JP7546539B2 - Walk-behind work machine - Google Patents

Description

The present invention relates to a walk-behind work machine equipped with a control handle that extends rearward from the main body of the machine and a clutch lever that is supported by the control handle.

In this type of walk-behind work machine, the clutch lever, which is formed in a roughly gate-like shape when viewed from above or from the front to back, is made from a crushed pipe made by crushing a pipe material into a flat shape (see Patent Document 1).

JP 2009-126305 A (see paragraphs "0032", "Fig. 2", and "Fig. 6")

As described above, the gate-shaped clutch lever made of a crushed pipe is gripped together with the horizontal handlebar attached to the rear end of the steering handle to engage the clutch, allowing various tasks to be performed. By using a crushed pipe instead of a round pipe in this way, it becomes easier to grip the horizontal handlebar together. Therefore, it is advantageous when holding the clutch lever for a long period of time, such as in a deadman's specification where the clutch is disengaged when the hand is released from the clutch lever.
However, this structure is not very comfortable to hold because the painted metal surface is directly gripped. Therefore, it is possible to cover it with a plastic grip, but since there are multiple bending points, inserting the clutch lever into the soft plastic cylindrical grip is quite difficult, and productivity is inevitably reduced. If the cylindrical grip is split in half to make it easier to insert, it is necessary to glue it to the clutch lever, and if it is exposed to sunlight or rainwater, it tends to peel off after long-term use.
For this reason, conventionally, the metal surface of the clutch lever has been painted, as mentioned above.

The present invention aims to attach a cylindrical grip made of soft resin to a gate-shaped clutch lever on a walk-behind work machine.

The walk-behind working machine according to the present invention comprises:
A main body having a drive wheel body;
A control handle extending rearward from the main body of the aircraft;
a clutch lever supported by the steering handle,
The clutch lever is provided with left and right vertical rod portions extending along the front-rear direction of the vehicle body, and horizontal rod portions extending sideways of the vehicle body and connected to rear ends of the left and right vertical rod portions,
The clutch lever is configured such that the horizontal rod portion can be separated into left and right portions,
The left and right vertical rod portions and the horizontal rod portion are covered with a cylindrical grip made of soft resin.

According to the present invention, the horizontal rod portion of the clutch lever that is connected to the rear end of the vertical rod portion and faces the side of the vehicle body is configured to be separable into left and right halves. Therefore, by separating the horizontal rod portion into left and right halves, one end of the soft resin cylindrical grip can be inserted into the left horizontal rod portion, and the other end of the soft resin cylindrical grip can be inserted into the right horizontal rod portion.
In this way, one end of the soft resin tubular grip is inserted so that it passes over a single bend point where the left horizontal rod portion and the left vertical rod portion intersect, and the other end of the soft resin tubular grip is inserted so that it passes over a single bend point where the right horizontal rod portion and the right vertical rod portion intersect.In the end, the tubular grip only has to pass over one bend point each on the right and left, and there is no need to insert one tubular grip so that it passes over two bend points on the right and left.
Therefore, it is relatively easy to attach the soft resin cylindrical grip to the clutch lever, which has the advantage that it is relatively easy to assemble a clutch lever having a soft resin cylindrical grip attached in a walk-behind working machine.

In the present invention, it is preferable that the cylindrical grip is divided into left and right parts at the point that covers the horizontal rod portion.

According to the present invention, the cylindrical grip itself is divided into left and right halves, which shortens the insertion length and makes it easier to handle, making it even easier to assemble the clutch lever.

In the present invention, it is preferable that the ends of the horizontal rods, which are divided into left and right parts, opposite the positions where they are connected to the left and right vertical rods, are exposed from the end of the cylindrical grip in the same direction, and that the ends of the horizontal rods are connected to each other by a connecting member.

According to the present invention, the parts of the clutch lever that are most frequently gripped are securely covered with a cylindrical grip, and it is possible to omit covering parts of the clutch lever that are less likely to be gripped with a cylindrical grip, thereby making it even easier to assemble the clutch lever.
In other words, the clutch lever is likely to be gripped at the vertical or horizontal rod near the intersection of the left and right vertical and horizontal rods, and the horizontal rod, which is divided into left and right, is gripped relatively less frequently near the end opposite the position where it connects to the left and right vertical rods.
Therefore, by eliminating the grip coverage near the end of the horizontal rod portion opposite the position where it connects to the left and right vertical rod portions, which is a portion that is gripped relatively infrequently, and making it easier to connect using the connecting member, the assembly work of the clutch lever is made even easier.

In the present invention, the connecting member is preferably formed in a cylindrical shape that fits around the left and right horizontal rod portions, and is formed in a cross-sectional shape similar to that of the cylindrical grips so that the outer peripheral surface of the connecting member is substantially flush with the outer peripheral surface of the cylindrical grips that are fitted around the horizontal rod portions.

According to the present invention, the cylindrical connecting member that fits onto the horizontal rod portion has an outer circumferential surface that is almost flush with the outer circumferential surface of the cylindrical grip that is also fitted onto the horizontal rod portion, making it easy to use without being aware of where the cylindrical grip is not present.

In the present invention, it is preferable that a spacer is provided between the horizontal rod portion and the cylindrical grip to fill the radial gap between the horizontal rod portion and the cylindrical grip.

According to the present invention, when fitting a tubular grip onto a horizontal rod portion, the difficulty of the insertion operation increases significantly if a tubular grip with an inner diameter not significantly different from the cross-sectional diameter of the horizontal rod portion is used; however, if a tubular grip with an inner diameter that is somewhat larger than the cross-sectional diameter of the horizontal rod portion is used, the operation of fitting the tubular grip onto the horizontal rod portion can be performed relatively easily.
After the cylindrical grip is fitted onto the horizontal rod portion, a spacer can be filled into the radial gap between the horizontal rod portion and the cylindrical grip, making it easier to attach the cylindrical grip to the horizontal rod portion as desired.

In the present invention, the clutch lever is divided into three parts, that is, the left vertical rod portion, the right vertical rod portion, and the horizontal rod portion connected to the left and right vertical rod portions,
It is preferable that the cylindrical grip be divided into three parts, namely, vertical rod cover parts covering the left and right vertical rod parts, and a horizontal rod cover part covering the horizontal rod part.

According to the present invention, the vertical and horizontal rods can be easily formed into a shape close to a straight line without any large bends, and the cylindrical grip is divided into three parts: the left and right vertical rod cover parts and the horizontal rod cover part, making it easy to fit the cylindrical grip without having to go over any large bends.

FIG. 2 is a left side view showing the entire walk-behind working machine. FIG. 2 is a plan view showing the entire walk-behind working machine. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2 . FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line V-V in FIG. 4 . 13 is an explanatory diagram showing a clutch lever and a cylindrical grip in another embodiment. FIG. 13 is an explanatory diagram showing a clutch lever and a cylindrical grip in another embodiment. FIG. 13 is an explanatory diagram showing a clutch lever and a cylindrical grip in another embodiment. FIG. 13 is an explanatory diagram showing a clutch lever and a cylindrical grip in another embodiment. FIG. 13 is an explanatory diagram showing a clutch lever and a cylindrical grip in another embodiment. FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the description of this embodiment, the front-rear and left-right directions are described as follows unless otherwise specified. That is, the forward traveling direction (see arrow F in Figs. 1 and 2) when the walk-behind working machine is traveling for work is "forward", the backward traveling direction (see arrow B in Figs. 1 and 2) is "rear", the direction corresponding to the right side based on the forward posture in the front-rear direction (see arrow R in Figs. 2 and 3) is "right", and similarly the direction corresponding to the left side (see arrow L in Figs. 2 and 3) is "left". Arrow FR shown in Fig. 1 indicates the forward rotation direction of the wheels.

[Overall structure]
As shown in Figure 1, the running body (corresponding to the machine body) of a walk-behind working machine, which is an example of a walk-behind working machine, has an engine 11, which serves as a drive source, mounted on an engine frame 10 that constitutes a part of the machine body frame 1. A fuel tank 12 is mounted above the engine 11. A transmission case 2, which constitutes the machine body frame 1 (corresponding to the main machine body section) together with the engine frame 10, is integrally connected to the rear of the engine frame 10. A bumper 13 is connected to the front end of the engine frame 10.
The engine 11 and the transmission case 2 are linked together via a belt transmission mechanism (not shown) so as to be capable of transmitting power.

The transmission case 2, to which the power of the engine 11 is input, is formed in a bifurcated shape with a front case 2A extending downward and a rear case 2B extending diagonally downward and rearward.
A tire wheel 21 serving as a driving wheel is supported via an axle 20 on the lower part of the front case 2A, and a rotary tilling device 23 serving as an implement is supported via a drive shaft 22 on the rear case 2B.
Inside the transmission case 2, a gear transmission (not shown) is installed which changes the speed of the transmitted power of the engine 11 and transmits it to the axle 20 of the traveling drive system and the drive shaft 22 of the work drive system.

The main shift lever 15 extends diagonally upward and rearward from the top of the transmission case 2. By operating this main shift lever 15, the gear shift device in the transmission case 2 can be shifted, and the tire/wheel 21 can be shifted and rotated forward/reverse, as well as the rotary tilling device 23 can be rotated forward/reverse.

A handle post attachment member 25 is provided at the rear of the transmission case 2, which also serves as the vehicle frame 1. A steering handle 16 for steering extends from the handle post attachment member 25 toward the rear of the vehicle.
The steering handle 16 includes a pair of left and right side handle rods 16a, 16a extending along the front-to-rear direction, and a lateral handle rod 16b connected to the rear ends of the left and right side handle rods 16a, 16a.
A lever 17 for turning the working device on and off and a stop switch 18 are disposed on a right side handle bar 16a of the steering handle 16. Furthermore, a hand control lever 3 (corresponding to a clutch lever) is disposed near the rear end of the steering handle 16 so as to be able to swing up and down.

The working device on/off lever 17 is used to engage and disengage a clutch (not shown) provided in the drive system of the rotary tilling device 23 provided inside the transmission case 2. By switching the working device on/off lever 17 to the off state, the drive of the rotary tilling device 23 can be stopped and only the tire/wheel 21 for traveling can be driven. The stop switch 18 is wired to the control system of the engine 11 for switching off the engine 11.

A carburetor 14 is provided to which a fuel supply pipe 12a extending from a fuel tank 12 is connected. A fuel cock 14a is provided below the carburetor 14. By operating a lever 14b of the fuel cock 14a, the flow path within the fuel cock 14a is opened and closed to control the supply of fuel from the fuel tank 12. In addition, the fuel cock 14a can be used to remove residual fuel from the fuel tank 12 to the outside of the aircraft.
As shown in Fig. 2, the fuel cock 14a is positioned to protrude laterally outward from the engine frame 10 in a plan view, and is located close to the tire/wheel 21 in the left-right direction. As shown in Fig. 1, the fuel cock 14a is located close to the outer periphery of the tire/wheel 21 in a side view, and is provided at a location that corresponds to the upstream side in the rotational direction of the tire/wheel 21 during forward driving.

As shown in FIGS. 1 and 2 , a scraper 4 for scraping off mud adhering to the tire/wheel 21 is provided around the outer periphery of the tire/wheel 21 .
This scraper 4 is composed of a horizontal extension member 40 formed horizontally from a plate-like body made of sheet metal, and the upper part of a vertical plate member 41 provided between the transmission case 2 and the tire wheel 21 on the front side of the body of the rotary tillage device 23.

[About the hand-operated lever]
The hand-operated lever 3 is configured as follows.
As shown in Fig. 1, the hand control lever 3 is provided at the rear of the steering handle 16. That is, the hand control lever 3 is pivotally supported to be swingable back and forth about a swing axis P1 along the left-right direction provided at the lower part of a pair of left and right side handle bars 16a, 16a of the steering handle 16.
As shown in Figures 1 and 2, the hand-operated lever 3 has vertical rod portions 30 extending along the front-to-rear direction on both the left and right sides, and horizontal rod portions 31 connected to the ends of the left and right vertical rod portions 30, 30 that are farther from the oscillating axis P1, and is formed into an approximately gate-like shape overall when viewed in a plane or in the front-to-rear direction.

The hand control lever 3, as shown in FIG. 1, swings up and down around the swing axis P1 between a clutch-on position a1 where the vertical rod portion 30 is closest to the side handle rod 16a along the top surface of the side handle rod 16a, and a clutch-off position a2 where the horizontal rod portion 31 is above and away from the top surface of the horizontal handle rod 16b.

The vertical rod portion 30 of the hand control lever 3 is linked to a clutch operating arm (not shown) of a belt transmission mechanism provided in the power transmission system from the engine 11 to the transmission case 2. The tension state of the belt transmission mechanism is changed by this clutch operating arm, so that it can be switched between a clutch-on state and a clutch-off state.
Therefore, when the hand control lever 3 is in the clutch-on position a1, the clutch operating arm is maintained in the clutch-on state, and when the hand control lever 3 is operated to the clutch-off position a2, the clutch operating arm is switched to the clutch-off state to cut off the power transmission from the engine 11 to the transmission case 2. In this way, the hand control lever 3 serves as a main clutch lever that operates to engage and disengage the main clutch.

The hand control lever 3 is always biased to the clutch disengagement position a2 by a biasing mechanism (not shown).
When the horizontal rod portion 31 of this hand control lever 3 is in the clutch-engaged position a1, it is possible to work while driving the vehicle by gripping the horizontal rod portion 31 together with the lateral handle rod 16b of the control handle 16.
In this state, when the hand is released from the hand control lever 3 or the steering wheel 16, the horizontal rod portion 31 of the hand control lever 3 separates from the horizontal handle rod 16b and swings upright toward the clutch disengagement position a2. In other words, the hand control lever 3 is configured as a deadman's lever that automatically enters the clutch disengagement state when the hand is released.

[Structure of hand-operated lever]
As described above, the hand-operated lever 3 comprises a vertical rod portion 30 pivotally supported on the left and right side handle rods 16a, 16a on both the left and right sides so as to be able to swing back and forth about a swing axis P1 along the left-right direction, and a horizontal rod portion 31 connected to the ends of the left and right vertical rod portions 30, 30 that are farther from the swing axis P1.
3 and 5, the horizontal rod portion 31 is divided into left and right portions at approximately the center in the left-right direction. The divided portion of the horizontal rod portion 31, i.e., the end portion opposite the side connected to the left and right vertical rod portions 30, 30, is connected by a connecting member 32. In this connected state, the left and right vertical rod portions 30, 30, the left and right horizontal rod portions 31, 31, and the connecting member 32 as a whole are approximately gate-shaped when viewed from above or in the front-to-rear direction as described above.

The vertical rods 30, 30 and the horizontal rods 31, 31 constituting the hand control lever 3 are substantially perpendicular to each other on the imaginary plane F1 shown in Fig. 4. For convenience, based on bending points C1, C1 located substantially in the center of the bending portion shown in Fig. 3, the portion ranging from the pivot axis P1 to the bending point C1 will be referred to as the vertical rod 30, and the portions located between the bending points C1, C1 will be referred to as the horizontal rods 31, 31.
The ends of the horizontal rod portions 31, 31 that are farther from the bent points C1, C1 are connected to each other by a connecting member 32 as shown in FIG.

The hand control lever 3 is attached with a cylindrical grip 33 made of soft resin fitted onto the vertical rod portions 30, 30 and the horizontal rod portions 31, 31 in a range including the bending points C1, C1.
The area in which the tubular grip 33 is attached is the portion of the vertical rod portion 30 extending from the bending points C1, C1 toward the oscillating axis P1, and the portion of the horizontal rod portions 31, 31 extending from the bending points C1, C1 to a portion opposite the end of the connecting member 32.

As shown in FIG. 4, the vertical rods 30, 30 and the horizontal rods 31, 31 are formed of flattened pipes with a long diameter d1 along the imaginary plane F1 and a short diameter d2 in the direction intersecting the imaginary plane F1, resulting in an oval cross section.

The connecting member 32 is configured to fit onto the ends of the horizontal rod portions 31, 31, and is formed in a shape similar to the outer circumferential surfaces of the ends of the horizontal rod portions 31, 31 so that its inner circumferential surface can fit into the outer circumferential surfaces of the ends of the horizontal rod portions 31, 31.
The connecting member 32 and the ends of the horizontal rod portions 31, 31 are connected by four connecting bolts 34, as shown in FIGS.
In this embodiment, four connecting bolts are used for connection, but the number of connecting bolts 34 can be changed as appropriate.

The cylindrical grip 33 made of soft resin is formed into a cylindrical shape with an inner peripheral surface that is slightly larger than the outer peripheral surfaces of the ends of the horizontal rod portions 31, 31. The reason why the circumferential length of the inner peripheral surface of the cylindrical grip 33 is slightly larger than the circumferential length of the outer peripheral surfaces of the ends of the horizontal rod portions 31, 31 is to make it easier to fit the cylindrical grip 33 onto the horizontal rod portions 31, 31 and the vertical rod portions 30, 30.
In this way, the circumferential length of the inner circumferential surface of the cylindrical grip 33 is made slightly larger than the circumferential length of the outer circumferential surfaces of the ends of the horizontal rod portions 31, 31, so that a small radial gap is generated between the inner circumferential surface of the cylindrical grip 33 and the outer circumferential surfaces of the ends of the horizontal rod portions 31, 31. By inserting a spacer 35 as shown in Figures 3 to 5, the radial gap between the outer circumferential surfaces of the ends of the horizontal rod portions 31, 31 and the inner circumferential surface of the cylindrical grip 33 can be filled.

The spacer 35 is inserted between the outer peripheral surfaces of the ends of the horizontal rod portions 31, 31 and the inner peripheral surface of the cylindrical grip 33 in the following manner.
That is, by utilizing the property that the cylindrical grip 33 made of soft resin is capable of a certain degree of elastic deformation, the spacer 35 is inserted so as to be pressed into the gap from the end of the horizontal rod parts 31, 31. Then, the end of the cylindrical grip 33 is temporarily turned up to partially expand the gap between the inner peripheral surface of the cylindrical grip 33 and the outer peripheral surfaces of the horizontal rod parts 31, 31. An anti-slip tape (not shown) may be interposed in the expanded gap, and the cylindrical grip 33 may be adhered to the spacer 35 and the outer peripheral surfaces of the ends of the horizontal rod parts 31, 31.

3 to 5, the spacer 35 is a thin plate made of hard resin, and is formed long in the longitudinal direction of the horizontal rod portion 31, from the engagement point between the left horizontal rod portion 31 and the cylindrical grip 33 to the engagement point between the right horizontal rod portion 31 and the cylindrical grip 33. An insertion hole for the connecting bolt 34 is formed in the middle of the longitudinal direction of the spacer 35 within the range located inside the connecting member 32, and the position of the spacer 35 is fixed by inserting the connecting bolt 34 in the plate thickness direction of the spacer 35, as shown in FIGS.
As shown by the dashed line in Figure 3, the specific shape of the spacer 35 has a width in the plate surface direction of the spacer 35 such that the area located inside the central connecting member 32 is relatively narrow, and the width of the portions at both ends corresponding to the fitting points between the horizontal rod portion 31 and the tubular grip 33 is relatively wide.
In this embodiment, a state in which one spacer 35 is inserted is shown, but a plurality of spacers 35 may be stacked and inserted into the gap.

The cross-sectional shapes of the connecting member 32 and the cylindrical grip 33 are formed so that the outer circumferential surface of the connecting member 32 and the outer circumferential surface of the cylindrical grip 33 are substantially flush with each other when the spacer 35 is inserted into the cylindrical grip 33.

[Another embodiment]
Other embodiments are described below. The following embodiments may be used in combination unless a contradiction occurs. The scope of the present invention is not limited to the contents of these embodiments.

(1) In the above-described embodiment, the hand-operated lever 3 is configured as follows: the left horizontal rod portion 31 is connected to the end portion of the left vertical rod portion 30 far from the pivot axis P1, the right horizontal rod portion 31 is connected to the end portion of the right vertical rod portion 30 far from the pivot axis P1, the ends of the left and right horizontal rod portions 31, 31 are connected to each other by a connecting member 32, the left cylindrical grip 33 is fitted over the left vertical rod portion 30 and the left horizontal rod portion 31, and the right cylindrical grip 33 is fitted over the right vertical rod portion 30 and the right horizontal rod portion 31.
However, the present invention is not limited to this structure.
For example, it may be configured as shown in Fig. 6. In this structure, the left vertical rod portion 30 is formed in a straight line, and the right vertical rod portion 30 and horizontal rod portion 31 are configured as a single continuous L-shaped member. A straight cylindrical grip 33 is fitted onto the left straight vertical rod portion 30, and an L-shaped cylindrical grip 33 spans the right vertical rod portion 30 and horizontal rod portion 31.
The other configurations may be the same as those of the above-described embodiment.

(2) It may be configured as shown in Fig. 7. In this structure, the left vertical rod portion 30 and the right vertical rod portion 30 are both formed in a straight line, and a single, continuous, straight horizontal rod portion 31 is provided between the ends of the left and right vertical rod portions 30, 30.
The cylindrical grip 33 made of soft resin has linear vertical rod cover portions 33a, 33a which are individually fitted onto the left and right vertical rod portions 30, 30, and a linear horizontal rod cover portion 33b which is fitted onto the linear horizontal rod portion 31.
The other configurations may be the same as those of the above-described embodiment.

(3) It may be configured as shown in Fig. 8. In this structure, a single continuous straight horizontal rod portion 31 is provided, and each of the left and right vertical rod portions 30, 30 has a curved portion 30a that smoothly connects to the end of the horizontal rod portion 31, and the horizontal rod portion 31 and the left and right vertical rod portions 30, 30 are configured to be separable. A cylindrical grip 33 made of soft resin has a straight horizontal rod cover portion 33b that fits around the horizontal rod portion 31, and a vertical rod cover portion 33a that fits around the left and right vertical rod portions 30, 30 including the curved portion 30a.
The other configurations may be the same as those of the above-described embodiment.

(4) As shown in Figure 9, the left horizontal rod portion 31 is connected to the end portion of the left vertical rod portion 30 that is farther from the oscillating axis P1, and the right horizontal rod portion 31 is connected to the end portion of the right vertical rod portion 30 that is farther from the oscillating axis P1, and the tubular grip 33 is made of a single continuous piece of soft resin.
In this structure, one end of the tubular grip 33 is fitted onto the left horizontal rod portion 31, and the other end of the tubular grip 33 is fitted onto the right horizontal rod portion 31, thereby reducing the work of fitting the tubular grip 33 onto the horizontal rod portions 31, 31 compared to when this is done only from one end of the tubular grip 33.
The other configurations may be the same as those of the above-described embodiment.

(5) It may be configured as shown in Fig. 10. In this structure, the hand control lever 3 is configured so as to be separable into left and right parts at a middle point in the left-right direction of the horizontal rod part 31, and also at a connection point between the vertical rod part 30 and a base attachment part 36 for connection to the side handle rod 16a of the steering handle 16.
The left and right horizontal rods 31, 31 are connectable to each other by fitting a protrusion 31a and a hole 31b at their butt ends. The base mounting portion 36 and the vertical rod 30 are also connectable to each other by providing a similar fitting structure at their butt ends.
9, the cylindrical grip 33 is made of a single continuous piece of soft resin that extends over the left and right vertical rods 30, 30 and the horizontal rod 31. When attaching it to the hand control lever 3, one end of the grip 33 may be fitted to the left horizontal rod 31 and the other end to the right horizontal rod 31, similar to the example shown in FIG.
The other configurations may be the same as those of the above-described embodiment.

(6) Although not shown, as shown in Figures 3 and 4, the hand-operated lever 3 may be configured to be split into left and right halves at a midpoint in the left-right direction of the horizontal rod portion 31, and the tubular grip 33 may also be configured to be split into left and right halves at a midpoint in the left-right direction as shown in Figures 3 and 4, and further may be configured to be split at the connection point between the vertical rod portion 30 and the base mounting portion 36 for connecting to the side handle rod 16a.
The other configurations may be the same as those of the above-described embodiment.

(7) In the above-described embodiment, a clutch lever that operates the main clutch was used as an example of the hand-operated lever 3. However, it is not necessarily limited to a clutch lever that operates the main clutch. For example, the hand-operated lever may be one that operates the main clutch in conjunction with another device such as a parking brake.
The other configurations may be the same as those of the above-described embodiment.

The walk-behind working machine of the present invention can be used for walk-behind working machines, rice transplanters, vegetable transplanters, and various other working machines that have a clutch in the power transmission system and an operating lever for operating the clutch.

REFERENCE SIGNS LIST 1 Main body 3 Clutch lever 16 Steering handle 16a Side handle rod 16b Side handle rod 21 Drive wheel 30 Vertical rod portion 31 Horizontal rod portion 32 Connecting member 33 Cylindrical grip 33a Vertical rod cover portion 33b Horizontal rod cover portion 35 Spacer

Claims (6)

A main body having a drive wheel body;
A control handle extending rearward from the main body of the aircraft;
a clutch lever supported by the steering handle,
The clutch lever is provided with left and right vertical rod portions extending along the front-rear direction of the vehicle body, and horizontal rod portions extending sideways of the vehicle body and connected to rear ends of the left and right vertical rod portions,
The clutch lever is configured such that the horizontal rod portion can be separated into left and right portions,
In the walk-behind working machine, the left and right vertical rod portions and the horizontal rod portion are covered with cylindrical grips made of soft resin. The walk-behind working machine according to claim 1, wherein the cylindrical grip is divided into left and right parts at the point that covers the horizontal rod portion. The walk-behind working machine according to claim 2, wherein the ends of the horizontal rods, which are divided into left and right parts, opposite the positions where they are connected to the left and right vertical rods, are exposed from the end of the cylindrical grip in the same direction, and the ends of the horizontal rods are connected to each other by a connecting member. The walk-behind working machine according to claim 3, wherein the connecting member is formed in a cylindrical shape that fits around the left and right horizontal rods, and is formed in a cross-sectional shape similar to that of the cylindrical grips so that the connecting member has an outer peripheral surface that is substantially flush with the outer peripheral surface of the cylindrical grips that are fitted around the horizontal rods. The walk-behind working machine according to any one of claims 1 to 4, wherein a spacer is provided between the horizontal rod portion and the cylindrical grip to fill a radial gap between the horizontal rod portion and the cylindrical grip. The clutch lever is divided into three parts, that is, the left vertical rod portion, the right vertical rod portion, and the horizontal rod portion connected to the left and right vertical rod portions,
2. The walk-behind work machine according to claim 1, wherein the cylindrical grip is divided into three parts: vertical rod cover parts covering the left and right vertical rod parts, respectively; and a horizontal rod cover part covering the horizontal rod part.

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