JP3408333B2 - Change equipment for motorcycles, etc. - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a change device for a motorcycle, a three-wheeled vehicle or a four-wheeled buggy. [0002] As a change device for a motorcycle or the like,
Generally, a foot-operated change pedal is provided, and a shift change is performed by raising or lowering the pedal. In order to reduce the burden on the rider, especially during a race, on such a stepped change pedal, the speed change operation shaft is rotated via an actuator such as a hydraulic motor by operating a hand switch. Change devices have also been developed. For example, see JP-A-59-15
No. 9450 and the like. [0004] In the former foot-operated change device, particularly in a race, when the vehicle frequently shifts up and down at the time of cornering, the rider has a high degree of fatigue. There is a tendency for the rider to become more tired even when the driver shifts the gear by shifting his tip under the change pedal and lifting it with his instep. The latter hand switch type has a complicated structure and is not a retrofit change device, so that it cannot be assembled into a conventional foot change device. In addition, since a power source such as hydraulic pressure is always required at the time of a change operation, maintenance costs are high. SUMMARY OF THE INVENTION It is an object of the present invention to enable a change operation to be performed by either a foot operation or a hand switch operation so that an operation means suitable for a traveling place and traveling conditions can be arbitrarily selected. An object of the present invention is to provide a change device for a motorcycle or the like that can be easily assembled to the change device. Means for Solving the Problems The invention according to claim 1 is:
In a change device for a motorcycle or the like in which a change pedal is interlockedly connected to a speed change operation shaft and a shift is changed by raising or lowering the change pedal, a reciprocating rotary motor driven reciprocally by a hand switch is provided. By interlockingly connecting the motor to the cam plate, the cam plate is reciprocally rotatable by driving the motor, and a pin portion is formed on an intermediate lever for automatic transmission integrally mounted on the transmission operation shaft. A change device for a motorcycle or the like, wherein a cam surface for retreating to a position outside the movement locus of the pin portion when not operating and abutting on the pin portion when operating to rotate the intermediate lever is formed. When shifting up by foot operation, the shift operation shaft is turned by turning up or down the pedal, and the shift drum is turned to shift up. In the case of shifting down, contrary to the case of shifting up, by depressing or pulling up the pedal, the speed change operation shaft is turned in the opposite direction to that at the time of shifting up, and the shift drum 3 is also shifted in the opposite direction. It turns and shifts down. In the foot operation, the intermediate lever also rotates integrally with the speed change operation shaft, but the end pin portion of the intermediate lever rotates within a range that does not collide with the cam plate. Therefore, no load is applied from the cam plate side to the speed change operation shaft side, and light operability is maintained. For automatic gear shifting, the motor is reciprocated by a hand switch. Then, the cam plate reciprocates and the intermediate lever reciprocates via the pin portion to shift up or down. 1 to 4 show a case where the present invention is applied to a motorcycle. First, a general structure of a foot-operated change device will be briefly described. In FIG. 4 showing a sectional view of the change device (a sectional view taken along line IV-IV in FIG. 2), a shift drum 3 rotatably supported in a transmission case (crankcase) 1 is provided on the outer periphery thereof (in FIG. (Not shown), and a shift fork (not shown) is engaged with the guide groove, and the rotation of the drum 3 causes the shift fork to move in the axial direction, thereby causing the shift fork on the transmission gear shaft (not shown) to move. The speed change gear is moved to change the speed. At the left end of the shift drum 3 in the axial direction, a cam body 6 having a plurality of drive pins 7 spaced circumferentially is provided.
On the other hand, a cam lever 8 having a forked tip (FIG. 1) is fixed to the speed change operation shaft 9 supported by the transmission case 1, and the forked tip of the cam lever 8 is turned. The movement causes the shift drum 3 to rotate by a predetermined angle by engaging with the drive pin 7. Adjacent to the cam lever 8, the cam lever 8
A return spring 10 is mounted on the speed change operation shaft 9 for maintaining the gear in the inoperative position, and both ends of the return spring 10 extend toward the shift drum shaft side, and as shown in FIG. , 10b clamp the bent portion 8a of the cam lever 8, and the intermediate portion clamps the locking pin 13. Locking pin 1
3 is fixed to the transmission case 1 through an elongated hole of the cam lever 8, and the cam lever 8 is fixed to the pin 13.
Are relatively movable. That is, when the cam lever 8 rotates from the inoperative position in FIG.
The lower end 10b of the cam lever 8 is locked by the locking pin 13, and the upper end 10a is pressed by the bent portion 8a of the cam lever 8 and bends. After the end of the upshift, the spring 10 returns to the inoperative position by the elastic force. As shown in FIG. 4, a base plate 20 is fixed to an end of the transmission operation shaft 9 outside the transmission case, and the change lever 15 is fixed to the base plate 20 by bolts 42. The end of the change lever 15 is pivotally connected via a connecting rod 16 to a lever portion 17a of a rear change pedal 17 as shown in FIG. The change pedal 17 is rotatably supported by a pedal shaft 18, and shifts up by pulling up in the A1 direction and shifts down by pressing down in the B1 direction. The bolt 42 for fixing the change lever 15 is inserted into the long hole 43, so that the position in the rotation direction with respect to the base plate 20 (FIG. 4) can be adjusted. The above-mentioned structure is the same as that of the conventional step-type change device as described above. In the present invention, however, an automatic change mechanism of the following hand-switch type is assembled to such a change device. , So that they can be used together. In FIG. 2, the automatic change mechanism is
Intermediate lever 21 fixed to the side of change lever 15
A cam plate 23 that can be engaged with the tip pin portion 22 of the intermediate lever 21; a driven pulley drum 24 fixed to the cam plate 23;
, Reciprocating motor 31, and drum 2 for both pulleys
It is composed of a pair of wires 25, 26 and the like wound between 4, 32. The driven pulley drum 24 has a pair of left and right annular grooves 30 as shown in FIG.
Is rotatably supported. The bolt support shaft 29 is screwed to the mounting plate 28, and the mounting plate 28 is fixed to the left end boss 1a of the transmission case 1 by a bolt 38. Each of the wires 25, 26 is wound around each of the guide grooves 30, respectively, and as shown in FIG.
a and 26 a are engaged with the engagement holes of the drum 24. The other ends of the two wires 25 and 26 are wound around a pulley drum 32 of a reciprocating motor 31 with a structure similar to that of the drum 24. As the motor 31, a hydraulic servomotor or the like is used.
, And by operating the hand switch 33 once, one reciprocating rotation is performed at the set rotation angle. That is, after once rotating by a predetermined angle in the C1 direction from the non-operation position shown in FIG. 2, it is turned back in the reverse direction (C2 direction) and returns to the non-operation position. A cam hole 34 is formed in the cam plate 23, and the cam hole 34 is an arc-shaped space having an arc-shaped edge 35 a along the movement trajectory S of the tip end 22 of the intermediate lever 21. Part and cam surface 3 for shift-up operation
5 having a triangular space portion. That is, when the cam plate 23 is in the inoperative position shown in FIG.
2 is located, and the pin portion 22 is shifted to the shift-up position P1.
To the shift-down position P2. In this case, of course, the cam surface 35 has retreated outside the moving range of the pin portion 22. When the cam plate 23 rotates to the operating position as shown in FIG. 3, the cam surface 35 comes into contact with the pin portion 22 and pushes the intermediate lever 21 toward the shift-up side (A2 side). In FIG. 2, the intermediate lever 21 is
It is fixed to the change lever 15 so that the position in the rotation direction can be adjusted by a bolt 41 inserted into the arc-shaped long hole 21a. A case where a change operation is performed by foot motion will be described. In FIG. 2, when upshifting, the change pedal 17 is pulled up in the A1 direction. Then, the change lever 15 rotates in the A2 direction via the connecting rod 16, and the transmission operation shaft 9 also rotates in the A2 direction together with the change lever 15, thereby moving the shift drum 3 via the cam lever 8 and the drive pin 7 in FIG. Rotate to the upshift side. After the upshift, when the foot is released from the pedal 17, the shift operating shaft 9, the change lever 15, and the intermediate lever 21 are moved by the restoring force of the return spring 10 as shown in FIG.
Return to the inactive state. To shift down, the change pedal 17 is depressed in the direction B1 in FIG. Then, the change lever 15, via the connecting rod 16,
The intermediate lever 21 and the shift operation shaft 9 move in the direction B2 opposite to the direction of the upshift, and the cam lever 8 in FIG.
The shift drum 3 moves in three directions, and the shift drum 3 also rotates in the opposite direction to shift down. When the foot is released from the pedal 17 after the downshift, the transmission operating shaft 9, the change lever 15, the intermediate lever 21, and the like return to the non-operating state due to the restoring force of the return spring 10. In the foot operation, the intermediate lever 21 shown in FIG. 2 also rotates integrally with the change lever 15 as described above, but the tip end pin portion 22 of the intermediate lever 21 is located in the arc-shaped space of the cam plate 23. Since the rotation is performed within the range, no load is applied to the intermediate lever 21 and the change lever 15 from the cam plate 23. In the case of automatic gear shifting, the hand switch 33 shown in FIG. 2 is operated. Then, first, the driving pulley drum 32 of the motor 31 rotates a predetermined angle in the C1 direction.
As a result, the driven pulley drum 24 also rotates in the C1 direction via the wire 25 as shown in FIG. 3, and the cam plate 23 also rotates in the C1 direction. By this rotation operation, the cam surface 35 comes into contact with the pin portion 22 at the non-operation position P0, and moves the same in the A2 direction to the shift-up operation position P1. This causes the change lever 15 to move to the shift-up operation position in FIG. 3 via the intermediate lever 21. After the change is completed, the motor 31 reverses and rotates in the direction C2, thereby rotating the driven pulley drum 24 in the direction C2 via the wire 26, and moving the cam plate to the inoperative position in FIG. Return to At the same time, the intermediate lever 21, the change lever 15, and the shift operation shaft 9 are also shown in FIG.
The spring 10 returns to the inoperative position. As in this embodiment, a hole 34 whose entire periphery is closed is formed in the cam plate 23, a cam surface 35 is formed on the inner peripheral edge of the hole 34, and a pin trajectory during a stepping operation is formed. Is formed, the rigidity of the cam plate 23 is improved and the cam plate 2
When the third lever 3 and the intermediate lever 21 are mounted, the pin portion 22 is positioned in contact with the arc-shaped edge 35a,
Positioning of the two 23 and 21 can be easily performed. As described above, according to the first aspect of the present invention, (1) a change device capable of shifting by either a foot operation or a hand switch operation is configured. Especially in races, etc., depending on the traveling place and traveling conditions,
It is possible to arbitrarily select an operation means that is easy for the rider to operate, and furthermore, it is possible to reduce the degree of fatigue and improve the speed change operability. (2) An intermediate lever 21 for automatic shifting is externally attached to the change lever 15 of the conventional foot-operated change device, and a reciprocating actuator is connected to the intermediate lever 21 in an interlocked manner, so that a foot-operated type and a hand switch are provided. Since the combination is used with the expression, it can be easily assembled to the conventional foot-operated change device, and the assembly cost is reduced. (3) A reciprocating rotary motor 31 reciprocally driven by a hand switch is provided as an actuator. The reciprocating rotary motor 31 is interlockedly connected to the cam plate 23, and the cam plate 23 is reciprocally driven by the motor 31. Is reciprocally rotatable, and a pin portion 22 is formed on an intermediate lever 21 integrally attached to the speed change operation shaft.
3 has a cam surface 35 that retreats to the outside of the movement locus of the pin portion 22 when not actuated and contacts the pin portion 22 when actuated to rotate the intermediate lever 21.
There is no burden from the drive mechanism of the hand switch 33, and the shifting operation force due to the foot operation does not increase as compared with the conventional foot operation type, and the shifting operation can be performed with the same operating force as before. (4) If the cam plate 23 and the motor 31 are interlockingly connected via the winding transmission mechanism, the motor 31 can be freely arranged at an arbitrary position away from the change lever, and can be assembled to a conventional change device. It becomes even easier. [Other Embodiments] (1) The cam plate 23 shown in FIG. 2 has a cam surface for shift change on only one side, but a cam surface for shift change on the opposite side can also be provided. It is. For example,
As shown in FIG. 5, a shift-down cam surface 36 is formed on the side opposite to the shift-up cam surface 35. When downshifting, the motor 31 is driven to rotate the cam plate 23 in the direction of arrow C2. (2) As shown in FIG. 6, the cam plate 23 can be operated in a shape having no cam hole and having only the cam surface 35 as shown in FIG. (3) The present invention can be applied to not only motorcycles but also motorcycles or four-wheel buggies.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a left side view of a transmission case portion of a motorcycle including a change device to which the present invention is applied. FIG. 2 is a left side view of the change device when not operating. FIG. 3 is a left side view of the same portion as FIG. 2 showing a state when a hand switch is operated. FIG. 4 is a sectional view taken along line IV-IV of FIG. 2; FIG. 5 is a left side view showing a modified example of the cam plate. FIG. 6 is a left side view showing another modified example of the cam plate. [Description of Symbols] 9 Transmission operation shaft 15 Change lever 16 Connecting rod 17 Change pedal 21 Intermediate lever 22 Pin portion 23 Cam plate 24, 32, 25, 26 Drum for pulley, wire (winding transmission mechanism) 30 Motor (actuator) 35 Cam surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-6251 (JP, A) JP-A-59-159450 (JP, A) JP-A-2-168067 (JP, A) JP-A 63-625 159145 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16H 59/00-59/12 F16H 61/26-61/36 F16H 63/00-63/38 B60K 20/00 -20/08 G05G 1/00-25/04 B62M 25/00-25/08

Claims (1)

(57) [Claims] [Claim 1] In a change device for a motorcycle or the like in which a change pedal is interlockedly connected to a speed change operation shaft and a shift change is performed by raising or lowering the change pedal, reciprocal driving is performed by a hand switch. A reciprocating rotary motor is provided, and the reciprocating rotary motor is linked to a cam plate so that the cam plate is reciprocally rotatable by driving the motor. A pin portion is formed on the intermediate lever, and the cam plate has a cam surface which retreats to a position outside the movement locus of the pin portion when not in operation and contacts the pin portion when operating to rotate the intermediate lever. Characteristic motorcycle and other change devices.