JP2008173056A - Member for adding function divided by weeding grass, and weeding blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member for adding functions divided by weeding grass, enabling a conventional rotary disk having a metallic plate-shaped weeding blade and a plastic wire to be used properly by easily exchanging them without requiring exchanging operation according to the condition of a weeding site and the purpose, and not requiring many through holes in the plate-shaped weeding blade being a base, and to provide the weeding blade. <P>SOLUTION: The member for adding the functions divided by the weeding grass is equipped with a metallic attaching member 3 to be detachably attached to a plate-shaped base blade 1 so as to contact with the upper surface 1a or the lower surface 1b thereof, a holder 4 to be fixed to both terminal parts 3c and 3d of the attaching member 3 and having a hole 7 directed to the outer diameter direction R, and a plastic bush-cutting wire 5 to be inserted to the hole 7 of the holder 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a grass cutting function adding member and a grass cutting blade.

As conventional grass cutting blades, there are known metal disc-shaped ones having a large number of teeth on the outer periphery, or ones in which a plastic wire extends from the rotating disk in the outer diameter direction to form a cutting blade.
Moreover, there exists what attaches a plastic wire material to a plate-shaped grass cutting blade like patent document 1 with an attachment tool.

However, it takes time and effort to replace the mowing blade and the brush cutting blade. Moreover, in order to attach a mounting tool to a plate-shaped mowing blade as in Patent Document 1, a large number of through-holes are required in the plate-shaped mowing blade body, and attachment is not possible depending on the size and pitch of the through-holes. There was a drawback.
In addition, the conventional grass cutting blade and brush cutting blade hold the grass cutting blade and the brush cutting blade during the work and grass or the like wraps around the rotating boss part that transmits the rotation drive, and the work efficiency is reduced and the work rotates after the work is finished. There was also a problem that the work of cleaning the boss was necessary and time consuming.
Japanese Patent Application No. 2006-005916

The above-described conventional metal plate-like grass cutting blade and rotating board having plastic wire rods can be easily switched and used properly without the need for replacement work according to the situation and purpose of the grass cutting place, and the base plate An object of the present invention is to provide a grass cutting blade function adding member and a grass cutting blade that do not require a large number of through-holes.
It is another object of the present invention to provide a grass cutting blade function addition member and a grass cutting blade for holding a grass cutting blade as a base and preventing the winding of grass or the like on a rotating boss portion that transmits rotational driving.

  Therefore, the grass cutting function adding member according to the present invention includes a metal plate mounting member attached to the upper surface or the lower surface of the plate base blade in a detachable manner, and both ends of the mounting member. A holder having a hole fixed to the portion and facing in the outer diameter direction, and a plastic brush cutting wire inserted into the hole of the holder.

  Further, the grass cutting function adding member according to the present invention has an anti-winding upright piece for preventing the grass or the like from being wound around the rotating boss portion that holds the base blade and transmits the rotational driving force. It is.

  Further, the grass cutting blade according to the present invention is composed of a plate-shaped base blade for mowing that has a fixed blade around it, and a grass cutting function additional member that is detachably attached to the base blade. The additional member is attached to the base blade in contact with the upper surface or the lower surface of the base blade in a detachable manner, and is attached to both ends of the mounting member so as to face the outer diameter direction. A holder having a hole, and a plastic brush wire inserted into the hole of the holder are provided.

  In addition, the grass cutting blade additional function adding member of the grass cutting blade according to the present invention is an anti-winding stand for preventing winding of grass or the like around the rotating boss portion that holds the base blade and transmits the rotational driving force. It has a piece.

The present invention has the following remarkable effects.
According to the grass cutting function additional member and the grass cutting blade of the present invention, switching between the grass cutting operation using the base blade and the grass cutting operation using the plastic cutting wire can be performed safely, quickly and easily. Moreover, since it is not necessary to have the hole and unevenness | corrugation for attaching the attachment member attached to a plate-shaped base blade, it can manufacture at low cost. Further, since there is only a tool for attaching and detaching the conventional mowing blade to the boss portion that holds the base blade and transmits the rotational drive, it can be easily attached and detached, so that a new tool is not required and it is convenient and economical.
Furthermore, it is possible to prevent the work from being hindered by the grass or the like being wrapped around the rotating boss portion during the mowing operation (or the weeding operation) (the entanglement is increased by the snowman type), so that the operation efficiency is improved. Moreover, since the cleaning operation | work which removes the grass etc. which encroached on the rotation boss | hub part after the completion | finish of work is not required, the efficiency of the whole operation | work improves.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIG. 1 shows a plate-like base blade 1, which has a large number of teeth 14 integrally formed by brazing a cemented carbide tip 14 a on the outer periphery of a disk-like base 13. Alternatively, the tooth portion may be formed directly on the outer periphery of the base portion 13. A boss hole 11 is formed at the center for attaching to a rotating boss portion 12 that holds the base blade 1 and transmits rotational driving.

  FIG. 2 shows an attachment member 3 having a substantially rhombus shape formed by chamfering a steel plate material into a rhombus shape, and having an attachment hole 8 for attachment to the rotating boss portion 12 formed in the center. Yes. The mounting hole 8 is set slightly larger than or equal to the boss hole 11 of the base blade 1. Further, as shown in FIG. 2B (when protecting the rotating boss portion 12), the upright pieces 6 whose cross-section is erected on the surface 3 a side when the rotating boss portion 12 is attached to the attaching hole 8 are symmetrically 2 There are places. The upright piece 6 is formed integrally with the mounting member 3. Further, the standing angle from the surface 3a is defined as the standing angle α, and the standing angle α is set to 30 ° to 60 °, and preferably about 45 °. Resin holders 4 are fixed to both ends 3c and 3d of the attachment member 3, respectively. As shown in FIG. 2C, the holder 4 is formed in a block shape having a substantially elliptical shape when viewed from the front, and forms side surfaces 4a and 4b in the longitudinal direction of the ellipse. Further, each holder 4 is fixed to the surface 3a at two positions with a countersunk head screw 9 and a cap nut 10 with the side surface 4b facing the outer diameter direction R. The countersunk screw 9 is inserted from the back surface 3 b of the mounting member 3. Further, the holder 4 has a hole 7 through which the brush wire 5 is inserted and removed in the outer radial direction R. Further, the mouth portion of the hole 7 on the side surface 4b side in the outer diameter direction R of the holder 4 is formed in a trumpet shape that expands on both sides as shown in FIG.

  FIG. 3 shows a wire 5 in which a quadrangular columnar column 16 and a columnar bulging head 15 are formed. The bulging head 15 is set larger than the hole 7 of the holder 4, and the column part 16 is set smaller than the hole 7. The column part 16 has a concavo-convex part 18 in which a plurality of irregularities are formed at a predetermined pitch from the tip 20 of the column part 16 to the ridge line part 18a at the symmetrical position of the two sides at a predetermined pitch of 55% to 75%, and the remaining part 17, Have

  Further, the cutting member 20 is provided with the cutting-function-specific function adding member 2 by inserting the tip 20 of the wire 5 in the outer radial direction R into the hole 7 of the holder 4 of the mounting member 3.

  The mowing cutting function adding member 2 is detachably attached to the plate-shaped base blade 1 for mowing. That is, the upper surface 1a of the base blade 1 and the back surface 3b of the attachment member 3 of the grass cutting function adding member 2 are brought into contact with each other so that the boss hole 11 of the base blade 1 and the attachment hole 8 of the attachment member 3 are concentric. Arrange so that Then, the conventional mowing blade (or brush cutter) can be attached to and detached from the rotating boss portion 12 that holds the base blade 1 of the mower (or brush cutter) and transmits the rotational driving force. A base blade 1 and a mowing cutting function adding member 2 are attached to form a mowing blade.

  The design of the present invention can be changed. For example, the base blade 1 is not limited to a disk shape but may be a cross shape or a star shape. Further, the grass cutting function adding member 2 may be attached to the rotating boss portion 12 with the back surface 3b of the mounting member 3 in contact with the lower surface 1b of the base blade 1. The holder 4 is not limited to resin, but may be metal (aluminum or the like). The attachment member 3 has the holder 4 fixed by the flat head screw 9 and the cap nut 10, but may be a metal product or a resin product in which the holder 4 is integrally formed.

The operation (usage method) of the grass cutting function adding member 2 according to the present invention described above will be described with reference to FIGS. First, a method of using the mowing different function adding member 2 in which the wire 5 is inserted through the hole 7 of the holder 4 of the mounting member 3 (the tip 20 is directed in the outer diameter direction R) is provided on the upper surface of the base blade 1. 1a and the back surface 3b of the mounting member 3 are brought into contact with each other, and the mounting holes 8 of the mounting member 3 are arranged concentrically in the boss holes 11 of the base blade 1 so that a mower (or a brush cutter) is provided. The base blade 1 is held and attached to a rotating boss portion 12 that transmits a rotational driving force. Next, the mower (or brush cutter) is turned on, and the base blade 1 and the grass cutting function adding member 2 are rotated to perform the grass cutting operation or the brush cutting operation. Work along the walls and around solid objects such as large stones with wire 5. For the twigs and tall grass, remove the wire 5 and work with the base blade 1.
At the time of work, the grass cutting function adding member 2 rotates together with the base blade 1, and the upright piece 6 rotates so as to protect and surround the rotating boss portion 12. In other words, the rotation trajectory of the upright piece 6 due to rotation forms a mountain-shaped wall with the rotation center as a crater. That is, grass, grass stems, roots, strings, belts, wires, etc. (referred to as grass in the present invention) from the outer diameter direction R do not come into contact with the rotating boss portion 12 and are entangled with the rotating boss portion 12. There is no. Further, as shown in FIG. 2 (b), the upright piece 6 stands upright on the surface 3a of the mounting member 3 like a mountain skirt, so that grass or the like is also entangled with the upright piece 6 itself. There is no.
Further, since the holder 4 is arranged symmetrically at the center of rotation, the resistance of weeding applied to the wire 5 can be made uniform. Further, by fixing the holder 4 from the back surface 3 b of the mounting member 3 with the countersunk head screw 9, the flat head screw 9 is sandwiched between the upper surface 1 a of the base blade 1 and the back surface 3 b of the mounting member 3 even if it is loosened. Therefore, the flat head screw does not come off.
Further, the wire 5 receives a pulling force in the outer diameter direction R due to centrifugal force, but the end surface 15a of the bulging head 15 abuts against the side surface 4a of the holder 4 to serve as a retaining member, and the wire 5 does not come off. Moreover, although the wire 5 receives force by hitting the rotational force or grass in the circumferential direction, the mouth portion of the side surface 4b of the hole 7 of the holder 4 is formed in a trumpet shape as described above. 5 prevents breakage due to stress concentration. Further, since the remaining portion 17 in which the concavo-convex portion 18 is omitted is formed as described above, the remaining portion 17 inserted through the holder 4 has no decrease in strength and has a large durability and is not easily damaged. In addition, when working around a fixed object such as along a wall or a large stone, even if the wire 5 comes into contact with the wall or the fixed object, the wire 5 can freely reciprocate in the outer diameter direction R. The contact body and the wire 5 are retracted so as not to cause an excessive load or damage.

  As described above, the present invention includes a metal plate mounting member 3 that is attached to the upper surface 1a or the lower surface 1b of the plate-like base blade 1 in a detachable manner, and both end portions of the mounting member 3. The base blade 1 is provided with the holder 4 having the hole 7 fixed to 3c, 3d and facing the outer diameter direction R, and the plastic cutting wire 5 inserted into the hole 7 of the holder 4. It is possible to switch between the mowing operation using the wiping operation and the weeding operation using the plastic mowing wire 5 in a safe, quick and easy manner. That is, the work according to the work place and the object (grass or twig) can be easily performed. That is, not only the safety to the worker is improved, but also the life of the machine itself, the base blade 1 and the wire 5 is extended by reducing the load on the mower (or brush cutter). Further, if there is a tool for attaching a conventional mowing blade (or brush cutting blade) to a conventional mower (or brush cutter), it is economical and convenient without requiring a new tool.

  In addition, since it has the erection piece 6 for preventing winding around the rotating boss portion 12 that holds the base blade 1 and transmits the rotational driving force to the rotating boss portion 12, It prevents grass from getting in the way (bulging up in a snowman style) and obstructing the work, thus eliminating the labor (removal of tangled grass, etc.) and greatly improving work efficiency. In addition, the trouble of cleaning the rotating boss portion 12 after the work is completed can be saved, and the maintenance time can be shortened. Further, since wet grass or the like does not remain wrapped around, the rust and dirt around the rotating boss portion 12 can be reduced. Further, since the standing piece 6 is protected so as to surround the boss portion 12 by rotating, it is not enclosed in the stopped state, and the locking of the tool to the boss portion 12 can be facilitated and the mounting work can be facilitated.

  Moreover, it is comprised from the plate-shaped base blade 1 for mowing which has a fixed blade in the periphery, and the grass cutting function addition member 2 detachably attached to the base blade 1, and the grass cutting function addition member 2 is a base blade. 1 is attached to the upper surface 1a or the lower surface 1b of the mounting member 3 so as to be detachably attached to the upper surface 1a or the lower surface 1b. Since the holding tool 4 having the hole 7 and the plastic cutting wire 5 inserted into the hole 7 of the holding tool 4 are provided, the mowing work using the base blade 1 and the plastic cutting wire 5 are provided. It is possible to switch the weeding work to be used safely, quickly and easily. That is, the work according to the work place and the object (grass or twig) can be easily performed. That is, not only the safety to the worker is improved, but also the life of the machine itself, the base blade 1 and the wire 5 is extended by reducing the load on the mower (or brush cutter). Further, if there is a tool for attaching a conventional mowing blade (or brush cutting blade) to a conventional mower (or brush cutter), it is economical and convenient without requiring a new tool.

  The grass cutting function adding member 2 has an anti-winding standing piece 6 for preventing the winding of the grass and the like around the rotating boss portion 12 that holds the base blade 1 and transmits the rotational driving force. Therefore, since grass or the like wraps around the rotating boss portion 12 (swells like a snowman) and prevents the work from being obstructed, the labor of the work (removal of tangled grass, etc.) is saved, and the work efficiency is greatly improved. In addition, the trouble of cleaning the rotating boss portion 12 after the work is completed can be saved, and the maintenance time can be shortened. Further, since wet grass or the like does not remain wrapped around, the rust and dirt around the rotating boss portion 12 can be reduced. Further, since the standing piece 6 is protected so as to surround the boss portion 12 by rotating, it is not surrounded in the stopped state, and the locking of the tool to the boss portion 12 can be facilitated and the mounting work can be facilitated.

It is a figure which shows an example of a base blade, (a) is a top view, (b) is a cross-sectional front view. It is a figure which shows an example of an attachment member, (a) is a top view, (b) is a cross-sectional front view, (c) is a perspective view. It is a figure which shows an example of a wire, (a) A partial cross section top view, (b) is principal part sectional drawing. It is a top view which shows an assembly form. It is sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base blade 1a Upper surface 1b Lower surface 2 Mowing another function addition member
3 Mounting member 3c End 3d End 4 Holding tool 5 Wire 6 Standing piece 7 Hole
12 Rotating boss part R Outer diameter direction

Claims (4)

  An attachment member (3) made of a metal plate that is attached to the upper surface (1a) or the lower surface (1b) of the plate-like base blade (1) in a contact and detachable manner, and the attachment member (3) A holder (4) having a hole (7) that is fixed to both ends (3c) and (3d) and facing the outer diameter direction (R), and is inserted into the hole (7) of the holder (4). A grass cutting function additional member, comprising: a plastic mowing wire (5).   The winding prevention standing piece (6) for preventing the winding of the grass etc. to the rotation boss | hub part (12) which hold | maintains the said base blade (1), and transmits rotational driving force. Additional function for mowing.   A plate-shaped base blade (1) for mowing that has a fixed blade around it, and a mowing function addition member (2) that is detachably attached to the base blade (1). The member (2) includes a mounting member (3) made of a metal plate that is attached to the upper surface (1a) or the lower surface (1b) of the base blade (1) so as to be detachable and attached thereto. A holder (4) having a hole (7) fixed to both ends (3c) and (3d) of the member (3) and facing the outer diameter direction (R), and the hole (7) of the holder (4) A mowing blade characterized by comprising a plastic mowing wire (5) to be inserted into ().   The grass cutting function adding member (2) is an anti-winding stand for holding the base blade (1) and preventing the winding of grass or the like around the rotating boss portion (12) that transmits the rotational driving force. The mowing blade according to claim 3, comprising a piece (6).

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