Debris prevention cover and brush cutter equipped with a debris prevention cover

Abstract

To provide a debris-prevention cover that can prevent stones, grass, and other debris from scattering into the surrounding area, and that can efficiently cut weeds along walls, and a brush cutter equipped with a debris-prevention cover. [Solution] The debris-preventing cover 1 is detachably attached to a brush cutter 10 which has a grass-cutting section 12 that cuts weeds by rotating, a rod section 11 with the grass-cutting section 12 at its tip, and a drive source provided on the rod section 11 that rotates the grass-cutting section 12. The debris-preventing cover 1 has a protective cover 2 that covers the top and sides of the grass-cutting section 12 and has through holes formed therein through which the rod section 11 moves, and a rod support section 3 provided on the protective cover 2, the end of which is fixed to either the rod section 11 or the grass-cutting section 12, and which is expandable and retractable.

Description

Technical Field

[0001] The present invention relates to a splash-proof cover and a mower provided with the splash-proof cover.

Background Art

[0002] Conventionally, a splash-proof cover for a lawn mower that protects a lawn mowing operator from being hit by scattered grass and stones during a weeding operation using a lawn mower has been known (Patent Document 1). The splash-proof cover includes a substrate that covers the upper surface side of the cutting blade, a cover body that is provided on the substrate, has a peripheral wall that covers the back side and the left and right side surfaces of the cutting blade, and has an open lower surface, and a notch formed on the front side of the peripheral wall. A part of the rotationally driven cutting blade is exposed outside the splash-proof cover from the notch. The splash-proof cover is fixed to the clamp by bolts and nuts through the tip of the operating lever so as not to move relative to each other. Thereby, it is possible to prevent the scattering of the objects to be cut, such as grass, and to prevent the scattering of hard objects, such as small stones, and improve safety.

[0003] In another splash-proof cover for a lawn mower, a double disk-shaped structure is formed with relatively hard plastic on the inside and synthetic rubber on the outside, and a warp is provided by bending the outermost peripheral edge of the synthetic rubber disk on the outside upward (Patent Document 2). By attaching a splash-proof cover to the tip of the lawn mower body, flying objects such as grass and stones during operation are eliminated. Since it is disk-shaped and made of synthetic rubber, even grass in a difficult-to-cut place can be cut because the synthetic rubber has a warp and the outermost edge is bent upward, allowing grass cutting in narrow gaps.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

[0005] However, in the debris prevention cover described in Patent Document 1, the cutting blade is exposed at the notch, so there was a risk that stones could hit the exposed blade and scatter, potentially damaging people or objects in the vicinity. In addition, stones and other objects could scatter into the surrounding area from the notch formed in the debris prevention cover. Furthermore, because the operating shaft of the brush cutter and the debris prevention cover are fixed so that they do not move from each other, a gap is created between the debris prevention cover and the cutting blade, making it impossible to cut the weeds in that space. In particular, when weeding along a wall, there was a possibility that the cutting blade at the notch would hit the wall and be damaged, and it was difficult to cut the weeds that were between the debris prevention cover and the cutting blade.

[0006] In the debris prevention cover for a brush cutter described in Patent Document 2, a disc-shaped protective material with its outermost edge curved upward is provided on top of the rotating nylon cord cutter. However, since the protective material only covers the top of the nylon cord cutter and the sides are exposed, grass, branches, stones, etc. cut by the nylon cord cutter can scatter into the surrounding area, potentially injuring people or property. Furthermore, because the protective material is larger than the nylon cord cutter, it was difficult to cut grass near vertically erected walls as the protective material became an obstacle.

[0007] Therefore, the present invention aims to provide a debris-prevention cover and a brush cutter equipped with the debris-prevention cover that can prevent stones, grass, and other debris from scattering into the surrounding area and also efficiently cut weeds along walls. [Means for solving the problem]

[0008] To solve the above problems, the present invention provides a scattering prevention cover for use with a brush cutter, which is detachably attached to a brush cutter having a grass cutting unit that cuts weeds by rotating, a rod unit to which the grass cutting unit is provided at the tip, and a drive source provided on the rod unit for rotating the grass cutting unit, the scattering prevention cover comprising: a protective cover that covers the upper and side portions of the grass cutting unit and has through holes formed therein through which the rod unit moves; and a rod support portion provided on the protective cover, the end of which is fixed to either the rod unit or the grass cutting unit and is expandable.

[0009] Furthermore, the side surface of the protective cover is provided with a flexible edge material that extends around its entire circumference, and it is preferable that the edge material is in a position where it can come into contact with the grass-cutting section, and that at least a portion of it is in contact with the ground.

[0010] Furthermore, it is preferable that the protective cover is circular when viewed from above, and that the rod support portion is located on the upper part of the protective cover near the through hole.

[0011] Furthermore, it is preferable that the protective cover further includes a cylindrical support portion through which the rod portion movably passes, thereby supporting the rod portion.

[0012] Furthermore, it is preferable to have an auxiliary expandable and contractible part provided outside the protective cover, with one end detachably fixed to the rod portion and the other end fixed to the protective cover.

[0013] In another aspect of the present invention, a brush cutter is provided in which any of the above-described debris-preventing covers is detachably provided. [Effects of the Invention]

[0014] With this configuration, the rod section is movable within the through-hole and the rod support section is expandable and contractible, allowing the grass-cutting section to move within the protective cover. This eliminates the gap between the grass-cutting section and the protective cover, making it possible to remove weeds located in that gap. In conventional debris-preventing covers, the debris-preventing cover and the rod were fixed in an immovable manner, making it difficult to cleanly remove weeds along walls. In contrast, with the debris-preventing cover of the present invention, the grass-cutting section is movable within the debris-preventing cover, allowing for the complete removal of weeds along walls, as shown in Figure 6. Furthermore, since the protective cover covers the top and sides of the grass-cutting section, it is possible to suppress the scattering of stones, branches, and other debris to the surrounding area.

[0015] With this configuration, the peripheral material comes into contact with the grass-cutting section as the rod support extends, thus preventing stones, branches, and other debris from scattering into the surrounding area. Furthermore, since at least a portion of the peripheral material is in contact with the ground, it can also prevent stones, branches, and other debris from scattering into the surrounding area. In addition, because the peripheral material is flexible, it can prevent deterioration caused by contact with the grass-cutting section.

[0016] With this configuration, the rod support is located near the through-hole, allowing the length of the rod support to be shortened. This enables the grass-cutting unit to move smoothly within the protective cover without interfering with the rod support. Furthermore, since the rod support is located at the top of the protective cover, damage caused by the grass-cutting unit contacting the rod support can be avoided.

[0017] With this configuration, the support section holds the rod section in place during weeding, preventing the protective cover from becoming unstable and swaying due to vibrations caused by the rotation of the mowing section. As a result, the protective cover is more stable, reducing the likelihood of gaps forming between it and the ground, and effectively preventing stones, branches, and other debris from scattering. Furthermore, since the rod section is inserted into a through-hole formed in the support section, damage to the through-hole due to the rod section's movement can be avoided.

[0018] With such a configuration, the auxiliary telescopic part supports the rod part, so that the protective cover is stabilized, and it is possible to suppress an unstable state in which the protective cover shakes due to the vibration of the grass cutting part. As a result, since the protective cover is stabilized, it is difficult for a gap to occur with the ground, and it is possible to effectively suppress stones, branches, etc. from scattering around.

[0019] According to the present invention, it is possible to provide a scattering prevention cover that can prevent stones, grass, etc. from scattering around and can efficiently cut weeds along the wall, and a brush cutter provided with the scattering prevention cover.

Brief Description of the Drawings

[0020] [Figure 1] Perspective view of a brush cutter with a scattering prevention cover according to the first embodiment of the present invention. [Figure 2] Side view of the scattering prevention cover according to the first embodiment of the present invention. [Figure 3] Perspective view for explaining the procedure of attaching the scattering prevention cover according to the first embodiment of the present invention to the brush cutter. [Figure 4] Enlarged view of the portion where the rod support portion of the scattering prevention cover according to the first embodiment of the present invention is attached to the protective cover. [Figure 5] View showing the structure of the telescopic part of the rod support portion of the scattering prevention cover according to the first embodiment of the present invention. [Figure 6] View for explaining that the head portion can move within the protective cover in the scattering prevention cover according to the first embodiment of the present invention. [Figure 7] Side view of the scattering prevention cover according to the second embodiment of the present invention. [Figure 8] Plan view of the scattering prevention cover according to the third embodiment of the present invention. [Figure 9] Side view of the scattering prevention cover according to the fourth embodiment of the present invention. [Figure 10] Perspective view showing the state in which the first rod portion is attached to the scattering prevention cover according to the fifth embodiment of the present invention. [Figure 11] A perspective view showing the first rod portion according to the sixth embodiment of the present invention attached to the splash-proof cover. [Modes for carrying out the invention]

[0021] A debris-preventing cover 1, which is detachably attached to a brush cutter 10 according to the first embodiment of the present invention, will be described with reference to Figures 1 to 6. As shown in the figures, the front, back, up, down, left, and right directions are defined.

[0022] As shown in Figure 1, the brush cutter 10 cuts the grass around the periphery with a nylon cord cutter 13 of a grass cutting unit 12 that is detachably attached to the tip of the rod unit 11. A drive source (not shown) is provided on the side of the rod unit 11 opposite to the side where the grass cutting unit 12 is located. The operator holds the gripping unit 14 located at the rear of the rod unit 11 and performs grass cutting work with the brush cutter 10.

[0023] As shown in Figure 3, a fixing part 15 is provided approximately in the center of the rod section 11. By releasing the fixing part 15, the rod section 11 can be separated into a first rod section 11A to which the grass cutting section 12 is provided, and a second rod section 11B to which the gripping section 14 is provided. The rod section 11 and the grass cutting section 12 are configured to be detachable by removing fixing bolts (not shown). The power source (not shown) may be powered by a battery or diesel fuel attached to the end of the rod section 11, or it may be a type that is carried on the back. In addition, the grass cutting section 12 may be provided with a metal cutting blade, not limited to a nylon cord cutter 13.

[0024] As shown in Figures 1 and 2, the debris-preventing cover 1 consists of a protective cover 2, a rod support section 3, and a peripheral material 4. The protective cover 2 is roughly dome-shaped and made of metal mesh so that the inside can be seen, and it covers the entire top and sides of the grass-cutting section 12. A roughly cylindrical tubular section 21 is provided at the top of the protective cover 2, and a through hole 22 into which the rod section 11 is inserted is formed at the rear of the protective cover 2.

[0025] The cylindrical portion 21 is positioned so that its center substantially coincides with that of the protective cover 2, and serves to increase the rigidity of the protective cover 2. The through hole 22 is formed to open diagonally upward and backward, and as shown in Figure 3, has a diameter sufficient to allow the first rod portion 11A to pass through and move. The periphery of the through hole 22 is provided with a crimping member (not shown) to prevent fraying of the mesh. A notch 22a is formed in the through hole 22 facing downward, and a clip 23 is provided to fix the notch 22a. By releasing the clip 23 and opening the notch 22a, the scattering prevention cover 1 can be applied to rod portions 11 and grass cutting portions 12 of various shapes. The periphery of the notch 22a is provided with a reinforcing material 22A to prevent fraying. The position in which the through hole 22 is formed can be arbitrarily set according to the angle of the rod portion 11, etc.

[0026] As shown in Figure 6, the protective cover 2 has an inner diameter such that when the grass cutting unit 12 is positioned approximately in the center of the protective cover 2 and the nylon cord cutter 13 is driven, the nylon cord cutter 13 and the peripheral material 4 are in close proximity. In other words, the inner diameter of the protective cover 2 is set to be larger than the diameter of the nylon cord cutter 13 when it is rotating. This prevents constant contact between the nylon cord cutter 13 and the peripheral material 4, reduces noise during operation, and suppresses wear on the peripheral material 4 and the nylon cord cutter 13.

[0027] The rod support section 3 is a member for fixing the rod section 11 or grass cutting section 12 and the debris prevention cover 1, and as shown in Figure 2, it is provided on the upper part of the protective cover 2 and near the through hole 22. The rod support section 3 consists of a cover fixing section 31, an extendable section 32, and a rod fixing section 33. As shown in Figure 4, the cover fixing section 31 is a member for fixing the extendable section 32 to the protective cover 2, and consists of a pair of mounting collars 34, a bolt 35, and a nut 36. The mounting collars 34 are provided so as to sandwich the protective cover 2 from above and below, and the bolt 35 and nut 36 are inserted through them.

[0028] As shown in Figure 5, the telescopic section 32 is a roughly flat rubber tube with an opening 32a at one end. A crimped portion 37 is provided around the periphery of the opening 32a to prevent cracking. The thickness of the telescopic section 32 should preferably be set so that it can expand and contract to the extent that the grass-cutting section 12 can move within the protective cover 2. The other end of the telescopic section 32 is fixed to the rod fixing portion 33.

[0029] As shown in Figure 6, the telescopic section 32 is set to a length that extends sufficiently when the grass-cutting section 12 moves within the protective cover 2 to the vicinity of the peripheral material 4. In other words, when the protective cover 2 is in contact with the wall 100 and cannot move forward, the length is set such that when the operator pushes the grass-cutting section 12 against the wall 100 by further advancing the gripping section 14, the grass-cutting section 12 is brought close to or in contact with the peripheral material 4 and cannot move any further forward. At the cover fixing section 31, the telescopic section 32 is fixed to the protective cover 2 by a bolt 35 passing through an opening 32a surrounded by a crimping section 37 and being fixed to the mounting collar 34 with a nut 36.

[0030] The grass cutting unit 12 is movable within the protective cover 2 from the position indicated by the solid line in Figure 6 to the position indicated by the dotted line. In other words, the grass cutting unit 12 moves within the protective cover 2 so that the nylon cord cutter 13 can completely cut the weeds on the ground G inside the protective cover 2. This makes it possible to cut weeds even in the vicinity of the wall 100 and in the gap S indicated by the dashed line in the figure. At this time, since the peripheral material 4 is located between the wall 100 and the nylon cord cutter 13, it is possible to prevent the wall 100 from being damaged by the nylon cord cutter 13.

[0031] The rod fixing part 33 has an insertion hole 33a, through which the rod part 11 or the grass cutting part 12 is passed and fixed to the rod part 11 or grass cutting part 12 with a fixing bolt 33A.

[0032] The peripheral material 4 is provided at the bottom of the protective cover 2 and is made of rubber with a predetermined thickness. When unfolded, the peripheral material 4 becomes a substantially flat plate shape and is provided around the entire circumference of the protective cover 2. The peripheral material 4 is fixed to the protective cover 2 by a plurality of bolts 41. As shown in Figure 2, the lower end of the peripheral material 4 is in contact with or close to the ground G around its entire circumference. In other words, the grass cutting unit 12 and the nylon cord cutter 13 are covered in all directions—front, back, up, down, left, and right—by the protective cover 2 and the peripheral material 4.

[0033] Next, with reference to Figure 3, the method for attaching the debris prevention cover 1 to the brush cutter 10 will be explained.

[0034] As shown in Figure 3(a), the fixing part 15 of the brush cutter 10 is released, and the rod part 11 is separated into the first rod part 11A and the second rod part 11B. At the same time, the bolts (not shown) that fix the rod part 11 and the grass cutting part 12 are removed and the two are separated. As shown in Figure 3(b), the grass cutting part 12 is placed inside the protective cover 2. At this time, the grass cutting part 12 may be completely covered by the protective cover 2, or a part of the grass cutting part 12 may be exposed to the outside through the through hole 22.

[0035] As shown in Figure 3(c), the rod portion 11 is inserted into the insertion hole 33a with the protective cover 2 covering the grass cutting portion 12. At this time, the rod portion 11 can be easily inserted into the through hole 22 by removing the clip 23 and opening the notch 22a. The rod portion 11 and the grass cutting portion 12 are fixed to each other, and the rod fixing portion 33 is fixed to the rod portion 11 or the grass cutting portion 12 with the fixing bolt 33A. The attachment of the scattering prevention cover 1 to the brush cutter 10 is completed by fixing the first rod portion 11A and the second rod portion 11B with the connecting fixing portion 15.

[0036] With this configuration, the rod portion 11 is movable within the through hole 22 and the rod support portion 3 is expandable and contractible, allowing the grass cutting portion 12 to move within the protective cover 2. As a result, the gap S between the grass cutting portion 12 and the protective cover 2 is eliminated, making it possible to remove weeds located in the gap S. In conventional debris prevention covers, the debris prevention cover and the rod were fixed in an immovable manner, making it difficult to cleanly remove weeds near walls. In contrast, with the debris prevention cover 1 of the present invention, the grass cutting portion 12 is movable within the debris prevention cover 1, so as shown in Figure 6, weeds near the wall 100 can be removed without leaving any behind. In addition, since the protective cover 2 covers the top and sides of the grass cutting portion 12, it is possible to suppress the scattering of stones, branches, etc. to the surrounding area.

[0037] With this configuration, the peripheral material 4 comes into contact with the grass-cutting section 12 as the telescopic section 32 of the rod support section 3 extends, thus preventing stones, branches, and other debris from scattering into the surrounding area. Furthermore, since at least a portion of the peripheral material 4 is in contact with the ground G, the peripheral material 4 can prevent stones, branches, and other debris from scattering into the surrounding area. In addition, because the peripheral material 4 is flexible, it can prevent deterioration caused by contact with the grass-cutting section 12.

[0038] With this configuration, since the rod support section 3 is located near the through hole 22, the length of the telescopic section 32 of the rod support section 3 can be set to be shorter. This allows the grass cutting section 12 to move smoothly within the protective cover 2 without interfering with the telescopic section 32. In addition, since the rod support section 3 is located on the upper part of the protective cover 2, damage caused by the grass cutting section 12 coming into contact with the telescopic section 32 can be avoided.

[0039] Next, a second embodiment of the present invention will be described with reference to Figure 7. Components identical to those in the first embodiment are denoted by the same reference numerals and their descriptions are omitted.

[0040] The scattering prevention cover 101 according to the second embodiment consists of a protective cover 2 and a rod support part 3. Unlike the scattering prevention cover 1 according to the first embodiment, the scattering prevention cover 101 does not have a peripheral material 4. In other words, the bottom of the protective cover 2 is in contact with or close to the ground G. This prevents stones and other objects from being scattered by the rotation of the nylon cord cutter 13 and reduces the manufacturing cost of the scattering prevention cover 1.

[0041] Next, a third embodiment of the present invention will be described with reference to Figure 8. Components identical to those in the above-described embodiments are denoted by the same reference numerals and their descriptions are omitted.

[0042] In the third embodiment, the splash-proof cover 301 has four rod support parts 303 provided on the upper surface of the protective cover 302. A rod fixing part (not shown) is provided at the end of each telescopic part 332. Furthermore, the through hole 322 does not have a notch 22a or a clip 23.

[0043] With this configuration, the rod fixing part is supported by multiple rod support parts 303, allowing the grass cutting part 12 to move stably within the protective cover 2. Furthermore, the rod fixing part is supported by four telescopic parts 332, which suppresses wear on the telescopic parts 332 and extends the lifespan of the debris prevention cover 301. In addition, since the notches 22a and clips 23 are omitted in the through holes 322, the manufacturing cost of the debris prevention cover 301 can be reduced.

[0044] Next, a fourth embodiment of the present invention will be described with reference to Figure 9. Components identical to those in the above-described embodiments are denoted by the same reference numerals and their descriptions are omitted.

[0045] In the fourth embodiment, the scattering prevention cover 401 is provided with a cylindrical support portion 422 on the protective cover 2. The support portion 422 protrudes diagonally upward and backward from the protective cover 2 and has a support hole 422a that is larger than the rod portion 11. When attaching the rod portion 11 to the protective cover 2, with the grass cutting portion 12 positioned inside the protective cover 2, the first rod portion 11A is inserted into the support portion 422 to fix the grass cutting portion 12 and the first rod portion 11A together.

[0046] With this configuration, the support section 422 supports the rod section 11 while weeding is performed, which prevents the protective cover 2 from becoming unstable and swaying due to vibrations caused by the rotation of the grass-cutting section 12. As a result, the protective cover 2 is stabilized, making it less likely for gaps to form between the peripheral material 4 and the ground G, and effectively preventing stones, branches, etc. from scattering into the surrounding area. Furthermore, since the rod section 11 is inserted into the support hole 422a formed in the support section 422, damage to the through hole 22 due to the rod section 11 swaying can be avoided.

[0047] Next, a fifth embodiment of the present invention will be described with reference to Figure 10. Components identical to those in the above-described embodiments are denoted by the same reference numerals and their descriptions are omitted.

[0048] In the fifth embodiment of the scattering prevention cover 501, an auxiliary telescopic part 512 is provided, one end of which is fixed to a first mounting part 511 which is fixed to the first rod part 11A, and the other end of which is fixed to a second mounting part 513 which is fixed to the protective cover 2. At least one of the first mounting part 511 and the second mounting part 513 is provided to which the auxiliary telescopic part 512 can be detachably attached. When attaching the protective cover 2 to the brush cutter 10, the grass cutting part 12 is placed inside the protective cover 2 and the grass cutting part 12 is fixed to the first mounting part 511 and the second mounting part 513, and then the auxiliary telescopic part 512 is fixed to the first mounting part 511 and the second mounting part 513.

[0049] With this configuration, the auxiliary telescopic section 512 supports the rod section 11, stabilizing the protective cover 2 and preventing it from becoming unstable and shaking due to vibrations from the grass-cutting section 12. As a result, the protective cover 2 is stabilized, making it less likely for gaps to form between the peripheral material 4 and the ground G, and effectively suppressing the scattering of stones, branches, and other debris into the surrounding area.

[0050] Next, a sixth embodiment of the present invention will be described with reference to Figure 11. Components identical to those in the above-described embodiments are denoted by the same reference numerals and their descriptions are omitted.

[0051] In the sixth embodiment of the scattering prevention cover 601, two second auxiliary telescopic parts 612 are provided, one end of which is fixed to the first mounting part 511 and the other end of which is fixed to the third mounting part 613 provided on the cylindrical part 21. At least one of the first mounting part 511 and the third mounting part 613 is provided with a second auxiliary telescopic part 612 that can be detachably attached. When attaching the protective cover 2 to the brush cutter 10, the grass cutting part 12 is placed inside the protective cover 2 and the grass cutting part 12 is fixed to the first mounting part 511 and the second mounting part 513, and the two second auxiliary telescopic parts 612 are fixed to the first mounting part 511 and the third mounting part 613.

[0052] With this configuration, the auxiliary telescopic section 512 and the second auxiliary telescopic section 612 support the rod section 11, making the protective cover 2 more stable and preventing the protective cover 2 from becoming unstable and swaying due to vibrations from the grass-cutting section 12. As a result, the protective cover 2 is more stable, making it less likely for gaps to form between the peripheral material 4 and the ground G, and further effectively suppressing the scattering of stones, branches, etc. into the surrounding area.

[0053] The debris-preventing cover and the brush cutter equipped with the debris-preventing cover according to the present invention are not limited to the embodiments described above, and various modifications are possible within the scope of the gist of the invention as described in the claims.

[0054] In the above-described embodiment, the protective cover 2 had a roughly dome-shaped circular cross-section, but it is not limited to this. Any protective cover 2 that completely covers the grass-cutting unit 12 is acceptable, and its cross-sectional shape may be rectangular or polygonal. Furthermore, although the protective cover 2 was made of a metal mesh material, it is not limited to this and may be made of a transparent resin or perforated metal that allows the interior to be seen.

[0055] In the above-described embodiment, a cylindrical rubber tube was used as the expandable portion 32, but the invention is not limited thereto. The expandable portion 32 may be made of rubber in a substantially flat shape, as long as it has enough expandability to allow the grass-cutting portion 12 to move within the protective cover 2, and may be made of natural rubber, butyl rubber, chloroprene rubber, urethane rubber, silicone rubber, nitrile rubber, ethylene propylene rubber, fluororubber, etc.

[0056] In the above-described embodiment, the rod fixing part 33 is fixed to the rod part 11, but the invention is not limited thereto. One end of the telescopic part 32 may be fixed to the protective cover 2 by the cover fixing part 31, and the other end may be fixed to any location on the grass cutting part 12.

[0057] In the above-described embodiment, the peripheral material 4 was made of rubber, but it is not limited to this. For example, any material such as resin or metal such as aluminum can be used. [Explanation of Symbols]

[0058] 1, 101, 201, 301 Shatterproof cover 2, 202, 302 Protective Cover 3,303 Rod support section 4 Peripheral material 10 Brush cutters 11 Rod section 13 Nylon Cord Cutter 22, 222, 322 through holes 32, 332 Telescopic part

Claims

1. A scattering prevention cover that can be detachably attached to a brush cutter having a grass cutting unit that cuts weeds by rotating, a rod unit to which the grass cutting unit is provided at the tip, and a drive source provided on the rod unit that rotates the grass cutting unit, A protective cover covering the upper and side portions of the grass cutting section, with through holes formed therein through which the rod portion can movely pass; A debris-preventing cover for a brush cutter, characterized in that it has a rod support portion provided on the protective cover, the end of which is fixed to either the rod portion or the grass-cutting portion, and the rod support portion is expandable.

2. The side surface of the protective cover is provided with a flexible edge material that extends around its entire circumference. The scattering prevention cover for a brush cutter according to claim 1, characterized in that the peripheral material comes into contact with the grass cutting section as the rod support section extends, and at least a portion of it comes into contact with the ground.

3. The aforementioned protective cover is circular when viewed from above, The debris prevention cover for a brush cutter according to claim 2, characterized in that the rod support portion is provided on the upper part of the protective cover and near the through hole.

4. The splash-proof cover according to claim 1, further comprising a cylindrical support portion that supports the rod portion by allowing the rod portion to move through it.

5. The splash-proof cover according to claim 1, characterized in that it has an expandable auxiliary expandable part provided outside the protective cover, one end of which is detachably fixed to the rod portion and the other end of which is fixed to the protective cover.

6. A brush cutter equipped with a detachable debris-preventing cover according to any one of claims 1 to 5.

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