JPH08218988A - Walking type working vehicle - Google Patents

Abstract

PURPOSE: To provide a walking type working vehicle capable of starting an engine while preventing the movement of a machine body for starting the engine even with a traveling clutch ON. CONSTITUTION: When a cable 13 for starting a coil starter is pulled with a traveling clutch 7 kept ON, the cable 13 is pressed to the connecting stick 22d of a swing body 22 to rotate the swing body 22 around a supporting shaft 21. Then, the swing link 22a of the swing body 22 pulls and operates a second link cable 25 and working on the link arm section 9b of a clutch lever 9, the second link cable 25 switches the clutch lever 9 from a clutch ON position to a clutch OFF position. Thus, the traveling clutch 7 is automatically switched from ON to OFF and the coil starter starts the engine while preventing the transmission of an engine output to traveling wheels.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recoil starter device for an engine and a walk-behind work vehicle having a traveling clutch.

[0002]

2. Description of the Related Art In the above-mentioned walk-behind work vehicle, the engine can be conventionally started even if the traveling clutch is in the clutch state. When the engine is started, the traveling clutch is not operated before the starting operation. By confirming that was turned off, it was designed to prevent the aircraft from moving at the same time when the engine started.

[0003]

Conventionally, when starting an engine, it has been necessary to take troublesome work to know whether the clutch for driving is disengaged by checking whether the clutch operating lever is in the engaged position. Was there. Also,
When the clutch operating lever is in the on position, the starting cable cannot be pulled and operated close to the operation part of the recoil starter device.If the traveling clutch is in the clutch, the engine cannot be started and the vehicle will run. It is conceivable that the engine can be started only after the vehicle clutch is switched to the clutch disengagement. In this case, however, it takes time and effort to switch the traveling clutch before starting the engine. An object of the present invention is to provide a walk-behind work vehicle capable of starting the engine easily and quickly while preventing the machine body from moving.

[0004]

In the walk-behind work vehicle according to the present invention, in order to achieve the object, the recoil starter device for an engine is interlocked with a running clutch so that the recoil starter device is provided on the engine starting side. It is characterized in that it is provided with an interlocking mechanism for automatically switching the traveling clutch from the clutch engaged state to the clutch disengaged state in accordance with the above operation.

[0005]

When the recoil starter device is operated, the clutch is automatically switched to the clutch disengagement due to the automatic operation of the interlocking mechanism associated with the operation of the starter device, even if the running clutch is engaged. The starter device starts the engine with the transmission cut off.

According to the second aspect of the present invention, the interlocking mechanism performs the control operation and the clutch operation operation by using the pulling force of the starting cable as power to automatically switch the traveling clutch.

According to the third aspect of the present invention, the interlocking mechanism switches the traveling clutch by switching the operating lever. That is, the traveling clutch is switched while the traveling clutch is switched from the disengaged state to the engaged state when the engine is started only by switching the operating lever from the clutch disengaged position to the engaged position after the engine is started.

[0008]

As the interlocking mechanism automatically disengages the traveling clutch, it becomes possible to start the engine while preventing the body from moving even when the engine is started. Moreover, it is possible to easily and quickly start the vehicle without confirming that the traveling clutch is disengaged prior to starting or disengaging the traveling clutch to enable the starting operation. It was

According to the present invention, the cable tension, which is the operating force of the recoil starter device, is used as the power source for the interlocking mechanism, so that the interlocking mechanism can be controlled and the traveling clutch can be switched by the interlocking mechanism. It is advantageous in terms of cost, etc. that the interlocking mechanism can be simply obtained and the engine can be started as desired without equipping a special dedicated power source for doing so.

According to the third aspect of the present invention, since the operating lever of the traveling clutch is in the clutch disengaged position when the engine is started, the operating lever is once moved from the clutch engaged position to the clutch disengaged position after the engine is started. Even if you do not perform the lever reciprocating operation to switch to the clutch engaged position again after switching to, you can quickly switch the clutch for traveling from disengagement at engine start to engagement simply by performing the lever forward operation to switch from the clutch disengagement position to the engagement position. You will be able to run the aircraft.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a pair of left and right traveling wheels 1, 1, a transmission case 2 supporting the traveling wheels 1, an engine E for driving the traveling wheels 1, a steering handle 3 and the like. At the rear part of the self-propelled aircraft, the hitch 4 for connecting the working device is provided to form a walking type management machine. That is, for example, as shown in the same figure, the rotary tiller 5 is connected to the rear part of the airframe, and the transmission case 6 transmits the engine output to the rotary tiller 5 by the transmission case 6. The cultivator can be configured.

The output of the engine E is a main clutch 7 made up of a belt tension clutch that connects and disconnects the power transmitted from the engine E to the mission case 2 to enable driving and stopping operations of the left and right wheels 1, 1 and the connecting work device. Provided between the input section of the transmission case 2 and the input section of the transmission case 2, and an operation cable 8 is provided on an operation arm section (not shown) of the main clutch 7.
A clutch operating device provided with a clutch lever 9 that is interlocked with the steering handle 3 is mounted on the rear end side portion of the steering handle 3 and configured as shown in FIG.

That is, the clutch lever 9 is swingably supported by the steering handle 3 via the lever support shaft 10 and integrally extends from the boss portion of the clutch lever 9 so that the clutch lever 9 can be integrally rotated. The portion 9a is connected to the operation cable 8 via an arc-shaped connecting rod 11 that is connected to the arm portion 9a so as to rotate about an axis parallel to the support shaft 10. When the clutch lever 9 is swung in the longitudinal direction of the machine about the axial center 10a of the lever support shaft 10 in the lateral direction of the machine to move to the clutch engaged position shown in FIG. 2A, the connecting arm portion 9a causes the connecting rod 11 to move. Is pulled toward the rear side of the machine to pull the operation cable 8, and the operation cable 8 switches the operation arm portion of the main clutch 7 to the clutch engagement side. At this time, the connecting rod 11
By this action, the clutch lever 9 is held in the clutch engaged position against the self-restoring force of the main clutch 7 to the clutch disengagement, and the main clutch 7 maintains the clutch engaged state. When the clutch lever 9 is swung from the clutch engaged position to the rear side of the machine body and switched to the clutch disengaged position shown in FIG. 2B, the connecting arm portion 9a moves the connecting rod 11 to the front side of the machine body. When the operation cable 8 is loosened, the operation arm portion of the main clutch 7 is switched to the clutch disengaged position by the self-restoring force of the main clutch 7.

That is, the main clutch 7 can be switched by swinging the clutch lever 9 around the axis 10a, and the main clutch 7 connects and disconnects the transmission from the engine E to the left and right wheels 1, 1. It serves as a clutch. By operating the clutch lever 9 to the clutch engagement position, the traveling operation of the machine body is performed, and by operating the clutch lever 9 to the clutch disengagement position, the traveling operation of the machine body is performed.

A recoil starter device 12 for starting the engine E is attached to the engine E, and as shown in FIG.
An operation in which the starting cable 13 of the starter device 12 is extended to the rear side of the machine body, and the starting operation tool 14 located at the end of the starting cable 13 is attached near the clutch lever 9 of the steering handle 3. Tool holder 1
5 is supported. Support shaft 21 provided in the steering wheel 3
A pair of swing links 22a, 22 rotatably attached to the
rocker 22 provided with b, rocking link 2 of rocker 22
The first interlocking structure configured to interlock the swinging body 22 with the clutch lever 9 by connecting the tension coil spring 23 and the swinging link 22a of the swinging body 22 mounted on the control handle 3 to the coupling rod 11. By connecting the rocking link 22a of the rocking body 22 to the interlocking arm 9b of the clutch lever 9 that extends integrally rotatably from the cable 24 and the boss portion of the clutch lever 9, the rocking body 20 is attached to the clutch lever 9. Each of the second interlocking cables 25 configured to interlock with each other constitutes an interlocking mechanism 20 for interlocking the recoil starter device 12 with the main clutch 7. The rocking body 22 includes a pair of rocking links 22a and 22b and both rocking links 22a and 22b.
And a swinging link 22a, 2 which is connected to the supporting shaft 21 and is pivotally mounted on the supporting shaft 21.
Even if the main clutch 7 is engaged, it is configured by each of the connecting bodies 22d that connect the free end sides of the 2b and is configured to operate as shown in FIGS. 2 and 3. The interlocking mechanism 20 makes it possible to start the engine E while automatically switching it off.

That is, the oscillating body 22 normally has the structure shown in FIG.
As shown in (a) and FIG. 3, one swing link 22
The swing link 22b is in the first mounting posture in which the swing link 22b abuts on the first stopper 26 for swinging operation by the pulling force of the tension coil spring 23 acting on b, and the mounting cylinder 22c and the connecting rod 22d are started. The cable 13 is wrapped around. At this time, if the starting operation tool 14 is still attached to the operation tool holder 15, the clutch lever 9
Even when is switched between the clutch engaged position and the clutch disengaged position, the first and second interlocking cables 24 and 25 are in a tension state in which the rocking body 22 is not rocked against the coil spring 23. The oscillating body 22 maintains the first mounting posture only by switching to the loosened state. As shown in FIG. 2A, when the swinging body 22 is in the first mounting posture and the clutch lever 9 is in the clutch engaged position, when the starter operation tool 14 pulls the starter cable 13 to the rear side of the body, The cable 13 is shown in FIG.
As shown in (a), the oscillating body 22 is urged against the coil spring 23 in the rotational direction A shown in FIG. To operate. As the oscillating body 22 oscillates, the connection point of the coil spring 23 in the oscillating link 22b and the oscillating axis of the oscillating link 22b and the coil spring 23.
When the dead point located on the imaginary straight line connecting with the support point of the steering handle 3 is crossed in the turning direction A, the coil spring 23 then moves in the opposite direction to the swing link 22b. The swinging operation is performed in the rotation direction A of. Then, due to the swinging operation by the pulling force of the coil spring 23, the swinging body 22 is switched to the second mounting posture in which the swinging link 22b is in contact with the second stopper 27, as shown in FIG. The starting cable 13 enables the recoil starter device 12 to be operated, and also pulls the second interlocking cable 25. Therefore, the second interlocking cable 25 acts on the interlocking arm portion 9b to switch the clutch lever 9 from the clutch engaged position to the clutch disengaged position. When the clutch lever 9 is switched from the clutch disengaged position to the clutch engaged position when the oscillating body 22 is in the second mounting posture, the connecting rod 11 moves the oscillating body 22 through the first interlocking cable 24 as shown in FIG. The swinging operation is performed against the coil spring 23 in the rotation direction B shown in FIG. When the connecting point of the coil spring 23 in the swing link 22b exceeds the dead point in the turning direction B as the swing body 22 swings, the coil spring 23 then moves relative to the swing link 22b. Oscillates in a rotation direction B opposite to the above. Then, due to the swinging operation by the pulling force of the coil spring 23, as shown in FIG.
As shown in FIG. 5, the swinging body 22 is switched to the first mounting posture, the starting cable 13 is wound around the mounting cylinder 22c and the connecting rod 22d, and then the swinging body 22 is pulled when the starting cable 13 is pulled. Rotates in the rotation direction A, and the second interlocking cable 25 enables the clutch lever 9 to be switched from the clutch engaged position to the clutch disengaged position.

That is, when the engine E is started, the starting operation tool 14 is removed from the operation tool holder 15 and pulled to the rear side of the machine body to pull the starting cable 8. At this time, when the main clutch 7 is disengaged, the rocking body 22 moves to the starting cable 13
The second interlocking cable 25 does not act on the clutch lever 9 even if the tension is changed from the first mounting posture to the second mounting posture. Therefore, the interlocking mechanism 2
0 does not act and keeps the main clutch 7 in the disengaged position by leaving the clutch lever 9 in the clutch disengaged position. Then, since the starting cable 13 transmits the starting operation force to the recoil starter device 12, the recoil starter device 12 operates to start the engine E. On the other hand, when the main clutch 7 is engaged, the oscillating body 22 is switched from the first mounting posture to the second mounting posture by the tension of the starting cable 13, and the second interlocking cable 25 clutches the clutch lever 9. Switch from the on position to the clutch off position. That is, the interlocking mechanism 2
No. 0 takes in the cable tension as an operating force from the starting cable 13 by the oscillating body 22, and the second interlocking cable 25
The cable tension is transmitted to the second interlocking arm portion 9b as an operating force to switch the clutch lever 9 from the clutch engaged position to the clutch disengaged position.
Automatically switches from on to off. Then, the starting cable 13 transmits the starting operation force to the recoil starter device 12 while swinging the rocking body 22, so that the recoil starter device 12 operates to start the engine E.

After the engine E is started, the clutch lever 9 is switched from the clutch disengaged position to the clutch engaged position, whereby the main clutch 9 is switched from disengaged to engaged, and the left and right traveling wheels 1, 1 and the rotary. The engine output is transmitted to the connecting work device such as the cultivator 5, so that the traveling of the machine body and the work by the connecting work device can be performed. Then, even when the engine starting operation is performed while the main clutch 7 is in the engaged state, when the clutch lever 9 is subsequently switched to the clutch engaged position,
The oscillating body 22 of the interlocking mechanism 20 is automatically switched from the second mounting posture to the first mounting posture because of interlocking with the clutch lever 9 by the first interlocking cable 24,
The interlocking mechanism 20 then enables automatic switching of the main clutch 7.

An accelerator operating device having an accelerator lever 31 which is interlocked with an accelerator device (not shown) of the engine E via an operating cable 30 is mounted near the grip portion of the control handle 3 and shown in FIG. It is configured as shown.

That is, the accelerator lever 31 is attached to the base member 32 fixed to the steering handlebar 3 by the cover 3
It is attached to the mounting screw of No. 3 so as to be rotated by a lever support shaft 34 which is also used. The disc spring 35 disposed between the base of the accelerator lever 31 and the cover 33 is pressed against the base of the accelerator lever 31 by the tightening force of the lever support shaft 34 to elastically deform, and the elastic restoring force of the disc spring 35 causes the accelerator lever 31 to move. The base portion of (1) is pressed against the lever receiving portion 32a of the base member 32 to generate a frictional force between the accelerator lever 31 and the base member 32. A positioning ball 36 is attached to the base of the accelerator lever 31 so as to move together with the accelerator lever 31 with respect to the base member 32, and the positioning ball 36 is a through hole of the base member 32 by rocking the accelerator lever 31. The accelerator lever 31 is configured to be at the idling position AI when entering the recessed portion 32b.

That is, when the accelerator lever 31 is rocked around the axis of the lever support shaft 34, the accelerator lever 3
1 operates the inner cable 30I of the operation cable 30 by pulling or loosening the inner peripheral surface 32c of the lever receiving portion 32a of the base member 32 as a cable guide along the cylindrical outer peripheral surface 32c. Idling state, and
It is possible to switch to a speed range for traveling that is faster than idling. When the vehicle is operated in the traveling speed range or the gear is changed in the traveling speed range, friction between the accelerator lever 31 and the base member 32 causes the accelerator lever 31 to restore itself to the engine stop state of the accelerator device. Against the force of holding the accelerator device in a predetermined operating position, thereby maintaining the accelerator device in a predetermined operating state. Further, when the accelerator device is operated in the idling state, the positioning ball 36
Enters the positioning recess 32b and locks with the base member 31, thereby holding the accelerator lever 31 at the idling position AI against the self-restoring force of the accelerator device, thereby maintaining the accelerator device in the idling state. . In this case, when the accelerator lever 31 reaches the idling position AI, this is determined by the positioning ball 36.
It can be recognized by entering the positioning recessed portion 32b. Moreover, the accelerator lever 31 is moved to the idling position A.
The positioning ball 36 is disengaged from the positioning recessed portion 32b only by swinging in a predetermined direction from I, and the accelerator lever 31 moves to the traveling side or the engine stop side. For this reason, when the accelerator lever is operated to the idling position, the stopper acts to recognize the arrival at the idling position, and by swinging the accelerator lever while manually releasing the stopper, the accelerator lever moves from the idling position. Compared with the case of moving to a predetermined running side or engine stop side, special means for releasing the means for recognizing that the accelerator lever has reached the idling position so that the accelerator lever can move It is easy to operate without requiring any troublesome switching, and the accelerator lever is quickly switched to the traveling side or the engine stop side, so that traveling of the machine or driving of the connected working device can be quickly enabled or stopped.

A pair of steering clutches (not shown) configured to change the traveling direction of the airframe by separately driving the pair of left and right traveling wheels 1 and 1 are installed inside the mission case 2. As shown in FIGS. 5 and 6, a clutch operation arm 41a or 41b integrally rotatably attached to the rotation operation shaft 40a or 40b of each of the pair of steering clutches is arranged outside the mission case 2. The pair of clutch operation arms 41a and 41b are connected to the operation arm 41a or 41b by a coupling tool 42a or 4a.
Operation cable 43a or 43b connected by 2b
The pair of steering levers 44a and 44b separately located on the left and right sides of the steering handle 3 are interlocked with each other, and the steering levers 44a or 44b are gripped to the cut side, thereby The steering lever 44 is swung to the clutch disengagement position to operate the steering clutch.
By reciprocating and swinging a or 44b toward the entrance side by its self-restoring force and the restoring force toward the entrance side of the steering clutch, the clutch is generated by the restoring force toward the entrance side of the steering lever 44a or 44b and the steering clutch. It is configured to return to the on position and operate the steering clutch on and off.

As shown in FIG. 5, the outer cable of the operation cable 30 connecting the accelerator device of the engine E and the accelerator lever 31 is the outer cable portion 30A on the accelerator device side and the outer cable portion 30L on the accelerator lever side. And the outer cable portions 30A and 30L are connected to each other so as to be slidable relative to each other in the longitudinal direction of the operation cable 30, thereby configuring the accelerator adjustment mechanism 50. By operating the accelerator adjustment mechanism 50, The gear shift of the accelerator device of the engine E can be adjusted. That is, when the accelerator adjustment mechanism 50 is operated on the side where the outer cable portion 30A on the accelerator device side projects from the outer cable portion 30L on the accelerator lever side, the outer cable length becomes the normal length, The accelerator device reaches the traveling set speed set by the accelerator lever 31. The outer cable portion 30A on the accelerator device side is the outer cable portion 3 on the accelerator lever side.
When the accelerator adjustment mechanism 50 is operated on the side where the length protruding from 0L becomes shorter, the outer cable length becomes shorter than the normal length, and the operation cable 30 acts to decelerate the accelerator device. The steering low speed is reduced by the speed determined by the shortening stroke of the outer cable from the traveling set speed.

Outer cable portion 3 on the accelerator device side
The inner cable 53a connected to the cable connector 51 of 0A and the cable connector 52 of the mission case 2, and the outer cable 53b of which one end is held by the outer holder 54 of the accelerator lever side outer cable portion 30L. An interlocking cable 53, a coil spring 55 configured to urge the cable connector 51 and the outer holder 54 apart from each other, and the other end of the outer cable 53b of the interlocking cable 53. And an outer holder 56 connected to the mission case 2 so as to be swingably supported around an axis 56a.
With this, an interlocking mechanism 57 that interlocks the accelerator adjustment mechanism 50 with the pair of steering clutches is configured, and the interlocking mechanism 57 interlocks the accelerator adjustment mechanism 50 with the switching operation of the pair of steering clutches. It is configured to operate automatically. That is, when one of the pair of steering clutches is operated to the disengagement side, the operation cable 43a or 43b is pulled and the connecting tool 4 is operated.
In order to pull up the clutch operating arm 41a or 41b to the clutch disengaged position via 2a or 42b, the coupling tool 42a or 42b pushes up the outer holder 56. Then, the outer holder 5
Since 6 operates to move the outer cable 53b of the interlocking cable 53 toward the accelerator adjusting mechanism 50 against the coil spring 55, the protruding length of the outer cable portion 30A from the outer cable portion 30L becomes short. As a result, the interlocking mechanism 57 automatically switches the accelerator adjusting mechanism 50 to the steering low speed side in conjunction with the disengagement operation of any one of the steering clutches. When the steering clutch that has been operated to the disengagement side is returned to the entry side, the operation cable 43a or 43b is loosened and the coupling tool 42a or 42b is also operated to lower the clutch operation arm 41a or 41b to the clutch engaged position. It descends and releases the push-up operation for the outer holder 56.
Then, due to the pushing operation by the coil spring 55, the outer holder 56 descends until it is received by the coupling tools 43a, 43b, and the outer cable 53b of the interlocking cable 53 moves from the accelerator adjusting mechanism 50 to the clutch operating levers 40a, 40b. And move to the outer cable portion 30A of the outer cable portion 30A.
The protruding length from L returns to the original long length. As a result, the interlocking mechanism 50 interlocks with the operation of turning the steering clutch to automatically switch the accelerator adjusting mechanism 50 to the side of the set speed for traveling.

That is, either the left or right steering lever 44a
Alternatively, the operator manipulates the steering wheel 44b to the right or the left by turning either one of the steering clutches to stop the driving of one of the left and right traveling wheels 1. At this time, the interlocking mechanism 57 and the accelerator adjusting mechanism 5
Therefore, the accelerator device of the engine E automatically switches from the set speed for traveling set by the accelerator lever 31 to the low speed for steering, and the rotation speed of the engine E becomes lower than that when straight ahead. As a result, the traveling wheels 1 located on the outer side of the turning of the body are automatically decelerated and driven as compared with the case of straight traveling, and it is safe at a low speed without performing a special deceleration operation only by operating the steering levers 44a or 44b. The aircraft steers and turns.

FIG. 7 shows another structure of the interlocking mechanism 57 for interlocking the accelerator adjusting mechanism with the steering clutch.
That is, the outer cable 53 of the interlocking cable 53
Outer holder 56 that holds the clutch side end of b
Are connected to both ends of the transmission case 2 so as to be supported by the mission case 2 via a pair of support links 58, 58 which are swingably connected to each other. That is, when the steering clutch is disengaged and the connecting tool 42a or 42b is pushed up to the outer holder 56, the operating force causes the pair of support links 58, 58 to swing to the upright side with respect to the mission case 2, When the steering clutch is turned on and the push-up of the coupling tool 42a or 42b against the outer holder 56 is released, the pair of support links 58, 58
Oscillates toward the lodging side with respect to the mission case 2. For this reason, the outer holder 56 is interlocked with the disengagement operation of the steering clutch, and is moved to the side separated from the support point of the inner cable 53a by the transmission case 2 to move the outer cable 53b to the accelerator adjustment side. The outer cable 53b can be returned and moved by moving to the side closer to the inner cable support point in conjunction with the turning operation of the steering clutch. As a result, the accelerator adjustment mechanism is automatically operated in conjunction with the operation of the steering clutch.

FIG. 8 shows still another structure of the interlocking mechanism 57 for interlocking the accelerator adjusting mechanism with the steering clutch. That is, the pair of clutch operating arms 41a,
41b to the cable connecting arm 59a or 5 respectively
9b extends so as to swing integrally, one of the pair of cable connecting arms 59a and 59b is connected to the inner cable 53a of the interlocking cable 53, and the other cable connecting arm 59b is connected to the outer cable 53b of the interlocking cable 53. It holds the end of. That is, when one of the pair of steering clutches is disengaged or returned to the on / off position, the clutch operating arm 41a or 41b is accompanied by the cable connecting arm 59a or 59.
b swings, the interval between the cable connecting points between the cable connecting arms 59a and 59b becomes wider, or returns to the original narrow interval, and the inner cable 53a is slid with respect to the outer cable 53b. As a result, the accelerator adjustment mechanism is automatically operated in conjunction with the operation of the steering clutch.

FIG. 9 shows the accelerator device and the accelerator lever 3.
2 shows another embodiment structure of an accelerator adjusting mechanism 50 that acts on the operation cable 30 connecting with 1 to perform a gear shift operation of the accelerator device. That is, the outer cable portion 30A on the accelerator device side of the operation cable 30 and the outer cable portion 30L on the accelerator lever side are connected by a connecting pin 60 so as to relatively oscillate about the axis thereof. The holders 61a and 61b are separately held. Then, when one outer holder 61a is oscillated to the side away from the other outer holder 61b, the outer cable length becomes the normal length, and the accelerator device is set by the accelerator lever 31. Adjust to the set speed for driving. When one outer holder 61a is rocked to the side closer to the other outer holder 61b, the outer cable length becomes shorter than the normal length, and the operation cable 30 acts to decelerate the accelerator device. For this purpose, the accelerator device is adjusted to a low steering speed which is decelerated by a speed determined by the shortening stroke of the outer cable from the traveling set speed.

[Other Embodiments] When the main clutch is also used as the traveling clutch as in the above-described structure, the connection between the engine and the connecting work device is automatically cut off, and the operation of the recoil starter device can be lightened, which is advantageous. However, the present invention can also be applied to a case where a clutch dedicated to a traveling device that connects and disconnects the transmission from the engine to only the traveling device such as traveling wheels is employed. Therefore, the main clutch 7 is referred to as the traveling clutch 7.

Detecting means for detecting the operation of the movable part other than the starting cable of the recoil starter device, and clutch operation for directly operating the traveling clutch main body to disengage the traveling clutch based on the detection result of this detecting means. The present invention can be applied to a case where the interlocking mechanism including the means is adopted instead of the interlocking mechanism 20 having the above-described structure.

The present invention can be applied to a walk-type carrier, a mower, etc., as well as a walk-type management machine. Therefore, these are collectively referred to as a walk-behind work vehicle.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Fig. 1] Side view of the whole walk-behind rotary tiller

FIG. 2 is a schematic perspective view of an interlocking mechanism.

FIG. 3 is a schematic perspective view of an interlocking mechanism.

FIG. 4 is an explanatory diagram of an accelerator operating device.

FIG. 5 is a sectional view of an accelerator adjusting mechanism.

FIG. 6 is a front view of the interlocking mechanism.

FIG. 7 is a front view of another structure of the interlocking mechanism.

FIG. 8 is a front view of yet another embodiment structure of the interlocking mechanism.

FIG. 9 is a front view of another structure of the accelerator adjustment mechanism.

[Explanation of symbols]

 7 Running Clutch 9 Operating Lever 12 Recoil Starter Device 13 Starting Cable 20 Interlocking Mechanism 22 Starter Side Interlocking Part 25 Clutch Side Interlocking Part

Claims (3)

[Claims] 1. A recoil starter device for an engine (1
By interlocking the traveling clutch (7) with 2), the traveling clutch (7) is automatically switched from being engaged to being disengaged as the recoil starter device (12) is operated toward the engine start side. Interlocking mechanism (2
Pedestrian work vehicle equipped with 0). 2. The interlocking mechanism (20) is interlocked with a starting cable (13) of the recoil starter device (12), and a starter-side interlocking portion (22) for receiving an operating force from the starting cable (13). The walk-behind work vehicle according to claim 1, further comprising an interlocking mechanism for switching the traveling clutch (7) by a pulling force of the starting cable (13). 3. The interlocking mechanism (20) includes a clutch side interlocking portion (25) interlocking with an operating lever (9) of the traveling clutch (7), and the switching operation of the operating lever (9) is performed. The walk-behind work vehicle according to claim 1 or 2, which is an interlocking mechanism that switches and operates the traveling clutch (7).