JP2001275435A - Blade clutch mechanism for lawn mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lawn mower improved in such a problem caused by conventional lawn mowers that an operator must once shift a traveling clutch to 'off' from a situation that he is driving and operating a machine body while gripping a handle and stop the machine body from traveling, when he wants to shift blades between driving/stopping states, then go to a side of the machine body and operate a blade clutch lever, because a traveling clutch lever for shifting the traveling clutch and the blade clutch lever for shifting a blade clutch are attached to the handle and the machine body, respectively, in the conventional lawn mower. SOLUTION: In this lawn mower having the machine body 1 which is self- movable, is equipped with blades 13, 36, and has the handle 40 extending from the rear of the body, the blade clutch lever 42 for operating the blade clutch 61 used for shifting the blades between the driving/stopping states is attached to the handle 40, and the blade clutch 61 is equipped with a blade clutch bracket 71 which is energized in an either direction of both the 'on'/'off' sides and used for shifting the blade clutch 61 between the 'on'/'off' states, and further the clutch bracket 71 and the blade clutch lever 42 are connected with each other by a wire W.

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 mechanism for switching between driving and stopping of a cutting blade in a walking type lawn mower having a handle extending from a rear end of a self-propelled vehicle body.

[0002]

2. Description of the Related Art Conventionally, a walking lawn mower having a handle extending from a rear end of a self-propelled vehicle body equipped with a cutting blade is known.
The mowing blade is driven to mower.
In such a lawn mower, a traveling clutch lever for operating a traveling clutch that switches between running and stopping the vehicle body is attached to a handle, and a cutting blade clutch lever that switches between driving and stopping a cutting blade is attached to the vehicle body. Was.

[0003]

As described above, since the traveling clutch lever is attached to the handle and the cutting blade clutch lever is attached to the vehicle body, when switching between driving and stopping of the cutting blade, the handle must be held. It is necessary to temporarily switch off the traveling clutch to stop the vehicle body from the state where the traveling operation of the vehicle body is being performed and then move to the vehicle body side to operate the cutting blade clutch lever. In other words, in mowing work, when turning over at the edge of the lawn, the handle was lowered, the cutting blade was lifted up, turned and rotated, and the next position was cut. When only the cutting blade was to be moved, the cutting blade clutch lever had to be turned to the "off" side by moving to the vehicle body side. Therefore, the operation of switching between driving and stopping of the cutting blade becomes complicated, and when the vehicle is driven to stop only the driving of the cutting blade during lawn mowing work, or when there is an obstacle on the front side at the time of traversing, the cutting blade is moved. In such a case, the blade could not be instantly stopped while holding the handle.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in a lawn mower having a handle extending from a rear end of a self-propelled vehicle body equipped with a cutting blade, a cutting blade clutch for operating a cutting blade clutch for switching between driving and stopping of the cutting blade. A lever was attached to the handle.

According to a second aspect of the present invention, the cutting blade clutch is provided with a bracket which is biased to one side of an on side or an off side to switch on / off of the cutting blade clutch, and the bracket and the cutting blade clutch lever are provided. And were connected by a wire.

According to a third aspect of the present invention, a traveling clutch lever for operating a traveling clutch for switching between traveling and stopping of the vehicle body is attached to the handle near the cutting blade clutch lever, and the traveling clutch lever is operated to the ON side. In this case, a check mechanism is provided to restrict the operation of the cutting blade clutch lever to the ON side.

According to a fourth aspect of the present invention, the restraint mechanism enables only the cutting blade clutch lever to be operated to the off side from the state where both the cutting blade clutch lever and the traveling clutch lever are operated to the on side. Be composed.

According to a fifth aspect of the present invention, the restraining mechanism includes a lever stopper biased in one rotation direction, a cutting blade clutch arm that rotates integrally with the cutting blade clutch lever, and a traveling clutch lever. And a traveling clutch arm that rotates integrally.

[0009]

Next, an embodiment of the present invention will be described. FIG. 1 is a perspective view showing a lawnmower equipped with a cutting blade clutch mechanism of the present invention, FIG. 2 is a rear view showing a mounting portion of a traveling clutch lever and a cutting blade clutch lever in a handle, and FIG. FIG. 4 is a side view showing a mounting portion of the traveling clutch lever to the handle in a state where the traveling clutch lever is turned to the side, and FIG. FIG. 5 is a side view showing an attachment portion, and FIG. 5 is a side view showing an attachment portion to the handle of the cutting blade clutch lever in a state where the traveling clutch lever is turned on and the cutting blade clutch lever is turned off. FIG. 6 is a front view showing a lever stopper, FIG. 7 is a side view thereof, and FIG. 8 is a diagram showing a state in which the traveling clutch and the cutting blade clutch lever have been turned to the ON side. Side view showing a mounting portion of the handle of the cutting blade clutch lever when the rotation operation to the off side,
9 is a side sectional view showing the cutting blade clutch, FIG. 10 is a plan view showing the cutting blade clutch bracket in a state where the cutting blade clutch is turned to the off side, and FIG. 11 is turned to the side where the cutting blade clutch is turned on. Plan view showing the cutting blade clutch bracket in a folded state,
FIG. 12 is a side view showing the cutting blade clutch shaft, and FIG. 13 is a bottom view of the same.

The overall construction of a lawn mower equipped with the cutting blade clutch mechanism of the present invention will be described. In the lawn mower shown in FIG. 1, a pair of left and right moving wheels 3 is attached to a rear portion of the vehicle body 1, and the moving wheels 3 are rotatable by an engine 11 mounted on the vehicle body 1, The moving wheels 3 are used for moving to the work place, and the moving wheels 3 are removed during mowing work, and a small-diameter rear roller (not shown) provided coaxially between the moving wheels 3.
Use A front roller 5 is provided at a front portion of the vehicle body 1,
The front roller 5 is supported by a pair of left and right front roller support members 4 so as to be able to move up and down with respect to the vehicle body 1 so that the cutting height can be adjusted.

Further, a reel-type rotary cutting blade 13 composed of a suitable number of blades formed by being spirally bent is provided horizontally on the left and right sides of the vehicle body 1. It can be driven to rotate. Further, between the rotary cutting blade 13 and the front roller 5, a number of vertical blades 36 are provided side by side.

A handle 40 is attached to the rear end of the vehicle body 1 and extends rearward and upward from the vehicle body 1. An accelerator lever 41 for adjusting the number of revolutions of the engine 11 and a brake lever 43 for operating a brake device for braking the moving wheels 3 are attached near the grip portion 40b disposed at the tip of the handle 40. I have. The support portion 40a of the handle 40 includes an engine 11
Clutch lever 45 for performing on / off operation of a traveling clutch interposed between the shaft and the shaft supporting the moving wheels 3, and a cutting blade interposed between the engine 11 and the rotary cutting blade 13. A cutting blade clutch lever 42 for performing an on / off operation of the clutch 61 (shown in FIG. 9) is attached. By attaching the cutting blade clutch lever 42 to the handle 40 together with the traveling clutch lever 45, there is no need to temporarily stop the vehicle body 1 to perform the on / off operation of the cutting blade clutch 61 and move the vehicle body 1 to the vehicle body 1 side. Since the operation can be performed at hand, the operation can be simplified and the operability can be improved. However, the mounting positions of the cutting blade clutch lever 42 and the traveling clutch lever 45 are not limited as long as they are located near the handle 40.

In the lawn mower constructed as described above, the engine 11 drives the rear roller installed coaxially with the moving wheel 3 to rotate the body 1 so that the body 1 travels. Are rotated in opposite directions to perform lawn mowing. in this case,
The turf pressed by the front roller 5 that rotates following the traveling of the vehicle body 1 is a vertical blade 3 that rotates in a reverse direction to the front roller 5.
6, and the turf that has been raked is immediately cut by the rotary cutting blade 13 and horizontal cutting is performed. In addition, vertical cutting is performed by the vertical blade 36, so that the leaves that are lying long and the leaves and stems that have grown low and wide are cut, and at the same time, the sachi (dead grass and cuttings) accumulated on the ground surface is removed. The main organic residue) is scraped off.

Next, the configuration of the traveling clutch lever 45 and the cutting blade clutch lever 42 attached to the handle 40 will be described. As shown in FIGS. 2 to 4, the traveling clutch lever 45 is attached to the support portion 4 of the handle 40.
0a, which is rotatably attached to the upper portion (the side of the grip portion 40b) and protrudes to one side of the left and right.
Is rotatably attached to the support portion 40a of the handle 40 and protrudes to the other side. The traveling clutch lever 45
A traveling clutch arm 45a is integrally fixed to the turning fulcrum portion 45b so as to be integrally rotatable, and a cutting blade clutch arm 42a is integrally rotatable to the turning fulcrum portion 42b of the cutting blade clutch lever 42. It is fixed.

The traveling clutch lever 45 and the cutting blade clutch lever 4 on the support portion 40a of the handle 40 are also provided.
2, the stopper bracket 46
, A lever stopper 47 is fixedly provided. FIG.
As shown in FIGS. 6 and 7, the lever stopper 47 includes a fixed portion 47a fixed to the stopper bracket 46 and a movable portion 47b rotatable with respect to the fixed portion 47a.

Assuming that the angle formed between the fixed portion 47a and the movable portion 47b on one surface A of the lever stopper 47 is θ (FIG. 4), the angle θ of the movable portion 47b is smaller than the fixed portion 47a by the spring 48. It is urged in a certain direction. The rotation range of the movable part 47b is regulated so that the state in which the fixed part 47a and the movable part 47b are substantially linear when viewed from the side (the state shown in FIG. 7) becomes the minimum value of the angle θ. The movable portion 47b is rotatable from this state in a direction in which the angle θ increases. That is, the movable part 47b
Is rotatable from the state shown in FIG. 7 in the direction toward the other surface B. When no force is applied to the movable part 47b, the movable part 47b
Is minimized.

When the traveling clutch lever 45 and the cutting blade clutch lever 42 are turned downward (toward the vehicle body 1), the traveling clutch and the cutting blade clutch 61 are respectively turned off and turned upward (toward the grip portion 40b). When the moving operation is performed, the traveling clutch and the cutting blade clutch 61 are respectively turned on. The rotation fulcrum 45b and the traveling clutch arm 45a of the traveling clutch lever 45 and the rotation fulcrum 42b and the cutting blade clutch arm 42a of the cutting blade clutch lever 42 are provided on one surface of a lever stopper 47 fixed to the support 40a. It is arranged on the A side.

As shown in FIG. 3, when the traveling clutch lever 45 is turned to the side where the traveling clutch is turned off, the traveling clutch arm 45a which rotates integrally moves the lever stopper 47 from one surface A side. The movable arm 47a is rotated in a direction in which the angle θ increases by pushing the traveling arm locking portion 51 in the portion 47b. On the other hand, when the traveling clutch lever 45 is rotated to the side where the traveling clutch is turned on, the traveling clutch arm 45a also rotates integrally and separates from the traveling arm locking portion 51 of the movable portion 47b, and the movable portion 47b is It turns to the surface A side until the angle θ becomes minimum.

A wire W is connected to the traveling clutch arm 45a via a spring (not shown) provided on the traveling clutch side, and the traveling clutch lever 45 is turned to the side where the traveling clutch is turned off. When the travel clutch lever 45 is operated, the travel clutch lever 45 is biased by a spring via the wire W and is held at a rotational operation position on the side where the travel clutch is turned off. Conversely, the travel clutch lever 45 is turned on. When the turning operation is performed to the side where the traveling clutch is turned, the traveling clutch lever 45 is configured to be biased by passing over the fulcrum and to be held at the rotating operation position where the traveling clutch is turned on.

As shown in FIG. 6, the dimension of the movable portion 47b from the rotation fulcrum 47c on the right and left opposite sides of the portion where the traveling arm retaining portion 51 is formed in the movable portion 47b. A shorter blade arm locking portion 52 is formed. Then, the cutting blade clutch lever 42 is rotated to the side where the cutting blade clutch 61 is turned off, and the traveling clutch lever 45 is rotated to the side where the traveling clutch is turned on. 4
In the state where the cutting blade clutch lever 42 is turned to the side where the cutting blade clutch 61 is turned on, as shown in FIG. The tip of the cutting blade clutch arm 42a is locked by the cutting blade arm locking portion 52, and its rotation is prevented.
That is, when the traveling clutch is ON, the operation of the cutting blade clutch lever 42 to the ON side is regulated to prevent the cutting blade clutch 61 from being turned ON.

Conversely, the cutting blade clutch lever 42 is turned to the side where the cutting blade clutch 61 is turned off, and the running clutch lever 45 is turned to the side where the running clutch is turned off. In a state in which the movable portion 47b of the 47 is rotated by the traveling clutch arm 45a toward the other surface B where the angle θ is increased, the cutting blade arm formed shorter than the traveling arm locking portion 51 as shown in FIG. The locking portion 52 does not lock the cutting blade clutch arm 42a, and can operate the cutting blade clutch lever 42 to the ON side.

As described above, in the present lawn mower, when the traveling clutch lever 45 is rotated to the side where the traveling clutch is turned on, the cutting blade clutch lever 42 is restricted so as not to be operated to the ON side. Only when the traveling clutch lever 45 is rotated to the side where the traveling clutch is turned off, the cutting blade clutch lever 42 is
This constitutes a restraint mechanism that can be operated to the side where 1 is turned on. The cutting blade clutch arm 42a
Is connected to the cutting blade clutch 61 via springs 73 and 74 provided on the cutting blade clutch 61 side, which will be described later. When the cutting blade clutch lever 42 is turned to the side where the cutting blade clutch 61 is turned off, The cutting blade clutch lever 42 is
The cutting blade clutch 61 is urged by the springs 73 and 74 via the wire W, and is held at the turning operation position on the side where the cutting blade clutch 61 is turned off.
When the cutting blade clutch lever 42 is turned to the side where the cutting blade 1 is turned on, the cutting blade clutch lever 42 is configured to be held at the turning operation position on the side where the cutting blade clutch 61 is turned on by passing over the fulcrum.

When the traveling clutch lever 45 and the cutting blade clutch lever 42 are both turned on, the movable portion 47b of the lever stopper 47 is turned so that the angle θ is minimized. When the cutting blade clutch lever 42 is turned off from this state, as shown in FIG. 8, the tip of the cutting blade clutch arm 42a comes into contact with the cutting blade arm engaging portion 52 of the movable portion 47b. However, the movable portion 47b is configured to be rotatable in a direction in which the angle θ increases, and the cutting blade clutch arm 42a can rotate while pressing the movable portion 47b against the urging force of the spring 48. Therefore, the cutting blade clutch lever 42 can be turned to the off side.

The restraining mechanism includes a traveling clutch arm 45a which rotates integrally with the traveling clutch lever 45.
And a cutting blade clutch arm 42a that rotates integrally with the cutting blade clutch arm 42, and a lever stopper 47 that urges the movable portion 47b in a direction in which the angle θ decreases.

Next, the configuration of the cutting blade clutch 61 will be described. As shown in FIGS. 9 and 10, an input shaft 65 to which a rotational driving force is input from the engine 11 side is inserted into a casing 62 of the cutting blade clutch 61, and the rotational driving force is supplied to the rotary cutting blade 13. Further, an output shaft 66 for outputting to the vertical blade 36 side is inserted. The input of the rotational driving force from the engine 11 to the input shaft 65 is configured to be turned on / off by a traveling clutch.
In the casing 62, an input side clutch gear 67 is integrally rotatably attached to an end of the input shaft 65, and an output side clutch gear 68 is integrally rotatably mounted to an end of the output shaft 66. The input side clutch gear 67 and the output side clutch gear 68 are arranged to face each other. A sprocket 70 that can be integrally rotated is fixedly mounted on the input shaft 65.
0 transmits the rotational driving force to the moving wheels 3 via a chain or the like.

A cutting blade clutch shaft 69 is rotatably penetrated through the casing 62, and a pin 69a protruding from the lower end of the cutting blade clutch shaft 69 located inside the casing 62 is connected to the output side clutch gear 68. Is fitted into a groove portion 68a formed on the outer periphery of the groove. FIG. 12, FIG.
As shown in FIG. 3, a pin 69a protruding from the lower end of the cutting blade clutch shaft 69 is provided eccentrically with respect to the axis of the cutting blade clutch shaft 69. The horizontal part of the shaft operating lever 69b formed in a substantially L shape is fitted.

As shown in FIGS. 10 and 11, a cutting blade clutch bracket 71 is attached to the casing 62 so as to be rotatable about a rotation fulcrum 72. An elongated hole 71a is formed at one end. The vertical portion of the shaft operating lever 69b is slidably fitted in the elongated hole 71a.

One end of a wire W and a compression spring 74 are connected between the rotation fulcrum 72 and the elongated hole 71a of the cutting blade clutch bracket 71, and one end of the cutting blade clutch bracket 71 is connected. The portion (on the side of the elongated hole 71a forming portion with respect to the rotation fulcrum 72) is urged by the compression spring 74 toward the anti-compression spring 74 side. A tension spring 73 is connected to the other end of the cutting blade clutch bracket 71,
The other end of the cutting blade clutch bracket 71 is
3 is urged toward the tension spring 73 side.

The other end of the wire W is connected to the cutting blade clutch arm 42a.
Is turned to the ON side, the cutting blade clutch arm 42a
As a result, the one end side of the cutting blade clutch bracket 71 is rotated in the direction of the compression spring 74 by the pulling of the wire W as shown in FIG.

When the cutting blade clutch lever 42 is being turned to the off side, the cutting blade clutch bracket 71 is driven by the urging force of the compression spring 74 and the tension spring 73, as shown in FIG. The side is turned in the direction of the anti-compression spring 74. In this state, FIG.
As shown in FIG. 7, the input side clutch gear 67 and the output side clutch gear 68 are not meshed, the cutting blade clutch 61 is turned off, and the rotational driving force of the input shaft 65 becomes
It is not transmitted to the output shaft 66.

In this state, when the cutting blade clutch lever 42 is turned to the ON side, the cutting blade clutch bracket 71 is turned on.
Is rotated in the direction of the compression spring 74 against the urging force of the compression spring 74 and the extension spring 73, and cut through a shaft operating lever 69b fitted into the long hole 71a of the cutting blade clutch bracket 71. Blade clutch shaft 69 is approximately 1
It is turned by 80 ° (turned from the state shown in FIG. 10 to the state shown in FIG. 11). This cutting blade clutch shaft 69
As a result, the pin 69a, which is provided eccentrically with respect to the axis of the cutting blade clutch shaft 69, moves toward the input shaft 65, and the input clutch 65 and the output clutch gear 68 into which the pin 69a is fitted. The side clutch gear 67 meshes, the cutting blade clutch 61 is turned on, and the rotational driving force of the input shaft 65 is transmitted to the output shaft 66.

When the cutting blade clutch lever 42 is turned off from the state in which the cutting blade clutch 61 is turned on, the pulling force of the wire W at one end of the cutting blade clutch bracket 71 is lost. Compression spring 7
4 and one end of the cutting blade clutch bracket 71 is automatically rotated in the direction of the anti-compression spring 74 by the urging force of the tension spring 73, and the cutting blade clutch 61 is turned off.

As described above, the cutting blade clutch 61 is provided with the cutting blade clutch bracket 71 urged to the off side by the compression spring 74 and the tension spring 73, and the cutting blade clutch bracket 71 and the cutting blade clutch lever 42 are connected to each other. When connected with the wire W and the cutting blade clutch lever 42 is operated to the ON side, the cutting blade clutch bracket 71 interlocks to switch the cutting blade clutch 61 to the ON side and to move the cutting blade clutch lever 42 to the OFF side. When operated, the cutting blade clutch 61 is automatically switched to the off side by the urging force of the compression spring 74 and the tension spring 73.

With such a configuration, it is possible to reliably perform the switching operation between the on-side and the off-side while configuring the mechanism for turning on and off the cutting blade clutch 61 into a simple mechanism. Can be prevented. When the cutting blade clutch lever 42 is turned off, the cutting blade clutch bracket 71 is turned by the wire W, and the cutting blade clutch bracket 71 is turned off. When the clutch lever 42 is operated to the ON side, the cutting blade clutch bracket 71 can be automatically turned to the ON side by the urging force.

In the present lawn mower, as described above,
When the traveling clutch lever 45 is operated to the ON side, a check mechanism is configured to restrict the operation of the cutting blade clutch lever 52 to the ON side, so that the traveling clutch lever 45 is operated to the ON side and the cutting blade is operated. When the input shaft 65 of the clutch 61 is driven to rotate, the input-side clutch gear 6 is rotated.
7 and the output side clutch gear 68 do not mesh with each other,
It is possible to prevent the clutch gears 67 and 68 from being damaged.

Further, the restraining mechanism is configured such that only the cutting blade clutch lever 42 can be operated to the off side from the state where both the cutting blade clutch lever 42 and the traveling clutch lever 45 are operated to the on side. During the lawn mowing operation by driving the rotary blade 13 and the vertical blade 36 while the vehicle body 1 is running, only the rotary blade 13 and the vertical blade 36 are stopped, and the vehicle body 1 is kept running. Can be used to interrupt lawn mowing.

Further, the restraining mechanism includes the lever stopper 4
7, a cutting blade clutch arm 42a that rotates integrally with the cutting clutch lever 42, and a traveling clutch arm 45a that rotates integrally with the traveling clutch lever 45. And a highly reliable mechanism with less noise.

[0038]

As described above, the present invention has the following advantages. That is, in a lawn mower having a handle extending from a rear end of a self-propelled vehicle body equipped with a cutting blade, a cutting blade for operating a cutting blade for switching between driving and stopping of the cutting blade is provided. Since the clutch lever is attached to the handle, there is no need to stop the vehicle body once to turn on and off the cutting blade clutch, and it is not necessary to move the vehicle body to the vehicle side, and it is possible to operate it at hand. In addition, the operability can be improved by simplifying the operation.

Further, the cutting blade clutch is provided with a bracket which is urged to one side of the on side or the off side to switch the cutting blade clutch on and off, wherein the bracket and the cutting blade clutch are provided. Since the lever and the wire are connected by a wire, it is possible to reliably perform the switching operation between the on-side and the off-side while configuring the mechanism for turning on and off the cutting blade clutch as a simple mechanism, thereby preventing erroneous operation. be able to.

Further, the vehicle body may be moved near the cutting blade clutch lever in the handle.
A traveling clutch lever for operating the traveling clutch for switching the stop is attached, and when the traveling clutch lever is operated to the ON side, a retraction mechanism is configured to regulate the operation of the cutting blade clutch lever to the ON side. When the clutch lever is operated to the ON side and the input shaft of the cutting blade clutch is rotationally driven, the input clutch gear and the output clutch gear constituting the cutting blade clutch do not mesh with each other. It is possible to prevent the constituent members from being damaged.

Further, according to a fourth aspect of the present invention, the restraint mechanism can operate only the cutting blade clutch lever to the off side from the state where both the cutting blade clutch lever and the traveling clutch lever are operated to the on side. During lawn mowing work by driving a rotary blade or a vertical blade while driving the vehicle body, only the blade is stopped, and the lawn mowing is performed while the vehicle body is running. Can be interrupted.

Further, as described in claim 5, the restraint mechanism can operate only the cutting blade clutch lever to the off side from the state where both the cutting blade clutch lever and the traveling clutch lever are operated to the on side. Therefore, the restraining mechanism is a lever stopper biased in one rotation direction,
Since it is composed of a cutting blade clutch arm that rotates integrally with the cutting blade clutch lever and a traveling clutch arm that rotates integrally with the traveling clutch lever, the restraining mechanism can be configured with a simple mechanism, It is possible to construct a highly reliable mechanism that is inexpensive and has few failures.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a lawnmower including a cutting blade clutch mechanism of the present invention.

FIG. 2 is a rear view showing a mounting portion of a handlebar clutch lever and a cutting blade clutch lever in a handlebar.

FIG. 3 is a side view showing a mounting portion of the traveling clutch lever to a handle in a state where the traveling clutch lever is turned to the off side.

FIG. 4 is a side view showing the mounting portion of the cutting blade clutch lever to the handle in a state where the traveling clutch lever and the cutting blade clutch lever are turned to the off side.

FIG. 5 is a side view showing a mounting portion of the cutting blade clutch lever to the handlebar in a state where the traveling clutch lever is turned on and the cutting blade clutch lever is turned off.

FIG. 6 is a front view showing a lever stopper.

FIG. 7 is a side view of the same.

FIG. 8 is a side view showing a mounting portion of the cutting blade clutch lever to the handle when the traveling clutch and the cutting blade clutch lever are turned to the off side from the state of being turned to the on side; It is.

FIG. 9 is a side sectional view showing the cutting blade clutch.

FIG. 10 is a plan view showing the cutting blade clutch bracket in a state where the cutting blade clutch is turned to the off side.

FIG. 11 is a plan view showing the cutting blade clutch bracket in a state where the cutting blade clutch is turned to the ON side.

FIG. 12 is a side view showing a cutting blade clutch shaft.

FIG. 13 is a bottom view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 3 Moving wheel 11 Engine 13 Rotating cutting blade 36 Vertical blade 40 Handle 42 Cutting blade clutch lever 42a Cutting blade clutch arm 45 Running clutch lever 45a Running clutch arm 47 Lever stopper 61 Cutting blade clutch 69 Cutting blade clutch shaft 71 Cutting blade Clutch bracket W wire

Claims (5)

[Claims] 1. A lawn mower having a handle extending from a rear end of a self-propelled vehicle body equipped with a cutting blade.
A cutting blade clutch mechanism for a lawn mower, wherein a cutting blade clutch lever for operating a cutting blade clutch for switching a stop is attached to the handle. 2. A cutting blade clutch is provided with a bracket which is urged to one side of an on side or an off side to switch on and off of the cutting blade clutch, and the bracket and the cutting blade clutch lever are connected by a wire. The cutting blade clutch mechanism for a lawn mower according to claim 1, wherein: 3. A traveling clutch lever for operating a traveling clutch for switching between traveling and stopping of the vehicle body is mounted near the cutting blade clutch lever in the handle, and when the traveling clutch lever is operated to the ON side, the cutting is performed. The mowing blade clutch mechanism for a lawn mower according to claim 1, wherein a retraction mechanism for restricting operation of the blade clutch lever to the on side is configured. 4. The restraining mechanism is characterized in that only the cutting blade clutch lever can be operated to the off side from the state where both the cutting blade clutch lever and the traveling clutch lever are operated to the on side. The cutting blade clutch mechanism for a lawn mower according to claim 3. 5. The restraining mechanism includes a lever stopper biased in one rotation direction, a cutting blade clutch arm that rotates integrally with the cutting blade clutch lever, and a rotation that integrally rotates with the traveling clutch lever. The cutting blade clutch mechanism for a lawn mower according to claim 3 or 4, wherein the cutting blade clutch mechanism comprises a traveling clutch arm.