JP2021162066A - Gear shift detection device in saddle-riding type vehicle - Google Patents

Abstract

To enable gear shift detection with an inexpensive configuration in a saddle-riding type vehicle mounted with a transmission device which includes a shift rod driven in response to operation of a shift pedal and a shift drum rotated by power transmitted from the shift rod.SOLUTION: Determination means 62 determines a change in shift position on the basis of a detection result of a switch 58 that detects operation of a shift rod 27 in response to operation of a shift pedal 26 and a detection result of a drum angle sensor 41 that detects a rotation direction of a shift drum 28.SELECTED DRAWING: Figure 6

Description

The present invention particularly relates to a saddle-riding vehicle equipped with a transmission equipped with a shift rod driven in response to an operation of a shift pedal and a shift drum rotated by power transmitted from the shift rod. Regarding the improvement of the detection device.

A shift rod device for motorcycles that detects shifts using a stroke sensor that non-contactly detects the amount of movement of magnets that move when the shift rod operates, and controls the engine during shifts based on the detection results. However, it is known in Patent Document 1.

Japanese Patent No. 6107621

In the one disclosed in Patent Document 1, the stroke sensor is an expensive Hall element, and there is a demand for cost reduction.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a shift detection device in a saddle-riding vehicle capable of performing shift detection with an inexpensive configuration.

In order to achieve the above object, the present invention is equipped with a transmission device including a shift rod driven in response to an operation of a shift pedal and a shift drum rotated by power transmitted from the shift rod. In a saddle-riding vehicle, a switch that detects the operation of the shift rod in response to an operation of the shift pedal, a drum angle sensor that detects the rotation direction of the shift drum, and detection results of the switch and the drum angle sensor. The first feature is to provide a determination means for determining a change in the shift position based on the above.

Further, in the present invention, in addition to the configuration of the first feature, the shift rod has a member to be detected that operates in response to the operation of the shift pedal, and the member to be detected has a shift-up side and a shift-down side. The second feature is that a detected portion that can be detected by the single switch is formed by the operation to any side of the above.

In the present invention, in addition to the configuration of the second feature, the detected portion has a shift-up side inclined surface detected by the switch at the time of upshifting and a downshifting side inclined surface detected by the switch at the time of downshifting. A third feature is that the detector of the switch is arranged in the detected portion, and is formed as a recess having the above.

The fourth feature of the present invention is that, in addition to any of the configurations of the first to third features, the switch is attached to the shift rod extending in the vertical direction in either the front-rear direction of the vehicle. ..

The fifth feature of the present invention is that, in addition to the configuration of the fourth feature, the switch is attached to the shift rod toward the rear in the front-rear direction of the vehicle.

Further, in the present invention, in addition to the configuration of the third feature, the detected object is detected along a direction in which the shift-up side inclined surface and the shift-down side inclined surface intersect obliquely with respect to the operating direction of the detected member. A sixth feature is that the operating direction of the detector formed on the member and held by the switch is set in a direction orthogonal to the operating direction of the detected member.

According to the first feature of the present invention, shift detection can be performed by using a switch and a drum angle sensor, shift detection is performed with an inexpensive configuration without using an expensive Hall element, and the detection result is obtained. It is possible to reduce the cost by controlling the engine at the time of shifting based on the above.

Further, according to the second feature of the present invention, the operation of the detected member included in the shift rod shifts up and down by detecting the detected portion formed on the detected member with the single switch. All of these can be detected, and the number of assembly man-hours and the number of parts can be reduced.

According to the third feature of the present invention, the detected portion is a recess having an inclined surface on the upshift side and an inclined surface on the downshift side, and shifts with a simple configuration in which the detected portion is detected by a switch. Both up and down can be detected, and the upshift and downshift detection areas can be easily adjusted by changing the shape of the recess.

According to the fourth feature of the present invention, since the switch is attached to the shift rod facing either the front-rear direction of the vehicle, the switch is prevented from being arranged toward the occupant riding in the saddle-type vehicle. It can be less likely to get in the way of the occupants.

According to the fifth feature of the present invention, since the switch is attached to the shift rod facing the rear in the front-rear direction of the vehicle, the switch can be protected by the shift rod from the influence of an external force from the front.

Further, according to the sixth feature of the present invention, the detector of the switch operates in the direction orthogonal to the operating direction of the detected member, so that the shift along the direction diagonally intersecting the operating direction of the detected member. Up-side inclined surface and down-shift side inclined surface can be reliably detected by a single switch detector, enabling an efficient layout in which both upshift and downshift can be detected by a single switch. It becomes.

It is a left side view of a motorcycle. It is an enlarged view of the main part of FIG. It is sectional drawing which follows the 3-3 line of FIG. It is a figure which shows the upper vertical section of the shift rod at the time of non-operation (a), shift-up operation (b) and shift-down operation (c) of the shift pedal, respectively. It is a vertical cross-sectional view which shows the relative position change of a switch and a concave part at the time of non-operation (a), shift-up operation (b) and shift-down operation (c) of a shift pedal. It is a block diagram which shows the structure for performing a shift detection.

Embodiments of the present invention will be described with reference to FIGS. 1 to 6 attached. In the following explanation, front and rear, left and right, and up and down shall refer to the directions seen by the occupants riding the motorcycle.

First, in FIG. 1, the head pipe 11 provided on the front end of the body frame F of a motorcycle, which is a saddle-riding vehicle, is connected to the front fork 12 and the front fork 12 which pivotally support the front wheel WF at the lower end. The steering handle 13 is supported so as to be steerable. The vehicle body frame F includes a main frame 14 extending rearward from the head pipe 11 and a pair of left and right pivot frames 15 extending downward from the rear end portion of the main frame 14, and the rear wheel WR is at the rear end. The front end portion of the swing arm 16 pivotally supported by the portion is swingably supported by the pivot frame 15 via the pivot shaft 17.

An engine body 18 of a water-cooled 4-cycle engine E is suspended and mounted on the vehicle body frame F between the front wheel WF and the pivot frame 15, and the power output from the engine E is inside the swing arm 16. It is transmitted to the rear wheel WR via a drive shaft (not shown) passing through. Further, the main frame 14 supports a fuel tank 19 arranged above the engine E, and a passenger seat 20 arranged behind the fuel tank 19 is provided on the rear portion of the vehicle body frame F. Be done.

With reference to FIG. 2, a side stand bracket 21 is fixed to the lower end of the pivot frame 15 on the left side of the vehicle body frame F, and the side stand 22 is pivotally attached to the side stand bracket 21 in an undulating manner. Further, a support bracket 23 projecting rearward from the pivot frame 15 is fixed to the pivot frame 15 behind the pivot shaft 17, and the step 24 on which the occupant's feet are placed can be folded while allowing lateral protrusion. It is provided on the support bracket 23.

A pedal support portion 25 extending forward is integrally provided at the lower end portion of the pivot frame 15 on the left side, and the pedal support portion 25 is a shift pedal that can be rotated by the toes of the left foot mounted on the step 24. 26 is rotatably supported. The shift pedal 26 includes an arm portion 26a extending in the front-rear direction, a supported portion 26b provided at the tip end portion of the arm portion 26a, and a pedal portion 26c provided at the rear end portion of the arm portion 26a. The supported portion 26b is rotatably supported by the tip end portion of the pedal support portion 25.

With reference to FIG. 3, the motorcycle includes a shift rod 27 driven by the operation of the shift pedal 26 and a shift drum 28 rotated by the power transmitted from the shift rod 27. The transmission 30 is mounted.

A gear shifting mechanism 29 having a plurality of gears is housed in the upper rear portion of the crankcase 31 which forms a part of the engine body 18, and the shift drum 28 which constitutes a part of the gear shifting mechanism 29. Both ends in the axial direction are rotatably supported by the left side wall 31L and the right side wall 31R of the crankcase 31. A plurality of lead grooves 34 for individually engaging the plurality of shift forks 33 are formed on the outer periphery of the shift drum 28. Further, a shift fork shaft 32 having an axis parallel to the shift drum 28 is provided between the left side wall 31L and the right side wall 31R, and a plurality of shift forks 33 slidably supported by the shift fork shaft 32 have. The engagement pin 33a is engaged with the lead groove 34, and the shift fork 33 selected from the plurality of shift forks 33 operates in response to the rotation of the shift drum 28, whereby the gear transmission mechanism 29 The gear train selected from the multi-stage gear trains provided by the gear train is established.

The shift rod 27 is arranged so as to extend in the vertical direction in front of the pivot frame 15, and the lower end portion of the shift rod 27 is located below the supported portion 26b of the arm portion 26a of the shift pedal 26. It is rotatably connected to the arm portion 26a via the provided connecting portion 35. Further, the rear end portion of the shift arm 37 extending in the front-rear direction of the vehicle is rotatably connected to the upper end portion of the shift rod 27. On the other hand, a shift spindle 38 having an axis parallel to the axis of the shift fork shaft 32 and the shift drum 28 rotates on the left side wall 31L and the right side wall 31R of the crankcase 31 in front of the shift rod 27. It is movably supported, and the front end portion of the shift arm 37 is fixed to the protruding end portion of the shift spindle 38 from the left side wall 31L.

On the other hand, a ratchet arm 39 is fixed to the protruding end portion of the shift spindle 38 from the right end wall 31R, and the shift spindle 38 is located between the ratchet arm 39 and the right end portion of the shift drum 28. A shift drum drive mechanism 40 that intermittently rotates the shift drum 28 by transmitting power from the ratchet arm 39 that rotates together with the ratchet arm 39 is provided.

The rotation direction of the shift drum 28 is detected by the drum angle sensor 41, and the drum angle sensor 41 is coaxial with the shift drum 28 and fastened to the left side wall 31L of the crankcase 31 with a bolt 43. The connecting shaft portion 28a having a rectangular cross section integrally held at the left end portion in the axial direction of the shift drum 28 is fitted and connected to the rotating member 42 of the drum angle sensor 41. As a result, the rotating member 42 rotates together with the shift drum 28, whereby the rotation direction of the shift drum 28 is detected by the drum angle sensor 41.

The shift rod 27 includes an adjuster 44 connected to the shift pedal 26 via the connecting portion 35, and a shift rod body 45 connected to the shift arm 37.

In FIG. 4, the shift rod body 45 has a hollow tubular shape in which a lower body 46 and an upper body 47 are connected to each other, and the shift rod body 45 has an upper portion of the adjuster 44. The piston 48 constituting the body 46 movably penetrates the lower end portion of the lower body 46 and is fitted from below, and a boot 49 is provided between the body 46 and the piston 48. Further, an operating rod 50 as a member to be detected that can reciprocate in the shift rod body 45 within a limited range is coaxially connected to the upper part of the piston 48 so as not to be relatively movable in the axial direction by screwing or the like. The operating rod 50 operates in the axial direction together with the piston 48 in response to the operation of the shift pedal 26.

A coil spring 51 is interposed between the piston 48, the operating rod 50, and the shift rod body 45. A pair of bottomed cylindrical retainers 52, 53 are slidably housed in the shift rod body 45 with the open ends of the retainers 52, 53 facing each other, and the coil spring 51. Is reduced between the retainers 52 and 53 while exerting a spring force that separates the retainers 52 and 53 from each other.

Moreover, an annular contact surface 54 that can be brought into contact with the retainer 52 from the side opposite to the coil spring 51 is formed at the upper end of the piston 48, and the operating rod 50 has the coil spring 53 with the coil spring. A collar portion 55 that can be contacted from the side opposite to the 51 is integrally provided.

Further, the body 46, 47 of the shift rod body 45 comes into contact with the retainers 52, 53 from the side opposite to the coil spring 51, and the annular regulation surface 56, which regulates the moving ends of the retainers 52, 53, 57 is formed.

Thus, in the non-operated state of the shift pedal 26, the retainers 52 and 53 urged by the elastic force of the coil spring 51 are in a state of being separated from each other and in contact with the regulating surfaces 56 and 57, respectively. The lower retainer 52 rises while compressing the coil spring 51 at the contact surface 54 of the piston 48 in the adjuster 44 that rises when the shift pedal 26 is operated to the shift-up side, and the shift-up operation is stopped. Occasionally, the elastic force of the compressed coil spring 51 returns the retainer 52 to its original position in contact with the regulation surface 56. Further, when the shift pedal 26 is operated to the downshift side, the upper retainer 53 is lowered while compressing the coil spring 51 at the flange portion 55 of the operating rod 50 which is lowered together with the piston 48 of the adjuster 44, and the downshift operation is performed. When stopped, the retainer 53 returns to its original position in contact with the regulation surface 57 due to the elastic force of the compressed coil spring 51.

By the way, the operation of the shift rod 27 in response to the operation of the shift pedal 26 is detected by a single switch 58 fastened to the body 47 of the shift rod body 45 with a plurality of bolts 61. As shown in 5, the detected portion 60 that can be detected by the switch 58 can be detected by the operation of the operating rod 50 to either the upshift side or the downshift side, which is operated in response to the operation of the shift pedal 26. It is formed on the operating rod 50.

With reference to FIG. 5, the detected unit 60 has an upshift side inclined surface 60a detected by the switch 58 at the time of upshifting and a downshift side inclined surface 60b detected by the switch 58 at the time of downshifting. A recess having a and, in this embodiment, is formed as a V-shaped recess. The shift-up side inclined surface 60a and the shift-down side inclined surface 60b are formed on the operating rod 50 so as to intersect the operating direction of the operating rod 50 at an angle, and the detector 59 of the switch 58 is formed. , Is arranged in the detected portion 60.

That is, in the non-operated state of the shift pedal 26, as shown in FIG. 5A, the detector 59 is in a neutral position where it does not abut on either the upshift side inclined surface 60a or the downshift side inclined surface 60b. Further, during the shift-up operation of the shift pedal 26, as shown in FIG. 5B, the detector 59 abuts on the shift-up side inclined surface 60a and is pushed in as the operating rod 50 rises. The switch 58 detects that the shift pedal 26 has been shifted up. Further, during the downshift operation of the shift pedal 26, as shown in FIG. 5C, the detector 59 abuts on the downshift side inclined surface 60b and is pushed in as the operating rod 50 descends. The switch 58 detects that the shift pedal 26 has been downshifted.

By the way, the switch 58 is attached to the shift rod 27 toward the rear in the front-rear direction of the vehicle while setting the operating direction of the detector 59 in a direction orthogonal to the operating direction of the operating rod 50. The switch 58 is attached to the shift rod 27 toward the rear in the front-rear direction of the vehicle.

In FIG. 6, the detection result of the switch 58 that detects the operation of the shift rod 27 in response to the operation of the shift pedal 26 and the detection result of the drum angle sensor 41 that detects the rotation direction of the shift drum 28 are shown. It is input to the determination means 62 which is an ECU, and the determination means 62 determines whether or not there is a shift position operation by the driver based on the detection results of the switch 58 and the drum angle sensor 41.

That is, as shown in Table 1 below, when the drum angle sensor 41 detects that the shift drum 28 has rotated in the shift-up direction when the switch 58 is turned on. When it is determined that the operation has been performed on the upshift side and the drum angle sensor 41 detects that the shift drum 28 has rotated in the downshift direction when the switch 58 is turned on, the downshift side is set. Judge that the operation has been performed.

Next, the operation of this embodiment will be described. The detection result of the switch 58 that detects the operation of the shift rod 27 in response to the operation of the shift pedal 26 and the drum angle sensor 41 that detects the rotation direction of the shift drum 28. Since the determination means 62 determines whether or not the driver has operated the shift position based on the detection result, shift detection can be performed using the switch 58 and the drum angle sensor 41, and an expensive Hall element is used. It is possible to reduce the cost by detecting the shift with an inexpensive configuration without the above and controlling the engine E at the time of shifting based on the detection result.

The shift rod 27 has an actuating rod 50 that operates in response to an operation of the shift pedal 26, and the actuating rod 50 is single when actuated to either the upshift side or the downshift side. Since the detected portion 60 that can be detected by the switch 58 is formed, the assembly man-hours and the number of parts can be reduced.

Further, the detected portion 60 is formed as a recess having a shift-up side inclined surface 60a detected by the switch 58 at the time of upshifting and a downshifting side inclined surface 60b detected by the switch 58 at the time of downshifting. Since the detector 59 of the switch 58 is arranged in the detected portion 60, both shift-up and shift-down can be detected with a simple configuration, and shift-up and shift can be performed by changing the shape of the recess. It is easy to adjust the down detection area.

Further, since the switch 58 is attached to the shift rod 27 extending in the vertical direction in either the front-rear direction of the vehicle, the switch 58 is prevented from being arranged toward the occupant riding the motorcycle. Can be less likely to get in the way.

Further, since the switch 58 is attached to the shift rod 27 toward the rear in the front-rear direction of the vehicle, the switch 58 can be protected by the shift rod 27 from the influence of an external force from the front.

Further, the shift-up side inclined surface 60a and the shift-down side inclined surface 60b are formed on the operating rod 50 along a direction diagonally intersecting the operating direction of the operating rod 50, and the detection included in the switch 58. Since the operating direction of the child 59 is set to be orthogonal to the operating direction of the operating rod 50, the shift-up side inclined surface 60a and the inclined surface 60a on the shift-up side along the direction diagonally intersecting the operating direction of the operating rod 50 and An efficient layout in which the downshift side inclined surface 60b can be reliably detected by the detector 59 of a single switch 58, and both upshift and downshift can be detected by a single switch 58. It will be possible.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various design changes are made without departing from the present invention described in the claims. Is possible.

26 ... Shift pedal 27 ... Shift rod 28 ... Shift drum 30 ... Transmission 41 ... Drum angle sensor 50 ... Actuating rod 58 ... Switch 59 ...・ Detector 60 ・ ・ ・ Detected part 60a ・ ・ ・ Shift-up side inclined surface 60b ・ ・ ・ Shift-down side inclined surface 62 ・ ・ ・ Judgment means

Claims (6)

A transmission (30) including a shift rod (27) driven in response to an operation of the shift pedal (26) and a shift drum (28) rotated by power transmitted from the shift rod (27). In the saddle-riding vehicle to be mounted, the switch (58) for detecting the operation of the shift rod (27) in response to the operation of the shift pedal (26) and the rotation direction of the shift drum (28) are detected. A saddle-riding type including a drum angle sensor (41) and a determination means (62) for determining a change in the shift position based on the detection results of the switch (58) and the drum angle sensor (41). A shift detection device in a vehicle. The shift rod (27) has a detected member (50) that operates in response to an operation of the shift pedal (26), and the detected member (50) has either a shift-up side or a shift-down side. The shift detection device for a saddle-riding vehicle according to claim 1, wherein a detected portion (60) that can be detected by a single switch (58) is formed even when the vehicle is operated to the side. The detected portion (60) has an upshift side inclined surface (60a) detected by the switch (58) at the time of upshifting and a downshift side inclined surface (60b) detected by the switch (58) at the time of downshifting. The speed change in the saddle-riding vehicle according to claim 2, wherein the detector (59) of the switch (58) is arranged in the detected portion (60). Detection device. The saddle-riding vehicle according to any one of claims 1 to 3, wherein the switch (58) is attached to the shift rod (27) extending in the vertical direction in either the front-rear direction of the vehicle. Shift detection device in. The shift detection device for a saddle-riding vehicle according to claim 4, wherein the switch (58) is attached to the shift rod (27) toward the rear in the front-rear direction of the vehicle. The shift-up side inclined surface (60a) and the shift-down side inclined surface (60b) are formed on the detected member (50) along a direction obliquely intersecting with the operating direction of the detected member (50). 3. The third aspect of the present invention is characterized in that the operating direction of the detector (59) included in the switch (58) is set in a direction orthogonal to the operating direction of the detected member (50). A shift detection device for saddle-riding vehicles.

Images