JPH11168934A - Weeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weeder capable of performing precise and highly efficient weeding operations. SOLUTION: This weeder is equipped with a weeding piece 2 having blade parts 3 in which the front ends 4 are formed so as to be forcible into soil and a driving means for driving the weeding piece 2 having the front ends 4 of the blade parts 3 installed so as to freely shake back and forth by the driving means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weeding machine for digging up soil to remove grass, and more particularly to a weeding machine for removing grass by swinging a front end of a blade portion of a weeding piece.

[0002]

2. Description of the Related Art Conventionally, weeding machines of this kind have been disclosed in Japanese Patent Application Laid-Open No. 55-111745,
No. 10 publication is known. In the weeding machine described in the official gazette, the former is provided with a horizontally rotating disk, and a cutting blade is protruded radially on the outer peripheral edge of the disk, and a conical scratching claw is provided on the lower surface of the disk. The latter is provided with a rotating weeding tool having a shank, and the tip of the shank of the weeding tool is sharpened, and a pair of cutting blades are attached to the shank toward the rear. It is formed to be inclined so as to spread.

In the conventional weeding machine, in the former case, a cutting blade is cut by cutting a blade of grass that is exposed from the soil by rotating a disk, and a scratching claw is formed by the rotation of the disk. In the latter case, the weeding tool is rotated by scraping the roots of the grass to tear the roots of the grass, rotating the weeding tool by piercing the sharp end of the shaft in the center of the grass in plan view, and rotating the cutting blade. By cutting grass roots in the soil,
It removes grass.

As described above, in a conventional weeding machine,
In both cases, by rotating a disc or a rotating tool, a scratching claw or a cutting blade is rotated to cut and remove grass roots.

[0005]

However, in the conventional weeding machine described above, in both cases, the roots of the grass are cut and removed by rotating them. In many cases, the grass often wraps around the rotating part, and it is necessary to resume work after removing the wound grass. Also, when working in the corner of a garden surrounded by fences, etc., the rotation was hindered by the fence and the blade could not reach the corner and it was not possible to remove the grass that grew in the corner, so the work was once completed It was necessary to interrupt and manually remove the grass. Thus, in both of the above weeding machines,
There are many restrictions on the workable area and the types of grass that can be removed, and the work must be interrupted many times during the work, resulting in poor work efficiency.

Further, in the former weeding machine, which removes grass indefinitely by rotation, it is suitable for uniformly removing grass that has grown in a certain area. When grass to be removed grows between flowers and the like that are not desired, only the grass cannot be removed accurately. Therefore, in order to remove such grass, only the grass needs to be removed manually. On the other hand, the latter weeding machine is suitable for the work of removing grass one by one individually, but it is extremely inefficient when the grass growing around is removed at the same time. It is.

In any case, in the conventional weeding machine, since the grass is removed from the soil by rotating the blade, there are restrictions on the work such as the type of the target grass and the workable area. However, work efficiency was poor.

In addition, since both of them remove grass by rotation, pebbles and soil around the grass are scattered around by the rotation, and the rotating blade is always in contact with the feet to prevent damage. You must be careful with your feet. Therefore, it is necessary for the worker to perform the work while paying attention to his own damage and also taking into consideration the surroundings, and the burden on the worker during the work is large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a weeding machine which enables accurate and highly efficient weeding operation.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a weeding machine according to the present invention has a blade portion 3 having a front end 4 formed so as to be able to be pushed into soil. A weeding piece 2 and a driving means 5 for driving the weeding piece 2, wherein the weeding piece 2 is provided with the front end 4 of the blade portion 3 swingable back and forth by the driving means 5. It is characterized by.

In the weeding machine according to the present invention, the weeding piece 2 is driven by the driving means 5 to swing the front end 4 of the blade 3 in the front-rear direction, so that the front end 4 of the blade 3 is placed in the ground. The soil is dug up by the blade portion 3 swinging in the front-rear direction to remove grass roots.

Therefore, for example, when grass is removed one by one, the soil at the root portion of the grass is excavated by the swinging blade portion 3 to remove the grass together with the root. In this case, by continuously digging up the soil while maintaining the state where the blade portion 3 is pushed into the soil, it is possible to continuously remove the grass on the entire surface.

Further, when removing the grass growing at the corner of the garden or at the wall, the front end 4 of the blade 3 is made to reach the root of the grass by excavating the soil along the wall. And remove grass while digging up the soil.

In particular, by swinging the front end 4 of the blade portion 3 not only in the front-back direction but also in the left-right direction, it is possible to excavate soil more widely in the left-right direction to remove grass. You can.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 is a weeding machine main body having a switch 1b, 2 is a weeding piece protrudingly provided on the front 1a side of the weeding machine main body, and the weeding piece 2 is
The front end 4 has the blade portion 3 formed so as to be able to be pushed into the soil.

More specifically, the blade 3 has a front end 4 formed in a substantially triangular shape with an acute angle.
Are formed in a substantially fork shape protruding from the front side. The weeding piece 2 is preferably formed of a wear-resistant material such as bakenit steel, or a metal material whose surface is heat-treated such as hard chrome plating. Blade spillage or the like due to contact with the like can be suppressed.

As shown in FIGS. 2 and 3, a driving means 5 for driving the weeding piece 2 is stored on the front 1a side of the weeding machine main body 1. The drive means 5 includes a drive motor 6 for driving the weeding piece 2 by operating the switch 1b, a reduction gear unit 7 connected to the drive motor 6 for reducing the rotation speed of the drive motor 6, A converter 8 for converting the rotation reduced by the reduction gear 7 into a reciprocating motion. The converter 8 allows the weeding piece 2 to be driven horizontally.

In the driving means 5, as shown in FIG. 3, the driving motor 6 is provided so as to be perpendicular to the weeding piece 2 in a side view so that a rotating shaft 9 stands upright in a vertical direction. The reduction gear portion 7 is connected to a rotating shaft 9 protruding from the shaft.

The reduction gear portion 7 includes a pinion gear 10 externally fitted to the tip of the rotary shaft 9 and the pinion gear 1.
The intermediate gear 12 is engaged with the teeth of the outer peripheral edge of the intermediate gear 12 and rotates about the shaft 11, and the output gear 14 is engaged with the teeth of the intermediate gear 12 and rotates about the output shaft 13. . As described above, the reduction gear portion 7 gradually reduces the rotation speed of the drive motor 6 by the intermediate gear 12 and the output gear 14 having the larger diameter in order from the small-diameter pinion gear 10, while gradually reducing the drive torque. It is formed so as to be larger.

An eccentric cam 15 is formed on the lower surface of the output gear 14 so as to protrude in the axial direction, and a ring-shaped sliding ring 1 is formed on the outer peripheral surface of the eccentric cam 15.
6 is externally fitted. That is, the eccentric cam 15 has an outer peripheral surface formed in a circular shape, and the center A of the outer peripheral surface is
The eccentric cam 15 is formed coaxially with the eccentric cam 15 by being provided at a position eccentric from
The outer peripheral surface of the sliding ring 16 is formed as a cam surface 17.

The weeding piece 2 is connected to the cam surface 17 on the sliding ring 16. That is, a guide hole 18 having substantially the same diameter as the cam surface 17 is formed on the rear side of the weeding piece 2, and the slide ring 16 is inserted into the guide hole 18, and the cam surface 17 is inserted into the guide hole. The guide surface 18a, which is the inner wall of the, is slidably provided by pressing the guide surface 18a.

A pair of guide pieces 19 and 20 are vertically arranged on the weeding machine main body 1 at a certain interval in the vertical direction. 2 are provided so as to be sandwiched and slidable.

The weeding piece 2 is supported by the upper and lower guide pieces 19 and 20 by a supporting shaft 25. That is,
At positions protruding from the front 1a side of the weeding machine main body 1 (between the guide holes 18 and the blade portions 3), as shown in FIGS. A long hole 21 is formed, and in the long hole 21, as shown in FIGS. 3 and 4, both guide pieces 19 and 20 are vertically moved by a guide shaft 24 having a bolt 22 and a nut 23 as a connecting tool. The weeding pieces 2 can be supported by being connected and being provided so that the guide shaft 24 can be in contact with the inner wall of the long hole 21.

As described above, the support shaft portion 25 is constituted by the long hole 21 and the guide shaft 24, and the support shaft portion 25 and the cam surface 17 are formed.
And the guide surface 18a, the converting portion 8 is provided, and the converting portion 8 is provided so that the front end 4 of the blade portion 3 can swing back and forth and right and left.

That is, the weeding piece 2 is rotated by the cam surface 17 pressing the guide hole 18a.
The back end of the blade 3 is horizontally pivoted back and forth and left and right, and the weeding piece 2 is pivotally supported by the support shaft portion 25, so that the front end 4 of the blade portion 3 located on the front side is provided to swing back and forth and left and right. Become.

Therefore, the front end 4 of the blade 3 of the weeding piece 2 is
It is provided so as to be able to swing back and forth with respect to the weeding machine main body 1 and to be able to swing in the left and right direction so as to swing with respect to the weeding machine main body 1.

Next, the use state of the weeding machine configured as described above will be described with reference to the drawings. First, the drive motor 6 operates by pressing the switch 1b,
The driving force is transmitted from the rotation shaft 9 via the reduction gear unit 7 and is converted by the conversion unit 8 into horizontal swing. At this time, as shown in FIG. 5, when the drive motor 6 makes one rotation, the cam surface 17 also makes one rotation with eccentricity, so that the weeding piece 2 becomes the guide shaft 2.
4, the front end 4 of the blade portion 3 swings back and forth and right and left while making one turn in a circular motion. Also, weeding pieces 2
Since the long hole 21 abutting on the guide shaft 24 is formed long in the front-rear direction, the weeding piece 2 can be swung in the front-rear direction.

After driving the drive motor 6 to make the weeding piece 2 swing, the front end 4 of the blade 3 is pushed into the root soil 31 of the grass 30 as shown in FIG. Then, the soil 31 at the root of the grass 30 is crushed by the weeding pieces 2, and the blade 3 is lifted and pushed into the weeding machine body 1.
Is raised from the surface of the soil 31 so that the grass 30 and the roots
Dug out from.

Accordingly, the grass 30 can be individually removed from the soil 31 while the soil 31 is dug up by the weeding pieces 2. For example, the grass 30 covered with a flower or the like which is not removed can be accurately removed one by one. When the grass 30 is continuously removed, the weeding machine main body 1 is pushed forward while the state where the front end 4 of the blade portion 3 is pushed into the soil 31 to grow around the area. It is also possible to efficiently remove grass 30 while continuously excavating it from the root.

Further, when removing grass 30 growing in a narrow portion surrounded by a fence, such as a corner of a garden, or grass 30 growing along the side of a fence, the weeding piece 2 is also used. Because it swings rather than rotates, the front end 4 of the blade part 3 can reach the edge of the fence or the corner of the garden, and also remove the grass 30 growing from the root from the root. You can do it.

Further, since the blade 30 is swung to dig up the soil 31 to remove the grass 30, even if the grass 30 is vine-like, it is less likely that the grass 30 is wound around the blade 3 and the like and the work is interrupted. In addition, the weeding operation can be continuously performed regardless of the type of the grass 30, and the adaptability to the grass 30 is larger than that of the related art.

Since the weeding piece 2 is formed of a wear-resistant material, wear by the soil 31 and spilling of the blade by pebbles can be suppressed, and the weeding piece 2 can be used for a long period of time.

Further, since the blade portion 3 is swung, the work can be performed safely and the soil 31 is dug up to remove the grass 30.
There is no danger of scattered stones or pebbles, and consideration for surroundings during work is reduced, so that the burden on the operator can be significantly reduced as compared with the related art.

In the above embodiment, the front end 4 of the blade portion 3 is swung back and forth and left and right.
It may be configured to swing only in the front-back direction. That is, as shown in FIG. 7, a long slot-like guide hole 18 is formed in the rear side of the weeding piece 2 in the horizontal direction in the plan view (the width direction of the weeding piece 2). By making the distance L between the inner walls parallel to each other substantially equal to the diameter of the cam surface 17 of the sliding ring 16, the amount of swinging of the weeding piece 2 in the left-right direction by the rotation of the cam surface 17 is reduced. It may be configured to swing in the direction.

In this configuration, as shown in FIG. 8, when the cam surface 17 makes one rotation, the weeding piece 2 makes one reciprocation in the front-rear direction, thereby suppressing the swing of the front end 4 of the blade portion 3 in the horizontal direction. It is possible to do. Therefore, the front end 4 of the blade 3 is
1, it swings only in the front-rear direction, and particularly when the distance between the flower that is not desired to be removed and the grass 30 that is to be removed is close, without affecting the flower, It is possible to more reliably remove only the grass 30 to be cut off, and it is also possible to reduce the possibility that the blade portion 3 comes into contact with the fence even when working along the fence.

However, by swinging the front end 4 of the blade portion 3 not only in the front-back direction but also in the left-right direction, the area in the horizontal direction from which the grass 30 can be removed at one time increases, so that the grass 30 can be more efficiently removed. There are advantages that can be eliminated.

The shape of the weeding piece 2 may be other than the above-mentioned fork shape. For example, as shown in FIG. 9, it may be formed in a scoop shape. If the front end 4 of 3 is formed so as to be able to be pushed into the soil 31, it is within the range intended by the present invention.

Various configurations can be adopted for the conversion section 8 including the support shaft section 25 and the driving means 5, and the front end 4 of the blade section 3 can be swung at least in the front-back direction. Anything that falls within the intended scope of the present invention.

[0039]

As described above, in the weeding machine according to the present invention, by providing weeding pieces in which the front end of the blade portion can swing back and forth by the driving means, the grasses can be individually and accurately obtained one by one. In addition to this, it is also possible to continuously and efficiently remove the whole grass.

Further, since the grass is removed by swinging the front end of the blade, the work is not interrupted by the type of grass and the place where the grass grows as in the prior art, and the work is continuously performed. As a result, the work efficiency can be improved as compared with the conventional case.

In particular, by swinging the front end of the blade part back and forth and right and left as described in claim 2, the area for removing grass in the left and right direction can be improved, so that the efficiency of weeding work is further improved. be able to.

[Brief description of the drawings]

FIG. 1 is a plan view of a weeding machine according to an embodiment of the present invention.

FIG. 2 is a front view including a partial cross section of the weeding machine of one embodiment.

FIG. 3 is a sectional view showing a main part of the weeding machine of one embodiment.

FIG. 4 is a schematic plan view showing a main part of the weeding machine of one embodiment.

FIG. 5 shows an outline of a main part of the weeding machine of one embodiment,
(A) is a plan view in a swinging state to the left, (B) is a plan view in a swinging state to the rear, and (C) is a plan view in a swinging state to the right.

FIG. 6 is a front view including a partial cross section showing a use state of the weeding machine of one embodiment.

FIG. 7 is a schematic plan view showing a main part of a weeding machine of another embodiment.

FIG. 8 shows an outline of a main part of a weeding machine of another embodiment,
(A) is a plan view in a swinging state to the left, (B) is a plan view in a swinging state to the rear, and (C) is a plan view in a swinging state to the right.

FIG. 9 is a perspective view showing a main part of a weeding machine of another embodiment.

[Explanation of symbols]

 2 weeding pieces, 3 blades, 4 front ends, 5 driving means

Claims (2)

[Claims] 1. A weeding piece (2) having a blade (3) whose front end (4) is formed so as to be able to be pushed into the soil, and a driving means (5) for driving the weeding piece (2). A weeding machine, wherein the weeding piece (2) is provided with a front end (4) of the blade portion (3) swingably back and forth by the driving means (5). 2. A weeding machine according to claim 1, wherein said weeding blade (2) is provided with a front end (4) of said blade part (3) swingable back and forth and left and right by said driving means (5). .