Wheel speed sensor and fixture for wheel speed sensor

Abstract

To provide a wheel speed sensor and a jig for a wheel speed sensor capable of improving detection accuracy of the rotational speed of a wheel.SOLUTION: A wheel speed sensor includes: a sensor mount fixed to a brake device of a human powered vehicle; and a sensor fixed to the sensor mount so as to be positionally adjustable and detecting the rotational speed of the wheel of the human powered vehicle. A jig for the wheel speed sensor includes an insertion part inserted between a sensor ring rotating integrally with the wheel of the human powered vehicle and the wheel speed sensor, and defines a distance between the wheel speed sensor capable of adjusting a position with respect to the sensor ring and the sensor ring.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a wheel speed sensor and a fixture for a wheel speed sensor. [Background technology]

[0002] There is a human-powered vehicle equipped with a wheel speed sensor. The wheel speed sensor is placed with a small gap from the sensor ring. The sensor ring has detection holes for detecting the speed around its entire circumference and rotates together with the wheel.

[0003] The wheel speed sensor has a permanent magnet and a coil, and generates magnetic lines of force around the sensor ring. When the sensor ring rotates and the detection hole passes in front of the vehicle speed sensor, the magnetic flux density of the magnetic lines changes periodically. The vehicle speed sensor outputs an AC current that flows through the coil due to the change in magnetic flux density as a signal indicating the rotation speed of the wheel. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-100540 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a wheel speed sensor and a jig for a wheel speed sensor that can improve the accuracy of detecting the rotational speed of a wheel. [Means for solving the problem]

[0006] A wheel speed sensor according to a first aspect includes a sensor mount fixed to a brake device of a human-powered vehicle, and a sensor that is positionally adjustable and fixed to the sensor mount and detects the rotational speed of a wheel of the human-powered vehicle. According to the first aspect, the wheel speed sensor can improve the detection accuracy of the wheel rotational speed by adjusting the position of the sensor to an optimal position with respect to the sensor mount.

[0007] The sensor of the second side according to the first side is fixed to the sensor mount so as to be movable in a direction parallel to the axial direction of the hub axle of the wheel. According to the second side, when there is a variation in the dimensions of each component, the wheel speed sensor can improve the detection accuracy of the wheel rotation speed by adjusting the position in the direction parallel to the axial direction.

[0008] The sensor mount of a third aspect according to the second aspect has a through hole penetrating in a direction parallel to the axial direction, and the sensor is inserted into the through hole and fixed. According to the third aspect, the wheel speed sensor can move in the axial direction within the through hole, so that the position of the wheel speed sensor in the direction parallel to the axial direction can be adjusted.

[0009] The wheel speed sensor of a fourth aspect according to any one of the first to third aspects further includes a sensor fixing member that fixes the sensor to the sensor mount. According to the fourth aspect, the wheel speed sensor can be fixed at an adjusted position by the sensor fixing member.

[0010] The sensor on a fifth side surface following any one of the second to fourth side surfaces has an elongated hole whose longitudinal direction is parallel to the axial direction, and is fixed to the sensor mount by the sensor fixing member inserted into the elongated hole. According to the fifth side surface, the sensor fixing member can fix the sensor at any position within the elongated hole.

[0011] The sensor fixing member of a sixth aspect according to the fourth or fifth aspect is a bolt having a male thread. According to the sixth aspect, the sensor fixing member can fix the sensor to the sensor mount by the male thread that is screwed into the elongated hole.

[0012] At least one of the sensor mount and the sensor of a seventh side according to the sixth side has a female thread portion that screws into the male thread portion of the sensor fixing member. According to the seventh side, the sensor fixing member can fix the sensor to the sensor mount by screwing the male thread portion into the female thread portion.

[0013] The brake device of an eighth aspect according to any one of the first to seventh aspects is fixed to a vehicle body of the human-powered vehicle by a brake fixing member, and the sensor mount is fixed to the brake device by the brake fixing member. According to the eighth aspect, the sensor mount can be fixed to the brake device by an existing brake fixing member used to fix the brake device to the vehicle body.

[0014] The sensor of the ninth aspect according to any one of the first to eighth aspects is adjustable within a predetermined range relative to the sensor mount. According to the ninth aspect, the sensor can be fixed at any position within the predetermined range.

[0015] A wheel speed sensor according to a tenth aspect of the present invention includes a restriction mechanism between the sensor and the sensor mount, the restriction mechanism restricting the sensor from moving beyond a predetermined range relative to the sensor mount. According to the tenth aspect, the wheel speed sensor can prevent the sensor from falling off due to the sensor moving beyond the predetermined range.

[0016] The through hole in the eleventh side surface according to the third side surface has a first opening on a side facing the sensor ring and a second opening on an opposite side to the side facing the sensor ring, the area of ​​the first opening being larger than the area of ​​the second opening, and the sensor is inserted into the through hole from the first opening and fixed. According to the eleventh side surface, even if the sensor fixing member falls off from the sensor mount, the wheel speed sensor can prevent the sensor from falling off from the surface of the sensor mount opposite to the side facing the sensor ring.

[0017] The through hole in the twelfth side surface according to the third side surface has a first opening on a side facing the sensor ring and a second opening on an opposite side to the side facing the sensor ring, the area of ​​the first opening and the area of ​​the second opening are equal, the area of ​​the sensor on the side facing the sensor ring is larger than the area of ​​the opening of the sensor mount on the side facing the sensor ring, and the sensor is inserted into the through hole from the first opening and fixed. According to the twelfth side surface, even if the sensor fixing member falls off from the sensor mount, the wheel speed sensor can prevent the sensor from falling off from the surface of the sensor mount opposite the side facing the sensor ring.

[0018] A jig for a wheel speed sensor according to a thirteenth aspect has an insertion portion that is inserted between a sensor ring that rotates integrally with the wheel of a human-powered vehicle and a wheel speed sensor, and determines the distance between the wheel speed sensor, the position of which relative to the sensor ring is adjustable, and the sensor ring. According to the thirteenth aspect, the jig for a wheel speed sensor can easily adjust the distance between the sensor and the sensor ring to a predetermined distance, thereby improving the efficiency and accuracy of work when attaching the sensor.

[0019] The jig for the wheel speed sensor of a fourteenth aspect according to the thirteenth aspect further includes a slit in which the sensor ring is disposed when the insertion portion is inserted between the sensor ring and the wheel speed sensor. According to the fourteenth aspect, the jig for the wheel speed sensor can be prevented from being misaligned in a direction parallel to the axial direction of the hub axle.

[0020] The jig of a 15th side surface according to the 13th or 14th side surface has a first axial length in a direction parallel to an axial direction of a hub axle of the wheel, and the insertion portion has a second axial length in a direction parallel to the axial direction, and the first axial length is greater than twice the second axial length. According to the 15th side surface, the jig for a wheel speed sensor can be easily gripped.

[0021] The sensor ring of a sixteenth side face corresponding to any one of the thirteenth to fifteenth side faces has a detection hole for detecting speed, and the insertion portion is provided so as to at least partially overlap with the detection hole when viewed from a direction parallel to the axial direction when the insertion portion is inserted between the sensor ring and the wheel speed sensor. According to the sixteenth side face, the jig for the wheel speed sensor can easily adjust the distance between the sensor and the detection hole to a predetermined distance.

[0022] The jig for the wheel speed sensor of a 17th side according to any one of the 13th to 16th side has an uneven portion including at least one of a concave and a convex on an outer surface. According to the 17th side, the jig for the wheel speed sensor can be easily held.

[0023] The non-smooth portion of the eighteenth side surface according to the seventeenth side surface is a jig through hole extending in a direction parallel to the axial direction. According to the eighteenth side surface, the jig for the wheel speed sensor can be easily gripped. Effect of the Invention

[0024] According to the present invention, the wheel speed sensor and the jig for the wheel speed sensor can improve the detection accuracy of the rotational speed of the wheel. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a side view of a human-powered vehicle. [Diagram 2] FIG. 2 is a perspective view of a brake device to which a wheel speed sensor is attached. [Diagram 3] FIG. 3 is a diagram showing the brake fixing member. [Figure 4] FIG. 4 is a diagram showing the sensor fixing portion. [Diagram 5] FIG. 5 is a perspective view of the brake device with the jig attached thereto. [Figure 6] FIG. 6 is a diagram showing the slits in the jig. [Figure 7] FIG. 7 is a diagram showing a jig through hole. [Figure 8] FIG. 8 is a schematic cross-sectional view of a wheel speed sensor according to a first modified example. [Figure 9] FIG. 9 is a schematic cross-sectional view of a wheel speed sensor according to a second modified example. [Figure 10] FIG. 10 is a schematic cross-sectional view of a wheel speed sensor according to a third modified example. [Figure 11] FIG. 11 is a schematic cross-sectional view of a wheel speed sensor according to a fourth modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] With reference to FIG. 1, a human-powered vehicle 10 having a gear shifting system according to an embodiment will be described. The human-powered vehicle 10 has at least one wheel and is a vehicle that can be driven at least by human-powered driving force. The human-powered vehicle 10 includes various types of bicycles, such as mountain bikes, road bikes, city bikes, cargo bikes, hand bikes, and recumbents. In one example, the human-powered vehicle 10 is a bicycle with two wheels. The number of wheels of the human-powered vehicle 10 is not limited. The human-powered vehicle 10 also includes, for example, one-wheeled vehicles and vehicles with three or more wheels. The human-powered vehicle 10 is not limited to vehicles that can be driven only by human-powered driving force. The human-powered vehicle 10 includes an e-bike that uses not only human-powered driving force but also the driving force of a driving device including an electric motor for propulsion. The e-bike includes an electrically assisted bicycle whose propulsion is assisted by an electric motor. In the following embodiment, the human-powered vehicle 10 will be described as a bicycle equipped with a driving device that assists human-powered driving force.

[0027] In this application, the following directional terms “front,” “rear,” “forward,” “backward,” “left,” “right,” “sideways,” “upward,” and “downward,” as well as any other similar directional terms, refer to those directions determined with reference to a user (i.e., a rider) in a user reference position (e.g., on a saddle or seat) on the human-powered vehicle 10 facing the handlebars.

[0028] The human-powered vehicle 10 includes a crank 12 to which a human-powered driving force is input. The human-powered vehicle 10 further includes wheels 14 and a vehicle body 16. The wheels 14 of the human-powered vehicle 10 include a front wheel 14A and a rear wheel 14B. The vehicle body 16 includes a frame 18. The crank 12 includes a crank shaft 12A that is rotatable relative to the frame 18, and a pair of crank arms 12B that are respectively provided at axial ends of the crank shaft 12A. A pair of pedals 20 are respectively connected to each crank arm 12B. The rear wheel 14B is driven by the rotation of the crank 12. The rear wheel 14B is supported by the frame 18. The crank 12 is connected to the rear wheel 14B by a drive mechanism 22.

[0029] The drive mechanism 22 includes a first rotor 24 connected to the crankshaft 12A. The crankshaft 12A may be connected to the first rotor 24 so as to rotate integrally with the crankshaft 12A, or may be connected via a first one-way clutch. The first one-way clutch is configured to rotate the first rotor 24 forward when the crank 12 rotates forward, and to allow relative rotation between the crank 12 and the first rotor 24 when the crank 12 rotates backward. The first rotor 24 includes a sprocket, a pulley, or a bevel gear.

[0030] The drive mechanism 22 further includes a second rotating body 26 and a connecting member 28. The second rotating body 26 is connected to the rear wheel 14B. The second rotating body 26 includes a sprocket, a pulley, or a bevel gear. The connecting member 28 transmits the rotational force of the first rotating body 24 to the second rotating body 26. The connecting member 28 includes, for example, a chain, a belt, or a shaft. A second one-way clutch is preferably provided between the second rotating body 26 and the rear wheel 14B. The second one-way clutch is configured to rotate the rear wheel 14B forward when the second rotating body 26 rotates forward, and to allow relative rotation between the second rotating body 26 and the rear wheel 14B when the second rotating body 26 rotates backward. In the following embodiment, the first rotating body 24 is described as a sprocket, the second rotating body 26 is described as a sprocket, and the connecting member 28 is described as a chain.

[0031] A front wheel 14A is attached to the frame 18 via a front fork 30. A handlebar 32 is connected to the front fork 30 via a stem 34. In this embodiment, the rear wheel 14B is connected to the crank 12 by the drive mechanism 22, but at least one of the front wheel 14A and the rear wheel 14B may be connected to the crank 12 by the drive mechanism 22.

[0032] The human-powered vehicle 10 has a gear change system. The gear change system includes an operating device and a gear change device operated by the operating device. The gear change device 36 changes a gear change ratio R, which is a ratio of the rotational speed of the drive wheel to the rotational speed C of the crankshaft 12A of the human-powered vehicle. The gear change ratio R is a ratio of the rotational speed W of the drive wheel to the rotational speed C of the crank 12. In this embodiment, the drive wheel is the rear wheel 14B. The gear change device includes at least one of, for example, a front derailleur, a rear derailleur, and an internal gear changer. The internal gear changer is provided, for example, on the hub of the rear wheel 14B.

[0033] The human-powered vehicle 10 includes a driving device 38 that assists the human-powered driving force. The driving device 38 is, for example, a motor. The motor 40 assists the propulsion of the human-powered vehicle 10. The motor 40 provides a propulsive force to the human-powered vehicle 10. The motor 40 includes one or more electric motors. The motor 40 is configured to transmit rotation to a power transmission path of the human-powered driving force H from the pedal 20 to the rear wheel 14B and at least one of the front wheels 14A. The power transmission path of the human-powered driving force H from the pedal 20 to the rear wheel 14B includes the rear wheel 14B. In this embodiment, the motor 40 is provided on the frame 18 of the human-powered vehicle 10 and configured to transmit rotation to the first rotating body 24. The motor 40 is provided in a housing. The housing is provided in the frame 18. The housing is detachably attached to the frame 18, for example. A drive unit is configured including the motor 40 and the housing in which the motor 40 is provided. A third one-way clutch is preferably provided in the power transmission path between the motor 40 and the crankshaft 12A so that when the crankshaft 12A is rotated in the direction in which the human-powered vehicle 10 moves forward, the rotational force of the crank 12 is not transmitted to the motor 40. When the motor 40 is provided on at least one of the front wheel 14A and the rear wheel 14B, the motor 40 may include a hub motor.

[0034] The human-powered vehicle 10 is equipped with a brake device 42. The brake device 42 includes a front brake device 42A and a rear brake device 42B. The human-powered vehicle 10 is equipped with a front brake disc 44A, a front brake hose 46A, and a front brake lever 48A. The front brake device 42A is a hydraulic brake device. In one example, the front brake device 42A is provided on the rear surface of the lower part of the front fork 30. The front brake device 42A may also be provided on the front surface of the lower part of the front fork 30. The front brake device 42A is connected to the front brake lever 48A via the front brake hose 46A. The front brake hose 46A is filled with brake oil.

[0035] When a front brake lever 48A is operated, an internal piston of the front braking device 42A is hydraulically operated to press a brake pad against a front brake disc 44A, thereby braking the rotation of the front wheel 14A.

[0036] The human-powered vehicle 10 includes a rear brake disc 44B, a rear brake hose 46B, and a rear brake lever 48B. The rear brake device 42B is a hydraulic brake device. In one example, the rear brake device 42B is provided on the upper surface of the rear portion of the seat stay 50. The rear brake device 42B may also be provided on the upper surface of the rear portion of the chain stay 52. ​​The rear brake device 42B is connected to the rear brake lever 48B via the rear brake hose 46B. The rear brake hose 46B is filled with brake oil.

[0037] When a rear brake lever 48B is operated, an internal piston of the rear braking device 42B is hydraulically operated to press a brake pad against a rear brake disc 44B, thereby braking the rotation of the rear wheel 14B.

[0038] The human-powered vehicle 10 includes an ABS (Anti-lock Braking System) control device. A wheel speed sensor that detects the rotation speed of the front wheel 14A and a wheel speed sensor that detects the rotation speed of the rear wheel 14B are connected to the ABS control device. The ABS control device reduces the braking force of the front brake device 42A based on the rotation speed of the front wheel 14A detected by the wheel speed sensor, thereby preventing the front wheel 14A from locking. In one example, when the wheel speed sensor detects that the difference between the rotation speed of the front wheel 14A and the rotation speed of the rear wheel 14B is equal to or greater than the threshold value in a state in which the operating force on the front brake lever 48 exceeds a threshold value, the ABS control device reduces the braking force of the front brake device 42A. When the wheel speed sensor detects that the reduction in the rotation speed of the front wheel 14A is equal to or greater than the threshold value, the ABS control device may reduce the braking force of the front brake device 42A.

[0039] The wheel speed sensor includes a sensor mount fixed to the brake device 42 of the human-powered vehicle 10, and a sensor that is fixed so as to be positionably adjustable relative to the sensor mount and detects the rotational speed of the wheels 14 of the human-powered vehicle. In one example, as shown in FIG. 2, the wheel speed sensor 54 is attached to the front brake device 42A. The wheel speed sensor 54 attached to the front brake device 42A will be described below. The wheel speed sensor 54 may also be attached to the rear brake device 42B. The sensor mount 56 is fixed to the front brake device 42A. A cover 60 is attached to the front brake device 42A.

[0040] The sensor 58 is fixed to the sensor mount 56 so as to be movable in a direction parallel to the axial direction of the hub axle of the wheel 14. In one example, the sensor 58 is fixed to the sensor mount 56 so as to be movable in a direction A2 parallel to the axial direction A1 of the hub axle of the front wheel 14A. Specifically, the sensor mount 56 has a through hole 62 penetrating in a direction parallel to the axial direction A1. The sensor 58 is inserted into the through hole 62 and fixed. The sensor 58 is fixed to the front brake disc 44A with a predetermined gap therebetween.

[0041] The front brake disc 44A includes a sensor ring 64. The sensor ring 64 may be provided separately from the front brake disc 44A as long as it rotates integrally with the front wheel 14A. The sensor ring 64 has a detection hole 66 for detecting speed. A plurality of detection holes 66 are provided around the entire circumference of the sensor ring 64. The sensor 58 is provided such that one end face in a direction parallel to the axial direction A1 faces the sensor ring 64.

[0042] The sensor 58 has a permanent magnet and a coil therein. The sensor 58 detects the rotation speed of the front wheel 14A by detecting the rotation speed of a sensor ring 64 that rotates integrally with the front wheel 14A. Specifically, the sensor 58 generates magnetic lines of force using a permanent magnet. The magnetic flux density of the magnetic lines changes periodically every time the detection hole 66 passes in front of the sensor 58 due to the rotation of the sensor ring 64. An AC signal having a frequency corresponding to the period of the change in magnetic flux density flows through the coil of the sensor 58. The frequency of the AC signal is proportional to the rotation speed of the sensor ring 64. The sensor 58 outputs the AC signal flowing through the coil to the ABS control device as a signal indicating the rotation speed of the front wheel 14A.

[0043] If the sensor 58 is not spaced apart from the sensor ring 64 at a predetermined distance due to variations in the shapes of the various components, the accuracy of detecting the rotation speed of the front wheel 14A decreases. Therefore, the sensor 58 is moved in a direction A2 parallel to the axial direction A1 to adjust the distance between the sensor 58 and the sensor ring 64 to a predetermined distance.

[0044] The brake device 42 is fixed to the body 16 of the human-powered vehicle 10 by a brake fixing member, and the sensor mount 56 is fixed to the brake device 42 by the brake fixing member. In one example, as shown in Fig. 3, the front brake device 42A and the sensor mount 56 are fixed to the front fork 30 by a brake fixing member 68. The brake fixing member 68 is a bolt having a male thread portion that screws into a female thread portion provided on the front fork 30.

[0045] 4, the sensor 58 is adjustable within a predetermined range D1 that is predetermined relative to the sensor mount. The wheel speed sensor 54 has a restriction mechanism 70 between the sensor 58 and the sensor mount 56 that restricts the sensor 58 from moving beyond the predetermined range D1 that is predetermined relative to the sensor mount 56. Specifically, the wheel speed sensor 54 further has a sensor fixing member 72 that fixes the sensor 58 to the sensor mount 56. The sensor fixing member 72 is a bolt having a male thread portion.

[0046] The sensor 58 has an elongated hole 74 whose longitudinal direction is parallel to the axial direction A1, and is fixed to the sensor mount 56 by a sensor fixing member 72 inserted into the elongated hole 74. In Figure 4, the cover 60 has been removed from the front braking device 42A so that the shape of the elongated hole 74 can be seen.

[0047] At least one of the sensor mount 56 and the sensor 58 has a female thread that screws into the male thread of the sensor fixing member 72. The sensor 58 is fixed to the sensor mount 56 by the sensor fixing member 72 inserted into the elongated hole 74. The position of the sensor 58 can be adjusted within a predetermined range D1 with respect to the sensor mount 56 by releasing the screw engagement of the sensor fixing member 72. Thus, in the wheel speed sensor 54, the walls at both ends of the elongated hole 74 in the direction parallel to the axial direction A1 and the screw head of the sensor fixing member 72 form the restriction mechanism 70.

[0048] When the wheel speed sensor 54 is attached to the front fork 30, first, the sensor mount 56 is fixed to the front braking device 42A by the brake fixing member 68. Next, the sensor 58 is inserted into the through hole 62 of the sensor mount 56. The sensor 58 is inserted from the side of the through hole 62 opposite to the side facing the sensor ring 64. Thereafter, the sensor 58 is aligned so that the distance between the sensor 58 and the sensor ring 64 is a predetermined distance, and then the sensor fixing member 72 is inserted into the elongated hole of the sensor mount 56 and fixed to the sensor mount 56 by the sensor fixing member 72.

[0049] As shown in Fig. 5, a jig 76 for a wheel speed sensor is used to position the sensor 58. The jig 76 has an insertion portion 78 that is inserted between the wheel speed sensor 54 and the sensor ring 64, which rotates integrally with the wheels 14 of the human-powered vehicle 10, and determines the distance between the wheel speed sensor 54, whose position relative to the sensor ring 64 is adjustable, and the sensor ring 64. The jig 76 is provided such that, when the insertion portion 78 is inserted between the sensor ring 64 and the wheel speed sensor 54, the insertion portion 78 at least partially overlaps with the detection hole 66 of the sensor ring 64 when viewed from a direction parallel to the axial direction A1. The sensor 58 is fixed to the sensor mount 56 by the sensor fixing member 72 at a position where the end face of the sensor 58 facing the sensor ring 64 abuts against the insertion portion 78 of the jig 76.

[0050] 6, the jig 76 further has a slit 80 in which the sensor ring 64 is disposed when the insertion portion 78 is inserted between the sensor ring 64 and the wheel speed sensor 54. The slit 80 has a width equal to the thickness of the sensor ring 64. This prevents the jig 76 from shifting in the axial direction A1 when the insertion portion 78 is inserted between the sensor ring 64 and the wheel speed sensor 54.

[0051] The jig 76 has a first axial length in a direction parallel to the axial direction of the hub axle of the wheel 14, and the insert portion 78 has a second axial length in a direction parallel to the axial direction, the first axial length being greater than twice the second axial length. In one example, as shown in FIG. 6, the jig 76 has a first axial length L1 in a direction parallel to the axial direction A1, and the insert portion 78 has a second axial length L2 in a direction parallel to the axial direction A1. The second axial length L2 is equal to a predetermined interval between the sensor 58 and the sensor ring 64. Since the first axial length L1 is greater than twice the second axial length L2, the gripping property of the jig 76 is improved.

[0052] The jig 76 has an uneven portion including at least one of a concave portion and a convex portion on its outer surface. The uneven portion acts as a slip prevention member when the jig 76 is held. In one example, as shown in FIG. 7, the uneven portion is a jig through hole 82 extending in a direction parallel to the axial direction A1. This allows the jig 76 to be prevented from slipping when held, despite its simple configuration.

[0053] Next, the wheel speed sensors 54A to 54D of the first to fourth modified examples will be described. As shown in FIG. 8, the wheel speed sensor 54A of the first modified example has a sensor mount 56A. The through hole of the sensor mount 56A has a first opening 84A on the side facing the sensor ring 64 and a second opening 86A on the side opposite to the side facing the sensor ring 64. The area of ​​the first opening 84A is larger than the area of ​​the second opening 86A. The sensor 58A is inserted into the through hole from the first opening 84A and fixed. The sensor 58A has a female threaded portion. The sensor fixing member 72A is, for example, a bolt having a male threaded portion. The sensor 58A is fixed to the sensor mount 56A by the screw head of the sensor fixing member 72A inserted from the elongated hole 74A of the sensor mount 56A engaging with the edge of the elongated hole 74A and the male threaded portion of the sensor fixing member 72A screwing into the female threaded portion of the sensor 58. According to the wheel speed sensor 54A of the first modification, even if the sensor fixing member 72A falls off, the sensor 58A can be prevented from falling off to the side opposite to the side facing the sensor ring 64 in the sensor mount 56A.

[0054] As shown in FIG. 9, the wheel speed sensor 54B of the second modified example has a sensor mount 56B. The through hole of the sensor mount 56B has a first opening 84B on the side facing the sensor ring 64 and a second opening 86B on the side opposite to the side facing the sensor ring 64. The area of ​​the first opening 84B is larger than the area of ​​the second opening 86B. The sensor 58B is inserted and fixed from the first opening 84B. The sensor mount 56B has an insertion hole that reaches from the outer circumferential surface to the through hole. The insertion hole has a female thread portion on the inner circumferential surface. A sensor fixing member 72B having a male thread portion is inserted into the insertion hole. The sensor 58B is fixed to the sensor mount 56B by pressing an end of the sensor fixing member 72B inserted into the insertion hole against the outer circumferential surface of the sensor 58B. According to the wheel speed sensor 54B of the second modification, even if the sensor fixing member 72B falls off, the sensor 58B can be prevented from falling off to the side opposite to the side facing the sensor ring 64 in the sensor mount 56B.

[0055] As shown in FIG. 10, the wheel speed sensor 54C of the third modified example has a sensor mount 56C. The through hole of the sensor mount 56C has a first opening 84C on the side facing the sensor ring 64 and a second opening 86C on the side opposite to the side facing the sensor ring 64. The area of ​​the first opening 84C is larger than the area of ​​the second opening 86C. The sensor 58B is inserted and fixed from the first opening 84B. The sensor mount 56C has an insertion hole that reaches from the outer circumferential surface to the through hole. A sensor fixing member 72C having a male thread portion is inserted into the insertion hole. The sensor 58C has a plurality of fixing holes 88 on the outer circumferential surface. Each fixing hole 88 has a female thread portion on the inner circumferential surface. The sensor 58C is fixed to the sensor mount 56C by screwing the male thread portion of the sensor fixing member 72C inserted into the insertion hole into the female thread portion of the fixing hole 88. The position of the sensor 58C in the direction parallel to the axial direction A1 can be adjusted by changing the fixing hole 88 into which the sensor fixing member 72C is inserted. According to the wheel speed sensor 54C of the third modified example, even if the sensor fixing member 72C falls off, the sensor 58C can be prevented from falling off to the side opposite to the side facing the sensor ring 64 of the sensor mount 56C.

[0056] As shown in FIG. 11, the wheel speed sensor 54D of the fourth modified example has a sensor mount 56D. The through hole of the sensor mount 56 has a first opening 84D on the side facing the sensor ring 64 and a second opening 86D on the side opposite to the side facing the sensor ring 64, and the area of ​​the first opening 84D is equal to the area of ​​the second opening 86D. The area of ​​the sensor 58D on the side facing the sensor ring 64 is larger than the area of ​​the first opening 84D on the side facing the sensor ring 64 in the sensor mount 56. The sensor 58D is inserted from the first opening 84D into the through hole and fixed. The sensor mount 56D has an insertion hole that reaches from the outer circumferential surface to the through hole. A sensor fixing member 72D having a male screw portion is inserted into the insertion hole. The sensor 58D has a plurality of fixing holes 90 on the outer circumferential surface. Each fixing hole 90 has a female screw portion on the inner circumferential surface. The sensor 58D is fixed to the sensor mount 56D by screwing the male threaded portion of the sensor fixing member 72C inserted into the insertion hole into the female threaded portion of the fixing hole 90. The position of the sensor 58D in the direction parallel to the axial direction A1 can be adjusted by changing the fixing hole 90 into which the sensor fixing member 72D is inserted. According to the wheel speed sensor 54D of the fourth modification, even if the sensor fixing member 72D falls off, the sensor 58D can be prevented from falling off to the side opposite to the side facing the sensor ring 64 of the sensor mount 56D.

[0057] Although the embodiment of the present invention has been described above, the embodiment is not limited to the contents of this embodiment. The above-mentioned components include those that a person skilled in the art can easily imagine, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the above-mentioned components can be appropriately combined. Furthermore, various omissions, substitutions, or modifications of the components can be made without departing from the gist of the above-mentioned embodiment.

[0058] The term "at least one" as used herein means "one or more" of the desired options. As an example, the term "at least one" as used herein means "only one option" or "both of two options" if the number of options is two. As another example, the term "at least one" as used herein means "only one option" or "any combination of two or more options" if the number of options is three or more. [Explanation of symbols]

[0059] 10... human-powered vehicle, 30... front fork, 42... brake device, 42A... front brake device, 44A... front brake disc, 64... sensor ring, 66... ​​detection hole, 54, 54A, 54B, 54C, 54D... wheel speed sensor, 56... sensor mount, 58... sensor, 62... through hole, 68... brake fixing member, 70... restriction mechanism, 72, 72A, 72B, 72C, 72D... sensor fixing member, 74, 74A... long hole, 76... jig, 78... insertion portion, 80... slit, 82... jig through hole, 84A, 84B, 84C, 84D... first opening, 86A, 86B, 86C, 86D... second opening, A1... axial direction

Claims

1. a sensor mount fixed to a brake device of a human-powered vehicle; a sensor that is fixed to the sensor mount so as to be positionably adjustable, and detects a rotation speed of a wheel of the human-powered vehicle; The wheel speed sensor, wherein the brake device is fixed to a body of the human-powered vehicle by a brake fixing member, and the sensor mount is fixed to the brake device by the brake fixing member.

2. The wheel speed sensor according to claim 1 , wherein the sensor is fixed to the sensor mount so as to be movable in a direction parallel to an axial direction of a hub axle of the wheel.

3. the sensor mount has a through hole extending in a direction parallel to the axial direction, The wheel speed sensor according to claim 2 , wherein the sensor is inserted into the through hole and fixed thereto.

4. 4. The wheel speed sensor according to claim 2, further comprising a sensor fixing member for fixing the sensor to the sensor mount.

5. 5. The wheel speed sensor according to claim 4, wherein the sensor has an elongated hole whose longitudinal direction is parallel to the axial direction, and the sensor is fixed to the sensor mount by the sensor fixing member inserted into the elongated hole.

6. 6. The wheel speed sensor according to claim 4, wherein the sensor fixing member is a bolt having a male thread portion.

7. 7. The wheel speed sensor according to claim 6, wherein at least one of the sensor mount and the sensor has a female thread portion that screws into a male thread portion of the sensor fixing member.

8. 8. A wheel speed sensor as claimed in claim 1, wherein the sensor is adjustable within a predetermined range relative to the sensor mount.

9. 9. The wheel speed sensor according to claim 8, further comprising a restriction mechanism between the sensor and the sensor mount, the restriction mechanism restricting movement of the sensor relative to the sensor mount beyond a predetermined range.

10. a sensor mount fixed to a brake device of a human-powered vehicle; a sensor that is fixed to the sensor mount so as to be positionably adjustable, and detects a rotation speed of a wheel of the human-powered vehicle; the sensor is fixed to the sensor mount so as to be movable in a direction parallel to an axial direction of a hub axle of the wheel; the sensor mount has a through hole extending in a direction parallel to the axial direction, The sensor is inserted into the through hole and fixed thereto, the through hole has a first opening on a side facing a sensor ring and a second opening on a side opposite to the side facing the sensor ring, the area of ​​the first opening being larger than the area of ​​the second opening; The sensor is a wheel speed sensor that is inserted into the through hole from the first opening and fixed thereto.

11. a sensor mount fixed to a brake device of a human-powered vehicle; a sensor that is fixed to the sensor mount so as to be positionably adjustable, and detects a rotation speed of a wheel of the human-powered vehicle; the sensor is fixed to the sensor mount so as to be movable in a direction parallel to an axial direction of a hub axle of the wheel; the sensor mount has a through hole extending in a direction parallel to the axial direction, The sensor is inserted into the through hole and fixed thereto, the through hole has a first opening on a side facing a sensor ring and a second opening on a side opposite to the side facing the sensor ring, the area of ​​the first opening and the area of ​​the second opening being equal; A wheel speed sensor, wherein the sensor has an area facing the sensor ring that is larger than an area of ​​an opening in the sensor mount that faces the sensor ring, and the sensor is inserted into the through hole from the first opening and fixed.

12. A jig for a wheel speed sensor having an insertion portion that is inserted between a sensor ring that rotates integrally with the wheel of a human-powered vehicle and a wheel speed sensor that is fixed so as to be adjustable in position to a sensor mount that is fixed to a brake device by a brake fixing member that fixes the brake device to the body of the human-powered vehicle, and that defines the distance between the wheel speed sensor, whose position relative to the sensor ring is adjustable, and the sensor ring.

13. The jig for a wheel speed sensor according to claim 12 , further comprising a slit in which the sensor ring is disposed when the insertion portion is inserted between the sensor ring and the wheel speed sensor.

14. 14. A jig for a wheel speed sensor as described in claim 12 or claim 13, wherein the jig has a first axial length in a direction parallel to an axial direction of a hub axle of the wheel, the insertion portion has a second axial length in a direction parallel to the axial direction, and the first axial length is greater than twice the second axial length.

15. 15. A jig for a wheel speed sensor as described in claim 14, wherein the sensor ring has a detection hole for detecting speed, and when the insertion portion is inserted between the sensor ring and the wheel speed sensor, the insertion portion is arranged so that the insertion portion at least partially overlaps with the detection hole when viewed from a direction parallel to the axial direction.

16. 16. The jig for a wheel speed sensor according to claim 14 or 15, wherein the jig has an outer surface having an uneven portion including at least one of a concave portion and a convex portion.

17. The jig for a wheel speed sensor according to claim 16, wherein the non-smooth portion is a jig through hole extending in a direction parallel to the axial direction.

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