JPH0684134B2 - Vehicle starter - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a starter device that can be switched between forward and reverse and is applied to a vehicle having a starter motor.

(Background of the Invention) A forward transmission system that transmits engine output to a drive wheel via a main transmission with a neutral position and a forward / reverse switching clutch, and an engine output that bypasses the main transmission and is driven via a forward / reverse switching clutch. A vehicle having a reverse transmission system for transmitting to a wheel has already been proposed by the applicant (for example, Japanese Patent Application No.
60-156044).

In this case, even if the main transmission is in the neutral position, the vehicle can be moved backward if the forward / reverse switching clutch is in the reverse position.

When such a vehicle has a starter motor, it is possible to prevent the starter motor from starting when the forward / reverse switching clutch is in the reverse position. However, it is troublesome to operate the forward / reverse switching clutch and the main transmission in an emergency or at night.

(Object of the Invention) The present invention has been made in view of such circumstances, and a forward transmission system including a main transmission having a neutral position,
When the engine output is transmitted to the forward / reverse switching clutch via the reverse transmission system that does not have a neutral position, the engine can be started while preventing the vehicle from starting even if the forward / reverse switching clutch is in the reverse position. It is an object of the present invention to provide a vehicle starting device suitable for an emergency or driving at night.

(Structure of the Invention) According to the present invention, an object of the present invention is to provide a forward transmission system that transmits the output of the engine to the drive wheels via a forward main transmission with a neutral position and a forward / reverse switching clutch, and the output of the engine. In a vehicle including a reverse transmission system that bypasses the main transmission and transmits to the drive wheels via the forward-reverse switching clutch, and a scooter motor activated by a starter switch, the vehicle is connected in series to the starter switch and a travel-restricted state of the vehicle To the travel limit detection switch for closing the circuit, a series circuit including a neutral switch for detecting the neutral position of the main transmission and closing the circuit, and a normally closed switch for opening the forward / reverse switching clutch at the reverse position is connected in parallel. This is achieved by a vehicle starter characterized by being connected.

That is, when the vehicle is in the travel-restricted state, the starter motor can be started without causing a problem with the states of the main transmission and the forward / reverse switching clutch. Here, the travel-restricted state can be detected by the braking state by the brake when the vehicle has an automatic start clutch. If the vehicle is in such a travel restriction 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, FIG. Is a plan view of the display meter,
FIG. 5 is a side view showing the axial arrangement of the engine.

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 FIGS. 2 and 5, 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, which are arranged in parallel with the crankshaft 26. Output shaft
34 and idle shaft 36. The rotation of the crankshaft 26 is driven by a centrifugal automatic clutch 38 for starting and a reduction gearwheel at the right end thereof.
It is transmitted to the reduction gear 42 and the shift clutch 44 provided on the main shaft 28 via 40. 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 and 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 gears 48 and 50 so as to be slidable only in the axial direction. The slider 52 and the gears 48 and 50 respectively form a forward clutch 54 and a reverse clutch 56 which are dog clutches. . The forward clutch 54 and the reverse clutch 56 form a forward / reverse switching clutch 58.

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 28a
Is transmitted to the output shaft 34 via a reverse gear group including gears 36a and 36b provided on the idle shaft 36 and the reverse gear 50, and the reverse clutch 56, thereby forming a reverse transmission system. To be done.

In FIGS. 3 and 5, 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 rotates the transmission drum 60, and as a result, the shift fork moves to shift the transmission 46.

In FIG. 3, reference numeral 64 is a manual forward / reverse switching lever,
It is provided on the left side crankcase 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 slider 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.
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 speed change lever 62 is operated with a foot, 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 from the gear 28a to the output shaft 34 via the reverse transmission system including the reverse gears 36a and 36b of the idle shaft 36, the forward / reverse switching clutch 58 in the reverse position, the reverse gear 50, and the like. , 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 83.

Reference numeral 84 denotes a neutral switch, which is composed of a normally open contact that is closed when the transmission drum 60 of the main transmission 46 is in the neutral position. Reference numeral 86 denotes a reverse 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, 88 is a battery and 90 is an electromagnetic relay. The normally open contact 90a of the electromagnetic relay 90 forms a closed circuit together with the starter motor 80 and the battery 88. Reference numeral 92 is a travel restriction detection switch. The switch 92 comprises a normally open contact that is closed when a vehicle brake (not shown) is in the braking state.
This travel limit detection switch 92 and the starter switch
22a and the coil 90b of the electromagnetic relay 90 are connected in series, and this series circuit is connected to the battery 88.

Reference numeral 94 denotes an electromagnetic relay, which has a normally closed contact 94a which is excited by the closing of the reverse switch 86 and opens. That is, the normally closed contact 94a opens at the reverse position of the forward / reverse switching clutch 58. This normally closed contact 94a is the neutral switch 84.
Is connected in series, and this series circuit 96 is connected in parallel to the traveling limit detection switch 92 via a diode 98.
Reference numeral 100 denotes a neutral lamp, which lights up only when the reverse switch 86 is open and the neutral switch 84 is closed. Reference numeral 102 denotes a reverse indicator that operates when the reverse switch 86 is closed, and includes a buzzer and a lamp.

Therefore, the normally closed contact 94a is closed if the forward / reverse switching clutch 58 is not in the reverse position, and the neutral switch 84 is closed if 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, current will flow through the coil 90b, the diode 98, and the series circuit 96, and the normally open contact 90a will close. Therefore, the starter motor 80 is activated.

Further, since the forward / reverse switching clutch 58 is in the reverse position, if the main transmission 46 is not in the neutral position, the series circuit 96 becomes non-conductive. At this time, if the brake is applied to close the travel restriction detection switch 92, the starter motor 80 is started by pressing the starter switch 22a. That is, even if the engine output transmission system is in a state where the rear wheels 14 can be driven, the starter motor 80 can be started by applying the brakes, and the brakes are in effect even when the engine 16 is started. There is no.

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.

(Advantages of the Invention) As described above, the present invention includes, in the traveling limit detection switch connected in series with the starter switch, the neutral switch that detects the neutral of the main transmission and the reverse switch that opens at the reverse position of the forward / reverse switching clutch. Since the series circuit of is connected in parallel, the starter motor is started by closing the travel limit detection switch when the main transmission or forward / reverse switching clutch is in any state, in the braking state or when the manual clutch is disengaged. It becomes possible. Therefore, when the engine is urgently started or when the engine is started in a dark place at night, it is not necessary to check the states of the main transmission and the forward / reverse switching clutch, and the operation becomes easy.

[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. Plan view,
FIG. 5 is a side view showing the arrangement of the engine. 14 …… Rear wheel as driving wheel, 16 …… Engine, 22a …… Starter switch, 46 …… Main transmission, 58 …… Forward / reverse switching clutch, 80 …… Starter motor, 84 …… Neutral switch, 92… … Travel limit detection switch, 94a… Normally closed contact, 96… Series circuit.

Claims (3)

[Claims] 1. A forward transmission system for transmitting the output of an engine to drive wheels via a forward main transmission with a neutral position and a forward / reverse switching clutch, and a forward transmission for bypassing the output of the engine to the main transmission. In a vehicle equipped with a reverse transmission system that transmits to a drive wheel through a switching clutch and a starter motor activated by a starter switch, a travel limit detection switch that is connected in series to the starter switch and detects a travel limited state of the vehicle to close the vehicle. In addition, a series circuit including a neutral switch that detects the neutral position of the main transmission and closes the main transmission and a normally closed switch that opens at the reverse position of the forward / reverse switching clutch is connected in parallel. apparatus. 2. The vehicle starter according to claim 1, wherein the engine has an automatic start clutch, and the travel limit detection switch detects the travel restricted state from the braking state of the brake. 3. The starting device for a vehicle according to claim 1, wherein the engine has a manual clutch for both starting and shifting, and the travel limit detection switch detects the travel restriction state from the disengaged state of the manual clutch.