JPS6020579B2 - motorcycle starting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention utilizes the rolling displacement of the steering wheel, which is performed an infinite number of times while the motorcycle is running, to wind up a mainspring spring, and start the engine with the rotational energy generated when the mainspring spring is released. The present invention relates to a starting device for a motorcycle.

The kick lever type and starter motor type are currently commonly used as starting devices for motorcycles.

Among these, the kick lever type has the advantage of being simple in structure, but has the disadvantage that it requires a lot of pedal effort to start, and requires some skill to start. on the other hand,
Starter motor type starters have the advantage of not requiring any human power or skill for starting operations, but have the disadvantages of complex structures and increased size, weight, and cost.

This invention uses a method completely different from the conventional method to rotate the crankshaft at the time of starting, thereby eliminating the disadvantages of the conventional method described above and starting the engine with simple and easy operation without requiring any skills. This is how it was done.

Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a handlebar of a motorcycle, which rotates within a predetermined range around an axis 2.

It goes without saying that the handlebar 1 is rotated by the rider when driving the motorcycle to change the course or maintain running balance. A disk-shaped connecting plate 3 that extends around the handle 2 along with the handle IH is attached to an appropriate place on the handle 1, and both ends of the wire 4 are engaged with the left and right two places of the connecting plate 3. It has been stopped.
The middle part of the wire 4 is wound around a rotating ball 5 that is supported near the engine so that it can be freely rotated, so that when the handle 1 is rotated about the shaft 2, the rotating shaft 5 is rotated. It has become. The base end of a nearly T-shaped drive arm 6 is integrally attached to the rotating shaft 5, and pins 7 and 8 are provided at both ends of the drive arm 6. The base ends of springs 9 and 10 are locked.

Each tip of the springs 9 and 10 is wound around the tip of a driven arm 12 whose base end is attached to a driven shaft 11, which will be described later. In FIG. 2, reference numeral 13 denotes a case, which is either the mission case itself or is provided integrally with the mission case.

The case 13 is rotatably provided with a driven shaft 11 whose one end is supported by a bearing 14 .

A rotary plate 15 is spline-coupled to the driven shaft 11 so as to rotate together with the driven shaft 11. The outer periphery of the rotating plate 15 is connected to a mainspring mounting tube 17 rotatably supported by the driven shaft 11 via a one-way clutch 16. The inner end of a mainspring spring 18 is fixed to the mainspring mounting cylinder 17, and the outer end of the mainspring spring 18 is fixed to the case 13 with a pin 19. A mainspring spring release cam 20 is rotatably attached to a suitable location on the case 13 by a pin 21.

The mainspring spring release cam 201 is formed with an operating wire attachment part 22, and by pulling the operating wire (not shown) attached to this part, the mainspring spring release cam 20 rotates around the pin 21. , the mainspring mounting cylinder 17 is disengaged from the mainspring mounting cylinder 17 to allow rotation of the mainspring mounting cylinder 17. The right end of the mainspring cylinder 17 is connected to a sprocket 24 via a centrifugal clutch 23.

The sprocket 24 is rotatably supported by the drip shaft 11, and is configured to rotate a crankshaft (not shown) directly through a chain or through another shaft.

This starting device constructed in this way operates as follows.

That is, the rotational displacement of the handlebar 1, which is performed an infinite number of times when the motorcycle runs, is transferred to the rotational shaft 5 via the wire 4.
is transmitted, causing the drive arm 6 to rotate left and right about the rotating shaft 5. When the drive arm 6 rotates, the driven shaft 11 rotates left and right via the springs 9 and 10 and the driven arm 12.

When the driven shaft 11 rotates, this rotational force is transmitted to the rotating plate 15, one-way clutch 16, and mainspring mounting tube 17.
It is transmitted in this order, and winds up the mainspring spring 18 from its inner end.

At this time, the mainspring spring release cam 20 prevents the mainspring mounting cylinder 17 from rotating so that the mainspring mounting cylinder 17 does not follow the rotation due to the force of the mainspring spring 18.

The force with which the driver operates the steering wheel 1 is thus transmitted, winds the mainspring spring 18, and accumulates energy in the mainspring spring 18.

Sufficient energy is accumulated in the mainspring spring 18,
When it is no longer possible to reel in any more, the driven shaft 11 and therefore the driven arm 12 are no longer able to rotate, so the force applied from the six drive arms is absorbed by the springs 9 and 1. When starting the engine, the mainspring spring opening cam 20 is detached by operating an operation wire (not shown) to allow free rotation of the mainspring mounting cylinder 17.
The rotational energy stored in the mainspring spring 18 is transferred from the mainspring mounting tube 17 to the centrifugal one-way clutch 23.
The engine is started because the signal is transmitted to the sprocket 24 via the chain and rotates the crankshaft via the chain.

After the engine starts, the sprocket 24 continues to rotate, but this rotational force is not transmitted to the mainspring mounting cylinder 17 due to the action of the centrifugal one-way clutch 23.

Figures 3 through 5 show another embodiment of the invention, which does not use a centrifugal one-way clutch.

Further, in this case, the shapes of the drive arm 25 and the driven arm 26 are simplified, and the driven arm 26 is pulled by one spring 27.

Further, the outer end of the mainspring spring 18 is not fixed to the case 34, but is fixed to a cup-shaped mainspring cover 28 provided close to the mainspring spring 18, and a drive gear 29 is integrally attached to the mainspring cover 28 with a screw 30. installed. The drive gear 29 meshes with the driven gear 31 and rotates a sprocket 32 that rotates together with the driven gear 31.
Note that a notch 33 is provided in a part of the drive gear 29, as shown in FIG. 5, so that the driven gear 31 does not mesh with this part. In addition to the driven shaft 11, another shaft 35 is rotatably supported in the case 34 of this device, and the aforementioned driven gear 31 and sprocket 32 are integrally attached to this shaft 35. There is.

There is also a mainspring spring release cam 36, which prevents the mainspring cover 28 from rotating when an operation wire (not shown) is not operated. Other parts with the same reference numerals as in FIGS. 1 and 2 are the same parts and operate in the same way. In this device,
The driven arm 26 always follows the drive arm 25, and the mainspring spring 18 is wound only when the drive arm 25 rotates in all directions as shown in FIG.

When the mainspring cover 28 is allowed to rotate by operating the mainspring spring release cam 36, the rotational energy accumulated in the mainspring spring 18 is transmitted to the mainspring cover 28, the drive gear 29, the driven gear 31, and the sprocket 32 in this order. A crankshaft (not shown) is rotated. After the engine starts, the sprocket 32 is driven by the engine and rotates, but when the engine starts, the notch 33 of the drive gear 29 faces the driven gear 31, and the engine rotates at this part. Power will be cut off. As described above, this invention has the effect of storing the rotational displacement of the handlebar in the mainspring spring, thereby making it possible to start the motorcycle extremely easily and reliably.

Furthermore, since the structure is simple, it has advantages in terms of size, weight, cost, etc.

[Brief explanation of drawings]

FIG. 1 is a plan view of one embodiment of the present invention, FIG. 2 is a sectional view showing the side surface of FIG. 1, FIG. 3 is a plan view of another embodiment of the invention, and FIG. 4 is FIG. FIG. 5 is a front view showing the relationship between the drive gear and the driven gear shown in FIG. 4. 1... Handle, 2... Shaft, 3... Connecting plate, 4...
... Wire, 5... Rotating shaft, 6, 25... Drive arm, 11... Driven shaft, 12, 16... Driven arm, 16... One-way clutch, 18... Mainspring spring. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. In a motorcycle whose engine crankshaft is rotated by a mainspring spring when starting, the steering handle is provided with a connecting plate that rotates together with the handle shaft, and the connecting plate is integrated with a drive arm provided near the mainspring spring. The steering wheel is connected to the attached rotation shaft by a wire so as to transmit the rotation position of the steering handle, and a driven arm that follows the rotation of the drive arm is provided near the drive arm, and rotates integrally with the driven arm. A starting device for a motorcycle, characterized in that the mainspring spring is connected to a driven shaft via a one-way clutch, and the mainspring spring is wound by rotation of the drive arm.