JPH0629092Y2 - Power transmission switching device for small vehicles - Google Patents

Description

TECHNICAL FIELD The present invention relates to a power transmission switching device capable of manually switching a power transmission path for a small vehicle.

2. Description of the Related Art In a small vehicle such as a motorcycle, a clutch lever for switching a clutch interposed in a power transmission path is generally pivotally mounted near a rod-shaped steering wheel so that the clutch lever can swing. The clutch cable is connected to the clutch with one clutch cable, and when the clutch lever is swung so as to be drawn to the handle grip, the clutch cable is pulled to disconnect the clutch, and the operating force applied to the clutch lever When the clutch is released, the clutch lever is returned to the original state by the spring force of the return spring built into the clutch, and the clutch is returned to the connected state (Japanese Patent Application No. 61-19750 ( See JP-A-62-178440)).

Problems to be Solved by the Invention In such a switching device, when a large force is required to restore the clutch connection, the spring force of the return spring increases, and in the case of the clutch disengagement operation, it is necessary to perform the clutch disengagement operation. The spring force of the spring is added to the operating force to increase the clutch disengagement operating force.

SUMMARY OF THE INVENTION The present invention relates to an improvement of a power transmission switching device for a small vehicle that overcomes the above problems, and a steering bar handle is rotatably provided at a central portion in the front width direction of a vehicle body. A fuel tank or dummy tank and a seat are sequentially arranged behind a steering bar handle, and a step is arranged below both sides of the fuel tank or the dummy tank and the seat. A switching lever is provided on the side of the engine so as to be rotatable around the vehicle width direction between an engine starting position and a vehicle retreating position, and a clutch for switching the power transmission system path from the engine to the drive wheels so that the power transmission system path can be connected or disconnected. The switching lever and the switching lever are connected by a connecting member.

Since the present invention is configured as described above, when the switching lever is turned to the engine starting position, the clutch is switched and the power transmission path from the engine to the drive wheels is cut off, and the engine is started by the starter motor. Is possible.

Further, in the present invention, when the switching lever is turned from the engine starting position to the vehicle retreating position, the clutch is switched to the reverse direction and the power transmission system path from the engine to the driving wheels is connected, whereby the vehicle retreating by the starter motor. Is possible.

Embodiments Embodiments shown in FIGS. 1 to 6 in which the present invention is applied to a motorcycle will be described below.

A shaft support hole 4 is formed concentrically with the shaft end of the output shaft 3 of the cell starter motor 2 arranged near the engine 1,
One end of the starting shaft 6 is relatively rotatably fitted along the same axis as the pivot hole 4, and the starting shaft 6 is rotatably supported by the crankcase 8 via a bearing 9. There is.

A switching gear shaft 11 parallel to the output shaft 3 and the starting shaft 6 is pivotally supported by a crankcase 8 via a bearing 9 so as to be movable in the axial direction and rotatably.
12 is always meshed with the gear 5 of the output shaft 3, and the gears 13 and 14 integrated with the switching gear shaft 11 are fitted into and disengaged from the gear 17 integrated with the drive shaft 16 and the gear 7 integrated with the starting shaft 6. The clutch 10 is freely fitted and configured.

Further, the drive shaft 16 also has the output shaft 3, the starting shaft 6, and the bearing 9 through the bearing 9.
The switching gear shaft 11 is rotatably supported by the crankcase 8 while being oriented parallel to the switching gear shaft 11, and the output gear 19 is fitted to the drive shaft 16.
A damper 18 is interposed between the drive shaft 16 and the output gear 19, and the drive shaft 16 is connected to the rear wheel 20 via a reduction mechanism (not shown) that meshes with the output gear 19.

Furthermore, a sprocket 21 is fitted on the starting shaft 6 via a one-way clutch (not shown), and the sprocket 21 is connected to the engine 1 via a chain (not shown).

In addition, a switch lever is attached to the vehicle body cover 23 below the left side of the tank 22.
A recess 24 for accommodating the 26 is formed, and a stay 27 is fixed to the body frame 25 inside the recess 24.
Two engaging holes 28a and 28b are formed in the stay 27, and a tubular portion 29 is integrally provided in the stay 27.

Further, the pulley 30 is an inner 54 of the cables 53a and 53b described later.
The pulley 30 is provided with binding portions 31a and 31b for binding one ends of the a and 54b, and a through hole 32 is formed in the pulley 30 so as to correspond to the engaging hole 28 of the stay 27, and an end portion of the sleeve 33 integrated with the through hole 32 is formed. Recessed in
34 are formed.

Furthermore, a base 37 is integrally fixed to a boss 35 in which a convex portion 36 that can be engaged with the concave portion 34 of the sleeve 33 is formed, and an undulating pivot support portion 38 is provided on the base 37.

Therefore, the switching lever 26 is composed of a steel lever body 39 and a plastic lever cover 40, and a base 41 of the lever body 39 has an undulating shaft hole that matches the undulating pivot support 38 of the base 37.
42 is provided, and a pin pivot shaft 43 is integrally provided on the left side of the base 41 so as to project.

To assemble the switching operation mechanism 51 with the switching lever 26, the stay 27, the pulley 30, and the boss 35, the following may be done.

Fit the sleeve 33 of the pulley 30 into the tubular portion 29 of the stay 27,
The set screw 45 is fitted into the boss 35, the tip of the set screw 45 is screwed and tightened to the tubular portion 29, and the pivot shaft 46 is passed through the undulating shaft hole 42 of the base 41 and the undulating pivot support 38 of the base 37. In addition, the coil spring 47 is wound around the pivot shaft 46, the nut 48 is screwed to the tip screw portion of the pivot shaft 46, and the engaging hole 28 is passed through the through hole 32 of the pulley 30.
The top of the pin 49 that engages with either a or 28b may be fitted to the pin pivot shaft 43 of the base 41, and the nut 50 may be screwed onto the pin pivot shaft 43.

The stay 27 is provided with a cable holder 52 so that the outer ends 55a and 55b of the cables 53a and 53b can be gripped.

The other ends of the inner portions 54a, 54b of the cables 53a, 53b are connected to the connecting portions 57a, 57b of the pulley 56, and locking protrusions 58 are provided on the side surfaces of the pulley 56.

Further, the swivel arm 59 is provided with a groove 60 into which the locking projection 58 can be loosely fitted, and a locking projection 61 is provided on the outside thereof.
A gear 62 is attached integrally with the swivel arm 59, and the swivel arm 5
9, the coil spring 65 is fitted to the bolt 63 penetrating the gear 62 via the collar 64, and the tip of the bolt 63 is the pulley 56.
The coil spring 65 is screwed to the crankcase 8, and both ends of the coil spring 65 sandwich the locking protrusion 58 and the locking protrusion 61. Due to the elastic deformation of the coil spring 65, the pulley 56 and the turning arm 59 are relatively moved. The rotating arm 59 is capable of performing a lost motion following the rotation of the pulley 56 due to its spring force.

Furthermore, a reverse arm 67 is attached integrally with a gear 66 pivotally attached to the crankcase 8 so as to mesh with the gear 62.
The engagement pin 68 at the tip of the reverse arm 67 is the switching gear shaft 11
Is engaged with the engaging groove 15 of.

Moreover, the reverse gear switch 69 is arranged closer to the cell starter motor 2 than the reverse arm 67, and the pulley 30
A protrusion 70 is provided on the bottom of the switching lever 26.
A reverse operation detection limit switch 71 is provided which is turned on when pushed by 70 and pulled up by the switching lever 26.

Since the embodiment shown in FIGS. 1 to 6 is configured as described above, when the switching lever 26 is lowered, the pin 49 is engaged with the engaging hole 28a and the switching lever 26 is engaged. The upper and lower switching operations cannot be performed.
In this state, the reverse arm 67 occupies the position shown by the solid line in FIG. 2, the switching gear shaft 11 is moved to the left, and the gear 13 of the switching gear shaft 11 is disengaged from the gear 17 of the drive shaft 16. Since the gear 14 of the switching gear shaft 11 is meshed with the gear 7 of the starting shaft 6, the sprocket 21 of the starting shaft 6 is rotated as the cell starter motor 2 is operated, and the engine 1
Is cranked.

When the engine 1 is started, the rotational torque from the engine 1 is cut off by the not-shown one-way clutch built in the sprocket 21 from the engine 1 to the cell starter motor 2, and the cell starter motor 2
Is not forcibly rotationally driven by the engine 1.

Next, when the switching lever 26 is lowered downward and the engine 1 and the cell starter motor 2 are stopped, when the switching lever 26 is pulled to the left side, the switching lever 26 is raised around the pivot 46, and accordingly. Since the pin 49 is pulled out to the side and the pin 49 is disengaged from the engagement hole 28a of the stay 27, the switching lever 26 can be turned.

When the switching lever 26 is pulled outward in this way, when the switching lever 26 is pulled upward, the pulley 30 is rotated together with the switching lever 26 in the clockwise direction in FIG. Since the inner 54a is pulled,
The pulley 56 is also swung clockwise in FIGS. 2 and 6, and the reverse arm 67 is swung counterclockwise to move to the position 2 in FIG.
The switching gear shaft 11 is moved to the right, occupying the position shown by the chain line, and the gear 14 previously meshed with the gear 7 is disengaged, and the gear 13 of the switching gear shaft 11 is the gear of the drive shaft 16.
Meshed with 17.

When the switching lever 26 is pulled upward, the reverse operation detection limit switch 71 is turned on, and when the switching lever 26 is tilted to the vehicle body, the pin 49 is fitted into the engagement hole 28b, and the switching lever 26 and the pulley 30 cannot turn. .

Therefore, when the cell starter motor 2 is operated in this state, the drive shaft 16 is driven in the backward direction, the rear wheels 20 are reversed, and the motorcycle is moved backward.

When the switching lever 26 is pivoted to an intermediate position between the upper limit and the lower limit, the pin 49 is not fitted in either the engaging hole 28a or the engaging hole 28b, so that the tip of the pin 49 stays.
It is possible to hit the side of 27 and push the switching lever 26 toward the vehicle body. Therefore, the cell starter motor 2 is not operated while the switching lever 26 is being operated halfway.

Further, since the switching operation mechanism 51 is capable of lost motion, when the switching lever 26 is switched to the upper limit or the lower limit, the crest of the gear 14 of the switching gear shaft 11 and the starting shaft 6 are changed.
Even if the crest of the gear 7 of the drive shaft 16 or the crest of the gear 13 of the switching gear shaft 11 abuts against the crest of the gear 17 of the drive shaft 16 so that the gear 14 does not mesh with the gear 7 or the gear 13 does not mesh with the gear 17, When the motor 2 becomes rotatable and the gears 14 and 13 slightly rotate, the reverse arm 67 is swung by the spring force of the coil spring 65 and the switching gear shaft 11 is pushed leftward or rightward. Gear 14 is gear 7 or gear 13 is gear 17
And the clutch switching operation is effectively performed.

Further, when the switching lever 26 is operated upward or downward, the inner 54a of the cable 53a or the cable 53b.
Since the inner 54b of the switch 54 is pulled, the operating force of the switching lever 26 is effectively transmitted to the pulley 56.

As described above, in the present embodiment, when one of the two flexible connecting members connecting the clutch and the switching lever is turned and the other is turned, the pulling force is pulled. Since it is in the state, the switching operation force of the switching lever is effectively transmitted to the clutch.

Therefore, it is possible to quickly and effectively connect and disconnect the clutch.

Moreover, since the spring force of the return spring is not required, the operating force required to operate the switching lever is greatly reduced.

As described above, according to the present invention, the steering bar handle is rotatably provided at the central portion in the front width direction of the vehicle body, and the fuel tank or the dummy tank and the seat are sequentially arranged behind the steering bar handle. In a small-sized vehicle in which steps are provided below both sides of the fuel tank or dummy tank and the seat, turning around the vehicle width direction between the engine start position and the vehicle retreat position laterally of the fuel tank or dummy tank Since the switching lever is freely arranged, the driver can very easily switch the switching lever between the engine starting position and the vehicle retreating position with one hand while straddling the vehicle, and the engine starting and the vehicle retreating can be achieved. It can be done easily.

[Brief description of drawings]

FIG. 1 is a side view of a motorcycle equipped with a power transmission switching device for a small vehicle according to the present invention, FIG. 2 is a longitudinal side view of an essential part of an embodiment of the present invention, and FIG. Partially cutaway side view, FIG. 4 is its exploded perspective view, FIG. 5 is a longitudinal sectional view taken along the line VV of FIG. 3, and FIG. 6 is an exploded perspective view of essential parts of FIG. Is. 1 ... Engine, 2 ... Cell starter motor, 3 ... Output shaft, 4 ... Pivot hole, 5 ... Gear, 6 ... Starting shaft, 7 ...
… Gear, 8 …… Crankcase, 9 …… Bearing, 10 …… Clutch, 11 …… Switching gear shaft, 12, 13, 14 …… Gear, 15
...... Engagement groove, 16 …… Drive shaft, 17 …… Gear, 18 …… Damper, 19 …… Output gear, 20 …… Rear wheel, 21 …… Sprocket, 22 …… Tank, 23 …… Body cover, 24 ... recess, 25
...... Body frame, 26 ...... Switching lever, 27 ...... Stay, 28 ...... Engagement hole, 29 ...... Cylindrical part, 30 ...... Pulley, 31 ...
… Binding part, 32 …… Through hole, 33 …… Sleeve, 34 …… Concave, 35 …… Boss, 36 …… Convex part, 37 …… Base, 38 …… Elevating pivot support part, 39 …… Lever body, 40 …… Lever cover, 41
…… Base, 42 …… undulation shaft hole, 43 …… pin pivot shaft, 45 ……
Set screw, 46 …… Axis, 47 …… Coil spring, 48 ……
Nuts, 49 ... pins, 50 ... nuts, 51 ... switching mechanism, 52 ... cable holders, 53 ... cables, 54 ...
… Inner, 55 …… Outer, 56 …… Pulley, 57 …… Binding part, 58 …… Locking protrusion, 59 …… Swivel arm, 60 …… Groove,
61 …… Locking protrusion, 62 …… Gear, 63 …… Bolt, 64 …… Collar, 65 …… Coil spring, 66 …… Gear, 67 …… Reverse arm, 68 …… Engagement pin, 69 …… Reverse Gear switch, 70 ... Protrusion, 71 ... Reverse operation detection limit switch.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takaaki Tada 1-4-1 Chuo, Wako City, Saitama Prefectural Research Institute of Honda R & D Co., Ltd. (72) Inventor Koji Terada 1-4-1 Wako, Saitama Prefecture Stock Company Honda Technical Research Institute

Claims (2)

[Scope of utility model registration request] 1. A steering bar handle is rotatably provided at a central portion in the front width direction of a vehicle body, and a fuel tank or a dummy tank and a seat are sequentially arranged behind the steering bar handle, and the fuel tank or the dummy tank. In a small vehicle in which steps are arranged below both sides of the seat, a switching lever is arranged laterally of the fuel tank or the dummy tank so as to be rotatable around the vehicle width direction between the engine starting position and the vehicle retreating position. A power transmission switching device for a small vehicle, characterized in that a clutch for switching between a power transmission path from an engine to a drive wheel is freely connected and disconnected and the switching lever is connected by a connecting member. 2. The power transmission switching device for a small vehicle according to claim 1, wherein the connecting member is a member capable of switching between forward and reverse in a tensioned state.