 5 rotates in conjunction with the side stand S, the displacement of the packing in the radial direction of the rotating member 5 can be suppressed. Therefore, the waterproof and dustproof functions can be further enhanced.

  Further, unlike the oil seal, the packings 81 and 82 are thin in the axial direction of the rotary shaft 6 and easy to be assembled. Therefore, the cost associated with reducing the thickness of the side stand position detector 7 and reducing the number of assembly steps. Reduction can be achieved.

  Furthermore, the apparatus can be further reduced in thickness in the axial direction of the rotation shaft 6 as compared with the case where the packings 81 and 82 are disposed on the front and back surfaces of the rotating member 5. In addition, the apparatus can be made thinner in the radial direction of the rotating member 5 than when the groove portions 52 and 56 are provided so as not to face each other.

  The present invention can employ various embodiments other than those described above. For example, in the above embodiment, when the side stand S is in the standing position, the protrusion 73c of the magnetic shielding plate 73 is located in the predetermined region R between the magnet 71 and the Hall IC 72, and the side stand S is in the storage position. The example in which the protruding portion 73c of the magnetic shielding plate 73 is located in the area retracted from the predetermined area R is shown. However, the present invention is not limited to this, and when the side stand S is in the storage position, the protruding portion 73c of the magnetic shielding plate 73 is located in the predetermined region R, and when the side stand S is in the standing position, the protruding portion of the magnetic shielding plate 73. 73c may be located in a region that is retracted from the predetermined region R. That is, when the side stand S is in the standing position, the Hall IC 72 is shielded from the magnetic field T by the magnet 71, and when the side stand S is in the storage position, the shielding state may be released. The Hall IC 72 may be shielded when in the stowed position, and the shielded state may be released when the side stand S is in the standing position.

  In the above embodiment, the example in which the determination circuit 74 is provided in the position detection device 7 of the side stand has been described. However, the present invention is not limited thereto, and the determination circuit may be provided in the control unit of the motorcycle.

  In the above embodiment, the Hall IC 72 is shown as an example of the magnetic sensor. However, the present invention is not limited to this, and other magnetic sensors such as a magnetoresistive element and a reed switch may be used.

  Further, the shape and material of the packings 81 and 82 are not limited to specific ones. For example, the shape of the packings 81 and 82 may be a polygon instead of a circle. Moreover, you may process unevenness | corrugation etc. on the surface of packing 81,82 according to a use. Furthermore, the material of the packings 81 and 82 can be selected from various materials such as an elastic body such as rubber and elastomer, resin, and metal.

2 Fixing member 3 Upper case 4 Lower case 5 Rotating member 52, 56 Groove 6 Rotating shaft 7 Side stand position detecting device 71 Magnet 72 Hall IC (magnetic sensor)
73 Magnetic shield (movable member)
73b Disc part 73c Projection part 74 Judgment circuit 77 Output circuit 81, 82 Packing S Side stand

Claims (6)

In the position detection device of the side stand provided in the two-wheeled vehicle so as to be rotatable between the standing position and the storage position,
Magnets,
A magnetic sensor disposed at a position facing the magnet;
A movable member that moves in accordance with the pivoting movement of the side stand,
Arranging the magnet, the magnetic sensor, and the movable member inside a fixed member composed of an upper case and a lower case,
The movable member is attached to a rotating member that is sandwiched between the upper case and the lower case and connected to a rotating shaft that rotates in conjunction with the rotating operation of the side stand,
The movable member is
When the side stand is in one of a standing position and a storage position, the magnetic sensor is shielded from a magnetic field by the magnet by being positioned in a predetermined region between the magnet and the magnetic sensor,
The side stand position detection device, wherein the side stand is located in an area retracted from the predetermined area when the side stand is in the other of the standing position and the storage position. In the position detection apparatus of the side stand of Claim 1,
A side stand position detecting device, wherein packing is provided in a gap between the rotating member and the upper case and a gap between the rotating member and the lower case. In the position detection apparatus of the side stand of Claim 2,
While providing a groove portion facing each other on the upper case side and the lower case side of the rotating member,
A side stand position detection device, wherein the packing is disposed in each of the grooves. In the position detection apparatus of the side stand in any one of Claim 1 thru | or 3,
A side stand position detecting apparatus, further comprising: a determination circuit that determines a position of the side stand based on an output signal of the magnetic sensor. In the position detection apparatus of the side stand of Claim 4,
The position detection device for a side stand, wherein the determination circuit includes an output circuit for outputting a determination result of the position of the side stand to the outside. In the position detection apparatus of the side stand in any one of Claim 1 thru | or 5,
The movable member has a disk part attached to the rotating member, and a protrusion formed on the outer periphery of the disk part so as to protrude in the radial direction of the disk part,
The position detection device for a side stand, wherein the protruding portion of the movable member is located in the predetermined region when the side stand is in a standing position or a storage position.

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