JP2000270653A - Guide for bush cutter and bush cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide for a bush cutter having an extremely simple structure and no fear of rolling a cut material, a foreign matter, etc., between a guide plate and a rotary knife, attachable to various bush cutters without using a specific attachment tool, etc. SOLUTION: This guide is equipped with a connecting part 9 to be linked to a pipe handle part 5 or a head 4 of a bush cutter, an arm part 10 which is extended from the connecting part 9 and is brought close to the outer peripheral edge part of a rotary knife 3 while inclining in the rotation direction of the rotary knife 3 and a circular-arc guide part 11 which is extended from the tip of the arm and extended along a part of the outer peripheral edge in the rotation direction in a projected state from the outer peripheral edge of the rotary knife 3 to the outside in the radius direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mowing machine carried by an operator to trim weeds and the like.

[0002]

2. Description of the Related Art For example, as described in Japanese Utility Model Application Laid-Open No. Sho 58-105823, a cutting portion provided with a guide plate capable of moving in and out of the turning radius of a rotary blade is provided on a head portion supporting a cutting blade. Payment machines have been proposed.

[0003] By providing the guide plate, when weeding around a wall, a fence, or a tree, it is possible to perform an operation such that the guide plate is along the wall or the like. Thus, it is possible to prevent the rotary blade from contacting the wall or the like and causing damage to the rotary blade or the wall.

Further, as disclosed in Japanese Utility Model Publication No. 2-9622, the rotary blade extends radially outward from an upper central portion of the rotary blade and has a front end portion covering the edge of the rotary blade. There has been proposed a safety protector formed of a bent wire. By providing the safety protection device, it is possible to prevent the rotating blade from coming into contact with a wall or bouncing off a stone, similarly to the mower described in the above publication.

[0005] Further, there has been provided a mower that is configured so that mowing work can be performed by rotating a resin cord such as nylon instead of a metal rotary blade. By using the resin cord, the wall or the rotary blade is not damaged even if it collides with the wall or the stone, and the mowing operation of the portion along the wall or the like can be performed safely.

[0006]

Problems to be Solved by the Invention
The guide plate described in Japanese Patent No. 23 has a rectangular shape, and extends radially outward from a central portion along the upper surface of the rotary blade. Therefore, one end side edge is arranged so as to face each of the adjacent cutting blades with the rotation of the rotary blade. For this reason, cut pieces such as weeds cut in the vicinity of the guide plate are rebounded toward the side edges of the guide plate, and these cut pieces are easily entangled between the guide plate and the rotary blade. .

In addition, the gap between the guide plate and the rotary blade is small, and the same gap is formed over the entire radius of the rotary blade. The rotation of the blade may be hindered.
Furthermore, when the sharpness of the rotary blade is reduced, weeds or the like that have come into contact with the cutting blade of the rotary blade may be sandwiched between the side edges of the guide plate before cutting. For this reason, the load on the rotary blade is increased, and vibration or the like may occur, or the guide plate may be damaged.

The guide plate is configured so as to be accommodated radially inward along the upper surface of the rotary blade. However, when a cut piece or a foreign substance falls on the upper side of the rotary blade, the guide plate and the guide plate are connected to each other. It will be caught between the rotary blades. Therefore, it cannot be said that the security is high.

[0009] The safety protector of the mower described in Japanese Utility Model Publication No. 2,9622 also has a structure in which each frame rod is radially extended radially outward from the center along the upper surface of the rotary blade. Therefore, a cut object or a foreign matter is easily caught between the rotary blade and each frame rod. Further, a wire or a string-like foreign matter may be entangled with the frame rod and hinder the rotation of the rotary blade. Moreover, it takes time and effort to remove the safety protector, so that it becomes difficult to remove the entangled string and the like. In addition, since the number of parts is increased, the weight of the mower is increased, and a problem that operability is deteriorated is likely to occur.

[0010] In particular, the conventional mowers described in the above publications are configured to be suitable for performing mowing work along a wall or the like, but mower or the like along the wall or the like. Then, a problem that the cut object collides with a wall or the like and rebounds to the brush cutter and entangles with the guide plate or the like easily occurs.

On the other hand, a mower using the above resin cord has a problem that the cutting efficiency is lower than that of a metal rotary blade, so that the working efficiency is greatly reduced.

The present invention solves the above two problems, has a very simple structure, has no danger of cuttings or foreign matter being caught between the rotary blade, and uses a special mounting tool or the like. It is an object of the present invention to provide a brush cutter guide that can be attached to various brush cutters without any problem.

[0013]

Means for Solving the Problems To solve the above problems, the present invention takes the following technical means.

The guide according to the present invention has a power source at a base end, a head for rotatably supporting a rotary blade at a distal end side, and a power transmission shaft inserted between the power source and the head. It is attached to a mower configured to rotate the rotary blade through the power transmission shaft that is rotated by the power source and connected by a pipe-shaped handle portion.

The power source is not particularly limited, and can be applied to a mower equipped with various power sources such as an electric motor and a gasoline engine. Further, the power transmission method from the power source to the power transmission shaft and the power transmission method from the power transmission shaft to the rotary blade are not limited, and the present invention can be applied to mowers employing various types.

The guide according to the present invention comprises: a connecting portion connected to the pipe-shaped handle portion or the head; a guide extending from the connecting portion and being inclined toward the rotating direction of the rotary blade; An arm portion proximate to the outer peripheral edge, and an arc-shaped guide extending from the distal end of the arm portion and extending in a rotational direction along a part of the outer peripheral edge while projecting radially outward from the outer peripheral edge of the rotary blade. Unit.

The guide according to the present invention can be made of various materials as long as it has sufficient strength to guide the tip of the mower. For example, a rod-shaped or pipe-shaped metal material can be employed as the arm and the arc-shaped guide.

The connecting portion is connected to the pipe-shaped handle or the head. The connection method is not particularly limited. For example, when the connecting portion is configured so as to sandwich the pipe-shaped handle portion, the connecting portion can be mounted on various conventional mowers. Further, the connecting portion can be connected to the top of the bed using a bolt or the like. Further, a dedicated fitting may be provided on the pipe-shaped handle or the head.

In the guide according to the present invention, the arm extends from the connecting portion so as to approach the outer peripheral edge of the rotary blade while being inclined in the rotation direction of the rotary blade. That is, the portion other than the arc-shaped guide portion that guides and protects the rotary blade is provided apart from the rotary blade, so that the cut-off object or the like does not fall into the gap between the arm portion.

Further, since the rotating blade is inclined toward the rotating direction of the rotating blade and is close to the outer peripheral edge of the rotating blade, a cut object or a foreign object falling on the rotating blade is guided by the arm. It is easily discharged from the rotary blade. Therefore, there is no possibility that foreign matter is caught between the rotary blade and the arm portion or the arc-shaped guide portion and hinders the rotation of the rotary blade.

As for the shape of the arm, the edge of the arm opposite to the direction of rotation of the rotary blade is defined by the radius line of each part of the rotary blade facing directly below. On the other hand, it is preferable to form it in a plan view shape inclined in the rotation direction.

By adopting the above-mentioned shape, the foreign matter on the rotary blade can be smoothly guided radially outward and discharged from the rotary blade.

Since the arc-shaped guide portion is provided along the outer peripheral edge of the rotary blade in a state protruding radially outward from the outer peripheral edge of the rotary blade, the arc-shaped guide portion extends along a side surface such as a wall. Even when the work is performed, the rotating blade does not contact the wall surface. Therefore, weeds and the like around the standing trees and along the fences can be easily cut off. In addition, it is possible to efficiently perform a mowing operation on a curved wall surface or a portion along a wall surface having irregularities.

Further, since the arc-shaped guide portion is also formed so as to extend from the tip of the arm portion in the rotation direction of the rotary blade, even if a cut object collides with the arc-shaped guide portion, the rotary blade is not rotated. There is no risk of hindering rotation or jamming.

This type of mower to which the guide according to the present invention is attached is carried and used by a user, and is required to be light in weight in order to enhance operability. In the guide according to the present invention, as in the invention described in claim 2, the arm portion and the arc-shaped guide portion can be formed by bending a rod-shaped or pipe-shaped member. Therefore, since the main part can be constituted by a single rod-shaped member, it is very lightweight, and the weight does not increase and the operability of the mower does not decrease.

According to the invention described in claim 4 of the present application, the arc guide portion is formed in one of the left and right regions of the rotary blade defined by a plane of symmetry of the rotary blade including the axis of the pipe-shaped handle portion. Are formed along a part of the outer peripheral edge of the rotary blade.

That is, the guide according to the present invention is preferably provided on one side of the pipe-shaped handle portion when viewed from the user side. Therefore, the other rotary blade is in an exposed state, and the mowing operation can be performed as in the related art.

Usually, the pipe-shaped handle portion of the mower is held under the operator's armpit, and the mowing operation is performed while swinging the head left and right, but the head is swung to one side while moving forward. Sometimes work is performed while moving forward so as to mow weeds and the like. Therefore, by mounting the guide such that the arc-shaped guide portion according to the present invention is located on the side opposite to the side on which the mowing operation is performed, the guide does not interfere with the normal mowing operation. .

The guide according to the present invention is preferably mounted so as to extend to the right side of the pipe-shaped handle when viewed from the operator holding the mower. This is because weeds and the like are often cut off when the head is swung from right to left. Of course, when mowing is performed when shaking in the opposite direction to the above, it may be provided to extend to the opposite side.

In the invention described in claim 5 of the present application, the arm portion and the arc-shaped guide portion extend to a region of the left and right regions opposite to the user with the pipe-shaped handle portion interposed therebetween. At the same time, the arc-shaped guide portion is set at 40 °
It is formed along the range of 60 °.

It is not necessary to provide the arc-shaped guide portion over the entire edge of the rotary blade, but it is sufficient to provide the arc-shaped guide portion in a range where it can be brought into contact with a wall or the like to perform the work. Further, in order to function as a guide for the mowing operation, it is preferable to form the guide in the range of 40 ° to 60 ° around the radius line of the rotary blade orthogonal to the pipe-shaped handle. When the angle is 40 ° or less, the range in which the rotary blade can be guided is too narrow. On the other hand, when the angle is 60 ° or more, the cutting edge range in which mowing can be performed is reduced.

The invention described in claim 6 of the present application is configured so that the connecting portion can be detachably connected to the pipe-shaped handle portion or the head.

The structure of the connecting portion is not limited, and various structures can be adopted as long as the connecting portion can be detachably connected to the pipe-shaped handle portion or the head. For example,
Both sides of the two members sandwiching the pipe-shaped handle from above and below can be configured to be tightened with bolts and nuts.
With such a configuration, it is possible to easily attach to various conventional mowers. Of course, a dedicated screw or the like may be provided on the pipe-shaped handle or the top of the head by welding or the like, and connected to this screw. In addition, by configuring the connecting portion so that it can be easily attached to and detached from the pipe-shaped handle portion or the head, it is possible to easily remove the guide when not using the guide.

According to the invention described in claim 7 of the present application, the connecting portion is provided with a connecting mechanism capable of detachably connecting the arm portion.

Even when the connecting portion is fixedly provided on the pipe-shaped handle portion or the head, the arm portion and the arc-shaped guide portion are formed separately from the connecting portion and can be detachably attached to the connecting portion. By connecting, the same operation and effect as the invention described in claim 5 can be obtained. In addition, various guides can be attached according to the purpose of use and the like.

According to the invention described in claim 8 of the present application, the arc-shaped guide portion and the arm portion can select a work position close to the outer peripheral edge of the rotary blade and a retracted position separated from the rotary blade. As described above, a connection mechanism is provided that can connect the connection portion to the pipe-shaped handle portion or the head.

Only when the guide is used, it is brought close to the peripheral edge of the rotary blade. When not used, the guide is separated from the rotary blade without being removed from the mower and held at a position where it does not interfere. is there. Even when it is not used, by attaching it to the brush cutter body, there is no danger of loss and the usability is greatly improved.

According to the invention described in claim 9 of the present application, the arc-shaped guide portion and the arm portion can select between a working position close to the outer peripheral edge of the rotary blade and a retracted position separated from the rotary blade. As described above, a connecting mechanism capable of connecting the arm to the connecting portion is provided.

Even when the connecting portion is fixedly connected to the pipe-shaped handle or the head, the arm portion and the arc-shaped guiding portion can be held at the working position and the retracted position. For example, if the connecting portion is provided with a cylindrical connecting member so that the arm portion can be detachably inserted and fixed, when using the guide, the arm portion is inserted and fixed from below, and the arc-shaped guide portion is attached to the rotary blade. While not in use, the arm can be inserted from above while the arcuate guide and the arm can be held along the pipe-shaped handle when not in use.

The invention described in claim 10 of the present application is provided with a connecting mechanism for connecting the arc-shaped guide portion around the axis of the rotary blade so as to be position-adjustable.

A desired portion of the rotary blade can be guided to a wall or the like by connecting the arc-shaped guide portion around the axis of the rotary blade so as to be adjustable in position. For this reason, a mowing machine that can cope with various situations can be configured. For example, if a fixing bolt is provided at the top of the head along the axial direction of the rotary blade, and a connecting portion of the guide is provided so as to be position-adjustable around the fixing bolt, the arc-shaped guide portion is positioned at a desired portion of the rotary blade. Can be done.

According to an eleventh aspect of the present invention, there is provided a mowing machine including the mower guide according to any one of the first to fifth aspects.

[0043]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be specifically described below with reference to the drawings.

As shown in FIG. 1, a mower 1 equipped with a guide according to the present invention includes an engine 2 provided at a base end and a head 4 supporting a rotary blade 3 which are not shown in the drawings. The shaft is roughly connected by a pipe-shaped handle portion 5 with an inserted shaft.

The power transmission shaft has a base end connected to a drive shaft of the engine, and a tip end configured to rotate the rotary blade 3 via a bevel gear or the like in the head 4. .

A portable belt 6 is connected to an intermediate portion of the pipe-shaped handle 5, and the worker performs the mowing operation while holding the mower by hanging the belt 6 on his shoulder. The pipe-shaped handle 5 is connected with an operation handle 7 extending upward and left and right so as to intersect with each other. The operator grips the operation handle 7 and moves the head 4 of the mower to the left and right. Perform the mowing operation while shaking.

FIGS. 2 to 7 show a first embodiment of a mower guide according to the present invention.

As shown in FIG. 2, the guide 8 shown in these figures includes a connecting portion 9 which is connected to the pipe-shaped handle portion 5;
While extending from the connecting portion 9, the arm portion 10 which approaches the outer peripheral edge of the rotary blade 3 while being inclined in the rotation direction of the rotary blade 3, and extends from the tip of the arm portion 10, An arc-shaped guide portion 11 that protrudes radially outward from the outer peripheral edge of the rotary blade and extends in the rotational direction along the outer peripheral edge.

The connecting portion 9 is formed of a pair of plate-like members 12 and 13 which sandwich the pipe-shaped handle 5 from above and below. At the center of the plate-shaped member, the pipe-shaped handle 5
Each of the inner surfaces of the cylinder has a pressing surface in the form of a cylindrical inner surface that is brought into contact with the outer periphery of the nut.
By screwing the pair of plate-shaped members 12, 1
3 is fixed to the pipe-shaped handle 5.

The base end of the arm 10 is welded to the right side of the lower plate-like member 12 as viewed from the user. The arm 10
Is extended toward the upper surface edge of the rotary blade 3 as shown in FIGS. The arm 10 according to the present embodiment extends from the connecting portion 9 to the edge of the rotary blade 3 so as to extend in the rotation direction T of the rotary blade, as shown in FIG. In addition, as is apparent from FIG. 4, portions other than the distal end of the arm are separated from the upper surface of the rotary blade 3.
As a result, even if a cut object or foreign matter falls on the rotating blade,
It is guided radially outward along the arm and is discharged to the outside of the rotary blade 3, and is not caught between the arm 10 and the rotary blade 3.

With the arcuate guide 11 protruding from the tip of the arm 10 along the outer peripheral edge of the rotary blade 3 and slightly outside the outer peripheral edge of the rotary blade 3, the rotation of the rotary blade 3 is performed. It is extended in the direction. In the embodiment, the arc-shaped guide portion 11 is provided with about 6
It extends over a range of 0 °.

Normally, when the above-described mower is used, as shown in FIG. 8, the operating handle 7 is operated to move the head 4 and the rotary blade 3 right and left to move forward to perform the mowing operation. Do. In this case, when the head 4 is swung from the right side to the left side, mowing is often performed by the rotary blade 3. For this reason, in the present embodiment, the guide 8 is provided on the right side when viewed from the user. This is because, when the mowing machine is used as described above, even if the guide 8 according to the present invention is provided at the above-mentioned position, it does not interfere with the normal mowing operation.

As shown in FIG. 9, when the mowing operation is performed along the wall 16, the rotary blade 3 is guided so that the arc-shaped guide portion 11 is along the wall surface. Since the arc-shaped guide portion 11 protrudes from the outer peripheral edge of the rotary blade, the rotary blade does not contact the wall surface and the rotary blade 3 and the wall 16 are not damaged. Thereby, it is possible to efficiently perform the weeding operation of the weeds growing along the walls and the like.

Further, since the guide 8 according to the present embodiment is composed only of the aluminum plate member and the rod-shaped member, the weight of the brush cutter does not increase significantly.
The burden on the worker does not increase. In addition, it is possible to mount it on various mowers simply by attaching the connecting portion 9 to the pipe-shaped handle portion 5, and the versatility is high.

FIGS. 10 to 12 show a second embodiment of the mower guide according to the present invention.

The guide 18 shown in these figures is formed so that the connecting portion 19 fixed to the pipe-shaped handle portion 5, the arm portion 20 and the arc-shaped guide portion 21 are separable, and the guide 1
When not using the rotary blade 8, the rotary blade 3 is separated from the rotary blade 3 and can be stored and held in a state of being retracted from the vicinity of the rotary blade 3 along the pipe-shaped handle 5.

As shown in FIG. 10 and FIG.
9, the tubular member 22 is welded to the plate member 12 and the arm 2
No. 0 is inserted and connected to the cylindrical member 22.

A pin hole 24 through which the positioning fixing pin 23 is inserted is formed in the cylindrical member 22 and the arm portion 20 in the vertical direction.
The arm 20 and the arc-shaped guide 2
1 is configured so that it can be positioned and fixed at a predetermined work position.

On the other hand, the cylindrical member 22 is open on both sides, and is configured such that the arm portion 20 can be inserted from above as shown in FIG. As shown in FIG. 12, the arm 20 is inserted from above to
3 is inserted in the same manner as described above, the arm portion 20 and the arc-shaped guide portion 21 are fixed along the pipe-shaped handle portion 5. For this reason, in the state where the guide 18 has been retracted from the vicinity of the rotary blade 3, the guide 18 is held by the brush cutter without obstruction,
A mowing operation can be performed. Further, since the guide 18 can be stored and held by being attached to the mower, there is less possibility of the guide 18 being lost even if the guide 18 is formed to be separable.

FIGS. 13 to 15 show a third embodiment of a mower guide according to the present invention.

The guide 28 shown in these figures is
9 is fixed to the top of the head 4. In the present embodiment, a screw hole is provided at the top of the head 4 so that the bolt 3
0 is used to fix the connecting portion 31 of the guide 28.

The screw holes are formed so as to coincide with the direction of the rotation axis of the rotary blade 3. Therefore, the guide 28
Can be fixed at a desired rotation position around the axis of the rotary blade 3. That is, as shown by the imaginary line in FIG. 15, it can be easily arranged on the left side of the pipe-shaped handle 5 as well.
For this reason, the arc-shaped guide portions 33 can be positioned at various positions on the outer periphery of the rotary blade 3 by one guide 28, and it is possible to perform a mowing operation along various objects.

The guides 18 and 28 in the second embodiment and the third embodiment allow the arms 20 and 34 to be separated above the rotary blade 3 similarly to the first embodiment. And the rotating blade 3
The arm portion 20 extends so as to be close to the peripheral portion of the arm portion.
No foreign matter is caught between the rotary blade 3 and the rotary blade 3. Further, since the arc-shaped guide portions 21 and 33 also extend in the rotation direction of the rotary blade 3, there is no possibility that the cut object or the foreign matter is caught and there is no fear that the rotation of the rotary blade is hindered.

The present invention is not limited to the above embodiment. In the first and second embodiments, the connecting portions 9, 19 are formed from a pair of plate members 12, 13,
The pipe-shaped handle 5 is connected and fixed so as to sandwich the pipe-shaped handle 5, but a fixing screw or the like may be welded to the pipe-shaped handle 5, and the connecting portion of the guide according to the present invention may be connected and fixed to the screw. it can.

In the third embodiment, the connecting portion 31 is connected and fixed to the top of the head 4 by using the bolt 30. However, a screw shaft projecting upward is provided at the top of the head, and the connecting portion is connected to the screw shaft. The guide according to the present invention can also be connected so as to be fixed or sandwich the periphery of the head.

Further, in the embodiment, the guide range of the arc-shaped guide portion is set to about 60 °, but is not limited to this, and can be changed according to the mowing place or the like.

In the embodiment, the entire guide is formed of an aluminum material. However, the guide may be formed of an iron-based material such as stainless steel or a reinforced resin material. Further, the arm portion and the arc-shaped guide portion may be formed of a pipe material to reduce the weight.

Further, as shown in FIG. 16, the edge of the arm portion opposite to the rotating direction of the rotary blade has a flat surface inclined in the rotational direction with respect to the radius line of each portion of the rotary blade directly below. By forming it into a visual shape, a cut object or the like dropped on the rotary blade can be smoothly discharged.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a state in which a mower equipped with a guide according to the present invention is used.

FIG. 2 is a plan view showing a guide according to the first embodiment of the present invention.

FIG. 3 is a right side view showing the guide according to the first embodiment of the present invention.

FIG. 4 is a front view showing a guide according to the first embodiment of the present invention.

FIG. 5 is a left side view showing the guide according to the first embodiment of the present invention.

FIG. 6 is a rear view showing the guide according to the first embodiment of the present invention.

FIG. 7 is a bottom view showing the guide according to the first embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a locus of a head when a mowing operation is performed using a mowing machine.

FIG. 9 is a plan view showing a state where a mowing operation is performed along a wall using the mowing machine according to the present invention.

FIG. 10 is a front view showing a guide according to a second embodiment of the present invention.

FIG. 11 is a right side view showing a guide according to a second embodiment of the present invention.

FIG. 12 is a right side view showing a state in which a guide is housed along a pipe-shaped handle in the second embodiment of the present invention.

FIG. 13 is a plan view showing a guide according to a third embodiment of the present invention.

FIG. 14 is a front view showing a guide according to a third embodiment of the present invention.

FIG. 15 is an explanatory diagram illustrating a state where a mounting position of a guide according to a third embodiment of the present invention is changed.

FIG. 16 is a plan view showing another form of the arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Brush cutter 3 Rotating blade 4 Head 5 Pipe-shaped handle 8 Guide 9 Connecting part 10 Arm part 11 Arc-shaped guide part

Claims (11)

[Claims] 1. A pipe-shaped handle having a power source at a base end, a head rotatably supporting a rotary blade at a distal end, and a power transmission shaft inserted between the power source and the head. A guide for a mower mounted on a mower configured to rotate a rotary blade via the power transmission shaft rotated by the power source, wherein the pipe-shaped handle or A connecting portion connected to the head, an arm extending from the connecting portion, and being inclined toward a rotating direction of the rotary blade and approaching an outer peripheral edge of the rotary blade; And an arc-shaped guide portion extending in a rotating direction along a part of the outer peripheral edge in a state protruding radially outward from the outer peripheral edge of the rotary blade. 2. The mowing machine guide according to claim 1, wherein at least the arm portion and the arc-shaped guide portion are formed by bending a rod-shaped or pipe-shaped member. 3. An edge portion of the arm portion opposite to the rotating direction of the rotary blade is formed in a plan view shape inclined in the rotating direction with respect to a radius line of each portion of the rotary blade facing directly below. ,
A guide for a mower according to any one of claims 1 and 2. 4. The rotary guide according to claim 1, wherein the arc guide portion is provided in one of left and right regions of the rotary blade defined by a plane of symmetry of the rotary blade including an axis of the pipe-shaped handle portion. The mower guide according to any one of claims 1 to 3, wherein the guide is formed so as to extend along the portion. 5. The arm and the arcuate guide extend to a region of the left and right regions opposite to a user across the pipe-shaped handle, and the arcuate guide rotates. The brush cutter guide according to claim 4, wherein the guide is formed so as to extend along a range of 40 ° to 60 ° of the outer peripheral edge of the blade. 6. The brush cutter according to claim 1, wherein the connecting portion is configured to be detachably connected to the pipe-shaped handle portion or the head. guide. 7. The mower guide according to claim 1, wherein the connecting portion includes a connecting mechanism capable of detachably connecting the arm portion. 8. The connecting portion is connected to the pipe so that the arc-shaped guide portion and the arm portion can select between a working position close to an outer peripheral edge of the rotary blade and a retracted position separated from the rotary blade. The mower guide according to any one of claims 1 to 7, further comprising a connecting mechanism that can be connected to the handle or the head. 9. The arm portion is connected to the connecting portion so that the arc-shaped guide portion and the arm portion can select a working position close to an outer peripheral edge of the rotary blade and a retracted position separated from the rotary blade. The mower guide according to any one of claims 1 to 7, further comprising a connecting mechanism that can be connected to the mower. 10. A connection mechanism for connecting the arc-shaped guide portion around the axis of the rotary blade so as to be position-adjustable.
A guide for a brush cutter according to any one of claims 1 to 9. 11. A mower equipped with the mower guide according to any one of claims 1 to 10.