JPH06225613A - Operating lever structure for walking-type lawn mower - Google Patents

Abstract

PURPOSE:To provide an operating lever structure for a walking-type lawn mower designed to easily let in both the cutting edge an traveling clutch operating levers. CONSTITUTION:A cutting edge clutch operating lever 11 and a traveling clutch operating lever 12 are respectively fitted to a stationary handle 8 so as to be longitudinally rockable between the clutch-ON position in proximity to the grip 8a of the stationary handle 8 for driving the machine body and the clutch- OFF position away from the grip 8a, and in such a mode as to be energized at the clutch-OFF position, and these levers 11, 12 are provided behind the machine body away from the stationary handle 8 so as to be rockable around the identical shaft center and in such a mode as to superpose their rocking loci.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting blade clutch operating lever and a traveling clutch operating lever, respectively, in a clutch engagement position close to a grip portion of a fixed handle for operating an aircraft and a clutch disengagement distance from the grip portion. The present invention relates to an operating lever structure of a walk-behind lawn mower attached to the fixed handle in a state in which it can be swung back and forth in a position and biased to a clutch disengagement position.

[0002]

2. Description of the Related Art Conventionally, in the operating lever structure of this type of walk-behind lawn mower, as disclosed in, for example, Japanese Unexamined Patent Publication No. 3-83510, a cutting blade clutch operating lever with respect to a fixed handle. The traveling clutch operating lever and the traveling clutch operating lever are separately provided to the front and the rear so that the cutting blade clutch operating lever and the traveling clutch operating lever can be independently operated and operated, and both operating levers and the fixed handle are shared. It is well known that both clutches can be maintained in an engaged state by maintaining them in a gripped state.

[0003]

However, in the conventional structure described above, one clutch operating lever is located in front of the fixed handle and the other clutch operating lever is located behind the fixed handle. Therefore, when operating both clutch operating levers, you can open both hands and operate both clutch operating levers so that both clutch operation levers can be grasped together toward the fixed handle, or one of the clutch operating levers can be operated first. Since the fixed handle has to be gripped and held in the state of crocodile, and the other clutch operating lever has to be operated so that the fixed handle then moves to the crocodile, the operability is not good. The present invention has been made in view of the above circumstances, and an object thereof is to provide an operating lever structure for a walk-behind lawnmower that can be easily operated when both clutch operating levers are operated together.

[0004]

In order to achieve the above-mentioned object, an operating lever structure of a walking lawn mower according to the present invention is provided.
In the structure described in the introduction, the cutting blade clutch operating lever and the traveling clutch operating lever can be swung about the same axis and in a state where their swing loci overlap so that the rear side of the machine body is located behind the fixed handle. The feature is that it is provided on the crocodile. Further, in the structure described above, the cutting blade clutch operating lever and the traveling clutch operating lever can be swung about the same axis and in a state where their swing loci overlap.
A configuration may be adopted in which the rear of the machine body is provided on the side of the fixed handle, and the cutting blade clutch operating lever is disposed between the fixed handle and the traveling clutch operating lever. The operation and effect of this characteristic configuration are as follows.

[0005]

In other words, since the cutting blade clutch operating lever and the traveling clutch operating lever are provided on the rear side of the machine body with respect to the fixed handle with the swinging loci overlapping with each other around the same axis, When one of the clutch operating levers of the separated gutter is operated by swinging the fixed handle to the claw, the other clutch operating lever is also pushed by the clutch operating lever of the claw, and the fixed handle is swung to the claw and operated to enter. Will be done. Also, in the case where the cutting blade clutch operating lever is arranged between the fixed handle and the traveling clutch operating lever, the traveling clutch can be engaged and disengaged simply by engaging the traveling clutch in order to perform the mowing work while traveling. The cutting blade clutch is also turned on and operated, and the rotational driving state of the cutting blade is maintained only by performing a grip operation for maintaining the running state.

[0006]

Therefore, since the other operating lever is operated by simply grasping and operating one operating lever, the operation is simpler than that of operating both operating levers individually. At the same time, since the operating lever is also operated while holding the human hand on the fixed handle, the gripping force is smaller than that of operating both operating levers that are separated from each other but are urged by the crocodile. And it's easy to operate.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows a walk-behind lawnmower according to the present invention. This walk-behind lawn mower supports the cutting blade housing 3 so that the pair of left and right front wheels 1 and 1 and rear wheels 2 and 2 can travel, and outputs downward from an engine 4 installed above the cutting blade housing 3. A shaft 5 is extended, a cutting blade 7 is attached to the lower end of the output shaft 5 through a cutting clutch 6, and a fixed handle 8 is provided in a state of extending rearward and upward from the cutting blade housing 3. I am configuring. The power branched from the output shaft 5 of the engine 4 is transmitted to the rear wheels 2 and 2 via the traveling clutch 9.

As shown in FIG. 2, the fixed handle 8 is formed by bending a pipe frame material into an arch shape.
The arch portion constitutes a grip portion 8a for gripping. Then, brackets 10 and 10 are provided so as to project downward at positions where the left and right pipe frame portions 8b and 8b of the fixed handle 8 are connected to the grip portions 8a, and the brackets 10 and 10 swing around the horizontal axis P1. The cutting blade clutch operating lever 11 and the traveling clutch operating lever 12 are freely pivoted via pins 13 and 13. These cutting blade clutch operating levers 11 are also running clutch operating levers 12.
Is also a pipe member formed and processed, and its gripping operation portion has a curved shape like the grip portion 8a of the fixed handle 8. Cutting blade clutch operating lever 11
Of the traveling clutch operating lever 12 and the left gutter pivot point of the traveling clutch operating lever 12, respectively.
The release wires 14 and 15 linked to the operating portions of the cutting blade clutch 6 and the traveling clutch 9 are connected to the respective arms 11a and 12a so as to be able to push and pull. The cutting blade clutch operating lever 11 and the traveling clutch operating lever 12 have the same swing loci at the grip points, and both clutch operating levers 11 and 12 are grasped with respect to the arms 11a and 12a. Clutch disengagement position OF away from the portion 8a rearward
Each of the Fs is elastically biased by a spring, and is put into a clutch engagement state by swinging the clutch engagement position ON close to the grip portion 8a. Further, as shown in FIG. 1 and FIG. 2, a lateral through hole 16 formed in the cutting blade clutch operating lever 11 and a lateral through hole 17 formed in the arm 11a which is fitted onto the pin 13 so as to freely rotate.
A lock arm 18 having a fitting portion 18a that is fitted in and disengaged from and at the end portion is provided such that one end portion thereof is swingable around the horizontal axis P2 and slidable in the horizontal axis P2 direction. It is attached to the cutting blade clutch operating lever 11. This lock arm 1
8 is pulled out from the side through hole 17, the arm 1
1a and the cutting blade clutch operating lever 11 are disconnected from each other to be in a separate state, and when the lock arm 18 is fitted in the lateral through hole 16 and the lateral through hole 17, the arm 11a and the cutting blade clutch operation are performed. The lever 11 and the lever 11 can swing together.

Therefore, according to the above construction, in the walk-behind lawnmower when no operation is normally performed, the cutting blade clutch operating lever 11 and the traveling clutch operating lever 12 are elastically biased to the clutch disengaged position OFF. When performing the lawn mowing work, when the traveling clutch operating lever 12 is gripped with the grip portion 8a while the fitting portion 18a of the lock arm 18 is fitted in the lateral through hole 16 and the lateral through hole 17, the traveling operation is performed. When the clutch operating lever 12 and the cutting blade clutch operating lever 11 come close to the grip portion 8a, the cutting blade clutch 6 and the traveling clutch 9 are both put into the engaged state. Further, when the walking lawn mower is moved only and the mowing work is not performed, the lock arm 18 is moved to the arm 1.
By disengaging the arm 11a from the lateral through hole 16 of 1a, the arm 11a is elastically urged to switch to the clutch disengagement posture, and even when the cutting blade clutch operating lever 11 is in the clutch engaged position ON, the cutting blade clutch 6 remains It is in a cut state.

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 structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a side view showing the vicinity of a grip portion of a steering handle, where (a) shows a state where both clutch operation levers are in a disengaged position, and (b) shows a state where both clutch operation levers are in an engaged position. There is.

FIG. 2 is a partially longitudinal rear view showing a steering wheel.

FIG. 3 is an overall side view showing a walking lawn mower.

[Explanation of symbols]

 8 Fixed handle 8a Grip 11 Cutting blade clutch operating lever 12 Traveling clutch operating lever

Claims (2)

[Claims] 1. A clutch engagement position of the cutting blade clutch operating lever (11) and the traveling clutch operating lever (12) close to a grip portion (8a) of a fixed handle (8) for operating an aircraft and the grip. Operation lever structure for a walk-behind lawn mower attached to the fixed handle (8) so as to be swingable in the front-rear direction to a clutch disengaged position away from the portion (8a) and biased to the clutch disengaged position. The fixed handle (8) is capable of swinging the cutting blade clutch operating lever (11) and the traveling clutch operating lever (12) about the same axis and with their swing loci overlapping. ) Is a walking lever lawn mower structure that is provided on the back of the machine. 2. The clutch engagement position and the grip position of the cutting blade clutch operating lever (11) and the traveling clutch operating lever (12) are close to the grip portion (8a) of the fixed handle (8) for operating the airframe. Operation lever structure for a walk-behind lawn mower attached to the fixed handle (8) so as to be swingable in the front-rear direction to a clutch disengaged position away from the portion (8a) and biased to the clutch disengaged position. The fixed handle (8) is capable of swinging the cutting blade clutch operating lever (11) and the traveling clutch operating lever (12) about the same axis and with their swing loci overlapping. ) Is provided on the rear side of the machine body, and the cutting blade clutch operating lever (11) is disposed between the fixed handle (8) and the traveling clutch operating lever (12). Record Operation lever structure of the walk-behind lawnmower.