JP3166033U - Scatter protection cover for brush cutter - Google Patents

Abstract

An object of the present invention is to provide a shatter protection cover for a brush cutter, which can prevent a ground portion having a convex portion from being caught on the convex portion. A brush protection cover for a brush cutter mounted on a support provided with a handle is provided with an upper flat plate, a lower flat plate, an upper upper bent portion, an upper side bent portion, and It comprises a lower lower side bent piece 8E and a lower side bent piece. Furthermore, when the support is moved forward while swinging the support to the left and right, the first hooking prevention that prevents the edge 8E-1 of the lower bent portion 8E from being caught on the protrusion 26A of the ground 26 when the support is moved forward. Means 24 are provided. In addition, the first catching prevention means 24 is provided with a slope 24A-1 for moving over the convex portion 26A of the ground 26 so that the edge 8E-1 of the lower bent portion 8E of the lower side can cross over the convex portion 26A of the ground 26. [Selection diagram] FIG.

Description

  The present invention relates to a scattering protection cover for a brush cutter that is suitable for use in a brush cutter for cutting grass and the like grown on the ground.

  Conventionally, as this type of brush cutter, a long column, a cylindrical transmission mechanism storage body provided on the distal end side of the column, a cutter member provided rotatably on the cylindrical transmission mechanism storage unit, A brush cutter comprising at least a driving device that is a driving source for rotationally driving the cutter member and is provided on the rear end side of the column, and a grip handle provided on the column to swing the column to the left and right. In addition, it is detachably attached to the support column by the clamping means so as to be positioned between the cutter member of the brush cutter and the driving device, and the clamping means is attached to the scattering protection cover for the brush cutter. The struts are fixed between the pair of fitting recesses by a fixed fixing member and a column holding member provided on the fixing member and provided with a pair of fitting recesses for holding the column. That is configured to be sandwiched and fixed has been developed (e.g., see Patent document 1).

  Furthermore, as a scattering protection cover for a brush cutter used in this type of brush cutter, an upper flat plate portion extending upward and one side from the post in a state where the post is clamped by the clamping means, and the upper flat plate A lower flat plate portion extending downward and on both sides of the support column in a state where the support column is clamped by the clamping means, and provided on the upper side of the upper flat plate portion toward the tip end side of the support column The upper upper side bent piece portion that is bent, the upper side side bent piece portion that is provided on one side of the upper flat plate portion and bent toward the tip side of the column, and the lower side of the lower flat plate portion A lower lower side bent piece formed by bending toward the front end side of the support column, and a lower side side folding formed by bending toward the front end side of the support column provided on both sides of the lower flat plate part, respectively. Song For making the support column pivotable about a center line in the longitudinal direction of the support column on a corner outer peripheral wall between the one part and the lower lower side bent piece part and the lower side bent piece part. The thing formed from the rotatable shape part is developed (for example, refer patent document 1).

Registered Utility Model Gazette of Utility Model Registration No. 3149948

  However, the scattering protection cover for a brush cutter under development by the applicant described in the registered utility model publication of the above-mentioned utility model registration No. 3149948 may have the following problems. all right.

  That is, in the scattering protection cover 100 for a brush cutter described in the registered utility model publication of the above-mentioned utility model registration No. 3149948, as shown in FIG. 24, it is bent toward the tip end side of the support column at the lower side of the lower flat plate portion 101. The lower lower side bent piece 102 is provided, so that the operator can support the cutter member in a state where the rotation surface of the cutter member is substantially parallel to the ground, and while holding the grip handle and swinging the support column left and right. When the brush 103 is moved forward while the brush 103 is moved, if there is a convex portion 103A on the ground 103, the edge 102A of the lower lower bent piece 102 is caught by the convex portion 103A. It has been confirmed through experiments that there is a problem in that the forward movement of the blade is not performed smoothly and the brushing operation cannot be performed smoothly.

  Further, in the scattering protection cover for a brush cutter described in the registered utility model publication of the above-mentioned utility model registration No. 3149948, the support is provided on the outer peripheral wall of the corner between the lower lower side bent piece and the lower side bent piece. Since the pivotable shape part that allows the column to pivot smoothly with the center line in the longitudinal direction as the rotation axis is provided, as shown in FIG. If there is a convex part (including a step) 103A, the edge of the pivotable shape part is caught on the convex part 103A in the same manner as the edge 102A of the lower lower bent piece 102, and the front of the brush cutter It has been confirmed through experiments that there is a problem in that the movement to the center is not performed smoothly and the mowing operation cannot be performed smoothly.

  The purpose of the present invention was made in view of the above problems, and even if there is a convex portion on the ground, cutting with excellent handling properties (operability) and safety that can prevent the convex portion from being caught. The object is to provide a splash protection cover for a blower.

  In order to achieve the object of the present invention, a long column, a cylindrical transmission mechanism storage body provided on the distal end side of the column, a cutter member rotatably provided in the cylindrical transmission mechanism storage unit, A brush cutter comprising at least a driving device that is a driving source for rotationally driving the cutter member and is provided on the rear end side of the column, and a grip handle provided on the column to swing the column to the left and right. The fixing device is detachably attached to the column by the clamping means so as to be positioned between the cutter member of the brush cutter and the driving device, and the clamping means is fixed to the scattering protection cover for the brush cutter A structure in which the column is clamped and fixed between the pair of fitting recesses by a member and a column holding member provided on the fixing member and provided with a pair of fitting recesses for holding the column. The brush protection cover for a brush cutter, wherein the brush protection cover for the brush cutter has an upper flat plate portion that extends upward and one side from the support column in a state where the support column is clamped by the clamping means, and the upper flat plate portion. A lower flat plate portion that is continuous with the face plate portion and extends downward and on both sides of the support column with the support means held between the support plate, and an upper side of the upper flat plate portion that faces the tip side of the support column. An upper upper side bent piece portion that is bent and an upper side bent piece portion that is provided on one side of the upper flat plate portion and is bent toward the tip side of the support column, and the lower flat plate portion. A lower lower side bent piece portion provided on the lower side and bent toward the front end side of the support column, and a lower side provided on both sides of the lower flat plate portion and bent toward the front end side of the support column. And the edge of the lower lower bent piece is pulled to the convex portion of the ground when the support is moved forward by squeezing the grip handle and moving the support to the left and right. The present invention is characterized in that first catching blocking means for blocking the hooking is provided.

  Further, according to the present invention, the column can be rotated about the center line in the longitudinal direction of the column on the outer peripheral wall of the corner between the lower lower side bent piece and the lower side bent piece. A pivotable shape portion for preventing the end of the pivotable shape portion from being caught by a convex portion of the ground when the grip handle is gripped and the support column is swung to the left or right. This is characterized in that two catching prevention means are provided.

  Further, according to the present invention, when the first catching blocking means grips the grip handle and swings the support column to the left and right to move the support column forward, the edge of the lower lower side bent piece portion is At least a slope portion for overcoming a convex portion for getting over the convex portion of the ground is provided, and the second catching preventing means is rotatable when the support handle is swung left and right while holding the grip handle. It is characterized in that it has at least a slope part for overriding the convex part for allowing the edge of the shape part to get over the convex part on the ground.

  Further, the present invention provides a fixing member for the clamping means, an L-shaped fixing tool having an L-shaped cross section, and an attachment frame for slidably mounting the column holding member to the L-shaped fixing tool, The mounting frame is composed of at least a second fastener for fixing the mounting frame to the L-shaped fixture, and the L-shaped fixture is formed integrally with the upper flat plate portion. .

  Further, according to the present invention, the post holding member of the holding means includes a first holding frame member having a fitting recess, a second holding frame member having a fitting recess, and the first holding frame member. An attachment frame body in which the first clamping frame member and the second clamping frame member are fixed to the scattering protection cover for the brush cutter in a state where the fitting concave part of the second clamping frame member faces the fitting concave part of the second clamping frame member At least a clamping fastener that is slidably attached to the first clamping frame member, and the first clamping frame member and the second clamping frame member are prismatic block bodies having the same shape. It is.

  According to the present invention, even if there is a convex portion on the ground, it is prevented from being caught by the convex portion, and while holding the grip handle and swinging the support column smoothly from side to side, the support column is moved forward. A scattering protection cover for a brush cutter that makes it possible to provide a brush cutter that efficiently cuts grass growing on the ground while moving smoothly is obtained.

  Further, according to the present invention, the upper flat plate portion, the upper upper side bent piece portion that is provided on the upper side of the upper flat plate portion and is bent toward the distal end side of the support column, and one of the upper flat plate portions. While using the brush cutter by the upper side bent piece provided on the side and bent toward the tip end side of the support column, from the cutter member toward the upper body side of the brush cutter operator of the brush cutter Grass and stones scattered through the upper side of the column are blocked, and at least the lower plane plate part and the lower side of the lower plane plate unit are provided on the tip side of the column. The lower lower side bent piece portion bent toward the lower side plate and the lower side side bent piece portion provided on both sides of the lower flat plate portion and bent toward the distal end side of the support column, while using the brush cutter, Brush cutter operator of the brush cutter Towards the lower body side, grass and stones scattered from the cutter member through the lower side of the support block the scattered matter, so that during the brushing operation, the brush cutter goes from the head to the feet. All wearing items, such as hats, clothing, gloves, work shoes, etc., to be worn will not collide with scattered objects such as grass and stones, and grass and grass juice will not It does not adhere to the wearer's wear and do not stain or damage the wear, and stones and other scattered objects are present on the body of the mower, such as the head, face, and limbs. Since it does not hit the body and damages the body, a scattering protection cover for a brush cutter that makes it possible to provide a brush cutter with excellent usability and safety can be obtained.

It is a whole side view showing a brush cutter concerning one embodiment of the present invention. It is a principal part top view which abbreviate | omits the support | pillar rear side of the brush cutter concerning one Embodiment of this invention. It is a principal part front view which abbreviate | omits the support | pillar rear side of the brush cutter concerning one Embodiment of this invention. It is an expanded principal part sectional drawing which shows the clamping means which clamps and fixes the scattering protection cover for brush cutters concerning one Embodiment of this invention to a support | pillar. [BRIEF DESCRIPTION OF THE DRAWINGS] It is a front view of the scattering protection cover for brush cutters concerning one Embodiment of this invention. It is a top view of the scattering protection cover for a brush cutter according to an embodiment of the present invention. It is a bottom view of the scattering protection cover for a brush cutter according to an embodiment of the present invention. It is a left view of the scattering protection cover for a brush cutter according to an embodiment of the present invention. It is a right view of the scattering protection cover for brush cutters concerning one Embodiment of this invention. It is a side view which shows the state which attached the support | pillar clamping member to the fixing member which comprises the clamping means concerning one Embodiment of this invention. It is an enlarged top view which shows the attachment frame body of the fixing member concerning one Embodiment of this invention. It is an expansion perspective view which shows the whole structure of the support | pillar clamping member which comprises the clamping means concerning one Embodiment of this invention. It is an enlarged top view of the clamping plate member of the support | pillar clamping member concerning one Embodiment of this invention. It is an expansion perspective view which shows the state which fractured | ruptured the principal part of the frame member for clamping of the support | pillar clamping member concerning one Embodiment of this invention. It is an expansion perspective view for demonstrating the state which attached the support | pillar clamping member to the fixing member of the clamping means concerning one Embodiment of this invention. It is a front view of the scattering protection cover for a brush cutter in a state in which a clamping means is not attached according to an embodiment of the present invention. It is a principal part expanded sectional view of the lower lower part bending piece part of the scattering protection cover for brush cutters concerning one Embodiment of this invention. It is a principal part expanded sectional view of the lower lower part bending piece part of the scattering protection cover for brush cutters concerning the other embodiment 1 of this invention. It is a principal part expanded sectional view of the lower plane board part of the scattering protection cover for brush cutters concerning other embodiment 2 of this invention. It is a principal part expanded sectional view of the lower plane board part of the scattering protection cover for brush cutters concerning other embodiment 3 of this invention. It is a front view of the scattering protection cover for brush cutters in the state which is related with other embodiment 4 of this invention, and does not attach a clamping means. FIG. 22 is an enlarged end view taken along the line AA in FIG. 21. It is a side view which shows the state which concerns on other embodiment 5 of this invention, and attached the support | pillar clamping member to the attachment frame of the fixing member which comprises the clamping means. It is a principal part expanded sectional view of the lower lower part bending piece part of the scattering protection cover for brush cutters which shows a prior art example.

Mode for carrying out the invention

  Hereinafter, exemplary embodiments of the present invention will be specifically described with reference to FIGS.

  A brush cutter 1 according to an embodiment shown in FIG. 1 has a long column 2, a cylindrical transmission mechanism housing 3 provided on the distal end side of the column 2, and the cylindrical transmission mechanism housing 3 can be rotated. A cutter member 4 provided on the column 2, a drive device 5 provided on the rear end side of the column 2 as a drive source for rotationally driving the cutter member 4, and a grip provided on the column 2 for swinging the column 2 left and right A handle 6, a shoulder band 7 attached to a portion of the column 2 positioned between the grip handle 6 and the drive device 5, and a brush cutter detachably attached between the cutter member 4 and the grip handle 6. The scattering protection cover 8 for use is provided at least.

  The support column 2 is made of an elongated tubular body having a reduced diameter such as stainless steel or aluminum having a diameter of about 25 mm and a length of about 160 cm. The front end (tip) of the support column 2 is integrally provided on the outer peripheral side surface of the cylindrical transmission mechanism housing 3. The cutter member 4 is accommodated in the cylindrical transmission mechanism by the rotational force of the driving device 5 that is transmitted through an elongated transmission shaft (not shown) provided in the column 2 and a transmission gear group (not shown) provided in the transmission mechanism housing 3. The lower surface portion of the body 3 is rotated at a high speed.

  As shown in FIG. 1, the cutter member 4 that rotates at a high speed on the lower surface portion of the cylindrical transmission mechanism housing 3 has a crossing angle between the longitudinal center axis X <b> 1 of the transmission mechanism housing 3 and the rotation surface X <b> 2 of the cutter member 4. It is installed so that R1 is substantially perpendicular. As shown in FIG. 1, the front end (tip) of the support column 2 has an intersection angle R <b> 2 between the extension line of the center line X <b> 3 in the longitudinal direction of the support column 2 and the extension surface of the rotation surface X <b> 2 of the cutter member 4. Thus, it is integrally provided on the outer peripheral side surface of the cylindrical transmission mechanism housing 3. The rotation direction of the cutter member 4 is set to rotate in the direction of the arrow P1 shown in FIG. 2, that is, counterclockwise when the cutter member 4 is viewed from above. The cutter member 4 may be a wire method using nylon wire or the like, or may be a metal disk method having a saw blade on the outer periphery. However, in this embodiment, as the wire method, the transmission mechanism housing 3 The length of the cutter member 4 is set so that the distance dimension L6 from the vertical center axis X1 to the tip of the cutter member 4 is about 230 mm.

  The drive device 5 is composed of a two-cycle engine, and is fixed to the rear end side of the column 2 so that it can be replaced. The grip handle 6 is made of stainless steel, aluminum or the like, and the brush cutter 1 of the brush cutter 1 uses both hands while the shoulder band 7 is hung on the shoulder of the brush cutter 1 of the brush cutter 1. The support 2 is shaped so that it can be smoothly swung from side to side. The shoulder band 7 is made of cloth or leather, and is provided at a position suitable for supporting the driving device 5 provided on the rear end side of the column 2 by suspending the column 2 on the shoulder of the brush cutter operator of the brush cutter 1. It has been.

  The brush cutter scattering protection cover 8 is detachably attached to the support column 2 by the clamping means 9, and the attachment position to the support column 2 is substantially in the longitudinal direction of the support column 2 and the longitudinal direction of the support column 2. It is designed to be adjustable in both directions at right angles. The clamping means 9 is comprised from the fixing member 10 fixed to the scattering protection cover 8 side for brush cutters, and the support | pillar clamping member 11 provided in this fixing member 10 (refer FIGS. 2-4). In a state where the brush cutter scattering protection cover 8 is attached to the support 2, the brush cutter scattering protection cover 8 is arranged so that the tip of the rotating cutter member 4 does not contact the brush cutter scattering protection cover 8. The attachment position to the column 2 is set.

  As shown in FIG. 3 and FIG. 5, the brush cutter protective cover 8 includes an upper flat plate portion 8 </ b> A that extends upward and one side from the support 2 in a state where the support 2 is held by the holding means 9. Provided on the lower flat plate portion 8B which is continuous with the upper flat plate portion 8A and extends downward and on both sides of the support column 2 with the holding means 9 held between the upper flat plate portion 8A and the upper side 8A-1 of the upper flat plate portion 8A. The upper side bent piece 8C that is bent toward the tip end side of the support column 2 and the upper side that is provided on one side 8A-2 of the upper flat plate portion 8A and bent toward the tip end side of the support column 2 Side bent piece 8D, lower lower bent piece 8E provided on the lower side 8B-1 of the lower flat plate portion 8B and bent toward the tip side of the column 2, and both sides 8B- of the lower flat plate portion 8B 2, 8B-3, on the tip side of the column 2 The lower side plate bent portions 8F and 8G that are bent in the past, and the lower flat plate portion 8B that protrudes outward from the outer peripheral surface in the longitudinal direction of the support column 2 in a state where the support column 2 is held by the holding means 9. A lower upper side bent piece portion 8H which is provided at the upper side 8B-4 portion and is bent toward the tip end side of the column 2, and includes an upper flat plate portion 8A, a lower flat plate portion 8B, an upper upper side bent piece portion 8C, The upper side bent piece 8D, the lower lower bent piece 8E, the lower bent side pieces 8F and 8G, and the lower upper bent piece 8H are integrally formed of synthetic resin.

  As shown in FIG. 1, when the brush cutter scattering protection cover 8 is fixed to the column 2 by clamping the column 2 with the clamping means 9, the upper plane plate portion 8 </ b> A and the lower plane plate are arranged. The portion 8B extends in a direction substantially perpendicular to the longitudinal center line X3 of the column 2 and, as shown in FIG. 3, the other side edge 8A-3 of the upper flat plate portion 8A is Without projecting outward from the outer peripheral surface of the support column 2 and close to the other side edge 8A-3 of the upper flat plate portion 8A among the side sides 8B-2 and 8B-3 of the lower flat plate portion 8B. The side 8 </ b> B- 3 is protruded outward from the outer peripheral surface of the support 2.

  The brush cutter scattering protection cover 8 has a fixing member 10 of the clamping means 9 fixed along the vicinity of the edge of the other side edge 8A-3 of the upper flat plate portion 8A, and a pair of strut clamping members 11. In a state in which the support column 2 is sandwiched and fixed between the fitting recesses 17A and 18A, a gap G is formed between the other side edge 8A-3 of the upper flat plate portion 8A and the outer peripheral surface of the support column 2. (See FIGS. 3 and 4). This gap G is obtained when a worker who grips the grip handle 6 and swings the support column 2 to the right and left to perform the brushing operation from the outside of the other side edge 8A-3 of the upper flat plate portion 8A. The size is set such that the entire cylindrical transmission mechanism housing 3 can be directly seen.

  As shown in FIGS. 3 and 5, the brush protection cover 8 includes a corner outer peripheral wall 8K-1 and a lower lower bent piece between a lower lower bent piece 8E and a lower side bent piece 8F. Scatter protection for a brush cutter by rotating the column 2 around the corner outer peripheral wall 8K-2 between the portion 8E and the lower side bent piece 8G about the longitudinal center line X3 of the column 2 as a rotation axis When the cover 8 is rotated about the center line X3 in the longitudinal direction of the support column 2 as a rotation axis, the cover 8 is a rotatable shape portion for smoothly performing the rotation. The pivotable shape portion includes a corner outer peripheral wall 8K-1 between the lower lower side bent piece 8E and the lower side bent piece 8F, and the lower lower bent piece 8E and the lower side bent piece 8G. The corner outer peripheral wall 8K-2 is formed as an inclined surface. In the present embodiment example, the corner outer peripheral wall 8K-1 and the corner outer peripheral wall 8K-2 are inclined surfaces having an inclination angle within a range of about 30 degrees to about 45 degrees, thereby enabling a rotatable shape part. Is formed.

  As shown in FIG. 3 and FIG. 17, the handle 8 is swung left and right and the support 2 is moved forward on the edge 8E-1 of the lower lower bent piece 8E of the brush protection cover 8 for the brush cutter. The first catching prevention means 24 is provided for preventing the edge 8E-1 of the lower lower bent piece 8E from being caught on the convex portion 26A of the ground 26 when the brushing operation is performed while being moved. As shown in FIG. 17, the first hook preventing means 24 has a guide member portion 24A having a mountain-shaped cross section, and one end side of the guide member portion 24A is connected to the edge 8E-1 of the lower lower bent piece 8E. A locking member 24B to be locked, a flat surface member 24C which is integrally provided on the other end side of the guide member portion 24A and fixes the guide member portion 24A to the lower lower bent piece 8E, and the flat member The surface member 24C includes a bolt washer and a mounting member 24D including a nut for fixing the surface member 24C to the lower lower bent piece 8E. The guide member portion 24A of the first catching prevention means 24 has an edge 8E-1 of the lower lower bent piece 8E when the support handle 2 is moved forward by grasping the grip handle 6 and swinging the support post 2 left and right. Is configured to have a convex portion climbing slope portion 24A-1 for getting over the convex portion 26A (including a step) of the ground 26.

Edges of the rotatable shape portions formed on the corner outer peripheral walls 8K-1 and 8K-2 between the lower lower side bent piece 8E and the lower side bent pieces 8F and 8G of the scattering protective cover 8 for the brush cutter As shown in FIG. 3, when the grip handle 6 is gripped and the support column 2 is swung to the left or right, the second catching prevention is prevented from being caught on the inclined ground 26 or the convex portion 26A of the inclined ground 26. Means 25 are provided. The second catching prevention means 25 has the same structure as the first catching prevention means 24 specifically shown in FIG.

  As shown in FIG. 4, the fixing member 10 serves to reinforce the L-shaped fixing device 12 having an L-shaped cross section and the L-shaped fixing device 12 to be fixed to the scattering protection cover 8 for a brush cutter. A reinforcing plate 13, a plurality of first fasteners 14 made up of fixing bolts and washers for fixing the reinforcing plate 13 and the L-shaped fixing device 12 to the scattering protection cover 8 for a brush cutter, and an L-shaped fixing device 12 At least from a plurality of second fasteners 16 comprising a mounting frame 15 for slidably mounting the column holding member 11 and a fixing bolt and a washer for fixing the mounting frame 15 to the L-shaped fixture 12. Composed. As shown in FIG. 11, the mounting frame 15 includes a sliding groove 15 </ b> A for allowing the column holding member 11 to slide in a direction substantially perpendicular to the longitudinal direction of the column 2, and a second fastener 16. Two attachment holes 15B for second fasteners for attachment are provided. The attachment frame 15 is made of a material that is as light and strong as possible.

  The second fastener 16 can function as a drop-off preventing member that prevents the column holding member 11 fitted in the slide groove 15A from dropping out of the slide groove 15A. For this purpose, the length dimension of the fixing bolt of the second fastener 16 is such that the screw rod 20 of the column holding member 11 slides in the sliding groove 15A of the mounting frame 15 to the left and right ends of the sliding groove 15A. When moved, the retaining head 20A provided at the rear end of the screw rod 20 is locked (collised) with the tip of the fixing bolt of the second fastener 16, and the screw rod 20 of the column holding member 11 is moved. Are set to dimensions that allow the sliding frame 15A of the mounting frame 15 to be prevented from falling off (removing from) the left and right ends (see FIGS. 4 and 15).

  As shown in FIG. 10, the column holding member 11 includes a first holding frame member 17 in which a V-shaped fitting recess 17A is formed, and a second holding frame member 18 in which a V-shaped fitting recess 18A is provided. The second clamping frame member 18 is attached to the first clamping frame member 17 with the fitting concave portion 17A of the first clamping frame member 17 and the fitting concave portion 18A of the second clamping frame member 18 facing each other. The second clamping frame member 18 and the first clamping frame member 17 are configured by two clamping fasteners 19 for slidably mounting the mounting frame body 15 on the mounting frame body 15. The brush cutter shatter protection cover 8 is attached to the support column 2 by holding the support column 2 between the engagement recess 17A and the engagement recess 18A of the second holding frame member 18 (see FIG. 3). ). As shown in FIG. 3, the first clamping frame member 17 of the support pole clamping member 11 is first outward from the other side edge 8 </ b> A- 3 of the upper flat plate portion 8 </ b> A in the brush cutter scattering protection cover 8. The fixing frame 10 is mounted on the mounting frame 15 so that the fitting recess 17A of the holding frame member 17 is positioned.

  As shown in FIGS. 10 and 12, the two clamping fasteners 19 include a metal screw rod 20 provided with a head 20 </ b> A for retaining at the rear end, and a tip end side of the screw rod 20. It consists of a metal wing nut-like nut body 21 to be screwed together and a metal anti-rotation member 22 fitted to the rear end side of the screw thread 20, and the nut body 21 is screwed by a human finger or a tool. Thus, by moving the second clamping frame member 18 to the first clamping frame member 17 side, the fitting recess 17A of the first clamping frame member 17 and the fitting recess 18A of the second clamping frame member 18 are moved. The support column 2 can be clamped manually without using a tool. The outer diameter of the screw rod 20 is set to a size that allows the sliding groove 15A of the attachment frame 15 to slide. The length of the sliding groove 15 </ b> A of the attachment frame 15 is set to a dimension that allows the support holding member 11 to slide with respect to the attachment frame 15 in a range of about 40 mm to about 60 mm. The attachment position of the mounting frame 15 to the rising one side 12A of the L-shaped fixture 12 and the height dimension of the rising one side 12A of the L-shaped fixing device 12 are such that the wing nut-shaped nut body 21 of the clamping fastener 19 is When picking and screwing with a finger, the nut body 21 can be screwed without the finger or the like coming into contact with the back surface side of the upper flat plate portion 8A of the brush cutter scattering protection cover 8. Set to dimensions.

  The brush cutter scattering protective cover 8 according to the embodiment is made of synthetic resin from the viewpoint of weight reduction and manufacturability. That is, using the upper and lower molds, the upper flat plate portion 8A, the lower flat plate portion 8B, the upper upper side bent piece portion 8C, the upper side bent piece portion 8D, the lower lower bent piece portion 8E, and the lower side bent piece portion. 8F, G and the lower upper side bent piece 8H are integrally formed of synthetic resin. Further, in order to increase the strength of the brush protection cover 8 for the brush cutter, a wire mesh may be integrally attached to the back side of the brush protection cover 8 for the brush cutter, and the brush protection cover 8 of the brush cutter In order to prevent adhesion of garbage such as grass on the front side (inner side), a slipping agent such as silicon may be applied to the front side (inner side) of the scattering protection cover 8 for the brush cutter.

  The L-shaped fixture 12 of the fixing member 10 is made of a material that is as light and strong as possible, and is parallel to the other side end 8A-3 of the upper flat plate portion 8A of the brush protection cover 8 for the brush cutter. In this way, the upper flat plate portion 8A is fixed to the back side by the first fastener 14. The reinforcing plate 13 of the fixing member 10 is made of a material that is as light and strong as possible, and is fixed to the front side of the upper flat plate portion 8A by the first fastener 14 so as to face the L-shaped fixture 12.

  The first clamping frame member 17 of the support pole clamping member 11 is made of a material that is as light and strong as possible, and has an elongated box shape as shown in FIG. Between the fitting recess 17A, the two upper surface through holes 17B through which the screw rod 20 passes, the two lower surface through holes 17C through which the screw rod 20 passes, and the upper surface through hole 17B and the lower surface through hole 17C. The cylindrical reinforcing body 17D is provided at a position where the screw rod 20 penetrating the upper surface through hole 17B and the lower surface through hole 17C can be fitted. The cylindrical reinforcing body 17D moves the second clamping frame member 18 toward the first clamping frame member 17 side by screwing the nut body 21, so that the fitting of the first clamping frame member 17 is performed. When the support column 2 is clamped between the mating recess 17A and the fitting recess 18A of the second clamping frame member 18, the first clamping frame member 17 is prevented from being deformed.

  The second clamping frame member 18 of the column holding member 11 is made of an elongated steel plate, and as shown in FIGS. 12 and 13, a V-shaped fitting recess 18A for holding the column 2 and one screw An upper surface through hole 18B through which the rod 20 penetrates and an opening 18C into which the other screw rod 20 is engaged are provided. As shown in FIG. 12, the second clamping frame member 18 rotates the second clamping frame member 18 in one direction around one screw rod 20 passing through the upper surface through hole 18B. The opening 18C to be cut is locked to the other screw rod 20, and the second clamping frame member 18 is rotated in the other direction around the one screw rod 20 passing through the upper surface through hole 18B. Thus, the opening 18C cut from the other screw rod 20 is released.

  As shown in FIG. 10, the nut body 21 screwed from the tip of the screw rod 20 is prevented from coming out of the tip of the screw rod 20 at the tip of the screw rod 20 constituting the clamping fastener 19. A split pin 23 is provided. As shown in FIG. 12, the anti-rotation member 22 that constitutes the clamping fastener 19 has a rectangular plate shape, and is positioned above the head 20 </ b> A of the screw rod 20, so that the nut body 21 is screwed. When the second holding frame member 18 is moved to the first holding frame member 17 side, the screw rod 20 is rotated by preventing the rotation of the detent member 22 by the mounting frame 15. It has a function to prevent this (see FIG. 15).

  The fitting recess 17A of the first clamping frame member 17 and the fitting recess 18A of the second clamping frame member 18 prevent the outer peripheral surface of the column 2 from being damaged when the column 2 is clamped. For this purpose, an elastic material made of rubber sheet for preventing damage is provided, and the edges of the fitting recess 17A and the fitting recess 18A are edged (chamfered).

  As shown in FIG. 16, the brush cutter protective cover 8 has a vertical width L1 from the uppermost end of the upper upper bent piece 8 </ b> C to the lower end of the lower lower bent piece 8 </ b> E so that the lower upper bent piece is about 320 mm. The vertical width dimension L2 from the uppermost end of the portion 8H to the lowermost end of the lower lower bent piece 8E is about 120 mm, and the horizontal width from the outermost periphery of the lower side bent piece 8F to the outermost periphery of the lower side bent piece 8G The dimension L3 is set to about 350 mm, the horizontal width dimension L4 at the uppermost end of the upper upper side bent piece 8C is set to about 250 mm, and the horizontal width L5 at the uppermost end of the lower upper side bent piece 8H is set to about 100 mm. Moreover, the brushing cutter scattering protective cover 8 has the inclined surfaces of the corner outer peripheral wall 8K1 and the corner outer peripheral wall 8K2 in a range of about 30 degrees to about 45 degrees with respect to the lowermost end surface of the lower lower bent piece 8E. The upper upper side bent piece 8C, the upper side bent piece 8D, the lower lower bent piece 8E, the lower side bent piece 8F, 8G and the lower upper bent piece 8H are It is formed so as to be bent at an angle of about 45 degrees with respect to 8A and the lower flat plate portion 8B. The brush cutter scattering protection cover 8 has a clamping means 9 attached in advance to the upper flat plate portion 8A, and the first catching blocking means 24 is attached to the edge 8E-1 of the lower lower bent piece 8E. After the hook preventing means 25 is attached in advance to the edges of the rotatable shape portions formed on the corner outer peripheral walls 8K-1 and 8K-2, the holding means 9 is attached to and detached from the column 2 by the clamping means 9. It can be attached as possible.

  Next, an example of a procedure for attaching the brush cutter scattering protection cover 8 to the brush cutter 1 according to the above-described embodiment will be specifically described.

  First, as shown in FIG. 12, the first clamping frame member 17, the second clamping frame member 18, the two screw rods 20, the two nut bodies 21, and the two locking members 22 are assembled. The assembly of the column holding member 11 is completed in advance. In this case, the lower end through-hole 17C and the upper-surface through-hole of the screw rod 20 in a state in which the anti-rotation member 22 is fitted are directed from the lower surface through hole 17C of the first clamping frame member 17 toward the upper surface through hole 17B. After penetrating the hole 17B, the second clamping frame member 18 and the nut body 21 are attached to the screw rod 20 in this order from the tip end side of the screw rod 20, and then the tip portion of the screw rod 20 is used to prevent the screw rod 20 from coming off. By fixing the split pin 23, it is preferable to complete the assembly of the support pinching member 11.

  Next, the sliding provided on the attachment frame 15 of the fixing member 10 in which the two screw rods 20 constituting the assembly of the column holding member 11 are fixed in advance to the scattering protection cover 8 for the brush cutter. The support | pillar clamping member 11 is mounted | worn with the fixing member 10 by making it fit into the groove | channel 15A from the edge part of the sliding groove | channel 15A. In this case, the screw rod 20 is fitted into the sliding groove 15A so that the rotation preventing member 22 is positioned below the sliding groove 15A of the attachment frame 15. The fixing member 10 fixed in advance to the brush cutter scattering protection cover 8 is parallel to the other side 8A-3 of the upper flat plate portion 8A of the brush cutter scattering protection cover 8. Further, on the rising side 12A of the L-shaped fixture 12 fixed in advance by the first fastener 14 on the back side of the upper flat plate portion 8A, the surface side (inner bottom) facing the sliding groove 15A of the mounting frame 15 ) May be performed by fastening the attachment frame 15 with the second fastener 16 (see FIG. 4).

  Next, the second clamping frame member 18 is rotated in the other direction around the one screw rod 20 penetrating the upper surface through hole 18B, so that the opening 18C cut from the other screw rod 20 is released. Then, the column 2 is installed between the fitting recess 17A of the first clamping frame member 17 and the fitting recess 18A of the second clamping frame member 18, and then the second clamping frame member 18 is installed. Is rotated in one direction around one screw rod 20 penetrating the upper surface through hole 18B, so that the opening 18C to be cut is locked to the other screw rod 20 (see FIG. 12).

  Then, the position of the 1st clamping frame member 17 and the 2nd clamping frame member 18 in the longitudinal direction of the support | pillar 2 is adjusted by moving the scattering protection cover 8 for brush cutters in the longitudinal direction of the support | pillar 2, and 2 The positions of the first clamping frame member 17 and the second clamping frame member 18 in the direction substantially perpendicular to the longitudinal direction of the support column 2 are adjusted by sliding the individual screw rods 20 in the sliding groove 15A. By doing so, the attachment position of the brush cutter scattering protection cover 8 to the support column 2 is adjusted so as to be an optimum position suitable for the height of the brush cutter operator.

  Finally, the nut body 21 is grasped with a finger or rotated by a tool, and the nut body 21 is screwed to move the second clamping frame member 18 toward the first clamping frame member 17 side. Thus, the mounting operation is completed by clamping the support column 2 between the fitting recess 17A of the first clamping frame member 17 and the fitting recess 18A of the second clamping frame member 18 (see FIG. 3).

  In addition, after the attachment to the brush cutter 1 is completed, when it is desired to finely adjust the attachment position of the brush protection cover 8 in the longitudinal direction to the support column 2, the nut body 21 is loosened, and the first position in the longitudinal direction of the support column 2 is relaxed. After finely adjusting the positions of the holding frame member 17 and the second holding frame member 18, the nut body 21 may be tightened again. Further, after the attachment to the brush cutter 1 is completed, when it is desired to finely adjust the positions of the first clamping frame member 17 and the second clamping frame member 18 in a direction substantially perpendicular to the longitudinal direction of the support column 2, the nut body After loosening 21 and sliding the two threaded rods 20 to the desired position in the sliding groove 15A, the nut body 21 may be tightened again.

  Next, an example of how to cut grass and the like by the brush cutter 1 having the above configuration will be specifically described.

(A) In the case of performing a brushing operation on grass or the like having a short length and a thin trunk grown on a wide ground, the brush cutter is in a state where the rotation surface X2 of the cutter member 4 is substantially parallel to the ground. With the lower end of the lower lower side bent piece 8E of the scattering protection cover 8 lightly pressed against the ground, the handle 6 is rotated while the handle 6 is gripped, and the column 2 is swung left and right. Short and high-growth grass that grows on the ground can be cut efficiently and safely. In this case, since the other side edge 8A-3 of the upper flat plate portion 8A of the scattering protective cover 8 for the brush cutter has a shape that does not protrude outward from the outer circumferential surface of the column 2 in the longitudinal direction, It is easy to see the outer periphery of the tip of the rotating cutter member 4 during the operation, and it is easy to adjust the inclination angle of the cutter member 4 according to the unevenness of the ground and the way of growing the grass. For example, it is possible to efficiently perform the mowing work. Further, if the lower support plate bending portion 8E of the lower flat plate portion 8B is lightly pressed against the ground, the support column 2 is rotated by the grip handle 6 about the longitudinal center line X3 of the support column 2 as a rotation axis. It is possible to perform grass cutting work without causing the tip of the cutter member 4 to bite into the ground.

(B) When cutting a long and thick grass growing on a large ground, the longitudinal center line X3 of the column 2 is rotated by the grip handle 6 while rotating the cutter member 4. By rotating as a shaft and tilting the brush cutter shatter protection cover 8 toward the counter-rotation direction side of the cutter member 4 (opposite to the direction of the arrow P1 in FIG. 2), it is on the extension line of the rotation surface X2 of the cutter member 4 The roots (borders) such as thick grasses are located. In that case, the other side edge 8A-3 of the upper flat plate portion 8A of the scattering protective cover 8 for the brush cutter has a shape that does not protrude outward from the outer peripheral surface in the longitudinal direction of the support column 2. During the operation, the positional relationship between the outer periphery of the tip of the rotating cutter member 4 and the root of the grass and the like is easy to see, and therefore the root of the thick grass and the like can be efficiently cut off without difficulty.

(C) In the case of brushing the grass grown around the standing tree, the cutter member 4 is rotated, and the grip handle 6 is used to rotate the center line in the longitudinal direction of the support column 2 as the rotation axis. The tip of the cutter member 4 is positioned away from the outer periphery of the standing tree so that the standing tree does not exist on the extended line of the rotation surface X2 of the cutter member 4 while tilting the scattering protection cover 8 toward the counter-rotation direction of the cutter member 4. . In that case, the other side edge 8A-3 of the upper flat plate portion 8A of the scattering protective cover 8 for the brush cutter has a shape that does not protrude outward from the outer peripheral surface in the longitudinal direction of the support column 2. During the operation, the positional relationship between the outer periphery of the tip of the rotating cutter member 4 and the root of the standing tree is easy to see, so that the grass growing around the standing tree can be efficiently cut without damaging the standing tree.

(D) In the case of cutting grass that grows along the curb or concrete wall, the cutter member 4 is rotated, and the grip handle 6 is used to rotate the center line X3 in the longitudinal direction of the column 2 as the rotation axis. The tip of the cutter member 4 is moved so that there is no curb or concrete wall on the extension line of the rotation surface X2 of the cutter member 4 while the scattering protection cover 8 for the brush cutter is tilted to the anti-rotation direction side of the cutter member 4. Is a position away from the perimeter of the curb or concrete wall. In that case, the other side edge 8A-3 of the upper flat plate portion 8A of the scattering protective cover 8 for the brush cutter has a shape that does not protrude outward from the outer peripheral surface in the longitudinal direction of the support column 2. During the operation, the positional relationship between the outer periphery of the rotating cutter member 4 and the outer periphery of the curbstone or concrete wall is easy to see, so that the edge of the cutter member 4 is not damaged by contacting the curbstone or concrete wall with the curbstone. And grass that grows along concrete walls can be cut efficiently.

(E) In the case of cutting grass that grows along the corrugated plate installed in the paddy field, the center line X3 in the longitudinal direction of the column 2 is set by the grip handle 6 while the cutter member 4 is rotated. The cutter member 4 is rotated so that it does not exist on the extension line of the rotation surface X2 of the cutter member 4 while being rotated as a rotation shaft and tilting the brush cutter scattering protection cover 8 toward the counter-rotation direction side of the cutter member 4. By setting the tip of the plate away from the outer periphery of the wave plate, the grass growing along the wave plate can be efficiently cut without damaging the wave plate.

(F) In the case of the grass cutting operation on the convex portion (including the stepped portion) 26A of the ground 26, the cutter member 4 is rotated horizontally with respect to the ground 26 and the grip handle When the column 2 is moved forward while swinging the column 2 left and right by 6, the edge 8E-1 of the lower lower bent piece 8E is moved by the slope 24A-1 for protruding over the convex portion of the first catching prevention means 24. The ground 26 is prevented from being caught by a convex portion (including a stepped portion) 26A, and the entire brush cutter 1 can be smoothly moved forward, and the ground with the convex portion (including a stepped portion etc.) 26A The grass that grows on the grass 26 can be cut efficiently.

(G) If the brush cutter 1 in use breaks down and it is necessary to use a spare brush cutter, and the spare brush cutter does not have a brush cutter protective cover, the brush cutter in use It is only necessary that the brush protection cover 8 for the brush cutter installed in 1 is attached to the spare brush cutter for use. In this case, even if the outer diameter of the support 2 of the brush cutter 1 in use is different from the outer diameter of the support brush cutter, the fitting recess 17A of the first clamping frame member 17 and the second clamping Since both fitting recesses 18A of the frame member 18 are V-shaped, the outer diameter of the support column 2 of the brush cutter 1 in use is between the first clamping frame member 17 and the second clamping frame member 18. Even if it is a column of a spare brush cutter that is different from that of the brush cutter, the column of the spare brush cutter can be firmly clamped. It is possible to use the duster protective cover 8 attached to a spare brush cutter.

  According to the brush cutter 1 of the one embodiment, the following effects (1) to (21) can be obtained.

(1) Grass growing on the horizontal ground 26 while rotating the post 2 forward while rotating the post 2 horizontally by the grip handle 6 while rotating the cutter member 4 horizontally with respect to the ground 26 , Even if the horizontal ground surface 26 has a convex portion (including a stepped portion) 26A, the convex portion (including the stepped portion or the like) 26A has an edge 8E of the lower lower bent piece 8E. -1 can be smoothly moved forward by the inclined portion 24A-1 for overriding the convex portion of the first catching prevention means 24 without being caught. Moreover, the grass growing on the horizontal ground 26 while rotating the cutter member 4 horizontally with respect to the ground 26 and moving the brush cutter 1 as a whole while swinging the support column 2 left and right by the grip handle 6. When the ground 26 in the direction in which the support column 2 is swung to the left and right is tilted when performing a kind of mowing operation, the rotatable shape portions formed on the corner outer peripheral walls 8K-1 and 8K-2 on the tilted ground 26 The second catching preventing means 25 can smoothly move the entire brush cutter 1 forward while smoothly swinging the support column 2 to the left and right without being caught by the second catching prevention means 25.

(2) Since the fixing member 10 is fixed along the other side edge 8A-3 of the upper flat plate portion 8 of the brush protection cover 8 for the brush cutter, a column is attached to the attachment frame 15 of the fixing member 10 The first clamping frame member 17 and the second clamping frame member 18 of the support pole clamping member 11 attached to the mounting frame body 15 can be easily attached. Since the support 2 can be easily held by the support holding member 11 by tightening the nut body 21 after the support 2 is installed between the support post 2 and the The attaching operation and the attaching operation of the brush cutter protective cover 8 to the support column 2 can be performed smoothly.

(3) The upper flat plate portion 8A, the upper upper side bent piece portion 8C, and the upper side bent portion 8D are moved from the cutter member 4 to the upper body side of the post 2 toward the upper body side of the brush cutter while using the brush cutter 1. Grass and stones scattered through the upper side are blocked, so wearings such as hats and outerwear that are worn on the upper body of the brush cutter during the brush cutting operation Grass and stones will not collide with wearing items such as gloves, and grass and grass juice will adhere to the wearer's wearing items to contaminate or damage the wearing items. In addition, scattered objects such as stones do not hit the body on the upper body side of the pruning operator, for example, the body such as the head, chest, and hand, and the body is not damaged.

(4) While using the brush cutter 1 by the lower flat plate portion 8B, the lower lower bent piece 8E, the lower side bent piece portions 8F and 8G, and the lower upper bent piece portion 8H, the brush cutter operator of the brush cutter 1 The grass, stones, etc. scattered from the cutter member through the lower side of the support column 2 are blocked from the scattered matter toward the lower body side of the cutter body. The attached items such as trousers and work shoes do not collide with scattered objects such as grass and stones, and grass and grass juice can be worn by the pruning worker. It does not adhere to contaminate or damage the wearing parts, and scattered objects such as stones do not hit the body of a brush cutter, for example, a body such as a foot, thereby damaging the body. In particular, when the brushing operation is performed in a state where the lowermost lower end bent portion 8E of the brush cutter scattering protection cover 8 is lightly pressed against the ground 26, the lower portion of the brush cutter scattering protection cover 8 is used. Since there is no gap between the lower side bent piece 8E and the ground 26, when the brush cutter 1 is in use, the stones, grasses and grasses facing the lower body side of the brush cutter operator of the brush cutter 1 It can reliably prevent splashes such as juice.

(5) The upper flat plate portion 8A and the lower portion are formed by the upper upper side bent piece 8C, the upper side bent piece 8D, the lower lower bent piece 8E, the lower side bent pieces 8F and 8G, and the lower upper bent piece 8H. Without increasing the size of the flat plate portion 8B, the scattering direction of the scattered matter scattered from the cutter member 4 can be changed to the tip side direction of the support column 2, and the upper flat plate portion 8A and the lower flat plate portion 8B can be changed. Since strength is achieved, a strong and miniaturized brush cutter protective cover 8 can be obtained.

(6) The upper flat plate portion 8A, the lower flat plate portion 8B, the upper upper side bent piece portion 8C, the upper side bent portion 8D, the lower lower bent piece 8E, and the lower side bent piece portions 8F, G are made of synthetic resin. As a result of integral molding, etc., it is possible to reduce the number of components and improve the manufacturability of the scattering protection cover 8 for a brush cutter.

(7) The first holding frame member 17 is arranged so that the fitting recess 17A of the first holding frame member 17 protrudes outward from the other side edge 8A-3 of the upper flat plate portion 8A. Even if a gap G is formed between the end surface of the other side edge 8A-3 of the upper flat plate portion 8A and the outer peripheral surface of the support column 2 by being attached to the mounting frame 15, the gap G is reduced. By setting the size so that the entire cylindrical transmission mechanism housing 3 provided at the tip of the column 2 can be seen, grass and stones scattered from the gap G toward the upper body side of the brush cutter It can almost prevent the scattered matter such as.

(8) When the pair of fitting recesses 17A and 18A of the column holding member 11 are fitted to the column 2, the upper plane plate portion 8A and the lower plane plate portion 8B are moved with respect to the longitudinal center line X3 of the column 2 Since it extends in a substantially right-angle direction, most of the grass that has been scattered from the cutter member 4 and collided with the upper flat plate portion 8A and the lower flat plate portion 8B falls, and the grass is the upper flat plate. Since there is no large amount of sticking to the portion 8A and the lower flat plate portion 8B, the scatter protection cover 8 for the brush cutter becomes heavy during the brush cutting operation, and the workability is not deteriorated.

(9) When the pair of fitting recesses 17A and 18A of the column holding member 11 are fitted to the column 2, the other side of the upper plane plate portion 8A among the side sides 8B-2 and 8B-3 of the lower plane plate portion 8B. Since the side 8B-3 closer to the side edge 8A-3 protrudes outward from the outer peripheral surface in the longitudinal direction of the support column 2, the brush cutting is performed from the cutter member 4 through the lower side of the support column 2. The scattered matter such as grasses and stones scattered toward the lower body of the worker can be reliably blocked.

(10) Even if the shape of the other side edge 8A-3 of the upper flat plate portion 8A is not protruded outward from the outer peripheral surface in the longitudinal direction of the column 2, the cutter member 4 is passed through the upper side of the column 2. It was confirmed by experiments that it was possible to block the scattered matter such as grass and stones scattered toward the upper body side of the brush cutter. Therefore, the size of the upper flat plate portion 8A can be reduced by making the other side edge 8A-3 of the upper flat plate portion 8A not to protrude outward from the outer circumferential surface of the support column 2 in the longitudinal direction. Can do.

(11) By rotating the support column 2 around the center line X3 in the longitudinal direction of the support column 2 by the grip handle 6, the rotation surface X2 of the cutter member 4 grows on the ground surface 26 while being inclined with respect to the ground surface 26. When cutting the grass, the rotation of the column 2 is performed by bending the corner outer peripheral wall 8K-1 between the lower lower side bent piece 8E and the lower side bent piece 8F and the lower lower side bent portion of the lower flat plate portion 8B. It can be smoothly performed by the rotatable shape portion formed by making the corner outer peripheral wall 8K-2 between the piece portion 8E and the lower side bent piece portion 8G into an inclined surface. In other words, the gripper handle 6 is formed on the corner outer peripheral wall 8K-1 and the corner outer peripheral wall 8K-2 even if the column 2 is rotated about the longitudinal center line X3 of the column 2 as the rotation axis. While the cutter member 4 is swung to the left and right without being caught by the convex portion 26A (including the stepped portion) 26A of the ground 26 or the inclined ground 26 by the second catching prevention means 25 provided in the rotatable shape portion, and The brush cutter 1 can be moved forward.

(12) When cutting grass near the curb or concrete wall, contact the curb or concrete wall with the upper side bent piece 8D or the lower side bent piece 8F of the brush protection cover 8 for the brush cutter. It is also possible to carry out mowing work while In this case, the cutter member 4 is prevented from coming into contact with the curb or the concrete wall by the upper side bent piece 8D or the lower side bent piece 8F of the brush cutter protective cover 8; Without damaging the cutter member 4, the grass near the curb or the concrete wall can be cut off.

(13) When cutting undergrowth near the standing tree, cut along the standing tree while bringing the upper side bent piece 8D or the lower side bent piece 8F of the brush protection cover 8 into contact with the standing tree. The mowing work can be performed while moving the dispenser 1. In this case, the cutter member 4 is prevented from coming into contact with the standing tree by the upper side bent piece 8D or the lower side bent piece 8F of the scattering protective cover 8 for the brush cutter. Undergrowth can be cut smoothly without damaging its standing trees.

(14) If the entire brush cutter 1 bounces upward when the brush cutter is lifted while lifting the brush cutter 1 on the bank slope, the lower part of the brush cutter protective cover 8 Since the lower bent piece 8E hits the foot of the brush cutter and prevents the cutter member 4 from coming into contact with the leg of the brush cutter, the leg or the like is not damaged by the cutter member 4.

(15) By tightening or loosening the nut body 21 with a finger of a brush cutter operator without using a tool, the brush cutter scattering protection cover 8 is attached to and detached from the column 2 and the brush cutter is protected against scattering. Adjustment of the attachment position to the support | pillar 2 of the cover 8 can be performed, and it is convenient.

(16) When the support column 2 is clamped between the first clamping frame member 17 and the second clamping frame member 18, the V-shaped fitting concave portion 17A and the V-shaped fitting concave portion 18A have four points. In addition to being supported, the distance between the first clamping frame member 17 and the second clamping frame member 18 can be adjusted according to the outer diameter of the column 2, so that the outer diameter of the column 2 of the brush cutter 1 is large and small. Even if they are different, the column 2 can be firmly clamped between the first clamping frame member 17 and the second clamping frame member 18. Therefore, it is convenient to use one brush cutter protective cover 8 for a plurality of brush cutters having different outer diameters of the support columns, in other words, to be used as an attachment. In addition, by providing an elastic material for preventing damage in one or both of the fitting recess 17A and the fitting recess 18A, the holding force of the support column 2 by the first holding frame member 17 and the second holding frame member 18 is increased. Since it increases, it is possible to securely fix the brush cutter scattering protection cover 8 at a predetermined position of the support column 2 without damaging the outer periphery of the support column 2.

(17) The attachment position of the brush cutter scattering protection cover 8 to the support 2, that is, the attachment position in the longitudinal direction of the support 2 and the attachment position of the attachment position substantially perpendicular to the longitudinal direction of the support 2 Since it can be adjusted to the optimal position according to the height of the brush cutter, even if the height of the brush cutter is different, such as grass, stones etc. scattered towards the brush cutter It is possible to reliably block the scattered objects and to contaminate and damage the fittings of the brush cutter or damage the body of the brush cutter.

(18) The other side edge 8A-3 of the upper flat plate portion 8A of the brush protection cover 8 is not protruded outward from the outer peripheral surface in the longitudinal direction of the support column 2, and the upper flat plate portion 8A Since the fitting recess 17A of the first clamping frame member 17 is positioned outward from the other side edge 8A-3, the V-shaped fitting recess 17A and the second fitting recess 17A of the first clamping frame member 17 are located. Between the V-shaped fitting recesses 18A of the holding frame member 18, the work of holding the support column 2 can be performed smoothly, and the attachment work of the brush cutter shatter protection cover 8 to the support column 2 can be performed without difficulty. At the same time, the nut body 21 is loosened and the second clamping frame member 18 is rotated about the one screw rod 20 as an axis, so that the column 2 is fitted into the V-shaped fitting recess of the first clamping frame member 17. 17A can be released from between the V-shaped fitting recess 18A of the second clamping frame member 18, Detaching from the strut 2 in the cutter for scattering protection cover 8 can also be performed without difficulty.

(19) Even if the brush cutter scattering protection cover 8 is removed from the support 2, the support holding member 11 constituting the holding means 9 is separated from the fixed member 10 fixed to the brush cutter scattering protection cover 8. Therefore, the clamping means 9 can be stored and managed together with the brush cutter scattering protection cover 8, which is convenient. Further, the parts of the first clamping frame member 17, the second clamping frame member 18 and the clamping fastener 19 that constitute the support pole clamping member 11 from the fixing member 10 can be integrated without separating the parts. In this state, the column holding member 11 can be removed from the fixing member 10 or the column holding member 11 can be attached (detachable) from the fixing member 10, so that the handleability is excellent.

(20) Since the scattering protection cover 8 for the brush cutter has a shape such that the other side edge 8A-3 of the upper flat plate portion 8A does not protrude outward from the outer circumferential surface of the column 2 in the longitudinal direction. During the paying operation, the cutter operator determines the positional relationship between the outer periphery of the tip of the cutter member 4 and the edge of the curb or concrete wall, the positional relationship with the root of grass, etc. Because it is easy to see, it can smoothly cut grass on the edge of curbstones and concrete walls, undergrowth around standing trees, or thick grass with trunks.

(21) At the time of attaching the supporter holding member 11 to the fixing member 10, the two screw rods 20 of the supporter holding member 11 are fitted into the sliding grooves 15 </ b> A provided in the attachment frame body 15 of the fixing member 10. After that, even if the slide groove 15A is moved, the second fastener 16 that also serves as a drop-off preventing member collides (locks) with the head portion 20A of the screw rod 20, whereby the screw of the column holding member 11 Since the rod 20 is prevented from coming out from the left and right ends of the sliding groove 15A of the attachment frame body 15, the work of attaching the column holding member 11 to the fixing member 10 can be performed smoothly.

  As described above, according to the above-described embodiment, even if there is the convex portion 26A on the ground 26, the first hook preventing unit 24 and the second hook preventing unit 25 can catch the convex portion 26A. Providing the brush cutter 1 that efficiently cuts grass growing on the ground 26 while holding the grip handle 6 and swinging the column 2 smoothly left and right and moving the column 2 forward smoothly. Made possible.

  Furthermore, according to the one embodiment, the brush cutter scattering protection cover 8 can be easily attached to the support column 2 so as to be in a state suitable for the height of the brush cutter operator of the brush cutter 1. This makes it possible to provide the brush cutter 1 with excellent usability and safety.

  Furthermore, according to the above-mentioned embodiment, the grass and the juice of the grass do not adhere to the wearer's wearer to contaminate or damage the wearer, and the scattered matter such as stones However, it is possible to provide the brush cutter 1 that is excellent in usability and safety because it does not hit the body of the brush cutter, for example, the body such as the head and limbs, and does not damage the body.

  Furthermore, according to the above-described embodiment, grass does not stick to the inner surface of the brush cutter dust protection cover 8 in a large amount, and the brush cutting operation is interrupted and removed from the inner surface of the brush cutter dust protection cover 8. This makes it possible to provide a brush cutter 1 that does not require such work.

  Furthermore, according to the above embodiment, the attachment position of the brush protection cover 8 for the brush cutter can be easily adjusted in both the longitudinal direction of the support column 2 and the direction substantially perpendicular to the longitudinal direction of the support column 2. The brush cutter 1 can be provided.

  As shown in FIG. 18, the first catching prevention means 51 of the brush cutter shatter protection cover 50 according to the first example of another embodiment shown in FIG. 18 is composed of only a guide member 51A having a mountain-shaped cross section. One end of the member 51A is brought into contact with the end edge 8E-1 of the lower lower bent piece 8E, and the other end of the guide member 51A is brought into contact with the lower lower bent piece 8E, and then the guide member 51A. The lower lower side bent piece 8E is made of resin or the like to be hardened when the brush cutter scattering protection cover 50 is molded, and the other structure is the same as that of the brush cutter scattering protection cover 8 of the above embodiment. Are the same. In FIG. 18 showing another embodiment example 1, the same reference numerals as those in FIGS. 3, 5 and 17 showing the above-described embodiment represent the same contents as those in FIGS. According to the first catching prevention means 51 of the brush protection apparatus 50 according to the first embodiment, the first catching prevention means 24 of the brush protection cover 8 according to this embodiment is configured. The mounting member 24D composed of the bolts, washers, and nuts is not necessary, and the assemblability and manufacturability are improved.

  In the scattering protection cover 60 for a brush cutter according to the second embodiment shown in FIG. 19, an L-shaped fixing having a L-shaped cross-section of a member that fixes the scattering protection cover 60 for a brush cutter to a support column. The member 61 is formed integrally with the upper flat plate portion 8A of the scattering protective cover 60 for a brush cutter, and is formed of a metal fitting having an L-shaped cross section in the L-shaped fixing member 61 at the time of forming. The reinforcing member 62 is embedded. According to the brush cutter scattering protective cover 60 according to the second embodiment, the plurality of first fasteners 14 including the fixing bolts and washers are provided as in the brush cutter scattering protective cover 8 of this embodiment. It becomes unnecessary to fix the L-shaped fixing tool 12 to the brush cutter scattering protection cover 8, and the assembling property and the manufacturability are improved. Moreover, in the brush cutter scattering protection cover 8 of this embodiment, when the L-shaped fixture 12 is fixed to the brush cutter scattering protection cover 8 using the first fastener 14, the first fastening is performed. Although there is a possibility that the tightening of the tool 14 is loosened and the L-shaped fixing tool 12 moves, the scattering protection cover 60 for the brush cutter in the second embodiment shown in FIG. 19 has the L-shaped fixing member 61 as the brush cutter. The L-shaped fixing member 61 does not move because it is integrally formed with the upper flat plate portion 8A of the scattering protection cover 60 for use.

  In the scattering protection cover 70 for a brush cutter according to the third embodiment shown in FIG. 20, an L-shaped fixing with an L-shaped cross-section constituting a member for fixing the scattering protection cover 70 for a brush cutter to a support column. The member 71 is formed integrally with the upper flat plate portion 8A of the brush cutter scattering protection cover 70. In this case, the reinforcing member is not embedded in the L-shaped fixing member 71. According to the brush protection cover 70 for the brush cutter according to the third embodiment, like the brush protection cover 8 for the brush cutter according to this embodiment, the plurality of first fasteners 14 including the fixing bolts and washers are provided. It becomes unnecessary to fix the L-shaped fixing tool 12 to the brush cutter scattering protection cover 8, and the assembling property and the manufacturability are improved. In the case of the brush protection cover 70 for the bush cutter according to the third embodiment example 3, the reinforcing member 62 is not used as in the case of the brush protection cover 60 for the brush cutter according to the second embodiment part 2, The number of points is reduced, and it is possible to improve manufacturability as compared with the brush protection cover 60 for the brush cutter according to the second embodiment. In FIG. 19 showing another embodiment example 2 and FIG. 20 showing another embodiment example part 3, the same reference numerals as those in FIGS. 5 to 9 showing the one embodiment are the same as those in FIGS. Represents.

  The brush cutter protective cover 8 of the above embodiment is made of synthetic resin (made of reinforced plastic) by molding, but is not limited thereto, and is made of stainless steel, aluminum or steel plate. Is also possible.

  The outer peripheral wall 8K-1 between the lower lower bent piece 8E and the lower side bent piece 8F and the lower lower bent piece 8E and the lower side bent of the splash protection cover 8 for the brush cutter according to the above embodiment. The corner outer peripheral wall 8K-2 between the one part 8G is formed as an inclined surface to form a rotatable shape part, but the present invention is not limited to this. The corner outer peripheral walls 8K-1 and 8K-2 may be arcuate surfaces to form a rotatable shape portion, or the lower lower side bent piece 8E and the corner outer peripheral wall 8K-1 may be formed. In addition, the overall shape of the corner outer peripheral wall 8K-2 may be a continuous gentle arc shape to form a rotatable shape portion.

  In the fitting recess 18A of the second clamping frame member 18 in the brushing cutter scattering protective cover 8 of the above-described embodiment, a bent piece is formed at the edge of the fitting recess 18A, but the invention is not limited to this. . When the second sandwiching frame member 18 is formed of a material having excellent strength, a bent piece is not formed on the edge of the fitting recess 18A, and the fitting recess is left as it is. The edge of 18A may be chamfered (chamfered).

  21 and 22 show the shape of the brush protection cover 80 for a brush cutter according to the fourth embodiment of the present invention. As shown in FIG. 21, a brush protection cover 80 for a brush cutter according to another embodiment 4 of the present invention has a vertical width dimension from the uppermost end of the upper upper bent portion 8C to the lower end of the lower lower bent portion 8E. L11 is about 410 mm, the vertical width dimension L12 from the upper side 8B-4 of the lower flat plate portion to the lowermost end of the lower lower bent piece 8E is about 125 mm, and the lower side from the outermost periphery of the lower side bent piece 8F The width L13 to the outermost periphery of the bent piece 8G is about 360 mm, the width L14 at the uppermost end of the upper upper side bent piece 8C is about 200 mm, and the width L15 of the upper side 8B-4 of the lower flat plate portion is about 200 mm. Each is set to 125 mm. In addition, the brush cutter shatter protection cover 50 inclines the inclined surfaces of the corner outer peripheral wall 8K1 and the corner outer peripheral wall 8K2 to about 60 degrees with respect to the lowermost end surface of the lower lower bent piece 8E, The upper side bent piece 8C, the upper side bent piece 8D, the lower lower bent piece 8E, and the lower side bent piece 8F, 8G are about 45 degrees with respect to the upper flat plate portion 8A and the lower flat plate portion 8B. It is formed so as to be bent at an angle.

  Furthermore, when the brush cutter 1 with the brush cutter scattering protection cover 80 according to the fourth embodiment shown in FIGS. 21 and 22 attached to the support column 2 is viewed from the front, the upper flat plate portion 8A The other side of the upper flat plate portion 8A so that the distance between the side side end 8A-3 and the outer peripheral surface of the support column 2 increases toward the upper side of the other side side end 8A-3 of the upper flat plate portion 8A. The side edge 8A-3 is inclined. Moreover, in the brush cutter shatter protection cover 80 according to the fourth embodiment, the rising piece 81 is provided across the other side edge 8A-3 of the upper flat plate 8A and the edge of the upper upper bent piece 8C. An operator who grips the outer surface of the rising piece 81 by gripping the grip handle and swinging the support column 2 to the left or right is outside the other side edge 8A-3 of the upper flat plate portion 8A during the brushing operation. In order to be able to directly see the entire cylindrical transmission mechanism housing 3 from the side, the inclined surface is inclined in a direction away from the outer peripheral surface of the column 2. In the brush cutter scattering protective cover 80 according to the fourth embodiment, the inclination angle R4 of the other side edge 8A-3 of the upper flat plate portion 8A is set to be about 7 to 9 degrees. ing. In FIG. 21 and FIG. 22 showing another embodiment example 4, the same reference numerals as those in FIG. 16 showing the above-described embodiment denote the same contents as FIG.

  In the scattering protection cover for a brush cutter according to the fourth embodiment shown in FIGS. 21 and 22, the other side edge 8A-3 of the upper flat plate 8A and the edge of the upper upper bent piece 8C are covered. Whereas the rising piece 81 is provided, and the lower upper side bent piece portion 8H provided at the upper side 8B-4 portion of the lower flat plate portion 8B and bent toward the tip end side of the support column 2 is not provided. In the scattering protection cover 8 for a brush cutter according to the above-described embodiment of the present invention (see FIG. 16), the rising piece 81 is not provided, and the column is provided at the upper side 8B-4 portion of the lower flat plate portion 8B. 2 is provided with a lower upper side bent piece 8H which is bent toward the front end side.

  According to the brush protection cover 80 for the brush cutter according to the fourth embodiment, the strength of the brush protection cover 80 for the brush cutter is maintained by the rising piece 81, and the brush protection cover 80 for the brush cutter is deformed. In addition, the tip end of the support column 2 does not have to be tilted by the grip handle 6 with the center line X3 in the longitudinal direction of the support column 2 as the rotation axis to tilt the brush cutter protective cover 80 toward the rotation direction of the cutter member 4. The entire cylindrical transmission mechanism housing 3 provided on the side can be seen during the brushing work, and the workability of the brushing can be improved.

  FIG. 23 relates to another embodiment 5 of the present invention, and the clamping means 90 for detachably attaching the brush cutter scattering protection cover 8 to the support 2 is a fixing member fixed to the brush cutter scattering protection cover 8. 10 and a column holding member 91 provided on the fixed member 10 and holding the column 2. As shown in FIG. 23, the column holding member 91 of the holding means 90 includes a first holding frame member 92 having a V-shaped fitting recess 92A and a second holding member having a V-shaped fitting recess 93A. With the frame member 93, the fitting recess 92A of the first clamping frame member 92 and the fitting recess 93A of the second clamping frame member 93 facing each other, the clamping frame member 92 and the clamping frame member 93 are trimmed. It comprises at least two clamping fasteners 19 that are slidably attached to the attachment frame 15 fixed to the scattering protection cover 8 for the blower. In FIG. 23 showing another embodiment example 5, the same reference numerals as those in FIG. 10 showing the one embodiment represent the same contents as in FIG.

  The first clamping frame member 92 and the second clamping frame member 93 of the clamping means 90 according to the fifth embodiment of the present invention are composed of prismatic block bodies having the same shape and the same dimensions, such as oak trees. Made from hard wooden squarewood. The first clamping frame member 92 of the clamping means 90 is provided with one V-shaped fitting recess 92A and two through holes 92B through which the screw rod 20 of the clamping fastener 19 passes. The second clamping frame member 93 of the clamping means 90 is provided with a single V-shaped fitting recess 93A and two through holes 93B through which the screw rod 20 of the clamping fastener 19 passes. In a state where the fitting recess 92A of the first clamping frame member 92 and the fitting recess 93A of the second clamping frame member 93 are opposed to each other, the through-hole 92B of the first clamping frame member 92 and the second clamping frame member 93 through-holes 93B are opposed to each other.

  The clamping device 19 constituting the clamping means 90 of the fifth embodiment of the present invention is similar to the above-described embodiment in that the metal screw rod 20 is provided with a retaining head 20A at the rear end. And a metal wing nut-like nut body 21 that is screwed to the front end side of the screw rod 20 and a metal detent member 22 that is fitted to the rear end side of the screw rod 20. The second holding frame member 93 is moved toward the first holding frame member 92 by screwing it with a human finger or a tool, whereby the fitting recess 92A of the first holding frame member 92 and the second holding frame member 92 are moved. The support column 2 can be held between the fitting recess 93A of the holding frame member 93.

  According to the clamping means 90 according to the fifth embodiment, the second clamping frame member 93 is clamped by the operator's finger to clamp the second clamping frame member 93 by the first clamping frame member 92. By moving toward the side, the column 2 can be smoothly held between the fitting recess 92A of the first holding frame member 92 and the fitting recess 93A of the second holding frame member 93. In addition, although the 1st clamping frame member 92 and the 2nd clamping frame member 93 of the clamping means 90 concerning other embodiment No. 5 are made of wooden squares, they may be made of a light metal such as synthetic resin or aluminum. Is possible.

  Furthermore, according to the clamping means 90 according to the fifth embodiment shown in FIG. 23, the first clamping frame member 92 and the second clamping frame member 93 are formed as prismatic block bodies having the same shape. The sandwiching frame member 93 can be used for the first sandwiching frame member 92, and conversely, the first sandwiching frame member 92 can be used for the second sandwiching frame member 93, so that handling and productivity are possible. Can be improved. Moreover, in the clamping means 9 of the above-described embodiment, the second clamping frame member 18 may be deformed because the second clamping frame member 18 has a metal plate shape. In some cases, it is necessary to tighten the nut body 21. However, in the clamping means 90 according to the second embodiment, the nut 21 can be securely tightened without using a tool. Can be improved. The nut body 21 is not limited to the wing nut shape, but may be a knob nut shape.

DESCRIPTION OF SYMBOLS 1 Brush cutter 2 Support | pillar 3 Tubular transmission mechanism storage body 4 Cutter member 5 Drive device 6 Grasp handle 8 Scatter protection cover 8A for upper part of the brush cutter according to the embodiment Upper flat plate portion 8A-3 Other side edge 8B Lower flat plate portion 8C Upper side bent piece 8D Upper side bent piece 8E Lower lower bent piece 8F, 8G Lower side bent piece 8H Lower upper bent piece 8K-1 Corner outer peripheral wall 8K-2 Corner outer peripheral wall 9 The clamping means 10 of the embodiment The fixing member 11 The column holding member 12 The L-shaped fixture 13 The reinforcing plate 14 The first fastener 15 The mounting frame body 16 The second fastener 17 The first clamping frame member 17A The V-shaped fitting recess 18 The first 2 clamping frame member 18A V-shaped fitting recess 19 clamping fastener 24 first catching blocking means 24A guide member portion 24A-1 projecting part climbing slope 25 second catching blocking means 26 ground 26A convex 50 Scatter protection cover for brush cutter 51 of other embodiment 1 First catch prevention means 60 of first embodiment of other embodiment Scatter protection cover 61 for brush cutter of other embodiment 2 L-shaped fixing related to second embodiment Scatter protection cover 71 for brush cutter according to other embodiment 3 L-shaped fixing member 80 according to embodiment 3 of third embodiment Scatter protection cover 81 for brush cutter according to other embodiment 4 Standing piece 90 According to other embodiment 5 Clamping means

Claims (5)

A long column, a cylindrical transmission mechanism housing provided at the tip of the column, a cutter member rotatably provided on the cylindrical transmission mechanism housing, and a drive for rotating the cutter member A brush cutter comprising at least a driving device provided on the rear end side of the support column and a grip handle provided on the support column to swing the support column to the left and right, the cutter member of the brush cutter; A fixing member that is detachably attached to the column by a clamping means so as to be positioned between the driving device and the clamping means is fixed to the scattering protection cover for the brush cutter, and the fixing member is provided A brush protection device for a brush cutter having a structure in which the column is clamped and fixed between the pair of fitting recesses by a column holding member provided with a pair of fitting recesses for holding the column. In over,
The scattering protection cover for the brush cutter is connected to the upper flat plate portion that extends upward and one side from the support column with the support member held by the holding device, and is connected to the upper flat plate portion by the holding device. A lower flat plate portion extending downward and on both sides of the support column in a state of sandwiching the support column; and an upper upper side bent piece portion which is provided on the upper side of the upper flat plate portion and is bent toward the tip end side of the support column. An upper side bent piece provided on one side of the upper flat plate portion and bent toward the front end side of the support column; and a lower end side of the lower flat plate portion provided on the lower end side of the support plate. A lower lower side bent piece portion that is bent toward the lower side plate, and a lower side bent piece portion that is provided on both sides of the lower flat plate portion and bent toward the distal end side of the support column. In addition, when the support handle is moved to the front by grasping the grip handle and moving the support column to the left or right, the first lower end of the lower lower side bent piece is prevented from being caught by the convex portion of the ground. A scattering protection cover for a brush cutter, characterized in that a catch prevention means is provided.   A pivotable shape for allowing the column to pivot about a center line in the longitudinal direction of the column on the outer peripheral wall of the corner between the lower lower side bent piece and the lower side bent piece. And a second catching blocking means for preventing the edge of the rotatable shape portion from being caught by a convex portion of the ground when the grip handle is gripped and the support column is swung left and right. The scattering protection cover for a brush cutter according to claim 1, which is provided.   The first catching prevention means moves over the edge of the lower lower bent piece over the convex part of the ground when the support handle is moved forward by squeezing the support handle and holding the grip handle. At least a slope part for getting over the convex part, and the second catching preventing means grips the grip handle and swings the support column to the left and right. The scattering protection cover for a brush cutter according to claim 2, further comprising at least a slope part for overcoming the convex part for overcoming the convex part of the ground.   The fixing member of the clamping means includes an L-shaped fixture having an L-shaped cross-section, a reinforcing plate that serves as a reinforcement when the L-shaped fixing device is fixed to a scattering protection cover for a brush cutter, and the reinforcing plate And a first fastener for fixing the L-shaped fixing tool to the splash protection cover for a brush cutter, a mounting frame body for slidably mounting the column holding member to the L-shaped fixing tool, and the mounting frame 4. The structure according to claim 1, further comprising: a second fastener for fixing a body to the L-shaped fixture, wherein the L-shaped fixture is formed integrally with the upper flat plate portion. A scattering protection cover for a brush cutter according to any one of the preceding claims.   The strut clamping member of the clamping means includes a first clamping frame member having a fitting recess, a second clamping plate member having a fitting recess, the fitting recess of the first clamping frame member, and the The first clamping frame member and the second clamping plate member can be slid with respect to the attachment frame body fixed to the scattering protection cover for the brush cutter in a state where the fitting recesses of the second clamping plate member face each other. 5. The structure according to claim 1, wherein the first clamping frame member and the second clamping plate member are formed into a prismatic block body having the same shape. A splash protection cover for a brush cutter according to claim 1.

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