JPS6081523A - Clutch of mobile working machine - Google Patents

Abstract

PURPOSE:To enable to make clutch operation through either side, by a method wherein a main clutch lever is hinged on a right and left hand grip parts, through operation of one side of which a main clutch is engaged and both grip parts are made to interlock with each other so that the one side does not interfere with the other side. CONSTITUTION:When a left side main clutch lever 19 is grasped, the lever 19 is rocked centering around a shaft 17, a connecting piece 23 which is unified with the lever 19 is moved rearward, an arm 20 is rocked in the same direction also centering around the shaft 17 in connection with the above matter, which resulted in pulling of a cable 22 and a main clutch is engaged. In this instance, although the other side arm 120 is rocked also unitarily with the shaft 17 in the same direction, as rocking of this side is the rocking in the direction separating from a connecting piece 123 of the other side lever 119, the connecting piece 123 does not interfere with the lever 119 and the lever 119 is remained at a disengagement position. In case engagement operation of the main clutch is carried out by the right side lever 119, the lever 119 is in the disengagement position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a clutch device used in a mobile working machine such as a tiller.

A clutch device for a tiller consists of a main clutch that turns on and off the transmission of engine power to the wheels, and a side clutch that turns off the transmission of power to the left and right wheels by individual operations.

The lever for turning off the side clutch is installed adjacent to the left and right grips of the handlebar, and by grasping and swinging either lever, the clutch on this side is turned off, and power is transmitted to the wheels on the other side. turn off and change direction.

On the other hand, the main clutch is installed near one of the grips or at a distance from it, and there is only one lever for operating the main clutch, and its function remains on or off unless switched. That is, it continues to be in the on state or off state unless a switching operation is input, and if it is put into either state and released, it will maintain that state.

Since the conventional main clutch lever mentioned above is located in the - position, it is necessary to grasp the handle grip with one hand and switch the clutch lever with the other hand, and switching can be performed with only one hand. Improvements are important in terms of operability! - Next, the operation of the main clutch lever requires a sense of moderation, and the switching is done consciously and with a considerable amount of operating force, so it is possible to quickly switch the clutch lever, for example, quickly turn off the power from the running state and drive. There is room for improvement, as it takes time to switch when it is desired to stop the system, making it difficult to switch quickly.

The present invention has been developed in view of the above, and its purpose is to easily and reliably operate the main clutch lever with one hand, even when the handle grip is tilted to the left or right, and with a slightly heavy operating load. It is an object of the present invention to provide a clutch device for a mobile working machine that can facilitate turning and direction change operations, improve operability, and quickly turn off and on the clutch.

In order to achieve the above object, the present invention provides a main clutch lever that is pivotally mounted on each of the left and right non-ddle grips, one of the clutch levers is connected to the main clutch, and each clutch lever can be operated by one of the clutch levers. The gist is that the main clutch is turned on and that both levers are interlocked so as to avoid interference with the other lever.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic side view of a V1 rotary machine 1 as an example of a mobile working machine, in which an engine 3 is mounted on the front part of the machine body 2, and in the embodiment, a fuel tank 4 is arranged on top of this. Wheels 6 are provided at the rear lower part or on the left and right sides of the duction case part 5, and a handle column 7 is provided extending above the rear part of the fuselage 2, to the rear of which the bases of the left and right handlebars 8 are tied. The inner part 9 is a cover that covers the belt that connects the engine coupler and the input boolean of the reduction section, as well as the main clutch mechanism that adjusts the belt tension to turn on and off power transmission to the wheels.

Handle grips 10 and 10 are provided at the end portions of the left and right handlebars 8A and 8B, and each handle grip 1
A side clutch lever and a main clutch lever are provided in the vicinity of 0.10, the details of which are shown in FIGS. 2 to 4.

FIG. 2 shows the left handle grip part, and FIG. 3 shows the right handle grip part.The side clutch levers 12, 112 are pivoted to the first plackets (ILllll) hanging downwardly in front of each grip 10,10. Arrival: 13,113
L, the levers 12, 112 are disposed below the grip 10.10, and the cables 14, 1 are placed on the levers 12, 112 side.
14 inner 14a, 114a to fico 15, 115
and the outer 14b.

114b is fastened to the brackets ii and iii via the metal fittings 14c and 114c, and the inners 14a and 1
14a is connected to a side clutch (not shown).

In the above, the side clutch levers 12, 112 turn on the clutches of the left and right wheels 6 in the open state in which they are lowered as shown in the figure, thereby transmitting power to the left and right wheels, thereby causing the tiller 1 to travel straight. .

By tilting one of the side clutch levers 12 and 112, the lever 12 or 112 is moved to the pivot portion 13.
, or swings in the direction of the grip 10 using 113 as a fulcrum, and as a result, the cable inner 14a1 or 114a is pulled, and the left and right clutches are turned off, power transmission to the wheels on this side is turned off, and the other side is turned off. The wheels of the aircraft are driven, and therefore the aircraft turns around the stopped side, that is, changes direction (1st bracket above) 11, 111
A second bracket 16, 116 is provided hanging down in front of the bracket 16, 116, and the bracket 16, 116 has a plate shape as shown in FIG. Cylindrical bearing portions 16a, 116a projecting outward are provided at the middle lower portion of the bracket 16°116, respectively, and the bearing portions 16a are spaced apart from each other to the left and right.

The interlocking shaft 17 is rotatably inserted and supported between the collars 116a via collars 18.18.

The left and right main clutch levers 19a11 are attached to the shaft 17.
Supports 9. The levers 19 and 119 have substantially inverted sides as shown in FIGS. 2 and 3, and have hanging bases 19a and 1.
19a has a bifurcated shape, with left and right side pieces 19b and 19c.

119b, 119c... The handle parts 19d, 119d, which extend rearward from the upper part of the base parts 19a, 119a, straddle the handlebars 8A, 8B, and have an inverted channel cross section, and extend from the upper end of the base to the J handle part. Top piece 19e that extends to the rear end
, 119e, and is formed of a press-formed steel plate or the like. The left and right side pieces 19b of the above left and right levers 19, 119
, 19c.

Collar or ring-shaped cylindrical boss portions 19f, 19q, 119 are provided at the proximal ends of 119b and 119c, respectively.
f, 119q are fixed and rotatably fitted to both ends of the shaft 17 described above, and the boss portions 19f, 19q and 119
f, 119 (between 7 and 7, there is a collar 18° 18 that supports the bearing portions 16a, 116a mentioned above on the shaft).

As for the above boss parts, the outer ones 19f and 119f are long, the inner ones 19c+1199 are short, and the inner boss parts 19q+119q on the shaft 11 and the boss parts j6a and 116
Cylindrical boss portions 20a, 1 of actuating arms 20, 120 between a
20a, and the boss portions 20a and 120a are connected to the pin 2.
1.21 to the shaft 17. The arms 20, 120 are the brackets 16, 116, the bases 19a, and the inner side pieces 19c of 119a.

On the other hand, for example, the end portion 22a of the cable 22 is connected to the bifurcated tip 20b of the right arm 2°, and the cable 22 is connected to a main clutch (not shown), and the pulling motion of the cable 22 The configuration is such that the main clutch is turned on, and in FIG. 2, the lever 19 is released and the lever 19 is
The grip portion 19d is separated from the grip 10, indicating the main clutch off state. FIG. 3 shows the other lever in a similar situation, with the arm 120 on this side not having any connection to the cable.

A retaining piece 23 is provided on the inside of the front end of the inner side pieces 19c, 119c of the left and right levers 19, 119 near the arms 20, 120.
The retaining pieces 23, 123 are arranged so as to face the front edges of the arms 20, 120. A return spring 24.124 such as a torsion spring is interposed on the outer periphery of the boss between the outer side pieces 19b, 119b and the bracket 16.116.
4, one end 24a, 124a of side piece 19b, 119b
In addition, the other ends 24b and 124b are connected to the brackets 16 and 11.
6 respectively, thereby urging the levers 19, 119 to the open side.The opening limit of the bars 19, 119 is the top piece 1.
The front ends 19h, 119h of the handlebars 9e, 119e are regulated by coming into contact with the tops of the outer peripheries of the handlebars 8A, 8B. In the drawing, 25 is a cover pipe provided to cover the middle part of the shaft 17.

Next, the operation and effect will be described in detail. For example, the left main clutch lever 19 is held in place to bring the grip portion 19d closer to the grip 10 and maintain the grip state. In this case, if you place the pads of your fingers other than the thumb under the grip 10, place your palm on the grip part 19d and press down, the lever 19 will be moved to the shaft 17.
The retaining piece 23, which is integrated with the lever 19 and which is easy to operate, moves rearward, and the arm 20 collides with the lever 19, swinging clockwise in FIG. It swings in the same direction as a fulcrum, and as a result, the cable 22 is pulled and the main clutch is turned on. Therefore, the engine output is transmitted to the wheels, and the vehicle travels.
The arm 120 on the other side also pivots in the same direction as the shaft 17, and the arm 120 on the other side also pivots in the same direction as the shaft 17. side lever 119
Since the swing is in the direction away from the engaging piece 123, there is no interference with the lever 119, and the lever 119 remains in the off position as shown in FIG. Therefore, even when the handle grip on this side is held in place, the lever 119 does not move even when the lever 19 on the other side is operated, so it does not interfere with the hand.

On the other hand, when the main clutch is turned on using the lever 119 on the right side, if the left side lever 119 is held with the hand off the grip or with the grip held, the swing will cause the arm 120 to move the engagement piece 123. The shaft 17 is rotated, the aforementioned arm 20 integral with the shaft 17 is swung, the cable 22 is pulled, and the main clutch is turned on. In this way, the main clutch can be turned on by gripping and operating the right lever; in this case, the left lever 19 is in the open position as shown in FIG. 2, and only the arm 20 moves. In this way, the left and right leno<-19.11
The main clutch can be turned on by either tilting the main clutch levers 19 or 119 or by gripping one of them. Possibly the return spring 24, 124
Due to either of these actions, either Leno<-19 or 119 returns, the arm 20 or 120 returns, and the main clutch is immediately turned off, power transmission to the wheels is cut off, and the vehicle stops running.

In this way, the main clutch is quickly turned off. By the way, when operating the side clutch lever, if it is on the open side, use the hand on this side to operate the side clutch lever 12 or 1.
This is done by holding the main clutch lever 19 or 119, and on the side where the main clutch lever 19 or 119 is held, all you need to do is to extend your fingers other than the thumb and grasp the lever 12 or 112.
It is easy to operate, and when changing direction to the side where the main clutch lever 19 or 119 is gripped, the lever 12 or 112 can be operated with one hand while keeping the other hand released. Therefore, the direction change operation by operating the side clutch lever can be performed extremely easily.

As is clear from the above, according to the present invention, the main clutch can be operated with either the left or right handle grip, and the operability is significantly improved.Moreover, the non-operating side is unrelated to the operation, which is advantageous in terms of operation, and the main clutch can be operated with one hand. It is easy to operate, and the operation of the side clutch is as easy as tilting, making it easier to turn and change directions.Since it is a grip type, the main clutch is immediately turned off when the main clutch lever on the holding side is released. It has many advantages such as being able to quickly stop the power tiller and the like.

[Brief explanation of the drawing]

Figure 1 is a side view of the cultivator, Figure 2 is a side view of one side of the power tiller with the main parts broken away, Figure 3 is a side view of the other side, and Figure 4 is a side view of the power tiller. It is an explanatory sectional view of four lines. In addition, in the drawing, 1 is a mobile working machine, 6 is a wheel, 8 is a nondle, 1
0 is the grip, 19,119 is the main clutch lever 1
17, 20, 120, 21, 121, 23, and 123 are interlocking devices. Patent Applicant Honda Motor Co., Ltd. Agent Patent Attorney 2 1) Production Department Patent Attorney Kuni Ohashi Production Volume Patent Attorney Jun Koyama

Claims (1)

[Claims] In a mobile work machine equipped with a main clutch that turns on and off transmission of power to wheels, a main clutch lever that turns on and off the main clutch is provided on each of the left and right grips of the handle, and the main clutch lever - is connected to the main clutch, and an interlocking device is provided to connect the left and right clutch levers and the main clutch, so that the input from one main clutch lever is not output to the other main clutch lever. Clutch device 0 for a mobile work machine characterized by