JPH0791350A - Starting lever of kick starter - Google Patents

Abstract

PURPOSE:To provide a starting lever of a kick starter that is easy to machine a joint member fitting hole and also to improve wear resistance as well as to check any lost motion. CONSTITUTION:In a kick starter equipped with a foldable starting lever 33 via a hinge part 3, a fitting hole 43 of a joint member 42 is piercedly installed in a base end 34 of this starting lever 33, and on the other hand, a bush 53 is fitted in this fitting hole 43 and, in turn, the joint member 42 is fitted in this bush 53.

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 has to be started by rotating a crankshaft from the outside, and is equipped with a starting device for this purpose. For example, engine starting methods for motorcycles include an electric type and a mechanical type.

As a mechanical engine starting device, a kick starting device is generally used in which a rider kicks down a starting lever (kick) to rotate a crankshaft. Specifically, the rider kicks down the tip of the starting lever to rotate the kick drive gear of the kick shaft that is connected to the base end of the starting lever. It is designed to be rotated.

A hinge portion is provided at the base end of the starting lever so that the starting lever can be folded. The base end portion of the starting lever is connected to the kick shaft via a joint member, and in FIGS. 7A and 7B, the base end portion 3 of the starting lever 2 and the joint member 4 constituting the hinge portion 1 are shown.
The assembly block diagram of is shown.

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

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

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

Locking 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 portion 3. The locking holes 15 and 15 are drilled from the outside of the starting lever base end portion 3, for example, from the left side in the drawing with a drill or the like.

The joint member 4 is shown in FIG.
As shown in FIG. 5, the starting lever base end portion 3 is fitted into the bottomed hole 5 and is retained by the retaining screw 6. Further, the openings 16 of the locking holes 15, 15 are blind plugs 1.
Blocked by 7. Reference numeral 18 is an oil seal.

FIG. 7B shows a state in which the starting lever 2 is folded, and the two lock balls 13, 13 are urged by the force of the lock spring 14 toward the outer peripheral surface of the shaft portion 4b. The starting lever 2 is held in a folded state by being locked in the locking holes 15, 15. Further, although not shown in detail, in a state in which the starting lever base end portion 3 rotates, 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 The projection 10 formed on the joint member 4 is released from the locking holes 15 and 15 and is locked by the stopper 8 provided on the starting lever base 3 to transmit the kicking force of the rider to the kick shaft. It is supposed to do.

[0011]

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

Further, if a joint member made of steel is fitted to the base end of the starting lever made of aluminum, the contact surface tends to wear and rattling over time, which is not preferable.

Further, since the fitting hole is formed as a bag, in order to form the locking hole in the inner peripheral surface of the fitting hole of the joint member, the locking hole must be formed from the outside of 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 is not good in appearance and increases the number of processing steps and costs.

The present invention has been made in consideration of the above-mentioned circumstances, and the start of the kick starter in which the joint member fitting hole can be easily machined while the wear resistance is improved and rattling is suppressed. The purpose is to provide a lever.

Another object of the present invention is to provide a starting lever of a kick starting device which can form a locking hole in the inner peripheral surface of a joint member fitting hole without machining from the outside of the base end of the starting lever. is there.

[0016]

In order to solve the above-mentioned problems, the starting lever of the kick starting device according to the present invention is
As described in claim 1, in a kick starter equipped with a starter lever that is foldable via a hinge part, a fitting hole of a joint member is bored through a base end part of the starter lever while the fitting is performed. A bush is fitted in the fitting hole, and the joint member is fitted in the bush.

In order to solve the above-mentioned problems, as described in claim 2, the bush is formed with a locking hole for locking means for holding the starting lever in a fixed position. .

[0018]

According to the present invention having the above-described structure, in the kick starter having the starting lever that can be folded through the hinge portion, the fitting hole of the joint member is formed through the base end of the starting lever. On the other hand, since the bush is fitted in the fitting hole and the joint member is fitted in the bush, it is easy to process the fitting hole of the joint member, while abrasion resistance is improved and rattling is suppressed. It is possible to provide a starting lever for a kick starting device.

Further, since the bush is formed with a locking hole for locking the means for holding the starting lever in a fixed position, the inside of the joint member fitting hole can be processed without machining from the outside of the base end of the starting lever. Locking holes can be formed on the peripheral surface.

[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 vehicle body frame 21, and a fuel tank 22 is provided above the vehicle body frame 21. In addition, the body frame 21
An engine 23 is mounted in the lower center part of the.

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, the handlebar 28, etc. are provided, and the handlebar 28
As a result, the front wheels 26 are steered so as to be rotatable left and right.

On the other hand, a swing arm 30 is pivotally attached to a pivot shaft 29 provided under the center of the body frame 21 so as to swing around the pivot shaft 29, and a rear wheel 31 is rotated at 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 taken along the line AA of 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 the base end portion 34 of the starting lever 33, and the starting lever 33 can be folded.

As shown in FIG. 2, the starting lever 33 is normally folded and held upward (X position) so as not to prevent the rider from driving the motorcycle 20. Further, 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 the tip of the starting lever 33 down to rotate the kick drive gear 37 of the kick shaft 36 connected to the hinge portion 35 while rotating. Sliding to the left, the crankshaft 41 is rotated via the kick idle gear 38, the primary driven gear 39, and the primary drive gear 40.

The starting lever base end portion 34 is connected to the kick shaft 36 via a joint member 42 to form a hinge portion 35, and in FIG. 4, the starting lever base end portion 34 and the joint forming the hinge portion 35 are shown. The assembly block diagram of the member 42 is shown.

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

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

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

The joint member 42 is shown in FIG.
As shown in (a), it is fitted into the joint member fitting hole 43 of the starting lever base end portion 34 via the bush 53, and is retained by the retaining screw 44. Reference numeral 54 is an oil seal.

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

In FIGS. 6A and 6B, the bush 53 is made of resin or steel (eg SPB2).
Is press-molded into a cap shape, for example, and has locking holes 55 for locking the retaining screw 44 and locking holes 56, 56 for locking the lock balls 51, 51, respectively.

Next, the operation of this embodiment will be described.

FIG. 5 (a) shows the state where the starting lever 33 is folded (X position in FIG. 2), and FIG. 5 (b) shows the state where the starting lever 33 is deployed to the right side of the vehicle body (see FIG. 2). (Y position).

In the folded state of the starting lever 33 shown in FIG. 5A, the two lock balls 51, 51, which are means for holding the starting lever 33 in a fixed position, are caused by the force of the lock spring 52 to cause the shaft portion to move. The locking holes 56, 5 formed in the bush 53 by being urged toward the outer peripheral surface of 42b.
By locking the start lever 33, the starting lever 33 is held in a folded state.

Further, in the state where the starting lever base end portion 34 shown in FIG. 5B is rotated by, 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 is formed. , 51 are disengaged from the locking holes 56, 56 formed in the bush 53, and the protrusion 48 formed on the joint member 42 is locked on the stopper portion 46 provided on the starting lever base end portion 34. The kicking down force is transmitted to the kick shaft 36.

In the present invention, since the joint member fitting hole 43 is subjected to the through process instead of the conventional bag process, the process is facilitated and the manufacturing cost can be reduced.

Further, the joint member 42 is replaced with the bush 53.
Since it is fitted into the joint member fitting hole 43 of the starting lever base end portion 34 via the, the abrasion resistance is improved and rattling can be suppressed.

Furthermore, since the bush 53 in which the locking holes 56, 56 are formed in advance is used, the locking holes 56, 56
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 portions of the locking holes 56, 56 in the starting lever base end portion 34 are eliminated, so that a blind plug is not necessary, but there is no possibility that foreign matter enters the lock hole 50 of the shaft portion 42b. And the appearance also improves.

[0044]

As described above, according to the starting lever of the kick starting device of the present invention, in the kick starting device provided with the starting lever which can be folded through the hinge portion, the base end portion of the starting lever is provided. On the other hand, the fitting hole of the joint member is drilled through, while the bush is fitted in the fitting hole,
Since the joint member is fitted to the bush, the joint member fitting hole can be easily processed, and at the same time, it is possible to provide the starting lever of the kick starter in which abrasion resistance is improved and rattling is suppressed.

Further, since the engaging hole for engaging the means for holding the starting lever in a fixed position is formed in the bush, the inside of the joint member fitting hole can be formed without machining from the outside of the starting end of the starting lever. Locking holes can be formed on the peripheral surface.

[Brief description of 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 the line AA of FIG.

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

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.

6A is a front view of the bush, and FIG. 6B is a front view of 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 that form a conventional hinge portion, and FIG. 7B is a partial cross-sectional view of the hinge portion showing a state in which the starting lever is folded. .

[Explanation of symbols]

20 Motorcycle 23 Engine 32 Kick Starter 33 Starting Lever 34 Starting Lever 34 End Part 35 Hinge Part 36 Kick Shaft 42 Joint Member 42a Connection Part 42b Shaft Part 43 Joint Member Fitting Hole 51 Lock Ball (Holds Starting Lever at Fixed Position) 53 Bushing 56 Lock ball locking hole

Claims (2)

[Claims] 1. A kick starter including a starter lever that is foldable via a hinge part, wherein a fitting hole of a joint member is formed through a base end part of the starter lever.
A starting lever for a kick starting device, wherein a bush is fitted in the fitting hole, and the joint member is fitted in the bush. 2. The starting lever for a kick starting device according to claim 1, wherein said bush has a locking hole for locking means for holding said starting lever in a fixed position.