JP3277635B2 - Starting lever of kick starter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starting lever of a kick starting device.

[0002]

2. Description of the Related Art An engine must be started by turning a crankshaft from the outside, and a starter is provided for this purpose. For example, there are an electric type and a mechanical type in the engine starting method of a motorcycle.

[0003] As a mechanical engine starting device, a kick starting device in which a rider kicks down a starting lever (kick) to rotate a crankshaft is generally used. Specifically, the kick drive gear of the kick shaft connected to the start lever base end is rotated by the rider kicking down the tip of the start lever, and the crankshaft is driven through the kick idle gear, the primary driven gear, and the primary drive gear. It is designed to be rotated.

[0004] A hinge portion is provided at the base end of the starting lever so that the starting lever can be folded. The starting lever base end is connected to the kick shaft via a joint member, and FIGS. 7A and 7B show the base end 3 of the starting lever 2 and the joint member 4 constituting the hinge part 1.
FIG.

As shown in FIG. 7A, a bottomed hole 5 for fitting a joint member 4 is formed in a base end 3 of a starting lever 2 formed of, for example, aluminum for the purpose of weight reduction. A screw hole 7 for a retaining screw 6 of the joint member 4 is also formed. Further, a stopper 8 is formed at the lower right of the bottomed hole 5 in the drawing.

On the other hand, a joint member 4 formed of, for example, a steel material for the purpose of strength has a kick shaft connecting hole 9 formed in a connecting portion 4a which is one end thereof, and furthermore, a protrusion 1
0 is provided on the upper left of the kick shaft connection hole 9 in the figure. A locking groove 11 for locking the retaining screw 6 is formed in the shaft portion 4b, which is the other end of the joint member 4.

Further, a lock hole 12 is formed in the shaft portion 4b.
In this lock hole 12, two lock balls 13, which are means for holding the starting lever 2 in a fixed position, are provided.
13 is inserted with the lock spring 14 interposed therebetween.

[0008] Lock holes 15, 15 for locking the lock balls 13, 13 are formed in the inner peripheral surface of the bottomed hole 5 of the starting lever base end portion 3. The locking holes 15 are drilled from the outside of the starting lever base end 3, for example, from the left side in the figure with a drill or the like.

The joint member 4 is shown in FIG.
As shown in the figure, the starting lever is fitted into the bottomed hole 5 of the base end portion 3 and is prevented from being removed by a retaining screw 6. In addition, the opening 16 of the locking holes 15, 15 is
7 is closed. Reference numeral 18 denotes an oil seal.

FIG. 7B shows a state in which the starting lever 2 is folded, and two lock balls 13, 13 are urged toward the outer peripheral surface of the shaft portion 4b by the force of the lock spring 14. The starting lever 2 is held in a folded state by being locked in the locking holes 15. Although not shown in detail, when the starting lever base end portion 3 is rotated, for example, 90 ° around the axis of the joint member 4 and the starting lever 2 is deployed to the right side of the vehicle body, the lock balls 13, 13 are disengaged. The protrusions 10 formed on the joint member 4 are disengaged from the locking holes 15, 15 and are locked on the stopper 8 provided on the starting lever base end 3, and the kick-down force of the rider is transmitted to the kick shaft. It is supposed to.

[0011]

However, since the fitting hole of the joint member is a bottomed hole for bag processing, processing is difficult and costly.

If the steel joint member is fitted to the base end of the aluminum starter lever, the contact surface is worn over time and rattling tends to occur, which is not preferable.

Furthermore, since the fitting hole is formed by a bag, in order to form a locking hole on the inner peripheral surface of the joint member fitting hole, a locking hole must be formed outside the base end of the starting lever. On the other hand, after assembling the joint member, the opening of the locking hole must be closed with a blind plug, which has a poor appearance, increases the number of processing steps, and increases costs.

The present invention has been made in view of the above-mentioned circumstances, and has been made in consideration of the above-mentioned circumstances. In addition, the joint member fitting hole is easily machined, while the abrasion resistance is improved and the rattling is suppressed. The aim is to provide a lever.

Another object of the present invention is to provide a locking means for locking a starting lever at a fixed position on an inner peripheral surface of a joint member fitting hole without machining from the outside of a base end of the starting lever. An object of the present invention is to provide a starting lever of a kick starting device capable of forming a hole.

[0016]

SUMMARY OF THE INVENTION A starting lever of a kick starting device according to the present invention has the following features.
As set forth in claim 1, in a kick starting device having a starting lever that can be folded through a hinge portion, a fitting hole of a joint member is formed at a base end of the starting lever, and the fitting is performed. A bush is fitted in the hole, and the bush is formed with a locking hole in which a means for holding the starting lever in a fixed position while the bush is fitted with the joint member can be locked.

In order to solve the above-mentioned problem, as described in claim 2, the fitting hole is penetrated and the bush fitted in the fitting hole is formed in a bottomed cylindrical shape. It is formed in.

[0018]

According to the present invention having the above structure, in a kick starting apparatus having a starting lever that can be folded through a hinge portion, a fitting hole for a joint member is formed at a base end of the starting lever. A bush is fitted in the fitting hole and the bush is formed with a locking hole in which the means for holding the starting lever in a fixed position is formed in the bush while the bush is fitted with the joint member. While the machining of the member fitting hole is easy, the abrasion resistance is improved, and the starting lever of the kick starting device with reduced rattling can be provided, and without processing from the outside of the starting lever base end. A locking hole can be formed on the inner peripheral surface of the joint member fitting hole.

In addition, the above-mentioned fitting hole is penetrated and
Since the bush fitted in the fitting hole is formed in a cylindrical shape with a bottom, processing is facilitated, manufacturing costs can be reduced, and appearance is not impaired.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a right side view showing an example of a motorcycle to which the present invention is applied.

In FIG. 1, the motorcycle 20 has a body frame 21, and a fuel tank 22 is provided above the body frame 21. Also, the body frame 21
An engine 23 is mounted at the lower center of the vehicle.

A head pipe 24 is provided in front of the vehicle body frame 21, and a steering mechanism 25 is provided on the head pipe 24. The steering mechanism 25 includes a front fork 2 that rotatably supports a front wheel 26.
7 and the handlebar 28 are provided.
As a result, the front wheel 26 is steerably rotatable left and right.

On the other hand, a swing arm 30 is pivotally mounted on a pivot shaft 29 erected at the center lower portion of the body frame 21 so as to freely swing around the pivot shaft 29, and a rear wheel 31 is pivoted on the rear end of the swing arm 30. Freely supported.

FIG. 2 is a schematic front view of the motorcycle 20 shown in FIG. 1, and FIG. 3 is a horizontal sectional view of the engine 23 along the line AA in FIG.

As shown in FIGS. 1, 2 and 3, a starting lever 33 of a kick starting device 32, which is a means for starting the engine 23, is provided on the rear right side of the engine 23. A hinge portion 35 is provided at a base end portion 34 of the starting lever 33 so that the starting lever 33 can be folded.

As shown in FIG. 2, the starting lever 33 is normally folded and held upward (X position) to prevent the rider from driving the motorcycle 20. The starting lever 33 is deployed to the right side of the vehicle body when the engine 23 is started (Y position), and the rider kicks down the tip of the starting lever 33 to start the engine 23.

Specifically, as shown by the arrow in FIG. 3, the rider kicks down the tip of the starting lever 33 to rotate the kick drive gear 37 of the kick shaft 36 connected to the hinge 35 while rotating. Sliding leftward, the crankshaft 41 is rotated through the kick idle gear 38, the primary driven gear 39, and the primary drive gear 40.

The starting lever base end 34 is connected to a kick shaft 36 via a joint member 42 to form a hinge 35, and FIG. 4 shows the starting lever base 34 and the joint FIG. 3 shows an assembly configuration diagram of a member 42.

In FIG. 4, a joint member fitting hole 43 is formed in a base end portion 34 of a starting lever 33 formed of, for example, aluminum for the purpose of weight reduction.
A screw hole 45 for a retaining screw 44 of the joint member 42 is also formed. Further, a stopper 46 is formed at the lower right of the joint member fitting hole 43 in the drawing.

On the other hand, the joint member 42 formed of, for example, a steel material for the purpose of strength has a connecting portion 42 which is one end thereof.
A kick shaft connection hole 47 is formed in a, and a protrusion 48 is provided at the upper left of the kick shaft connection hole 47 in the figure.

A locking groove 4 in which a locking screw 44 is locked is formed in a shaft portion 42b which is the other end of the joint member 42.
9 is formed. Further, a lock hole 50 is formed in the shaft portion 42b, and two lock balls 51, 51 serving as means for holding the starting lever 33 in a fixed position sandwich the lock spring 52 in the lock hole 50. Is inserted.

Then, the joint member 42 is arranged as shown in FIG.
As shown in (a), the fitting is fitted into the joint member fitting hole 43 of the starting lever base end portion 34 via the bush 53, and is prevented from being removed by the retaining screw 44. Reference numeral 54 denotes an oil seal.

FIG. 6A is a front view of the bush 53 described above, and FIG. 6B is a sectional view taken along the line BB of FIG. 6A.

In FIGS. 6A and 6B, the bush 53 is formed by molding resin or steel (for example, SPB2).
Are formed into a cylindrical shape with a bottom (cap shape), and locking holes 55 for locking the retaining screws 44 and locking holes 56 for locking the lock balls 51, 51 are formed respectively. You.

Next, the operation of this embodiment will be described.

FIG. 5A shows a state in which the starting lever 33 is folded (position X in FIG. 2), and FIG. 5B shows a state in which the starting lever 33 is expanded to the right side of the vehicle body (FIG. 2). Y position).

When the starting lever 33 is folded as shown in FIG. Locking holes 56 and 5 formed in the bush 53 are urged toward the outer peripheral surface of the bush 53.
6, the starting lever 33 is held in a folded state.

When the starting lever base end portion 34 shown in FIG. 5B is rotated, for example, 90 ° around the axis of the joint member 42 and the starting lever 33 is deployed to the right side of the vehicle body, the lock ball 51 , 51 are disengaged from the locking holes 56, 56 formed in the bush 53, and the projection 48 formed on the joint member 42 is locked on the stopper 46 provided on the base end 34 of the starting lever 34. Is transmitted to the kick shaft 36.

In the present invention, since the joint member fitting hole 43 is formed by penetrating from conventional bag processing, the processing is facilitated and the manufacturing cost can be reduced.

The joint member 42 is connected to the starting lever base end 3 via a bottomed cylindrical (cap-shaped) bush 53.
4 fits into the joint member fitting hole 43, so that the abrasion resistance is improved, rattling can be suppressed, and the opening of the fitting hole 43 can be closed by the bottom surface of the bush 53, so that the appearance can be improved. Do not spoil.

Further, since the bush 53 in which the locking holes 56, 56 are formed in advance is used, the locking holes 56, 56 are formed.
Need not be formed on the inner surface of the joint member fitting hole 43 of the starting lever base end portion 34, and the number of processing steps and cost can be reduced.

Furthermore, the opening of the locking holes 56, 56 is eliminated at the base end 34 of the starting lever, so that the plug is not required, but there is no possibility that foreign matter enters the lock hole 50 of the shaft 42b. And the appearance also improves.

[0044]

As described above, according to the starting lever of the kick starting device according to the present invention, in a kick starting device having a start lever that can be folded through a hinge portion, a base end portion of the start lever is provided. The fitting hole of the joint member is formed in the bush, and a bush is fitted in the fitting hole, and the joint member is fitted in the bush while the means for holding the starting lever in a fixed position can be locked. Since the engaging hole is formed in the bush, it is easy to machine the joint member fitting hole, and it is possible to provide a starting lever of a kick starting device with improved abrasion resistance and reduced backlash. The locking hole can be formed on the inner peripheral surface of the joint member fitting hole without processing from the outside of the lever base end.

In addition, the above-mentioned fitting hole is formed by penetrating,
Since the bush fitted in the fitting hole is formed in a cylindrical shape with a bottom, processing is facilitated, manufacturing costs can be reduced, and appearance is not impaired.

[Brief description of the drawings]

FIG. 1 is a right side view of a motorcycle showing an embodiment of a starting lever of a kick starting device according to the present invention.

FIG. 2 is a schematic front view of the motorcycle shown in FIG.

FIG. 3 is a horizontal sectional view of the engine taken along line AA of FIG. 1;

FIG. 4 is an assembly configuration diagram of a starting lever base end portion and a joint member that constitute a hinge portion.

FIGS. 5A and 5B are partial cross-sectional views of a hinge portion showing a state in which the starting lever is folded and a state in which the starting lever is expanded to the right side of the vehicle body.

FIG. 6A is a front view of a bush, and FIG.
Sectional drawing which follows the BB line of (a).

FIG. 7A is an assembly configuration diagram of a starting lever base end portion and a joint member constituting a conventional hinge portion, and FIG. 7B is a partial cross-sectional view of the hinge portion showing a state where the starting lever is folded. .

[Explanation of symbols]

Reference Signs List 20 motorcycle 23 engine 32 kick starting device 33 starting lever 34 starting lever base end 35 hinge portion 36 kick shaft 42 joint member 42a connecting portion 42b shaft portion 43 joint member fitting hole 51 lock ball (holds start lever in fixed position 53 bushing 56 locking hole for lock ball

Claims (2)

(57) [Claims] 1. A kick starter having a start lever which is foldable via a hinge portion.
3, a fitting hole 43 of a joint member 42 is formed in the base end portion 34, a bush 53 is fitted in the fitting hole 43, and the joint member 42 is fitted in the bush 53. A starting lever for a kick starting device, wherein a locking hole 56 capable of locking a means 51 for holding the lever 33 in a fixed position is formed in the bush 53. 2. A through hole is formed in said fitting hole 43,
The starting lever according to claim 1, wherein the bush (53) fitted in the fitting hole (43) is formed in a cylindrical shape with a bottom.