JPS62178492A - Minicar - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION 3. Detailed Description of the Invention First of all, the present invention relates to small-sized vehicles such as motorcycles and tricycles, and particularly relates to a reversing device for such small-sized vehicles.

m-- and 1. Bamboo motorcycles and tricycles are traditionally driven in reverse because lightness is important and there is little need for it! In general, e-devices were not provided. However, relatively large motorcycles and other vehicles are heavy, and it is not always easy to store such vehicles in a narrow garage or parking space by moving the vehicle back and forth, and there is no need for a reverse drive device. There may be no.

In motorcycles, the engine power is the crankshaft.
The rotational force of the drive shaft is transmitted to the rear wheels via the secondary reduction gear. The drive shaft is integrated with the engine, thereby achieving compactness. Therefore, it is not easy to incorporate a reverse mechanism into such a power transmission mechanism and maintain its compactness.

For this purpose, in the present invention, in a small vehicle equipped with an engine started by a starter motor, the starter motor is disposed adjacent to a drive shaft led out from the engine. , a gear switching device is provided that can selectively connect the output shaft of the starter motor to the crankshaft of the engine or the drive shaft (), and when the vehicle is moving backward, the output shaft of the starter motor (
The sleeve is connected to the drive shaft, and the drive shaft is directly driven by the 114 starter motor.

According to the present invention, the starter motor for engine starting disposed adjacent to the drive shaft can be directly connected to the drive shaft via a gear switching device, and can be used as a drive source during reversing. ．． Without making any changes to this embodiment, it is possible to make it possible to drive backwards while maintaining its compactness.

Branch” L Emperor Hereinafter, the present invention will be described with reference to illustrated embodiments.

In Fig. 1, reference numeral 1 denotes a drive shaft in the two wheels, which is rotatably supported by the engine crankcase 2, and has teeth! f13
It is connected to a transmission (not shown) via an engine, and is driven by an engine. This drive shaft 1 is connected to a rear wheel via a chain drive type or shirt 1-drive type secondary reduction gear, and drives the rear wheel. A starter motor 4 is arranged adjacent to the drive shaft 1. The output shaft 5 of the pill motor 4 is fitted coaxially with the starter @6 and rotatably relative to each other. A switching gear shaft 7 is disposed parallel to the output shaft 5 tr 3, the starting shaft 6, and the drive shaft 1. It is supported and biased toward the left by a spring 8.

The switching gear shaft 7 has gears 9 and 10 on the right side, the gear 9 is always in mesh with the gear 11 provided on the output shaft 5 of the starter motor 4, and the gear 10 is on the left side as shown by the solid line in the figure. When the switching gear shaft 7 moves one step to the right position shown by the chain line, the gear 1 engages with the gear 12 provided on the starting shaft 6.
0 and the gear 12 are disengaged from each other. Roughly another gear 13 is provided at the right end of the switching gear @7, and this gear 13 moves the switching gear shaft 7 to the right position 1.
When it learns, it meshes with a gear 14 provided on the drive shaft 1.

A sprocket 15 with a built-in one-way clutch is provided on the starting shaft 6, and a chain is connected between this sprocket 15 and a sprocket provided on the engine crankshaft or a suitable shaft linked thereto. ing. The switching gear shaft 7 is normally in the left position due to the spring 8, and the gears 10 and 12 are meshed with each other, so that when the starting motor 4 is rotated, the starting shaft 6 is rotated through the gears 11, 9, 10, and 12. The one-way clutch is engaged in this rotational direction, the sprocket I.15 rotates together with the starting shaft 6, and the crankshaft of the engine is driven by the starting motor 4 through the chino to start the engine. It goes without saying that the direction of rotation of the starter motor 4 is determined so as to rotate the crankshaft in the normal rotation direction. After the engine starts, the driving force from the engine side is cut off by disengaging the one-way clutch and is not transmitted to the starting shaft 6.
Drive via clutch and transmission! Jl@1 is rotationally driven in the forward direction.

When the switching gear shaft 7 is displaced to the right position against the spring 8, the teeth of the gears 10 and 12 are disengaged and the gears 13 and 14 are engaged with each other, so that the starter motor 4 is rotated in this state. When this happens, the rotational force is not transmitted to the starting shaft 6,
It is directly transmitted to the drive shaft 1.

At this time, the direction of rotation of the drive shaft 1 is opposite to the direction of rotation when the vehicle is driven by the engine, so that the rear wheels connected to the drive shaft 1 are driven in the reverse direction.

The rotation direction of the starter motor 4 does not change whether the engine is started or when driving in reverse, and always rotates in a constant direction.

As mentioned above, in order to displace the switching gear 1rd17 to the right and perform reverse drive by the hill motor 4, the fixed @1
A switching lever 17 that can swing around G is provided, and an engagement shaft 18 protruding from the tip of one arm 17a of the lever 17 engages an engagement groove 19 provided in the switching gear @l17. is engaged in. The other arm 17b of the switching lever 17
is connected to a switching cable 20 to be described later, and by manually pulling the switching cable 20, the switching lever 17 rotates around the fixed shaft 16, and the switching gear @7 is moved against the spring 8 to the right side. Slide to reverse drive position. A normal back gear switch 21 is fixed close to the arm 17b of the switching lever 17, and when the switching lever 1γ rotates, the operating piece 21a is pushed by the 1;7I switching lever 17, and the back gear switch 21 is closed. .

The switching cable 20 is connected to a clutch lever 24 provided along a grip 23 of a steering handle 22, as shown in FIG. The clutch lever 24 has a hinge pin 2G attached to a support 25 fixed to the handle 22.
The clutch cable 27 is pivotally connected through the transmission and connected to a clutch cable 27 that operates a clutch provided in the transmission, and serves to gradually transmit driving force to the transmission when the motorcycle starts, thereby smoothly starting the motorcycle. It has a function that temporarily cuts off the transmission force between the engine and the transmission when shifting, allowing gear shifting. A switching link 28 is also pivotally attached to the hinge pin 26 so as to sandwich the clutch lever 24 between the hinge pin 26 and the support body 25, and the switching cable 20 is connected to this switching link 28. The clutch lever can be inserted into the switching link 28 from above by passing through a hole provided therein.
A switching button 29 that can protrude to the side of 24 is provided.
3, always 11) is pushed upward by the spring 30 L
I'm getting lost.

Therefore, if you continue to pull the clutch lever 24 toward the grip 23, the clutch lever will move as shown in FIG.
24 pivots around hinge pin 26, and in response clutch cable 27 is pulled as shown by arrow a to release the clutch. The switching link 28 does not pivot because the switching button 29 is in the upper position and is not engaged with the clutch lever 24, and the switching cable 20 is not activated.

In this way, a normal clutch operation is performed.

When the clutch lever 24 is pulled while pressing the switching button 29, the switching button 29 protruding from the lower surface of the switching link 28 moves to the rear side 24 of the clutch lever 24, as shown in FIG.
a, the switching link 28 is engaged with the clutch lever 2.
4 and pivots around the hinge pin 26 and arrows a,
As shown by b, when the clutch cable 27 is pulled, the switching cable 20 is also pulled. As a result, the clutch is released, the switching lever 17 is rotated via the switching cable 20, and the switching gear shaft 7 is switched to the reverse drive position.

Even if you release your hand from the switching button 29 after pulling the clutch lever 24, the switching button 29 will not move the clutch lever 24.
Therefore, due to friction with 24a, it will not be pulled out upwards,
The above-mentioned backward drive state is maintained. Reference numeral 31 denotes a reverse switch and speed control lever. When the reverse switch and speed control lever 31 is pressed while holding the clutch lever 24, the vehicle starts moving backward, and the reverse speed can be freely controlled by pressing the lever 31. can do.

FIG. 5 shows a drive control circuit for starter motor 4. As shown in FIG.

This circuit includes a starting power supply circuit 33 and a reverse power supply circuit 34, each connected to a variable valve 32, and a starter switch 35 connects the starter motor 4 to either of the power supply circuits. When starting the engine, the starter motor 4 is connected to the starting power supply circuit 33 to rotate the starter motor 4, and the engine is started as described above. When traveling backward, the starter switch 35 is connected to the reverse power supply circuit 34 side. The backward power supply circuit 34 is opened by energizing the relay 36 and closing the contacts a and b using the movable piece 37 thereof. However, relay 36
is the stand switch 38. Seat switch 39. Neutral switch 40 and the back gear switch 2
1 is turned on, it is excited. The stand switch 38 is turned on when the stand that supports the vehicle body in an upright state is raised when the vehicle is stopped so that it can run, and the seats 1 to 39 are turned on when the driver is seated on the seat, and the neutral switch is turned on. 40 is turned on by placing the transmission in neutral. That is, the driver must raise the stand, sit in the seat, and switch the transmission to neutral in order to move backwards. Once this condition is met, the clutch lever 24 is pulled in the manner described with reference to FIG. 4, and the switching gear shaft 7 is moved to the right reverse drive position in FIG. 1 via the switching cable 20 and the switching lever 17. When the switching lever 11 is rotated, the reverse gear switch 21 is turned on, the relay 36 is excited, and the movable piece 3γ opens the p-adic power supply circuit 34.

Since the driving force required for running backwards is about a fraction of the driving force required when starting the engine, it is quite possible to use the cell seventer 4 for driving backwards. If the output is used as it is for reversing, the reverse vehicle speed will be too fast, so a chopper circuit 41 is inserted into the reverse power supply circuit 34 and current is intermittently passed through the starter motor 4 to rotate the starter motor 4 at an appropriate speed. That's how it is.

This chopper circuit 41 also serves as a switch, and by operating the back switch/speed control lever 31 connected to the circuit, power is supplied to the starter motor 4 from fm to start the starter motor 4, and also to the starter motor 4. The rotational speed of starter motor 4, that is, the reverse speed can be changed by controlling the current sent.

The switching lever 17 is connected to a solenoid 42 as shown in FIG.
By energizing the solenoid 42 via a suitable switch, the switching lever 17 may be rotated to switch the switching vehicle @7 to the reverse drive position.

As described above, in the present invention, in a small vehicle equipped with an engine started by a starter motor, the starter motor is disposed adjacent to a drive shaft derived from the engine, and the output of the starter motor is 11- is provided with a gear switching device capable of selectively connecting to the crankshaft of the engine or the drive shaft, and when the vehicle is in rearview, the output shaft of the starter motor is connected to the drive shaft, and the drive shaft is directly driven by the starter motor. As a result, it is possible to maintain the compactness of the conventional engine without making any changes to the basic form of the conventional engine, and to make it possible to drive the engine in reverse using the starter motor for starting the engine as the drive source.

[Brief explanation of drawings]

Fig. 1 is a new front view showing a reverse drive mechanism in a motorcycle to which the present invention is applied, Fig. 2 is a perspective view showing a handle portion of the motorcycle, Figs. 5 is a drive control circuit diagram of the starter motor, and FIG. 6 is a diagram showing another embodiment of the present invention. 1... Drive shaft, 2... Crank case. , three river gears,
4... Cell motor, 5... Output shaft, 6... Starting shaft, 7... Switching gear shaft, 8... Spring, 9.10
．． 11.12゜13, 14...Gear, 15...Sub Oket, 16...Fixed shaft, 11...Switching lever,
18... Engagement shaft, 19... Engagement groove, 20... Switching cable, 21... Back gear switch, 22...
Handle, 23...Grip, 24...Clutch lever 125...Support, 26...Hinge bin, 27
...Clutch cable, 28...Switching link, 29
...Switching button, 30...Spring, 31...
Back switch and speed control lever, 32... battery, 33... starting power supply circuit, 34... reverse power supply circuit,
35...Starter switch, 36...Relay, 31
...Movable piece, 38...Stand switch, 39...
・Seat switch, 40...neutral switch,
41... Chopper circuit, 42... Solenoid.

Claims (1)

[Claims] In a small vehicle equipped with an engine started by a starter motor, the starter motor is arranged adjacent to a drive shaft derived from the engine, and the output shaft of the starter motor is selectively connected to the crankshaft of the engine or the drive shaft. A small vehicle, characterized in that it is provided with a gear switching device that can be connected to the starter motor, and when the vehicle is moving backward, the output shaft of the starter motor is connected to the drive shaft so that the drive shaft is directly driven by the starter motor.