JP2518544Y2 - Engine mower - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine mower for cutting grass such as weeds.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a conventional engine mower. In this conventional engine mower, the prime mover 101 is attached to one end 105b of a support handle 105 and the other end of the support handle 105 is attached. A rotary blade 110, which is driven to rotate by the prime mover 101, is attached to the 105a side. There is no particular guard member outside the rotary blade 110, and the rotary blade is installed in a bare state over the entire circumference. Then, when mowing weeds using this engine mower, first, the prime mover 101 is operated to rotationally drive the rotary blade 110, and the operator grips the support handle 105.
The weeds are cut by moving the rotary blade 110 in the left-right direction while holding the handle 106 of FIG. In addition, when weeding along a wall or a ridge sheet, the rotary blade 1
It can be performed while moving 10 parallel to the wall surface or the ridge sheet surface.

[0003]

However, in the conventional engine mower shown in FIG. 5, since the rotary blade 110 is mounted as it is exposed, the rotary blade is used for cutting the weeds growing on the concrete wall, for example. There is a problem that the rotary blade 110 is moved too much toward the concrete wall and the rotary blade 110 directly touches and damages the concrete wall, or when the weeds growing on the ridge are cut, for example, the rotary blade 110 directly moves. There was also a problem of touching the ridge sheet provided along the ridge and damaging the ridge sheet. In addition, when weeding along the wall surface or the ridge sheet surface, the support handle 105 is placed in a state close to the wall surface or the like, and the mower is moved parallel to the wall surface or the like (rotary blade 110). Should be moved parallel to the ridge sheet surface), but in that case,
The tip side of the support handle 105 (rotary blade 11 due to resistance at the time of cutting)
0) may swing to the left and right, at which time the rotary blade 110
There is a great risk that the will contact the ridge sheet surface. Therefore, conventionally, the weeds growing on the ridge sheet are actually hand-cut (performed in a posture in which the waist is bent), which causes a problem such as a backache.

In view of the above problems of the conventional engine mower, the present invention prevents the rotary blade from abutting against the wall surface and damaging the grass when cutting grass, and damages the ridge sheet by the rotary blade. It is an object of the present invention to provide an engine mower designed to prevent the occurrence of damage.

[0005]

The present invention has the following structure as a means for solving the above problems. That is,
The present invention is an engine mowing machine in which a prime mover is attached to one end of a support handle and a rotary blade that is driven to rotate by the prime mover is attached to the other end of the support handle. The member is mounted, and the guard part of the guard member is located near the upper part of the rotary blade and immediately outward of the outer circumference of the rotary blade, and the angle formed by the support handle about the center of rotation of the rotary blade is leftward or rightward. About 90
It is characterized in that it is installed at a position of 0 ° and the position of the guard can be adjusted inward and outward with respect to the outer circumference of rotation.

[0006]

In the engine mower of the present invention, the rotary blade has a guard portion which guards the outer circumference of the rotary blade. This guard portion is located near the upper portion of the rotary blade and immediately outside the outer periphery of the rotary blade. It is installed at a position where the angle formed with the support handle about the center of rotation is about 90 ° to the left or right. Therefore, when weeding with this mowing machine, even if the guard part is installed at a predetermined position (guard position), the guard part does not interfere much. When using this engine mower to mow weeds near the wall surface or the ridge sheet surface (hereinafter simply referred to as the wall surface), support the guard part of the guard member facing the wall surface. The handle is placed almost parallel to the wall surface, and in that state, the rotary blade is swung left and right, or the mower is moved parallel to the wall surface. At this time, even if the tip side of the support shaft largely swings toward the wall surface, the guard portion comes into contact with the wall surface before the rotary blade, and therefore the rotary blade can be prevented from directly contacting the wall surface. Further, since the guard portion is adjustable inward and outward with respect to the rotary blade, the guard portion can be adjusted inward and outward according to the diameter of the rotary blade.

[0007]

EFFECT OF THE INVENTION According to the engine mower of the present invention, for example, when weeding along a wall surface, when the guard part is opposed to the wall surface, the rotary blade largely swings toward the wall surface. Even in this case, since the guard portion comes into contact with the wall surface first, the rotary blade does not come into contact with the wall surface. As a result, there is an effect that the rotary blade, the wall surface (or the ridge sheet) and the like can be prevented from being damaged.

Further, according to the engine mower of the present invention, the guard portion is located near the upper part of the rotary blade, and is located near the outer circumference of the rotary blade, and the angle formed by the support handle is centered on the rotation center of the rotary blade. Since it is installed at a position of approximately 90 ° in the right direction or the right direction, even if the rotary blade can be guarded on the left or right side, the guard portion is not so disturbing. .

Further, according to the engine mower of the present invention, since the protruding width of the guard portion can be adjusted according to the diameter of the rotary blade, even a single guard member can be used in various types having different diameters. There is also an effect that can be applied to the rotary blade of.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 4. An engine mower X of this embodiment has one end (rear end) 5b side of a support handle 5 as shown in FIG. The motor 1 is provided, and a rotary blade 10 that is rotationally driven by the motor 1 and a guard member 15 for guarding the outer periphery of the rotary blade 10 are provided on the other end (tip) 5a side of the support handle 5. .

The support shaft 5 has an appropriate outer diameter (for example, an outer diameter of 3 to 3).
It is made of a steel pipe having a predetermined length (for example, about 1.5 m) of about 5 cm. As shown in FIG. 2, a rotary shaft 7 for transmitting the rotation of the prime mover 1 to the rotary blade 10 is inserted in the support shaft 5. Further, a handle 6 is attached to a position slightly closer to the prime mover side than the central portion of the support handle 5 so that an operator holds the handle 6 by hand for mowing work. A lever 8 for controlling the rotation speed of the prime mover 1 is attached to a position near one of the handle portions 6A of the handle 6 and the handle portion 6A.

As the rotary blade 10, a disk-shaped blade having a diameter of about 20 cm to 30 cm is adopted, and the outer peripheral portion thereof is 4
A total of four blades 10A, 10A, ... Are formed at equal positions. As shown in FIGS. 2 and 3, the rotary blade 10 is horizontally driven on the other end (tip portion) 5a side of the support handle 5 via a transmission mechanism 12 such as a bevel gear (not shown). It is connected to the rotary shaft 7.

As shown in FIG. 4, the guard member 15 includes a guard rod 17 for protecting the blades 10A, 10A of the rotary blade 10 and a guard mounting member 20 for mounting the guard rod 17 on the support handle 5. It consists of and.

The guard bar 17 is formed by bending a round steel bar having a diameter of 1 to 1.5 cm and a length of about 20 cm into a substantially L shape. One end side of the guard rod 17 serves as a guard portion 17A for guarding the rotating outer periphery 10a of the rotary blade 10, while the other end side serves as a mounting piece 17B attached to the guard mounting member 20. A pipe material 19 is fixedly attached to the mounting piece 17B of the guard rod 17.

As shown in FIG. 4, the guard mounting member 20 is sandwiched between the base 24 relating to both mounting to the support handle 5 and guard bar 17, and the support handle 5 between the upper surface of the base 24. It has an upper holding member 22 to be worn and a lower holding member 23 to hold the guard rod 17 between the lower surface of the base 24 and the lower holding member 23. The guard mounting member 20 is mounted on the base 24 with the bolts 43, 43 with the base 24 and the upper holding member 22 sandwiching the proper position near the tip of the support handle 5 from above and below. By tightening, the base 24 and the upper sandwiching member 22 are fixed to the support handle 5, and the base 24 and the lower sandwiching member 23 cause the mounting piece 17B of the guard bar 17 to move in a direction orthogonal to the support handle 5. The guard rod 17 is sandwiched and held by sandwiching it from above and below in a state of being directed and tightening the lower holding member 23 to the base 24 with bolts 45, 45.

In this guard mounting member 20, the entire guard mounting member 20 can be slid with respect to the support handle 5 by loosening the bolts 43, 43 for tightening the upper holding member 22. If the bolts 45, 45 for tightening the side holding member 23 are loosened, the guard rod 17 can be slid in the direction orthogonal to the support handle 5, that is, inward and outward with respect to the rotary blade 10, and the guard portion 17A can be rotated up and down. I'm trying to make money.

In the guard member 15, the guard portion 17A is located in the vicinity of the upper side of the rotary blade 10 and at the rotary blade 10.
For example, at a position protruding by about 3 mm outward from the outer circumference 10a of rotation of the rotating shaft 10, the angle formed by the support handle 5 about the center of rotation of the rotary blade 10 is approximately 9 on the left side when viewed from the base end side of the support handle.
It is fixed with it set to the position of 0 °. The guard member 15 can be projected to either the left or right side of the rotary blade 10 by changing the direction of the guard rod 17 (in this case, the guard portion 17A when viewed from the base end side of the support handle 5). Can be projected to the left and right sides of the rotary blade 10), so that both right-handed people and left-handed people can handle it.

The engine mower of this embodiment has a guard portion 17A for guarding the rotating outer periphery 10a of the rotary blade 10. The guard portion 17A is located near the upper portion of the rotating blade 10 and on the rotary outer periphery 10a. The nearest outside and the rotary blade 1
It is installed at a position where the angle formed with the support handle 5 about the rotation center of 0 is approximately 90 ° to the left or to the right. Therefore, when weeding with this mower, the guard part 17a
Even if is installed at a predetermined position (guard position), the guard portion 17a does not interfere much. Also, for example, near a concrete wall or a ridge sheet (hereinafter simply referred to as a wall)
When weeding weeds are cultivated as follows. First, the guard portion 17A of the guard member 15 is positioned and fixed near the upper part of the rotary blade 10 and near the outer circumference 10a of the rotary blade 10 corresponding to the diameter of the rotary blade 10. Then, in a state where the guard portion 17A faces the wall surface K (at this time, the support handle 5 faces substantially parallel to the wall surface), the prime mover 1 is operated to rotationally drive the rotary blade 10, and the operator grips the handle 6. Grasp the parts 6A, 6A and attach the rotary blade 10 to the wall surface K
Mow the weeds that grow near the wall while moving in the direction of approaching or separating or parallel to it. At this time, even if the operator moves the rotary blade 10 too much to the wall surface K side,
As shown in FIG. 7, since the guard piece 17A first contacts the wall surface K, the rotary blade 10 does not touch the wall surface K and the rotary blade 1
It is possible to prevent 0 or damage to the wall surface. or,
Similarly, when cutting weeds near the ridge sheet, the guard member 15
The guard portion 17A of the rotary blade 10 comes into contact with the ridge sheet first.
Since it can be prevented from touching the ridge sheet, the rotary blade 10 does not damage the ridge sheet.

Further, in this engine mower, even when the rotary blades 10 having different diameters are used, the single guard rod 1 is adjusted by adjusting the protruding width of the guard portion 17A.
You can deal with 7. In addition, when cutting grass in a place where there is no obstacle, the guard portion 17A of the guard member 15 is attached to the chain line 1 in FIG.
As shown by 7 ', it can be directed upward so as not to interfere with the mowing work, and its usability can be improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an engine mower according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

FIG. 4 is an exploded perspective view of a guard member of the engine mower of FIG.

FIG. 5 is an overall perspective view of a conventional engine mower.

[Explanation of symbols]

Reference numeral 1 is a prime mover, 5 is a support handle, 5a and 5b are end portions, 10 is a rotary blade, 10a is a rotating outer periphery, 15 is a guard member, and 17A is a guard portion.

Claims (1)

(57) [Scope of utility model registration request] 1. A rotary blade in which a prime mover (1) is mounted on one end (5b) side of a support handle (5), and is rotationally driven by the prime mover (1) on the other end (5a) side of the support handle (5). An engine mower having (10) attached, wherein a rotary outer circumference (10) of a rotary blade (10) is attached to the support handle (5).
A guard member (15) for guarding a) is attached, and further, a guard part (17A) of the guard member (15)
In the vicinity of the upper part of the rotary blade (10) and the outer circumference of the rotary blade.
(10a) in the immediate outermost direction, and the rotation of the rotary blade (10)
The angle formed with the support handle (5) about the center of rotation is left
Installed at a position that is approximately 90 ° to the right or to the right
Further, the guard part (17A) can be adjusted inward and outward with respect to the rotating outer circumference (10a) .