JP2001258352A - Portable mower for balk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable balk mower which can be lightened, reduce production cost, improve the freedom of design, and so on, and can further improve grass handleability, slidability, and runnability. SOLUTION: This portable balk mower (1) comprising a mowing blade (10), an engine (30) for driving the mowing blade (10), and a shield cover (11) for partially or wholly covering the mowing blade (10), wherein the engine (30) is loaded and held on the shield cover (11), characterized in that the shield cover (11) is supported on a pair of sleigh-like spring plate grounding members (20, 20) which can slide on the ground surface (N, M).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relatively small and lightweight portable shore mower, which can be easily moved by hand by an operator, and more particularly to grass growing on a slope on a high shore. The present invention relates to a portable shore mower suitable for cutting grass.

[0002]

2. Description of the Related Art Conventionally, as a shore mower, for example, as can be seen in Japanese Patent Publication No. 62-61290, a body with wheels on which a motor is mounted and an upper surface (flat surface) of the shore
A main cutting blade for cutting grass growing on the hill, and a side cutting blade for cutting grass growing on the slope (slope) of the shore. The power of the prime mover is reduced by a reduction gear or a transmission shaft. The main body and the side blades are transmitted to the main and side cutting blades through a power transmission mechanism, and are simultaneously driven to rotate, while the aircraft is running on the upper side of the shore. It is common to cut the grass at the same time.

[0003] In such a conventional general shore mower, it is assumed that the machine is run while being positioned on the upper surface of the shore, and the cutting width of the slope by the side cutting blade is determined by the side cutting. Since it depends only on the rotation diameter of the blade, it can cope with a normal hill (low hill), but the cutting width of the slope is insufficient on a high hill with a large step.

[0004] In this case, if the main cutting blade and the side cutting blade are positioned on the same plane and the aircraft is driven along a high-sided slope, mowing of the slope cannot be prevented. The slopes on the high banks are extremely dangerous because they have steep slopes and poor scaffolding.

[0005] Also, having two cutting blades, having an airframe with wheels mounted with a prime mover,
Since a relatively long and complicated power transmission mechanism is required to transmit the power of the prime mover to both the cutting blades, etc., the apparatus configuration is complicated, the weight is heavy, the apparatus cost is high, and the workability is high. However, the operability was not good, and it was actually impossible to use it for mowing slopes on high shores.

[0006] In order to solve the problems associated with the conventional shore mower as described above, the inventors of the present invention first have to solve the above problem.
A cutting blade, a rotating shaft to which the cutting blade is attached and fixed, a prime mover for rotating and driving the rotating shaft, a shield cover covering a part or all of the cutting blade, and a vertically swingable swinging cover. An operating rod (handle) connected to the motor, wherein the prime mover is mounted and held on the shield cover, and the shield cover is provided with a ground member capable of sliding on the ground. A mower was proposed (see Japanese Patent Application No. 11-300630).

In such a proposed portable shore mower, when mowing a slope on a high shore, an operator usually stands on the upper surface of the high shore with a handle and rotates the cutting blade by a motor. While driving, the mowing work part including the cutting blade and the shield case is positioned at the uppermost part of the high shore, and the ground contact member lands on the high hill slope. If pressed lightly, the mowing work section (ground contact member) slides from the top to the bottom of the slope. At this time, the grass on the slope is cut in the vertical direction by the width corresponding to the rotation diameter by the rotating blade.

[0008] Next, in order to cut the grass growing next to the portion cut as described above, the mowing work section is once pulled up to the top of a slope, and then the mowing work section is moved to the next position. Move to the part where the grass to be cut is growing (next to the side), land the grounding member on the top of the slope on the high side in the same manner as above, and lightly push the mowing work part with the operating rod, The mowing work section (ground contact member) is slid from the top to the bottom of the slope, and thereafter, grass growing on the slope is similarly moved by a width corresponding to the rotation diameter of the cutting blade in the vertical direction. Try to reap.

[0009] As described above, the use of the portable shore mower proposed above requires only the operator to move laterally on the upper surface of the high shore and does not need to descend on the slope. Can be performed safely, easily, and quickly. Also, since the weight of the entire mowing work section is received on the ground (mowing surface) via the grounding member, the burden on the worker is reduced, and the work is not self-propelled. A break can be arbitrarily performed, and as a result, labor required for mowing can be reduced.

[0010]

However, the portable shore mower proposed above has the following problems to be improved. That is, in the portable shore mower, since the grounding member is integrally provided at the lower end of the side plate of the shield cover, the motor and the like can be supported on the side plate of the shield cover. Rigidity and strength are required, and the size thereof, particularly the distance between the left and right side plates, is determined by the left and right end positions of the grounding member. As a result, the shield cover, and thus the entire device, becomes heavy, and the manufacturing cost increases.
Furthermore, the degree of freedom in design is reduced, and the clearance between the cutting blade and the side plate portion on the side from which the grass cut off by the cutting blade is released cannot be increased so much. Was.

Further, since the grounding member is substantially formed of a rigid body, the front end (at the time of advance) or the rear end (at the time of retreat) of the grounding member is provided when the ground is rough, having large irregularities. In many cases, it hits the unevenness of the ground, a stone, or the like, or is caught at the root of the grass, and ends up. For this reason, it has also been an issue to further improve the gliding property and the running property.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to reduce the weight of the apparatus, reduce the manufacturing cost, improve the degree of freedom in design, and the like. Another object of the present invention is to provide a portable shore mower that can improve grass handling, sliding, and running performance.

[0013]

In order to achieve the above object, a portable shore mower according to the present invention basically comprises a cutting blade, a motor for driving the cutting blade, and the cutting blade. And a shield cover that covers a part or the entirety of the motor, the motor is mounted and held on the shield cover, and the shield cover is supported by a pair of left and right spring plate sled-shaped ground members that can slide on the ground. The sled-like grounding member,
A front end portion and a rear end portion are each formed of a spring plate having a folded portion formed rearward and forward from the grounding surface portion, and the shield cover is attached between the front and rear folded portions of the sled-shaped grounding member. It is characterized by having.

The front and rear folded portions of the sled-shaped grounding member are preferably bent from the grounding surface portion via a relatively large arc-shaped portion so as to draw a U-shape. In a preferred aspect of the present invention, the shield cover has an upper surface portion that holds the prime mover, and side plate portions that hang down from left and right ends of the upper surface portion, and at least grass cut off by the cutting blade is discharged. The side plate portion on the side extending from the sled-like grounding member in a plan view projects laterally.

In another preferred aspect, a front portion of the side plate portion located on a side from which the grass cut by the cutting blade is discharged extends obliquely rearward from the sled-shaped grounding member in plan view. It is a guide part for releasing the cut grass. In another preferred embodiment, a handle is connected to the shield cover so as to be vertically swingable. In this case, in a preferred aspect, the forked front portion of the handle is connected to the both side plate portions of the shield cover so as to be vertically swingable.

In a preferred embodiment of the portable shore mower according to the present invention having the above-described configuration, when mowing a slope on a high shore, the mowing machine described in the above-mentioned proposal (Japanese Unexamined Patent Application Publication No. Hei 11 (1999) -197) is used.
As in the case of No. 300630), the operator stands on the upper surface of the high shore with the handle, while driving the cutting blade by the motor,
The cutting blade, the shield case, the mowing work portion including the sled-shaped grounding member and the like are positioned at the uppermost portion of the high shore, and the sled-shaped grounding member is landed on the slope of the high shore. If the mowing part is pressed lightly, the mowing part (sledge-like grounding member) slides down from the top to the bottom of the slope, and the cutting blade causes the grass on the slope to rotate in the vertical direction. The width corresponding to is cut off.

Next, in order to cut off the grass growing next to the portion cut as described above, the mowing work section is once pulled up to the top of the slope so as to slide on the slope, and then, The mowing work section is moved to a portion where grass to be cut next grows (next to the side), and the sled-like grounding member is landed on the top of the slope on the high side in the same manner as described above. The mowing work section is gently pushed to slide the mowing work section (sled-like grounding member) from the top to the bottom of the slope, and similarly, the grass growing on the slope is cut vertically in the vertical direction. Cut the blades by the cutting width. As described above, by using the portable shore mower of the present invention, the worker only needs to move on the upper surface of the high shore and does not need to descend on the slope, so that the mowing work on the high shore slope is safe and easy. To
And it can be done quickly.

In addition to the above, in the portable shore mower of the present invention, the sled-like grounding member is formed by a spring plate having a front end portion and a rear end portion formed with folded portions toward the rear and front from the grounding surface portion, respectively. Since the shield cover is attached between the front and rear folded portions of the sled-like grounding member, the prime mover and the like may be supported by the upper surface of the shield cover. The side plate portion of the shield cover does not need to have much rigidity and strength. The side plate portion may be formed of a separate rubber plate or the like, and its size, particularly, between the left and right side plate portions. Is no longer restricted by the sled-like grounding member.

As a result, the shield cover, and hence the entire device, can be made lighter, the manufacturing cost can be reduced, and the degree of freedom in design can be increased.
Since the separation distance between the cutting blade and the side plate portion on the side from which the grass cut off by the cutting blade is released can be sufficiently large,
Grass handling is also improved.

Further, the sled-shaped grounding member has a front end and a rear end which are respectively rearward and forward from the grounding surface.
Since it is made of a spring plate that is folded back through a relatively large arc-shaped portion so as to draw a character, the sled-shaped grounding member abuts against the uneven surface of the ground, a stone, or the like when the ground is rough land having large unevenness. Even if they do, they can easily overcome them due to their elasticity and flexibility, and as a result, the sliding performance and running performance are further improved as compared with the case where a conventional rigid grounding member is used I do.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. 1, 2, and 3 respectively show a perspective view, a plan view, and a left side view of an embodiment of the portable shore mower according to the present invention. The portable shore mower 1 of the illustrated embodiment has a relatively small size and light weight as a strip-shaped cutting blade 10 and a motor for rotating the cutting blade 10 counterclockwise (in the direction C in FIG. 2) in plan view. (Displacement is about 20m
L) An air-cooled two-cycle gasoline engine 30 and a shield cover 1 having a rectangular shape in a plan view, which mounts and holds the engine 30 via a mount member 7 and covers the cutting blade 10.
1 and a pair of left and right sled-shaped ground members 2 supporting the shield cover (11) and capable of sliding on the ground (N, M).
0, 20 and both side plate portions 11 of the shield cover 11 (
L, 11R), the front end 53a of the forked front part 53,
A handle 50 53a is connected to be vertically swingable.
And

The shield cover 11 has an upper surface 11 for holding the engine 30 through the mount member 7.
A, and side plates (11L, 11R) that hang down from both left and right ends of the upper surface 11A, and the front portion 11a of the upper surface 11A is inclined obliquely upward to increase the front opening (mowing cutout). And the trailing part 11b
, A flexible rubber plate 12 is screwed so as to close the rear opening while leaving the cut grass discharge port 11C at the left end.

The front and rear ends of the sled-shaped grounding members 20 and 20 are respectively rearward (R) from the grounding surface 21.
And, toward the front (F), the folded portions 22, 24 via the relatively large arc-shaped portions 22A, 24A so as to draw a U-shape.
Are formed, and the front and rear folded portions 22, 24 of the sled-shaped grounding members 20, 20 are formed.
The upper surface portion 11A of the shield cover 11 is straddled between the rear end portions 23a, 23a and the front end portions 25a, 25a of the upper side portions 23, 25. Have been.

The side of the shield cover 11 from which the grass cut by the cutting blade 10 is released, here the left side plate portion 11L, protrudes leftward from the sled-shaped grounding member 20 in plan view. The front portion of the left side plate portion 11L is a cut grass discharging guide portion 11u extending obliquely rearward from the sled-shaped grounding member 20 in plan view. Weeding guide 11
A flexible rubber plate 14 is attached to the lower end of u so as to close a gap formed between the lower end and the ground (see FIG. 3). In addition, the pair of left and right sled-shaped ground members 20,
A safety stopper 16 is provided between the upper side portions 25 of the rear side 20 to restrict an operator from stepping into the shield cover 11.

The engine 30 is connected to the shield cover 1
The mount member 7 mounted and held on the first support member 1 includes a fixed support 29 fixed to substantially the center of the upper surface portion 11A of the shield case 11, and a cylindrical shape held and fixed to the fixed support 29 and protruding downward. It has a support part 38, an exterior member 39 also serving as a gear case projecting upward, and a cylindrical cover 37 covering the cylindrical support part 38, and inside the cylindrical support part 38 of the mount member 7, The rotating shaft 45 is the bearing 4
6 and 48, it is rotatably supported around a rotation axis Op perpendicular to the ground (upper surface M and slope N on the shore). Are sandwiched between the upper holding member 71 and the lower holding member 72, and are fastened and fixed together with the disc-shaped lower cover member 73 by the nut member 73.

The output member 40 (centrifugal clutch drum 41) of the engine is connected to an output bevel gear 91. The output bevel gear 91 is connected to an input bevel gear 92 provided at the upper end of the rotary shaft 45. The engine 3 is engaged with the rotation axis Op of the rotation shaft 45.
The rotation axis Oq of the zero output member 40 and the output bevel gear 40c is inclined rearward.

On the other hand, the handle 50 includes the forked front part 53 and a single rod-shaped rear part 51 connected to a common base part 52 (see FIG. 5) of the forked front part 53. And both front end portions 53a, 5
The vicinity of 3a is supported by swing support shafts 55, 55 arranged near the rear ends of the left and right side plate portions 11L, 11R of the shield cover 11 so as to be swingable in the vertical direction.

The front end 5 of the handle 50
The left and right side plate portions 11 are pulled in order to pull 3a to the front side F.
L, 11R are provided with locking pins 62, 62,
A tension coil spring 60 is stretched between the locking pins 62, 62 and the front ends 53a, 53a of the forked front section 53.

In the portable shore mower 1 of this embodiment having such a configuration, when mowing the slope N on the high shore, as shown in FIG. In the same manner as the blade (Japanese Patent Application No. 11-300630), an operator stands on the upper surface M of the high shore with the handle 50 and drives the blade 10 by the engine 30 while the blade 30 is being driven.
0, the shield case 11, the sled-like grounding member 2
The mowing work unit 5 composed of 0, 20, etc. is positioned at the uppermost portion of the high shore, and the sled-shaped grounding members 20, 20 are landed on the slope N of the high shore. When the part 5 is pressed lightly, the mowing work part 5 (the sled-like grounding members 21, 21) slides down from the top to the bottom of the slope N, and the cutting blade 10 cuts the grass on the slope N. Is cut in the vertical direction by a width corresponding to the rotation diameter.

Next, in order to cut off the grass growing next to the portion cut as described above, the mowing work section 5 is once pulled up to the top of the slope N by sliding the slope. Then, the mowing work unit 5 is moved to a portion where the grass to be harvested next grows (adjacent to the side), and the sled-shaped grounding members 21 and 21 are moved to the top of the slope N on the high side in the same manner as described above. After landing, the mowing work unit 5 is gently pushed by the handle 50, and the mowing work unit 5 is slid from the top to the bottom of the slope N. Hereinafter, similarly, the grass growing on the slope N In the vertical direction by the cutting width of the cutting blade.

As described above, if the portable shore mower 1 of the present embodiment is used, the worker only needs to move the upper surface M of the high shore sideways and does not need to descend on the slope N. Mowing work on high slope slopes can be done safely, easily and quickly. Also, the weight of the entire mowing work section 5 is reduced by the sled-shaped grounding member 2.
Since the work is received on the ground (grass cut surface) via 0 and 20, the burden on the worker is reduced, and the work is not self-propelled. As a result, the labor required for mowing work is reduced.

In addition to the fact that the vicinity of the front end 53a of the handle 50 is swingably supported in the vertical direction by the shield cover 11, the front end 53a of the handle 50 is connected to the tension coil spring 60. In the case where the ground (high-side upper surface M and slope N) is rough land having a large unevenness or soft ground, the handle 50 is moved in the vertical direction. The sled-like grounding member 2 is not required.
0, 20 can follow the ground moderately and unevenly on the ground, and the front ends of the sled-shaped grounding members 20, 20 (at the time of forward movement).
Alternatively, when the rear end (at the time of retreat) hits an uneven portion of the ground, a stone, or the like, or is caught by a root portion of grass, or sinks into soft ground, and the like, it comes to a dead end. Even if the mowing part 5 is pushed and pulled strongly, the action of the tension coil spring 60 suppresses the moment of reversing the mowing part 5 in the front-rear direction. As a result, the running performance is improved, Can easily break through.

Further, when the vehicle is stopped by an obstacle such as a stone when moving forward (during downward slope), the handle 50
Is swung up and down, so that the front F portion or the rear R portion of the sled-shaped grounding members 20, 20 are lifted off the ground N, M by the urging force (tensile force) of the tension coil spring 60. Since a moment in the direction P or Q in FIG. 3 is generated, when the dead end is caused by an obstacle such as a stone, the handle 50 is not moved up and down as in the related art. Just push and pull the mowing work part 5 in the state where it is rocked,
It is possible to get over obstacles such as stones.

In addition to the above, in the portable shore mower 1 of the present embodiment, the sled-shaped grounding members 20, 20 have front ends and rear ends thereof, respectively, which are located rearwardly from the grounding surface 21.
And a spring plate having folded portions 22 and 24 formed toward the front F, and the sled-shaped ground members 20 and 20 are formed.
Since the shield cover 11 is straddled between the front and rear folded portions 22 and 24 in FIG.
The engine 30 and the like may be supported by the upper surface portion 11A of the shield cover 11. Therefore, the left and right side plate portions 11L and 11R of the shield cover 11 include:
Not so large rigidity and strength are required.
L and 11R may be formed of separate rubber plates or the like, and their sizes, especially the left and right side plate portions 11L and 11R
The distance between them is no longer restricted by the sled-like grounding members 20.

As a result, the shield cover 11 and thus the entire device can be made lighter, the manufacturing cost can be kept low, and the degree of freedom in design can be increased, and the cutting blade 10 and the cutting blade 10 can be cut off. Since the separation distance from the left side plate portion 11L on the side from which the grass is discharged can be made sufficiently large, the grass handling property is also improved.

The sled-shaped grounding members 20, 20 are
The front end and the rear end thereof are folded back through the relatively large arc-shaped portions 22A and 24A so as to draw a U shape from the ground contact surface 21 toward the rear R and the front F, respectively.
4 is formed of a spring plate, so that when the ground (upper surface N and slope M) is rough terrain having large irregularities, the sled-shaped grounding members 20, 20 may be provided with irregularities on the ground, stones, or the like. Even if it hits, it can easily get over them due to its elasticity and flexibility, and as a result,
Glidability and running performance are further improved as compared with a case where a conventional rigid ground contact member is used.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and the design of the present invention is not limited within the spirit of the invention described in the claims. Various changes can be made.

[0038]

As will be understood from the above description, the portable shore mower according to the present invention requires the worker to move laterally on the upper surface of the high shore when performing the mowing work section on the high shore. ,
Since it is not necessary to descend on the slope, mowing work on the high-side slope can be performed safely, easily and quickly, and the equipment can be lightened, the manufacturing cost can be reduced, and the degree of freedom in design can be improved. In addition, weeding, sliding and running properties can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a mowing work section of an embodiment of a portable shore mower according to the present invention.

FIG. 2 is a plan view of a main part of the mowing work section shown in FIG. 1;

FIG. 3 is a left side view of the mowing work section shown in FIG. 2;

FIG. 4 is a left-right central cross-sectional view of the mowing work section shown in FIG. 3;

FIG. 5 is a diagram which is used for describing a high-side slope mowing operation using the portable shore mower shown in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 portable shore mower 5 mowing work section 10 cutting blade 11 shield cover 11A upper surface section 11L left side plate section 11R right side plate section 11u cut grass discharge guide section 20 sled-shaped ground member 21 ground plane section 22, 24 folded section 22A, 24A Arc-shaped part 30 Air-cooled two-stroke gasoline engine (motor) 50 Handle 53 Bifurcated front part M Ground (upper surface on high side) N Ground (slope on high side) R Back F Front

Claims (7)

[Claims] 1. A cutting blade (10), a motor (30) for driving the cutting blade (10), and a shield cover (11) covering a part or all of the cutting blade (10), The motor (30) is a portable shore mower mounted and held on the shield cover (11), wherein the shield cover (11) is a pair of left and right springs that can slide on the ground (N, M). A portable shore mower (1), which is supported by a sled-shaped ground member (20, 20) of a plate. 2. The sled-like grounding member (20, 20) has a front end portion and a rear end portion which are turned back (R) and forward (F) from the grounding surface portion (21), respectively.
4) that the shield cover (11) is attached between the front and rear folded portions (22, 24) of the sled-like grounding member (20, 20). The portable shore mower according to claim 1, characterized in that: 3. The front and rear folded portions (22, 24) of the sled-shaped grounding member (20, 20) are relatively large arc-shaped portions (22A) so as to draw a U-shape from the grounding surface portion (21, 21). 24. A portable shore mower according to claim 1, wherein the mower is folded back through the horn. 4. The shield cover (11) includes an upper surface (11A) for holding the motor (30), and side plate portions (11L, 1L) that hang from left and right ends of the upper surface (11A).
1R), and at least the side plate portion (11L) on the side from which the grass cut by the cutting blade (10) is released.
The portable edward mower according to any one of claims 1 to 3, wherein the projecting portion projects laterally from the sled-shaped grounding member (20) in plan view. 5. A front portion of the side plate portion (11L) located on a side from which the grass cut by the cutting blade (10) is discharged is obliquely rearward from the sled-shaped grounding member (20) in plan view. The portable shore mower according to claim 4, characterized in that it is a guide portion (11u) for discharging the cut grass that extends in the direction. 6. The portable limb according to claim 1, wherein a handle (50) is vertically swingably connected to the shield cover (11). Mower. 7. A bifurcated front part (53) of the handle (50) is swingably connected to the both side plates (11L, 11R) of the shield cover (11) in a vertical direction. The portable shore mower according to claim 5, wherein