JPH07115598B2 - Starting device for saddle type vehicle - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starter device which can be switched between forward and backward and is applied to a saddle-ride type vehicle having a starter motor.

(Background of the Invention) When a forward / reverse switching mechanism is provided in a straddle-type vehicle, there is one that interposes this between a speed change auxiliary shaft and an output shaft of a main transmission (for example, Japanese Patent Laid-Open No. 60-37421). . However, in this case, the gear ratio during reverse travel changes depending on the gear stage of the main transmission. For this reason, it is necessary to set the main transmission to a specific gear when moving backward, but the foot-operated transmission pedal must remember the number of times of operation, and the operation is very troublesome. In addition, an interlock mechanism for entering a specific gear is also required.

On the other hand, a forward transmission system that transmits the engine output to the drive wheels via the main transmission with the neutral position and the forward / reverse switching clutch without the neutral position, and the engine output bypasses the main transmission and is driven via the forward / reverse switching clutch. The applicant has studied a saddle-ride type vehicle that has a reverse transmission system that transmits a constant gear ratio to the wheels, and that uses a foot-operated gearshift operator of the main transmission and a switching operator of a forward-reverse switching clutch separately. (For example, Japanese Patent Application No. 60-156044).

In this case, even if the main transmission is not in the neutral position, if the forward / reverse switching clutch is in the reverse position, a constant gear ratio is obtained, the operation is simple and the interlock mechanism is not required.

Further, when such a vehicle has a starter motor, it is desirable that the vehicle does not move even if the forward / reverse switching clutch starts the starter motor in either the forward drive position or the reverse drive position.

Therefore, it is conceivable to provide the forward / reverse switching clutch with a neutral position. However, in this case, both the main transmission and the forward / reverse switching clutch have neutral positions, which makes the operation troublesome.

(Object of the Invention) The present invention has been made in view of such circumstances, and makes it possible to start the engine while preventing the vehicle from starting regardless of whether the forward / reverse switching clutch is in the forward or reverse position. An object of the present invention is to provide a starter device for a saddle-ride type vehicle, which can simplify the operation at the time of switching between advancement modes and can simplify the structure without the need for an interlock mechanism or the like.

(Structure of the Invention) According to the present invention, an object of the present invention is to provide a saddle type vehicle including a starter motor activated by a starter switch.
A forward transmission system that transmits the output of the engine to the drive wheels via the starting clutch, the forward main transmission with the neutral position, and the forward / reverse switching clutch without the neutral position, and the output of the engine with the starting clutch and the A reverse transmission system having a constant gear ratio that is transmitted to the drive wheels by bypassing the main transmission through a forward / reverse switching clutch, a foot-operated speed change operator for changing the speed of the main transmission, and the speed change operator. A switching operator, which is formed independently, for switching the forward / reverse switching clutch, a series circuit of a forward switch that is closed at the forward position of the forward / reverse switching clutch, and a neutral switch that is closed at the neutral position of the main transmission. A series circuit including a reverse switch that is closed at the reverse position of the forward-reverse switching clutch and a travel limit detection switch that is closed when the vehicle is in the travel restricted state. For example, is accomplished by starting device, a straddle-type vehicle, characterized in that a parallel circuit composed of two series circuits are connected in series to said starter switch.

That is, a reverse transmission system without a neutral position that bypasses the main transmission is provided, and when the forward / reverse switching clutch is in the reverse position, the vehicle is in the travel restriction state, and when the forward / reverse switching clutch is in the forward position, The starter motor can be started on condition that the main transmission is in the neutral position. Here, the travel-restricted state can be detected by the braking state by the brake when the vehicle has an automatic start clutch. In such a travel-restricted state, the vehicle will not start even if the starter motor is activated.

(Embodiment) FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is a developed plan view in which a part of an engine is sectioned, and FIG. 3 is a side view of a vehicle equipped with this engine, and FIG. FIG. 4 is a plan view of a display meter.

In FIG. 3, reference numeral 10 is a vehicle body frame, 12 is a pair of left and right steering front wheels, and 14 is a rear wheel as a pair of left and right driving wheels. These front wheels 12 and rear wheels 14 are wide ultra-low pressure tires (so-called balloons). Tires) are installed. 16 is an engine mounted near the center of the car body, 18 is a front fender, 20
Is a rear fender, 22 is a steering bar handle, and 24 is a straddle-type driving seat disposed on the upper part of the vehicle body. In the vicinity of the right hand grip of the steering bar handle 22, the starter motor 80
There is provided a starter switch 22a for activating the.

As shown in FIG. 2, the engine 16 includes a crankshaft 26 arranged in the width direction of the vehicle body, a transmission main shaft 28, a transmission auxiliary shaft 30, an intermediate shaft 32, an output shaft 34, and a transmission main shaft 28 arranged in parallel with the crankshaft 26. Equipped with an idle shaft 36. The rotation of the crankshaft 26 is mediated by the starting centrifugal automatic clutch 38 and the reduction gear 40 at the right end of the crankshaft 26.
It is transmitted to the reduction gear 42 and the shift clutch 44 provided on the main shaft 28. The main shaft 28 and the sub shaft 30 are provided with a gear group forming a known always meshing forward main transmission 46, and the rotation of the main shaft 28 is transmitted to the sub shaft 30 via the main transmission 46. . The shift clutch 44 is temporarily disengaged in conjunction with the shift operation of the transmission 46 and is normally engaged.

A forward gear 48 is rotatably held on the output shaft 34, and integrally formed gears 32a, 32b are rotatably held on the intermediate shaft 32. The rotation of the counter shaft 30 is transmitted to the forward gear 48 via the gears 32a and 32b held by the intermediate shaft 32. A reverse gear 50 is also held on the output shaft 34 in a freely rotatable manner. A slider 52 is provided between the two gears 48, 50 so as to be slidable only in the axial direction.
48 and 50 form a forward clutch 54 and a reverse clutch 56, which are dog clutches, respectively. One of the forward travel clutch 54 and the reverse travel clutch 56 is always in an engaged state, whereby a forward / reverse travel switching clutch 58 without a neutral position is formed.

As a result, a forward transmission system is formed that transmits the rotation of the transmission main shaft 28 to the output shaft 34 via the transmission 46, the gears 32a and 32b on the intermediate shaft 32, and the forward clutch 54.

Further, the rotation of the transmission main shaft 28 is caused by the rotation of the gear 36 provided on the idle shaft 36.
It is transmitted to the output shaft 34 through a reverse gear group including a and 36b and the reverse gear 50 and the like, and the reverse clutch 56, thereby forming a reverse transmission system having a constant gear ratio.

In FIG. 3, reference numeral 60 is a forward speed change drum, and a shift fork (not shown) is engaged with a cam groove formed on the peripheral surface thereof. The foot-operated shift pedal 62 is the gear drum.
Rotate 60, and as a result, the shift fork moves and the transmission
46 shifting is performed. Here, the shift pedal 62 serves as a shift operator of the main transmission 46 of the present invention.

In FIG. 3, reference numeral 64 denotes a manual forward / reverse switching lever as a switching operator, which is provided on the left crankcase of the engine 16 so as to be rotatable in the front-rear direction. A forward / reverse switching drum 66 is disposed in the upper and rear part of the crankcase, and the switching drum 66 is rotated by the switching lever 64 via a link 68. This switching drum 66 is formed with a single cam groove (FIG. 2), and the switching fork 70 moves by being guided by this cam groove. The switching fork 70 engages with the slide 52 on the output shaft 34, and the movement of the fork 70 causes the slider 52 to move. As a result, either the forward clutch 54 or the reverse clutch 56 is selectively connected.

If the switch lever 64 is now tilted forward to the forward position, the output shaft 34
The forward / reverse switching clutch 58 is at the forward position. That is, the forward clutch 54 is engaged and the reverse clutch 56 is disengaged. Therefore, if the rotation of the crankshaft 26 rises and the starting clutch 38 is engaged, the rotation of the crankshaft 26 will be the main shaft 28.
To the gearboxes 32a, 32 on the transmission 46 and the intermediate shaft 32.
b, forward / reverse switching clutch 58 in forward position, forward gear 48
It is transmitted to the output shaft 34 via a forward transmission system composed of.
The rotation of the output shaft 34 is transmitted to the rear wheel shaft 78 via the final shaft 72, the propeller shaft 74 and the final reduction gear 76 via the bevel gear (FIG. 3), and the vehicle moves forward. When the foot is operated with the speed change lever 62, the speed change clutch 44 is momentarily disengaged and the speed change of the transmission 46 is performed.

If you pull the switching lever 64 backward and switch to the reverse position,
The slider 52 on the output shaft 34 moves and the forward / reverse switching clutch
58 is in the reverse position. That is, the forward clutch 54 is disengaged and the reverse clutch 56 is engaged. Therefore, the rotation of the main shaft 28 is transmitted to the output shaft 34 via a reverse transmission system of a constant gear ratio including the reverse gears 36a and 36b of the idle shaft 36, a forward / reverse switching clutch 58 in the reverse position, and a reverse gear 50. The vehicle goes backwards.

In FIGS. 1 and 2, 80 is a starter motor, and the rotation of the motor 80 is transmitted to the crankshaft 26 via the chain 82 and the one-way clutch 84.

Reference numeral 86 is a neutral switch, which is constituted by a normally open contact point that is closed when the transmission drum 60 of the main transmission 46 is in the neutral position. Reference numeral 88 denotes a reverse detection switch, which is composed of a normally open contact that is closed when the forward / reverse switching drum 66 of the forward / reverse switching clutch 58 is in the reverse position.

In FIG. 1, 90 is a battery, and 92 is an electromagnetic relay having a normally open contact 92a and a coil 92b. The normally open contact 92a forms a closed circuit together with the starter motor 80 and the battery 90.
Reference numeral 94 is an electromagnetic relay that opens and closes by a reverse detection switch 88, and includes a forward switch 94a that is a normally closed contact and a reverse switch 94b that is a normally open contact. Reference numeral 96 denotes a travel limit detection switch, which is a normally open contact that is closed when a vehicle brake (not shown) is in a braking state. This travel limit detection switch 96 and the reverse switch
94b is connected in series to form a series circuit A. The forward switch 94a is connected in series with the neutral switch 86,
A series circuit B is formed. These two series circuits A and B are connected in parallel, and this parallel circuit is the starter switch 22.
a and the coil of the electromagnetic relay 90 are connected in series. 9
8 is a neutral lamp, the neutral switch 8
Lights when 6 is closed. Further, 100 is a reverse drive indicator lamp which is activated by closing the reverse drive detection switch 88.

Therefore, the forward switch 94a is closed when the forward / reverse switching clutch 58 is in the forward position, and the neutral switch 86 is closed when the main transmission 46 is in the neutral position. At this time, the vehicle does not run even if the engine 16 is started, and if the starter button 22a is pressed in this state, a current flows through the coil 92b and the series circuit B, and the normally open contact 92a is closed. Therefore, the starter motor 80 is activated.

When the forward / reverse switching clutch 58 is in the reverse position, the reverse switch 94b is closed. At this time, the brake is applied to close the travel restriction detection switch 96, and if the starter switch 22a is further pressed, a current flows through the coil 92b and the series circuit A, and the starter motor 80 is started. That is, even if the transmission system of the engine output is in a state where the rear wheels 14 can be driven in the reverse direction, the starter motor 80 can be started by applying the brake. At this time, even if the engine 16 is started, the brakes are in effect, so the vehicle will not start rearward.

In this embodiment, a start clutch is provided in front of the shift clutch 44.
Although the start clutch 38 is provided, the start clutch 38 may be omitted, and the shift clutch 44 may be configured as a manual clutch so that the start clutch is also used as the manual clutch. In this case, the travel limit detection switch may be a switch that closes when the manual clutch is disengaged.

(Effects of the Invention) As described above, the present invention provides the reverse transmission system having a constant gear ratio so as to bypass the main transmission, so that the gear ratio at the time of reverse is constant regardless of the gear stage of the main transmission. . For this reason, it is not necessary to operate the gearshift operator of the foot-operated main transmission during reverse travel, which simplifies the operation. In addition, since the main transmission does not need to be set to a specific gear when moving backward, an interlock mechanism is not required and the device is simplified.

Furthermore, a series circuit in which a neutral switch is connected in series to a forward switch that is closed at the forward position of the forward / reverse switching clutch and a series circuit in which a travel limit detection switch is connected in series to a reverse switch that is closed at the reverse position of this clutch are connected in parallel. Since the parallel circuit is connected and the parallel circuit is connected in series to the starter switch, when the clutch is in the forward drive position, the starter motor can be started only when the main transmission is in neutral, and the vehicle body does not inadvertently move forward. When the clutch is in the reverse position, the starter motor can be started only when the vehicle is in the travel-restricted state. Therefore, the engine can be started only in this state, and the vehicle does not reverse carelessly.

If the starting clutch is a centrifugal automatic clutch, by setting the braking state of the brake to the travel-restricted state, even if the engine speed rises excessively at engine start and the centrifugal automatic clutch is engaged, it will start. It can be surely prevented. Further, when the starting clutch is a manual clutch that also serves as a gear shift, the vehicle will not start if the manual clutch is disengaged. Therefore, the disengaged state of the manual clutch may be used as the travel restriction state.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is a developed plan view in which a part of an engine is sectioned, FIG. 3 is a side view of a vehicle equipped with this engine, and FIG. 4 is a display meter. It is a top view. 14 …… Rear wheel as driving wheel, 16 …… Engine, 22a …… Starter switch, 38 …… Starting centrifugal automatic clutch 46 …… Main transmission, 58 …… Forward / reverse switching clutch, 62 …… Pedic Shift pedal 64 as a speed change operator 64 ...... Switch lever as a change operator 80 ...... Starter motor, 86 ...... Neutral switch, 94a ...... Forward switch, 94b ...... Reverse switch, 96 ...... Travel limit detection switch, A , B ... Series circuit.

Claims (3)

[Claims] 1. A straddle-type vehicle including a starter motor activated by a starter switch, wherein an engine output is transmitted through a starting clutch, a forward main transmission with a neutral position, and a forward / reverse switching clutch without a neutral position. A forward transmission system that transmits the output of the engine to the drive wheels by bypassing the main transmission via the starting clutch and the forward-reverse switching clutch, and a forward transmission system that transmits the output of the engine to the drive wheels. A foot-operated speed change operator for changing the speed of the main transmission, and a switching operator formed independently of the speed change operator for switching the forward-reverse switching clutch.
A series circuit of a forward switch that is closed at the forward position of the forward / reverse switching clutch and a neutral switch that is closed at the neutral position of the main transmission, a reverse switch that is closed at the reverse position of the forward / reverse switching clutch, and vehicle travel restriction A starter device for a saddle-ride type vehicle, comprising: a series circuit with a travel restriction detection switch that is closed in a state, and a parallel circuit including these two series circuits is connected in series to the starter switch. 2. The straddle-type vehicle starter according to claim 1, wherein the starting clutch is a centrifugal automatic clutch, and the travel restriction detection switch detects the travel restriction status from the braking status of the brake. 3. The straddle-type vehicle according to claim 1, wherein the starting clutch is formed of a manual clutch that also serves as a gear shift, and the travel restriction detection switch detects the travel restriction status from the disengaged state of the manual clutch. Starter.