JP2009022215A - Device for preventing winding of brush cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the inconvenience, wherein even though there are conventional brush cutters installed with an auxiliary blade for cutting off winding materials at the outer circumference of axial center of a rotary cutting blade, which are aimed toward prevention of winding of cut weeds or vines, the auxiliary blade does not cut off winding weeds or vines, but instead, encourages their winding. <P>SOLUTION: This winding prevention device of a brush cutter is provided, by enclosing the outer circumference of a gear case 5 with a standing circumferential wall of a planar side surface, having a closest height directly from the lower surface of a cutting rod 6 in the vicinity of the gear case 5 of the brush cutter, forming a cup-formed winding preventing tool 1, rotating by closely adhering to the center of the upper surface of the rotary cutting blade 4 and installing the above at the upper surface of the rotary cutting blade 4 as facing upward. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a brush cutter for preventing grass vines from being mowed.

  A conventional wrapping prevention tool includes a rotation auxiliary blade that is used in close contact with the upper surface of a rotary cutting blade intended to recut and remove the vines to be wound.

JP 2005-118003 A

  However, the mowing grass and the vines around which the rotation assisting blade is wound are not separated and removed, and the winding is promoted on the contrary.

  A cup-shaped anti-wrapping tool that rotates around the gear case outer periphery with a planar side wall having a height close to the lower surface of the bush near the brush cutter gear case and rotates in close contact with the upper surface of the rotary blade. Provide the upper surface of the rotary blade.

  The cup-shaped anti-winding device provided in close contact with the upper surface of the rotary cutting blade according to the present invention has a planar side surface that surrounds the outer periphery of the gear case at a height that is close to the lower surface of the scraper located in the vicinity of the gear case. The surrounding wall slides all of the cut grass, and the rotary cutting blade completely removes the cut grass and prevents winding completely, and it is necessary to pre-cut any vine that is overgrown as before. In addition, with the anti-winding device of the present invention, the vines in any situation can be mowed with the brush cutter itself, and even if a piece of nylon string of about 30 cm is in the grass plexus, it will not be tightly wound, Even if the experiment is carried out by inserting a rotating cutting blade into the cut grass, the winding does not cause a decrease in rotation or a rotation stop.

  Therefore, since no tight winding occurs, there is no need for a wound removal tool such as a cutter, pliers or pliers at the time of mowing work, the working efficiency and safety are remarkably improved, and the economic effect is greatly improved, which is extremely advantageous.

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

1 and 2 are views showing an embodiment of the present invention, and FIG. 1 is a perspective view showing a cup-shaped anti-winding device and is a partially transparent view.
FIG. 2 is a side view showing a portion around a gear case of a brush cutter with a cup-shaped wrapping prevention tool, and is a partially transparent view.

1 and 2, reference numeral 1 denotes a cup-shaped winding preventing tool.
The anti-winding tool 1 is provided with a shaft hole 3 having the same diameter as the shaft hole of the rotary cutting blade 4 at the center to form a vertical peripheral wall 2 having a planar side surface.
The material and thickness used for the anti-winding tool are not particularly specified, but are most preferably formed of stainless steel having a thickness of about 0.3 mm.

In FIG. 1 and FIG. 2, 2 is a vertical wall.
The vertical wall 2 surrounds the outer periphery of the gear case, and is formed on the vertical wall 2 on a planar side surface with a height immediately adjacent to the lower surface of the bushing located in the vicinity of the gear case.
The planar side surface of the vertical wall 2 prevents all the grass vines from sliding and wrapping, so that the rotation does not decrease. Therefore, the rotary blade cuts the vines and grass sequentially while removing the grass. become.

In FIG. 1, 3 is a shaft hole.
The shaft hole 3 is provided with a hole having the same diameter as the shaft hole of the rotary cutting blade 4 at the center of the cup-shaped anti-winding device 1, and is fixed to the rotary cutting blade 4 and the upper surface thereof in the same upward direction.

In FIG. 2, 4 is a rotary cutting blade.
The rotary cutting blade 4 is a disc cutting blade for cutting vines and grasses, and has a blade formed on the outer periphery.

In FIG. 2, 5 is a gear case.
The gear case 5 is a case that houses a gear that transmits the rotation of the engine to the rotary cutting blade 4 by changing the angle. Until now, the cutting of the grass case and the vine by the rotation of the rotary cutting blade always causes the gear case root to be tightly wound. However, the anti-winding device 1 of the present invention surrounds the gear case 5 with the flat wall 2 on the flat side surface and completely removes the cut grass vines, etc. There is no hard wrapping.

In FIG. 2, 6 is a payout.
The scissor 6 serves as an outer cylinder that transmits the rotational force to the rotary cutting blade 4 and is used to perform grass cutting work by swinging the rotary cutting blade 4 to the left and right. A rotary cutting blade 4 is provided.

  The anti-winding device of the present invention can be used for most brush cutters, and since there is no hard winding at all, it is excellent in work efficiency and safety and is economically advantageous.

The perspective view (partial perspective view) which shows embodiment of this invention Side view (partially perspective view) showing an embodiment of the present invention

Explanation of symbols

1 Winding prevention tool 2 Vertical wall 3 Shaft hole 4 Rotary cutting blade 5 Gear case 6

Claims (1)

  Surrounding the outer periphery of the gear case with a planar side wall with a height close to the lower surface of the bush near the brush cutter gear case, and making the same rotation in close contact with the upper surface of the rotary cutting blade. And a cup-shaped wrapping prevention tool that inevitably eliminates wrapping by sliding with a brush, and a brush cutter equipped with the wrapping prevention tool.

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