JP3144741U - Protective cover for brush cutter and brush cutter provided with the same - Google Patents

Abstract

Cut grass or sand that is bounced off by a cutting blade during a brush cutting operation and flies through a path on the upper side of the handle shaft away from the ground with respect to the central axis of the handle shaft Provided is a protective cover for a brush cutter that can protect a worker from flying objects such as, and can perform a clean brushing operation while looking at a brush cutting blade.
A brush cutter blade 12 that is rotationally driven at the tip end of a handle shaft 13 is attached to a brush cutter 11 that is rotatably provided and used, such as sand and pebbles that are splashed by the brush cutter blade 12. In a protective cover 14 for a brush cutter for protecting an operator from flying objects, an upper side having a net-like portion 20 that is disposed at an upper position on the side farther from the ground than the central axis with respect to the central axis of the handle shaft 13. A configuration comprising a cover 18.
[Selection] Figure 1

Description

  The present invention is used by attaching a brush cutter that is driven to rotate at the tip of a handle shaft to a brush cutter that is rotatably provided to protect an operator from flying objects that are splashed by the cutter blade. The present invention relates to a protective cover for a brush cutter and a brush cutter having the same.

  An example of a conventional brush cutter cover is shown in FIG. 9 (see, for example, Patent Document 1). As shown in the figure, the brush cutter 2 to which the brush cutter cover 1 is attached is provided with a brush cutter blade 4 that is rotatably driven at the tip of the handle shaft 3. The brush cutting blade 4 is rotationally driven by an engine 5 attached to the proximal end portion of the handle shaft 3. Examples of the brush cutting blade 4 include a metal disc-shaped body having a large number of cutting blades formed at the peripheral edge thereof and a synthetic resin flexible wire blade.

  Further, as shown in FIG. 9, the brush cutter cover 1 attached to the distal end portion of the handle shaft 3 includes a cover body 1a fixedly attached to the handle shaft 3, and the bottom of the cover body 1a. A dustproof cover 1b is attached to the edge. The cover body 1a is made of a hard material, and the dustproof cover 1b is made of a flexible material.

When mowing the grass using this conventional brush cutter 2, as shown in FIG. 9, the dust cover 1b hangs down from the cover body 1a and its lower edge is in contact with the ground. It is possible to protect the cut grass, sand, pebbles, etc. that are splashed off by the rotation of the blade 4 from flying toward the operator. As a result, the safety of the worker can be improved, and grass cutting work can be performed efficiently.
Japanese Patent Laid-Open No. 06-33419

  However, in the conventional brush cutter cover 1 shown in FIG. 9, work is performed from sand, pebbles, etc. that are splashed by the brush cutter blade 4 that rotates at a high speed and fly toward the operator side near the ground. Although it is possible to protect the worker, it is not possible to protect the worker from sand, pebbles, etc. that are jumped away in the direction away from the ground and get over the brush cutter cover 1 and fly to the worker side. .

  That is, the conventional brush cutter cover 1 shown in FIG. 9 is disposed at a lower position on the side closer to the ground than the central axis with respect to the central axis of the handle shaft 3. It is possible to protect the worker from sand, pebbles, etc. that fly near to the worker side.

  However, for example, when a flexible linear blade made of synthetic resin is used as the brush cutting blade 4, the flexible linear blade rotating at high speed is struck against the ground, and sand, pebbles and the like are removed from the brush by the impact. Sometimes over the top cover 1 and fly to the operator side.

  In order to prevent this, it is conceivable that the upper cover is attached to an upper position on the side farther from the ground than the central axis with respect to the central axis of the handle shaft 3. When attached, when the operator sees the brush blade 4 and the grass to be cut with his eyes, the upper cover becomes an obstacle, so the work efficiency of the brush cutting operation is lowered.

  The present invention has been made in order to solve the above-described problems, and is struck by a brush cutting blade during a brush cutting operation, and the center axis of the handle shaft is referred to as a center axis. A protective cover for a brush cutter that can protect a worker from flying objects flying through an upper path on the side away from the ground and can perform a brushing operation while viewing the brush blade visually, and a brush cutter having the same The purpose is to provide.

  The protective cover for a brush cutter according to the present invention is used by being attached to a brush cutter that is rotatably provided with a cutter blade that is rotationally driven at the tip of a handle shaft, and the flying cover that is splashed off by the cutter blade. A protective cover for a brush cutter for protecting an operator from an object, wherein the upper cover has translucency and is disposed at an upper position on the side farther from the ground than the central axis with respect to the central axis of the handle shaft. It is characterized by providing.

  According to the brush cutter to which the protective cover for a brush cutter according to the present invention is attached, the brush cutter blade can be rotated at a high speed, and grass, lawn or the like can be cut off by the brush cutter blade rotating at a high speed. Further, the protective cover for the brush cutter is disposed at the upper position on the side farther from the ground than the central axis with respect to the central axis of the handle shaft, so that it is splashed off by the brush cutter during the brushing operation. Thus, the operator can be protected from flying objects such as sand and pebbles that fly through the upper path on the side farther from the ground than the central axis with respect to the central axis of the handle shaft. Moreover, since the upper cover has translucency, it is possible to see through the cutting blade and the grass or lawn to be cut through this upper cover. Can do.

  In the protective cover for a brush cutter according to the present invention, the upper cover may have a net-like portion for protecting an operator from the flying object or a plate-like portion in which a large number of small holes are formed. .

  Thus, if the upper cover has a net-like part or a plate-like part in which a large number of small holes are formed, the protective cover for the brush cutter can be reduced in weight, and the labor of the brushing work can be reduced. Can do. Then, through this net-like portion or plate-like portion, it is possible to see through the cutting blade and the grass or turf to be cut, so that the cutting operation can be performed cleanly while viewing them. Further, since the surface of the net-like part or plate-like part has an uneven shape, even if cut grass or the like (cut grass) adheres, the net-like part or plate can be removed relatively easily. The brush cutting operation can be performed again while visually checking the brush cutting blade or the like through the shaped portion.

  In the bush cover protective cover according to the present invention, the protective cover includes an attachment / detachment mechanism for detachably attaching the upper cover to the handle shaft, and the attachment / detachment mechanism includes a reinforcing portion for reinforcing the upper cover, An attachment portion attached to the handle shaft, an engagement hole provided in one of the reinforcement portion and the attachment portion, and an engagement hole provided in the other of the reinforcement portion and the attachment portion. It can have an engaging projection that is removably engaged.

  According to this attachment / detachment mechanism, the translucent upper cover can be attached to and detached from the attachment portion attached to the handle shaft relatively easily and detachably. Specifically, when the upper cover is attached to the attachment portion, the engagement hole (or engagement protrusion) formed in the reinforcement portion of the upper cover is replaced by the engagement protrusion (or engagement protrusion) formed in the attachment portion of the handle shaft. Engage with the joint hole. And when removing an upper cover from an attaching part, what is necessary is just to remove an engagement hole from an engagement protrusion.

  The protective cover for a brush cutter according to the present invention may include a lower cover disposed at a lower position closer to the ground than the central axis with respect to the central axis of the handle shaft. .

  In this way, when the lower cover is provided, the operator is protected from sand, pebbles, etc. that are jumped off by the brush blade that rotates at high speed and fly toward the worker side near the ground. Can do.

  In the protective cover for a brush cutter according to the present invention, the lower cover is a translucent and has a net-like part for protecting an operator from the flying object, or a plate-like part in which many small holes are formed. It can have.

  As described above, when the lower cover has a net-like portion or a plate-like portion having a large number of small holes, the upper cover has a net-like portion or a plate-like shape having a large number of small holes as described above. Since it acts in the same way as when it has a portion, its description is omitted.

  In the protective cover for a brush cutter according to the present invention, the upper cover and the lower cover having flexibility to be connected to each other, an insertion hole for inserting the handle shaft, and the upper cover and the lower cover It is formed in any one or both of them, and may be provided with a notch for guiding the handle shaft from the outside of the upper cover and the lower cover to the insertion hole.

  In this way, when attaching the handle shaft to the insertion hole formed in the protective cover for the brush cutter, the side surface of the handle shaft is inserted into the notch from the outside of the upper cover and the lower cover to enter the inside of the insertion hole. Can be done by placing it on This makes it easy to attach the protective cover for the brush cutter to the handle shaft without removing them from the handle shaft even when the cutting blade is attached to the tip of the handle shaft and the engine is attached to the base end. Can be attached to.

  The brush cutter according to the present invention includes the protective cover for the brush cutter according to the present invention.

  According to the brush cutter according to the present invention, the brush blade can be rotated at a high speed, and grass, turf, or the like can be cut by the brush blade rotating at a high speed. And since the protective cover for brush cutters acts in the same manner as described above, the description thereof is omitted.

  In the brush cutter according to this device, the brush cutter may be a flexible wire blade or a tip saw.

  In this way, when the brush cutter is a flexible wire blade or a tip saw, sand, pebbles, etc. are spattered by the cutter blade rotating at high speed and fly to the operator side during the brush cutting operation. In some cases, the protective cover for the brush cutter can protect the operator from these flying objects.

  According to the protective cover for a brush cutter and the brush cutter according to the present invention, the side that is bounced off by the brush cutter blade during the brush cutting operation and is farther from the ground than the center axis of the handle shaft. It is possible to protect the worker from flying objects such as sand and pebbles flying through the upper path. As a result, the safety of the brushing work can be improved.

  The upper cover of the protective cover for the brush cutter has translucency, so that the cutter blade and the grass or grass to be cut can be seen through the upper cover. The brushing work can be done cleanly with your eyes.

  Hereinafter, an embodiment of a protective cover for a brush cutter according to the present invention and a brush cutter including the same will be described with reference to FIGS. FIG. 1 is a plan view showing a bush cover protective cover attached to the tip of the brush cutter 11, and FIG. 2 is a partial sectional front view showing the brush cutter protective cover shown in FIG. The brush cutter 11 shown in FIGS. 1 and 2 can be carried by an operator who performs mowing work, and the brush cutter 12 can be rotated at a high speed in a predetermined direction by, for example, an engine (rotation drive unit) not shown. It is possible to cut grass, turf and the like with the brush blade 12 which rotates at high speed. A brush cutter protective cover 14 is attached to the tip of the handle shaft 13 included in the brush cutter 11.

  This brush cutter protective cover 14 is used when the operator rotates the brush blade 12 at a high speed and works to cut grass, turf, etc. with the brush cutter 12 rotating at high speed. It is possible to protect the worker from flying objects such as sand and pebbles that are bounced off by the air and fly to the worker side.

  As shown in FIGS. 1 and 2, the brush blade 12 is a flexible linear blade made of synthetic resin. This flexible linear blade is, for example, a cord blade made of nylon. The flexible linear blade is wound around a bobbin accommodated in the cutting blade rotating body 15, and both ends of the flexible linear blade have a predetermined length at the blade of the cutting blade rotating body 15. It is drawn out through the through holes 15a and 15a.

  The cutting blade rotating body 15 is a disk-shaped body and is attached to a rotating shaft (not shown) disposed at the tip of the handle shaft 13. The rotating shaft is rotationally driven at a high speed by an engine attached to the proximal end portion of the handle shaft 13.

  When the brush cutter 11 is used for brush cutting, the rotating blade 15 is rotated at a high speed by the engine so that the flexible linear blade extends radially from the blade rotating body 15 by centrifugal force. Rotate at high speed to cut the grass with a scissors.

  As shown in FIGS. 1 to 4, the brush cutter protective cover 14 includes a cover body 16 and an attachment / detachment mechanism 17 for detachably attaching the cover body 16 to the handle shaft 13.

  As shown in FIG. 4, the cover body 16 has an upper cover 18 and a lower cover 19 that are coupled to each other, and each has a sheet-like net-like portion 20 that can be bent. The net-like portion 20 is made of metal, for example, but may be made of other materials or may be made of synthetic resin. The size of the mesh of the mesh portion 20 is such that cutting grass that is cut and scattered by the brush blade 12 that rotates at high speed, and flying objects such as sand that is bounced off do not fly to the operator side. Is the size that can be. And since this net-like part 20 has many mesh eyes, it has translucency and is formed so that the other side can be seen through.

  As shown in FIG. 4A, the upper cover 18 is formed in a horizontally long half-moon shape, and the lower cover 19 is formed in a horizontally long rectangular shape. The upper and lower covers 18 and 19 are formed with insertion holes 21 through which the handle shaft 13 is inserted at substantially the center thereof.

  In addition, as shown in FIG. 2, the upper cover 18 is located on the side farther from the ground than the central axis with respect to the central axis of the handle shaft 13 with the cover body 16 attached to the handle shaft 13. It is formed so that it may be arranged. Accordingly, it is possible to protect the worker from sand, pebbles and the like flying to the worker side through the path 22 above the center axis of the handle shaft 13.

  As shown in FIG. 2, the lower cover 19 is formed so as to be disposed at a lower position closer to the ground than the central axis with respect to the central axis of the handle shaft 13. Accordingly, it is possible to protect the worker from sand, pebbles and the like flying to the worker side through the path 23 closer to the ground below the center axis of the handle shaft 13.

  Further, as shown in FIG. 4, the upper and lower covers 18 and 19 are formed with a plurality of linear reinforcing portions 24 to 28. These reinforcing portions 24 to 28 are long and flexible plate-like bodies made of synthetic resin, and include a contour reinforcing portion 24 formed along the outer peripheral edges of the upper and lower covers 18 and 19. And the horizontal reinforcement part 25 formed in the horizontal direction which passes along the insertion hole 21, and the hole reinforcement part 26 formed in the inner peripheral part of the insertion hole 21 are provided. Further, the upper cover 18 is formed on two upper reinforcing portions 27 and 27 and the lower cover 19 which are formed so as to extend obliquely upward and leftward and rightward from the circular reinforcing portion, and is suspended from the circular reinforcing portion. The lower reinforcement part 28 formed so that it may extend in the direction is provided.

  Further, as shown in FIG. 4, the lower reinforcing portion 28 is formed with a cut portion 29 in a straight line. The cut portion 29 is for guiding the handle shaft 13 from the outside of the cover body 16 to the insertion hole 21, and is formed over a range from the lower edge of the lower reinforcing portion 28 to the inside of the insertion hole 21. Has been. That is, the lower reinforcing portion 28 formed in the lower cover 19 is cut in a range where the cut portion 29 is formed.

  As shown in FIG. 4, the cover body 16 is formed such that the left portion of the insertion hole 21 is longer in the left direction than the right portion, and the elongated portion is provided as an extension portion 30. ing. As described above, the extension portion 30 is provided on the left side portion of the cover body 16 as shown in FIG. 1, such as cut grass that is cut and scattered by the brush blade 12 that rotates counterclockwise, and this high speed. This is because a lot of sand, pebbles, and the like that are bounced off by the rotating cutting blade 12 fly toward the extended portion 30.

  As shown in the enlarged partial sectional front view shown in FIG. 3, the attachment / detachment mechanism 17 is for attaching the cover body 16 to the handle shaft 13 detachably, and includes a plurality of engagement protrusions 31,. And a plurality of engagement holes 32 that are detachably engaged with the engagement protrusions 31.

  The plurality of engaging protrusions 31 are provided so as to protrude from the attachment surfaces 35 and 35 formed on the upper attachment portion 33 and the lower attachment portion 34 shown in FIG. Each of the upper mounting portion 33 and the lower mounting portion 34 has grip portions 33a and 33a each formed in a half shape, and the handle shaft 13 is sandwiched between the pair of grip portions 33a and 33a. By arranging and tightening the two bolts 36, 36, the upper and lower attachment portions 33, 34 can be fixedly attached to the handle shaft 13.

  The upper mounting portion 33 is formed as shown in FIGS. 5 (a) to 5 (d) and FIGS. 6 (a) to 6 (c). FIGS. 5A to 5D are a front view, a plan view, a BB cross-sectional view, and a rear view of the upper mounting portion 33 as viewed from the mounting surface 35 side. 6A to 6C are a DC cross-sectional view, a CC cross-sectional view, and a side view of the upper mounting portion 33, respectively.

  As shown in FIG. 5 (b), the upper mounting portion 33 is formed with a grip portion 33a at a substantially central portion, and support portions 37, 37 extend in the left and right horizontal directions from the left and right side surfaces of the grip portion 33a. It is formed as follows. A mounting surface 35 of the cover body 16 is formed as a flat surface on the front surfaces of the gripping portion 33 a and the support portions 37, 37, and a plurality of engaging projections 31 project from the mounting surface 35. A pair of bolt holes 38 are formed on the back side of the grip portion 33a. The pair of support portions 37, 37 extending in the left and right directions from the gripping portion 33 a is formed such that the left support portion 37 is longer than the right support portion 37 and corresponds to the shape of the cover body 16.

  The lower mounting portion 34 is formed as shown in FIGS. 7A to 7F are a front view, a plan view, a rear view, a side view, an EF sectional view, and an EE sectional view of the lower mounting portion 34 as viewed from the mounting surface 35 side. .

  The difference between the lower mounting portion 34 shown in FIGS. 7A to 7F and the upper mounting portion 33 shown in FIGS. 5A to 5D is as follows. As shown in FIG. 5, a pair of support portions 37, 37 extending in the left and right horizontal directions are formed, whereas the lower mounting portion 34 has such a pair as shown in FIG. 7. The support portions 37, 37 are not formed. In short, the lower mounting portion 34 includes a gripping portion 33 a, and this gripping portion 33 a is equivalent to the gripping portion 33 a of the upper mounting portion 33. In addition, the equivalent part of this holding part 33a is shown with the same drawing code | symbol, and those description is abbreviate | omitted.

  Next, a plurality of engagement holes 32 that are detachably engaged with the plurality of engagement protrusions 31 will be described. These engagement holes 32 are provided in the horizontal reinforcing portion 25 and the hole reinforcing portion 26 formed in the cover body 16 as shown in FIG. The diameter of each of the engagement holes 32 is formed to be slightly smaller than the outer diameter of the engagement protrusion 31.

  Further, as shown in FIG. 3, each engaging protrusion 31 is composed of two small protrusions formed with a gap therebetween, and these two small protrusions are configured to be elastically deformable and expandable. Yes. In other words, when each engagement protrusion 31 is inserted into or removed from each engagement hole 32, each of the engagement protrusions 31 is elastically deformed to reduce its diameter, and in a state where each engagement protrusion 31 is engaged with each engagement hole 32, The diameter is expanded by elastic deformation to return to the original shape.

  According to the attachment / detachment mechanism 17 configured as described above, as shown in FIG. 3, the upper and lower attachment portions on which the cover body 16 having translucency (the other side can be seen through) is attached to the handle shaft 13. It can be attached to and detached from 33 and 34 relatively easily and detachably.

  Specifically, when the cover body 16 is attached to the upper and lower attachment portions 33, 34, the plurality of engagement holes 32 formed in the reinforcement portions 25, 26 of the cover body 16 are provided in the handle shaft 13. The upper and lower attachment portions 33 and 34 are attached to the engagement protrusions 31 formed on the attachment surfaces 35. Thereby, the cover main body 16 can be attached in a state of being in close contact with the attachment surfaces 35 of the upper and lower attachment portions 33 and 34.

  And when removing the cover main body 16 from the upper side and lower side attaching parts 33 and 34, what is necessary is just to pull away each engagement hole 32 from each corresponding engagement protrusion 31, and to remove. Thus, the cover body 16 can be conveniently attached to and detached from the handle shaft 13 without a tool, which is convenient.

  Further, as shown in FIG. 2, the lower cover 19 is a surface perpendicular to the handle shaft 13 in a state where the cover body 16 is attached to the handle shaft 13 via the upper and lower attachment portions 33 and 34. The upper cover 18 is formed so as to be inclined forward by an angle θ (about 15 °) with respect to the lower cover 19. As a result, flying objects that are splashed by the brush blade 12 that rotates at high speed and fly to the operator side can be reliably protected by the cover body 16.

  Next, the operation of the brush cutter 11 to which the brush cutter protective cover 14 is attached will be described. According to this brush cutter 11, as shown in FIGS. 1 and 2, the brush cutter 12 is rotated at a high speed, and the brush cutter 12, which is a flexible linear blade rotating at high speed, is used to remove grass, turf, and the like. Can be reaped. The upper cover 18 provided in the brush cutter protective cover 14 is disposed at an upper position on the side farther from the ground than the central axis with respect to the central axis of the handle shaft 13. Flying objects such as cut grass, sand, and pebbles that are bounced off by the brush cutter blade 12 and fly through the upper path 22 on the side farther from the ground than the center axis with respect to the center axis of the handle shaft 13 The operator can be protected from As a result, the safety of the brushing work can be improved.

  In particular, when using a flexible linear blade made of synthetic resin as the brush cutting blade 12, the flexible linear blade rotating at high speed is struck against the ground, and the impact causes sand, pebbles, etc. Although it may fly to the worker side through the upper path 22 on the side farther from the ground than the center axis, the flying object flying through such a path 22 can be reliably protected. .

  Further, as shown in FIGS. 1 and 2, the lower cover 19 provided in the bush cover protective cover 14 is bounced off by the brush cutter 12 that rotates at high speed, and passes near the ground toward the operator. Workers can be protected from cutting grass, sand, pebbles, etc.

  Further, the cover main body 16 is formed of a net-like portion 20, and the net-like portion 20 has translucency so that the other side can be seen through. Therefore, the cutting blade 12 and the mowing blade are cut through the cover main body 16. You can see through the grass and turf that you are trying to see, and you can clean them with your eyes.

  As shown in FIG. 1, since the cover main body 16 is formed by the mesh portion 20, the brush cutter protective cover 14 can be reduced in weight, and the labor of the brush cutting work can be reduced. Further, since the mesh portion 20 has an uneven surface, even if cut grass (cut grass) or the like adheres, it can be removed relatively easily. The mowing work can be done again while looking at 12 mag.

  Further, as shown in FIG. 4A, the cover body 16 is formed with a cut portion 29. According to the notch 29, when attaching the handle shaft 13 to the insertion hole 21 of the cover main body 16 in order to attach the cover main body 16 to the handle shaft 13, the side surface of the handle shaft 13 is moved from the outside of the cover main body 16. This can be done by entering the notch 29 and placing it in the insertion hole 21. And when removing the cover main body 16 from the handle shaft 13, what is necessary is just to perform said reverse.

  Thereby, for example, even when the brush cutter 12 is attached to the distal end portion of the handle shaft 13 and the engine is attached to the proximal end portion, the cover body 16 is attached to the handle shaft 13 without removing them from the handle shaft. It is convenient because it can be easily attached and removed.

  However, in the above embodiment, a flexible linear blade made of synthetic resin is used as the brush cutting blade 12 as shown in FIG. 1, but instead of this, a tip saw 39 is used as shown in FIG. Also good.

  As shown in FIG. 8, the tip saw 39 is a metal disk, and a number of cemented carbide chips are provided along the outer peripheral edge of the disk. Of course, it is possible to use a cutting blade in which a carbide tip is not provided and a large number of cutting blades are formed.

  And in the said embodiment, as shown to Fig.4 (a), (b), although the upper cover 18 and the lower cover 19 were integrally formed and it was set as the cover main body 16, it replaces with this. Although not shown, the upper cover 18 and the lower cover 19 may be formed separately, and each may be separately detachably attached to the handle shaft 13. Further, the upper cover 18 and the lower cover 19 may be attached not to the handle shaft 13 directly but to a cover (not shown) that covers the brush blade 12, for example.

  Moreover, in the said embodiment, as shown in FIG. 1, although the cover main body 16 was formed by the mesh-shaped part 20, it replaces with this, the plate-shaped body (a sheet-like body is included) in which many small holes were formed, Alternatively, a transparent plastic plate may be used. In short, the cover body 16 may be anything that can be seen through the other side and can protect flying objects such as cut grass, sand, and pebbles.

  When the lower cover 19 is formed of a plate-like body having a large number of small holes or a transparent plastic plate, the lower cover 19 is formed of a flexible material. The mowing work can be performed in a state where the lower end portion is in contact with the ground. By bringing the lower end portion of the lower cover 19 into contact with the ground, it is possible to effectively protect the cut grass, sand, pebbles, etc. that are jumped off by the brush cutter 12 from flying toward the operator. .

  In the above embodiment, the brush blade 12 is rotationally driven by the engine, but instead, it may be rotationally driven by an electric motor.

  In the above embodiment, the cut portion 29 is formed in the lower cover 19, but the cut portion 29 may be formed in the upper cover 18 instead.

  As described above, the protective cover for a brush cutter according to the present invention and the brush cutter including the same are splashed off by the brush cutter during the brushing operation, and the central axis of the handle shaft is based on the central axis of the handle shaft. It is possible to protect the worker from flying objects that fly through the upper path on the side farther from the ground, and has an excellent effect of performing the brushing work while visually observing the cutting blade. It is suitable for application to a protective cover for a trimmer and a trimmer having the same.

It is a top view which shows the protective cover for brush cutters attached to the brush cutter which concerns on 1st Embodiment of this invention. It is a fragmentary sectional front view which shows the protective cover for brush cutters attached to the brush cutter which concerns on the same 1st Embodiment. It is a partial expanded sectional view of the protective cover for brush cutters shown in FIG. It is a figure which shows the cover main body of the protection cover for brush cutters of the 1st embodiment, (a) is a front, (b) is AA sectional drawing. It is a figure which shows the upper side attachment part of the protective cover for brush cutters of the 1st Embodiment, (a) is the front view seen from the attachment surface side, (b) is a top view, (c) is BB sectional drawing. , (D) is a rear view. It is a figure which shows the upper side attaching part of the protection cover for brush cutters of the 1st embodiment, (a) is DC sectional drawing, (b) is CC sectional drawing, (c) is a side view. It is a figure which shows the lower attachment part of the protective cover for brush cutters of the 1st Embodiment, (a) is the front view seen from the attachment surface side, (b) is a top view, (c) is a rear view, d) is a side view, (e) is an EF cross-sectional view, and (f) is an EE cross-sectional view. It is a fragmentary top view which shows the front-end | tip part of the brush cutter which concerns on other embodiment of the device. It is a perspective view which shows an example of the conventional brush cutter cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Brush cutter 12 Brush cutter 13 Handle shaft 14 Protective cover for brush cutter 15 Cutting blade rotating body 15a Blade through hole 16 Cover body 17 Detachment mechanism 18 Upper cover 19 Lower cover 20 Mesh portion 21 Insertion hole 22 Upper path 23 Lower path 24 Contour reinforcement part 25 Horizontal reinforcement part 26 Hole reinforcement part 27 Upper reinforcement part 28 Lower reinforcement part 29 Notch part 30 Extension part 31 Engagement protrusion 32 Engagement hole 33 Upper attachment part 33a Gripping part 34 Lower attachment Part 35 Mounting surface 36 Bolt 37 Support part 38 Bolt hole 39 Tip saw

Claims (9)

A brush cutter for protecting a worker from a flying object that is used by being attached to a brush cutter that is rotatably provided at a tip end portion of a handle shaft and that is swung by the brush cutter. Protective cover for
A protective cover for a brush cutter, comprising a translucent upper cover disposed at an upper position on the side farther from the ground than the central axis with respect to the central axis of the handle shaft.   2. The protective cover for a brush cutter according to claim 1, wherein the upper cover has a net-like portion for protecting an operator from the flying object.   The said upper cover has a plate-shaped part in which many small holes for protecting an operator from the said flying object were formed, The protective cover for brush cutters of Claim 1 characterized by the above-mentioned. An attachment / detachment mechanism for detachably attaching the upper cover to the handle shaft;
The attachment / detachment mechanism includes a reinforcing portion for reinforcing the upper cover,
An attachment portion attached to the handle shaft;
An engagement hole provided in one of the reinforcing portion and the mounting portion;
The cutting according to any one of claims 1 to 3, further comprising an engagement protrusion provided on the other of the reinforcement portion and the attachment portion and detachably engaged with the engagement hole. Protective cover for dispenser.   The cutting according to any one of claims 1 to 4, further comprising a lower cover disposed at a lower position closer to the ground than the central axis with respect to the central axis of the handle shaft. Protective cover for dispenser.   The said lower cover has translucency and has a net-like part for protecting an operator from the flying object, or a plate-like part in which many small holes are formed. Protective cover for brush cutter. The upper cover and the lower cover having flexibility to connect to each other;
An insertion hole for inserting the handle shaft;
It is formed in one or both of the upper cover and the lower cover, and includes a notch portion for guiding the handle shaft from the outside of the upper cover and the lower cover to the insertion hole. A protective cover for a brush cutter according to claim 5 or 6.   A brush cutter comprising the protective cover for a brush cutter according to any one of claims 1 to 7.   The brush cutter according to claim 8, wherein the brush cutter is a flexible wire blade or a tip saw.

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